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From fe39dd485769a5f7b5c5dfd3058c97a35332cbad Mon Sep 17 00:00:00 2001
From: Mikita Lipski <mikita.lipski@amd.com>
Date: Mon, 18 Dec 2017 10:34:56 -0500
Subject: [PATCH 3099/4131] drm/amd/display: Prevent master programming in
multisync
Verify that the stream is master - and program only the slave displays
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
drivers/gpu/drm/amd/display/dc/core/dc.c | 4 +++-
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 2 +-
3 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 98bba82..90a6c98 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2515,7 +2515,7 @@ static void set_master_stream(struct dc_stream_state *stream_set[],
}
}
for (j = 0; j < stream_count; j++) {
- if (stream_set[j] && j != master_stream)
+ if (stream_set[j])
stream_set[j]->triggered_crtc_reset.event_source = stream_set[master_stream];
}
}
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 6aef36b..a744dee 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -521,11 +521,13 @@ static void enable_timing_multisync(
if (!ctx->res_ctx.pipe_ctx[i].stream ||
!ctx->res_ctx.pipe_ctx[i].stream->triggered_crtc_reset.enabled)
continue;
+ if (ctx->res_ctx.pipe_ctx[i].stream == ctx->res_ctx.pipe_ctx[i].stream->triggered_crtc_reset.event_source)
+ continue;
multisync_pipes[multisync_count] = &ctx->res_ctx.pipe_ctx[i];
multisync_count++;
}
- if (multisync_count > 1) {
+ if (multisync_count > 0) {
dc->hwss.enable_per_frame_crtc_position_reset(
dc, multisync_count, multisync_pipes);
}
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 52e31e7..0f5a22e 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -1097,7 +1097,7 @@ static void dcn10_enable_per_frame_crtc_position_reset(
DC_SYNC_INFO("Waiting for trigger\n");
- for (i = 1; i < group_size; i++)
+ for (i = 0; i < group_size; i++)
wait_for_reset_trigger_to_occur(dc_ctx, grouped_pipes[i]->stream_res.tg);
DC_SYNC_INFO("Multi-display sync is complete\n");
--
2.7.4
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