[ARM] 5262/2: [AT91] Support for GPIO-connected buttons on SAM9260-EK board
Add support or the GPIO-connected buttons on the Atmel AT91SAM9260-EK board.
Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-at91/board-sam9260ek.c b/arch/arm/mach-at91/board-sam9260ek.c
index e22433d..b49eb6e 100644
--- a/arch/arm/mach-at91/board-sam9260ek.c
+++ b/arch/arm/mach-at91/board-sam9260ek.c
@@ -28,6 +28,8 @@
#include <linux/spi/at73c213.h>
#include <linux/clk.h>
#include <linux/i2c/at24.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
@@ -240,6 +242,56 @@
/* more devices can be added using expansion connectors */
};
+
+/*
+ * GPIO Buttons
+ */
+#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
+static struct gpio_keys_button ek_buttons[] = {
+ {
+ .gpio = AT91_PIN_PA30,
+ .code = BTN_3,
+ .desc = "Button 3",
+ .active_low = 1,
+ .wakeup = 1,
+ },
+ {
+ .gpio = AT91_PIN_PA31,
+ .code = BTN_4,
+ .desc = "Button 4",
+ .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_PA30, 1); /* btn3 */
+ at91_set_deglitch(AT91_PIN_PA30, 1);
+ at91_set_gpio_input(AT91_PIN_PA31, 1); /* btn4 */
+ at91_set_deglitch(AT91_PIN_PA31, 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 */
@@ -263,6 +315,8 @@
at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX);
/* LEDs */
at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
+ /* Push Buttons */
+ ek_add_device_buttons();
}
MACHINE_START(AT91SAM9260EK, "Atmel AT91SAM9260-EK")