u-boot/arch/mips/cpu/mips32/time.c
Gabor Juhos c3e4901fc6 MIPS: mips32/time.c: fix checkpatch errors/warnings
Checking mips32/time.c with checkpatch.pl shows this:

  arch/mips/cpu/mips32/time.c:30: WARNING: line over 80 characters
  arch/mips/cpu/mips32/time.c:57: ERROR: return is not a function, parentheses are not required
  total: 1 errors, 1 warnings, 0 checks, 85 lines checked

Fix the code to make checkpatch.pl happy.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
2013-07-24 09:51:04 -04:00

70 lines
1.4 KiB
C

/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/mipsregs.h>
static unsigned long timestamp;
/* how many counter cycles in a jiffy */
#define CYCLES_PER_JIFFY \
(CONFIG_SYS_MIPS_TIMER_FREQ + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ
/*
* timer without interrupts
*/
int timer_init(void)
{
/* Set up the timer for the first expiration. */
write_c0_compare(read_c0_count() + CYCLES_PER_JIFFY);
return 0;
}
ulong get_timer(ulong base)
{
unsigned int count;
unsigned int expirelo = read_c0_compare();
/* Check to see if we have missed any timestamps. */
count = read_c0_count();
while ((count - expirelo) < 0x7fffffff) {
expirelo += CYCLES_PER_JIFFY;
timestamp++;
}
write_c0_compare(expirelo);
return timestamp - base;
}
void __udelay(unsigned long usec)
{
unsigned int tmo;
tmo = read_c0_count() + (usec * (CONFIG_SYS_MIPS_TIMER_FREQ / 1000000));
while ((tmo - read_c0_count()) < 0x7fffffff)
/*NOP*/;
}
/*
* This function is derived from PowerPC code (read timebase as long long).
* On MIPS it just returns the timer value.
*/
unsigned long long get_ticks(void)
{
return get_timer(0);
}
/*
* This function is derived from PowerPC code (timebase clock frequency).
* On MIPS it returns the number of timer ticks per second.
*/
ulong get_tbclk(void)
{
return CONFIG_SYS_HZ;
}