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drm: Move nomodeset kernel parameter to the DRM subsystem

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The "nomodeset" kernel cmdline parameter is handled by the vgacon driver
but the exported vgacon_text_force() symbol is only used by DRM drivers.

It makes much more sense for the parameter logic to be in the subsystem
of the drivers that are making use of it.

Let's move the vgacon_text_force() function and related logic to the DRM
subsystem. While doing that, rename it to drm_firmware_drivers_only() and
make it return true if "nomodeset" was used and false otherwise. This is
a better description of the condition that the drivers are testing for.

Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211112133230.1595307-4-javierm@redhat.com
This commit is contained in:
Javier Martinez Canillas
2021-11-12 14:32:27 +01:00
parent d76f25d66e
commit 6a2d2ddf2c
17 changed files with 48 additions and 51 deletions
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5
include/drm/drm_drv.h
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@@ -601,5 +601,10 @@ static inline bool drm_drv_uses_atomic_modeset(struct drm_device *dev)
int drm_dev_set_unique(struct drm_device *dev, const char *name);
#ifdef CONFIG_VGA_CONSOLE
extern bool drm_firmware_drivers_only(void);
#else
static inline bool drm_firmware_drivers_only(void) { return false; }
#endif
#endif