Input: omap4-keypad - wake-up on events & long presses

Program keyboard controller to generate a wake-up request on events and
on long key presses. It will not generate wake-up requests on timeouts
since driver code does not handle them.

This allows keyboard to wake-up OMAP from suspend.
Signed-off-by: Mike Turquette <mturquette@ti.com>
Signed-off-by: Abraham Arce <x0066660@ti.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/keyboard/omap4-keypad.c

@@ -54,6 +54,8 @@
 #define OMAP4_DEF_IRQENABLE_EVENTEN	(1 << 0)
 #define OMAP4_DEF_IRQENABLE_LONGKEY	(1 << 1)
 #define OMAP4_DEF_IRQENABLE_TIMEOUTEN	(1 << 2)
+#define OMAP4_DEF_WUP_EVENT_ENA		(1 << 0)
+#define OMAP4_DEF_WUP_LONG_KEY_ENA	(1 << 1)
 #define OMAP4_DEF_CTRL_NOSOFTMODE	(1 << 1)
 #define OMAP4_DEF_CTRLPTVVALUE		(1 << 2)
 #define OMAP4_DEF_CTRLPTV		(1 << 1)
@@ -88,6 +90,8 @@ static void __devinit omap4_keypad_config(struct omap4_keypad *keypad_data)
 			keypad_data->base + OMAP4_KBD_IRQSTATUS);
 	__raw_writel(OMAP4_DEF_IRQENABLE_EVENTEN | OMAP4_DEF_IRQENABLE_LONGKEY,
 			keypad_data->base + OMAP4_KBD_IRQENABLE);
+	__raw_writel(OMAP4_DEF_WUP_EVENT_ENA | OMAP4_DEF_WUP_LONG_KEY_ENA,
+			keypad_data->base + OMAP4_KBD_WAKEUPENABLE);
 }
 
 /* Interrupt handler */