diff options
Diffstat (limited to 'rtc')
| -rw-r--r-- | rtc/bf533_rtc.c | 62 |
1 files changed, 32 insertions, 30 deletions
diff --git a/rtc/bf533_rtc.c b/rtc/bf533_rtc.c index 09b8f21..948be64 100644 --- a/rtc/bf533_rtc.c +++ b/rtc/bf533_rtc.c @@ -19,7 +19,7 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA - * Real Time Clock interface of ADI21535 (Blackfin) for uCLinux + * Real Time Clock interface of ADI21535 (Blackfin) for uCLinux * * Copyright (C) 2003 Motorola Corporation. All rights reserved. * Richard Xiao (A2590C@email.mot.com) @@ -42,7 +42,7 @@ * 1.10b Andrew Morton: SMP lock fix * 1.10c Cesar Barros: SMP locking fixes and cleanup * 1.10d Paul Gortmaker: delete paranoia check in rtc_exit - * 1.10e LG Soft India: Register access is different in BF533. + * 1.10e LG Soft India: Register access is different in BF533. */ #include <common.h> @@ -54,62 +54,64 @@ #include <asm/blackfin.h> #include <asm/cpu/bf533_rtc.h> -void rtc_reset(void) +void rtc_reset (void) { return; /* nothing to do */ } /* Wait for pending writes to complete */ -void wait_for_complete(void) +void wait_for_complete (void) { while (!(*(volatile unsigned short *) RTC_ISTAT & 0x8000)) { - printf(""); + printf (""); } *(volatile unsigned short *) RTC_ISTAT = 0x8000; } /* Enable the RTC prescaler enable register */ -void rtc_init() +void rtc_init () { *(volatile unsigned short *) RTC_PREN = 0x1; - wait_for_complete(); + wait_for_complete (); } -/* Set the time. Get the time_in_secs which is the number of seconds since Jan 1970 and set the RTC registers +/* Set the time. Get the time_in_secs which is the number of seconds since Jan 1970 and set the RTC registers * based on this value. */ void rtc_set (struct rtc_time *tmp) { unsigned long n_days_1970 = 0; - unsigned long n_secs_rem = 0; - unsigned long n_hrs = 0; - unsigned long n_mins = 0; - unsigned long n_secs = 0; + unsigned long n_secs_rem = 0; + unsigned long n_hrs = 0; + unsigned long n_mins = 0; + unsigned long n_secs = 0; unsigned long time_in_secs; - if(tmp == NULL) { - printf("Error setting the date/time \n"); + if (tmp == NULL) { + printf ("Error setting the date/time \n"); return; } - time_in_secs = mktime(tmp->tm_year, tmp->tm_mon, tmp->tm_mday,tmp->tm_hour, tmp->tm_min, tmp->tm_sec); + time_in_secs = + mktime (tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_hour, + tmp->tm_min, tmp->tm_sec); /* Compute no. of days since 1970 */ n_days_1970 = (unsigned long) (time_in_secs / (NUM_SECS_IN_DAY)); /* From the remining secs, compute the hrs(0-23), mins(0-59) and secs(0-59) */ - n_secs_rem = (unsigned long)(time_in_secs % (NUM_SECS_IN_DAY)); - n_hrs = n_secs_rem / (NUM_SECS_IN_HOUR); + n_secs_rem = (unsigned long) (time_in_secs % (NUM_SECS_IN_DAY)); + n_hrs = n_secs_rem / (NUM_SECS_IN_HOUR); n_secs_rem = n_secs_rem % (NUM_SECS_IN_HOUR); n_mins = n_secs_rem / (NUM_SECS_IN_MIN); n_secs = n_secs_rem % (NUM_SECS_IN_MIN); - + /* Store the new time in the RTC_STAT register */ *(volatile unsigned long *) RTC_STAT = ((n_days_1970 << DAY_BITS_OFF) | (n_hrs << HOUR_BITS_OFF) | - (n_mins << MIN_BITS_OFF) | (n_secs << SEC_BITS_OFF)); + (n_mins << MIN_BITS_OFF) | (n_secs << SEC_BITS_OFF)); - wait_for_complete(); + wait_for_complete (); } /* Read the time from the RTC_STAT. time_in_seconds is seconds since Jan 1970 */ @@ -117,16 +119,16 @@ void rtc_get (struct rtc_time *tmp) { unsigned long cur_rtc_stat = 0; unsigned long time_in_sec; - unsigned long tm_sec = 0, tm_min = 0, tm_hour = 0, tm_day = 0; + unsigned long tm_sec = 0, tm_min = 0, tm_hour = 0, tm_day = 0; - if(tmp == NULL) { - printf("Error getting the date/time \n"); + if (tmp == NULL) { + printf ("Error getting the date/time \n"); return; } /* Read the RTC_STAT register */ cur_rtc_stat = *(volatile unsigned long *) RTC_STAT; - + /* Get the secs (0-59), mins (0-59), hrs (0-23) and the days since Jan 1970 */ tm_sec = (cur_rtc_stat >> SEC_BITS_OFF) & 0x3f; tm_min = (cur_rtc_stat >> MIN_BITS_OFF) & 0x3f; @@ -134,10 +136,10 @@ void rtc_get (struct rtc_time *tmp) tm_day = (cur_rtc_stat >> DAY_BITS_OFF) & 0x7fff; /* Calculate the total number of seconds since Jan 1970 */ - time_in_sec = (tm_sec) + - MIN_TO_SECS(tm_min) + - HRS_TO_SECS(tm_hour) + - DAYS_TO_SECS(tm_day); - to_tm(time_in_sec,tmp); + time_in_sec = (tm_sec) + + MIN_TO_SECS (tm_min) + + HRS_TO_SECS (tm_hour) + + DAYS_TO_SECS (tm_day); + to_tm (time_in_sec, tmp); } -#endif /* CONFIG_RTC_BF533 && CFG_CMD_DATE */ +#endif /* CONFIG_RTC_BF533 && CFG_CMD_DATE */ |