From: Richard Purdie <rpurdie@linux.intel.com>
Date: Tue, 17 Feb 2009 15:04:07 +0000 (+0000)
Subject: leds: Add suspend/resume state flags to leds-gpio
X-Git-Tag: firefly_0821_release~14762^2~10
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=defb512d2576992c63ba1c18c24eea31cfeaa26e;p=firefly-linux-kernel-4.4.55.git

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 <robert.jarzmik@free.fr>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
---

diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 0daa2d21cbde..8fa352ac20f8 100644
--- 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
index 17d277e0c4a6..376fe07732ea 100644
--- 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 {