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Commit ed73d348 authored by Raviteja Tamatam's avatar Raviteja Tamatam
Browse files

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



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: default avatarRaviteja Tamatam <travitej@codeaurora.org>
parent 700f3cc7

msm/sde/sde_encoder_phys_cmd.c

+23 −0
Original line number Diff line number Diff line
@@ -1443,6 +1443,7 @@ 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");
@@ -1467,6 +1468,28 @@ 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;