Commit c6cae702 authored by Jonas Karlman's avatar Jonas Karlman Committed by Neil Armstrong
Browse files

drm/bridge: dw-hdmi: set mtmdsclock for deep color 



Configure the correct mtmdsclock for deep colors to prepare support
for 10, 12 & 16bit output.

Signed-off-by: default avatarJonas Karlman <jonas@kwiboo.se>
Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: default avatarJernej Škrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200304104052.17196-2-narmstrong@baylibre.com
parent bc1a4130

drivers/gpu/drm/bridge/synopsys/dw-hdmi.c

+20 −1
Original line number Diff line number Diff line
@@ -1814,13 +1814,32 @@ static void hdmi_av_composer(struct dw_hdmi *hdmi, 
	int hblank, vblank, h_de_hs, v_de_vs, hsync_len, vsync_len;

	unsigned int vdisplay, hdisplay;



	vmode->mtmdsclock = vmode->mpixelclock = mode->clock * 1000;

	vmode->mpixelclock = mode->clock * 1000;



	dev_dbg(hdmi->dev, "final pixclk = %d\n", vmode->mpixelclock);



	vmode->mtmdsclock = vmode->mpixelclock;



	if (!hdmi_bus_fmt_is_yuv422(hdmi->hdmi_data.enc_out_bus_format)) {

		switch (hdmi_bus_fmt_color_depth(

				hdmi->hdmi_data.enc_out_bus_format)) {

		case 16:

			vmode->mtmdsclock = vmode->mpixelclock * 2;

			break;

		case 12:

			vmode->mtmdsclock = vmode->mpixelclock * 3 / 2;

			break;

		case 10:

			vmode->mtmdsclock = vmode->mpixelclock * 5 / 4;

			break;

		}

	}



	if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format))

		vmode->mtmdsclock /= 2;



	dev_dbg(hdmi->dev, "final tmdsclock = %d\n", vmode->mtmdsclock);



	/* Set up HDMI_FC_INVIDCONF */

	inv_val = (hdmi->hdmi_data.hdcp_enable ||

		   (dw_hdmi_support_scdc(hdmi) &&