From: Zhikai Zhai <zhikai.zhai@amd.com>
Date: Thu, 2 Mar 2023 10:04:12 +0000 (+0800)
Subject: drm/amd/display: skip wait vblank
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ac84304d68c4b310e61b275317c0ddee1b746cb8;p=linux.git

drm/amd/display: skip wait vblank

[WHY]
There is no need to wait vblank in the vupdate locked
region at a full type update

[HOW]
skip wait vblank when global sync change

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Zhikai Zhai <zhikai.zhai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

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 53669f832ba53..69ea1f4ea749f 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -1720,10 +1720,8 @@ static void dcn20_program_pipe(
 				pipe_ctx->pipe_dlg_param.vupdate_offset,
 				pipe_ctx->pipe_dlg_param.vupdate_width);
 
-		if (pipe_ctx->stream->mall_stream_config.type != SUBVP_PHANTOM) {
-			pipe_ctx->stream_res.tg->funcs->wait_for_state(pipe_ctx->stream_res.tg, CRTC_STATE_VBLANK);
+		if (pipe_ctx->stream->mall_stream_config.type != SUBVP_PHANTOM)
 			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);