diff options
| author |   Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> | 2019-09-11 10:41:25 +0530 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2019-09-12 10:25:38 +0100 |
| commit | 0351827168d336456141e8997c3732d78996385f (patch) | |
| tree | 55dc9c3f9cae6ebb413ae1b289b3d3a82f04aa68 /drivers/pinctrl | |
| parent | pinctrl: iproc-gpio: Handle interrupts for multiple instances (diff) | |
| download | linux-dev-0351827168d336456141e8997c3732d78996385f.tar.xz linux-dev-0351827168d336456141e8997c3732d78996385f.zip | |
pinctrl: iproc: Add 'get_direction' support
Add 'get_direction' support to the iProc GPIO driver.
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Link: https://lore.kernel.org/r/1568178685-30738-1-git-send-email-rayagonda.kokatanur@broadcom.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/bcm/pinctrl-iproc-gpio.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c index 28d120176861..6f7d3a2f2e97 100644 --- a/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c +++ b/drivers/pinctrl/bcm/pinctrl-iproc-gpio.c @@ -359,6 +359,15 @@ static int iproc_gpio_direction_output(struct gpio_chip *gc, unsigned gpio, return 0; } +static int iproc_gpio_get_direction(struct gpio_chip *gc, unsigned int gpio) +{ + struct iproc_gpio *chip = gpiochip_get_data(gc); + unsigned int offset = IPROC_GPIO_REG(gpio, IPROC_GPIO_OUT_EN_OFFSET); + unsigned int shift = IPROC_GPIO_SHIFT(gpio); + + return !(readl(chip->base + offset) & BIT(shift)); +} + static void iproc_gpio_set(struct gpio_chip *gc, unsigned gpio, int val) { struct iproc_gpio *chip = gpiochip_get_data(gc); @@ -835,6 +844,7 @@ static int iproc_gpio_probe(struct platform_device *pdev) gc->free = iproc_gpio_free; gc->direction_input = iproc_gpio_direction_input; gc->direction_output = iproc_gpio_direction_output; + gc->get_direction = iproc_gpio_get_direction; gc->set = iproc_gpio_set; gc->get = iproc_gpio_get; |