1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* 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 */
|
