[ARM] pxa: use gpio_keys.c to support mainstone's wakeup switch of GPIO1

NOTE: currently don't know if the key code of KEY_SUSPEND is fit for
such usage.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 26 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 7fa5a3779e0d..bde60887dd12 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -24,6 +24,8 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/backlight.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -500,11 +502,35 @@ static struct pxaficp_platform_data mainstone_ficp_platform_data = {
         .transceiver_mode = mainstone_irda_transceiver_mode,
 };
 
+static struct gpio_keys_button gpio_keys_button[] = {
+        [0] = {
+                .desc   = "wakeup",
+                .code   = KEY_SUSPEND,
+                .type   = EV_KEY,
+                .gpio   = 1,
+                .wakeup = 1,
+        },
+};
+
+static struct gpio_keys_platform_data mainstone_gpio_keys = {
+        .buttons        = gpio_keys_button,
+        .nbuttons       = 1,
+};
+
+static struct platform_device mst_gpio_keys_device = {
+        .name           = "gpio-keys",
+        .id             = -1,
+        .dev            = {
+                .platform_data  = &mainstone_gpio_keys,
+        },
+};
+
 static struct platform_device *platform_devices[] __initdata = {
         &smc91x_device,
         &mst_audio_device,
         &mst_flash_device[0],
         &mst_flash_device[1],
+        &mst_gpio_keys_device,
 };
 
 static int mainstone_ohci_init(struct device *dev)