ARM: pxa: hx4700: Enable ASIC3 GPIO as a wakeup source

This patch enables the ASIC3 GPIO (12) as a wakeup source:
1. Set the WAKEUP_ON_EDGE_RISE MFP config bits for GPIO12 in
hx4700_pin_config[].
2. Call gpio_set_wake() for GPIO12.

With GPIO12 thus enabled, the mfd/asic3 driver can enable its own GPIOs
as wakeup sources by implementing a irq_set_wake() handler.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c
index fe8fb7adcac8..2fe0fa0cb383 100644
--- a/arch/arm/mach-pxa/hx4700.c
+++ b/arch/arm/mach-pxa/hx4700.c
@@ -125,7 +125,7 @@ static unsigned long hx4700_pin_config[] __initdata = {
         GPIO88_GPIO,
 
         /* HX4700 specific input GPIOs */
-        GPIO12_GPIO,    /* ASIC3_IRQ */
+        GPIO12_GPIO | WAKEUP_ON_EDGE_RISE,      /* ASIC3_IRQ */
         GPIO13_GPIO,    /* W3220_IRQ */
         GPIO14_GPIO,    /* nWLAN_IRQ */
 
@@ -860,6 +860,7 @@ static void __init hx4700_init(void)
         int ret;
 
         pxa2xx_mfp_config(ARRAY_AND_SIZE(hx4700_pin_config));
+        gpio_set_wake(GPIO12_HX4700_ASIC3_IRQ, 1);
         ret = gpio_request_array(ARRAY_AND_SIZE(global_gpios));
         if (ret)
                 pr_err ("hx4700: Failed to request GPIOs.\n");