MIPS: ath79: add common GPIO buttons device
[linux-2.6.git] / arch / mips / ath79 / mach-pb44.c
index e176779..3dc5080 100644 (file)
 #include <linux/i2c/pcf857x.h>
 
 #include "machtypes.h"
+#include "dev-gpio-buttons.h"
 #include "dev-leds-gpio.h"
 
 #define PB44_GPIO_I2C_SCL      0
 #define PB44_GPIO_I2C_SDA      1
 
 #define PB44_GPIO_EXP_BASE     16
+#define PB44_GPIO_SW_RESET     (PB44_GPIO_EXP_BASE + 6)
+#define PB44_GPIO_SW_JUMP      (PB44_GPIO_EXP_BASE + 8)
 #define PB44_GPIO_LED_JUMP1    (PB44_GPIO_EXP_BASE + 9)
 #define PB44_GPIO_LED_JUMP2    (PB44_GPIO_EXP_BASE + 10)
 
+#define PB44_KEYS_POLL_INTERVAL                20      /* msecs */
+#define PB44_KEYS_DEBOUNCE_INTERVAL    (3 * PB44_KEYS_POLL_INTERVAL)
+
 static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
        .sda_pin        = PB44_GPIO_I2C_SDA,
        .scl_pin        = PB44_GPIO_I2C_SCL,
@@ -60,6 +66,24 @@ static struct gpio_led pb44_leds_gpio[] __initdata = {
        },
 };
 
+static struct gpio_keys_button pb44_gpio_keys[] __initdata = {
+       {
+               .desc           = "soft_reset",
+               .type           = EV_KEY,
+               .code           = KEY_RESTART,
+               .debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
+               .gpio           = PB44_GPIO_SW_RESET,
+               .active_low     = 1,
+       } , {
+               .desc           = "jumpstart",
+               .type           = EV_KEY,
+               .code           = KEY_WPS_BUTTON,
+               .debounce_interval = PB44_KEYS_DEBOUNCE_INTERVAL,
+               .gpio           = PB44_GPIO_SW_JUMP,
+               .active_low     = 1,
+       }
+};
+
 static void __init pb44_init(void)
 {
        i2c_register_board_info(0, pb44_i2c_board_info,
@@ -68,6 +92,9 @@ static void __init pb44_init(void)
 
        ath79_register_leds_gpio(-1, ARRAY_SIZE(pb44_leds_gpio),
                                 pb44_leds_gpio);
+       ath79_register_gpio_keys_polled(-1, PB44_KEYS_POLL_INTERVAL,
+                                       ARRAY_SIZE(pb44_gpio_keys),
+                                       pb44_gpio_keys);
 }
 
 MIPS_MACHINE(ATH79_MACH_PB44, "PB44", "Atheros PB44 reference board",