linux-kernel - Re: [PATCH v7 3/7] drm: rcar-du: Add support for CMM

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Date:   Thu, 28 Nov 2019 08:56:14 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Jacopo Mondi <jacopo+renesas@...ndi.org>
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Simon Horman <horms@...ge.net.au>,
        Ulrich Hecht <uli+renesas@...nd.eu>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 3/7] drm: rcar-du: Add support for CMM

Hi Jacopo,

On Wed, Nov 13, 2019 at 11:04 AM Jacopo Mondi <jacopo+renesas@...ndi.org> wrote:
> Add a driver for the R-Car Display Unit Color Correction Module.
> In most of Gen3 SoCs, each DU output channel is provided with a CMM unit
> to perform image enhancement and color correction.
>
> Add support for CMM through a driver that supports configuration of
> the 1-dimensional LUT table. More advanced CMM features will be
> implemented on top of this initial one.
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>

> --- a/drivers/gpu/drm/rcar-du/Kconfig
> +++ b/drivers/gpu/drm/rcar-du/Kconfig
> @@ -5,6 +5,7 @@ config DRM_RCAR_DU
>         depends on ARM || ARM64
>         depends on ARCH_RENESAS || COMPILE_TEST
>         imply DRM_RCAR_LVDS
> +       imply DRM_RCAR_CMM
>         select DRM_KMS_HELPER
>         select DRM_KMS_CMA_HELPER
>         select DRM_GEM_CMA_HELPER
> @@ -13,6 +14,13 @@ config DRM_RCAR_DU
>           Choose this option if you have an R-Car chipset.
>           If M is selected the module will be called rcar-du-drm.
>
> +config DRM_RCAR_CMM
> +       tristate "R-Car DU Color Management Module (CMM) Support"
> +       depends on DRM && OF
> +       depends on DRM_RCAR_DU

DRM_RCAR_DU already depends on DRM && OF, so the line above
can be removed.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

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