[mirror_ubuntu-focal-kernel.git] / arch / cris / include / arch-v32 / arch / delay.h

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

extern void cris_delay10ns(u32 n10ns);
#define udelay(u) cris_delay10ns((u)*100)
#define ndelay(n) cris_delay10ns(((n)+9)/10)

/*
 * Not used anymore for udelay or ndelay.  Referenced by
 * e.g. init/calibrate.c.  All other references are likely bugs;
 * should be replaced by mdelay, udelay or ndelay.
 */

static inline void
__delay(int loops)
{
	__asm__ __volatile__ (
		"move.d %0, $r9\n\t"
		"beq 2f\n\t"
		"subq 1, $r9\n\t"
		"1:\n\t"
		"bne 1b\n\t"
		"subq 1, $r9\n"
		"2:"
		: : "g" (loops) : "r9");
}

#endif /* _ASM_CRIS_ARCH_DELAY_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
51533b61 MS	2	#ifndef _ASM_CRIS_ARCH_DELAY_H
	3	#define _ASM_CRIS_ARCH_DELAY_H
	4
94ebe164 JN	5	extern void cris_delay10ns(u32 n10ns);
	6	#define udelay(u) cris_delay10ns((u)*100)
	7	#define ndelay(n) cris_delay10ns(((n)+9)/10)
	8
	9	/*
	10	* Not used anymore for udelay or ndelay. Referenced by
	11	* e.g. init/calibrate.c. All other references are likely bugs;
	12	* should be replaced by mdelay, udelay or ndelay.
	13	*/
	14
d9b5444e	15	static inline void
51533b61 MS	16	__delay(int loops)
	17	{
	18	__asm__ __volatile__ (
	19	"move.d %0, $r9\n\t"
	20	"beq 2f\n\t"
	21	"subq 1, $r9\n\t"
	22	"1:\n\t"
	23	"bne 1b\n\t"
	24	"subq 1, $r9\n"
	25	"2:"
	26	: : "g" (loops) : "r9");
	27	}
	28
	29	#endif /* _ASM_CRIS_ARCH_DELAY_H */