omap3 beagle: input button

Export Beagle's "user" button through the input framework so it's
accessible using normal mechanisms.  This uses BTN_EXTRA for lack
of a more obvious choice.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index cf452bb..4c1628c 100644 (file)
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -20,6 +20,10 @@
 #include <linux/clk.h>
 #include <linux/io.h>
 #include <linux/leds.h>
+#include <linux/gpio.h>
+#include <linux/input.h>
+#include <linux/gpio_keys.h>
+
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/nand.h>
@@ -30,7 +34,6 @@
 #include <asm/mach/map.h>
 #include <asm/mach/flash.h>
 
-#include <mach/gpio.h>
 #include <mach/board.h>
 #include <mach/usb-musb.h>
 #include <mach/usb-ehci.h>
@@ -165,6 +168,28 @@ static struct platform_device leds_gpio = {
        },
 };
 
+static struct gpio_keys_button gpio_buttons[] = {
+       {
+               .code                   = BTN_EXTRA,
+               .gpio                   = 7,
+               .desc                   = "user",
+               .wakeup                 = 1,
+       },
+};
+
+static struct gpio_keys_platform_data gpio_key_info = {
+       .buttons        = gpio_buttons,
+       .nbuttons       = ARRAY_SIZE(gpio_buttons),
+};
+
+static struct platform_device keys_gpio = {
+       .name   = "gpio-keys",
+       .id     = -1,
+       .dev    = {
+               .platform_data  = &gpio_key_info,
+       },
+};
+
 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
        { OMAP_TAG_UART,        &omap3_beagle_uart_config },
        { OMAP_TAG_MMC,         &omap3beagle_mmc_config },
@@ -177,6 +202,7 @@ static struct platform_device *omap3_beagle_devices[] __initdata = {
        &omap3_beagle_twl4030rtc_device,
 #endif
        &leds_gpio,
+       &keys_gpio,
 };
 
 void __init omap3beagle_flash_init(void)