[PATCH v6 6/8] gpio: regmap: Add set_config callback

[Yu-Chun Lin <eleanor.lin@realtek.com>]

Add a new set_config callback to struct gpio_regmap_config to allow drivers
to implement hardware-specific configuration such as debounce settings,
or other platform-specific GPIO properties.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
Changes in v6:
- None.
---
 drivers/gpio/gpio-regmap.c  | 1 +
 include/linux/gpio/regmap.h | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpio/gpio-regmap.c b/drivers/gpio/gpio-regmap.c
index aecc35f610dd..b856326ff01c 100644
--- a/drivers/gpio/gpio-regmap.c
+++ b/drivers/gpio/gpio-regmap.c
@@ -454,6 +454,7 @@ struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config
 		gpio->reg_mask_xlate = gpio_regmap_simple_xlate;
 
 	gpio->value_xlate = config->value_xlate;
+	chip->set_config = config->set_config;
 
 	ret = gpiochip_add_data(chip, gpio);
 	if (ret < 0)
diff --git a/include/linux/gpio/regmap.h b/include/linux/gpio/regmap.h
index 45a30f50043f..23460995c1d1 100644
--- a/include/linux/gpio/regmap.h
+++ b/include/linux/gpio/regmap.h
@@ -89,6 +89,9 @@ enum gpio_regmap_operation {
  *			mask before writing. This allows driver-specific logic
  *			to append additional bits (like write-enable masks)
  *			dynamically based on the current operation.
+ * @set_config:		(Optional) Callback for setting GPIO configuration such
+ *			as debounce, drive strength, or other hardware specific
+ *			settings.
  * @drvdata:		(Optional) Pointer to driver specific data which is
  *			not used by gpio-remap but is provided "as is" to the
  *			driver callback(s).
@@ -150,6 +153,8 @@ struct gpio_regmap_config {
 			   unsigned int base, unsigned int offset, unsigned int reg,
 			   unsigned int *mask, unsigned int *val);
 
+	int (*set_config)(struct gpio_chip *gc, unsigned int offset, unsigned long config);
+
 	void *drvdata;
 };
 
-- 
2.43.0