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Commit 8af584b8 authored by Richard Genoud's avatar Richard Genoud Committed by Linus Walleij
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pinctrl: at91: implement get_direction 



This is needed for gpiod_get_direction().
Otherwise, it returns -EINVAL.

Signed-off-by: default avatarRichard Genoud <richard.genoud@gmail.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 0c002ef8

drivers/pinctrl/pinctrl-at91.c

+12 −0
Original line number Diff line number Diff line
@@ -1137,6 +1137,17 @@ static void at91_gpio_free(struct gpio_chip *chip, unsigned offset) 
	pinctrl_free_gpio(gpio);

}



static int at91_gpio_get_direction(struct gpio_chip *chip, unsigned offset)

{

	struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);

	void __iomem *pio = at91_gpio->regbase;

	unsigned mask = 1 << offset;

	u32 osr;



	osr = readl_relaxed(pio + PIO_OSR);

	return !(osr & mask);

}



static int at91_gpio_direction_input(struct gpio_chip *chip, unsigned offset)

{

	struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
@@ -1570,6 +1581,7 @@ static int at91_gpio_of_irq_setup(struct device_node *node, 
static struct gpio_chip at91_gpio_template = {

	.request		= at91_gpio_request,

	.free			= at91_gpio_free,

	.get_direction		= at91_gpio_get_direction,

	.direction_input	= at91_gpio_direction_input,

	.get			= at91_gpio_get,

	.direction_output	= at91_gpio_direction_output,