From: Sandor Yu <R01008@freescale.com>
Date: Fri, 1 Jun 2012 10:14:12 +0000 (+0800)
Subject: ENGR00211844 MX6x HDMI display can't show video to after suspend/resume
X-Git-Tag: v3.0.35-fsl~942
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e628b8df81e6ccd1d88e75335fd2691d7af69e74;p=karo-tx-linux.git

ENGR00211844 MX6x HDMI display can't show video to after suspend/resume

Added hdmi clock gating/ungating when devide suspend/resume

Signed-off-by: Sandor Yu <R01008@freescale.com>
---

diff --git a/drivers/video/mxc_hdmi.c b/drivers/video/mxc_hdmi.c
index 5ef2c9f2e923..e778b4e91f48 100644
--- a/drivers/video/mxc_hdmi.c
+++ b/drivers/video/mxc_hdmi.c
@@ -2087,13 +2087,23 @@ static int mxc_hdmi_fb_event(struct notifier_block *nb,
 	case FB_EVENT_SUSPEND:
 		dev_dbg(&hdmi->pdev->dev,
 			"event=FB_EVENT_SUSPEND\n");
-		mxc_hdmi_phy_disable(hdmi);
+
+		if (hdmi->blank == FB_BLANK_UNBLANK) {
+			mxc_hdmi_phy_disable(hdmi);
+			clk_disable(hdmi->hdmi_iahb_clk);
+			clk_disable(hdmi->hdmi_isfr_clk);
+		}
 		break;
 
 	case FB_EVENT_RESUME:
 		dev_dbg(&hdmi->pdev->dev,
 			"event=FB_EVENT_RESUME\n");
-		mxc_hdmi_phy_init(hdmi);
+
+		if (hdmi->blank == FB_BLANK_UNBLANK) {
+			clk_enable(hdmi->hdmi_iahb_clk);
+			clk_enable(hdmi->hdmi_isfr_clk);
+			mxc_hdmi_phy_init(hdmi);
+		}
 		break;
 
 	}