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efikamx: add leds support 

The efika mx a 3 leds (1 blue, 1 red, 1 green) connected on GPIOS 3 13/14/15.
Also, some special care is done for default trigger of blue led for mmc as
the mmc host used is different between hw revisions

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 14:40:51 +02:00 committed by Sascha Hauer
parent 82df68ad26
commit 9d2c0ef76f
1 changed files with 46 additions and 1 deletions
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47
arch/arm/mach-mx5/board-mx51_efikamx.c
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@ -18,6 +18,7 @@
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/fsl_devices.h>
@ -43,6 +44,10 @@
#define EFIKAMX_PCBID1 (2*32 + 17)
#define EFIKAMX_PCBID2 (2*32 + 11)
#define EFIKAMX_BLUE_LED (2*32 + 13)
#define EFIKAMX_GREEN_LED (2*32 + 14)
#define EFIKAMX_RED_LED (2*32 + 15)
/* 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)
@ -80,6 +85,11 @@ static iomux_v3_cfg_t mx51efikamx_pads[] = {
MX51_PAD_GPIO_1_1__ESDHC1_WP,
MX51_PAD_GPIO_1_7__ESDHC2_WP,
MX51_PAD_GPIO_1_8__ESDHC2_CD,
/* leds */
MX51_PAD_CSI1_D9__GPIO_3_13,
MX51_PAD_CSI1_VSYNC__GPIO_3_14,
MX51_PAD_CSI1_HSYNC__GPIO_3_15,
};
/* Serial ports */
@ -178,6 +188,37 @@ static void __init mx51_efikamx_board_id(void)
}
}
static struct gpio_led mx51_efikamx_leds[] = {
{
.name = "efikamx:green",
.default_trigger = "default-on",
.gpio = EFIKAMX_GREEN_LED,
},
{
.name = "efikamx:red",
.default_trigger = "ide-disk",
.gpio = EFIKAMX_RED_LED,
},
{
.name = "efikamx:blue",
.default_trigger = "mmc0",
.gpio = EFIKAMX_BLUE_LED,
},
};
static struct gpio_led_platform_data mx51_efikamx_leds_data = {
.leds = mx51_efikamx_leds,
.num_leds = ARRAY_SIZE(mx51_efikamx_leds),
};
static struct platform_device mx51_efikamx_leds_device = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &mx51_efikamx_leds_data,
},
};
static void __init mxc_board_init(void)
{
mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
@ -188,8 +229,12 @@ static void __init mxc_board_init(void)
imx51_add_esdhc(0, NULL);
/* on < 1.2 boards both SD controllers are used */
if (system_rev < 0x12)
if (system_rev < 0x12) {
imx51_add_esdhc(1, NULL);
mx51_efikamx_leds[2].default_trigger = "mmc1";
}
platform_device_register(&mx51_efikamx_leds_device);
}
static void __init mx51_efikamx_timer_init(void)