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drm/amd/display: Add HDR workaround for specific eDP
[WHY & HOW] Some eDP panels suffer from flicking when HDR is enabled in KDE. This quirk works around it by skipping VSC that is incompatible with eDP panels. Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3151 Cc: Mario Limonciello <mario.limonciello@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -6735,12 +6735,21 @@ create_stream_for_sink(struct drm_connector *connector,
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if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT ||
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stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST ||
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stream->signal == SIGNAL_TYPE_EDP) {
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const struct dc_edid_caps *edid_caps;
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unsigned int disable_colorimetry = 0;
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if (aconnector->dc_sink) {
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edid_caps = &aconnector->dc_sink->edid_caps;
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disable_colorimetry = edid_caps->panel_patch.disable_colorimetry;
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}
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//
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// should decide stream support vsc sdp colorimetry capability
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// before building vsc info packet
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//
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stream->use_vsc_sdp_for_colorimetry = stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 &&
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stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED;
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stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED &&
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!disable_colorimetry;
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if (stream->out_transfer_func.tf == TRANSFER_FUNCTION_GAMMA22)
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tf = TRANSFER_FUNC_GAMMA_22;
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@ -73,6 +73,10 @@ static void apply_edid_quirks(struct edid *edid, struct dc_edid_caps *edid_caps)
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DRM_DEBUG_DRIVER("Clearing DPCD 0x317 on monitor with panel id %X\n", panel_id);
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edid_caps->panel_patch.remove_sink_ext_caps = true;
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break;
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case drm_edid_encode_panel_id('S', 'D', 'C', 0x4154):
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DRM_DEBUG_DRIVER("Disabling VSC on monitor with panel id %X\n", panel_id);
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edid_caps->panel_patch.disable_colorimetry = true;
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break;
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default:
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return;
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}
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@ -178,6 +178,7 @@ struct dc_panel_patch {
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unsigned int skip_avmute;
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unsigned int mst_start_top_delay;
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unsigned int remove_sink_ext_caps;
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unsigned int disable_colorimetry;
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uint8_t blankstream_before_otg_off;
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};
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