| // SPDX-License-Identifier: GPL-2.0 |
| // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| void __delay(unsigned long loops) |
| void __const_udelay(unsigned long xloops) |
| unsigned long long loops; |
| loops = (unsigned long long)xloops * loops_per_jiffy * HZ; |
| EXPORT_SYMBOL(__const_udelay); |
| void __udelay(unsigned long usecs) |
| __const_udelay(usecs * 0x10C7UL); /* 2**32 / 1000000 (rounded up) */ |
| void __ndelay(unsigned long nsecs) |
| __const_udelay(nsecs * 0x5UL); /* 2**32 / 1000000000 (rounded up) */ |