| Message ID | e3a74a28d9c0831fe798909d95695dc978d43030.1572946015.git.matti.vaittinen@fi.rohmeurope.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | None | expand |
On 05. 11. 19 11:40, Matti Vaittinen wrote: > It's hard for occasional GPIO code reader/writer to know if values 0/1 > equal to IN or OUT. Use defined GPIO_LINE_DIRECTION_IN and > GPIO_LINE_DIRECTION_OUT to help them out. > > Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> > --- > drivers/gpio/gpio-zynq.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c > index cd475ff4bcad..4c3f6370eab4 100644 > --- a/drivers/gpio/gpio-zynq.c > +++ b/drivers/gpio/gpio-zynq.c > @@ -360,7 +360,7 @@ static int zynq_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, > * > * This function returns the direction of the specified GPIO. > * > - * Return: 0 for output, 1 for input > + * Return: GPIO_LINE_DIRECTION_OUT or GPIO_LINE_DIRECTION_IN > */ > static int zynq_gpio_get_direction(struct gpio_chip *chip, unsigned int pin) > { > @@ -372,7 +372,10 @@ static int zynq_gpio_get_direction(struct gpio_chip *chip, unsigned int pin) > > reg = readl_relaxed(gpio->base_addr + ZYNQ_GPIO_DIRM_OFFSET(bank_num)); > > - return !(reg & BIT(bank_pin_num)); > + if (reg & BIT(bank_pin_num)) > + return GPIO_LINE_DIRECTION_OUT; > + > + return GPIO_LINE_DIRECTION_IN; > } > > /** > Reviewed-by: Michal Simek <michal.simek@xilinx.com> Thanks, Michal
diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c index cd475ff4bcad..4c3f6370eab4 100644 --- a/drivers/gpio/gpio-zynq.c +++ b/drivers/gpio/gpio-zynq.c @@ -360,7 +360,7 @@ static int zynq_gpio_dir_out(struct gpio_chip *chip, unsigned int pin, * * This function returns the direction of the specified GPIO. * - * Return: 0 for output, 1 for input + * Return: GPIO_LINE_DIRECTION_OUT or GPIO_LINE_DIRECTION_IN */ static int zynq_gpio_get_direction(struct gpio_chip *chip, unsigned int pin) { @@ -372,7 +372,10 @@ static int zynq_gpio_get_direction(struct gpio_chip *chip, unsigned int pin) reg = readl_relaxed(gpio->base_addr + ZYNQ_GPIO_DIRM_OFFSET(bank_num)); - return !(reg & BIT(bank_pin_num)); + if (reg & BIT(bank_pin_num)) + return GPIO_LINE_DIRECTION_OUT; + + return GPIO_LINE_DIRECTION_IN; } /**
It's hard for occasional GPIO code reader/writer to know if values 0/1 equal to IN or OUT. Use defined GPIO_LINE_DIRECTION_IN and GPIO_LINE_DIRECTION_OUT to help them out. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> --- drivers/gpio/gpio-zynq.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)