Re: [PATCH v4] iio : Add cm3218 smbus ara and acpi support

[Phil Reid]

On 2/11/2017 22:49, Srinivas Pandruvada wrote:
> On Thu, 2017-11-02 at 14:35 +0000, Jonathan Cameron wrote:
> > On Fri, 27 Oct 2017 18:27:02 +0200
> > Marc CAPDEVILLE <m.capdeville@xxxxxxxxxx> wrote:
> >
> > > On asus T100, Capella cm3218 chip is implemented as ambiant light
> > > sensor. This chip expose an smbus ARA protocol device on standard
> > > address 0x0c. The chip is not functional before all alerts are
> > > acknowledged.
> > > On asus T100, this device is enumerated on ACPI bus and the
> > > description give tow I2C connection. The first is the connection to
> > > the ARA device and the second gives the real address of the device.
> > >
> > > So, on device probe,If the i2c address is the ARA address and the
> > > device is enumerated via acpi, we lookup for the real address in
> > > the ACPI resource list and change it in the client structure.
> > > if an interrupt resource is given, and only for cm3218 chip,
> > > we declare an smbus_alert device.
> > >
> > > Signed-off-by: Marc CAPDEVILLE <m.capdeville@xxxxxxxxxx>
> > Wolfram - this needs input from you on how to neatly handle
> > an ACPI registered ARA.
> There was another RFC from Alan cox
> https://patchwork.ozlabs.org/patch/381773/

Wolfram just merged this from me:
[PATCH v11 00/10] Add sbs-manager with smbalert support
https://www.spinics.net/lists/devicetree/msg191947.html

Cleans up the smbus_alert driver a bit.
note: alert_edge_triggered was removed.

And for OF systems core creates the ara device.


--
Regards
Phil Reid