diff options
| author | Kevin Hilman <khilman@deeprootsystems.com> | 2009-01-27 11:15:34 -0800 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2010-05-12 09:39:16 -0700 |
| commit | 8865b9b6d5e1601453ea20c37eb981c6ccc3f4e9 (patch) | |
| tree | 88c8f10530aee0eea7c7f6be80cccf727e26bb11 /arch/arm/plat-omap/gpio.c | |
| parent | 43ffcd9a042858a9e9f9fe014bb073e55db34c67 (diff) | |
OMAP3: GPIO: disable GPIO debounce clocks on idle
Ensure GPIO debounce clocks are disabled when idle. Otherwise,
clocks will prevent PER powerdomain from entering retention.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/plat-omap/gpio.c')
| -rw-r--r-- | arch/arm/plat-omap/gpio.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c index 1c81340ce65c..c6e1de527116 100644 --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -196,6 +196,7 @@ struct gpio_bank { struct gpio_chip chip; struct clk *dbck; u32 mod_usage; + u32 dbck_enable_mask; }; #define METHOD_MPUIO 0 @@ -647,6 +648,7 @@ void omap_set_gpio_debounce(int gpio, int enable) goto done; if (cpu_is_omap34xx() || cpu_is_omap44xx()) { + bank->dbck_enable_mask = val; if (enable) clk_enable(bank->dbck); else @@ -2054,6 +2056,9 @@ void omap2_gpio_prepare_for_idle(int power_state) struct gpio_bank *bank = &gpio_bank[i]; u32 l1, l2; + if (bank->dbck_enable_mask) + clk_disable(bank->dbck); + if (power_state > PWRDM_POWER_OFF) continue; @@ -2118,6 +2123,9 @@ void omap2_gpio_resume_after_idle(void) struct gpio_bank *bank = &gpio_bank[i]; u32 l, gen, gen0, gen1; + if (bank->dbck_enable_mask) + clk_enable(bank->dbck); + if (!workaround_enabled) continue; |