anierin/display-drivers
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

disp: msm: sde: request hard reset on vsync timeout

Browse Source 
During frame updates if vsync timeout happens, the probable reason
is pixel_clock is turned off. In such a case the recent update is
not applied on hw and can lead to issues. For example if a pipe
was detached it will not get detached since this update will not
take place.
This change detects the timeout and requests a hard reset from user mode
driver so as to ensure that all the displays are power off and footswitch
is turned off. This will ensure dpu hardware gets reset.

Change-Id: Ic9bade88b6502feb7334d239eaf669977233dbac
Signed-off-by: Abhijit Kulkarni <kabhijit@codeaurora.org>
This commit is contained in:
Abhijit Kulkarni
2020-11-10 14:31:35 -08:00
parent ecc89334b0
commit 91a070feb3
1 changed files with 10 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
msm/sde/sde_encoder_phys_vid.c
View File

@@ -877,12 +877,15 @@ static int _sde_encoder_phys_vid_wait_for_vblank(
u32 event = SDE_ENCODER_FRAME_EVENT_ERROR |
SDE_ENCODER_FRAME_EVENT_SIGNAL_RELEASE_FENCE |
SDE_ENCODER_FRAME_EVENT_SIGNAL_RETIRE_FENCE;
struct drm_connector *conn;
if (!phys_enc) {
pr_err("invalid encoder\n");
return -EINVAL;
}
conn = phys_enc->connector;
wait_info.wq = &phys_enc->pending_kickoff_wq;
wait_info.atomic_cnt = &phys_enc->pending_kickoff_cnt;
wait_info.timeout_ms = KICKOFF_TIMEOUT_MS;
@@ -893,10 +896,16 @@ static int _sde_encoder_phys_vid_wait_for_vblank(
if (notify && (ret == -ETIMEDOUT) &&
atomic_add_unless(&phys_enc->pending_retire_fence_cnt, -1, 0) &&
phys_enc->parent_ops.handle_frame_done)
phys_enc->parent_ops.handle_frame_done) {
phys_enc->parent_ops.handle_frame_done(
phys_enc->parent, phys_enc, event);
if (sde_encoder_recovery_events_enabled(phys_enc->parent))
sde_connector_event_notify(conn,
DRM_EVENT_SDE_HW_RECOVERY,
sizeof(uint8_t), SDE_RECOVERY_HARD_RESET);
}
SDE_EVT32(DRMID(phys_enc->parent), event, notify, ret,
ret ? SDE_EVTLOG_FATAL : 0);
return ret;