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gpio: generic: add request function pointer

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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>
This commit is contained in:
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)