1 // SPDX-License-Identifier: GPL-2.0-only
53 		"hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",  in m41t93_set_time()
54 		"write", tm->tm_sec, tm->tm_min,  in m41t93_set_time()
55 		tm->tm_hour, tm->tm_mday,  in m41t93_set_time()
56 		tm->tm_mon, tm->tm_year, tm->tm_wday);  in m41t93_set_time()
58 	if (tm->tm_year < 100) {  in m41t93_set_time()
59 		dev_warn(&spi->dev, "unsupported date (before 2000-01-01).\n");  in m41t93_set_time()
60 		return -EINVAL;  in m41t93_set_time()
68 		dev_warn(&spi->dev, "OF bit is set, resetting.\n");  in m41t93_set_time()
79 			dev_warn(&spi->dev,  in m41t93_set_time()
88 	data[M41T93_REG_ST_SEC]		= bin2bcd(tm->tm_sec);  in m41t93_set_time()
89 	data[M41T93_REG_MIN]		= bin2bcd(tm->tm_min);  in m41t93_set_time()
90 	data[M41T93_REG_CENT_HOUR]	= bin2bcd(tm->tm_hour) |  in m41t93_set_time()
91 						((tm->tm_year/100-1) << 6);  in m41t93_set_time()
92 	data[M41T93_REG_DAY]		= bin2bcd(tm->tm_mday);  in m41t93_set_time()
93 	data[M41T93_REG_WDAY]		= bin2bcd(tm->tm_wday + 1);  in m41t93_set_time()
94 	data[M41T93_REG_MON]		= bin2bcd(tm->tm_mon + 1);  in m41t93_set_time()
95 	data[M41T93_REG_YEAR]		= bin2bcd(tm->tm_year % 100);  in m41t93_set_time()
121 		dev_dbg(&spi->dev, "HT bit is set, reenable clock update.\n");  in m41t93_get_time()
131 		ret = -EINVAL;  in m41t93_get_time()
132 		dev_warn(&spi->dev, "OF bit is set, write time to restart.\n");  in m41t93_get_time()
136 		dev_warn(&spi->dev, "BL bit is set, replace battery.\n");  in m41t93_get_time()
143 	tm->tm_sec	= bcd2bin(buf[M41T93_REG_ST_SEC]);  in m41t93_get_time()
144 	tm->tm_min	= bcd2bin(buf[M41T93_REG_MIN]);  in m41t93_get_time()
145 	tm->tm_hour	= bcd2bin(buf[M41T93_REG_CENT_HOUR] & 0x3f);  in m41t93_get_time()
146 	tm->tm_mday	= bcd2bin(buf[M41T93_REG_DAY]);  in m41t93_get_time()
147 	tm->tm_mon	= bcd2bin(buf[M41T93_REG_MON]) - 1;  in m41t93_get_time()
148 	tm->tm_wday	= bcd2bin(buf[M41T93_REG_WDAY] & 0x0f) - 1;  in m41t93_get_time()
151 	tm->tm_year = bcd2bin(buf[M41T93_REG_YEAR]) + century_after_1900 * 100;  in m41t93_get_time()
154 		"hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",  in m41t93_get_time()
155 		"read", tm->tm_sec, tm->tm_min,  in m41t93_get_time()
156 		tm->tm_hour, tm->tm_mday,  in m41t93_get_time()
157 		tm->tm_mon, tm->tm_year, tm->tm_wday);  in m41t93_get_time()
175 	spi->bits_per_word = 8;  in m41t93_probe()
180 		dev_err(&spi->dev, "not found 0x%x.\n", res);  in m41t93_probe()
181 		return -ENODEV;  in m41t93_probe()
184 	rtc = devm_rtc_device_register(&spi->dev, m41t93_driver.driver.name,  in m41t93_probe()
196 		.name	= "rtc-m41t93",
206 MODULE_ALIAS("spi:rtc-m41t93");