8  * Based on MontaVista DS1743 code and U-Boot mc146818 code
10  * SPDX-License-Identifier:	GPL-2.0+
30 #define RTC_YEAR		( RTC_BASE + 0xf )
31 #define RTC_MONTH		( RTC_BASE + 0xe )
32 #define RTC_DAY_OF_MONTH	( RTC_BASE + 0xd )
33 #define RTC_DAY_OF_WEEK		( RTC_BASE + 0xc )
34 #define RTC_HOURS		( RTC_BASE + 0xb )
35 #define RTC_MINUTES		( RTC_BASE + 0xa )
36 #define RTC_SECONDS		( RTC_BASE + 0x9 )
37 #define RTC_CENTURY		( RTC_BASE + 0x8 )
43 #define RTC_CA_WRITE		0x80
44 #define RTC_CA_READ		0x40
46 #define RTC_CB_OSC_DISABLE	0x80
48 #define RTC_CC_BATTERY_FLAG	0x10
49 #define RTC_CC_FREQ_TEST	0x40
51 /* ------------------------------------------------------------------------- */
56 	uchar mday, wday, mon, year;  in rtc_get()  local
71 	mon     = rtc_read( RTC_MONTH );  in rtc_get()
79 	printf( "Get RTC year: %02x mon/cent: %02x mon: %02x mday: %02x wday: %02x "  in rtc_get()
81 		year, century, mon, mday, wday,  in rtc_get()
84 	tmp->tm_sec  = bcd2bin( sec  & 0x7F );  in rtc_get()
85 	tmp->tm_min  = bcd2bin( min  & 0x7F );  in rtc_get()
86 	tmp->tm_hour = bcd2bin( hour & 0x3F );  in rtc_get()
87 	tmp->tm_mday = bcd2bin( mday & 0x3F );  in rtc_get()
88 	tmp->tm_mon  = bcd2bin( mon & 0x1F );  in rtc_get()
89 	tmp->tm_wday = bcd2bin( wday & 0x07 );  in rtc_get()
92 	tmp->tm_year = bcd2bin( year ) +  in rtc_get()
93 		( bcd2bin( century & 0x3F ) * 100 );  in rtc_get()
95 	tmp->tm_yday = 0;  in rtc_get()
96 	tmp->tm_isdst= 0;  in rtc_get()
98 	printf( "Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_get()
99 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_get()
100 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec );  in rtc_get()
102 	return 0;  in rtc_get()
109 	printf( "Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_set()
110 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_set()
111 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_set()
117 	rtc_write( RTC_MONTH, bin2bcd( tmp->tm_mon ));  in rtc_set()
119 	rtc_write( RTC_DAY_OF_WEEK, bin2bcd( tmp->tm_wday ));  in rtc_set()
120 	rtc_write( RTC_DAY_OF_MONTH, bin2bcd( tmp->tm_mday ));  in rtc_set()
121 	rtc_write( RTC_HOURS, bin2bcd( tmp->tm_hour ));  in rtc_set()
122 	rtc_write( RTC_MINUTES, bin2bcd( tmp->tm_min ));  in rtc_set()
123 	rtc_write( RTC_SECONDS, bin2bcd( tmp->tm_sec ));  in rtc_set()
126 	rtc_write( RTC_YEAR, bin2bcd( tmp->tm_year % 100 ));  in rtc_set()
127 	rtc_write( RTC_CENTURY, bin2bcd( tmp->tm_year / 100 ));  in rtc_set()
132 	return 0;  in rtc_set()
144 		printf( "real-time-clock was stopped. Now starting...\n" );  in rtc_reset()
157 	if (( reg_c & RTC_CC_BATTERY_FLAG ) == 0 )  in rtc_reset()
161 /* ------------------------------------------------------------------------- */