1/*-
 2 * SPDX-License-Identifier: BSD-2-Clause
 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
28#ifndef _OFW_PWM_H_
29#define _OFW_PWM_H_
30
31#include <dev/ofw/openfirm.h>
32
33struct pwm_channel {
34	device_t	dev;
35	u_int		channel;
36	uint64_t	period;
37	uint64_t	duty;
38	uint32_t	flags;
39	bool		enabled;
40};
41typedef struct pwm_channel *pwm_channel_t;
42
43int pwm_get_by_ofw_propidx(device_t consumer, phandle_t node,
44    const char *prop_name, int idx, pwm_channel_t *channel);
45int pwm_get_by_ofw_idx(device_t consumer, phandle_t node, int idx,
46    pwm_channel_t *out_channel);
47int pwm_get_by_ofw_property(device_t consumer, phandle_t node,
48    const char *prop_name, pwm_channel_t *out_channel);
49int pwm_get_by_ofw_name(device_t consumer, phandle_t node, const char *name,
50    pwm_channel_t *out_channel);
51
52#endif /* _OFW_PWM_H_ */