[PATCH v3 1/8] drm/rockchip: vop2: Take the UV plane address from the second GEM object

[Arun Iyengar via B4 Relay <devnull+aiyengar1990.gmail.com@kernel.org>]

From: Arun Iyengar <aiyengar1990@gmail.com>

vop2_plane_atomic_update() takes the chroma plane address from
fb->obj[0]. The planes of a framebuffer can be in different GEM objects
(ADDFB2 with two handles, e.g. NV12M from a V4L2 decoder), and the
window then fetches the chroma plane from the luma buffer.

Use fb->obj[1] for formats with more than one plane.

Fixes: 604be85547ce ("drm/rockchip: Add VOP2 driver")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/sashiko-outbox-206550@kernel.org/
Cc: stable@vger.kernel.org
Signed-off-by: Arun Iyengar <aiyengar1990@gmail.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index 76d151b8bc52..e8ef83d6924b 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
@@ -1369,7 +1369,8 @@ static void vop2_plane_atomic_update(struct drm_plane *plane,
 		if ((pstate->rotation & DRM_MODE_REFLECT_Y) && !afbc_en)
 			offset += fb->pitches[1] * ((pstate->src_h >> 16) - 2) / vsub;
 
-		rk_obj = to_rockchip_obj(fb->obj[0]);
+		if (fb->format->num_planes > 1)
+			rk_obj = to_rockchip_obj(fb->obj[1]);
 		uv_mst = rk_obj->dma_addr + offset + fb->offsets[1];
 	}
 

-- 
2.55.0