/*     *  Frame buffer operations     */struct fb_ops {    /* open/release and usage marking */    struct module *owner;    int (*fb_open)(struct fb_info *info, int user);    int (*fb_release)(struct fb_info *info, int user);    /* get non settable parameters */    int (*fb_get_fix)(struct fb_fix_screeninfo *fix, int con,		      struct fb_info *info);     /* get settable parameters */    int (*fb_get_var)(struct fb_var_screeninfo *var, int con,		      struct fb_info *info);		    /* set settable parameters */    int (*fb_set_var)(struct fb_var_screeninfo *var, int con,		      struct fb_info *info);		    /* get colormap */    int (*fb_get_cmap)(struct fb_cmap *cmap, int kspc, int con,		       struct fb_info *info);    /* set colormap */    int (*fb_set_cmap)(struct fb_cmap *cmap, int kspc, int con,		       struct fb_info *info);    /* pan display (optional) */    int (*fb_pan_display)(struct fb_var_screeninfo *var, int con,			  struct fb_info *info);    /* perform fb specific ioctl (optional) */    int (*fb_ioctl)(struct inode *inode, struct file *file, unsigned int cmd,		    unsigned long arg, int con, struct fb_info *info);    /* perform fb specific mmap */    int (*fb_mmap)(struct fb_info *info, struct file *file, struct vm_area_struct *vma);    /* switch to/from raster image mode */    int (*fb_rasterimg)(struct fb_info *info, int start);};struct fb_info {   char modename[40];			/* default video mode */   kdev_t node;   int flags;   int open;                            /* Has this been open already ? */#define FBINFO_FLAG_MODULE	1	/* Low-level driver is a module */   struct fb_var_screeninfo var;        /* Current var */   struct fb_fix_screeninfo fix;        /* Current fix */   struct fb_monspecs monspecs;         /* Current Monitor specs */   struct fb_cmap cmap;                 /* Current cmap */   struct fb_ops *fbops;   char *screen_base;                   /* Virtual address */   struct display *disp;		/* initial display variable */   struct vc_data *display_fg;		/* Console visible on this display */   char fontname[40];			/* default font name */   devfs_handle_t devfs_handle;         /* Devfs handle for new name         */   devfs_handle_t devfs_lhandle;        /* Devfs handle for compat. symlink  */   int (*changevar)(int);		/* tell console var has changed */   int (*switch_con)(int, struct fb_info*);					/* tell fb to switch consoles */   int (*updatevar)(int, struct fb_info*);					/* tell fb to update the vars */   void (*blank)(int, struct fb_info*);	/* tell fb to (un)blank the screen */					/* arg = 0: unblank */					/* arg > 0: VESA level (arg-1) */   void *pseudo_palette;                /* Fake palette of 16 colors and 					   the cursor's color for non                                           palette mode */   /* From here on everything is device dependent */   void *par;	};#ifdef MODULE#define FBINFO_FLAG_DEFAULT	FBINFO_FLAG_MODULE#else#define FBINFO_FLAG_DEFAULT	0#endif    /*     *  This structure abstracts from the underlying hardware. It is not     *  mandatory but used by the `generic' frame buffer operations.     *  Read drivers/video/skeletonfb.c for more information.     */struct fbgen_hwswitch {    void (*detect)(void);    int (*encode_fix)(struct fb_fix_screeninfo *fix, const void *par,		      struct fb_info_gen *info);    int (*decode_var)(const struct fb_var_screeninfo *var, void *par,		      struct fb_info_gen *info);    int (*encode_var)(struct fb_var_screeninfo *var, const void *par,		      struct fb_info_gen *info);    void (*get_par)(void *par, struct fb_info_gen *info);    void (*set_par)(const void *par, struct fb_info_gen *info);    int (*getcolreg)(unsigned regno, unsigned *red, unsigned *green,		     unsigned *blue, unsigned *transp, struct fb_info *info);    int (*setcolreg)(unsigned regno, unsigned red, unsigned green,		     unsigned blue, unsigned transp, struct fb_info *info);    int (*pan_display)(const struct fb_var_screeninfo *var,		       struct fb_info_gen *info);    int (*blank)(int blank_mode, struct fb_info_gen *info);    void (*set_disp)(const void *par, struct display *disp,		     struct fb_info_gen *info);};struct fb_info_gen {    struct fb_info info;    /* Entries for a generic frame buffer device */    /* Yes, this starts looking like C++ */    u_int parsize;    struct fbgen_hwswitch *fbhw;   /* From here on everything is device dependent */};    /*     *  `Generic' versions of the frame buffer device operations     */extern int fbgen_get_fix(struct fb_fix_screeninfo *fix, int con,			 struct fb_info *info);extern int fbgen_get_var(struct fb_var_screeninfo *var, int con,			 struct fb_info *info);extern int fbgen_set_var(struct fb_var_screeninfo *var, int con,			 struct fb_info *info);extern int fbgen_get_cmap(struct fb_cmap *cmap, int kspc, int con,			  struct fb_info *info);extern int fbgen_set_cmap(struct fb_cmap *cmap, int kspc, int con,			  struct fb_info *info);extern int fbgen_pan_display(struct fb_var_screeninfo *var, int con,			     struct fb_info *info);    /*     *  Helper functions     */extern int fbgen_do_set_var(struct fb_var_screeninfo *var, int isactive,			    struct fb_info_gen *info);extern void fbgen_set_disp(int con, struct fb_info_gen *info);extern void fbgen_install_cmap(int con, struct fb_info_gen *info);extern int fbgen_update_var(int con, struct fb_info *info);extern int fbgen_switch(int con, struct fb_info *info);extern void fbgen_blank(int blank, struct fb_info *info);/* drivers/video/fbmem.c */extern int register_framebuffer(struct fb_info *fb_info);extern int unregister_framebuffer(struct fb_info *fb_info);extern int num_registered_fb;extern struct fb_info *registered_fb[FB_MAX];/* drivers/video/fbmon.c */extern int fbmon_valid_timings(u_int pixclock, u_int htotal, u_int vtotal,			       const struct fb_info *fb_info);extern int fbmon_dpms(const struct fb_info *fb_info);/* drivers/video/fbcmap.c */extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);extern void fb_copy_cmap(struct fb_cmap *from, struct fb_cmap *to,			 int fsfromto);extern int fb_get_cmap(struct fb_cmap *cmap, int kspc,		       int (*getcolreg)(u_int, u_int *, u_int *, u_int *,					u_int *, struct fb_info *),		       struct fb_info *fb_info);extern int fb_set_cmap(struct fb_cmap *cmap, int kspc,		       int (*setcolreg)(u_int, u_int, u_int, u_int, u_int,					struct fb_info *),		       struct fb_info *fb_info);extern struct fb_cmap *fb_default_cmap(int len);extern void fb_invert_cmaps(void);struct fb_videomode {    const char *name;	/* optional */    u32 refresh;	/* optional */    u32 xres;    u32 yres;    u32 pixclock;    u32 left_margin;    u32 right_margin;    u32 upper_margin;    u32 lower_margin;    u32 hsync_len;    u32 vsync_len;    u32 sync;    u32 vmode;};#ifdef MODULEstatic inline int fb_find_mode(struct fb_var_screeninfo *var,			       struct fb_info *info, const char *mode_option,			       const struct fb_videomode *db,			       unsigned int dbsize,			       const struct fb_videomode *default_mode,			       unsigned int default_bpp){    extern int __fb_try_mode(struct fb_var_screeninfo *var,	    		     struct fb_info *info,			     const struct fb_videomode *mode,			     unsigned int bpp);    /*     *  FIXME: How to make the compiler optimize vga640x400 away if     *         default_mode is non-NULL?     */    static const struct fb_videomode vga640x400 = {	/* 640x400 @ 70 Hz, 31.5 kHz hsync */	NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2,	0, FB_VMODE_NONINTERLACED    };    if (!default_mode)	default_mode = &vga640x400;    if (!default_bpp)	default_bpp = 8;    return __fb_try_mode(var, info, default_mode, default_bpp);}#elseextern int __init fb_find_mode(struct fb_var_screeninfo *var,			       struct fb_info *info, const char *mode_option,			       const struct fb_videomode *db,			       unsigned int dbsize,			       const struct fb_videomode *default_mode,			       unsigned int default_bpp);#endif#endif /* __KERNEL__ */#if 1#define FBCMD_GET_CURRENTPAR	0xDEAD0005#define FBCMD_SET_CURRENTPAR	0xDEAD8005#endif#if 1 /* Preliminary */   /*    *    Hardware Cursor    */#define FBIOGET_FCURSORINFO     0x4607#define FBIOGET_VCURSORINFO     0x4608#define FBIOPUT_VCURSORINFO     0x4609#define FBIOGET_CURSORSTATE     0x460A#define FBIOPUT_CURSORSTATE     0x460Bstruct fb_fix_cursorinfo {	__u16 crsr_width;		/* width and height of the cursor in */	__u16 crsr_height;		/* pixels (zero if no cursor)	*/	__u16 crsr_xsize;		/* cursor size in display pixels */	__u16 crsr_ysize;	__u16 crsr_color1;		/* colormap entry for cursor color1 */	__u16 crsr_color2;		/* colormap entry for cursor color2 */};struct fb_var_cursorinfo {	__u16 width;	__u16 height;	__u16 xspot;	__u16 yspot;	__u8 data[1];			/* field with [height][width]        */};struct fb_cursorstate {	__s16 xoffset;	__s16 yoffset;	__u16 mode;};#define FB_CURSOR_OFF		0#define FB_CURSOR_ON		1#define FB_CURSOR_FLASH		2#endif /* Preliminary */#endif /* _LINUX_FB_H */