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gpio: add helper GPIOD_FLAGS_OUTPUT

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Add a macro to provide the GPIO output value according
the dir flags content.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Patrick Delaunay 2020-01-13 11:35:05 +01:00 committed by Tom Rini
parent 4292fb16bf
commit 9360bb06f1
2 changed files with 9 additions and 6 deletions
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9
drivers/gpio/gpio-uclass.c
View File

@ -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);
}

6
include/asm-generic/gpio.h
View File

@ -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
*