[PATCH] Fix cursor plane didn't update

[jason-jh . lin]

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 plan hook and update the normal
   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....@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c  |  1 -
 drivers/gpu/drm/mediatek/mtk_drm_plane.c | 60 ++++++++++++++----------
 2 files changed, 34 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c 
b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 474efb844249..063c75bab3a8 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -538,7 +538,6 @@ void mtk_drm_crtc_async_update(struct drm_crtc *crtc, 
struct drm_plane *plane,
        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;
 }
-- 
2.18.0