v4.19.13 snapshot.
diff --git a/include/linux/soc/qcom/apr.h b/include/linux/soc/qcom/apr.h
new file mode 100644
index 0000000..c5d52e2
--- /dev/null
+++ b/include/linux/soc/qcom/apr.h
@@ -0,0 +1,128 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __QCOM_APR_H_
+#define __QCOM_APR_H_
+
+#include <linux/spinlock.h>
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <dt-bindings/soc/qcom,apr.h>
+
+extern struct bus_type aprbus;
+
+#define APR_HDR_LEN(hdr_len) ((hdr_len)/4)
+
+/*
+ * HEADER field
+ * version:0:3
+ * header_size : 4:7
+ * message_type : 8:9
+ * reserved: 10:15
+ */
+#define APR_HDR_FIELD(msg_type, hdr_len, ver)\
+ (((msg_type & 0x3) << 8) | ((hdr_len & 0xF) << 4) | (ver & 0xF))
+
+#define APR_HDR_SIZE sizeof(struct apr_hdr)
+#define APR_SEQ_CMD_HDR_FIELD APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD, \
+ APR_HDR_LEN(APR_HDR_SIZE), \
+ APR_PKT_VER)
+/* Version */
+#define APR_PKT_VER 0x0
+
+/* Command and Response Types */
+#define APR_MSG_TYPE_EVENT 0x0
+#define APR_MSG_TYPE_CMD_RSP 0x1
+#define APR_MSG_TYPE_SEQ_CMD 0x2
+#define APR_MSG_TYPE_NSEQ_CMD 0x3
+#define APR_MSG_TYPE_MAX 0x04
+
+/* APR Basic Response Message */
+#define APR_BASIC_RSP_RESULT 0x000110E8
+#define APR_RSP_ACCEPTED 0x000100BE
+
+struct aprv2_ibasic_rsp_result_t {
+ uint32_t opcode;
+ uint32_t status;
+};
+
+/* hdr field Ver [0:3], Size [4:7], Message type [8:10] */
+#define APR_HDR_FIELD_VER(h) (h & 0x000F)
+#define APR_HDR_FIELD_SIZE(h) ((h & 0x00F0) >> 4)
+#define APR_HDR_FIELD_SIZE_BYTES(h) (((h & 0x00F0) >> 4) * 4)
+#define APR_HDR_FIELD_MT(h) ((h & 0x0300) >> 8)
+
+struct apr_hdr {
+ uint16_t hdr_field;
+ uint16_t pkt_size;
+ uint8_t src_svc;
+ uint8_t src_domain;
+ uint16_t src_port;
+ uint8_t dest_svc;
+ uint8_t dest_domain;
+ uint16_t dest_port;
+ uint32_t token;
+ uint32_t opcode;
+} __packed;
+
+struct apr_pkt {
+ struct apr_hdr hdr;
+ uint8_t payload[];
+};
+
+struct apr_resp_pkt {
+ struct apr_hdr hdr;
+ void *payload;
+ int payload_size;
+};
+
+/* Bits 0 to 15 -- Minor version, Bits 16 to 31 -- Major version */
+#define APR_SVC_MAJOR_VERSION(v) ((v >> 16) & 0xFF)
+#define APR_SVC_MINOR_VERSION(v) (v & 0xFF)
+
+struct apr_device {
+ struct device dev;
+ uint16_t svc_id;
+ uint16_t domain_id;
+ uint32_t version;
+ char name[APR_NAME_SIZE];
+ spinlock_t lock;
+ struct list_head node;
+};
+
+#define to_apr_device(d) container_of(d, struct apr_device, dev)
+
+struct apr_driver {
+ int (*probe)(struct apr_device *sl);
+ int (*remove)(struct apr_device *sl);
+ int (*callback)(struct apr_device *a,
+ struct apr_resp_pkt *d);
+ struct device_driver driver;
+ const struct apr_device_id *id_table;
+};
+
+#define to_apr_driver(d) container_of(d, struct apr_driver, driver)
+
+/*
+ * use a macro to avoid include chaining to get THIS_MODULE
+ */
+#define apr_driver_register(drv) __apr_driver_register(drv, THIS_MODULE)
+
+int __apr_driver_register(struct apr_driver *drv, struct module *owner);
+void apr_driver_unregister(struct apr_driver *drv);
+
+/**
+ * module_apr_driver() - Helper macro for registering a aprbus driver
+ * @__aprbus_driver: aprbus_driver struct
+ *
+ * Helper macro for aprbus drivers which do not do anything special in
+ * module init/exit. This eliminates a lot of boilerplate. Each module
+ * may only use this macro once, and calling it replaces module_init()
+ * and module_exit()
+ */
+#define module_apr_driver(__apr_driver) \
+ module_driver(__apr_driver, apr_driver_register, \
+ apr_driver_unregister)
+
+int apr_send_pkt(struct apr_device *adev, struct apr_pkt *pkt);
+
+#endif /* __QCOM_APR_H_ */