xref: /OK3568_Linux_fs/kernel/arch/parisc/include/asm/delay.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_PARISC_DELAY_H
3*4882a593Smuzhiyun #define _ASM_PARISC_DELAY_H
4*4882a593Smuzhiyun 
__delay(unsigned long loops)5*4882a593Smuzhiyun static __inline__ void __delay(unsigned long loops) {
6*4882a593Smuzhiyun 	asm volatile(
7*4882a593Smuzhiyun 	"	.balignl	64,0x34000034\n"
8*4882a593Smuzhiyun 	"	addib,UV -1,%0,.\n"
9*4882a593Smuzhiyun 	"	nop\n"
10*4882a593Smuzhiyun 		: "=r" (loops) : "0" (loops));
11*4882a593Smuzhiyun }
12*4882a593Smuzhiyun 
13*4882a593Smuzhiyun extern void __udelay(unsigned long usecs);
14*4882a593Smuzhiyun extern void __udelay_bad(unsigned long usecs);
15*4882a593Smuzhiyun 
udelay(unsigned long usecs)16*4882a593Smuzhiyun static inline void udelay(unsigned long usecs)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun 	if (__builtin_constant_p(usecs) && (usecs) > 20000)
19*4882a593Smuzhiyun 		__udelay_bad(usecs);
20*4882a593Smuzhiyun 	__udelay(usecs);
21*4882a593Smuzhiyun }
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun #endif /* _ASM_PARISC_DELAY_H */
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