diff options
Diffstat (limited to 'arch/mn10300/lib/delay.c')
| -rw-r--r-- | arch/mn10300/lib/delay.c | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/arch/mn10300/lib/delay.c b/arch/mn10300/lib/delay.c deleted file mode 100644 index 8e7ceb8ba33d..000000000000 --- a/arch/mn10300/lib/delay.c +++ /dev/null @@ -1,51 +0,0 @@ -/* MN10300 Short delay interpolation routines - * - * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/delay.h> -#include <asm/div64.h> - -/* - * basic delay loop - */ -void __delay(unsigned long loops) -{ - int d0; - - asm volatile( - " bra 1f \n" - " .align 4 \n" - "1: bra 2f \n" - " .align 4 \n" - "2: add -1,%0 \n" - " bne 2b \n" - : "=&d" (d0) - : "0" (loops) - : "cc"); -} -EXPORT_SYMBOL(__delay); - -/* - * handle a delay specified in terms of microseconds - */ -void __udelay(unsigned long usecs) -{ - unsigned long start, stop, cnt; - - /* usecs * CLK / 1E6 */ - stop = __muldiv64u(usecs, MN10300_TSCCLK, 1000000); - start = TMTSCBC; - - do { - cnt = start - TMTSCBC; - } while (cnt < stop); -} -EXPORT_SYMBOL(__udelay); |