Add the spi-3wire feature to the iio driver. Pass a function pointer to configure the device if 3-wire was configured in the device-tree. Signed-off-by: Lothar Rubusch <l.rubusch@xxxxxxxxx> --- drivers/iio/accel/adxl345_spi.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c index c26bac462..aea368895 100644 --- a/drivers/iio/accel/adxl345_spi.c +++ b/drivers/iio/accel/adxl345_spi.c @@ -20,6 +20,16 @@ static const struct regmap_config adxl345_spi_regmap_config = { .read_flag_mask = BIT(7) | BIT(6), }; +static int adxl345_spi_setup(struct device *dev, struct regmap *regmap) +{ + struct spi_device *spi = container_of(dev, struct spi_device, dev); + + if (spi->mode & SPI_3WIRE) + return regmap_write(regmap, ADXL345_REG_DATA_FORMAT, + ADXL345_DATA_FORMAT_SPI); + return 0; +} + static int adxl345_spi_probe(struct spi_device *spi) { const struct adxl345_chip_info *chip_data; @@ -39,7 +49,7 @@ static int adxl345_spi_probe(struct spi_device *spi) if (IS_ERR(regmap)) return dev_err_probe(&spi->dev, PTR_ERR(regmap), "Error initializing regmap\n"); - return adxl345_core_probe(&spi->dev, regmap, chip_data, NULL); + return adxl345_core_probe(&spi->dev, regmap, chip_data, &adxl345_spi_setup); } static const struct spi_device_id adxl345_spi_id[] = { -- 2.25.1