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Merge "disp: msm: sde: remove idle time from Qsync threshold calculation"

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qctecmdr
2021-04-27 16:24:18 -07:00
committed by Gerrit - the friendly Code Review server
parent b0ea2d882f 86d293e6cc
commit e7ead5ab59
1 changed files with 11 additions and 15 deletions
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26
msm/sde/sde_encoder_phys_cmd.c
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@@ -908,8 +908,6 @@ static int _get_tearcheck_threshold(struct sde_encoder_phys *phys_enc)
u32 default_time_ns;
u32 extra_time_ns;
u32 default_line_time_ns;
u32 idle_time_ns = 0;
u32 transfer_time_us = 0;
if (phys_enc->parent_ops.get_qsync_fps)
phys_enc->parent_ops.get_qsync_fps(
@@ -932,26 +930,24 @@ static int _get_tearcheck_threshold(struct sde_encoder_phys *phys_enc)
/* Calculate the number of extra lines*/
slow_time_ns = DIV_ROUND_UP(1000000000, qsync_min_fps);
default_time_ns = DIV_ROUND_UP(1000000000, default_fps);
sde_encoder_get_transfer_time(phys_enc->parent,
&transfer_time_us);
if (transfer_time_us)
idle_time_ns = default_time_ns -
(1000 * transfer_time_us);
extra_time_ns = slow_time_ns - default_time_ns;
default_line_time_ns = DIV_ROUND_UP(default_time_ns, yres);
extra_time_ns = slow_time_ns - default_time_ns + idle_time_ns;
default_line_time_ns = DIV_ROUND_UP(1000000000, default_fps * yres);
threshold_lines = extra_time_ns / default_line_time_ns;
threshold_lines = DIV_ROUND_UP(extra_time_ns, default_line_time_ns);
/* some DDICs express the timeout value in lines/4, round down to compensate */
threshold_lines = round_down(threshold_lines, 4);
/* remove 2 lines to cover for latency */
if (threshold_lines - 2 > DEFAULT_TEARCHECK_SYNC_THRESH_START)
threshold_lines -= 2;
SDE_DEBUG_CMDENC(cmd_enc, "slow:%d default:%d extra:%d(ns)\n",
slow_time_ns, default_time_ns, extra_time_ns);
SDE_DEBUG_CMDENC(cmd_enc, "xfer:%d(us) idle:%d(ns) lines:%d\n",
transfer_time_us, idle_time_ns, threshold_lines);
SDE_DEBUG_CMDENC(cmd_enc, "min_fps:%d fps:%d yres:%d\n",
qsync_min_fps, default_fps, yres);
SDE_DEBUG_CMDENC(cmd_enc, "min_fps:%d fps:%d yres:%d lines:%d\n",
qsync_min_fps, default_fps, yres, threshold_lines);
SDE_EVT32(qsync_mode, qsync_min_fps, extra_time_ns, default_fps,
yres, transfer_time_us, threshold_lines);
yres, threshold_lines);
}
exit: