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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 09:45:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 09:45:08 -0700
commit81ce31b773226332475f89501b1072bec0c0e241 (patch)
treecd66f3c1caf731cc552ae90af2068aecabaed334 /arch/score/include/asm/delay.h
parent515b696b282f856c3ad1679ccd658120faa387d0 (diff)
parent9973affe9bbcde64041890d8793eb2e74143c298 (diff)
Merge branch 'for-linus' of git://gitserver.sunplusct.com/linux-2.6-score
* 'for-linus' of git://gitserver.sunplusct.com/linux-2.6-score: (22 commits) score: add TIF_NOTIFY_RESUME define in asm/thread_info.h score: make init_thread_union align to THREAD_SIZE score: update files according to review comments. score: add old syscall support score: add MEMORY_START and MEMORY_SIZE define, to make the code clear score: update inconsistent declare after .c was changed score: remove unused code, add include files in .c score: clean up mm/init.c score: make irq.h definitions local score: cleanups: dead code, 0 as pointer, shadowed variables score: fix function prototypes score: add address space annotations score: add missing #includes score: move save arg5 and arg6 instruction in front of enable_irq score: add prototypes for wrapped syscalls score: remove init_mm score: add generic sys_call_table score: remove __{put,get}_user_unknown score: unset __ARCH_WANT_IPC_PARSE_VERSION score: update files according to review comments ...
Diffstat (limited to 'arch/score/include/asm/delay.h')
-rw-r--r--arch/score/include/asm/delay.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/score/include/asm/delay.h b/arch/score/include/asm/delay.h
new file mode 100644
index 00000000000..6726ec199dc
--- /dev/null
+++ b/arch/score/include/asm/delay.h
@@ -0,0 +1,26 @@
+#ifndef _ASM_SCORE_DELAY_H
+#define _ASM_SCORE_DELAY_H
+
+static inline void __delay(unsigned long loops)
+{
+ /* 3 cycles per loop. */
+ __asm__ __volatile__ (
+ "1:\tsubi\t%0, 3\n\t"
+ "cmpz.c\t%0\n\t"
+ "ble\t1b\n\t"
+ : "=r" (loops)
+ : "0" (loops));
+}
+
+static inline void __udelay(unsigned long usecs)
+{
+ unsigned long loops_per_usec;
+
+ loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
+
+ __delay(usecs * loops_per_usec);
+}
+
+#define udelay(usecs) __udelay(usecs)
+
+#endif /* _ASM_SCORE_DELAY_H */