Contributors: 7
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ralf Baechle |
98 |
72.06% |
3 |
30.00% |
| Maciej W. Rozycki |
25 |
18.38% |
2 |
20.00% |
| Masahiro Yamada |
5 |
3.68% |
1 |
10.00% |
| Atsushi Nemoto |
3 |
2.21% |
1 |
10.00% |
| Paul Burton |
3 |
2.21% |
1 |
10.00% |
| Paul Gortmaker |
1 |
0.74% |
1 |
10.00% |
| David Daney |
1 |
0.74% |
1 |
10.00% |
| Total |
136 |
|
10 |
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1994 by Waldorf Electronics
* Copyright (C) 1995 - 2000, 01, 03 by Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
* Copyright (C) 2007, 2014 Maciej W. Rozycki
*/
#include <linux/delay.h>
#include <linux/export.h>
#include <linux/param.h>
#include <linux/smp.h>
#include <linux/stringify.h>
#include <asm/asm.h>
#include <asm/compiler.h>
#ifndef CONFIG_CPU_DADDI_WORKAROUNDS
#define GCC_DADDI_IMM_ASM() "I"
#else
#define GCC_DADDI_IMM_ASM() "r"
#endif
#ifndef CONFIG_HAVE_PLAT_DELAY
void __delay(unsigned long loops)
{
__asm__ __volatile__ (
" .set noreorder \n"
" .align 3 \n"
"1: bnez %0, 1b \n"
" " __stringify(LONG_SUBU) " %0, %1 \n"
" .set reorder \n"
: "=r" (loops)
: GCC_DADDI_IMM_ASM() (1), "0" (loops));
}
EXPORT_SYMBOL(__delay);
/*
* Division by multiplication: you don't have to worry about
* loss of precision.
*
* Use only for very small delays ( < 1 msec). Should probably use a
* lookup table, really, as the multiplications take much too long with
* short delays. This is a "reasonable" implementation, though (and the
* first constant multiplications gets optimized away if the delay is
* a constant)
*/
void __udelay(unsigned long us)
{
unsigned int lpj = raw_current_cpu_data.udelay_val;
__delay((us * 0x000010c7ull * HZ * lpj) >> 32);
}
EXPORT_SYMBOL(__udelay);
void __ndelay(unsigned long ns)
{
unsigned int lpj = raw_current_cpu_data.udelay_val;
__delay((ns * 0x00000005ull * HZ * lpj) >> 32);
}
EXPORT_SYMBOL(__ndelay);
#endif