1/*-
2 * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
3 * All rights reserved.
4 *
5 * Developed by Semihalf.
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 * 3. Neither the name of MARVELL nor the names of contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD$
32 */
33
34#ifndef _TWSI_H_
35#define	_TWSI_H_
36
37struct twsi_baud_rate {
38	uint32_t	raw;
39	int		param;
40	int		m;
41	int		n;
42};
43
44struct twsi_softc {
45	device_t	dev;
46	struct resource	*res[1];	/* SYS_RES_MEMORY */
47	struct mtx	mutex;
48	device_t	iicbus;
49
50	bus_size_t	reg_data;
51	bus_size_t	reg_slave_addr;
52	bus_size_t	reg_slave_ext_addr;
53	bus_size_t	reg_control;
54	bus_size_t	reg_status;
55	bus_size_t	reg_baud_rate;
56	bus_size_t	reg_soft_reset;
57	struct twsi_baud_rate  baud_rate[IIC_FASTEST + 1];
58};
59
60DECLARE_CLASS(twsi_driver);
61
62#define	TWSI_BAUD_RATE_PARAM(M,N)	((((M) << 3) | ((N) & 0x7)) & 0x7f)
63
64int twsi_attach(device_t);
65int twsi_detach(device_t);
66
67#endif /* _TWSI_H_ */
68