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drm/amdgpu: add DisplayPort CEC-Tunneling-over-AUX support 

Add DisplayPort CEC-Tunneling-over-AUX support to amdgpu.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/de9586bb-151e-bae9-b8e3-14db107a60df@xs4all.nl
hifive-unleashed-5.1
Hans Verkuil 2018-08-27 10:08:18 +02:00
parent 46094b2bae
commit e86e894751
2 changed files with 10 additions and 1 deletions
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9
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -896,6 +896,7 @@ amdgpu_dm_update_connector_after_detect(struct amdgpu_dm_connector *aconnector)
aconnector->dc_sink = sink;
if (sink->dc_edid.length == 0) {
aconnector->edid = NULL;
drm_dp_cec_unset_edid(&aconnector->dm_dp_aux.aux);
} else {
aconnector->edid =
(struct edid *) sink->dc_edid.raw_edid;
@ -903,10 +904,13 @@ amdgpu_dm_update_connector_after_detect(struct amdgpu_dm_connector *aconnector)
drm_connector_update_edid_property(connector,
aconnector->edid);
drm_dp_cec_set_edid(&aconnector->dm_dp_aux.aux,
aconnector->edid);
}
amdgpu_dm_add_sink_to_freesync_module(connector, aconnector->edid);
} else {
drm_dp_cec_unset_edid(&aconnector->dm_dp_aux.aux);
amdgpu_dm_remove_sink_from_freesync_module(connector);
drm_connector_update_edid_property(connector, NULL);
aconnector->num_modes = 0;
@ -1061,8 +1065,10 @@ static void handle_hpd_rx_irq(void *param)
(dc_link->type == dc_connection_mst_branch))
dm_handle_hpd_rx_irq(aconnector);
if (dc_link->type != dc_connection_mst_branch)
if (dc_link->type != dc_connection_mst_branch) {
drm_dp_cec_irq(&aconnector->dm_dp_aux.aux);
mutex_unlock(&aconnector->hpd_lock);
}
}
static void register_hpd_handlers(struct amdgpu_device *adev)
@ -2731,6 +2737,7 @@ static void amdgpu_dm_connector_destroy(struct drm_connector *connector)
dm->backlight_dev = NULL;
}
#endif
drm_dp_cec_unregister_connector(&aconnector->dm_dp_aux.aux);
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
kfree(connector);

2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
View File

@ -496,6 +496,8 @@ void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
drm_dp_cec_register_connector(&aconnector->dm_dp_aux.aux,
aconnector->base.name, dm->adev->dev);
aconnector->mst_mgr.cbs = &dm_mst_cbs;
drm_dp_mst_topology_mgr_init(
&aconnector->mst_mgr,