1 // SPDX-License-Identifier: GPL-2.0+
8  * Date & Time support for MAXIM MAX6900 RTC
22 /* ------------------------------------------------------------------------- */
35 /* ------------------------------------------------------------------------- */
40 	int retry = 1;  in rtc_get()  local
55 			retry = 0;  in rtc_get()
57 	} while (retry);  in rtc_get()
64 	tmp->tm_sec  = bcd2bin (sec  & 0x7F);  in rtc_get()
65 	tmp->tm_min  = bcd2bin (min  & 0x7F);  in rtc_get()
66 	tmp->tm_hour = bcd2bin (hour & 0x3F);  in rtc_get()
67 	tmp->tm_mday = bcd2bin (mday & 0x3F);  in rtc_get()
68 	tmp->tm_mon  = bcd2bin (mon & 0x1F);  in rtc_get()
69 	tmp->tm_year = bcd2bin (year) + bcd2bin(cent) * 100;  in rtc_get()
70 	tmp->tm_wday = bcd2bin (wday & 0x07);  in rtc_get()
71 	tmp->tm_yday = 0;  in rtc_get()
72 	tmp->tm_isdst= 0;  in rtc_get()
74 	debug ( "Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_get()
75 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_get()
76 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_get()
84 	debug ( "Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_set()
85 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_set()
86 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_set()
90 	rtc_write (0x92, bin2bcd(tmp->tm_year / 100));  in rtc_set()
91 	rtc_write (0x8c, bin2bcd(tmp->tm_year % 100));  in rtc_set()
92 	rtc_write (0x8a, bin2bcd(tmp->tm_wday));  in rtc_set()
93 	rtc_write (0x88, bin2bcd(tmp->tm_mon));  in rtc_set()
94 	rtc_write (0x86, bin2bcd(tmp->tm_mday));  in rtc_set()
95 	rtc_write (0x84, bin2bcd(tmp->tm_hour));  in rtc_set()
96 	rtc_write (0x82, bin2bcd(tmp->tm_min ));  in rtc_set()
97 	rtc_write (0x80, bin2bcd(tmp->tm_sec ));  in rtc_set()