From: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Date: Wed, 26 Jul 2017 15:52:28 -0400
Subject: drm/amd/display: Implement plane atomic_check.
Git-commit: cbd194881e05844cc54573480aac8df3fd97222d
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Use per surface validation hook.

Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3141,9 +3141,26 @@ int dm_create_validation_set_for_connect
 	return MODE_OK;
 }
 
+int dm_plane_atomic_check(struct drm_plane *plane,
+			    struct drm_plane_state *state)
+{
+	struct amdgpu_device *adev = plane->dev->dev_private;
+	struct dc *dc = adev->dm.dc;
+	struct dm_plane_state *dm_plane_state = to_dm_plane_state(state);
+
+	if (!dm_plane_state->surface)
+		return true;
+
+	if (dc_validate_surface(dc, dm_plane_state->surface))
+		return 0;
+
+	return -EINVAL;
+}
+
 static const struct drm_plane_helper_funcs dm_plane_helper_funcs = {
 	.prepare_fb = dm_plane_helper_prepare_fb,
 	.cleanup_fb = dm_plane_helper_cleanup_fb,
+	.atomic_check = dm_plane_atomic_check,
 };
 
 /*