Pinctrl nodes adhering to the generic pinctrl bindings may contain properties like input-low/input-high, which require pinctrl_ops.set_state to have a handle on the relevant gpio chip.
Currently this would lead to code duplication: Both the pinctrl driver and gpiolib will need to store a list of registered gpiochips. Avoid this by providing a helper to query the registered gpio_chip given a gpio's number. Signed-off-by: Ahmad Fatoum <[email protected]> --- drivers/gpio/gpiolib.c | 7 +++++++ include/gpio.h | 1 + 2 files changed, 8 insertions(+) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 4c7aee4a0b19..f96009896a41 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -475,6 +475,13 @@ int gpio_get_num(struct device_d *dev, int gpio) return -EPROBE_DEFER; } +struct gpio_chip *gpio_get_chip(int gpio) +{ + struct gpio_info *gi = gpio_to_desc(gpio); + + return gi ? gi->chip : NULL; +} + #ifdef CONFIG_CMD_GPIO static int do_gpiolib(int argc, char *argv[]) { diff --git a/include/gpio.h b/include/gpio.h index 38d6ba2df913..e822fd53475d 100644 --- a/include/gpio.h +++ b/include/gpio.h @@ -153,5 +153,6 @@ int gpiochip_add(struct gpio_chip *chip); void gpiochip_remove(struct gpio_chip *chip); int gpio_get_num(struct device_d *dev, int gpio); +struct gpio_chip *gpio_get_chip(int gpio); #endif /* __GPIO_H */ -- 2.20.1 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
