[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>
diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c
index 35e12a4..9120d5d 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 @@
#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 @@
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")