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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>
hifive-unleashed-5.1
Kevin Hilman 2009-01-27 11:15:34 -08:00
parent 43ffcd9a04
commit 8865b9b6d5
1 changed files with 8 additions and 0 deletions
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8
arch/arm/plat-omap/gpio.c
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@ -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;