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authorMark F. Brown <mark.brown314@gmail.com>2010-09-04 02:28:09 +0400
committerEric Miao <eric.y.miao@gmail.com>2010-10-09 13:07:19 +0400
commit3587c258078479824342f33dc513ca7c66d729bc (patch)
tree2df8b4f65663cddedbba2763a048ce3b0ac6ba43 /arch/arm/plat-pxa
parent2ce4389068129fb4a8756b5ba126da1260f5dbef (diff)
downloadlinux-3587c258078479824342f33dc513ca7c66d729bc.tar.xz
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>
Diffstat (limited to 'arch/arm/plat-pxa')
-rw-r--r--arch/arm/plat-pxa/include/plat/pxa27x_keypad.h10
1 files changed, 10 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 7b4eadc6df3a..abcc36eb1242 100644
--- a/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h
+++ b/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h
@@ -25,6 +25,13 @@
*
* 4. matrix key and direct key will use the same debounce_interval by
* default, which should be sufficient in most cases
+ *
+ * pxa168 keypad platform specific parameter
+ *
+ * NOTE:
+ * clear_wakeup_event callback is a workaround required to clear the
+ * keypad interrupt. The keypad wake must be cleared in addition to
+ * reading the MI/DI bits in the KPC register.
*/
struct pxa27x_keypad_platform_data {
@@ -52,6 +59,9 @@ struct pxa27x_keypad_platform_data {
/* key debounce interval */
unsigned int debounce_interval;
+
+ /* clear wakeup event requirement for pxa168 */
+ void (*clear_wakeup_event)(void);
};
extern void pxa_set_keypad_info(struct pxa27x_keypad_platform_data *info);