From a7c841f7e795bac26123bfc7e442308dcb281961 Mon Sep 17 00:00:00 2001 From: Nicholas Kazlauskas Date: Tue, 14 May 2019 09:19:01 -0400 Subject: [PATCH 2553/2940] drm/amd/display: Copy stream updates onto streams [Why] Almost every function in DC that works with stream state expects that the current state on the stream is the one that it should be writing out. These functions are typically triggered by specifying a particular stream update - but the actual contents of the stream update itself are ignored, leaving it to the DM to actually update the stream state itself. The problem with doing this in DM is a matter of timing. On Linux most of this is incorrectly done in atomic check, when we actually want it to be done during atomic commit tail while access to DC is locked. To give an example, a commit requesting to modify color management state for DM could come in, be rejected, but still have modified the actual system state for the stream since it's shared memory. The next time color management gets programmed it'll use the rejected color management info - which might not even still be around if it's a custom transfer function. So a reasonable place to perform this is within DC itself and this is the model that's currently in use for surface updates. DC can even compare the current system state to the incoming surface update to determine update level, something that can't currnetly be done with the framework for stream updates. [How] Duplicate the framework used for surface updates for stream updates as well. Copy all the updates after checking the update type. Signed-off-by: Nicholas Kazlauskas Reviewed-by: Harry Wentland Acked-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/core/dc.c | 97 ++++++++++++++++++++++++ 1 file changed, 97 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 1b90796cb878..76f3707b7f03 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1706,6 +1706,101 @@ static void copy_surface_update_to_plane( *srf_update->coeff_reduction_factor; } +static void copy_stream_update_to_stream(struct dc *dc, + struct dc_state *context, + struct dc_stream_state *stream, + const struct dc_stream_update *update) +{ + if (update == NULL || stream == NULL) + return; + + if (update->src.height && update->src.width) + stream->src = update->src; + + if (update->dst.height && update->dst.width) + stream->dst = update->dst; + + if (update->out_transfer_func && + stream->out_transfer_func != update->out_transfer_func) { + stream->out_transfer_func->sdr_ref_white_level = + update->out_transfer_func->sdr_ref_white_level; + stream->out_transfer_func->tf = update->out_transfer_func->tf; + stream->out_transfer_func->type = + update->out_transfer_func->type; + memcpy(&stream->out_transfer_func->tf_pts, + &update->out_transfer_func->tf_pts, + sizeof(struct dc_transfer_func_distributed_points)); + } + + if (update->hdr_static_metadata) + stream->hdr_static_metadata = *update->hdr_static_metadata; + + if (update->abm_level) + stream->abm_level = *update->abm_level; + + if (update->periodic_interrupt0) + stream->periodic_interrupt0 = *update->periodic_interrupt0; + + if (update->periodic_interrupt1) + stream->periodic_interrupt1 = *update->periodic_interrupt1; + + if (update->gamut_remap) + stream->gamut_remap_matrix = *update->gamut_remap; + + /* Note: this being updated after mode set is currently not a use case + * however if it arises OCSC would need to be reprogrammed at the + * minimum + */ + if (update->output_color_space) + stream->output_color_space = *update->output_color_space; + + if (update->output_csc_transform) + stream->csc_color_matrix = *update->output_csc_transform; + + if (update->vrr_infopacket) + stream->vrr_infopacket = *update->vrr_infopacket; + + if (update->dpms_off) + stream->dpms_off = *update->dpms_off; + + if (update->vsc_infopacket) + stream->vsc_infopacket = *update->vsc_infopacket; + + if (update->vsp_infopacket) + stream->vsp_infopacket = *update->vsp_infopacket; + + if (update->dither_option) + stream->dither_option = *update->dither_option; +#if defined(CONFIG_DRM_AMD_DC_DCN2_0) + /* update current stream with writeback info */ + if (update->wb_update) { + int i; + + stream->num_wb_info = update->wb_update->num_wb_info; + ASSERT(stream->num_wb_info <= MAX_DWB_PIPES); + for (i = 0; i < stream->num_wb_info; i++) + stream->writeback_info[i] = + update->wb_update->writeback_info[i]; + } +#endif +#if defined(CONFIG_DRM_AMD_DC_DSC_SUPPORT) + if (update->dsc_config) { + struct dc_dsc_config old_dsc_cfg = stream->timing.dsc_cfg; + uint32_t old_dsc_enabled = stream->timing.flags.DSC; + uint32_t enable_dsc = (update->dsc_config->num_slices_h != 0 && + update->dsc_config->num_slices_v != 0); + + stream->timing.dsc_cfg = *update->dsc_config; + stream->timing.flags.DSC = enable_dsc; + if (!dc->res_pool->funcs->validate_bandwidth(dc, context, + true)) { + stream->timing.dsc_cfg = old_dsc_cfg; + stream->timing.flags.DSC = old_dsc_enabled; + } + } +#endif +} + static void commit_planes_do_stream_update(struct dc *dc, struct dc_stream_state *stream, struct dc_stream_update *stream_update, @@ -2033,6 +2128,8 @@ void dc_commit_updates_for_stream(struct dc *dc, } } + copy_stream_update_to_stream(dc, context, stream, stream_update); + commit_planes_for_stream( dc, srf_updates, -- 2.17.1