leds: Add suspend/resume state flags to leds-gpio

Add an option to preserve LED state when suspending/resuming to the LED gpio driver. Based on a suggestion from Robert Jarzmik. Tested-by: Robert Jarzmik <[email protected]> Signed-off-by: Richard Purdie <[email protected]>
htakata · Apr 6, 2009 · defb512 · defb512
1 parent 41c42ff
commit defb512
Show file tree

Hide file tree

Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
@@ -93,7 +93,8 @@ static int __devinit create_gpio_led(const struct gpio_led *template,
 	}
 	led_dat->cdev.brightness_set = gpio_led_set;
 	led_dat->cdev.brightness = LED_OFF;
-	led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
+	if (!template->retain_state_suspended)
+		led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
 
 	ret = gpio_direction_output(led_dat->gpio, led_dat->active_low);
 	if (ret < 0)

diff --git a/include/linux/leds.h b/include/linux/leds.h
@@ -141,7 +141,8 @@ struct gpio_led {
 	const char *name;
 	const char *default_trigger;
 	unsigned 	gpio;
-	u8 		active_low;
+	u8 		active_low : 1;
+	u8		retain_state_suspended : 1;
 };
 
 struct gpio_led_platform_data {