Re: [PATCH 3/6] media: v4l: cci: Add macros to obtain register width

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On Fri, Nov 10, 2023 at 04:44:46PM +0200, Laurent Pinchart wrote:
> On Fri, Nov 10, 2023 at 11:17:46AM +0000, Sakari Ailus wrote:
> > On Fri, Nov 10, 2023 at 12:14:10PM +0100, Hans de Goede wrote:
> > > On 11/10/23 10:47, Sakari Ailus wrote:
> > > > Add CCI_REG_WIDTH() macro to obtain register width in bits and similarly,
> > > > CCI_REG_WIDTH_BYTES() to obtain it in bytes.
> > > > 
> > > > Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
> > > > ---
> > > >  include/media/v4l2-cci.h | 3 +++
> > > >  1 file changed, 3 insertions(+)
> > > > 
> > > > diff --git a/include/media/v4l2-cci.h b/include/media/v4l2-cci.h
> > > > index b4ce0a46092c..80eaa7fdc606 100644
> > > > --- a/include/media/v4l2-cci.h
> > > > +++ b/include/media/v4l2-cci.h
> > > > @@ -40,6 +40,9 @@ struct cci_reg_sequence {
> > > >  #define CCI_REG_FLAG_PRIVATE_END	31U
> > > >  #define CCI_REG_PRIVATE_MASK		GENMASK(CCI_REG_FLAG_PRIVATE_END, CCI_REG_FLAG_PRIVATE_START)
> > > >  
> > > > +#define CCI_REG_WIDTH_BYTES(x)		(((x) & CCI_REG_WIDTH_MASK) >> CCI_REG_WIDTH_SHIFT)
> > > 
> > > Please use FIELD_GET like v4l2-cci.c does:
> > > 
> > > #define CCI_REG_WIDTH_BYTES(x)		FIELD_GET(CCI_REG_WIDTH_MASK, (x))
> > > 
> > > With that fixed:
> > > 
> > > Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> > > 
> > > As for the patch 4 - 6, those are interesting patches but
> > > I'm afraid I don't have time to review them.
> > 
> > No worries, I mainly included them to have a user for the newly added
> > features.
> > 
> > I'll send v2 with FIELD_GET().
> 
> With FIELD_GET(),
> 
> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

Actually, how about using the new macro in v4l2-cci.c ?

-- 
Regards,

Laurent Pinchart




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