| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| Helge Deller | f6d12ee | 2013-10-23 23:29:16 +0200 | [diff] [blame] | 2 | #ifndef _ASM_PARISC_DELAY_H |
| 3 | #define _ASM_PARISC_DELAY_H |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | |
| 5 | static __inline__ void __delay(unsigned long loops) { |
| 6 | asm volatile( |
| 7 | " .balignl 64,0x34000034\n" |
| 8 | " addib,UV -1,%0,.\n" |
| 9 | " nop\n" |
| 10 | : "=r" (loops) : "0" (loops)); |
| 11 | } |
| 12 | |
| Helge Deller | f6d12ee | 2013-10-23 23:29:16 +0200 | [diff] [blame] | 13 | extern void __udelay(unsigned long usecs); |
| 14 | extern void __udelay_bad(unsigned long usecs); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | |
| Helge Deller | f6d12ee | 2013-10-23 23:29:16 +0200 | [diff] [blame] | 16 | static inline void udelay(unsigned long usecs) |
| 17 | { |
| 18 | if (__builtin_constant_p(usecs) && (usecs) > 20000) |
| 19 | __udelay_bad(usecs); |
| 20 | __udelay(usecs); |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | } |
| 22 | |
| Helge Deller | f6d12ee | 2013-10-23 23:29:16 +0200 | [diff] [blame] | 23 | #endif /* _ASM_PARISC_DELAY_H */ |