1 // SPDX-License-Identifier: GPL-2.0+
4  * Matthias Fuchs, esd gmbh, matthias.fuchs@esd-electronics.com.
16 /*---------------------------------------------------------------------*/
24 /*---------------------------------------------------------------------*/
63  * sequence (start sequence without a prior stop).
65  * U-Boot's 4xx i2c driver is currently not capable
81 	uchar sec, min, hour, mday, wday, mon, year, ctl2;  in rtc_get()  local
93 	year = rtc_read(RTC_YR_REG_ADDR);  in rtc_get()
95 	DEBUGR ("Get RTC year: %02x mon: %02x mday: %02x wday: %02x "  in rtc_get()
97 		year, mon, mday, wday, hour, min, sec);  in rtc_get()
102 		printf("RTC: power-on detected\n");  in rtc_get()
103 		rel = -1;  in rtc_get()
108 		rel = -1;  in rtc_get()
113 		rel = -1;  in rtc_get()
116 	tmp->tm_sec  = bcd2bin (sec & 0x7F);  in rtc_get()
117 	tmp->tm_min  = bcd2bin (min & 0x7F);  in rtc_get()
119 		tmp->tm_hour = bcd2bin (hour & 0x3F);  in rtc_get()
121 		tmp->tm_hour = bcd2bin (hour & 0x1F) % 12 +  in rtc_get()
123 	tmp->tm_mday = bcd2bin (mday & 0x3F);  in rtc_get()
124 	tmp->tm_mon  = bcd2bin (mon & 0x1F);  in rtc_get()
125 	tmp->tm_year = bcd2bin (year) + ( bcd2bin (year) >= 70 ? 1900 : 2000);  in rtc_get()
126 	tmp->tm_wday = bcd2bin (wday & 0x07);  in rtc_get()
127 	tmp->tm_yday = 0;  in rtc_get()
128 	tmp->tm_isdst= 0;  in rtc_get()
130 	DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_get()
131 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_get()
132 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_get()
142 	DEBUGR ("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_set()
143 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_set()
144 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_set()
146 	if (tmp->tm_year < 1970 || tmp->tm_year > 2069)  in rtc_set()
147 		printf("WARNING: year should be between 1970 and 2069!\n");  in rtc_set()
149 	rtc_write (RTC_YR_REG_ADDR, bin2bcd (tmp->tm_year % 100));  in rtc_set()
150 	rtc_write (RTC_MON_REG_ADDR, bin2bcd (tmp->tm_mon));  in rtc_set()
151 	rtc_write (RTC_DAY_REG_ADDR, bin2bcd (tmp->tm_wday));  in rtc_set()
152 	rtc_write (RTC_DATE_REG_ADDR, bin2bcd (tmp->tm_mday));  in rtc_set()
153 	rtc_write (RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour));  in rtc_set()
154 	rtc_write (RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min));  in rtc_set()
155 	rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec));  in rtc_set()