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drm/amd/display: Rebuild InfoFrames on output color space changes

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resource_build_info_frame() derives colorimetry and RGB quantization from
stream->output_color_space. A Broadcast RGB-only atomic commit updates
that field and reprograms the output CSC, but none of the InfoFrame update
predicates include output_color_space. The sink can therefore retain the
previous AVI InfoFrame range while the source starts transmitting a
different pixel range.

Treat an output color space change as an InfoFrame change in update
classification and in both stream programming paths.

Hardware testing on an HDMI 2.1 television confirmed that its automatic
black-level selection follows Full to Limited and Limited to Full
transitions in SDR, HDR, and HDR with VRR active, without a modeset or
visible link blank.

Fixes: 6eb4c13a38 ("drm/amd/display: Support "Broadcast RGB" drm property")
Signed-off-by: Satyajit Roy <sroy14@alum.utk.edu>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit d6faca79f5720893843e649e70aeb19147ee0578)
Cc: stable@vger.kernel.org
This commit is contained in:
Satyajit Roy 2026-08-30 03:52:13 +00:00 committed by Alex Deucher
parent 7fca7acd60
commit 8cfd9e22eb
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/dc/core/dc.c
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@ -3198,6 +3198,7 @@ static struct dc_update_descriptor check_update_surfaces_for_stream(
}
if ((stream_update->hdr_static_metadata && !stream_update->stream->use_dynamic_meta) ||
stream_update->output_color_space ||
stream_update->vrr_infopacket ||
stream_update->vsc_infopacket ||
stream_update->vsp_infopacket ||
@ -4188,6 +4189,7 @@ static void commit_planes_do_stream_update_sequence(struct dc *dc,
hwss_add_setup_periodic_interrupt(&seq_state, dc, pipe_ctx);
if ((stream_update->hdr_static_metadata && !stream->use_dynamic_meta) ||
stream_update->output_color_space ||
stream_update->vrr_infopacket ||
stream_update->vsc_infopacket ||
stream_update->vsp_infopacket ||
@ -4370,6 +4372,7 @@ static void commit_planes_do_stream_update(struct dc *dc,
dc->hwss.setup_periodic_interrupt(dc, pipe_ctx);
if ((stream_update->hdr_static_metadata && !stream->use_dynamic_meta) ||
stream_update->output_color_space ||
stream_update->vrr_infopacket ||
stream_update->vsc_infopacket ||
stream_update->vsp_infopacket ||