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>

diff --git a/arch/arm/mach-mx5/board-mx51_efikamx.c b/arch/arm/mach-mx5/board-mx51_efikamx.c
index 842d6bf..386bf2a 100644 (file)
--- a/arch/arm/mach-mx5/board-mx51_efikamx.c
+++ b/arch/arm/mach-mx5/board-mx51_efikamx.c
@@ -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)