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#ifndef _LINUX_FB_H
#define _LINUX_FB_H

#include <linux/tty.h>
#include <linux/workqueue.h>
#include <asm/types.h>
#include <asm/io.h>

/* Definitions of frame buffers                                         */

#define FB_MAJOR                29
#define FB_MAX                  32      /* sufficient for now */

/* ioctls
   0x46 is 'F'                                                          */

#define FBIOGET_VSCREENINFO     0x4600
#define FBIOPUT_VSCREENINFO     0x4601
#define FBIOGET_FSCREENINFO     0x4602
#define FBIOGETCMAP             0x4604
#define FBIOPUTCMAP             0x4605
#define FBIOPAN_DISPLAY         0x4606
#define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor)
/* 0x4607-0x460B are defined below */
/* #define FBIOGET_MONITORSPEC  0x460C */
/* #define FBIOPUT_MONITORSPEC  0x460D */
/* #define FBIOSWITCH_MONIBIT   0x460E */
#define FBIOGET_CON2FBMAP       0x460F
#define FBIOPUT_CON2FBMAP       0x4610
#define FBIOBLANK               0x4611          /* arg: 0 or vesa level + 1 */
#define FBIOGET_VBLANK          _IOR('F', 0x12, struct fb_vblank)
#define FBIO_ALLOC              0x4613
#define FBIO_FREE               0x4614
#define FBIOGET_GLYPH           0x4615
#define FBIOGET_HWCINFO         0x4616
#define FBIOPUT_MODEINFO        0x4617
#define FBIOGET_DISPINFO        0x4618


#define FB_TYPE_PACKED_PIXELS           0       /* Packed Pixels        */
#define FB_TYPE_PLANES                  1       /* Non interleaved planes */
#define FB_TYPE_INTERLEAVED_PLANES      2       /* Interleaved planes   */
#define FB_TYPE_TEXT                    3       /* Text/attributes      */
#define FB_TYPE_VGA_PLANES              4       /* EGA/VGA planes       */

#define FB_AUX_TEXT_MDA         0       /* Monochrome text */
#define FB_AUX_TEXT_CGA         1       /* CGA/EGA/VGA Color text */
#define FB_AUX_TEXT_S3_MMIO     2       /* S3 MMIO fasttext */
#define FB_AUX_TEXT_MGA_STEP16  3       /* MGA Millenium I: text, attr, 14 reserved bytes */
#define FB_AUX_TEXT_MGA_STEP8   4       /* other MGAs:      text, attr,  6 reserved bytes */

#define FB_AUX_VGA_PLANES_VGA4          0       /* 16 color planes (EGA/VGA) */
#define FB_AUX_VGA_PLANES_CFB4          1       /* CFB4 in planes (VGA) */
#define FB_AUX_VGA_PLANES_CFB8          2       /* CFB8 in planes (VGA) */

#define FB_VISUAL_MONO01                0       /* Monochr. 1=Black 0=White */
#define FB_VISUAL_MONO10                1       /* Monochr. 1=White 0=Black */
#define FB_VISUAL_TRUECOLOR             2       /* True color   */
#define FB_VISUAL_PSEUDOCOLOR           3       /* Pseudo color (like atari) */
#define FB_VISUAL_DIRECTCOLOR           4       /* Direct color */
#define FB_VISUAL_STATIC_PSEUDOCOLOR    5       /* Pseudo color readonly */

#define FB_ACCEL_NONE           0       /* no hardware accelerator      */
#define FB_ACCEL_ATARIBLITT     1       /* Atari Blitter                */
#define FB_ACCEL_AMIGABLITT     2       /* Amiga Blitter                */
#define FB_ACCEL_S3_TRIO64      3       /* Cybervision64 (S3 Trio64)    */
#define FB_ACCEL_NCR_77C32BLT   4       /* RetinaZ3 (NCR 77C32BLT)      */
#define FB_ACCEL_S3_VIRGE       5       /* Cybervision64/3D (S3 ViRGE)  */
#define FB_ACCEL_ATI_MACH64GX   6       /* ATI Mach 64GX family         */
#define FB_ACCEL_DEC_TGA        7       /* DEC 21030 TGA                */
#define FB_ACCEL_ATI_MACH64CT   8       /* ATI Mach 64CT family         */
#define FB_ACCEL_ATI_MACH64VT   9       /* ATI Mach 64CT family VT class */
#define FB_ACCEL_ATI_MACH64GT   10      /* ATI Mach 64CT family GT class */
#define FB_ACCEL_SUN_CREATOR    11      /* Sun Creator/Creator3D        */
#define FB_ACCEL_SUN_CGSIX      12      /* Sun cg6                      */
#define FB_ACCEL_SUN_LEO        13      /* Sun leo/zx                   */
#define FB_ACCEL_IMS_TWINTURBO  14      /* IMS Twin Turbo               */
#define FB_ACCEL_3DLABS_PERMEDIA2 15    /* 3Dlabs Permedia 2            */
#define FB_ACCEL_MATROX_MGA2064W 16     /* Matrox MGA2064W (Millenium)  */
#define FB_ACCEL_MATROX_MGA1064SG 17    /* Matrox MGA1064SG (Mystique)  */
#define FB_ACCEL_MATROX_MGA2164W 18     /* Matrox MGA2164W (Millenium II) */
#define FB_ACCEL_MATROX_MGA2164W_AGP 19 /* Matrox MGA2164W (Millenium II) */
#define FB_ACCEL_MATROX_MGAG100 20      /* Matrox G100 (Productiva G100) */
#define FB_ACCEL_MATROX_MGAG200 21      /* Matrox G200 (Myst, Mill, ...) */
#define FB_ACCEL_SUN_CG14       22      /* Sun cgfourteen                */
#define FB_ACCEL_SUN_BWTWO      23      /* Sun bwtwo                    */
#define FB_ACCEL_SUN_CGTHREE    24      /* Sun cgthree                  */
#define FB_ACCEL_SUN_TCX        25      /* Sun tcx                      */
#define FB_ACCEL_MATROX_MGAG400 26      /* Matrox G400                  */
#define FB_ACCEL_NV3            27      /* nVidia RIVA 128              */
#define FB_ACCEL_NV4            28      /* nVidia RIVA TNT              */
#define FB_ACCEL_NV5            29      /* nVidia RIVA TNT2             */
#define FB_ACCEL_CT_6555x       30      /* C&T 6555x                    */
#define FB_ACCEL_3DFX_BANSHEE   31      /* 3Dfx Banshee                 */
#define FB_ACCEL_ATI_RAGE128    32      /* ATI Rage128 family           */
#define FB_ACCEL_IGS_CYBER2000  33      /* CyberPro 2000                */
#define FB_ACCEL_IGS_CYBER2010  34      /* CyberPro 2010                */
#define FB_ACCEL_IGS_CYBER5000  35      /* CyberPro 5000                */
#define FB_ACCEL_SIS_GLAMOUR    36      /* SiS 300/630/540              */
#define FB_ACCEL_3DLABS_PERMEDIA3 37    /* 3Dlabs Permedia 3            */
#define FB_ACCEL_ATI_RADEON     38      /* ATI Radeon family            */
#define FB_ACCEL_I810           39      /* Intel 810/815                */
#define FB_ACCEL_SIS_GLAMOUR_2  40      /* SiS 315, 650, 740            */
#define FB_ACCEL_SIS_XABRE      41      /* SiS 330 ("Xabre")            */

#define FB_ACCEL_NEOMAGIC_NM2070 90     /* NeoMagic NM2070              */
#define FB_ACCEL_NEOMAGIC_NM2090 91     /* NeoMagic NM2090              */
#define FB_ACCEL_NEOMAGIC_NM2093 92     /* NeoMagic NM2093              */
#define FB_ACCEL_NEOMAGIC_NM2097 93     /* NeoMagic NM2097              */
#define FB_ACCEL_NEOMAGIC_NM2160 94     /* NeoMagic NM2160              */
#define FB_ACCEL_NEOMAGIC_NM2200 95     /* NeoMagic NM2200              */
#define FB_ACCEL_NEOMAGIC_NM2230 96     /* NeoMagic NM2230              */
#define FB_ACCEL_NEOMAGIC_NM2360 97     /* NeoMagic NM2360              */
#define FB_ACCEL_NEOMAGIC_NM2380 98     /* NeoMagic NM2380              */


struct fb_fix_screeninfo {
        char id[16];                    /* identification string eg "TT Builtin" */
        unsigned long smem_start;       /* Start of frame buffer mem */
                                        /* (physical address) */
        __u32 smem_len;                 /* Length of frame buffer mem */
        __u32 type;                     /* see FB_TYPE_*                */
        __u32 type_aux;                 /* Interleave for interleaved Planes */
        __u32 visual;                   /* see FB_VISUAL_*              */
        __u16 xpanstep;                 /* zero if no hardware panning  */
        __u16 ypanstep;                 /* zero if no hardware panning  */
        __u16 ywrapstep;                /* zero if no hardware ywrap    */
        __u32 line_length;              /* length of a line in bytes    */
        unsigned long mmio_start;       /* Start of Memory Mapped I/O   */
                                        /* (physical address) */
        __u32 mmio_len;                 /* Length of Memory Mapped I/O  */
        __u32 accel;                    /* Type of acceleration available */
        __u16 reserved[3];              /* Reserved for future compatibility */
};

/* Interpretation of offset for color fields: All offsets are from the right,
 * inside a "pixel" value, which is exactly 'bits_per_pixel' wide (means: you
 * can use the offset as right argument to <<). A pixel afterwards is a bit
 * stream and is written to video memory as that unmodified. This implies
 * big-endian byte order if bits_per_pixel is greater than 8.
 */

struct fb_bitfield {
        __u32 offset;                   /* beginning of bitfield        */
        __u32 length;                   /* length of bitfield           */
        __u32 msb_right;                /* != 0 : Most significant bit is */
                                        /* right */
};

#define FB_NONSTD_HAM           1       /* Hold-And-Modify (HAM)        */

#define FB_ACTIVATE_NOW         0       /* set values immediately (or vbl)*/
#define FB_ACTIVATE_NXTOPEN     1       /* activate on next open        */
#define FB_ACTIVATE_TEST        2       /* don't set, round up impossible */
#define FB_ACTIVATE_MASK       15
                                        /* values                       */
#define FB_ACTIVATE_VBL        16       /* activate values on next vbl  */
#define FB_CHANGE_CMAP_VBL     32       /* change colormap on vbl       */
#define FB_ACTIVATE_ALL        64       /* change all VCs on this fb    */

#define FB_ACCELF_TEXT          1       /* text mode acceleration */

#define FB_SYNC_HOR_HIGH_ACT    1       /* horizontal sync high active  */
#define FB_SYNC_VERT_HIGH_ACT   2       /* vertical sync high active    */
#define FB_SYNC_EXT             4       /* external sync                */
#define FB_SYNC_COMP_HIGH_ACT   8       /* composite sync high active   */
#define FB_SYNC_BROADCAST       16      /* broadcast video timings      */
                                        /* vtotal = 144d/288n/576i => PAL  */
                                        /* vtotal = 121d/242n/484i => NTSC */
#define FB_SYNC_ON_GREEN        32      /* sync on green */

#define FB_VMODE_NONINTERLACED  0       /* non interlaced */
#define FB_VMODE_INTERLACED     1       /* interlaced   */
#define FB_VMODE_DOUBLE         2       /* double scan */
#define FB_VMODE_MASK           255

#define FB_VMODE_YWRAP          256     /* ywrap instead of panning     */
#define FB_VMODE_SMOOTH_XPAN    512     /* smooth xpan possible (internally used) */
#define FB_VMODE_CONUPDATE      512     /* don't update x/yoffset       */

#define PICOS2KHZ(a) (1000000000UL/(a))
#define KHZ2PICOS(a) (1000000000UL/(a))

struct fb_var_screeninfo {
        __u32 xres;                     /* visible resolution           */
        __u32 yres;
        __u32 xres_virtual;             /* virtual resolution           */
        __u32 yres_virtual;
        __u32 xoffset;                  /* offset from virtual to visible */
        __u32 yoffset;                  /* resolution                   */

        __u32 bits_per_pixel;           /* guess what                   */
        __u32 grayscale;                /* != 0 Graylevels instead of colors */

        struct fb_bitfield red;         /* bitfield in fb mem if true color, */
        struct fb_bitfield green;       /* else only length is significant */
        struct fb_bitfield blue;
        struct fb_bitfield transp;      /* transparency                 */     

        __u32 nonstd;                   /* != 0 Non standard pixel format */

        __u32 activate;                 /* see FB_ACTIVATE_*            */

        __u32 height;                   /* height of picture in mm    */
        __u32 width;                    /* width of picture in mm     */

        __u32 accel_flags;              /* acceleration flags (hints)   */

        /* Timing: All values in pixclocks, except pixclock (of course) */
        __u32 pixclock;                 /* pixel clock in ps (pico seconds) */
        __u32 left_margin;              /* time from sync to picture    */
        __u32 right_margin;             /* time from picture to sync    */
        __u32 upper_margin;             /* time from sync to picture    */
        __u32 lower_margin;
        __u32 hsync_len;                /* length of horizontal sync    */
        __u32 vsync_len;                /* length of vertical sync      */
        __u32 sync;                     /* see FB_SYNC_*                */
        __u32 vmode;                    /* see FB_VMODE_*               */
        __u32 rotate;                   /* angle we rotate counter clockwise */
        __u32 reserved[5];              /* Reserved for future compatibility */
};

struct fb_cmap {
        __u32 start;                    /* First entry  */
        __u32 len;                      /* Number of entries */
        __u16 *red;                     /* Red values   */
        __u16 *green;
        __u16 *blue;
        __u16 *transp;                  /* transparency, can be NULL */
};

struct fb_con2fbmap {
        __u32 console;
        __u32 framebuffer;
};

/* VESA Blanking Levels */
#define VESA_NO_BLANKING        0
#define VESA_VSYNC_SUSPEND      1
#define VESA_HSYNC_SUSPEND      2
#define VESA_POWERDOWN          3

struct fb_monspecs {
        __u32 hfmin;                    /* hfreq lower limit (Hz) */
        __u32 hfmax;                    /* hfreq upper limit (Hz) */
        __u16 vfmin;                    /* vfreq lower limit (Hz) */
        __u16 vfmax;                    /* vfreq upper limit (Hz) */
        __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
        __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
        unsigned gtf  : 1;              /* supports GTF */
        unsigned dpms : 1;              /* supports DPMS */
};

#define FB_VBLANK_VBLANKING     0x001   /* currently in a vertical blank */
#define FB_VBLANK_HBLANKING     0x002   /* currently in a horizontal blank */
#define FB_VBLANK_HAVE_VBLANK   0x004   /* vertical blanks can be detected */
#define FB_VBLANK_HAVE_HBLANK   0x008   /* horizontal blanks can be detected */
#define FB_VBLANK_HAVE_COUNT    0x010   /* global retrace counter is available */
#define FB_VBLANK_HAVE_VCOUNT   0x020   /* the vcount field is valid */
#define FB_VBLANK_HAVE_HCOUNT   0x040   /* the hcount field is valid */
#define FB_VBLANK_VSYNCING      0x080   /* currently in a vsync */
#define FB_VBLANK_HAVE_VSYNC    0x100   /* verical syncs can be detected */

struct fb_vblank {
        __u32 flags;                    /* FB_VBLANK flags */
        __u32 count;                    /* counter of retraces since boot */
        __u32 vcount;                   /* current scanline position */
        __u32 hcount;                   /* current scandot position */
        __u32 reserved[4];              /* reserved for future compatibility */
};

/* Internal HW accel */
#define ROP_COPY 0
#define ROP_XOR  1

struct fb_copyarea {
        __u32 dx;
        __u32 dy;
        __u32 width;
        __u32 height;
        __u32 sx;
        __u32 sy;
};

struct fb_fillrect {
        __u32 dx;       /* screen-relative */
        __u32 dy;
        __u32 width;
        __u32 height;
        __u32 color;
        __u32 rop;
};

struct fb_image {
        __u32 dx;               /* Where to place image */
        __u32 dy;
        __u32 width;            /* Size of image */
        __u32 height;
        __u32 fg_color;         /* Only used when a mono bitmap */
        __u32 bg_color;
        __u8  depth;            /* Depth of the image */
        const char *data;       /* Pointer to image data */
        struct fb_cmap cmap;    /* color map info */
};

/*
 * hardware cursor control
 */


#define FB_CUR_SETCUR   0x01
#define FB_CUR_SETPOS   0x02
#define FB_CUR_SETHOT   0x04
#define FB_CUR_SETCMAP  0x08
#define FB_CUR_SETSHAPE 0x10
#define FB_CUR_SETSIZE  0x20
#define FB_CUR_SETALL   0xFF

struct fbcurpos {
        __u16 x, y;
};

struct fb_cursor {
        __u16 set;              /* what to set */
        __u16 enable;           /* cursor on/off */
        __u16 rop;              /* bitop operation */
        char *mask;             /* cursor mask bits */
        struct fbcurpos hot;    /* cursor hot spot */
        struct fb_image image;  /* Cursor image */
};

#define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
#define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
#define FB_PIXMAP_IO      4     /* memory is iomapped       */
#define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */

struct fb_pixmap {
        __u8  *addr;                      /* pointer to memory             */  
        __u32 size;                       /* size of buffer in bytes       */
        __u32 offset;                     /* current offset to buffer      */
        __u32 buf_align;                  /* byte alignment of each bitmap */
        __u32 scan_align;                 /* alignment per scanline        */
        __u32 flags;                      /* see FB_PIXMAP_*               */
                                          /* access methods                */
        void (*outbuf)(u8 *dst, u8 *addr, unsigned int size);
        u8   (*inbuf) (u8 *addr);
        spinlock_t lock;                  /* spinlock                      */
        atomic_t count;
};
#ifdef __KERNEL__

#include <linux/fs.h>
#include <linux/init.h>

struct fb_info;
struct vm_area_struct;
struct file;

    /*
     *  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);
    /* For framebuffers with strange non linear layouts */     
    ssize_t (*fb_read)(struct file *file, char *buf, size_t count, loff_t *ppos);
    ssize_t (*fb_write)(struct file *file, const char *buf, size_t count, loff_t *ppos);       
    /* checks var and creates a par based on it */
    int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
    /* set the video mode according to par */
    int (*fb_set_par)(struct fb_info *info);
    /* set color register */
    int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
                        unsigned blue, unsigned transp, struct fb_info *info);
    /* blank display */
    int (*fb_blank)(int blank, struct fb_info *info);
    /* pan display */
    int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
    /* draws a rectangle */
    void (*fb_fillrect)(struct fb_info *info, const struct fb_fillrect *rect);
    /* Copy data from area to another */
    void (*fb_copyarea)(struct fb_info *info,const struct fb_copyarea *region);
    /* Draws a image to the display */
    void (*fb_imageblit)(struct fb_info *info, const struct fb_image *image);
    /* Draws cursor */
    int (*fb_cursor)(struct fb_info *info, struct fb_cursor *cursor);
    /* Rotates the display */
    void (*fb_rotate)(struct fb_info *info, int angle);
    /* wait for blit idle, optional */
    int (*fb_sync)(struct fb_info *info);              
    /* perform fb specific ioctl (optional) */
    int (*fb_ioctl)(struct inode *inode, struct file *file, unsigned int cmd,
                    unsigned long arg, struct fb_info *info);
    /* perform fb specific mmap */
    int (*fb_mmap)(struct fb_info *info, struct file *file, struct vm_area_struct *vma);
};

struct fb_info {
   int 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_cursor cursor;             /* Current cursor */   
   struct work_struct queue;            /* Framebuffer event queue */
   struct fb_pixmap pixmap;             /* Current pixmap */
   struct fb_cmap cmap;                 /* Current cmap */
   struct fb_ops *fbops;
   char *screen_base;                   /* Virtual address */
   struct vc_data *display_fg;          /* Console visible on this display */
   int currcon;                         /* Current VC. */      
   void *pseudo_palette;                /* Fake palette of 16 colors */
   /* 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

#if defined(__sparc__)

/* We map all of our framebuffers such that big-endian accesses
 * are what we want, so the following is sufficient.
 */


#define fb_readb sbus_readb
#define fb_readw sbus_readw
#define fb_readl sbus_readl
#define fb_readq sbus_readq
#define fb_writeb sbus_writeb
#define fb_writew sbus_writew
#define fb_writel sbus_writel
#define fb_writeq sbus_writeq
#define fb_memset sbus_memset_io

#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__)

#define fb_readb __raw_readb
#define fb_readw __raw_readw
#define fb_readl __raw_readl
#define fb_readq __raw_readq
#define fb_writeb __raw_writeb
#define fb_writew __raw_writew
#define fb_writel __raw_writel
#define fb_writeq __raw_writeq
#define fb_memset memset_io

#else

#define fb_readb(addr) (*(volatile u8 *) (addr))
#define fb_readw(addr) (*(volatile u16 *) (addr))
#define fb_readl(addr) (*(volatile u32 *) (addr))
#define fb_readq(addr) (*(volatile u64 *) (addr))
#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
#define fb_memset memset

#endif

    /*
     *  `Generic' versions of the frame buffer device operations
     */


extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
extern int fb_blank(struct fb_info *info, int blank);
extern int soft_cursor(struct fb_info *info, struct fb_cursor *cursor);
extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);

/* drivers/video/fbmem.c */
extern int register_framebuffer(struct fb_info *fb_info);
extern int unregister_framebuffer(struct fb_info *fb_info);
extern int fb_prepare_logo(struct fb_info *fb_info);
extern int fb_show_logo(struct fb_info *fb_info);
extern u32 fb_get_buffer_offset(struct fb_info *info, u32 size);
extern void move_buf_unaligned(struct fb_info *info, u8 *dst, u8 *src, u32 d_pitch,
                                u32 height, u32 mask, u32 shift_high, u32 shift_low,
                                u32 mod, u32 idx);
extern void move_buf_aligned(struct fb_info *info, u8 *dst, u8 *src, u32 d_pitch,
                             u32 s_pitch, u32 height);
extern struct fb_info *registered_fb[FB_MAX];
extern int num_registered_fb;

/* drivers/video/fbmon.c */
#define FB_MAXTIMINGS       0
#define FB_VSYNCTIMINGS     1
#define FB_HSYNCTIMINGS     2
#define FB_DCLKTIMINGS      3
#define FB_IGNOREMON    0x100

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);
extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
                       struct fb_info *info);
extern int fb_validate_mode(struct fb_var_screeninfo *var,
                            struct fb_info *info);
extern int parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
extern int fb_get_monitor_limits(unsigned char *edid, struct fb_monspecs *specs);
extern struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize);
extern void fb_destroy_modedb(struct fb_videomode *modedb);
extern void show_edid(unsigned char *edid);

/* drivers/video/modedb.c */
#define VESA_MODEDB_SIZE 34

/* drivers/video/fbcmap.c */
extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
extern void fb_dealloc_cmap(struct fb_cmap *cmap);
extern int fb_copy_cmap(struct fb_cmap *from, struct fb_cmap *to,
                        int fsfromto);
extern int fb_set_cmap(struct fb_cmap *cmap, int kspc, 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;
};

// moved here for gcc4 compatibility
extern const struct fb_videomode vesa_modes[];

#ifdef MODULE
static 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);
}
#else
extern 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__ */

#endif /* _LINUX_FB_H */