summaryrefslogtreecommitdiffstats
path: root/include/asm-blackfin/delay.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-blackfin/delay.h')
-rw-r--r--include/asm-blackfin/delay.h62
1 files changed, 0 insertions, 62 deletions
diff --git a/include/asm-blackfin/delay.h b/include/asm-blackfin/delay.h
deleted file mode 100644
index 473a8113277f..000000000000
--- a/include/asm-blackfin/delay.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * delay.h - delay functions
- *
- * Copyright (c) 2004-2007 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#ifndef __ASM_DELAY_H__
-#define __ASM_DELAY_H__
-
-#include <asm/mach/anomaly.h>
-
-static inline void __delay(unsigned long loops)
-{
- if (ANOMALY_05000312) {
- /* Interrupted loads to loop registers -> bad */
- unsigned long tmp;
- __asm__ __volatile__(
- "[--SP] = LC0;"
- "[--SP] = LT0;"
- "[--SP] = LB0;"
- "LSETUP (1f,1f) LC0 = %1;"
- "1: NOP;"
- /* We take advantage of the fact that LC0 is 0 at
- * the end of the loop. Otherwise we'd need some
- * NOPs after the CLI here.
- */
- "CLI %0;"
- "LB0 = [SP++];"
- "LT0 = [SP++];"
- "LC0 = [SP++];"
- "STI %0;"
- : "=d" (tmp)
- : "a" (loops)
- );
- } else
- __asm__ __volatile__ (
- "LSETUP(1f, 1f) LC0 = %0;"
- "1: NOP;"
- :
- : "a" (loops)
- : "LT0", "LB0", "LC0"
- );
-}
-
-#include <linux/param.h> /* needed for HZ */
-
-/*
- * Use only for very small delays ( < 1 msec). Should probably use a
- * lookup table, really, as the multiplications take much too long with
- * short delays. This is a "reasonable" implementation, though (and the
- * first constant multiplications gets optimized away if the delay is
- * a constant)
- */
-static inline void udelay(unsigned long usecs)
-{
- extern unsigned long loops_per_jiffy;
- __delay(usecs * loops_per_jiffy / (1000000 / HZ));
-}
-
-#endif