diff options
| author | Alex Deucher <[email protected]> | 2019-11-15 10:02:44 -0500 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2019-12-02 17:39:48 -0500 |
| commit | 0e29be9e0bbbf9cb3d718c5c48382b1420ce0749 (patch) | |
| tree | daef74f6b2590419efa626e4dae8594d6082f1c7 | |
| parent | 72b741af22d4e3dbce8a71bfd5d406b2b38ee058 (diff) | |
drm/amd/display: re-enable wait in pipelock, but add timeout
Removing this causes hangs in some games, so re-add it, but add
a timeout so we don't hang while switching flip types.
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=205169
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=112266
Reviewed-by: Harry Wentland <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c index 03e4aafb237b..d5c18fb4436a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c @@ -1112,6 +1112,25 @@ void dcn20_pipe_control_lock( if (pipe->plane_state != NULL) flip_immediate = pipe->plane_state->flip_immediate; + if (flip_immediate && lock) { + const int TIMEOUT_FOR_FLIP_PENDING = 100000; + int i; + + for (i = 0; i < TIMEOUT_FOR_FLIP_PENDING; ++i) { + if (!pipe->plane_res.hubp->funcs->hubp_is_flip_pending(pipe->plane_res.hubp)) + break; + udelay(1); + } + + if (pipe->bottom_pipe != NULL) { + for (i = 0; i < TIMEOUT_FOR_FLIP_PENDING; ++i) { + if (!pipe->bottom_pipe->plane_res.hubp->funcs->hubp_is_flip_pending(pipe->bottom_pipe->plane_res.hubp)) + break; + udelay(1); + } + } + } + /* In flip immediate and pipe splitting case, we need to use GSL * for synchronization. Only do setup on locking and on flip type change. */ |