1 /* 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> 26 #include <power/pmic.h> 27 #include <fsl_pmic.h> 28 29 int rtc_get(struct rtc_time *rtc) 30 { 31 u32 day1, day2, time; 32 int tim, i = 0; 33 struct pmic *p = pmic_get("FSL_PMIC"); 34 int ret; 35 36 if (!p) 37 return -1; 38 do { 39 ret = pmic_reg_read(p, REG_RTC_DAY, &day1); 40 if (ret < 0) 41 return -1; 42 43 ret = pmic_reg_read(p, REG_RTC_TIME, &time); 44 if (ret < 0) 45 return -1; 46 47 ret = pmic_reg_read(p, REG_RTC_DAY, &day2); 48 if (ret < 0) 49 return -1; 50 51 } while (day1 != day2 && i++ < 3); 52 53 tim = day1 * 86400 + time; 54 55 to_tm(tim, rtc); 56 57 rtc->tm_yday = 0; 58 rtc->tm_isdst = 0; 59 60 return 0; 61 } 62 63 int rtc_set(struct rtc_time *rtc) 64 { 65 u32 time, day; 66 struct pmic *p = pmic_get("FSL_PMIC"); 67 if (!p) 68 return -1; 69 70 time = mktime(rtc->tm_year, rtc->tm_mon, rtc->tm_mday, 71 rtc->tm_hour, rtc->tm_min, rtc->tm_sec); 72 day = time / 86400; 73 time %= 86400; 74 75 pmic_reg_write(p, REG_RTC_DAY, day); 76 pmic_reg_write(p, REG_RTC_TIME, time); 77 78 return 0; 79 } 80 81 void rtc_reset(void) 82 { 83 } 84