Re: [linux-sunxi] [PATCH v6 07/13] drm/sun4i: add a Kconfig option for sun4i-backend

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On Thu, May 4, 2017 at 7:48 PM, Icenowy Zheng <icenowy@xxxxxxx> wrote:
> As sun4i-backend is now a dedicated module, add an Kconfig option for
> it to make it optional, since some build may only use other engines.
>
> Signed-off-by: Icenowy Zheng <icenowy@xxxxxxx>
> ---
> Splited out patch.
>
>  drivers/gpu/drm/sun4i/Kconfig  | 10 ++++++++++
>  drivers/gpu/drm/sun4i/Makefile |  2 +-
>  2 files changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/sun4i/Kconfig b/drivers/gpu/drm/sun4i/Kconfig
> index a4b357db8856..5a8227f37cc4 100644
> --- a/drivers/gpu/drm/sun4i/Kconfig
> +++ b/drivers/gpu/drm/sun4i/Kconfig
> @@ -12,3 +12,13 @@ config DRM_SUN4I
>           Choose this option if you have an Allwinner SoC with a
>           Display Engine. If M is selected the module will be called
>           sun4i-drm.
> +
> +config DRM_SUN4I_BACKEND
> +       tristate "Support for Allwinner A10 Display Engine Backend"
> +       depends on DRM_SUN4I
> +       default DRM_SUN4I
> +       help
> +         Choose this option if you have an Allwinner SoC with the
> +         original Allwinner Display Engine, which has a backend to
> +         do some alpha blending and feed graphics to TCON. If M is
> +         selected the module will be called sun4i-backend.
> diff --git a/drivers/gpu/drm/sun4i/Makefile b/drivers/gpu/drm/sun4i/Makefile
> index a251fb36c951..a08df56759e3 100644
> --- a/drivers/gpu/drm/sun4i/Makefile
> +++ b/drivers/gpu/drm/sun4i/Makefile
> @@ -9,6 +9,6 @@ sun4i-tcon-y += sun4i_crtc.o
>  sun4i-backend-y += sun4i_backend.o sun4i_layer.o
>
>  obj-$(CONFIG_DRM_SUN4I)                += sun4i-drm.o sun4i-tcon.o
> -obj-$(CONFIG_DRM_SUN4I)                += sun4i-backend.o
> +obj-$(CONFIG_DRM_SUN4I_BACKEND)                += sun4i-backend.o
>  obj-$(CONFIG_DRM_SUN4I)                += sun6i_drc.o
>  obj-$(CONFIG_DRM_SUN4I)                += sun4i_tv.o

Can you move sun4i-backend to the bottom in a separate section? The idea
is to have a bunch of core or common stuff, then platform specific modules.

Thanks
ChenYu
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