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    Subject[PATCH v2 3/3] iio: gyro: adxrs290: Add debugfs register access support
    Date
    Extend support to read/write byte data from/to the device using
    debugfs iio interface.

    Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
    ---

    No changes in v2
    ---
    drivers/iio/gyro/adxrs290.c | 19 +++++++++++++++++++
    1 file changed, 19 insertions(+)

    diff --git a/drivers/iio/gyro/adxrs290.c b/drivers/iio/gyro/adxrs290.c
    index 4099b8917d3e..132fd16789f0 100644
    --- a/drivers/iio/gyro/adxrs290.c
    +++ b/drivers/iio/gyro/adxrs290.c
    @@ -434,6 +434,24 @@ static int adxrs290_read_avail(struct iio_dev *indio_dev,
    }
    }

    +static int adxrs290_reg_access(struct iio_dev *indio_dev, unsigned int reg,
    + unsigned int writeval, unsigned int *readval)
    +{
    + struct adxrs290_state *st = iio_priv(indio_dev);
    + int ret;
    +
    + if (!readval)
    + return adxrs290_spi_write_reg(st->spi, reg, writeval);
    +
    + ret = spi_w8r8(st->spi, ADXRS290_READ_REG(reg));
    + if (ret < 0)
    + return ret;
    +
    + *readval = ret;
    +
    + return 0;
    +}
    +
    static int adxrs290_data_rdy_trigger_set_state(struct iio_trigger *trig, bool state)
    {
    struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
    @@ -546,6 +564,7 @@ static const struct iio_info adxrs290_info = {
    .read_raw = &adxrs290_read_raw,
    .write_raw = &adxrs290_write_raw,
    .read_avail = &adxrs290_read_avail,
    + .debugfs_reg_access = &adxrs290_reg_access,
    };

    static int adxrs290_probe_trigger(struct iio_dev *indio_dev)
    --
    2.20.1
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