[PATCH v1 11/12] soc: mediatek: cmdq: add wait no clear event function

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

Add wait no clear event function in cmdq helper functions to wait specific
event without clear to 0 after receive it.

Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
---
 drivers/soc/mediatek/mtk-cmdq-helper.c |   15 +++++++++++++++
 include/linux/soc/mediatek/mtk-cmdq.h  |   10 ++++++++++
 2 files changed, 25 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 3b10241..7f1e332 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -323,6 +323,21 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event)
 }
 EXPORT_SYMBOL(cmdq_pkt_wfe);
 
+int cmdq_pkt_wait_no_clear(struct cmdq_pkt *pkt, u16 event)
+{
+	struct cmdq_instruction inst = { {0} };
+
+	if (event >= CMDQ_MAX_EVENT)
+		return -EINVAL;
+
+	inst.op = CMDQ_CODE_WFE;
+	inst.value = CMDQ_WFE_WAIT | CMDQ_WFE_WAIT_VALUE;
+	inst.event = event;
+
+	return cmdq_pkt_append_command(pkt, inst);
+}
+EXPORT_SYMBOL(cmdq_pkt_wait_no_clear);
+
 int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event)
 {
 	struct cmdq_instruction inst = { {0} };
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 77e8944..5211827 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -148,6 +148,16 @@ int cmdq_pkt_mem_move(struct cmdq_pkt *pkt, phys_addr_t src_addr,
 int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event);
 
 /**
+ * cmdq_pkt_wait_no_clear() - Append wait for event command to the CMDQ packet,
+ *			      without update event to 0 after receive it.
+ * @pkt:	the CMDQ packet
+ * @event:	the desired event type to wait
+ *
+ * Return: 0 for success; else the error code is returned
+ */
+int cmdq_pkt_wait_no_clear(struct cmdq_pkt *pkt, u16 event);
+
+/**
  * cmdq_pkt_clear_event() - append clear event command to the CMDQ packet
  * @pkt:	the CMDQ packet
  * @event:	the desired event to be cleared
-- 
1.7.9.5