From: Wayne Lin <wayne.lin@xxxxxxx> [Why] MST relevant variables are maintained at drm side. As the result, we still have to call drm_dp_remove_payload_part2() to update the relevant values regardless the link is under mst mode or not. We used to have a workaround patch to tackle this: commit 3d8fcc6740c9 ("drm/amd/display: Extract temp drm mst deallocation wa into its own function") Now it's time to remove the workaround and adjust the flow. [How] During deallocate_mst_payload(), source actually doesn't send out ALLOCATE_PAYLOAD at the end as like the flow in allocate_mst_payload(). Call function dm_helpers_dp_mst_send_payload_allocation() at the end of deallocate_mst_payload() is a bit confusing. Separate dm_helpers_dp_mst_send_payload_allocation() into 2 functions. Have a new function dm_helpers_dp_mst_update_mst_mgr_for_deallocation() to replace dm_helpers_dp_mst_send_payload_allocation() for payload deallocation. Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Reviewed-by: Wenjing Liu <wenjing.liu@xxxxxxx> Acked-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx> Signed-off-by: Wayne Lin <wayne.lin@xxxxxxx> --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 17 --- .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 53 +++++---- drivers/gpu/drm/amd/display/dc/dc.h | 1 - drivers/gpu/drm/amd/display/dc/dm_helpers.h | 12 +- .../gpu/drm/amd/display/dc/link/link_dpms.c | 105 ++---------------- 5 files changed, 50 insertions(+), 138 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 08f274988c94..5f5205176298 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1716,23 +1716,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) /* TODO: Remove after DP2 receiver gets proper support of Cable ID feature */ adev->dm.dc->debug.ignore_cable_id = true; - /* TODO: There is a new drm mst change where the freedom of - * vc_next_start_slot update is revoked/moved into drm, instead of in - * driver. This forces us to make sure to get vc_next_start_slot updated - * in drm function each time without considering if mst_state is active - * or not. Otherwise, next time hotplug will give wrong start_slot - * number. We are implementing a temporary solution to even notify drm - * mst deallocation when link is no longer of MST type when uncommitting - * the stream so we will have more time to work on a proper solution. - * Ideally when dm_helpers_dp_mst_stop_top_mgr message is triggered, we - * should notify drm to do a complete "reset" of its states and stop - * calling further drm mst functions when link is no longer of an MST - * type. This could happen when we unplug an MST hubs/displays. When - * uncommit stream comes later after unplug, we should just reset - * hardware states only. - */ - adev->dm.dc->debug.temp_mst_deallocation_sequence = true; - if (adev->dm.dc->caps.dp_hdmi21_pcon_support) DRM_INFO("DP-HDMI FRL PCON supported\n"); 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 c7a29bb737e2..e44ba5c1c48e 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 @@ -333,15 +333,14 @@ enum act_return_status dm_helpers_dp_mst_poll_for_allocation_change_trigger( return ACT_SUCCESS; } -bool dm_helpers_dp_mst_send_payload_allocation( +void dm_helpers_dp_mst_send_payload_allocation( struct dc_context *ctx, - const struct dc_stream_state *stream, - bool enable) + const struct dc_stream_state *stream) { struct amdgpu_dm_connector *aconnector; struct drm_dp_mst_topology_state *mst_state; struct drm_dp_mst_topology_mgr *mst_mgr; - struct drm_dp_mst_atomic_payload *new_payload, old_payload; + struct drm_dp_mst_atomic_payload *new_payload; enum mst_progress_status set_flag = MST_ALLOCATE_NEW_PAYLOAD; enum mst_progress_status clr_flag = MST_CLEAR_ALLOCATED_PAYLOAD; int ret = 0; @@ -349,25 +348,13 @@ bool dm_helpers_dp_mst_send_payload_allocation( aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; if (!aconnector || !aconnector->mst_root) - return false; + return; mst_mgr = &aconnector->mst_root->mst_mgr; mst_state = to_drm_dp_mst_topology_state(mst_mgr->base.state); - new_payload = drm_atomic_get_mst_payload_state(mst_state, aconnector->mst_output_port); - if (!enable) { - set_flag = MST_CLEAR_ALLOCATED_PAYLOAD; - clr_flag = MST_ALLOCATE_NEW_PAYLOAD; - } - - if (enable) { - ret = drm_dp_add_payload_part2(mst_mgr, mst_state->base.state, new_payload); - } else { - dm_helpers_construct_old_payload(mst_mgr, mst_state, - new_payload, &old_payload); - drm_dp_remove_payload_part2(mst_mgr, mst_state, &old_payload, new_payload); - } + ret = drm_dp_add_payload_part2(mst_mgr, mst_state->base.state, new_payload); if (ret) { amdgpu_dm_set_mst_status(&aconnector->mst_status, @@ -378,10 +365,36 @@ bool dm_helpers_dp_mst_send_payload_allocation( amdgpu_dm_set_mst_status(&aconnector->mst_status, clr_flag, false); } - - return true; } +void dm_helpers_dp_mst_update_mst_mgr_for_deallocation( + struct dc_context *ctx, + const struct dc_stream_state *stream) +{ + struct amdgpu_dm_connector *aconnector; + struct drm_dp_mst_topology_state *mst_state; + struct drm_dp_mst_topology_mgr *mst_mgr; + struct drm_dp_mst_atomic_payload *new_payload, old_payload; + enum mst_progress_status set_flag = MST_CLEAR_ALLOCATED_PAYLOAD; + enum mst_progress_status clr_flag = MST_ALLOCATE_NEW_PAYLOAD; + + aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; + + if (!aconnector || !aconnector->mst_root) + return; + + mst_mgr = &aconnector->mst_root->mst_mgr; + mst_state = to_drm_dp_mst_topology_state(mst_mgr->base.state); + new_payload = drm_atomic_get_mst_payload_state(mst_state, aconnector->mst_output_port); + dm_helpers_construct_old_payload(mst_mgr, mst_state, + new_payload, &old_payload); + + drm_dp_remove_payload_part2(mst_mgr, mst_state, &old_payload, new_payload); + + amdgpu_dm_set_mst_status(&aconnector->mst_status, set_flag, true); + amdgpu_dm_set_mst_status(&aconnector->mst_status, clr_flag, false); + } + void dm_dtn_log_begin(struct dc_context *ctx, struct dc_log_buffer_ctx *log_ctx) { diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 85fa77d623f4..abaf23c1cedd 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -956,7 +956,6 @@ struct dc_debug_options { unsigned int min_prefetch_in_strobe_ns; bool disable_unbounded_requesting; bool dig_fifo_off_in_blank; - bool temp_mst_deallocation_sequence; bool override_dispclk_programming; bool otg_crc_db; bool disallow_dispclk_dppclk_ds; diff --git a/drivers/gpu/drm/amd/display/dc/dm_helpers.h b/drivers/gpu/drm/amd/display/dc/dm_helpers.h index 7ce9a5b6c33b..6d7a15dcf8a7 100644 --- a/drivers/gpu/drm/amd/display/dc/dm_helpers.h +++ b/drivers/gpu/drm/amd/display/dc/dm_helpers.h @@ -103,10 +103,16 @@ enum act_return_status dm_helpers_dp_mst_poll_for_allocation_change_trigger( /* * Sends ALLOCATE_PAYLOAD message. */ -bool dm_helpers_dp_mst_send_payload_allocation( +void dm_helpers_dp_mst_send_payload_allocation( struct dc_context *ctx, - const struct dc_stream_state *stream, - bool enable); + const struct dc_stream_state *stream); + +/* + * Update mst manager relevant variables + */ +void dm_helpers_dp_mst_update_mst_mgr_for_deallocation( + struct dc_context *ctx, + const struct dc_stream_state *stream); bool dm_helpers_dp_mst_start_top_mgr( struct dc_context *ctx, diff --git a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c index f8e01ca09d96..aa0a086aa7fc 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_dpms.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_dpms.c @@ -1247,86 +1247,6 @@ static void remove_stream_from_alloc_table( } } -static enum dc_status deallocate_mst_payload_with_temp_drm_wa( - struct pipe_ctx *pipe_ctx) -{ - struct dc_stream_state *stream = pipe_ctx->stream; - struct dc_link *link = stream->link; - struct dc_dp_mst_stream_allocation_table proposed_table = {0}; - struct fixed31_32 avg_time_slots_per_mtp = dc_fixpt_from_int(0); - int i; - bool mst_mode = (link->type == dc_connection_mst_branch); - /* adjust for drm changes*/ - const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res); - const struct dc_link_settings empty_link_settings = {0}; - DC_LOGGER_INIT(link->ctx->logger); - - if (link_hwss->ext.set_throttled_vcp_size) - link_hwss->ext.set_throttled_vcp_size(pipe_ctx, avg_time_slots_per_mtp); - if (link_hwss->ext.set_hblank_min_symbol_width) - link_hwss->ext.set_hblank_min_symbol_width(pipe_ctx, - &empty_link_settings, - avg_time_slots_per_mtp); - - if (dm_helpers_dp_mst_write_payload_allocation_table( - stream->ctx, - stream, - &proposed_table, - false)) - update_mst_stream_alloc_table( - link, - pipe_ctx->stream_res.stream_enc, - pipe_ctx->stream_res.hpo_dp_stream_enc, - &proposed_table); - else - DC_LOG_WARNING("Failed to update" - "MST allocation table for" - "pipe idx:%d\n", - pipe_ctx->pipe_idx); - - DC_LOG_MST("%s" - "stream_count: %d: ", - __func__, - link->mst_stream_alloc_table.stream_count); - - for (i = 0; i < MAX_CONTROLLER_NUM; i++) { - DC_LOG_MST("stream_enc[%d]: %p " - "stream[%d].hpo_dp_stream_enc: %p " - "stream[%d].vcp_id: %d " - "stream[%d].slot_count: %d\n", - i, - (void *) link->mst_stream_alloc_table.stream_allocations[i].stream_enc, - i, - (void *) link->mst_stream_alloc_table.stream_allocations[i].hpo_dp_stream_enc, - i, - link->mst_stream_alloc_table.stream_allocations[i].vcp_id, - i, - link->mst_stream_alloc_table.stream_allocations[i].slot_count); - } - - if (link_hwss->ext.update_stream_allocation_table == NULL || - link_dp_get_encoding_format(&link->cur_link_settings) == DP_UNKNOWN_ENCODING) { - DC_LOG_DEBUG("Unknown encoding format\n"); - return DC_ERROR_UNEXPECTED; - } - - link_hwss->ext.update_stream_allocation_table(link, &pipe_ctx->link_res, - &link->mst_stream_alloc_table); - - if (mst_mode) { - dm_helpers_dp_mst_poll_for_allocation_change_trigger( - stream->ctx, - stream); - } - - dm_helpers_dp_mst_send_payload_allocation( - stream->ctx, - stream, - false); - - return DC_OK; -} - static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx) { struct dc_stream_state *stream = pipe_ctx->stream; @@ -1339,9 +1259,6 @@ static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx) const struct dc_link_settings empty_link_settings = {0}; DC_LOGGER_INIT(link->ctx->logger); - if (link->dc->debug.temp_mst_deallocation_sequence) - return deallocate_mst_payload_with_temp_drm_wa(pipe_ctx); - /* deallocate_mst_payload is called before disable link. When mode or * disable/enable monitor, new stream is created which is not in link * stream[] yet. For this, payload is not allocated yet, so de-alloc @@ -1414,16 +1331,14 @@ static enum dc_status deallocate_mst_payload(struct pipe_ctx *pipe_ctx) link_hwss->ext.update_stream_allocation_table(link, &pipe_ctx->link_res, &link->mst_stream_alloc_table); - if (mst_mode) { + if (mst_mode) dm_helpers_dp_mst_poll_for_allocation_change_trigger( stream->ctx, stream); - dm_helpers_dp_mst_send_payload_allocation( - stream->ctx, - stream, - false); - } + dm_helpers_dp_mst_update_mst_mgr_for_deallocation( + stream->ctx, + stream); return DC_OK; } @@ -1504,12 +1419,10 @@ static enum dc_status allocate_mst_payload(struct pipe_ctx *pipe_ctx) stream->ctx, stream); - if (ret != ACT_LINK_LOST) { + if (ret != ACT_LINK_LOST) dm_helpers_dp_mst_send_payload_allocation( stream->ctx, - stream, - true); - } + stream); /* slot X.Y for only current stream */ pbn_per_slot = get_pbn_per_slot(stream); @@ -1769,8 +1682,7 @@ enum dc_status link_reduce_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t bw_in /* send ALLOCATE_PAYLOAD sideband message with updated pbn */ dm_helpers_dp_mst_send_payload_allocation( stream->ctx, - stream, - true); + stream); /* notify immediate branch device table update */ if (dm_helpers_dp_mst_write_payload_allocation_table( @@ -1899,8 +1811,7 @@ enum dc_status link_increase_mst_payload(struct pipe_ctx *pipe_ctx, uint32_t bw_ /* send ALLOCATE_PAYLOAD sideband message with updated pbn */ dm_helpers_dp_mst_send_payload_allocation( stream->ctx, - stream, - true); + stream); } /* increase throttled vcp size */ -- 2.42.0