FreeBSD/Linux Kernel Cross Reference
sys/dev/pwm/ofw_pwm.h
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 #ifndef _OFW_PWM_H_
31 #define _OFW_PWM_H_
32
33 #include <dev/ofw/openfirm.h>
34
35 struct pwm_channel {
36 device_t dev;
37 u_int channel;
38 uint64_t period;
39 uint64_t duty;
40 uint32_t flags;
41 bool enabled;
42 };
43 typedef struct pwm_channel *pwm_channel_t;
44
45 int pwm_get_by_ofw_propidx(device_t consumer, phandle_t node,
46 const char *prop_name, int idx, pwm_channel_t *channel);
47 int pwm_get_by_ofw_idx(device_t consumer, phandle_t node, int idx,
48 pwm_channel_t *out_channel);
49 int pwm_get_by_ofw_property(device_t consumer, phandle_t node,
50 const char *prop_name, pwm_channel_t *out_channel);
51 int pwm_get_by_ofw_name(device_t consumer, phandle_t node, const char *name,
52 pwm_channel_t *out_channel);
53
54 #endif /* _OFW_PWM_H_ */
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