2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2019 Ian Lepore <ian@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
38 PWMBUS_IVAR_CHANNEL, /* Channel used by child dev */
41 #define PWMBUS_ACCESSOR(A, B, T) \
43 pwmbus_get_ ## A(device_t dev, T *t) \
45 return BUS_READ_IVAR(device_get_parent(dev), dev, \
46 PWMBUS_IVAR_ ## B, (uintptr_t *) t); \
49 pwmbus_set_ ## A(device_t dev, T t) \
51 return BUS_WRITE_IVAR(device_get_parent(dev), dev, \
52 PWMBUS_IVAR_ ## B, (uintptr_t) t); \
55 PWMBUS_ACCESSOR(channel, CHANNEL, u_int)
57 extern driver_t pwmbus_driver;
58 extern devclass_t pwmbus_devclass;
59 extern driver_t ofw_pwmbus_driver;
60 extern devclass_t ofw_pwmbus_devclass;
62 #endif /* _PWMBUS_H_ */