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Commit 64b997c5 authored by Viresh Kumar's avatar Viresh Kumar Committed by Russell King
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ARM: 6060/1: PL061 GPIO: Setting gpio val after changing direction to OUT. 



pl061_direction_output doesn't set value of gpio to value passed to it.
This patch sets value of GPIO pin to requested value after changing direction
to OUT.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@st.com>
Acked-by: default avatarBaruch Siach <baruch@tkos.co.il>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 9a99d555

drivers/gpio/pl061.c

+6 −0
Original line number Original line Diff line number Diff line
@@ -91,6 +91,12 @@ static int pl061_direction_output(struct gpio_chip *gc, unsigned offset, 
	gpiodir = readb(chip->base + GPIODIR);

	gpiodir = readb(chip->base + GPIODIR);

	gpiodir |= 1 << offset;

	gpiodir |= 1 << offset;

	writeb(gpiodir, chip->base + GPIODIR);

	writeb(gpiodir, chip->base + GPIODIR);



	/*

	 * gpio value is set again, because pl061 doesn't allow to set value of

	 * a gpio pin before configuring it in OUT mode.

	 */

	writeb(!!value << offset, chip->base + (1 << (offset + 2)));

	spin_unlock_irqrestore(&chip->lock, flags);

	spin_unlock_irqrestore(&chip->lock, flags);





	return 0;

	return 0;