linux/drivers/video/fbdev/macmodes.c

/*
 *  linux/drivers/video/macmodes.c -- Standard MacOS video modes
 *
 *	Copyright (C) 1998 Geert Uytterhoeven
 *
 *      2000 - Removal of OpenFirmware dependencies by:
 *      - Ani Joshi
 *      - Brad Douglas <[email protected]>
 *
 *	2001 - Documented with DocBook
 *	- Brad Douglas <[email protected]>
 *
 *  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.
 */

#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/string.h>
#include <linux/module.h>

#include "macmodes.h"

    /*
     *  MacOS video mode definitions
     *
     *  Order IS important! If you change these, don't forget to update
     *  mac_modes[] below!
     */

#define DEFAULT_MODEDB_INDEX …

static const struct fb_videomode mac_modedb[] = …;


    /*
     *  Mapping between MacOS video mode numbers and video mode definitions
     *
     *  These MUST be ordered in
     *    - increasing resolution
     *    - decreasing pixel clock period
     */

static const struct mode_map { … } mac_modes[] = …;


    /*
     *  Mapping between monitor sense values and MacOS video mode numbers
     */

static const struct monitor_map { … } mac_monitors[] = …;

/**
 *	mac_vmode_to_var - converts vmode/cmode pair to var structure
 *	@vmode: MacOS video mode
 *	@cmode: MacOS color mode
 *	@var: frame buffer video mode structure
 *
 *	Converts a MacOS vmode/cmode pair to a frame buffer video
 *	mode structure.
 *
 *	Returns negative errno on error, or zero for success.
 *
 */

int mac_vmode_to_var(int vmode, int cmode, struct fb_var_screeninfo *var)
{ … }
EXPORT_SYMBOL(…);

/**
 *	mac_var_to_vmode - convert var structure to MacOS vmode/cmode pair
 *	@var: frame buffer video mode structure
 *	@vmode: MacOS video mode
 *	@cmode: MacOS color mode
 *
 *	Converts a frame buffer video mode structure to a MacOS
 *	vmode/cmode pair.
 *
 *	Returns negative errno on error, or zero for success.
 *
 */

int mac_var_to_vmode(const struct fb_var_screeninfo *var, int *vmode,
		     int *cmode)
{ … }

/**
 *	mac_map_monitor_sense - Convert monitor sense to vmode
 *	@sense: Macintosh monitor sense number
 *
 *	Converts a Macintosh monitor sense number to a MacOS
 *	vmode number.
 *
 *	Returns MacOS vmode video mode number.
 *
 */

int mac_map_monitor_sense(int sense)
{ … }
EXPORT_SYMBOL(…);

/**
 *	mac_find_mode - find a video mode
 *	@var: frame buffer user defined part of display
 *	@info: frame buffer info structure
 *	@mode_option: video mode name (see mac_modedb[])
 *	@default_bpp: default color depth in bits per pixel
 *
 *	Finds a suitable video mode.  Tries to set mode specified
 *	by @mode_option.  If the name of the wanted mode begins with
 *	'mac', the Mac video mode database will be used, otherwise it
 *	will fall back to the standard video mode database.
 *
 *	Note: Function marked as __init and can only be used during
 *	system boot.
 *
 *	Returns error code from fb_find_mode (see fb_find_mode
 *	function).
 *
 */

int mac_find_mode(struct fb_var_screeninfo *var, struct fb_info *info,
		  const char *mode_option, unsigned int default_bpp)
{ … }
EXPORT_SYMBOL(…);

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;