Hi Niklas,
On Monday, 16 April 2018 00:26:06 EEST Niklas Söderlund wrote:
> Hi Laurent,
>
> Thanks for your feedback.
>
> I have addressed all your comment's but one for the next version. Please
> indicate if you are fine with this and I can still keep your review tag
>
> :-)
>
> On 2018-04-04 18:15:16 +0300, Laurent Pinchart wrote:
>
> [snip]
>
> > > +static int rcar_csi2_start(struct rcar_csi2 *priv)
> > > +{
> > > + const struct rcar_csi2_format *format;
> > > + u32 phycnt, phypll, vcdt = 0, vcdt2 = 0;
> > > + unsigned int i;
> > > + int ret;
> > > +
> > > + dev_dbg(priv->dev, "Input size (%ux%u%c)\n",
> > > + priv->mf.width, priv->mf.height,
> > > + priv->mf.field == V4L2_FIELD_NONE ? 'p' : 'i');
> > > +
> > > + /* Code is validated in set_fmt */
> > > + format = rcar_csi2_code_to_fmt(priv->mf.code);
> >
> > You could store the format pointer iin the rcar_csi2 structure to avoid
> > looking it up here.
>
> I could do that, but then I would duplicate the storage of the code
> between the two cached values priv->mf and priv-><cached pointer to
> rcar_csi2>. I could find that acceptable but if you don't strongly
> disagree I would prefer to keep the current way of looking it up here
> :-)
I'm OK with that, even if I think that duplicating the code would be a very
small price to pay for not having to look up the format information structure.
> [snip]
>
> > > +static int rcar_csi2_probe_resources(struct rcar_csi2 *priv,
> > > + struct platform_device *pdev)
> > > +{
> > > + struct resource *res;
> > > + int irq;
> > > +
> > > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > > + priv->base = devm_ioremap_resource(&pdev->dev, res);
> > > + if (IS_ERR(priv->base))
> > > + return PTR_ERR(priv->base);
> > > +
> > > + irq = platform_get_irq(pdev, 0);
> > > + if (irq < 0)
> > > + return irq;
> >
> > You don't seem to use the IRQ. Is this meant to catch invalid DT that
> > don't
> > specify an IRQ, to make sure we'll always have one available when we'll
> > need to later ?
>
> Yes, as you deducted this is currently only to catch invalid DT. In the
> DT documentation I list it as a mandatory property. I think there might
> be potential use-case to at some point add interrupt support of for the
> some of the error interrupts which can be enabled, specially now when we
> seen similar patches for VIN floating around.
>
> > > +
> > > + return 0;
> > > +
> > > +error:
> > > + v4l2_async_notifier_unregister(&priv->notifier);
> > > + v4l2_async_notifier_cleanup(&priv->notifier);
> > > +
> > > + return ret;
> > > +}
> >
> > [snip]
> >
> > With these small issues fixed and Kieran's and Maxime's comments addressed
> > as you see fit,
> >
> > Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
>
> Thanks, I will hold of adding it until you indicate if you are OK with
> the one comment I'm not fully agreeing with you on.
--
Regards,
Laurent Pinchart
