linux/include/video/cmdline.h
Thomas Zimmermann 93604a5ade fbdev: Handle video= parameter in video/cmdline.c
Handle the command-line parameter video= in video/cmdline.c. Implement
the fbdev helper fb_get_options() on top. Will allows to handle the
kernel parameter in DRM without fbdev dependencies.

Note that __video_get_options() has the meaning of its return value
inverted compared to fb_get_options(). The new helper returns true if
the adapter has been enabled, and false otherwise.

There is the ofonly parameter, which disables output for non-OF-based
framebuffers. It is only for offb and looks like a workaround. The actual
purpose it not clear to me. Use 'video=off' or 'nomodeset' instead.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230209135509.7786-9-tzimmermann@suse.de
2023-02-20 14:56:48 +01:00

21 lines
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C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef VIDEO_CMDLINE_H
#define VIDEO_CMDLINE_H
#include <linux/types.h>
#if defined(CONFIG_VIDEO_CMDLINE)
const char *video_get_options(const char *name);
/* exported for compatibility with fbdev; don't use in new code */
bool __video_get_options(const char *name, const char **option, bool is_of);
#else
static inline const char *video_get_options(const char *name)
{
return NULL;
}
#endif
#endif