drm/amd/display: Fix sending VSC (+ colorimetry) packets for DP/eDP displays without PSR

commit 202260f64519e591b5cd99626e441b6559f571a3 upstream.

The check for sending the vsc infopacket to the display was gated behind
PSR (Panel Self Refresh) being enabled.

The vsc infopacket also contains the colorimetry (specifically the
container color gamut) information for the stream on modern DP.

PSR is typically only supported on mobile phone eDP displays, thus this
was not getting sent for typical desktop monitors or TV screens.

This functionality is needed for proper HDR10 functionality on DP as it
wants BT2020 RGB/YCbCr for the container color space.

Cc: stable@vger.kernel.org
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Xaver Hugl <xaver.hugl@gmail.com>
Cc: Melissa Wen <mwen@igalia.com>
Fixes: 15f9dfd545a1 ("drm/amd/display: Register Colorspace property for DP and HDMI")
Tested-by: Simon Berz <simon@berz.me>
Tested-by: Xaver Hugl <xaver.hugl@kde.org>
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 5365ba2..5084833 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6139,8 +6139,9 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
 
        if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A)
                mod_build_hf_vsif_infopacket(stream, &stream->vsp_infopacket);
-
-       if (stream->link->psr_settings.psr_feature_enabled || stream->link->replay_settings.replay_feature_enabled) {
+       else if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT ||
+                        stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST ||
+                        stream->signal == SIGNAL_TYPE_EDP) {
                //
                // should decide stream support vsc sdp colorimetry capability
                // before building vsc info packet
@@ -6156,8 +6157,9 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
                if (stream->out_transfer_func->tf == TRANSFER_FUNCTION_GAMMA22)
                        tf = TRANSFER_FUNC_GAMMA_22;
                mod_build_vsc_infopacket(stream, &stream->vsc_infopacket, stream->output_color_space, tf);
-               aconnector->psr_skip_count = AMDGPU_DM_PSR_ENTRY_DELAY;
 
+               if (stream->link->psr_settings.psr_feature_enabled)
+                       aconnector->psr_skip_count = AMDGPU_DM_PSR_ENTRY_DELAY;
        }
 finish:
        dc_sink_release(sink);

diff --git a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
index 84f9b41..738ee76 100644 (file)
--- a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
+++ b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
@@ -147,12 +147,15 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream,
        }
 
        /* VSC packet set to 4 for PSR-SU, or 2 for PSR1 */
-       if (stream->link->psr_settings.psr_version == DC_PSR_VERSION_SU_1)
-               vsc_packet_revision = vsc_packet_rev4;
-       else if (stream->link->replay_settings.config.replay_supported)
+       if (stream->link->psr_settings.psr_feature_enabled) {
+               if (stream->link->psr_settings.psr_version == DC_PSR_VERSION_SU_1)
+                       vsc_packet_revision = vsc_packet_rev4;
+               else if (stream->link->psr_settings.psr_version == DC_PSR_VERSION_1)
+                       vsc_packet_revision = vsc_packet_rev2;
+       }
+
+       if (stream->link->replay_settings.config.replay_supported)
                vsc_packet_revision = vsc_packet_rev4;
-       else if (stream->link->psr_settings.psr_version == DC_PSR_VERSION_1)
-               vsc_packet_revision = vsc_packet_rev2;
 
        /* Update to revision 5 for extended colorimetry support */
        if (stream->use_vsc_sdp_for_colorimetry)