patch-2.3.16 linux/include/asm-sh/delay.h

• Lines: 45
• Date: Mon Aug 30 18:12:59 1999
• Orig file: v2.3.15/linux/include/asm-sh/delay.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.15/linux/include/asm-sh/delay.h linux/include/asm-sh/delay.h
@@ -0,0 +1,44 @@
+#ifndef __ASM_SH_DELAY_H
+#define __ASM_SH_DELAY_H
+
+/*
+ * Copyright (C) 1999  Niibe Yutaka
+ */
+
+extern __inline__ void __delay(unsigned long loops)
+{
+	unsigned long __dummy;
+	__asm__ __volatile__(
+ 		"1:\t"
+		"dt	%0\n\t"
+		"bf	1b"
+		:"=r" (__dummy)
+		:"0" (loops));
+}
+
+extern __inline__ void __udelay(unsigned long usecs, unsigned long lps)
+{
+	usecs *= 0x000010c6;		/* 2**32 / 1000000 */
+	__asm__("mul.l	%0,%2\n\t"
+		"sts	macl,%0"
+		: "=&r" (usecs)
+		: "0" (usecs), "r" (lps)
+		: "macl", "mach");
+        __delay(usecs);
+}
+
+
+#ifdef __SMP__
+#define __udelay_val cpu_data[smp_processor_id()].udelay_val
+#else
+#define __udelay_val loops_per_sec
+#endif
+
+#define udelay(usecs) __udelay((usecs),__udelay_val)
+
+extern __inline__ unsigned long muldiv(unsigned long a, unsigned long b, unsigned long c)
+{
+	return (a*b)/c;
+}
+
+#endif /* __ASM_SH_DELAY_H */