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@xxxxxxxxxxxxx>
Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Cc: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Michal Suchánek <msuchanek@xxxxxxx>
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: linux-fbdev@xxxxxxxxxxxxxxx
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
drivers/video/fbdev/Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -- a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -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
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