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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>
This commit is contained in:
Chris Packham 2019-11-04 13:18:19 +13:00 committed by Linus Walleij
parent 8298d18a49
commit 574dce894b
1 changed files with 14 additions and 0 deletions
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14
drivers/pinctrl/bcm/pinctrl-nsp-gpio.c
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@ -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;