On 2023-09-05 13:13, Alex Hung wrote:
> [WHY]
> edid_override and drm_edid_override_connector_update, according to drm
> documentation, should not be referred outside drm_edid.
>
> [HOW]
> Remove and replace them accordingly.
>
> Signed-off-by: Alex Hung <alex.h...@amd.com>
> ---
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 23 ++-----------------
> 1 file changed, 2 insertions(+), 21 deletions(-)
>
> 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 1bb1a394f55f..f6a255773242 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -6372,15 +6372,12 @@ amdgpu_dm_connector_late_register(struct
> drm_connector *connector)
> static void amdgpu_dm_connector_funcs_force(struct drm_connector *connector)
> {
> struct amdgpu_dm_connector *aconnector =
> to_amdgpu_dm_connector(connector);
> + struct amdgpu_connector *amdgpu_connector =
> to_amdgpu_connector(connector);
> struct dc_link *dc_link = aconnector->dc_link;
> struct dc_sink *dc_em_sink = aconnector->dc_em_sink;
> struct edid *edid;
>
> - if (!connector->edid_override)
> - return;
> -
> - drm_edid_override_connector_update(&aconnector->base);
> - edid = aconnector->base.edid_blob_ptr->data;
> + edid = drm_get_edid(connector, &amdgpu_connector->ddc_bus->aux.ddc);
Looks like we only call this in the case where a connector is forced, so
drm_get_edid will never try to read the edid from the ddc but always gives
us the override_edid. Please spell that out in the commit description so
anyone else looking at the patch doesn't have to trace it themselves.
> aconnector->edid = edid;
>
> /* Update emulated (virtual) sink's EDID */
> @@ -6421,22 +6418,6 @@ static void create_eml_sink(struct amdgpu_dm_connector
> *aconnector)
> };
> struct edid *edid;
>
> - if (!aconnector->base.edid_blob_ptr) {
Can edid_blob_ptr never be NULL?
Harry
> - /* if connector->edid_override valid, pass
> - * it to edid_override to edid_blob_ptr
> - */
> -
> - drm_edid_override_connector_update(&aconnector->base);
> -
> - if (!aconnector->base.edid_blob_ptr) {
> - DRM_ERROR("No EDID firmware found on connector: %s
> ,forcing to OFF!\n",
> - aconnector->base.name);
> -
> - aconnector->base.force = DRM_FORCE_OFF;
> - return;
> - }
> - }
> -
> edid = (struct edid *) aconnector->base.edid_blob_ptr->data;
>
> aconnector->edid = edid;
