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PM / devfreq: rockchip_dmc: Change frequency according to vop frame bandwidth

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Sometimes the vop line bandwidth is not high, the vop also report
buf empty err, and the frame bandwidth is high at this time, so change
ddr frequency according to frame bandwidth can fix the error.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Change-Id: Ia893a07def99aaaa4da421b6d619a8fd3eec9745
This commit is contained in:
Finley Xiao
2021-10-19 17:07:52 +08:00
committed by Tao Huang
parent 15201ca7b3
commit 4163c2ca85
1 changed files with 19 additions and 9 deletions
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28
drivers/devfreq/rockchip_dmc.c
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@@ -138,6 +138,7 @@ struct rockchip_dmcfreq {
struct notifier_block status_nb;
struct list_head video_info_list;
struct freq_map_table *vop_bw_tbl;
struct freq_map_table *vop_frame_bw_tbl;
struct freq_map_table *cpu_bw_tbl;
struct work_struct boost_work;
struct input_handler input_handler;
@@ -2486,13 +2487,15 @@ void rockchip_dmcfreq_vop_bandwidth_update(struct devfreq *devfreq,
if (!dmcfreq)
return;
dev_dbg(dmcfreq->dev, "line bw=%u, frame bw=%u, pn=%u\n",
line_bw_mbyte, frame_bw_mbyte, plane_num);
if (!dmcfreq->vop_pn_rl_tbl || !dmcfreq->set_msch_readlatency)
goto vop_bw_tbl;
for (i = 0; dmcfreq->vop_pn_rl_tbl[i].rl != CPUFREQ_TABLE_END; i++) {
if (plane_num >= dmcfreq->vop_pn_rl_tbl[i].pn)
readlatency = dmcfreq->vop_pn_rl_tbl[i].rl;
}
dev_dbg(dmcfreq->dev, "pn=%u\n", plane_num);
if (readlatency) {
cancel_delayed_work_sync(&dmcfreq->msch_rl_work);
dmcfreq->is_msch_rl_work_started = false;
@@ -2507,21 +2510,26 @@ void rockchip_dmcfreq_vop_bandwidth_update(struct devfreq *devfreq,
vop_bw_tbl:
if (!dmcfreq->auto_freq_en || !dmcfreq->vop_bw_tbl)
return;
goto vop_frame_bw_tbl;
for (i = 0; dmcfreq->vop_bw_tbl[i].freq != CPUFREQ_TABLE_END; i++) {
if (line_bw_mbyte >= dmcfreq->vop_bw_tbl[i].min)
target = dmcfreq->vop_bw_tbl[i].freq;
}
dev_dbg(dmcfreq->dev, "bw=%u\n", line_bw_mbyte);
if (!target || target == dmcfreq->vop_req_rate)
return;
vop_frame_bw_tbl:
if (!dmcfreq->auto_freq_en || !dmcfreq->vop_frame_bw_tbl)
goto next;
for (i = 0; dmcfreq->vop_frame_bw_tbl[i].freq != CPUFREQ_TABLE_END;
i++) {
if (frame_bw_mbyte >= dmcfreq->vop_frame_bw_tbl[i].min) {
if (target < dmcfreq->vop_frame_bw_tbl[i].freq)
target = dmcfreq->vop_frame_bw_tbl[i].freq;
}
}
next:
vop_last_rate = dmcfreq->vop_req_rate;
dmcfreq->vop_req_rate = target;
if (target > vop_last_rate)
rockchip_dmcfreq_update_target(dmcfreq);
}
@@ -2896,7 +2904,9 @@ static void rockchip_dmcfreq_parse_dt(struct rockchip_dmcfreq *dmcfreq)
if (rockchip_get_freq_map_talbe(np, "cpu-bw-dmc-freq",
&dmcfreq->cpu_bw_tbl))
dev_dbg(dev, "failed to get cpu bandwidth to dmc rate\n");
if (rockchip_get_freq_map_talbe(np, "vop-frame-bw-dmc-freq",
&dmcfreq->vop_frame_bw_tbl))
dev_dbg(dev, "failed to get vop frame bandwidth to dmc rate\n");
if (rockchip_get_freq_map_talbe(np, "vop-bw-dmc-freq",
&dmcfreq->vop_bw_tbl))
dev_err(dev, "failed to get vop bandwidth to dmc rate\n");