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 45 void at91_pit_delay(int us); 46 47 #endif /* ARM_AT91_AT91_PITREG_H */ 48