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 *
| 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 *
|
27 */
28#ifndef __IICONF_H
29#define __IICONF_H
30
31#include <sys/queue.h>
32
33#define IICPRI (PZERO+8) /* XXX sleep/wakeup queue priority */
34
35#define n(flags) (~(flags) & (flags))
36
37#define LSB 0x1
38
39/*
40 * How tsleep() is called in iic_request_bus().
41 */
42#define IIC_DONTWAIT 0
43#define IIC_NOINTR 0
44#define IIC_WAIT 0x1
45#define IIC_INTR 0x2
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 */
86#define IIC_ENOACK 0x2 /* ack not received until timeout */
87#define IIC_ETIMEOUT 0x3 /* timeout */
88#define IIC_EBUSBSY 0x4 /* bus busy */
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
95/*
96 * ivars codes
97 */
98#define IICBUS_IVAR_ADDR 0x1 /* I2C address of the device */
99
100extern int iicbus_request_bus(device_t, device_t, int);
101extern int iicbus_release_bus(device_t, device_t);
102extern device_t iicbus_alloc_bus(device_t);
103
104extern void iicbus_intr(device_t, int, char *);
105
106extern int iicbus_null_repeated_start(device_t, u_char);
107extern int iicbus_null_callback(device_t, int, caddr_t);
108
109#define iicbus_reset(bus,speed,addr,oldaddr) \
110 (IICBUS_RESET(device_get_parent(bus), speed, addr, oldaddr))
111
112/* basic I2C operations */
113extern int iicbus_started(device_t);
114extern int iicbus_start(device_t, u_char, int);
115extern int iicbus_stop(device_t);
116extern int iicbus_repeated_start(device_t, u_char, int);
117extern int iicbus_write(device_t, char *, int, int *, int);
118extern int iicbus_read(device_t, char *, int, int *, int, int);
119
120/* single byte read/write functions, start/stop not managed */
121extern int iicbus_write_byte(device_t, char, int);
122extern int iicbus_read_byte(device_t, char *, int);
123
124/* Read/write operations with start/stop conditions managed */
125extern int iicbus_block_write(device_t, u_char, char *, int, int *);
126extern int iicbus_block_read(device_t, u_char, char *, int, int *);
127
128extern u_char iicbus_get_addr(device_t);
129
| 27 */
28#ifndef __IICONF_H
29#define __IICONF_H
30
31#include <sys/queue.h>
32
33#define IICPRI (PZERO+8) /* XXX sleep/wakeup queue priority */
34
35#define n(flags) (~(flags) & (flags))
36
37#define LSB 0x1
38
39/*
40 * How tsleep() is called in iic_request_bus().
41 */
42#define IIC_DONTWAIT 0
43#define IIC_NOINTR 0
44#define IIC_WAIT 0x1
45#define IIC_INTR 0x2
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 */
86#define IIC_ENOACK 0x2 /* ack not received until timeout */
87#define IIC_ETIMEOUT 0x3 /* timeout */
88#define IIC_EBUSBSY 0x4 /* bus busy */
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
95/*
96 * ivars codes
97 */
98#define IICBUS_IVAR_ADDR 0x1 /* I2C address of the device */
99
100extern int iicbus_request_bus(device_t, device_t, int);
101extern int iicbus_release_bus(device_t, device_t);
102extern device_t iicbus_alloc_bus(device_t);
103
104extern void iicbus_intr(device_t, int, char *);
105
106extern int iicbus_null_repeated_start(device_t, u_char);
107extern int iicbus_null_callback(device_t, int, caddr_t);
108
109#define iicbus_reset(bus,speed,addr,oldaddr) \
110 (IICBUS_RESET(device_get_parent(bus), speed, addr, oldaddr))
111
112/* basic I2C operations */
113extern int iicbus_started(device_t);
114extern int iicbus_start(device_t, u_char, int);
115extern int iicbus_stop(device_t);
116extern int iicbus_repeated_start(device_t, u_char, int);
117extern int iicbus_write(device_t, char *, int, int *, int);
118extern int iicbus_read(device_t, char *, int, int *, int, int);
119
120/* single byte read/write functions, start/stop not managed */
121extern int iicbus_write_byte(device_t, char, int);
122extern int iicbus_read_byte(device_t, char *, int);
123
124/* Read/write operations with start/stop conditions managed */
125extern int iicbus_block_write(device_t, u_char, char *, int, int *);
126extern int iicbus_block_read(device_t, u_char, char *, int, int *);
127
128extern u_char iicbus_get_addr(device_t);
129
|