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

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Message-ID: <b3f7e288-3341-8c6f-1b95-e553ac5ebc35@suse.de>
Date:   Thu, 21 Apr 2022 13:49:11 +0200
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     James Hilliard <james.hilliard1@...il.com>,
        dri-devel@...ts.freedesktop.org
Cc:     David Airlie <airlied@...ux.ie>,
        Randy Dunlap <rdunlap@...radead.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] drm/gma500: depend on framebuffer

Hi

Am 09.04.22 um 06:23 schrieb James Hilliard:
> 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>
> ---
> 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

Why do we need FB here? Framebuffer support should be hidden by DRM's 
fbdev helpers.

Best regards
Thomas

>   	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
> +	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

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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