1 #-
2 # SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 #
4 # Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org>
5 #
6 # Redistribution and use in source and binary forms, with or without
7 # modification, are permitted provided that the following conditions
8 # are met:
9 # 1. Redistributions of source code must retain the above copyright
10 # notice, this list of conditions and the following disclaimer.
11 # 2. Redistributions in binary form must reproduce the above copyright
12 # notice, this list of conditions and the following disclaimer in the
13 # documentation and/or other materials provided with the distribution.
14 #
15 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 # SUCH DAMAGE.
26 #
27 # $FreeBSD$
28 #
29
30 #include <sys/bus.h>
31
32 INTERFACE pwmbus;
33
34 CODE {
35 static int
36 pwm_default_set_flags(device_t bus, u_int channel, uint32_t flags)
37 {
38
39 return (EOPNOTSUPP);
40 }
41
42 static int
43 pwm_default_get_flags(device_t bus, u_int channel, uint32_t *flags)
44 {
45
46 *flags = 0;
47 return (0);
48 }
49 };
50
51 #
52 # Config the period (Total number of cycle in ns) and
53 # the duty (active number of cycle in ns)
54 #
55 METHOD int channel_config {
56 device_t bus;
57 u_int channel;
58 u_int period;
59 u_int duty;
60 };
61
62 #
63 # Get the period (Total number of cycle in ns) and
64 # the duty (active number of cycle in ns)
65 #
66 METHOD int channel_get_config {
67 device_t bus;
68 u_int channel;
69 u_int *period;
70 u_int *duty;
71 };
72
73 #
74 # Set the flags
75 #
76 METHOD int channel_set_flags {
77 device_t bus;
78 u_int channel;
79 uint32_t flags;
80 } DEFAULT pwm_default_set_flags;
81
82 #
83 # Get the flags
84 #
85 METHOD int channel_get_flags {
86 device_t bus;
87 u_int channel;
88 uint32_t *flags;
89 } DEFAULT pwm_default_get_flags;
90
91 #
92 # Enable the pwm output
93 #
94 METHOD int channel_enable {
95 device_t bus;
96 u_int channel;
97 bool enable;
98 };
99
100 #
101 # Is the pwm output enabled
102 #
103 METHOD int channel_is_enabled {
104 device_t bus;
105 u_int channel;
106 bool *enabled;
107 };
108
109 #
110 # Get the number of channels
111 #
112 METHOD int channel_count {
113 device_t bus;
114 u_int *nchannel;
115 };
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