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drm/amd/display: minor restructuring of pbn calculation functions
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com> Acked-by: Bindu Ramamurthy <bindu.r@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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aceeeea38a
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786b406174
1 changed files with 10 additions and 4 deletions
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@ -2818,15 +2818,12 @@ static struct fixed31_32 get_pbn_per_slot(struct dc_stream_state *stream)
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return dc_fixpt_div_int(mbytes_per_sec, 54);
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}
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static struct fixed31_32 get_pbn_from_timing(struct pipe_ctx *pipe_ctx)
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static struct fixed31_32 get_pbn_from_bw_in_kbps(uint64_t kbps)
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{
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uint64_t kbps;
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struct fixed31_32 peak_kbps;
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uint32_t numerator;
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uint32_t denominator;
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kbps = dc_bandwidth_in_kbps_from_timing(&pipe_ctx->stream->timing);
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/*
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* margin 5300ppm + 300ppm ~ 0.6% as per spec, factor is 1.006
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* The unit of 54/64Mbytes/sec is an arbitrary unit chosen based on
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@ -2846,6 +2843,14 @@ static struct fixed31_32 get_pbn_from_timing(struct pipe_ctx *pipe_ctx)
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return peak_kbps;
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}
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static struct fixed31_32 get_pbn_from_timing(struct pipe_ctx *pipe_ctx)
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{
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uint64_t kbps;
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kbps = dc_bandwidth_in_kbps_from_timing(&pipe_ctx->stream->timing);
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return get_pbn_from_bw_in_kbps(kbps);
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}
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static void update_mst_stream_alloc_table(
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struct dc_link *link,
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struct stream_encoder *stream_enc,
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@ -2873,6 +2878,7 @@ static void update_mst_stream_alloc_table(
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proposed_table->stream_allocations[i].vcp_id) {
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work_table[i] = *dc_alloc;
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work_table[i].slot_count = proposed_table->stream_allocations[i].slot_count;
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break; /* exit j loop */
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}
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}
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