Re: [PATCH 0/2] iio: driver for Semtech SX9500

[Jonathan Cameron <jic23@kernel.org>]

On 18/11/14 22:02, Jonathan Cameron wrote:
> On 17/11/14 15:25, Peter Meerwald wrote:
>>
>>> The device does not estimate distance, it only outputs a single bit which
>>> indicates proximity.  We use 0 to mean that an object is close and 1 otherwise,
>>> sort of an uncalibrated distance.  From what I understand in the ABI
>>> specification, this is allowed.
>>
>> perhaps the input subsystem would be a better fit for this driver/device?
>> what is it typically used for?
>>
>> regards, p.
>>
> Hi Peter,
> 
> Whilst it may be the case that this particular one might have a reasonable
> home in input, these are often integrated with ambient light sensors
> and as such we already have a quite a few proximity sensors in IIO...
> 
> Interestingly there is one obvious proximity sensor in input and that
> is a dual ambient light/ proximity part though I can't see any way
> of reading the light side of it.  Interesting...
Note that, given it describes itself as a button trip I can entirely see
your point with this one!  I wrote my reply before opening the datasheet.
oops.

The device does seem to provide access to measurements related to
the capacitance sensed so might be rather more flexible than just
a button though.