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authorShawn Guo <shawn.guo@linaro.org>2011-05-31 17:07:03 +0800
committerSascha Hauer <s.hauer@pengutronix.de>2011-07-07 10:01:07 +0200
commit53b8ff9d3781fe6ff74494ecaea735b322d9ef8e (patch)
treef1d411ffd2e4259f04eaedaf67e3d98787fd7e16 /arch/arm/mach-mxs/mach-mx28evk.c
parent95b7445946ca68222ad84cad3703a1efe1110869 (diff)
ARM: mxs/mx28evk: add leds-gpio device for heartbeat
It adds LED2 on mx28evk board as heartbeat trigger for diagnostic purpose. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mxs/mach-mx28evk.c')
-rw-r--r--arch/arm/mach-mxs/mach-mx28evk.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
index 56767a5cce0..eaaf6ff2899 100644
--- a/arch/arm/mach-mxs/mach-mx28evk.c
+++ b/arch/arm/mach-mxs/mach-mx28evk.c
@@ -15,6 +15,7 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
+#include <linux/leds.h>
#include <linux/irq.h>
#include <linux/clk.h>
@@ -29,6 +30,7 @@
#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
#define MX28EVK_FEC_PHY_POWER MXS_GPIO_NR(2, 15)
+#define MX28EVK_GPIO_LED MXS_GPIO_NR(3, 5)
#define MX28EVK_BL_ENABLE MXS_GPIO_NR(3, 18)
#define MX28EVK_LCD_ENABLE MXS_GPIO_NR(3, 30)
#define MX28EVK_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
@@ -178,6 +180,23 @@ static const iomux_cfg_t mx28evk_pads[] __initconst = {
/* slot power enable */
MX28_PAD_PWM4__GPIO_3_29 |
(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
+
+ /* led */
+ MX28_PAD_AUART1_TX__GPIO_3_5 | MXS_PAD_CTRL,
+};
+
+/* led */
+static const struct gpio_led mx28evk_leds[] __initconst = {
+ {
+ .name = "GPIO-LED",
+ .default_trigger = "heartbeat",
+ .gpio = MX28EVK_GPIO_LED,
+ },
+};
+
+static const struct gpio_led_platform_data mx28evk_led_data __initconst = {
+ .leds = mx28evk_leds,
+ .num_leds = ARRAY_SIZE(mx28evk_leds),
};
/* fec */
@@ -385,6 +404,8 @@ static void __init mx28evk_init(void)
if (ret)
pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret);
mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
+
+ gpio_led_register_device(0, &mx28evk_led_data);
}
static void __init mx28evk_timer_init(void)