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drm/amd/display: minor restructuring of pbn calculation functions

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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>
This commit is contained in:
Wenjing Liu 2020-10-06 16:22:40 -04:00 committed by Alex Deucher
parent aceeeea38a
commit 786b406174
1 changed files with 10 additions and 4 deletions
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14
drivers/gpu/drm/amd/display/dc/core/dc_link.c
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@ -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 */
}
}