> > +   ret = ov9740_reg_write(client, OV9740_ISP_CTRL1E, 
> scale_input_x >> 8);
> > +   if (ret)
> > +           goto done;
> > +   ret = ov9740_reg_write(client, OV9740_ISP_CTRL1F, 
> scale_input_x & 0xff);
> > +   if (ret)
> > +           goto done;
> > +   ret = ov9740_reg_write(client, OV9740_ISP_CTRL20, 
> scale_input_y >> 8);
> > +   if (ret)
> > +           goto done;
> > +   ret = ov9740_reg_write(client, OV9740_ISP_CTRL21, 
> scale_input_y & 0xff);
> > +   if (ret)
> > +           goto done;
> 
> Now that we know what control registers 1e to 21 are for, 
> what about renaming 
> them ? Are they called CTRL1E to CTRL21 in the vendor documentation ?

Yes, that's what they're called in the vendor documentation, so I'd rather not 
make something up.--
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