7  * SPDX-License-Identifier:	GPL-2.0+
20 /*---------------------------------------------------------------------*/
26 /*---------------------------------------------------------------------*/
32 #define RTC_SEC_REG_ADDR	0x0
33 #define RTC_MIN_REG_ADDR	0x1
34 #define RTC_HR_REG_ADDR		0x2
35 #define RTC_DATE_REG_ADDR	0x3
36 #define RTC_MON_REG_ADDR	0x4
37 #define RTC_YR_REG_ADDR		0x5
38 #define RTC_DAY_REG_ADDR	0x6
39 #define RTC_STAT_REG_ADDR	0x7
47 #define RTC_STAT_BIT_ARST	0x80	/* AUTO RESET ENABLE BIT */
48 #define RTC_STAT_BIT_XTOSCB	0x40	/* CRYSTAL OSCILLATOR ENABLE BIT */
49 #define RTC_STAT_BIT_WRTC	0x10	/* WRITE RTC ENABLE BIT */
50 #define RTC_STAT_BIT_ALM	0x04	/* ALARM BIT */
51 #define RTC_STAT_BIT_BAT	0x02	/* BATTERY BIT */
52 #define RTC_STAT_BIT_RTCF	0x01	/* REAL TIME CLOCK FAIL BIT */
63 	int rel = 0;  in rtc_get()
64 	uchar sec, min, hour, mday, wday, mon, year, status;  in rtc_get()  local
72 	mon = rtc_read (RTC_MON_REG_ADDR);  in rtc_get()
75 	DEBUGR ("Get RTC year: %02x mon: %02x mday: %02x wday: %02x "  in rtc_get()
77 		year, mon, mday, wday, hour, min, sec, status);  in rtc_get()
83 		rel = -1;  in rtc_get()
86 	tmp->tm_sec  = bcd2bin (sec & 0x7F);  in rtc_get()
87 	tmp->tm_min  = bcd2bin (min & 0x7F);  in rtc_get()
88 	tmp->tm_hour = bcd2bin (hour & 0x3F);  in rtc_get()
89 	tmp->tm_mday = bcd2bin (mday & 0x3F);  in rtc_get()
90 	tmp->tm_mon  = bcd2bin (mon & 0x1F);  in rtc_get()
91 	tmp->tm_year = bcd2bin (year)+2000;  in rtc_get()
92 	tmp->tm_wday = bcd2bin (wday & 0x07);  in rtc_get()
93 	tmp->tm_yday = 0;  in rtc_get()
94 	tmp->tm_isdst= 0;  in rtc_get()
96 	DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_get()
97 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_get()
98 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_get()
108 	DEBUGR ("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",  in rtc_set()
109 		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,  in rtc_set()
110 		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);  in rtc_set()
116 	rtc_write (RTC_YR_REG_ADDR, bin2bcd (tmp->tm_year % 100));  in rtc_set()
117 	rtc_write (RTC_MON_REG_ADDR, bin2bcd (tmp->tm_mon));  in rtc_set()
118 	rtc_write (RTC_DAY_REG_ADDR, bin2bcd (tmp->tm_wday));  in rtc_set()
119 	rtc_write (RTC_DATE_REG_ADDR, bin2bcd (tmp->tm_mday));  in rtc_set()
120 	rtc_write (RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour) | 0x80 ); /* 24h clock */  in rtc_set()
121 	rtc_write (RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min));  in rtc_set()
122 	rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec));  in rtc_set()
128 	return 0;  in rtc_set()