[deliverable/linux.git] / include / asm-sh / delay.h

#ifndef __ASM_SH_DELAY_H
#define __ASM_SH_DELAY_H

/*
 * Copyright (C) 1993 Linus Torvalds
 *
 * Delay routines calling functions in arch/sh/lib/delay.c
 */

extern void __bad_udelay(void);
extern void __bad_ndelay(void);

extern void __udelay(unsigned long usecs);
extern void __ndelay(unsigned long nsecs);
extern void __const_udelay(unsigned long xloops);
extern void __delay(unsigned long loops);

#ifdef CONFIG_SUPERH32
#define udelay(n) (__builtin_constant_p(n) ? \
	((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c6ul)) : \
	__udelay(n))

#define ndelay(n) (__builtin_constant_p(n) ? \
	((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
	__ndelay(n))
#else
extern void udelay(unsigned long usecs);
extern void ndelay(unsigned long nsecs);
#endif

#endif /* __ASM_SH_DELAY_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __ASM_SH_DELAY_H
	2	#define __ASM_SH_DELAY_H
	3
	4	/*
	5	* Copyright (C) 1993 Linus Torvalds
	6	*
	7	* Delay routines calling functions in arch/sh/lib/delay.c
	8	*/
99432700	9
1da177e4 LT	10	extern void __bad_udelay(void);
	11	extern void __bad_ndelay(void);
	12
	13	extern void __udelay(unsigned long usecs);
	14	extern void __ndelay(unsigned long nsecs);
5ab24c79	15	extern void __const_udelay(unsigned long xloops);
1da177e4 LT	16	extern void __delay(unsigned long loops);
1da177e4 LT	17
99432700	18	#ifdef CONFIG_SUPERH32
1da177e4 LT	19	#define udelay(n) (__builtin_constant_p(n) ? \
	20	((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c6ul)) : \
	21	__udelay(n))
	22
1da177e4 LT	23	#define ndelay(n) (__builtin_constant_p(n) ? \
	24	((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
	25	__ndelay(n))
99432700 PM	26	#else
	27	extern void udelay(unsigned long usecs);
	28	extern void ndelay(unsigned long nsecs);
	29	#endif
1da177e4 LT	30
1da177e4 LT	31	#endif /* __ASM_SH_DELAY_H */