[PATCH v2 18/29] drm: bridge: dw-hdmi: Move CSC configuration out of PHY code

[Laurent Pinchart]

The color space converter isn't part of the PHY, move its configuration
out of PHY code.

Signed-off-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
---
 drivers/gpu/drm/bridge/dw-hdmi.c | 25 ++++++++++---------------
 1 file changed, 10 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c
index 6167eb6806fe..7c69c8c0285e 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw-hdmi.c
@@ -966,7 +966,7 @@ static void dw_hdmi_phy_power_on(struct dw_hdmi *hdmi)
        }
 }
 
-static int hdmi_phy_configure(struct dw_hdmi *hdmi, int cscon)
+static int hdmi_phy_configure(struct dw_hdmi *hdmi)
 {
        u8 val, msec;
        const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
@@ -998,14 +998,6 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi, int 
cscon)
                return -EINVAL;
        }
 
-       /* Enable csc path */
-       if (cscon)
-               val = HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH;
-       else
-               val = HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS;
-
-       hdmi_writeb(hdmi, val, HDMI_MC_FLOWCTRL);
-
        dw_hdmi_phy_power_off(hdmi);
 
        /* PHY reset */
@@ -1063,18 +1055,13 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi, int 
cscon)
 static int dw_hdmi_phy_init(struct dw_hdmi *hdmi)
 {
        int i, ret;
-       bool cscon;
-
-       /*check csc whether needed activated in HDMI mode */
-       cscon = hdmi->sink_is_hdmi && is_color_space_conversion(hdmi);
 
        /* HDMI Phy spec says to do the phy initialization sequence twice */
        for (i = 0; i < 2; i++) {
                dw_hdmi_phy_sel_data_en_pol(hdmi, 1);
                dw_hdmi_phy_sel_interface_control(hdmi, 0);
 
-               /* Enable CSC */
-               ret = hdmi_phy_configure(hdmi, cscon);
+               ret = hdmi_phy_configure(hdmi);
                if (ret)
                        return ret;
        }
@@ -1334,6 +1321,14 @@ static void dw_hdmi_enable_video_path(struct dw_hdmi 
*hdmi)
                clkdis &= ~HDMI_MC_CLKDIS_CSCCLK_DISABLE;
                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))
+               hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_IN_PATH,
+                           HDMI_MC_FLOWCTRL);
+       else
+               hdmi_writeb(hdmi, HDMI_MC_FLOWCTRL_FEED_THROUGH_OFF_CSC_BYPASS,
+                           HDMI_MC_FLOWCTRL);
 }
 
 static void hdmi_enable_audio_clk(struct dw_hdmi *hdmi)
-- 
Regards,

Laurent Pinchart