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fbdev: make offb driver tristate

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Make the offb (Open Firmware frame buffer) driver tristate,
i.e., so that it can be built as a loadable module.

However, it still depends on the setting of DRM_OFDRM
so that both of these drivers cannot be builtin at the same time
nor can one be builtin and the other one a loadable module.

Build-tested successfully with all combination of DRM_OFDRM and FB_OF.

This fixes a build issue that Michal reported when FB_OF=y and
DRM_OFDRM=m:

powerpc64-linux-ld: drivers/video/fbdev/offb.o:(.data.rel.ro+0x58): undefined reference to `cfb_fillrect'
powerpc64-linux-ld: drivers/video/fbdev/offb.o:(.data.rel.ro+0x60): undefined reference to `cfb_copyarea'
powerpc64-linux-ld: drivers/video/fbdev/offb.o:(.data.rel.ro+0x68): undefined reference to `cfb_imageblit'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Michal Suchánek <msuchanek@suse.de>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Randy Dunlap 2022-11-25 16:04:01 -08:00 committed by Helge Deller
parent 1b929c02af
commit 9d8b5376cc
1 changed files with 2 additions and 2 deletions
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4
drivers/video/fbdev/Kconfig
View File

@ -456,8 +456,8 @@ config FB_ATARI
chipset found in Ataris.
config FB_OF
bool "Open Firmware frame buffer device support"
depends on (FB = y) && PPC && (!PPC_PSERIES || PCI)
tristate "Open Firmware frame buffer device support"
depends on FB && PPC && (!PPC_PSERIES || PCI)
depends on !DRM_OFDRM
select APERTURE_HELPERS
select FB_CFB_FILLRECT