Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: jason-jh.lin <redacted>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index a4e80e499674..369d3e68c0b6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c

@@ -4,6 +4,8 @@
  */

 #include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/mailbox_controller.h>
 #include <linux/pm_runtime.h>
 #include <linux/soc/mediatek/mtk-cmdq.h>
 #include <linux/soc/mediatek/mtk-mmsys.h>

@@ -222,9 +224,11 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
 }

 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
-static void ddp_cmdq_cb(struct cmdq_cb_data data)
+static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
 {
-       cmdq_pkt_destroy(data.data);
+       struct cmdq_cb_data *data = mssg;
+
+       cmdq_pkt_destroy(data->pkt);
 }
 #endif

@@ -475,7 +479,12 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
                cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
                mtk_crtc_ddp_config(crtc, cmdq_handle);
                cmdq_pkt_finalize(cmdq_handle);
-               cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
+               dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+                                          cmdq_handle->pa_base,
+                                          cmdq_handle->cmd_buf_size,
+                                          DMA_TO_DEVICE);
+               mbox_send_message(mtk_crtc->cmdq_client->chan, cmdq_handle);
+               mbox_client_txdone(mtk_crtc->cmdq_client->chan, 0);
        }
 #endif
        mtk_crtc->config_updating = false;

@@ -839,6 +848,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
        }

        if (mtk_crtc->cmdq_client) {
+               mtk_crtc->cmdq_client->client.rx_callback = ddp_cmdq_cb;
                ret = of_property_read_u32_index(priv->mutex_node,
                                                 "mediatek,gce-events",
                                                 drm_crtc_index(&mtk_crtc->base),
--

2.18.0