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From 310d024c1aa624538d9fdf7f3c62983792df4e01 Mon Sep 17 00:00:00 2001
From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Date: Mon, 26 Aug 2019 15:04:18 -0400
Subject: [PATCH 3832/4256] drm/amd/display: add vtg update after global sync
update
Global sync update was missing vtg update resulting in underflow if
vstartup decreased a significant amount.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Jaehyun Chung <Jaehyun.Chung@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
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 faaf8841c61e..4bb5ad19c4cf 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -1361,7 +1361,7 @@ static void dcn20_program_pipe(
&& !pipe_ctx->top_pipe && !pipe_ctx->prev_odm_pipe)
dc->hwss.blank_pixel_data(dc, pipe_ctx, !pipe_ctx->plane_state->visible);
- if (pipe_ctx->update_flags.bits.global_sync)
+ if (pipe_ctx->update_flags.bits.global_sync) {
pipe_ctx->stream_res.tg->funcs->program_global_sync(
pipe_ctx->stream_res.tg,
pipe_ctx->pipe_dlg_param.vready_offset,
@@ -1369,6 +1369,10 @@ static void dcn20_program_pipe(
pipe_ctx->pipe_dlg_param.vupdate_offset,
pipe_ctx->pipe_dlg_param.vupdate_width);
+ pipe_ctx->stream_res.tg->funcs->set_vtg_params(
+ pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
+ }
+
if (pipe_ctx->update_flags.bits.odm)
dc->hwss.update_odm(dc, context, pipe_ctx);
--
2.17.1
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