Armadillo500 Add support for onboard GPIO Buttons.
There are two low active Buttons on boards.
This patch connect those to the Input Subsystem over gpio-keys driver.
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx3/armadillo5x0.c b/arch/arm/mach-mx3/armadillo5x0.c
index 776c0ee..309fa7a 100644
--- a/arch/arm/mach-mx3/armadillo5x0.c
+++ b/arch/arm/mach-mx3/armadillo5x0.c
@@ -33,6 +33,8 @@
#include <linux/irq.h>
#include <linux/mtd/physmap.h>
#include <linux/io.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
@@ -98,6 +100,36 @@
MX31_PIN_DRDY0__DRDY0,
IOMUX_MODE(MX31_PIN_LCS1, IOMUX_CONFIG_GPIO), /*ADV7125_PSAVE*/
};
+/* GPIO BUTTONS */
+static struct gpio_keys_button armadillo5x0_buttons[] = {
+ {
+ .code = KEY_ENTER, /*28*/
+ .gpio = IOMUX_TO_GPIO(MX31_PIN_SCLK0),
+ .active_low = 1,
+ .desc = "menu",
+ .wakeup = 1,
+ }, {
+ .code = KEY_BACK, /*158*/
+ .gpio = IOMUX_TO_GPIO(MX31_PIN_SRST0),
+ .active_low = 1,
+ .desc = "back",
+ .wakeup = 1,
+ }
+};
+
+static struct gpio_keys_platform_data armadillo5x0_button_data = {
+ .buttons = armadillo5x0_buttons,
+ .nbuttons = ARRAY_SIZE(armadillo5x0_buttons),
+};
+
+static struct platform_device armadillo5x0_button_device = {
+ .name = "gpio-keys",
+ .id = -1,
+ .num_resources = 0,
+ .dev = {
+ .platform_data = &armadillo5x0_button_data,
+ }
+};
/*
* NAND Flash
@@ -300,6 +332,7 @@
static struct platform_device *devices[] __initdata = {
&armadillo5x0_smc911x_device,
+ &armadillo5x0_button_device,
};
/*