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Commit 5cac9d65 authored by Darius Augulis's avatar Darius Augulis Committed by Sascha Hauer
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[ARM] MXC: Fix mxc_gpio_get(), which must read PSR register instead DR. 



The Data register holds the value we have written to a gpio. To
get the input value we must read the Pad Status Register MX3 (or Sample
Status register in MX1/2 terms)

Signed-off-by: default avatarDarius Augulis <augulis.darius@gmail.com>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent eadefeff

arch/arm/plat-mxc/gpio.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -188,7 +188,7 @@ static int mxc_gpio_get(struct gpio_chip *chip, unsigned offset) 
	struct mxc_gpio_port *port =

	struct mxc_gpio_port *port =

		container_of(chip, struct mxc_gpio_port, chip);

		container_of(chip, struct mxc_gpio_port, chip);





	return (__raw_readl(port->base + GPIO_DR) >> offset) & 1;

	return (__raw_readl(port->base + GPIO_PSR) >> offset) & 1;

}

}





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

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