36 	return (year / 100) & 0x3;  in year2cb()
41 	return 1900 + 100 * ((cb + 1) & 0x3);  in cb2year()
48 #define RTC_SEC		0x0
49 #define RTC_MIN		0x1
50 #define RTC_HOUR	0x2
51 #define RTC_DAY		0x3
52 #define RTC_DATE	0x4
53 #define RTC_MONTH	0x5
54 #define RTC_YEAR	0x6
58 #define RTC_CTRL	0x7
65 	if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {  in rtc_dump()
70 	       label, data[0], data[1], data[2], data[3],  in rtc_dump()
85 	static const uchar daysInMonth[0x13] = {  in rtc_validate()
86 		0x00, 0x31, 0x29, 0x31, 0x30, 0x31, 0x30, 0x31,  in rtc_validate()
87 		0x31, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  in rtc_validate()
88 		0x31, 0x30, 0x31  in rtc_validate()
94 	if (i2c_read(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {  in rtc_validate()
96 		return 0;  in rtc_validate()
102 	if (0x00 != (data[RTC_CTRL] & 0x80)) {  in rtc_validate()
104 		data[RTC_SEC] = 0x80;  in rtc_validate()
107 			return 0;  in rtc_validate()
112 	 * OUT bit to "0", reset the date registers, and start the oscillator.  in rtc_validate()
114 	min = data[RTC_MIN] & 0x7F;  in rtc_validate()
116 	month = data[RTC_MONTH] & 0x3F;  in rtc_validate()
118 	if (0x59 < data[RTC_SEC] || 0x09 < (data[RTC_SEC] & 0x0F) ||  in rtc_validate()
119 	    0x59 < min || 0x09 < (min & 0x0F) ||  in rtc_validate()
120 	    0x23 < data[RTC_HOUR] || 0x09 < (data[RTC_HOUR] & 0x0F) ||  in rtc_validate()
121 	    0x07 < data[RTC_DAY] || 0x00 == data[RTC_DAY] ||  in rtc_validate()
122 	    0x12 < month ||  in rtc_validate()
123 	    0x99 < years || 0x09 < (years & 0x0F) ||  in rtc_validate()
124 	    daysInMonth[month] < date || 0x09 < (date & 0x0F) || 0x00 == date ||  in rtc_validate()
125 	    (0x29 == date && 0x02 == month &&  in rtc_validate()
126 	     ((0x00 != (years & 0x03)) ||  in rtc_validate()
127 	      (0x00 == years && 0x00 != (data[RTC_MONTH] & 0xC0))))) {  in rtc_validate()
132 		data[RTC_SEC] = 0x00;  in rtc_validate()
133 		data[RTC_MIN] &= 0x80;	/* preserve OFIE bit */  in rtc_validate()
134 		data[RTC_HOUR] = 0x00;  in rtc_validate()
135 		data[RTC_DAY] = 0x02;  in rtc_validate()
136 		data[RTC_DATE] = 0x01;  in rtc_validate()
137 		data[RTC_MONTH] = 0xC1;  in rtc_validate()
138 		data[RTC_YEAR] = 0x00;  in rtc_validate()
139 		data[RTC_CTRL] &= 0x7F;	/* reset OUT bit */  in rtc_validate()
141 		if (i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, data, sizeof(data))) {  in rtc_validate()
143 			return 0;  in rtc_validate()
156 	tmp->tm_sec = bcd2bin(data[RTC_SEC] & 0x7F);  in rtc_get()
157 	tmp->tm_min = bcd2bin(data[RTC_MIN] & 0x7F);  in rtc_get()
158 	tmp->tm_hour = bcd2bin(data[RTC_HOUR] & 0x3F);  in rtc_get()
159 	tmp->tm_mday = bcd2bin(data[RTC_DATE] & 0x3F);  in rtc_get()
160 	tmp->tm_mon = bcd2bin(data[RTC_MONTH] & 0x1F);  in rtc_get()
162 	tmp->tm_wday = bcd2bin(data[RTC_DAY] & 0x07) - 1;  in rtc_get()
163 	tmp->tm_yday = 0;  in rtc_get()
164 	tmp->tm_isdst = 0;  in rtc_get()
170 	return 0;  in rtc_get()
184 	data[RTC_SEC] = (data[RTC_SEC] & 0x80) | (bin2bcd(tmp->tm_sec) & 0x7F);  in rtc_set()
185 	data[RTC_MIN] = (data[RTC_MIN] & 0X80) | (bin2bcd(tmp->tm_min) & 0X7F);  in rtc_set()
186 	data[RTC_HOUR] = bin2bcd(tmp->tm_hour) & 0x3F;  in rtc_set()
187 	data[RTC_DATE] = bin2bcd(tmp->tm_mday) & 0x3F;  in rtc_set()
188 	data[RTC_MONTH] = bin2bcd(tmp->tm_mon) & 0x1F;  in rtc_set()
191 	data[RTC_DAY] = bin2bcd(tmp->tm_wday + 1) & 0x07;  in rtc_set()
192 	if (i2c_write(CONFIG_SYS_I2C_RTC_ADDR, 0, 1, data, RTC_REG_CNT)) {  in rtc_set()
197 	return 0;  in rtc_set()
211 	 * between 0x00 and 0x3F, inclusive.  The five least-significan bits  in rtc_reset()
214 	 * register is updated.  The value 0x00 imples no correction.  Consult  in rtc_reset()
218 		unsigned long const l = simple_strtoul(s, 0, 16);  in rtc_reset()
220 		if (l <= 0x3F) {  in rtc_reset()
221 			if ((data[RTC_CTRL] & 0x3F) != l) {  in rtc_reset()
222 				printf("Setting RTC calibration to 0x%02lX\n",  in rtc_reset()
224 				data[RTC_CTRL] &= 0xC0;  in rtc_reset()
234 	data[RTC_CTRL] &= 0xBF;  in rtc_reset()