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| author | Kevin Hilman <khilman@deeprootsystems.com> | 2009-10-02 17:17:56 +0200 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2010-02-23 20:05:04 +0100 |
| commit | a4b41d8ed805e90bd855ac572eaeb13901d4af32 (patch) | |
| tree | 7639aeeaea6db55e845685f17b5d81ae582c61eb /arch/arm/mach-omap2/board-rx51.c | |
| parent | OMAP3: cpuidle: Add valid field into C-state parameter passing (diff) | |
| download | linux-a4b41d8ed805e90bd855ac572eaeb13901d4af32.tar.xz linux-a4b41d8ed805e90bd855ac572eaeb13901d4af32.zip | |
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: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-omap2/board-rx51.c')
| -rw-r--r-- | arch/arm/mach-omap2/board-rx51.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c index 6a49f916103d..26b70dab28cc 100644 --- a/arch/arm/mach-omap2/board-rx51.c +++ b/arch/arm/mach-omap2/board-rx51.c @@ -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) |