* [PATCH v2] gpio: mpc8xxx: Add new platforms GPIO DT node description
From: Hui Song @ 2019-08-06 2:49 UTC (permalink / raw)
To: Shawn Guo, Li Yang, Rob Herring, Mark Rutland, Linus Walleij,
Bartosz Golaszewski
Cc: linux-arm-kernel, devicetree, linux-kernel, linux-gpio, Song Hui
From: Song Hui <hui.song_1@nxp.com>
Update the NXP GPIO node dt-binding file for QorIQ and
Layerscape platforms, and add one more example with
ls1028a GPIO node.
Signed-off-by: Song Hui <hui.song_1@nxp.com>
---
Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt b/Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt
index 69d4616..2df5fc0 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-mpc8xxx.txt
@@ -37,3 +37,17 @@ gpio0: gpio@2300000 {
interrupt-controller;
#interrupt-cells = <2>;
};
+
+
+Example of gpio-controller node for a ls1028a SoC:
+
+gpio1: gpio@2300000 {
+ compatible = "fsl,ls1028a-gpio","fsl,qoriq-gpio";
+ reg = <0x0 0x2300000 0x0 0x10000>;
+ interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ little-endian;
+};
--
2.9.5
^ permalink raw reply related
* Re: [PATCH] pinctrl: spear: spear: Add of_node_put() before return
From: Viresh Kumar @ 2019-08-06 3:42 UTC (permalink / raw)
To: Nishka Dasgupta; +Cc: vireshk, linus.walleij, linux-arm-kernel, linux-gpio
In-Reply-To: <20190804154948.4584-1-nishkadg.linux@gmail.com>
On 04-08-19, 21:19, Nishka Dasgupta wrote:
> Each iteration of for_each_child_of_node puts the previous node, but in
> the case of a return from the middle of the loop, there is no put, thus
> causing a memory leak. Hence add an of_node_put before the return in
> two places.
> Issue found with Coccinelle.
>
> Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
> ---
> drivers/pinctrl/spear/pinctrl-spear.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pinctrl/spear/pinctrl-spear.c b/drivers/pinctrl/spear/pinctrl-spear.c
> index c4f850345dc4..7ec19c73f870 100644
> --- a/drivers/pinctrl/spear/pinctrl-spear.c
> +++ b/drivers/pinctrl/spear/pinctrl-spear.c
> @@ -157,12 +157,16 @@ static int spear_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
> /* calculate number of maps required */
> for_each_child_of_node(np_config, np) {
> ret = of_property_read_string(np, "st,function", &function);
> - if (ret < 0)
> + if (ret < 0) {
> + of_node_put(np);
> return ret;
> + }
>
> ret = of_property_count_strings(np, "st,pins");
> - if (ret < 0)
> + if (ret < 0) {
> + of_node_put(np);
> return ret;
> + }
>
> count += ret;
> }
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
--
viresh
^ permalink raw reply
* linusw/for-next build: 6 builds: 0 failed, 6 passed, 13 warnings (gpio-v5.3-3-18-g52d4cb72f265)
From: kernelci.org bot @ 2019-08-06 4:26 UTC (permalink / raw)
To: linux-gpio, fellows
linusw/for-next build: 6 builds: 0 failed, 6 passed, 13 warnings (gpio-v5.3-3-18-g52d4cb72f265)
Full Build Summary: https://kernelci.org/build/linusw/branch/for-next/kernel/gpio-v5.3-3-18-g52d4cb72f265/
Tree: linusw
Branch: for-next
Git Describe: gpio-v5.3-3-18-g52d4cb72f265
Git Commit: 52d4cb72f26530572a9a1377ba8427d0203b76e6
Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git/
Built: 6 unique architectures
Warnings Detected:
arc:
nsim_hs_defconfig (gcc-8): 2 warnings
arm64:
arm:
multi_v7_defconfig (gcc-8): 6 warnings
mips:
32r2el_defconfig (gcc-8): 3 warnings
riscv:
defconfig (gcc-8): 2 warnings
x86_64:
Warnings summary:
7 <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
1 arch/arm/boot/dts/bcm47094-linksys-panamera.dts:129.4-18: Warning (reg_format): /mdio-bus-mux/mdio@200:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
1 arch/arm/boot/dts/bcm47094-linksys-panamera.dts:128.22-132.5: Warning (avoid_default_addr_size): /mdio-bus-mux/mdio@200: Relying on default #size-cells value
1 arch/arm/boot/dts/bcm47094-linksys-panamera.dts:128.22-132.5: Warning (avoid_default_addr_size): /mdio-bus-mux/mdio@200: Relying on default #address-cells value
1 arch/arm/boot/dts/bcm47094-linksys-panamera.dtb: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
1 arch/arm/boot/dts/bcm47094-linksys-panamera.dtb: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
1 arch/arm/boot/dts/bcm47094-linksys-panamera.dtb: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
================================================================================
Detailed per-defconfig build reports:
--------------------------------------------------------------------------------
32r2el_defconfig (mips, gcc-8) — PASS, 0 errors, 3 warnings, 0 section mismatches
Warnings:
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
--------------------------------------------------------------------------------
defconfig (riscv, gcc-8) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
--------------------------------------------------------------------------------
defconfig (arm64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
multi_v7_defconfig (arm, gcc-8) — PASS, 0 errors, 6 warnings, 0 section mismatches
Warnings:
arch/arm/boot/dts/bcm47094-linksys-panamera.dts:129.4-18: Warning (reg_format): /mdio-bus-mux/mdio@200:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)
arch/arm/boot/dts/bcm47094-linksys-panamera.dtb: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
arch/arm/boot/dts/bcm47094-linksys-panamera.dtb: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
arch/arm/boot/dts/bcm47094-linksys-panamera.dtb: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
arch/arm/boot/dts/bcm47094-linksys-panamera.dts:128.22-132.5: Warning (avoid_default_addr_size): /mdio-bus-mux/mdio@200: Relying on default #address-cells value
arch/arm/boot/dts/bcm47094-linksys-panamera.dts:128.22-132.5: Warning (avoid_default_addr_size): /mdio-bus-mux/mdio@200: Relying on default #size-cells value
--------------------------------------------------------------------------------
nsim_hs_defconfig (arc, gcc-8) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
--------------------------------------------------------------------------------
x86_64_defconfig (x86_64, gcc-8) — PASS, 0 errors, 0 warnings, 0 section mismatches
---
For more info write to <info@kernelci.org>
^ permalink raw reply
* linusw/for-next boot: 41 boots: 1 failed, 39 passed with 1 untried/unknown (gpio-v5.3-3-18-g52d4cb72f265)
From: kernelci.org bot @ 2019-08-06 5:10 UTC (permalink / raw)
To: linux-gpio, fellows
linusw/for-next boot: 41 boots: 1 failed, 39 passed with 1 untried/unknown (gpio-v5.3-3-18-g52d4cb72f265)
Full Boot Summary: https://kernelci.org/boot/all/job/linusw/branch/for-next/kernel/gpio-v5.3-3-18-g52d4cb72f265/
Full Build Summary: https://kernelci.org/build/linusw/branch/for-next/kernel/gpio-v5.3-3-18-g52d4cb72f265/
Tree: linusw
Branch: for-next
Git Describe: gpio-v5.3-3-18-g52d4cb72f265
Git Commit: 52d4cb72f26530572a9a1377ba8427d0203b76e6
Git URL: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git/
Tested: 30 unique boards, 13 SoC families, 3 builds out of 6
Boot Regressions Detected:
arm:
multi_v7_defconfig:
gcc-8:
sun8i-h2-plus-orangepi-r1:
lab-baylibre: new failure (last pass: v5.3-rc1-13-gfb9152b494a9)
arm64:
defconfig:
gcc-8:
apq8016-sbc:
lab-mhart: failing since 7 days (last pass: v5.2-10813-g88785b7fa74a - first fail: v5.3-rc1-10-gd2a561ae1961)
Boot Failure Detected:
arm64:
defconfig:
gcc-8:
apq8016-sbc: 1 failed lab
---
For more info write to <info@kernelci.org>
^ permalink raw reply
* [PATCH v3 1/2] dt-bindings: pinctrl: qcom: Add SC7180 pinctrl binding
From: Rajendra Nayak @ 2019-08-06 6:05 UTC (permalink / raw)
To: linus.walleij, bjorn.andersson
Cc: linux-arm-msm, agross, robh+dt, linux-gpio, devicetree,
linux-kernel, Jitendra Sharma, Vivek Gautam, Rajendra Nayak,
Vinod Koul
From: Jitendra Sharma <shajit@codeaurora.org>
Add the binding for the TLMM pinctrl block found in the SC7180 platform
Signed-off-by: Jitendra Sharma <shajit@codeaurora.org>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
[rnayak: Fix some copy-paste issues, sort and fix functions]
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
---
v3: Minor typo fixes as pointed out by Vinod on v2.
Added Vinods Reviewed-by:
.../bindings/pinctrl/qcom,sc7180-pinctrl.txt | 186 ++++++++++++++++++
1 file changed, 186 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,sc7180-pinctrl.txt
diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,sc7180-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,sc7180-pinctrl.txt
new file mode 100644
index 000000000000..b5767ee82ee6
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,sc7180-pinctrl.txt
@@ -0,0 +1,186 @@
+Qualcomm Technologies, Inc. SC7180 TLMM block
+
+This binding describes the Top Level Mode Multiplexer block found in the
+SC7180 platform.
+
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: must be "qcom,sc7180-pinctrl"
+
+- reg:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: the base address and size of the north, south and west
+ TLMM tiles
+
+- reg-names:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: names for the cells of reg, must contain "north", "south"
+ and "west".
+
+- interrupts:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: should specify the TLMM summary IRQ.
+
+- interrupt-controller:
+ Usage: required
+ Value type: <none>
+ Definition: identifies this node as an interrupt controller
+
+- #interrupt-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: must be 2. Specifying the pin number and flags, as defined
+ in <dt-bindings/interrupt-controller/irq.h>
+
+- gpio-controller:
+ Usage: required
+ Value type: <none>
+ Definition: identifies this node as a gpio controller
+
+- #gpio-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: must be 2. Specifying the pin number and flags, as defined
+ in <dt-bindings/gpio/gpio.h>
+
+- gpio-ranges:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: see ../gpio/gpio.txt
+
+- gpio-reserved-ranges:
+ Usage: optional
+ Value type: <prop-encoded-array>
+ Definition: see ../gpio/gpio.txt
+
+Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
+a general description of GPIO and interrupt bindings.
+
+Please refer to pinctrl-bindings.txt in this directory for details of the
+common pinctrl bindings used by client devices, including the meaning of the
+phrase "pin configuration node".
+
+The pin configuration nodes act as a container for an arbitrary number of
+subnodes. Each of these subnodes represents some desired configuration for a
+pin, a group, or a list of pins or groups. This configuration can include the
+mux function to select on those pin(s)/group(s), and various pin configuration
+parameters, such as pull-up, drive strength, etc.
+
+
+PIN CONFIGURATION NODES:
+
+The name of each subnode is not important; all subnodes should be enumerated
+and processed purely based on their content.
+
+Each subnode only affects those parameters that are explicitly listed. In
+other words, a subnode that lists a mux function but no pin configuration
+parameters implies no information about any pin configuration parameters.
+Similarly, a pin subnode that describes a pullup parameter implies no
+information about e.g. the mux function.
+
+
+The following generic properties as defined in pinctrl-bindings.txt are valid
+to specify in a pin configuration subnode:
+
+- pins:
+ Usage: required
+ Value type: <string-array>
+ Definition: List of gpio pins affected by the properties specified in
+ this subnode.
+
+ Valid pins are:
+ gpio0-gpio118
+ Supports mux, bias and drive-strength
+
+ sdc1_clk, sdc1_cmd, sdc1_data sdc2_clk, sdc2_cmd,
+ sdc2_data sdc1_rclk
+ Supports bias and drive-strength
+
+ ufs_reset
+ Supports bias and drive-strength
+
+- function:
+ Usage: required
+ Value type: <string>
+ Definition: Specify the alternative function to be configured for the
+ specified pins. Functions are only valid for gpio pins.
+ Valid values are:
+
+ adsp_ext, agera_pll, aoss_cti, atest_char, atest_char0,
+ atest_char1, atest_char2, atest_char3, atest_tsens,
+ atest_tsens2, atest_usb1, atest_usb10, atest_usb11,
+ atest_usb12, atest_usb13, atest_usb2, atest_usb20,
+ atest_usb21, atest_usb22, atest_usb23, audio_ref,
+ btfm_slimbus, cam_mclk, cci_async, cci_i2c, cci_timer0,
+ cci_timer1, cci_timer2, cci_timer3, cci_timer4,
+ cri_trng, dbg_out, ddr_bist, ddr_pxi0, ddr_pxi1,
+ ddr_pxi2, ddr_pxi3, dp_hot, edp_lcd, gcc_gp1, gcc_gp2,
+ gcc_gp3, gpio, gp_pdm0, gp_pdm1, gp_pdm2, gps_tx,
+ jitter_bist, ldo_en, ldo_update, lpass_ext, mdp_vsync,
+ mdp_vsync0, mdp_vsync1, mdp_vsync2, mdp_vsync3, mi2s_0,
+ mi2s_1, mi2s_2, mss_lte, m_voc, pa_indicator, phase_flag,
+ PLL_BIST, pll_bypassnl, pll_reset, prng_rosc, qdss,
+ qdss_cti, qlink_enable, qlink_request, qspi_clk, qspi_cs,
+ qspi_data, qup00, qup01, qup02, qup03, qup04, qup05,
+ qup10, qup11, qup12, qup13, qup14, qup15, sdc1_tb,
+ sdc2_tb, sd_write, sp_cmu, tgu_ch0, tgu_ch1, tgu_ch2,
+ tgu_ch3, tsense_pwm1, tsense_pwm2, uim1, uim2, uim_batt,
+ usb_phy, vfr_1, _V_GPIO, _V_PPS_IN, _V_PPS_OUT,
+ vsense_trigger, wlan1_adc0, wlan1_adc1, wlan2_adc0,
+ wlan2_adc1,
+
+- bias-disable:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins should be configured as no pull.
+
+- bias-pull-down:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins should be configured as pull down.
+
+- bias-pull-up:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins should be configured as pull up.
+
+- output-high:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins are configured in output mode, driven
+ high.
+ Not valid for sdc pins.
+
+- output-low:
+ Usage: optional
+ Value type: <none>
+ Definition: The specified pins are configured in output mode, driven
+ low.
+ Not valid for sdc pins.
+
+- drive-strength:
+ Usage: optional
+ Value type: <u32>
+ Definition: Selects the drive strength for the specified pins, in mA.
+ Valid values are: 2, 4, 6, 8, 10, 12, 14 and 16
+
+Example:
+
+ tlmm: pinctrl@3500000 {
+ compatible = "qcom,sc7180-pinctrl";
+ reg = <0x3500000 0x300000>,
+ <0x3900000 0x300000>,
+ <0x3D00000 0x300000>;
+ reg-names = "west", "north", "south";
+ interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&tlmm 0 0 119>;
+ gpio-reserved-ranges = <0 4>, <106 4>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* [PATCH v3 2/2] pinctrl: qcom: Add SC7180 pinctrl driver
From: Rajendra Nayak @ 2019-08-06 6:05 UTC (permalink / raw)
To: linus.walleij, bjorn.andersson
Cc: linux-arm-msm, agross, robh+dt, linux-gpio, devicetree,
linux-kernel, Jitendra Sharma, Vivek Gautam, Rajendra Nayak,
Vinod Koul
In-Reply-To: <20190806060536.18094-1-rnayak@codeaurora.org>
From: Jitendra Sharma <shajit@codeaurora.org>
Add initial pinctrl driver to support pin configuration with
pinctrl framework for SC7180
Signed-off-by: Jitendra Sharma <shajit@codeaurora.org>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
[rnayak: modify to use upstream tile support
sort and squash some functions]
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
---
v3: No change since v2 except for adding Vinods Reviewed-by:
drivers/pinctrl/qcom/Kconfig | 9 +
drivers/pinctrl/qcom/Makefile | 1 +
drivers/pinctrl/qcom/pinctrl-sc7180.c | 1146 +++++++++++++++++++++++++
3 files changed, 1156 insertions(+)
create mode 100644 drivers/pinctrl/qcom/pinctrl-sc7180.c
diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index 8e14a5f2e970..af44dafc35e7 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -158,6 +158,15 @@ config PINCTRL_QCOM_SSBI_PMIC
which are using SSBI for communication with SoC. Example PMIC's
devices are pm8058 and pm8921.
+config PINCTRL_SC7180
+ tristate "Qualcomm Technologies Inc SC7180 pin controller driver"
+ depends on GPIOLIB && OF
+ select PINCTRL_MSM
+ help
+ This is the pinctrl, pinmux, pinconf and gpiolib driver for the
+ Qualcomm Technologies Inc TLMM block found on the Qualcomm
+ Technologies Inc SC7180 platform.
+
config PINCTRL_SDM660
tristate "Qualcomm Technologies Inc SDM660 pin controller driver"
depends on GPIOLIB && OF
diff --git a/drivers/pinctrl/qcom/Makefile b/drivers/pinctrl/qcom/Makefile
index ebe906872272..f8bb0c265381 100644
--- a/drivers/pinctrl/qcom/Makefile
+++ b/drivers/pinctrl/qcom/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_PINCTRL_QCOM_SPMI_PMIC) += pinctrl-spmi-gpio.o
obj-$(CONFIG_PINCTRL_QCOM_SPMI_PMIC) += pinctrl-spmi-mpp.o
obj-$(CONFIG_PINCTRL_QCOM_SSBI_PMIC) += pinctrl-ssbi-gpio.o
obj-$(CONFIG_PINCTRL_QCOM_SSBI_PMIC) += pinctrl-ssbi-mpp.o
+obj-$(CONFIG_PINCTRL_SC7180) += pinctrl-sc7180.o
obj-$(CONFIG_PINCTRL_SDM660) += pinctrl-sdm660.o
obj-$(CONFIG_PINCTRL_SDM845) += pinctrl-sdm845.o
obj-$(CONFIG_PINCTRL_SM8150) += pinctrl-sm8150.o
diff --git a/drivers/pinctrl/qcom/pinctrl-sc7180.c b/drivers/pinctrl/qcom/pinctrl-sc7180.c
new file mode 100644
index 000000000000..6399c8a2bc22
--- /dev/null
+++ b/drivers/pinctrl/qcom/pinctrl-sc7180.c
@@ -0,0 +1,1146 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2019, The Linux Foundation. All rights reserved.
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/pinctrl.h>
+
+#include "pinctrl-msm.h"
+
+static const char * const sc7180_tiles[] = {
+ "north",
+ "south",
+ "west",
+};
+
+enum {
+ NORTH,
+ SOUTH,
+ WEST
+};
+
+#define FUNCTION(fname) \
+ [msm_mux_##fname] = { \
+ .name = #fname, \
+ .groups = fname##_groups, \
+ .ngroups = ARRAY_SIZE(fname##_groups), \
+ }
+
+#define PINGROUP(id, _tile, f1, f2, f3, f4, f5, f6, f7, f8, f9) \
+ { \
+ .name = "gpio" #id, \
+ .pins = gpio##id##_pins, \
+ .npins = ARRAY_SIZE(gpio##id##_pins), \
+ .funcs = (int[]){ \
+ msm_mux_gpio, /* gpio mode */ \
+ msm_mux_##f1, \
+ msm_mux_##f2, \
+ msm_mux_##f3, \
+ msm_mux_##f4, \
+ msm_mux_##f5, \
+ msm_mux_##f6, \
+ msm_mux_##f7, \
+ msm_mux_##f8, \
+ msm_mux_##f9 \
+ }, \
+ .nfuncs = 10, \
+ .ctl_reg = 0x1000 * id, \
+ .io_reg = 0x1000 * id + 0x4, \
+ .intr_cfg_reg = 0x1000 * id + 0x8, \
+ .intr_status_reg = 0x1000 * id + 0xc, \
+ .intr_target_reg = 0x1000 * id + 0x8, \
+ .tile = _tile, \
+ .mux_bit = 2, \
+ .pull_bit = 0, \
+ .drv_bit = 6, \
+ .oe_bit = 9, \
+ .in_bit = 0, \
+ .out_bit = 1, \
+ .intr_enable_bit = 0, \
+ .intr_status_bit = 0, \
+ .intr_target_bit = 5, \
+ .intr_target_kpss_val = 3, \
+ .intr_raw_status_bit = 4, \
+ .intr_polarity_bit = 1, \
+ .intr_detection_bit = 2, \
+ .intr_detection_width = 2, \
+ }
+
+#define SDC_QDSD_PINGROUP(pg_name, ctl, pull, drv) \
+ { \
+ .name = #pg_name, \
+ .pins = pg_name##_pins, \
+ .npins = ARRAY_SIZE(pg_name##_pins), \
+ .ctl_reg = ctl, \
+ .io_reg = 0, \
+ .intr_cfg_reg = 0, \
+ .intr_status_reg = 0, \
+ .intr_target_reg = 0, \
+ .mux_bit = -1, \
+ .pull_bit = pull, \
+ .drv_bit = drv, \
+ .oe_bit = -1, \
+ .in_bit = -1, \
+ .out_bit = -1, \
+ .intr_enable_bit = -1, \
+ .intr_status_bit = -1, \
+ .intr_target_bit = -1, \
+ .intr_raw_status_bit = -1, \
+ .intr_polarity_bit = -1, \
+ .intr_detection_bit = -1, \
+ .intr_detection_width = -1, \
+ }
+
+#define UFS_RESET(pg_name, offset) \
+ { \
+ .name = #pg_name, \
+ .pins = pg_name##_pins, \
+ .npins = ARRAY_SIZE(pg_name##_pins), \
+ .ctl_reg = offset, \
+ .io_reg = offset + 0x4, \
+ .intr_cfg_reg = 0, \
+ .intr_status_reg = 0, \
+ .intr_target_reg = 0, \
+ .mux_bit = -1, \
+ .pull_bit = 3, \
+ .drv_bit = 0, \
+ .oe_bit = -1, \
+ .in_bit = -1, \
+ .out_bit = 0, \
+ .intr_enable_bit = -1, \
+ .intr_status_bit = -1, \
+ .intr_target_bit = -1, \
+ .intr_raw_status_bit = -1, \
+ .intr_polarity_bit = -1, \
+ .intr_detection_bit = -1, \
+ .intr_detection_width = -1, \
+ }
+static const struct pinctrl_pin_desc sc7180_pins[] = {
+ PINCTRL_PIN(0, "GPIO_0"),
+ PINCTRL_PIN(1, "GPIO_1"),
+ PINCTRL_PIN(2, "GPIO_2"),
+ PINCTRL_PIN(3, "GPIO_3"),
+ PINCTRL_PIN(4, "GPIO_4"),
+ PINCTRL_PIN(5, "GPIO_5"),
+ PINCTRL_PIN(6, "GPIO_6"),
+ PINCTRL_PIN(7, "GPIO_7"),
+ PINCTRL_PIN(8, "GPIO_8"),
+ PINCTRL_PIN(9, "GPIO_9"),
+ PINCTRL_PIN(10, "GPIO_10"),
+ PINCTRL_PIN(11, "GPIO_11"),
+ PINCTRL_PIN(12, "GPIO_12"),
+ PINCTRL_PIN(13, "GPIO_13"),
+ PINCTRL_PIN(14, "GPIO_14"),
+ PINCTRL_PIN(15, "GPIO_15"),
+ PINCTRL_PIN(16, "GPIO_16"),
+ PINCTRL_PIN(17, "GPIO_17"),
+ PINCTRL_PIN(18, "GPIO_18"),
+ PINCTRL_PIN(19, "GPIO_19"),
+ PINCTRL_PIN(20, "GPIO_20"),
+ PINCTRL_PIN(21, "GPIO_21"),
+ PINCTRL_PIN(22, "GPIO_22"),
+ PINCTRL_PIN(23, "GPIO_23"),
+ PINCTRL_PIN(24, "GPIO_24"),
+ PINCTRL_PIN(25, "GPIO_25"),
+ PINCTRL_PIN(26, "GPIO_26"),
+ PINCTRL_PIN(27, "GPIO_27"),
+ PINCTRL_PIN(28, "GPIO_28"),
+ PINCTRL_PIN(29, "GPIO_29"),
+ PINCTRL_PIN(30, "GPIO_30"),
+ PINCTRL_PIN(31, "GPIO_31"),
+ PINCTRL_PIN(32, "GPIO_32"),
+ PINCTRL_PIN(33, "GPIO_33"),
+ PINCTRL_PIN(34, "GPIO_34"),
+ PINCTRL_PIN(35, "GPIO_35"),
+ PINCTRL_PIN(36, "GPIO_36"),
+ PINCTRL_PIN(37, "GPIO_37"),
+ PINCTRL_PIN(38, "GPIO_38"),
+ PINCTRL_PIN(39, "GPIO_39"),
+ PINCTRL_PIN(40, "GPIO_40"),
+ PINCTRL_PIN(41, "GPIO_41"),
+ PINCTRL_PIN(42, "GPIO_42"),
+ PINCTRL_PIN(43, "GPIO_43"),
+ PINCTRL_PIN(44, "GPIO_44"),
+ PINCTRL_PIN(45, "GPIO_45"),
+ PINCTRL_PIN(46, "GPIO_46"),
+ PINCTRL_PIN(47, "GPIO_47"),
+ PINCTRL_PIN(48, "GPIO_48"),
+ PINCTRL_PIN(49, "GPIO_49"),
+ PINCTRL_PIN(50, "GPIO_50"),
+ PINCTRL_PIN(51, "GPIO_51"),
+ PINCTRL_PIN(52, "GPIO_52"),
+ PINCTRL_PIN(53, "GPIO_53"),
+ PINCTRL_PIN(54, "GPIO_54"),
+ PINCTRL_PIN(55, "GPIO_55"),
+ PINCTRL_PIN(56, "GPIO_56"),
+ PINCTRL_PIN(57, "GPIO_57"),
+ PINCTRL_PIN(58, "GPIO_58"),
+ PINCTRL_PIN(59, "GPIO_59"),
+ PINCTRL_PIN(60, "GPIO_60"),
+ PINCTRL_PIN(61, "GPIO_61"),
+ PINCTRL_PIN(62, "GPIO_62"),
+ PINCTRL_PIN(63, "GPIO_63"),
+ PINCTRL_PIN(64, "GPIO_64"),
+ PINCTRL_PIN(65, "GPIO_65"),
+ PINCTRL_PIN(66, "GPIO_66"),
+ PINCTRL_PIN(67, "GPIO_67"),
+ PINCTRL_PIN(68, "GPIO_68"),
+ PINCTRL_PIN(69, "GPIO_69"),
+ PINCTRL_PIN(70, "GPIO_70"),
+ PINCTRL_PIN(71, "GPIO_71"),
+ PINCTRL_PIN(72, "GPIO_72"),
+ PINCTRL_PIN(73, "GPIO_73"),
+ PINCTRL_PIN(74, "GPIO_74"),
+ PINCTRL_PIN(75, "GPIO_75"),
+ PINCTRL_PIN(76, "GPIO_76"),
+ PINCTRL_PIN(77, "GPIO_77"),
+ PINCTRL_PIN(78, "GPIO_78"),
+ PINCTRL_PIN(79, "GPIO_79"),
+ PINCTRL_PIN(80, "GPIO_80"),
+ PINCTRL_PIN(81, "GPIO_81"),
+ PINCTRL_PIN(82, "GPIO_82"),
+ PINCTRL_PIN(83, "GPIO_83"),
+ PINCTRL_PIN(84, "GPIO_84"),
+ PINCTRL_PIN(85, "GPIO_85"),
+ PINCTRL_PIN(86, "GPIO_86"),
+ PINCTRL_PIN(87, "GPIO_87"),
+ PINCTRL_PIN(88, "GPIO_88"),
+ PINCTRL_PIN(89, "GPIO_89"),
+ PINCTRL_PIN(90, "GPIO_90"),
+ PINCTRL_PIN(91, "GPIO_91"),
+ PINCTRL_PIN(92, "GPIO_92"),
+ PINCTRL_PIN(93, "GPIO_93"),
+ PINCTRL_PIN(94, "GPIO_94"),
+ PINCTRL_PIN(95, "GPIO_95"),
+ PINCTRL_PIN(96, "GPIO_96"),
+ PINCTRL_PIN(97, "GPIO_97"),
+ PINCTRL_PIN(98, "GPIO_98"),
+ PINCTRL_PIN(99, "GPIO_99"),
+ PINCTRL_PIN(100, "GPIO_100"),
+ PINCTRL_PIN(101, "GPIO_101"),
+ PINCTRL_PIN(102, "GPIO_102"),
+ PINCTRL_PIN(103, "GPIO_103"),
+ PINCTRL_PIN(104, "GPIO_104"),
+ PINCTRL_PIN(105, "GPIO_105"),
+ PINCTRL_PIN(106, "GPIO_106"),
+ PINCTRL_PIN(107, "GPIO_107"),
+ PINCTRL_PIN(108, "GPIO_108"),
+ PINCTRL_PIN(109, "GPIO_109"),
+ PINCTRL_PIN(110, "GPIO_110"),
+ PINCTRL_PIN(111, "GPIO_111"),
+ PINCTRL_PIN(112, "GPIO_112"),
+ PINCTRL_PIN(113, "GPIO_113"),
+ PINCTRL_PIN(114, "GPIO_114"),
+ PINCTRL_PIN(115, "GPIO_115"),
+ PINCTRL_PIN(116, "GPIO_116"),
+ PINCTRL_PIN(117, "GPIO_117"),
+ PINCTRL_PIN(118, "GPIO_118"),
+ PINCTRL_PIN(119, "UFS_RESET"),
+ PINCTRL_PIN(120, "SDC1_RCLK"),
+ PINCTRL_PIN(121, "SDC1_CLK"),
+ PINCTRL_PIN(122, "SDC1_CMD"),
+ PINCTRL_PIN(123, "SDC1_DATA"),
+ PINCTRL_PIN(124, "SDC2_CLK"),
+ PINCTRL_PIN(125, "SDC2_CMD"),
+ PINCTRL_PIN(126, "SDC2_DATA"),
+};
+
+#define DECLARE_MSM_GPIO_PINS(pin) \
+ static const unsigned int gpio##pin##_pins[] = { pin }
+DECLARE_MSM_GPIO_PINS(0);
+DECLARE_MSM_GPIO_PINS(1);
+DECLARE_MSM_GPIO_PINS(2);
+DECLARE_MSM_GPIO_PINS(3);
+DECLARE_MSM_GPIO_PINS(4);
+DECLARE_MSM_GPIO_PINS(5);
+DECLARE_MSM_GPIO_PINS(6);
+DECLARE_MSM_GPIO_PINS(7);
+DECLARE_MSM_GPIO_PINS(8);
+DECLARE_MSM_GPIO_PINS(9);
+DECLARE_MSM_GPIO_PINS(10);
+DECLARE_MSM_GPIO_PINS(11);
+DECLARE_MSM_GPIO_PINS(12);
+DECLARE_MSM_GPIO_PINS(13);
+DECLARE_MSM_GPIO_PINS(14);
+DECLARE_MSM_GPIO_PINS(15);
+DECLARE_MSM_GPIO_PINS(16);
+DECLARE_MSM_GPIO_PINS(17);
+DECLARE_MSM_GPIO_PINS(18);
+DECLARE_MSM_GPIO_PINS(19);
+DECLARE_MSM_GPIO_PINS(20);
+DECLARE_MSM_GPIO_PINS(21);
+DECLARE_MSM_GPIO_PINS(22);
+DECLARE_MSM_GPIO_PINS(23);
+DECLARE_MSM_GPIO_PINS(24);
+DECLARE_MSM_GPIO_PINS(25);
+DECLARE_MSM_GPIO_PINS(26);
+DECLARE_MSM_GPIO_PINS(27);
+DECLARE_MSM_GPIO_PINS(28);
+DECLARE_MSM_GPIO_PINS(29);
+DECLARE_MSM_GPIO_PINS(30);
+DECLARE_MSM_GPIO_PINS(31);
+DECLARE_MSM_GPIO_PINS(32);
+DECLARE_MSM_GPIO_PINS(33);
+DECLARE_MSM_GPIO_PINS(34);
+DECLARE_MSM_GPIO_PINS(35);
+DECLARE_MSM_GPIO_PINS(36);
+DECLARE_MSM_GPIO_PINS(37);
+DECLARE_MSM_GPIO_PINS(38);
+DECLARE_MSM_GPIO_PINS(39);
+DECLARE_MSM_GPIO_PINS(40);
+DECLARE_MSM_GPIO_PINS(41);
+DECLARE_MSM_GPIO_PINS(42);
+DECLARE_MSM_GPIO_PINS(43);
+DECLARE_MSM_GPIO_PINS(44);
+DECLARE_MSM_GPIO_PINS(45);
+DECLARE_MSM_GPIO_PINS(46);
+DECLARE_MSM_GPIO_PINS(47);
+DECLARE_MSM_GPIO_PINS(48);
+DECLARE_MSM_GPIO_PINS(49);
+DECLARE_MSM_GPIO_PINS(50);
+DECLARE_MSM_GPIO_PINS(51);
+DECLARE_MSM_GPIO_PINS(52);
+DECLARE_MSM_GPIO_PINS(53);
+DECLARE_MSM_GPIO_PINS(54);
+DECLARE_MSM_GPIO_PINS(55);
+DECLARE_MSM_GPIO_PINS(56);
+DECLARE_MSM_GPIO_PINS(57);
+DECLARE_MSM_GPIO_PINS(58);
+DECLARE_MSM_GPIO_PINS(59);
+DECLARE_MSM_GPIO_PINS(60);
+DECLARE_MSM_GPIO_PINS(61);
+DECLARE_MSM_GPIO_PINS(62);
+DECLARE_MSM_GPIO_PINS(63);
+DECLARE_MSM_GPIO_PINS(64);
+DECLARE_MSM_GPIO_PINS(65);
+DECLARE_MSM_GPIO_PINS(66);
+DECLARE_MSM_GPIO_PINS(67);
+DECLARE_MSM_GPIO_PINS(68);
+DECLARE_MSM_GPIO_PINS(69);
+DECLARE_MSM_GPIO_PINS(70);
+DECLARE_MSM_GPIO_PINS(71);
+DECLARE_MSM_GPIO_PINS(72);
+DECLARE_MSM_GPIO_PINS(73);
+DECLARE_MSM_GPIO_PINS(74);
+DECLARE_MSM_GPIO_PINS(75);
+DECLARE_MSM_GPIO_PINS(76);
+DECLARE_MSM_GPIO_PINS(77);
+DECLARE_MSM_GPIO_PINS(78);
+DECLARE_MSM_GPIO_PINS(79);
+DECLARE_MSM_GPIO_PINS(80);
+DECLARE_MSM_GPIO_PINS(81);
+DECLARE_MSM_GPIO_PINS(82);
+DECLARE_MSM_GPIO_PINS(83);
+DECLARE_MSM_GPIO_PINS(84);
+DECLARE_MSM_GPIO_PINS(85);
+DECLARE_MSM_GPIO_PINS(86);
+DECLARE_MSM_GPIO_PINS(87);
+DECLARE_MSM_GPIO_PINS(88);
+DECLARE_MSM_GPIO_PINS(89);
+DECLARE_MSM_GPIO_PINS(90);
+DECLARE_MSM_GPIO_PINS(91);
+DECLARE_MSM_GPIO_PINS(92);
+DECLARE_MSM_GPIO_PINS(93);
+DECLARE_MSM_GPIO_PINS(94);
+DECLARE_MSM_GPIO_PINS(95);
+DECLARE_MSM_GPIO_PINS(96);
+DECLARE_MSM_GPIO_PINS(97);
+DECLARE_MSM_GPIO_PINS(98);
+DECLARE_MSM_GPIO_PINS(99);
+DECLARE_MSM_GPIO_PINS(100);
+DECLARE_MSM_GPIO_PINS(101);
+DECLARE_MSM_GPIO_PINS(102);
+DECLARE_MSM_GPIO_PINS(103);
+DECLARE_MSM_GPIO_PINS(104);
+DECLARE_MSM_GPIO_PINS(105);
+DECLARE_MSM_GPIO_PINS(106);
+DECLARE_MSM_GPIO_PINS(107);
+DECLARE_MSM_GPIO_PINS(108);
+DECLARE_MSM_GPIO_PINS(109);
+DECLARE_MSM_GPIO_PINS(110);
+DECLARE_MSM_GPIO_PINS(111);
+DECLARE_MSM_GPIO_PINS(112);
+DECLARE_MSM_GPIO_PINS(113);
+DECLARE_MSM_GPIO_PINS(114);
+DECLARE_MSM_GPIO_PINS(115);
+DECLARE_MSM_GPIO_PINS(116);
+DECLARE_MSM_GPIO_PINS(117);
+DECLARE_MSM_GPIO_PINS(118);
+
+static const unsigned int ufs_reset_pins[] = { 119 };
+static const unsigned int sdc1_rclk_pins[] = { 120 };
+static const unsigned int sdc1_clk_pins[] = { 121 };
+static const unsigned int sdc1_cmd_pins[] = { 122 };
+static const unsigned int sdc1_data_pins[] = { 123 };
+static const unsigned int sdc2_clk_pins[] = { 124 };
+static const unsigned int sdc2_cmd_pins[] = { 125 };
+static const unsigned int sdc2_data_pins[] = { 126 };
+
+enum sc7180_functions {
+ msm_mux_adsp_ext,
+ msm_mux_agera_pll,
+ msm_mux_aoss_cti,
+ msm_mux_atest_char,
+ msm_mux_atest_char0,
+ msm_mux_atest_char1,
+ msm_mux_atest_char2,
+ msm_mux_atest_char3,
+ msm_mux_atest_tsens,
+ msm_mux_atest_tsens2,
+ msm_mux_atest_usb1,
+ msm_mux_atest_usb2,
+ msm_mux_atest_usb10,
+ msm_mux_atest_usb11,
+ msm_mux_atest_usb12,
+ msm_mux_atest_usb13,
+ msm_mux_atest_usb20,
+ msm_mux_atest_usb21,
+ msm_mux_atest_usb22,
+ msm_mux_atest_usb23,
+ msm_mux_audio_ref,
+ msm_mux_btfm_slimbus,
+ msm_mux_cam_mclk,
+ msm_mux_cci_async,
+ msm_mux_cci_i2c,
+ msm_mux_cci_timer0,
+ msm_mux_cci_timer1,
+ msm_mux_cci_timer2,
+ msm_mux_cci_timer3,
+ msm_mux_cci_timer4,
+ msm_mux_cri_trng,
+ msm_mux_dbg_out,
+ msm_mux_ddr_bist,
+ msm_mux_ddr_pxi0,
+ msm_mux_ddr_pxi1,
+ msm_mux_ddr_pxi2,
+ msm_mux_ddr_pxi3,
+ msm_mux_dp_hot,
+ msm_mux_edp_lcd,
+ msm_mux_gcc_gp1,
+ msm_mux_gcc_gp2,
+ msm_mux_gcc_gp3,
+ msm_mux_gpio,
+ msm_mux_gp_pdm0,
+ msm_mux_gp_pdm1,
+ msm_mux_gp_pdm2,
+ msm_mux_gps_tx,
+ msm_mux_jitter_bist,
+ msm_mux_ldo_en,
+ msm_mux_ldo_update,
+ msm_mux_lpass_ext,
+ msm_mux_mdp_vsync,
+ msm_mux_mdp_vsync0,
+ msm_mux_mdp_vsync1,
+ msm_mux_mdp_vsync2,
+ msm_mux_mdp_vsync3,
+ msm_mux_mi2s_1,
+ msm_mux_mi2s_0,
+ msm_mux_mi2s_2,
+ msm_mux_mss_lte,
+ msm_mux_m_voc,
+ msm_mux_pa_indicator,
+ msm_mux_phase_flag,
+ msm_mux_PLL_BIST,
+ msm_mux_pll_bypassnl,
+ msm_mux_pll_reset,
+ msm_mux_prng_rosc,
+ msm_mux_qdss,
+ msm_mux_qdss_cti,
+ msm_mux_qlink_enable,
+ msm_mux_qlink_request,
+ msm_mux_qspi_clk,
+ msm_mux_qspi_cs,
+ msm_mux_qspi_data,
+ msm_mux_qup00,
+ msm_mux_qup01,
+ msm_mux_qup02,
+ msm_mux_qup03,
+ msm_mux_qup04,
+ msm_mux_qup05,
+ msm_mux_qup10,
+ msm_mux_qup11,
+ msm_mux_qup12,
+ msm_mux_qup13,
+ msm_mux_qup14,
+ msm_mux_qup15,
+ msm_mux_sdc1_tb,
+ msm_mux_sdc2_tb,
+ msm_mux_sd_write,
+ msm_mux_sp_cmu,
+ msm_mux_tgu_ch0,
+ msm_mux_tgu_ch1,
+ msm_mux_tgu_ch2,
+ msm_mux_tgu_ch3,
+ msm_mux_tsense_pwm1,
+ msm_mux_tsense_pwm2,
+ msm_mux_uim1,
+ msm_mux_uim2,
+ msm_mux_uim_batt,
+ msm_mux_usb_phy,
+ msm_mux_vfr_1,
+ msm_mux__V_GPIO,
+ msm_mux__V_PPS_IN,
+ msm_mux__V_PPS_OUT,
+ msm_mux_vsense_trigger,
+ msm_mux_wlan1_adc0,
+ msm_mux_wlan1_adc1,
+ msm_mux_wlan2_adc0,
+ msm_mux_wlan2_adc1,
+ msm_mux__,
+};
+
+static const char * const qup01_groups[] = {
+ "gpio0", "gpio1", "gpio2", "gpio3", "gpio12", "gpio94",
+};
+static const char * const gpio_groups[] = {
+ "gpio0", "gpio1", "gpio2", "gpio3", "gpio4", "gpio5", "gpio6", "gpio7",
+ "gpio8", "gpio9", "gpio10", "gpio11", "gpio12", "gpio13", "gpio14",
+ "gpio15", "gpio16", "gpio17", "gpio18", "gpio19", "gpio20", "gpio21",
+ "gpio22", "gpio23", "gpio24", "gpio25", "gpio26", "gpio27", "gpio28",
+ "gpio29", "gpio30", "gpio31", "gpio32", "gpio33", "gpio34", "gpio35",
+ "gpio36", "gpio37", "gpio38", "gpio39", "gpio40", "gpio41", "gpio42",
+ "gpio43", "gpio44", "gpio45", "gpio46", "gpio47", "gpio48", "gpio49",
+ "gpio50", "gpio51", "gpio52", "gpio53", "gpio54", "gpio55", "gpio56",
+ "gpio57", "gpio58", "gpio59", "gpio60", "gpio61", "gpio62", "gpio63",
+ "gpio64", "gpio65", "gpio66", "gpio67", "gpio68", "gpio69", "gpio70",
+ "gpio71", "gpio72", "gpio73", "gpio74", "gpio75", "gpio76", "gpio77",
+ "gpio78", "gpio79", "gpio80", "gpio81", "gpio82", "gpio83", "gpio84",
+ "gpio85", "gpio86", "gpio87", "gpio88", "gpio89", "gpio90", "gpio91",
+ "gpio92", "gpio93", "gpio94", "gpio95", "gpio96", "gpio97", "gpio98",
+ "gpio99", "gpio100", "gpio101", "gpio102", "gpio103", "gpio104",
+ "gpio105", "gpio106", "gpio107", "gpio108", "gpio109", "gpio110",
+ "gpio111", "gpio112", "gpio113", "gpio114", "gpio115", "gpio116",
+ "gpio117", "gpio118",
+};
+static const char * const phase_flag_groups[] = {
+ "gpio0", "gpio1", "gpio2", "gpio8", "gpio9",
+ "gpio11", "gpio12", "gpio17", "gpio18", "gpio19",
+ "gpio20", "gpio25", "gpio26", "gpio27", "gpio28",
+ "gpio32", "gpio33", "gpio34", "gpio35", "gpio36",
+ "gpio37", "gpio38", "gpio39", "gpio42", "gpio44",
+ "gpio56", "gpio57", "gpio58", "gpio63", "gpio64",
+ "gpio108", "gpio109",
+};
+static const char * const cri_trng_groups[] = {
+ "gpio0", "gpio1", "gpio2",
+};
+static const char * const sp_cmu_groups[] = {
+ "gpio3",
+};
+static const char * const dbg_out_groups[] = {
+ "gpio3",
+};
+static const char * const qdss_cti_groups[] = {
+ "gpio3", "gpio4", "gpio8", "gpio9", "gpio33", "gpio44", "gpio45",
+ "gpio72",
+};
+static const char * const sdc1_tb_groups[] = {
+ "gpio4",
+};
+static const char * const sdc2_tb_groups[] = {
+ "gpio5",
+};
+static const char * const qup11_groups[] = {
+ "gpio6", "gpio7",
+};
+static const char * const ddr_bist_groups[] = {
+ "gpio7", "gpio8", "gpio9", "gpio10",
+};
+static const char * const gp_pdm1_groups[] = {
+ "gpio8", "gpio50",
+};
+static const char * const mdp_vsync_groups[] = {
+ "gpio10", "gpio11", "gpio12", "gpio70", "gpio71",
+};
+static const char * const edp_lcd_groups[] = {
+ "gpio11",
+};
+static const char * const ddr_pxi2_groups[] = {
+ "gpio11", "gpio26",
+};
+static const char * const m_voc_groups[] = {
+ "gpio12",
+};
+static const char * const wlan2_adc0_groups[] = {
+ "gpio12",
+};
+static const char * const atest_usb10_groups[] = {
+ "gpio12",
+};
+static const char * const ddr_pxi3_groups[] = {
+ "gpio12", "gpio108",
+};
+static const char * const cam_mclk_groups[] = {
+ "gpio13", "gpio14", "gpio15", "gpio16", "gpio23",
+};
+static const char * const pll_bypassnl_groups[] = {
+ "gpio13",
+};
+static const char * const qdss_groups[] = {
+ "gpio13", "gpio86", "gpio14", "gpio87",
+ "gpio15", "gpio88", "gpio16", "gpio89",
+ "gpio17", "gpio90", "gpio18", "gpio91",
+ "gpio19", "gpio21", "gpio20", "gpio22",
+ "gpio23", "gpio54", "gpio24", "gpio36",
+ "gpio25", "gpio57", "gpio26", "gpio31",
+ "gpio27", "gpio56", "gpio28", "gpio29",
+ "gpio30", "gpio35", "gpio93", "gpio104",
+ "gpio34", "gpio53", "gpio37", "gpio55",
+};
+static const char * const pll_reset_groups[] = {
+ "gpio14",
+};
+static const char * const qup02_groups[] = {
+ "gpio15", "gpio16",
+};
+static const char * const cci_i2c_groups[] = {
+ "gpio17", "gpio18", "gpio19", "gpio20", "gpio27", "gpio28",
+};
+static const char * const wlan1_adc0_groups[] = {
+ "gpio17",
+};
+static const char * const atest_usb12_groups[] = {
+ "gpio17",
+};
+static const char * const ddr_pxi1_groups[] = {
+ "gpio17", "gpio44",
+};
+static const char * const atest_char_groups[] = {
+ "gpio17",
+};
+static const char * const agera_pll_groups[] = {
+ "gpio18",
+};
+static const char * const vsense_trigger_groups[] = {
+ "gpio18",
+};
+static const char * const ddr_pxi0_groups[] = {
+ "gpio18", "gpio27",
+};
+static const char * const atest_char3_groups[] = {
+ "gpio18",
+};
+static const char * const atest_char2_groups[] = {
+ "gpio19",
+};
+static const char * const atest_char1_groups[] = {
+ "gpio20",
+};
+static const char * const cci_timer0_groups[] = {
+ "gpio21",
+};
+static const char * const gcc_gp2_groups[] = {
+ "gpio21",
+};
+static const char * const atest_char0_groups[] = {
+ "gpio21",
+};
+static const char * const cci_timer1_groups[] = {
+ "gpio22",
+};
+static const char * const gcc_gp3_groups[] = {
+ "gpio22",
+};
+static const char * const cci_timer2_groups[] = {
+ "gpio23",
+};
+static const char * const cci_timer3_groups[] = {
+ "gpio24",
+};
+static const char * const cci_async_groups[] = {
+ "gpio24", "gpio25", "gpio26",
+};
+static const char * const cci_timer4_groups[] = {
+ "gpio25",
+};
+static const char * const qup05_groups[] = {
+ "gpio25", "gpio26", "gpio27", "gpio28",
+};
+static const char * const atest_tsens_groups[] = {
+ "gpio26",
+};
+static const char * const atest_usb11_groups[] = {
+ "gpio26",
+};
+static const char * const PLL_BIST_groups[] = {
+ "gpio27",
+};
+static const char * const sd_write_groups[] = {
+ "gpio33",
+};
+static const char * const qup00_groups[] = {
+ "gpio34", "gpio35", "gpio36", "gpio37",
+};
+static const char * const gp_pdm0_groups[] = {
+ "gpio37", "gpio68",
+};
+static const char * const qup03_groups[] = {
+ "gpio38", "gpio39", "gpio40", "gpio41",
+};
+static const char * const atest_tsens2_groups[] = {
+ "gpio39",
+};
+static const char * const wlan2_adc1_groups[] = {
+ "gpio39",
+};
+static const char * const atest_usb1_groups[] = {
+ "gpio39",
+};
+static const char * const qup12_groups[] = {
+ "gpio42", "gpio43", "gpio44", "gpio45",
+};
+static const char * const wlan1_adc1_groups[] = {
+ "gpio44",
+};
+static const char * const atest_usb13_groups[] = {
+ "gpio44",
+};
+static const char * const qup13_groups[] = {
+ "gpio46", "gpio47",
+};
+static const char * const gcc_gp1_groups[] = {
+ "gpio48", "gpio56",
+};
+static const char * const mi2s_1_groups[] = {
+ "gpio49", "gpio50", "gpio51", "gpio52",
+};
+static const char * const btfm_slimbus_groups[] = {
+ "gpio49", "gpio50", "gpio51", "gpio52",
+};
+static const char * const atest_usb2_groups[] = {
+ "gpio51",
+};
+static const char * const atest_usb23_groups[] = {
+ "gpio52",
+};
+static const char * const mi2s_0_groups[] = {
+ "gpio53", "gpio54", "gpio55", "gpio56",
+};
+static const char * const qup15_groups[] = {
+ "gpio53", "gpio54", "gpio55", "gpio56",
+};
+static const char * const atest_usb22_groups[] = {
+ "gpio53",
+};
+static const char * const atest_usb21_groups[] = {
+ "gpio54",
+};
+static const char * const atest_usb20_groups[] = {
+ "gpio55",
+};
+static const char * const lpass_ext_groups[] = {
+ "gpio57", "gpio58",
+};
+static const char * const audio_ref_groups[] = {
+ "gpio57",
+};
+static const char * const jitter_bist_groups[] = {
+ "gpio57",
+};
+static const char * const gp_pdm2_groups[] = {
+ "gpio57",
+};
+static const char * const qup10_groups[] = {
+ "gpio59", "gpio60", "gpio61", "gpio62", "gpio68", "gpio72",
+};
+static const char * const tgu_ch3_groups[] = {
+ "gpio62",
+};
+static const char * const qspi_clk_groups[] = {
+ "gpio63",
+};
+static const char * const mdp_vsync0_groups[] = {
+ "gpio63",
+};
+static const char * const mi2s_2_groups[] = {
+ "gpio63", "gpio64", "gpio65", "gpio66",
+};
+static const char * const mdp_vsync1_groups[] = {
+ "gpio63",
+};
+static const char * const mdp_vsync2_groups[] = {
+ "gpio63",
+};
+static const char * const mdp_vsync3_groups[] = {
+ "gpio63",
+};
+static const char * const tgu_ch0_groups[] = {
+ "gpio63",
+};
+static const char * const qspi_data_groups[] = {
+ "gpio64", "gpio65", "gpio66", "gpio67",
+};
+static const char * const tgu_ch1_groups[] = {
+ "gpio64",
+};
+static const char * const vfr_1_groups[] = {
+ "gpio65",
+};
+static const char * const tgu_ch2_groups[] = {
+ "gpio65",
+};
+static const char * const qspi_cs_groups[] = {
+ "gpio68", "gpio72",
+};
+static const char * const ldo_en_groups[] = {
+ "gpio70",
+};
+static const char * const ldo_update_groups[] = {
+ "gpio71",
+};
+static const char * const prng_rosc_groups[] = {
+ "gpio72",
+};
+static const char * const uim2_groups[] = {
+ "gpio75", "gpio76", "gpio77", "gpio78",
+};
+static const char * const uim1_groups[] = {
+ "gpio79", "gpio80", "gpio81", "gpio82",
+};
+static const char * const _V_GPIO_groups[] = {
+ "gpio83", "gpio84", "gpio107",
+};
+static const char * const _V_PPS_IN_groups[] = {
+ "gpio83", "gpio84", "gpio107",
+};
+static const char * const _V_PPS_OUT_groups[] = {
+ "gpio83", "gpio84", "gpio107",
+};
+static const char * const gps_tx_groups[] = {
+ "gpio83", "gpio84", "gpio107", "gpio109",
+};
+static const char * const uim_batt_groups[] = {
+ "gpio85",
+};
+static const char * const dp_hot_groups[] = {
+ "gpio85", "gpio117",
+};
+static const char * const aoss_cti_groups[] = {
+ "gpio85",
+};
+static const char * const qup14_groups[] = {
+ "gpio86", "gpio87", "gpio88", "gpio89", "gpio90", "gpio91",
+};
+static const char * const adsp_ext_groups[] = {
+ "gpio87",
+};
+static const char * const tsense_pwm1_groups[] = {
+ "gpio88",
+};
+static const char * const tsense_pwm2_groups[] = {
+ "gpio88",
+};
+static const char * const qlink_request_groups[] = {
+ "gpio96",
+};
+static const char * const qlink_enable_groups[] = {
+ "gpio97",
+};
+static const char * const pa_indicator_groups[] = {
+ "gpio99",
+};
+static const char * const usb_phy_groups[] = {
+ "gpio104",
+};
+static const char * const mss_lte_groups[] = {
+ "gpio108", "gpio109",
+};
+static const char * const qup04_groups[] = {
+ "gpio115", "gpio116",
+};
+
+static const struct msm_function sc7180_functions[] = {
+ FUNCTION(adsp_ext),
+ FUNCTION(agera_pll),
+ FUNCTION(aoss_cti),
+ FUNCTION(atest_char),
+ FUNCTION(atest_char0),
+ FUNCTION(atest_char1),
+ FUNCTION(atest_char2),
+ FUNCTION(atest_char3),
+ FUNCTION(atest_tsens),
+ FUNCTION(atest_tsens2),
+ FUNCTION(atest_usb1),
+ FUNCTION(atest_usb2),
+ FUNCTION(atest_usb10),
+ FUNCTION(atest_usb11),
+ FUNCTION(atest_usb12),
+ FUNCTION(atest_usb13),
+ FUNCTION(atest_usb20),
+ FUNCTION(atest_usb21),
+ FUNCTION(atest_usb22),
+ FUNCTION(atest_usb23),
+ FUNCTION(audio_ref),
+ FUNCTION(btfm_slimbus),
+ FUNCTION(cam_mclk),
+ FUNCTION(cci_async),
+ FUNCTION(cci_i2c),
+ FUNCTION(cci_timer0),
+ FUNCTION(cci_timer1),
+ FUNCTION(cci_timer2),
+ FUNCTION(cci_timer3),
+ FUNCTION(cci_timer4),
+ FUNCTION(cri_trng),
+ FUNCTION(dbg_out),
+ FUNCTION(ddr_bist),
+ FUNCTION(ddr_pxi0),
+ FUNCTION(ddr_pxi1),
+ FUNCTION(ddr_pxi2),
+ FUNCTION(ddr_pxi3),
+ FUNCTION(dp_hot),
+ FUNCTION(edp_lcd),
+ FUNCTION(gcc_gp1),
+ FUNCTION(gcc_gp2),
+ FUNCTION(gcc_gp3),
+ FUNCTION(gpio),
+ FUNCTION(gp_pdm0),
+ FUNCTION(gp_pdm1),
+ FUNCTION(gp_pdm2),
+ FUNCTION(gps_tx),
+ FUNCTION(jitter_bist),
+ FUNCTION(ldo_en),
+ FUNCTION(ldo_update),
+ FUNCTION(lpass_ext),
+ FUNCTION(mdp_vsync),
+ FUNCTION(mdp_vsync0),
+ FUNCTION(mdp_vsync1),
+ FUNCTION(mdp_vsync2),
+ FUNCTION(mdp_vsync3),
+ FUNCTION(mi2s_0),
+ FUNCTION(mi2s_1),
+ FUNCTION(mi2s_2),
+ FUNCTION(mss_lte),
+ FUNCTION(m_voc),
+ FUNCTION(pa_indicator),
+ FUNCTION(phase_flag),
+ FUNCTION(PLL_BIST),
+ FUNCTION(pll_bypassnl),
+ FUNCTION(pll_reset),
+ FUNCTION(prng_rosc),
+ FUNCTION(qdss),
+ FUNCTION(qdss_cti),
+ FUNCTION(qlink_enable),
+ FUNCTION(qlink_request),
+ FUNCTION(qspi_clk),
+ FUNCTION(qspi_cs),
+ FUNCTION(qspi_data),
+ FUNCTION(qup00),
+ FUNCTION(qup01),
+ FUNCTION(qup02),
+ FUNCTION(qup03),
+ FUNCTION(qup04),
+ FUNCTION(qup05),
+ FUNCTION(qup10),
+ FUNCTION(qup11),
+ FUNCTION(qup12),
+ FUNCTION(qup13),
+ FUNCTION(qup14),
+ FUNCTION(qup15),
+ FUNCTION(sdc1_tb),
+ FUNCTION(sdc2_tb),
+ FUNCTION(sd_write),
+ FUNCTION(sp_cmu),
+ FUNCTION(tgu_ch0),
+ FUNCTION(tgu_ch1),
+ FUNCTION(tgu_ch2),
+ FUNCTION(tgu_ch3),
+ FUNCTION(tsense_pwm1),
+ FUNCTION(tsense_pwm2),
+ FUNCTION(uim1),
+ FUNCTION(uim2),
+ FUNCTION(uim_batt),
+ FUNCTION(usb_phy),
+ FUNCTION(vfr_1),
+ FUNCTION(_V_GPIO),
+ FUNCTION(_V_PPS_IN),
+ FUNCTION(_V_PPS_OUT),
+ FUNCTION(vsense_trigger),
+ FUNCTION(wlan1_adc0),
+ FUNCTION(wlan1_adc1),
+ FUNCTION(wlan2_adc0),
+ FUNCTION(wlan2_adc1),
+};
+
+/* Every pin is maintained as a single group, and missing or non-existing pin
+ * would be maintained as dummy group to synchronize pin group index with
+ * pin descriptor registered with pinctrl core.
+ * Clients would not be able to request these dummy pin groups.
+ */
+static const struct msm_pingroup sc7180_groups[] = {
+ [0] = PINGROUP(0, SOUTH, qup01, cri_trng, _, phase_flag, _, _, _, _, _),
+ [1] = PINGROUP(1, SOUTH, qup01, cri_trng, _, phase_flag, _, _, _, _, _),
+ [2] = PINGROUP(2, SOUTH, qup01, cri_trng, _, phase_flag, _, _, _, _, _),
+ [3] = PINGROUP(3, SOUTH, qup01, sp_cmu, dbg_out, qdss_cti, _, _, _, _, _),
+ [4] = PINGROUP(4, NORTH, sdc1_tb, _, qdss_cti, _, _, _, _, _, _),
+ [5] = PINGROUP(5, NORTH, sdc2_tb, _, _, _, _, _, _, _, _),
+ [6] = PINGROUP(6, NORTH, qup11, qup11, _, _, _, _, _, _, _),
+ [7] = PINGROUP(7, NORTH, qup11, qup11, ddr_bist, _, _, _, _, _, _),
+ [8] = PINGROUP(8, NORTH, gp_pdm1, ddr_bist, _, phase_flag, qdss_cti, _, _, _, _),
+ [9] = PINGROUP(9, NORTH, ddr_bist, _, phase_flag, qdss_cti, _, _, _, _, _),
+ [10] = PINGROUP(10, NORTH, mdp_vsync, ddr_bist, _, _, _, _, _, _, _),
+ [11] = PINGROUP(11, NORTH, mdp_vsync, edp_lcd, _, phase_flag, ddr_pxi2, _, _, _, _),
+ [12] = PINGROUP(12, SOUTH, mdp_vsync, m_voc, qup01, _, phase_flag, wlan2_adc0, atest_usb10, ddr_pxi3, _),
+ [13] = PINGROUP(13, SOUTH, cam_mclk, pll_bypassnl, qdss, _, _, _, _, _, _),
+ [14] = PINGROUP(14, SOUTH, cam_mclk, pll_reset, qdss, _, _, _, _, _, _),
+ [15] = PINGROUP(15, SOUTH, cam_mclk, qup02, qup02, qdss, _, _, _, _, _),
+ [16] = PINGROUP(16, SOUTH, cam_mclk, qup02, qup02, qdss, _, _, _, _, _),
+ [17] = PINGROUP(17, SOUTH, cci_i2c, _, phase_flag, qdss, _, wlan1_adc0, atest_usb12, ddr_pxi1, atest_char),
+ [18] = PINGROUP(18, SOUTH, cci_i2c, agera_pll, _, phase_flag, qdss, vsense_trigger, ddr_pxi0, atest_char3, _),
+ [19] = PINGROUP(19, SOUTH, cci_i2c, _, phase_flag, qdss, atest_char2, _, _, _, _),
+ [20] = PINGROUP(20, SOUTH, cci_i2c, _, phase_flag, qdss, atest_char1, _, _, _, _),
+ [21] = PINGROUP(21, NORTH, cci_timer0, gcc_gp2, _, qdss, atest_char0, _, _, _, _),
+ [22] = PINGROUP(22, NORTH, cci_timer1, gcc_gp3, _, qdss, _, _, _, _, _),
+ [23] = PINGROUP(23, SOUTH, cci_timer2, cam_mclk, qdss, _, _, _, _, _, _),
+ [24] = PINGROUP(24, SOUTH, cci_timer3, cci_async, qdss, _, _, _, _, _, _),
+ [25] = PINGROUP(25, SOUTH, cci_timer4, cci_async, qup05, _, phase_flag, qdss, _, _, _),
+ [26] = PINGROUP(26, SOUTH, cci_async, qup05, _, phase_flag, qdss, atest_tsens, atest_usb11, ddr_pxi2, _),
+ [27] = PINGROUP(27, SOUTH, cci_i2c, qup05, PLL_BIST, _, phase_flag, qdss, ddr_pxi0, _, _),
+ [28] = PINGROUP(28, SOUTH, cci_i2c, qup05, _, phase_flag, qdss, _, _, _, _),
+ [29] = PINGROUP(29, NORTH, _, qdss, _, _, _, _, _, _, _),
+ [30] = PINGROUP(30, SOUTH, qdss, _, _, _, _, _, _, _, _),
+ [31] = PINGROUP(31, NORTH, _, qdss, _, _, _, _, _, _, _),
+ [32] = PINGROUP(32, NORTH, _, phase_flag, _, _, _, _, _, _, _),
+ [33] = PINGROUP(33, NORTH, sd_write, _, phase_flag, qdss_cti, _, _, _, _, _),
+ [34] = PINGROUP(34, SOUTH, qup00, _, phase_flag, qdss, _, _, _, _, _),
+ [35] = PINGROUP(35, SOUTH, qup00, _, phase_flag, qdss, _, _, _, _, _),
+ [36] = PINGROUP(36, SOUTH, qup00, _, phase_flag, qdss, _, _, _, _, _),
+ [37] = PINGROUP(37, SOUTH, qup00, gp_pdm0, _, phase_flag, qdss, _, _, _, _),
+ [38] = PINGROUP(38, SOUTH, qup03, _, phase_flag, _, _, _, _, _, _),
+ [39] = PINGROUP(39, SOUTH, qup03, _, phase_flag, atest_tsens2, wlan2_adc1, atest_usb1, _, _, _),
+ [40] = PINGROUP(40, SOUTH, qup03, _, _, _, _, _, _, _, _),
+ [41] = PINGROUP(41, SOUTH, qup03, _, _, _, _, _, _, _, _),
+ [42] = PINGROUP(42, NORTH, qup12, _, phase_flag, _, _, _, _, _, _),
+ [43] = PINGROUP(43, NORTH, qup12, _, _, _, _, _, _, _, _),
+ [44] = PINGROUP(44, NORTH, qup12, _, phase_flag, qdss_cti, wlan1_adc1, atest_usb13, ddr_pxi1, _, _),
+ [45] = PINGROUP(45, NORTH, qup12, qdss_cti, _, _, _, _, _, _, _),
+ [46] = PINGROUP(46, NORTH, qup13, qup13, _, _, _, _, _, _, _),
+ [47] = PINGROUP(47, NORTH, qup13, qup13, _, _, _, _, _, _, _),
+ [48] = PINGROUP(48, NORTH, gcc_gp1, _, _, _, _, _, _, _, _),
+ [49] = PINGROUP(49, WEST, mi2s_1, btfm_slimbus, _, _, _, _, _, _, _),
+ [50] = PINGROUP(50, WEST, mi2s_1, btfm_slimbus, gp_pdm1, _, _, _, _, _, _),
+ [51] = PINGROUP(51, WEST, mi2s_1, btfm_slimbus, atest_usb2, _, _, _, _, _, _),
+ [52] = PINGROUP(52, WEST, mi2s_1, btfm_slimbus, atest_usb23, _, _, _, _, _, _),
+ [53] = PINGROUP(53, WEST, mi2s_0, qup15, qdss, atest_usb22, _, _, _, _, _),
+ [54] = PINGROUP(54, WEST, mi2s_0, qup15, qdss, atest_usb21, _, _, _, _, _),
+ [55] = PINGROUP(55, WEST, mi2s_0, qup15, qdss, atest_usb20, _, _, _, _, _),
+ [56] = PINGROUP(56, WEST, mi2s_0, qup15, gcc_gp1, _, phase_flag, qdss, _, _, _),
+ [57] = PINGROUP(57, WEST, lpass_ext, audio_ref, jitter_bist, gp_pdm2, _, phase_flag, qdss, _, _),
+ [58] = PINGROUP(58, WEST, lpass_ext, _, phase_flag, _, _, _, _, _, _),
+ [59] = PINGROUP(59, NORTH, qup10, _, _, _, _, _, _, _, _),
+ [60] = PINGROUP(60, NORTH, qup10, _, _, _, _, _, _, _, _),
+ [61] = PINGROUP(61, NORTH, qup10, _, _, _, _, _, _, _, _),
+ [62] = PINGROUP(62, NORTH, qup10, tgu_ch3, _, _, _, _, _, _, _),
+ [63] = PINGROUP(63, NORTH, qspi_clk, mdp_vsync0, mi2s_2, mdp_vsync1, mdp_vsync2, mdp_vsync3, tgu_ch0, _, phase_flag),
+ [64] = PINGROUP(64, NORTH, qspi_data, mi2s_2, tgu_ch1, _, phase_flag, _, _, _, _),
+ [65] = PINGROUP(65, NORTH, qspi_data, mi2s_2, vfr_1, tgu_ch2, _, _, _, _, _),
+ [66] = PINGROUP(66, NORTH, qspi_data, mi2s_2, _, _, _, _, _, _, _),
+ [67] = PINGROUP(67, NORTH, qspi_data, _, _, _, _, _, _, _, _),
+ [68] = PINGROUP(68, NORTH, qspi_cs, qup10, gp_pdm0, _, _, _, _, _, _),
+ [69] = PINGROUP(69, WEST, _, _, _, _, _, _, _, _, _),
+ [70] = PINGROUP(70, NORTH, _, _, mdp_vsync, ldo_en, _, _, _, _, _),
+ [71] = PINGROUP(71, NORTH, _, mdp_vsync, ldo_update, _, _, _, _, _, _),
+ [72] = PINGROUP(72, NORTH, qspi_cs, qup10, prng_rosc, _, qdss_cti, _, _, _, _),
+ [73] = PINGROUP(73, WEST, _, _, _, _, _, _, _, _, _),
+ [74] = PINGROUP(74, WEST, _, _, _, _, _, _, _, _, _),
+ [75] = PINGROUP(75, WEST, uim2, _, _, _, _, _, _, _, _),
+ [76] = PINGROUP(76, WEST, uim2, _, _, _, _, _, _, _, _),
+ [77] = PINGROUP(77, WEST, uim2, _, _, _, _, _, _, _, _),
+ [78] = PINGROUP(78, WEST, uim2, _, _, _, _, _, _, _, _),
+ [79] = PINGROUP(79, WEST, uim1, _, _, _, _, _, _, _, _),
+ [80] = PINGROUP(80, WEST, uim1, _, _, _, _, _, _, _, _),
+ [81] = PINGROUP(81, WEST, uim1, _, _, _, _, _, _, _, _),
+ [82] = PINGROUP(82, WEST, uim1, _, _, _, _, _, _, _, _),
+ [83] = PINGROUP(83, WEST, _, _V_GPIO, _V_PPS_IN, _V_PPS_OUT, gps_tx, _, _, _, _),
+ [84] = PINGROUP(84, WEST, _, _V_GPIO, _V_PPS_IN, _V_PPS_OUT, gps_tx, _, _, _, _),
+ [85] = PINGROUP(85, WEST, uim_batt, dp_hot, aoss_cti, _, _, _, _, _, _),
+ [86] = PINGROUP(86, NORTH, qup14, qdss, _, _, _, _, _, _, _),
+ [87] = PINGROUP(87, NORTH, qup14, adsp_ext, qdss, _, _, _, _, _, _),
+ [88] = PINGROUP(88, NORTH, qup14, qdss, tsense_pwm1, tsense_pwm2, _, _, _, _, _),
+ [89] = PINGROUP(89, NORTH, qup14, qdss, _, _, _, _, _, _, _),
+ [90] = PINGROUP(90, NORTH, qup14, qdss, _, _, _, _, _, _, _),
+ [91] = PINGROUP(91, NORTH, qup14, qdss, _, _, _, _, _, _, _),
+ [92] = PINGROUP(92, NORTH, _, _, _, _, _, _, _, _, _),
+ [93] = PINGROUP(93, NORTH, qdss, _, _, _, _, _, _, _, _),
+ [94] = PINGROUP(94, SOUTH, qup01, _, _, _, _, _, _, _, _),
+ [95] = PINGROUP(95, WEST, _, _, _, _, _, _, _, _, _),
+ [96] = PINGROUP(96, WEST, qlink_request, _, _, _, _, _, _, _, _),
+ [97] = PINGROUP(97, WEST, qlink_enable, _, _, _, _, _, _, _, _),
+ [98] = PINGROUP(98, WEST, _, _, _, _, _, _, _, _, _),
+ [99] = PINGROUP(99, WEST, _, pa_indicator, _, _, _, _, _, _, _),
+ [100] = PINGROUP(100, WEST, _, _, _, _, _, _, _, _, _),
+ [101] = PINGROUP(101, NORTH, _, _, _, _, _, _, _, _, _),
+ [102] = PINGROUP(102, NORTH, _, _, _, _, _, _, _, _, _),
+ [103] = PINGROUP(103, NORTH, _, _, _, _, _, _, _, _, _),
+ [104] = PINGROUP(104, WEST, usb_phy, _, qdss, _, _, _, _, _, _),
+ [105] = PINGROUP(105, NORTH, _, _, _, _, _, _, _, _, _),
+ [106] = PINGROUP(106, NORTH, _, _, _, _, _, _, _, _, _),
+ [107] = PINGROUP(107, WEST, _, _V_GPIO, _V_PPS_IN, _V_PPS_OUT, gps_tx, _, _, _, _),
+ [108] = PINGROUP(108, SOUTH, mss_lte, _, phase_flag, ddr_pxi3, _, _, _, _, _),
+ [109] = PINGROUP(109, SOUTH, mss_lte, gps_tx, _, phase_flag, _, _, _, _, _),
+ [110] = PINGROUP(110, NORTH, _, _, _, _, _, _, _, _, _),
+ [111] = PINGROUP(111, NORTH, _, _, _, _, _, _, _, _, _),
+ [112] = PINGROUP(112, NORTH, _, _, _, _, _, _, _, _, _),
+ [113] = PINGROUP(113, NORTH, _, _, _, _, _, _, _, _, _),
+ [114] = PINGROUP(114, NORTH, _, _, _, _, _, _, _, _, _),
+ [115] = PINGROUP(115, WEST, qup04, qup04, _, _, _, _, _, _, _),
+ [116] = PINGROUP(116, WEST, qup04, qup04, _, _, _, _, _, _, _),
+ [117] = PINGROUP(117, WEST, dp_hot, _, _, _, _, _, _, _, _),
+ [118] = PINGROUP(118, WEST, _, _, _, _, _, _, _, _, _),
+ [119] = UFS_RESET(ufs_reset, 0x97f000),
+ [120] = SDC_QDSD_PINGROUP(sdc1_rclk, 0x97a000, 15, 0),
+ [121] = SDC_QDSD_PINGROUP(sdc1_clk, 0x97a000, 13, 6),
+ [122] = SDC_QDSD_PINGROUP(sdc1_cmd, 0x97a000, 11, 3),
+ [123] = SDC_QDSD_PINGROUP(sdc1_data, 0x97a000, 9, 0),
+ [124] = SDC_QDSD_PINGROUP(sdc2_clk, 0x97b000, 14, 6),
+ [125] = SDC_QDSD_PINGROUP(sdc2_cmd, 0x97b000, 11, 3),
+ [126] = SDC_QDSD_PINGROUP(sdc2_data, 0x97b000, 9, 0),
+};
+
+static const struct msm_pinctrl_soc_data sc7180_pinctrl = {
+ .pins = sc7180_pins,
+ .npins = ARRAY_SIZE(sc7180_pins),
+ .functions = sc7180_functions,
+ .nfunctions = ARRAY_SIZE(sc7180_functions),
+ .groups = sc7180_groups,
+ .ngroups = ARRAY_SIZE(sc7180_groups),
+ .ngpios = 120,
+ .tiles = sc7180_tiles,
+ .ntiles = ARRAY_SIZE(sc7180_tiles),
+};
+
+static int sc7180_pinctrl_probe(struct platform_device *pdev)
+{
+ return msm_pinctrl_probe(pdev, &sc7180_pinctrl);
+}
+
+static const struct of_device_id sc7180_pinctrl_of_match[] = {
+ { .compatible = "qcom,sc7180-pinctrl", },
+ { },
+};
+
+static struct platform_driver sc7180_pinctrl_driver = {
+ .driver = {
+ .name = "sc7180-pinctrl",
+ .pm = &msm_pinctrl_dev_pm_ops,
+ .of_match_table = sc7180_pinctrl_of_match,
+ },
+ .probe = sc7180_pinctrl_probe,
+ .remove = msm_pinctrl_remove,
+};
+
+static int __init sc7180_pinctrl_init(void)
+{
+ return platform_driver_register(&sc7180_pinctrl_driver);
+}
+arch_initcall(sc7180_pinctrl_init);
+
+static void __exit sc7180_pinctrl_exit(void)
+{
+ platform_driver_unregister(&sc7180_pinctrl_driver);
+}
+module_exit(sc7180_pinctrl_exit);
+
+MODULE_DESCRIPTION("QTI sc7180 pinctrl driver");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(of, sc7180_pinctrl_of_match);
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply related
* Re: [PATCH 1/2] dt-bindings: pinctrl: qcom: Add SC7180 pinctrl binding
From: Rajendra Nayak @ 2019-08-06 6:09 UTC (permalink / raw)
To: Linus Walleij
Cc: Bjorn Andersson, MSM, Andy Gross, Rob Herring,
open list:GPIO SUBSYSTEM,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
linux-kernel@vger.kernel.org, Jitendra Sharma, Vivek Gautam
In-Reply-To: <CACRpkdaoOuyUmysb3OmErbLJ6zZuHGGt7RRzG9wULDkg=hLCAw@mail.gmail.com>
On 8/5/2019 5:05 PM, Linus Walleij wrote:
> On Mon, Aug 5, 2019 at 1:34 PM Linus Walleij <linus.walleij@linaro.org> wrote:
>> On Thu, Aug 1, 2019 at 12:07 PM Rajendra Nayak <rnayak@codeaurora.org> wrote:
>>
>>> From: Jitendra Sharma <shajit@codeaurora.org>
>>>
>>> Add the binding for the TLMM pinctrl block found in the SC7180 platform
>>>
>>> Signed-off-by: Jitendra Sharma <shajit@codeaurora.org>
>>> Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
>>> [rnayak: Fix some copy-paste issues, sort and fix functions]
>>> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
>>
>> Patch applied with Bjorn's ACK.
>
> Ooops there is v2 and even v3 coming, OK I wait for v3 and
> backed this out.
Hi Linus, I just posted the v3 out with all the ACKs added.
They should be good to pick up now.
thanks,
Rajendra
>
> Yours,
> Linus Walleij
>
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
^ permalink raw reply
* [gpio:gpio-descriptors-spi 5/5] drivers/spi/spi-pl022.c:1852:4: error: implicit declaration of function 'of_property_read_u32'; did you mean '__percpu_read_32'?
From: kbuild test robot @ 2019-08-06 6:24 UTC (permalink / raw)
To: Linus Walleij; +Cc: kbuild-all, linux-gpio
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=unknown-8bit, Size: 80576 bytes --]
tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/linusw/linux-gpio.git gpio-descriptors-spi
head: 6e5614b6476001adb8ce6e2859bc2ca0a4339398
commit: 6e5614b6476001adb8ce6e2859bc2ca0a4339398 [5/5] slask
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.4.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 6e5614b6476001adb8ce6e2859bc2ca0a4339398
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=arm64
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from include/linux/bitops.h:5:0,
from include/linux/kernel.h:12,
from include/linux/list.h:9,
from include/linux/module.h:9,
from drivers/spi/spi-pl022.c:17:
drivers/spi/spi-pl022.c: In function 'pl022_set_cs':
drivers/spi/spi-pl022.c:442:22: error: 'struct pl022' has no member named 'cur_cs'; did you mean 'cur_msg'?
tmp &= ~BIT(pl022->cur_cs);
^
include/linux/bits.h:8:30: note: in definition of macro 'BIT'
#define BIT(nr) (UL(1) << (nr))
^~
drivers/spi/spi-pl022.c:444:21: error: 'struct pl022' has no member named 'cur_cs'; did you mean 'cur_msg'?
tmp |= BIT(pl022->cur_cs);
^
include/linux/bits.h:8:30: note: in definition of macro 'BIT'
#define BIT(nr) (UL(1) << (nr))
^~
drivers/spi/spi-pl022.c: In function 'giveback':
drivers/spi/spi-pl022.c:493:4: error: implicit declaration of function 'pl022_cs_control'; did you mean 'pl022_set_cs'? [-Werror=implicit-function-declaration]
pl022_cs_control(pl022, SSP_CHIP_DESELECT);
^~~~~~~~~~~~~~~~
pl022_set_cs
drivers/spi/spi-pl022.c: In function 'pl022_transfer_one_message':
drivers/spi/spi-pl022.c:1571:9: error: 'struct pl022' has no member named 'cur_cs'; did you mean 'cur_msg'?
pl022->cur_cs = pl022->chipselects[msg->spi->chip_select];
^~~~~~
cur_msg
drivers/spi/spi-pl022.c:1571:23: error: 'struct pl022' has no member named 'chipselects'
pl022->cur_cs = pl022->chipselects[msg->spi->chip_select];
^~
drivers/spi/spi-pl022.c: In function 'pl022_setup':
>> drivers/spi/spi-pl022.c:1852:4: error: implicit declaration of function 'of_property_read_u32'; did you mean '__percpu_read_32'? [-Werror=implicit-function-declaration]
of_property_read_u32(np, "pl022,interface",
^~~~~~~~~~~~~~~~~~~~
__percpu_read_32
drivers/spi/spi-pl022.c:1914:7: error: implicit declaration of function 'gpio_is_valid'; did you mean 'uuid_is_valid'? [-Werror=implicit-function-declaration]
if (!gpio_is_valid(pl022->chipselects[spi->chip_select]))
^~~~~~~~~~~~~
uuid_is_valid
drivers/spi/spi-pl022.c:1914:26: error: 'struct pl022' has no member named 'chipselects'
if (!gpio_is_valid(pl022->chipselects[spi->chip_select]))
^~
drivers/spi/spi-pl022.c: In function 'pl022_platform_data_dt_get':
drivers/spi/spi-pl022.c:2081:11: error: implicit declaration of function 'of_property_read_bool' [-Werror=implicit-function-declaration]
pd->rt = of_property_read_bool(np, "pl022,rt");
^~~~~~~~~~~~~~~~~~~~~
drivers/spi/spi-pl022.c: In function 'pl022_probe':
drivers/spi/spi-pl022.c:2125:7: error: 'struct pl022' has no member named 'chipselects'
pl022->chipselects = devm_kcalloc(dev, num_cs, sizeof(int),
^~
drivers/spi/spi-pl022.c:2127:12: error: 'struct pl022' has no member named 'chipselects'
if (!pl022->chipselects) {
^~
drivers/spi/spi-pl022.c:2137:8: warning: statement with no effect [-Wunused-value]
master->use_gpio_descriptors;
~~~~~~^~~~~~~~~~~~~~~~~~~~~~
drivers/spi/spi-pl022.c:2150:9: error: 'struct pl022' has no member named 'chipselects'
pl022->chipselects[i] = i;
^~
drivers/spi/spi-pl022.c:2153:18: error: implicit declaration of function 'of_get_named_gpio'; did you mean 'fwnode_get_named_gpiod'? [-Werror=implicit-function-declaration]
int cs_gpio = of_get_named_gpio(np, "cs-gpios", i);
^~~~~~~~~~~~~~~~~
fwnode_get_named_gpiod
drivers/spi/spi-pl022.c:2160:9: error: 'struct pl022' has no member named 'chipselects'
pl022->chipselects[i] = cs_gpio;
^~
drivers/spi/spi-pl022.c:2163:9: error: implicit declaration of function 'devm_gpio_request'; did you mean 'devm_gpiod_put'? [-Werror=implicit-function-declaration]
if (devm_gpio_request(dev, cs_gpio, "ssp-pl022"))
^~~~~~~~~~~~~~~~~
devm_gpiod_put
drivers/spi/spi-pl022.c:2167:14: error: implicit declaration of function 'gpio_direction_output'; did you mean 'gpiod_direction_output'? [-Werror=implicit-function-declaration]
else if (gpio_direction_output(cs_gpio, 1))
^~~~~~~~~~~~~~~~~~~~~
gpiod_direction_output
cc1: some warnings being treated as errors
vim +1852 drivers/spi/spi-pl022.c
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1805
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1806 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1807 * pl022_setup - setup function registered to SPI master framework
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1808 * @spi: spi device which is requesting setup
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1809 *
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1810 * This function is registered to the SPI framework for this SPI master
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1811 * controller. If it is the first time when setup is called by this device,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1812 * this function will initialize the runtime state for this chip and save
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1813 * the same in the device structure. Else it will update the runtime info
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1814 * with the updated chip info. Nothing is really being written to the
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1815 * controller hardware here, that is not done until the actual transfer
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1816 * commence.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1817 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1818 static int pl022_setup(struct spi_device *spi)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1819 {
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1820 struct pl022_config_chip const *chip_info;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1821 struct pl022_config_chip chip_info_dt;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1822 struct chip_data *chip;
c4a4784308f5cb8 drivers/spi/spi-pl022.c Jonas Aaberg 2011-02-28 1823 struct ssp_clock_params clk_freq = { .cpsdvsr = 0, .scr = 0};
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1824 int status = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1825 struct pl022 *pl022 = spi_master_get_devdata(spi->master);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1826 unsigned int bits = spi->bits_per_word;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1827 u32 tmp;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1828 struct device_node *np = spi->dev.of_node;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1829
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1830 if (!spi->max_speed_hz)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1831 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1832
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1833 /* Get controller_state if one is supplied */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1834 chip = spi_get_ctldata(spi);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1835
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1836 if (chip == NULL) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1837 chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL);
77538f4a98dc542 drivers/spi/spi-pl022.c Jingoo Han 2014-04-29 1838 if (!chip)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1839 return -ENOMEM;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1840 dev_dbg(&spi->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1841 "allocated memory for controller's runtime state\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1842 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1843
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1844 /* Get controller data if one is supplied */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1845 chip_info = spi->controller_data;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1846
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1847 if (chip_info == NULL) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1848 if (np) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1849 chip_info_dt = pl022_default_chip_info;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1850
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1851 chip_info_dt.hierarchy = SSP_MASTER;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 @1852 of_property_read_u32(np, "pl022,interface",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1853 &chip_info_dt.iface);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1854 of_property_read_u32(np, "pl022,com-mode",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1855 &chip_info_dt.com_mode);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1856 of_property_read_u32(np, "pl022,rx-level-trig",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1857 &chip_info_dt.rx_lev_trig);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1858 of_property_read_u32(np, "pl022,tx-level-trig",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1859 &chip_info_dt.tx_lev_trig);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1860 of_property_read_u32(np, "pl022,ctrl-len",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1861 &chip_info_dt.ctrl_len);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1862 of_property_read_u32(np, "pl022,wait-state",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1863 &chip_info_dt.wait_state);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1864 of_property_read_u32(np, "pl022,duplex",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1865 &chip_info_dt.duplex);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1866
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1867 chip_info = &chip_info_dt;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1868 } else {
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1869 chip_info = &pl022_default_chip_info;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1870 /* spi_board_info.controller_data not is supplied */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1871 dev_dbg(&spi->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1872 "using default controller_data settings\n");
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1873 }
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1874 } else
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1875 dev_dbg(&spi->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1876 "using user supplied controller_data settings\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1877
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1878 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1879 * We can override with custom divisors, else we use the board
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1880 * frequency setting
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1881 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1882 if ((0 == chip_info->clk_freq.cpsdvsr)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1883 && (0 == chip_info->clk_freq.scr)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1884 status = calculate_effective_freq(pl022,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1885 spi->max_speed_hz,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1886 &clk_freq);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1887 if (status < 0)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1888 goto err_config_params;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1889 } else {
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1890 memcpy(&clk_freq, &chip_info->clk_freq, sizeof(clk_freq));
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1891 if ((clk_freq.cpsdvsr % 2) != 0)
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1892 clk_freq.cpsdvsr =
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1893 clk_freq.cpsdvsr - 1;
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1894 }
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1895 if ((clk_freq.cpsdvsr < CPSDVR_MIN)
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1896 || (clk_freq.cpsdvsr > CPSDVR_MAX)) {
e3f88ae99609205 drivers/spi/amba-pl022.c Virupax Sadashivpetimath 2011-06-13 1897 status = -EINVAL;
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1898 dev_err(&spi->dev,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1899 "cpsdvsr is configured incorrectly\n");
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1900 goto err_config_params;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1901 }
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1902
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1903 status = verify_controller_parameters(pl022, chip_info);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1904 if (status) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1905 dev_err(&spi->dev, "controller data is incorrect");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1906 goto err_config_params;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1907 }
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1908
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1909 pl022->rx_lev_trig = chip_info->rx_lev_trig;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1910 pl022->tx_lev_trig = chip_info->tx_lev_trig;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1911
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1912 /* Now set controller state based on controller data */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1913 chip->xfer_type = chip_info->com_mode;
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1914 if (!gpio_is_valid(pl022->chipselects[spi->chip_select]))
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1915 dev_warn(&spi->dev,
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1916 "invalid chip select\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1917
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1918 /* Check bits per word with vendor specific range */
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1919 if ((bits <= 3) || (bits > pl022->vendor->max_bpw)) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1920 status = -ENOTSUPP;
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1921 dev_err(&spi->dev, "illegal data size for this controller!\n");
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1922 dev_err(&spi->dev, "This controller can only handle 4 <= n <= %d bit words\n",
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1923 pl022->vendor->max_bpw);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1924 goto err_config_params;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1925 } else if (bits <= 8) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1926 dev_dbg(&spi->dev, "4 <= n <=8 bits per word\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1927 chip->n_bytes = 1;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1928 chip->read = READING_U8;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1929 chip->write = WRITING_U8;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1930 } else if (bits <= 16) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1931 dev_dbg(&spi->dev, "9 <= n <= 16 bits per word\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1932 chip->n_bytes = 2;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1933 chip->read = READING_U16;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1934 chip->write = WRITING_U16;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1935 } else {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1936 dev_dbg(&spi->dev, "17 <= n <= 32 bits per word\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1937 chip->n_bytes = 4;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1938 chip->read = READING_U32;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1939 chip->write = WRITING_U32;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1940 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1941
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1942 /* Now Initialize all register settings required for this chip */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1943 chip->cr0 = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1944 chip->cr1 = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1945 chip->dmacr = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1946 chip->cpsr = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1947 if ((chip_info->com_mode == DMA_TRANSFER)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1948 && ((pl022->master_info)->enable_dma)) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1949 chip->enable_dma = true;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1950 dev_dbg(&spi->dev, "DMA mode set in controller state\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1951 SSP_WRITE_BITS(chip->dmacr, SSP_DMA_ENABLED,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1952 SSP_DMACR_MASK_RXDMAE, 0);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1953 SSP_WRITE_BITS(chip->dmacr, SSP_DMA_ENABLED,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1954 SSP_DMACR_MASK_TXDMAE, 1);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1955 } else {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1956 chip->enable_dma = false;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1957 dev_dbg(&spi->dev, "DMA mode NOT set in controller state\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1958 SSP_WRITE_BITS(chip->dmacr, SSP_DMA_DISABLED,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1959 SSP_DMACR_MASK_RXDMAE, 0);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1960 SSP_WRITE_BITS(chip->dmacr, SSP_DMA_DISABLED,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1961 SSP_DMACR_MASK_TXDMAE, 1);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1962 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1963
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1964 chip->cpsr = clk_freq.cpsdvsr;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1965
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1966 /* Special setup for the ST micro extended control registers */
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1967 if (pl022->vendor->extended_cr) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1968 u32 etx;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1969
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1970 if (pl022->vendor->pl023) {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1971 /* These bits are only in the PL023 */
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1972 SSP_WRITE_BITS(chip->cr1, chip_info->clkdelay,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1973 SSP_CR1_MASK_FBCLKDEL_ST, 13);
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1974 } else {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1975 /* These bits are in the PL022 but not PL023 */
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1976 SSP_WRITE_BITS(chip->cr0, chip_info->duplex,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1977 SSP_CR0_MASK_HALFDUP_ST, 5);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1978 SSP_WRITE_BITS(chip->cr0, chip_info->ctrl_len,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1979 SSP_CR0_MASK_CSS_ST, 16);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1980 SSP_WRITE_BITS(chip->cr0, chip_info->iface,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1981 SSP_CR0_MASK_FRF_ST, 21);
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1982 SSP_WRITE_BITS(chip->cr1, chip_info->wait_state,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1983 SSP_CR1_MASK_MWAIT_ST, 6);
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1984 }
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1985 SSP_WRITE_BITS(chip->cr0, bits - 1,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1986 SSP_CR0_MASK_DSS_ST, 0);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1987
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1988 if (spi->mode & SPI_LSB_FIRST) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1989 tmp = SSP_RX_LSB;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1990 etx = SSP_TX_LSB;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1991 } else {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1992 tmp = SSP_RX_MSB;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1993 etx = SSP_TX_MSB;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1994 }
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1995 SSP_WRITE_BITS(chip->cr1, tmp, SSP_CR1_MASK_RENDN_ST, 4);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1996 SSP_WRITE_BITS(chip->cr1, etx, SSP_CR1_MASK_TENDN_ST, 5);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1997 SSP_WRITE_BITS(chip->cr1, chip_info->rx_lev_trig,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1998 SSP_CR1_MASK_RXIFLSEL_ST, 7);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1999 SSP_WRITE_BITS(chip->cr1, chip_info->tx_lev_trig,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2000 SSP_CR1_MASK_TXIFLSEL_ST, 10);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2001 } else {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2002 SSP_WRITE_BITS(chip->cr0, bits - 1,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2003 SSP_CR0_MASK_DSS, 0);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2004 SSP_WRITE_BITS(chip->cr0, chip_info->iface,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2005 SSP_CR0_MASK_FRF, 4);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2006 }
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2007
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2008 /* Stuff that is common for all versions */
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2009 if (spi->mode & SPI_CPOL)
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2010 tmp = SSP_CLK_POL_IDLE_HIGH;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2011 else
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2012 tmp = SSP_CLK_POL_IDLE_LOW;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2013 SSP_WRITE_BITS(chip->cr0, tmp, SSP_CR0_MASK_SPO, 6);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2014
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2015 if (spi->mode & SPI_CPHA)
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2016 tmp = SSP_CLK_SECOND_EDGE;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2017 else
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2018 tmp = SSP_CLK_FIRST_EDGE;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2019 SSP_WRITE_BITS(chip->cr0, tmp, SSP_CR0_MASK_SPH, 7);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2020
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 2021 SSP_WRITE_BITS(chip->cr0, clk_freq.scr, SSP_CR0_MASK_SCR, 8);
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2022 /* Loopback is available on all versions except PL023 */
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2023 if (pl022->vendor->loopback) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2024 if (spi->mode & SPI_LOOP)
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2025 tmp = LOOPBACK_ENABLED;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2026 else
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2027 tmp = LOOPBACK_DISABLED;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2028 SSP_WRITE_BITS(chip->cr1, tmp, SSP_CR1_MASK_LBM, 0);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2029 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2030 SSP_WRITE_BITS(chip->cr1, SSP_DISABLED, SSP_CR1_MASK_SSE, 1);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2031 SSP_WRITE_BITS(chip->cr1, chip_info->hierarchy, SSP_CR1_MASK_MS, 2);
f1e45f86ed93b9e drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2032 SSP_WRITE_BITS(chip->cr1, chip_info->slave_tx_disable, SSP_CR1_MASK_SOD,
f1e45f86ed93b9e drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2033 3);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2034
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2035 /* Save controller_state */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2036 spi_set_ctldata(spi, chip);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2037 return status;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2038 err_config_params:
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2039 spi_set_ctldata(spi, NULL);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2040 kfree(chip);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2041 return status;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2042 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2043
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2044 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2045 * pl022_cleanup - cleanup function registered to SPI master framework
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2046 * @spi: spi device which is requesting cleanup
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2047 *
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2048 * This function is registered to the SPI framework for this SPI master
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2049 * controller. It will free the runtime state of chip.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2050 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2051 static void pl022_cleanup(struct spi_device *spi)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2052 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2053 struct chip_data *chip = spi_get_ctldata(spi);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2054
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2055 spi_set_ctldata(spi, NULL);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2056 kfree(chip);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2057 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2058
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2059 static struct pl022_ssp_controller *
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2060 pl022_platform_data_dt_get(struct device *dev)
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2061 {
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2062 struct device_node *np = dev->of_node;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2063 struct pl022_ssp_controller *pd;
849794c50b24b93 drivers/spi/spi-pl022.c Rabin Vincent 2017-04-06 2064 u32 tmp = 0;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2065
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2066 if (!np) {
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2067 dev_err(dev, "no dt node defined\n");
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2068 return NULL;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2069 }
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2070
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2071 pd = devm_kzalloc(dev, sizeof(struct pl022_ssp_controller), GFP_KERNEL);
77538f4a98dc542 drivers/spi/spi-pl022.c Jingoo Han 2014-04-29 2072 if (!pd)
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2073 return NULL;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2074
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2075 pd->bus_id = -1;
dbd897b9c6fac8b drivers/spi/spi-pl022.c Linus Walleij 2013-05-23 2076 pd->enable_dma = 1;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2077 of_property_read_u32(np, "num-cs", &tmp);
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2078 pd->num_chipselect = tmp;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2079 of_property_read_u32(np, "pl022,autosuspend-delay",
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2080 &pd->autosuspend_delay);
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2081 pd->rt = of_property_read_bool(np, "pl022,rt");
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2082
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2083 return pd;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2084 }
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2085
fd4a319bc933ae9 drivers/spi/spi-pl022.c Grant Likely 2012-12-07 2086 static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2087 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2088 struct device *dev = &adev->dev;
8074cf063e410a2 drivers/spi/spi-pl022.c Jingoo Han 2013-07-30 2089 struct pl022_ssp_controller *platform_info =
8074cf063e410a2 drivers/spi/spi-pl022.c Jingoo Han 2013-07-30 2090 dev_get_platdata(&adev->dev);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2091 struct spi_master *master;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2092 struct pl022 *pl022 = NULL; /*Data for this driver */
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2093 struct device_node *np = adev->dev.of_node;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2094 int status = 0, i, num_cs;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2095
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2096 dev_info(&adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2097 "ARM PL022 driver, device ID: 0x%08x\n", adev->periphid);
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2098 if (!platform_info && IS_ENABLED(CONFIG_OF))
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2099 platform_info = pl022_platform_data_dt_get(dev);
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2100
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2101 if (!platform_info) {
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2102 dev_err(dev, "probe: no platform data defined\n");
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2103 return -ENODEV;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2104 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2105
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2106 if (platform_info->num_chipselect) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2107 num_cs = platform_info->num_chipselect;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2108 } else {
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2109 dev_err(dev, "probe: no chip select defined\n");
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2110 return -ENODEV;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2111 }
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2112
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2113 /* Allocate master with space for data */
b4b8482690d97ea drivers/spi/spi-pl022.c Roland Stigge 2012-09-03 2114 master = spi_alloc_master(dev, sizeof(struct pl022));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2115 if (master == NULL) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2116 dev_err(&adev->dev, "probe - cannot alloc SPI master\n");
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2117 return -ENOMEM;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2118 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2119
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2120 pl022 = spi_master_get_devdata(master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2121 pl022->master = master;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2122 pl022->master_info = platform_info;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2123 pl022->adev = adev;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2124 pl022->vendor = id->data;
a86854d0c599b32 drivers/spi/spi-pl022.c Kees Cook 2018-06-12 2125 pl022->chipselects = devm_kcalloc(dev, num_cs, sizeof(int),
b4b8482690d97ea drivers/spi/spi-pl022.c Roland Stigge 2012-09-03 2126 GFP_KERNEL);
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2127 if (!pl022->chipselects) {
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2128 status = -ENOMEM;
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2129 goto err_no_mem;
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2130 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2131
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2132 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2133 * Bus Number Which has been Assigned to this SSP controller
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2134 * on this board
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2135 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2136 master->bus_num = platform_info->bus_id;
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 2137 master->use_gpio_descriptors;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2138 master->num_chipselect = num_cs;
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 2139 master->set_cs = pl022_set_cs;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2140 master->cleanup = pl022_cleanup;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2141 master->setup = pl022_setup;
29b6e906a70a47c drivers/spi/spi-pl022.c Mark Brown 2013-07-28 2142 master->auto_runtime_pm = true;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2143 master->transfer_one_message = pl022_transfer_one_message;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2144 master->unprepare_transfer_hardware = pl022_unprepare_transfer_hardware;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2145 master->rt = platform_info->rt;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2146 master->dev.of_node = dev->of_node;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2147
516843702bb5fd8 drivers/spi/spi-pl022.c Linus Walleij 2019-04-28 2148 if (pl022->vendor->internal_cs_ctrl) {
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2149 for (i = 0; i < num_cs; i++)
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2150 pl022->chipselects[i] = i;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2151 } else if (IS_ENABLED(CONFIG_OF)) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2152 for (i = 0; i < num_cs; i++) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2153 int cs_gpio = of_get_named_gpio(np, "cs-gpios", i);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2154
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2155 if (cs_gpio == -EPROBE_DEFER) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2156 status = -EPROBE_DEFER;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2157 goto err_no_gpio;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2158 }
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2159
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2160 pl022->chipselects[i] = cs_gpio;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2161
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2162 if (gpio_is_valid(cs_gpio)) {
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2163 if (devm_gpio_request(dev, cs_gpio, "ssp-pl022"))
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2164 dev_err(&adev->dev,
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2165 "could not request %d gpio\n",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2166 cs_gpio);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2167 else if (gpio_direction_output(cs_gpio, 1))
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2168 dev_err(&adev->dev,
61e89e65e31516c drivers/spi/spi-pl022.c Roland Stigge 2014-09-09 2169 "could not set gpio %d as output\n",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2170 cs_gpio);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2171 }
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2172 }
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2173 }
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2174
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2175 /*
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2176 * Supports mode 0-3, loopback, and active low CS. Transfers are
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2177 * always MS bit first on the original pl022.
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2178 */
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2179 master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2180 if (pl022->vendor->extended_cr)
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2181 master->mode_bits |= SPI_LSB_FIRST;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2182
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2183 dev_dbg(&adev->dev, "BUSNO: %d\n", master->bus_num);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2184
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2185 status = amba_request_regions(adev, NULL);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2186 if (status)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2187 goto err_no_ioregion;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2188
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2189 pl022->phybase = adev->res.start;
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2190 pl022->virtbase = devm_ioremap(dev, adev->res.start,
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2191 resource_size(&adev->res));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2192 if (pl022->virtbase == NULL) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2193 status = -ENOMEM;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2194 goto err_no_ioremap;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2195 }
2c067509a1e3540 drivers/spi/spi-pl022.c Jingoo Han 2013-10-11 2196 dev_info(&adev->dev, "mapped registers from %pa to %p\n",
7085f403517615c drivers/spi/spi-pl022.c Fabio Estevam 2013-08-21 2197 &adev->res.start, pl022->virtbase);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2198
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2199 pl022->clk = devm_clk_get(&adev->dev, NULL);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2200 if (IS_ERR(pl022->clk)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2201 status = PTR_ERR(pl022->clk);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2202 dev_err(&adev->dev, "could not retrieve SSP/SPI bus clock\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2203 goto err_no_clk;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2204 }
7ff6bcf048e6a98 drivers/spi/spi-pl022.c Russell King 2011-09-22 2205
6cac167b826eced drivers/spi/spi-pl022.c Ulf Hansson 2014-02-04 2206 status = clk_prepare_enable(pl022->clk);
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2207 if (status) {
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2208 dev_err(&adev->dev, "could not enable SSP/SPI bus clock\n");
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2209 goto err_no_clk_en;
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2210 }
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2211
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2212 /* Initialize transfer pump */
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2213 tasklet_init(&pl022->pump_transfers, pump_transfers,
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2214 (unsigned long)pl022);
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2215
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2216 /* Disable SSP */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2217 writew((readw(SSP_CR1(pl022->virtbase)) & (~SSP_CR1_MASK_SSE)),
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2218 SSP_CR1(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2219 load_ssp_default_config(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2220
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2221 status = devm_request_irq(dev, adev->irq[0], pl022_interrupt_handler,
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2222 0, "pl022", pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2223 if (status < 0) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2224 dev_err(&adev->dev, "probe - cannot get IRQ (%d)\n", status);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2225 goto err_no_irq;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2226 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2227
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2228 /* Get DMA channels, try autoconfiguration first */
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2229 status = pl022_dma_autoprobe(pl022);
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 2230 if (status == -EPROBE_DEFER) {
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 2231 dev_dbg(dev, "deferring probe to get DMA channel\n");
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 2232 goto err_no_irq;
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 2233 }
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2234
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2235 /* If that failed, use channels from platform_info */
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2236 if (status == 0)
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2237 platform_info->enable_dma = 1;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2238 else if (platform_info->enable_dma) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2239 status = pl022_dma_probe(pl022);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2240 if (status != 0)
43c640157d4366a drivers/spi/amba-pl022.c Viresh Kumar 2011-05-16 2241 platform_info->enable_dma = 0;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2242 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2243
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2244 /* Register with the SPI framework */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2245 amba_set_drvdata(adev, pl022);
35794a77168b739 drivers/spi/spi-pl022.c Jingoo Han 2013-09-24 2246 status = devm_spi_register_master(&adev->dev, master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2247 if (status != 0) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2248 dev_err(&adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2249 "probe - problem registering spi master\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2250 goto err_spi_register;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2251 }
25985edcedea639 drivers/spi/amba-pl022.c Lucas De Marchi 2011-03-30 2252 dev_dbg(dev, "probe succeeded\n");
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2253
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2254 /* let runtime pm put suspend */
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2255 if (platform_info->autosuspend_delay > 0) {
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2256 dev_info(&adev->dev,
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2257 "will use autosuspend for runtime pm, delay %dms\n",
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2258 platform_info->autosuspend_delay);
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2259 pm_runtime_set_autosuspend_delay(dev,
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2260 platform_info->autosuspend_delay);
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2261 pm_runtime_use_autosuspend(dev);
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2262 }
0df349945752bf0 drivers/spi/spi-pl022.c Ulf Hansson 2012-10-17 2263 pm_runtime_put(dev);
0df349945752bf0 drivers/spi/spi-pl022.c Ulf Hansson 2012-10-17 2264
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2265 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2266
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2267 err_spi_register:
3e3ea716270dc64 drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2268 if (platform_info->enable_dma)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2269 pl022_dma_remove(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2270 err_no_irq:
6cac167b826eced drivers/spi/spi-pl022.c Ulf Hansson 2014-02-04 2271 clk_disable_unprepare(pl022->clk);
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2272 err_no_clk_en:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2273 err_no_clk:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2274 err_no_ioremap:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2275 amba_release_regions(adev);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2276 err_no_ioregion:
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2277 err_no_gpio:
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2278 err_no_mem:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2279 spi_master_put(master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2280 return status;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2281 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2282
fd4a319bc933ae9 drivers/spi/spi-pl022.c Grant Likely 2012-12-07 2283 static int
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2284 pl022_remove(struct amba_device *adev)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2285 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2286 struct pl022 *pl022 = amba_get_drvdata(adev);
50658b6602dad6d drivers/spi/spi-pl022.c Linus Walleij 2011-08-02 2287
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2288 if (!pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2289 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2290
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2291 /*
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2292 * undo pm_runtime_put() in probe. I assume that we're not
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2293 * accessing the primecell here.
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2294 */
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2295 pm_runtime_get_noresume(&adev->dev);
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2296
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2297 load_ssp_default_config(pl022);
3e3ea716270dc64 drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2298 if (pl022->master_info->enable_dma)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2299 pl022_dma_remove(pl022);
3e3ea716270dc64 drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2300
6cac167b826eced drivers/spi/spi-pl022.c Ulf Hansson 2014-02-04 2301 clk_disable_unprepare(pl022->clk);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2302 amba_release_regions(adev);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2303 tasklet_disable(&pl022->pump_transfers);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2304 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2305 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2306
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2307 #ifdef CONFIG_PM_SLEEP
6cfa6279edbffa9 drivers/spi/spi-pl022.c Peter Hüwe 2011-09-05 2308 static int pl022_suspend(struct device *dev)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2309 {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2310 struct pl022 *pl022 = dev_get_drvdata(dev);
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2311 int ret;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2312
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2313 ret = spi_master_suspend(pl022->master);
7c5d8a249acadc3 drivers/spi/spi-pl022.c Geert Uytterhoeven 2018-09-05 2314 if (ret)
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2315 return ret;
4964a26df72c4a8 drivers/spi/spi-pl022.c Ulf Hansson 2012-10-17 2316
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2317 ret = pm_runtime_force_suspend(dev);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2318 if (ret) {
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2319 spi_master_resume(pl022->master);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2320 return ret;
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2321 }
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2322
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2323 pinctrl_pm_select_sleep_state(dev);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2324
6cfa6279edbffa9 drivers/spi/spi-pl022.c Peter Hüwe 2011-09-05 2325 dev_dbg(dev, "suspended\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2326 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2327 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2328
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2329 static int pl022_resume(struct device *dev)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2330 {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2331 struct pl022 *pl022 = dev_get_drvdata(dev);
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2332 int ret;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2333
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2334 ret = pm_runtime_force_resume(dev);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2335 if (ret)
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2336 dev_err(dev, "problem resuming\n");
ada7aec7eec0ca2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2337
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2338 /* Start the queue running */
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2339 ret = spi_master_resume(pl022->master);
7c5d8a249acadc3 drivers/spi/spi-pl022.c Geert Uytterhoeven 2018-09-05 2340 if (!ret)
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2341 dev_dbg(dev, "resumed\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2342
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2343 return ret;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2344 }
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2345 #endif
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2346
736198b0486c8d5 drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2347 #ifdef CONFIG_PM
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2348 static int pl022_runtime_suspend(struct device *dev)
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2349 {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2350 struct pl022 *pl022 = dev_get_drvdata(dev);
4f5e1b370845a0a drivers/spi/spi-pl022.c Patrice Chotard 2012-09-19 2351
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2352 clk_disable_unprepare(pl022->clk);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2353 pinctrl_pm_select_idle_state(dev);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2354
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2355 return 0;
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2356 }
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2357
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2358 static int pl022_runtime_resume(struct device *dev)
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2359 {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2360 struct pl022 *pl022 = dev_get_drvdata(dev);
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2361
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2362 pinctrl_pm_select_default_state(dev);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2363 clk_prepare_enable(pl022->clk);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2364
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2365 return 0;
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2366 }
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2367 #endif
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2368
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2369 static const struct dev_pm_ops pl022_dev_pm_ops = {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2370 SET_SYSTEM_SLEEP_PM_OPS(pl022_suspend, pl022_resume)
6ed23b806e73bdd drivers/spi/spi-pl022.c Rafael J. Wysocki 2014-12-04 2371 SET_RUNTIME_PM_OPS(pl022_runtime_suspend, pl022_runtime_resume, NULL)
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2372 };
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2373
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2374 static struct vendor_data vendor_arm = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2375 .fifodepth = 8,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2376 .max_bpw = 16,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2377 .unidir = false,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2378 .extended_cr = false,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2379 .pl023 = false,
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2380 .loopback = true,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2381 .internal_cs_ctrl = false,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2382 };
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2383
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2384 static struct vendor_data vendor_st = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2385 .fifodepth = 32,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2386 .max_bpw = 32,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2387 .unidir = false,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2388 .extended_cr = true,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2389 .pl023 = false,
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2390 .loopback = true,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2391 .internal_cs_ctrl = false,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2392 };
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2393
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2394 static struct vendor_data vendor_st_pl023 = {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2395 .fifodepth = 32,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2396 .max_bpw = 32,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2397 .unidir = false,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2398 .extended_cr = true,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2399 .pl023 = true,
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2400 .loopback = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2401 .internal_cs_ctrl = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2402 };
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2403
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2404 static struct vendor_data vendor_lsi = {
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2405 .fifodepth = 8,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2406 .max_bpw = 16,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2407 .unidir = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2408 .extended_cr = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2409 .pl023 = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2410 .loopback = true,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2411 .internal_cs_ctrl = true,
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2412 };
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2413
5b8d5ad2308d2d5 drivers/spi/spi-pl022.c Arvind Yadav 2017-08-23 2414 static const struct amba_id pl022_ids[] = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2415 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2416 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2417 * ARM PL022 variant, this has a 16bit wide
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2418 * and 8 locations deep TX/RX FIFO
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2419 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2420 .id = 0x00041022,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2421 .mask = 0x000fffff,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2422 .data = &vendor_arm,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2423 },
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2424 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2425 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2426 * ST Micro derivative, this has 32bit wide
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2427 * and 32 locations deep TX/RX FIFO
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2428 */
e89e04fcdce6146 drivers/spi/amba-pl022.c Srinidhi Kasagar 2009-10-05 2429 .id = 0x01080022,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2430 .mask = 0xffffffff,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2431 .data = &vendor_st,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2432 },
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2433 {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2434 /*
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2435 * ST-Ericsson derivative "PL023" (this is not
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2436 * an official ARM number), this is a PL022 SSP block
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2437 * stripped to SPI mode only, it has 32bit wide
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2438 * and 32 locations deep TX/RX FIFO but no extended
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2439 * CR0/CR1 register
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2440 */
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2441 .id = 0x00080023,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2442 .mask = 0xffffffff,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2443 .data = &vendor_st_pl023,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2444 },
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2445 {
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2446 /*
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2447 * PL022 variant that has a chip select control register whih
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2448 * allows control of 5 output signals nCS[0:4].
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2449 */
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2450 .id = 0x000b6022,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2451 .mask = 0x000fffff,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2452 .data = &vendor_lsi,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2453 },
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2454 { 0, 0 },
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2455 };
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2456
7eeac71b9fc9b3d drivers/spi/spi-pl022.c Dave Martin 2011-10-05 2457 MODULE_DEVICE_TABLE(amba, pl022_ids);
7eeac71b9fc9b3d drivers/spi/spi-pl022.c Dave Martin 2011-10-05 2458
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2459 static struct amba_driver pl022_driver = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2460 .drv = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2461 .name = "ssp-pl022",
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2462 .pm = &pl022_dev_pm_ops,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2463 },
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2464 .id_table = pl022_ids,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2465 .probe = pl022_probe,
fd4a319bc933ae9 drivers/spi/spi-pl022.c Grant Likely 2012-12-07 2466 .remove = pl022_remove,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2467 };
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2468
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2469 static int __init pl022_init(void)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2470 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2471 return amba_driver_register(&pl022_driver);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2472 }
25c8e03bdb769df drivers/spi/amba-pl022.c Linus Walleij 2010-09-06 2473 subsys_initcall(pl022_init);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2474
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2475 static void __exit pl022_exit(void)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2476 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2477 amba_driver_unregister(&pl022_driver);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2478 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2479 module_exit(pl022_exit);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2480
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2481 MODULE_AUTHOR("Linus Walleij <linus.walleij@stericsson.com>");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2482 MODULE_DESCRIPTION("PL022 SSP Controller Driver");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2483 MODULE_LICENSE("GPL");
:::::: The code at line 1852 was first introduced by commit
:::::: 6d3952a7dfa80919842bbe01ac7f693d40a1eb84 spi/pl022: Add devicetree support
:::::: TO: Roland Stigge <stigge@antcom.de>
:::::: CC: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 66320 bytes --]
^ permalink raw reply
* [gpio:gpio-descriptors-spi 5/5] drivers//spi/spi-pl022.c:442:22: error: 'struct pl022' has no member named 'cur_cs'; did you mean 'cur_msg'?
From: kbuild test robot @ 2019-08-06 6:28 UTC (permalink / raw)
To: Linus Walleij; +Cc: kbuild-all, linux-gpio
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=unknown-8bit, Size: 236134 bytes --]
tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/linusw/linux-gpio.git gpio-descriptors-spi
head: 6e5614b6476001adb8ce6e2859bc2ca0a4339398
commit: 6e5614b6476001adb8ce6e2859bc2ca0a4339398 [5/5] slask
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 6e5614b6476001adb8ce6e2859bc2ca0a4339398
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=arm
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from include/linux/bitops.h:5:0,
from include/linux/kernel.h:12,
from include/linux/list.h:9,
from include/linux/module.h:9,
from drivers//spi/spi-pl022.c:17:
drivers//spi/spi-pl022.c: In function 'pl022_set_cs':
>> drivers//spi/spi-pl022.c:442:22: error: 'struct pl022' has no member named 'cur_cs'; did you mean 'cur_msg'?
tmp &= ~BIT(pl022->cur_cs);
^
include/linux/bits.h:8:30: note: in definition of macro 'BIT'
#define BIT(nr) (UL(1) << (nr))
^~
drivers//spi/spi-pl022.c:444:21: error: 'struct pl022' has no member named 'cur_cs'; did you mean 'cur_msg'?
tmp |= BIT(pl022->cur_cs);
^
include/linux/bits.h:8:30: note: in definition of macro 'BIT'
#define BIT(nr) (UL(1) << (nr))
^~
drivers//spi/spi-pl022.c: In function 'giveback':
>> drivers//spi/spi-pl022.c:493:4: error: implicit declaration of function 'pl022_cs_control'; did you mean 'pl022_set_cs'? [-Werror=implicit-function-declaration]
pl022_cs_control(pl022, SSP_CHIP_DESELECT);
^~~~~~~~~~~~~~~~
pl022_set_cs
drivers//spi/spi-pl022.c: In function 'pl022_transfer_one_message':
drivers//spi/spi-pl022.c:1571:9: error: 'struct pl022' has no member named 'cur_cs'; did you mean 'cur_msg'?
pl022->cur_cs = pl022->chipselects[msg->spi->chip_select];
^~~~~~
cur_msg
>> drivers//spi/spi-pl022.c:1571:23: error: 'struct pl022' has no member named 'chipselects'
pl022->cur_cs = pl022->chipselects[msg->spi->chip_select];
^~
drivers//spi/spi-pl022.c: In function 'pl022_setup':
>> drivers//spi/spi-pl022.c:1852:4: error: implicit declaration of function 'of_property_read_u32' [-Werror=implicit-function-declaration]
of_property_read_u32(np, "pl022,interface",
^~~~~~~~~~~~~~~~~~~~
>> drivers//spi/spi-pl022.c:1914:7: error: implicit declaration of function 'gpio_is_valid'; did you mean 'uuid_is_valid'? [-Werror=implicit-function-declaration]
if (!gpio_is_valid(pl022->chipselects[spi->chip_select]))
^~~~~~~~~~~~~
uuid_is_valid
drivers//spi/spi-pl022.c:1914:26: error: 'struct pl022' has no member named 'chipselects'
if (!gpio_is_valid(pl022->chipselects[spi->chip_select]))
^~
drivers//spi/spi-pl022.c: In function 'pl022_platform_data_dt_get':
>> drivers//spi/spi-pl022.c:2081:11: error: implicit declaration of function 'of_property_read_bool' [-Werror=implicit-function-declaration]
pd->rt = of_property_read_bool(np, "pl022,rt");
^~~~~~~~~~~~~~~~~~~~~
drivers//spi/spi-pl022.c: In function 'pl022_probe':
drivers//spi/spi-pl022.c:2125:7: error: 'struct pl022' has no member named 'chipselects'
pl022->chipselects = devm_kcalloc(dev, num_cs, sizeof(int),
^~
drivers//spi/spi-pl022.c:2127:12: error: 'struct pl022' has no member named 'chipselects'
if (!pl022->chipselects) {
^~
drivers//spi/spi-pl022.c:2137:8: warning: statement with no effect [-Wunused-value]
master->use_gpio_descriptors;
~~~~~~^~~~~~~~~~~~~~~~~~~~~~
drivers//spi/spi-pl022.c:2150:9: error: 'struct pl022' has no member named 'chipselects'
pl022->chipselects[i] = i;
^~
>> drivers//spi/spi-pl022.c:2153:18: error: implicit declaration of function 'of_get_named_gpio'; did you mean 'fwnode_get_named_gpiod'? [-Werror=implicit-function-declaration]
int cs_gpio = of_get_named_gpio(np, "cs-gpios", i);
^~~~~~~~~~~~~~~~~
fwnode_get_named_gpiod
drivers//spi/spi-pl022.c:2160:9: error: 'struct pl022' has no member named 'chipselects'
pl022->chipselects[i] = cs_gpio;
^~
>> drivers//spi/spi-pl022.c:2163:9: error: implicit declaration of function 'devm_gpio_request'; did you mean 'devm_gpiod_put'? [-Werror=implicit-function-declaration]
if (devm_gpio_request(dev, cs_gpio, "ssp-pl022"))
^~~~~~~~~~~~~~~~~
devm_gpiod_put
>> drivers//spi/spi-pl022.c:2167:14: error: implicit declaration of function 'gpio_direction_output'; did you mean 'gpiod_direction_output'? [-Werror=implicit-function-declaration]
else if (gpio_direction_output(cs_gpio, 1))
^~~~~~~~~~~~~~~~~~~~~
gpiod_direction_output
cc1: some warnings being treated as errors
vim +442 drivers//spi/spi-pl022.c
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 421
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 422 static void pl022_set_cs(struct spi_device *spi, bool enable)
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 423 {
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 424 struct pl022 *pl022 = spi_controller_get_devdata(spi->controller);
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 425 u32 tmp;
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 426
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 427 /*
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 428 * This callback will ONLY be called of no GPIO descriptors were found
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 429 * for the device, so we know we are dealing exclusively with variants
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 430 * that have internal CS control here, but just to be sure: extra check
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 431 * for now.
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 432 */
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 433 if (!pl022->vendor->internal_cs_ctrl) {
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 434 dev_err(&spi->dev,
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 435 "called internal CS control on unsupported device\n");
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 436 return;
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 437 }
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 438
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 439 /* We draw a line low here to imply we enable it */
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 440 tmp = readw(SSP_CSR(pl022->virtbase));
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 441 if (enable)
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 @442 tmp &= ~BIT(pl022->cur_cs);
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 443 else
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 @444 tmp |= BIT(pl022->cur_cs);
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 445 writew(tmp, SSP_CSR(pl022->virtbase));
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 446 }
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 447
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 448 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 449 * giveback - current spi_message is over, schedule next message and call
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 450 * callback of this message. Assumes that caller already
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 451 * set message->status; dma and pio irqs are blocked
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 452 * @pl022: SSP driver private data structure
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 453 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 454 static void giveback(struct pl022 *pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 455 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 456 struct spi_transfer *last_transfer;
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 457 pl022->next_msg_cs_active = false;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 458
23e2c2aa45a213e drivers/spi/spi-pl022.c Axel Lin 2014-02-12 459 last_transfer = list_last_entry(&pl022->cur_msg->transfers,
23e2c2aa45a213e drivers/spi/spi-pl022.c Axel Lin 2014-02-12 460 struct spi_transfer, transfer_list);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 461
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 462 /* Delay if requested before any change in chip select */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 463 if (last_transfer->delay_usecs)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 464 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 465 * FIXME: This runs in interrupt context.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 466 * Is this really smart?
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 467 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 468 udelay(last_transfer->delay_usecs);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 469
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 470 if (!last_transfer->cs_change) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 471 struct spi_message *next_msg;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 472
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 473 /*
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 474 * cs_change was not set. We can keep the chip select
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 475 * enabled if there is message in the queue and it is
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 476 * for the same spi device.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 477 *
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 478 * We cannot postpone this until pump_messages, because
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 479 * after calling msg->complete (below) the driver that
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 480 * sent the current message could be unloaded, which
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 481 * could invalidate the cs_control() callback...
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 482 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 483 /* get a pointer to the next message, if any */
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 484 next_msg = spi_get_next_queued_message(pl022->master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 485
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 486 /*
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 487 * see if the next and current messages point
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 488 * to the same spi device.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 489 */
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 490 if (next_msg && next_msg->spi != pl022->cur_msg->spi)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 491 next_msg = NULL;
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 492 if (!next_msg || pl022->cur_msg->state == STATE_ERROR)
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 @493 pl022_cs_control(pl022, SSP_CHIP_DESELECT);
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 494 else
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 495 pl022->next_msg_cs_active = true;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 496
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 497 }
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 498
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 499 pl022->cur_msg = NULL;
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 500 pl022->cur_transfer = NULL;
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 501 pl022->cur_chip = NULL;
fd316941cfee1fb drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2012-06-12 502
fd316941cfee1fb drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2012-06-12 503 /* disable the SPI/SSP operation */
fd316941cfee1fb drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2012-06-12 504 writew((readw(SSP_CR1(pl022->virtbase)) &
fd316941cfee1fb drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2012-06-12 505 (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase));
fd316941cfee1fb drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2012-06-12 506
cd6fa8d2ca53cac drivers/spi/spi-pl022.c Alexander Sverdlin 2015-02-27 507 spi_finalize_current_message(pl022->master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 508 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 509
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 510 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 511 * flush - flush the FIFO to reach a clean state
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 512 * @pl022: SSP driver private data structure
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 513 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 514 static int flush(struct pl022 *pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 515 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 516 unsigned long limit = loops_per_jiffy << 1;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 517
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 518 dev_dbg(&pl022->adev->dev, "flush\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 519 do {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 520 while (readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RNE)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 521 readw(SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 522 } while ((readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_BSY) && limit--);
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 523
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 524 pl022->exp_fifo_level = 0;
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 525
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 526 return limit;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 527 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 528
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 529 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 530 * restore_state - Load configuration of current chip
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 531 * @pl022: SSP driver private data structure
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 532 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 533 static void restore_state(struct pl022 *pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 534 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 535 struct chip_data *chip = pl022->cur_chip;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 536
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 537 if (pl022->vendor->extended_cr)
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 538 writel(chip->cr0, SSP_CR0(pl022->virtbase));
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 539 else
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 540 writew(chip->cr0, SSP_CR0(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 541 writew(chip->cr1, SSP_CR1(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 542 writew(chip->dmacr, SSP_DMACR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 543 writew(chip->cpsr, SSP_CPSR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 544 writew(DISABLE_ALL_INTERRUPTS, SSP_IMSC(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 545 writew(CLEAR_ALL_INTERRUPTS, SSP_ICR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 546 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 547
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 548 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 549 * Default SSP Register Values
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 550 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 551 #define DEFAULT_SSP_REG_CR0 ( \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 552 GEN_MASK_BITS(SSP_DATA_BITS_12, SSP_CR0_MASK_DSS, 0) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 553 GEN_MASK_BITS(SSP_INTERFACE_MOTOROLA_SPI, SSP_CR0_MASK_FRF, 4) | \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 554 GEN_MASK_BITS(SSP_CLK_POL_IDLE_LOW, SSP_CR0_MASK_SPO, 6) | \
ee2b805c8eb6459 drivers/spi/amba-pl022.c Linus Walleij 2009-08-15 555 GEN_MASK_BITS(SSP_CLK_SECOND_EDGE, SSP_CR0_MASK_SPH, 7) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 556 GEN_MASK_BITS(SSP_DEFAULT_CLKRATE, SSP_CR0_MASK_SCR, 8) \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 557 )
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 558
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 559 /* ST versions have slightly different bit layout */
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 560 #define DEFAULT_SSP_REG_CR0_ST ( \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 561 GEN_MASK_BITS(SSP_DATA_BITS_12, SSP_CR0_MASK_DSS_ST, 0) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 562 GEN_MASK_BITS(SSP_MICROWIRE_CHANNEL_FULL_DUPLEX, SSP_CR0_MASK_HALFDUP_ST, 5) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 563 GEN_MASK_BITS(SSP_CLK_POL_IDLE_LOW, SSP_CR0_MASK_SPO, 6) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 564 GEN_MASK_BITS(SSP_CLK_SECOND_EDGE, SSP_CR0_MASK_SPH, 7) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 565 GEN_MASK_BITS(SSP_DEFAULT_CLKRATE, SSP_CR0_MASK_SCR, 8) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 566 GEN_MASK_BITS(SSP_BITS_8, SSP_CR0_MASK_CSS_ST, 16) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 567 GEN_MASK_BITS(SSP_INTERFACE_MOTOROLA_SPI, SSP_CR0_MASK_FRF_ST, 21) \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 568 )
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 569
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 570 /* The PL023 version is slightly different again */
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 571 #define DEFAULT_SSP_REG_CR0_ST_PL023 ( \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 572 GEN_MASK_BITS(SSP_DATA_BITS_12, SSP_CR0_MASK_DSS_ST, 0) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 573 GEN_MASK_BITS(SSP_CLK_POL_IDLE_LOW, SSP_CR0_MASK_SPO, 6) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 574 GEN_MASK_BITS(SSP_CLK_SECOND_EDGE, SSP_CR0_MASK_SPH, 7) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 575 GEN_MASK_BITS(SSP_DEFAULT_CLKRATE, SSP_CR0_MASK_SCR, 8) \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 576 )
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 577
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 578 #define DEFAULT_SSP_REG_CR1 ( \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 579 GEN_MASK_BITS(LOOPBACK_DISABLED, SSP_CR1_MASK_LBM, 0) | \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 580 GEN_MASK_BITS(SSP_DISABLED, SSP_CR1_MASK_SSE, 1) | \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 581 GEN_MASK_BITS(SSP_MASTER, SSP_CR1_MASK_MS, 2) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 582 GEN_MASK_BITS(DO_NOT_DRIVE_TX, SSP_CR1_MASK_SOD, 3) \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 583 )
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 584
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 585 /* ST versions extend this register to use all 16 bits */
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 586 #define DEFAULT_SSP_REG_CR1_ST ( \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 587 DEFAULT_SSP_REG_CR1 | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 588 GEN_MASK_BITS(SSP_RX_MSB, SSP_CR1_MASK_RENDN_ST, 4) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 589 GEN_MASK_BITS(SSP_TX_MSB, SSP_CR1_MASK_TENDN_ST, 5) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 590 GEN_MASK_BITS(SSP_MWIRE_WAIT_ZERO, SSP_CR1_MASK_MWAIT_ST, 6) |\
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 591 GEN_MASK_BITS(SSP_RX_1_OR_MORE_ELEM, SSP_CR1_MASK_RXIFLSEL_ST, 7) | \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 592 GEN_MASK_BITS(SSP_TX_1_OR_MORE_EMPTY_LOC, SSP_CR1_MASK_TXIFLSEL_ST, 10) \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 593 )
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 594
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 595 /*
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 596 * The PL023 variant has further differences: no loopback mode, no microwire
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 597 * support, and a new clock feedback delay setting.
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 598 */
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 599 #define DEFAULT_SSP_REG_CR1_ST_PL023 ( \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 600 GEN_MASK_BITS(SSP_DISABLED, SSP_CR1_MASK_SSE, 1) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 601 GEN_MASK_BITS(SSP_MASTER, SSP_CR1_MASK_MS, 2) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 602 GEN_MASK_BITS(DO_NOT_DRIVE_TX, SSP_CR1_MASK_SOD, 3) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 603 GEN_MASK_BITS(SSP_RX_MSB, SSP_CR1_MASK_RENDN_ST, 4) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 604 GEN_MASK_BITS(SSP_TX_MSB, SSP_CR1_MASK_TENDN_ST, 5) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 605 GEN_MASK_BITS(SSP_RX_1_OR_MORE_ELEM, SSP_CR1_MASK_RXIFLSEL_ST, 7) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 606 GEN_MASK_BITS(SSP_TX_1_OR_MORE_EMPTY_LOC, SSP_CR1_MASK_TXIFLSEL_ST, 10) | \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 607 GEN_MASK_BITS(SSP_FEEDBACK_CLK_DELAY_NONE, SSP_CR1_MASK_FBCLKDEL_ST, 13) \
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 608 )
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 609
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 610 #define DEFAULT_SSP_REG_CPSR ( \
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 611 GEN_MASK_BITS(SSP_DEFAULT_PRESCALE, SSP_CPSR_MASK_CPSDVSR, 0) \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 612 )
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 613
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 614 #define DEFAULT_SSP_REG_DMACR (\
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 615 GEN_MASK_BITS(SSP_DMA_DISABLED, SSP_DMACR_MASK_RXDMAE, 0) | \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 616 GEN_MASK_BITS(SSP_DMA_DISABLED, SSP_DMACR_MASK_TXDMAE, 1) \
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 617 )
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 618
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 619 /**
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 620 * load_ssp_default_config - Load default configuration for SSP
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 621 * @pl022: SSP driver private data structure
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 622 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 623 static void load_ssp_default_config(struct pl022 *pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 624 {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 625 if (pl022->vendor->pl023) {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 626 writel(DEFAULT_SSP_REG_CR0_ST_PL023, SSP_CR0(pl022->virtbase));
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 627 writew(DEFAULT_SSP_REG_CR1_ST_PL023, SSP_CR1(pl022->virtbase));
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 628 } else if (pl022->vendor->extended_cr) {
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 629 writel(DEFAULT_SSP_REG_CR0_ST, SSP_CR0(pl022->virtbase));
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 630 writew(DEFAULT_SSP_REG_CR1_ST, SSP_CR1(pl022->virtbase));
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 631 } else {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 632 writew(DEFAULT_SSP_REG_CR0, SSP_CR0(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 633 writew(DEFAULT_SSP_REG_CR1, SSP_CR1(pl022->virtbase));
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 634 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 635 writew(DEFAULT_SSP_REG_DMACR, SSP_DMACR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 636 writew(DEFAULT_SSP_REG_CPSR, SSP_CPSR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 637 writew(DISABLE_ALL_INTERRUPTS, SSP_IMSC(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 638 writew(CLEAR_ALL_INTERRUPTS, SSP_ICR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 639 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 640
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 641 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 642 * This will write to TX and read from RX according to the parameters
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 643 * set in pl022.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 644 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 645 static void readwriter(struct pl022 *pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 646 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 647
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 648 /*
25985edcedea639 drivers/spi/amba-pl022.c Lucas De Marchi 2011-03-30 649 * The FIFO depth is different between primecell variants.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 650 * I believe filling in too much in the FIFO might cause
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 651 * errons in 8bit wide transfers on ARM variants (just 8 words
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 652 * FIFO, means only 8x8 = 64 bits in FIFO) at least.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 653 *
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 654 * To prevent this issue, the TX FIFO is only filled to the
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 655 * unused RX FIFO fill length, regardless of what the TX
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 656 * FIFO status flag indicates.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 657 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 658 dev_dbg(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 659 "%s, rx: %p, rxend: %p, tx: %p, txend: %p\n",
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 660 __func__, pl022->rx, pl022->rx_end, pl022->tx, pl022->tx_end);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 661
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 662 /* Read as much as you can */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 663 while ((readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RNE)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 664 && (pl022->rx < pl022->rx_end)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 665 switch (pl022->read) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 666 case READING_NULL:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 667 readw(SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 668 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 669 case READING_U8:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 670 *(u8 *) (pl022->rx) =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 671 readw(SSP_DR(pl022->virtbase)) & 0xFFU;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 672 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 673 case READING_U16:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 674 *(u16 *) (pl022->rx) =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 675 (u16) readw(SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 676 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 677 case READING_U32:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 678 *(u32 *) (pl022->rx) =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 679 readl(SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 680 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 681 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 682 pl022->rx += (pl022->cur_chip->n_bytes);
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 683 pl022->exp_fifo_level--;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 684 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 685 /*
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 686 * Write as much as possible up to the RX FIFO size
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 687 */
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 688 while ((pl022->exp_fifo_level < pl022->vendor->fifodepth)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 689 && (pl022->tx < pl022->tx_end)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 690 switch (pl022->write) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 691 case WRITING_NULL:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 692 writew(0x0, SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 693 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 694 case WRITING_U8:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 695 writew(*(u8 *) (pl022->tx), SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 696 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 697 case WRITING_U16:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 698 writew((*(u16 *) (pl022->tx)), SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 699 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 700 case WRITING_U32:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 701 writel(*(u32 *) (pl022->tx), SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 702 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 703 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 704 pl022->tx += (pl022->cur_chip->n_bytes);
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 705 pl022->exp_fifo_level++;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 706 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 707 * This inner reader takes care of things appearing in the RX
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 708 * FIFO as we're transmitting. This will happen a lot since the
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 709 * clock starts running when you put things into the TX FIFO,
25985edcedea639 drivers/spi/amba-pl022.c Lucas De Marchi 2011-03-30 710 * and then things are continuously clocked into the RX FIFO.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 711 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 712 while ((readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RNE)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 713 && (pl022->rx < pl022->rx_end)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 714 switch (pl022->read) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 715 case READING_NULL:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 716 readw(SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 717 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 718 case READING_U8:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 719 *(u8 *) (pl022->rx) =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 720 readw(SSP_DR(pl022->virtbase)) & 0xFFU;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 721 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 722 case READING_U16:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 723 *(u16 *) (pl022->rx) =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 724 (u16) readw(SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 725 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 726 case READING_U32:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 727 *(u32 *) (pl022->rx) =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 728 readl(SSP_DR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 729 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 730 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 731 pl022->rx += (pl022->cur_chip->n_bytes);
fc05475f867624d drivers/spi/amba-pl022.c Linus Walleij 2010-01-22 732 pl022->exp_fifo_level--;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 733 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 734 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 735 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 736 * When we exit here the TX FIFO should be full and the RX FIFO
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 737 * should be empty
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 738 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 739 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 740
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 741 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 742 * next_transfer - Move to the Next transfer in the current spi message
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 743 * @pl022: SSP driver private data structure
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 744 *
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 745 * This function moves though the linked list of spi transfers in the
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 746 * current spi message and returns with the state of current spi
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 747 * message i.e whether its last transfer is done(STATE_DONE) or
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 748 * Next transfer is ready(STATE_RUNNING)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 749 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 750 static void *next_transfer(struct pl022 *pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 751 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 752 struct spi_message *msg = pl022->cur_msg;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 753 struct spi_transfer *trans = pl022->cur_transfer;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 754
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 755 /* Move to next transfer */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 756 if (trans->transfer_list.next != &msg->transfers) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 757 pl022->cur_transfer =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 758 list_entry(trans->transfer_list.next,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 759 struct spi_transfer, transfer_list);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 760 return STATE_RUNNING;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 761 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 762 return STATE_DONE;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 763 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 764
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 765 /*
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 766 * This DMA functionality is only compiled in if we have
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 767 * access to the generic DMA devices/DMA engine.
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 768 */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 769 #ifdef CONFIG_DMA_ENGINE
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 770 static void unmap_free_dma_scatter(struct pl022 *pl022)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 771 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 772 /* Unmap and free the SG tables */
b729889686afb7d drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 773 dma_unmap_sg(pl022->dma_tx_channel->device->dev, pl022->sgt_tx.sgl,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 774 pl022->sgt_tx.nents, DMA_TO_DEVICE);
b729889686afb7d drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 775 dma_unmap_sg(pl022->dma_rx_channel->device->dev, pl022->sgt_rx.sgl,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 776 pl022->sgt_rx.nents, DMA_FROM_DEVICE);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 777 sg_free_table(&pl022->sgt_rx);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 778 sg_free_table(&pl022->sgt_tx);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 779 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 780
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 781 static void dma_callback(void *data)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 782 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 783 struct pl022 *pl022 = data;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 784 struct spi_message *msg = pl022->cur_msg;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 785
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 786 BUG_ON(!pl022->sgt_rx.sgl);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 787
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 788 #ifdef VERBOSE_DEBUG
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 789 /*
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 790 * Optionally dump out buffers to inspect contents, this is
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 791 * good if you want to convince yourself that the loopback
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 792 * read/write contents are the same, when adopting to a new
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 793 * DMA engine.
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 794 */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 795 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 796 struct scatterlist *sg;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 797 unsigned int i;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 798
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 799 dma_sync_sg_for_cpu(&pl022->adev->dev,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 800 pl022->sgt_rx.sgl,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 801 pl022->sgt_rx.nents,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 802 DMA_FROM_DEVICE);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 803
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 804 for_each_sg(pl022->sgt_rx.sgl, sg, pl022->sgt_rx.nents, i) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 805 dev_dbg(&pl022->adev->dev, "SPI RX SG ENTRY: %d", i);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 806 print_hex_dump(KERN_ERR, "SPI RX: ",
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 807 DUMP_PREFIX_OFFSET,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 808 16,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 809 1,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 810 sg_virt(sg),
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 811 sg_dma_len(sg),
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 812 1);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 813 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 814 for_each_sg(pl022->sgt_tx.sgl, sg, pl022->sgt_tx.nents, i) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 815 dev_dbg(&pl022->adev->dev, "SPI TX SG ENTRY: %d", i);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 816 print_hex_dump(KERN_ERR, "SPI TX: ",
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 817 DUMP_PREFIX_OFFSET,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 818 16,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 819 1,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 820 sg_virt(sg),
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 821 sg_dma_len(sg),
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 822 1);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 823 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 824 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 825 #endif
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 826
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 827 unmap_free_dma_scatter(pl022);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 828
25985edcedea639 drivers/spi/amba-pl022.c Lucas De Marchi 2011-03-30 829 /* Update total bytes transferred */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 830 msg->actual_length += pl022->cur_transfer->len;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 831 /* Move to next transfer */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 832 msg->state = next_transfer(pl022);
c0b07605f1a0285 drivers/spi/spi-pl022.c Fredrik Ternerot 2018-11-13 833 if (msg->state != STATE_DONE && pl022->cur_transfer->cs_change)
c0b07605f1a0285 drivers/spi/spi-pl022.c Fredrik Ternerot 2018-11-13 834 pl022_cs_control(pl022, SSP_CHIP_DESELECT);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 835 tasklet_schedule(&pl022->pump_transfers);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 836 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 837
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 838 static void setup_dma_scatter(struct pl022 *pl022,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 839 void *buffer,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 840 unsigned int length,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 841 struct sg_table *sgtab)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 842 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 843 struct scatterlist *sg;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 844 int bytesleft = length;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 845 void *bufp = buffer;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 846 int mapbytes;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 847 int i;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 848
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 849 if (buffer) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 850 for_each_sg(sgtab->sgl, sg, sgtab->nents, i) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 851 /*
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 852 * If there are less bytes left than what fits
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 853 * in the current page (plus page alignment offset)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 854 * we just feed in this, else we stuff in as much
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 855 * as we can.
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 856 */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 857 if (bytesleft < (PAGE_SIZE - offset_in_page(bufp)))
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 858 mapbytes = bytesleft;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 859 else
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 860 mapbytes = PAGE_SIZE - offset_in_page(bufp);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 861 sg_set_page(sg, virt_to_page(bufp),
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 862 mapbytes, offset_in_page(bufp));
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 863 bufp += mapbytes;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 864 bytesleft -= mapbytes;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 865 dev_dbg(&pl022->adev->dev,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 866 "set RX/TX target page @ %p, %d bytes, %d left\n",
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 867 bufp, mapbytes, bytesleft);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 868 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 869 } else {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 870 /* Map the dummy buffer on every page */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 871 for_each_sg(sgtab->sgl, sg, sgtab->nents, i) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 872 if (bytesleft < PAGE_SIZE)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 873 mapbytes = bytesleft;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 874 else
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 875 mapbytes = PAGE_SIZE;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 876 sg_set_page(sg, virt_to_page(pl022->dummypage),
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 877 mapbytes, 0);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 878 bytesleft -= mapbytes;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 879 dev_dbg(&pl022->adev->dev,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 880 "set RX/TX to dummy page %d bytes, %d left\n",
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 881 mapbytes, bytesleft);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 882
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 883 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 884 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 885 BUG_ON(bytesleft);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 886 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 887
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 888 /**
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 889 * configure_dma - configures the channels for the next transfer
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 890 * @pl022: SSP driver's private data structure
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 891 */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 892 static int configure_dma(struct pl022 *pl022)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 893 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 894 struct dma_slave_config rx_conf = {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 895 .src_addr = SSP_DR(pl022->phybase),
a485df4b4404379 drivers/spi/spi-pl022.c Vinod Koul 2011-10-14 896 .direction = DMA_DEV_TO_MEM,
258aea76f552cc7 drivers/spi/spi-pl022.c Viresh Kumar 2012-02-01 897 .device_fc = false,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 898 };
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 899 struct dma_slave_config tx_conf = {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 900 .dst_addr = SSP_DR(pl022->phybase),
a485df4b4404379 drivers/spi/spi-pl022.c Vinod Koul 2011-10-14 901 .direction = DMA_MEM_TO_DEV,
258aea76f552cc7 drivers/spi/spi-pl022.c Viresh Kumar 2012-02-01 902 .device_fc = false,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 903 };
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 904 unsigned int pages;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 905 int ret;
082086f2ce53c69 drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 906 int rx_sglen, tx_sglen;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 907 struct dma_chan *rxchan = pl022->dma_rx_channel;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 908 struct dma_chan *txchan = pl022->dma_tx_channel;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 909 struct dma_async_tx_descriptor *rxdesc;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 910 struct dma_async_tx_descriptor *txdesc;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 911
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 912 /* Check that the channels are available */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 913 if (!rxchan || !txchan)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 914 return -ENODEV;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 915
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 916 /*
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 917 * If supplied, the DMA burstsize should equal the FIFO trigger level.
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 918 * Notice that the DMA engine uses one-to-one mapping. Since we can
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 919 * not trigger on 2 elements this needs explicit mapping rather than
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 920 * calculation.
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 921 */
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 922 switch (pl022->rx_lev_trig) {
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 923 case SSP_RX_1_OR_MORE_ELEM:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 924 rx_conf.src_maxburst = 1;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 925 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 926 case SSP_RX_4_OR_MORE_ELEM:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 927 rx_conf.src_maxburst = 4;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 928 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 929 case SSP_RX_8_OR_MORE_ELEM:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 930 rx_conf.src_maxburst = 8;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 931 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 932 case SSP_RX_16_OR_MORE_ELEM:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 933 rx_conf.src_maxburst = 16;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 934 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 935 case SSP_RX_32_OR_MORE_ELEM:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 936 rx_conf.src_maxburst = 32;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 937 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 938 default:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 939 rx_conf.src_maxburst = pl022->vendor->fifodepth >> 1;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 940 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 941 }
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 942
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 943 switch (pl022->tx_lev_trig) {
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 944 case SSP_TX_1_OR_MORE_EMPTY_LOC:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 945 tx_conf.dst_maxburst = 1;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 946 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 947 case SSP_TX_4_OR_MORE_EMPTY_LOC:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 948 tx_conf.dst_maxburst = 4;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 949 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 950 case SSP_TX_8_OR_MORE_EMPTY_LOC:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 951 tx_conf.dst_maxburst = 8;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 952 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 953 case SSP_TX_16_OR_MORE_EMPTY_LOC:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 954 tx_conf.dst_maxburst = 16;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 955 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 956 case SSP_TX_32_OR_MORE_EMPTY_LOC:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 957 tx_conf.dst_maxburst = 32;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 958 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 959 default:
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 960 tx_conf.dst_maxburst = pl022->vendor->fifodepth >> 1;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 961 break;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 962 }
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 963
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 964 switch (pl022->read) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 965 case READING_NULL:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 966 /* Use the same as for writing */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 967 rx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_UNDEFINED;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 968 break;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 969 case READING_U8:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 970 rx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 971 break;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 972 case READING_U16:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 973 rx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 974 break;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 975 case READING_U32:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 976 rx_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 977 break;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 978 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 979
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 980 switch (pl022->write) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 981 case WRITING_NULL:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 982 /* Use the same as for reading */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 983 tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_UNDEFINED;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 984 break;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 985 case WRITING_U8:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 986 tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 987 break;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 988 case WRITING_U16:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 989 tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 990 break;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 991 case WRITING_U32:
bc3f67a3e1b2075 drivers/spi/amba-pl022.c Joe Perches 2010-11-14 992 tx_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 993 break;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 994 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 995
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 996 /* SPI pecularity: we need to read and write the same width */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 997 if (rx_conf.src_addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 998 rx_conf.src_addr_width = tx_conf.dst_addr_width;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 999 if (tx_conf.dst_addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1000 tx_conf.dst_addr_width = rx_conf.src_addr_width;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1001 BUG_ON(rx_conf.src_addr_width != tx_conf.dst_addr_width);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1002
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1003 dmaengine_slave_config(rxchan, &rx_conf);
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1004 dmaengine_slave_config(txchan, &tx_conf);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1005
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1006 /* Create sglists for the transfers */
b181565ee6a0f89 drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1007 pages = DIV_ROUND_UP(pl022->cur_transfer->len, PAGE_SIZE);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1008 dev_dbg(&pl022->adev->dev, "using %d pages for transfer\n", pages);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1009
538a18dc189ef5d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1010 ret = sg_alloc_table(&pl022->sgt_rx, pages, GFP_ATOMIC);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1011 if (ret)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1012 goto err_alloc_rx_sg;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1013
538a18dc189ef5d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1014 ret = sg_alloc_table(&pl022->sgt_tx, pages, GFP_ATOMIC);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1015 if (ret)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1016 goto err_alloc_tx_sg;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1017
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1018 /* Fill in the scatterlists for the RX+TX buffers */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1019 setup_dma_scatter(pl022, pl022->rx,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1020 pl022->cur_transfer->len, &pl022->sgt_rx);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1021 setup_dma_scatter(pl022, pl022->tx,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1022 pl022->cur_transfer->len, &pl022->sgt_tx);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1023
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1024 /* Map DMA buffers */
082086f2ce53c69 drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 1025 rx_sglen = dma_map_sg(rxchan->device->dev, pl022->sgt_rx.sgl,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1026 pl022->sgt_rx.nents, DMA_FROM_DEVICE);
082086f2ce53c69 drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 1027 if (!rx_sglen)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1028 goto err_rx_sgmap;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1029
082086f2ce53c69 drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 1030 tx_sglen = dma_map_sg(txchan->device->dev, pl022->sgt_tx.sgl,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1031 pl022->sgt_tx.nents, DMA_TO_DEVICE);
082086f2ce53c69 drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 1032 if (!tx_sglen)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1033 goto err_tx_sgmap;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1034
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1035 /* Send both scatterlists */
16052827d98fbc1 drivers/spi/spi-pl022.c Alexandre Bounine 2012-03-08 1036 rxdesc = dmaengine_prep_slave_sg(rxchan,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1037 pl022->sgt_rx.sgl,
082086f2ce53c69 drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 1038 rx_sglen,
a485df4b4404379 drivers/spi/spi-pl022.c Vinod Koul 2011-10-14 1039 DMA_DEV_TO_MEM,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1040 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1041 if (!rxdesc)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1042 goto err_rxdesc;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1043
16052827d98fbc1 drivers/spi/spi-pl022.c Alexandre Bounine 2012-03-08 1044 txdesc = dmaengine_prep_slave_sg(txchan,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1045 pl022->sgt_tx.sgl,
082086f2ce53c69 drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 1046 tx_sglen,
a485df4b4404379 drivers/spi/spi-pl022.c Vinod Koul 2011-10-14 1047 DMA_MEM_TO_DEV,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1048 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1049 if (!txdesc)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1050 goto err_txdesc;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1051
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1052 /* Put the callback on the RX transfer only, that should finish last */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1053 rxdesc->callback = dma_callback;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1054 rxdesc->callback_param = pl022;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1055
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1056 /* Submit and fire RX and TX with TX last so we're ready to read! */
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1057 dmaengine_submit(rxdesc);
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1058 dmaengine_submit(txdesc);
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1059 dma_async_issue_pending(rxchan);
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1060 dma_async_issue_pending(txchan);
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1061 pl022->dma_running = true;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1062
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1063 return 0;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1064
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1065 err_txdesc:
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1066 dmaengine_terminate_all(txchan);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1067 err_rxdesc:
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1068 dmaengine_terminate_all(rxchan);
b729889686afb7d drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 1069 dma_unmap_sg(txchan->device->dev, pl022->sgt_tx.sgl,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1070 pl022->sgt_tx.nents, DMA_TO_DEVICE);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1071 err_tx_sgmap:
b729889686afb7d drivers/spi/amba-pl022.c Linus Walleij 2010-12-22 1072 dma_unmap_sg(rxchan->device->dev, pl022->sgt_rx.sgl,
3ffa6158f002e09 drivers/spi/spi-pl022.c Ray Jui 2014-10-09 1073 pl022->sgt_rx.nents, DMA_FROM_DEVICE);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1074 err_rx_sgmap:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1075 sg_free_table(&pl022->sgt_tx);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1076 err_alloc_tx_sg:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1077 sg_free_table(&pl022->sgt_rx);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1078 err_alloc_rx_sg:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1079 return -ENOMEM;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1080 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1081
fd4a319bc933ae9 drivers/spi/spi-pl022.c Grant Likely 2012-12-07 1082 static int pl022_dma_probe(struct pl022 *pl022)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1083 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1084 dma_cap_mask_t mask;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1085
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1086 /* Try to acquire a generic DMA engine slave channel */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1087 dma_cap_zero(mask);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1088 dma_cap_set(DMA_SLAVE, mask);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1089 /*
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1090 * We need both RX and TX channels to do DMA, else do none
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1091 * of them.
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1092 */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1093 pl022->dma_rx_channel = dma_request_channel(mask,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1094 pl022->master_info->dma_filter,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1095 pl022->master_info->dma_rx_param);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1096 if (!pl022->dma_rx_channel) {
43c640157d4366a drivers/spi/amba-pl022.c Viresh Kumar 2011-05-16 1097 dev_dbg(&pl022->adev->dev, "no RX DMA channel!\n");
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1098 goto err_no_rxchan;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1099 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1100
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1101 pl022->dma_tx_channel = dma_request_channel(mask,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1102 pl022->master_info->dma_filter,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1103 pl022->master_info->dma_tx_param);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1104 if (!pl022->dma_tx_channel) {
43c640157d4366a drivers/spi/amba-pl022.c Viresh Kumar 2011-05-16 1105 dev_dbg(&pl022->adev->dev, "no TX DMA channel!\n");
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1106 goto err_no_txchan;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1107 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1108
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1109 pl022->dummypage = kmalloc(PAGE_SIZE, GFP_KERNEL);
77538f4a98dc542 drivers/spi/spi-pl022.c Jingoo Han 2014-04-29 1110 if (!pl022->dummypage)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1111 goto err_no_dummypage;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1112
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1113 dev_info(&pl022->adev->dev, "setup for DMA on RX %s, TX %s\n",
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1114 dma_chan_name(pl022->dma_rx_channel),
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1115 dma_chan_name(pl022->dma_tx_channel));
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1116
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1117 return 0;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1118
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1119 err_no_dummypage:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1120 dma_release_channel(pl022->dma_tx_channel);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1121 err_no_txchan:
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1122 dma_release_channel(pl022->dma_rx_channel);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1123 pl022->dma_rx_channel = NULL;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1124 err_no_rxchan:
43c640157d4366a drivers/spi/amba-pl022.c Viresh Kumar 2011-05-16 1125 dev_err(&pl022->adev->dev,
43c640157d4366a drivers/spi/amba-pl022.c Viresh Kumar 2011-05-16 1126 "Failed to work in dma mode, work without dma!\n");
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1127 return -ENODEV;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1128 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1129
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1130 static int pl022_dma_autoprobe(struct pl022 *pl022)
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1131 {
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1132 struct device *dev = &pl022->adev->dev;
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1133 struct dma_chan *chan;
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1134 int err;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1135
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1136 /* automatically configure DMA channels from platform, normally using DT */
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1137 chan = dma_request_slave_channel_reason(dev, "rx");
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1138 if (IS_ERR(chan)) {
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1139 err = PTR_ERR(chan);
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1140 goto err_no_rxchan;
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1141 }
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1142
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1143 pl022->dma_rx_channel = chan;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1144
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1145 chan = dma_request_slave_channel_reason(dev, "tx");
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1146 if (IS_ERR(chan)) {
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1147 err = PTR_ERR(chan);
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1148 goto err_no_txchan;
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1149 }
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1150
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1151 pl022->dma_tx_channel = chan;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1152
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1153 pl022->dummypage = kmalloc(PAGE_SIZE, GFP_KERNEL);
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1154 if (!pl022->dummypage) {
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1155 err = -ENOMEM;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1156 goto err_no_dummypage;
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1157 }
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1158
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1159 return 0;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1160
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1161 err_no_dummypage:
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1162 dma_release_channel(pl022->dma_tx_channel);
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1163 pl022->dma_tx_channel = NULL;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1164 err_no_txchan:
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1165 dma_release_channel(pl022->dma_rx_channel);
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1166 pl022->dma_rx_channel = NULL;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1167 err_no_rxchan:
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 1168 return err;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1169 }
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1170
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1171 static void terminate_dma(struct pl022 *pl022)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1172 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1173 struct dma_chan *rxchan = pl022->dma_rx_channel;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1174 struct dma_chan *txchan = pl022->dma_tx_channel;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1175
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1176 dmaengine_terminate_all(rxchan);
ecd442fd9e388a3 drivers/spi/amba-pl022.c Linus Walleij 2011-02-08 1177 dmaengine_terminate_all(txchan);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1178 unmap_free_dma_scatter(pl022);
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1179 pl022->dma_running = false;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1180 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1181
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1182 static void pl022_dma_remove(struct pl022 *pl022)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1183 {
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1184 if (pl022->dma_running)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1185 terminate_dma(pl022);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1186 if (pl022->dma_tx_channel)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1187 dma_release_channel(pl022->dma_tx_channel);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1188 if (pl022->dma_rx_channel)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1189 dma_release_channel(pl022->dma_rx_channel);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1190 kfree(pl022->dummypage);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1191 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1192
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1193 #else
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1194 static inline int configure_dma(struct pl022 *pl022)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1195 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1196 return -ENODEV;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1197 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1198
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1199 static inline int pl022_dma_autoprobe(struct pl022 *pl022)
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1200 {
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1201 return 0;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1202 }
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 1203
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1204 static inline int pl022_dma_probe(struct pl022 *pl022)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1205 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1206 return 0;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1207 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1208
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1209 static inline void pl022_dma_remove(struct pl022 *pl022)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1210 {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1211 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1212 #endif
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1213
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1214 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1215 * pl022_interrupt_handler - Interrupt handler for SSP controller
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1216 *
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1217 * This function handles interrupts generated for an interrupt based transfer.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1218 * If a receive overrun (ROR) interrupt is there then we disable SSP, flag the
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1219 * current message's state as STATE_ERROR and schedule the tasklet
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1220 * pump_transfers which will do the postprocessing of the current message by
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1221 * calling giveback(). Otherwise it reads data from RX FIFO till there is no
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1222 * more data, and writes data in TX FIFO till it is not full. If we complete
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1223 * the transfer we move to the next transfer and schedule the tasklet.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1224 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1225 static irqreturn_t pl022_interrupt_handler(int irq, void *dev_id)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1226 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1227 struct pl022 *pl022 = dev_id;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1228 struct spi_message *msg = pl022->cur_msg;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1229 u16 irq_status = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1230
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1231 if (unlikely(!msg)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1232 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1233 "bad message state in interrupt handler");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1234 /* Never fail */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1235 return IRQ_HANDLED;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1236 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1237
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1238 /* Read the Interrupt Status Register */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1239 irq_status = readw(SSP_MIS(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1240
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1241 if (unlikely(!irq_status))
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1242 return IRQ_NONE;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1243
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1244 /*
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1245 * This handles the FIFO interrupts, the timeout
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1246 * interrupts are flatly ignored, they cannot be
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1247 * trusted.
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1248 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1249 if (unlikely(irq_status & SSP_MIS_MASK_RORMIS)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1250 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1251 * Overrun interrupt - bail out since our Data has been
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1252 * corrupted
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1253 */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1254 dev_err(&pl022->adev->dev, "FIFO overrun\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1255 if (readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RFF)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1256 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1257 "RXFIFO is full\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1258
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1259 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1260 * Disable and clear interrupts, disable SSP,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1261 * mark message with bad status so it can be
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1262 * retried.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1263 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1264 writew(DISABLE_ALL_INTERRUPTS,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1265 SSP_IMSC(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1266 writew(CLEAR_ALL_INTERRUPTS, SSP_ICR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1267 writew((readw(SSP_CR1(pl022->virtbase)) &
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1268 (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1269 msg->state = STATE_ERROR;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1270
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1271 /* Schedule message queue handler */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1272 tasklet_schedule(&pl022->pump_transfers);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1273 return IRQ_HANDLED;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1274 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1275
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1276 readwriter(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1277
7183d1ebda477c4 drivers/spi/spi-pl022.c Alexander Sverdlin 2015-02-27 1278 if (pl022->tx == pl022->tx_end) {
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1279 /* Disable Transmit interrupt, enable receive interrupt */
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1280 writew((readw(SSP_IMSC(pl022->virtbase)) &
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1281 ~SSP_IMSC_MASK_TXIM) | SSP_IMSC_MASK_RXIM,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1282 SSP_IMSC(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1283 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1284
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1285 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1286 * Since all transactions must write as much as shall be read,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1287 * we can conclude the entire transaction once RX is complete.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1288 * At this point, all TX will always be finished.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1289 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1290 if (pl022->rx >= pl022->rx_end) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1291 writew(DISABLE_ALL_INTERRUPTS,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1292 SSP_IMSC(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1293 writew(CLEAR_ALL_INTERRUPTS, SSP_ICR(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1294 if (unlikely(pl022->rx > pl022->rx_end)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1295 dev_warn(&pl022->adev->dev, "read %u surplus "
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1296 "bytes (did you request an odd "
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1297 "number of bytes on a 16bit bus?)\n",
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1298 (u32) (pl022->rx - pl022->rx_end));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1299 }
25985edcedea639 drivers/spi/amba-pl022.c Lucas De Marchi 2011-03-30 1300 /* Update total bytes transferred */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1301 msg->actual_length += pl022->cur_transfer->len;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1302 /* Move to next transfer */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1303 msg->state = next_transfer(pl022);
c0b07605f1a0285 drivers/spi/spi-pl022.c Fredrik Ternerot 2018-11-13 1304 if (msg->state != STATE_DONE && pl022->cur_transfer->cs_change)
c0b07605f1a0285 drivers/spi/spi-pl022.c Fredrik Ternerot 2018-11-13 1305 pl022_cs_control(pl022, SSP_CHIP_DESELECT);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1306 tasklet_schedule(&pl022->pump_transfers);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1307 return IRQ_HANDLED;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1308 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1309
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1310 return IRQ_HANDLED;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1311 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1312
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1313 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1314 * This sets up the pointers to memory for the next message to
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1315 * send out on the SPI bus.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1316 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1317 static int set_up_next_transfer(struct pl022 *pl022,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1318 struct spi_transfer *transfer)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1319 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1320 int residue;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1321
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1322 /* Sanity check the message for this bus width */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1323 residue = pl022->cur_transfer->len % pl022->cur_chip->n_bytes;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1324 if (unlikely(residue != 0)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1325 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1326 "message of %u bytes to transmit but the current "
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1327 "chip bus has a data width of %u bytes!\n",
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1328 pl022->cur_transfer->len,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1329 pl022->cur_chip->n_bytes);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1330 dev_err(&pl022->adev->dev, "skipping this message\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1331 return -EIO;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1332 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1333 pl022->tx = (void *)transfer->tx_buf;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1334 pl022->tx_end = pl022->tx + pl022->cur_transfer->len;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1335 pl022->rx = (void *)transfer->rx_buf;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1336 pl022->rx_end = pl022->rx + pl022->cur_transfer->len;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1337 pl022->write =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1338 pl022->tx ? pl022->cur_chip->write : WRITING_NULL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1339 pl022->read = pl022->rx ? pl022->cur_chip->read : READING_NULL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1340 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1341 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1342
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1343 /**
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1344 * pump_transfers - Tasklet function which schedules next transfer
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1345 * when running in interrupt or DMA transfer mode.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1346 * @data: SSP driver private data structure
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1347 *
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1348 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1349 static void pump_transfers(unsigned long data)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1350 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1351 struct pl022 *pl022 = (struct pl022 *) data;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1352 struct spi_message *message = NULL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1353 struct spi_transfer *transfer = NULL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1354 struct spi_transfer *previous = NULL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1355
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1356 /* Get current state information */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1357 message = pl022->cur_msg;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1358 transfer = pl022->cur_transfer;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1359
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1360 /* Handle for abort */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1361 if (message->state == STATE_ERROR) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1362 message->status = -EIO;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1363 giveback(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1364 return;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1365 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1366
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1367 /* Handle end of message */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1368 if (message->state == STATE_DONE) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1369 message->status = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1370 giveback(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1371 return;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1372 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1373
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1374 /* Delay if requested at end of transfer before CS change */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1375 if (message->state == STATE_RUNNING) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1376 previous = list_entry(transfer->transfer_list.prev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1377 struct spi_transfer,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1378 transfer_list);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1379 if (previous->delay_usecs)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1380 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1381 * FIXME: This runs in interrupt context.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1382 * Is this really smart?
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1383 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1384 udelay(previous->delay_usecs);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1385
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 1386 /* Reselect chip select only if cs_change was requested */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1387 if (previous->cs_change)
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1388 pl022_cs_control(pl022, SSP_CHIP_SELECT);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1389 } else {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1390 /* STATE_START */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1391 message->state = STATE_RUNNING;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1392 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1393
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1394 if (set_up_next_transfer(pl022, transfer)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1395 message->state = STATE_ERROR;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1396 message->status = -EIO;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1397 giveback(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1398 return;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1399 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1400 /* Flush the FIFOs and let's go! */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1401 flush(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1402
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1403 if (pl022->cur_chip->enable_dma) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1404 if (configure_dma(pl022)) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1405 dev_dbg(&pl022->adev->dev,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1406 "configuration of DMA failed, fall back to interrupt mode\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1407 goto err_config_dma;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1408 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1409 return;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1410 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1411
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1412 err_config_dma:
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1413 /* enable all interrupts except RX */
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1414 writew(ENABLE_ALL_INTERRUPTS & ~SSP_IMSC_MASK_RXIM, SSP_IMSC(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1415 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1416
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1417 static void do_interrupt_dma_transfer(struct pl022 *pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1418 {
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1419 /*
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1420 * Default is to enable all interrupts except RX -
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1421 * this will be enabled once TX is complete
172289df4004ccc drivers/spi/spi-pl022.c Chris Blair 2011-06-04 1422 */
d555ea05f9d8ebf drivers/spi/spi-pl022.c Mark Brown 2014-08-01 1423 u32 irqflags = (u32)(ENABLE_ALL_INTERRUPTS & ~SSP_IMSC_MASK_RXIM);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1424
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 1425 /* Enable target chip, if not already active */
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 1426 if (!pl022->next_msg_cs_active)
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1427 pl022_cs_control(pl022, SSP_CHIP_SELECT);
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 1428
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1429 if (set_up_next_transfer(pl022, pl022->cur_transfer)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1430 /* Error path */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1431 pl022->cur_msg->state = STATE_ERROR;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1432 pl022->cur_msg->status = -EIO;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1433 giveback(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1434 return;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1435 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1436 /* If we're using DMA, set up DMA here */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1437 if (pl022->cur_chip->enable_dma) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1438 /* Configure DMA transfer */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1439 if (configure_dma(pl022)) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1440 dev_dbg(&pl022->adev->dev,
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1441 "configuration of DMA failed, fall back to interrupt mode\n");
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1442 goto err_config_dma;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1443 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1444 /* Disable interrupts in DMA mode, IRQ from DMA controller */
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1445 irqflags = DISABLE_ALL_INTERRUPTS;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1446 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1447 err_config_dma:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1448 /* Enable SSP, turn on interrupts */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1449 writew((readw(SSP_CR1(pl022->virtbase)) | SSP_CR1_MASK_SSE),
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1450 SSP_CR1(pl022->virtbase));
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1451 writew(irqflags, SSP_IMSC(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1452 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1453
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1454 static void print_current_status(struct pl022 *pl022)
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1455 {
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1456 u32 read_cr0;
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1457 u16 read_cr1, read_dmacr, read_sr;
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1458
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1459 if (pl022->vendor->extended_cr)
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1460 read_cr0 = readl(SSP_CR0(pl022->virtbase));
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1461 else
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1462 read_cr0 = readw(SSP_CR0(pl022->virtbase));
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1463 read_cr1 = readw(SSP_CR1(pl022->virtbase));
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1464 read_dmacr = readw(SSP_DMACR(pl022->virtbase));
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1465 read_sr = readw(SSP_SR(pl022->virtbase));
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1466
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1467 dev_warn(&pl022->adev->dev, "spi-pl022 CR0: %x\n", read_cr0);
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1468 dev_warn(&pl022->adev->dev, "spi-pl022 CR1: %x\n", read_cr1);
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1469 dev_warn(&pl022->adev->dev, "spi-pl022 DMACR: %x\n", read_dmacr);
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1470 dev_warn(&pl022->adev->dev, "spi-pl022 SR: %x\n", read_sr);
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1471 dev_warn(&pl022->adev->dev,
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1472 "spi-pl022 exp_fifo_level/fifodepth: %u/%d\n",
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1473 pl022->exp_fifo_level,
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1474 pl022->vendor->fifodepth);
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1475
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1476 }
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1477
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1478 static void do_polling_transfer(struct pl022 *pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1479 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1480 struct spi_message *message = NULL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1481 struct spi_transfer *transfer = NULL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1482 struct spi_transfer *previous = NULL;
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1483 unsigned long time, timeout;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1484
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1485 message = pl022->cur_msg;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1486
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1487 while (message->state != STATE_DONE) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1488 /* Handle for abort */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1489 if (message->state == STATE_ERROR)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1490 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1491 transfer = pl022->cur_transfer;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1492
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1493 /* Delay if requested at end of transfer */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1494 if (message->state == STATE_RUNNING) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1495 previous =
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1496 list_entry(transfer->transfer_list.prev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1497 struct spi_transfer, transfer_list);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1498 if (previous->delay_usecs)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1499 udelay(previous->delay_usecs);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1500 if (previous->cs_change)
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1501 pl022_cs_control(pl022, SSP_CHIP_SELECT);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1502 } else {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1503 /* STATE_START */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1504 message->state = STATE_RUNNING;
8b8d719161c3866 drivers/spi/spi-pl022.c Virupax Sadashivpetimath 2011-11-10 1505 if (!pl022->next_msg_cs_active)
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1506 pl022_cs_control(pl022, SSP_CHIP_SELECT);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1507 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1508
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1509 /* Configuration Changing Per Transfer */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1510 if (set_up_next_transfer(pl022, transfer)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1511 /* Error path */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1512 message->state = STATE_ERROR;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1513 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1514 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1515 /* Flush FIFOs and enable SSP */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1516 flush(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1517 writew((readw(SSP_CR1(pl022->virtbase)) | SSP_CR1_MASK_SSE),
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1518 SSP_CR1(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1519
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1520 dev_dbg(&pl022->adev->dev, "polling transfer ongoing ...\n");
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1521
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1522 timeout = jiffies + msecs_to_jiffies(SPI_POLLING_TIMEOUT);
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1523 while (pl022->tx < pl022->tx_end || pl022->rx < pl022->rx_end) {
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1524 time = jiffies;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1525 readwriter(pl022);
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1526 if (time_after(time, timeout)) {
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1527 dev_warn(&pl022->adev->dev,
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1528 "%s: timeout!\n", __func__);
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1529 message->state = STATE_TIMEOUT;
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1530 print_current_status(pl022);
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1531 goto out;
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1532 }
521999bd4a8c47a drivers/spi/amba-pl022.c Linus Walleij 2011-05-19 1533 cpu_relax();
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1534 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1535
25985edcedea639 drivers/spi/amba-pl022.c Lucas De Marchi 2011-03-30 1536 /* Update total byte transferred */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1537 message->actual_length += pl022->cur_transfer->len;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1538 /* Move to next transfer */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1539 message->state = next_transfer(pl022);
c0b07605f1a0285 drivers/spi/spi-pl022.c Fredrik Ternerot 2018-11-13 1540 if (message->state != STATE_DONE
c0b07605f1a0285 drivers/spi/spi-pl022.c Fredrik Ternerot 2018-11-13 1541 && pl022->cur_transfer->cs_change)
c0b07605f1a0285 drivers/spi/spi-pl022.c Fredrik Ternerot 2018-11-13 1542 pl022_cs_control(pl022, SSP_CHIP_DESELECT);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1543 }
a18c266f8e43004 drivers/spi/amba-pl022.c Magnus Templing 2011-05-19 1544 out:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1545 /* Handle end of message */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1546 if (message->state == STATE_DONE)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1547 message->status = 0;
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1548 else if (message->state == STATE_TIMEOUT)
7aef2b646b24247 drivers/spi/spi-pl022.c Jiwei Sun 2019-01-18 1549 message->status = -EAGAIN;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1550 else
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1551 message->status = -EIO;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1552
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1553 giveback(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1554 return;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1555 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1556
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1557 static int pl022_transfer_one_message(struct spi_master *master,
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1558 struct spi_message *msg)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1559 {
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1560 struct pl022 *pl022 = spi_master_get_devdata(master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1561
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1562 /* Initial message state */
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1563 pl022->cur_msg = msg;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1564 msg->state = STATE_START;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1565
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1566 pl022->cur_transfer = list_entry(msg->transfers.next,
f1e45f86ed93b9e drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1567 struct spi_transfer, transfer_list);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1568
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1569 /* Setup the SPI using the per chip configuration */
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1570 pl022->cur_chip = spi_get_ctldata(msg->spi);
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1571 pl022->cur_cs = pl022->chipselects[msg->spi->chip_select];
d4b6af2e0e29278 drivers/spi/spi-pl022.c Chris Blair 2011-11-04 1572
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1573 restore_state(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1574 flush(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1575
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1576 if (pl022->cur_chip->xfer_type == POLLING_TRANSFER)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1577 do_polling_transfer(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1578 else
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1579 do_interrupt_dma_transfer(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1580
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1581 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1582 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1583
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1584 static int pl022_unprepare_transfer_hardware(struct spi_master *master)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1585 {
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1586 struct pl022 *pl022 = spi_master_get_devdata(master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1587
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1588 /* nothing more to do - disable spi/ssp and power off */
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1589 writew((readw(SSP_CR1(pl022->virtbase)) &
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 1590 (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1591
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1592 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1593 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1594
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1595 static int verify_controller_parameters(struct pl022 *pl022,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1596 struct pl022_config_chip const *chip_info)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1597 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1598 if ((chip_info->iface < SSP_INTERFACE_MOTOROLA_SPI)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1599 || (chip_info->iface > SSP_INTERFACE_UNIDIRECTIONAL)) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1600 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1601 "interface is configured incorrectly\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1602 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1603 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1604 if ((chip_info->iface == SSP_INTERFACE_UNIDIRECTIONAL) &&
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1605 (!pl022->vendor->unidir)) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1606 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1607 "unidirectional mode not supported in this "
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1608 "hardware version\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1609 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1610 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1611 if ((chip_info->hierarchy != SSP_MASTER)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1612 && (chip_info->hierarchy != SSP_SLAVE)) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1613 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1614 "hierarchy is configured incorrectly\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1615 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1616 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1617 if ((chip_info->com_mode != INTERRUPT_TRANSFER)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1618 && (chip_info->com_mode != DMA_TRANSFER)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1619 && (chip_info->com_mode != POLLING_TRANSFER)) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1620 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1621 "Communication mode is configured incorrectly\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1622 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1623 }
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1624 switch (chip_info->rx_lev_trig) {
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1625 case SSP_RX_1_OR_MORE_ELEM:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1626 case SSP_RX_4_OR_MORE_ELEM:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1627 case SSP_RX_8_OR_MORE_ELEM:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1628 /* These are always OK, all variants can handle this */
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1629 break;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1630 case SSP_RX_16_OR_MORE_ELEM:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1631 if (pl022->vendor->fifodepth < 16) {
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1632 dev_err(&pl022->adev->dev,
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1633 "RX FIFO Trigger Level is configured incorrectly\n");
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1634 return -EINVAL;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1635 }
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1636 break;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1637 case SSP_RX_32_OR_MORE_ELEM:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1638 if (pl022->vendor->fifodepth < 32) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1639 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1640 "RX FIFO Trigger Level is configured incorrectly\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1641 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1642 }
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1643 break;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1644 default:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1645 dev_err(&pl022->adev->dev,
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1646 "RX FIFO Trigger Level is configured incorrectly\n");
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1647 return -EINVAL;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1648 }
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1649 switch (chip_info->tx_lev_trig) {
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1650 case SSP_TX_1_OR_MORE_EMPTY_LOC:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1651 case SSP_TX_4_OR_MORE_EMPTY_LOC:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1652 case SSP_TX_8_OR_MORE_EMPTY_LOC:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1653 /* These are always OK, all variants can handle this */
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1654 break;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1655 case SSP_TX_16_OR_MORE_EMPTY_LOC:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1656 if (pl022->vendor->fifodepth < 16) {
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1657 dev_err(&pl022->adev->dev,
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1658 "TX FIFO Trigger Level is configured incorrectly\n");
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1659 return -EINVAL;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1660 }
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1661 break;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1662 case SSP_TX_32_OR_MORE_EMPTY_LOC:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1663 if (pl022->vendor->fifodepth < 32) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1664 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1665 "TX FIFO Trigger Level is configured incorrectly\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1666 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1667 }
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1668 break;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1669 default:
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1670 dev_err(&pl022->adev->dev,
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1671 "TX FIFO Trigger Level is configured incorrectly\n");
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1672 return -EINVAL;
78b2b911bf70203 drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1673 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1674 if (chip_info->iface == SSP_INTERFACE_NATIONAL_MICROWIRE) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1675 if ((chip_info->ctrl_len < SSP_BITS_4)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1676 || (chip_info->ctrl_len > SSP_BITS_32)) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1677 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1678 "CTRL LEN is configured incorrectly\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1679 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1680 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1681 if ((chip_info->wait_state != SSP_MWIRE_WAIT_ZERO)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1682 && (chip_info->wait_state != SSP_MWIRE_WAIT_ONE)) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1683 dev_err(&pl022->adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1684 "Wait State is configured incorrectly\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1685 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1686 }
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1687 /* Half duplex is only available in the ST Micro version */
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1688 if (pl022->vendor->extended_cr) {
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1689 if ((chip_info->duplex !=
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1690 SSP_MICROWIRE_CHANNEL_FULL_DUPLEX)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1691 && (chip_info->duplex !=
4a4fd47155ac49b drivers/spi/amba-pl022.c Julia Lawall 2010-09-29 1692 SSP_MICROWIRE_CHANNEL_HALF_DUPLEX)) {
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1693 dev_err(&pl022->adev->dev,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1694 "Microwire duplex mode is configured incorrectly\n");
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1695 return -EINVAL;
4a4fd47155ac49b drivers/spi/amba-pl022.c Julia Lawall 2010-09-29 1696 }
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1697 } else {
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1698 if (chip_info->duplex != SSP_MICROWIRE_CHANNEL_FULL_DUPLEX)
5a1c98be1de165c drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1699 dev_err(&pl022->adev->dev,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1700 "Microwire half duplex mode requested,"
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1701 " but this is only available in the"
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1702 " ST version of PL022\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1703 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1704 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1705 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1706 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1707 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1708
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1709 static inline u32 spi_rate(u32 rate, u16 cpsdvsr, u16 scr)
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1710 {
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1711 return rate / (cpsdvsr * (1 + scr));
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1712 }
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1713
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1714 static int calculate_effective_freq(struct pl022 *pl022, int freq, struct
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1715 ssp_clock_params * clk_freq)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1716 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1717 /* Lets calculate the frequency parameters */
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1718 u16 cpsdvsr = CPSDVR_MIN, scr = SCR_MIN;
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1719 u32 rate, max_tclk, min_tclk, best_freq = 0, best_cpsdvsr = 0,
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1720 best_scr = 0, tmp, found = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1721
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1722 rate = clk_get_rate(pl022->clk);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1723 /* cpsdvscr = 2 & scr 0 */
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1724 max_tclk = spi_rate(rate, CPSDVR_MIN, SCR_MIN);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1725 /* cpsdvsr = 254 & scr = 255 */
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1726 min_tclk = spi_rate(rate, CPSDVR_MAX, SCR_MAX);
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1727
ea505bc99f77f3f drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1728 if (freq > max_tclk)
ea505bc99f77f3f drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1729 dev_warn(&pl022->adev->dev,
ea505bc99f77f3f drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1730 "Max speed that can be programmed is %d Hz, you requested %d\n",
ea505bc99f77f3f drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1731 max_tclk, freq);
ea505bc99f77f3f drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1732
ea505bc99f77f3f drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1733 if (freq < min_tclk) {
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1734 dev_err(&pl022->adev->dev,
ea505bc99f77f3f drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1735 "Requested frequency: %d Hz is less than minimum possible %d Hz\n",
ea505bc99f77f3f drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1736 freq, min_tclk);
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1737 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1738 }
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1739
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1740 /*
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1741 * best_freq will give closest possible available rate (<= requested
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1742 * freq) for all values of scr & cpsdvsr.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1743 */
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1744 while ((cpsdvsr <= CPSDVR_MAX) && !found) {
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1745 while (scr <= SCR_MAX) {
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1746 tmp = spi_rate(rate, cpsdvsr, scr);
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1747
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1748 if (tmp > freq) {
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1749 /* we need lower freq */
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1750 scr++;
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1751 continue;
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1752 }
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1753
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1754 /*
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1755 * If found exact value, mark found and break.
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1756 * If found more closer value, update and break.
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1757 */
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1758 if (tmp > best_freq) {
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1759 best_freq = tmp;
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1760 best_cpsdvsr = cpsdvsr;
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1761 best_scr = scr;
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1762
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1763 if (tmp == freq)
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1764 found = 1;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1765 }
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1766 /*
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1767 * increased scr will give lower rates, which are not
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1768 * required
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1769 */
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1770 break;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1771 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1772 cpsdvsr += 2;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1773 scr = SCR_MIN;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1774 }
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1775
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1776 WARN(!best_freq, "pl022: Matching cpsdvsr and scr not found for %d Hz rate \n",
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1777 freq);
5eb806a3a68920a drivers/spi/spi-pl022.c Viresh Kumar 2012-04-19 1778
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1779 clk_freq->cpsdvsr = (u8) (best_cpsdvsr & 0xFF);
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1780 clk_freq->scr = (u8) (best_scr & 0xFF);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1781 dev_dbg(&pl022->adev->dev,
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1782 "SSP Target Frequency is: %u, Effective Frequency is %u\n",
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1783 freq, best_freq);
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1784 dev_dbg(&pl022->adev->dev, "SSP cpsdvsr = %d, scr = %d\n",
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1785 clk_freq->cpsdvsr, clk_freq->scr);
0379b2a33a8a03d drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 1786
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1787 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1788 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1789
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1790 /*
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1791 * A piece of default chip info unless the platform
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1792 * supplies it.
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1793 */
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1794 static const struct pl022_config_chip pl022_default_chip_info = {
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1795 .com_mode = POLLING_TRANSFER,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1796 .iface = SSP_INTERFACE_MOTOROLA_SPI,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1797 .hierarchy = SSP_SLAVE,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1798 .slave_tx_disable = DO_NOT_DRIVE_TX,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1799 .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1800 .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1801 .ctrl_len = SSP_BITS_8,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1802 .wait_state = SSP_MWIRE_WAIT_ZERO,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1803 .duplex = SSP_MICROWIRE_CHANNEL_FULL_DUPLEX,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1804 };
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1805
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1806 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1807 * pl022_setup - setup function registered to SPI master framework
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1808 * @spi: spi device which is requesting setup
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1809 *
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1810 * This function is registered to the SPI framework for this SPI master
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1811 * controller. If it is the first time when setup is called by this device,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1812 * this function will initialize the runtime state for this chip and save
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1813 * the same in the device structure. Else it will update the runtime info
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1814 * with the updated chip info. Nothing is really being written to the
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1815 * controller hardware here, that is not done until the actual transfer
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1816 * commence.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1817 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1818 static int pl022_setup(struct spi_device *spi)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1819 {
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1820 struct pl022_config_chip const *chip_info;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1821 struct pl022_config_chip chip_info_dt;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1822 struct chip_data *chip;
c4a4784308f5cb8 drivers/spi/spi-pl022.c Jonas Aaberg 2011-02-28 1823 struct ssp_clock_params clk_freq = { .cpsdvsr = 0, .scr = 0};
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1824 int status = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1825 struct pl022 *pl022 = spi_master_get_devdata(spi->master);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1826 unsigned int bits = spi->bits_per_word;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1827 u32 tmp;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1828 struct device_node *np = spi->dev.of_node;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1829
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1830 if (!spi->max_speed_hz)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1831 return -EINVAL;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1832
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1833 /* Get controller_state if one is supplied */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1834 chip = spi_get_ctldata(spi);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1835
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1836 if (chip == NULL) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1837 chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL);
77538f4a98dc542 drivers/spi/spi-pl022.c Jingoo Han 2014-04-29 1838 if (!chip)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1839 return -ENOMEM;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1840 dev_dbg(&spi->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1841 "allocated memory for controller's runtime state\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1842 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1843
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1844 /* Get controller data if one is supplied */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1845 chip_info = spi->controller_data;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1846
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1847 if (chip_info == NULL) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1848 if (np) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1849 chip_info_dt = pl022_default_chip_info;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1850
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1851 chip_info_dt.hierarchy = SSP_MASTER;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1852 of_property_read_u32(np, "pl022,interface",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1853 &chip_info_dt.iface);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1854 of_property_read_u32(np, "pl022,com-mode",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1855 &chip_info_dt.com_mode);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1856 of_property_read_u32(np, "pl022,rx-level-trig",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1857 &chip_info_dt.rx_lev_trig);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1858 of_property_read_u32(np, "pl022,tx-level-trig",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1859 &chip_info_dt.tx_lev_trig);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1860 of_property_read_u32(np, "pl022,ctrl-len",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1861 &chip_info_dt.ctrl_len);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1862 of_property_read_u32(np, "pl022,wait-state",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1863 &chip_info_dt.wait_state);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1864 of_property_read_u32(np, "pl022,duplex",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1865 &chip_info_dt.duplex);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1866
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1867 chip_info = &chip_info_dt;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1868 } else {
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1869 chip_info = &pl022_default_chip_info;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1870 /* spi_board_info.controller_data not is supplied */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1871 dev_dbg(&spi->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1872 "using default controller_data settings\n");
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1873 }
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1874 } else
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1875 dev_dbg(&spi->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1876 "using user supplied controller_data settings\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1877
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1878 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1879 * We can override with custom divisors, else we use the board
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1880 * frequency setting
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1881 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1882 if ((0 == chip_info->clk_freq.cpsdvsr)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1883 && (0 == chip_info->clk_freq.scr)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1884 status = calculate_effective_freq(pl022,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1885 spi->max_speed_hz,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1886 &clk_freq);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1887 if (status < 0)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1888 goto err_config_params;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1889 } else {
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1890 memcpy(&clk_freq, &chip_info->clk_freq, sizeof(clk_freq));
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1891 if ((clk_freq.cpsdvsr % 2) != 0)
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1892 clk_freq.cpsdvsr =
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1893 clk_freq.cpsdvsr - 1;
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1894 }
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1895 if ((clk_freq.cpsdvsr < CPSDVR_MIN)
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1896 || (clk_freq.cpsdvsr > CPSDVR_MAX)) {
e3f88ae99609205 drivers/spi/amba-pl022.c Virupax Sadashivpetimath 2011-06-13 1897 status = -EINVAL;
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1898 dev_err(&spi->dev,
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1899 "cpsdvsr is configured incorrectly\n");
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1900 goto err_config_params;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1901 }
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1902
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1903 status = verify_controller_parameters(pl022, chip_info);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1904 if (status) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1905 dev_err(&spi->dev, "controller data is incorrect");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1906 goto err_config_params;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1907 }
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1908
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1909 pl022->rx_lev_trig = chip_info->rx_lev_trig;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1910 pl022->tx_lev_trig = chip_info->tx_lev_trig;
083be3f05371b8f drivers/spi/spi-pl022.c Linus Walleij 2011-06-16 1911
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1912 /* Now set controller state based on controller data */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1913 chip->xfer_type = chip_info->com_mode;
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1914 if (!gpio_is_valid(pl022->chipselects[spi->chip_select]))
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1915 dev_warn(&spi->dev,
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 1916 "invalid chip select\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1917
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1918 /* Check bits per word with vendor specific range */
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1919 if ((bits <= 3) || (bits > pl022->vendor->max_bpw)) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1920 status = -ENOTSUPP;
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1921 dev_err(&spi->dev, "illegal data size for this controller!\n");
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1922 dev_err(&spi->dev, "This controller can only handle 4 <= n <= %d bit words\n",
eb798c641a34ae9 drivers/spi/spi-pl022.c Vinit Shenoy 2012-04-17 1923 pl022->vendor->max_bpw);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1924 goto err_config_params;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1925 } else if (bits <= 8) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1926 dev_dbg(&spi->dev, "4 <= n <=8 bits per word\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1927 chip->n_bytes = 1;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1928 chip->read = READING_U8;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1929 chip->write = WRITING_U8;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1930 } else if (bits <= 16) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1931 dev_dbg(&spi->dev, "9 <= n <= 16 bits per word\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1932 chip->n_bytes = 2;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1933 chip->read = READING_U16;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1934 chip->write = WRITING_U16;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1935 } else {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1936 dev_dbg(&spi->dev, "17 <= n <= 32 bits per word\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1937 chip->n_bytes = 4;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1938 chip->read = READING_U32;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1939 chip->write = WRITING_U32;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1940 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1941
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1942 /* Now Initialize all register settings required for this chip */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1943 chip->cr0 = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1944 chip->cr1 = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1945 chip->dmacr = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1946 chip->cpsr = 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1947 if ((chip_info->com_mode == DMA_TRANSFER)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1948 && ((pl022->master_info)->enable_dma)) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1949 chip->enable_dma = true;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1950 dev_dbg(&spi->dev, "DMA mode set in controller state\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1951 SSP_WRITE_BITS(chip->dmacr, SSP_DMA_ENABLED,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1952 SSP_DMACR_MASK_RXDMAE, 0);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1953 SSP_WRITE_BITS(chip->dmacr, SSP_DMA_ENABLED,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1954 SSP_DMACR_MASK_TXDMAE, 1);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1955 } else {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 1956 chip->enable_dma = false;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1957 dev_dbg(&spi->dev, "DMA mode NOT set in controller state\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1958 SSP_WRITE_BITS(chip->dmacr, SSP_DMA_DISABLED,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1959 SSP_DMACR_MASK_RXDMAE, 0);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1960 SSP_WRITE_BITS(chip->dmacr, SSP_DMA_DISABLED,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1961 SSP_DMACR_MASK_TXDMAE, 1);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1962 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1963
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 1964 chip->cpsr = clk_freq.cpsdvsr;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 1965
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1966 /* Special setup for the ST micro extended control registers */
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1967 if (pl022->vendor->extended_cr) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1968 u32 etx;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1969
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1970 if (pl022->vendor->pl023) {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1971 /* These bits are only in the PL023 */
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1972 SSP_WRITE_BITS(chip->cr1, chip_info->clkdelay,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1973 SSP_CR1_MASK_FBCLKDEL_ST, 13);
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1974 } else {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1975 /* These bits are in the PL022 but not PL023 */
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1976 SSP_WRITE_BITS(chip->cr0, chip_info->duplex,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1977 SSP_CR0_MASK_HALFDUP_ST, 5);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1978 SSP_WRITE_BITS(chip->cr0, chip_info->ctrl_len,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1979 SSP_CR0_MASK_CSS_ST, 16);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1980 SSP_WRITE_BITS(chip->cr0, chip_info->iface,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1981 SSP_CR0_MASK_FRF_ST, 21);
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1982 SSP_WRITE_BITS(chip->cr1, chip_info->wait_state,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1983 SSP_CR1_MASK_MWAIT_ST, 6);
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1984 }
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1985 SSP_WRITE_BITS(chip->cr0, bits - 1,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 1986 SSP_CR0_MASK_DSS_ST, 0);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1987
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1988 if (spi->mode & SPI_LSB_FIRST) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1989 tmp = SSP_RX_LSB;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1990 etx = SSP_TX_LSB;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1991 } else {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1992 tmp = SSP_RX_MSB;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1993 etx = SSP_TX_MSB;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1994 }
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1995 SSP_WRITE_BITS(chip->cr1, tmp, SSP_CR1_MASK_RENDN_ST, 4);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 1996 SSP_WRITE_BITS(chip->cr1, etx, SSP_CR1_MASK_TENDN_ST, 5);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1997 SSP_WRITE_BITS(chip->cr1, chip_info->rx_lev_trig,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1998 SSP_CR1_MASK_RXIFLSEL_ST, 7);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 1999 SSP_WRITE_BITS(chip->cr1, chip_info->tx_lev_trig,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2000 SSP_CR1_MASK_TXIFLSEL_ST, 10);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2001 } else {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2002 SSP_WRITE_BITS(chip->cr0, bits - 1,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2003 SSP_CR0_MASK_DSS, 0);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2004 SSP_WRITE_BITS(chip->cr0, chip_info->iface,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2005 SSP_CR0_MASK_FRF, 4);
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2006 }
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2007
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2008 /* Stuff that is common for all versions */
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2009 if (spi->mode & SPI_CPOL)
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2010 tmp = SSP_CLK_POL_IDLE_HIGH;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2011 else
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2012 tmp = SSP_CLK_POL_IDLE_LOW;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2013 SSP_WRITE_BITS(chip->cr0, tmp, SSP_CR0_MASK_SPO, 6);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2014
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2015 if (spi->mode & SPI_CPHA)
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2016 tmp = SSP_CLK_SECOND_EDGE;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2017 else
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2018 tmp = SSP_CLK_FIRST_EDGE;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2019 SSP_WRITE_BITS(chip->cr0, tmp, SSP_CR0_MASK_SPH, 7);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2020
f9d629c737cb668 drivers/spi/amba-pl022.c Linus Walleij 2010-10-01 2021 SSP_WRITE_BITS(chip->cr0, clk_freq.scr, SSP_CR0_MASK_SCR, 8);
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2022 /* Loopback is available on all versions except PL023 */
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2023 if (pl022->vendor->loopback) {
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2024 if (spi->mode & SPI_LOOP)
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2025 tmp = LOOPBACK_ENABLED;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2026 else
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2027 tmp = LOOPBACK_DISABLED;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2028 SSP_WRITE_BITS(chip->cr1, tmp, SSP_CR1_MASK_LBM, 0);
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2029 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2030 SSP_WRITE_BITS(chip->cr1, SSP_DISABLED, SSP_CR1_MASK_SSE, 1);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2031 SSP_WRITE_BITS(chip->cr1, chip_info->hierarchy, SSP_CR1_MASK_MS, 2);
f1e45f86ed93b9e drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2032 SSP_WRITE_BITS(chip->cr1, chip_info->slave_tx_disable, SSP_CR1_MASK_SOD,
f1e45f86ed93b9e drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2033 3);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2034
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2035 /* Save controller_state */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2036 spi_set_ctldata(spi, chip);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2037 return status;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2038 err_config_params:
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2039 spi_set_ctldata(spi, NULL);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2040 kfree(chip);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2041 return status;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2042 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2043
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2044 /**
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2045 * pl022_cleanup - cleanup function registered to SPI master framework
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2046 * @spi: spi device which is requesting cleanup
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2047 *
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2048 * This function is registered to the SPI framework for this SPI master
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2049 * controller. It will free the runtime state of chip.
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2050 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2051 static void pl022_cleanup(struct spi_device *spi)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2052 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2053 struct chip_data *chip = spi_get_ctldata(spi);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2054
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2055 spi_set_ctldata(spi, NULL);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2056 kfree(chip);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2057 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2058
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2059 static struct pl022_ssp_controller *
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2060 pl022_platform_data_dt_get(struct device *dev)
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2061 {
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2062 struct device_node *np = dev->of_node;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2063 struct pl022_ssp_controller *pd;
849794c50b24b93 drivers/spi/spi-pl022.c Rabin Vincent 2017-04-06 2064 u32 tmp = 0;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2065
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2066 if (!np) {
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2067 dev_err(dev, "no dt node defined\n");
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2068 return NULL;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2069 }
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2070
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2071 pd = devm_kzalloc(dev, sizeof(struct pl022_ssp_controller), GFP_KERNEL);
77538f4a98dc542 drivers/spi/spi-pl022.c Jingoo Han 2014-04-29 2072 if (!pd)
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2073 return NULL;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2074
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2075 pd->bus_id = -1;
dbd897b9c6fac8b drivers/spi/spi-pl022.c Linus Walleij 2013-05-23 2076 pd->enable_dma = 1;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2077 of_property_read_u32(np, "num-cs", &tmp);
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2078 pd->num_chipselect = tmp;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2079 of_property_read_u32(np, "pl022,autosuspend-delay",
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2080 &pd->autosuspend_delay);
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2081 pd->rt = of_property_read_bool(np, "pl022,rt");
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2082
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2083 return pd;
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2084 }
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2085
fd4a319bc933ae9 drivers/spi/spi-pl022.c Grant Likely 2012-12-07 2086 static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2087 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2088 struct device *dev = &adev->dev;
8074cf063e410a2 drivers/spi/spi-pl022.c Jingoo Han 2013-07-30 2089 struct pl022_ssp_controller *platform_info =
8074cf063e410a2 drivers/spi/spi-pl022.c Jingoo Han 2013-07-30 2090 dev_get_platdata(&adev->dev);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2091 struct spi_master *master;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2092 struct pl022 *pl022 = NULL; /*Data for this driver */
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2093 struct device_node *np = adev->dev.of_node;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2094 int status = 0, i, num_cs;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2095
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2096 dev_info(&adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2097 "ARM PL022 driver, device ID: 0x%08x\n", adev->periphid);
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2098 if (!platform_info && IS_ENABLED(CONFIG_OF))
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2099 platform_info = pl022_platform_data_dt_get(dev);
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2100
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2101 if (!platform_info) {
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2102 dev_err(dev, "probe: no platform data defined\n");
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2103 return -ENODEV;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2104 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2105
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2106 if (platform_info->num_chipselect) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2107 num_cs = platform_info->num_chipselect;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2108 } else {
39a6ac11df6579d drivers/spi/spi-pl022.c Roland Stigge 2012-09-18 2109 dev_err(dev, "probe: no chip select defined\n");
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2110 return -ENODEV;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2111 }
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2112
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2113 /* Allocate master with space for data */
b4b8482690d97ea drivers/spi/spi-pl022.c Roland Stigge 2012-09-03 2114 master = spi_alloc_master(dev, sizeof(struct pl022));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2115 if (master == NULL) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2116 dev_err(&adev->dev, "probe - cannot alloc SPI master\n");
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2117 return -ENOMEM;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2118 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2119
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2120 pl022 = spi_master_get_devdata(master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2121 pl022->master = master;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2122 pl022->master_info = platform_info;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2123 pl022->adev = adev;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2124 pl022->vendor = id->data;
a86854d0c599b32 drivers/spi/spi-pl022.c Kees Cook 2018-06-12 2125 pl022->chipselects = devm_kcalloc(dev, num_cs, sizeof(int),
b4b8482690d97ea drivers/spi/spi-pl022.c Roland Stigge 2012-09-03 2126 GFP_KERNEL);
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2127 if (!pl022->chipselects) {
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2128 status = -ENOMEM;
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2129 goto err_no_mem;
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2130 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2131
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2132 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2133 * Bus Number Which has been Assigned to this SSP controller
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2134 * on this board
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2135 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2136 master->bus_num = platform_info->bus_id;
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 2137 master->use_gpio_descriptors;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2138 master->num_chipselect = num_cs;
6e5614b6476001a drivers/spi/spi-pl022.c Linus Walleij 2019-06-25 2139 master->set_cs = pl022_set_cs;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2140 master->cleanup = pl022_cleanup;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2141 master->setup = pl022_setup;
29b6e906a70a47c drivers/spi/spi-pl022.c Mark Brown 2013-07-28 2142 master->auto_runtime_pm = true;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2143 master->transfer_one_message = pl022_transfer_one_message;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2144 master->unprepare_transfer_hardware = pl022_unprepare_transfer_hardware;
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2145 master->rt = platform_info->rt;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2146 master->dev.of_node = dev->of_node;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2147
516843702bb5fd8 drivers/spi/spi-pl022.c Linus Walleij 2019-04-28 2148 if (pl022->vendor->internal_cs_ctrl) {
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2149 for (i = 0; i < num_cs; i++)
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2150 pl022->chipselects[i] = i;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2151 } else if (IS_ENABLED(CONFIG_OF)) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2152 for (i = 0; i < num_cs; i++) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2153 int cs_gpio = of_get_named_gpio(np, "cs-gpios", i);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2154
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2155 if (cs_gpio == -EPROBE_DEFER) {
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2156 status = -EPROBE_DEFER;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2157 goto err_no_gpio;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2158 }
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2159
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2160 pl022->chipselects[i] = cs_gpio;
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2161
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2162 if (gpio_is_valid(cs_gpio)) {
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2163 if (devm_gpio_request(dev, cs_gpio, "ssp-pl022"))
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2164 dev_err(&adev->dev,
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2165 "could not request %d gpio\n",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2166 cs_gpio);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2167 else if (gpio_direction_output(cs_gpio, 1))
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2168 dev_err(&adev->dev,
61e89e65e31516c drivers/spi/spi-pl022.c Roland Stigge 2014-09-09 2169 "could not set gpio %d as output\n",
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2170 cs_gpio);
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2171 }
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2172 }
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2173 }
f6f46de1063c882 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2174
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2175 /*
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2176 * Supports mode 0-3, loopback, and active low CS. Transfers are
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2177 * always MS bit first on the original pl022.
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2178 */
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2179 master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2180 if (pl022->vendor->extended_cr)
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2181 master->mode_bits |= SPI_LSB_FIRST;
bde435a9ca376d0 drivers/spi/amba-pl022.c Kevin Wells 2010-09-16 2182
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2183 dev_dbg(&adev->dev, "BUSNO: %d\n", master->bus_num);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2184
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2185 status = amba_request_regions(adev, NULL);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2186 if (status)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2187 goto err_no_ioregion;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2188
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2189 pl022->phybase = adev->res.start;
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2190 pl022->virtbase = devm_ioremap(dev, adev->res.start,
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2191 resource_size(&adev->res));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2192 if (pl022->virtbase == NULL) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2193 status = -ENOMEM;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2194 goto err_no_ioremap;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2195 }
2c067509a1e3540 drivers/spi/spi-pl022.c Jingoo Han 2013-10-11 2196 dev_info(&adev->dev, "mapped registers from %pa to %p\n",
7085f403517615c drivers/spi/spi-pl022.c Fabio Estevam 2013-08-21 2197 &adev->res.start, pl022->virtbase);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2198
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2199 pl022->clk = devm_clk_get(&adev->dev, NULL);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2200 if (IS_ERR(pl022->clk)) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2201 status = PTR_ERR(pl022->clk);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2202 dev_err(&adev->dev, "could not retrieve SSP/SPI bus clock\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2203 goto err_no_clk;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2204 }
7ff6bcf048e6a98 drivers/spi/spi-pl022.c Russell King 2011-09-22 2205
6cac167b826eced drivers/spi/spi-pl022.c Ulf Hansson 2014-02-04 2206 status = clk_prepare_enable(pl022->clk);
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2207 if (status) {
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2208 dev_err(&adev->dev, "could not enable SSP/SPI bus clock\n");
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2209 goto err_no_clk_en;
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2210 }
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2211
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2212 /* Initialize transfer pump */
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2213 tasklet_init(&pl022->pump_transfers, pump_transfers,
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2214 (unsigned long)pl022);
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2215
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2216 /* Disable SSP */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2217 writew((readw(SSP_CR1(pl022->virtbase)) & (~SSP_CR1_MASK_SSE)),
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2218 SSP_CR1(pl022->virtbase));
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2219 load_ssp_default_config(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2220
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2221 status = devm_request_irq(dev, adev->irq[0], pl022_interrupt_handler,
aeef9915b9a40d2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2222 0, "pl022", pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2223 if (status < 0) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2224 dev_err(&adev->dev, "probe - cannot get IRQ (%d)\n", status);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2225 goto err_no_irq;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2226 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2227
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2228 /* Get DMA channels, try autoconfiguration first */
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2229 status = pl022_dma_autoprobe(pl022);
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 2230 if (status == -EPROBE_DEFER) {
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 2231 dev_dbg(dev, "deferring probe to get DMA channel\n");
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 2232 goto err_no_irq;
f3d4bb3342630cd drivers/spi/spi-pl022.c Rabin Vincent 2015-11-23 2233 }
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2234
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2235 /* If that failed, use channels from platform_info */
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2236 if (status == 0)
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2237 platform_info->enable_dma = 1;
dc715452e914515 drivers/spi/spi-pl022.c Arnd Bergmann 2013-01-28 2238 else if (platform_info->enable_dma) {
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2239 status = pl022_dma_probe(pl022);
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2240 if (status != 0)
43c640157d4366a drivers/spi/amba-pl022.c Viresh Kumar 2011-05-16 2241 platform_info->enable_dma = 0;
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2242 }
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2243
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2244 /* Register with the SPI framework */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2245 amba_set_drvdata(adev, pl022);
35794a77168b739 drivers/spi/spi-pl022.c Jingoo Han 2013-09-24 2246 status = devm_spi_register_master(&adev->dev, master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2247 if (status != 0) {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2248 dev_err(&adev->dev,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2249 "probe - problem registering spi master\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2250 goto err_spi_register;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2251 }
25985edcedea639 drivers/spi/amba-pl022.c Lucas De Marchi 2011-03-30 2252 dev_dbg(dev, "probe succeeded\n");
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2253
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2254 /* let runtime pm put suspend */
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2255 if (platform_info->autosuspend_delay > 0) {
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2256 dev_info(&adev->dev,
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2257 "will use autosuspend for runtime pm, delay %dms\n",
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2258 platform_info->autosuspend_delay);
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2259 pm_runtime_set_autosuspend_delay(dev,
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2260 platform_info->autosuspend_delay);
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2261 pm_runtime_use_autosuspend(dev);
53e4acea0e819a6 drivers/spi/spi-pl022.c Chris Blair 2011-11-08 2262 }
0df349945752bf0 drivers/spi/spi-pl022.c Ulf Hansson 2012-10-17 2263 pm_runtime_put(dev);
0df349945752bf0 drivers/spi/spi-pl022.c Ulf Hansson 2012-10-17 2264
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2265 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2266
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2267 err_spi_register:
3e3ea716270dc64 drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2268 if (platform_info->enable_dma)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2269 pl022_dma_remove(pl022);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2270 err_no_irq:
6cac167b826eced drivers/spi/spi-pl022.c Ulf Hansson 2014-02-04 2271 clk_disable_unprepare(pl022->clk);
71e63e748ee6f4b drivers/spi/spi-pl022.c Ulf Hansson 2011-11-04 2272 err_no_clk_en:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2273 err_no_clk:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2274 err_no_ioremap:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2275 amba_release_regions(adev);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2276 err_no_ioregion:
6d3952a7dfa8091 drivers/spi/spi-pl022.c Roland Stigge 2012-08-22 2277 err_no_gpio:
73e3f1eb5188830 drivers/spi/spi-pl022.c Kiran Padwal 2014-09-18 2278 err_no_mem:
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2279 spi_master_put(master);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2280 return status;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2281 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2282
fd4a319bc933ae9 drivers/spi/spi-pl022.c Grant Likely 2012-12-07 2283 static int
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2284 pl022_remove(struct amba_device *adev)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2285 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2286 struct pl022 *pl022 = amba_get_drvdata(adev);
50658b6602dad6d drivers/spi/spi-pl022.c Linus Walleij 2011-08-02 2287
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2288 if (!pl022)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2289 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2290
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2291 /*
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2292 * undo pm_runtime_put() in probe. I assume that we're not
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2293 * accessing the primecell here.
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2294 */
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2295 pm_runtime_get_noresume(&adev->dev);
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2296
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2297 load_ssp_default_config(pl022);
3e3ea716270dc64 drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2298 if (pl022->master_info->enable_dma)
b1b6b9aa6fd32db drivers/spi/amba-pl022.c Linus Walleij 2010-09-29 2299 pl022_dma_remove(pl022);
3e3ea716270dc64 drivers/spi/spi-pl022.c Viresh Kumar 2011-08-10 2300
6cac167b826eced drivers/spi/spi-pl022.c Ulf Hansson 2014-02-04 2301 clk_disable_unprepare(pl022->clk);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2302 amba_release_regions(adev);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2303 tasklet_disable(&pl022->pump_transfers);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2304 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2305 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2306
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2307 #ifdef CONFIG_PM_SLEEP
6cfa6279edbffa9 drivers/spi/spi-pl022.c Peter Hüwe 2011-09-05 2308 static int pl022_suspend(struct device *dev)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2309 {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2310 struct pl022 *pl022 = dev_get_drvdata(dev);
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2311 int ret;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2312
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2313 ret = spi_master_suspend(pl022->master);
7c5d8a249acadc3 drivers/spi/spi-pl022.c Geert Uytterhoeven 2018-09-05 2314 if (ret)
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2315 return ret;
4964a26df72c4a8 drivers/spi/spi-pl022.c Ulf Hansson 2012-10-17 2316
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2317 ret = pm_runtime_force_suspend(dev);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2318 if (ret) {
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2319 spi_master_resume(pl022->master);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2320 return ret;
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2321 }
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2322
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2323 pinctrl_pm_select_sleep_state(dev);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2324
6cfa6279edbffa9 drivers/spi/spi-pl022.c Peter Hüwe 2011-09-05 2325 dev_dbg(dev, "suspended\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2326 return 0;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2327 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2328
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2329 static int pl022_resume(struct device *dev)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2330 {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2331 struct pl022 *pl022 = dev_get_drvdata(dev);
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2332 int ret;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2333
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2334 ret = pm_runtime_force_resume(dev);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2335 if (ret)
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2336 dev_err(dev, "problem resuming\n");
ada7aec7eec0ca2 drivers/spi/spi-pl022.c Linus Walleij 2012-09-26 2337
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2338 /* Start the queue running */
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2339 ret = spi_master_resume(pl022->master);
7c5d8a249acadc3 drivers/spi/spi-pl022.c Geert Uytterhoeven 2018-09-05 2340 if (!ret)
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2341 dev_dbg(dev, "resumed\n");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2342
ffbbdd21329f3e1 drivers/spi/spi-pl022.c Linus Walleij 2012-02-22 2343 return ret;
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2344 }
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2345 #endif
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2346
736198b0486c8d5 drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2347 #ifdef CONFIG_PM
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2348 static int pl022_runtime_suspend(struct device *dev)
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2349 {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2350 struct pl022 *pl022 = dev_get_drvdata(dev);
4f5e1b370845a0a drivers/spi/spi-pl022.c Patrice Chotard 2012-09-19 2351
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2352 clk_disable_unprepare(pl022->clk);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2353 pinctrl_pm_select_idle_state(dev);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2354
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2355 return 0;
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2356 }
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2357
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2358 static int pl022_runtime_resume(struct device *dev)
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2359 {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2360 struct pl022 *pl022 = dev_get_drvdata(dev);
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2361
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2362 pinctrl_pm_select_default_state(dev);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2363 clk_prepare_enable(pl022->clk);
84a5dc41f64faad drivers/spi/spi-pl022.c Ulf Hansson 2014-03-01 2364
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2365 return 0;
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2366 }
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2367 #endif
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2368
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2369 static const struct dev_pm_ops pl022_dev_pm_ops = {
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2370 SET_SYSTEM_SLEEP_PM_OPS(pl022_suspend, pl022_resume)
6ed23b806e73bdd drivers/spi/spi-pl022.c Rafael J. Wysocki 2014-12-04 2371 SET_RUNTIME_PM_OPS(pl022_runtime_suspend, pl022_runtime_resume, NULL)
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2372 };
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2373
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2374 static struct vendor_data vendor_arm = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2375 .fifodepth = 8,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2376 .max_bpw = 16,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2377 .unidir = false,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2378 .extended_cr = false,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2379 .pl023 = false,
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2380 .loopback = true,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2381 .internal_cs_ctrl = false,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2382 };
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2383
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2384 static struct vendor_data vendor_st = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2385 .fifodepth = 32,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2386 .max_bpw = 32,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2387 .unidir = false,
556f4aeb7d9dfac drivers/spi/amba-pl022.c Linus Walleij 2010-05-05 2388 .extended_cr = true,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2389 .pl023 = false,
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2390 .loopback = true,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2391 .internal_cs_ctrl = false,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2392 };
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2393
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2394 static struct vendor_data vendor_st_pl023 = {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2395 .fifodepth = 32,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2396 .max_bpw = 32,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2397 .unidir = false,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2398 .extended_cr = true,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2399 .pl023 = true,
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2400 .loopback = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2401 .internal_cs_ctrl = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2402 };
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2403
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2404 static struct vendor_data vendor_lsi = {
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2405 .fifodepth = 8,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2406 .max_bpw = 16,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2407 .unidir = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2408 .extended_cr = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2409 .pl023 = false,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2410 .loopback = true,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2411 .internal_cs_ctrl = true,
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2412 };
06fb01fd1dc624d drivers/spi/amba-pl022.c Philippe Langlais 2011-03-23 2413
5b8d5ad2308d2d5 drivers/spi/spi-pl022.c Arvind Yadav 2017-08-23 2414 static const struct amba_id pl022_ids[] = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2415 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2416 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2417 * ARM PL022 variant, this has a 16bit wide
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2418 * and 8 locations deep TX/RX FIFO
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2419 */
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2420 .id = 0x00041022,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2421 .mask = 0x000fffff,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2422 .data = &vendor_arm,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2423 },
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2424 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2425 /*
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2426 * ST Micro derivative, this has 32bit wide
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2427 * and 32 locations deep TX/RX FIFO
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2428 */
e89e04fcdce6146 drivers/spi/amba-pl022.c Srinidhi Kasagar 2009-10-05 2429 .id = 0x01080022,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2430 .mask = 0xffffffff,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2431 .data = &vendor_st,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2432 },
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2433 {
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2434 /*
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2435 * ST-Ericsson derivative "PL023" (this is not
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2436 * an official ARM number), this is a PL022 SSP block
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2437 * stripped to SPI mode only, it has 32bit wide
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2438 * and 32 locations deep TX/RX FIFO but no extended
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2439 * CR0/CR1 register
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2440 */
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2441 .id = 0x00080023,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2442 .mask = 0xffffffff,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2443 .data = &vendor_st_pl023,
781c7b129b1beb8 drivers/spi/amba-pl022.c Linus Walleij 2010-05-07 2444 },
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2445 {
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2446 /*
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2447 * PL022 variant that has a chip select control register whih
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2448 * allows control of 5 output signals nCS[0:4].
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2449 */
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2450 .id = 0x000b6022,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2451 .mask = 0x000fffff,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2452 .data = &vendor_lsi,
db4fa45ed3182d8 drivers/spi/spi-pl022.c Anders Berg 2014-09-17 2453 },
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2454 { 0, 0 },
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2455 };
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2456
7eeac71b9fc9b3d drivers/spi/spi-pl022.c Dave Martin 2011-10-05 2457 MODULE_DEVICE_TABLE(amba, pl022_ids);
7eeac71b9fc9b3d drivers/spi/spi-pl022.c Dave Martin 2011-10-05 2458
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2459 static struct amba_driver pl022_driver = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2460 .drv = {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2461 .name = "ssp-pl022",
92b97f0aaccbf9d drivers/spi/spi-pl022.c Russell King 2011-08-14 2462 .pm = &pl022_dev_pm_ops,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2463 },
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2464 .id_table = pl022_ids,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2465 .probe = pl022_probe,
fd4a319bc933ae9 drivers/spi/spi-pl022.c Grant Likely 2012-12-07 2466 .remove = pl022_remove,
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2467 };
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2468
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2469 static int __init pl022_init(void)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2470 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2471 return amba_driver_register(&pl022_driver);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2472 }
25c8e03bdb769df drivers/spi/amba-pl022.c Linus Walleij 2010-09-06 2473 subsys_initcall(pl022_init);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2474
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2475 static void __exit pl022_exit(void)
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2476 {
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2477 amba_driver_unregister(&pl022_driver);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2478 }
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2479 module_exit(pl022_exit);
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2480
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2481 MODULE_AUTHOR("Linus Walleij <linus.walleij@stericsson.com>");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2482 MODULE_DESCRIPTION("PL022 SSP Controller Driver");
b43d65f7e818485 drivers/spi/amba-pl022.c Linus Walleij 2009-06-09 2483 MODULE_LICENSE("GPL");
:::::: The code at line 442 was first introduced by commit
:::::: db4fa45ed3182d8206af241811dfc99369ffa849 spi: pl022: Add support for chip select extension
:::::: TO: Anders Berg <anders.berg@avagotech.com>
:::::: CC: Mark Brown <broonie@kernel.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 71383 bytes --]
^ permalink raw reply
* Re: [pinctrl:devel 16/46] drivers/pinctrl/bcm/pinctrl-bcm2835.c:995:10: error: incompatible types when assigning to type 'volatile struct SHIFTER' from type 'unsigned int'
From: Geert Uytterhoeven @ 2019-08-06 7:33 UTC (permalink / raw)
To: kbuild test robot
Cc: Stefan Wahren, kbuild-all, open list:GPIO SUBSYSTEM,
Linus Walleij, linux-m68k
In-Reply-To: <201908061021.pQY2TnEK%lkp@intel.com>
CC linux-m68k (shifter too generic a name?)
On Tue, Aug 6, 2019 at 5:00 AM kbuild test robot <lkp@intel.com> wrote:
>
> tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git devel
> head: d55b7fdd58ac12e76ef65979af4a13b9c15fc00d
> commit: e38a9a437fb93ddafab5030165e4c6a3a5021669 [16/46] pinctrl: bcm2835: Add support for BCM2711 pull-up functionality
> config: m68k-allmodconfig (attached as .config)
> compiler: m68k-linux-gcc (GCC) 7.4.0
> reproduce:
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> git checkout e38a9a437fb93ddafab5030165e4c6a3a5021669
> # save the attached .config to linux build tree
> GCC_VERSION=7.4.0 make.cross ARCH=m68k
>
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@intel.com>
>
> All error/warnings (new ones prefixed by >>):
>
> In file included from arch/m68k/include/asm/io_mm.h:32:0,
> from arch/m68k/include/asm/io.h:8,
> from include/linux/io.h:13,
> from include/linux/irq.h:20,
> from include/linux/gpio/driver.h:7,
> from drivers/pinctrl/bcm/pinctrl-bcm2835.c:17:
> drivers/pinctrl/bcm/pinctrl-bcm2835.c: In function 'bcm2711_pull_config_set':
> >> arch/m68k/include/asm/atarihw.h:190:22: error: expected identifier or '(' before 'volatile'
> # define shifter ((*(volatile struct SHIFTER *)SHF_BAS))
> ^
> >> drivers/pinctrl/bcm/pinctrl-bcm2835.c:990:6: note: in expansion of macro 'shifter'
> u32 shifter;
> ^~~~~~~
> >> arch/m68k/include/asm/atarihw.h:172:17: error: expected ')' before '(' token
> #define SHF_BAS (0xffff8200)
> ^
> >> arch/m68k/include/asm/atarihw.h:190:48: note: in expansion of macro 'SHF_BAS'
> # define shifter ((*(volatile struct SHIFTER *)SHF_BAS))
> ^~~~~~~
> >> drivers/pinctrl/bcm/pinctrl-bcm2835.c:990:6: note: in expansion of macro 'shifter'
> u32 shifter;
> ^~~~~~~
> >> drivers/pinctrl/bcm/pinctrl-bcm2835.c:995:10: error: incompatible types when assigning to type 'volatile struct SHIFTER' from type 'unsigned int'
> shifter = PUD_2711_REG_SHIFT(pin);
> ^
> >> drivers/pinctrl/bcm/pinctrl-bcm2835.c:998:27: error: invalid operands to binary << (have 'int' and 'volatile struct SHIFTER')
> value &= ~(PUD_2711_MASK << shifter);
> ^~
> >> drivers/pinctrl/bcm/pinctrl-bcm2835.c:999:16: error: invalid operands to binary << (have 'unsigned int' and 'volatile struct SHIFTER')
> value |= (arg << shifter);
> ^~
> --
> In file included from arch/m68k/include/asm/io_mm.h:32:0,
> from arch/m68k/include/asm/io.h:8,
> from include/linux/io.h:13,
> from include/linux/irq.h:20,
> from include/linux/gpio/driver.h:7,
> from drivers/pinctrl//bcm/pinctrl-bcm2835.c:17:
> drivers/pinctrl//bcm/pinctrl-bcm2835.c: In function 'bcm2711_pull_config_set':
> >> arch/m68k/include/asm/atarihw.h:190:22: error: expected identifier or '(' before 'volatile'
> # define shifter ((*(volatile struct SHIFTER *)SHF_BAS))
> ^
> drivers/pinctrl//bcm/pinctrl-bcm2835.c:990:6: note: in expansion of macro 'shifter'
> u32 shifter;
> ^~~~~~~
> >> arch/m68k/include/asm/atarihw.h:172:17: error: expected ')' before '(' token
> #define SHF_BAS (0xffff8200)
> ^
> >> arch/m68k/include/asm/atarihw.h:190:48: note: in expansion of macro 'SHF_BAS'
> # define shifter ((*(volatile struct SHIFTER *)SHF_BAS))
> ^~~~~~~
> drivers/pinctrl//bcm/pinctrl-bcm2835.c:990:6: note: in expansion of macro 'shifter'
> u32 shifter;
> ^~~~~~~
> drivers/pinctrl//bcm/pinctrl-bcm2835.c:995:10: error: incompatible types when assigning to type 'volatile struct SHIFTER' from type 'unsigned int'
> shifter = PUD_2711_REG_SHIFT(pin);
> ^
> drivers/pinctrl//bcm/pinctrl-bcm2835.c:998:27: error: invalid operands to binary << (have 'int' and 'volatile struct SHIFTER')
> value &= ~(PUD_2711_MASK << shifter);
> ^~
> drivers/pinctrl//bcm/pinctrl-bcm2835.c:999:16: error: invalid operands to binary << (have 'unsigned int' and 'volatile struct SHIFTER')
> value |= (arg << shifter);
> ^~
>
> vim +995 drivers/pinctrl/bcm/pinctrl-bcm2835.c
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
^ permalink raw reply
* Re: [PATCH RFC 1/7] pinctrl: sh-pfc: add new flags into struct sh_pfc_pin_config
From: Geert Uytterhoeven @ 2019-08-06 8:46 UTC (permalink / raw)
To: Yoshihiro Shimoda
Cc: Linus Walleij, Geert Uytterhoeven, Thierry Reding, Rob Herring,
Mark Rutland, open list:GPIO SUBSYSTEM, Linux PWM List,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux-Renesas
In-Reply-To: <1562576868-8124-2-git-send-email-yoshihiro.shimoda.uh@renesas.com>
On Mon, Jul 8, 2019 at 11:08 AM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> To clean/modify the code up later, this patch just adds new flags
> "mux_set" and "gpio_enabled" into the struct sh_pfc_pin_config.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply
* Re: [PATCH RFC 2/7] pinctrl: sh-pfc: remove incomplete flag "cfg->type"
From: Geert Uytterhoeven @ 2019-08-06 8:49 UTC (permalink / raw)
To: Yoshihiro Shimoda
Cc: Linus Walleij, Geert Uytterhoeven, thierry.reding@gmail.com,
Rob Herring, Mark Rutland, open list:GPIO SUBSYSTEM,
linux-pwm@vger.kernel.org,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux-Renesas
In-Reply-To: <TYAPR01MB4544031C6A027A3690FFFB77D8DD0@TYAPR01MB4544.jpnprd01.prod.outlook.com>
Hi Shimoda-san,
On Mon, Jul 29, 2019 at 7:16 AM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> > From: Linus Walleij, Sent: Monday, July 29, 2019 8:02 AM
> >
> > On Mon, Jul 8, 2019 at 11:08 AM Yoshihiro Shimoda
> > <yoshihiro.shimoda.uh@renesas.com> wrote:
> >
> > > The old commit c58d9c1b26e3 ("sh-pfc: Implement generic pinconf
> > > support") broke the cfg->type flag to PINMUX_TYPE_FUNCTION because
> > > sh_pfc_pinconf_set() didn't call sh_pfc_reconfig_pin().
> > > Now if we fix the cfg->type condition, it gets worse because:
> > > - Some drivers might be deferred so that .set_mux() will be called
> > > multiple times.
> > > - In such the case, the sh-pfc driver returns -EBUSY even if
> > > the group is the same, and then that driver fails to probe.
> > >
> > > Since the pinctrl subsystem already has such conditions according
> > > to @set_mux and @gpio_request_enable, this patch just remove
> > > the incomplete flag from sh-pfc/pinctrl.c.
> > >
> > > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> >
> > This looks like it should have a Fixes: tag as well.
>
> I got it. The Fixes tag should be:
>
> Fixes: c58d9c1b26e3 ("sh-pfc: Implement generic pinconf support")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> > Geert will decide what to do with this.
>
> I got it.
>
> > Can all the pinctrl patches be applied independently of the other
> > changes so Geert can apply and send me those patches in his pull
> > requests?
>
> The pinctrl patches (1/7 through 3/7) can be applied on next-20190726
> so I think Geert can apply these patches into his repo.
Looks mostly OK to me (I have some comments on 3/7).
I'll apply it to my local tree, so it will receive some testing on all
boards I have.
Thanks!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply
* Re: [PATCH RFC 3/7] pinctrl: sh-pfc: Rollback to mux if requires when the gpio is freed
From: Geert Uytterhoeven @ 2019-08-06 9:02 UTC (permalink / raw)
To: Yoshihiro Shimoda
Cc: Linus Walleij, Geert Uytterhoeven, Thierry Reding, Rob Herring,
Mark Rutland, open list:GPIO SUBSYSTEM, Linux PWM List,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux-Renesas
In-Reply-To: <1562576868-8124-4-git-send-email-yoshihiro.shimoda.uh@renesas.com>
Hi Shimoda-san,
On Mon, Jul 8, 2019 at 11:08 AM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> R-Car PWM controller requires the gpio to output zero duty,
> this patch allows to roll it back from gpio to mux when the gpio
> is freed.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Thanks for your patch!
> --- a/drivers/pinctrl/sh-pfc/pinctrl.c
> +++ b/drivers/pinctrl/sh-pfc/pinctrl.c
> @@ -26,6 +26,7 @@
> #include "../pinconf.h"
>
> struct sh_pfc_pin_config {
> + unsigned int mux_mark;
Due to padding, adding this field will increase memory consumption by
6 bytes per pin.
Probably sh_pfc_pin_group.{pins,mux} should be changed from unsigned int
to u16, but that's out of scope for this patch.
> bool mux_set;
> bool gpio_enabled;
> };
> @@ -353,6 +354,15 @@ static int sh_pfc_func_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
> spin_lock_irqsave(&pfc->lock, flags);
>
> for (i = 0; i < grp->nr_pins; ++i) {
> + int idx = sh_pfc_get_pin_index(pfc, grp->pins[i]);
> + struct sh_pfc_pin_config *cfg = &pmx->configs[idx];
> +
> + /*
> + * This doesn't assume the order which gpios are enabled
> + * and then mux is set.
I'm sorry, I don't understand what you mean?
Can you please reword or elaborate?
> + */
> + WARN_ON(cfg->gpio_enabled);
Can this actually happen?
Should this cause a failure instead?
> +
> ret = sh_pfc_config_mux(pfc, grp->mux[i], PINMUX_TYPE_FUNCTION);
> if (ret < 0)
> goto done;
> @@ -364,6 +374,7 @@ static int sh_pfc_func_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
> struct sh_pfc_pin_config *cfg = &pmx->configs[idx];
>
> cfg->mux_set = true;
> + cfg->mux_mark = grp->mux[i];
> }
>
> done:
> @@ -417,6 +428,9 @@ static void sh_pfc_gpio_disable_free(struct pinctrl_dev *pctldev,
>
> spin_lock_irqsave(&pfc->lock, flags);
> cfg->gpio_enabled = false;
> + /* If mux is already set, this configure it here */
configures
> + if (cfg->mux_set)
> + sh_pfc_config_mux(pfc, cfg->mux_mark, PINMUX_TYPE_FUNCTION);
Have you considered the case where more than one pin of a pinmux group
was used as a GPIO? In that case sh_pfc_gpio_disable_free() will be called
multiple times, possibly with the same mux_mark.
I don't think this will cause issues, though.
> spin_unlock_irqrestore(&pfc->lock, flags);
> }
Thanks!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply
* Re: [PATCH RFC 5/7] pwm: rcar: remove a redundant condition in rcar_pwm_apply()
From: Geert Uytterhoeven @ 2019-08-06 9:05 UTC (permalink / raw)
To: Yoshihiro Shimoda
Cc: Linus Walleij, Geert Uytterhoeven, Thierry Reding, Rob Herring,
Mark Rutland, open list:GPIO SUBSYSTEM, Linux PWM List,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux-Renesas
In-Reply-To: <1562576868-8124-6-git-send-email-yoshihiro.shimoda.uh@renesas.com>
Hi Shimoda-san,
On Mon, Jul 8, 2019 at 11:08 AM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> Since the rcar_pwm_apply() has already check whehter state->enabled
> is not set or not, this patch removes a redundant condition.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
This is completely independent from the rest of the series, and can be applied
immediately, right?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply
* Re: [PATCH RFC 4/7] dt-bindings: pwm: rcar: Add specific gpios property to output duty zero
From: Geert Uytterhoeven @ 2019-08-06 9:21 UTC (permalink / raw)
To: Yoshihiro Shimoda
Cc: Linus Walleij, Geert Uytterhoeven, Thierry Reding, Rob Herring,
Mark Rutland, open list:GPIO SUBSYSTEM, Linux PWM List,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux-Renesas
In-Reply-To: <1562576868-8124-5-git-send-email-yoshihiro.shimoda.uh@renesas.com>
Hi Shimoda-san,
On Mon, Jul 8, 2019 at 11:08 AM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> The R-Car SoCs PWM Timer cannot output duty zero. So, this patch
> adds a specific gpio property to output it.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Thanks for your patch!
> --- a/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.txt
> +++ b/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.txt
> @@ -26,6 +26,9 @@ Required Properties:
> - pinctrl-0: phandle, referring to a default pin configuration node.
> - pinctrl-names: Set to "default".
>
> +Optional properties:
> +- renesas,duty-zero-gpios: Specify GPIO for outputting duty zero.
> +
> Example: R8A7743 (RZ/G1M) PWM Timer node
>
> pwm0: pwm@e6e30000 {
I'm not so fond of adding a property to specify this explicitly: the PFC
driver already knows the mapping from the PWM output pin to the GPIO
number. However, I agree it is not easy to obtain this in a generic way.
For a PWM block with a single pin, it's easy: the pin you want to switch
between GPIO and pin function is the single pin in the single pin
control group specified in the board DT.
For blocks with multiple pins (e.g. SPI, UART), it is more complex, and
depends on the granularity of the pin control groups.
E.g. for UART, Renesas SoCs typically use 3 pin control groups ("data"
for RXD/TXD, "ctrl" for RTS/CTS, and "clk" for clock), and the pin
control driver (at least for sh-pfc) does not know which pin corresponds
to which GPIO inside each group. Perhaps this information should be
added, with an API to retrieve it?
Anyone who has a good suggestion?
Thanks!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply
* Re: [PATCH RFC 2/7] pinctrl: sh-pfc: remove incomplete flag "cfg->type"
From: Geert Uytterhoeven @ 2019-08-06 9:23 UTC (permalink / raw)
To: Yoshihiro Shimoda
Cc: Linus Walleij, Geert Uytterhoeven, Thierry Reding, Rob Herring,
Mark Rutland, open list:GPIO SUBSYSTEM, Linux PWM List,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux-Renesas
In-Reply-To: <1562576868-8124-3-git-send-email-yoshihiro.shimoda.uh@renesas.com>
Hi Shimoda-san,
On Mon, Jul 8, 2019 at 11:08 AM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> The old commit c58d9c1b26e3 ("sh-pfc: Implement generic pinconf
> support") broke the cfg->type flag to PINMUX_TYPE_FUNCTION because
> sh_pfc_pinconf_set() didn't call sh_pfc_reconfig_pin().
> Now if we fix the cfg->type condition, it gets worse because:
> - Some drivers might be deferred so that .set_mux() will be called
> multiple times.
> - In such the case, the sh-pfc driver returns -EBUSY even if
> the group is the same, and then that driver fails to probe.
>
> Since the pinctrl subsystem already has such conditions according
> to @set_mux and @gpio_request_enable, this patch just remove
> the incomplete flag from sh-pfc/pinctrl.c.
Do we need to set sh_pfc_pinmux_ops.strict = true?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply
* Re: [PATCH v1] pinctrl: intel: Use NSEC_PER_USEC for debounce calculus
From: Mika Westerberg @ 2019-08-06 10:14 UTC (permalink / raw)
To: Andy Shevchenko; +Cc: Linus Walleij, linux-gpio
In-Reply-To: <20190723155431.65095-1-andriy.shevchenko@linux.intel.com>
On Tue, Jul 23, 2019 at 06:54:31PM +0300, Andy Shevchenko wrote:
> Replace hard coded constants with self-explanatory names, i.e.
> use NSEC_PER_USEC for debounce calculus.
>
> While here, add a unit suffix to debounce period constant.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/pinctrl/intel/pinctrl-intel.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
> index 3a7876efd4a6..99c5bca789eb 100644
> --- a/drivers/pinctrl/intel/pinctrl-intel.c
> +++ b/drivers/pinctrl/intel/pinctrl-intel.c
> @@ -8,12 +8,13 @@
> */
>
> #include <linux/acpi.h>
> -#include <linux/module.h>
> #include <linux/interrupt.h>
> #include <linux/gpio/driver.h>
> #include <linux/log2.h>
> +#include <linux/module.h>
> #include <linux/platform_device.h>
> #include <linux/property.h>
> +#include <linux/time.h>
>
> #include <linux/pinctrl/pinctrl.h>
> #include <linux/pinctrl/pinmux.h>
> @@ -71,7 +72,7 @@
> #define PADCFG2_DEBOUNCE_SHIFT 1
> #define PADCFG2_DEBOUNCE_MASK GENMASK(4, 1)
>
> -#define DEBOUNCE_PERIOD 31250 /* ns */
> +#define DEBOUNCE_PERIOD_NS 31250
Should this be called DEBOUNCE_PERIOD_NSEC to be consistent with
NSEC_PER_USEC?
Otherwise looks good.
>
> struct intel_pad_context {
> u32 padcfg0;
> @@ -566,7 +567,7 @@ static int intel_config_get(struct pinctrl_dev *pctldev, unsigned int pin,
> return -EINVAL;
>
> v = (v & PADCFG2_DEBOUNCE_MASK) >> PADCFG2_DEBOUNCE_SHIFT;
> - arg = BIT(v) * DEBOUNCE_PERIOD / 1000;
> + arg = BIT(v) * DEBOUNCE_PERIOD_NS / NSEC_PER_USEC;
>
> break;
> }
> @@ -683,7 +684,7 @@ static int intel_config_set_debounce(struct intel_pinctrl *pctrl,
> if (debounce) {
> unsigned long v;
>
> - v = order_base_2(debounce * 1000 / DEBOUNCE_PERIOD);
> + v = order_base_2(debounce * NSEC_PER_USEC / DEBOUNCE_PERIOD_NS);
> if (v < 3 || v > 15) {
> ret = -EINVAL;
> goto exit_unlock;
> --
> 2.20.1
^ permalink raw reply
* Re: [PATCH v1] pinctrl: intel: Simplify offset validation in intel_get_padcfg()
From: Mika Westerberg @ 2019-08-06 10:16 UTC (permalink / raw)
To: Andy Shevchenko; +Cc: Linus Walleij, linux-gpio
In-Reply-To: <20190723155514.65177-1-andriy.shevchenko@linux.intel.com>
On Tue, Jul 23, 2019 at 06:55:14PM +0300, Andy Shevchenko wrote:
> There is more generic and simpler validation just against the nregs.
> Using it allows to drop customization from the intel_get_padcfg().
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
^ permalink raw reply
* Re: [PATCH v1 1/8] pinctrl: broxton: Provide Interrupt Status register offset
From: Mika Westerberg @ 2019-08-06 10:30 UTC (permalink / raw)
To: Andy Shevchenko; +Cc: Linus Walleij, linux-gpio
In-Reply-To: <20190723155633.65232-1-andriy.shevchenko@linux.intel.com>
On Tue, Jul 23, 2019 at 06:56:26PM +0300, Andy Shevchenko wrote:
> Since some of the GPIO controllers use different Interrupt Status offset,
> it make sense to provide it explicitly in the driver.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
For this and the rest of the patches in this series,
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
^ permalink raw reply
* Re: [PATCH v1] pinctrl: baytrail: Re-use data structures from pinctrl-intel.h (part 2)
From: Mika Westerberg @ 2019-08-06 10:44 UTC (permalink / raw)
To: Andy Shevchenko; +Cc: linux-gpio, Linus Walleij
In-Reply-To: <20190726201636.53129-1-andriy.shevchenko@linux.intel.com>
On Fri, Jul 26, 2019 at 11:16:36PM +0300, Andy Shevchenko wrote:
> We have some data structures duplicated across the drivers.
> Let's deduplicate them by using ones that being provided by
> pinctrl-intel.h.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
^ permalink raw reply
* Re: [PATCH v1] pinctrl: intel: Allow to request locked pins
From: Mika Westerberg @ 2019-08-06 11:01 UTC (permalink / raw)
To: Andy Shevchenko; +Cc: linux-gpio, Linus Walleij
In-Reply-To: <20190726200830.52728-1-andriy.shevchenko@linux.intel.com>
On Fri, Jul 26, 2019 at 11:08:30PM +0300, Andy Shevchenko wrote:
> Some firmwares would like to protect pins from being modified by OS
> and at the same time provide them to OS as a resource. So, the driver
> in such circumstances may request pin and may not change its state.
This is definitely good idea.
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/pinctrl/intel/pinctrl-intel.c | 55 +++++++++++++++++++--------
> 1 file changed, 39 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
> index 3a945997b8eb..567fe43b238f 100644
> --- a/drivers/pinctrl/intel/pinctrl-intel.c
> +++ b/drivers/pinctrl/intel/pinctrl-intel.c
> @@ -220,22 +220,30 @@ static bool intel_pad_acpi_mode(struct intel_pinctrl *pctrl, unsigned int pin)
> return !(readl(hostown) & BIT(gpp_offset));
> }
>
> -static bool intel_pad_locked(struct intel_pinctrl *pctrl, unsigned int pin)
> +enum {
> + PAD_UNLOCKED = 0,
> + PAD_LOCKED = 1,
> + PAD_LOCKED_TX = 2,
> + PAD_LOCKED_FULL = PAD_LOCKED | PAD_LOCKED_TX,
> +};
> +
> +static int intel_pad_locked(struct intel_pinctrl *pctrl, unsigned int pin)
> {
> struct intel_community *community;
> const struct intel_padgroup *padgrp;
> unsigned int offset, gpp_offset;
> u32 value;
> + int ret = PAD_UNLOCKED;
>
> community = intel_get_community(pctrl, pin);
> if (!community)
> - return true;
> + return PAD_LOCKED_FULL;
> if (!community->padcfglock_offset)
> - return false;
> + return PAD_UNLOCKED;
>
> padgrp = intel_community_get_padgroup(community, pin);
> if (!padgrp)
> - return true;
> + return PAD_LOCKED_FULL;
>
> gpp_offset = padgroup_offset(padgrp, pin);
>
> @@ -244,23 +252,27 @@ static bool intel_pad_locked(struct intel_pinctrl *pctrl, unsigned int pin)
> * the pad is considered unlocked. Any other case means that it is
> * either fully or partially locked and we don't touch it.
I think you should update the above comment as well.
> */
> - offset = community->padcfglock_offset + padgrp->reg_num * 8;
> + offset = community->padcfglock_offset + 0 + padgrp->reg_num * 8;
> value = readl(community->regs + offset);
> if (value & BIT(gpp_offset))
> - return true;
> + ret |= PAD_LOCKED;
>
> offset = community->padcfglock_offset + 4 + padgrp->reg_num * 8;
> value = readl(community->regs + offset);
> if (value & BIT(gpp_offset))
> - return true;
> + ret |= PAD_LOCKED_TX;
>
> - return false;
> + return ret;
> +}
> +
> +static bool intel_pad_is_unlocked(struct intel_pinctrl *pctrl, unsigned int pin)
> +{
> + return (intel_pad_locked(pctrl, pin) & PAD_LOCKED) == PAD_UNLOCKED;
> }
>
> static bool intel_pad_usable(struct intel_pinctrl *pctrl, unsigned int pin)
> {
> - return intel_pad_owned_by_host(pctrl, pin) &&
> - !intel_pad_locked(pctrl, pin);
> + return intel_pad_owned_by_host(pctrl, pin) && intel_pad_is_unlocked(pctrl, pin);
> }
>
> static int intel_get_groups_count(struct pinctrl_dev *pctldev)
> @@ -294,7 +306,8 @@ static void intel_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
> struct intel_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> void __iomem *padcfg;
> u32 cfg0, cfg1, mode;
> - bool locked, acpi;
> + int locked;
> + bool acpi;
>
> if (!intel_pad_owned_by_host(pctrl, pin)) {
> seq_puts(s, "not available");
> @@ -322,11 +335,16 @@ static void intel_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
>
> if (locked || acpi) {
> seq_puts(s, " [");
> - if (locked) {
> + if (locked)
> seq_puts(s, "LOCKED");
> - if (acpi)
> - seq_puts(s, ", ");
> - }
> + if ((locked & PAD_LOCKED_FULL) == PAD_LOCKED_TX)
> + seq_puts(s, " TX");
> + else if ((locked & PAD_LOCKED_FULL) == PAD_LOCKED_FULL)
> + seq_puts(s, " FULL");
> +
> + if (locked && acpi)
> + seq_puts(s, ", ");
> +
> if (acpi)
> seq_puts(s, "ACPI");
> seq_puts(s, "]");
> @@ -448,11 +466,16 @@ static int intel_gpio_request_enable(struct pinctrl_dev *pctldev,
>
> raw_spin_lock_irqsave(&pctrl->lock, flags);
>
> - if (!intel_pad_usable(pctrl, pin)) {
> + if (!intel_pad_owned_by_host(pctrl, pin)) {
> raw_spin_unlock_irqrestore(&pctrl->lock, flags);
> return -EBUSY;
> }
>
> + if (!intel_pad_is_unlocked(pctrl, pin)) {
> + raw_spin_unlock_irqrestore(&pctrl->lock, flags);
> + return 0;
Hmm, if I'm reading this right it still does not allow requesting locked
pins. What I'm missing here?
> + }
> +
> padcfg0 = intel_get_padcfg(pctrl, pin, PADCFG0);
> intel_gpio_set_gpio_mode(padcfg0);
> /* Disable TX buffer and enable RX (this will be input) */
> --
> 2.20.1
^ permalink raw reply
* RE: [PATCH RFC 3/7] pinctrl: sh-pfc: Rollback to mux if requires when the gpio is freed
From: Yoshihiro Shimoda @ 2019-08-06 11:38 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Linus Walleij, Geert Uytterhoeven, Thierry Reding, Rob Herring,
Mark Rutland, open list:GPIO SUBSYSTEM, Linux PWM List,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux-Renesas
In-Reply-To: <CAMuHMdUAVGbvn0D=UkqhY6RpO70MR-4GBC8i931a+fV9f6+njg@mail.gmail.com>
Hi Geert-san,
Thank you for your review!
> From: Geert Uytterhoeven, Sent: Tuesday, August 6, 2019 6:03 PM
>
> Hi Shimoda-san,
>
> On Mon, Jul 8, 2019 at 11:08 AM Yoshihiro Shimoda
> <yoshihiro.shimoda.uh@renesas.com> wrote:
> > R-Car PWM controller requires the gpio to output zero duty,
> > this patch allows to roll it back from gpio to mux when the gpio
> > is freed.
> >
> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
>
> Thanks for your patch!
>
> > --- a/drivers/pinctrl/sh-pfc/pinctrl.c
> > +++ b/drivers/pinctrl/sh-pfc/pinctrl.c
> > @@ -26,6 +26,7 @@
> > #include "../pinconf.h"
> >
> > struct sh_pfc_pin_config {
> > + unsigned int mux_mark;
>
> Due to padding, adding this field will increase memory consumption by
> 6 bytes per pin.
I see.
> Probably sh_pfc_pin_group.{pins,mux} should be changed from unsigned int
> to u16, but that's out of scope for this patch.
I got it.
> > bool mux_set;
> > bool gpio_enabled;
> > };
> > @@ -353,6 +354,15 @@ static int sh_pfc_func_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
> > spin_lock_irqsave(&pfc->lock, flags);
> >
> > for (i = 0; i < grp->nr_pins; ++i) {
> > + int idx = sh_pfc_get_pin_index(pfc, grp->pins[i]);
> > + struct sh_pfc_pin_config *cfg = &pmx->configs[idx];
> > +
> > + /*
> > + * This doesn't assume the order which gpios are enabled
> > + * and then mux is set.
>
> I'm sorry, I don't understand what you mean?
> Can you please reword or elaborate?
I was also difficult to remember what I meant...
Anyway, this meant,
1) if a device has the default pinctrl-0 property, the set_mux() ops is called
before the device driver's probe() function is called by pinctrl_bind_pins() first,
2) so that any device drivers cannot call gpiod_get() before the 1).
However, this comments don't cover an imbalance pinctrl/gpio handling.
For example (as pseudo):
- SCIF driver uses SCIF2 pinctrl,
- but, IOMMU driver gets the SCIF2 pins before SCIF driver is probed.
So, I'd like to revise the comments as following. What do you think?
--
This driver cannot manage both gpio and mux when the gpio pin
is already enabled. So, this function failed.
--
> > + */
> > + WARN_ON(cfg->gpio_enabled);
>
> Can this actually happen?
This cannot happen actually.
> Should this cause a failure instead?
I think so.
> > +
> > ret = sh_pfc_config_mux(pfc, grp->mux[i], PINMUX_TYPE_FUNCTION);
> > if (ret < 0)
> > goto done;
> > @@ -364,6 +374,7 @@ static int sh_pfc_func_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
> > struct sh_pfc_pin_config *cfg = &pmx->configs[idx];
> >
> > cfg->mux_set = true;
> > + cfg->mux_mark = grp->mux[i];
> > }
> >
> > done:
> > @@ -417,6 +428,9 @@ static void sh_pfc_gpio_disable_free(struct pinctrl_dev *pctldev,
> >
> > spin_lock_irqsave(&pfc->lock, flags);
> > cfg->gpio_enabled = false;
> > + /* If mux is already set, this configure it here */
>
> configures
Oops! I'll fix it.
> > + if (cfg->mux_set)
> > + sh_pfc_config_mux(pfc, cfg->mux_mark, PINMUX_TYPE_FUNCTION);
>
> Have you considered the case where more than one pin of a pinmux group
> was used as a GPIO? In that case sh_pfc_gpio_disable_free() will be called
> multiple times, possibly with the same mux_mark.
I haven't considered the case. But, about the mux_mark, I checked the values and then
they are not the same.
For example (debug printk patch):
diff --git a/drivers/pinctrl/sh-pfc/pinctrl.c b/drivers/pinctrl/sh-pfc/pinctrl.c
index bc29066..fdac71b 100644
--- a/drivers/pinctrl/sh-pfc/pinctrl.c
+++ b/drivers/pinctrl/sh-pfc/pinctrl.c
@@ -349,7 +349,7 @@ static int sh_pfc_func_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
unsigned int i;
int ret = 0;
- dev_dbg(pctldev->dev, "Configuring pin group %s\n", grp->name);
+ dev_info(pctldev->dev, "Configuring pin group %s\n", grp->name);
spin_lock_irqsave(&pfc->lock, flags);
@@ -375,6 +375,7 @@ static int sh_pfc_func_set_mux(struct pinctrl_dev *pctldev, unsigned selector,
cfg->mux_set = true;
cfg->mux_mark = grp->mux[i];
+ dev_info(pctldev->dev, "%d: %x\n", i, cfg->mux_mark);
}
done:
--
2.7.4
For example (log):
[ 0.497647] sh-pfc e6060000.pin-controller: Configuring pin group scif2_data_a
[ 0.497711] sh-pfc e6060000.pin-controller: 0: 77b
[ 0.497715] sh-pfc e6060000.pin-controller: 1: 760
Best regards,
Yoshihiro Shimoda
> I don't think this will cause issues, though.
>
> > spin_unlock_irqrestore(&pfc->lock, flags);
> > }
>
> Thanks!
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
^ permalink raw reply related
* RE: [PATCH RFC 5/7] pwm: rcar: remove a redundant condition in rcar_pwm_apply()
From: Yoshihiro Shimoda @ 2019-08-06 11:39 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Linus Walleij, Geert Uytterhoeven, Thierry Reding, Rob Herring,
Mark Rutland, open list:GPIO SUBSYSTEM, Linux PWM List,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Linux-Renesas
In-Reply-To: <CAMuHMdWw1Gh_CxgiO5gd+MY0vUvWX_ACDj+L3_Wcomkaf5Oo4Q@mail.gmail.com>
Hi Geert-san,
> From: Geert Uytterhoeven, Sent: Tuesday, August 6, 2019 6:06 PM
>
> Hi Shimoda-san,
>
> On Mon, Jul 8, 2019 at 11:08 AM Yoshihiro Shimoda
> <yoshihiro.shimoda.uh@renesas.com> wrote:
> > Since the rcar_pwm_apply() has already check whehter state->enabled
> > is not set or not, this patch removes a redundant condition.
> >
> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Thank you for your review!
> This is completely independent from the rest of the series, and can be applied
> immediately, right?
That's right.
Best regards,
Yoshihiro Shimoda
> Gr{oetje,eeting}s,
>
> Geert
>
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
^ permalink raw reply
* Re: [PATCH v1] pinctrl: intel: Use NSEC_PER_USEC for debounce calculus
From: Andy Shevchenko @ 2019-08-06 11:39 UTC (permalink / raw)
To: Mika Westerberg; +Cc: Linus Walleij, linux-gpio
In-Reply-To: <20190806101412.GJ2548@lahna.fi.intel.com>
On Tue, Aug 06, 2019 at 01:14:12PM +0300, Mika Westerberg wrote:
> On Tue, Jul 23, 2019 at 06:54:31PM +0300, Andy Shevchenko wrote:
> > Replace hard coded constants with self-explanatory names, i.e.
> > use NSEC_PER_USEC for debounce calculus.
> >
> > While here, add a unit suffix to debounce period constant.
> > -#define DEBOUNCE_PERIOD 31250 /* ns */
> > +#define DEBOUNCE_PERIOD_NS 31250
>
> Should this be called DEBOUNCE_PERIOD_NSEC to be consistent with
> NSEC_PER_USEC?
Either will good look to me.
> Otherwise looks good.
Will fix for v2.
Thanks!
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply
* [PATCH] gpiolib: never report open-drain/source lines as 'input' to user-space
From: Bartosz Golaszewski @ 2019-08-06 11:41 UTC (permalink / raw)
To: Linus Walleij; +Cc: linux-gpio, linux-kernel, Bartosz Golaszewski, stable
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
If the driver doesn't support open-drain/source config options, we
emulate this behavior when setting the direction by calling
gpiod_direction_input() if the default value is 0 (open-source) or
1 (open-drain), thus not actively driving the line in those cases.
This however clears the FLAG_IS_OUT bit for the GPIO line descriptor
and makes the LINEINFO ioctl() incorrectly report this line's mode as
'input' to user-space.
This commit modifies the ioctl() to always set the GPIOLINE_FLAG_IS_OUT
bit in the lineinfo structure's flags field. Since it's impossible to
use the input mode and open-drain/source options at the same time, we
can be sure the reported information will be correct.
Fixes: 521a2ad6f862 ("gpio: add userspace ABI for GPIO line information")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
drivers/gpio/gpiolib.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index f497003f119c..80a2a2cb673b 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1091,9 +1091,11 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
if (test_bit(FLAG_ACTIVE_LOW, &desc->flags))
lineinfo.flags |= GPIOLINE_FLAG_ACTIVE_LOW;
if (test_bit(FLAG_OPEN_DRAIN, &desc->flags))
- lineinfo.flags |= GPIOLINE_FLAG_OPEN_DRAIN;
+ lineinfo.flags |= (GPIOLINE_FLAG_OPEN_DRAIN |
+ GPIOLINE_FLAG_IS_OUT);
if (test_bit(FLAG_OPEN_SOURCE, &desc->flags))
- lineinfo.flags |= GPIOLINE_FLAG_OPEN_SOURCE;
+ lineinfo.flags |= (GPIOLINE_FLAG_OPEN_SOURCE |
+ GPIOLINE_FLAG_IS_OUT);
if (copy_to_user(ip, &lineinfo, sizeof(lineinfo)))
return -EFAULT;
--
2.21.0
^ permalink raw reply related
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