diff options
| author | Javier Martinez Canillas <javierm@redhat.com> | 2023-07-19 10:15:37 +0200 |
|---|---|---|
| committer | Javier Martinez Canillas <javierm@redhat.com> | 2023-07-22 12:25:04 +0200 |
| commit | 55bffc8170bb5813c51a44b1f4a818ade675fe1f (patch) | |
| tree | dd3dfde9a25d97bccd294d1e4dfe1f51ce10315f /drivers/video/backlight | |
| parent | df7915246e798b9ef8326df97b448efba3e9cd43 (diff) | |
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/backlight')
| -rw-r--r-- | drivers/video/backlight/backlight.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index 9a885d398c22..86e1cdc8e369 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -79,8 +79,8 @@ static const char *const backlight_scale_types[] = { [BACKLIGHT_SCALE_NON_LINEAR] = "non-linear", }; -#if defined(CONFIG_FB) || (defined(CONFIG_FB_MODULE) && \ - defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)) +#if defined(CONFIG_FB_CORE) || (defined(CONFIG_FB_CORE_MODULE) && \ + defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE)) /* * fb_notifier_callback * @@ -155,7 +155,7 @@ static inline int backlight_register_fb(struct backlight_device *bd) static inline void backlight_unregister_fb(struct backlight_device *bd) { } -#endif /* CONFIG_FB */ +#endif /* CONFIG_FB_CORE */ static void backlight_generate_event(struct backlight_device *bd, enum backlight_update_reason reason) |