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
