drm/amd/display: minor restructuring of pbn calculation functions (786b4061) · Commits · 戴 / test

drivers/gpu/drm/amd/display/dc/core/dc_link.c

+10 −4

Original line number	Diff line number	Diff line
		@@ -2818,15 +2818,12 @@ static struct fixed31_32 get_pbn_per_slot(struct dc_stream_state *stream)
		return dc_fixpt_div_int(mbytes_per_sec, 54);
		}

		static struct fixed31_32 get_pbn_from_timing(struct pipe_ctx *pipe_ctx)
		static struct fixed31_32 get_pbn_from_bw_in_kbps(uint64_t kbps)
		{
		uint64_t kbps;
		struct fixed31_32 peak_kbps;
		uint32_t numerator;
		uint32_t denominator;

		kbps = dc_bandwidth_in_kbps_from_timing(&pipe_ctx->stream->timing);

		/*
		* margin 5300ppm + 300ppm ~ 0.6% as per spec, factor is 1.006
		* The unit of 54/64Mbytes/sec is an arbitrary unit chosen based on
		@@ -2846,6 +2843,14 @@ static struct fixed31_32 get_pbn_from_timing(struct pipe_ctx *pipe_ctx)
		return peak_kbps;
		}

		static struct fixed31_32 get_pbn_from_timing(struct pipe_ctx *pipe_ctx)
		{
		uint64_t kbps;

		kbps = dc_bandwidth_in_kbps_from_timing(&pipe_ctx->stream->timing);
		return get_pbn_from_bw_in_kbps(kbps);
		}

		static void update_mst_stream_alloc_table(
		struct dc_link *link,
		struct stream_encoder *stream_enc,
		@@ -2873,6 +2878,7 @@ static void update_mst_stream_alloc_table(
		proposed_table->stream_allocations[i].vcp_id) {

		work_table[i] = *dc_alloc;
		work_table[i].slot_count = proposed_table->stream_allocations[i].slot_count;
		break; /* exit j loop */
		}
		}