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disp: msm: sde: signal retire fence in wr_ptr timeout

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There can be few cases of ESD where CTL_START is cleared but
wr_ptr interrupt does not come. Signaling retire fence in these
cases to avoid freeze and dangling pending_retire_fence_cnt.

Change-Id: I167f69dce5cbe43b4771e5056d8a73bd7587e76e
Signed-off-by: Raviteja Tamatam <travitej@codeaurora.org>
This commit is contained in:
Raviteja Tamatam
2019-11-29 17:43:12 +05:30
committed by Gerrit - the friendly Code Review server
parent 0380f4bd90
commit c763a14ba0
1 changed files with 23 additions and 0 deletions
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23
msm/sde/sde_encoder_phys_cmd.c
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@@ -1450,6 +1450,7 @@ static int _sde_encoder_phys_cmd_wait_for_wr_ptr(
int ret;
bool frame_pending = true;
struct sde_hw_ctl *ctl;
unsigned long lock_flags;
if (!phys_enc || !phys_enc->hw_ctl) {
SDE_ERROR("invalid argument(s)\n");
@@ -1474,6 +1475,28 @@ static int _sde_encoder_phys_cmd_wait_for_wr_ptr(
frame_pending = ctl->ops.get_start_state(ctl);
ret = frame_pending ? ret : 0;
/*
* There can be few cases of ESD where CTL_START is cleared but
* wr_ptr irq doesn't come. Signaling retire fence in these
* cases to avoid freeze and dangling pending_retire_fence_cnt
*/
if (!ret) {
SDE_EVT32(DRMID(phys_enc->parent),
SDE_EVTLOG_FUNC_CASE1);
if (sde_encoder_phys_cmd_is_master(phys_enc) &&
atomic_add_unless(
&phys_enc->pending_retire_fence_cnt, -1, 0)) {
spin_lock_irqsave(phys_enc->enc_spinlock,
lock_flags);
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc,
SDE_ENCODER_FRAME_EVENT_SIGNAL_RETIRE_FENCE);
spin_unlock_irqrestore(phys_enc->enc_spinlock,
lock_flags);
}
}
}
cmd_enc->wr_ptr_wait_success = (ret == 0) ? true : false;