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iicbus_if.m (302408) iicbus_if.m (323931)
1#-
2# Copyright (c) 1998 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

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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 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

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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#
26# $FreeBSD: stable/11/sys/dev/iicbus/iicbus_if.m 281828 2015-04-21 11:50:31Z jah $
26# $FreeBSD: stable/11/sys/dev/iicbus/iicbus_if.m 323931 2017-09-22 15:53:22Z ian $
27#
28
29#include <sys/bus.h>
30#include <dev/iicbus/iic.h>
31
32INTERFACE iicbus;
33
34CODE {
27#
28
29#include <sys/bus.h>
30#include <dev/iicbus/iic.h>
31
32INTERFACE iicbus;
33
34CODE {
35 static int iicbus_nosupport(void)
36 {
37
38 return (ENODEV);
39 }
40
35 static u_int
36 iicbus_default_frequency(device_t bus, u_char speed)
37 {
38
39 return (100000);
40 }
41};
42

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64
65#
66# Send REPEATED_START condition
67#
68METHOD int repeated_start {
69 device_t dev;
70 u_char slave;
71 int timeout;
41 static u_int
42 iicbus_default_frequency(device_t bus, u_char speed)
43 {
44
45 return (100000);
46 }
47};
48

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70
71#
72# Send REPEATED_START condition
73#
74METHOD int repeated_start {
75 device_t dev;
76 u_char slave;
77 int timeout;
72};
78} DEFAULT iicbus_nosupport;
73
74#
75# Send START condition
76#
77METHOD int start {
78 device_t dev;
79 u_char slave;
80 int timeout;
79
80#
81# Send START condition
82#
83METHOD int start {
84 device_t dev;
85 u_char slave;
86 int timeout;
81};
87} DEFAULT iicbus_nosupport;
82
83#
84# Send STOP condition
85#
86METHOD int stop {
87 device_t dev;
88
89#
90# Send STOP condition
91#
92METHOD int stop {
93 device_t dev;
88};
94} DEFAULT iicbus_nosupport;
89
90#
91# Read from I2C bus
92#
93METHOD int read {
94 device_t dev;
95 char *buf;
96 int len;
97 int *bytes;
98 int last;
99 int delay;
95
96#
97# Read from I2C bus
98#
99METHOD int read {
100 device_t dev;
101 char *buf;
102 int len;
103 int *bytes;
104 int last;
105 int delay;
100};
106} DEFAULT iicbus_nosupport;
101
102#
103# Write to the I2C bus
104#
105METHOD int write {
106 device_t dev;
107 const char *buf;
108 int len;
109 int *bytes;
110 int timeout;
107
108#
109# Write to the I2C bus
110#
111METHOD int write {
112 device_t dev;
113 const char *buf;
114 int len;
115 int *bytes;
116 int timeout;
111};
117} DEFAULT iicbus_nosupport;
112
113#
114# Reset I2C bus
115#
116METHOD int reset {
117 device_t dev;
118 u_char speed;
119 u_char addr;

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119#
120# Reset I2C bus
121#
122METHOD int reset {
123 device_t dev;
124 u_char speed;
125 u_char addr;

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