diff options
| author |   Chris Packham <chris.packham@alliedtelesis.co.nz> | 2019-11-04 13:18:19 +1300 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2019-11-04 16:20:38 +0100 |
| commit | 574dce894bbe97bffb9bffb14973ed3d44e446fc (patch) | |
| tree | 05b87896815545e0b50e45273db5299f88191e50 | |
| parent | pinctrl: bcm: nsp: use gpiolib infrastructure for interrupts (diff) | |
| download | linux-dev-574dce894bbe97bffb9bffb14973ed3d44e446fc.tar.xz linux-dev-574dce894bbe97bffb9bffb14973ed3d44e446fc.zip | |
pinctrl: bcm: nsp: implement get_direction
The get_direction api is strongly recommended to be implemented. In fact
if it is not implemented gpio-hogs will not get the correct direction.
Add an implementation of get_direction for the nsp-gpio driver.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20191104001819.2300-3-chris.packham@alliedtelesis.co.nz
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/pinctrl/bcm/pinctrl-nsp-gpio.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c b/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c index 45ae29b22548..bed0124388c0 100644 --- a/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c +++ b/drivers/pinctrl/bcm/pinctrl-nsp-gpio.c @@ -297,6 +297,19 @@ static int nsp_gpio_direction_output(struct gpio_chip *gc, unsigned gpio, return 0; } +static int nsp_gpio_get_direction(struct gpio_chip *gc, unsigned gpio) +{ + struct nsp_gpio *chip = gpiochip_get_data(gc); + unsigned long flags; + int val; + + raw_spin_lock_irqsave(&chip->lock, flags); + val = nsp_get_bit(chip, REG, NSP_GPIO_OUT_EN, gpio); + raw_spin_unlock_irqrestore(&chip->lock, flags); + + return !val; +} + static void nsp_gpio_set(struct gpio_chip *gc, unsigned gpio, int val) { struct nsp_gpio *chip = gpiochip_get_data(gc); @@ -641,6 +654,7 @@ static int nsp_gpio_probe(struct platform_device *pdev) gc->free = gpiochip_generic_free; gc->direction_input = nsp_gpio_direction_input; gc->direction_output = nsp_gpio_direction_output; + gc->get_direction = nsp_gpio_get_direction; gc->set = nsp_gpio_set; gc->get = nsp_gpio_get; |