Support ROHM BU27010 RGBC + flickering sensor. Following description copied from commit log: > The ROHM BU27010 is an RGBC sensor with a flickering detection FIFO. The > RGBC+IR sensor functionality is largely similar to what the BU27008 has. > There are some notable things though: > - gain setting is once again new and exotic. Now, there is 6bit gain > setting where 4 of the bits are common to all channels and 2 bits > can be configured separately for each channel. The BU27010 has > similar "1X on other channels vs 2X on IR when selector is 0x0" > gain design as BU27008 had. So, we use same gain setting policy for > BU27010 as we did for BU27008 - driver sets same gain selector for > all channels but shows the gains separately for all channels so users > can (at least in theory) detect this 1X vs 2X madness... > - BU27010 has suffled all the control register bitfields to new > addresses and bit positions while still keeping the register naming > same. > - Some more power/reset control is added. > - FIFO for "flickering detection" is added. > > The control register suffling made this slightly nasty. Still, it is > easier for maintenance perspective to add the BU27010 support in BU27008 > driver because - even though the bit positions/addresses were changed - > most of the driver structure can be re-used. Writing own driver for > BU27010 would mean plenty of duplicate code albeit a tad more clarity. Revision history: v2 => v3: - minor styling and added comment - rebased on iio-fixes-for-6.5a which contains prerequisite patches v1 => v2: - make vdd-supply required binding. - Some re-ordering for struct member init. - Some re-ordering for code to get rid of function declarations. - Tidy up the mess from patch 2/3. - Refactor parts from 3/3 to 2/3. - Clean-up commented out code and tidy things in general. --- Matti Vaittinen (3): dt-bindings: iio: ROHM BU27010 RGBC + flickering sensor iio: light: bu27008: add chip info iio: light: bd27008: Support BD27010 RGB .../bindings/iio/light/rohm,bu27010.yaml | 49 ++ drivers/iio/light/rohm-bu27008.c | 630 ++++++++++++++---- 2 files changed, 565 insertions(+), 114 deletions(-) create mode 100644 Documentation/devicetree/bindings/iio/light/rohm,bu27010.yaml base-commit: 8a4629055ef55177b5b63dab1ecce676bd8cccdd -- 2.40.1 -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =]
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