/*
* linux / drivers / video / fb_cmdline . c
*
* Copyright ( C ) 2014 Intel Corp
* Copyright ( C ) 1994 Martin Schaller
*
* 2001 - Documented with DocBook
* - Brad Douglas < brad @ neruo . com >
*
* This file is subject to the terms and conditions of the GNU General Public
* License . See the file COPYING in the main directory of this archive
* for more details .
*
* Authors :
* Daniel Vetter < daniel . vetter @ ffwll . ch >
*/
#include <linux/export.h>
#include <linux/fb.h>
#include <linux/string.h>
#include <video/cmdline.h>
/**
* fb_get_options - get kernel boot parameters
* @ name : framebuffer name as it would appear in
* the boot parameter line
* ( video = < name > : < options > )
* @ option : the option will be stored here
*
* The caller owns the string returned in @ option and is
* responsible for releasing the memory .
*
* NOTE : Needed to maintain backwards compatibility
*/
int fb_get_options(const char *name, char **option)
{
const char *options = NULL;
bool is_of = false ;
bool enabled;
if (name)
is_of = !strncmp(name, "offb" , 4 );
enabled = __video_get_options(name, &options, is_of);
if (options) {
if (!strncmp(options, "off" , 3 ))
enabled = false ;
}
if (option) {
if (options)
*option = kstrdup(options, GFP_KERNEL);
else
*option = NULL;
}
return enabled ? 0 : 1 ; // 0 on success, 1 otherwise
}
EXPORT_SYMBOL(fb_get_options);
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