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gpio: regmap: Add set_config callback

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

Reviewed-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Link: https://patch.msgid.link/20260726125209.140307-8-eleanor.lin@realtek.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
This commit is contained in:
Yu-Chun Lin
2026-07-30 11:05:07 +02:00
committed by Bartosz Golaszewski
parent 5f28e3dbd2
commit ab91ecbc32
2 changed files with 23 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpio/gpio-regmap.c
+17
View File
@@ -51,6 +51,9 @@ struct gpio_regmap {
unsigned int reg, unsigned int *mask,
unsigned int *val);
int (*set_config)(struct gpio_regmap *gpio, struct gpio_chip *chip,
unsigned int offset, unsigned long config);
void *driver_data;
};
@@ -306,6 +309,15 @@ static int gpio_regmap_direction_output(struct gpio_chip *chip,
return gpio_regmap_set_direction(chip, offset, true);
}
static int gpio_regmap_set_config(struct gpio_chip *chip,
unsigned int offset,
unsigned long cfg)
{
struct gpio_regmap *gpio = gpiochip_get_data(chip);
return gpio->set_config(gpio, chip, offset, cfg);
}
int gpio_regmap_reqres_irq(struct gpio_regmap *gpio, unsigned int offset)
{
return gpiochip_reqres_irq(&gpio->gpio_chip, offset);
@@ -444,6 +456,11 @@ struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config
gpio->value_xlate = config->value_xlate;
if (config->set_config) {
gpio->set_config = config->set_config;
chip->set_config = gpio_regmap_set_config;
}
ret = gpiochip_add_data(chip, gpio);
if (ret < 0)
goto err_free_bitmap_output;
include/linux/gpio/regmap.h
+6
View File
@@ -86,6 +86,9 @@ enum gpio_regmap_operation {
* to append additional bits (like write-enable masks)
* dynamically based on the current operation
* (GPIO_REGMAP_SET_OP and GPIO_REGMAP_SET_DIR_OP).
* @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).
@@ -147,6 +150,9 @@ struct gpio_regmap_config {
unsigned int base, unsigned int offset, unsigned int reg,
unsigned int *mask, unsigned int *val);
int (*set_config)(struct gpio_regmap *gpio, struct gpio_chip *chip,
unsigned int offset, unsigned long config);
void *drvdata;
};