72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
/* 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;
|
|
};
|
|
|
|
#ifdef CONFIG_IMX_SCU
|
|
/*
|
|
* 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);
|
|
#else
|
|
static inline int imx_scu_call_rpc(struct imx_sc_ipc *ipc, void *msg,
|
|
bool have_resp)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int imx_scu_get_handle(struct imx_sc_ipc **ipc)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
#endif
|
|
#endif /* _SC_IPC_H */
|