Commit 64b997c5 authored by viresh kumar's avatar viresh kumar Committed by Russell King

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
......@@ -91,6 +91,12 @@ static int pl061_direction_output(struct gpio_chip *gc, unsigned offset,
gpiodir = readb(chip->base + GPIODIR);
gpiodir |= 1 << offset;
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);
return 0;
......
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