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Commit 53b8ff9d authored by Shawn Guo's avatar Shawn Guo Committed by Sascha Hauer
Browse files

ARM: mxs/mx28evk: add leds-gpio device for heartbeat 



It adds LED2 on mx28evk board as heartbeat trigger for diagnostic
purpose.

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 95b74459

arch/arm/mach-mxs/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ config MACH_MX23EVK 
config MACH_MX28EVK

	bool "Support MX28EVK Platform"

	select SOC_IMX28

	select LEDS_GPIO_REGISTER

	select MXS_HAVE_AMBA_DUART

	select MXS_HAVE_PLATFORM_AUART

	select MXS_HAVE_PLATFORM_FEC

arch/arm/mach-mxs/mach-mx28evk.c

+21 −0
Original line number Diff line number Diff line
@@ -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)