| /* SPDX-License-Identifier: GPL-2.0 */ | |
| /* | |
| * Copyright (C) 2020-2022 Loongson Technology Corporation Limited | |
| */ | |
| #ifndef _ASM_DELAY_H | |
| #define _ASM_DELAY_H | |
| #include <linux/param.h> | |
| extern void __delay(unsigned long cycles); | |
| extern void __ndelay(unsigned long ns); | |
| extern void __udelay(unsigned long us); | |
| #define ndelay(ns) __ndelay(ns) | |
| #define udelay(us) __udelay(us) | |
| /* make sure "usecs *= ..." in udelay do not overflow. */ | |
| #if HZ >= 1000 | |
| #define MAX_UDELAY_MS 1 | |
| #elif HZ <= 200 | |
| #define MAX_UDELAY_MS 5 | |
| #else | |
| #define MAX_UDELAY_MS (1000 / HZ) | |
| #endif | |
| #endif /* _ASM_DELAY_H */ |