1/*-
2 * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: releng/11.0/sys/arm/at91/at91_twiio.h 185265 2008-11-25 00:13:26Z imp $
26 */
27
28#ifndef _ARM_AT91_AT91_TWIIO_H
29#define _ARM_AT91_AT91_TWIIO_H
30
31#include <sys/ioccom.h>
32
33struct at91_twi_io
34{
35	int	dadr;			/* Device address */
36	int	type;			/* read/write */
37#define TWI_IO_READ_MASTER	1
38#define TWI_IO_WRITE_MASTER	2
39	int	iadrsz;			/* Internal addr size */
40	uint32_t iadr;			/* Interbak addr */
41	size_t  xfer_len;		/* Size to transfer */
42	caddr_t xfer_buf;		/* buffer for xfer */
43};
44
45struct at91_twi_clock
46{
47	int	ckdiv;			/* Clock divider */
48	int	high_rate;		/* rate of clock high period */
49	int	low_rate;		/* rate of clock low period */
50};
51
52/** TWIIOCXFER: Do a two-wire transfer
53 */
54#define TWIIOCXFER	_IOW('x', 1, struct at91_twi_io)
55
56/** TWIIOCSETCLOCK: Sets the clocking parameters for this operation.
57 */
58#define TWIIOCSETCLOCK _IOW('x', 2, struct at91_twi_clock)
59
60#endif /* !_ARM_AT91_AT91_TWIIO_H */
61
62
63