[PATCH v6 13/16] soc: mediatek: cmdq: export finalize function

[Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>]

Export finalize function to client which helps append eoc and jump
command to pkt. Let client decide call finalize or not.

Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Acked-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 1 +
 drivers/soc/mediatek/mtk-cmdq-helper.c  | 7 ++-----
 include/linux/soc/mediatek/mtk-cmdq.h   | 8 ++++++++
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 0dfcd1787e65..7daaabc26eb1 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -490,6 +490,7 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
 		cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
 		cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event);
 		mtk_crtc_ddp_config(crtc, cmdq_handle);
+		cmdq_pkt_finalize(cmdq_handle);
 		cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
 	}
 #endif
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 4b07da56c7bb..ebcdd30cd783 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -391,7 +391,7 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
 }
 EXPORT_SYMBOL(cmdq_pkt_assign);
 
-static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
+int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
 {
 	struct cmdq_instruction inst = { {0} };
 	int err;
@@ -411,6 +411,7 @@ static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
 
 	return err;
 }
+EXPORT_SYMBOL(cmdq_pkt_finalize);
 
 static void cmdq_pkt_flush_async_cb(struct cmdq_cb_data data)
 {
@@ -445,10 +446,6 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
 	unsigned long flags = 0;
 	struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
 
-	err = cmdq_pkt_finalize(pkt);
-	if (err < 0)
-		return err;
-
 	pkt->cb.cb = cb;
 	pkt->cb.data = data;
 	pkt->async_cb.cb = cmdq_pkt_flush_async_cb;
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 28a50c3cf6a1..703cffcd55bd 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -244,6 +244,14 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
  */
 int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
 
+/**
+ * cmdq_pkt_finalize() - Append EOC and jump command to pkt.
+ * @pkt:	the CMDQ packet
+ *
+ * Return: 0 for success; else the error code is returned
+ */
+int cmdq_pkt_finalize(struct cmdq_pkt *pkt);
+
 /**
  * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
  *                          packet and call back at the end of done packet
-- 
2.18.0