[PATCH v3 0/8] Add support for magnetometer Yamaha YAS537

[Jakob Hauser <jahau@rocketmail.com>]

This patchset adds YAS537 variant to the already existing driver for
Yamaha YAS magnetometers.

Patch 1 is a fix on the current driver.
Patches 2-7 are cleanups and refactoring.
Patch 8 finally adds the YAS537 variant.

Changes in v3:
 - In patch 3 fixed 2x typo "Divide".
 - In commit message of patch 4 fixed wording "in the yas5xx_get_measure()
   function".
 - In patch 4 in the comment for the temperature calculation fixed wording
   "is the number of counts".
 - In patch 4 added defaults to switch statements.
 - Splitted stray changes into new patch 7 v3. "Add YAS537 variant" is now
   patch 8 v3. I haven't added "Reviewed-by:" tag of Linus to patch 7 v3
   because as a separate patch these changes appear in a different context.
 - In new patch 7 v3, changed printk format specifiers in the function
   yas530_get_calibration_data() to "%16ph" and in the function
   yas532_get_calibration_data() to "%14ph". The first one is also a minor
   correction in behaviour, as the calibration data array size of YAS530
   is 16 (the dev_dbg printed 14 before).
 - Rebased to linux-next to include patch bb52d3691db8 "iio: magnetometer:
   yas530: Fix memchr_inv() misuse".
 - In patch 7 v3, changed memchr_inv() line for YAS532.
 - In patch 8 v3 in the function yas537_get_calibration_data(), changed
   memchr_inv() line for YAS537.
 - Removed comment "corresponds to 0x70" at define YAS537_MAG_AVERAGE_32_MASK.
 - Added suffixes _US and _MS in defines for YAS537.
 - In the function yas537_measure(), removed comments "Read data", "Arrange
   data", "Assign data".
 - In the function yas537_measure(), replaced bitwise shift by
   get_unaligned_be16().
 - Replaced "if (h[i] < -8192)" etc. by clamp_val().
 - In the functions yas537_measure() and yas537_get_measure(), replaced 8192
   by BIT(13) and 16384 by BIT(14).
 - Fixed typo "resolution" in the function yas5xx_read_raw().
 - Fixed typo "Divide" in patch 8 v3 in the function yas5xx_read_raw().
 - In patch 8 v3 in the yas537_get_calibration_data(), changed printk format
   specifier to "%17ph"
 - In the functions yas537_measure() and yas537_get_calibration_data(), drop
   some parentheses in regmap_write().
 - In the function yas537_power_on(), added comment "Wait until the coil has
   ramped up".
 - In the function yas5xx_probe(), put YAS537 variant and version printings
   into one print.
 - In the function yas537_get_measure(), fixed wording "is the number of
   counts" in the comment for the temperature calculation.
 - In the function yas537_get_measure(), added product description document No.
   into the comment for the temperature calculation (as I first thought the
   review comment "the number" is related to this).
 - In the function yas537_get_calibration_data(), corrected comment "Get data
   into these four blocks val1 to val4".

Changes in v2:
 - Reordered the patchset by moving patch 4 v1 to patch 1 v2.
 - Removed patch 6 v1 ("Remove redundant defaults on switch devid")
 - Accordingly, added "default:" to each switch statement in patch 7.
 - Moved renamings in patch 7 v1 into a separate new patch 6 v2. I added
   the "Reviewed-by:" tag of Linus to both patches, hope that's ok, else
   feel free to comment.
 - Removed regmap reads and related debug dumps in patch 7 in function
   yas537_dump_calibration(). As this function now applies to version 1
   only, replaced switch statement by if clause.
 - Also removed "hard_offsets" debug dumps in that function.
 - Fixed typo "initialized" in commit message of patch 7.

Jakob Hauser (8):
  iio: magnetometer: yas530: Change data type of hard_offsets to signed
  iio: magnetometer: yas530: Change range of data in volatile register
  iio: magnetometer: yas530: Correct scaling of magnetic axes
  iio: magnetometer: yas530: Correct temperature handling
  iio: magnetometer: yas530: Change data type of calibration
    coefficients
  iio: magnetometer: yas530: Rename functions and registers
  iio: magnetometer: yas530: Apply minor cleanups
  iio: magnetometer: yas530: Add YAS537 variant

 drivers/iio/magnetometer/Kconfig         |   4 +-
 drivers/iio/magnetometer/yamaha-yas530.c | 797 +++++++++++++++++++----
 2 files changed, 688 insertions(+), 113 deletions(-)

-- 
2.35.1