[linux-2.6-block.git] / arch / score / include / asm / delay.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_SCORE_DELAY_H
#define _ASM_SCORE_DELAY_H

#include <asm-generic/param.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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
6bc9a396 CL	2	#ifndef _ASM_SCORE_DELAY_H
	3	#define _ASM_SCORE_DELAY_H
	4
ef8355c3 CL	5	#include <asm-generic/param.h>
ef8355c3 CL	6
6bc9a396 CL	7	static inline void __delay(unsigned long loops)
6bc9a396 CL	8	{
0402c91a	9	/* 3 cycles per loop. */
6bc9a396	10	__asm__ __volatile__ (
0402c91a	11	"1:\tsubi\t%0, 3\n\t"
6bc9a396	12	"cmpz.c\t%0\n\t"
0402c91a	13	"ble\t1b\n\t"
6bc9a396 CL	14	: "=r" (loops)
	15	: "0" (loops));
	16	}
	17
	18	static inline void __udelay(unsigned long usecs)
	19	{
0402c91a CL	20	unsigned long loops_per_usec;
	21
	22	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
	23
	24	__delay(usecs * loops_per_usec);
6bc9a396 CL	25	}
	26
	27	#define udelay(usecs) __udelay(usecs)
	28
	29	#endif /* _ASM_SCORE_DELAY_H */