From: Mario Limonciello mario.limonciello@amd.com
[ Upstream commit 635a750d958e158e17af0f524bedc484b27fbb93 ]
On ASUS TUF A16 it is reported that the ITE5570 ACPI device connected to GPIO 7 is causing an interrupt storm. This issue doesn't happen on Windows.
Comparing the GPIO register configuration between Windows and Linux bit 20 has been configured as a pull up on Windows, but not on Linux. Checking GPIO declaration from the firmware it is clear it *should* have been a pull up on Linux as well.
``` GpioInt (Level, ActiveLow, Exclusive, PullUp, 0x0000, "\_SB.GPIO", 0x00, ResourceConsumer, ,) { // Pin list 0x0007 } ```
On Linux amd_gpio_set_config() is currently only used for programming the debounce. Actually the GPIO core calls it with all the arguments that are supported by a GPIO, pinctrl-amd just responds `-ENOTSUPP`.
To solve this issue expand amd_gpio_set_config() to support the other arguments amd_pinconf_set() supports, namely `PIN_CONFIG_BIAS_PULL_DOWN`, `PIN_CONFIG_BIAS_PULL_UP`, and `PIN_CONFIG_DRIVE_STRENGTH`.
Reported-by: Nik P npliashechnikov@gmail.com Reported-by: Nathan Schulte nmschulte@gmail.com Reported-by: Friedrich Vock friedrich.vock@gmx.de Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217336 Reported-by: dridri85@gmail.com Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217493 Link: https://lore.kernel.org/linux-input/20230530154058.17594-1-friedrich.vock@gm... Tested-by: Jan Visser starquake@linuxeverywhere.org Fixes: 2956b5d94a76 ("pinctrl / gpio: Introduce .set_config() callback for GPIO chips") Signed-off-by: Mario Limonciello mario.limonciello@amd.com Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Link: https://lore.kernel.org/r/20230705133005.577-3-mario.limonciello@amd.com Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/pinctrl-amd.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c index c57f91f484235..fbec8a07e942e 100644 --- a/drivers/pinctrl/pinctrl-amd.c +++ b/drivers/pinctrl/pinctrl-amd.c @@ -169,18 +169,6 @@ static int amd_gpio_set_debounce(struct gpio_chip *gc, unsigned offset, return ret; }
-static int amd_gpio_set_config(struct gpio_chip *gc, unsigned offset, - unsigned long config) -{ - u32 debounce; - - if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE) - return -ENOTSUPP; - - debounce = pinconf_to_config_argument(config); - return amd_gpio_set_debounce(gc, offset, debounce); -} - #ifdef CONFIG_DEBUG_FS static void amd_gpio_dbg_show(struct seq_file *s, struct gpio_chip *gc) { @@ -632,7 +620,7 @@ static int amd_pinconf_get(struct pinctrl_dev *pctldev, }
static int amd_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, - unsigned long *configs, unsigned num_configs) + unsigned long *configs, unsigned int num_configs) { int i; u32 arg; @@ -722,6 +710,20 @@ static int amd_pinconf_group_set(struct pinctrl_dev *pctldev, return 0; }
+static int amd_gpio_set_config(struct gpio_chip *gc, unsigned int pin, + unsigned long config) +{ + struct amd_gpio *gpio_dev = gpiochip_get_data(gc); + + if (pinconf_to_config_param(config) == PIN_CONFIG_INPUT_DEBOUNCE) { + u32 debounce = pinconf_to_config_argument(config); + + return amd_gpio_set_debounce(gc, pin, debounce); + } + + return amd_pinconf_set(gpio_dev->pctrl, pin, &config, 1); +} + static const struct pinconf_ops amd_pinconf_ops = { .pin_config_get = amd_pinconf_get, .pin_config_set = amd_pinconf_set,