1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/*-
* Copyright (c) 2006 M. Warner Losh. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/sys/arm/at91/at91_twiio.h,v 1.2.2.1.6.1 2010/12/21 17:09:25 kensmith Exp $
*/
#ifndef _ARM_AT91_AT91_TWIIO_H
#define _ARM_AT91_AT91_TWIIO_H
#include <sys/ioccom.h>
struct at91_twi_io
{
int dadr; /* Device address */
int type; /* read/write */
#define TWI_IO_READ_MASTER 1
#define TWI_IO_WRITE_MASTER 2
int iadrsz; /* Internal addr size */
uint32_t iadr; /* Interbak addr */
size_t xfer_len; /* Size to transfer */
caddr_t xfer_buf; /* buffer for xfer */
};
struct at91_twi_clock
{
int ckdiv; /* Clock divider */
int high_rate; /* rate of clock high period */
int low_rate; /* rate of clock low period */
};
/** TWIIOCXFER: Do a two-wire transfer
*/
#define TWIIOCXFER _IOW('x', 1, struct at91_twi_io)
/** TWIIOCSETCLOCK: Sets the clocking parameters for this operation.
*/
#define TWIIOCSETCLOCK _IOW('x', 2, struct at91_twi_clock)
#endif /* !_ARM_AT91_AT91_TWIIO_H */
|
