From: Zheng Yang <zhengyang@rock-chips.com>
Date: Sat, 22 Sep 2012 11:09:43 +0000 (+0800)
Subject: rk2928:hdmi: For 1080P, enable pre-emphasis to improve singal quality.
X-Git-Tag: firefly_0821_release~8588
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b5a25abdd328e4fc4faaa57430febb2382ddcdd1;p=firefly-linux-kernel-4.4.55.git

rk2928:hdmi: For 1080P, enable pre-emphasis to improve singal quality.
---

diff --git a/drivers/video/rockchip/hdmi/chips/rk2928/rk2928_hdmi_hw.c b/drivers/video/rockchip/hdmi/chips/rk2928/rk2928_hdmi_hw.c
index f2e709db6f04..63bff24236c2 100755
--- a/drivers/video/rockchip/hdmi/chips/rk2928/rk2928_hdmi_hw.c
+++ b/drivers/video/rockchip/hdmi/chips/rk2928/rk2928_hdmi_hw.c
@@ -33,7 +33,6 @@ static void rk2928_hdmi_sys_power_down(void)
 
 static void rk2928_hdmi_set_pwr_mode(int mode)
 {
-	int c=0;
 	hdmi_dbg(hdmi->dev,"%s \n",__FUNCTION__);
 	if(hdmi->pwr_mode == mode)
 		return; 
@@ -271,7 +270,13 @@ static int rk2928_hdmi_config_video(struct hdmi_video_para *vpara)
 	else {
 		hdmi_dbg(hdmi->dev, "[%s] sucess output DVI.\n", __FUNCTION__);	
 	}
-
+	
+	if(hdmi->tmdsclk >= 148500000) {
+		HDMIWrReg(0xe3, 0x4f);
+	}
+	else {
+		HDMIWrReg(0xe3, 0x0f);
+	}
 	return 0;
 }
 
diff --git a/drivers/video/rockchip/hdmi/chips/rk2928/rk2928_hdmi_hw.h b/drivers/video/rockchip/hdmi/chips/rk2928/rk2928_hdmi_hw.h
old mode 100644
new mode 100755
index fcc6be786bd7..aa4fa1510d69
--- a/drivers/video/rockchip/hdmi/chips/rk2928/rk2928_hdmi_hw.h
+++ b/drivers/video/rockchip/hdmi/chips/rk2928/rk2928_hdmi_hw.h
@@ -238,7 +238,7 @@ enum {
 	#define v_LDO_PWR_DOWN(n)	(n << 2)
 
 #define HDMIRdReg(addr)						readl_relaxed(hdmi->regbase + (addr) * 0x04)
-#define HDMIWrReg(addr, val)        		writel_relaxed((val), hdmi->regbase + (addr) * 0x04);
+#define HDMIWrReg(addr, val)        		writel_relaxed((val), hdmi->regbase + (addr) * 0x04)
 #define HDMIMskReg(temp, addr, msk, val)	\
 	temp = readl_relaxed(hdmi->regbase + (addr) * 0x04) & (0xFF - (msk)) ; \
 	writel_relaxed(temp | ( (val) & (msk) ),  hdmi->regbase + (addr) * 0x04);