samsung-sm8650/android_kernel_samsung_sm8650-modules
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disp: msm: sde: fix traffic shaper prefill calculations

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This change fixes traffic shaper prefill calculations
for prefill count and bytes per clock as per hardware
recommendations in the HPG which are calcualted as below:

ts_ count = ts_end*19200000/fps/(vtotal)

ts_bytes_per_clk = ceil(h_src*v_src*bpp*fps/
			19200000*amortized_pref_rate)

Change-Id: Icc2348421a2124daa3b0056f46d7a6a45021381b
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>
This commit is contained in:
Yashwanth
2021-10-27 13:23:33 +05:30
förälder ce1eceafb0
incheckning 50aa3cd210
1 ändrade filer med 3 tillägg och 6 borttagningar
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9
msm/sde/sde_hw_sspp.c
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@@ -1082,17 +1082,14 @@ static void sde_hw_sspp_setup_ts_prefill(struct sde_hw_pipe *ctx,
}
if (cfg->time) {
u64 temp = DIV_ROUND_UP_ULL(TS_CLK * 1000000ULL, cfg->time);
ts_bytes = temp * cfg->size;
ts_count = DIV_ROUND_UP_ULL(TS_CLK * cfg->time, 1000000ULL);
ts_bytes = DIV_ROUND_UP_ULL(cfg->size, ts_count);
if (ts_bytes > SSPP_TRAFFIC_SHAPER_BPC_MAX)
ts_bytes = SSPP_TRAFFIC_SHAPER_BPC_MAX;
}
if (ts_bytes) {
ts_count = DIV_ROUND_UP_ULL(cfg->size, ts_bytes);
if (ts_count)
ts_bytes |= BIT(31) | BIT(27);
}
SDE_REG_WRITE(&ctx->hw, ts_offset, ts_bytes);
SDE_REG_WRITE(&ctx->hw, ts_prefill_offset, ts_count);