Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/firmware/imx/ipc.h b/include/linux/firmware/imx/ipc.h
new file mode 100644
index 0000000..6312c8c
--- /dev/null
+++ b/include/linux/firmware/imx/ipc.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2018 NXP
+ *
+ * Header file for the IPC implementation.
+ */
+
+#ifndef _SC_IPC_H
+#define _SC_IPC_H
+
+#include <linux/device.h>
+#include <linux/types.h>
+
+#define IMX_SC_RPC_VERSION 1
+#define IMX_SC_RPC_MAX_MSG 8
+
+struct imx_sc_ipc;
+
+enum imx_sc_rpc_svc {
+ IMX_SC_RPC_SVC_UNKNOWN = 0,
+ IMX_SC_RPC_SVC_RETURN = 1,
+ IMX_SC_RPC_SVC_PM = 2,
+ IMX_SC_RPC_SVC_RM = 3,
+ IMX_SC_RPC_SVC_TIMER = 5,
+ IMX_SC_RPC_SVC_PAD = 6,
+ IMX_SC_RPC_SVC_MISC = 7,
+ IMX_SC_RPC_SVC_IRQ = 8,
+ IMX_SC_RPC_SVC_ABORT = 9
+};
+
+struct imx_sc_rpc_msg {
+ uint8_t ver;
+ uint8_t size;
+ uint8_t svc;
+ uint8_t func;
+};
+
+/*
+ * This is an function to send an RPC message over an IPC channel.
+ * It is called by client-side SCFW API function shims.
+ *
+ * @param[in] ipc IPC handle
+ * @param[in,out] msg handle to a message
+ * @param[in] have_resp response flag
+ *
+ * If have_resp is true then this function waits for a response
+ * and returns the result in msg.
+ */
+int imx_scu_call_rpc(struct imx_sc_ipc *ipc, void *msg, bool have_resp);
+
+/*
+ * This function gets the default ipc handle used by SCU
+ *
+ * @param[out] ipc sc ipc handle
+ *
+ * @return Returns an error code (0 = success, failed if < 0)
+ */
+int imx_scu_get_handle(struct imx_sc_ipc **ipc);
+#endif /* _SC_IPC_H */