From: Patrick Delaunay Date: Mon, 13 Jan 2020 10:35:05 +0000 (+0100) Subject: gpio: add helper GPIOD_FLAGS_OUTPUT X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=9360bb06f1db4597b7d08ea95b48a17025a97618;p=u-boot.git gpio: add helper GPIOD_FLAGS_OUTPUT Add a macro to provide the GPIO output value according the dir flags content. Signed-off-by: Patrick Delaunay Reviewed-by: Simon Glass --- diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index b5cebfdbc6..29c8c0f57b 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -542,12 +542,9 @@ static int _dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags) } if (flags & GPIOD_IS_OUT) { - int value = flags & GPIOD_IS_OUT_ACTIVE ? 1 : 0; - - if (flags & GPIOD_ACTIVE_LOW) - value = !value; - ret = ops->direction_output(dev, desc->offset, value); - } else if (flags & GPIOD_IS_IN) { + ret = ops->direction_output(dev, desc->offset, + GPIOD_FLAGS_OUTPUT(flags)); + } else if (flags & GPIOD_IS_IN) { ret = ops->direction_input(dev, desc->offset); } diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 4d5348d8c8..5686df7cec 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -129,6 +129,12 @@ struct gpio_desc { */ }; +/* helper to compute the value of the gpio output */ +#define GPIOD_FLAGS_OUTPUT_MASK (GPIOD_ACTIVE_LOW | GPIOD_IS_OUT_ACTIVE) +#define GPIOD_FLAGS_OUTPUT(flags) \ + (((((flags) & GPIOD_FLAGS_OUTPUT_MASK) == GPIOD_IS_OUT_ACTIVE) || \ + (((flags) & GPIOD_FLAGS_OUTPUT_MASK) == GPIOD_ACTIVE_LOW))) + /** * dm_gpio_is_valid() - Check if a GPIO is valid *