[PATCH v2 4/6] ARM: pxa27x_keypad: added wakeup event handler for keypad interrupts

Mark F. Brown
2010-09-03T21:49:20Z

mach-mmp needs to clear wake event in order to clear the keypad interrupt

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
---
arch/arm/plat-pxa/include/plat/pxa27x_keypad.h | 1 +
drivers/input/keyboard/pxa27x_keypad.c | 10 ++++++++++
2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h b/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h
index 7b4eadc..73dacda 100644
--- a/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h
+++ b/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h
@@ -52,6 +52,7 @@ struct pxa27x_keypad_platform_data {

/* key debounce interval */
unsigned int debounce_interval;
+ void (*clear_wakeup_event)(void);
};

extern void pxa_set_keypad_info(struct pxa27x_keypad_platform_data *info);
diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index 0610d10..b36d2be 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -330,11 +330,21 @@ static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad)
keypad->direct_key_state = new_state;
}

+static void clear_wakeup_event(struct pxa27x_keypad *keypad)
+{
+ struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
+
+ if (pdata->clear_wakeup_event)
+ (pdata->clear_wakeup_event)();
+}
+
static irqreturn_t pxa27x_keypad_irq_handler(int irq, void *dev_id)
{
struct pxa27x_keypad *keypad = dev_id;
unsigned long kpc = keypad_readl(KPC);

+ clear_wakeup_event(keypad);
+
if (kpc & KPC_DI)
pxa27x_keypad_scan_direct(keypad);

--
1.7.0.4