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Diffstat (limited to 'include/linux/mailbox_client.h')
-rw-r--r--include/linux/mailbox_client.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mailbox_client.h b/include/linux/mailbox_client.h
index 307d9cab2026..1726ccbd8009 100644
--- a/include/linux/mailbox_client.h
+++ b/include/linux/mailbox_client.h
@@ -25,6 +25,8 @@ struct mbox_chan;
* if the client receives some ACK packet for transmission.
* Unused if the controller already has TX_Done/RTR IRQ.
* @rx_callback: Atomic callback to provide client the data received
+ * @tx_prepare: Atomic callback to ask client to prepare the payload
+ * before initiating the transmission if required.
* @tx_done: Atomic callback to tell client of data transmission
*/
struct mbox_client {
@@ -34,6 +36,7 @@ struct mbox_client {
bool knows_txdone;
void (*rx_callback)(struct mbox_client *cl, void *mssg);
+ void (*tx_prepare)(struct mbox_client *cl, void *mssg);
void (*tx_done)(struct mbox_client *cl, void *mssg, int r);
};