2  * Driver for ST M41T94 SPI RTC
15 #include <linux/spi/spi.h>
34 	struct spi_device *spi = to_spi_device(dev);  in m41t94_set_time()  local
56 	return spi_write(spi, buf, 8);  in m41t94_set_time()
61 	struct spi_device *spi = to_spi_device(dev);  in m41t94_read_time()  local
66 	ret = spi_w8r8(spi, M41T94_REG_HT);  in m41t94_read_time()
72 		spi_write(spi, buf, 2);  in m41t94_read_time()
76 	ret = spi_w8r8(spi, M41T94_REG_SECONDS);  in m41t94_read_time()
82 		spi_write(spi, buf, 2);  in m41t94_read_time()
85 	tm->tm_sec  = bcd2bin(spi_w8r8(spi, M41T94_REG_SECONDS));  in m41t94_read_time()
86 	tm->tm_min  = bcd2bin(spi_w8r8(spi, M41T94_REG_MINUTES));  in m41t94_read_time()
87 	hour = spi_w8r8(spi, M41T94_REG_HOURS);  in m41t94_read_time()
89 	tm->tm_wday = bcd2bin(spi_w8r8(spi, M41T94_REG_WDAY)) - 1;  in m41t94_read_time()
90 	tm->tm_mday = bcd2bin(spi_w8r8(spi, M41T94_REG_DAY));  in m41t94_read_time()
91 	tm->tm_mon  = bcd2bin(spi_w8r8(spi, M41T94_REG_MONTH)) - 1;  in m41t94_read_time()
92 	tm->tm_year = bcd2bin(spi_w8r8(spi, M41T94_REG_YEAR));  in m41t94_read_time()
113 static int __devinit m41t94_probe(struct spi_device *spi)  in m41t94_probe()  argument
118 	spi->bits_per_word = 8;  in m41t94_probe()
119 	spi_setup(spi);  in m41t94_probe()
121 	res = spi_w8r8(spi, M41T94_REG_SECONDS);  in m41t94_probe()
123 		dev_err(&spi->dev, "not found.\n");  in m41t94_probe()
128 		&spi->dev, &m41t94_rtc_ops, THIS_MODULE);  in m41t94_probe()
132 	dev_set_drvdata(&spi->dev, rtc);  in m41t94_probe()
137 static int __devexit m41t94_remove(struct spi_device *spi)  in m41t94_remove()  argument
139 	struct rtc_device *rtc = spi_get_drvdata(spi);  in m41t94_remove()
171 MODULE_DESCRIPTION("Driver for ST M41T94 SPI RTC");
173 MODULE_ALIAS("spi:rtc-m41t94");