blob: 4e18f80e93b175a9449d34eade1b1e25eea9eddd [file] [log] [blame]
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +02001/*
2 * Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23#include <common.h>
24#include <rtc.h>
25#include <spi.h>
Stefano Babicdfe5e142010-04-16 17:11:19 +020026#include <fsl_pmic.h>
Haavard Skinnemoend255bb02008-05-16 11:10:31 +020027
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020028int rtc_get(struct rtc_time *rtc)
29{
30 u32 day1, day2, time;
Stefano Babicdfe5e142010-04-16 17:11:19 +020031 int tim, i = 0;
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020032
33 do {
Stefano Babicdfe5e142010-04-16 17:11:19 +020034 day1 = pmic_reg_read(REG_RTC_DAY);
35 if (day1 < 0)
36 return -1;
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020037
Stefano Babicdfe5e142010-04-16 17:11:19 +020038 time = pmic_reg_read(REG_RTC_TIME);
39 if (time < 0)
40 return -1;
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020041
Stefano Babicdfe5e142010-04-16 17:11:19 +020042 day2 = pmic_reg_read(REG_RTC_DAY);
43 if (day2 < 0)
44 return -1;
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020045
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020046 } while (day1 != day2 && i++ < 3);
47
48 tim = day1 * 86400 + time;
Stefano Babicdfe5e142010-04-16 17:11:19 +020049
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020050 to_tm(tim, rtc);
51
52 rtc->tm_yday = 0;
53 rtc->tm_isdst = 0;
54
55 return 0;
56}
57
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +020058int rtc_set(struct rtc_time *rtc)
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020059{
Stefano Babicdfe5e142010-04-16 17:11:19 +020060 u32 time, day;
Haavard Skinnemoend255bb02008-05-16 11:10:31 +020061
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020062 time = mktime(rtc->tm_year, rtc->tm_mon, rtc->tm_mday,
63 rtc->tm_hour, rtc->tm_min, rtc->tm_sec);
64 day = time / 86400;
65 time %= 86400;
66
Stefano Babicdfe5e142010-04-16 17:11:19 +020067 pmic_reg_write(REG_RTC_DAY, day);
68 pmic_reg_write(REG_RTC_TIME, time);
Jean-Christophe PLAGNIOL-VILLARDd1e23192008-09-01 23:06:23 +020069
Magnus Liljaf3a7bdd2009-11-11 19:56:58 +010070 return 0;
Guennadi Liakhovetski7ce63702008-04-15 14:15:30 +020071}
72
73void rtc_reset(void)
74{
75}