This patchset adds BMP380 variant to the already existing drivers for
the Bosch BMP180/280 pressure sensors.
Patch 1 is a minor refactor simplifying driver initialization logic
to facilitate the integration of the new sensor variant extending the
information stored in the "chip_info" struct.
Patch 2 fixes DMA unsafe regmap_bulk_* calls reported by Jonathan Cameron
<jic23@xxxxxxxxxx>.
Patch 3 adds the basic logic to initialize and read measurements from
the sensor.
Patch 4 adds references and sensor id to the devicetree bindings docs.
Patch 5 adds advanced configurable features such as sampling frequency
and IIR filter through the IIO sysfs ABI.
Changes in v5:
- Moved dt bindings patch (previously patch 2/5) to 4/5 to preserve
tree coherence as suggested by Jonathan Cameron <jic23@xxxxxxxxxx>
- Patch 1: Simplified initial oversampling values assignation.
- Patch 1: Updated codepaths for bmp180 and bmp280 to use FIELD_GET and
FIELD_GET helpers. Migrated compatible masks to use GENMASK.
- Patch 2: Store DMA-safe buffers on the device data struct instead of
using dynamic allocations for calibration buffers.
Thanks Jonathan Cameron <jic23@xxxxxxxxxx>.
- Patch 3: Fixed small typos
- Patch 3: Fixed incompatible division on 32-bit machines reported by
Andy Shevchenko <andy.shevchenko@xxxxxxxxx> and kernel test robot
<lkp@xxxxxxxxx>.
- Patch 3: Fixed inconsistent use of "x" and "X" declaring constants.
- Patch 5: Dropped incorrect reported-by tag on changelog message.
- Patch 5: Fixed typos on various comments.
Changes in v4:
- Patch 4 and 2: Merged v3 patch 2 (Kconfig refs update) into this patch.
- Patch 3: Added patch fixing unsafe DMA regmap_bulk_* calls reported by
Jonathan Cameron <jic23@xxxxxxxxxx>.
- Patch 4: Fixed DMA unsafe buffers used on regmap_bulk_* calls reported
by Jonathan Cameron <jic23@xxxxxxxxxx>.
Changes in v3:
- Patch 2: Fixed incorrect abbreviation.
- Patch 3: use dev_err_probe helper to handle error initializing sensor.
- Patch 4: Fixed kernel test robot warning provoked by missing include.
- Patch 4: Fixed bug reported by Dan Carpenter <dan.carpenter@xxxxxxxxxx>.
- Patch 5: Fixed formatting and typos on multiple comments.
- Patch 5: Fixed missing boolean initialization reported by
Andy Shevchenko <andy.shevchenko@xxxxxxxxx>.
- Patch 5: Replaced duplicated comments with a single comment containing
a brief explantation in a shared location.
- Patch 5: Dropped incorrect use of unlikely macro.
Changes in v2:
- Added patch 2 updating Kconfig with references to new sensor.
- Patch 3 adds changes proposed by Jonathan Cameron <jic23@xxxxxxxxxx>
to declutter and unify configuration logic for the different sensors
extending "chip_info" struct with default configuration parameters.
- Patch 4: store temperature and pressure adc values on 3 byte array
instead of using the type __le32. Uses function get_unaligned_le24
to convert the little-endian encoded 3 byte value to an integer.
- Patch 4: drops custom macro le16_from_bytes and use get_unaligned_le16.
- Patch 4: generate masks using GENMASK macro.
- Patch 4: use FIELD_PREP to generate bitfields for registries.
- Patch 4: dropped stray formatting change.
- Patch 5: adds sanity checks in bmp280_read_raw for channel properties
only available in the BMP380.
- Patch 5: on bmp280_write_* checks if a problem occurred committing new
configuration and tries to restore previous working configuration
to keep the sensor in a previous working state.
- Patch 5: refactored bmp380_chip_config to only check for configuration
errors when a configuration change is detected.
- Patch 5: improved invalid configuration detection on BMP380 restarting
measurement loop to force a new measurement after the configuration is
updated.
Previous patch version available on:
https://lore.kernel.org/all/cover.1658597501.git.ang.iglesiasg@xxxxxxxxx/
Angel Iglesias (5):
iio: pressure: bmp280: simplify driver initialization logic
iio: pressure: bmp280: Fix alignment for DMA safety
iio: pressure: bmp280: Add support for BMP380 sensor family
dt-bindings: iio: pressure: bmp085: Add BMP380 compatible string
iio: pressure: bmp280: Add more tunable config parameters for BMP380
.../bindings/iio/pressure/bmp085.yaml | 4 +-
drivers/iio/pressure/Kconfig | 6 +-
drivers/iio/pressure/bmp280-core.c | 866 +++++++++++++++---
drivers/iio/pressure/bmp280-i2c.c | 5 +
drivers/iio/pressure/bmp280-regmap.c | 55 ++
drivers/iio/pressure/bmp280-spi.c | 5 +
drivers/iio/pressure/bmp280.h | 159 +++-
7 files changed, 952 insertions(+), 148 deletions(-)
base-commit: 180c6cb6b9b79c55b79e8414f4c0208f2463af7d
--
2.37.1
