Messages in this thread Patch in this message | | | From | Jean-Jacques Hiblot <> | Subject | [PATCH] gpio: take in account the active low flag when configuring the gpio as an ouput | Date | Mon, 10 Feb 2014 16:03:34 +0100 |
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The initial value of the gpio is passed to gpiod_direction_output. Currently this value is the raw value of the GPIO line, but it should be the logical value.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@traphandler.com> --- drivers/gpio/gpiolib.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 4e10b10..111a1f1 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1751,6 +1751,9 @@ int gpiod_direction_output(struct gpio_desc *desc, int value) return -EINVAL; } + if (test_bit(FLAG_ACTIVE_LOW, &desc->flags)) + value = !value; + /* GPIOs used for IRQs shall not be set as output */ if (test_bit(FLAG_USED_AS_IRQ, &desc->flags)) { gpiod_err(desc, -- 1.8.5.3
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