ARM: EXYNOS4: Add keypad support for ORIGEN

This patch adds keypad support for ORIGEN board as GPIO keys.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/arch/arm/mach-exynos4/mach-origen.c b/arch/arm/mach-exynos4/mach-origen.c
index cd5195f..3d67140 100644 (file)
--- a/arch/arm/mach-exynos4/mach-origen.c
+++ b/arch/arm/mach-exynos4/mach-origen.c
@@ -15,6 +15,7 @@
 #include <linux/io.h>
 #include <linux/input.h>
 #include <linux/pwm_backlight.h>
+#include <linux/gpio_keys.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
@@ -97,6 +98,62 @@ static void __init origen_ehci_init(void)
        s5p_ehci_set_platdata(pdata);
 }
 
+static struct gpio_keys_button origen_gpio_keys_table[] = {
+       {
+               .code                   = KEY_MENU,
+               .gpio                   = EXYNOS4_GPX1(5),
+               .desc                   = "gpio-keys: KEY_MENU",
+               .type                   = EV_KEY,
+               .active_low             = 1,
+               .wakeup                 = 1,
+               .debounce_interval      = 1,
+       }, {
+               .code                   = KEY_HOME,
+               .gpio                   = EXYNOS4_GPX1(6),
+               .desc                   = "gpio-keys: KEY_HOME",
+               .type                   = EV_KEY,
+               .active_low             = 1,
+               .wakeup                 = 1,
+               .debounce_interval      = 1,
+       }, {
+               .code                   = KEY_BACK,
+               .gpio                   = EXYNOS4_GPX1(7),
+               .desc                   = "gpio-keys: KEY_BACK",
+               .type                   = EV_KEY,
+               .active_low             = 1,
+               .wakeup                 = 1,
+               .debounce_interval      = 1,
+       }, {
+               .code                   = KEY_UP,
+               .gpio                   = EXYNOS4_GPX2(0),
+               .desc                   = "gpio-keys: KEY_UP",
+               .type                   = EV_KEY,
+               .active_low             = 1,
+               .wakeup                 = 1,
+               .debounce_interval      = 1,
+       }, {
+               .code                   = KEY_DOWN,
+               .gpio                   = EXYNOS4_GPX2(1),
+               .desc                   = "gpio-keys: KEY_DOWN",
+               .type                   = EV_KEY,
+               .active_low             = 1,
+               .wakeup                 = 1,
+               .debounce_interval      = 1,
+       },
+};
+
+static struct gpio_keys_platform_data origen_gpio_keys_data = {
+       .buttons        = origen_gpio_keys_table,
+       .nbuttons       = ARRAY_SIZE(origen_gpio_keys_table),
+};
+
+static struct platform_device origen_device_gpiokeys = {
+       .name           = "gpio-keys",
+       .dev            = {
+               .platform_data  = &origen_gpio_keys_data,
+       },
+};
+
 static struct platform_device *origen_devices[] __initdata = {
        &s3c_device_hsmmc2,
        &s3c_device_hsmmc0,
@@ -107,6 +164,7 @@ static struct platform_device *origen_devices[] __initdata = {
        &s5p_device_fimc1,
        &s5p_device_fimc2,
        &s5p_device_fimc3,
+       &origen_device_gpiokeys,
 };
 
 /* LCD Backlight data */