From 8865b9b6d5e1601453ea20c37eb981c6ccc3f4e9 Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Tue, 27 Jan 2009 11:15:34 -0800 Subject: 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 --- arch/arm/plat-omap/gpio.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/arm') 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; -- cgit v1.2.3