1/*-
2 * Copyright (c) 2009 Sylvestre Gallon.  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
26/* $FreeBSD$ */
27
28#ifndef ARM_AT91_AT91_PITREG_H
29#define ARM_AT91_AT91_PITREG_H
30
31#define PIT_MR		0x0
32#define PIT_SR		0x4
33#define PIT_PIVR	0x8
34#define PIT_PIIR	0xc
35
36/* PIT_MR */
37#define PIT_PIV(x)	(x & 0xfffff) /* periodic interval value */
38#define PIT_CNT(x)	((x >>20) & 0xfff) /* periodic interval counter */
39#define PIT_EN		(1 << 24) /* pit enable */
40#define PIT_IEN		(1 << 25) /* pit interrupt enable */
41
42/* PIT_SR */
43#define PIT_PITS_DONE	1 /* interrupt done */
44
45void at91_pit_delay(int us);
46
47#endif /* ARM_AT91_AT91_PITREG_H */
48