From eca47656c8320d1b1d2f72859107709743a4dcf7 Mon Sep 17 00:00:00 2001 From: jsg Date: Fri, 4 Aug 2023 08:44:44 +0000 Subject: [PATCH] drm/amd/display: fix dcn315 single stream crb allocation From Dmytro Laktyushkin 8f0582fb6d0edf3581b1ece0cc186ab82fb083b4 in linux-6.1.y/6.1.43 49f26218c344741cb3eaa740b1e44e960551a87f in mainline linux --- .../drm/amd/display/dc/dcn315/dcn315_resource.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/sys/dev/pci/drm/amd/display/dc/dcn315/dcn315_resource.c b/sys/dev/pci/drm/amd/display/dc/dcn315/dcn315_resource.c index 88c4a378daa..b9b1e5ac4f5 100644 --- a/sys/dev/pci/drm/amd/display/dc/dcn315/dcn315_resource.c +++ b/sys/dev/pci/drm/amd/display/dc/dcn315/dcn315_resource.c @@ -1662,6 +1662,10 @@ static bool allow_pixel_rate_crb(struct dc *dc, struct dc_state *context) int i; struct resource_context *res_ctx = &context->res_ctx; + /*Don't apply for single stream*/ + if (context->stream_count < 2) + return false; + for (i = 0; i < dc->res_pool->pipe_count; i++) { if (!res_ctx->pipe_ctx[i].stream) continue; @@ -1749,19 +1753,23 @@ static int dcn315_populate_dml_pipes_from_context( pipe_cnt++; } - /* Spread remaining unreserved crb evenly among all pipes, use default policy if not enough det or single pipe */ + /* Spread remaining unreserved crb evenly among all pipes*/ if (pixel_rate_crb) { for (i = 0, pipe_cnt = 0, crb_idx = 0; i < dc->res_pool->pipe_count; i++) { pipe = &res_ctx->pipe_ctx[i]; if (!pipe->stream) continue; + /* Do not use asymetric crb if not enough for pstate support */ + if (remaining_det_segs < 0) { + pipes[pipe_cnt].pipe.src.det_size_override = 0; + continue; + } + if (!pipe->top_pipe && !pipe->prev_odm_pipe) { bool split_required = pipe->stream->timing.pix_clk_100hz >= dcn_get_max_non_odm_pix_rate_100hz(&dc->dml.soc) || (pipe->plane_state && pipe->plane_state->src_rect.width > 5120); - if (remaining_det_segs < 0 || crb_pipes == 1) - pipes[pipe_cnt].pipe.src.det_size_override = 0; if (remaining_det_segs > MIN_RESERVED_DET_SEGS) pipes[pipe_cnt].pipe.src.det_size_override += (remaining_det_segs - MIN_RESERVED_DET_SEGS) / crb_pipes + (crb_idx < (remaining_det_segs - MIN_RESERVED_DET_SEGS) % crb_pipes ? 1 : 0); @@ -1777,6 +1785,7 @@ static int dcn315_populate_dml_pipes_from_context( } /* Convert segments into size for DML use */ pipes[pipe_cnt].pipe.src.det_size_override *= DCN3_15_CRB_SEGMENT_SIZE_KB; + crb_idx++; } pipe_cnt++; -- 2.20.1