linux-kernel - Re: [PATCH v3] drm/gma500: depend on framebuffer

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Date:   Fri, 8 Apr 2022 21:33:46 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     James Hilliard <james.hilliard1@...il.com>,
        dri-devel@...ts.freedesktop.org
Cc:     Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] drm/gma500: depend on framebuffer

Hi--

On 4/8/22 21:23, James Hilliard wrote:
> Select the efi framebuffer if efi is enabled.
> 
> This appears to be needed for video output to function correctly.
> 
> Signed-off-by: James Hilliard <james.hilliard1@...il.com>

Acked-by: Randy Dunlap <rdunlap@...radead.org>

> ---
> Changes v2 -> v3:
>   - select EFI_FB instead of depending on it
> Changes v1 -> v2:
>   - use depends instead of select
> ---
>  drivers/gpu/drm/gma500/Kconfig | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/gma500/Kconfig b/drivers/gpu/drm/gma500/Kconfig
> index 0cff20265f97..a422fa84d53b 100644
> --- a/drivers/gpu/drm/gma500/Kconfig
> +++ b/drivers/gpu/drm/gma500/Kconfig
> @@ -2,11 +2,13 @@
>  config DRM_GMA500
>  	tristate "Intel GMA500/600/3600/3650 KMS Framebuffer"
>  	depends on DRM && PCI && X86 && MMU
> +	depends on FB
>  	select DRM_KMS_HELPER
>  	# GMA500 depends on ACPI_VIDEO when ACPI is enabled, just like i915
>  	select ACPI_VIDEO if ACPI
>  	select BACKLIGHT_CLASS_DEVICE if ACPI
>  	select INPUT if ACPI

That "select INPUT" is really bad -- but not your problem.
In the entire kernel tree there are only 3 drivers that select INPUT,
and they are all in drivers/gpu/drm/.

> +	select FB_EFI if EFI
>  	help
>  	  Say yes for an experimental 2D KMS framebuffer driver for the
>  	  Intel GMA500 (Poulsbo), Intel GMA600 (Moorestown/Oak Trail) and

thanks.
-- 
~Randy