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drm/amd/display: Improve HDMI info retrieval

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[WHY & HOW]
Make a dedicated function to read HDMI-related monitor info, including
monitor's SCDC support.

Fixes: 3471b9a31c ("drm/amd/display: Rework HDMI data channel reads")
Suggested-by: Fangzhi Zuo <jerry.zuo@amd.com>
Reviewed-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c78e31bcf5)
This commit is contained in:
Ivan Lipski
2025-11-07 16:50:37 -05:00
committed by Alex Deucher
parent cf32644963
commit 2e1da46091
2 changed files with 11 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
View File

@@ -1063,6 +1063,9 @@ int amdgpu_dm_update_plane_color_mgmt(struct dm_crtc_state *crtc,
void amdgpu_dm_update_connector_after_detect(
struct amdgpu_dm_connector *aconnector);
void populate_hdmi_info_from_connector(struct drm_hdmi_info *info,
struct dc_edid_caps *edid_caps);
extern const struct drm_encoder_helper_funcs amdgpu_dm_encoder_helper_funcs;
int amdgpu_dm_process_dmub_aux_transfer_sync(struct dc_context *ctx, unsigned int link_index,

8
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
View File

@@ -139,6 +139,9 @@ enum dc_edid_status dm_helpers_parse_edid_caps(
edid_caps->edid_hdmi = connector->display_info.is_hdmi;
if (edid_caps->edid_hdmi)
populate_hdmi_info_from_connector(&connector->display_info.hdmi, edid_caps);
apply_edid_quirks(dev, edid_buf, edid_caps);
sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads);
@@ -990,6 +993,11 @@ dm_helpers_read_acpi_edid(struct amdgpu_dm_connector *aconnector)
return drm_edid_read_custom(connector, dm_helpers_probe_acpi_edid, connector);
}
void populate_hdmi_info_from_connector(struct drm_hdmi_info *hdmi, struct dc_edid_caps *edid_caps)
{
edid_caps->scdc_present = hdmi->scdc.supported;
}
enum dc_edid_status dm_helpers_read_local_edid(
struct dc_context *ctx,
struct dc_link *link,