| 1 | /* |
| 2 | * arch/ubicom32/lib/delay.c |
| 3 | * Ubicom32 implementation of udelay() |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * |
| 7 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 8 | * |
| 9 | * The Ubicom32 Linux Kernel Port is free software: you can redistribute |
| 10 | * it and/or modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation, either version 2 of the |
| 12 | * License, or (at your option) any later version. |
| 13 | * |
| 14 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 15 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 16 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 17 | * the GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 21 | * see <http://www.gnu.org/licenses/>. |
| 22 | * |
| 23 | * Ubicom32 implementation derived from (with many thanks): |
| 24 | * arch/m68knommu |
| 25 | * arch/blackfin |
| 26 | * arch/parisc |
| 27 | */ |
| 28 | |
| 29 | #include <linux/module.h> |
| 30 | #include <asm/param.h> |
| 31 | #include <asm/delay.h> |
| 32 | #include <asm/ip5000.h> |
| 33 | |
| 34 | /* |
| 35 | * read_current_timer() |
| 36 | * Return the current value of sysval. |
| 37 | */ |
| 38 | int __devinit read_current_timer(unsigned long *timer_val) |
| 39 | { |
| 40 | *timer_val = (long)(UBICOM32_IO_TIMER->sysval); |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | |
| 45 | void udelay(unsigned long usecs) |
| 46 | { |
| 47 | _udelay(usecs); |
| 48 | } |
| 49 | EXPORT_SYMBOL(udelay); |
| 50 | |
