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Commit 5ce675bd authored by Yashwanth's avatar Yashwanth
Browse files

disp: msm: sde: update frame done logic during pp_done miss scenario 



In few cases, pp-done interrupt is missed due to irq
latency with POSTED start and frame done count is not
updated accordingly. This change updates frame done
logic to handle such scenarios.

Issue Scenario:                 Earlier         Now
                              enc-0 enc-1   enc-0 enc-1
--> pp0 processed               1    0        1    0
--> pp1 missed                  1    0        1    0
--> pp0 processed and error is  1    0        2    0
    returned in first case.
--> pp1 processed               1    1        2    1
--> After signalling frame done 0    0        1    0
    for both encoders
--> pp done irq miss handler    0    1        1    1
--> After signalling frame done 0    1        0    0
    only for second encoder.

Change-Id: If29457011ec54a3b0254ec351d4a48ceb76614e6
Signed-off-by: default avatarYashwanth <yvulapu@codeaurora.org>
parent fea217ca

msm/sde/sde_encoder.c

+4 −9
Original line number Diff line number Diff line
@@ -3774,20 +3774,15 @@ static void sde_encoder_frame_done_callback( 
			if (sde_enc->phys_encs[i] == ready_phys) {

				SDE_EVT32_VERBOSE(DRMID(drm_enc), i,

				     atomic_read(&sde_enc->frame_done_cnt[i]));

				if (!atomic_add_unless(

					&sde_enc->frame_done_cnt[i], 1, 1)) {

				if (atomic_inc_return(

					&sde_enc->frame_done_cnt[i]) > 1)

					SDE_EVT32(DRMID(drm_enc), event,

						ready_phys->intf_idx,

						SDE_EVTLOG_ERROR);

					SDE_ERROR_ENC(sde_enc,

						"intf idx:%d, event:%d\n",

						ready_phys->intf_idx, event);

					return;

				}

			}



			if (topology != SDE_RM_TOPOLOGY_PPSPLIT &&

			    atomic_read(&sde_enc->frame_done_cnt[i]) != 1)

			    !atomic_read(&sde_enc->frame_done_cnt[i]))

				trigger = false;

		}
@@ -3800,7 +3795,7 @@ static void sde_encoder_frame_done_callback( 
					&sde_enc->crtc_frame_event_cb_data,

					event);

			for (i = 0; i < sde_enc->num_phys_encs; i++)

				atomic_set(&sde_enc->frame_done_cnt[i], 0);

				atomic_dec(&sde_enc->frame_done_cnt[i]);

		}

	} else if (sde_enc->crtc_frame_event_cb) {

		if (!is_cmd_mode)