From: Zheng Yang <zhengyang@rock-chips.com>
Date: Tue, 7 Feb 2017 06:42:50 +0000 (+0800)
Subject: video: rockchip: hdmi: add dts property rockchip,defaultdepth
X-Git-Tag: firefly_0821_release~629
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=eb1056fb41259fd96e2fad5b196686b9c7342302;p=firefly-linux-kernel-4.4.55.git

video: rockchip: hdmi: add dts property rockchip,defaultdepth

To modify hdmi default output color depth, use following dts:

&hdmi {
	rockchip,defaultdepth = <10>;
}

rockchip,defaultdepth could be following value:
<0>  auto select color depth, prefer 8bit
<8>  8bit
<10> 10bit

Change-Id: Idce0bd080c042edf3939c5c38b76d4d1860b7a9f
Signed-off-by: Zheng Yang <zhengyang@rock-chips.com>
(cherry picked from commit 905228ba1e43c24b3048820a7f1047a4ed5ef185)
---

diff --git a/drivers/video/rockchip/hdmi/rockchip-hdmi-core.c b/drivers/video/rockchip/hdmi/rockchip-hdmi-core.c
index cf6933bc3fbc..074f6d21626e 100644
--- a/drivers/video/rockchip/hdmi/rockchip-hdmi-core.c
+++ b/drivers/video/rockchip/hdmi/rockchip-hdmi-core.c
@@ -639,7 +639,7 @@ struct hdmi *rockchip_hdmi_register(struct hdmi_property *property,
 		hdmi->vic = hdmi->property->defaultmode;
 	}
 	hdmi->colormode = HDMI_VIDEO_DEFAULT_COLORMODE;
-	hdmi->colordepth = HDMI_VIDEO_DEFAULT_COLORDEPTH;
+	hdmi->colordepth = hdmi->property->defaultdepth;
 	hdmi->colorimetry = HDMI_COLORIMETRY_NO_DATA;
 	hdmi->mode_3d = HDMI_3D_NONE;
 	hdmi->audio.type = HDMI_AUDIO_DEFAULT_TYPE;
diff --git a/drivers/video/rockchip/hdmi/rockchip-hdmi.h b/drivers/video/rockchip/hdmi/rockchip-hdmi.h
index 1e788b9dae3e..08e1f9b47ee9 100644
--- a/drivers/video/rockchip/hdmi/rockchip-hdmi.h
+++ b/drivers/video/rockchip/hdmi/rockchip-hdmi.h
@@ -440,6 +440,7 @@ struct hdmi_property {
 	int display;
 	int feature;
 	int defaultmode;
+	int defaultdepth;
 	void *priv;
 };
 
diff --git a/drivers/video/rockchip/hdmi/rockchip-hdmiv2/rockchip_hdmiv2.c b/drivers/video/rockchip/hdmi/rockchip-hdmiv2/rockchip_hdmiv2.c
index d8c1f1e4c02f..09dcedb8df9a 100644
--- a/drivers/video/rockchip/hdmi/rockchip-hdmiv2/rockchip_hdmiv2.c
+++ b/drivers/video/rockchip/hdmi/rockchip-hdmiv2/rockchip_hdmiv2.c
@@ -528,6 +528,13 @@ static int rockchip_hdmiv2_parse_dt(struct hdmi_dev *hdmi_dev)
 	} else {
 		rk_hdmi_property.defaultmode = HDMI_VIDEO_DEFAULT_MODE;
 	}
+	if (!of_property_read_u32(np, "rockchip,defaultdepth", &val) &&
+	    (val > 0)) {
+		pr_info("default depth is %d\n", val);
+		rk_hdmi_property.defaultdepth = val;
+	} else {
+		rk_hdmi_property.defaultdepth = HDMI_VIDEO_DEFAULT_COLORDEPTH;
+	}
 	if (of_get_property(np, "rockchip,phy_table", &val)) {
 		hdmi_dev->phy_table = kmalloc(val, GFP_KERNEL);
 		if (!hdmi_dev->phy_table) {