diff options
author | Javier Martinez Canillas <javierm@redhat.com> | 2023-07-19 11:15:37 +0300 |
---|---|---|
committer | Javier Martinez Canillas <javierm@redhat.com> | 2023-07-22 13:25:04 +0300 |
commit | 55bffc8170bb5813c51a44b1f4a818ade675fe1f (patch) | |
tree | dd3dfde9a25d97bccd294d1e4dfe1f51ce10315f /drivers/video/fbdev/core/Kconfig | |
parent | df7915246e798b9ef8326df97b448efba3e9cd43 (diff) | |
download | linux-55bffc8170bb5813c51a44b1f4a818ade675fe1f.tar.xz |
fbdev: Split frame buffer support in FB and FB_CORE symbols
Currently the CONFIG_FB option has to be enabled even if no legacy fbdev
drivers are needed (e.g: only to have support for framebuffer consoles).
The DRM subsystem has a fbdev emulation layer, but depends on CONFIG_FB
and so it can only be enabled if that dependency is enabled as well.
That means fbdev drivers have to be explicitly disabled if users want to
enable CONFIG_FB, only to use fbcon and/or the DRM fbdev emulation layer.
This patch introduces a non-visible CONFIG_FB_CORE symbol that could be
enabled just to have core support needed for CONFIG_DRM_FBDEV_EMULATION,
allowing CONFIG_FB to be disabled (and automatically disabling all the
fbdev drivers).
Nothing from fb_backlight.o and fbmon.o is used by the DRM fbdev emulation
layer so these two objects can be compiled out when CONFIG_FB is disabled.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719081544.741051-4-javierm@redhat.com
Diffstat (limited to 'drivers/video/fbdev/core/Kconfig')
-rw-r--r-- | drivers/video/fbdev/core/Kconfig | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/drivers/video/fbdev/core/Kconfig b/drivers/video/fbdev/core/Kconfig index fd3b7f5b4b7a..528e4dd2199c 100644 --- a/drivers/video/fbdev/core/Kconfig +++ b/drivers/video/fbdev/core/Kconfig @@ -3,6 +3,10 @@ # fbdev core configuration # +config FB_CORE + select VIDEO_CMDLINE + tristate + config FB_NOTIFY bool @@ -23,7 +27,7 @@ config FIRMWARE_EDID config FB_DEVICE bool "Provide legacy /dev/fb* device" - depends on FB + depends on FB_CORE default y help Say Y here if you want the legacy /dev/fb* device file and @@ -39,7 +43,7 @@ config FB_DDC config FB_CFB_FILLRECT tristate - depends on FB + depends on FB_CORE help Include the cfb_fillrect function for generic software rectangle filling. This is used by drivers that don't provide their own @@ -47,7 +51,7 @@ config FB_CFB_FILLRECT config FB_CFB_COPYAREA tristate - depends on FB + depends on FB_CORE help Include the cfb_copyarea function for generic software area copying. This is used by drivers that don't provide their own (accelerated) @@ -55,7 +59,7 @@ config FB_CFB_COPYAREA config FB_CFB_IMAGEBLIT tristate - depends on FB + depends on FB_CORE help Include the cfb_imageblit function for generic software image blitting. This is used by drivers that don't provide their own @@ -63,7 +67,7 @@ config FB_CFB_IMAGEBLIT config FB_CFB_REV_PIXELS_IN_BYTE bool - depends on FB + depends on FB_CORE help Allow generic frame-buffer functions to work on displays with 1, 2 and 4 bits per pixel depths which has opposite order of pixels in @@ -71,7 +75,7 @@ config FB_CFB_REV_PIXELS_IN_BYTE config FB_SYS_FILLRECT tristate - depends on FB + depends on FB_CORE help Include the sys_fillrect function for generic software rectangle filling. This is used by drivers that don't provide their own @@ -79,7 +83,7 @@ config FB_SYS_FILLRECT config FB_SYS_COPYAREA tristate - depends on FB + depends on FB_CORE help Include the sys_copyarea function for generic software area copying. This is used by drivers that don't provide their own (accelerated) @@ -87,7 +91,7 @@ config FB_SYS_COPYAREA config FB_SYS_IMAGEBLIT tristate - depends on FB + depends on FB_CORE help Include the sys_imageblit function for generic software image blitting. This is used by drivers that don't provide their own @@ -126,22 +130,22 @@ endchoice config FB_SYS_FOPS tristate - depends on FB + depends on FB_CORE config FB_DEFERRED_IO bool - depends on FB + depends on FB_CORE config FB_IO_HELPERS bool - depends on FB + depends on FB_CORE select FB_CFB_COPYAREA select FB_CFB_FILLRECT select FB_CFB_IMAGEBLIT config FB_SYS_HELPERS bool - depends on FB + depends on FB_CORE select FB_SYS_COPYAREA select FB_SYS_FILLRECT select FB_SYS_FOPS @@ -149,7 +153,7 @@ config FB_SYS_HELPERS config FB_SYS_HELPERS_DEFERRED bool - depends on FB + depends on FB_CORE select FB_DEFERRED_IO select FB_SYS_HELPERS |