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Commit a4b41d8e authored by Kevin Hilman's avatar Kevin Hilman
Browse files

OMAP3: RX-51: support sleep indicator LEDs 



The sleep indicator LEDs can be enabled/disabled by toggling GPIO162.
Use the LED GPIO class to export this LED functionality to userspace.

To enable:

  # echo 1 > /sys/class/leds/sleep_ind/brightness

To disable:

  # echo 0 > /sys/class/leds/sleep_ind/brightness

Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent 709731bb

arch/arm/mach-omap2/board-rx51.c

+25 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/clk.h>

#include <linux/io.h>

#include <linux/gpio.h>

#include <linux/leds.h>



#include <mach/hardware.h>

#include <asm/mach-types.h>
@@ -31,8 +32,30 @@ 


#include "mux.h"



#define RX51_GPIO_SLEEP_IND 162



struct omap_sdrc_params *rx51_get_sdram_timings(void);



static struct gpio_led gpio_leds[] = {

	{

		.name	= "sleep_ind",

		.gpio	= RX51_GPIO_SLEEP_IND,

	},

};



static struct gpio_led_platform_data gpio_led_info = {

	.leds		= gpio_leds,

	.num_leds	= ARRAY_SIZE(gpio_leds),

};



static struct platform_device leds_gpio = {

	.name	= "leds-gpio",

	.id	= -1,

	.dev	= {

		.platform_data	= &gpio_led_info,

	},

};



static struct omap_lcd_config rx51_lcd_config = {

	.ctrl_name	= "internal",

};
@@ -88,6 +111,8 @@ static void __init rx51_init(void) 
	/* Ensure SDRC pins are mux'd for self-refresh */

	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);

	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);



	platform_device_register(&leds_gpio);

}



static void __init rx51_map_io(void)