From: 黄涛 <huangtao@rock-chips.com>
Date: Fri, 12 Aug 2011 03:41:22 +0000 (+0800)
Subject: backlight: aw9364: faster resume
X-Git-Tag: firefly_0821_release~9772^2~20^2~7^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=058329f6a231ef4932df8c6acddfdb4bfc318d66;p=firefly-linux-kernel-4.4.55.git

backlight: aw9364: faster resume
---

diff --git a/drivers/video/backlight/aw9364_bl.c b/drivers/video/backlight/aw9364_bl.c
index 72d23e513caf..ed011bdd8bf1 100755
--- a/drivers/video/backlight/aw9364_bl.c
+++ b/drivers/video/backlight/aw9364_bl.c
@@ -97,8 +97,12 @@ static int aw9364_backlight_update_status(struct backlight_device *bl)
 
 	int brightness = bl->props.brightness;
 	
-	if(g_aw9364_data->suspend_flag == 1)
+	if(g_aw9364_data->suspend_flag == 1) {
 		brightness = 0;
+		g_aw9364_data->suspend_flag = 2;
+	} else if (g_aw9364_data->suspend_flag > 1) {
+		return 0;
+	}
 	
 	if (g_aw9364_data->shutdown_flag == 1)
 		brightness = 0;
@@ -152,6 +156,11 @@ static void aw9364_bl_resume(struct early_suspend *h)
 	aw9364_data = container_of(h, struct aw9364_backlight_data, early_suspend);
 	aw9364_data->suspend_flag = 0;
 
+	struct backlight_device *bl = g_aw9364_bl;
+	int brightness = bl->props.brightness;
+	bl->props.brightness = brightness >> 1;
+	backlight_update_status(bl);
+	bl->props.brightness = brightness;
 	schedule_delayed_work(&aw9364_data->work, msecs_to_jiffies(0));
 	
 }
@@ -205,7 +214,7 @@ static int aw9364_backlight_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, bl);
 
 #ifdef CONFIG_HAS_EARLYSUSPEND	
-	data->early_suspend.level = ~0x0;
+	data->early_suspend.level = EARLY_SUSPEND_LEVEL_STOP_DRAWING - 1;
 	data->early_suspend.suspend = aw9364_bl_suspend;
 	data->early_suspend.resume = aw9364_bl_resume;
 	register_early_suspend(&data->early_suspend);