diff options
| author | Nishanth Menon <nm@ti.com> | 2011-09-09 17:38:58 +0400 |
|---|---|---|
| committer | Tarun Kanti DebBarma <tarun.kanti@ti.com> | 2012-02-06 15:24:37 +0400 |
| commit | ae547354a8ed59f19b57f7e1de9c7816edfc3537 (patch) | |
| tree | a8069213450d93f22611804628251d7c785a6266 /drivers/gpio/gpio-omap.c | |
| parent | 41d87cbd660fd5793a6c70f9c93d9dcc8964179d (diff) | |
| download | linux-ae547354a8ed59f19b57f7e1de9c7816edfc3537.tar.xz | |
gpio/omap: save and restore debounce registers
GPIO debounce registers need to be saved and restored for proper functioning
of driver.
Signed-off-by: Nishanth Menon <nm@ti.com>
tarun.kanti@ti.com: Debounce context save is moved to _set_gpio_debounce()
as part of dynamic context save to remove overhead.
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'drivers/gpio/gpio-omap.c')
| -rw-r--r-- | drivers/gpio/gpio-omap.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 62c49e0f7f29..f6b2c51b2935 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -44,6 +44,8 @@ struct gpio_regs { u32 risingdetect; u32 fallingdetect; u32 dataout; + u32 debounce; + u32 debounce_en; }; struct gpio_bank { @@ -229,6 +231,10 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio, * that point. Therefore we have to enable dbck here. */ _gpio_dbck_enable(bank); + if (bank->dbck_enable_mask) { + bank->context.debounce = debounce; + bank->context.debounce_en = val; + } } static inline void set_gpio_trigger(struct gpio_bank *bank, int gpio, @@ -1363,6 +1369,12 @@ static void omap_gpio_restore_context(struct gpio_bank *bank) __raw_writel(bank->context.fallingdetect, bank->base + bank->regs->fallingdetect); __raw_writel(bank->context.dataout, bank->base + bank->regs->dataout); + if (bank->dbck_enable_mask) { + __raw_writel(bank->context.debounce, bank->base + + bank->regs->debounce); + __raw_writel(bank->context.debounce_en, + bank->base + bank->regs->debounce_en); + } } #endif /* CONFIG_PM_RUNTIME */ #else |