diff options
Diffstat (limited to 'drivers/rtc/bf5xx_rtc.c')
| -rw-r--r-- | drivers/rtc/bf5xx_rtc.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/drivers/rtc/bf5xx_rtc.c b/drivers/rtc/bf5xx_rtc.c deleted file mode 100644 index a0f532d..0000000 --- a/drivers/rtc/bf5xx_rtc.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * (C) Copyright 2001 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * 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 - * - * Copyright (C) 2003 Motorola Corporation. All rights reserved. - * Richard Xiao (A2590C@email.mot.com) - * - * Copyright (C) 1996 Paul Gortmaker - * - * - * Based on other minimal char device drivers, like Alan's - * watchdog, Ted's random, etc. etc. - * - * 1.07 Paul Gortmaker. - * 1.08 Miquel van Smoorenburg: disallow certain things on the - * DEC Alpha as the CMOS clock is also used for other things. - * 1.09 Nikita Schmidt: epoch support and some Alpha cleanup. - * 1.09a Pete Zaitcev: Sun SPARC - * 1.09b Jeff Garzik: Modularize, init cleanup - * 1.09c Jeff Garzik: SMP cleanup - * 1.10 Paul Barton-Davis: add support for async I/O - * 1.10a Andrea Arcangeli: Alpha updates - * 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. - */ - -#include <common.h> -#include <command.h> -#include <rtc.h> - -#if defined(CONFIG_RTC_BFIN) && defined(CONFIG_CMD_DATE) - -#include <asm/blackfin.h> -#include <asm/mach-common/bits/rtc.h> - -#define MIN_TO_SECS(_x_) (60 * _x_) -#define HRS_TO_SECS(_x_) (60 * 60 * _x_) -#define DAYS_TO_SECS(_x_) (24 * 60 * 60 * _x_) - -#define NUM_SECS_IN_DAY (24 * 3600) -#define NUM_SECS_IN_HOUR (3600) -#define NUM_SECS_IN_MIN (60) - -/* Shift values for RTC_STAT register */ -#define DAY_BITS_OFF 17 -#define HOUR_BITS_OFF 12 -#define MIN_BITS_OFF 6 -#define SEC_BITS_OFF 0 - -void rtc_reset(void) -{ - return; /* nothing to do */ -} - -/* Wait for pending writes to complete */ -void wait_for_complete(void) -{ - while (!(*(volatile unsigned short *)RTC_ISTAT & 0x8000)) { - printf(""); - } - *(volatile unsigned short *)RTC_ISTAT = 0x8000; -} - -/* Enable the RTC prescaler enable register */ -void rtc_init() -{ - *(volatile unsigned short *)RTC_PREN = 0x1; - 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 - * 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 time_in_secs; - - 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); - - /* 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 = 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)); - - wait_for_complete(); -} - -/* Read the time from the RTC_STAT. time_in_seconds is seconds since Jan 1970 */ -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; - - 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; - tm_hour = (cur_rtc_stat >> HOUR_BITS_OFF) & 0x1f; - 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); -} -#endif |