Merge "mailbox: Add snapshot of MSM QMP driver"

drivers/mailbox/Kconfig

@@ -227,4 +227,12 @@ config ZYNQMP_IPI_MBOX
 	  message to the IPI buffer and will access the IPI control
 	  registers to kick the other processor or enquire status.
 
+config MSM_QMP
+	tristate "QTI Mailbox Protocol(QMP)"
+	help
+	  Say yes to add support for the QTI Mailbox Protocol mailbox driver.
+	  QMP is a lightweight communication protocol for sending messages to
+	  a remote processor. This protocol fits into the Generic Mailbox
+	  Framework. QMP uses a mailbox located in shared memory.
+
 endif

drivers/mailbox/Makefile

@@ -48,3 +48,5 @@ obj-$(CONFIG_STM32_IPCC) 	+= stm32-ipcc.o
 obj-$(CONFIG_MTK_CMDQ_MBOX)	+= mtk-cmdq-mailbox.o
 
 obj-$(CONFIG_ZYNQMP_IPI_MBOX)	+= zynqmp-ipi-mailbox.o
+
+obj-$(CONFIG_MSM_QMP)   += msm_qmp.o

include/linux/mailbox/qmp.h

@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _QMP_H_
+#define _QMP_H_
+
+#include <linux/types.h>
+
+/**
+ * struct qmp_pkt - Packet structure to be used for TX and RX with QMP
+ * @size	size of data
+ * @data	Buffer holding data of this packet
+ */
+struct qmp_pkt {
+	u32 size;
+	void *data;
+};
+
+#endif /* _QMP_H_ */