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[ARM] 4420/2: AT91: GPIO buttons on SAM9261-EK board

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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>
This commit is contained in:
Andrew Victor 2007-06-04 08:41:59 +01:00 committed by Russell King
parent cdf95c7369
commit d0f9b55ece
1 changed files with 66 additions and 0 deletions
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66
arch/arm/mach-at91/board-sam9261ek.c
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@ -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")