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-rw-r--r--arch/arm/plat-omap/gpio.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index b55b4adffbe..7c70a6afcf6 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -1895,7 +1895,7 @@ void omap2_gpio_resume_after_retention(void)
return;
for (i = 0; i < gpio_bank_count; i++) {
struct gpio_bank *bank = &gpio_bank[i];
- u32 l;
+ u32 l, gen, gen0, gen1;
if (!(bank->enabled_non_wakeup_gpios))
continue;
@@ -1916,14 +1916,33 @@ void omap2_gpio_resume_after_retention(void)
#endif
l ^= bank->saved_datain;
l &= bank->non_wakeup_gpios;
- if (l) {
+
+ /*
+ * No need to generate IRQs for the rising edge for gpio IRQs
+ * configured with falling edge only; and vice versa.
+ */
+ gen0 = l & bank->saved_fallingdetect;
+ gen0 &= bank->saved_datain;
+
+ gen1 = l & bank->saved_risingdetect;
+ gen1 &= ~(bank->saved_datain);
+
+ /* FIXME: Consider GPIO IRQs with level detections properly! */
+ gen = l & (~(bank->saved_fallingdetect) &
+ ~(bank->saved_risingdetect));
+ /* Consider all GPIO IRQs needed to be updated */
+ gen |= gen0 | gen1;
+
+ if (gen) {
u32 old0, old1;
#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
defined(CONFIG_ARCH_OMAP4)
old0 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0);
old1 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1);
- __raw_writel(old0 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT0);
- __raw_writel(old1 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT1);
+ __raw_writel(old0 | gen, bank->base +
+ OMAP24XX_GPIO_LEVELDETECT0);
+ __raw_writel(old1 | gen, bank->base +
+ OMAP24XX_GPIO_LEVELDETECT1);
__raw_writel(old0, bank->base + OMAP24XX_GPIO_LEVELDETECT0);
__raw_writel(old1, bank->base + OMAP24XX_GPIO_LEVELDETECT1);
#endif