drm/amd/display: Revert "drm/amd/display: turn DPMS off on connector unplug"

This reverts commit 3c4d55c9b9becedd8d31a7c96783a364533713ab.

Revert the commit because:
- It's incomplete of the function dm_set_dpms_off() for mst case.  For
  stream sinks whithin the same mst topology, they share the same dc_link.
  dm_set_dpms_off() tries to update one mst stream only which is
  incomplete.
- Setting dpms off should be triggered by usermode. Besdies, it seems
  usermode does release relevant resource for mst & non-mst case when
  unplug connecotr now.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 6c32889..986aeaf 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2583,33 +2583,6 @@ cleanup:
        return;
 }
 
-static void dm_set_dpms_off(struct dc_link *link)
-{
-       struct dc_stream_state *stream_state;
-       struct amdgpu_dm_connector *aconnector = link->priv;
-       struct amdgpu_device *adev = drm_to_adev(aconnector->base.dev);
-       struct dc_stream_update stream_update;
-       bool dpms_off = true;
-
-       memset(&stream_update, 0, sizeof(stream_update));
-       stream_update.dpms_off = &dpms_off;
-
-       mutex_lock(&adev->dm.dc_lock);
-       stream_state = dc_stream_find_from_link(link);
-
-       if (stream_state == NULL) {
-               DRM_DEBUG_DRIVER("Error finding stream state associated with link!\n");
-               mutex_unlock(&adev->dm.dc_lock);
-               return;
-       }
-
-       stream_update.stream = stream_state;
-       dc_commit_updates_for_stream(stream_state->ctx->dc, NULL, 0,
-                                    stream_state, &stream_update,
-                                    stream_state->ctx->dc->current_state);
-       mutex_unlock(&adev->dm.dc_lock);
-}
-
 static int dm_resume(void *handle)
 {
        struct amdgpu_device *adev = handle;
@@ -3096,10 +3069,6 @@ static void handle_hpd_irq_helper(struct amdgpu_dm_connector *aconnector)
                        drm_kms_helper_connector_hotplug_event(connector);
 
        } else if (dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD)) {
-               if (new_connection_type == dc_connection_none &&
-                   aconnector->dc_link->type == dc_connection_none)
-                       dm_set_dpms_off(aconnector->dc_link);
-
                amdgpu_dm_update_connector_after_detect(aconnector);
 
                drm_modeset_lock_all(dev);

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 48a14a5..146fd4b 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -3325,19 +3325,6 @@ struct dc_stream_state *dc_get_stream_at_index(struct dc *dc, uint8_t i)
        return NULL;
 }
 
-struct dc_stream_state *dc_stream_find_from_link(const struct dc_link *link)
-{
-       uint8_t i;
-       struct dc_context *ctx = link->ctx;
-
-       for (i = 0; i < ctx->dc->current_state->stream_count; i++) {
-               if (ctx->dc->current_state->streams[i]->link == link)
-                       return ctx->dc->current_state->streams[i];
-       }
-
-       return NULL;
-}
-
 enum dc_irq_source dc_interrupt_to_irq_source(
                struct dc *dc,
                uint32_t src_id,

diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index 5a894c1..6f79327 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -351,7 +351,6 @@ void dc_stream_log(const struct dc *dc, const struct dc_stream_state *stream);
 
 uint8_t dc_get_current_stream_count(struct dc *dc);
 struct dc_stream_state *dc_get_stream_at_index(struct dc *dc, uint8_t i);
-struct dc_stream_state *dc_stream_find_from_link(const struct dc_link *link);
 
 /*
  * Return the current frame counter.