ARM: tegra: paz00: add support for wakeup gpio key

This adds support for a wakeup gpio which is connected to the
embedded controller. This will be used later on for wakeup from suspend.

Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c
index 55c55ba89f1e0c52ddbe838764c814f423ca4cb3..799e4201ecf30548d81b22f863c6af091ac5e1da 100644 (file)
--- a/arch/arm/mach-tegra/board-paz00.c
+++ b/arch/arm/mach-tegra/board-paz00.c
@@ -23,8 +23,10 @@
 #include <linux/serial_8250.h>
 #include <linux/clk.h>
 #include <linux/dma-mapping.h>
+#include <linux/gpio_keys.h>
 #include <linux/pda_power.h>
 #include <linux/io.h>
+#include <linux/input.h>
 #include <linux/i2c.h>
 #include <linux/gpio.h>
 #include <linux/rfkill-gpio.h>
@@ -114,12 +116,37 @@ static struct platform_device leds_gpio = {
         },
 };
 
+static struct gpio_keys_button paz00_gpio_keys_buttons[] = {
+       {
+               .code           = KEY_POWER,
+               .gpio           = TEGRA_GPIO_POWERKEY,
+               .active_low     = 1,
+               .desc           = "Power",
+               .type           = EV_KEY,
+               .wakeup         = 1,
+       },
+};
+
+static struct gpio_keys_platform_data paz00_gpio_keys = {
+       .buttons        = paz00_gpio_keys_buttons,
+       .nbuttons       = ARRAY_SIZE(paz00_gpio_keys_buttons),
+};
+
+static struct platform_device gpio_keys_device = {
+       .name   = "gpio-keys",
+       .id     = -1,
+       .dev    = {
+               .platform_data = &paz00_gpio_keys,
+       },
+};
+
 static struct platform_device *paz00_devices[] __initdata = {
        &debug_uart,
        &tegra_sdhci_device4,
        &tegra_sdhci_device1,
        &wifi_rfkill_device,
        &leds_gpio,
+       &gpio_keys_device,
 };
 
 static void paz00_i2c_init(void)

diff --git a/arch/arm/mach-tegra/board-paz00.h b/arch/arm/mach-tegra/board-paz00.h
index 8aff06eb58c38e3f0dfdf52d1a8aa02044637317..ffa83f580db6740289fe0ee00ef1a77a1cf8910b 100644 (file)
--- a/arch/arm/mach-tegra/board-paz00.h
+++ b/arch/arm/mach-tegra/board-paz00.h
@@ -32,6 +32,9 @@
 #define TEGRA_WIFI_RST                 TEGRA_GPIO_PD1
 #define TEGRA_WIFI_LED                 TEGRA_GPIO_PD0
 
+/* WakeUp */
+#define TEGRA_GPIO_POWERKEY    TEGRA_GPIO_PJ7
+
 void paz00_pinmux_init(void);
 
 #endif