iio: kx022a: document new chip_info structure members

The kx022a driver supports a few different HW variants. A chip-info
structure is used to describe sensor specific details. Support for
sensors with different measurement g-ranges was added recently,
introducing sensor specific scale arrays.

The members of the chip-info structure have been documented using
kerneldoc. The newly added members omitted the documentation. It is nice
to have all the entries documented for the sake of the consistency.
Furthermore, the scale table format may not be self explatonary, nor how
the amount of scales is informed.

Add documentation to scale table entries to maintain consistency and to
make it more obvious how the scales should be represented.

Suggested-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Link: https://patch.msgid.link/Z1LDUj-naUdGSM6n@mva-rohm
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/accel/kionix-kx022a.h b/drivers/iio/accel/kionix-kx022a.h
index 142652ff4b22874d5197ee4908b029b3c4d5969e..0ed54f58422359e52e4c76b36235b38452cad287 100644 (file)
--- a/drivers/iio/accel/kionix-kx022a.h
+++ b/drivers/iio/accel/kionix-kx022a.h
@@ -137,6 +137,14 @@ struct kx022a_data;
  *
  * @name:                      name of the device
  * @regmap_config:             pointer to register map configuration
+ * @scale_table:               An array of tables of scaling factors for
+ *                             a supported acceleration measurement range.
+ *                             Each table containing a single scaling
+ *                             factor consisting of two integers. The first
+ *                             value in a table is the integer part, and
+ *                             the second value is the fractional part as
+ *                             parts per billion.
+ * @scale_table_size:          Amount of values in tables.
  * @channels:                  pointer to iio_chan_spec array
  * @num_channels:              number of iio_chan_spec channels
  * @fifo_length:               number of 16-bit samples in a full buffer