1/*-
2 * Copyright (c) 1998, 2001 Nicolas Souchu
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
| 1/*-
2 * Copyright (c) 1998, 2001 Nicolas Souchu
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
|
46
47/*
48 * i2c modes
49 */
50#define IIC_MASTER 0x1
51#define IIC_SLAVE 0x2
52#define IIC_POLLED 0x4
53
54/*
55 * i2c speed
56 */
57#define IIC_UNKNOWN 0x0
58#define IIC_SLOW 0x1
59#define IIC_FAST 0x2
60#define IIC_FASTEST 0x3
61
62#define IIC_LAST_READ 0x1
63
64/*
65 * callback index
66 */
67#define IIC_REQUEST_BUS 0x1
68#define IIC_RELEASE_BUS 0x2
69
70/*
71 * interrupt events
72 */
73#define INTR_GENERAL 0x1 /* general call received */
74#define INTR_START 0x2 /* the I2C interface is addressed */
75#define INTR_STOP 0x3 /* stop condition received */
76#define INTR_RECEIVE 0x4 /* character received */
77#define INTR_TRANSMIT 0x5 /* character to transmit */
78#define INTR_ERROR 0x6 /* error */
79#define INTR_NOACK 0x7 /* no ack from master receiver */
80
81/*
82 * adapter layer errors
83 */
84#define IIC_NOERR 0x0 /* no error occured */
85#define IIC_EBUSERR 0x1 /* bus error (hardware not in expected state) */
86#define IIC_ENOACK 0x2 /* ack not received until timeout */
87#define IIC_ETIMEOUT 0x3 /* timeout */
88#define IIC_EBUSBSY 0x4 /* bus busy (reserved by another client) */
89#define IIC_ESTATUS 0x5 /* status error */
90#define IIC_EUNDERFLOW 0x6 /* slave ready for more data */
91#define IIC_EOVERFLOW 0x7 /* too much data */
92#define IIC_ENOTSUPP 0x8 /* request not supported */
93#define IIC_ENOADDR 0x9 /* no address assigned to the interface */
94#define IIC_ERESOURCE 0xa /* resources (memory, whatever) unavailable */
95
96/*
97 * Note that all iicbus functions return IIC_Exxxxx status values,
98 * except iic2errno() (obviously) and iicbus_started() (returns bool).
99 */
100extern int iic2errno(int);
101extern int iicbus_request_bus(device_t, device_t, int);
102extern int iicbus_release_bus(device_t, device_t);
103extern device_t iicbus_alloc_bus(device_t);
104
105extern void iicbus_intr(device_t, int, char *);
106
107extern int iicbus_null_repeated_start(device_t, u_char);
108extern int iicbus_null_callback(device_t, int, caddr_t);
109
110#define iicbus_reset(bus,speed,addr,oldaddr) \
111 (IICBUS_RESET(device_get_parent(bus), speed, addr, oldaddr))
112
113/* basic I2C operations */
114extern int iicbus_started(device_t);
115extern int iicbus_start(device_t, u_char, int);
116extern int iicbus_stop(device_t);
117extern int iicbus_repeated_start(device_t, u_char, int);
118extern int iicbus_write(device_t, const char *, int, int *, int);
119extern int iicbus_read(device_t, char *, int, int *, int, int);
120
121/* single byte read/write functions, start/stop not managed */
122extern int iicbus_write_byte(device_t, char, int);
123extern int iicbus_read_byte(device_t, char *, int);
124
125/* Read/write operations with start/stop conditions managed */
126extern int iicbus_block_write(device_t, u_char, char *, int, int *);
127extern int iicbus_block_read(device_t, u_char, char *, int, int *);
128
129/* vectors of iic operations to pass to bridge */
130int iicbus_transfer(device_t bus, struct iic_msg *msgs, uint32_t nmsgs);
131int iicbus_transfer_gen(device_t bus, struct iic_msg *msgs, uint32_t nmsgs);
132
133#define IICBUS_MODVER 1
134#define IICBUS_MINVER 1
135#define IICBUS_MAXVER 1
136#define IICBUS_PREFVER IICBUS_MODVER
137
138extern driver_t iicbb_driver;
139extern devclass_t iicbb_devclass;
140
141#define IICBB_MODVER 1
142#define IICBB_MINVER 1
143#define IICBB_MAXVER 1
144#define IICBB_PREFVER IICBB_MODVER
145
146#endif
| 47
48/*
49 * i2c modes
50 */
51#define IIC_MASTER 0x1
52#define IIC_SLAVE 0x2
53#define IIC_POLLED 0x4
54
55/*
56 * i2c speed
57 */
58#define IIC_UNKNOWN 0x0
59#define IIC_SLOW 0x1
60#define IIC_FAST 0x2
61#define IIC_FASTEST 0x3
62
63#define IIC_LAST_READ 0x1
64
65/*
66 * callback index
67 */
68#define IIC_REQUEST_BUS 0x1
69#define IIC_RELEASE_BUS 0x2
70
71/*
72 * interrupt events
73 */
74#define INTR_GENERAL 0x1 /* general call received */
75#define INTR_START 0x2 /* the I2C interface is addressed */
76#define INTR_STOP 0x3 /* stop condition received */
77#define INTR_RECEIVE 0x4 /* character received */
78#define INTR_TRANSMIT 0x5 /* character to transmit */
79#define INTR_ERROR 0x6 /* error */
80#define INTR_NOACK 0x7 /* no ack from master receiver */
81
82/*
83 * adapter layer errors
84 */
85#define IIC_NOERR 0x0 /* no error occured */
86#define IIC_EBUSERR 0x1 /* bus error (hardware not in expected state) */
87#define IIC_ENOACK 0x2 /* ack not received until timeout */
88#define IIC_ETIMEOUT 0x3 /* timeout */
89#define IIC_EBUSBSY 0x4 /* bus busy (reserved by another client) */
90#define IIC_ESTATUS 0x5 /* status error */
91#define IIC_EUNDERFLOW 0x6 /* slave ready for more data */
92#define IIC_EOVERFLOW 0x7 /* too much data */
93#define IIC_ENOTSUPP 0x8 /* request not supported */
94#define IIC_ENOADDR 0x9 /* no address assigned to the interface */
95#define IIC_ERESOURCE 0xa /* resources (memory, whatever) unavailable */
96
97/*
98 * Note that all iicbus functions return IIC_Exxxxx status values,
99 * except iic2errno() (obviously) and iicbus_started() (returns bool).
100 */
101extern int iic2errno(int);
102extern int iicbus_request_bus(device_t, device_t, int);
103extern int iicbus_release_bus(device_t, device_t);
104extern device_t iicbus_alloc_bus(device_t);
105
106extern void iicbus_intr(device_t, int, char *);
107
108extern int iicbus_null_repeated_start(device_t, u_char);
109extern int iicbus_null_callback(device_t, int, caddr_t);
110
111#define iicbus_reset(bus,speed,addr,oldaddr) \
112 (IICBUS_RESET(device_get_parent(bus), speed, addr, oldaddr))
113
114/* basic I2C operations */
115extern int iicbus_started(device_t);
116extern int iicbus_start(device_t, u_char, int);
117extern int iicbus_stop(device_t);
118extern int iicbus_repeated_start(device_t, u_char, int);
119extern int iicbus_write(device_t, const char *, int, int *, int);
120extern int iicbus_read(device_t, char *, int, int *, int, int);
121
122/* single byte read/write functions, start/stop not managed */
123extern int iicbus_write_byte(device_t, char, int);
124extern int iicbus_read_byte(device_t, char *, int);
125
126/* Read/write operations with start/stop conditions managed */
127extern int iicbus_block_write(device_t, u_char, char *, int, int *);
128extern int iicbus_block_read(device_t, u_char, char *, int, int *);
129
130/* vectors of iic operations to pass to bridge */
131int iicbus_transfer(device_t bus, struct iic_msg *msgs, uint32_t nmsgs);
132int iicbus_transfer_gen(device_t bus, struct iic_msg *msgs, uint32_t nmsgs);
133
134#define IICBUS_MODVER 1
135#define IICBUS_MINVER 1
136#define IICBUS_MAXVER 1
137#define IICBUS_PREFVER IICBUS_MODVER
138
139extern driver_t iicbb_driver;
140extern devclass_t iicbb_devclass;
141
142#define IICBB_MODVER 1
143#define IICBB_MINVER 1
144#define IICBB_MAXVER 1
145#define IICBB_PREFVER IICBB_MODVER
146
147#endif
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