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drm: bridge: dw-hdmi: Fix konka tv yuv420 10bit probabilistic no signal

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konka tv should switch pattern after set to yuv420 10bit or
the TV might not recognize the signal.

Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
Change-Id: Ie8fba7e1ec3a4a2f2bff9943723c5862c55273d4
This commit is contained in:
Algea Cao
2023-02-23 14:43:50 +08:00
committed by Tao Huang
parent abb70c1b99
commit b28b6cd7f9
1 changed files with 46 additions and 0 deletions
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46
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
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@@ -2634,6 +2634,38 @@ static void hdmi_disable_overflow_interrupts(struct dw_hdmi *hdmi)
HDMI_IH_MUTE_FC_STAT2);
}
static void dw_hdmi_force_output_pattern(struct dw_hdmi *hdmi, const struct drm_display_mode *mode)
{
/* force output black */
if (hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) {
enum hdmi_quantization_range rgb_quant_range = drm_default_rgb_quant_range(mode);
if (hdmi->hdmi_data.quant_range == HDMI_QUANTIZATION_RANGE_FULL) {
hdmi_writeb(hdmi, 0x00, HDMI_FC_DBGTMDS2); /*R*/
hdmi_writeb(hdmi, 0x00, HDMI_FC_DBGTMDS1); /*G*/
hdmi_writeb(hdmi, 0x00, HDMI_FC_DBGTMDS0); /*B*/
} else if (hdmi->hdmi_data.quant_range == HDMI_QUANTIZATION_RANGE_LIMITED) {
hdmi_writeb(hdmi, 0x10, HDMI_FC_DBGTMDS2); /*R*/
hdmi_writeb(hdmi, 0x10, HDMI_FC_DBGTMDS1); /*G*/
hdmi_writeb(hdmi, 0x10, HDMI_FC_DBGTMDS0); /*B*/
} else if (hdmi->hdmi_data.quant_range == HDMI_QUANTIZATION_RANGE_DEFAULT) {
if (rgb_quant_range == HDMI_QUANTIZATION_RANGE_FULL) {
hdmi_writeb(hdmi, 0x00, HDMI_FC_DBGTMDS2); /*R*/
hdmi_writeb(hdmi, 0x00, HDMI_FC_DBGTMDS1); /*G*/
hdmi_writeb(hdmi, 0x00, HDMI_FC_DBGTMDS0); /*B*/
} else if (rgb_quant_range == HDMI_QUANTIZATION_RANGE_LIMITED) {
hdmi_writeb(hdmi, 0x10, HDMI_FC_DBGTMDS2); /*R*/
hdmi_writeb(hdmi, 0x10, HDMI_FC_DBGTMDS1); /*G*/
hdmi_writeb(hdmi, 0x10, HDMI_FC_DBGTMDS0); /*B*/
}
}
} else {
hdmi_writeb(hdmi, 0x80, HDMI_FC_DBGTMDS2); /*Cr*/
hdmi_writeb(hdmi, 0x10, HDMI_FC_DBGTMDS1); /*Y*/
hdmi_writeb(hdmi, 0x80, HDMI_FC_DBGTMDS0); /*Cb*/
}
}
static int dw_hdmi_setup(struct dw_hdmi *hdmi,
const struct drm_connector *connector,
const struct drm_display_mode *mode)
@@ -2723,6 +2755,8 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi,
(mode->flags & DRM_MODE_FLAG_DBLCLK) ? 1 : 0;
hdmi->hdmi_data.video_mode.mdataenablepolarity = true;
dw_hdmi_force_output_pattern(hdmi, mode);
/* HDMI Initialization Step B.1 */
hdmi_av_composer(hdmi, &connector->display_info, mode);
@@ -2770,6 +2804,16 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi,
dw_hdmi_clear_overflow(hdmi);
/*
* konka tv should switch pattern after set to yuv420 10bit or
* the TV might not recognize the signal.
*/
if (!hdmi->update) {
hdmi_writeb(hdmi, 1, HDMI_FC_DBGFORCE);
msleep(50);
hdmi_writeb(hdmi, 0, HDMI_FC_DBGFORCE);
}
return 0;
}
@@ -3182,6 +3226,8 @@ static int dw_hdmi_connector_atomic_check(struct drm_connector *connector,
vmode->mpixelclock);
if (hdmi_bus_fmt_is_yuv420(hdmi->hdmi_data.enc_out_bus_format))
vmode->mtmdsclock /= 2;
dw_hdmi_force_output_pattern(hdmi, mode);
}
if (check_hdr_color_change(old_state, new_state, hdmi) || hdmi->logo_plug_out ||