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gpio: regmap: Always set gpio_chip get_direction

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If you only have reg_dat_base set, then it is input-only; if you only
have reg_set_base set, then it is output-only. Thus, we can always set
gpio_chip get_direction to gpio_regmap_get_direction and return
GPIO_LINE_DIRECTION_IN/GPIO_LINE_DIRECTION_OUT given the respective
register base addresses configuration.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Michael Walle <michael@walle.cc>
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
William Breathitt Gray 2022-12-27 09:09:39 -05:00 committed by Bartosz Golaszewski
parent 9eeaa60ead
commit 8978277c22
1 changed files with 6 additions and 1 deletions
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7
drivers/gpio/gpio-regmap.c
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@ -111,6 +111,11 @@ static int gpio_regmap_get_direction(struct gpio_chip *chip,
unsigned int base, val, reg, mask;
int invert, ret;
if (gpio->reg_dat_base && !gpio->reg_set_base)
return GPIO_LINE_DIRECTION_IN;
if (gpio->reg_set_base && !gpio->reg_dat_base)
return GPIO_LINE_DIRECTION_OUT;
if (gpio->reg_dir_out_base) {
base = gpio_regmap_addr(gpio->reg_dir_out_base);
invert = 0;
@ -265,8 +270,8 @@ struct gpio_regmap *gpio_regmap_register(const struct gpio_regmap_config *config
else if (gpio->reg_set_base)
chip->set = gpio_regmap_set;
chip->get_direction = gpio_regmap_get_direction;
if (gpio->reg_dir_in_base || gpio->reg_dir_out_base) {
chip->get_direction = gpio_regmap_get_direction;
chip->direction_input = gpio_regmap_direction_input;
chip->direction_output = gpio_regmap_direction_output;
}