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ARM: shmobile: lager: support GPIO switches 

The lager board has pins 1 - 4 of SW2 wired up to GPIO pins.
This patch allows access to those pins as KEYS 1 - 4 using
gpio-keys.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Simon Horman 2013-05-13 16:04:31 +09:00
parent 1034f4ee3f
commit c3842e4fcb
1 changed files with 23 additions and 1 deletions
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24
arch/arm/mach-shmobile/board-lager.c
View File

@ -18,6 +18,9 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/irqchip.h>
#include <linux/kernel.h>
@ -47,11 +50,27 @@ static struct gpio_led lager_leds[] = {
},
};
static struct gpio_led_platform_data lager_leds_pdata = {
static __initdata struct gpio_led_platform_data lager_leds_pdata = {
.leds = lager_leds,
.num_leds = ARRAY_SIZE(lager_leds),
};
/* GPIO KEY */
#define GPIO_KEY(c, g, d, ...) \
{ .code = c, .gpio = g, .desc = d, .active_low = 1 }
static __initdata struct gpio_keys_button gpio_buttons[] = {
GPIO_KEY(KEY_4, RCAR_GP_PIN(1, 28), "SW2-pin4"),
GPIO_KEY(KEY_3, RCAR_GP_PIN(1, 26), "SW2-pin3"),
GPIO_KEY(KEY_2, RCAR_GP_PIN(1, 24), "SW2-pin2"),
GPIO_KEY(KEY_1, RCAR_GP_PIN(1, 14), "SW2-pin1"),
};
static __initdata struct gpio_keys_platform_data lager_keys_pdata = {
.buttons = gpio_buttons,
.nbuttons = ARRAY_SIZE(gpio_buttons),
};
static const struct pinctrl_map lager_pinctrl_map[] = {
/* SCIF0 (CN19: DEBUG SERIAL0) */
PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7790",
@ -73,6 +92,9 @@ static void __init lager_add_standard_devices(void)
platform_device_register_data(&platform_bus, "leds-gpio", -1,
&lager_leds_pdata,
sizeof(lager_leds_pdata));
platform_device_register_data(&platform_bus, "gpio-keys", -1,
&lager_keys_pdata,
sizeof(lager_keys_pdata));
}
static const char *lager_boards_compat_dt[] __initdata = {