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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/* $OpenBSD: i2c.h,v 1.1 2019/04/14 10:14:53 jsg Exp $ */
/*
* Copyright (c) 2017 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LINUX_I2C_H
#define _LINUX_I2C_H
#include <sys/stdint.h>
#include <sys/rwlock.h>
#include <linux/workqueue.h>
#include <linux/seq_file.h>
#include <dev/i2c/i2cvar.h>
struct i2c_algorithm;
#define I2C_FUNC_I2C 0
#define I2C_FUNC_SMBUS_EMUL 0
#define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0
#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0
#define I2C_FUNC_10BIT_ADDR 0
struct i2c_adapter {
struct i2c_controller ic;
char name[48];
const struct i2c_algorithm *algo;
void *algo_data;
int retries;
void *data;
};
#define I2C_NAME_SIZE 20
struct i2c_msg {
uint16_t addr;
uint16_t flags;
uint16_t len;
uint8_t *buf;
};
#define I2C_M_RD 0x0001
#define I2C_M_NOSTART 0x0002
#define I2C_M_STOP 0x0004
struct i2c_algorithm {
int (*master_xfer)(struct i2c_adapter *, struct i2c_msg *, int);
uint32_t (*functionality)(struct i2c_adapter *);
};
extern struct i2c_algorithm i2c_bit_algo;
struct i2c_algo_bit_data {
struct i2c_controller ic;
};
int i2c_transfer(struct i2c_adapter *, struct i2c_msg *, int);
#define i2c_add_adapter(x) 0
#define i2c_del_adapter(x)
#define __i2c_transfer(adap, msgs, num) i2c_transfer(adap, msgs, num)
static inline void *
i2c_get_adapdata(struct i2c_adapter *adap)
{
return adap->data;
}
static inline void
i2c_set_adapdata(struct i2c_adapter *adap, void *data)
{
adap->data = data;
}
int i2c_bit_add_bus(struct i2c_adapter *);
#endif
|
