[PATCH 5.13 041/151] drm/mediatek: Fix cursor plane no update

Greg Kroah-Hartman
2021-08-16T13:22:17Z

From: jason-jh.lin <jason-jh.lin@mediatek.com>

[ Upstream commit 1a64a7aff8da352c9419de3d5c34343682916411 ]

The cursor plane should use the current plane state in atomic_async_update
because it would not be the new plane state in the global atomic state
since _swap_state happened when those hook are run.

Fix cursor plane issue by below modification:
1. Remove plane_helper_funcs->atomic_update(plane, state) in
mtk_drm_crtc_async_update.
2. Add mtk_drm_update_new_state in to mtk_plane_atomic_async_update to
update the cursor plane by current plane state hook and update
others plane by the new_state.

Fixes: 37418bf14c13 ("drm: Use state helper instead of the plane state pointer")
Signed-off-by: jason-jh.lin <jason-jh.lin@mediatek.com>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 3 --
drivers/gpu/drm/mediatek/mtk_drm_plane.c | 60 ++++++++++++++----------
2 files changed, 34 insertions(+), 29 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 474efb844249..735efe79f075 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -532,13 +532,10 @@ void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
- const struct drm_plane_helper_funcs *plane_helper_funcs =
- plane->helper_private;

if (!mtk_crtc->enabled)
return;

- plane_helper_funcs->atomic_update(plane, state);
mtk_drm_crtc_update_config(mtk_crtc, false);
}

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index b5582dcf564c..e6dcb34d3052 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -110,6 +110,35 @@ static int mtk_plane_atomic_async_check(struct drm_plane *plane,
true, true);
}

+static void mtk_plane_update_new_state(struct drm_plane_state *new_state,
+ struct mtk_plane_state *mtk_plane_state)
+{
+ struct drm_framebuffer *fb = new_state->fb;
+ struct drm_gem_object *gem;
+ struct mtk_drm_gem_obj *mtk_gem;
+ unsigned int pitch, format;
+ dma_addr_t addr;
+
+ gem = fb->obj[0];
+ mtk_gem = to_mtk_gem_obj(gem);
+ addr = mtk_gem->dma_addr;
+ pitch = fb->pitches[0];
+ format = fb->format->format;
+
+ addr += (new_state->src.x1 >> 16) * fb->format->cpp[0];
+ addr += (new_state->src.y1 >> 16) * pitch;
+
+ mtk_plane_state->pending.enable = true;
+ mtk_plane_state->pending.pitch = pitch;
+ mtk_plane_state->pending.format = format;
+ mtk_plane_state->pending.addr = addr;
+ mtk_plane_state->pending.x = new_state->dst.x1;
+ mtk_plane_state->pending.y = new_state->dst.y1;
+ mtk_plane_state->pending.width = drm_rect_width(&new_state->dst);
+ mtk_plane_state->pending.height = drm_rect_height(&new_state->dst);
+ mtk_plane_state->pending.rotation = new_state->rotation;
+}
+
static void mtk_plane_atomic_async_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
@@ -126,8 +155,10 @@ static void mtk_plane_atomic_async_update(struct drm_plane *plane,
plane->state->src_h = new_state->src_h;
plane->state->src_w = new_state->src_w;
swap(plane->state->fb, new_state->fb);
- new_plane_state->pending.async_dirty = true;

+ mtk_plane_update_new_state(new_state, new_plane_state);
+ wmb(); /* Make sure the above parameters are set before update */
+ new_plane_state->pending.async_dirty = true;
mtk_drm_crtc_async_update(new_state->crtc, plane, state);
}

@@ -189,14 +220,8 @@ static void mtk_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
plane);
struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state);
- struct drm_crtc *crtc = new_state->crtc;
- struct drm_framebuffer *fb = new_state->fb;
- struct drm_gem_object *gem;
- struct mtk_drm_gem_obj *mtk_gem;
- unsigned int pitch, format;
- dma_addr_t addr;

- if (!crtc || WARN_ON(!fb))
+ if (!new_state->crtc || WARN_ON(!new_state->fb))
return;

if (!new_state->visible) {
@@ -204,24 +229,7 @@ static void mtk_plane_atomic_update(struct drm_plane *plane,
return;
}

- gem = fb->obj[0];
- mtk_gem = to_mtk_gem_obj(gem);
- addr = mtk_gem->dma_addr;
- pitch = fb->pitches[0];
- format = fb->format->format;
-
- addr += (new_state->src.x1 >> 16) * fb->format->cpp[0];
- addr += (new_state->src.y1 >> 16) * pitch;
-
- mtk_plane_state->pending.enable = true;
- mtk_plane_state->pending.pitch = pitch;
- mtk_plane_state->pending.format = format;
- mtk_plane_state->pending.addr = addr;
- mtk_plane_state->pending.x = new_state->dst.x1;
- mtk_plane_state->pending.y = new_state->dst.y1;
- mtk_plane_state->pending.width = drm_rect_width(&new_state->dst);
- mtk_plane_state->pending.height = drm_rect_height(&new_state->dst);
- mtk_plane_state->pending.rotation = new_state->rotation;
+ mtk_plane_update_new_state(new_state, mtk_plane_state);
wmb(); /* Make sure the above parameters are set before update */
mtk_plane_state->pending.dirty = true;
}
--
2.30.2