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drm/amd/display: Enable fast plane updates on DCN3.2 and above

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commit 435f5b369657cffee4b04db1f5805b48599f4dbe upstream.

[WHY]
When cursor moves across screen boarder, lag cursor observed,
since subvp settings need to sync up with vblank that causes
cursor updates being delayed.

[HOW]
Enable fast plane updates on DCN3.2 to fix it.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Tianci Yin <tianci.yin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tianci Yin 2023-11-01 09:47:13 +08:00 committed by Greg Kroah-Hartman
parent fb5c134ca5
commit 68d774eb10
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -9285,14 +9285,14 @@ static bool should_reset_plane(struct drm_atomic_state *state,
struct drm_plane *other;
struct drm_plane_state *old_other_state, *new_other_state;
struct drm_crtc_state *new_crtc_state;
struct amdgpu_device *adev = drm_to_adev(plane->dev);
int i;
/*
* TODO: Remove this hack once the checks below are sufficient
* enough to determine when we need to reset all the planes on
* the stream.
* TODO: Remove this hack for all asics once it proves that the
* fast updates works fine on DCN3.2+.
*/
if (state->allow_modeset)
if (adev->ip_versions[DCE_HWIP][0] < IP_VERSION(3, 2, 0) && state->allow_modeset)
return true;
/* Exit early if we know that we're adding or removing the plane. */