[PATCH 0/6] iio: hid-sensor: standardize scan_type initialization

[Natália Salvino André]

This series refactors the HID sensor drivers to standardize the
initialization of the iio_chan_spec scan_type structure using compound
literals.

This change improves code readability and ensures that all fields of the
scan_type structure are properly zero-initialized, allowing the removal
of local helper functions.

Additionally, the channel initialization loops for the hid-sensor-accel-3d
and hid-sensor-gyro-3d were cleaned up to iterate directly over the scan
indices, eliminating redundant index-offset logic.

---

Changes in v4:

- Fixed a bug in the sensor_hub_input_get_attribute_info()
call where passing the raw loop index 'ch' broke the HID report
field lookup in hid-sensor-accel-3d. Restored the proper HID
usage ID offset calculation using HID_USAGE_SENSOR_ACCEL_X_AXIS + ch
- Cleaned up the channel initialization loop to iterate
directly over the scan indices in hid-sensor-gyro-3d for consistency

Changes in v3:

- Dropped the global helper function implementation from 
hid-sensor-attributes.c following maintainer feedback.
- Shifted to local refactoring inside the drivers using compound
literals and the  macros BYTES_TO_BITS() and BITS_PER_TYPE()
- Refactored the channel initialization loop in hid-sensor-accel-3d to
iterate directly over the scan enums instead of using 0-based
index offsets

Changes in v2:

- Modified the helper function to use the BITS_PER_BYTE macro instead of
magic numbers for bit calculations
- Updated the scan_type structure field assignment from '.sign'
to '.format' based on recent subsystem renaming feedback

Natália Salvino André (6):
  iio: accel: HID: hid-sensor-accel-3d: Refactor channel initialization
  iio: gyro: HID: hid-sensor-gyro-3d: Refactor channel initialization
  iio: light: HID: hid-sensor-als: Refactor channel initialization
  iio: light: HID: hid-sensor-prox: Refactor channel initialization
  iio: magnetometer: HID: hid-sensor-magn-3d: Refactor channel
    initialization
  iio: pressure: HID: hid-sensor-press: Refactor channel initialization

 drivers/iio/accel/hid-sensor-accel-3d.c       | 27 +++++++------------
 drivers/iio/gyro/hid-sensor-gyro-3d.c         | 27 +++++++------------
 drivers/iio/light/hid-sensor-als.c            | 18 +++++--------
 drivers/iio/light/hid-sensor-prox.c           | 19 +++++--------
 drivers/iio/magnetometer/hid-sensor-magn-3d.c | 20 +++++---------
 drivers/iio/pressure/hid-sensor-press.c       | 19 +++++--------
 6 files changed, 42 insertions(+), 88 deletions(-)

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2.51.0