[ARM] 5564/1: at91: add gpio button and leds support for at91sam9rlek

This adds input keyboard gpio support on at91sam9rlek board. It adds button 1
and 2 (left and right click).
It also adds gpio leds ds1, ds2 and ds3.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 79 insertions, 0 deletions

diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c
index 35e12a49d1a6..9120d5d3a6fc 100644
--- a/arch/arm/mach-at91/board-sam9rlek.c
+++ b/arch/arm/mach-at91/board-sam9rlek.c
@@ -15,6 +15,8 @@
 #include <linux/spi/spi.h>
 #include <linux/fb.h>
 #include <linux/clk.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
 
 #include <video/atmel_lcdc.h>
 
@@ -206,6 +208,79 @@ static struct atmel_lcdfb_info __initdata ek_lcdc_data;
 #endif
 
 
+/*
+ * LEDs
+ */
+static struct gpio_led ek_leds[] = {
+        {       /* "bottom" led, green, userled1 to be defined */
+                .name                   = "ds1",
+                .gpio                   = AT91_PIN_PD15,
+                .active_low             = 1,
+                .default_trigger        = "none",
+        },
+        {       /* "bottom" led, green, userled2 to be defined */
+                .name                   = "ds2",
+                .gpio                   = AT91_PIN_PD16,
+                .active_low             = 1,
+                .default_trigger        = "none",
+        },
+        {       /* "power" led, yellow */
+                .name                   = "ds3",
+                .gpio                   = AT91_PIN_PD14,
+                .default_trigger        = "heartbeat",
+        }
+};
+
+
+/*
+ * GPIO Buttons
+ */
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+static struct gpio_keys_button ek_buttons[] = {
+        {
+                .gpio           = AT91_PIN_PB0,
+                .code           = BTN_2,
+                .desc           = "Right Click",
+                .active_low     = 1,
+                .wakeup         = 1,
+        },
+        {
+                .gpio           = AT91_PIN_PB1,
+                .code           = BTN_1,
+                .desc           = "Left Click",
+                .active_low     = 1,
+                .wakeup         = 1,
+        }
+};
+
+static struct gpio_keys_platform_data ek_button_data = {
+        .buttons        = ek_buttons,
+        .nbuttons       = ARRAY_SIZE(ek_buttons),
+};
+
+static struct platform_device ek_button_device = {
+        .name           = "gpio-keys",
+        .id             = -1,
+        .num_resources  = 0,
+        .dev            = {
+                .platform_data  = &ek_button_data,
+        }
+};
+
+static void __init ek_add_device_buttons(void)
+{
+        at91_set_gpio_input(AT91_PIN_PB1, 1);   /* btn1 */
+        at91_set_deglitch(AT91_PIN_PB1, 1);
+        at91_set_gpio_input(AT91_PIN_PB0, 1);   /* btn2 */
+        at91_set_deglitch(AT91_PIN_PB0, 1);
+
+        platform_device_register(&ek_button_device);
+}
+#else
+static void __init ek_add_device_buttons(void) {}
+#endif
+
+
 static void __init ek_board_init(void)
 {
         /* Serial */
@@ -224,6 +299,10 @@ static void __init ek_board_init(void)
         at91_add_device_lcdc(&ek_lcdc_data);
         /* Touch Screen Controller */
         at91_add_device_tsadcc();
+        /* LEDs */
+        at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
+        /* Push Buttons */
+        ek_add_device_buttons();
 }
 
 MACHINE_START(AT91SAM9RLEK, "Atmel AT91SAM9RL-EK")