Re: [RFC 0/4] Intel Integrated Sensor Hub Support (ISH)

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On Fri, 2016-06-10 at 07:45 -0700, Srinivas Pandruvada wrote:
> On Fri, 2016-06-10 at 16:26 +0200, Bastien Nocera wrote:
> > On Fri, 2016-06-10 at 06:55 -0700, Srinivas Pandruvada wrote:
> > > On Fri, 2016-06-10 at 10:44 +0100, Grant Likely wrote:
> > > [...]
> > > > 
> > > > Yes, I do see the in_*_raw_* files in sysfs, and I'm able to
> > > > get
> > > > data
> > > > out of them. Gnome also seems to recognize that the
> > > > accelerometers
> > > > are
> > > > there because it adds a rotation lock button to the system
> > > > menu.
> > > > 
> > > > However, the events are getting through yet. It may be that I'm
> > > > missing something in my kernel config. I'm rebuilding the
> > > > kernel
> > > > with
> > > > Debian's config for the 4.5.5 kernel as a quick sanity test.
> > > > I'll
> > > > report back when I've tried.
> > > > 
> > > You need to add in /usr/lib/system/systemd/iio-sensor-*
> > > 
> > > After=multi-user.target
> > > 
> > > 
> > > This service starts too early.
> > 
> > Nobody has been able to explain to me why that would be a problem.
> > 
> > Can you back this up with some data? Does iio-sensor-proxy exit too
> > early? Does that leave time to the IIO sub-system to do some init
> > work
> > it should already have done?
> The driver's  trigger callback doesn't even get called to take any
> action or provide any data. So to get called need to restart the
> service or do suspend/resume.

Are there any errors when setting the triggers?

The code there is probably a bit naive, but I'd rather fix that rather
than postpone the start of the daemon.

> After=multi-user.target, is not the ideal solution as it is too late.
> So need further debug.
> 
> > 
> > See also https://github.com/hadess/iio-sensor-proxy/issues/82
> > 
> > > > I'll also take some time and review the patch series later this
> > > > afternoon.
> > > 
> > > Atri Bhattacharya reported issues with suspend/resume. With my
> > > test
> > > patches it is fixed for him
> > > 
> > > If you want to hold on, I will repost with fixes for
> > > susend/resume.
> > 
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