[PATCH 2/2] drm/mediatek: clear pending flag when cmdq packet is done.

[Yongqiang Niu <yongqiang.niu@mediatek.com>]

In cmdq mode, packet may be flushed before it is executed, so
the pending flag should be cleared after cmdq packet is done.

Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 57 ++++++++++++++++++++++++++++++---
 1 file changed, 52 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index c37881b..6a3cf47 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -231,18 +231,57 @@ static void ddp_cmdq_cb(struct cmdq_cb_data data)
 {
 	struct mtk_cmdq_cb_data *cb_data = data.data;
 	struct mtk_drm_crtc *mtk_crtc;
+	struct mtk_crtc_state *state;
+	unsigned int i;
 
 	if (!cb_data) {
 		DRM_ERROR("cmdq callback data is null pointer!\n");
 		return;
 	}
 
+	if (data.sta == CMDQ_CB_ERROR) {
+		DRM_WARN("cmdq callback error!!\n");
+		goto destroy_pkt;
+	}
+
 	mtk_crtc = cb_data->mtk_crtc;
 	if (!mtk_crtc) {
 		DRM_ERROR("cmdq callback mtk_crtc is null pointer!\n");
 		goto destroy_pkt;
 	}
 
+	state = to_mtk_crtc_state(mtk_crtc->base.state);
+
+	if (state->pending_config) {
+		state->pending_config = false;
+	}
+
+	if (mtk_crtc->pending_planes) {
+		for (i = 0; i < mtk_crtc->layer_nr; i++) {
+			struct drm_plane *plane = &mtk_crtc->planes[i];
+			struct mtk_plane_state *plane_state;
+
+			plane_state = to_mtk_plane_state(plane->state);
+
+			if (plane_state->pending.config)
+				plane_state->pending.config = false;
+		}
+		mtk_crtc->pending_planes = false;
+	}
+
+	if (mtk_crtc->pending_async_planes) {
+		for (i = 0; i < mtk_crtc->layer_nr; i++) {
+			struct drm_plane *plane = &mtk_crtc->planes[i];
+			struct mtk_plane_state *plane_state;
+
+			plane_state = to_mtk_plane_state(plane->state);
+
+			if (plane_state->pending.async_config)
+				plane_state->pending.async_config = false;
+		}
+		mtk_crtc->pending_async_planes = false;
+	}
+
 	mtk_drm_finish_page_flip(mtk_crtc);
 
 destroy_pkt:
@@ -403,7 +442,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
 				    state->pending_vrefresh, 0,
 				    cmdq_handle);
 
-		state->pending_config = false;
+		if (!cmdq_handle)
+			state->pending_config = false;
 	}
 
 	if (mtk_crtc->pending_planes) {
@@ -423,9 +463,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
 				mtk_ddp_comp_layer_config(comp, local_layer,
 							  plane_state,
 							  cmdq_handle);
-			plane_state->pending.config = false;
+			if (!cmdq_handle)
+				plane_state->pending.config = false;
 		}
-		mtk_crtc->pending_planes = false;
+
+		if (!cmdq_handle)
+			mtk_crtc->pending_planes = false;
 	}
 
 	if (mtk_crtc->pending_async_planes) {
@@ -445,9 +488,13 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
 				mtk_ddp_comp_layer_config(comp, local_layer,
 							  plane_state,
 							  cmdq_handle);
-			plane_state->pending.async_config = false;
+
+			if (!cmdq_handle)
+				plane_state->pending.async_config = false;
 		}
-		mtk_crtc->pending_async_planes = false;
+
+		if (!cmdq_handle)
+			mtk_crtc->pending_async_planes = false;
 	}
 }
 
-- 
1.8.1.1.dirty