Commit c3842e4f authored by Simon Horman's avatar Simon Horman

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: default avatarSimon Horman <horms+renesas@verge.net.au>
parent 1034f4ee
...@@ -18,6 +18,9 @@ ...@@ -18,6 +18,9 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * 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/interrupt.h>
#include <linux/irqchip.h> #include <linux/irqchip.h>
#include <linux/kernel.h> #include <linux/kernel.h>
...@@ -47,11 +50,27 @@ static struct gpio_led lager_leds[] = { ...@@ -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, .leds = lager_leds,
.num_leds = ARRAY_SIZE(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[] = { static const struct pinctrl_map lager_pinctrl_map[] = {
/* SCIF0 (CN19: DEBUG SERIAL0) */ /* SCIF0 (CN19: DEBUG SERIAL0) */
PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7790", PIN_MAP_MUX_GROUP_DEFAULT("sh-sci.6", "pfc-r8a7790",
...@@ -73,6 +92,9 @@ static void __init lager_add_standard_devices(void) ...@@ -73,6 +92,9 @@ static void __init lager_add_standard_devices(void)
platform_device_register_data(&platform_bus, "leds-gpio", -1, platform_device_register_data(&platform_bus, "leds-gpio", -1,
&lager_leds_pdata, &lager_leds_pdata,
sizeof(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 = { static const char *lager_boards_compat_dt[] __initdata = {
......
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