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| author | Lothar Rubusch <l.rubusch@gmail.com> | 2024-04-01 22:49:06 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-04-06 18:18:39 +0300 |
| commit | 2f896dd97cedbf6a8a7a14f4c6090d2b088cb694 (patch) | |
| tree | 5c21814109eafeba3a05042b08748f1a6b18e7f6 /drivers/iio/accel | |
| parent | 34ca62caa0dd7c62b57e5b48a69af677c7a63824 (diff) | |
| download | linux-2f896dd97cedbf6a8a7a14f4c6090d2b088cb694.tar.xz | |
iio: accel: adxl345: Add spi-3wire option
Add a setup function implementation to the spi module to enable spi-3wire
when specified in the device-tree. If spi-3wire is not specified in the
device-tree, NULL is returned as bus pre-initialization. This behavior
is identical to the i2c initialization, hence the default initialization.
Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Link: https://lore.kernel.org/r/20240401194906.56810-9-l.rubusch@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/accel')
| -rw-r--r-- | drivers/iio/accel/adxl345.h | 1 | ||||
| -rw-r--r-- | drivers/iio/accel/adxl345_spi.c | 10 |
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/iio/accel/adxl345.h b/drivers/iio/accel/adxl345.h index e859c01d4bff..3d5c8719db3d 100644 --- a/drivers/iio/accel/adxl345.h +++ b/drivers/iio/accel/adxl345.h @@ -31,6 +31,7 @@ #define ADXL345_DATA_FORMAT_RANGE GENMASK(1, 0) /* Set the g range */ #define ADXL345_DATA_FORMAT_JUSTIFY BIT(2) /* Left-justified (MSB) mode */ #define ADXL345_DATA_FORMAT_FULL_RES BIT(3) /* Up to 13-bits resolution */ +#define ADXL345_DATA_FORMAT_SPI_3WIRE BIT(6) /* 3-wire SPI mode */ #define ADXL345_DATA_FORMAT_SELF_TEST BIT(7) /* Enable a self test */ #define ADXL345_DATA_FORMAT_2G 0 diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c index 1c0513bd3b9b..57e16b441702 100644 --- a/drivers/iio/accel/adxl345_spi.c +++ b/drivers/iio/accel/adxl345_spi.c @@ -20,6 +20,11 @@ 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) +{ + return regmap_write(regmap, ADXL345_REG_DATA_FORMAT, ADXL345_DATA_FORMAT_SPI_3WIRE); +} + static int adxl345_spi_probe(struct spi_device *spi) { struct regmap *regmap; @@ -33,7 +38,10 @@ 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, NULL); + if (spi->mode & SPI_3WIRE) + return adxl345_core_probe(&spi->dev, regmap, adxl345_spi_setup); + else + return adxl345_core_probe(&spi->dev, regmap, NULL); } static const struct adxl345_chip_info adxl345_spi_info = { |