Re: Guidance for a first IIO sensor driver contribution

[Jonathan Cameron <jic23@kernel.org>]

On Thu, 6 Aug 2026 16:14:05 +0200
Olivier Tanoh <olivier.tanoh19@gmail.com> wrote:

> Hi all,

Hi Olivier,

Would have been better to reply to you earlier thread with the additional
context of the replies to that available to anyone seeing this message.

> 
> 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.
> 
No particular suggestions from me.

> 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?

Very very rarely does it make sense to move a driver between subsystems
and it is painful to do.

Jonathan

> 
> I'd rather pick something useful than duplicate existing work. Any
> guidance would be appreciated.
> 
> Thanks,
> Olivier Tanoh
>