1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2018 Emmanuel Vadot <manu@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31#ifndef _OFW_PWM_H_
32#define _OFW_PWM_H_
33
34#include <dev/ofw/openfirm.h>
35
36struct pwm_channel {
37	device_t	dev;
38	u_int		channel;
39	uint64_t	period;
40	uint64_t	duty;
41	uint32_t	flags;
42	bool		enabled;
43};
44typedef struct pwm_channel *pwm_channel_t;
45
46int pwm_get_by_ofw_propidx(device_t consumer, phandle_t node,
47    const char *prop_name, int idx, pwm_channel_t *channel);
48int pwm_get_by_ofw_idx(device_t consumer, phandle_t node, int idx,
49    pwm_channel_t *out_channel);
50int pwm_get_by_ofw_property(device_t consumer, phandle_t node,
51    const char *prop_name, pwm_channel_t *out_channel);
52int pwm_get_by_ofw_name(device_t consumer, phandle_t node, const char *name,
53    pwm_channel_t *out_channel);
54
55#endif /* _OFW_PWM_H_ */
56