From cf13f976ff19a63fd99dd47c8364ff9aeac2f725 Mon Sep 17 00:00:00 2001
From: Mark Yacoub <markyacoub@chromium.org>
Date: Mon, 13 Dec 2021 11:07:22 -0500
Subject: drm/mediatek: Set the default value of rotation to DRM_MODE_ROTATE_0
Git-commit: d95b00f1a8c57f10a7c83bec5a245391c7666f36
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

At the reset hook, call __drm_atomic_helper_plane_reset which is
called at the initialization of the plane and sets the default value of
rotation on all planes to DRM_MODE_ROTATE_0 which is equal to 1.

Tested on Jacuzzi (MTK).
Resolves IGT@kms_properties@plane-properties-{legacy,atomic}

Signed-off-by: Mark Yacoub <markyacoub@chromium.org>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/mediatek/mtk_drm_plane.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index 734a1fb052df..075747a6d4aa 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -44,9 +44,10 @@ static void mtk_plane_reset(struct drm_plane *plane)
 		state = kzalloc(sizeof(*state), GFP_KERNEL);
 		if (!state)
 			return;
-		plane->state = &state->base;
 	}
 
+	__drm_atomic_helper_plane_reset(plane, &state->base);
+
 	state->base.plane = plane;
 	state->pending.format = DRM_FORMAT_RGB565;
 }
-- 
2.38.1