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drm/amd/display: Reset planes for color management changes 

[Why]
For commits with allow_modeset=false and CRTC degamma changes the planes
aren't reset. This results in incorrect rendering.

[How]
Reset the planes when color management has changed on the CRTC.
Technically this will include regamma changes as well, but it doesn't
really after legacy userspace since those commit with
allow_modeset=true.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
alistair/sunxi64-5.4-dsi
Nicholas Kazlauskas 2019-05-01 10:26:09 -04:00 committed by Alex Deucher
parent e25228b02e
commit 7316c4ad29
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -6354,6 +6354,10 @@ static bool should_reset_plane(struct drm_atomic_state *state,
if (!new_crtc_state)
return true;
/* CRTC Degamma changes currently require us to recreate planes. */
if (new_crtc_state->color_mgmt_changed)
return true;
if (drm_atomic_crtc_needs_modeset(new_crtc_state))
return true;