[ARM] Acer n30: GPIO buttons support

Add support for the GPIO buttons on the Acer N30.

Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/mach-n30.c b/arch/arm/mach-s3c2410/mach-n30.c
index 8edc0c0eb043..631f3a9e7a60 100644
--- a/arch/arm/mach-s3c2410/mach-n30.c
+++ b/arch/arm/mach-s3c2410/mach-n30.c
@@ -17,7 +17,9 @@
 #include <linux/types.h>
 
 #include <linux/delay.h>
+#include <linux/gpio_keys.h>
 #include <linux/init.h>
+#include <linux/input.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/serial_core.h>
@@ -98,6 +100,70 @@ static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
         .vbus_pin_inverted      = 0,
 };
 
+static struct gpio_keys_button n30_buttons[] = {
+        {
+                .gpio           = S3C2410_GPF0,
+                .code           = KEY_POWER,
+                .desc           = "Power",
+                .active_low     = 0,
+        },
+        {
+                .gpio           = S3C2410_GPG9,
+                .code           = KEY_UP,
+                .desc           = "Thumbwheel Up",
+                .active_low     = 0,
+        },
+        {
+                .gpio           = S3C2410_GPG8,
+                .code           = KEY_DOWN,
+                .desc           = "Thumbwheel Down",
+                .active_low     = 0,
+        },
+        {
+                .gpio           = S3C2410_GPG7,
+                .code           = KEY_ENTER,
+                .desc           = "Thumbwheel Press",
+                .active_low     = 0,
+        },
+        {
+                .gpio           = S3C2410_GPF7,
+                .code           = KEY_HOMEPAGE,
+                .desc           = "Home",
+                .active_low     = 0,
+        },
+        {
+                .gpio           = S3C2410_GPF6,
+                .code           = KEY_CALENDAR,
+                .desc           = "Calendar",
+                .active_low     = 0,
+        },
+        {
+                .gpio           = S3C2410_GPF5,
+                .code           = KEY_ADDRESSBOOK,
+                .desc           = "Contacts",
+                .active_low     = 0,
+        },
+        {
+                .gpio           = S3C2410_GPF4,
+                .code           = KEY_MAIL,
+                .desc           = "Mail",
+                .active_low     = 0,
+        },
+};
+
+static struct gpio_keys_platform_data n30_button_data = {
+        .buttons        = n30_buttons,
+        .nbuttons       = ARRAY_SIZE(n30_buttons),
+};
+
+static struct platform_device n30_button_device = {
+        .name           = "gpio-keys",
+        .id             = -1,
+        .dev            = {
+                .platform_data  = &n30_button_data,
+        }
+};
+
 static struct platform_device *n30_devices[] __initdata = {
         &s3c_device_lcd,
         &s3c_device_wdt,
@@ -105,6 +171,7 @@ static struct platform_device *n30_devices[] __initdata = {
         &s3c_device_iis,
         &s3c_device_usb,
         &s3c_device_usbgadget,
+        &n30_button_device,
 };
 
 static struct s3c2410_platform_i2c n30_i2ccfg = {