linux-kernel - [RFC/RFT PATCH 3/4] drm/bridge: dw-hdmi: Enable CSC even for DVI

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Message-Id: <1484656294-6140-4-git-send-email-narmstrong@baylibre.com>
Date:   Tue, 17 Jan 2017 13:31:33 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     dri-devel@...ts.freedesktop.org,
        laurent.pinchart+renesas@...asonboard.com
Cc:     Neil Armstrong <narmstrong@...libre.com>, Jose.Abreu@...opsys.com,
        kieran.bingham@...asonboard.com, linux-amlogic@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [RFC/RFT PATCH 3/4] drm/bridge: dw-hdmi: Enable CSC even for DVI

If the input pixel format is not RGB, the CSC must be enabled in order to
provide valid pixel to DVI sinks.
This patch removes the hdmi only dependency on the CSC enabling.

Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
 drivers/gpu/drm/bridge/dw-hdmi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c
index 923e250..8a6a183 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw-hdmi.c
@@ -1331,8 +1331,8 @@ static void dw_hdmi_enable_video_path(struct dw_hdmi *hdmi)
 		hdmi_writeb(hdmi, clkdis, HDMI_MC_CLKDIS);
 	}
 
-	/* Enable color space conversion if needed (for HDMI sinks only). */
-	if (hdmi->sink_is_hdmi && is_color_space_conversion(hdmi))
+	/* Enable color space conversion if needed */
+	if (is_color_space_conversion(hdmi))
 		hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH,
 			    HDMI_MC_FLOWCTRL);
 	else
-- 
1.9.1