ARM: pxa27x_keypad: added wakeup event handler for keypad interrupts

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

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index 731bd88bb076..4b0ec35259a1 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);