From: Manjunathappa, Prakash <prakash.pm@ti.com>
Date: Tue, 24 Jul 2012 04:15:25 +0000 (+0530)
Subject: da8xx-fb: do not turn ON LCD backlight unless LCDC is enabled
X-Git-Tag: v3.6-rc1~16^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f7c848b6ef31af09925bb6f4c79e236ca9f94ed9;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

da8xx-fb: do not turn ON LCD backlight unless LCDC is enabled

LCD blink is observed during suspend/resume and blank/unblank
operations as backlight is ON during LCDC disable and enable.
So make sure to turn OFF backlight before disabling and turn
it ON after enabling.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
---

diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index e81a458..ca9943a 100644
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -1038,10 +1038,10 @@ static int cfb_blank(int blank, struct fb_info *info)
 	par->blank = blank;
 	switch (blank) {
 	case FB_BLANK_UNBLANK:
+		lcd_enable_raster();
+
 		if (par->panel_power_ctrl)
 			par->panel_power_ctrl(1);
-
-		lcd_enable_raster();
 		break;
 	case FB_BLANK_NORMAL:
 	case FB_BLANK_VSYNC_SUSPEND:
@@ -1422,11 +1422,12 @@ static int fb_resume(struct platform_device *dev)
 	struct da8xx_fb_par *par = info->par;
 
 	console_lock();
+	clk_enable(par->lcdc_clk);
+	lcd_enable_raster();
+
 	if (par->panel_power_ctrl)
 		par->panel_power_ctrl(1);
 
-	clk_enable(par->lcdc_clk);
-	lcd_enable_raster();
 	fb_set_suspend(info, 0);
 	console_unlock();