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| author | Olof Johansson <olof@lixom.net> | 2014-01-02 23:45:27 +0400 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2014-01-02 23:45:27 +0400 |
| commit | a7dedb4fead89f88255862a9bc46f4c7ec094c2e (patch) | |
| tree | d07b09522364b895dc91ccd2d057668d2fa692c5 /drivers/gpio/gpio-mpc8xxx.c | |
| parent | 9dc9b8e51f95fce0cc3d50ef80402203d2dcd68a (diff) | |
| parent | 6075a8b2b6c32ddcb99b85189ae41ab2903e560f (diff) | |
| download | linux-a7dedb4fead89f88255862a9bc46f4c7ec094c2e.tar.xz | |
Merge tag 'davinci-for-v3.14/gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers
From Sekhar Nori:
DaVinci GPIO driver updates
---------------------------
This pull request contains updates to DaVinci GPIO driver and the
resultant platform code changes. The updates include DT-conversion and
changes to make the driver cross-platform ready.
* tag 'davinci-for-v3.14/gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
gpio: davinci: don't create irq_domain in case of unbanked irqs
gpio: davinci: use chained_irq_enter/chained_irq_exit API
gpio: davinci: add OF support
gpio: davinci: remove unused variable intc_irq_num
gpio: davinci: convert to use irqdomain support.
gpio: introduce GPIO_DAVINCI kconfig option
gpio: davinci: get rid of DAVINCI_N_GPIO
gpio: davinci: use {readl|writel}_relaxed() instead of __raw_*
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/gpio/gpio-mpc8xxx.c')
| -rw-r--r-- | drivers/gpio/gpio-mpc8xxx.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index 914e859e3eda..d7d6d72eba33 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -70,10 +70,14 @@ static int mpc8572_gpio_get(struct gpio_chip *gc, unsigned int gpio) u32 val; struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc); struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm); + u32 out_mask, out_shadow; - val = in_be32(mm->regs + GPIO_DAT) & ~in_be32(mm->regs + GPIO_DIR); + out_mask = in_be32(mm->regs + GPIO_DIR); - return (val | mpc8xxx_gc->data) & mpc8xxx_gpio2mask(gpio); + val = in_be32(mm->regs + GPIO_DAT) & ~out_mask; + out_shadow = mpc8xxx_gc->data & out_mask; + + return (val | out_shadow) & mpc8xxx_gpio2mask(gpio); } static int mpc8xxx_gpio_get(struct gpio_chip *gc, unsigned int gpio) |