| Heiko Schocher | 41d272d | 2011-09-14 19:48:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2011 DENX Software Engineering GmbH |
| 3 | * Heiko Schocher <hs@denx.de> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | #include <common.h> |
| 24 | #include <command.h> |
| 25 | #include <rtc.h> |
| 26 | #include <asm/io.h> |
| 27 | #include <asm/arch/hardware.h> |
| 28 | |
| 29 | #if defined(CONFIG_CMD_DATE) |
| Heiko Schocher | 41d272d | 2011-09-14 19:48:23 +0000 | [diff] [blame] | 30 | int rtc_get(struct rtc_time *tmp) |
| 31 | { |
| 32 | struct davinci_rtc *rtc = davinci_rtc_base; |
| 33 | unsigned long sec, min, hour, mday, wday, mon_cent, year; |
| 34 | unsigned long status; |
| 35 | |
| 36 | status = readl(&rtc->status); |
| 37 | if ((status & RTC_STATE_RUN) != RTC_STATE_RUN) { |
| 38 | printf("RTC doesn't run\n"); |
| 39 | return -1; |
| 40 | } |
| 41 | if ((status & RTC_STATE_BUSY) == RTC_STATE_BUSY) |
| 42 | udelay(20); |
| 43 | |
| 44 | sec = readl(&rtc->second); |
| 45 | min = readl(&rtc->minutes); |
| 46 | hour = readl(&rtc->hours); |
| 47 | mday = readl(&rtc->day); |
| 48 | wday = readl(&rtc->dotw); |
| 49 | mon_cent = readl(&rtc->month); |
| 50 | year = readl(&rtc->year); |
| 51 | |
| 52 | debug("Get RTC year: %02lx mon/cent: %02lx mday: %02lx wday: %02lx " |
| 53 | "hr: %02lx min: %02lx sec: %02lx\n", |
| 54 | year, mon_cent, mday, wday, |
| 55 | hour, min, sec); |
| 56 | |
| 57 | tmp->tm_sec = bcd2bin(sec & 0x7F); |
| 58 | tmp->tm_min = bcd2bin(min & 0x7F); |
| 59 | tmp->tm_hour = bcd2bin(hour & 0x3F); |
| 60 | tmp->tm_mday = bcd2bin(mday & 0x3F); |
| 61 | tmp->tm_mon = bcd2bin(mon_cent & 0x1F); |
| 62 | tmp->tm_year = bcd2bin(year) + 2000; |
| 63 | tmp->tm_wday = bcd2bin(wday & 0x07); |
| 64 | tmp->tm_yday = 0; |
| 65 | tmp->tm_isdst = 0; |
| 66 | |
| 67 | debug("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", |
| 68 | tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, |
| 69 | tmp->tm_hour, tmp->tm_min, tmp->tm_sec); |
| 70 | |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | int rtc_set(struct rtc_time *tmp) |
| 75 | { |
| 76 | struct davinci_rtc *rtc = davinci_rtc_base; |
| 77 | |
| 78 | debug("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", |
| 79 | tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, |
| 80 | tmp->tm_hour, tmp->tm_min, tmp->tm_sec); |
| 81 | writel(bin2bcd(tmp->tm_year % 100), &rtc->year); |
| 82 | writel(bin2bcd(tmp->tm_mon), &rtc->month); |
| 83 | |
| 84 | writel(bin2bcd(tmp->tm_wday), &rtc->dotw); |
| 85 | writel(bin2bcd(tmp->tm_mday), &rtc->day); |
| 86 | writel(bin2bcd(tmp->tm_hour), &rtc->hours); |
| 87 | writel(bin2bcd(tmp->tm_min), &rtc->minutes); |
| 88 | writel(bin2bcd(tmp->tm_sec), &rtc->second); |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | void rtc_reset(void) |
| 93 | { |
| 94 | struct davinci_rtc *rtc = davinci_rtc_base; |
| 95 | |
| 96 | /* run RTC counter */ |
| 97 | writel(0x01, &rtc->ctrl); |
| 98 | } |
| 99 | #endif |