From 7bd294b2c87b7952a7975c6c22082969b04d47c8 Mon Sep 17 00:00:00 2001
From: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Date: Wed, 16 Sep 2020 12:44:46 -0400
Subject: [PATCH] drm/amd/display: Add missing "Copy GSL groups when committing
a new context"
[Why]
"Copy GSL groups when committing a new context" patch was accidentally
removed during a refactor
Patch: 21ffcc94d5b ("drm/amd/display: Copy GSL groups when committing a new context")
[How]
Re add it
Fixes: b6e881c9474 ("drm/amd/display: update navi to use new surface programming behaviour")
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 11 +++++++++++
1 file changed, 11 insertions(+)
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 d5d8ca870e01f..8db98c384003d 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -1636,6 +1636,17 @@ void dcn20_program_front_end_for_ctx(
struct dce_hwseq *hws = dc->hwseq;
DC_LOGGER_INIT(dc->ctx->logger);
+ /* Carry over GSL groups in case the context is changing. */
+ for (i = 0; i < dc->res_pool->pipe_count; i++) {
+ struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
+ struct pipe_ctx *old_pipe_ctx =
+ &dc->current_state->res_ctx.pipe_ctx[i];
+
+ if (pipe_ctx->stream == old_pipe_ctx->stream)
+ pipe_ctx->stream_res.gsl_group =
+ old_pipe_ctx->stream_res.gsl_group;
+ }
+
for (i = 0; i < dc->res_pool->pipe_count; i++) {
struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
--
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