79 static int ads7871_read_reg8(struct spi_device *spi, int reg)  in ads7871_read_reg8()  argument
83 	ret = spi_w8r8(spi, reg);  in ads7871_read_reg8()
87 static int ads7871_read_reg16(struct spi_device *spi, int reg)  in ads7871_read_reg16()  argument
91 	ret = spi_w8r16(spi, reg);  in ads7871_read_reg16()
95 static int ads7871_write_reg8(struct spi_device *spi, int reg, u8 val)  in ads7871_write_reg8()  argument
98 	return spi_write(spi, tmp, sizeof(tmp));  in ads7871_write_reg8()
104 	struct spi_device *spi = to_spi_device(dev);  in show_voltage()  local
116 	ads7871_write_reg8(spi, REG_GAIN_MUX,  in show_voltage()
119 	ret = ads7871_read_reg8(spi, REG_GAIN_MUX);  in show_voltage()
127 		ret = ads7871_read_reg8(spi, REG_GAIN_MUX);  in show_voltage()
133 		val = ads7871_read_reg16(spi, REG_LS_BYTE);  in show_voltage()
176 static int ads7871_probe(struct spi_device *spi)  in ads7871_probe()  argument
182 	dev_dbg(&spi->dev, "probe\n");  in ads7871_probe()
185 	spi->mode = (SPI_MODE_0);  in ads7871_probe()
186 	spi->bits_per_word = 8;  in ads7871_probe()
187 	spi_setup(spi);  in ads7871_probe()
189 	ads7871_write_reg8(spi, REG_SER_CONTROL, 0);  in ads7871_probe()
190 	ads7871_write_reg8(spi, REG_AD_CONTROL, 0);  in ads7871_probe()
193 	ads7871_write_reg8(spi, REG_OSC_CONTROL, val);  in ads7871_probe()
194 	ret = ads7871_read_reg8(spi, REG_OSC_CONTROL);  in ads7871_probe()
196 	dev_dbg(&spi->dev, "REG_OSC_CONTROL write:%x, read:%x\n", val, ret);  in ads7871_probe()
204 	pdata = devm_kzalloc(&spi->dev, sizeof(struct ads7871_data),  in ads7871_probe()
209 	err = sysfs_create_group(&spi->dev.kobj, &ads7871_group);  in ads7871_probe()
213 	spi_set_drvdata(spi, pdata);  in ads7871_probe()
215 	pdata->hwmon_dev = hwmon_device_register(&spi->dev);  in ads7871_probe()
224 	sysfs_remove_group(&spi->dev.kobj, &ads7871_group);  in ads7871_probe()
228 static int ads7871_remove(struct spi_device *spi)  in ads7871_remove()  argument
230 	struct ads7871_data *pdata = spi_get_drvdata(spi);  in ads7871_remove()
233 	sysfs_remove_group(&spi->dev.kobj, &ads7871_group);  in ads7871_remove()