4.19-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 5062b797db4103218fa00ee254417b8ecaab7401 ]
[Why] There are opt1c lock warnings and CRTC read timeouts when running the "igt@kms_plane@plane-position-hole-dpms-pipe-*" tests. These are caused by trying to reprogram planes that are not in the current context.
DPMS off removes the stream from the context. In this case:
new_crtc_state->active_changed = true new_crtc_state->mode_changed = false
The planes are reprogrammed before the stream is removed from the context because stream_state->mode_changed = false.
For DPMS adds the stream and planes back to the context:
new_crtc_state->active_changed = true new_crtc_state->mode_changed = false
The planes are also reprogrammed here before the stream is added to the context because stream_state->mode_changed = true. They were not previously in the current context so warnings occur here.
[How] Set stream_state->mode_changed = true when new_crtc_state->active_changed = true too.
This prevents reprogramming before the context is applied in DC. The programming will be done after the context is applied.
Signed-off-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Reviewed-by: Sun peng Li Sunpeng.Li@amd.com Acked-by: Bhawanpreet Lakha Bhawanpreet.Lakha@amd.com Acked-by: Tony Cheng Tony.Cheng@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
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 c5ba9128b736..c57e85f08e23 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -4368,7 +4368,8 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state, static void amdgpu_dm_crtc_copy_transient_flags(struct drm_crtc_state *crtc_state, struct dc_stream_state *stream_state) { - stream_state->mode_changed = crtc_state->mode_changed; + stream_state->mode_changed = + crtc_state->mode_changed || crtc_state->active_changed; }
static int amdgpu_dm_atomic_commit(struct drm_device *dev,