Patch "pinctrl: amd: Use amd_pinconf_set() for all config options" has been added to the 6.4-stable tree

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This is a note to let you know that I've just added the patch titled

    pinctrl: amd: Use amd_pinconf_set() for all config options

to the 6.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pinctrl-amd-use-amd_pinconf_set-for-all-config-options.patch
and it can be found in the queue-6.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 635a750d958e158e17af0f524bedc484b27fbb93 Mon Sep 17 00:00:00 2001
From: Mario Limonciello <mario.limonciello@xxxxxxx>
Date: Wed, 5 Jul 2023 08:30:03 -0500
Subject: pinctrl: amd: Use amd_pinconf_set() for all config options

From: Mario Limonciello <mario.limonciello@xxxxxxx>

commit 635a750d958e158e17af0f524bedc484b27fbb93 upstream.

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@xxxxxxxxx>
Reported-by: Nathan Schulte <nmschulte@xxxxxxxxx>
Reported-by: Friedrich Vock <friedrich.vock@xxxxxx>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217336
Reported-by: dridri85@xxxxxxxxx
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217493
Link: https://lore.kernel.org/linux-input/20230530154058.17594-1-friedrich.vock@xxxxxx/
Tested-by: Jan Visser <starquake@xxxxxxxxxxxxxxxxxxx>
Fixes: 2956b5d94a76 ("pinctrl / gpio: Introduce .set_config() callback for GPIO chips")
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230705133005.577-3-mario.limonciello@xxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/pinctrl/pinctrl-amd.c |   28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -188,18 +188,6 @@ static int amd_gpio_set_debounce(struct
 	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)
 {
@@ -782,7 +770,7 @@ static int amd_pinconf_get(struct pinctr
 }
 
 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;
@@ -872,6 +860,20 @@ static int amd_pinconf_group_set(struct
 	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,


Patches currently in stable-queue which might be from mario.limonciello@xxxxxxx are

queue-6.4/pinctrl-amd-detect-internal-gpio0-debounce-handling.patch
queue-6.4/pinctrl-amd-only-use-special-debounce-behavior-for-gpio-0.patch
queue-6.4/pinctrl-amd-revert-pinctrl-amd-disable-and-mask-interrupts-on-probe.patch
queue-6.4/pinctrl-amd-detect-and-mask-spurious-interrupts.patch
queue-6.4/pinctrl-amd-drop-pull-up-select-configuration.patch
queue-6.4/pinctrl-amd-fix-mistake-in-handling-clearing-pins-at-startup.patch
queue-6.4/pinctrl-amd-use-amd_pinconf_set-for-all-config-options.patch
queue-6.4/pinctrl-amd-unify-debounce-handling-into-amd_pinconf_set.patch
queue-6.4/drm-client-send-hotplug-event-after-registering-a-client.patch



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