68 static time64_t nov2dec_transitions(struct rtc_time *tm)  in nov2dec_transitions()  argument
70 	return (tm->tm_year + 1900) - 2016 + (tm->tm_mon + 1 > 11 ? 1 : 0);  in nov2dec_transitions()
73 static void rockchip_to_gregorian(struct rtc_time *tm)  in rockchip_to_gregorian()  argument
76 	time64_t time = rtc_tm_to_time64(tm);  in rockchip_to_gregorian()
77 	rtc_time64_to_tm(time + nov2dec_transitions(tm) * 86400, tm);  in rockchip_to_gregorian()
80 static void gregorian_to_rockchip(struct rtc_time *tm)  in gregorian_to_rockchip()  argument
82 	time64_t extra_days = nov2dec_transitions(tm);  in gregorian_to_rockchip()
83 	time64_t time = rtc_tm_to_time64(tm);  in gregorian_to_rockchip()
84 	rtc_time64_to_tm(time - extra_days * 86400, tm);  in gregorian_to_rockchip()
87 	if (nov2dec_transitions(tm) < extra_days) {  in gregorian_to_rockchip()
88 		if (tm->tm_mon + 1 == 11)  in gregorian_to_rockchip()
89 			tm->tm_mday++;	/* This may result in 31! */  in gregorian_to_rockchip()
91 			rtc_time64_to_tm(time - (extra_days - 1) * 86400, tm);  in gregorian_to_rockchip()
96 static int rk808_rtc_readtime(struct device *dev, struct rtc_time *tm)  in rk808_rtc_readtime()  argument
133 	tm->tm_sec = bcd2bin(rtc_data[0] & SECONDS_REG_MSK);  in rk808_rtc_readtime()
134 	tm->tm_min = bcd2bin(rtc_data[1] & MINUTES_REG_MAK);  in rk808_rtc_readtime()
135 	tm->tm_hour = bcd2bin(rtc_data[2] & HOURS_REG_MSK);  in rk808_rtc_readtime()
136 	tm->tm_mday = bcd2bin(rtc_data[3] & DAYS_REG_MSK);  in rk808_rtc_readtime()
137 	tm->tm_mon = (bcd2bin(rtc_data[4] & MONTHS_REG_MSK)) - 1;  in rk808_rtc_readtime()
138 	tm->tm_year = (bcd2bin(rtc_data[5] & YEARS_REG_MSK)) + 100;  in rk808_rtc_readtime()
139 	tm->tm_wday = bcd2bin(rtc_data[6] & WEEKS_REG_MSK);  in rk808_rtc_readtime()
140 	rockchip_to_gregorian(tm);  in rk808_rtc_readtime()
142 		1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,  in rk808_rtc_readtime()
143 		tm->tm_wday, tm->tm_hour, tm->tm_min, tm->tm_sec);  in rk808_rtc_readtime()
149 static int rk808_rtc_set_time(struct device *dev, struct rtc_time *tm)  in rk808_rtc_set_time()  argument
157 		1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday,  in rk808_rtc_set_time()
158 		tm->tm_wday, tm->tm_hour, tm->tm_min, tm->tm_sec);  in rk808_rtc_set_time()
159 	gregorian_to_rockchip(tm);  in rk808_rtc_set_time()
160 	rtc_data[0] = bin2bcd(tm->tm_sec);  in rk808_rtc_set_time()
161 	rtc_data[1] = bin2bcd(tm->tm_min);  in rk808_rtc_set_time()
162 	rtc_data[2] = bin2bcd(tm->tm_hour);  in rk808_rtc_set_time()
163 	rtc_data[3] = bin2bcd(tm->tm_mday);  in rk808_rtc_set_time()
164 	rtc_data[4] = bin2bcd(tm->tm_mon + 1);  in rk808_rtc_set_time()
165 	rtc_data[5] = bin2bcd(tm->tm_year - 100);  in rk808_rtc_set_time()
166 	rtc_data[6] = bin2bcd(tm->tm_wday);  in rk808_rtc_set_time()
378 	struct rtc_time tm;  in rk808_rtc_probe()  local
408 	ret = rk808_rtc_readtime(&pdev->dev, &tm);  in rk808_rtc_probe()
413 	ret = rtc_valid_tm(&tm);  in rk808_rtc_probe()