* [PATCH v8 2/3] mfd: qcom-rpm: Driver for the Qualcomm RPM
@ 2014-11-26 21:51 ` Bjorn Andersson
0 siblings, 0 replies; 31+ messages in thread
From: Bjorn Andersson @ 2014-11-26 21:51 UTC (permalink / raw)
To: Lee Jones, Rob Herring, Mark Brown
Cc: Josh Cartwright, devicetree, linux-kernel, linux-arm-kernel,
linux-arm-msm
Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960
and 8064 based devices. The driver exposes resources that child drivers
can operate on; to implementing regulator, clock and bus frequency
drivers.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
---
Lee, since your Acked-by earlier I've folded in the part of the RFC where I add
an extra parameter to qcom_rpm_write(). Part of that this is unchanged.
drivers/mfd/Kconfig | 14 ++
drivers/mfd/Makefile | 1 +
drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/qcom_rpm.h | 13 +
4 files changed, 609 insertions(+)
create mode 100644 drivers/mfd/qcom_rpm.c
create mode 100644 include/linux/mfd/qcom_rpm.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 1456ea7..b6bcb79 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -567,6 +567,20 @@ config MFD_PM8921_CORE
Say M here if you want to include support for PM8921 chip as a module.
This will build a module called "pm8921-core".
+config MFD_QCOM_RPM
+ tristate "Qualcomm Resource Power Manager (RPM)"
+ depends on ARCH_QCOM && OF
+ help
+ If you say yes to this option, support will be included for the
+ Resource Power Manager system found in the Qualcomm 8660, 8960 and
+ 8064 based devices.
+
+ This is required to access many regulators, clocks and bus
+ frequencies controlled by the RPM on these devices.
+
+ Say M here if you want to include support for the Qualcomm RPM as a
+ module. This will build a module called "qcom_rpm".
+
config MFD_SPMI_PMIC
tristate "Qualcomm SPMI PMICs"
depends on ARCH_QCOM || COMPILE_TEST
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 8bd54b1..3364bbc 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o
obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o
obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o
+obj-$(CONFIG_MFD_QCOM_RPM) += qcom_rpm.o
obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o
obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
obj-$(CONFIG_MFD_TPS65090) += tps65090.o
diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
new file mode 100644
index 0000000..f696328
--- /dev/null
+++ b/drivers/mfd/qcom_rpm.c
@@ -0,0 +1,581 @@
+/*
+ * Copyright (c) 2014, Sony Mobile Communications AB.
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/qcom_rpm.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/mfd/qcom-rpm.h>
+
+struct qcom_rpm_resource {
+ unsigned target_id;
+ unsigned status_id;
+ unsigned select_id;
+ unsigned size;
+};
+
+struct qcom_rpm_data {
+ u32 version;
+ const struct qcom_rpm_resource *resource_table;
+ unsigned n_resources;
+};
+
+struct qcom_rpm {
+ struct device *dev;
+ struct regmap *ipc_regmap;
+ unsigned ipc_offset;
+ unsigned ipc_bit;
+
+ struct completion ack;
+ struct mutex lock;
+
+ void __iomem *status_regs;
+ void __iomem *ctrl_regs;
+ void __iomem *req_regs;
+
+ u32 ack_status;
+
+ const struct qcom_rpm_data *data;
+};
+
+#define RPM_STATUS_REG(rpm, i) ((rpm)->status_regs + (i) * 4)
+#define RPM_CTRL_REG(rpm, i) ((rpm)->ctrl_regs + (i) * 4)
+#define RPM_REQ_REG(rpm, i) ((rpm)->req_regs + (i) * 4)
+
+#define RPM_REQUEST_TIMEOUT (5 * HZ)
+
+#define RPM_REQUEST_CONTEXT 3
+#define RPM_REQ_SELECT 11
+#define RPM_ACK_CONTEXT 15
+#define RPM_ACK_SELECTOR 23
+#define RPM_SELECT_SIZE 7
+
+#define RPM_NOTIFICATION BIT(30)
+#define RPM_REJECTED BIT(31)
+
+#define RPM_SIGNAL BIT(2)
+
+static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
+ [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
+ [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
+ [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
+ [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
+ [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
+ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
+ [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
+ [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
+ [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
+ [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
+ [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
+ [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
+ [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
+ [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
+ [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
+ [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
+ [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
+ [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
+ [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 },
+ [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 },
+ [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
+ [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 },
+ [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 },
+ [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 },
+ [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 },
+ [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 },
+ [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 },
+ [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 },
+ [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 },
+ [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 },
+ [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 },
+ [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 },
+ [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 },
+ [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 },
+ [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 },
+ [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 },
+ [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 },
+ [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 },
+ [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 },
+ [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 },
+ [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 },
+ [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 },
+ [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 },
+ [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 },
+ [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 },
+ [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 },
+ [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 },
+ [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 },
+ [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 },
+ [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 },
+ [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 },
+ [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 },
+ [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 },
+ [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 },
+ [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 },
+ [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 },
+ [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 },
+ [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 },
+ [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 },
+ [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 },
+ [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 },
+ [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 },
+ [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 },
+ [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 },
+ [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 },
+ [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 },
+ [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 },
+ [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 },
+ [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 },
+ [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 },
+ [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 },
+ [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 },
+ [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 },
+ [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 },
+ [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 },
+ [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 },
+ [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 },
+};
+
+static const struct qcom_rpm_data apq8064_template = {
+ .version = 3,
+ .resource_table = apq8064_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
+};
+
+static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
+ [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 },
+ [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 },
+ [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 },
+ [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 },
+ [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 },
+ [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 },
+ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 },
+ [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 },
+ [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 },
+ [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 },
+ [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 },
+ [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 },
+ [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 },
+ [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 },
+ [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 },
+ [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 },
+ [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 },
+ [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 },
+ [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 },
+ [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 },
+ [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 },
+ [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 },
+ [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 },
+ [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 },
+ [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 },
+ [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 },
+ [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 },
+ [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 },
+ [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 },
+ [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 },
+ [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 },
+ [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 },
+ [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 },
+ [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 },
+ [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 },
+ [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 },
+ [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 },
+ [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 },
+ [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 },
+ [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 },
+ [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 },
+ [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 },
+ [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 },
+ [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 },
+ [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 },
+ [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 },
+ [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 },
+ [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 },
+ [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 },
+ [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 },
+ [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 },
+ [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 },
+ [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 },
+ [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 },
+ [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 },
+ [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 },
+ [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 },
+ [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 },
+ [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 },
+ [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 },
+ [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 },
+ [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 },
+ [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 },
+ [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 },
+ [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 },
+ [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 },
+ [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 },
+ [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 },
+ [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 },
+ [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 },
+ [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 },
+ [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 },
+ [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 },
+ [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 },
+};
+
+static const struct qcom_rpm_data msm8660_template = {
+ .version = 2,
+ .resource_table = msm8660_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
+};
+
+static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
+ [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
+ [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
+ [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
+ [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
+ [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
+ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
+ [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
+ [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
+ [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
+ [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
+ [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
+ [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
+ [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
+ [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
+ [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
+ [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
+ [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
+ [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 },
+ [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 },
+ [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 },
+ [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 },
+ [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 },
+ [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 },
+ [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 },
+ [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 },
+ [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 },
+ [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 },
+ [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 },
+ [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 },
+ [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 },
+ [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 },
+ [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 },
+ [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 },
+ [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 },
+ [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 },
+ [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 },
+ [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 },
+ [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 },
+ [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 },
+ [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 },
+ [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 },
+ [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 },
+ [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 },
+ [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 },
+ [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 },
+ [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 },
+ [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 },
+ [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 },
+ [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 },
+ [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 },
+ [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 },
+ [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 },
+ [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 },
+ [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 },
+ [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 },
+ [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 },
+ [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 },
+ [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 },
+ [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 },
+ [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 },
+ [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 },
+ [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 },
+ [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 },
+ [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 },
+ [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 },
+ [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 },
+ [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 },
+ [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 },
+ [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 },
+ [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 },
+ [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 },
+ [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 },
+ [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 },
+};
+
+static const struct qcom_rpm_data msm8960_template = {
+ .version = 3,
+ .resource_table = msm8960_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
+};
+
+static const struct of_device_id qcom_rpm_of_match[] = {
+ { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
+ { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
+ { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
+ { }
+};
+MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
+
+int qcom_rpm_write(struct qcom_rpm *rpm,
+ int state,
+ int resource,
+ u32 *buf, size_t count)
+{
+ const struct qcom_rpm_resource *res;
+ const struct qcom_rpm_data *data = rpm->data;
+ u32 sel_mask[RPM_SELECT_SIZE] = { 0 };
+ int left;
+ int ret = 0;
+ int i;
+
+ if (WARN_ON(resource < 0 || resource >= data->n_resources))
+ return -EINVAL;
+
+ res = &data->resource_table[resource];
+ if (WARN_ON(res->size != count))
+ return -EINVAL;
+
+ mutex_lock(&rpm->lock);
+
+ for (i = 0; i < res->size; i++)
+ writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
+
+ bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
+ for (i = 0; i < ARRAY_SIZE(sel_mask); i++) {
+ writel_relaxed(sel_mask[i],
+ RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i));
+ }
+
+ writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT));
+
+ reinit_completion(&rpm->ack);
+ regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
+
+ left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
+ if (!left)
+ ret = -ETIMEDOUT;
+ else if (rpm->ack_status & RPM_REJECTED)
+ ret = -EIO;
+
+ mutex_unlock(&rpm->lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(qcom_rpm_write);
+
+static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
+{
+ struct qcom_rpm *rpm = dev;
+ u32 ack;
+ int i;
+
+ ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
+ for (i = 0; i < RPM_SELECT_SIZE; i++)
+ writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i));
+ writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
+
+ if (ack & RPM_NOTIFICATION) {
+ dev_warn(rpm->dev, "ignoring notification!\n");
+ } else {
+ rpm->ack_status = ack;
+ complete(&rpm->ack);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
+{
+ struct qcom_rpm *rpm = dev;
+
+ regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
+ dev_err(rpm->dev, "RPM triggered fatal error\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
+{
+ return IRQ_HANDLED;
+}
+
+static int qcom_rpm_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match;
+ struct device_node *syscon_np;
+ struct resource *res;
+ struct qcom_rpm *rpm;
+ u32 fw_version[3];
+ int irq_wakeup;
+ int irq_ack;
+ int irq_err;
+ int ret;
+
+ rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
+ if (!rpm)
+ return -ENOMEM;
+
+ rpm->dev = &pdev->dev;
+ mutex_init(&rpm->lock);
+ init_completion(&rpm->ack);
+
+ irq_ack = platform_get_irq_byname(pdev, "ack");
+ if (irq_ack < 0) {
+ dev_err(&pdev->dev, "required ack interrupt missing\n");
+ return irq_ack;
+ }
+
+ irq_err = platform_get_irq_byname(pdev, "err");
+ if (irq_err < 0) {
+ dev_err(&pdev->dev, "required err interrupt missing\n");
+ return irq_err;
+ }
+
+ irq_wakeup = platform_get_irq_byname(pdev, "wakeup");
+ if (irq_wakeup < 0) {
+ dev_err(&pdev->dev, "required wakeup interrupt missing\n");
+ return irq_wakeup;
+ }
+
+ match = of_match_device(qcom_rpm_of_match, &pdev->dev);
+ rpm->data = match->data;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(rpm->status_regs))
+ return PTR_ERR(rpm->status_regs);
+ rpm->ctrl_regs = rpm->status_regs + 0x400;
+ rpm->req_regs = rpm->status_regs + 0x600;
+
+ syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
+ if (!syscon_np) {
+ dev_err(&pdev->dev, "no qcom,ipc node\n");
+ return -ENODEV;
+ }
+
+ rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
+ if (IS_ERR(rpm->ipc_regmap))
+ return PTR_ERR(rpm->ipc_regmap);
+
+ ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
+ &rpm->ipc_offset);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "no offset in qcom,ipc\n");
+ return -EINVAL;
+ }
+
+ ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
+ &rpm->ipc_bit);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "no bit in qcom,ipc\n");
+ return -EINVAL;
+ }
+
+ dev_set_drvdata(&pdev->dev, rpm);
+
+ fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
+ fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
+ fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
+ if (fw_version[0] != rpm->data->version) {
+ dev_err(&pdev->dev,
+ "RPM version %u.%u.%u incompatible with driver version %u",
+ fw_version[0],
+ fw_version[1],
+ fw_version[2],
+ rpm->data->version);
+ return -EFAULT;
+ }
+
+ dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
+ fw_version[1],
+ fw_version[2]);
+
+ ret = devm_request_irq(&pdev->dev,
+ irq_ack,
+ qcom_rpm_ack_interrupt,
+ IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND,
+ "qcom_rpm_ack",
+ rpm);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request ack interrupt\n");
+ return ret;
+ }
+
+ ret = irq_set_irq_wake(irq_ack, 1);
+ if (ret)
+ dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n");
+
+ ret = devm_request_irq(&pdev->dev,
+ irq_err,
+ qcom_rpm_err_interrupt,
+ IRQF_TRIGGER_RISING,
+ "qcom_rpm_err",
+ rpm);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request err interrupt\n");
+ return ret;
+ }
+
+ ret = devm_request_irq(&pdev->dev,
+ irq_wakeup,
+ qcom_rpm_wakeup_interrupt,
+ IRQF_TRIGGER_RISING,
+ "qcom_rpm_wakeup",
+ rpm);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request wakeup interrupt\n");
+ return ret;
+ }
+
+ ret = irq_set_irq_wake(irq_wakeup, 1);
+ if (ret)
+ dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n");
+
+ return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+}
+
+static int qcom_rpm_remove(struct platform_device *pdev)
+{
+ of_platform_depopulate(&pdev->dev);
+ return 0;
+}
+
+static struct platform_driver qcom_rpm_driver = {
+ .probe = qcom_rpm_probe,
+ .remove = qcom_rpm_remove,
+ .driver = {
+ .name = "qcom_rpm",
+ .of_match_table = qcom_rpm_of_match,
+ },
+};
+
+static int __init qcom_rpm_init(void)
+{
+ return platform_driver_register(&qcom_rpm_driver);
+}
+arch_initcall(qcom_rpm_init);
+
+static void __exit qcom_rpm_exit(void)
+{
+ platform_driver_unregister(&qcom_rpm_driver);
+}
+module_exit(qcom_rpm_exit)
+
+MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
diff --git a/include/linux/mfd/qcom_rpm.h b/include/linux/mfd/qcom_rpm.h
new file mode 100644
index 0000000..742ebf1
--- /dev/null
+++ b/include/linux/mfd/qcom_rpm.h
@@ -0,0 +1,13 @@
+#ifndef __QCOM_RPM_H__
+#define __QCOM_RPM_H__
+
+#include <linux/types.h>
+
+struct qcom_rpm;
+
+#define QCOM_RPM_ACTIVE_STATE 0
+#define QCOM_RPM_SLEEP_STATE 1
+
+int qcom_rpm_write(struct qcom_rpm *rpm, int state, int resource, u32 *buf, size_t count);
+
+#endif
--
1.8.2.2
^ permalink raw reply related [flat|nested] 31+ messages in thread* [PATCH v8 2/3] mfd: qcom-rpm: Driver for the Qualcomm RPM
@ 2014-11-26 21:51 ` Bjorn Andersson
0 siblings, 0 replies; 31+ messages in thread
From: Bjorn Andersson @ 2014-11-26 21:51 UTC (permalink / raw)
To: linux-arm-kernel
Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960
and 8064 based devices. The driver exposes resources that child drivers
can operate on; to implementing regulator, clock and bus frequency
drivers.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
---
Lee, since your Acked-by earlier I've folded in the part of the RFC where I add
an extra parameter to qcom_rpm_write(). Part of that this is unchanged.
drivers/mfd/Kconfig | 14 ++
drivers/mfd/Makefile | 1 +
drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/qcom_rpm.h | 13 +
4 files changed, 609 insertions(+)
create mode 100644 drivers/mfd/qcom_rpm.c
create mode 100644 include/linux/mfd/qcom_rpm.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 1456ea7..b6bcb79 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -567,6 +567,20 @@ config MFD_PM8921_CORE
Say M here if you want to include support for PM8921 chip as a module.
This will build a module called "pm8921-core".
+config MFD_QCOM_RPM
+ tristate "Qualcomm Resource Power Manager (RPM)"
+ depends on ARCH_QCOM && OF
+ help
+ If you say yes to this option, support will be included for the
+ Resource Power Manager system found in the Qualcomm 8660, 8960 and
+ 8064 based devices.
+
+ This is required to access many regulators, clocks and bus
+ frequencies controlled by the RPM on these devices.
+
+ Say M here if you want to include support for the Qualcomm RPM as a
+ module. This will build a module called "qcom_rpm".
+
config MFD_SPMI_PMIC
tristate "Qualcomm SPMI PMICs"
depends on ARCH_QCOM || COMPILE_TEST
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 8bd54b1..3364bbc 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o
obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o
obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o
+obj-$(CONFIG_MFD_QCOM_RPM) += qcom_rpm.o
obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o
obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
obj-$(CONFIG_MFD_TPS65090) += tps65090.o
diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
new file mode 100644
index 0000000..f696328
--- /dev/null
+++ b/drivers/mfd/qcom_rpm.c
@@ -0,0 +1,581 @@
+/*
+ * Copyright (c) 2014, Sony Mobile Communications AB.
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/qcom_rpm.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/mfd/qcom-rpm.h>
+
+struct qcom_rpm_resource {
+ unsigned target_id;
+ unsigned status_id;
+ unsigned select_id;
+ unsigned size;
+};
+
+struct qcom_rpm_data {
+ u32 version;
+ const struct qcom_rpm_resource *resource_table;
+ unsigned n_resources;
+};
+
+struct qcom_rpm {
+ struct device *dev;
+ struct regmap *ipc_regmap;
+ unsigned ipc_offset;
+ unsigned ipc_bit;
+
+ struct completion ack;
+ struct mutex lock;
+
+ void __iomem *status_regs;
+ void __iomem *ctrl_regs;
+ void __iomem *req_regs;
+
+ u32 ack_status;
+
+ const struct qcom_rpm_data *data;
+};
+
+#define RPM_STATUS_REG(rpm, i) ((rpm)->status_regs + (i) * 4)
+#define RPM_CTRL_REG(rpm, i) ((rpm)->ctrl_regs + (i) * 4)
+#define RPM_REQ_REG(rpm, i) ((rpm)->req_regs + (i) * 4)
+
+#define RPM_REQUEST_TIMEOUT (5 * HZ)
+
+#define RPM_REQUEST_CONTEXT 3
+#define RPM_REQ_SELECT 11
+#define RPM_ACK_CONTEXT 15
+#define RPM_ACK_SELECTOR 23
+#define RPM_SELECT_SIZE 7
+
+#define RPM_NOTIFICATION BIT(30)
+#define RPM_REJECTED BIT(31)
+
+#define RPM_SIGNAL BIT(2)
+
+static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
+ [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
+ [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
+ [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
+ [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
+ [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
+ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
+ [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
+ [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
+ [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
+ [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
+ [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
+ [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
+ [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
+ [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
+ [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
+ [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
+ [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
+ [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
+ [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 },
+ [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 },
+ [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
+ [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 },
+ [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 },
+ [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 },
+ [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 },
+ [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 },
+ [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 },
+ [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 },
+ [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 },
+ [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 },
+ [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 },
+ [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 },
+ [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 },
+ [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 },
+ [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 },
+ [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 },
+ [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 },
+ [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 },
+ [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 },
+ [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 },
+ [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 },
+ [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 },
+ [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 },
+ [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 },
+ [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 },
+ [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 },
+ [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 },
+ [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 },
+ [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 },
+ [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 },
+ [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 },
+ [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 },
+ [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 },
+ [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 },
+ [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 },
+ [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 },
+ [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 },
+ [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 },
+ [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 },
+ [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 },
+ [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 },
+ [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 },
+ [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 },
+ [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 },
+ [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 },
+ [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 },
+ [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 },
+ [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 },
+ [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 },
+ [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 },
+ [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 },
+ [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 },
+ [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 },
+ [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 },
+ [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 },
+ [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 },
+ [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 },
+};
+
+static const struct qcom_rpm_data apq8064_template = {
+ .version = 3,
+ .resource_table = apq8064_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
+};
+
+static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
+ [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 },
+ [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 },
+ [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 },
+ [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 },
+ [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 },
+ [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 },
+ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 },
+ [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 },
+ [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 },
+ [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 },
+ [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 },
+ [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 },
+ [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 },
+ [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 },
+ [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 },
+ [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 },
+ [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 },
+ [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 },
+ [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 },
+ [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 },
+ [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 },
+ [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 },
+ [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 },
+ [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 },
+ [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 },
+ [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 },
+ [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 },
+ [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 },
+ [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 },
+ [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 },
+ [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 },
+ [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 },
+ [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 },
+ [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 },
+ [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 },
+ [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 },
+ [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 },
+ [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 },
+ [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 },
+ [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 },
+ [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 },
+ [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 },
+ [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 },
+ [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 },
+ [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 },
+ [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 },
+ [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 },
+ [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 },
+ [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 },
+ [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 },
+ [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 },
+ [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 },
+ [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 },
+ [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 },
+ [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 },
+ [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 },
+ [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 },
+ [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 },
+ [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 },
+ [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 },
+ [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 },
+ [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 },
+ [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 },
+ [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 },
+ [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 },
+ [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 },
+ [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 },
+ [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 },
+ [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 },
+ [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 },
+ [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 },
+ [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 },
+ [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 },
+ [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 },
+};
+
+static const struct qcom_rpm_data msm8660_template = {
+ .version = 2,
+ .resource_table = msm8660_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
+};
+
+static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
+ [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
+ [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
+ [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
+ [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
+ [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
+ [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
+ [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
+ [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
+ [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
+ [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
+ [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
+ [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
+ [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
+ [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
+ [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
+ [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
+ [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
+ [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 },
+ [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 },
+ [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 },
+ [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 },
+ [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 },
+ [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 },
+ [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 },
+ [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 },
+ [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 },
+ [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 },
+ [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 },
+ [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 },
+ [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 },
+ [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 },
+ [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 },
+ [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 },
+ [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 },
+ [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 },
+ [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 },
+ [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 },
+ [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 },
+ [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 },
+ [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 },
+ [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 },
+ [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 },
+ [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 },
+ [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 },
+ [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 },
+ [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 },
+ [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 },
+ [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 },
+ [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 },
+ [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 },
+ [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 },
+ [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 },
+ [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 },
+ [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 },
+ [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 },
+ [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 },
+ [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 },
+ [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 },
+ [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 },
+ [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 },
+ [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 },
+ [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 },
+ [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 },
+ [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 },
+ [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 },
+ [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 },
+ [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 },
+ [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 },
+ [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 },
+ [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 },
+ [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 },
+ [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 },
+ [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 },
+};
+
+static const struct qcom_rpm_data msm8960_template = {
+ .version = 3,
+ .resource_table = msm8960_rpm_resource_table,
+ .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
+};
+
+static const struct of_device_id qcom_rpm_of_match[] = {
+ { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
+ { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
+ { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
+ { }
+};
+MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
+
+int qcom_rpm_write(struct qcom_rpm *rpm,
+ int state,
+ int resource,
+ u32 *buf, size_t count)
+{
+ const struct qcom_rpm_resource *res;
+ const struct qcom_rpm_data *data = rpm->data;
+ u32 sel_mask[RPM_SELECT_SIZE] = { 0 };
+ int left;
+ int ret = 0;
+ int i;
+
+ if (WARN_ON(resource < 0 || resource >= data->n_resources))
+ return -EINVAL;
+
+ res = &data->resource_table[resource];
+ if (WARN_ON(res->size != count))
+ return -EINVAL;
+
+ mutex_lock(&rpm->lock);
+
+ for (i = 0; i < res->size; i++)
+ writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
+
+ bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
+ for (i = 0; i < ARRAY_SIZE(sel_mask); i++) {
+ writel_relaxed(sel_mask[i],
+ RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i));
+ }
+
+ writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT));
+
+ reinit_completion(&rpm->ack);
+ regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
+
+ left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
+ if (!left)
+ ret = -ETIMEDOUT;
+ else if (rpm->ack_status & RPM_REJECTED)
+ ret = -EIO;
+
+ mutex_unlock(&rpm->lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(qcom_rpm_write);
+
+static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
+{
+ struct qcom_rpm *rpm = dev;
+ u32 ack;
+ int i;
+
+ ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
+ for (i = 0; i < RPM_SELECT_SIZE; i++)
+ writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i));
+ writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
+
+ if (ack & RPM_NOTIFICATION) {
+ dev_warn(rpm->dev, "ignoring notification!\n");
+ } else {
+ rpm->ack_status = ack;
+ complete(&rpm->ack);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
+{
+ struct qcom_rpm *rpm = dev;
+
+ regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
+ dev_err(rpm->dev, "RPM triggered fatal error\n");
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
+{
+ return IRQ_HANDLED;
+}
+
+static int qcom_rpm_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match;
+ struct device_node *syscon_np;
+ struct resource *res;
+ struct qcom_rpm *rpm;
+ u32 fw_version[3];
+ int irq_wakeup;
+ int irq_ack;
+ int irq_err;
+ int ret;
+
+ rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
+ if (!rpm)
+ return -ENOMEM;
+
+ rpm->dev = &pdev->dev;
+ mutex_init(&rpm->lock);
+ init_completion(&rpm->ack);
+
+ irq_ack = platform_get_irq_byname(pdev, "ack");
+ if (irq_ack < 0) {
+ dev_err(&pdev->dev, "required ack interrupt missing\n");
+ return irq_ack;
+ }
+
+ irq_err = platform_get_irq_byname(pdev, "err");
+ if (irq_err < 0) {
+ dev_err(&pdev->dev, "required err interrupt missing\n");
+ return irq_err;
+ }
+
+ irq_wakeup = platform_get_irq_byname(pdev, "wakeup");
+ if (irq_wakeup < 0) {
+ dev_err(&pdev->dev, "required wakeup interrupt missing\n");
+ return irq_wakeup;
+ }
+
+ match = of_match_device(qcom_rpm_of_match, &pdev->dev);
+ rpm->data = match->data;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(rpm->status_regs))
+ return PTR_ERR(rpm->status_regs);
+ rpm->ctrl_regs = rpm->status_regs + 0x400;
+ rpm->req_regs = rpm->status_regs + 0x600;
+
+ syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
+ if (!syscon_np) {
+ dev_err(&pdev->dev, "no qcom,ipc node\n");
+ return -ENODEV;
+ }
+
+ rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
+ if (IS_ERR(rpm->ipc_regmap))
+ return PTR_ERR(rpm->ipc_regmap);
+
+ ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
+ &rpm->ipc_offset);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "no offset in qcom,ipc\n");
+ return -EINVAL;
+ }
+
+ ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
+ &rpm->ipc_bit);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "no bit in qcom,ipc\n");
+ return -EINVAL;
+ }
+
+ dev_set_drvdata(&pdev->dev, rpm);
+
+ fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
+ fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
+ fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
+ if (fw_version[0] != rpm->data->version) {
+ dev_err(&pdev->dev,
+ "RPM version %u.%u.%u incompatible with driver version %u",
+ fw_version[0],
+ fw_version[1],
+ fw_version[2],
+ rpm->data->version);
+ return -EFAULT;
+ }
+
+ dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
+ fw_version[1],
+ fw_version[2]);
+
+ ret = devm_request_irq(&pdev->dev,
+ irq_ack,
+ qcom_rpm_ack_interrupt,
+ IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND,
+ "qcom_rpm_ack",
+ rpm);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request ack interrupt\n");
+ return ret;
+ }
+
+ ret = irq_set_irq_wake(irq_ack, 1);
+ if (ret)
+ dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n");
+
+ ret = devm_request_irq(&pdev->dev,
+ irq_err,
+ qcom_rpm_err_interrupt,
+ IRQF_TRIGGER_RISING,
+ "qcom_rpm_err",
+ rpm);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request err interrupt\n");
+ return ret;
+ }
+
+ ret = devm_request_irq(&pdev->dev,
+ irq_wakeup,
+ qcom_rpm_wakeup_interrupt,
+ IRQF_TRIGGER_RISING,
+ "qcom_rpm_wakeup",
+ rpm);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to request wakeup interrupt\n");
+ return ret;
+ }
+
+ ret = irq_set_irq_wake(irq_wakeup, 1);
+ if (ret)
+ dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n");
+
+ return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+}
+
+static int qcom_rpm_remove(struct platform_device *pdev)
+{
+ of_platform_depopulate(&pdev->dev);
+ return 0;
+}
+
+static struct platform_driver qcom_rpm_driver = {
+ .probe = qcom_rpm_probe,
+ .remove = qcom_rpm_remove,
+ .driver = {
+ .name = "qcom_rpm",
+ .of_match_table = qcom_rpm_of_match,
+ },
+};
+
+static int __init qcom_rpm_init(void)
+{
+ return platform_driver_register(&qcom_rpm_driver);
+}
+arch_initcall(qcom_rpm_init);
+
+static void __exit qcom_rpm_exit(void)
+{
+ platform_driver_unregister(&qcom_rpm_driver);
+}
+module_exit(qcom_rpm_exit)
+
+MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
diff --git a/include/linux/mfd/qcom_rpm.h b/include/linux/mfd/qcom_rpm.h
new file mode 100644
index 0000000..742ebf1
--- /dev/null
+++ b/include/linux/mfd/qcom_rpm.h
@@ -0,0 +1,13 @@
+#ifndef __QCOM_RPM_H__
+#define __QCOM_RPM_H__
+
+#include <linux/types.h>
+
+struct qcom_rpm;
+
+#define QCOM_RPM_ACTIVE_STATE 0
+#define QCOM_RPM_SLEEP_STATE 1
+
+int qcom_rpm_write(struct qcom_rpm *rpm, int state, int resource, u32 *buf, size_t count);
+
+#endif
--
1.8.2.2
^ permalink raw reply related [flat|nested] 31+ messages in thread* Re: [PATCH v8 2/3] mfd: qcom-rpm: Driver for the Qualcomm RPM
2014-11-26 21:51 ` Bjorn Andersson
@ 2014-12-22 10:50 ` Paul Bolle
-1 siblings, 0 replies; 31+ messages in thread
From: Paul Bolle @ 2014-12-22 10:50 UTC (permalink / raw)
To: Bjorn Andersson, Mark Brown
Cc: Valentin Rothberg, Lee Jones, Rob Herring, Josh Cartwright,
devicetree, linux-kernel, linux-arm-kernel, linux-arm-msm
Hi Bjorn,
On Wed, 2014-11-26 at 13:51 -0800, Bjorn Andersson wrote:
> Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960
> and 8064 based devices. The driver exposes resources that child drivers
> can operate on; to implementing regulator, clock and bus frequency
> drivers.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
> ---
>
> Lee, since your Acked-by earlier I've folded in the part of the RFC where I add
> an extra parameter to qcom_rpm_write(). Part of that this is unchanged.
>
> drivers/mfd/Kconfig | 14 ++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/qcom_rpm.h | 13 +
> 4 files changed, 609 insertions(+)
> create mode 100644 drivers/mfd/qcom_rpm.c
> create mode 100644 include/linux/mfd/qcom_rpm.h
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 1456ea7..b6bcb79 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -567,6 +567,20 @@ config MFD_PM8921_CORE
> Say M here if you want to include support for PM8921 chip as a module.
> This will build a module called "pm8921-core".
>
> +config MFD_QCOM_RPM
> + tristate "Qualcomm Resource Power Manager (RPM)"
> + depends on ARCH_QCOM && OF
> + help
> + If you say yes to this option, support will be included for the
> + Resource Power Manager system found in the Qualcomm 8660, 8960 and
> + 8064 based devices.
> +
> + This is required to access many regulators, clocks and bus
> + frequencies controlled by the RPM on these devices.
> +
> + Say M here if you want to include support for the Qualcomm RPM as a
> + module. This will build a module called "qcom_rpm".
> +
The Qualcomm RPM regulator driver (see Kconfig symbol
REGULATOR_QCOM_RPM) was added in v3.18. It depends on the above symbol,
so it has not yet gotten build coverage. Even manual hacks like
make -C ../.. M=$PWD CONFIG_REGULATOR_QCOM_RPM=m qcom_rpm-regulator.ko
won't work for that driver, because it includes linux/mfd/qcom_rpm.h,
which is not part of the tree.
It seems there's no generally agreed upon guideline for situations like
this. So I guess it's up to Mark to decide how long the tree should
include an unbuildable driver.
Paul Bolle
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v8 2/3] mfd: qcom-rpm: Driver for the Qualcomm RPM
@ 2014-12-22 10:50 ` Paul Bolle
0 siblings, 0 replies; 31+ messages in thread
From: Paul Bolle @ 2014-12-22 10:50 UTC (permalink / raw)
To: linux-arm-kernel
Hi Bjorn,
On Wed, 2014-11-26 at 13:51 -0800, Bjorn Andersson wrote:
> Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960
> and 8064 based devices. The driver exposes resources that child drivers
> can operate on; to implementing regulator, clock and bus frequency
> drivers.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
> ---
>
> Lee, since your Acked-by earlier I've folded in the part of the RFC where I add
> an extra parameter to qcom_rpm_write(). Part of that this is unchanged.
>
> drivers/mfd/Kconfig | 14 ++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/qcom_rpm.h | 13 +
> 4 files changed, 609 insertions(+)
> create mode 100644 drivers/mfd/qcom_rpm.c
> create mode 100644 include/linux/mfd/qcom_rpm.h
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 1456ea7..b6bcb79 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -567,6 +567,20 @@ config MFD_PM8921_CORE
> Say M here if you want to include support for PM8921 chip as a module.
> This will build a module called "pm8921-core".
>
> +config MFD_QCOM_RPM
> + tristate "Qualcomm Resource Power Manager (RPM)"
> + depends on ARCH_QCOM && OF
> + help
> + If you say yes to this option, support will be included for the
> + Resource Power Manager system found in the Qualcomm 8660, 8960 and
> + 8064 based devices.
> +
> + This is required to access many regulators, clocks and bus
> + frequencies controlled by the RPM on these devices.
> +
> + Say M here if you want to include support for the Qualcomm RPM as a
> + module. This will build a module called "qcom_rpm".
> +
The Qualcomm RPM regulator driver (see Kconfig symbol
REGULATOR_QCOM_RPM) was added in v3.18. It depends on the above symbol,
so it has not yet gotten build coverage. Even manual hacks like
make -C ../.. M=$PWD CONFIG_REGULATOR_QCOM_RPM=m qcom_rpm-regulator.ko
won't work for that driver, because it includes linux/mfd/qcom_rpm.h,
which is not part of the tree.
It seems there's no generally agreed upon guideline for situations like
this. So I guess it's up to Mark to decide how long the tree should
include an unbuildable driver.
Paul Bolle
^ permalink raw reply [flat|nested] 31+ messages in thread* Re: [PATCH v8 2/3] mfd: qcom-rpm: Driver for the Qualcomm RPM
2014-12-22 10:50 ` Paul Bolle
@ 2014-12-26 20:11 ` Bjorn Andersson
-1 siblings, 0 replies; 31+ messages in thread
From: Bjorn Andersson @ 2014-12-26 20:11 UTC (permalink / raw)
To: Paul Bolle, Lee Jones
Cc: Bjorn Andersson, Mark Brown, Valentin Rothberg, Rob Herring,
Josh Cartwright, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-arm-msm
On Mon, Dec 22, 2014 at 2:50 AM, Paul Bolle <pebolle@tiscali.nl> wrote:
> Hi Bjorn,
>
Hi Paul
[..]
>
> The Qualcomm RPM regulator driver (see Kconfig symbol
> REGULATOR_QCOM_RPM) was added in v3.18. It depends on the above symbol,
> so it has not yet gotten build coverage. Even manual hacks like
> make -C ../.. M=$PWD CONFIG_REGULATOR_QCOM_RPM=m qcom_rpm-regulator.ko
>
> won't work for that driver, because it includes linux/mfd/qcom_rpm.h,
> which is not part of the tree.
>
Correct, but unfortunately Lee Jones awaits devicetree maintainers ack
(or any comment) and have been doing so for months now. I did send out
a ping a few weeks ago, but might have done so when they where
occupied by the merge window.
Lee, the Qualcomm RPM binding is not for a subsystem and is limited to
Qualcomm devices. Could we apply this in accordance with II.2 in
Documentation/devicetree/bindings/submitting-patches.txt or is there
anything I could do to make you feel comfortable doing so?
> It seems there's no generally agreed upon guideline for situations like
> this. So I guess it's up to Mark to decide how long the tree should
> include an unbuildable driver.
>
I haven't seen any guidelines, but appreciate Mark's way of working in
this matter - as we've been able to run our devices with fewer
out-of-tree patches.
Regards,
Bjorn
^ permalink raw reply [flat|nested] 31+ messages in thread
* [PATCH v8 2/3] mfd: qcom-rpm: Driver for the Qualcomm RPM
@ 2014-12-26 20:11 ` Bjorn Andersson
0 siblings, 0 replies; 31+ messages in thread
From: Bjorn Andersson @ 2014-12-26 20:11 UTC (permalink / raw)
To: linux-arm-kernel
On Mon, Dec 22, 2014 at 2:50 AM, Paul Bolle <pebolle@tiscali.nl> wrote:
> Hi Bjorn,
>
Hi Paul
[..]
>
> The Qualcomm RPM regulator driver (see Kconfig symbol
> REGULATOR_QCOM_RPM) was added in v3.18. It depends on the above symbol,
> so it has not yet gotten build coverage. Even manual hacks like
> make -C ../.. M=$PWD CONFIG_REGULATOR_QCOM_RPM=m qcom_rpm-regulator.ko
>
> won't work for that driver, because it includes linux/mfd/qcom_rpm.h,
> which is not part of the tree.
>
Correct, but unfortunately Lee Jones awaits devicetree maintainers ack
(or any comment) and have been doing so for months now. I did send out
a ping a few weeks ago, but might have done so when they where
occupied by the merge window.
Lee, the Qualcomm RPM binding is not for a subsystem and is limited to
Qualcomm devices. Could we apply this in accordance with II.2 in
Documentation/devicetree/bindings/submitting-patches.txt or is there
anything I could do to make you feel comfortable doing so?
> It seems there's no generally agreed upon guideline for situations like
> this. So I guess it's up to Mark to decide how long the tree should
> include an unbuildable driver.
>
I haven't seen any guidelines, but appreciate Mark's way of working in
this matter - as we've been able to run our devices with fewer
out-of-tree patches.
Regards,
Bjorn
^ permalink raw reply [flat|nested] 31+ messages in thread
* Re: [PATCH v8 2/3] mfd: qcom-rpm: Driver for the Qualcomm RPM
2014-11-26 21:51 ` Bjorn Andersson
@ 2015-01-20 17:02 ` Lee Jones
-1 siblings, 0 replies; 31+ messages in thread
From: Lee Jones @ 2015-01-20 17:02 UTC (permalink / raw)
To: Bjorn Andersson
Cc: Rob Herring, Mark Brown, Josh Cartwright, devicetree,
linux-kernel, linux-arm-kernel, linux-arm-msm
On Wed, 26 Nov 2014, Bjorn Andersson wrote:
> Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960
> and 8064 based devices. The driver exposes resources that child drivers
> can operate on; to implementing regulator, clock and bus frequency
> drivers.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
> ---
>
> Lee, since your Acked-by earlier I've folded in the part of the RFC where I add
> an extra parameter to qcom_rpm_write(). Part of that this is unchanged.
>
> drivers/mfd/Kconfig | 14 ++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/qcom_rpm.h | 13 +
> 4 files changed, 609 insertions(+)
> create mode 100644 drivers/mfd/qcom_rpm.c
> create mode 100644 include/linux/mfd/qcom_rpm.h
Applied, thanks.
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 1456ea7..b6bcb79 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -567,6 +567,20 @@ config MFD_PM8921_CORE
> Say M here if you want to include support for PM8921 chip as a module.
> This will build a module called "pm8921-core".
>
> +config MFD_QCOM_RPM
> + tristate "Qualcomm Resource Power Manager (RPM)"
> + depends on ARCH_QCOM && OF
> + help
> + If you say yes to this option, support will be included for the
> + Resource Power Manager system found in the Qualcomm 8660, 8960 and
> + 8064 based devices.
> +
> + This is required to access many regulators, clocks and bus
> + frequencies controlled by the RPM on these devices.
> +
> + Say M here if you want to include support for the Qualcomm RPM as a
> + module. This will build a module called "qcom_rpm".
> +
> config MFD_SPMI_PMIC
> tristate "Qualcomm SPMI PMICs"
> depends on ARCH_QCOM || COMPILE_TEST
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 8bd54b1..3364bbc 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o
> obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
> obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o
> obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o
> +obj-$(CONFIG_MFD_QCOM_RPM) += qcom_rpm.o
> obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o
> obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
> obj-$(CONFIG_MFD_TPS65090) += tps65090.o
> diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
> new file mode 100644
> index 0000000..f696328
> --- /dev/null
> +++ b/drivers/mfd/qcom_rpm.c
> @@ -0,0 +1,581 @@
> +/*
> + * Copyright (c) 2014, Sony Mobile Communications AB.
> + * Copyright (c) 2013, The Linux Foundation. All rights reserved.
> + * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/of_platform.h>
> +#include <linux/io.h>
> +#include <linux/interrupt.h>
> +#include <linux/mfd/qcom_rpm.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/regmap.h>
> +
> +#include <dt-bindings/mfd/qcom-rpm.h>
> +
> +struct qcom_rpm_resource {
> + unsigned target_id;
> + unsigned status_id;
> + unsigned select_id;
> + unsigned size;
> +};
> +
> +struct qcom_rpm_data {
> + u32 version;
> + const struct qcom_rpm_resource *resource_table;
> + unsigned n_resources;
> +};
> +
> +struct qcom_rpm {
> + struct device *dev;
> + struct regmap *ipc_regmap;
> + unsigned ipc_offset;
> + unsigned ipc_bit;
> +
> + struct completion ack;
> + struct mutex lock;
> +
> + void __iomem *status_regs;
> + void __iomem *ctrl_regs;
> + void __iomem *req_regs;
> +
> + u32 ack_status;
> +
> + const struct qcom_rpm_data *data;
> +};
> +
> +#define RPM_STATUS_REG(rpm, i) ((rpm)->status_regs + (i) * 4)
> +#define RPM_CTRL_REG(rpm, i) ((rpm)->ctrl_regs + (i) * 4)
> +#define RPM_REQ_REG(rpm, i) ((rpm)->req_regs + (i) * 4)
> +
> +#define RPM_REQUEST_TIMEOUT (5 * HZ)
> +
> +#define RPM_REQUEST_CONTEXT 3
> +#define RPM_REQ_SELECT 11
> +#define RPM_ACK_CONTEXT 15
> +#define RPM_ACK_SELECTOR 23
> +#define RPM_SELECT_SIZE 7
> +
> +#define RPM_NOTIFICATION BIT(30)
> +#define RPM_REJECTED BIT(31)
> +
> +#define RPM_SIGNAL BIT(2)
> +
> +static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
> + [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
> + [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
> + [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
> + [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
> + [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
> + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
> + [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
> + [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
> + [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
> + [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
> + [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
> + [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
> + [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
> + [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
> + [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
> + [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
> + [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
> + [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
> + [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 },
> + [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 },
> + [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
> + [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 },
> + [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 },
> + [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 },
> + [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 },
> + [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 },
> + [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 },
> + [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 },
> + [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 },
> + [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 },
> + [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 },
> + [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 },
> + [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 },
> + [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 },
> + [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 },
> + [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 },
> + [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 },
> + [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 },
> + [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 },
> + [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 },
> + [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 },
> + [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 },
> + [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 },
> + [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 },
> + [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 },
> + [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 },
> + [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 },
> + [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 },
> + [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 },
> + [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 },
> + [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 },
> + [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 },
> + [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 },
> + [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 },
> + [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 },
> + [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 },
> + [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 },
> + [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 },
> + [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 },
> + [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 },
> + [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 },
> + [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 },
> + [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 },
> + [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 },
> + [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 },
> + [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 },
> + [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 },
> + [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 },
> + [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 },
> + [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 },
> + [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 },
> + [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 },
> + [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 },
> + [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 },
> + [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 },
> + [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 },
> + [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 },
> +};
> +
> +static const struct qcom_rpm_data apq8064_template = {
> + .version = 3,
> + .resource_table = apq8064_rpm_resource_table,
> + .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
> +};
> +
> +static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
> + [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 },
> + [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 },
> + [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 },
> + [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 },
> + [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 },
> + [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 },
> + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 },
> + [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 },
> + [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 },
> + [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 },
> + [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 },
> + [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 },
> + [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 },
> + [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 },
> + [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 },
> + [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 },
> + [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 },
> + [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 },
> + [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 },
> + [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 },
> + [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 },
> + [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 },
> + [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 },
> + [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 },
> + [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 },
> + [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 },
> + [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 },
> + [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 },
> + [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 },
> + [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 },
> + [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 },
> + [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 },
> + [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 },
> + [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 },
> + [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 },
> + [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 },
> + [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 },
> + [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 },
> + [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 },
> + [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 },
> + [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 },
> + [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 },
> + [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 },
> + [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 },
> + [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 },
> + [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 },
> + [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 },
> + [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 },
> + [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 },
> + [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 },
> + [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 },
> + [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 },
> + [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 },
> + [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 },
> + [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 },
> + [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 },
> + [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 },
> + [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 },
> + [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 },
> + [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 },
> + [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 },
> + [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 },
> + [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 },
> + [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 },
> + [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 },
> + [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 },
> + [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 },
> + [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 },
> + [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 },
> + [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 },
> + [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 },
> + [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 },
> + [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 },
> + [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 },
> +};
> +
> +static const struct qcom_rpm_data msm8660_template = {
> + .version = 2,
> + .resource_table = msm8660_rpm_resource_table,
> + .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
> +};
> +
> +static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
> + [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
> + [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
> + [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
> + [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
> + [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
> + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
> + [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
> + [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
> + [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
> + [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
> + [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
> + [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
> + [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
> + [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
> + [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
> + [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
> + [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
> + [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 },
> + [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 },
> + [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 },
> + [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 },
> + [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 },
> + [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 },
> + [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 },
> + [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 },
> + [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 },
> + [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 },
> + [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 },
> + [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 },
> + [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 },
> + [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 },
> + [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 },
> + [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 },
> + [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 },
> + [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 },
> + [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 },
> + [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 },
> + [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 },
> + [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 },
> + [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 },
> + [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 },
> + [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 },
> + [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 },
> + [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 },
> + [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 },
> + [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 },
> + [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 },
> + [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 },
> + [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 },
> + [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 },
> + [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 },
> + [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 },
> + [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 },
> + [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 },
> + [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 },
> + [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 },
> + [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 },
> + [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 },
> + [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 },
> + [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 },
> + [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 },
> + [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 },
> + [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 },
> + [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 },
> + [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 },
> + [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 },
> + [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 },
> + [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 },
> + [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 },
> + [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 },
> + [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 },
> + [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 },
> + [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 },
> +};
> +
> +static const struct qcom_rpm_data msm8960_template = {
> + .version = 3,
> + .resource_table = msm8960_rpm_resource_table,
> + .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
> +};
> +
> +static const struct of_device_id qcom_rpm_of_match[] = {
> + { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
> + { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
> + { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
> +
> +int qcom_rpm_write(struct qcom_rpm *rpm,
> + int state,
> + int resource,
> + u32 *buf, size_t count)
> +{
> + const struct qcom_rpm_resource *res;
> + const struct qcom_rpm_data *data = rpm->data;
> + u32 sel_mask[RPM_SELECT_SIZE] = { 0 };
> + int left;
> + int ret = 0;
> + int i;
> +
> + if (WARN_ON(resource < 0 || resource >= data->n_resources))
> + return -EINVAL;
> +
> + res = &data->resource_table[resource];
> + if (WARN_ON(res->size != count))
> + return -EINVAL;
> +
> + mutex_lock(&rpm->lock);
> +
> + for (i = 0; i < res->size; i++)
> + writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
> +
> + bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
> + for (i = 0; i < ARRAY_SIZE(sel_mask); i++) {
> + writel_relaxed(sel_mask[i],
> + RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i));
> + }
> +
> + writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT));
> +
> + reinit_completion(&rpm->ack);
> + regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
> +
> + left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
> + if (!left)
> + ret = -ETIMEDOUT;
> + else if (rpm->ack_status & RPM_REJECTED)
> + ret = -EIO;
> +
> + mutex_unlock(&rpm->lock);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(qcom_rpm_write);
> +
> +static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
> +{
> + struct qcom_rpm *rpm = dev;
> + u32 ack;
> + int i;
> +
> + ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
> + for (i = 0; i < RPM_SELECT_SIZE; i++)
> + writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i));
> + writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
> +
> + if (ack & RPM_NOTIFICATION) {
> + dev_warn(rpm->dev, "ignoring notification!\n");
> + } else {
> + rpm->ack_status = ack;
> + complete(&rpm->ack);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
> +{
> + struct qcom_rpm *rpm = dev;
> +
> + regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
> + dev_err(rpm->dev, "RPM triggered fatal error\n");
> +
> + return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
> +{
> + return IRQ_HANDLED;
> +}
> +
> +static int qcom_rpm_probe(struct platform_device *pdev)
> +{
> + const struct of_device_id *match;
> + struct device_node *syscon_np;
> + struct resource *res;
> + struct qcom_rpm *rpm;
> + u32 fw_version[3];
> + int irq_wakeup;
> + int irq_ack;
> + int irq_err;
> + int ret;
> +
> + rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
> + if (!rpm)
> + return -ENOMEM;
> +
> + rpm->dev = &pdev->dev;
> + mutex_init(&rpm->lock);
> + init_completion(&rpm->ack);
> +
> + irq_ack = platform_get_irq_byname(pdev, "ack");
> + if (irq_ack < 0) {
> + dev_err(&pdev->dev, "required ack interrupt missing\n");
> + return irq_ack;
> + }
> +
> + irq_err = platform_get_irq_byname(pdev, "err");
> + if (irq_err < 0) {
> + dev_err(&pdev->dev, "required err interrupt missing\n");
> + return irq_err;
> + }
> +
> + irq_wakeup = platform_get_irq_byname(pdev, "wakeup");
> + if (irq_wakeup < 0) {
> + dev_err(&pdev->dev, "required wakeup interrupt missing\n");
> + return irq_wakeup;
> + }
> +
> + match = of_match_device(qcom_rpm_of_match, &pdev->dev);
> + rpm->data = match->data;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(rpm->status_regs))
> + return PTR_ERR(rpm->status_regs);
> + rpm->ctrl_regs = rpm->status_regs + 0x400;
> + rpm->req_regs = rpm->status_regs + 0x600;
> +
> + syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
> + if (!syscon_np) {
> + dev_err(&pdev->dev, "no qcom,ipc node\n");
> + return -ENODEV;
> + }
> +
> + rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
> + if (IS_ERR(rpm->ipc_regmap))
> + return PTR_ERR(rpm->ipc_regmap);
> +
> + ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
> + &rpm->ipc_offset);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "no offset in qcom,ipc\n");
> + return -EINVAL;
> + }
> +
> + ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
> + &rpm->ipc_bit);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "no bit in qcom,ipc\n");
> + return -EINVAL;
> + }
> +
> + dev_set_drvdata(&pdev->dev, rpm);
> +
> + fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
> + fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
> + fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
> + if (fw_version[0] != rpm->data->version) {
> + dev_err(&pdev->dev,
> + "RPM version %u.%u.%u incompatible with driver version %u",
> + fw_version[0],
> + fw_version[1],
> + fw_version[2],
> + rpm->data->version);
> + return -EFAULT;
> + }
> +
> + dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
> + fw_version[1],
> + fw_version[2]);
> +
> + ret = devm_request_irq(&pdev->dev,
> + irq_ack,
> + qcom_rpm_ack_interrupt,
> + IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND,
> + "qcom_rpm_ack",
> + rpm);
> + if (ret) {
> + dev_err(&pdev->dev, "failed to request ack interrupt\n");
> + return ret;
> + }
> +
> + ret = irq_set_irq_wake(irq_ack, 1);
> + if (ret)
> + dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n");
> +
> + ret = devm_request_irq(&pdev->dev,
> + irq_err,
> + qcom_rpm_err_interrupt,
> + IRQF_TRIGGER_RISING,
> + "qcom_rpm_err",
> + rpm);
> + if (ret) {
> + dev_err(&pdev->dev, "failed to request err interrupt\n");
> + return ret;
> + }
> +
> + ret = devm_request_irq(&pdev->dev,
> + irq_wakeup,
> + qcom_rpm_wakeup_interrupt,
> + IRQF_TRIGGER_RISING,
> + "qcom_rpm_wakeup",
> + rpm);
> + if (ret) {
> + dev_err(&pdev->dev, "failed to request wakeup interrupt\n");
> + return ret;
> + }
> +
> + ret = irq_set_irq_wake(irq_wakeup, 1);
> + if (ret)
> + dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n");
> +
> + return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
> +}
> +
> +static int qcom_rpm_remove(struct platform_device *pdev)
> +{
> + of_platform_depopulate(&pdev->dev);
> + return 0;
> +}
> +
> +static struct platform_driver qcom_rpm_driver = {
> + .probe = qcom_rpm_probe,
> + .remove = qcom_rpm_remove,
> + .driver = {
> + .name = "qcom_rpm",
> + .of_match_table = qcom_rpm_of_match,
> + },
> +};
> +
> +static int __init qcom_rpm_init(void)
> +{
> + return platform_driver_register(&qcom_rpm_driver);
> +}
> +arch_initcall(qcom_rpm_init);
> +
> +static void __exit qcom_rpm_exit(void)
> +{
> + platform_driver_unregister(&qcom_rpm_driver);
> +}
> +module_exit(qcom_rpm_exit)
> +
> +MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
> +MODULE_LICENSE("GPL v2");
> +MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
> diff --git a/include/linux/mfd/qcom_rpm.h b/include/linux/mfd/qcom_rpm.h
> new file mode 100644
> index 0000000..742ebf1
> --- /dev/null
> +++ b/include/linux/mfd/qcom_rpm.h
> @@ -0,0 +1,13 @@
> +#ifndef __QCOM_RPM_H__
> +#define __QCOM_RPM_H__
> +
> +#include <linux/types.h>
> +
> +struct qcom_rpm;
> +
> +#define QCOM_RPM_ACTIVE_STATE 0
> +#define QCOM_RPM_SLEEP_STATE 1
> +
> +int qcom_rpm_write(struct qcom_rpm *rpm, int state, int resource, u32 *buf, size_t count);
> +
> +#endif
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
^ permalink raw reply [flat|nested] 31+ messages in thread* [PATCH v8 2/3] mfd: qcom-rpm: Driver for the Qualcomm RPM
@ 2015-01-20 17:02 ` Lee Jones
0 siblings, 0 replies; 31+ messages in thread
From: Lee Jones @ 2015-01-20 17:02 UTC (permalink / raw)
To: linux-arm-kernel
On Wed, 26 Nov 2014, Bjorn Andersson wrote:
> Driver for the Resource Power Manager (RPM) found in Qualcomm 8660, 8960
> and 8064 based devices. The driver exposes resources that child drivers
> can operate on; to implementing regulator, clock and bus frequency
> drivers.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
> ---
>
> Lee, since your Acked-by earlier I've folded in the part of the RFC where I add
> an extra parameter to qcom_rpm_write(). Part of that this is unchanged.
>
> drivers/mfd/Kconfig | 14 ++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/qcom_rpm.c | 581 +++++++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/qcom_rpm.h | 13 +
> 4 files changed, 609 insertions(+)
> create mode 100644 drivers/mfd/qcom_rpm.c
> create mode 100644 include/linux/mfd/qcom_rpm.h
Applied, thanks.
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 1456ea7..b6bcb79 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -567,6 +567,20 @@ config MFD_PM8921_CORE
> Say M here if you want to include support for PM8921 chip as a module.
> This will build a module called "pm8921-core".
>
> +config MFD_QCOM_RPM
> + tristate "Qualcomm Resource Power Manager (RPM)"
> + depends on ARCH_QCOM && OF
> + help
> + If you say yes to this option, support will be included for the
> + Resource Power Manager system found in the Qualcomm 8660, 8960 and
> + 8064 based devices.
> +
> + This is required to access many regulators, clocks and bus
> + frequencies controlled by the RPM on these devices.
> +
> + Say M here if you want to include support for the Qualcomm RPM as a
> + module. This will build a module called "qcom_rpm".
> +
> config MFD_SPMI_PMIC
> tristate "Qualcomm SPMI PMICs"
> depends on ARCH_QCOM || COMPILE_TEST
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 8bd54b1..3364bbc 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o
> obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
> obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o
> obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o
> +obj-$(CONFIG_MFD_QCOM_RPM) += qcom_rpm.o
> obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o
> obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
> obj-$(CONFIG_MFD_TPS65090) += tps65090.o
> diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
> new file mode 100644
> index 0000000..f696328
> --- /dev/null
> +++ b/drivers/mfd/qcom_rpm.c
> @@ -0,0 +1,581 @@
> +/*
> + * Copyright (c) 2014, Sony Mobile Communications AB.
> + * Copyright (c) 2013, The Linux Foundation. All rights reserved.
> + * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 and
> + * only version 2 as published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/of_platform.h>
> +#include <linux/io.h>
> +#include <linux/interrupt.h>
> +#include <linux/mfd/qcom_rpm.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/regmap.h>
> +
> +#include <dt-bindings/mfd/qcom-rpm.h>
> +
> +struct qcom_rpm_resource {
> + unsigned target_id;
> + unsigned status_id;
> + unsigned select_id;
> + unsigned size;
> +};
> +
> +struct qcom_rpm_data {
> + u32 version;
> + const struct qcom_rpm_resource *resource_table;
> + unsigned n_resources;
> +};
> +
> +struct qcom_rpm {
> + struct device *dev;
> + struct regmap *ipc_regmap;
> + unsigned ipc_offset;
> + unsigned ipc_bit;
> +
> + struct completion ack;
> + struct mutex lock;
> +
> + void __iomem *status_regs;
> + void __iomem *ctrl_regs;
> + void __iomem *req_regs;
> +
> + u32 ack_status;
> +
> + const struct qcom_rpm_data *data;
> +};
> +
> +#define RPM_STATUS_REG(rpm, i) ((rpm)->status_regs + (i) * 4)
> +#define RPM_CTRL_REG(rpm, i) ((rpm)->ctrl_regs + (i) * 4)
> +#define RPM_REQ_REG(rpm, i) ((rpm)->req_regs + (i) * 4)
> +
> +#define RPM_REQUEST_TIMEOUT (5 * HZ)
> +
> +#define RPM_REQUEST_CONTEXT 3
> +#define RPM_REQ_SELECT 11
> +#define RPM_ACK_CONTEXT 15
> +#define RPM_ACK_SELECTOR 23
> +#define RPM_SELECT_SIZE 7
> +
> +#define RPM_NOTIFICATION BIT(30)
> +#define RPM_REJECTED BIT(31)
> +
> +#define RPM_SIGNAL BIT(2)
> +
> +static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
> + [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
> + [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
> + [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
> + [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
> + [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
> + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
> + [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
> + [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
> + [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
> + [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
> + [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
> + [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
> + [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
> + [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
> + [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
> + [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
> + [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
> + [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 30 },
> + [QCOM_RPM_MM_FABRIC_HALT] = { 89, 27, 26, 1 },
> + [QCOM_RPM_MM_FABRIC_MODE] = { 91, 28, 27, 1 },
> + [QCOM_RPM_MM_FABRIC_IOCTL] = { 94, 29, 28, 1 },
> + [QCOM_RPM_MM_FABRIC_ARB] = { 95, 30, 29, 21 },
> + [QCOM_RPM_PM8921_SMPS1] = { 116, 31, 30, 2 },
> + [QCOM_RPM_PM8921_SMPS2] = { 118, 33, 31, 2 },
> + [QCOM_RPM_PM8921_SMPS3] = { 120, 35, 32, 2 },
> + [QCOM_RPM_PM8921_SMPS4] = { 122, 37, 33, 2 },
> + [QCOM_RPM_PM8921_SMPS5] = { 124, 39, 34, 2 },
> + [QCOM_RPM_PM8921_SMPS6] = { 126, 41, 35, 2 },
> + [QCOM_RPM_PM8921_SMPS7] = { 128, 43, 36, 2 },
> + [QCOM_RPM_PM8921_SMPS8] = { 130, 45, 37, 2 },
> + [QCOM_RPM_PM8921_LDO1] = { 132, 47, 38, 2 },
> + [QCOM_RPM_PM8921_LDO2] = { 134, 49, 39, 2 },
> + [QCOM_RPM_PM8921_LDO3] = { 136, 51, 40, 2 },
> + [QCOM_RPM_PM8921_LDO4] = { 138, 53, 41, 2 },
> + [QCOM_RPM_PM8921_LDO5] = { 140, 55, 42, 2 },
> + [QCOM_RPM_PM8921_LDO6] = { 142, 57, 43, 2 },
> + [QCOM_RPM_PM8921_LDO7] = { 144, 59, 44, 2 },
> + [QCOM_RPM_PM8921_LDO8] = { 146, 61, 45, 2 },
> + [QCOM_RPM_PM8921_LDO9] = { 148, 63, 46, 2 },
> + [QCOM_RPM_PM8921_LDO10] = { 150, 65, 47, 2 },
> + [QCOM_RPM_PM8921_LDO11] = { 152, 67, 48, 2 },
> + [QCOM_RPM_PM8921_LDO12] = { 154, 69, 49, 2 },
> + [QCOM_RPM_PM8921_LDO13] = { 156, 71, 50, 2 },
> + [QCOM_RPM_PM8921_LDO14] = { 158, 73, 51, 2 },
> + [QCOM_RPM_PM8921_LDO15] = { 160, 75, 52, 2 },
> + [QCOM_RPM_PM8921_LDO16] = { 162, 77, 53, 2 },
> + [QCOM_RPM_PM8921_LDO17] = { 164, 79, 54, 2 },
> + [QCOM_RPM_PM8921_LDO18] = { 166, 81, 55, 2 },
> + [QCOM_RPM_PM8921_LDO19] = { 168, 83, 56, 2 },
> + [QCOM_RPM_PM8921_LDO20] = { 170, 85, 57, 2 },
> + [QCOM_RPM_PM8921_LDO21] = { 172, 87, 58, 2 },
> + [QCOM_RPM_PM8921_LDO22] = { 174, 89, 59, 2 },
> + [QCOM_RPM_PM8921_LDO23] = { 176, 91, 60, 2 },
> + [QCOM_RPM_PM8921_LDO24] = { 178, 93, 61, 2 },
> + [QCOM_RPM_PM8921_LDO25] = { 180, 95, 62, 2 },
> + [QCOM_RPM_PM8921_LDO26] = { 182, 97, 63, 2 },
> + [QCOM_RPM_PM8921_LDO27] = { 184, 99, 64, 2 },
> + [QCOM_RPM_PM8921_LDO28] = { 186, 101, 65, 2 },
> + [QCOM_RPM_PM8921_LDO29] = { 188, 103, 66, 2 },
> + [QCOM_RPM_PM8921_CLK1] = { 190, 105, 67, 2 },
> + [QCOM_RPM_PM8921_CLK2] = { 192, 107, 68, 2 },
> + [QCOM_RPM_PM8921_LVS1] = { 194, 109, 69, 1 },
> + [QCOM_RPM_PM8921_LVS2] = { 195, 110, 70, 1 },
> + [QCOM_RPM_PM8921_LVS3] = { 196, 111, 71, 1 },
> + [QCOM_RPM_PM8921_LVS4] = { 197, 112, 72, 1 },
> + [QCOM_RPM_PM8921_LVS5] = { 198, 113, 73, 1 },
> + [QCOM_RPM_PM8921_LVS6] = { 199, 114, 74, 1 },
> + [QCOM_RPM_PM8921_LVS7] = { 200, 115, 75, 1 },
> + [QCOM_RPM_PM8821_SMPS1] = { 201, 116, 76, 2 },
> + [QCOM_RPM_PM8821_SMPS2] = { 203, 118, 77, 2 },
> + [QCOM_RPM_PM8821_LDO1] = { 205, 120, 78, 2 },
> + [QCOM_RPM_PM8921_NCP] = { 207, 122, 80, 2 },
> + [QCOM_RPM_CXO_BUFFERS] = { 209, 124, 81, 1 },
> + [QCOM_RPM_USB_OTG_SWITCH] = { 210, 125, 82, 1 },
> + [QCOM_RPM_HDMI_SWITCH] = { 211, 126, 83, 1 },
> + [QCOM_RPM_DDR_DMM] = { 212, 127, 84, 2 },
> + [QCOM_RPM_VDDMIN_GPIO] = { 215, 131, 89, 1 },
> +};
> +
> +static const struct qcom_rpm_data apq8064_template = {
> + .version = 3,
> + .resource_table = apq8064_rpm_resource_table,
> + .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
> +};
> +
> +static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
> + [QCOM_RPM_CXO_CLK] = { 32, 12, 5, 1 },
> + [QCOM_RPM_PXO_CLK] = { 33, 13, 6, 1 },
> + [QCOM_RPM_PLL_4] = { 34, 14, 7, 1 },
> + [QCOM_RPM_APPS_FABRIC_CLK] = { 35, 15, 8, 1 },
> + [QCOM_RPM_SYS_FABRIC_CLK] = { 36, 16, 9, 1 },
> + [QCOM_RPM_MM_FABRIC_CLK] = { 37, 17, 10, 1 },
> + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 38, 18, 11, 1 },
> + [QCOM_RPM_SFPB_CLK] = { 39, 19, 12, 1 },
> + [QCOM_RPM_CFPB_CLK] = { 40, 20, 13, 1 },
> + [QCOM_RPM_MMFPB_CLK] = { 41, 21, 14, 1 },
> + [QCOM_RPM_SMI_CLK] = { 42, 22, 15, 1 },
> + [QCOM_RPM_EBI1_CLK] = { 43, 23, 16, 1 },
> + [QCOM_RPM_APPS_L2_CACHE_CTL] = { 44, 24, 17, 1 },
> + [QCOM_RPM_APPS_FABRIC_HALT] = { 45, 25, 18, 2 },
> + [QCOM_RPM_APPS_FABRIC_MODE] = { 47, 26, 19, 3 },
> + [QCOM_RPM_APPS_FABRIC_ARB] = { 51, 28, 21, 6 },
> + [QCOM_RPM_SYS_FABRIC_HALT] = { 63, 29, 22, 2 },
> + [QCOM_RPM_SYS_FABRIC_MODE] = { 65, 30, 23, 3 },
> + [QCOM_RPM_SYS_FABRIC_ARB] = { 69, 32, 25, 22 },
> + [QCOM_RPM_MM_FABRIC_HALT] = { 105, 33, 26, 2 },
> + [QCOM_RPM_MM_FABRIC_MODE] = { 107, 34, 27, 3 },
> + [QCOM_RPM_MM_FABRIC_ARB] = { 111, 36, 29, 23 },
> + [QCOM_RPM_PM8901_SMPS0] = { 134, 37, 30, 2 },
> + [QCOM_RPM_PM8901_SMPS1] = { 136, 39, 31, 2 },
> + [QCOM_RPM_PM8901_SMPS2] = { 138, 41, 32, 2 },
> + [QCOM_RPM_PM8901_SMPS3] = { 140, 43, 33, 2 },
> + [QCOM_RPM_PM8901_SMPS4] = { 142, 45, 34, 2 },
> + [QCOM_RPM_PM8901_LDO0] = { 144, 47, 35, 2 },
> + [QCOM_RPM_PM8901_LDO1] = { 146, 49, 36, 2 },
> + [QCOM_RPM_PM8901_LDO2] = { 148, 51, 37, 2 },
> + [QCOM_RPM_PM8901_LDO3] = { 150, 53, 38, 2 },
> + [QCOM_RPM_PM8901_LDO4] = { 152, 55, 39, 2 },
> + [QCOM_RPM_PM8901_LDO5] = { 154, 57, 40, 2 },
> + [QCOM_RPM_PM8901_LDO6] = { 156, 59, 41, 2 },
> + [QCOM_RPM_PM8901_LVS0] = { 158, 61, 42, 1 },
> + [QCOM_RPM_PM8901_LVS1] = { 159, 62, 43, 1 },
> + [QCOM_RPM_PM8901_LVS2] = { 160, 63, 44, 1 },
> + [QCOM_RPM_PM8901_LVS3] = { 161, 64, 45, 1 },
> + [QCOM_RPM_PM8901_MVS] = { 162, 65, 46, 1 },
> + [QCOM_RPM_PM8058_SMPS0] = { 163, 66, 47, 2 },
> + [QCOM_RPM_PM8058_SMPS1] = { 165, 68, 48, 2 },
> + [QCOM_RPM_PM8058_SMPS2] = { 167, 70, 49, 2 },
> + [QCOM_RPM_PM8058_SMPS3] = { 169, 72, 50, 2 },
> + [QCOM_RPM_PM8058_SMPS4] = { 171, 74, 51, 2 },
> + [QCOM_RPM_PM8058_LDO0] = { 173, 76, 52, 2 },
> + [QCOM_RPM_PM8058_LDO1] = { 175, 78, 53, 2 },
> + [QCOM_RPM_PM8058_LDO2] = { 177, 80, 54, 2 },
> + [QCOM_RPM_PM8058_LDO3] = { 179, 82, 55, 2 },
> + [QCOM_RPM_PM8058_LDO4] = { 181, 84, 56, 2 },
> + [QCOM_RPM_PM8058_LDO5] = { 183, 86, 57, 2 },
> + [QCOM_RPM_PM8058_LDO6] = { 185, 88, 58, 2 },
> + [QCOM_RPM_PM8058_LDO7] = { 187, 90, 59, 2 },
> + [QCOM_RPM_PM8058_LDO8] = { 189, 92, 60, 2 },
> + [QCOM_RPM_PM8058_LDO9] = { 191, 94, 61, 2 },
> + [QCOM_RPM_PM8058_LDO10] = { 193, 96, 62, 2 },
> + [QCOM_RPM_PM8058_LDO11] = { 195, 98, 63, 2 },
> + [QCOM_RPM_PM8058_LDO12] = { 197, 100, 64, 2 },
> + [QCOM_RPM_PM8058_LDO13] = { 199, 102, 65, 2 },
> + [QCOM_RPM_PM8058_LDO14] = { 201, 104, 66, 2 },
> + [QCOM_RPM_PM8058_LDO15] = { 203, 106, 67, 2 },
> + [QCOM_RPM_PM8058_LDO16] = { 205, 108, 68, 2 },
> + [QCOM_RPM_PM8058_LDO17] = { 207, 110, 69, 2 },
> + [QCOM_RPM_PM8058_LDO18] = { 209, 112, 70, 2 },
> + [QCOM_RPM_PM8058_LDO19] = { 211, 114, 71, 2 },
> + [QCOM_RPM_PM8058_LDO20] = { 213, 116, 72, 2 },
> + [QCOM_RPM_PM8058_LDO21] = { 215, 118, 73, 2 },
> + [QCOM_RPM_PM8058_LDO22] = { 217, 120, 74, 2 },
> + [QCOM_RPM_PM8058_LDO23] = { 219, 122, 75, 2 },
> + [QCOM_RPM_PM8058_LDO24] = { 221, 124, 76, 2 },
> + [QCOM_RPM_PM8058_LDO25] = { 223, 126, 77, 2 },
> + [QCOM_RPM_PM8058_LVS0] = { 225, 128, 78, 1 },
> + [QCOM_RPM_PM8058_LVS1] = { 226, 129, 79, 1 },
> + [QCOM_RPM_PM8058_NCP] = { 227, 130, 80, 2 },
> + [QCOM_RPM_CXO_BUFFERS] = { 229, 132, 81, 1 },
> +};
> +
> +static const struct qcom_rpm_data msm8660_template = {
> + .version = 2,
> + .resource_table = msm8660_rpm_resource_table,
> + .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
> +};
> +
> +static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
> + [QCOM_RPM_CXO_CLK] = { 25, 9, 5, 1 },
> + [QCOM_RPM_PXO_CLK] = { 26, 10, 6, 1 },
> + [QCOM_RPM_APPS_FABRIC_CLK] = { 27, 11, 8, 1 },
> + [QCOM_RPM_SYS_FABRIC_CLK] = { 28, 12, 9, 1 },
> + [QCOM_RPM_MM_FABRIC_CLK] = { 29, 13, 10, 1 },
> + [QCOM_RPM_DAYTONA_FABRIC_CLK] = { 30, 14, 11, 1 },
> + [QCOM_RPM_SFPB_CLK] = { 31, 15, 12, 1 },
> + [QCOM_RPM_CFPB_CLK] = { 32, 16, 13, 1 },
> + [QCOM_RPM_MMFPB_CLK] = { 33, 17, 14, 1 },
> + [QCOM_RPM_EBI1_CLK] = { 34, 18, 16, 1 },
> + [QCOM_RPM_APPS_FABRIC_HALT] = { 35, 19, 18, 1 },
> + [QCOM_RPM_APPS_FABRIC_MODE] = { 37, 20, 19, 1 },
> + [QCOM_RPM_APPS_FABRIC_IOCTL] = { 40, 21, 20, 1 },
> + [QCOM_RPM_APPS_FABRIC_ARB] = { 41, 22, 21, 12 },
> + [QCOM_RPM_SYS_FABRIC_HALT] = { 53, 23, 22, 1 },
> + [QCOM_RPM_SYS_FABRIC_MODE] = { 55, 24, 23, 1 },
> + [QCOM_RPM_SYS_FABRIC_IOCTL] = { 58, 25, 24, 1 },
> + [QCOM_RPM_SYS_FABRIC_ARB] = { 59, 26, 25, 29 },
> + [QCOM_RPM_MM_FABRIC_HALT] = { 88, 27, 26, 1 },
> + [QCOM_RPM_MM_FABRIC_MODE] = { 90, 28, 27, 1 },
> + [QCOM_RPM_MM_FABRIC_IOCTL] = { 93, 29, 28, 1 },
> + [QCOM_RPM_MM_FABRIC_ARB] = { 94, 30, 29, 23 },
> + [QCOM_RPM_PM8921_SMPS1] = { 117, 31, 30, 2 },
> + [QCOM_RPM_PM8921_SMPS2] = { 119, 33, 31, 2 },
> + [QCOM_RPM_PM8921_SMPS3] = { 121, 35, 32, 2 },
> + [QCOM_RPM_PM8921_SMPS4] = { 123, 37, 33, 2 },
> + [QCOM_RPM_PM8921_SMPS5] = { 125, 39, 34, 2 },
> + [QCOM_RPM_PM8921_SMPS6] = { 127, 41, 35, 2 },
> + [QCOM_RPM_PM8921_SMPS7] = { 129, 43, 36, 2 },
> + [QCOM_RPM_PM8921_SMPS8] = { 131, 45, 37, 2 },
> + [QCOM_RPM_PM8921_LDO1] = { 133, 47, 38, 2 },
> + [QCOM_RPM_PM8921_LDO2] = { 135, 49, 39, 2 },
> + [QCOM_RPM_PM8921_LDO3] = { 137, 51, 40, 2 },
> + [QCOM_RPM_PM8921_LDO4] = { 139, 53, 41, 2 },
> + [QCOM_RPM_PM8921_LDO5] = { 141, 55, 42, 2 },
> + [QCOM_RPM_PM8921_LDO6] = { 143, 57, 43, 2 },
> + [QCOM_RPM_PM8921_LDO7] = { 145, 59, 44, 2 },
> + [QCOM_RPM_PM8921_LDO8] = { 147, 61, 45, 2 },
> + [QCOM_RPM_PM8921_LDO9] = { 149, 63, 46, 2 },
> + [QCOM_RPM_PM8921_LDO10] = { 151, 65, 47, 2 },
> + [QCOM_RPM_PM8921_LDO11] = { 153, 67, 48, 2 },
> + [QCOM_RPM_PM8921_LDO12] = { 155, 69, 49, 2 },
> + [QCOM_RPM_PM8921_LDO13] = { 157, 71, 50, 2 },
> + [QCOM_RPM_PM8921_LDO14] = { 159, 73, 51, 2 },
> + [QCOM_RPM_PM8921_LDO15] = { 161, 75, 52, 2 },
> + [QCOM_RPM_PM8921_LDO16] = { 163, 77, 53, 2 },
> + [QCOM_RPM_PM8921_LDO17] = { 165, 79, 54, 2 },
> + [QCOM_RPM_PM8921_LDO18] = { 167, 81, 55, 2 },
> + [QCOM_RPM_PM8921_LDO19] = { 169, 83, 56, 2 },
> + [QCOM_RPM_PM8921_LDO20] = { 171, 85, 57, 2 },
> + [QCOM_RPM_PM8921_LDO21] = { 173, 87, 58, 2 },
> + [QCOM_RPM_PM8921_LDO22] = { 175, 89, 59, 2 },
> + [QCOM_RPM_PM8921_LDO23] = { 177, 91, 60, 2 },
> + [QCOM_RPM_PM8921_LDO24] = { 179, 93, 61, 2 },
> + [QCOM_RPM_PM8921_LDO25] = { 181, 95, 62, 2 },
> + [QCOM_RPM_PM8921_LDO26] = { 183, 97, 63, 2 },
> + [QCOM_RPM_PM8921_LDO27] = { 185, 99, 64, 2 },
> + [QCOM_RPM_PM8921_LDO28] = { 187, 101, 65, 2 },
> + [QCOM_RPM_PM8921_LDO29] = { 189, 103, 66, 2 },
> + [QCOM_RPM_PM8921_CLK1] = { 191, 105, 67, 2 },
> + [QCOM_RPM_PM8921_CLK2] = { 193, 107, 68, 2 },
> + [QCOM_RPM_PM8921_LVS1] = { 195, 109, 69, 1 },
> + [QCOM_RPM_PM8921_LVS2] = { 196, 110, 70, 1 },
> + [QCOM_RPM_PM8921_LVS3] = { 197, 111, 71, 1 },
> + [QCOM_RPM_PM8921_LVS4] = { 198, 112, 72, 1 },
> + [QCOM_RPM_PM8921_LVS5] = { 199, 113, 73, 1 },
> + [QCOM_RPM_PM8921_LVS6] = { 200, 114, 74, 1 },
> + [QCOM_RPM_PM8921_LVS7] = { 201, 115, 75, 1 },
> + [QCOM_RPM_PM8921_NCP] = { 202, 116, 80, 2 },
> + [QCOM_RPM_CXO_BUFFERS] = { 204, 118, 81, 1 },
> + [QCOM_RPM_USB_OTG_SWITCH] = { 205, 119, 82, 1 },
> + [QCOM_RPM_HDMI_SWITCH] = { 206, 120, 83, 1 },
> + [QCOM_RPM_DDR_DMM] = { 207, 121, 84, 2 },
> +};
> +
> +static const struct qcom_rpm_data msm8960_template = {
> + .version = 3,
> + .resource_table = msm8960_rpm_resource_table,
> + .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
> +};
> +
> +static const struct of_device_id qcom_rpm_of_match[] = {
> + { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
> + { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
> + { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
> +
> +int qcom_rpm_write(struct qcom_rpm *rpm,
> + int state,
> + int resource,
> + u32 *buf, size_t count)
> +{
> + const struct qcom_rpm_resource *res;
> + const struct qcom_rpm_data *data = rpm->data;
> + u32 sel_mask[RPM_SELECT_SIZE] = { 0 };
> + int left;
> + int ret = 0;
> + int i;
> +
> + if (WARN_ON(resource < 0 || resource >= data->n_resources))
> + return -EINVAL;
> +
> + res = &data->resource_table[resource];
> + if (WARN_ON(res->size != count))
> + return -EINVAL;
> +
> + mutex_lock(&rpm->lock);
> +
> + for (i = 0; i < res->size; i++)
> + writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
> +
> + bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
> + for (i = 0; i < ARRAY_SIZE(sel_mask); i++) {
> + writel_relaxed(sel_mask[i],
> + RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i));
> + }
> +
> + writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT));
> +
> + reinit_completion(&rpm->ack);
> + regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
> +
> + left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
> + if (!left)
> + ret = -ETIMEDOUT;
> + else if (rpm->ack_status & RPM_REJECTED)
> + ret = -EIO;
> +
> + mutex_unlock(&rpm->lock);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(qcom_rpm_write);
> +
> +static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
> +{
> + struct qcom_rpm *rpm = dev;
> + u32 ack;
> + int i;
> +
> + ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
> + for (i = 0; i < RPM_SELECT_SIZE; i++)
> + writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i));
> + writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
> +
> + if (ack & RPM_NOTIFICATION) {
> + dev_warn(rpm->dev, "ignoring notification!\n");
> + } else {
> + rpm->ack_status = ack;
> + complete(&rpm->ack);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
> +{
> + struct qcom_rpm *rpm = dev;
> +
> + regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
> + dev_err(rpm->dev, "RPM triggered fatal error\n");
> +
> + return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
> +{
> + return IRQ_HANDLED;
> +}
> +
> +static int qcom_rpm_probe(struct platform_device *pdev)
> +{
> + const struct of_device_id *match;
> + struct device_node *syscon_np;
> + struct resource *res;
> + struct qcom_rpm *rpm;
> + u32 fw_version[3];
> + int irq_wakeup;
> + int irq_ack;
> + int irq_err;
> + int ret;
> +
> + rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
> + if (!rpm)
> + return -ENOMEM;
> +
> + rpm->dev = &pdev->dev;
> + mutex_init(&rpm->lock);
> + init_completion(&rpm->ack);
> +
> + irq_ack = platform_get_irq_byname(pdev, "ack");
> + if (irq_ack < 0) {
> + dev_err(&pdev->dev, "required ack interrupt missing\n");
> + return irq_ack;
> + }
> +
> + irq_err = platform_get_irq_byname(pdev, "err");
> + if (irq_err < 0) {
> + dev_err(&pdev->dev, "required err interrupt missing\n");
> + return irq_err;
> + }
> +
> + irq_wakeup = platform_get_irq_byname(pdev, "wakeup");
> + if (irq_wakeup < 0) {
> + dev_err(&pdev->dev, "required wakeup interrupt missing\n");
> + return irq_wakeup;
> + }
> +
> + match = of_match_device(qcom_rpm_of_match, &pdev->dev);
> + rpm->data = match->data;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(rpm->status_regs))
> + return PTR_ERR(rpm->status_regs);
> + rpm->ctrl_regs = rpm->status_regs + 0x400;
> + rpm->req_regs = rpm->status_regs + 0x600;
> +
> + syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
> + if (!syscon_np) {
> + dev_err(&pdev->dev, "no qcom,ipc node\n");
> + return -ENODEV;
> + }
> +
> + rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
> + if (IS_ERR(rpm->ipc_regmap))
> + return PTR_ERR(rpm->ipc_regmap);
> +
> + ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
> + &rpm->ipc_offset);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "no offset in qcom,ipc\n");
> + return -EINVAL;
> + }
> +
> + ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
> + &rpm->ipc_bit);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "no bit in qcom,ipc\n");
> + return -EINVAL;
> + }
> +
> + dev_set_drvdata(&pdev->dev, rpm);
> +
> + fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
> + fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
> + fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
> + if (fw_version[0] != rpm->data->version) {
> + dev_err(&pdev->dev,
> + "RPM version %u.%u.%u incompatible with driver version %u",
> + fw_version[0],
> + fw_version[1],
> + fw_version[2],
> + rpm->data->version);
> + return -EFAULT;
> + }
> +
> + dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
> + fw_version[1],
> + fw_version[2]);
> +
> + ret = devm_request_irq(&pdev->dev,
> + irq_ack,
> + qcom_rpm_ack_interrupt,
> + IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND,
> + "qcom_rpm_ack",
> + rpm);
> + if (ret) {
> + dev_err(&pdev->dev, "failed to request ack interrupt\n");
> + return ret;
> + }
> +
> + ret = irq_set_irq_wake(irq_ack, 1);
> + if (ret)
> + dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n");
> +
> + ret = devm_request_irq(&pdev->dev,
> + irq_err,
> + qcom_rpm_err_interrupt,
> + IRQF_TRIGGER_RISING,
> + "qcom_rpm_err",
> + rpm);
> + if (ret) {
> + dev_err(&pdev->dev, "failed to request err interrupt\n");
> + return ret;
> + }
> +
> + ret = devm_request_irq(&pdev->dev,
> + irq_wakeup,
> + qcom_rpm_wakeup_interrupt,
> + IRQF_TRIGGER_RISING,
> + "qcom_rpm_wakeup",
> + rpm);
> + if (ret) {
> + dev_err(&pdev->dev, "failed to request wakeup interrupt\n");
> + return ret;
> + }
> +
> + ret = irq_set_irq_wake(irq_wakeup, 1);
> + if (ret)
> + dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n");
> +
> + return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
> +}
> +
> +static int qcom_rpm_remove(struct platform_device *pdev)
> +{
> + of_platform_depopulate(&pdev->dev);
> + return 0;
> +}
> +
> +static struct platform_driver qcom_rpm_driver = {
> + .probe = qcom_rpm_probe,
> + .remove = qcom_rpm_remove,
> + .driver = {
> + .name = "qcom_rpm",
> + .of_match_table = qcom_rpm_of_match,
> + },
> +};
> +
> +static int __init qcom_rpm_init(void)
> +{
> + return platform_driver_register(&qcom_rpm_driver);
> +}
> +arch_initcall(qcom_rpm_init);
> +
> +static void __exit qcom_rpm_exit(void)
> +{
> + platform_driver_unregister(&qcom_rpm_driver);
> +}
> +module_exit(qcom_rpm_exit)
> +
> +MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
> +MODULE_LICENSE("GPL v2");
> +MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
> diff --git a/include/linux/mfd/qcom_rpm.h b/include/linux/mfd/qcom_rpm.h
> new file mode 100644
> index 0000000..742ebf1
> --- /dev/null
> +++ b/include/linux/mfd/qcom_rpm.h
> @@ -0,0 +1,13 @@
> +#ifndef __QCOM_RPM_H__
> +#define __QCOM_RPM_H__
> +
> +#include <linux/types.h>
> +
> +struct qcom_rpm;
> +
> +#define QCOM_RPM_ACTIVE_STATE 0
> +#define QCOM_RPM_SLEEP_STATE 1
> +
> +int qcom_rpm_write(struct qcom_rpm *rpm, int state, int resource, u32 *buf, size_t count);
> +
> +#endif
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org ? Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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