include/linux/fb.h

   1 #ifndef _LINUX_FB_H
   2 #define _LINUX_FB_H
   3
   4 #include <linux/tty.h>
   5 #include <asm/types.h>
   6
   7 /* Definitions of frame buffers                                         */
   8
   9 #define FB_MAJOR                29
  10 #define FB_MAX                  32      /* sufficient for now */
  11
  12 /* ioctls
  13    0x46 is 'F'                                                          */
  14 #define FBIOGET_VSCREENINFO     0x4600
  15 #define FBIOPUT_VSCREENINFO     0x4601
  16 #define FBIOGET_FSCREENINFO     0x4602
  17 #define FBIOGETCMAP             0x4604
  18 #define FBIOPUTCMAP             0x4605
  19 #define FBIOPAN_DISPLAY         0x4606
  20 /* 0x4607-0x460B are defined below */
  21 /* #define FBIOGET_MONITORSPEC  0x460C */
  22 /* #define FBIOPUT_MONITORSPEC  0x460D */
  23 /* #define FBIOSWITCH_MONIBIT   0x460E */
  24 #define FBIOGET_CON2FBMAP       0x460F
  25 #define FBIOPUT_CON2FBMAP       0x4610
  26 #define FBIOBLANK               0x4611          /* arg: 0 or vesa level + 1 */
  27 #define FBIOGET_VBLANK          _IOR('F', 0x12, struct fb_vblank)
  28 #define FBIO_ALLOC              0x4613
  29 #define FBIO_FREE               0x4614
  30 #define FBIOGET_GLYPH           0x4615
  31 #define FBIOGET_HWCINFO         0x4616
  32 #define FBIOPUT_MODEINFO        0x4617
  33 #define FBIOGET_DISPINFO        0x4618
  34
  35
  36 #define FB_TYPE_PACKED_PIXELS           0       /* Packed Pixels        */
  37 #define FB_TYPE_PLANES                  1       /* Non interleaved planes */
  38 #define FB_TYPE_INTERLEAVED_PLANES      2       /* Interleaved planes   */
  39 #define FB_TYPE_TEXT                    3       /* Text/attributes      */
  40 #define FB_TYPE_VGA_PLANES              4       /* EGA/VGA planes       */
  41
  42 #define FB_AUX_TEXT_MDA         0       /* Monochrome text */
  43 #define FB_AUX_TEXT_CGA         1       /* CGA/EGA/VGA Color text */
  44 #define FB_AUX_TEXT_S3_MMIO     2       /* S3 MMIO fasttext */
  45 #define FB_AUX_TEXT_MGA_STEP16  3       /* MGA Millenium I: text, attr, 14 reserved bytes */
  46 #define FB_AUX_TEXT_MGA_STEP8   4       /* other MGAs:      text, attr,  6 reserved bytes */
  47
  48 #define FB_AUX_VGA_PLANES_VGA4          0       /* 16 color planes (EGA/VGA) */
  49 #define FB_AUX_VGA_PLANES_CFB4          1       /* CFB4 in planes (VGA) */
  50 #define FB_AUX_VGA_PLANES_CFB8          2       /* CFB8 in planes (VGA) */
  51
  52 #define FB_VISUAL_MONO01                0       /* Monochr. 1=Black 0=White */
  53 #define FB_VISUAL_MONO10                1       /* Monochr. 1=White 0=Black */
  54 #define FB_VISUAL_TRUECOLOR             2       /* True color   */
  55 #define FB_VISUAL_PSEUDOCOLOR           3       /* Pseudo color (like atari) */
  56 #define FB_VISUAL_DIRECTCOLOR           4       /* Direct color */
  57 #define FB_VISUAL_STATIC_PSEUDOCOLOR    5       /* Pseudo color readonly */
  58
  59 #define FB_ACCEL_NONE           0       /* no hardware accelerator      */
  60 #define FB_ACCEL_ATARIBLITT     1       /* Atari Blitter                */
  61 #define FB_ACCEL_AMIGABLITT     2       /* Amiga Blitter                */
  62 #define FB_ACCEL_S3_TRIO64      3       /* Cybervision64 (S3 Trio64)    */
  63 #define FB_ACCEL_NCR_77C32BLT   4       /* RetinaZ3 (NCR 77C32BLT)      */
  64 #define FB_ACCEL_S3_VIRGE       5       /* Cybervision64/3D (S3 ViRGE)  */
  65 #define FB_ACCEL_ATI_MACH64GX   6       /* ATI Mach 64GX family         */
  66 #define FB_ACCEL_DEC_TGA        7       /* DEC 21030 TGA                */
  67 #define FB_ACCEL_ATI_MACH64CT   8       /* ATI Mach 64CT family         */
  68 #define FB_ACCEL_ATI_MACH64VT   9       /* ATI Mach 64CT family VT class */
  69 #define FB_ACCEL_ATI_MACH64GT   10      /* ATI Mach 64CT family GT class */
  70 #define FB_ACCEL_SUN_CREATOR    11      /* Sun Creator/Creator3D        */
  71 #define FB_ACCEL_SUN_CGSIX      12      /* Sun cg6                      */
  72 #define FB_ACCEL_SUN_LEO        13      /* Sun leo/zx                   */
  73 #define FB_ACCEL_IMS_TWINTURBO  14      /* IMS Twin Turbo               */
  74 #define FB_ACCEL_3DLABS_PERMEDIA2 15    /* 3Dlabs Permedia 2            */
  75 #define FB_ACCEL_MATROX_MGA2064W 16     /* Matrox MGA2064W (Millenium)  */
  76 #define FB_ACCEL_MATROX_MGA1064SG 17    /* Matrox MGA1064SG (Mystique)  */
  77 #define FB_ACCEL_MATROX_MGA2164W 18     /* Matrox MGA2164W (Millenium II) */
  78 #define FB_ACCEL_MATROX_MGA2164W_AGP 19 /* Matrox MGA2164W (Millenium II) */
  79 #define FB_ACCEL_MATROX_MGAG100 20      /* Matrox G100 (Productiva G100) */
  80 #define FB_ACCEL_MATROX_MGAG200 21      /* Matrox G200 (Myst, Mill, ...) */
  81 #define FB_ACCEL_SUN_CG14       22      /* Sun cgfourteen                */
  82 #define FB_ACCEL_SUN_BWTWO      23      /* Sun bwtwo                    */
  83 #define FB_ACCEL_SUN_CGTHREE    24      /* Sun cgthree                  */
  84 #define FB_ACCEL_SUN_TCX        25      /* Sun tcx                      */
  85 #define FB_ACCEL_MATROX_MGAG400 26      /* Matrox G400                  */
  86 #define FB_ACCEL_NV3            27      /* nVidia RIVA 128              */
  87 #define FB_ACCEL_NV4            28      /* nVidia RIVA TNT              */
  88 #define FB_ACCEL_NV5            29      /* nVidia RIVA TNT2             */
  89 #define FB_ACCEL_CT_6555x       30      /* C&T 6555x                    */
  90 #define FB_ACCEL_3DFX_BANSHEE   31      /* 3Dfx Banshee                 */
  91 #define FB_ACCEL_ATI_RAGE128    32      /* ATI Rage128 family           */
  92 #define FB_ACCEL_IGS_CYBER2000  33      /* CyberPro 2000                */
  93 #define FB_ACCEL_IGS_CYBER2010  34      /* CyberPro 2010                */
  94 #define FB_ACCEL_IGS_CYBER5000  35      /* CyberPro 5000                */
  95 #define FB_ACCEL_SIS_GLAMOUR    36      /* SiS 300/630/540              */
  96
  97 struct fb_fix_screeninfo {
  98         char id[16];                    /* identification string eg "TT Builtin" */
  99         unsigned long smem_start;       /* Start of frame buffer mem */
 100                                         /* (physical address) */
 101         __u32 smem_len;                 /* Length of frame buffer mem */
 102         __u32 type;                     /* see FB_TYPE_*                */
 103         __u32 type_aux;                 /* Interleave for interleaved Planes */
 104         __u32 visual;                   /* see FB_VISUAL_*              */
 105         __u16 xpanstep;                 /* zero if no hardware panning  */
 106         __u16 ypanstep;                 /* zero if no hardware panning  */
 107         __u16 ywrapstep;                /* zero if no hardware ywrap    */
 108         __u32 line_length;              /* length of a line in bytes    */
 109         unsigned long mmio_start;       /* Start of Memory Mapped I/O   */
 110                                         /* (physical address) */
 111         __u32 mmio_len;                 /* Length of Memory Mapped I/O  */
 112         __u32 accel;                    /* Type of acceleration available */
 113         __u16 reserved[3];              /* Reserved for future compatibility */
 114 };
 115
 116 /* Interpretation of offset for color fields: All offsets are from the right,
 117  * inside a "pixel" value, which is exactly 'bits_per_pixel' wide (means: you
 118  * can use the offset as right argument to <<). A pixel afterwards is a bit
 119  * stream and is written to video memory as that unmodified. This implies
 120  * big-endian byte order if bits_per_pixel is greater than 8.
 121  */
 122 struct fb_bitfield {
 123         __u32 offset;                   /* beginning of bitfield        */
 124         __u32 length;                   /* length of bitfield           */
 125         __u32 msb_right;                /* != 0 : Most significant bit is */
 126                                         /* right */
 127 };
 128
 129 #define FB_NONSTD_HAM           1       /* Hold-And-Modify (HAM)        */
 130
 131 #define FB_ACTIVATE_NOW         0       /* set values immediately (or vbl)*/
 132 #define FB_ACTIVATE_NXTOPEN     1       /* activate on next open        */
 133 #define FB_ACTIVATE_TEST        2       /* don't set, round up impossible */
 134 #define FB_ACTIVATE_MASK       15
 135                                         /* values                       */
 136 #define FB_ACTIVATE_VBL        16       /* activate values on next vbl  */
 137 #define FB_CHANGE_CMAP_VBL     32       /* change colormap on vbl       */
 138 #define FB_ACTIVATE_ALL        64       /* change all VCs on this fb    */
 139
 140 #define FB_ACCELF_TEXT          1       /* text mode acceleration */
 141
 142 #define FB_SYNC_HOR_HIGH_ACT    1       /* horizontal sync high active  */
 143 #define FB_SYNC_VERT_HIGH_ACT   2       /* vertical sync high active    */
 144 #define FB_SYNC_EXT             4       /* external sync                */
 145 #define FB_SYNC_COMP_HIGH_ACT   8       /* composite sync high active   */
 146 #define FB_SYNC_BROADCAST       16      /* broadcast video timings      */
 147                                         /* vtotal = 144d/288n/576i => PAL  */
 148                                         /* vtotal = 121d/242n/484i => NTSC */
 149 #define FB_SYNC_ON_GREEN        32      /* sync on green */
 150
 151 #define FB_VMODE_NONINTERLACED  0       /* non interlaced */
 152 #define FB_VMODE_INTERLACED     1       /* interlaced   */
 153 #define FB_VMODE_DOUBLE         2       /* double scan */
 154 #define FB_VMODE_MASK           255
 155
 156 #define FB_VMODE_YWRAP          256     /* ywrap instead of panning     */
 157 #define FB_VMODE_SMOOTH_XPAN    512     /* smooth xpan possible (internally used) */
 158 #define FB_VMODE_CONUPDATE      512     /* don't update x/yoffset       */
 159
 160 struct fb_var_screeninfo {
 161         __u32 xres;                     /* visible resolution           */
 162         __u32 yres;
 163         __u32 xres_virtual;             /* virtual resolution           */
 164         __u32 yres_virtual;
 165         __u32 xoffset;                  /* offset from virtual to visible */
 166         __u32 yoffset;                  /* resolution                   */
 167
 168         __u32 bits_per_pixel;           /* guess what                   */
 169         __u32 grayscale;                /* != 0 Graylevels instead of colors */
 170
 171         struct fb_bitfield red;         /* bitfield in fb mem if true color, */
 172         struct fb_bitfield green;       /* else only length is significant */
 173         struct fb_bitfield blue;
 174         struct fb_bitfield transp;      /* transparency                 */
 175
 176         __u32 nonstd;                   /* != 0 Non standard pixel format */
 177
 178         __u32 activate;                 /* see FB_ACTIVATE_*            */
 179
 180         __u32 height;                   /* height of picture in mm    */
 181         __u32 width;                    /* width of picture in mm     */
 182
 183         __u32 accel_flags;              /* acceleration flags (hints)   */
 184
 185         /* Timing: All values in pixclocks, except pixclock (of course) */
 186         __u32 pixclock;                 /* pixel clock in ps (pico seconds) */
 187         __u32 left_margin;              /* time from sync to picture    */
 188         __u32 right_margin;             /* time from picture to sync    */
 189         __u32 upper_margin;             /* time from sync to picture    */
 190         __u32 lower_margin;
 191         __u32 hsync_len;                /* length of horizontal sync    */
 192         __u32 vsync_len;                /* length of vertical sync      */
 193         __u32 sync;                     /* see FB_SYNC_*                */
 194         __u32 vmode;                    /* see FB_VMODE_*               */
 195         __u32 reserved[6];              /* Reserved for future compatibility */
 196 };
 197
 198 struct fb_cmap {
 199         __u32 start;                    /* First entry  */
 200         __u32 len;                      /* Number of entries */
 201         __u16 *red;                     /* Red values   */
 202         __u16 *green;
 203         __u16 *blue;
 204         __u16 *transp;                  /* transparency, can be NULL */
 205 };
 206
 207 struct fb_con2fbmap {
 208         __u32 console;
 209         __u32 framebuffer;
 210 };
 211
 212 /* VESA Blanking Levels */
 213 #define VESA_NO_BLANKING        0
 214 #define VESA_VSYNC_SUSPEND      1
 215 #define VESA_HSYNC_SUSPEND      2
 216 #define VESA_POWERDOWN          3
 217
 218 struct fb_monspecs {
 219         __u32 hfmin;                    /* hfreq lower limit (Hz) */
 220         __u32 hfmax;                    /* hfreq upper limit (Hz) */
 221         __u16 vfmin;                    /* vfreq lower limit (Hz) */
 222         __u16 vfmax;                    /* vfreq upper limit (Hz) */
 223         unsigned dpms : 1;              /* supports DPMS */
 224 };
 225
 226 #define FB_VBLANK_VBLANKING     0x001   /* currently in a vertical blank */
 227 #define FB_VBLANK_HBLANKING     0x002   /* currently in a horizontal blank */
 228 #define FB_VBLANK_HAVE_VBLANK   0x004   /* vertical blanks can be detected */
 229 #define FB_VBLANK_HAVE_HBLANK   0x008   /* horizontal blanks can be detected */
 230 #define FB_VBLANK_HAVE_COUNT    0x010   /* global retrace counter is available */
 231 #define FB_VBLANK_HAVE_VCOUNT   0x020   /* the vcount field is valid */
 232 #define FB_VBLANK_HAVE_HCOUNT   0x040   /* the hcount field is valid */
 233 #define FB_VBLANK_VSYNCING      0x080   /* currently in a vsync */
 234 #define FB_VBLANK_HAVE_VSYNC    0x100   /* verical syncs can be detected */
 235
 236 struct fb_vblank {
 237         __u32 flags;                    /* FB_VBLANK flags */
 238         __u32 count;                    /* counter of retraces since boot */
 239         __u32 vcount;                   /* current scanline position */
 240         __u32 hcount;                   /* current scandot position */
 241         __u32 reserved[4];              /* reserved for future compatibility */
 242 };
 243
 244 #ifdef __KERNEL__
 245
 246 #if 1 /* to go away in 2.5.0 */
 247 extern int GET_FB_IDX(kdev_t rdev);
 248 #else
 249 #define GET_FB_IDX(node)        (MINOR(node))
 250 #endif
 251
 252 #include <linux/fs.h>
 253 #include <linux/init.h>
 254 #include <linux/devfs_fs_kernel.h>
 255
 256
 257 struct fb_info;
 258 struct fb_info_gen;
 259 struct vm_area_struct;
 260 struct file;
 261
 262     /*
 263      *  Frame buffer operations
 264      */
 265
 266 struct fb_ops {
 267     /* open/release and usage marking */
 268     struct module *owner;
 269     int (*fb_open)(struct fb_info *info, int user);
 270     int (*fb_release)(struct fb_info *info, int user);
 271     /* get non settable parameters */
 272     int (*fb_get_fix)(struct fb_fix_screeninfo *fix, int con,
 273                       struct fb_info *info);
 274     /* get settable parameters */
 275     int (*fb_get_var)(struct fb_var_screeninfo *var, int con,
 276                       struct fb_info *info);
 277     /* set settable parameters */
 278     int (*fb_set_var)(struct fb_var_screeninfo *var, int con,
 279                       struct fb_info *info);
 280     /* get colormap */
 281     int (*fb_get_cmap)(struct fb_cmap *cmap, int kspc, int con,
 282                        struct fb_info *info);
 283     /* set colormap */
 284     int (*fb_set_cmap)(struct fb_cmap *cmap, int kspc, int con,
 285                        struct fb_info *info);
 286     /* pan display (optional) */
 287     int (*fb_pan_display)(struct fb_var_screeninfo *var, int con,
 288                           struct fb_info *info);
 289     /* perform fb specific ioctl (optional) */
 290     int (*fb_ioctl)(struct inode *inode, struct file *file, unsigned int cmd,
 291                     unsigned long arg, int con, struct fb_info *info);
 292     /* perform fb specific mmap */
 293     int (*fb_mmap)(struct fb_info *info, struct file *file, struct vm_area_struct *vma);
 294     /* switch to/from raster image mode */
 295     int (*fb_rasterimg)(struct fb_info *info, int start);
 296 };
 297
 298 struct fb_info {
 299    char modename[40];                   /* default video mode */
 300    kdev_t node;
 301    int flags;
 302    int open;                            /* Has this been open already ? */
 303 #define FBINFO_FLAG_MODULE      1       /* Low-level driver is a module */
 304    struct fb_var_screeninfo var;        /* Current var */
 305    struct fb_fix_screeninfo fix;        /* Current fix */
 306    struct fb_monspecs monspecs;         /* Current Monitor specs */
 307    struct fb_cmap cmap;                 /* Current cmap */
 308    struct fb_ops *fbops;
 309    char *screen_base;                   /* Virtual address */
 310    struct display *disp;                /* initial display variable */
 311    struct vc_data *display_fg;          /* Console visible on this display */
 312    char fontname[40];                   /* default font name */
 313    devfs_handle_t devfs_handle;         /* Devfs handle for new name         */
 314    devfs_handle_t devfs_lhandle;        /* Devfs handle for compat. symlink  */
 315    int (*changevar)(int);               /* tell console var has changed */
 316    int (*switch_con)(int, struct fb_info*);
 317                                         /* tell fb to switch consoles */
 318    int (*updatevar)(int, struct fb_info*);
 319                                         /* tell fb to update the vars */
 320    void (*blank)(int, struct fb_info*); /* tell fb to (un)blank the screen */
 321                                         /* arg = 0: unblank */
 322                                         /* arg > 0: VESA level (arg-1) */
 323    void *pseudo_palette;                /* Fake palette of 16 colors and
 324                                            the cursor's color for non
 325                                            palette mode */
 326    /* From here on everything is device dependent */
 327    void *par;
 328 };
 329
 330 #ifdef MODULE
 331 #define FBINFO_FLAG_DEFAULT     FBINFO_FLAG_MODULE
 332 #else
 333 #define FBINFO_FLAG_DEFAULT     0
 334 #endif
 335
 336     /*
 337      *  This structure abstracts from the underlying hardware. It is not
 338      *  mandatory but used by the `generic' frame buffer operations.
 339      *  Read drivers/video/skeletonfb.c for more information.
 340      */
 341
 342 struct fbgen_hwswitch {
 343     void (*detect)(void);
 344     int (*encode_fix)(struct fb_fix_screeninfo *fix, const void *par,
 345                       struct fb_info_gen *info);
 346     int (*decode_var)(const struct fb_var_screeninfo *var, void *par,
 347                       struct fb_info_gen *info);
 348     int (*encode_var)(struct fb_var_screeninfo *var, const void *par,
 349                       struct fb_info_gen *info);
 350     void (*get_par)(void *par, struct fb_info_gen *info);
 351     void (*set_par)(const void *par, struct fb_info_gen *info);
 352     int (*getcolreg)(unsigned regno, unsigned *red, unsigned *green,
 353                      unsigned *blue, unsigned *transp, struct fb_info *info);
 354     int (*setcolreg)(unsigned regno, unsigned red, unsigned green,
 355                      unsigned blue, unsigned transp, struct fb_info *info);
 356     int (*pan_display)(const struct fb_var_screeninfo *var,
 357                        struct fb_info_gen *info);
 358     int (*blank)(int blank_mode, struct fb_info_gen *info);
 359     void (*set_disp)(const void *par, struct display *disp,
 360                      struct fb_info_gen *info);
 361 };
 362
 363 struct fb_info_gen {
 364     struct fb_info info;
 365
 366     /* Entries for a generic frame buffer device */
 367     /* Yes, this starts looking like C++ */
 368     u_int parsize;
 369     struct fbgen_hwswitch *fbhw;
 370
 371    /* From here on everything is device dependent */
 372 };
 373
 374     /*
 375      *  `Generic' versions of the frame buffer device operations
 376      */
 377
 378 extern int fbgen_get_fix(struct fb_fix_screeninfo *fix, int con,
 379                          struct fb_info *info);
 380 extern int fbgen_get_var(struct fb_var_screeninfo *var, int con,
 381                          struct fb_info *info);
 382 extern int fbgen_set_var(struct fb_var_screeninfo *var, int con,
 383                          struct fb_info *info);
 384 extern int fbgen_get_cmap(struct fb_cmap *cmap, int kspc, int con,
 385                           struct fb_info *info);
 386 extern int fbgen_set_cmap(struct fb_cmap *cmap, int kspc, int con,
 387                           struct fb_info *info);
 388 extern int fbgen_pan_display(struct fb_var_screeninfo *var, int con,
 389                              struct fb_info *info);
 390
 391     /*
 392      *  Helper functions
 393      */
 394
 395 extern int fbgen_do_set_var(struct fb_var_screeninfo *var, int isactive,
 396                             struct fb_info_gen *info);
 397 extern void fbgen_set_disp(int con, struct fb_info_gen *info);
 398 extern void fbgen_install_cmap(int con, struct fb_info_gen *info);
 399 extern int fbgen_update_var(int con, struct fb_info *info);
 400 extern int fbgen_switch(int con, struct fb_info *info);
 401 extern void fbgen_blank(int blank, struct fb_info *info);
 402
 403
 404 /* drivers/video/fbmem.c */
 405 extern int register_framebuffer(struct fb_info *fb_info);
 406 extern int unregister_framebuffer(struct fb_info *fb_info);
 407
 408 extern int num_registered_fb;
 409 extern struct fb_info *registered_fb[FB_MAX];
 410
 411 /* drivers/video/fbmon.c */
 412 extern int fbmon_valid_timings(u_int pixclock, u_int htotal, u_int vtotal,
 413                                const struct fb_info *fb_info);
 414 extern int fbmon_dpms(const struct fb_info *fb_info);
 415
 416 /* drivers/video/fbcmap.c */
 417 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
 418 extern void fb_copy_cmap(struct fb_cmap *from, struct fb_cmap *to,
 419                          int fsfromto);
 420 extern int fb_get_cmap(struct fb_cmap *cmap, int kspc,
 421                        int (*getcolreg)(u_int, u_int *, u_int *, u_int *,
 422                                         u_int *, struct fb_info *),
 423                        struct fb_info *fb_info);
 424 extern int fb_set_cmap(struct fb_cmap *cmap, int kspc,
 425                        int (*setcolreg)(u_int, u_int, u_int, u_int, u_int,
 426                                         struct fb_info *),
 427                        struct fb_info *fb_info);
 428 extern struct fb_cmap *fb_default_cmap(int len);
 429 extern void fb_invert_cmaps(void);
 430
 431 struct fb_videomode {
 432     const char *name;   /* optional */
 433     u32 refresh;        /* optional */
 434     u32 xres;
 435     u32 yres;
 436     u32 pixclock;
 437     u32 left_margin;
 438     u32 right_margin;
 439     u32 upper_margin;
 440     u32 lower_margin;
 441     u32 hsync_len;
 442     u32 vsync_len;
 443     u32 sync;
 444     u32 vmode;
 445 };
 446
 447 #ifdef MODULE
 448 static inline int fb_find_mode(struct fb_var_screeninfo *var,
 449                                struct fb_info *info, const char *mode_option,
 450                                const struct fb_videomode *db,
 451                                unsigned int dbsize,
 452                                const struct fb_videomode *default_mode,
 453                                unsigned int default_bpp)
 454 {
 455     extern int __fb_try_mode(struct fb_var_screeninfo *var,
 456                              struct fb_info *info,
 457                              const struct fb_videomode *mode,
 458                              unsigned int bpp);
 459     /*
 460      *  FIXME: How to make the compiler optimize vga640x400 away if
 461      *         default_mode is non-NULL?
 462      */
 463     static const struct fb_videomode vga640x400 = {
 464         /* 640x400 @ 70 Hz, 31.5 kHz hsync */
 465         NULL, 70, 640, 400, 39721, 40, 24, 39, 9, 96, 2,
 466         0, FB_VMODE_NONINTERLACED
 467     };
 468     if (!default_mode)
 469         default_mode = &vga640x400;
 470     if (!default_bpp)
 471         default_bpp = 8;
 472     return __fb_try_mode(var, info, default_mode, default_bpp);
 473 }
 474 #else
 475 extern int __init fb_find_mode(struct fb_var_screeninfo *var,
 476                                struct fb_info *info, const char *mode_option,
 477                                const struct fb_videomode *db,
 478                                unsigned int dbsize,
 479                                const struct fb_videomode *default_mode,
 480                                unsigned int default_bpp);
 481 #endif
 482
 483 #endif /* __KERNEL__ */
 484
 485 #if 1
 486
 487 #define FBCMD_GET_CURRENTPAR    0xDEAD0005
 488 #define FBCMD_SET_CURRENTPAR    0xDEAD8005
 489
 490 #endif
 491
 492
 493 #if 1 /* Preliminary */
 494
 495    /*
 496     *    Hardware Cursor
 497     */
 498
 499 #define FBIOGET_FCURSORINFO     0x4607
 500 #define FBIOGET_VCURSORINFO     0x4608
 501 #define FBIOPUT_VCURSORINFO     0x4609
 502 #define FBIOGET_CURSORSTATE     0x460A
 503 #define FBIOPUT_CURSORSTATE     0x460B
 504
 505
 506 struct fb_fix_cursorinfo {
 507         __u16 crsr_width;               /* width and height of the cursor in */
 508         __u16 crsr_height;              /* pixels (zero if no cursor)   */
 509         __u16 crsr_xsize;               /* cursor size in display pixels */
 510         __u16 crsr_ysize;
 511         __u16 crsr_color1;              /* colormap entry for cursor color1 */
 512         __u16 crsr_color2;              /* colormap entry for cursor color2 */
 513 };
 514
 515 struct fb_var_cursorinfo {
 516         __u16 width;
 517         __u16 height;
 518         __u16 xspot;
 519         __u16 yspot;
 520         __u8 data[1];                   /* field with [height][width]        */
 521 };
 522
 523 struct fb_cursorstate {
 524         __s16 xoffset;
 525         __s16 yoffset;
 526         __u16 mode;
 527 };
 528
 529 #define FB_CURSOR_OFF           0
 530 #define FB_CURSOR_ON            1
 531 #define FB_CURSOR_FLASH         2
 532
 533 #endif /* Preliminary */
 534
 535 #endif /* _LINUX_FB_H */