Guidance for a first IIO sensor driver contribution

[Olivier Tanoh]

Hi all,

I'm an embedded Linux engineer looking to contribute my first sensor
driver to IIO. I'm familiar with the submission process (I've had
patches merged to staging), and I've studied the structure of existing
IIO drivers, si7005.c in particular, so I'm comfortable with probe,
channel definitions and read_raw.

I have I2C hardware for testing (Raspberry Pi CM4), so I can buy a
part and validate on real hardware.

My difficulty is picking a target. Most of the simple
temperature/humidity sensors I looked at (SHT3x, AHT20, ...) already
have hwmon drivers, and the recent parts I found in vendor catalogs
(e.g. MAX30210) are already being submitted upstream.

Two questions:

Are there sensors the IIO community would like to see supported that
currently have no driver?
For a sensor that already has an hwmon driver, is an IIO driver
considered worthwhile (for buffer/trigger support), or is that
generally seen as redundant?

I'd rather pick something useful than duplicate existing work. Any
guidance would be appreciated.

Thanks,
Olivier Tanoh