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Date:   Sat, 29 Aug 2020 16:41:25 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Christian Eggers <ceggers@...i.de>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio <linux-iio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] iio: light: as73211: Fix AS73211_CREG1_GAIN_1

On Wed, 26 Aug 2020 19:11:37 +0300
Andy Shevchenko <andy.shevchenko@...il.com> wrote:

> On Wed, Aug 26, 2020 at 12:55 PM Christian Eggers <ceggers@...i.de> wrote:
> >
> > Wrong value was introduced during review process.  
> 
> Ooops, long reviews have their outcomes...
> 
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

Thanks.  Add I hadn't pushed this out yet in a non rebasing branch
I have folded it into the original patch.

thanks,

Jonathan

> 
> > Signed-off-by: Christian Eggers <ceggers@...i.de>
> > ---
> > Patch against jic23/iio.git, branch testing
> >
> >  drivers/iio/light/as73211.c | 6 +++---
> >  1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/iio/light/as73211.c b/drivers/iio/light/as73211.c
> > index 3383aaacbf52..e76747b99b92 100644
> > --- a/drivers/iio/light/as73211.c
> > +++ b/drivers/iio/light/as73211.c
> > @@ -56,7 +56,7 @@
> >  #define AS73211_AGEN_MUT(x)       FIELD_PREP(AS73211_AGEN_MUT_MASK, (x))
> >
> >  #define AS73211_CREG1_GAIN_MASK   GENMASK(7, 4)
> > -#define AS73211_CREG1_GAIN_1      13
> > +#define AS73211_CREG1_GAIN_1      11
> >  #define AS73211_CREG1_TIME_MASK   GENMASK(3, 0)
> >
> >  #define AS73211_CREG3_CCLK_MASK   GENMASK(1, 0)
> > @@ -217,7 +217,7 @@ static void as73211_integration_time_calc_avail(struct as73211_data *data)
> >
> >  static unsigned int as73211_gain(struct as73211_data *data)
> >  {
> > -       /* gain can be calculated from CREG1 as 2^(13 - CREG1_GAIN) */
> > +       /* gain can be calculated from CREG1 as 2^(11 - CREG1_GAIN) */
> >         return BIT(AS73211_CREG1_GAIN_1 - FIELD_GET(AS73211_CREG1_GAIN_MASK, data->creg1));
> >  }
> >
> > @@ -473,7 +473,7 @@ static int _as73211_write_raw(struct iio_dev *indio_dev,
> >                 if (val < 0 || !is_power_of_2(val) || val2)
> >                         return -EINVAL;
> >
> > -               /* gain can be calculated from CREG1 as 2^(13 - CREG1_GAIN) */
> > +               /* gain can be calculated from CREG1 as 2^(11 - CREG1_GAIN) */
> >                 reg_bits = AS73211_CREG1_GAIN_1 - ilog2(val);
> >                 if (!FIELD_FIT(AS73211_CREG1_GAIN_MASK, reg_bits))
> >                         return -EINVAL;
> > --
> > Christian Eggers
> > Embedded software developer
> >
> > Arnold & Richter Cine Technik GmbH & Co. Betriebs KG
> > Sitz: Muenchen - Registergericht: Amtsgericht Muenchen - Handelsregisternummer: HRA 57918
> > Persoenlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH
> > Sitz: Muenchen - Registergericht: Amtsgericht Muenchen - Handelsregisternummer: HRB 54477
> > Geschaeftsfuehrer: Dr. Michael Neuhaeuser; Stephan Schenk; Walter Trauninger; Markus Zeiler
> >  
> 
> 

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