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Commit 59c5fe6d authored by Nicolas Ferre's avatar Nicolas Ferre Committed by Russell King
Browse files

[ARM] 5562/2: at91: add gpio button support for at91sam9g20ek 



This adds input keyboard gpio support on at91sam9g20ek board.
It adds button 3 and 4.

Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: default avatarAndrew Victor <linux@maxim.org.za>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 9a24ee03

arch/arm/mach-at91/board-sam9g20ek.c

+54 −0
Original line number Original line Diff line number Diff line
@@ -24,6 +24,8 @@ 
#include <linux/platform_device.h>

#include <linux/platform_device.h>

#include <linux/spi/spi.h>

#include <linux/spi/spi.h>

#include <linux/spi/at73c213.h>

#include <linux/spi/at73c213.h>

#include <linux/gpio_keys.h>

#include <linux/input.h>

#include <linux/clk.h>

#include <linux/clk.h>





#include <mach/hardware.h>

#include <mach/hardware.h>
@@ -218,6 +220,56 @@ static struct gpio_led ek_leds[] = { 
	}

	}

};

};







/*

 * GPIO Buttons

 */

#if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)

static struct gpio_keys_button ek_buttons[] = {

	{

		.gpio		= AT91_PIN_PA30,

		.code		= BTN_3,

		.desc		= "Button 3",

		.active_low	= 1,

		.wakeup		= 1,

	},

	{

		.gpio		= AT91_PIN_PA31,

		.code		= BTN_4,

		.desc		= "Button 4",

		.active_low	= 1,

		.wakeup		= 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_PA30, 1);	/* btn3 */

	at91_set_deglitch(AT91_PIN_PA30, 1);

	at91_set_gpio_input(AT91_PIN_PA31, 1);	/* btn4 */

	at91_set_deglitch(AT91_PIN_PA31, 1);



	platform_device_register(&ek_button_device);

}

#else

static void __init ek_add_device_buttons(void) {}

#endif





static struct i2c_board_info __initdata ek_i2c_devices[] = {

static struct i2c_board_info __initdata ek_i2c_devices[] = {

	{

	{

		I2C_BOARD_INFO("24c512", 0x50),

		I2C_BOARD_INFO("24c512", 0x50),
@@ -245,6 +297,8 @@ static void __init ek_board_init(void) 
	at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));

	at91_add_device_i2c(ek_i2c_devices, ARRAY_SIZE(ek_i2c_devices));

	/* LEDs */

	/* LEDs */

	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));

	at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));

	/* Push Buttons */

	ek_add_device_buttons();

	/* PCK0 provides MCLK to the WM8731 */

	/* PCK0 provides MCLK to the WM8731 */

	at91_set_B_periph(AT91_PIN_PC1, 0);

	at91_set_B_periph(AT91_PIN_PC1, 0);

	/* SSC (for WM8731) */

	/* SSC (for WM8731) */