diff options
| author | Gabor Juhos <juhosg@openwrt.org> | 2011-01-04 21:28:21 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2011-01-18 19:30:27 +0100 |
| commit | 3f348c5d1aaa0b8b2563f50d2d9a0c64e7d649fb (patch) | |
| tree | cdd531781d22fe64c5c3cce0a56de153bf9cc397 /arch/mips/ath79/mach-pb44.c | |
| parent | 858f763c1cc37ecc6ab39dec60bb3a46606dcac4 (diff) | |
MIPS: ath79: add common GPIO buttons device
Almost all boards have one or more push buttons connected to GPIO lines.
This patch adds common code to register a platform_device for them.
The patch also adds support for the buttons on the PB44 board.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: Luis R. Rodriguez <lrodriguez@atheros.com>
Cc: Cliff Holden <Cliff.Holden@Atheros.com>
Cc: Kathy Giori <Kathy.Giori@Atheros.com>
Patchwork: https://patchwork.linux-mips.org/patch/1954/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/ath79/mach-pb44.c')
| -rw-r--r-- | arch/mips/ath79/mach-pb44.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/mips/ath79/mach-pb44.c b/arch/mips/ath79/mach-pb44.c index e176779af66..3dc5080185c 100644 --- a/arch/mips/ath79/mach-pb44.c +++ b/arch/mips/ath79/mach-pb44.c @@ -15,15 +15,21 @@ #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", |