59 	struct spi_device *spi = to_spi_device(dev);  in ds1390_set_reg()  local
66 	spi_write(spi, buf, 2);  in ds1390_set_reg()
72 	struct spi_device *spi = to_spi_device(dev);  in ds1390_get_reg()  local
82 	status = spi_write_then_read(spi, chip->txrx_buf, 1, chip->txrx_buf, 1);  in ds1390_get_reg()
91 static void ds1390_trickle_of_init(struct spi_device *spi)  in ds1390_trickle_of_init()  argument
96 	if (of_property_read_u32(spi->dev.of_node, "trickle-resistor-ohms",  in ds1390_trickle_of_init()
102 	if (of_property_read_bool(spi->dev.of_node, "trickle-diode-disable"))  in ds1390_trickle_of_init()
119 		dev_warn(&spi->dev,  in ds1390_trickle_of_init()
124 	ds1390_set_reg(&spi->dev, DS1390_REG_TRICKLE, value);  in ds1390_trickle_of_init()
132 	struct spi_device *spi = to_spi_device(dev);  in ds1390_read_time()  local
140 	status = spi_write_then_read(spi, chip->txrx_buf, 1, chip->txrx_buf, 8);  in ds1390_read_time()
161 	struct spi_device *spi = to_spi_device(dev);  in ds1390_set_time()  local
176 	return spi_write_then_read(spi, chip->txrx_buf, 8, NULL, 0);  in ds1390_set_time()
184 static int ds1390_probe(struct spi_device *spi)  in ds1390_probe()  argument
190 	spi->mode = SPI_MODE_3;  in ds1390_probe()
191 	spi->bits_per_word = 8;  in ds1390_probe()
192 	spi_setup(spi);  in ds1390_probe()
194 	chip = devm_kzalloc(&spi->dev, sizeof(*chip), GFP_KERNEL);  in ds1390_probe()
198 	spi_set_drvdata(spi, chip);  in ds1390_probe()
200 	res = ds1390_get_reg(&spi->dev, DS1390_REG_SECONDS, &tmp);  in ds1390_probe()
202 		dev_err(&spi->dev, "unable to read device\n");  in ds1390_probe()
206 	if (spi->dev.of_node)  in ds1390_probe()
207 		ds1390_trickle_of_init(spi);  in ds1390_probe()
209 	chip->rtc = devm_rtc_device_register(&spi->dev, "ds1390",  in ds1390_probe()
212 		dev_err(&spi->dev, "unable to register device\n");  in ds1390_probe()