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CRIS: Remove legacy RTC drivers

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These old drivers are not used anymore, we use the ones in drivers/rtc.
This allows us to remove some cruft in the CRIS timekeeping code.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
This commit is contained in:
Jesper Nilsson
2012-04-05 11:52:55 +02:00
parent 4d5914d628
commit 9c75fc8c5c
8 changed files with 7 additions and 1090 deletions
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76
arch/cris/kernel/time.c
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@@ -21,7 +21,6 @@
*
*/
#include <asm/rtc.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/param.h>
@@ -32,7 +31,8 @@
#include <linux/profile.h>
#include <linux/sched.h> /* just for sched_clock() - funny that */
int have_rtc; /* used to remember if we have an RTC or not */;
#define D(x)
#define TICK_SIZE tick
@@ -50,78 +50,16 @@ u32 arch_gettimeoffset(void)
}
#endif
/*
* BUG: This routine does not handle hour overflow properly; it just
* sets the minutes. Usually you'll only notice that after reboot!
*/
int set_rtc_mmss(unsigned long nowtime)
{
int retval = 0;
int real_seconds, real_minutes, cmos_minutes;
printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime);
if(!have_rtc)
return 0;
cmos_minutes = CMOS_READ(RTC_MINUTES);
cmos_minutes = bcd2bin(cmos_minutes);
/*
* since we're only adjusting minutes and seconds,
* don't interfere with hour overflow. This avoids
* messing with unknown time zones but requires your
* RTC not to be off by more than 15 minutes
*/
real_seconds = nowtime % 60;
real_minutes = nowtime / 60;
if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1)
real_minutes += 30; /* correct for half hour time zone */
real_minutes %= 60;
if (abs(real_minutes - cmos_minutes) < 30) {
real_seconds = bin2bcd(real_seconds);
real_minutes = bin2bcd(real_minutes);
CMOS_WRITE(real_seconds,RTC_SECONDS);
CMOS_WRITE(real_minutes,RTC_MINUTES);
} else {
printk_once(KERN_NOTICE
"set_rtc_mmss: can't update from %d to %d\n",
cmos_minutes, real_minutes);
retval = -1;
}
return retval;
D(printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime));
return 0;
}
/* grab the time from the RTC chip */
unsigned long
get_cmos_time(void)
unsigned long get_cmos_time(void)
{
unsigned int year, mon, day, hour, min, sec;
if(!have_rtc)
return 0;
sec = CMOS_READ(RTC_SECONDS);
min = CMOS_READ(RTC_MINUTES);
hour = CMOS_READ(RTC_HOURS);
day = CMOS_READ(RTC_DAY_OF_MONTH);
mon = CMOS_READ(RTC_MONTH);
year = CMOS_READ(RTC_YEAR);
sec = bcd2bin(sec);
min = bcd2bin(min);
hour = bcd2bin(hour);
day = bcd2bin(day);
mon = bcd2bin(mon);
year = bcd2bin(year);
if ((year += 1900) < 1970)
year += 100;
return mktime(year, mon, day, hour, min, sec);
return 0;
}
@@ -132,7 +70,7 @@ int update_persistent_clock(struct timespec now)
void read_persistent_clock(struct timespec *ts)
{
ts->tv_sec = get_cmos_time();
ts->tv_sec = 0;
ts->tv_nsec = 0;
}