3  * Driver for Dallas Semiconductor (DS3234) SPI RTC with Integrated Crystal
19 #include <linux/spi/spi.h>
37 	struct spi_device *spi = to_spi_device(dev);  in ds3234_set_reg()  local
44 	return spi_write_then_read(spi, buf, 2, NULL, 0);  in ds3234_set_reg()
50 	struct spi_device *spi = to_spi_device(dev);  in ds3234_get_reg()  local
54 	return spi_write_then_read(spi, data, 1, data, 1);  in ds3234_get_reg()
61 	struct spi_device *spi = to_spi_device(dev);  in ds3234_read_time()  local
65 	err = spi_write_then_read(spi, buf, 1, buf, 8);  in ds3234_read_time()
108 static int __devinit ds3234_probe(struct spi_device *spi)  in ds3234_probe()  argument
114 	spi->mode = SPI_MODE_3;  in ds3234_probe()
115 	spi->bits_per_word = 8;  in ds3234_probe()
116 	spi_setup(spi);  in ds3234_probe()
118 	res = ds3234_get_reg(&spi->dev, DS3234_REG_SECONDS, &tmp);  in ds3234_probe()
136 	ds3234_get_reg(&spi->dev, DS3234_REG_CONTROL, &tmp);  in ds3234_probe()
137 	ds3234_set_reg(&spi->dev, DS3234_REG_CONTROL, tmp & 0x1c);  in ds3234_probe()
139 	ds3234_get_reg(&spi->dev, DS3234_REG_CONT_STAT, &tmp);  in ds3234_probe()
140 	ds3234_set_reg(&spi->dev, DS3234_REG_CONT_STAT, tmp & 0x88);  in ds3234_probe()
143 	ds3234_get_reg(&spi->dev, DS3234_REG_CONTROL, &tmp);  in ds3234_probe()
144 	dev_info(&spi->dev, "Control Reg: 0x%02x\n", tmp);  in ds3234_probe()
146 	ds3234_get_reg(&spi->dev, DS3234_REG_CONT_STAT, &tmp);  in ds3234_probe()
147 	dev_info(&spi->dev, "Ctrl/Stat Reg: 0x%02x\n", tmp);  in ds3234_probe()
150 				&spi->dev, &ds3234_rtc_ops, THIS_MODULE);  in ds3234_probe()
154 	dev_set_drvdata(&spi->dev, rtc);  in ds3234_probe()
159 static int __devexit ds3234_remove(struct spi_device *spi)  in ds3234_remove()  argument
161 	struct rtc_device *rtc = spi_get_drvdata(spi);  in ds3234_remove()
188 MODULE_DESCRIPTION("DS3234 SPI RTC driver");
191 MODULE_ALIAS("spi:ds3234");