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Commit fcbd0c5f authored by Arnaud Patard's avatar Arnaud Patard Committed by Sascha Hauer
Browse files

efikamx: add support for power key 



This patch adds support for power key button of the efika mx. It's connected
on  GPIO 2 31.

Signed-off-by: default avatarArnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 9d2c0ef7

arch/arm/mach-mx5/board-mx51_efikamx.c

+24 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/i2c.h>

#include <linux/gpio.h>

#include <linux/leds.h>

#include <linux/input.h>

#include <linux/delay.h>

#include <linux/io.h>

#include <linux/fsl_devices.h>
@@ -48,10 +49,13 @@ 
#define EFIKAMX_GREEN_LED	(2*32 + 14)

#define EFIKAMX_RED_LED		(2*32 + 15)



#define EFIKAMX_POWER_KEY	(1*32 + 31)



/* the pci ids pin have pull up. they're driven low according to board id */

#define MX51_PAD_PCBID0	IOMUX_PAD(0x518, 0x130, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)

#define MX51_PAD_PCBID1	IOMUX_PAD(0x51C, 0x134, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)

#define MX51_PAD_PCBID2	IOMUX_PAD(0x504, 0x128, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)

#define MX51_PAD_PWRKEY	IOMUX_PAD(0x48c, 0x0f8, 1, 0x0,   0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)



static iomux_v3_cfg_t mx51efikamx_pads[] = {

	/* UART1 */
@@ -90,6 +94,9 @@ static iomux_v3_cfg_t mx51efikamx_pads[] = { 
	MX51_PAD_CSI1_D9__GPIO_3_13,

	MX51_PAD_CSI1_VSYNC__GPIO_3_14,

	MX51_PAD_CSI1_HSYNC__GPIO_3_15,



	/* power key */

	MX51_PAD_PWRKEY,

};



/* Serial ports */
@@ -219,6 +226,22 @@ static struct platform_device mx51_efikamx_leds_device = { 
	},

};



static struct gpio_keys_button mx51_efikamx_powerkey[] = {

	{

		.code = KEY_POWER,

		.gpio = EFIKAMX_POWER_KEY,

		.type = EV_PWR,

		.desc = "Power Button (CM)",

		.wakeup = 1,

		.debounce_interval = 10, /* ms */

	},

};



static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = {

	.buttons = mx51_efikamx_powerkey,

	.nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey),

};



static void __init mxc_board_init(void)

{

	mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
@@ -235,6 +258,7 @@ static void __init mxc_board_init(void) 
	}



	platform_device_register(&mx51_efikamx_leds_device);

	imx51_add_gpio_keys(&mx51_efikamx_powerkey_data);

}



static void __init mx51_efikamx_timer_init(void)