/* 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, }; 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 */