[PATCH v2 00/19] iio: chemical: bme680: Driver fixes and cleanup

[Vasileios Amoiridis]

Changes in v2:

Patch 4/19:
	- Combined the bme680_conversion_time_us() and bme680_wait_for_eoc()
	  into one function.
	- Added better comment for the calculation.
	- Added checks in the bme680_wait_for_eoc() function.

Patch 5/19:
	- Fixed typo in commit message.

Patch 6/19:
	- Added a fixes tag since without the mutexes, read operations can be
	  broken.

Patch 10/19:
	- Converted shifting operation to FIELD_GET()

Patch 11/19:
	- Changed convention from &data->bufer[0] to data->buffer.
	- Removed IIO_DMA_MINALIGN as it is not needed anymore.

Patch 13/19:
	- Removed IIO_DMA_MINALIGN

Patch 14/19:
	- Splitted from Patch v1 14/19

Patch 15/19:
	- Splitted from Patch v1 14/19

Patch 16/19: **NEW**
	- Use dev_err_probe() where applicable.

v1: https://lore.kernel.org/linux-iio/20240527183805.311501-1-vassilisamir@xxxxxxxxx/

This started as a series to add support for buffers and the new
BME688 but it ended up being just a cleaning series. These might
be quite some patches for such a thing but I feel that they are
are well split, in order to allow for better review.

The patches are mostly small changes but essential for the correct use
of the driver. The first patches looked like fixes that should be
marked for the stable. Patches [11,17/17] might be a bit bigger but 11/17
is quite straightforward and 17/17 is basically a duplication of a
very similar commit coming from the BMP280 driver [1].

In general, the datasheet [2] of the driver is not very descriptive,
and it redirects the user to the BME68x Sensor API [3]. All the things
that were identified from the BME68x Sensor API have been marked with
links to the original locations of the GitHub code. If this is too much
and we don't want this type of information on the commit message, please
let me know and I will fix it.

[1]: https://lore.kernel.org/linux-iio/20240512230524.53990-1-vassilisamir@xxxxxxxxx/T/#mc6f814e9a4f8c2b39015909d174c7013b3648b9b
[2]: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme680-ds001.pdf
[3]: https://github.com/boschsensortec/BME68x_SensorAPI/tree/master

Vasileios Amoiridis (19):
  iio: chemical: bme680: Fix pressure value output
  iio: chemical: bme680: Fix calibration data variable
  iio: chemical: bme680: Fix overflows in compensate() functions
  iio: chemical: bme680: Fix sensor data read operation
  iio: chemical: bme680: Fix typo in define
  iio: chemical: bme680: Fix read/write ops to device by adding mutexes
  iio: chemical: bme680: Drop unnecessary casts and correct adc data
    types
  iio: chemical: bme680: Remove remaining ACPI-only stuff
  iio: chemical: bme680: Sort headers alphabetically
  iio: chemical: bme680: Remove duplicate register read
  iio: chemical: bme680: Use bulk reads for calibration data
  iio: chemical: bme680: Allocate IIO device before chip initialization
  iio: chemical: bme680: Add read buffers in DMA safe region
  iio: chemical: bme680: Make error checks consistent
  iio: chemical: bme680: Modify startup procedure
  iio: chemical: bme680: Move probe errors to dev_err_probe()
  iio: chemical: bme680: Remove redundant gas configuration
  iio: chemical: bme680: Move forced mode setup in ->read_raw()
  iio: chemical: bme680: Refactorize reading functions

 drivers/iio/chemical/bme680.h      |  43 +-
 drivers/iio/chemical/bme680_core.c | 669 ++++++++++++++---------------
 2 files changed, 337 insertions(+), 375 deletions(-)


base-commit: b3019fcdeb286b2cfe45e44bccb44dbcd8ff66dd
-- 
2.25.1