Message ID | 1459177104-24353-1-git-send-email-stefan.wahren@i2se.com |
---|---|
State | New |
Headers | show |
Stefan Wahren <stefan.wahren@i2se.com> writes: > Implement gpio_chip's get_direction() callback, that lets other > drivers get particular GPIOs direction using gpiod_get_direction(). Reviewed-by: Eric Anholt <eric@anholt.net>
On 03/28/2016 08:58 AM, Stefan Wahren wrote: > Implement gpio_chip's get_direction() callback, that lets other > drivers get particular GPIOs direction using gpiod_get_direction(). Reviewed-by: Stephen Warren <swarren@wwwdotorg.org> -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon, Mar 28, 2016 at 4:58 PM, Stefan Wahren <stefan.wahren@i2se.com> wrote: > Implement gpio_chip's get_direction() callback, that lets other > drivers get particular GPIOs direction using gpiod_get_direction(). > > Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Patch applied with the ACKs. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c index 08b1d93..dd8b174 100644 --- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c +++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c @@ -342,6 +342,18 @@ static int bcm2835_gpio_get(struct gpio_chip *chip, unsigned offset) return bcm2835_gpio_get_bit(pc, GPLEV0, offset); } +static int bcm2835_gpio_get_direction(struct gpio_chip *chip, unsigned int offset) +{ + struct bcm2835_pinctrl *pc = gpiochip_get_data(chip); + enum bcm2835_fsel fsel = bcm2835_pinctrl_fsel_get(pc, offset); + + /* Alternative function doesn't clearly provide a direction */ + if (fsel > BCM2835_FSEL_GPIO_OUT) + return -EINVAL; + + return (fsel == BCM2835_FSEL_GPIO_IN); +} + static void bcm2835_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { struct bcm2835_pinctrl *pc = gpiochip_get_data(chip); @@ -370,6 +382,7 @@ static struct gpio_chip bcm2835_gpio_chip = { .free = gpiochip_generic_free, .direction_input = bcm2835_gpio_direction_input, .direction_output = bcm2835_gpio_direction_output, + .get_direction = bcm2835_gpio_get_direction, .get = bcm2835_gpio_get, .set = bcm2835_gpio_set, .to_irq = bcm2835_gpio_to_irq,
Implement gpio_chip's get_direction() callback, that lets other drivers get particular GPIOs direction using gpiod_get_direction(). Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> --- drivers/pinctrl/bcm/pinctrl-bcm2835.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)