1/*	$NetBSD: i2cmuxvar.h,v 1.3 2021/01/25 12:18:18 jmcneill Exp $	*/
2
3/*-
4 * Copyright (c) 2020 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _DEV_I2C_I2CMUXVAR_H_
33#define	_DEV_I2C_I2CMUXVAR_H_
34
35#include <dev/i2c/i2cvar.h>
36
37struct iicmux_softc;
38struct iicmux_bus;
39
40struct iicmux_config {
41	const char *desc;
42	void *	(*get_mux_info)(struct iicmux_softc *);
43	void *	(*get_bus_info)(struct iicmux_bus *);
44	int	(*acquire_bus)(struct iicmux_bus *, int);
45	void	(*release_bus)(struct iicmux_bus *, int);
46};
47
48struct iicmux_bus {
49	struct i2c_controller controller;
50	struct iicmux_softc *mux;
51	uintptr_t handle;
52	enum i2c_cookie_type handletype;
53	int busidx;
54	void *bus_data;
55};
56
57struct iicmux_softc {
58	device_t			sc_dev;
59	enum i2c_cookie_type		sc_handletype;
60	uintptr_t			sc_handle;
61	int				sc_i2c_mux_phandle;
62	const struct iicmux_config *	sc_config;
63	i2c_tag_t			sc_i2c_parent;
64	struct iicmux_bus *		sc_busses;
65	int				sc_nbusses;
66	void *				sc_mux_data;
67};
68
69void	iicmux_attach(struct iicmux_softc *);
70
71#endif /* _DEV_I2C_I2CMUXVAR_H_ */
72