* Re: [PATCH] Input: synaptics-rmi4: Use %pe for error codes.
From: Michał Mirosław @ 2023-05-05 20:48 UTC (permalink / raw)
To: Dmitry Torokhov; +Cc: linux-input
In-Reply-To: <ZFBcF0ZcBfMFdZLu@google.com>
On Mon, May 01, 2023 at 05:40:55PM -0700, Dmitry Torokhov wrote:
> On Sat, Apr 29, 2023 at 08:41:19PM +0200, Michał Mirosław wrote:
> > Make the error messages a bit easier to understand by showing
> > error names where that's enabled.
> >
> > Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
> > ---
> > drivers/input/rmi4/rmi_driver.c | 66 +++++++++++++++++----------------
> > 1 file changed, 34 insertions(+), 32 deletions(-)
> >
> > diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
> > index 258d5fe3d395..82d85c02a873 100644
> > --- a/drivers/input/rmi4/rmi_driver.c
> > +++ b/drivers/input/rmi4/rmi_driver.c
> > @@ -69,8 +69,8 @@ static int reset_one_function(struct rmi_function *fn)
> > if (fh->reset) {
> > retval = fh->reset(fn);
> > if (retval < 0)
> > - dev_err(&fn->dev, "Reset failed with code %d.\n",
> > - retval);
> > + dev_err(&fn->dev, "Reset failed: %pe\n",
> > + ERR_PTR(retval));
>
> If this is desired we should have a format option for
> non-err-ptr-encoded errors.
This is a common case in the kernel source to use "%pe" with ERR_PTR().
The code in `lib/vsprintf.c` has only '%p' with extended treatment and
I'm not sure how much work would be needed to extend other format
specifier (I would consider confusing if "%p" would possibly take
something that's not a pointer).
Best Regards
Michał Mirosław
^ permalink raw reply
* Re: [PATCH] Input: edt-ft5x06: Add delay after waking up
From: Dmitry Torokhov @ 2023-05-05 18:48 UTC (permalink / raw)
To: Philipp Puschmann; +Cc: linux-input, dario.binacchi, michael
In-Reply-To: <20230505115823.545803-1-p.puschmann@pironex.com>
On Fri, May 05, 2023 at 01:58:24PM +0200, Philipp Puschmann wrote:
> The touch controller needs some time to wake-up after setting the wake-up
> gpio. Without having a delay after wake-up probing regularly fails in
> edt_ft5x06_ts_identify() with an error (i.e. EREMOTEIO) that was caused
> by a failed i2c transfer.
>
> The datasheet sets the wake-up time to 5 ms, although it is not entirely
> clear.
>
> Signed-off-by: Philipp Puschmann <p.puschmann@pironex.com>
Applied, thank you.
--
Dmitry
^ permalink raw reply
* Re: [PATCH v3 1/1] Input: cyttsp5 - implement proper sleep and wakeup procedures
From: Dmitry Torokhov @ 2023-05-05 18:48 UTC (permalink / raw)
To: Maximilian Weigand
Cc: Linus Walleij, Rob Herring, Krzysztof Kozlowski, linux-input,
linux-kernel, devicetree, Maximilian Weigand, Alistair Francis
In-Reply-To: <20230504120316.408687-2-mweigand2017@gmail.com>
Hi Maximilian,
On Thu, May 04, 2023 at 02:03:16PM +0200, Maximilian Weigand wrote:
> +static int cyttsp5_enter_sleep(struct cyttsp5 *ts)
...
> +static int cyttsp5_wakeup(struct cyttsp5 *ts)
These 2 look like twins, I collapsed them into cyttsp5_power_control()
and applied the patch, thank you.
--
Dmitry
^ permalink raw reply
* Re: [PATCH v3 1/3] Input: ads7846 - Convert to use software nodes
From: Dmitry Torokhov @ 2023-05-05 18:08 UTC (permalink / raw)
To: Linus Walleij
Cc: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Mark Brown, Bartosz Golaszewski, Andreas Kemnade, Helge Deller,
Ulf Hansson, linux-omap, linux-arm-kernel, linux-kernel,
linux-mips, linux-input, linux-spi, linux-fbdev, dri-devel,
linux-mmc
In-Reply-To: <20230430-nokia770-regression-v3-1-a6d0a89ffa8b@linaro.org>
Hi Linus,
On Fri, May 05, 2023 at 01:16:55PM +0200, Linus Walleij wrote:
>
> Populate the devices on the Nokia 770 CBUS I2C using software
> nodes instead of platform data quirks. This includes the LCD
> and the ADS7846 touchscreen so the conversion just brings the LCD
> along with it as software nodes is an all-or-nothing design
> pattern.
Wow, so that worked , awesome!
> +static const struct property_entry nokia770_ads7846_props[] = {
> + PROPERTY_ENTRY_U32("touchscreen-size-x", 4096),
> + PROPERTY_ENTRY_U32("touchscreen-size-y", 4096),
> + PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256),
> + PROPERTY_ENTRY_U32("touchscreen-average-samples", 10),
> + PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180),
> + PROPERTY_ENTRY_U16("ti,debounce-tol", 3),
> + PROPERTY_ENTRY_U16("ti,debounce-rep", 1),
> + PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node,
> + ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_HIGH),
Looking at the driver this actually needs to be GPIO_ACTIVE_LOW.
>
> +static struct gpiod_lookup_table spitz_ads7846_gpio_table = {
> + .dev_id = "spi2.0",
> + .table = {
> + GPIO_LOOKUP("gpio-pxa", SPITZ_GPIO_TP_INT,
> + "pendown", GPIO_ACTIVE_HIGH),
GPIO_ACTIVE_LOW here too.
> +static struct gpiod_lookup_table db1100_touch_gpio_table = {
> + .dev_id = "spi0.0",
> + .table = {
> + GPIO_LOOKUP("alchemy-gpio2", 21,
> + "pendown", GPIO_ACTIVE_HIGH),
And here as well.
> @@ -223,7 +220,7 @@ static int get_pendown_state(struct ads7846 *ts)
> if (ts->get_pendown_state)
> return ts->get_pendown_state();
>
> - return !gpio_get_value(ts->gpio_pendown);
> + return !gpiod_get_value(ts->gpio_pendown);
This needs to be
return !gpiod_get_value_raw(ts->gpio_pendown);
I looked at various DTSes we have and they use a mix of active high and
active low annotations, so we have to go with the "raw" variant for now,
and then update to normal one once we update bad DTSes.
Thanks!
--
Dmitry
^ permalink raw reply
* [PATCH] Input: edt-ft5x06: Add delay after waking up
From: Philipp Puschmann @ 2023-05-05 11:58 UTC (permalink / raw)
To: linux-input; +Cc: dmitry.torokhov, dario.binacchi, michael, Philipp Puschmann
The touch controller needs some time to wake-up after setting the wake-up
gpio. Without having a delay after wake-up probing regularly fails in
edt_ft5x06_ts_identify() with an error (i.e. EREMOTEIO) that was caused
by a failed i2c transfer.
The datasheet sets the wake-up time to 5 ms, although it is not entirely
clear.
Signed-off-by: Philipp Puschmann <p.puschmann@pironex.com>
---
drivers/input/touchscreen/edt-ft5x06.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c
index 24ab9e9f5b21..3a1a5e76cd68 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -1241,6 +1241,7 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client)
if (tsdata->wake_gpio) {
usleep_range(5000, 6000);
gpiod_set_value_cansleep(tsdata->wake_gpio, 1);
+ usleep_range(5000, 6000);
}
if (tsdata->reset_gpio) {
--
2.40.0
^ permalink raw reply related
* [PATCH v3 3/3] ARM: omap1: Fix up the Nokia 770 board device IRQs
From: Linus Walleij @ 2023-05-05 11:16 UTC (permalink / raw)
To: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Dmitry Torokhov, Mark Brown, Bartosz Golaszewski, Andreas Kemnade,
Helge Deller, Ulf Hansson
Cc: linux-omap, linux-arm-kernel, linux-kernel, linux-mips,
linux-input, linux-spi, linux-fbdev, dri-devel, linux-mmc,
Linus Walleij
In-Reply-To: <20230430-nokia770-regression-v3-0-a6d0a89ffa8b@linaro.org>
The platform devices on the Nokia 770 is using some
board-specific IRQs that get statically assigned to platform
devices in the boardfile.
This does not work with dynamic IRQ chip bases.
Utilize the NULL device to define some board-specific
GPIO lookups and use these to immediately look up the
same GPIOs, convert to IRQ numbers and pass as resources
to the devices. This is ugly but should work.
Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/mach-omap1/board-nokia770.c | 57 ++++++++++++++++++++++++++++--------
1 file changed, 44 insertions(+), 13 deletions(-)
diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index dc37ea30bbcf..27bd5522e1de 100644
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -6,7 +6,7 @@
*/
#include <linux/clkdev.h>
#include <linux/irq.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/gpio/machine.h>
#include <linux/gpio/property.h>
#include <linux/kernel.h>
@@ -250,19 +250,25 @@ static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
static void __init nokia770_cbus_init(void)
{
- const int retu_irq_gpio = 62;
- const int tahvo_irq_gpio = 40;
-
- if (gpio_request_one(retu_irq_gpio, GPIOF_IN, "Retu IRQ"))
- return;
- if (gpio_request_one(tahvo_irq_gpio, GPIOF_IN, "Tahvo IRQ")) {
- gpio_free(retu_irq_gpio);
- return;
+ struct gpio_desc *d;
+ int irq;
+
+ d = gpiod_get(NULL, "retu_irq", GPIOD_IN);
+ if (IS_ERR(d)) {
+ pr_err("Unable to get CBUS Retu IRQ GPIO descriptor\n");
+ } else {
+ irq = gpiod_to_irq(d);
+ irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+ nokia770_i2c_board_info_2[0].irq = irq;
+ }
+ d = gpiod_get(NULL, "tahvo_irq", GPIOD_IN);
+ if (IS_ERR(d)) {
+ pr_err("Unable to get CBUS Tahvo IRQ GPIO descriptor\n");
+ } else {
+ irq = gpiod_to_irq(d);
+ irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+ nokia770_i2c_board_info_2[1].irq = irq;
}
- irq_set_irq_type(gpio_to_irq(retu_irq_gpio), IRQ_TYPE_EDGE_RISING);
- irq_set_irq_type(gpio_to_irq(tahvo_irq_gpio), IRQ_TYPE_EDGE_RISING);
- nokia770_i2c_board_info_2[0].irq = gpio_to_irq(retu_irq_gpio);
- nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio);
i2c_register_board_info(2, nokia770_i2c_board_info_2,
ARRAY_SIZE(nokia770_i2c_board_info_2));
device_create_managed_software_node(&nokia770_cbus_device.dev,
@@ -275,8 +281,25 @@ static void __init nokia770_cbus_init(void)
}
#endif /* CONFIG_I2C_CBUS_GPIO */
+static struct gpiod_lookup_table nokia770_irq_gpio_table = {
+ .dev_id = NULL,
+ .table = {
+ /* GPIO used by SPI device 1 */
+ GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
+ GPIO_ACTIVE_HIGH),
+ /* GPIO used for retu IRQ */
+ GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
+ GPIO_ACTIVE_HIGH),
+ /* GPIO used for tahvo IRQ */
+ GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
+ GPIO_ACTIVE_HIGH),
+ },
+};
+
static void __init omap_nokia770_init(void)
{
+ struct gpio_desc *d;
+
/* On Nokia 770, the SleepX signal is masked with an
* MPUIO line by default. It has to be unmasked for it
* to become functional */
@@ -288,6 +311,14 @@ static void __init omap_nokia770_init(void)
software_node_register_node_group(nokia770_gpiochip_nodes);
platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
+
+ gpiod_add_lookup_table(&nokia770_irq_gpio_table);
+ d = gpiod_get(NULL, "ads7846_irq", GPIOD_IN);
+ if (IS_ERR(d))
+ pr_err("Unable to get ADS7846 IRQ GPIO descriptor\n");
+ else
+ nokia770_spi_board_info[1].irq = gpiod_to_irq(d);
+
spi_register_board_info(nokia770_spi_board_info,
ARRAY_SIZE(nokia770_spi_board_info));
omap_serial_init();
--
2.34.1
^ permalink raw reply related
* [PATCH v3 2/3] ARM/mmc: Convert old mmci-omap to GPIO descriptors
From: Linus Walleij @ 2023-05-05 11:16 UTC (permalink / raw)
To: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Dmitry Torokhov, Mark Brown, Bartosz Golaszewski, Andreas Kemnade,
Helge Deller, Ulf Hansson
Cc: linux-omap, linux-arm-kernel, linux-kernel, linux-mips,
linux-input, linux-spi, linux-fbdev, dri-devel, linux-mmc,
Linus Walleij
In-Reply-To: <20230430-nokia770-regression-v3-0-a6d0a89ffa8b@linaro.org>
A recent change to the OMAP driver making it use a dynamic GPIO
base created problems with some old OMAP1 board files, among
them Nokia 770, SX1 and also the OMAP2 Nokia n8x0.
Fix up all instances of GPIOs being used for the MMC driver
by pushing the handling of power, slot selection and MMC
"cover" into the driver as optional GPIOs.
This is maybe not the most perfect solution as the MMC
framework have some central handlers for some of the
stuff, but it at least makes the situtation better and
solves the immediate issue.
Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base")
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/mach-omap1/board-nokia770.c | 43 ++++++-----------
arch/arm/mach-omap1/board-sx1-mmc.c | 1 -
arch/arm/mach-omap2/board-n8x0.c | 85 +++++++++++-----------------------
drivers/mmc/host/omap.c | 46 +++++++++++++++++-
include/linux/platform_data/mmc-omap.h | 2 -
5 files changed, 83 insertions(+), 94 deletions(-)
diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index 918e86634bc9..dc37ea30bbcf 100644
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -183,27 +183,23 @@ static struct omap_usb_config nokia770_usb_config __initdata = {
#if IS_ENABLED(CONFIG_MMC_OMAP)
-#define NOKIA770_GPIO_MMC_POWER 41
-#define NOKIA770_GPIO_MMC_SWITCH 23
-
-static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
- int vdd)
-{
- gpio_set_value(NOKIA770_GPIO_MMC_POWER, power_on);
- return 0;
-}
-
-static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
-{
- return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
-}
+static struct gpiod_lookup_table nokia770_mmc_gpio_table = {
+ .dev_id = "mmci-omap",
+ .table = {
+ /* Slot index 0, VSD power, GPIO 41 */
+ GPIO_LOOKUP_IDX("gpio-32-47", 9,
+ "vsd", 0, GPIO_ACTIVE_HIGH),
+ /* Slot index 0, switch, GPIO 23 */
+ GPIO_LOOKUP_IDX("gpio-16-31", 7,
+ "cover", 0, GPIO_ACTIVE_HIGH),
+ { }
+ },
+};
static struct omap_mmc_platform_data nokia770_mmc2_data = {
.nr_slots = 1,
.max_freq = 12000000,
.slots[0] = {
- .set_power = nokia770_mmc_set_power,
- .get_cover_state = nokia770_mmc_get_cover_state,
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.name = "mmcblk",
},
@@ -213,20 +209,7 @@ static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
static void __init nokia770_mmc_init(void)
{
- int ret;
-
- ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
- if (ret < 0)
- return;
- gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
-
- ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
- if (ret < 0) {
- gpio_free(NOKIA770_GPIO_MMC_POWER);
- return;
- }
- gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
-
+ gpiod_add_lookup_table(&nokia770_mmc_gpio_table);
/* Only the second MMC controller is used */
nokia770_mmc_data[1] = &nokia770_mmc2_data;
omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
diff --git a/arch/arm/mach-omap1/board-sx1-mmc.c b/arch/arm/mach-omap1/board-sx1-mmc.c
index f1c160924dfe..f183a8448a7b 100644
--- a/arch/arm/mach-omap1/board-sx1-mmc.c
+++ b/arch/arm/mach-omap1/board-sx1-mmc.c
@@ -9,7 +9,6 @@
* Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
*/
-#include <linux/gpio.h>
#include <linux/platform_device.h>
#include "hardware.h"
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
index 3353b0a923d9..baa2f0341aed 100644
--- a/arch/arm/mach-omap2/board-n8x0.c
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -11,6 +11,7 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/irq.h>
@@ -170,22 +171,32 @@ static struct spi_board_info n800_spi_board_info[] __initdata = {
* GPIO23 and GPIO9 slot 2 EMMC on N810
*
*/
-#define N8X0_SLOT_SWITCH_GPIO 96
-#define N810_EMMC_VSD_GPIO 23
-#define N810_EMMC_VIO_GPIO 9
-
static int slot1_cover_open;
static int slot2_cover_open;
static struct device *mmc_device;
-static int n8x0_mmc_switch_slot(struct device *dev, int slot)
-{
-#ifdef CONFIG_MMC_DEBUG
- dev_dbg(dev, "Choose slot %d\n", slot + 1);
-#endif
- gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
- return 0;
-}
+static struct gpiod_lookup_table nokia8xx_mmc_gpio_table = {
+ .dev_id = "mmci-omap",
+ .table = {
+ /* Slot switch, GPIO 96 */
+ GPIO_LOOKUP("gpio-80-111", 16,
+ "switch", GPIO_ACTIVE_HIGH),
+ { }
+ },
+};
+
+static struct gpiod_lookup_table nokia810_mmc_gpio_table = {
+ .dev_id = "mmci-omap",
+ .table = {
+ /* Slot index 1, VSD power, GPIO 23 */
+ GPIO_LOOKUP_IDX("gpio-16-31", 7,
+ "vsd", 1, GPIO_ACTIVE_HIGH),
+ /* Slot index 1, VIO power, GPIO 9 */
+ GPIO_LOOKUP_IDX("gpio-0-15", 9,
+ "vsd", 1, GPIO_ACTIVE_HIGH),
+ { }
+ },
+};
static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
int power_on, int vdd)
@@ -256,31 +267,13 @@ static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
return 0;
}
-static void n810_set_power_emmc(struct device *dev,
- int power_on)
-{
- dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
-
- if (power_on) {
- gpio_set_value(N810_EMMC_VSD_GPIO, 1);
- msleep(1);
- gpio_set_value(N810_EMMC_VIO_GPIO, 1);
- msleep(1);
- } else {
- gpio_set_value(N810_EMMC_VIO_GPIO, 0);
- msleep(50);
- gpio_set_value(N810_EMMC_VSD_GPIO, 0);
- msleep(50);
- }
-}
-
static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
int vdd)
{
if (board_is_n800() || slot == 0)
return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
- n810_set_power_emmc(dev, power_on);
+ /* The n810 power will be handled by GPIO code in the driver */
return 0;
}
@@ -418,13 +411,6 @@ static void n8x0_mmc_shutdown(struct device *dev)
static void n8x0_mmc_cleanup(struct device *dev)
{
menelaus_unregister_mmc_callback();
-
- gpio_free(N8X0_SLOT_SWITCH_GPIO);
-
- if (board_is_n810()) {
- gpio_free(N810_EMMC_VSD_GPIO);
- gpio_free(N810_EMMC_VIO_GPIO);
- }
}
/*
@@ -433,7 +419,6 @@ static void n8x0_mmc_cleanup(struct device *dev)
*/
static struct omap_mmc_platform_data mmc1_data = {
.nr_slots = 0,
- .switch_slot = n8x0_mmc_switch_slot,
.init = n8x0_mmc_late_init,
.cleanup = n8x0_mmc_cleanup,
.shutdown = n8x0_mmc_shutdown,
@@ -463,14 +448,9 @@ static struct omap_mmc_platform_data mmc1_data = {
static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
-static struct gpio n810_emmc_gpios[] __initdata = {
- { N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" },
- { N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" },
-};
-
static void __init n8x0_mmc_init(void)
{
- int err;
+ gpiod_add_lookup_table(&nokia8xx_mmc_gpio_table);
if (board_is_n810()) {
mmc1_data.slots[0].name = "external";
@@ -483,20 +463,7 @@ static void __init n8x0_mmc_init(void)
*/
mmc1_data.slots[1].name = "internal";
mmc1_data.slots[1].ban_openended = 1;
- }
-
- err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
- "MMC slot switch");
- if (err)
- return;
-
- if (board_is_n810()) {
- err = gpio_request_array(n810_emmc_gpios,
- ARRAY_SIZE(n810_emmc_gpios));
- if (err) {
- gpio_free(N8X0_SLOT_SWITCH_GPIO);
- return;
- }
+ gpiod_add_lookup_table(&nokia810_mmc_gpio_table);
}
mmc1_data.nr_slots = 2;
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index ce78edfb402b..a14af21f12da 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -26,6 +26,7 @@
#include <linux/clk.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
+#include <linux/gpio/consumer.h>
#include <linux/platform_data/mmc-omap.h>
@@ -111,6 +112,9 @@ struct mmc_omap_slot {
struct mmc_request *mrq;
struct mmc_omap_host *host;
struct mmc_host *mmc;
+ struct gpio_desc *vsd;
+ struct gpio_desc *vio;
+ struct gpio_desc *cover;
struct omap_mmc_slot_data *pdata;
};
@@ -133,6 +137,7 @@ struct mmc_omap_host {
int irq;
unsigned char bus_mode;
unsigned int reg_shift;
+ struct gpio_desc *slot_switch;
struct work_struct cmd_abort_work;
unsigned abort:1;
@@ -216,8 +221,13 @@ static void mmc_omap_select_slot(struct mmc_omap_slot *slot, int claimed)
if (host->current_slot != slot) {
OMAP_MMC_WRITE(host, CON, slot->saved_con & 0xFC00);
- if (host->pdata->switch_slot != NULL)
- host->pdata->switch_slot(mmc_dev(slot->mmc), slot->id);
+ if (host->slot_switch)
+ /*
+ * With two slots and a simple GPIO switch, setting
+ * the GPIO to 0 selects slot ID 0, setting it to 1
+ * selects slot ID 1.
+ */
+ gpiod_set_value(host->slot_switch, slot->id);
host->current_slot = slot;
}
@@ -297,6 +307,9 @@ static void mmc_omap_release_slot(struct mmc_omap_slot *slot, int clk_enabled)
static inline
int mmc_omap_cover_is_open(struct mmc_omap_slot *slot)
{
+ /* If we have a GPIO then use that */
+ if (slot->cover)
+ return gpiod_get_value(slot->cover);
if (slot->pdata->get_cover_state)
return slot->pdata->get_cover_state(mmc_dev(slot->mmc),
slot->id);
@@ -1106,6 +1119,11 @@ static void mmc_omap_set_power(struct mmc_omap_slot *slot, int power_on,
host = slot->host;
+ if (slot->vsd)
+ gpiod_set_value(slot->vsd, power_on);
+ if (slot->vio)
+ gpiod_set_value(slot->vio, power_on);
+
if (slot->pdata->set_power != NULL)
slot->pdata->set_power(mmc_dev(slot->mmc), slot->id, power_on,
vdd);
@@ -1240,6 +1258,23 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id)
slot->power_mode = MMC_POWER_UNDEFINED;
slot->pdata = &host->pdata->slots[id];
+ /* Check for some optional GPIO controls */
+ slot->vsd = gpiod_get_index_optional(host->dev, "vsd",
+ id, GPIOD_OUT_LOW);
+ if (IS_ERR(slot->vsd))
+ return dev_err_probe(host->dev, PTR_ERR(slot->vsd),
+ "error looking up VSD GPIO\n");
+ slot->vio = gpiod_get_index_optional(host->dev, "vio",
+ id, GPIOD_OUT_LOW);
+ if (IS_ERR(slot->vio))
+ return dev_err_probe(host->dev, PTR_ERR(slot->vio),
+ "error looking up VIO GPIO\n");
+ slot->cover = gpiod_get_index_optional(host->dev, "cover",
+ id, GPIOD_IN);
+ if (IS_ERR(slot->cover))
+ return dev_err_probe(host->dev, PTR_ERR(slot->cover),
+ "error looking up cover switch GPIO\n");
+
host->slots[id] = slot;
mmc->caps = 0;
@@ -1349,6 +1384,13 @@ static int mmc_omap_probe(struct platform_device *pdev)
if (IS_ERR(host->virt_base))
return PTR_ERR(host->virt_base);
+ host->slot_switch = gpiod_get_optional(host->dev, "switch",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(host->slot_switch))
+ return dev_err_probe(host->dev, PTR_ERR(host->slot_switch),
+ "error looking up slot switch GPIO\n");
+
+
INIT_WORK(&host->slot_release_work, mmc_omap_slot_release_work);
INIT_WORK(&host->send_stop_work, mmc_omap_send_stop_work);
diff --git a/include/linux/platform_data/mmc-omap.h b/include/linux/platform_data/mmc-omap.h
index 91051e9907f3..054d0c3c5ec5 100644
--- a/include/linux/platform_data/mmc-omap.h
+++ b/include/linux/platform_data/mmc-omap.h
@@ -20,8 +20,6 @@ struct omap_mmc_platform_data {
* maximum frequency on the MMC bus */
unsigned int max_freq;
- /* switch the bus to a new slot */
- int (*switch_slot)(struct device *dev, int slot);
/* initialize board-specific MMC functionality, can be NULL if
* not supported */
int (*init)(struct device *dev);
--
2.34.1
^ permalink raw reply related
* [PATCH v3 1/3] Input: ads7846 - Convert to use software nodes
From: Linus Walleij @ 2023-05-05 11:16 UTC (permalink / raw)
To: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Dmitry Torokhov, Mark Brown, Bartosz Golaszewski, Andreas Kemnade,
Helge Deller, Ulf Hansson
Cc: linux-omap, linux-arm-kernel, linux-kernel, linux-mips,
linux-input, linux-spi, linux-fbdev, dri-devel, linux-mmc,
Linus Walleij
In-Reply-To: <20230430-nokia770-regression-v3-0-a6d0a89ffa8b@linaro.org>
The Nokia 770 is using GPIOs from the global numberspace on the
CBUS node to pass down to the LCD controller. This regresses when we
let the OMAP GPIO driver use dynamic GPIO base.
The Nokia 770 now has dynamic allocation of IRQ numbers, so this
needs to be fixed for it to work.
As this is the only user of LCD MIPID we can easily augment the
driver to use a GPIO descriptor instead and resolve the issue.
The platform data .shutdown() callback wasn't even used in the
code, but we encode a shutdown asserting RESET in the remove()
callback for completeness sake.
The CBUS also has the ADS7846 touchscreen attached.
Populate the devices on the Nokia 770 CBUS I2C using software
nodes instead of platform data quirks. This includes the LCD
and the ADS7846 touchscreen so the conversion just brings the LCD
along with it as software nodes is an all-or-nothing design
pattern.
The ADS7846 has some limited support for using GPIO descriptors,
let's convert it over completely to using device properties and then
fix all remaining boardfile users to provide all platform data using
software nodes.
Dump the of includes and of_match_ptr() in the ADS7846 driver as part
of the job.
Since we have to move ADS7846 over to obtaining the GPIOs it is
using exclusively from descriptors, we provide descriptor tables
for the two remaining in-kernel boardfiles using ADS7846:
- PXA Spitz
- MIPS Alchemy DB1000 development board
It was too hard for me to include software node conversion of
these two remaining users at this time: the spitz is using a
hscync callback in the platform data that would require further
GPIO descriptor conversion of the Spitz, and moving the hsync
callback down into the driver: it will just become too big of
a job, but it can be done separately.
The MIPS Alchemy DB1000 is simply something I cannot test, so take
the easier approach of just providing some GPIO descriptors in
this case as I don't want the patch to grow too intrusive.
Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Drop leftover OF ifdefs no longer needed and causing compile
errors.
---
arch/arm/mach-omap1/board-nokia770.c | 98 +++++++++++++++++----------
arch/arm/mach-pxa/spitz.c | 11 +++-
arch/mips/alchemy/devboards/db1000.c | 11 +++-
drivers/input/touchscreen/ads7846.c | 113 ++++++++++++--------------------
drivers/video/fbdev/omap/lcd_mipid.c | 10 +++
include/linux/platform_data/lcd-mipid.h | 2 -
include/linux/spi/ads7846.h | 2 -
7 files changed, 135 insertions(+), 112 deletions(-)
diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index a501a473ffd6..918e86634bc9 100644
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -8,15 +8,16 @@
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/input.h>
#include <linux/omapfb.h>
#include <linux/spi/spi.h>
-#include <linux/spi/ads7846.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
@@ -35,6 +36,25 @@
#include "clock.h"
#include "mmc.h"
+static const struct software_node nokia770_mpuio_gpiochip_node = {
+ .name = "mpuio",
+};
+
+static const struct software_node nokia770_gpiochip1_node = {
+ .name = "gpio-0-15",
+};
+
+static const struct software_node nokia770_gpiochip2_node = {
+ .name = "gpio-16-31",
+};
+
+static const struct software_node *nokia770_gpiochip_nodes[] = {
+ &nokia770_mpuio_gpiochip_node,
+ &nokia770_gpiochip1_node,
+ &nokia770_gpiochip2_node,
+ NULL,
+};
+
#define ADS7846_PENDOWN_GPIO 15
static const unsigned int nokia770_keymap[] = {
@@ -85,40 +105,46 @@ static struct platform_device *nokia770_devices[] __initdata = {
&nokia770_kp_device,
};
-static void mipid_shutdown(struct mipid_platform_data *pdata)
-{
- if (pdata->nreset_gpio != -1) {
- printk(KERN_INFO "shutdown LCD\n");
- gpio_set_value(pdata->nreset_gpio, 0);
- msleep(120);
- }
-}
-
-static struct mipid_platform_data nokia770_mipid_platform_data = {
- .shutdown = mipid_shutdown,
-};
+static struct mipid_platform_data nokia770_mipid_platform_data = { };
static const struct omap_lcd_config nokia770_lcd_config __initconst = {
.ctrl_name = "hwa742",
};
+static const struct property_entry nokia770_mipid_props[] = {
+ PROPERTY_ENTRY_GPIO("reset-gpios", &nokia770_gpiochip1_node,
+ 13, GPIO_ACTIVE_LOW),
+ { }
+};
+
+static const struct software_node nokia770_mipid_swnode = {
+ .name = "lcd_mipid",
+ .properties = nokia770_mipid_props,
+};
+
static void __init mipid_dev_init(void)
{
- nokia770_mipid_platform_data.nreset_gpio = 13;
nokia770_mipid_platform_data.data_lines = 16;
omapfb_set_lcd_config(&nokia770_lcd_config);
}
-static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
- .x_max = 0x0fff,
- .y_max = 0x0fff,
- .x_plate_ohms = 180,
- .pressure_max = 255,
- .debounce_max = 10,
- .debounce_tol = 3,
- .debounce_rep = 1,
- .gpio_pendown = ADS7846_PENDOWN_GPIO,
+static const struct property_entry nokia770_ads7846_props[] = {
+ PROPERTY_ENTRY_U32("touchscreen-size-x", 4096),
+ PROPERTY_ENTRY_U32("touchscreen-size-y", 4096),
+ PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256),
+ PROPERTY_ENTRY_U32("touchscreen-average-samples", 10),
+ PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180),
+ PROPERTY_ENTRY_U16("ti,debounce-tol", 3),
+ PROPERTY_ENTRY_U16("ti,debounce-rep", 1),
+ PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node,
+ ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_HIGH),
+ { }
+};
+
+static const struct software_node nokia770_ads7846_swnode = {
+ .name = "ads7846",
+ .properties = nokia770_ads7846_props,
};
static struct spi_board_info nokia770_spi_board_info[] __initdata = {
@@ -128,13 +154,14 @@ static struct spi_board_info nokia770_spi_board_info[] __initdata = {
.chip_select = 3,
.max_speed_hz = 12000000,
.platform_data = &nokia770_mipid_platform_data,
+ .swnode = &nokia770_mipid_swnode,
},
[1] = {
.modalias = "ads7846",
.bus_num = 2,
.chip_select = 0,
.max_speed_hz = 2500000,
- .platform_data = &nokia770_ads7846_platform_data,
+ .swnode = &nokia770_ads7846_swnode,
},
};
@@ -212,14 +239,16 @@ static inline void nokia770_mmc_init(void)
#endif
#if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)
-static struct gpiod_lookup_table nokia770_cbus_gpio_table = {
- .dev_id = "i2c-cbus-gpio.2",
- .table = {
- GPIO_LOOKUP_IDX("mpuio", 9, NULL, 0, 0), /* clk */
- GPIO_LOOKUP_IDX("mpuio", 10, NULL, 1, 0), /* dat */
- GPIO_LOOKUP_IDX("mpuio", 11, NULL, 2, 0), /* sel */
- { },
- },
+
+static const struct software_node_ref_args nokia770_cbus_gpio_refs[] = {
+ SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 9, 0),
+ SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 10, 0),
+ SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 11, 0),
+};
+
+static const struct property_entry nokia770_ads7846_props[] = {
+ PROPERTY_ENTRY_REF_ARRAY("gpios", nokia770_cbus_gpio_refs),
+ { }
};
static struct platform_device nokia770_cbus_device = {
@@ -253,7 +282,8 @@ static void __init nokia770_cbus_init(void)
nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio);
i2c_register_board_info(2, nokia770_i2c_board_info_2,
ARRAY_SIZE(nokia770_i2c_board_info_2));
- gpiod_add_lookup_table(&nokia770_cbus_gpio_table);
+ device_create_managed_software_node(&nokia770_cbus_device.dev,
+ nokia770_cbus_props, NULL);
platform_device_register(&nokia770_cbus_device);
}
#else /* CONFIG_I2C_CBUS_GPIO */
@@ -273,8 +303,8 @@ static void __init omap_nokia770_init(void)
/* Unmask SleepX signal */
omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
+ software_node_register_node_group(nokia770_gpiochip_nodes);
platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
- nokia770_spi_board_info[1].irq = gpio_to_irq(15);
spi_register_board_info(nokia770_spi_board_info,
ARRAY_SIZE(nokia770_spi_board_info));
omap_serial_init();
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 4325bdc2b9ff..c473304b4e3d 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -506,10 +506,18 @@ static struct ads7846_platform_data spitz_ads7846_info = {
.x_plate_ohms = 419,
.y_plate_ohms = 486,
.pressure_max = 1024,
- .gpio_pendown = SPITZ_GPIO_TP_INT,
.wait_for_sync = spitz_ads7846_wait_for_hsync,
};
+static struct gpiod_lookup_table spitz_ads7846_gpio_table = {
+ .dev_id = "spi2.0",
+ .table = {
+ GPIO_LOOKUP("gpio-pxa", SPITZ_GPIO_TP_INT,
+ "pendown", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
static void spitz_bl_kick_battery(void)
{
void (*kick_batt)(void);
@@ -594,6 +602,7 @@ static void __init spitz_spi_init(void)
else
gpiod_add_lookup_table(&spitz_lcdcon_gpio_table);
+ gpiod_add_lookup_table(&spitz_ads7846_gpio_table);
gpiod_add_lookup_table(&spitz_spi_gpio_table);
pxa2xx_set_spi_info(2, &spitz_spi_info);
spi_register_board_info(ARRAY_AND_SIZE(spitz_spi_devices));
diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c
index 2c52ee27b4f2..f37644859f89 100644
--- a/arch/mips/alchemy/devboards/db1000.c
+++ b/arch/mips/alchemy/devboards/db1000.c
@@ -381,13 +381,21 @@ static struct platform_device db1100_mmc1_dev = {
static struct ads7846_platform_data db1100_touch_pd = {
.model = 7846,
.vref_mv = 3300,
- .gpio_pendown = 21,
};
static struct spi_gpio_platform_data db1100_spictl_pd = {
.num_chipselect = 1,
};
+static struct gpiod_lookup_table db1100_touch_gpio_table = {
+ .dev_id = "spi0.0",
+ .table = {
+ GPIO_LOOKUP("alchemy-gpio2", 21,
+ "pendown", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
static struct spi_board_info db1100_spi_info[] __initdata = {
[0] = {
.modalias = "ads7846",
@@ -474,6 +482,7 @@ int __init db1000_dev_setup(void)
pfc |= (1 << 0); /* SSI0 pins as GPIOs */
alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
+ gpiod_add_lookup_table(&db1100_touch_gpio_table);
spi_register_board_info(db1100_spi_info,
ARRAY_SIZE(db1100_spi_info));
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index bb1058b1e7fd..91536b0b9393 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -24,11 +24,8 @@
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/pm.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
#include <linux/gpio/consumer.h>
-#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/regulator/consumer.h>
@@ -140,7 +137,7 @@ struct ads7846 {
int (*filter)(void *data, int data_idx, int *val);
void *filter_data;
int (*get_pendown_state)(void);
- int gpio_pendown;
+ struct gpio_desc *gpio_pendown;
void (*wait_for_sync)(void);
};
@@ -223,7 +220,7 @@ static int get_pendown_state(struct ads7846 *ts)
if (ts->get_pendown_state)
return ts->get_pendown_state();
- return !gpio_get_value(ts->gpio_pendown);
+ return !gpiod_get_value(ts->gpio_pendown);
}
static void ads7846_report_pen_up(struct ads7846 *ts)
@@ -989,8 +986,6 @@ static int ads7846_setup_pendown(struct spi_device *spi,
struct ads7846 *ts,
const struct ads7846_platform_data *pdata)
{
- int err;
-
/*
* REVISIT when the irq can be triggered active-low, or if for some
* reason the touchscreen isn't hooked up, we don't need to access
@@ -999,25 +994,15 @@ static int ads7846_setup_pendown(struct spi_device *spi,
if (pdata->get_pendown_state) {
ts->get_pendown_state = pdata->get_pendown_state;
- } else if (gpio_is_valid(pdata->gpio_pendown)) {
-
- err = devm_gpio_request_one(&spi->dev, pdata->gpio_pendown,
- GPIOF_IN, "ads7846_pendown");
- if (err) {
- dev_err(&spi->dev,
- "failed to request/setup pendown GPIO%d: %d\n",
- pdata->gpio_pendown, err);
- return err;
+ } else {
+ ts->gpio_pendown = gpiod_get(&spi->dev, "pendown", GPIOD_IN);
+ if (IS_ERR(ts->gpio_pendown)) {
+ dev_err(&spi->dev, "failed to request pendown GPIO\n");
+ return PTR_ERR(ts->gpio_pendown);
}
-
- ts->gpio_pendown = pdata->gpio_pendown;
-
if (pdata->gpio_pendown_debounce)
- gpiod_set_debounce(gpio_to_desc(ts->gpio_pendown),
+ gpiod_set_debounce(ts->gpio_pendown,
pdata->gpio_pendown_debounce);
- } else {
- dev_err(&spi->dev, "no get_pendown_state nor gpio_pendown?\n");
- return -EINVAL;
}
return 0;
@@ -1119,7 +1104,6 @@ static int ads7846_setup_spi_msg(struct ads7846 *ts,
return 0;
}
-#ifdef CONFIG_OF
static const struct of_device_id ads7846_dt_ids[] = {
{ .compatible = "ti,tsc2046", .data = (void *) 7846 },
{ .compatible = "ti,ads7843", .data = (void *) 7843 },
@@ -1130,20 +1114,14 @@ static const struct of_device_id ads7846_dt_ids[] = {
};
MODULE_DEVICE_TABLE(of, ads7846_dt_ids);
-static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
+static const struct ads7846_platform_data *ads7846_get_props(struct device *dev)
{
struct ads7846_platform_data *pdata;
- struct device_node *node = dev->of_node;
- const struct of_device_id *match;
+ const struct platform_device_id *pdev_id;
u32 value;
- if (!node) {
- dev_err(dev, "Device does not have associated DT data\n");
- return ERR_PTR(-EINVAL);
- }
-
- match = of_match_device(ads7846_dt_ids, dev);
- if (!match) {
+ pdev_id = device_get_match_data(dev);
+ if (!pdev_id) {
dev_err(dev, "Unknown device model\n");
return ERR_PTR(-EINVAL);
}
@@ -1152,60 +1130,51 @@ static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
if (!pdata)
return ERR_PTR(-ENOMEM);
- pdata->model = (unsigned long)match->data;
+ pdata->model = (unsigned long)pdev_id->driver_data;
- of_property_read_u16(node, "ti,vref-delay-usecs",
- &pdata->vref_delay_usecs);
- of_property_read_u16(node, "ti,vref-mv", &pdata->vref_mv);
- pdata->keep_vref_on = of_property_read_bool(node, "ti,keep-vref-on");
+ device_property_read_u16(dev, "ti,vref-delay-usecs",
+ &pdata->vref_delay_usecs);
+ device_property_read_u16(dev, "ti,vref-mv", &pdata->vref_mv);
+ pdata->keep_vref_on = device_property_read_bool(dev, "ti,keep-vref-on");
- pdata->swap_xy = of_property_read_bool(node, "ti,swap-xy");
+ pdata->swap_xy = device_property_read_bool(dev, "ti,swap-xy");
- of_property_read_u16(node, "ti,settle-delay-usec",
- &pdata->settle_delay_usecs);
- of_property_read_u16(node, "ti,penirq-recheck-delay-usecs",
- &pdata->penirq_recheck_delay_usecs);
+ device_property_read_u16(dev, "ti,settle-delay-usec",
+ &pdata->settle_delay_usecs);
+ device_property_read_u16(dev, "ti,penirq-recheck-delay-usecs",
+ &pdata->penirq_recheck_delay_usecs);
- of_property_read_u16(node, "ti,x-plate-ohms", &pdata->x_plate_ohms);
- of_property_read_u16(node, "ti,y-plate-ohms", &pdata->y_plate_ohms);
+ device_property_read_u16(dev, "ti,x-plate-ohms", &pdata->x_plate_ohms);
+ device_property_read_u16(dev, "ti,y-plate-ohms", &pdata->y_plate_ohms);
- of_property_read_u16(node, "ti,x-min", &pdata->x_min);
- of_property_read_u16(node, "ti,y-min", &pdata->y_min);
- of_property_read_u16(node, "ti,x-max", &pdata->x_max);
- of_property_read_u16(node, "ti,y-max", &pdata->y_max);
+ device_property_read_u16(dev, "ti,x-min", &pdata->x_min);
+ device_property_read_u16(dev, "ti,y-min", &pdata->y_min);
+ device_property_read_u16(dev, "ti,x-max", &pdata->x_max);
+ device_property_read_u16(dev, "ti,y-max", &pdata->y_max);
/*
* touchscreen-max-pressure gets parsed during
* touchscreen_parse_properties()
*/
- of_property_read_u16(node, "ti,pressure-min", &pdata->pressure_min);
- if (!of_property_read_u32(node, "touchscreen-min-pressure", &value))
+ device_property_read_u16(dev, "ti,pressure-min", &pdata->pressure_min);
+ if (!device_property_read_u32(dev, "touchscreen-min-pressure", &value))
pdata->pressure_min = (u16) value;
- of_property_read_u16(node, "ti,pressure-max", &pdata->pressure_max);
+ device_property_read_u16(dev, "ti,pressure-max", &pdata->pressure_max);
- of_property_read_u16(node, "ti,debounce-max", &pdata->debounce_max);
- if (!of_property_read_u32(node, "touchscreen-average-samples", &value))
+ device_property_read_u16(dev, "ti,debounce-max", &pdata->debounce_max);
+ if (!device_property_read_u32(dev, "touchscreen-average-samples", &value))
pdata->debounce_max = (u16) value;
- of_property_read_u16(node, "ti,debounce-tol", &pdata->debounce_tol);
- of_property_read_u16(node, "ti,debounce-rep", &pdata->debounce_rep);
+ device_property_read_u16(dev, "ti,debounce-tol", &pdata->debounce_tol);
+ device_property_read_u16(dev, "ti,debounce-rep", &pdata->debounce_rep);
- of_property_read_u32(node, "ti,pendown-gpio-debounce",
+ device_property_read_u32(dev, "ti,pendown-gpio-debounce",
&pdata->gpio_pendown_debounce);
- pdata->wakeup = of_property_read_bool(node, "wakeup-source") ||
- of_property_read_bool(node, "linux,wakeup");
-
- pdata->gpio_pendown = of_get_named_gpio(dev->of_node, "pendown-gpio", 0);
+ pdata->wakeup = device_property_read_bool(dev, "wakeup-source") ||
+ device_property_read_bool(dev, "linux,wakeup");
return pdata;
}
-#else
-static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
-{
- dev_err(dev, "no platform data defined\n");
- return ERR_PTR(-EINVAL);
-}
-#endif
static void ads7846_regulator_disable(void *regulator)
{
@@ -1269,7 +1238,7 @@ static int ads7846_probe(struct spi_device *spi)
pdata = dev_get_platdata(dev);
if (!pdata) {
- pdata = ads7846_probe_dt(dev);
+ pdata = ads7846_get_props(dev);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
}
@@ -1426,7 +1395,7 @@ static struct spi_driver ads7846_driver = {
.driver = {
.name = "ads7846",
.pm = pm_sleep_ptr(&ads7846_pm),
- .of_match_table = of_match_ptr(ads7846_dt_ids),
+ .of_match_table = ads7846_dt_ids,
},
.probe = ads7846_probe,
.remove = ads7846_remove,
diff --git a/drivers/video/fbdev/omap/lcd_mipid.c b/drivers/video/fbdev/omap/lcd_mipid.c
index 03cff39d392d..e4a7f0b824ff 100644
--- a/drivers/video/fbdev/omap/lcd_mipid.c
+++ b/drivers/video/fbdev/omap/lcd_mipid.c
@@ -7,6 +7,7 @@
*/
#include <linux/device.h>
#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/spi/spi.h>
@@ -41,6 +42,7 @@ struct mipid_device {
when we can issue the
next sleep in/out command */
unsigned long hw_guard_wait; /* max guard time in jiffies */
+ struct gpio_desc *reset;
struct omapfb_device *fbdev;
struct spi_device *spi;
@@ -556,6 +558,12 @@ static int mipid_spi_probe(struct spi_device *spi)
return -ENOMEM;
}
+ /* This will de-assert RESET if active */
+ md->reset = gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(md->reset))
+ return dev_err_probe(&spi->dev, PTR_ERR(md->reset),
+ "no reset GPIO line\n");
+
spi->mode = SPI_MODE_0;
md->spi = spi;
dev_set_drvdata(&spi->dev, md);
@@ -574,6 +582,8 @@ static void mipid_spi_remove(struct spi_device *spi)
{
struct mipid_device *md = dev_get_drvdata(&spi->dev);
+ /* Asserts RESET */
+ gpiod_set_value(md->reset, 1);
mipid_disable(&md->panel);
kfree(md);
}
diff --git a/include/linux/platform_data/lcd-mipid.h b/include/linux/platform_data/lcd-mipid.h
index 63f05eb23827..4927cfc5158c 100644
--- a/include/linux/platform_data/lcd-mipid.h
+++ b/include/linux/platform_data/lcd-mipid.h
@@ -15,10 +15,8 @@ enum mipid_test_result {
#ifdef __KERNEL__
struct mipid_platform_data {
- int nreset_gpio;
int data_lines;
- void (*shutdown)(struct mipid_platform_data *pdata);
void (*set_bklight_level)(struct mipid_platform_data *pdata,
int level);
int (*get_bklight_level)(struct mipid_platform_data *pdata);
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index d424c1aadf38..a04c1c34c344 100644
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -35,8 +35,6 @@ struct ads7846_platform_data {
u16 debounce_tol; /* tolerance used for filtering */
u16 debounce_rep; /* additional consecutive good readings
* required after the first two */
- int gpio_pendown; /* the GPIO used to decide the pendown
- * state if get_pendown_state == NULL */
int gpio_pendown_debounce; /* platform specific debounce time for
* the gpio_pendown */
int (*get_pendown_state)(void);
--
2.34.1
^ permalink raw reply related
* [PATCH v3 0/3] Fix up Nokia 770 regression
From: Linus Walleij @ 2023-05-05 11:16 UTC (permalink / raw)
To: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Dmitry Torokhov, Mark Brown, Bartosz Golaszewski, Andreas Kemnade,
Helge Deller, Ulf Hansson
Cc: linux-omap, linux-arm-kernel, linux-kernel, linux-mips,
linux-input, linux-spi, linux-fbdev, dri-devel, linux-mmc,
Linus Walleij
A recent change to use dynamic GPIO base allocation in the
OMAP GPIO driver caused a regression in some OMAP1 boards.
This series fixes up the Nokia 770 board from 2005:
https://en.wikipedia.org/wiki/Nokia_770_Internet_Tablet
I don't know how urgent the fix is, you decide. For me,
it is fair if fringe systems get fixed in due time, as
they are hardly anyones main development laptop.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Changes in v3:
- Fix a compile error in the ADS7846 driver by dropping some
leftover OF ifdeffery.
- Link to v2: https://lore.kernel.org/r/20230430-nokia770-regression-v2-0-984ed3ca5444@linaro.org
Changes in v2:
- Thoroughly rewrote the approach taken for the ADS7846 touchscreen
following Dmitry's ambition to go a step further and take a swnode
approach to this conversion: I'm fine with that, the patch just
get a bit bigger.
- Picked up Ulf's ACK on the MMC patch.
- Link to v1: https://lore.kernel.org/r/20230430-nokia770-regression-v1-0-97704e36b094@linaro.org
---
Linus Walleij (3):
Input: ads7846 - Convert to use software nodes
ARM/mmc: Convert old mmci-omap to GPIO descriptors
ARM: omap1: Fix up the Nokia 770 board device IRQs
arch/arm/mach-omap1/board-nokia770.c | 198 +++++++++++++++++++-------------
arch/arm/mach-omap1/board-sx1-mmc.c | 1 -
arch/arm/mach-omap2/board-n8x0.c | 85 +++++---------
arch/arm/mach-pxa/spitz.c | 11 +-
arch/mips/alchemy/devboards/db1000.c | 11 +-
drivers/input/touchscreen/ads7846.c | 113 +++++++-----------
drivers/mmc/host/omap.c | 46 +++++++-
drivers/video/fbdev/omap/lcd_mipid.c | 10 ++
include/linux/platform_data/lcd-mipid.h | 2 -
include/linux/platform_data/mmc-omap.h | 2 -
include/linux/spi/ads7846.h | 2 -
11 files changed, 262 insertions(+), 219 deletions(-)
---
base-commit: 348551ddaf311c76b01cdcbaf61b6fef06a49144
change-id: 20230430-nokia770-regression-2b5a07497ec9
Best regards,
--
Linus Walleij <linus.walleij@linaro.org>
^ permalink raw reply
* Re: [PATCH v2 1/3] Input: ads7846 - Convert to use software nodes
From: kernel test robot @ 2023-05-05 10:11 UTC (permalink / raw)
To: Linus Walleij, Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Thomas Bogendoerfer, Dmitry Torokhov, Mark Brown,
Bartosz Golaszewski, Andreas Kemnade, Helge Deller, Ulf Hansson
Cc: llvm, oe-kbuild-all, linux-fbdev, linux-mips, linux-mmc,
linux-kernel, dri-devel, linux-spi, linux-input, linux-omap,
linux-arm-kernel
In-Reply-To: <20230430-nokia770-regression-v2-1-984ed3ca5444@linaro.org>
Hi Linus,
kernel test robot noticed the following build errors:
[auto build test ERROR on 348551ddaf311c76b01cdcbaf61b6fef06a49144]
url: https://github.com/intel-lab-lkp/linux/commits/Linus-Walleij/Input-ads7846-Convert-to-use-software-nodes/20230505-162601
base: 348551ddaf311c76b01cdcbaf61b6fef06a49144
patch link: https://lore.kernel.org/r/20230430-nokia770-regression-v2-1-984ed3ca5444%40linaro.org
patch subject: [PATCH v2 1/3] Input: ads7846 - Convert to use software nodes
config: hexagon-randconfig-r041-20230501 (https://download.01.org/0day-ci/archive/20230505/202305051758.yjd7CtkI-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/9708c9277cc820e52916ddf795926d3254bb5eed
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Linus-Walleij/Input-ads7846-Convert-to-use-software-nodes/20230505-162601
git checkout 9708c9277cc820e52916ddf795926d3254bb5eed
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/input/touchscreen/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305051758.yjd7CtkI-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from drivers/input/touchscreen/ads7846.c:24:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from drivers/input/touchscreen/ads7846.c:24:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from drivers/input/touchscreen/ads7846.c:24:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:334:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
>> drivers/input/touchscreen/ads7846.c:1406:21: error: use of undeclared identifier 'ads7846_dt_ids'
.of_match_table = ads7846_dt_ids,
^
6 warnings and 1 error generated.
vim +/ads7846_dt_ids +1406 drivers/input/touchscreen/ads7846.c
1401
1402 static struct spi_driver ads7846_driver = {
1403 .driver = {
1404 .name = "ads7846",
1405 .pm = pm_sleep_ptr(&ads7846_pm),
> 1406 .of_match_table = ads7846_dt_ids,
1407 },
1408 .probe = ads7846_probe,
1409 .remove = ads7846_remove,
1410 };
1411
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
^ permalink raw reply
* Re: [PATCH v2 1/3] Input: ads7846 - Convert to use software nodes
From: kernel test robot @ 2023-05-05 9:40 UTC (permalink / raw)
To: Linus Walleij, Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren,
Russell King, Daniel Mack, Haojian Zhuang, Robert Jarzmik,
Thomas Bogendoerfer, Dmitry Torokhov, Mark Brown,
Bartosz Golaszewski, Andreas Kemnade, Helge Deller, Ulf Hansson
Cc: oe-kbuild-all, linux-fbdev, linux-mips, linux-mmc, linux-kernel,
dri-devel, linux-spi, linux-input, linux-omap, linux-arm-kernel
In-Reply-To: <20230430-nokia770-regression-v2-1-984ed3ca5444@linaro.org>
Hi Linus,
kernel test robot noticed the following build errors:
[auto build test ERROR on 348551ddaf311c76b01cdcbaf61b6fef06a49144]
url: https://github.com/intel-lab-lkp/linux/commits/Linus-Walleij/Input-ads7846-Convert-to-use-software-nodes/20230505-162601
base: 348551ddaf311c76b01cdcbaf61b6fef06a49144
patch link: https://lore.kernel.org/r/20230430-nokia770-regression-v2-1-984ed3ca5444%40linaro.org
patch subject: [PATCH v2 1/3] Input: ads7846 - Convert to use software nodes
config: i386-randconfig-a003 (https://download.01.org/0day-ci/archive/20230505/202305051726.wOn3I3W1-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/9708c9277cc820e52916ddf795926d3254bb5eed
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Linus-Walleij/Input-ads7846-Convert-to-use-software-nodes/20230505-162601
git checkout 9708c9277cc820e52916ddf795926d3254bb5eed
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=i386 olddefconfig
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/input/touchscreen/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305051726.wOn3I3W1-lkp@intel.com/
All errors (new ones prefixed by >>):
>> drivers/input/touchscreen/ads7846.c:1406:35: error: 'ads7846_dt_ids' undeclared here (not in a function); did you mean 'ads7846_cmds'?
1406 | .of_match_table = ads7846_dt_ids,
| ^~~~~~~~~~~~~~
| ads7846_cmds
vim +1406 drivers/input/touchscreen/ads7846.c
1401
1402 static struct spi_driver ads7846_driver = {
1403 .driver = {
1404 .name = "ads7846",
1405 .pm = pm_sleep_ptr(&ads7846_pm),
> 1406 .of_match_table = ads7846_dt_ids,
1407 },
1408 .probe = ads7846_probe,
1409 .remove = ads7846_remove,
1410 };
1411
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
^ permalink raw reply
* [PATCH v2] HID: hid-google-stadiaff: add support for Stadia force feedback
From: Fabio Baltieri @ 2023-05-05 9:27 UTC (permalink / raw)
To: Benjamin Tissoires; +Cc: Jiri Kosina, linux-input, linux-kernel, Fabio Baltieri
Add a hid-stadiaff module to support rumble based force feedback on the
Google Stadia controller. This works using the HID output endpoint
exposed on both the USB and BLE interface.
Signed-off-by: Fabio Baltieri <fabiobaltieri@chromium.org>
---
Hi, this adds rumble support to the stadia controller using the input
interface. Up to now this has only been implemented at application level
using hidraw:
https://source.chromium.org/chromium/chromium/src/+/main:device/gamepad/hid_haptic_gamepad.cc
Tested with fftest, works both over USB and BLE.
Changes from v1:
- renamed the module to hid-google-stadiaff.c
- added locking for passing the state to the worker code
- added a module removed check to prevent the work from rescheduling
drivers/hid/Kconfig | 7 ++
drivers/hid/Makefile | 1 +
drivers/hid/hid-google-stadiaff.c | 153 ++++++++++++++++++++++++++++++
drivers/hid/hid-ids.h | 1 +
4 files changed, 162 insertions(+)
create mode 100644 drivers/hid/hid-google-stadiaff.c
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 82f64fb31fda..f4f75d8a28ac 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -412,6 +412,13 @@ config HID_GOOGLE_HAMMER
help
Say Y here if you have a Google Hammer device.
+config HID_GOOGLE_STADIA_FF
+ tristate "Google Stadia force feedback"
+ select INPUT_FF_MEMLESS
+ help
+ Say Y here if you want to enable force feedback support for the Google
+ Stadia controller.
+
config HID_VIVALDI
tristate "Vivaldi Keyboard"
select HID_VIVALDI_COMMON
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 5d37cacbde33..18e9a3afecab 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -55,6 +55,7 @@ obj-$(CONFIG_HID_GFRM) += hid-gfrm.o
obj-$(CONFIG_HID_GLORIOUS) += hid-glorious.o
obj-$(CONFIG_HID_VIVALDI_COMMON) += hid-vivaldi-common.o
obj-$(CONFIG_HID_GOOGLE_HAMMER) += hid-google-hammer.o
+obj-$(CONFIG_HID_GOOGLE_STADIA_FF) += hid-google-stadiaff.o
obj-$(CONFIG_HID_VIVALDI) += hid-vivaldi.o
obj-$(CONFIG_HID_GT683R) += hid-gt683r.o
obj-$(CONFIG_HID_GYRATION) += hid-gyration.o
diff --git a/drivers/hid/hid-google-stadiaff.c b/drivers/hid/hid-google-stadiaff.c
new file mode 100644
index 000000000000..2628099e802c
--- /dev/null
+++ b/drivers/hid/hid-google-stadiaff.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Stadia controller rumble support.
+ *
+ * Copyright 2023 Google LLC
+ */
+
+#include <linux/hid.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+#define STADIA_FF_REPORT_ID 5
+
+struct stadiaff_device {
+ struct hid_device *hid;
+ struct hid_report *report;
+ spinlock_t lock;
+ bool removed;
+ uint16_t strong_magnitude;
+ uint16_t weak_magnitude;
+ struct work_struct work;
+};
+
+static void stadiaff_work(struct work_struct *work)
+{
+ struct stadiaff_device *stadiaff =
+ container_of(work, struct stadiaff_device, work);
+ struct hid_field *rumble_field = stadiaff->report->field[0];
+ unsigned long flags;
+
+ spin_lock_irqsave(&stadiaff->lock, flags);
+ rumble_field->value[0] = stadiaff->strong_magnitude;
+ rumble_field->value[1] = stadiaff->weak_magnitude;
+ spin_unlock_irqrestore(&stadiaff->lock, flags);
+
+ hid_hw_request(stadiaff->hid, stadiaff->report, HID_REQ_SET_REPORT);
+}
+
+static int stadiaff_play(struct input_dev *dev, void *data,
+ struct ff_effect *effect)
+{
+ struct hid_device *hid = input_get_drvdata(dev);
+ struct stadiaff_device *stadiaff = hid_get_drvdata(hid);
+ unsigned long flags;
+
+ spin_lock_irqsave(&stadiaff->lock, flags);
+ if (!stadiaff->removed) {
+ stadiaff->strong_magnitude = effect->u.rumble.strong_magnitude;
+ stadiaff->weak_magnitude = effect->u.rumble.weak_magnitude;
+ schedule_work(&stadiaff->work);
+ }
+ spin_unlock_irqrestore(&stadiaff->lock, flags);
+
+ return 0;
+}
+
+static int stadiaff_init(struct hid_device *hid)
+{
+ struct stadiaff_device *stadiaff;
+ struct hid_report *report;
+ struct hid_input *hidinput;
+ struct input_dev *dev;
+ int error;
+
+ if (list_empty(&hid->inputs)) {
+ hid_err(hid, "no inputs found\n");
+ return -ENODEV;
+ }
+ hidinput = list_entry(hid->inputs.next, struct hid_input, list);
+ dev = hidinput->input;
+
+ report = hid_validate_values(hid, HID_OUTPUT_REPORT,
+ STADIA_FF_REPORT_ID, 0, 2);
+ if (!report)
+ return -ENODEV;
+
+ stadiaff = devm_kzalloc(&hid->dev, sizeof(struct stadiaff_device),
+ GFP_KERNEL);
+ if (!stadiaff)
+ return -ENOMEM;
+
+ hid_set_drvdata(hid, stadiaff);
+
+ input_set_capability(dev, EV_FF, FF_RUMBLE);
+
+ error = input_ff_create_memless(dev, NULL, stadiaff_play);
+ if (error)
+ return error;
+
+ stadiaff->removed = false;
+ stadiaff->hid = hid;
+ stadiaff->report = report;
+ INIT_WORK(&stadiaff->work, stadiaff_work);
+ spin_lock_init(&stadiaff->lock);
+
+ hid_info(hid, "Force Feedback for Google Stadia controller\n");
+
+ return 0;
+}
+
+static int stadia_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+ int ret;
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "parse failed\n");
+ return ret;
+ }
+
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
+ if (ret) {
+ hid_err(hdev, "hw start failed\n");
+ return ret;
+ }
+
+ stadiaff_init(hdev);
+
+ return 0;
+}
+
+static void stadia_remove(struct hid_device *hid)
+{
+ struct stadiaff_device *stadiaff = hid_get_drvdata(hid);
+ unsigned long flags;
+
+ spin_lock_irqsave(&stadiaff->lock, flags);
+ stadiaff->removed = true;
+ spin_unlock_irqrestore(&stadiaff->lock, flags);
+
+ cancel_work_sync(&stadiaff->work);
+ hid_hw_stop(hid);
+}
+
+static const struct hid_device_id stadia_devices[] = {
+ { HID_USB_DEVICE(USB_VENDOR_ID_GOOGLE, USB_DEVICE_ID_GOOGLE_STADIA) },
+ { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_GOOGLE, USB_DEVICE_ID_GOOGLE_STADIA) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, stadia_devices);
+
+static struct hid_driver stadia_driver = {
+ .name = "stadia",
+ .id_table = stadia_devices,
+ .probe = stadia_probe,
+ .remove = stadia_remove,
+};
+module_hid_driver(stadia_driver);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 63545cd307e5..cffd4ac609a0 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -525,6 +525,7 @@
#define USB_DEVICE_ID_GOOGLE_MOONBALL 0x5044
#define USB_DEVICE_ID_GOOGLE_DON 0x5050
#define USB_DEVICE_ID_GOOGLE_EEL 0x5057
+#define USB_DEVICE_ID_GOOGLE_STADIA 0x9400
#define USB_VENDOR_ID_GOTOP 0x08f2
#define USB_DEVICE_ID_SUPER_Q2 0x007f
--
2.40.1.521.gf1e218fcd8-goog
^ permalink raw reply related
* Re: [PATCH] HID: hid-stadiaff: add support for Stadia force feedback
From: Fabio Baltieri @ 2023-05-05 9:27 UTC (permalink / raw)
To: Benjamin Tissoires; +Cc: Jiri Kosina, linux-input, linux-kernel
In-Reply-To: <20230413160033.buwdbysbbc2hgu6o@mail.corp.redhat.com>
Hi,
On Thu, Apr 13, 2023 at 06:00:33PM +0200, Benjamin Tissoires wrote:
> > drivers/hid/Kconfig | 7 ++
> > drivers/hid/Makefile | 1 +
> > drivers/hid/hid-ids.h | 1 +
> > drivers/hid/hid-stadiaff.c | 132 +++++++++++++++++++++++++++++++++++++
>
> Mind renaming this hid-google-stadiaff.c?
> It's hard to know that stadia is from Google otherwise.
Sure thing.
> > +static int stadiaff_play(struct input_dev *dev, void *data,
> > + struct ff_effect *effect)
> > +{
> > + struct hid_device *hid = input_get_drvdata(dev);
> > + struct stadiaff_device *stadiaff = hid_get_drvdata(hid);
> > + struct hid_field *rumble_field = stadiaff->report->field[0];
> > +
> > + rumble_field->value[0] = effect->u.rumble.strong_magnitude;
> > + rumble_field->value[1] = effect->u.rumble.weak_magnitude;
> > +
> > + schedule_work(&stadiaff->work);
>
> It seems weird that you don't have any locking in place here.
> What if you are sending a report (in stadiaff_work) while having your
> _play() function called at the same time?
Yeah you are right, I somehow missed the whole locking story, sending a
v2 with that added.
> > +static void stadia_remove(struct hid_device *hid)
> > +{
> > + struct stadiaff_device *stadiaff = hid_get_drvdata(hid);
> > +
> > + cancel_work_sync(&stadiaff->work);
>
> What if you have a ff play event scheduled right here? Don't you need
> some way of forcing the work to not be scheduled once again?
Good point, adding that as well for v2, took the pattern from other
existing drivers.
Thanks for the review,
Fabio
--
Fabio Baltieri
^ permalink raw reply
* [PATCH v2 3/3] ARM: omap1: Fix up the Nokia 770 board device IRQs
From: Linus Walleij @ 2023-05-05 8:23 UTC (permalink / raw)
To: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Dmitry Torokhov, Mark Brown, Bartosz Golaszewski, Andreas Kemnade,
Helge Deller, Ulf Hansson
Cc: linux-omap, linux-arm-kernel, linux-kernel, linux-mips,
linux-input, linux-spi, linux-fbdev, dri-devel, linux-mmc,
Linus Walleij
In-Reply-To: <20230430-nokia770-regression-v2-0-984ed3ca5444@linaro.org>
The platform devices on the Nokia 770 is using some
board-specific IRQs that get statically assigned to platform
devices in the boardfile.
This does not work with dynamic IRQ chip bases.
Utilize the NULL device to define some board-specific
GPIO lookups and use these to immediately look up the
same GPIOs, convert to IRQ numbers and pass as resources
to the devices. This is ugly but should work.
Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/mach-omap1/board-nokia770.c | 57 ++++++++++++++++++++++++++++--------
1 file changed, 44 insertions(+), 13 deletions(-)
diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index dc37ea30bbcf..27bd5522e1de 100644
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -6,7 +6,7 @@
*/
#include <linux/clkdev.h>
#include <linux/irq.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/gpio/machine.h>
#include <linux/gpio/property.h>
#include <linux/kernel.h>
@@ -250,19 +250,25 @@ static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
static void __init nokia770_cbus_init(void)
{
- const int retu_irq_gpio = 62;
- const int tahvo_irq_gpio = 40;
-
- if (gpio_request_one(retu_irq_gpio, GPIOF_IN, "Retu IRQ"))
- return;
- if (gpio_request_one(tahvo_irq_gpio, GPIOF_IN, "Tahvo IRQ")) {
- gpio_free(retu_irq_gpio);
- return;
+ struct gpio_desc *d;
+ int irq;
+
+ d = gpiod_get(NULL, "retu_irq", GPIOD_IN);
+ if (IS_ERR(d)) {
+ pr_err("Unable to get CBUS Retu IRQ GPIO descriptor\n");
+ } else {
+ irq = gpiod_to_irq(d);
+ irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+ nokia770_i2c_board_info_2[0].irq = irq;
+ }
+ d = gpiod_get(NULL, "tahvo_irq", GPIOD_IN);
+ if (IS_ERR(d)) {
+ pr_err("Unable to get CBUS Tahvo IRQ GPIO descriptor\n");
+ } else {
+ irq = gpiod_to_irq(d);
+ irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
+ nokia770_i2c_board_info_2[1].irq = irq;
}
- irq_set_irq_type(gpio_to_irq(retu_irq_gpio), IRQ_TYPE_EDGE_RISING);
- irq_set_irq_type(gpio_to_irq(tahvo_irq_gpio), IRQ_TYPE_EDGE_RISING);
- nokia770_i2c_board_info_2[0].irq = gpio_to_irq(retu_irq_gpio);
- nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio);
i2c_register_board_info(2, nokia770_i2c_board_info_2,
ARRAY_SIZE(nokia770_i2c_board_info_2));
device_create_managed_software_node(&nokia770_cbus_device.dev,
@@ -275,8 +281,25 @@ static void __init nokia770_cbus_init(void)
}
#endif /* CONFIG_I2C_CBUS_GPIO */
+static struct gpiod_lookup_table nokia770_irq_gpio_table = {
+ .dev_id = NULL,
+ .table = {
+ /* GPIO used by SPI device 1 */
+ GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
+ GPIO_ACTIVE_HIGH),
+ /* GPIO used for retu IRQ */
+ GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
+ GPIO_ACTIVE_HIGH),
+ /* GPIO used for tahvo IRQ */
+ GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
+ GPIO_ACTIVE_HIGH),
+ },
+};
+
static void __init omap_nokia770_init(void)
{
+ struct gpio_desc *d;
+
/* On Nokia 770, the SleepX signal is masked with an
* MPUIO line by default. It has to be unmasked for it
* to become functional */
@@ -288,6 +311,14 @@ static void __init omap_nokia770_init(void)
software_node_register_node_group(nokia770_gpiochip_nodes);
platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
+
+ gpiod_add_lookup_table(&nokia770_irq_gpio_table);
+ d = gpiod_get(NULL, "ads7846_irq", GPIOD_IN);
+ if (IS_ERR(d))
+ pr_err("Unable to get ADS7846 IRQ GPIO descriptor\n");
+ else
+ nokia770_spi_board_info[1].irq = gpiod_to_irq(d);
+
spi_register_board_info(nokia770_spi_board_info,
ARRAY_SIZE(nokia770_spi_board_info));
omap_serial_init();
--
2.34.1
^ permalink raw reply related
* [PATCH v2 2/3] ARM/mmc: Convert old mmci-omap to GPIO descriptors
From: Linus Walleij @ 2023-05-05 8:23 UTC (permalink / raw)
To: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Dmitry Torokhov, Mark Brown, Bartosz Golaszewski, Andreas Kemnade,
Helge Deller, Ulf Hansson
Cc: linux-omap, linux-arm-kernel, linux-kernel, linux-mips,
linux-input, linux-spi, linux-fbdev, dri-devel, linux-mmc,
Linus Walleij
In-Reply-To: <20230430-nokia770-regression-v2-0-984ed3ca5444@linaro.org>
A recent change to the OMAP driver making it use a dynamic GPIO
base created problems with some old OMAP1 board files, among
them Nokia 770, SX1 and also the OMAP2 Nokia n8x0.
Fix up all instances of GPIOs being used for the MMC driver
by pushing the handling of power, slot selection and MMC
"cover" into the driver as optional GPIOs.
This is maybe not the most perfect solution as the MMC
framework have some central handlers for some of the
stuff, but it at least makes the situtation better and
solves the immediate issue.
Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base")
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/mach-omap1/board-nokia770.c | 43 ++++++-----------
arch/arm/mach-omap1/board-sx1-mmc.c | 1 -
arch/arm/mach-omap2/board-n8x0.c | 85 +++++++++++-----------------------
drivers/mmc/host/omap.c | 46 +++++++++++++++++-
include/linux/platform_data/mmc-omap.h | 2 -
5 files changed, 83 insertions(+), 94 deletions(-)
diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index 918e86634bc9..dc37ea30bbcf 100644
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -183,27 +183,23 @@ static struct omap_usb_config nokia770_usb_config __initdata = {
#if IS_ENABLED(CONFIG_MMC_OMAP)
-#define NOKIA770_GPIO_MMC_POWER 41
-#define NOKIA770_GPIO_MMC_SWITCH 23
-
-static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
- int vdd)
-{
- gpio_set_value(NOKIA770_GPIO_MMC_POWER, power_on);
- return 0;
-}
-
-static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
-{
- return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
-}
+static struct gpiod_lookup_table nokia770_mmc_gpio_table = {
+ .dev_id = "mmci-omap",
+ .table = {
+ /* Slot index 0, VSD power, GPIO 41 */
+ GPIO_LOOKUP_IDX("gpio-32-47", 9,
+ "vsd", 0, GPIO_ACTIVE_HIGH),
+ /* Slot index 0, switch, GPIO 23 */
+ GPIO_LOOKUP_IDX("gpio-16-31", 7,
+ "cover", 0, GPIO_ACTIVE_HIGH),
+ { }
+ },
+};
static struct omap_mmc_platform_data nokia770_mmc2_data = {
.nr_slots = 1,
.max_freq = 12000000,
.slots[0] = {
- .set_power = nokia770_mmc_set_power,
- .get_cover_state = nokia770_mmc_get_cover_state,
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.name = "mmcblk",
},
@@ -213,20 +209,7 @@ static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
static void __init nokia770_mmc_init(void)
{
- int ret;
-
- ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
- if (ret < 0)
- return;
- gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
-
- ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
- if (ret < 0) {
- gpio_free(NOKIA770_GPIO_MMC_POWER);
- return;
- }
- gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
-
+ gpiod_add_lookup_table(&nokia770_mmc_gpio_table);
/* Only the second MMC controller is used */
nokia770_mmc_data[1] = &nokia770_mmc2_data;
omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
diff --git a/arch/arm/mach-omap1/board-sx1-mmc.c b/arch/arm/mach-omap1/board-sx1-mmc.c
index f1c160924dfe..f183a8448a7b 100644
--- a/arch/arm/mach-omap1/board-sx1-mmc.c
+++ b/arch/arm/mach-omap1/board-sx1-mmc.c
@@ -9,7 +9,6 @@
* Copyright (C) 2007 Instituto Nokia de Tecnologia - INdT
*/
-#include <linux/gpio.h>
#include <linux/platform_device.h>
#include "hardware.h"
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
index 3353b0a923d9..baa2f0341aed 100644
--- a/arch/arm/mach-omap2/board-n8x0.c
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -11,6 +11,7 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/irq.h>
@@ -170,22 +171,32 @@ static struct spi_board_info n800_spi_board_info[] __initdata = {
* GPIO23 and GPIO9 slot 2 EMMC on N810
*
*/
-#define N8X0_SLOT_SWITCH_GPIO 96
-#define N810_EMMC_VSD_GPIO 23
-#define N810_EMMC_VIO_GPIO 9
-
static int slot1_cover_open;
static int slot2_cover_open;
static struct device *mmc_device;
-static int n8x0_mmc_switch_slot(struct device *dev, int slot)
-{
-#ifdef CONFIG_MMC_DEBUG
- dev_dbg(dev, "Choose slot %d\n", slot + 1);
-#endif
- gpio_set_value(N8X0_SLOT_SWITCH_GPIO, slot);
- return 0;
-}
+static struct gpiod_lookup_table nokia8xx_mmc_gpio_table = {
+ .dev_id = "mmci-omap",
+ .table = {
+ /* Slot switch, GPIO 96 */
+ GPIO_LOOKUP("gpio-80-111", 16,
+ "switch", GPIO_ACTIVE_HIGH),
+ { }
+ },
+};
+
+static struct gpiod_lookup_table nokia810_mmc_gpio_table = {
+ .dev_id = "mmci-omap",
+ .table = {
+ /* Slot index 1, VSD power, GPIO 23 */
+ GPIO_LOOKUP_IDX("gpio-16-31", 7,
+ "vsd", 1, GPIO_ACTIVE_HIGH),
+ /* Slot index 1, VIO power, GPIO 9 */
+ GPIO_LOOKUP_IDX("gpio-0-15", 9,
+ "vsd", 1, GPIO_ACTIVE_HIGH),
+ { }
+ },
+};
static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
int power_on, int vdd)
@@ -256,31 +267,13 @@ static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
return 0;
}
-static void n810_set_power_emmc(struct device *dev,
- int power_on)
-{
- dev_dbg(dev, "Set EMMC power %s\n", power_on ? "on" : "off");
-
- if (power_on) {
- gpio_set_value(N810_EMMC_VSD_GPIO, 1);
- msleep(1);
- gpio_set_value(N810_EMMC_VIO_GPIO, 1);
- msleep(1);
- } else {
- gpio_set_value(N810_EMMC_VIO_GPIO, 0);
- msleep(50);
- gpio_set_value(N810_EMMC_VSD_GPIO, 0);
- msleep(50);
- }
-}
-
static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
int vdd)
{
if (board_is_n800() || slot == 0)
return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
- n810_set_power_emmc(dev, power_on);
+ /* The n810 power will be handled by GPIO code in the driver */
return 0;
}
@@ -418,13 +411,6 @@ static void n8x0_mmc_shutdown(struct device *dev)
static void n8x0_mmc_cleanup(struct device *dev)
{
menelaus_unregister_mmc_callback();
-
- gpio_free(N8X0_SLOT_SWITCH_GPIO);
-
- if (board_is_n810()) {
- gpio_free(N810_EMMC_VSD_GPIO);
- gpio_free(N810_EMMC_VIO_GPIO);
- }
}
/*
@@ -433,7 +419,6 @@ static void n8x0_mmc_cleanup(struct device *dev)
*/
static struct omap_mmc_platform_data mmc1_data = {
.nr_slots = 0,
- .switch_slot = n8x0_mmc_switch_slot,
.init = n8x0_mmc_late_init,
.cleanup = n8x0_mmc_cleanup,
.shutdown = n8x0_mmc_shutdown,
@@ -463,14 +448,9 @@ static struct omap_mmc_platform_data mmc1_data = {
static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
-static struct gpio n810_emmc_gpios[] __initdata = {
- { N810_EMMC_VSD_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vddf" },
- { N810_EMMC_VIO_GPIO, GPIOF_OUT_INIT_LOW, "MMC slot 2 Vdd" },
-};
-
static void __init n8x0_mmc_init(void)
{
- int err;
+ gpiod_add_lookup_table(&nokia8xx_mmc_gpio_table);
if (board_is_n810()) {
mmc1_data.slots[0].name = "external";
@@ -483,20 +463,7 @@ static void __init n8x0_mmc_init(void)
*/
mmc1_data.slots[1].name = "internal";
mmc1_data.slots[1].ban_openended = 1;
- }
-
- err = gpio_request_one(N8X0_SLOT_SWITCH_GPIO, GPIOF_OUT_INIT_LOW,
- "MMC slot switch");
- if (err)
- return;
-
- if (board_is_n810()) {
- err = gpio_request_array(n810_emmc_gpios,
- ARRAY_SIZE(n810_emmc_gpios));
- if (err) {
- gpio_free(N8X0_SLOT_SWITCH_GPIO);
- return;
- }
+ gpiod_add_lookup_table(&nokia810_mmc_gpio_table);
}
mmc1_data.nr_slots = 2;
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index ce78edfb402b..a14af21f12da 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -26,6 +26,7 @@
#include <linux/clk.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
+#include <linux/gpio/consumer.h>
#include <linux/platform_data/mmc-omap.h>
@@ -111,6 +112,9 @@ struct mmc_omap_slot {
struct mmc_request *mrq;
struct mmc_omap_host *host;
struct mmc_host *mmc;
+ struct gpio_desc *vsd;
+ struct gpio_desc *vio;
+ struct gpio_desc *cover;
struct omap_mmc_slot_data *pdata;
};
@@ -133,6 +137,7 @@ struct mmc_omap_host {
int irq;
unsigned char bus_mode;
unsigned int reg_shift;
+ struct gpio_desc *slot_switch;
struct work_struct cmd_abort_work;
unsigned abort:1;
@@ -216,8 +221,13 @@ static void mmc_omap_select_slot(struct mmc_omap_slot *slot, int claimed)
if (host->current_slot != slot) {
OMAP_MMC_WRITE(host, CON, slot->saved_con & 0xFC00);
- if (host->pdata->switch_slot != NULL)
- host->pdata->switch_slot(mmc_dev(slot->mmc), slot->id);
+ if (host->slot_switch)
+ /*
+ * With two slots and a simple GPIO switch, setting
+ * the GPIO to 0 selects slot ID 0, setting it to 1
+ * selects slot ID 1.
+ */
+ gpiod_set_value(host->slot_switch, slot->id);
host->current_slot = slot;
}
@@ -297,6 +307,9 @@ static void mmc_omap_release_slot(struct mmc_omap_slot *slot, int clk_enabled)
static inline
int mmc_omap_cover_is_open(struct mmc_omap_slot *slot)
{
+ /* If we have a GPIO then use that */
+ if (slot->cover)
+ return gpiod_get_value(slot->cover);
if (slot->pdata->get_cover_state)
return slot->pdata->get_cover_state(mmc_dev(slot->mmc),
slot->id);
@@ -1106,6 +1119,11 @@ static void mmc_omap_set_power(struct mmc_omap_slot *slot, int power_on,
host = slot->host;
+ if (slot->vsd)
+ gpiod_set_value(slot->vsd, power_on);
+ if (slot->vio)
+ gpiod_set_value(slot->vio, power_on);
+
if (slot->pdata->set_power != NULL)
slot->pdata->set_power(mmc_dev(slot->mmc), slot->id, power_on,
vdd);
@@ -1240,6 +1258,23 @@ static int mmc_omap_new_slot(struct mmc_omap_host *host, int id)
slot->power_mode = MMC_POWER_UNDEFINED;
slot->pdata = &host->pdata->slots[id];
+ /* Check for some optional GPIO controls */
+ slot->vsd = gpiod_get_index_optional(host->dev, "vsd",
+ id, GPIOD_OUT_LOW);
+ if (IS_ERR(slot->vsd))
+ return dev_err_probe(host->dev, PTR_ERR(slot->vsd),
+ "error looking up VSD GPIO\n");
+ slot->vio = gpiod_get_index_optional(host->dev, "vio",
+ id, GPIOD_OUT_LOW);
+ if (IS_ERR(slot->vio))
+ return dev_err_probe(host->dev, PTR_ERR(slot->vio),
+ "error looking up VIO GPIO\n");
+ slot->cover = gpiod_get_index_optional(host->dev, "cover",
+ id, GPIOD_IN);
+ if (IS_ERR(slot->cover))
+ return dev_err_probe(host->dev, PTR_ERR(slot->cover),
+ "error looking up cover switch GPIO\n");
+
host->slots[id] = slot;
mmc->caps = 0;
@@ -1349,6 +1384,13 @@ static int mmc_omap_probe(struct platform_device *pdev)
if (IS_ERR(host->virt_base))
return PTR_ERR(host->virt_base);
+ host->slot_switch = gpiod_get_optional(host->dev, "switch",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(host->slot_switch))
+ return dev_err_probe(host->dev, PTR_ERR(host->slot_switch),
+ "error looking up slot switch GPIO\n");
+
+
INIT_WORK(&host->slot_release_work, mmc_omap_slot_release_work);
INIT_WORK(&host->send_stop_work, mmc_omap_send_stop_work);
diff --git a/include/linux/platform_data/mmc-omap.h b/include/linux/platform_data/mmc-omap.h
index 91051e9907f3..054d0c3c5ec5 100644
--- a/include/linux/platform_data/mmc-omap.h
+++ b/include/linux/platform_data/mmc-omap.h
@@ -20,8 +20,6 @@ struct omap_mmc_platform_data {
* maximum frequency on the MMC bus */
unsigned int max_freq;
- /* switch the bus to a new slot */
- int (*switch_slot)(struct device *dev, int slot);
/* initialize board-specific MMC functionality, can be NULL if
* not supported */
int (*init)(struct device *dev);
--
2.34.1
^ permalink raw reply related
* [PATCH v2 0/3] Fix up Nokia 770 regression
From: Linus Walleij @ 2023-05-05 8:22 UTC (permalink / raw)
To: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Dmitry Torokhov, Mark Brown, Bartosz Golaszewski, Andreas Kemnade,
Helge Deller, Ulf Hansson
Cc: linux-omap, linux-arm-kernel, linux-kernel, linux-mips,
linux-input, linux-spi, linux-fbdev, dri-devel, linux-mmc,
Linus Walleij
A recent change to use dynamic GPIO base allocation in the
OMAP GPIO driver caused a regression in some OMAP1 boards.
This series fixes up the Nokia 770 board from 2005:
https://en.wikipedia.org/wiki/Nokia_770_Internet_Tablet
I don't know how urgent the fix is, you decide. For me,
it is fair if fringe systems get fixed in due time, as
they are hardly anyones main development laptop.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Changes in v2:
- Thoroughly rewrote the approach taken for the ADS7846 touchscreen
following Dmitry's ambition to go a step further and take a swnode
approach to this conversion: I'm fine with that, the patch just
get a bit bigger.
- Picked up Ulf's ACK on the MMC patch.
- Link to v1: https://lore.kernel.org/r/20230430-nokia770-regression-v1-0-97704e36b094@linaro.org
---
Linus Walleij (3):
Input: ads7846 - Convert to use software nodes
ARM/mmc: Convert old mmci-omap to GPIO descriptors
ARM: omap1: Fix up the Nokia 770 board device IRQs
arch/arm/mach-omap1/board-nokia770.c | 198 +++++++++++++++++++-------------
arch/arm/mach-omap1/board-sx1-mmc.c | 1 -
arch/arm/mach-omap2/board-n8x0.c | 85 +++++---------
arch/arm/mach-pxa/spitz.c | 11 +-
arch/mips/alchemy/devboards/db1000.c | 11 +-
drivers/input/touchscreen/ads7846.c | 101 +++++++---------
drivers/mmc/host/omap.c | 46 +++++++-
drivers/video/fbdev/omap/lcd_mipid.c | 10 ++
include/linux/platform_data/lcd-mipid.h | 2 -
include/linux/platform_data/mmc-omap.h | 2 -
include/linux/spi/ads7846.h | 2 -
11 files changed, 260 insertions(+), 209 deletions(-)
---
base-commit: 348551ddaf311c76b01cdcbaf61b6fef06a49144
change-id: 20230430-nokia770-regression-2b5a07497ec9
Best regards,
--
Linus Walleij <linus.walleij@linaro.org>
^ permalink raw reply
* [PATCH v2 1/3] Input: ads7846 - Convert to use software nodes
From: Linus Walleij @ 2023-05-05 8:23 UTC (permalink / raw)
To: Aaro Koskinen, Janusz Krzysztofik, Tony Lindgren, Russell King,
Daniel Mack, Haojian Zhuang, Robert Jarzmik, Thomas Bogendoerfer,
Dmitry Torokhov, Mark Brown, Bartosz Golaszewski, Andreas Kemnade,
Helge Deller, Ulf Hansson
Cc: linux-omap, linux-arm-kernel, linux-kernel, linux-mips,
linux-input, linux-spi, linux-fbdev, dri-devel, linux-mmc,
Linus Walleij
In-Reply-To: <20230430-nokia770-regression-v2-0-984ed3ca5444@linaro.org>
The Nokia 770 is using GPIOs from the global numberspace on the
CBUS node to pass down to the LCD controller. This regresses when we
let the OMAP GPIO driver use dynamic GPIO base.
The Nokia 770 now has dynamic allocation of IRQ numbers, so this
needs to be fixed for it to work.
As this is the only user of LCD MIPID we can easily augment the
driver to use a GPIO descriptor instead and resolve the issue.
The platform data .shutdown() callback wasn't even used in the
code, but we encode a shutdown asserting RESET in the remove()
callback for completeness sake.
The CBUS also has the ADS7846 touchscreen attached.
Populate the devices on the Nokia 770 CBUS I2C using software
nodes instead of platform data quirks. This includes the LCD
and the ADS7846 touchscreen so the conversion just brings the LCD
along with it as software nodes is an all-or-nothing design
pattern.
The ADS7846 has some limited support for using GPIO descriptors,
let's convert it over completely to using device properties and then
fix all remaining boardfile users to provide all platform data using
software nodes.
Dump the of includes and of_match_ptr() in the ADS7846 driver as part
of the job.
Since we have to move ADS7846 over to obtaining the GPIOs it is
using exclusively from descriptors, we provide descriptor tables
for the two remaining in-kernel boardfiles using ADS7846:
- PXA Spitz
- MIPS Alchemy DB1000 development board
It was too hard for me to include software node conversion of
these two remaining users at this time: the spitz is using a
hscync callback in the platform data that would require further
GPIO descriptor conversion of the Spitz, and moving the hsync
callback down into the driver: it will just become too big of
a job, but it can be done separately.
The MIPS Alchemy DB1000 is simply something I cannot test, so take
the easier approach of just providing some GPIO descriptors in
this case as I don't want the patch to grow too intrusive.
Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arm/mach-omap1/board-nokia770.c | 98 ++++++++++++++++++++-----------
arch/arm/mach-pxa/spitz.c | 11 +++-
arch/mips/alchemy/devboards/db1000.c | 11 +++-
drivers/input/touchscreen/ads7846.c | 101 ++++++++++++--------------------
drivers/video/fbdev/omap/lcd_mipid.c | 10 ++++
include/linux/platform_data/lcd-mipid.h | 2 -
include/linux/spi/ads7846.h | 2 -
7 files changed, 133 insertions(+), 102 deletions(-)
diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c
index a501a473ffd6..918e86634bc9 100644
--- a/arch/arm/mach-omap1/board-nokia770.c
+++ b/arch/arm/mach-omap1/board-nokia770.c
@@ -8,15 +8,16 @@
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
+#include <linux/gpio/property.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/input.h>
#include <linux/omapfb.h>
#include <linux/spi/spi.h>
-#include <linux/spi/ads7846.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
@@ -35,6 +36,25 @@
#include "clock.h"
#include "mmc.h"
+static const struct software_node nokia770_mpuio_gpiochip_node = {
+ .name = "mpuio",
+};
+
+static const struct software_node nokia770_gpiochip1_node = {
+ .name = "gpio-0-15",
+};
+
+static const struct software_node nokia770_gpiochip2_node = {
+ .name = "gpio-16-31",
+};
+
+static const struct software_node *nokia770_gpiochip_nodes[] = {
+ &nokia770_mpuio_gpiochip_node,
+ &nokia770_gpiochip1_node,
+ &nokia770_gpiochip2_node,
+ NULL,
+};
+
#define ADS7846_PENDOWN_GPIO 15
static const unsigned int nokia770_keymap[] = {
@@ -85,40 +105,46 @@ static struct platform_device *nokia770_devices[] __initdata = {
&nokia770_kp_device,
};
-static void mipid_shutdown(struct mipid_platform_data *pdata)
-{
- if (pdata->nreset_gpio != -1) {
- printk(KERN_INFO "shutdown LCD\n");
- gpio_set_value(pdata->nreset_gpio, 0);
- msleep(120);
- }
-}
-
-static struct mipid_platform_data nokia770_mipid_platform_data = {
- .shutdown = mipid_shutdown,
-};
+static struct mipid_platform_data nokia770_mipid_platform_data = { };
static const struct omap_lcd_config nokia770_lcd_config __initconst = {
.ctrl_name = "hwa742",
};
+static const struct property_entry nokia770_mipid_props[] = {
+ PROPERTY_ENTRY_GPIO("reset-gpios", &nokia770_gpiochip1_node,
+ 13, GPIO_ACTIVE_LOW),
+ { }
+};
+
+static const struct software_node nokia770_mipid_swnode = {
+ .name = "lcd_mipid",
+ .properties = nokia770_mipid_props,
+};
+
static void __init mipid_dev_init(void)
{
- nokia770_mipid_platform_data.nreset_gpio = 13;
nokia770_mipid_platform_data.data_lines = 16;
omapfb_set_lcd_config(&nokia770_lcd_config);
}
-static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
- .x_max = 0x0fff,
- .y_max = 0x0fff,
- .x_plate_ohms = 180,
- .pressure_max = 255,
- .debounce_max = 10,
- .debounce_tol = 3,
- .debounce_rep = 1,
- .gpio_pendown = ADS7846_PENDOWN_GPIO,
+static const struct property_entry nokia770_ads7846_props[] = {
+ PROPERTY_ENTRY_U32("touchscreen-size-x", 4096),
+ PROPERTY_ENTRY_U32("touchscreen-size-y", 4096),
+ PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256),
+ PROPERTY_ENTRY_U32("touchscreen-average-samples", 10),
+ PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180),
+ PROPERTY_ENTRY_U16("ti,debounce-tol", 3),
+ PROPERTY_ENTRY_U16("ti,debounce-rep", 1),
+ PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node,
+ ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_HIGH),
+ { }
+};
+
+static const struct software_node nokia770_ads7846_swnode = {
+ .name = "ads7846",
+ .properties = nokia770_ads7846_props,
};
static struct spi_board_info nokia770_spi_board_info[] __initdata = {
@@ -128,13 +154,14 @@ static struct spi_board_info nokia770_spi_board_info[] __initdata = {
.chip_select = 3,
.max_speed_hz = 12000000,
.platform_data = &nokia770_mipid_platform_data,
+ .swnode = &nokia770_mipid_swnode,
},
[1] = {
.modalias = "ads7846",
.bus_num = 2,
.chip_select = 0,
.max_speed_hz = 2500000,
- .platform_data = &nokia770_ads7846_platform_data,
+ .swnode = &nokia770_ads7846_swnode,
},
};
@@ -212,14 +239,16 @@ static inline void nokia770_mmc_init(void)
#endif
#if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)
-static struct gpiod_lookup_table nokia770_cbus_gpio_table = {
- .dev_id = "i2c-cbus-gpio.2",
- .table = {
- GPIO_LOOKUP_IDX("mpuio", 9, NULL, 0, 0), /* clk */
- GPIO_LOOKUP_IDX("mpuio", 10, NULL, 1, 0), /* dat */
- GPIO_LOOKUP_IDX("mpuio", 11, NULL, 2, 0), /* sel */
- { },
- },
+
+static const struct software_node_ref_args nokia770_cbus_gpio_refs[] = {
+ SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 9, 0),
+ SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 10, 0),
+ SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 11, 0),
+};
+
+static const struct property_entry nokia770_ads7846_props[] = {
+ PROPERTY_ENTRY_REF_ARRAY("gpios", nokia770_cbus_gpio_refs),
+ { }
};
static struct platform_device nokia770_cbus_device = {
@@ -253,7 +282,8 @@ static void __init nokia770_cbus_init(void)
nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio);
i2c_register_board_info(2, nokia770_i2c_board_info_2,
ARRAY_SIZE(nokia770_i2c_board_info_2));
- gpiod_add_lookup_table(&nokia770_cbus_gpio_table);
+ device_create_managed_software_node(&nokia770_cbus_device.dev,
+ nokia770_cbus_props, NULL);
platform_device_register(&nokia770_cbus_device);
}
#else /* CONFIG_I2C_CBUS_GPIO */
@@ -273,8 +303,8 @@ static void __init omap_nokia770_init(void)
/* Unmask SleepX signal */
omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
+ software_node_register_node_group(nokia770_gpiochip_nodes);
platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
- nokia770_spi_board_info[1].irq = gpio_to_irq(15);
spi_register_board_info(nokia770_spi_board_info,
ARRAY_SIZE(nokia770_spi_board_info));
omap_serial_init();
diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c
index 4325bdc2b9ff..c473304b4e3d 100644
--- a/arch/arm/mach-pxa/spitz.c
+++ b/arch/arm/mach-pxa/spitz.c
@@ -506,10 +506,18 @@ static struct ads7846_platform_data spitz_ads7846_info = {
.x_plate_ohms = 419,
.y_plate_ohms = 486,
.pressure_max = 1024,
- .gpio_pendown = SPITZ_GPIO_TP_INT,
.wait_for_sync = spitz_ads7846_wait_for_hsync,
};
+static struct gpiod_lookup_table spitz_ads7846_gpio_table = {
+ .dev_id = "spi2.0",
+ .table = {
+ GPIO_LOOKUP("gpio-pxa", SPITZ_GPIO_TP_INT,
+ "pendown", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
static void spitz_bl_kick_battery(void)
{
void (*kick_batt)(void);
@@ -594,6 +602,7 @@ static void __init spitz_spi_init(void)
else
gpiod_add_lookup_table(&spitz_lcdcon_gpio_table);
+ gpiod_add_lookup_table(&spitz_ads7846_gpio_table);
gpiod_add_lookup_table(&spitz_spi_gpio_table);
pxa2xx_set_spi_info(2, &spitz_spi_info);
spi_register_board_info(ARRAY_AND_SIZE(spitz_spi_devices));
diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c
index 2c52ee27b4f2..f37644859f89 100644
--- a/arch/mips/alchemy/devboards/db1000.c
+++ b/arch/mips/alchemy/devboards/db1000.c
@@ -381,13 +381,21 @@ static struct platform_device db1100_mmc1_dev = {
static struct ads7846_platform_data db1100_touch_pd = {
.model = 7846,
.vref_mv = 3300,
- .gpio_pendown = 21,
};
static struct spi_gpio_platform_data db1100_spictl_pd = {
.num_chipselect = 1,
};
+static struct gpiod_lookup_table db1100_touch_gpio_table = {
+ .dev_id = "spi0.0",
+ .table = {
+ GPIO_LOOKUP("alchemy-gpio2", 21,
+ "pendown", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
static struct spi_board_info db1100_spi_info[] __initdata = {
[0] = {
.modalias = "ads7846",
@@ -474,6 +482,7 @@ int __init db1000_dev_setup(void)
pfc |= (1 << 0); /* SSI0 pins as GPIOs */
alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
+ gpiod_add_lookup_table(&db1100_touch_gpio_table);
spi_register_board_info(db1100_spi_info,
ARRAY_SIZE(db1100_spi_info));
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index bb1058b1e7fd..eed6e8e0d680 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -24,11 +24,8 @@
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/pm.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
#include <linux/gpio/consumer.h>
-#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/regulator/consumer.h>
@@ -140,7 +137,7 @@ struct ads7846 {
int (*filter)(void *data, int data_idx, int *val);
void *filter_data;
int (*get_pendown_state)(void);
- int gpio_pendown;
+ struct gpio_desc *gpio_pendown;
void (*wait_for_sync)(void);
};
@@ -223,7 +220,7 @@ static int get_pendown_state(struct ads7846 *ts)
if (ts->get_pendown_state)
return ts->get_pendown_state();
- return !gpio_get_value(ts->gpio_pendown);
+ return !gpiod_get_value(ts->gpio_pendown);
}
static void ads7846_report_pen_up(struct ads7846 *ts)
@@ -989,8 +986,6 @@ static int ads7846_setup_pendown(struct spi_device *spi,
struct ads7846 *ts,
const struct ads7846_platform_data *pdata)
{
- int err;
-
/*
* REVISIT when the irq can be triggered active-low, or if for some
* reason the touchscreen isn't hooked up, we don't need to access
@@ -999,25 +994,15 @@ static int ads7846_setup_pendown(struct spi_device *spi,
if (pdata->get_pendown_state) {
ts->get_pendown_state = pdata->get_pendown_state;
- } else if (gpio_is_valid(pdata->gpio_pendown)) {
-
- err = devm_gpio_request_one(&spi->dev, pdata->gpio_pendown,
- GPIOF_IN, "ads7846_pendown");
- if (err) {
- dev_err(&spi->dev,
- "failed to request/setup pendown GPIO%d: %d\n",
- pdata->gpio_pendown, err);
- return err;
+ } else {
+ ts->gpio_pendown = gpiod_get(&spi->dev, "pendown", GPIOD_IN);
+ if (IS_ERR(ts->gpio_pendown)) {
+ dev_err(&spi->dev, "failed to request pendown GPIO\n");
+ return PTR_ERR(ts->gpio_pendown);
}
-
- ts->gpio_pendown = pdata->gpio_pendown;
-
if (pdata->gpio_pendown_debounce)
- gpiod_set_debounce(gpio_to_desc(ts->gpio_pendown),
+ gpiod_set_debounce(ts->gpio_pendown,
pdata->gpio_pendown_debounce);
- } else {
- dev_err(&spi->dev, "no get_pendown_state nor gpio_pendown?\n");
- return -EINVAL;
}
return 0;
@@ -1133,17 +1118,11 @@ MODULE_DEVICE_TABLE(of, ads7846_dt_ids);
static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
{
struct ads7846_platform_data *pdata;
- struct device_node *node = dev->of_node;
- const struct of_device_id *match;
+ const struct platform_device_id *pdev_id;
u32 value;
- if (!node) {
- dev_err(dev, "Device does not have associated DT data\n");
- return ERR_PTR(-EINVAL);
- }
-
- match = of_match_device(ads7846_dt_ids, dev);
- if (!match) {
+ pdev_id = device_get_match_data(dev);
+ if (!pdev_id) {
dev_err(dev, "Unknown device model\n");
return ERR_PTR(-EINVAL);
}
@@ -1152,50 +1131,48 @@ static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
if (!pdata)
return ERR_PTR(-ENOMEM);
- pdata->model = (unsigned long)match->data;
+ pdata->model = (unsigned long)pdev_id->driver_data;
- of_property_read_u16(node, "ti,vref-delay-usecs",
- &pdata->vref_delay_usecs);
- of_property_read_u16(node, "ti,vref-mv", &pdata->vref_mv);
- pdata->keep_vref_on = of_property_read_bool(node, "ti,keep-vref-on");
+ device_property_read_u16(dev, "ti,vref-delay-usecs",
+ &pdata->vref_delay_usecs);
+ device_property_read_u16(dev, "ti,vref-mv", &pdata->vref_mv);
+ pdata->keep_vref_on = device_property_read_bool(dev, "ti,keep-vref-on");
- pdata->swap_xy = of_property_read_bool(node, "ti,swap-xy");
+ pdata->swap_xy = device_property_read_bool(dev, "ti,swap-xy");
- of_property_read_u16(node, "ti,settle-delay-usec",
- &pdata->settle_delay_usecs);
- of_property_read_u16(node, "ti,penirq-recheck-delay-usecs",
- &pdata->penirq_recheck_delay_usecs);
+ device_property_read_u16(dev, "ti,settle-delay-usec",
+ &pdata->settle_delay_usecs);
+ device_property_read_u16(dev, "ti,penirq-recheck-delay-usecs",
+ &pdata->penirq_recheck_delay_usecs);
- of_property_read_u16(node, "ti,x-plate-ohms", &pdata->x_plate_ohms);
- of_property_read_u16(node, "ti,y-plate-ohms", &pdata->y_plate_ohms);
+ device_property_read_u16(dev, "ti,x-plate-ohms", &pdata->x_plate_ohms);
+ device_property_read_u16(dev, "ti,y-plate-ohms", &pdata->y_plate_ohms);
- of_property_read_u16(node, "ti,x-min", &pdata->x_min);
- of_property_read_u16(node, "ti,y-min", &pdata->y_min);
- of_property_read_u16(node, "ti,x-max", &pdata->x_max);
- of_property_read_u16(node, "ti,y-max", &pdata->y_max);
+ device_property_read_u16(dev, "ti,x-min", &pdata->x_min);
+ device_property_read_u16(dev, "ti,y-min", &pdata->y_min);
+ device_property_read_u16(dev, "ti,x-max", &pdata->x_max);
+ device_property_read_u16(dev, "ti,y-max", &pdata->y_max);
/*
* touchscreen-max-pressure gets parsed during
* touchscreen_parse_properties()
*/
- of_property_read_u16(node, "ti,pressure-min", &pdata->pressure_min);
- if (!of_property_read_u32(node, "touchscreen-min-pressure", &value))
+ device_property_read_u16(dev, "ti,pressure-min", &pdata->pressure_min);
+ if (!device_property_read_u32(dev, "touchscreen-min-pressure", &value))
pdata->pressure_min = (u16) value;
- of_property_read_u16(node, "ti,pressure-max", &pdata->pressure_max);
+ device_property_read_u16(dev, "ti,pressure-max", &pdata->pressure_max);
- of_property_read_u16(node, "ti,debounce-max", &pdata->debounce_max);
- if (!of_property_read_u32(node, "touchscreen-average-samples", &value))
+ device_property_read_u16(dev, "ti,debounce-max", &pdata->debounce_max);
+ if (!device_property_read_u32(dev, "touchscreen-average-samples", &value))
pdata->debounce_max = (u16) value;
- of_property_read_u16(node, "ti,debounce-tol", &pdata->debounce_tol);
- of_property_read_u16(node, "ti,debounce-rep", &pdata->debounce_rep);
+ device_property_read_u16(dev, "ti,debounce-tol", &pdata->debounce_tol);
+ device_property_read_u16(dev, "ti,debounce-rep", &pdata->debounce_rep);
- of_property_read_u32(node, "ti,pendown-gpio-debounce",
+ device_property_read_u32(dev, "ti,pendown-gpio-debounce",
&pdata->gpio_pendown_debounce);
- pdata->wakeup = of_property_read_bool(node, "wakeup-source") ||
- of_property_read_bool(node, "linux,wakeup");
-
- pdata->gpio_pendown = of_get_named_gpio(dev->of_node, "pendown-gpio", 0);
+ pdata->wakeup = device_property_read_bool(dev, "wakeup-source") ||
+ device_property_read_bool(dev, "linux,wakeup");
return pdata;
}
@@ -1426,7 +1403,7 @@ static struct spi_driver ads7846_driver = {
.driver = {
.name = "ads7846",
.pm = pm_sleep_ptr(&ads7846_pm),
- .of_match_table = of_match_ptr(ads7846_dt_ids),
+ .of_match_table = ads7846_dt_ids,
},
.probe = ads7846_probe,
.remove = ads7846_remove,
diff --git a/drivers/video/fbdev/omap/lcd_mipid.c b/drivers/video/fbdev/omap/lcd_mipid.c
index 03cff39d392d..e4a7f0b824ff 100644
--- a/drivers/video/fbdev/omap/lcd_mipid.c
+++ b/drivers/video/fbdev/omap/lcd_mipid.c
@@ -7,6 +7,7 @@
*/
#include <linux/device.h>
#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/spi/spi.h>
@@ -41,6 +42,7 @@ struct mipid_device {
when we can issue the
next sleep in/out command */
unsigned long hw_guard_wait; /* max guard time in jiffies */
+ struct gpio_desc *reset;
struct omapfb_device *fbdev;
struct spi_device *spi;
@@ -556,6 +558,12 @@ static int mipid_spi_probe(struct spi_device *spi)
return -ENOMEM;
}
+ /* This will de-assert RESET if active */
+ md->reset = gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(md->reset))
+ return dev_err_probe(&spi->dev, PTR_ERR(md->reset),
+ "no reset GPIO line\n");
+
spi->mode = SPI_MODE_0;
md->spi = spi;
dev_set_drvdata(&spi->dev, md);
@@ -574,6 +582,8 @@ static void mipid_spi_remove(struct spi_device *spi)
{
struct mipid_device *md = dev_get_drvdata(&spi->dev);
+ /* Asserts RESET */
+ gpiod_set_value(md->reset, 1);
mipid_disable(&md->panel);
kfree(md);
}
diff --git a/include/linux/platform_data/lcd-mipid.h b/include/linux/platform_data/lcd-mipid.h
index 63f05eb23827..4927cfc5158c 100644
--- a/include/linux/platform_data/lcd-mipid.h
+++ b/include/linux/platform_data/lcd-mipid.h
@@ -15,10 +15,8 @@ enum mipid_test_result {
#ifdef __KERNEL__
struct mipid_platform_data {
- int nreset_gpio;
int data_lines;
- void (*shutdown)(struct mipid_platform_data *pdata);
void (*set_bklight_level)(struct mipid_platform_data *pdata,
int level);
int (*get_bklight_level)(struct mipid_platform_data *pdata);
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index d424c1aadf38..a04c1c34c344 100644
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -35,8 +35,6 @@ struct ads7846_platform_data {
u16 debounce_tol; /* tolerance used for filtering */
u16 debounce_rep; /* additional consecutive good readings
* required after the first two */
- int gpio_pendown; /* the GPIO used to decide the pendown
- * state if get_pendown_state == NULL */
int gpio_pendown_debounce; /* platform specific debounce time for
* the gpio_pendown */
int (*get_pendown_state)(void);
--
2.34.1
^ permalink raw reply related
* Re: [PATCH 1/2] Input: cs40l26: Support for CS40L26 Boosted Haptic Amplifier
From: Fred Treven @ 2023-05-04 21:51 UTC (permalink / raw)
To: Jeff LaBundy
Cc: Charles Keepax, dmitry.torokhov@gmail.com, Ben Bright,
James Ogletree, lee@kernel.org, jdelvare@suse.de, joel@jms.id.au,
cy_huang@richtek.com, rdunlap@infradead.org,
eajames@linux.ibm.com, ping.bai@nxp.com, msp@baylibre.com,
arnd@arndb.de, bartosz.golaszewski@linaro.org,
linux-kernel@vger.kernel.org, linux-input@vger.kernel.org,
patches@opensource.cirrus.com
In-Reply-To: <ZDsPGYJjCNmtizKk@nixie71>
Hi Jeff,
I had one last question for you before I send the next version of this submission.
>> +
>> + return 0;
>> +}
>> +EXPORT_SYMBOL_GPL(cs40l26_remove);
>> +
>> +static int cs40l26_suspend(struct device *dev)
>> +{
>> + struct cs40l26_private *cs40l26 = dev_get_drvdata(dev);
>> + int ret;
>> +
>> + mutex_lock(&cs40l26->lock);
>> + dev_dbg(dev, "%s: Enabling hibernation\n", __func__);
>> +
>> + ret = cs40l26_allow_hiber(cs40l26);
>> +
>> + mutex_unlock(&cs40l26->lock);
>> +
>> + return ret;
>> +}
>> +
>> +static int cs40l26_sys_suspend(struct device *dev)
>> +{
>> + struct i2c_client *i2c_client = to_i2c_client(dev);
>> +
>> + dev_dbg(dev, "System suspend, disabling IRQ\n");
>> +
>> + disable_irq(i2c_client->irq);
>> +
>> + return 0;
>> +}
>> +
>> +static int cs40l26_sys_suspend_noirq(struct device *dev)
>> +{
>> + struct i2c_client *i2c_client = to_i2c_client(dev);
>> +
>> + dev_dbg(dev, "Late system suspend, re-enabling IRQ\n");
>> + enable_irq(i2c_client->irq);
>> +
>> + return 0;
>> +}
>> +
>> +static int cs40l26_resume(struct device *dev)
>> +{
>> + dev_dbg(dev, "%s: Disabling hibernation\n", __func__);
>> +
>> + return cs40l26_prevent_hiber(dev_get_drvdata(dev));
>> +}
>> +
>> +static int cs40l26_sys_resume(struct device *dev)
>> +{
>> + struct i2c_client *i2c_client = to_i2c_client(dev);
>> +
>> + dev_dbg(dev, "System resume, re-enabling IRQ\n");
>> +
>> + enable_irq(i2c_client->irq);
>> +
>> + return 0;
>> +}
>> +
>> +static int cs40l26_sys_resume_noirq(struct device *dev)
>> +{
>> + struct i2c_client *i2c_client = to_i2c_client(dev);
>> +
>> + dev_dbg(dev, "Early system resume, disabling IRQ\n");
>> +
>> + disable_irq(i2c_client->irq);
>> +
>> + return 0;
>> +}
>> +
>> +const struct dev_pm_ops cs40l26_pm_ops = {
>> + SET_RUNTIME_PM_OPS(cs40l26_suspend, cs40l26_resume, NULL)
>> + SET_SYSTEM_SLEEP_PM_OPS(cs40l26_sys_suspend, cs40l26_sys_resume)
>> + SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(cs40l26_sys_suspend_noirq, cs40l26_sys_resume_noirq)
>> +};
>> +EXPORT_SYMBOL_GPL(cs40l26_pm_ops);
>
> Please use latest macros (e.g. DEFINE_SIMPLE_DEV_PM_OPS).
When looking at these *_PM_OPS* macros that replace the deprecated versions, it is unclear to me how to maintain support for *_sys_* and
*_sys_*_noirq* functions. Would these all need to be separately defined via DEFINE_SIMPLE_DEV_PM_OPS?
Would the *_sys_* definitions still be defined through a struct i.e.
const struct dev_pm_ops cs40l26_sys_pm_ops which is then exported as it is in my initial submission?
I’m unsure how to handle these cases with the latest macros.
Appreciate any guidance you can provide.
Best regards,
Fred
^ permalink raw reply
* [PATCH v3 1/1] Input: cyttsp5 - implement proper sleep and wakeup procedures
From: Maximilian Weigand @ 2023-05-04 12:03 UTC (permalink / raw)
To: Linus Walleij, Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski,
linux-input, linux-kernel, devicetree
Cc: Maximilian Weigand, Alistair Francis
In-Reply-To: <20230504120316.408687-1-mweigand2017@gmail.com>
From: Maximilian Weigand <mweigand@mweigand.net>
The touchscreen can be put into a deep sleep state that prevents it from
emitting touch irqs. Put the touchscreen into deep sleep during suspend
if it is not marked as a wakeup source.
This also fixes a problem with the touchscreen getting unresponsive after
system resume when a falling edge trigger is used for the interrupt.
When left on during suspend, the touchscreen would pull the interrupt
line down in response to touch events, leaving the interrupt effectively
disabled after resume.
Signed-off-by: Maximilian Weigand <mweigand@mweigand.net>
Reviewed-by: Alistair Francis <alistair@alistair23.me>
---
drivers/input/touchscreen/cyttsp5.c | 118 ++++++++++++++++++++++++++++
1 file changed, 118 insertions(+)
diff --git a/drivers/input/touchscreen/cyttsp5.c b/drivers/input/touchscreen/cyttsp5.c
index 30102cb80fac..bdb63eeed59c 100644
--- a/drivers/input/touchscreen/cyttsp5.c
+++ b/drivers/input/touchscreen/cyttsp5.c
@@ -43,6 +43,7 @@
#define HID_DESC_REG 0x1
#define HID_INPUT_REG 0x3
#define HID_OUTPUT_REG 0x4
+#define HID_COMMAND_REG 0x5
#define REPORT_ID_TOUCH 0x1
#define REPORT_ID_BTN 0x3
@@ -68,6 +69,7 @@
#define HID_APP_OUTPUT_REPORT_ID 0x2F
#define HID_BL_RESPONSE_REPORT_ID 0x30
#define HID_BL_OUTPUT_REPORT_ID 0x40
+#define HID_RESPONSE_REPORT_ID 0xF0
#define HID_OUTPUT_RESPONSE_REPORT_OFFSET 2
#define HID_OUTPUT_RESPONSE_CMD_OFFSET 4
@@ -78,9 +80,15 @@
#define HID_SYSINFO_BTN_MASK GENMASK(7, 0)
#define HID_SYSINFO_MAX_BTN 8
+#define HID_CMD_SET_POWER 0x8
+
+#define HID_POWER_ON 0x0
+#define HID_POWER_SLEEP 0x1
+
#define CY_HID_OUTPUT_TIMEOUT_MS 200
#define CY_HID_OUTPUT_GET_SYSINFO_TIMEOUT_MS 3000
#define CY_HID_GET_HID_DESCRIPTOR_TIMEOUT_MS 4000
+#define CY_HID_SET_POWER_TIMEOUT 500
/* maximum number of concurrent tracks */
#define TOUCH_REPORT_SIZE 10
@@ -100,6 +108,14 @@
#define TOUCH_REPORT_USAGE_PG_MIN 0xFF010063
#define TOUCH_COL_USAGE_PG 0x000D0022
+#define SET_CMD_LOW(byte, bits) \
+ ((byte) = (((byte) & 0xF0) | ((bits) & 0x0F)))
+#define SET_CMD_HIGH(byte, bits)\
+ ((byte) = (((byte) & 0x0F) | ((bits) & 0xF0)))
+#define SET_CMD_OPCODE(byte, opcode) SET_CMD_LOW(byte, opcode)
+#define SET_CMD_REPORT_TYPE(byte, type) SET_CMD_HIGH(byte, ((type) << 4))
+#define SET_CMD_REPORT_ID(byte, id) SET_CMD_LOW(byte, id)
+
/* System Information interface definitions */
struct cyttsp5_sensing_conf_data_dev {
u8 electrodes_x;
@@ -557,6 +573,82 @@ static int cyttsp5_hid_output_get_sysinfo(struct cyttsp5 *ts)
return cyttsp5_get_sysinfo_regs(ts);
}
+static int cyttsp5_enter_sleep(struct cyttsp5 *ts)
+{
+ int rc;
+ u8 cmd[2];
+
+ memset(cmd, 0, sizeof(cmd));
+
+ SET_CMD_REPORT_TYPE(cmd[0], 0);
+ SET_CMD_REPORT_ID(cmd[0], HID_POWER_SLEEP);
+ SET_CMD_OPCODE(cmd[1], HID_CMD_SET_POWER);
+
+ rc = cyttsp5_write(ts, HID_COMMAND_REG, cmd, 2);
+ if (rc) {
+ dev_err(ts->dev, "Failed to write command %d", rc);
+ return rc;
+ }
+
+ rc = wait_for_completion_interruptible_timeout(&ts->cmd_done,
+ msecs_to_jiffies(CY_HID_SET_POWER_TIMEOUT));
+ if (rc <= 0) {
+ dev_err(ts->dev, "HID output cmd execution timed out\n");
+ rc = -ETIMEDOUT;
+ return rc;
+ }
+
+ /* validate */
+ if ((ts->response_buf[2] != HID_RESPONSE_REPORT_ID)
+ || ((ts->response_buf[3] & 0x3) != HID_POWER_SLEEP)
+ || ((ts->response_buf[4] & 0xF) != HID_CMD_SET_POWER)) {
+ rc = -EINVAL;
+ dev_err(ts->dev, "Validation of the sleep response failed\n");
+ return rc;
+ }
+
+ return 0;
+
+}
+
+static int cyttsp5_wakeup(struct cyttsp5 *ts)
+{
+ int rc;
+ u8 cmd[2];
+
+ memset(cmd, 0, sizeof(cmd));
+
+ SET_CMD_REPORT_TYPE(cmd[0], 0);
+ SET_CMD_REPORT_ID(cmd[0], HID_POWER_ON);
+ SET_CMD_OPCODE(cmd[1], HID_CMD_SET_POWER);
+
+ rc = cyttsp5_write(ts, HID_COMMAND_REG, cmd, 2);
+ if (rc) {
+ dev_err(ts->dev, "Failed to write command %d", rc);
+ return rc;
+ }
+
+ rc = wait_for_completion_interruptible_timeout(&ts->cmd_done,
+ msecs_to_jiffies(CY_HID_SET_POWER_TIMEOUT));
+ if (rc <= 0) {
+ dev_err(ts->dev, "HID output cmd execution timed out\n");
+ rc = -ETIMEDOUT;
+ return rc;
+ }
+
+ /* validate */
+ if ((ts->response_buf[2] != HID_RESPONSE_REPORT_ID)
+ || ((ts->response_buf[3] & 0x3) != HID_POWER_ON)
+ || ((ts->response_buf[4] & 0xF) != HID_CMD_SET_POWER)) {
+ rc = -EINVAL;
+ dev_err(ts->dev, "Validation of the wakeup response failed\n");
+ return rc;
+ }
+
+ return 0;
+
+}
+
static int cyttsp5_hid_output_bl_launch_app(struct cyttsp5 *ts)
{
int rc;
@@ -675,6 +767,10 @@ static irqreturn_t cyttsp5_handle_irq(int irq, void *handle)
case HID_BTN_REPORT_ID:
cyttsp5_btn_attention(ts->dev);
break;
+ case HID_RESPONSE_REPORT_ID:
+ memcpy(ts->response_buf, ts->input_buf, size);
+ complete(&ts->cmd_done);
+ break;
default:
/* It is not an input but a command response */
memcpy(ts->response_buf, ts->input_buf, size);
@@ -886,10 +982,32 @@ static const struct i2c_device_id cyttsp5_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, cyttsp5_i2c_id);
+static int __maybe_unused cyttsp5_suspend(struct device *dev)
+{
+ struct cyttsp5 *ts = dev_get_drvdata(dev);
+
+ if (!device_may_wakeup(dev))
+ cyttsp5_enter_sleep(ts);
+ return 0;
+}
+
+static int __maybe_unused cyttsp5_resume(struct device *dev)
+{
+ struct cyttsp5 *ts = dev_get_drvdata(dev);
+
+ if (!device_may_wakeup(dev))
+ cyttsp5_wakeup(ts);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(cyttsp5_pm, cyttsp5_suspend, cyttsp5_resume);
+
static struct i2c_driver cyttsp5_i2c_driver = {
.driver = {
.name = CYTTSP5_NAME,
.of_match_table = cyttsp5_of_match,
+ .pm = &cyttsp5_pm,
},
.probe_new = cyttsp5_i2c_probe,
.id_table = cyttsp5_i2c_id,
--
2.39.2
^ permalink raw reply related
* [PATCH v3 0/1] Small fixes to the cyttsp5 touchscreen driver
From: Maximilian Weigand @ 2023-05-04 12:03 UTC (permalink / raw)
To: Linus Walleij, Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski,
linux-input, linux-kernel, devicetree
Cc: Maximilian Weigand, Alistair Francis
From: Maximilian Weigand <mweigand@mweigand.net>
Currently the cyttsp5 driver does not put the device to sleep during
suspend, which can have unwanted side effects if an irq trigger of type
EDGE_FALLING is used, as well as leads to increased power usage.
Correspondingly, sleep and wakeup commands to the touchscreen were
derived from the GPL-2 vendor/android driver by Cypress Semiconductor
(copyright note for Cypress Semiconductor is already in the current
driver).
Tested on the Pine64 PineNote.
Changes in v3:
- dropped patches 1,2,5: already applied in v2
- dropped patch 4 "Input: cyttsp5 - properly initialize the device as a
pm wakeup device" - functionality is already taken care of in the
kernel
- dropped patch 3 "dt-bindings: input: cypress,tt21000 - fix interrupt
type in dts example": it was suggested that the driver should work
with both interrupt types, falling edge and level low. Once a solution
is found it will be submitted as a separate patch.
- reworked patch 6 "Input: cyttsp5 - implement proper sleep and wakeup
procedures" in response to review comments:
- use the existing completion instead of adding a new one for
sleep/wakeup command handling
- use device_may_wakeup() to determine if the device should be
suspended upon entering standby
- clarified commit message
Changes in v2:
- fix subject lines
- fix 'unused variable' errors reported by the kernel test robot
- clean up commit message of patch 2
Maximilian Weigand (1):
Input: cyttsp5 - implement proper sleep and wakeup procedures
drivers/input/touchscreen/cyttsp5.c | 118 ++++++++++++++++++++++++++++
1 file changed, 118 insertions(+)
base-commit: 457391b0380335d5e9a5babdec90ac53928b23b4
--
2.39.2
^ permalink raw reply
* Re: [PATCH] Input: tests - fix input_test_match_device_id test
From: Geert Uytterhoeven @ 2023-05-04 6:51 UTC (permalink / raw)
To: Dmitry Torokhov; +Cc: linux-input, Javier Martinez Canillas, linux-kernel
In-Reply-To: <ZFLI7T2qZTGJ1UUK@google.com>
On Wed, May 3, 2023 at 10:49 PM Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
> Properly initialize input_device_id structure in
> input_test_match_device_id test to make sure it contains no garbage
> causing the test to randomly fail.
>
> Fixes: fdefcbdd6f36 ("Input: Add KUnit tests for some of the input core helper functions")
> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply
* Re: [PATCH 2/2] Input: tests - modular KUnit tests should not depend on KUNIT=y
From: David Gow @ 2023-05-04 6:29 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Dmitry Torokhov, Javier Martinez Canillas, Brendan Higgins,
linux-input, linux-kselftest, kunit-dev, linux-kernel
In-Reply-To: <483c4f520e4acc6357ebba3e605977b4c56374df.1683022164.git.geert+renesas@glider.be>
On Tue, 2 May 2023 at 18:17, Geert Uytterhoeven <geert+renesas@glider.be> wrote:
>
> While KUnit tests that cannot be built as a loadable module must depend
> on "KUNIT=y", this is not true for modular tests, where it adds an
> unnecessary limitation.
>
> Fix this by relaxing the dependency to "KUNIT".
>
> Fixes: fdefcbdd6f361841 ("Input: Add KUnit tests for some of the input core helper functions")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
Works here, thanks!
Reviewed-by: David Gow <davidgow@google.com>
Cheers,
-- David
> drivers/input/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig
> index 735f90b74ee5ad44..3bdbd34314b3495a 100644
> --- a/drivers/input/Kconfig
> +++ b/drivers/input/Kconfig
> @@ -168,7 +168,7 @@ config INPUT_EVBUG
>
> config INPUT_KUNIT_TEST
> tristate "KUnit tests for Input" if !KUNIT_ALL_TESTS
> - depends on INPUT && KUNIT=y
> + depends on INPUT && KUNIT
> default KUNIT_ALL_TESTS
> help
> Say Y here if you want to build the KUnit tests for the input
> --
> 2.34.1
>
^ permalink raw reply
* Re: [PATCH] HID: uclogic: Modular KUnit tests should not depend on KUNIT=y
From: David Gow @ 2023-05-04 6:04 UTC (permalink / raw)
To: Geert Uytterhoeven
Cc: Jiri Kosina, Benjamin Tissoires, Daniel Latypov,
José Expósito, Brendan Higgins, linux-input,
linux-kselftest, kunit-dev, linux-kernel
In-Reply-To: <36ddf432f0f46530875fa15f002012c921a380a3.1683022021.git.geert+renesas@glider.be>
On Tue, 2 May 2023 at 18:09, Geert Uytterhoeven <geert+renesas@glider.be> wrote:
>
> While KUnit tests that cannot be built as a loadable module must depend
> on "KUNIT=y", this is not true for modular tests, where it adds an
> unnecessary limitation.
>
> Fix this by relaxing the dependency to "KUNIT".
>
> Fixes: 08809e482a1c44d9 ("HID: uclogic: KUnit best practices and naming conventions")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
This works here, and I definitely agree we should get rid of these
unnecessary constraints.
Let me know if this should go in via the kselftest/kunit tree, or if
it makes sense to take this via input?
Reviewed-by: David Gow <davidgow@google.com>
Cheers,
-- David
> drivers/hid/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
> index 4ce012f83253ec9f..b977450cac75265d 100644
> --- a/drivers/hid/Kconfig
> +++ b/drivers/hid/Kconfig
> @@ -1285,7 +1285,7 @@ config HID_MCP2221
>
> config HID_KUNIT_TEST
> tristate "KUnit tests for HID" if !KUNIT_ALL_TESTS
> - depends on KUNIT=y
> + depends on KUNIT
> depends on HID_BATTERY_STRENGTH
> depends on HID_UCLOGIC
> default KUNIT_ALL_TESTS
> --
> 2.34.1
>
^ permalink raw reply
* Re: [PATCH] HID: wacom: Check for string overflow from strscpy calls
From: Peter Hutterer @ 2023-05-04 4:34 UTC (permalink / raw)
To: Jason Gerecke
Cc: linux-input, Benjamin Tissoires, Jiri Kosina, Ping Cheng,
Aaron Armstrong Skomra, Joshua Dickens, Jason Gerecke, Ping Cheng
In-Reply-To: <20230414182210.383218-1-jason.gerecke@wacom.com>
On Fri, Apr 14, 2023 at 11:22:10AM -0700, Jason Gerecke wrote:
> From: Jason Gerecke <killertofu@gmail.com>
>
> The strscpy function is able to return an error code when a copy would
> overflow the size of the destination. The copy is stopped and the buffer
> terminated before overflow actually occurs so it is safe to continue
> execution, but we should still produce a warning should this occur.
>
> Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
> Reviewed-by: Ping Cheng <ping.cheng@wacom.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Cheers,
Peter
> ---
> drivers/hid/wacom_sys.c | 14 ++++++++++----
> 1 file changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
> index 8214896adadad..7192970d199a0 100644
> --- a/drivers/hid/wacom_sys.c
> +++ b/drivers/hid/wacom_sys.c
> @@ -2224,7 +2224,9 @@ static void wacom_update_name(struct wacom *wacom, const char *suffix)
> } else if (strstr(product_name, "Wacom") ||
> strstr(product_name, "wacom") ||
> strstr(product_name, "WACOM")) {
> - strscpy(name, product_name, sizeof(name));
> + if (strscpy(name, product_name, sizeof(name)) < 0) {
> + hid_warn(wacom->hdev, "String overflow while assembling device name");
> + }
> } else {
> snprintf(name, sizeof(name), "Wacom %s", product_name);
> }
> @@ -2242,7 +2244,9 @@ static void wacom_update_name(struct wacom *wacom, const char *suffix)
> if (name[strlen(name)-1] == ' ')
> name[strlen(name)-1] = '\0';
> } else {
> - strscpy(name, features->name, sizeof(name));
> + if (strscpy(name, features->name, sizeof(name)) < 0) {
> + hid_warn(wacom->hdev, "String overflow while assembling device name");
> + }
> }
>
> snprintf(wacom_wac->name, sizeof(wacom_wac->name), "%s%s",
> @@ -2500,8 +2504,10 @@ static void wacom_wireless_work(struct work_struct *work)
> goto fail;
> }
>
> - strscpy(wacom_wac->name, wacom_wac1->name,
> - sizeof(wacom_wac->name));
> + if (strscpy(wacom_wac->name, wacom_wac1->name,
> + sizeof(wacom_wac->name)) < 0) {
> + hid_warn(wacom->hdev, "String overflow while assembling device name");
> + }
> }
>
> return;
> --
> 2.40.0
>
^ permalink raw reply
* Re: [RFC v1 0/4] Input: support virtual objects on touchscreens
From: Peter Hutterer @ 2023-05-04 4:29 UTC (permalink / raw)
To: Jeff LaBundy
Cc: Javier Carrasco, Thomas Weißschuh, linux-input, devicetree,
linux-kernel, Dmitry Torokhov, Rob Herring, Krzysztof Kozlowski,
Henrik Rydberg, Ulf Hansson, Hans Verkuil, Stephen Boyd,
Sebastian Reichel, Linus Walleij, Jonathan Cameron, Uwe Kleine-g,
Bastian Hecht, Michael Riesch
In-Reply-To: <ZEqvgnhzm7r4O7hz@nixie71>
On Thu, Apr 27, 2023 at 12:23:14PM -0500, Jeff LaBundy wrote:
> Hi Javier,
>
> On Thu, Apr 27, 2023 at 05:59:42PM +0200, Javier Carrasco wrote:
> > Hi,
> >
> > On 25.04.23 18:02, Jeff LaBundy wrote:
> > > Hi Thomas,
> > >
> > > On Tue, Apr 25, 2023 at 05:29:39PM +0200, Thomas Weißschuh wrote:
> > >> Hi Javier,
> > >>
> > >> On 2023-04-25 13:50:45+0200, Javier Carrasco wrote:
> > >>> Some touchscreens are shipped with a physical layer on top of them where
> > >>> a number of buttons and a resized touchscreen surface might be available.
> > >>>
> > >>> In order to generate proper key events by overlay buttons and adjust the
> > >>> touch events to a clipped surface, these patches offer a documented,
> > >>> device-tree-based solution by means of helper functions.
> > >>> An implementation for a specific touchscreen driver is also included.
> > >>>
> > >>> The functions in ts-virtobj provide a simple workflow to acquire
> > >>> physical objects from the device tree, map them into the device driver
> > >>> structures as virtual objects and generate events according to
> > >>> the object descriptions.
> > >>>
> > >>> This solution has been tested with a JT240MHQS-E3 display, which uses
> > >>> the st1624 as a touchscreen and provides two overly buttons and a frame
> > >>> that clips its effective surface.
> > >>
> > >> There are quite a few of notebooks from Asus that feature a printed
> > >> numpad on their touchpad [0]. The mapping from the touch events to the
> > >> numpad events needs to happen in software.
> > >
> > > That example seems a kind of fringe use-case in my opinion; I think the
> > > gap filled by this RFC is the case where a touchscreen has a printed
> > > overlay with a key that represents a fixed function.
> >
> > Exactly, this RFC addresses exactly such printed overlays.
> > >
> > > One problem I do see here is something like libinput or multitouch taking
> > > hold of the input device, and swallowing the key presses because it sees
> > > the device as a touchscreen and is not interested in these keys.
> >
> > Unfortunately I do not know libinput or multitouch and I might be
> > getting you wrong, but I guess the same would apply to any event
> > consumer that takes touchscreens as touch event producers and nothing else.
> >
> > Should they not check the supported events from the device instead of
> > making such assumptions? This RFC adds key events defined in the device
> > tree and they are therefore available and published as device
> > capabilities. That is for example what evtest does to report the
> > supported events and they are then notified accordingly. Is that not the
> > right way to do it?
>
> evtest is just that, a test tool. It's handy for ensuring the device emits
> the appropriate input events in response to hardware inputs, but it is not
> necessarily representative of how the input device may be used in practice.
ftr, I strongly recommend "libinput record" over evtest since it can be
replayed. And for libinput testing "libinput debug-events" to see what
comes out of libinput.
> I would encourage you to test this solution with a simple use-case such as
> Raspbian, and the virtual keys mapped to easily recognizable functions like
> volume up/down.
>
> Here, you will find that libinput will grab the device and declare it to be
> a touchscreen based on the input events it advertises. However, you will not
> see volume up/down keys are handled.
that would be a bug in libinput. libinput doesn't classify devices. It
uses *internal* backends but the backend for keyboard and touchscreen
devices is the same. So as long as your device advertises the various
EV_KEY and EV_ABS bit correctly, things should just work. If that's not
the case for a device please file a bug.
It's still "better" to split it up into different event nodes because
a lot of userspace may not be able to handle touchscreen+keyboard
devices but at least at the libinput level this shouldn't be a problem.
And the xf86-input-libinput driver splits up such devices at the X
level, so even where a device is touchscreen + keyboard you would end up
with two X devices with separate capabilities so they fit into the X
"everything is either a pointer or a keyboard" worldview.
Cheers,
Peter
^ permalink raw reply
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