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| author | Andrew Victor <andrew@sanpeople.com> | 2007-06-04 08:41:59 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-07-12 11:11:21 +0100 |
| commit | d0f9b55ece0ec1ffc9e2e57fd7a79200994aead4 (patch) | |
| tree | da67cbf9d0bf6850e4ba98e642ebdf0821c21f91 | |
| parent | cdf95c73694e464cf9877cb5aa51df77f42815bc (diff) | |
| download | linux-d0f9b55ece0ec1ffc9e2e57fd7a79200994aead4.tar.gz linux-d0f9b55ece0ec1ffc9e2e57fd7a79200994aead4.tar.bz2 linux-d0f9b55ece0ec1ffc9e2e57fd7a79200994aead4.zip | |
[ARM] 4420/2: AT91: GPIO buttons on SAM9261-EK board
Register the GPIO-connected buttons on the SAM9261-EK board as a
"gpio-keys" platform device.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mach-at91/board-sam9261ek.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c index 579b41f0c328..42e172cb0f49 100644 --- a/arch/arm/mach-at91/board-sam9261ek.c +++ b/arch/arm/mach-at91/board-sam9261ek.c @@ -28,6 +28,8 @@ #include <linux/spi/ads7846.h> #include <linux/dm9000.h> #include <linux/fb.h> +#include <linux/gpio_keys.h> +#include <linux/input.h> #include <video/atmel_lcdc.h> @@ -333,6 +335,68 @@ static struct atmel_lcdfb_info __initdata ek_lcdc_data; #endif +/* + * GPIO Buttons + */ +#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE) +static struct gpio_keys_button ek_buttons[] = { + { + .gpio = AT91_PIN_PA27, + .keycode = BTN_0, + .desc = "Button 0", + .active_low = 1, + }, + { + .gpio = AT91_PIN_PA26, + .keycode = BTN_1, + .desc = "Button 1", + .active_low = 1, + }, + { + .gpio = AT91_PIN_PA25, + .keycode = BTN_2, + .desc = "Button 2", + .active_low = 1, + }, + { + .gpio = AT91_PIN_PA24, + .keycode = BTN_3, + .desc = "Button 3", + .active_low = 1, + } +}; + +static struct gpio_keys_platform_data ek_button_data = { + .buttons = ek_buttons, + .nbuttons = ARRAY_SIZE(ek_buttons), +}; + +static struct platform_device ek_button_device = { + .name = "gpio-keys", + .id = -1, + .num_resources = 0, + .dev = { + .platform_data = &ek_button_data, + } +}; + +static void __init ek_add_device_buttons(void) +{ + at91_set_gpio_input(AT91_PIN_PB27, 0); /* btn0 */ + at91_set_deglitch(AT91_PIN_PB27, 1); + at91_set_gpio_input(AT91_PIN_PB26, 0); /* btn1 */ + at91_set_deglitch(AT91_PIN_PB26, 1); + at91_set_gpio_input(AT91_PIN_PB25, 0); /* btn2 */ + at91_set_deglitch(AT91_PIN_PB25, 1); + at91_set_gpio_input(AT91_PIN_PB24, 0); /* btn3 */ + at91_set_deglitch(AT91_PIN_PB24, 1); + + platform_device_register(&ek_button_device); +} +#else +static void __init ek_add_device_buttons(void) {} +#endif + static void __init ek_board_init(void) { /* Serial */ @@ -360,6 +424,8 @@ static void __init ek_board_init(void) #endif /* LCD Controller */ at91_add_device_lcdc(&ek_lcdc_data); + /* Push Buttons */ + ek_add_device_buttons(); } MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK") |