| /* 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 */ |
