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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: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Arnaud Patard (Rtp) 2010-10-27 14:40:52 +02:00 committed by Sascha Hauer
parent 9d2c0ef76f
commit fcbd0c5f20
1 changed files with 24 additions and 0 deletions
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24
arch/arm/mach-mx5/board-mx51_efikamx.c
View File

@ -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)