ARM OMAP3: RX-51 board - add initialization of gpio keys

Initialize some of the RX-51 input GPIO lines as gpio keys. Enable gpio
keys as a module in rx51_defconfig.

Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 82 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index cf4583a5d284..fb5988c1a884 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -20,6 +20,7 @@
 #include <linux/delay.h>
 #include <linux/regulator/machine.h>
 #include <linux/gpio.h>
+#include <linux/gpio_keys.h>
 #include <linux/mmc/host.h>
 
 #include <plat/mcspi.h>
@@ -36,6 +37,86 @@
 #define SYSTEM_REV_B_USES_VAUX3 0x1699
 #define SYSTEM_REV_S_USES_VAUX3 0x8
 
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+
+#define RX51_GPIO_CAMERA_LENS_COVER     110
+#define RX51_GPIO_CAMERA_FOCUS          68
+#define RX51_GPIO_CAMERA_CAPTURE        69
+#define RX51_GPIO_KEYPAD_SLIDE          71
+#define RX51_GPIO_LOCK_BUTTON           113
+#define RX51_GPIO_PROXIMITY             89
+
+#define RX51_GPIO_DEBOUNCE_TIMEOUT      10
+
+static struct gpio_keys_button rx51_gpio_keys[] = {
+        {
+                .desc                   = "Camera Lens Cover",
+                .type                   = EV_SW,
+                .code                   = SW_CAMERA_LENS_COVER,
+                .gpio                   = RX51_GPIO_CAMERA_LENS_COVER,
+                .active_low             = 1,
+                .debounce_interval      = RX51_GPIO_DEBOUNCE_TIMEOUT,
+        }, {
+                .desc                   = "Camera Focus",
+                .type                   = EV_KEY,
+                .code                   = KEY_CAMERA_FOCUS,
+                .gpio                   = RX51_GPIO_CAMERA_FOCUS,
+                .active_low             = 1,
+                .debounce_interval      = RX51_GPIO_DEBOUNCE_TIMEOUT,
+        }, {
+                .desc                   = "Camera Capture",
+                .type                   = EV_KEY,
+                .code                   = KEY_CAMERA,
+                .gpio                   = RX51_GPIO_CAMERA_CAPTURE,
+                .active_low             = 1,
+                .debounce_interval      = RX51_GPIO_DEBOUNCE_TIMEOUT,
+        }, {
+                .desc                   = "Lock Button",
+                .type                   = EV_KEY,
+                .code                   = KEY_SCREENLOCK,
+                .gpio                   = RX51_GPIO_LOCK_BUTTON,
+                .active_low             = 1,
+                .debounce_interval      = RX51_GPIO_DEBOUNCE_TIMEOUT,
+        }, {
+                .desc                   = "Keypad Slide",
+                .type                   = EV_SW,
+                .code                   = SW_KEYPAD_SLIDE,
+                .gpio                   = RX51_GPIO_KEYPAD_SLIDE,
+                .active_low             = 1,
+                .debounce_interval      = RX51_GPIO_DEBOUNCE_TIMEOUT,
+        }, {
+                .desc                   = "Proximity Sensor",
+                .type                   = EV_SW,
+                .code                   = SW_FRONT_PROXIMITY,
+                .gpio                   = RX51_GPIO_PROXIMITY,
+                .active_low             = 0,
+                .debounce_interval      = RX51_GPIO_DEBOUNCE_TIMEOUT,
+        }
+};
+
+static struct gpio_keys_platform_data rx51_gpio_keys_data = {
+        .buttons        = rx51_gpio_keys,
+        .nbuttons       = ARRAY_SIZE(rx51_gpio_keys),
+};
+
+static struct platform_device rx51_gpio_keys_device = {
+        .name   = "gpio-keys",
+        .id     = -1,
+        .dev    = {
+                .platform_data  = &rx51_gpio_keys_data,
+        },
+};
+
+static void __init rx51_add_gpio_keys(void)
+{
+        platform_device_register(&rx51_gpio_keys_device);
+}
+#else
+static void __init rx51_add_gpio_keys(void)
+{
+}
+#endif /* CONFIG_KEYBOARD_GPIO || CONFIG_KEYBOARD_GPIO_MODULE */
+
 static int board_keymap[] = {
         KEY(0, 0, KEY_Q),
         KEY(0, 1, KEY_O),
@@ -541,5 +622,6 @@ void __init rx51_peripherals_init(void)
         rx51_i2c_init();
         board_onenand_init();
         board_smc91x_init();
+        rx51_add_gpio_keys();
 }