1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/mhi_ep.h b/include/linux/mhi_ep.h
index f6383a57a872..852f331f03fd 100644
--- a/include/linux/mhi_ep.h
+++ b/include/linux/mhi_ep.h
@@ -304,4 +304,20 @@ bool mhi_ep_queue_is_empty(struct mhi_ep_device *mhi_dev, enum dma_data_directio
  */
 int mhi_ep_queue_skb(struct mhi_ep_device *mhi_dev, struct sk_buff *skb);
 
+/**
+ * mhi_ep_queue_buf - Transfer buffer contents to host over MHI Endpoint
+ * @mhi_dev: Device associated with the DL channel
+ * @buf: Buffer to be queued. On success, ownership passes to the MHI stack;
+ *       the caller must not free @buf until the DL transfer callback fires
+ *       with result->buf_addr equal to @buf. On failure, the caller retains
+ *       ownership and must free @buf.
+ *       Note: if @len spans multiple host DL TREs, the DL transfer callback
+ *       fires once per TRE, each time with result->buf_addr equal to @buf.
+ * @len: Size of the buffer
+ *
+ * Return: 0 if the buffer contents have been transferred successfully, a
+ * negative error code otherwise.
+ */
+int mhi_ep_queue_buf(struct mhi_ep_device *mhi_dev, void *buf, size_t len);
+
 #endif