Re: [PATCH v2 2/4] pinctrl: amd: Use amd_pinconf_set() for all config options

From: Limonciello, Mario
Date: Thu Jul 06 2023 - 10:30:46 EST


On 7/6/2023 04:16, Andy Shevchenko wrote:
On Wed, Jul 05, 2023 at 08:30:03AM -0500, Mario Limonciello wrote:
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`.

...

@@ -782,7 +770,7 @@ 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)

Seems like a stray change.

Right; if necessary I'll pull this into it's own patch instead of s,unsigned,unsigned long, in this one. It just seemed sensible while calling this function.


{
int i;
u32 arg;

Otherwise entire series looks good to me,
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>


Thanks!