VESA vendor header from DisplayID spec may contain fixed bit per pixel
rate, it should be respected by drm driver
Signed-off-by: Yaroslav Bolyukin <i...@lach.pw>
Reviewed-by: Wayne Lin <wayne....@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 2 ++
drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 2 ++
drivers/gpu/drm/amd/display/dc/dc_types.h | 3 +++
3 files changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index 6fdc2027c2b4..dba720d5df4c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -89,6 +89,8 @@ enum dc_edid_status dm_helpers_parse_edid_caps(
edid_caps->edid_hdmi = connector->display_info.is_hdmi;
+ edid_caps->dsc_fixed_bits_per_pixel_x16 =
connector->display_info.dp_dsc_bpp;
+
sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads);
if (sad_count <= 0)
return result;
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index 72b261ad9587..a82362417379 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -103,6 +103,8 @@ static bool dc_stream_construct(struct dc_stream_state
*stream,
/* EDID CAP translation for HDMI 2.0 */
stream->timing.flags.LTE_340MCSC_SCRAMBLE =
dc_sink_data->edid_caps.lte_340mcsc_scramble;
+ stream->timing.dsc_fixed_bits_per_pixel_x16 =
+ dc_sink_data->edid_caps.dsc_fixed_bits_per_pixel_x16;
memset(&stream->timing.dsc_cfg, 0, sizeof(stream->timing.dsc_cfg));
stream->timing.dsc_cfg.num_slices_h = 0;
diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h
b/drivers/gpu/drm/amd/display/dc/dc_types.h
index 27d0242d6cbd..22fedf4c7547 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -228,6 +228,9 @@ struct dc_edid_caps {
bool edid_hdmi;
bool hdr_supported;
+ /* DisplayPort caps */
+ uint32_t dsc_fixed_bits_per_pixel_x16;
+
struct dc_panel_patch panel_patch;
};
--
2.39.1
