Disable the plane if it's not visible. Otherwise mtk_ovl_layer_config()
would proceed with invalid plane and we may see vblank timeout.
Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Hsin-Yi Wang <hsi...@chromium.org>
Reviewed-by: Chun-Kuang Hu <chunkuang...@kernel.org>
---
v2: Add fixes tag
---
drivers/gpu/drm/mediatek/mtk_drm_plane.c | 23 +++++++++++++----------
1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index c2bd683a87c8..74dc71c7f3b6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -164,6 +164,16 @@ static int mtk_plane_atomic_check(struct drm_plane *plane,
true, true);
}
+static void mtk_plane_atomic_disable(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
+
+ state->pending.enable = false;
+ wmb(); /* Make sure the above parameter is set before update */
+ state->pending.dirty = true;
+}
+
static void mtk_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
@@ -178,6 +188,9 @@ static void mtk_plane_atomic_update(struct drm_plane *plane,
if (!crtc || WARN_ON(!fb))
return;
+ if (!plane->state->visible)
+ return mtk_plane_atomic_disable(plane, old_state);
+
gem = fb->obj[0];
mtk_gem = to_mtk_gem_obj(gem);
addr = mtk_gem->dma_addr;
@@ -200,16 +213,6 @@ static void mtk_plane_atomic_update(struct drm_plane
*plane,
state->pending.dirty = true;
}
-static void mtk_plane_atomic_disable(struct drm_plane *plane,
- struct drm_plane_state *old_state)
-{
- struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
-
- state->pending.enable = false;
- wmb(); /* Make sure the above parameter is set before update */
- state->pending.dirty = true;
-}
-
static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
.prepare_fb = drm_gem_fb_prepare_fb,
.atomic_check = mtk_plane_atomic_check,
--
2.27.0.111.gc72c7da667-goog
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