Re: [PATCH] v4l: rcar-fcp: Read IP version register at probe time

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Hi Laurent,

On Sat, Jun 8, 2019 at 2:55 PM Laurent Pinchart
<laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> wrote:
> This helps identifying the IP core version, for debugging purpose only
> for now.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>

Thanks for your patch!

> --- a/drivers/media/platform/rcar-fcp.c
> +++ b/drivers/media/platform/rcar-fcp.c

> @@ -138,6 +168,19 @@ static int rcar_fcp_probe(struct platform_device *pdev)
>
>         pm_runtime_enable(&pdev->dev);
>
> +       mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +       fcp->iomem = devm_ioremap_resource(&pdev->dev, mem);

devm_platform_ioremap_resource()?

> +       if (IS_ERR(fcp->iomem))
> +               return PTR_ERR(fcp->iomem);
> +
> +       pm_runtime_get_sync(&pdev->dev);
> +       version = rcar_fcp_read(fcp, FCP_VCR);

Please note that rcar_fcp_read() does not exist in upstream nor next,
and linux-renesas-soc hasn't seen the patch that added it.

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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