Re: [PATCH/RFT v2 1/3] thermal: rcar_thermal: add r8a77995 support

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Hi Kaneko-san,

could you re-spin this series with Geerts concerns (below) addressed.

When you repost I think you can add the tested tags and drop the RFT from
the prefix. I think its likely it can then be merged.

On Tue, Apr 03, 2018 at 08:17:01PM +0900, Yoshihiro Kaneko wrote:
> Hi Geert-san,
> 
> 2018-03-30 18:25 GMT+09:00 Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>:
> > Hi Kaneko-san,
> >
> > On Fri, Mar 30, 2018 at 5:13 AM, Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx> wrote:
> >> Add support for R-Car D3 (r8a77995) thermal sensor.
> >>
> >> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx>
> >
> > Thanks for your patch!
> >
> >> --- a/drivers/thermal/rcar_thermal.c
> >> +++ b/drivers/thermal/rcar_thermal.c
> >> @@ -58,10 +58,35 @@ struct rcar_thermal_common {
> >>         spinlock_t lock;
> >>  };
> >>
> >> +enum rcar_thermal_type {
> >> +       RCAR_THERMAL,
> >> +       RCAR_GEN2_THERMAL,
> >> +       RCAR_GEN3_THERMAL,
> >> +};
> >> +
> >> +struct rcar_thermal_chip {
> >> +       int use_of_thermal;
> >
> > This can be a single bit:
> >
> >     unsigned int use_of_thermal : 1;
> >
> >> +       enum rcar_thermal_type type;
> >
> > If you would add feature bits, you can get rid of rcar_thermal_type:
> >
> >     unsigned int has_filonoff : 1;
> >     unsigned int has_enr : 1;
> >     unsigned int needs_suspend_resume : 1;
> >
> > The number of interrupts can be stored here, too.
> 
> It's nice!
> 
> >
> >> +};
> >> +
> >> +static const struct rcar_thermal_chip rcar_thermal = {
> >> +       .use_of_thermal = 0,
> >> +       .type = RCAR_THERMAL,
> >
> > .has_filonoff = 1,
> > .has_enr = 0,
> > ...
> > .nirqs = 1,
> >
> >> @@ -190,7 +222,8 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
> >>          * enable IRQ
> >>          */
> >>         if (rcar_has_irq_support(priv)) {
> >> -               rcar_thermal_write(priv, FILONOFF, 0);
> >> +               if (priv->chip->type != RCAR_GEN3_THERMAL)
> >
> > if (priv->chip->has_filonoff)
> >
> >> @@ -438,6 +471,9 @@ static int rcar_thermal_probe(struct platform_device *pdev)
> >>         struct rcar_thermal_priv *priv;
> >>         struct device *dev = &pdev->dev;
> >>         struct resource *res, *irq;
> >> +       struct rcar_thermal_chip *chip = ((struct rcar_thermal_chip *)
> >
> > I don't think the cast is needed.
> 
> I will make 'chip' a const variable.
> 
> >
> >> @@ -457,19 +493,35 @@ static int rcar_thermal_probe(struct platform_device *pdev)
> >>         pm_runtime_enable(dev);
> >>         pm_runtime_get_sync(dev);
> >>
> >> -       irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> >> -       if (irq) {
> >> -               /*
> >> -                * platform has IRQ support.
> >> -                * Then, driver uses common registers
> >> -                * rcar_has_irq_support() will be enabled
> >> -                */
> >> -               res = platform_get_resource(pdev, IORESOURCE_MEM, mres++);
> >> -               common->base = devm_ioremap_resource(dev, res);
> >> -               if (IS_ERR(common->base))
> >> -                       return PTR_ERR(common->base);
> >> +       for (i = 0; i < nirq; i++) {
> >
> > for (i = 0; i < priv->nirqs; i++) {
> 
> 
> Best regards,
> Kaneko
> 
> >
> > Gr{oetje,eeting}s,
> >
> >                         Geert
> >
> > --
> > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
> >
> > In personal conversations with technical people, I call myself a hacker. But
> > when I'm talking to journalists I just say "programmer" or something like that.
> >                                 -- Linus Torvalds
> 



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