1/*-
2 * Copyright (c) 2014 Ian Lepore <ian@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD$
26 */
27
28#ifndef DEV_FDT_CLOCK_H
29#define DEV_FDT_CLOCK_H
30
31#include "fdt_clock_if.h"
32
33/*
34 * Get info about the Nth clock listed in consumer's "clocks" property.
35 *
36 * Returns 0 on success, ENXIO if clock #n not found.
37 */
38int fdt_clock_get_info(device_t consumer, int n, struct fdt_clock_info *info);
39
40/*
41 * Look up "clocks" property in consumer's fdt data and enable or disable all
42 * configured clocks.
43 */
44int fdt_clock_enable_all(device_t consumer);
45int fdt_clock_disable_all(device_t consumer);
46
47/*
48 * [Un]register the given device instance as a driver that implements the
49 * fdt_clock interface.
50 */
51void fdt_clock_register_provider(device_t provider);
52void fdt_clock_unregister_provider(device_t provider);
53
54#endif /* DEV_FDT_CLOCK_H */
55
56