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-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 */