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drm/amd/display: Report stream as different on scaling change

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When scaling is enabled, our preference is to scale up to the prefered
(native) mode. This means that hardware timings will be the same across
a modeset.

Therefore, also report mode as changed if source or destination
rectangle is different.

Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo (Sunpeng) Li
2017-10-06 11:57:40 -04:00
committed by Alex Deucher
parent 199e458aaf
commit 9a5d9c48d8
3 changed files with 27 additions and 2 deletions
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5
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -4428,12 +4428,13 @@ static int dm_update_crtcs_state(struct dc *dc,
}
}
if (dc_is_stream_unchanged(new_stream, dm_old_crtc_state->stream)) {
if (dc_is_stream_unchanged(new_stream, dm_old_crtc_state->stream) &&
dc_is_stream_scaling_unchanged(new_stream, dm_old_crtc_state->stream)) {
new_crtc_state->mode_changed = false;
DRM_DEBUG_DRIVER("Mode change not required, setting mode_changed to %d",
new_crtc_state->mode_changed);
new_crtc_state->mode_changed);
}