[4/6] OMAP3: GPIO: disable GPIO debounce clocks on idle

Commit Message

Kevin Hilman May 11, 2010, 11:30 p.m. UTC

None

Patch

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 1c81340..c6e1de5 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;