On Sat, Jan 16, 2021 at 05:47:35PM +0000, Jonathan Cameron wrote:
> On Fri, 15 Jan 2021 10:30:49 -0600
> Bjorn Andersson <bjorn.andersson@xxxxxxxxxx> wrote:
>
> > On Wed 13 Jan 09:18 CST 2021, Jonathan Albrieux wrote:
> >
> > > Checking at both msm8909-pm8916.dtsi and msm8916.dtsi from downstream
> > > it is indicated that "batt_id" channel has to be scaled with the default
> > > function:
> > >
> > > chan@31 {
> > > label = "batt_id";
> > > reg = <0x31>;
> > > qcom,decimation = <0>;
> > > qcom,pre-div-channel-scaling = <0>;
> > > qcom,calibration-type = "ratiometric";
> > > qcom,scale-function = <0>;
> > > qcom,hw-settle-time = <0xb>;
> > > qcom,fast-avg-setup = <0>;
> > > };
> > >
> > > Change LR_MUX2_BAT_ID scaling accordingly.
> > >
> >
> > Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> >
> > Not entirely sure, but looking at the history I think this used to work
> > - but it's obvious that no one has read this channel for a while...
> >
> > But I think below is a regression and should be mentioned:
> >
> > Fixes: 7c271eea7b8a ("iio: adc: spmi-vadc: Changes to support different scaling")
> >
>
> Yikes that was a while ago :)
>
> > > Signed-off-by: Jonathan Albrieux <jonathan.albrieux@xxxxxxxxx>
> >
> > Jonathan Cameron, if you merge this through your tree I can take the dts
> > addition through the Qualcomm tree.
>
> Applied to the fixes-togreg branch of iio.git and marked for stable.
>
> I'm not going to rush this one given age of the bug, but if I happen to
> have anything else going it'll make it before the end of this cycle.
>
> Thanks,
>
> Jonathan
>
> >
> > Regards,
> > Bjorn
> >
> > > ---
> > > drivers/iio/adc/qcom-spmi-vadc.c | 2 +-
> > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
> > > index b0388f8a69f4..7e7d408452ec 100644
> > > --- a/drivers/iio/adc/qcom-spmi-vadc.c
> > > +++ b/drivers/iio/adc/qcom-spmi-vadc.c
> > > @@ -598,7 +598,7 @@ static const struct vadc_channels vadc_chans[] = {
> > > VADC_CHAN_NO_SCALE(P_MUX16_1_3, 1)
> > >
> > > VADC_CHAN_NO_SCALE(LR_MUX1_BAT_THERM, 0)
> > > - VADC_CHAN_NO_SCALE(LR_MUX2_BAT_ID, 0)
> > > + VADC_CHAN_VOLT(LR_MUX2_BAT_ID, 0, SCALE_DEFAULT)
> > > VADC_CHAN_NO_SCALE(LR_MUX3_XO_THERM, 0)
> > > VADC_CHAN_NO_SCALE(LR_MUX4_AMUX_THM1, 0)
> > > VADC_CHAN_NO_SCALE(LR_MUX5_AMUX_THM2, 0)
> > > --
> > > 2.17.1
> > >
>
Thank you Bjorn, thank you Jonathan,
Regards,
Jonathan
