at91_pitreg.h revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28/* $FreeBSD: stable/11/sys/arm/at91/at91_pitreg.h 330897 2018-03-14 03:19:51Z eadler $ */ 29 30#ifndef ARM_AT91_AT91_PITREG_H 31#define ARM_AT91_AT91_PITREG_H 32 33#define PIT_MR 0x0 34#define PIT_SR 0x4 35#define PIT_PIVR 0x8 36#define PIT_PIIR 0xc 37 38/* PIT_MR */ 39#define PIT_PIV(x) (x & 0xfffff) /* periodic interval value */ 40#define PIT_CNT(x) ((x >>20) & 0xfff) /* periodic interval counter */ 41#define PIT_EN (1 << 24) /* pit enable */ 42#define PIT_IEN (1 << 25) /* pit interrupt enable */ 43 44/* PIT_SR */ 45#define PIT_PITS_DONE 1 /* interrupt done */ 46 47void at91_pit_delay(int us); 48 49#endif /* ARM_AT91_AT91_PITREG_H */ 50