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OMAP3: RX-51: support sleep indicator LEDs

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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: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman 2009-10-02 08:17:56 -07:00
parent 709731bb36
commit a4b41d8ed8
1 changed files with 25 additions and 0 deletions
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25
arch/arm/mach-omap2/board-rx51.c
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@ -16,6 +16,7 @@
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/io.h> #include <linux/io.h>
#include <linux/gpio.h> #include <linux/gpio.h>
#include <linux/leds.h>
#include <mach/hardware.h> #include <mach/hardware.h>
#include <asm/mach-types.h> #include <asm/mach-types.h>
@ -31,8 +32,30 @@
#include "mux.h" #include "mux.h"
#define RX51_GPIO_SLEEP_IND 162
struct omap_sdrc_params *rx51_get_sdram_timings(void); 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 = { static struct omap_lcd_config rx51_lcd_config = {
.ctrl_name = "internal", .ctrl_name = "internal",
}; };
@ -88,6 +111,8 @@ static void __init rx51_init(void)
/* Ensure SDRC pins are mux'd for self-refresh */ /* Ensure SDRC pins are mux'd for self-refresh */
omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT); omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT); omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
platform_device_register(&leds_gpio);
} }
static void __init rx51_map_io(void) static void __init rx51_map_io(void)