1 files changed, 59 insertions, 0 deletions

diff --git a/include/linux/firmware/imx/ipc.h b/include/linux/firmware/imx/ipc.h
new file mode 100644
index 000000000000..6312c8cb084a
--- /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 */