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gpio: generic: add request function pointer 

gpiolib will require all gpio drivers to expicitly set the request
function pointer in the future. To encourage gpio driver developers
to adhere to this standard gpio-generic.c now sets this function
pointer.

Signed-off-by: Anthony Fee <anthony.fee@emutex.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
hifive-unleashed-5.1
Anthony Fee 2014-05-19 18:49:14 +01:00 committed by Linus Walleij
parent 3ff35cbcfa
commit 7b42e3dbda
1 changed files with 9 additions and 0 deletions
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9
drivers/gpio/gpio-generic.c
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@ -388,6 +388,14 @@ static int bgpio_setup_direction(struct bgpio_chip *bgc,
return 0;
}
static int bgpio_request(struct gpio_chip *chip, unsigned gpio_pin)
{
if (gpio_pin < chip->ngpio)
return 0;
return -EINVAL;
}
int bgpio_remove(struct bgpio_chip *bgc)
{
return gpiochip_remove(&bgc->gc);
@ -413,6 +421,7 @@ int bgpio_init(struct bgpio_chip *bgc, struct device *dev,
bgc->gc.label = dev_name(dev);
bgc->gc.base = -1;
bgc->gc.ngpio = bgc->bits;
bgc->gc.request = bgpio_request;
ret = bgpio_setup_io(bgc, dat, set, clr);
if (ret)