6  * Maintainers: http://www.nslu2-linux.org/
25  *  PCF85063A -- Rev. 6 — 18 November 2015
26  *  PCF85063TP -- Rev. 4 — 6 May 2015
51 		dev_err(&client->dev, "Failing to stop the clock\n");  in pcf85063_stop_clock()
52 		return -EIO;  in pcf85063_stop_clock()
60 		dev_err(&client->dev, "Failing to stop the clock\n");  in pcf85063_stop_clock()
61 		return -EIO;  in pcf85063_stop_clock()
78 		dev_err(&client->dev, "Failing to start the clock\n");  in pcf85063_start_clock()
79 		return -EIO;  in pcf85063_start_clock()
94 	 * event, the access must be finished within one second. So, read all  in pcf85063_rtc_read_time()
100 		dev_err(&client->dev, "date/time register read error\n");  in pcf85063_rtc_read_time()
101 		return -EIO;  in pcf85063_rtc_read_time()
104 	/* if the clock has lost its power it makes no sense to use its time */  in pcf85063_rtc_read_time()
106 		dev_warn(&client->dev, "Power loss detected, invalid time\n");  in pcf85063_rtc_read_time()
107 		return -EINVAL;  in pcf85063_rtc_read_time()
110 	tm->tm_sec = bcd2bin(regs[0] & 0x7F);  in pcf85063_rtc_read_time()
111 	tm->tm_min = bcd2bin(regs[1] & 0x7F);  in pcf85063_rtc_read_time()
112 	tm->tm_hour = bcd2bin(regs[2] & 0x3F); /* rtc hr 0-23 */  in pcf85063_rtc_read_time()
113 	tm->tm_mday = bcd2bin(regs[3] & 0x3F);  in pcf85063_rtc_read_time()
114 	tm->tm_wday = regs[4] & 0x07;  in pcf85063_rtc_read_time()
115 	tm->tm_mon = bcd2bin(regs[5] & 0x1F) - 1; /* rtc mn 1-12 */  in pcf85063_rtc_read_time()
116 	tm->tm_year = bcd2bin(regs[6]);  in pcf85063_rtc_read_time()
117 	tm->tm_year += 100;  in pcf85063_rtc_read_time()
129 	if ((tm->tm_year < 100) || (tm->tm_year > 199))  in pcf85063_rtc_set_time()
130 		return -EINVAL;  in pcf85063_rtc_set_time()
141 	regs[0] = bin2bcd(tm->tm_sec) & 0x7F; /* clear OS flag */  in pcf85063_rtc_set_time()
143 	regs[1] = bin2bcd(tm->tm_min);  in pcf85063_rtc_set_time()
144 	regs[2] = bin2bcd(tm->tm_hour);  in pcf85063_rtc_set_time()
146 	/* Day of month, 1 - 31 */  in pcf85063_rtc_set_time()
147 	regs[3] = bin2bcd(tm->tm_mday);  in pcf85063_rtc_set_time()
149 	/* Day, 0 - 6 */  in pcf85063_rtc_set_time()
150 	regs[4] = tm->tm_wday & 0x07;  in pcf85063_rtc_set_time()
152 	/* month, 1 - 12 */  in pcf85063_rtc_set_time()
153 	regs[5] = bin2bcd(tm->tm_mon + 1);  in pcf85063_rtc_set_time()
156 	regs[6] = bin2bcd(tm->tm_year - 100);  in pcf85063_rtc_set_time()
162 		dev_err(&client->dev, "date/time register write error\n");  in pcf85063_rtc_set_time()
169 	 * PCF85063A devices.  The rollover point can not be used.  in pcf85063_rtc_set_time()
189 	dev_dbg(&client->dev, "%s\n", __func__);  in pcf85063_probe()
191 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))  in pcf85063_probe()
192 		return -ENODEV;  in pcf85063_probe()
196 		dev_err(&client->dev, "RTC chip is not present\n");  in pcf85063_probe()
200 	rtc = devm_rtc_device_register(&client->dev,  in pcf85063_probe()
223 		.name	= "rtc-pcf85063",