diff options
| author | Aric Cyr <aric.cyr@amd.com> | 2020-12-04 08:22:46 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-12-15 19:34:29 +0300 |
| commit | 610c4974ad172dad884244763125f8cd6585c503 (patch) | |
| tree | 0f845146e5e52b87007b647b90544b38817ecae9 /drivers/gpu/drm/amd/display/dc/core | |
| parent | 410066d24cfc1071be25e402510367aca9db5cb6 (diff) | |
| download | linux-610c4974ad172dad884244763125f8cd6585c503.tar.xz | |
drm/amd/display: Only update FP2 for full updates
[Why]
FP2 is not double buffered and must wait for VACTIVE
before programming.
[How]
Only update when there is a full update we should
change FP2 to avoid delay every flip.
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 58eb0d69873a..7339d9855ec8 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -2625,6 +2625,26 @@ static void commit_planes_for_stream(struct dc *dc, } } + if (update_type != UPDATE_TYPE_FAST) { + // If changing VTG FP2: wait until back in vactive to program FP2 + // Need to ensure that pipe unlock happens soon after to minimize race condition + for (i = 0; i < dc->res_pool->pipe_count; i++) { + struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i]; + + if (pipe_ctx->top_pipe || pipe_ctx->stream != stream) + continue; + + if (!pipe_ctx->update_flags.bits.global_sync) + continue; + + pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VBLANK); + pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VACTIVE); + + pipe_ctx->stream_res.tg->funcs->set_vtg_params( + pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing, true); + } + } + if ((update_type != UPDATE_TYPE_FAST) && dc->hwss.interdependent_update_lock) dc->hwss.interdependent_update_lock(dc, context, false); else |