iio: gyro: adxrs290: Add debugfs register access support
Extend support to read/write byte data from/to the device using debugfs iio interface. Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20200910180450.29696-4-nish.malpani25@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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@ -436,6 +436,31 @@ static int adxrs290_read_avail(struct iio_dev *indio_dev,
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}
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}
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static int adxrs290_reg_access_rw(struct spi_device *spi, unsigned int reg,
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unsigned int *readval)
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{
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int ret;
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ret = spi_w8r8(spi, ADXRS290_READ_REG(reg));
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if (ret < 0)
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return ret;
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*readval = ret;
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return 0;
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}
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static int adxrs290_reg_access(struct iio_dev *indio_dev, unsigned int reg,
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unsigned int writeval, unsigned int *readval)
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{
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struct adxrs290_state *st = iio_priv(indio_dev);
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if (readval)
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return adxrs290_reg_access_rw(st->spi, reg, readval);
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else
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return adxrs290_spi_write_reg(st->spi, reg, writeval);
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}
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static int adxrs290_data_rdy_trigger_set_state(struct iio_trigger *trig,
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bool state)
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{
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@ -551,6 +576,7 @@ static const struct iio_info adxrs290_info = {
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.read_raw = &adxrs290_read_raw,
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.write_raw = &adxrs290_write_raw,
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.read_avail = &adxrs290_read_avail,
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.debugfs_reg_access = &adxrs290_reg_access,
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};
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static int adxrs290_probe_trigger(struct iio_dev *indio_dev)
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