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Subject[PATCH 4/4] pinctrl: amd: Use amd_pinconf_set() for all config options
Date
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@gmx.de/
Fixes: 2956b5d94a76b ("pinctrl / gpio: Introduce .set_config() callback for GPIO chips")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
drivers/pinctrl/pinctrl-amd.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index a22e02e2f5d35..76fabf4404a6c 100644
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -852,9 +852,6 @@ static int amd_gpio_set_config(struct gpio_chip *gc, unsigned pin,
{
struct amd_gpio *gpio_dev = gpiochip_get_data(gc);

- if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
- return -ENOTSUPP;
-
return amd_pinconf_set(gpio_dev->pctrl, pin, &config, 1);
}

--
2.34.1
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