RE: [PATCH v4] iio: adc: Add TI ADS1015 ADC driver support

[Sricharan]

Hi,

> On Wed, Feb 10, 2016 at 10:36:22AM -0600, Michael Welling wrote:
> > On Wed, Feb 10, 2016 at 08:39:04PM +0530, Sricharan wrote:
> > > > Hi Sricharan,
> > > >
> > > > Are you looking at pca9685_pwm_probe in drivers/pwm/pwm-
> pca9685.c
> > > > right?
> > > >
> > >  Yes.
> > >
> > > > I'm asking this because this driver doesn't seem to support
> > > > runtime pm and there is no check for regmap_write/regmap_write
> > > > return code in the probe function.
> > >    Hmm to be clear, so itâs the pm_runtime_getsync from i2c-qup which
> fails right ?
> > >    I was tracking that when there are i2c_xfers from pwm. I did not see
> any failures there.
> > >    So wanted to know the correct sequence to reproduce.
> > >
> >
> > The problem was discovered using the patch that this thread is on. The
> > PWM driver does not have the problem.
> >
> > When the driver in this patch called pm_runtime_get_sync you got -EINVAL
> back.
> 
> I noticed some patches for the QUP I2C driver in linux-next so I built against
> it.
> 
> The ADC driver now appears to work as desired.
> 
   Ok, I suppose those were changes merged last week to add qup V2 tags support, but
   not sure how that is helping to solve the pm_runtime issue here. 

Regards,
  Sricharan