include/linux/fb.h

   1 #ifndef _LINUX_FB_H
   2 #define _LINUX_FB_H
   3
   4 #include <linux/types.h>
   5 #include <linux/i2c.h>
   6
   7 struct dentry;
   8
   9 /* Definitions of frame buffers                                         */
  10
  11 #define FB_MAX                  32      /* sufficient for now */
  12
  13 /* ioctls
  14    0x46 is 'F'                                                          */
  15 #define FBIOGET_VSCREENINFO     0x4600
  16 #define FBIOPUT_VSCREENINFO     0x4601
  17 #define FBIOGET_FSCREENINFO     0x4602
  18 #define FBIOGETCMAP             0x4604
  19 #define FBIOPUTCMAP             0x4605
  20 #define FBIOPAN_DISPLAY         0x4606
  21 #ifdef __KERNEL__
  22 #define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor_user)
  23 #else
  24 #define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor)
  25 #endif
  26 /* 0x4607-0x460B are defined below */
  27 /* #define FBIOGET_MONITORSPEC  0x460C */
  28 /* #define FBIOPUT_MONITORSPEC  0x460D */
  29 /* #define FBIOSWITCH_MONIBIT   0x460E */
  30 #define FBIOGET_CON2FBMAP       0x460F
  31 #define FBIOPUT_CON2FBMAP       0x4610
  32 #define FBIOBLANK               0x4611          /* arg: 0 or vesa level + 1 */
  33 #define FBIOGET_VBLANK          _IOR('F', 0x12, struct fb_vblank)
  34 #define FBIO_ALLOC              0x4613
  35 #define FBIO_FREE               0x4614
  36 #define FBIOGET_GLYPH           0x4615
  37 #define FBIOGET_HWCINFO         0x4616
  38 #define FBIOPUT_MODEINFO        0x4617
  39 #define FBIOGET_DISPINFO        0x4618
  40
  41
  42 #define FB_TYPE_PACKED_PIXELS           0       /* Packed Pixels        */
  43 #define FB_TYPE_PLANES                  1       /* Non interleaved planes */
  44 #define FB_TYPE_INTERLEAVED_PLANES      2       /* Interleaved planes   */
  45 #define FB_TYPE_TEXT                    3       /* Text/attributes      */
  46 #define FB_TYPE_VGA_PLANES              4       /* EGA/VGA planes       */
  47
  48 #define FB_AUX_TEXT_MDA         0       /* Monochrome text */
  49 #define FB_AUX_TEXT_CGA         1       /* CGA/EGA/VGA Color text */
  50 #define FB_AUX_TEXT_S3_MMIO     2       /* S3 MMIO fasttext */
  51 #define FB_AUX_TEXT_MGA_STEP16  3       /* MGA Millenium I: text, attr, 14 reserved bytes */
  52 #define FB_AUX_TEXT_MGA_STEP8   4       /* other MGAs:      text, attr,  6 reserved bytes */
  53 #define FB_AUX_TEXT_SVGA_GROUP  8       /* 8-15: SVGA tileblit compatible modes */
  54 #define FB_AUX_TEXT_SVGA_MASK   7       /* lower three bits says step */
  55 #define FB_AUX_TEXT_SVGA_STEP2  8       /* SVGA text mode:  text, attr */
  56 #define FB_AUX_TEXT_SVGA_STEP4  9       /* SVGA text mode:  text, attr,  2 reserved bytes */
  57 #define FB_AUX_TEXT_SVGA_STEP8  10      /* SVGA text mode:  text, attr,  6 reserved bytes */
  58 #define FB_AUX_TEXT_SVGA_STEP16 11      /* SVGA text mode:  text, attr, 14 reserved bytes */
  59 #define FB_AUX_TEXT_SVGA_LAST   15      /* reserved up to 15 */
  60
  61 #define FB_AUX_VGA_PLANES_VGA4          0       /* 16 color planes (EGA/VGA) */
  62 #define FB_AUX_VGA_PLANES_CFB4          1       /* CFB4 in planes (VGA) */
  63 #define FB_AUX_VGA_PLANES_CFB8          2       /* CFB8 in planes (VGA) */
  64
  65 #define FB_VISUAL_MONO01                0       /* Monochr. 1=Black 0=White */
  66 #define FB_VISUAL_MONO10                1       /* Monochr. 1=White 0=Black */
  67 #define FB_VISUAL_TRUECOLOR             2       /* True color   */
  68 #define FB_VISUAL_PSEUDOCOLOR           3       /* Pseudo color (like atari) */
  69 #define FB_VISUAL_DIRECTCOLOR           4       /* Direct color */
  70 #define FB_VISUAL_STATIC_PSEUDOCOLOR    5       /* Pseudo color readonly */
  71
  72 #define FB_ACCEL_NONE           0       /* no hardware accelerator      */
  73 #define FB_ACCEL_ATARIBLITT     1       /* Atari Blitter                */
  74 #define FB_ACCEL_AMIGABLITT     2       /* Amiga Blitter                */
  75 #define FB_ACCEL_S3_TRIO64      3       /* Cybervision64 (S3 Trio64)    */
  76 #define FB_ACCEL_NCR_77C32BLT   4       /* RetinaZ3 (NCR 77C32BLT)      */
  77 #define FB_ACCEL_S3_VIRGE       5       /* Cybervision64/3D (S3 ViRGE)  */
  78 #define FB_ACCEL_ATI_MACH64GX   6       /* ATI Mach 64GX family         */
  79 #define FB_ACCEL_DEC_TGA        7       /* DEC 21030 TGA                */
  80 #define FB_ACCEL_ATI_MACH64CT   8       /* ATI Mach 64CT family         */
  81 #define FB_ACCEL_ATI_MACH64VT   9       /* ATI Mach 64CT family VT class */
  82 #define FB_ACCEL_ATI_MACH64GT   10      /* ATI Mach 64CT family GT class */
  83 #define FB_ACCEL_SUN_CREATOR    11      /* Sun Creator/Creator3D        */
  84 #define FB_ACCEL_SUN_CGSIX      12      /* Sun cg6                      */
  85 #define FB_ACCEL_SUN_LEO        13      /* Sun leo/zx                   */
  86 #define FB_ACCEL_IMS_TWINTURBO  14      /* IMS Twin Turbo               */
  87 #define FB_ACCEL_3DLABS_PERMEDIA2 15    /* 3Dlabs Permedia 2            */
  88 #define FB_ACCEL_MATROX_MGA2064W 16     /* Matrox MGA2064W (Millenium)  */
  89 #define FB_ACCEL_MATROX_MGA1064SG 17    /* Matrox MGA1064SG (Mystique)  */
  90 #define FB_ACCEL_MATROX_MGA2164W 18     /* Matrox MGA2164W (Millenium II) */
  91 #define FB_ACCEL_MATROX_MGA2164W_AGP 19 /* Matrox MGA2164W (Millenium II) */
  92 #define FB_ACCEL_MATROX_MGAG100 20      /* Matrox G100 (Productiva G100) */
  93 #define FB_ACCEL_MATROX_MGAG200 21      /* Matrox G200 (Myst, Mill, ...) */
  94 #define FB_ACCEL_SUN_CG14       22      /* Sun cgfourteen                */
  95 #define FB_ACCEL_SUN_BWTWO      23      /* Sun bwtwo                    */
  96 #define FB_ACCEL_SUN_CGTHREE    24      /* Sun cgthree                  */
  97 #define FB_ACCEL_SUN_TCX        25      /* Sun tcx                      */
  98 #define FB_ACCEL_MATROX_MGAG400 26      /* Matrox G400                  */
  99 #define FB_ACCEL_NV3            27      /* nVidia RIVA 128              */
 100 #define FB_ACCEL_NV4            28      /* nVidia RIVA TNT              */
 101 #define FB_ACCEL_NV5            29      /* nVidia RIVA TNT2             */
 102 #define FB_ACCEL_CT_6555x       30      /* C&T 6555x                    */
 103 #define FB_ACCEL_3DFX_BANSHEE   31      /* 3Dfx Banshee                 */
 104 #define FB_ACCEL_ATI_RAGE128    32      /* ATI Rage128 family           */
 105 #define FB_ACCEL_IGS_CYBER2000  33      /* CyberPro 2000                */
 106 #define FB_ACCEL_IGS_CYBER2010  34      /* CyberPro 2010                */
 107 #define FB_ACCEL_IGS_CYBER5000  35      /* CyberPro 5000                */
 108 #define FB_ACCEL_SIS_GLAMOUR    36      /* SiS 300/630/540              */
 109 #define FB_ACCEL_3DLABS_PERMEDIA3 37    /* 3Dlabs Permedia 3            */
 110 #define FB_ACCEL_ATI_RADEON     38      /* ATI Radeon family            */
 111 #define FB_ACCEL_I810           39      /* Intel 810/815                */
 112 #define FB_ACCEL_SIS_GLAMOUR_2  40      /* SiS 315, 650, 740            */
 113 #define FB_ACCEL_SIS_XABRE      41      /* SiS 330 ("Xabre")            */
 114 #define FB_ACCEL_I830           42      /* Intel 830M/845G/85x/865G     */
 115 #define FB_ACCEL_NV_10          43      /* nVidia Arch 10               */
 116 #define FB_ACCEL_NV_20          44      /* nVidia Arch 20               */
 117 #define FB_ACCEL_NV_30          45      /* nVidia Arch 30               */
 118 #define FB_ACCEL_NV_40          46      /* nVidia Arch 40               */
 119 #define FB_ACCEL_XGI_VOLARI_V   47      /* XGI Volari V3XT, V5, V8      */
 120 #define FB_ACCEL_XGI_VOLARI_Z   48      /* XGI Volari Z7                */
 121 #define FB_ACCEL_OMAP1610       49      /* TI OMAP16xx                  */
 122 #define FB_ACCEL_TRIDENT_TGUI   50      /* Trident TGUI                 */
 123 #define FB_ACCEL_TRIDENT_3DIMAGE 51     /* Trident 3DImage              */
 124 #define FB_ACCEL_TRIDENT_BLADE3D 52     /* Trident Blade3D              */
 125 #define FB_ACCEL_TRIDENT_BLADEXP 53     /* Trident BladeXP              */
 126 #define FB_ACCEL_CIRRUS_ALPINE   53     /* Cirrus Logic 543x/544x/5480  */
 127 #define FB_ACCEL_NEOMAGIC_NM2070 90     /* NeoMagic NM2070              */
 128 #define FB_ACCEL_NEOMAGIC_NM2090 91     /* NeoMagic NM2090              */
 129 #define FB_ACCEL_NEOMAGIC_NM2093 92     /* NeoMagic NM2093              */
 130 #define FB_ACCEL_NEOMAGIC_NM2097 93     /* NeoMagic NM2097              */
 131 #define FB_ACCEL_NEOMAGIC_NM2160 94     /* NeoMagic NM2160              */
 132 #define FB_ACCEL_NEOMAGIC_NM2200 95     /* NeoMagic NM2200              */
 133 #define FB_ACCEL_NEOMAGIC_NM2230 96     /* NeoMagic NM2230              */
 134 #define FB_ACCEL_NEOMAGIC_NM2360 97     /* NeoMagic NM2360              */
 135 #define FB_ACCEL_NEOMAGIC_NM2380 98     /* NeoMagic NM2380              */
 136 #define FB_ACCEL_PXA3XX          99     /* PXA3xx                       */
 137
 138 #define FB_ACCEL_SAVAGE4        0x80    /* S3 Savage4                   */
 139 #define FB_ACCEL_SAVAGE3D       0x81    /* S3 Savage3D                  */
 140 #define FB_ACCEL_SAVAGE3D_MV    0x82    /* S3 Savage3D-MV               */
 141 #define FB_ACCEL_SAVAGE2000     0x83    /* S3 Savage2000                */
 142 #define FB_ACCEL_SAVAGE_MX_MV   0x84    /* S3 Savage/MX-MV              */
 143 #define FB_ACCEL_SAVAGE_MX      0x85    /* S3 Savage/MX                 */
 144 #define FB_ACCEL_SAVAGE_IX_MV   0x86    /* S3 Savage/IX-MV              */
 145 #define FB_ACCEL_SAVAGE_IX      0x87    /* S3 Savage/IX                 */
 146 #define FB_ACCEL_PROSAVAGE_PM   0x88    /* S3 ProSavage PM133           */
 147 #define FB_ACCEL_PROSAVAGE_KM   0x89    /* S3 ProSavage KM133           */
 148 #define FB_ACCEL_S3TWISTER_P    0x8a    /* S3 Twister                   */
 149 #define FB_ACCEL_S3TWISTER_K    0x8b    /* S3 TwisterK                  */
 150 #define FB_ACCEL_SUPERSAVAGE    0x8c    /* S3 Supersavage               */
 151 #define FB_ACCEL_PROSAVAGE_DDR  0x8d    /* S3 ProSavage DDR             */
 152 #define FB_ACCEL_PROSAVAGE_DDRK 0x8e    /* S3 ProSavage DDR-K           */
 153
 154 struct fb_fix_screeninfo {
 155         char id[16];                    /* identification string eg "TT Builtin" */
 156         unsigned long smem_start;       /* Start of frame buffer mem */
 157                                         /* (physical address) */
 158         __u32 smem_len;                 /* Length of frame buffer mem */
 159         __u32 type;                     /* see FB_TYPE_*                */
 160         __u32 type_aux;                 /* Interleave for interleaved Planes */
 161         __u32 visual;                   /* see FB_VISUAL_*              */
 162         __u16 xpanstep;                 /* zero if no hardware panning  */
 163         __u16 ypanstep;                 /* zero if no hardware panning  */
 164         __u16 ywrapstep;                /* zero if no hardware ywrap    */
 165         __u32 line_length;              /* length of a line in bytes    */
 166         unsigned long mmio_start;       /* Start of Memory Mapped I/O   */
 167                                         /* (physical address) */
 168         __u32 mmio_len;                 /* Length of Memory Mapped I/O  */
 169         __u32 accel;                    /* Indicate to driver which     */
 170                                         /*  specific chip/card we have  */
 171         __u16 reserved[3];              /* Reserved for future compatibility */
 172 };
 173
 174 /* Interpretation of offset for color fields: All offsets are from the right,
 175  * inside a "pixel" value, which is exactly 'bits_per_pixel' wide (means: you
 176  * can use the offset as right argument to <<). A pixel afterwards is a bit
 177  * stream and is written to video memory as that unmodified.
 178  *
 179  * For pseudocolor: offset and length should be the same for all color
 180  * components. Offset specifies the position of the least significant bit
 181  * of the pallette index in a pixel value. Length indicates the number
 182  * of available palette entries (i.e. # of entries = 1 << length).
 183  */
 184 struct fb_bitfield {
 185         __u32 offset;                   /* beginning of bitfield        */
 186         __u32 length;                   /* length of bitfield           */
 187         __u32 msb_right;                /* != 0 : Most significant bit is */
 188                                         /* right */
 189 };
 190
 191 #define FB_NONSTD_HAM           1       /* Hold-And-Modify (HAM)        */
 192 #define FB_NONSTD_REV_PIX_IN_B  2       /* order of pixels in each byte is reversed */
 193
 194 #define FB_ACTIVATE_NOW         0       /* set values immediately (or vbl)*/
 195 #define FB_ACTIVATE_NXTOPEN     1       /* activate on next open        */
 196 #define FB_ACTIVATE_TEST        2       /* don't set, round up impossible */
 197 #define FB_ACTIVATE_MASK       15
 198                                         /* values                       */
 199 #define FB_ACTIVATE_VBL        16       /* activate values on next vbl  */
 200 #define FB_CHANGE_CMAP_VBL     32       /* change colormap on vbl       */
 201 #define FB_ACTIVATE_ALL        64       /* change all VCs on this fb    */
 202 #define FB_ACTIVATE_FORCE     128       /* force apply even when no change*/
 203 #define FB_ACTIVATE_INV_MODE  256       /* invalidate videomode */
 204
 205 #define FB_ACCELF_TEXT          1       /* (OBSOLETE) see fb_info.flags and vc_mode */
 206
 207 #define FB_SYNC_HOR_HIGH_ACT    1       /* horizontal sync high active  */
 208 #define FB_SYNC_VERT_HIGH_ACT   2       /* vertical sync high active    */
 209 #define FB_SYNC_EXT             4       /* external sync                */
 210 #define FB_SYNC_COMP_HIGH_ACT   8       /* composite sync high active   */
 211 #define FB_SYNC_BROADCAST       16      /* broadcast video timings      */
 212                                         /* vtotal = 144d/288n/576i => PAL  */
 213                                         /* vtotal = 121d/242n/484i => NTSC */
 214 #define FB_SYNC_ON_GREEN        32      /* sync on green */
 215
 216 #define FB_VMODE_NONINTERLACED  0       /* non interlaced */
 217 #define FB_VMODE_INTERLACED     1       /* interlaced   */
 218 #define FB_VMODE_DOUBLE         2       /* double scan */
 219 #define FB_VMODE_ODD_FLD_FIRST  4       /* interlaced: top line first */
 220 #define FB_VMODE_MASK           255
 221
 222 #define FB_VMODE_YWRAP          256     /* ywrap instead of panning     */
 223 #define FB_VMODE_SMOOTH_XPAN    512     /* smooth xpan possible (internally used) */
 224 #define FB_VMODE_CONUPDATE      512     /* don't update x/yoffset       */
 225
 226 /*
 227  * Display rotation support
 228  */
 229 #define FB_ROTATE_UR      0
 230 #define FB_ROTATE_CW      1
 231 #define FB_ROTATE_UD      2
 232 #define FB_ROTATE_CCW     3
 233
 234 #define PICOS2KHZ(a) (1000000000UL/(a))
 235 #define KHZ2PICOS(a) (1000000000UL/(a))
 236
 237 struct fb_var_screeninfo {
 238         __u32 xres;                     /* visible resolution           */
 239         __u32 yres;
 240         __u32 xres_virtual;             /* virtual resolution           */
 241         __u32 yres_virtual;
 242         __u32 xoffset;                  /* offset from virtual to visible */
 243         __u32 yoffset;                  /* resolution                   */
 244
 245         __u32 bits_per_pixel;           /* guess what                   */
 246         __u32 grayscale;                /* != 0 Graylevels instead of colors */
 247
 248         struct fb_bitfield red;         /* bitfield in fb mem if true color, */
 249         struct fb_bitfield green;       /* else only length is significant */
 250         struct fb_bitfield blue;
 251         struct fb_bitfield transp;      /* transparency                 */
 252
 253         __u32 nonstd;                   /* != 0 Non standard pixel format */
 254
 255         __u32 activate;                 /* see FB_ACTIVATE_*            */
 256
 257         __u32 height;                   /* height of picture in mm    */
 258         __u32 width;                    /* width of picture in mm     */
 259
 260         __u32 accel_flags;              /* (OBSOLETE) see fb_info.flags */
 261
 262         /* Timing: All values in pixclocks, except pixclock (of course) */
 263         __u32 pixclock;                 /* pixel clock in ps (pico seconds) */
 264         __u32 left_margin;              /* time from sync to picture    */
 265         __u32 right_margin;             /* time from picture to sync    */
 266         __u32 upper_margin;             /* time from sync to picture    */
 267         __u32 lower_margin;
 268         __u32 hsync_len;                /* length of horizontal sync    */
 269         __u32 vsync_len;                /* length of vertical sync      */
 270         __u32 sync;                     /* see FB_SYNC_*                */
 271         __u32 vmode;                    /* see FB_VMODE_*               */
 272         __u32 rotate;                   /* angle we rotate counter clockwise */
 273         __u32 reserved[5];              /* Reserved for future compatibility */
 274 };
 275
 276 struct fb_cmap {
 277         __u32 start;                    /* First entry  */
 278         __u32 len;                      /* Number of entries */
 279         __u16 *red;                     /* Red values   */
 280         __u16 *green;
 281         __u16 *blue;
 282         __u16 *transp;                  /* transparency, can be NULL */
 283 };
 284
 285 struct fb_con2fbmap {
 286         __u32 console;
 287         __u32 framebuffer;
 288 };
 289
 290 /* VESA Blanking Levels */
 291 #define VESA_NO_BLANKING        0
 292 #define VESA_VSYNC_SUSPEND      1
 293 #define VESA_HSYNC_SUSPEND      2
 294 #define VESA_POWERDOWN          3
 295
 296
 297 enum {
 298         /* screen: unblanked, hsync: on,  vsync: on */
 299         FB_BLANK_UNBLANK       = VESA_NO_BLANKING,
 300
 301         /* screen: blanked,   hsync: on,  vsync: on */
 302         FB_BLANK_NORMAL        = VESA_NO_BLANKING + 1,
 303
 304         /* screen: blanked,   hsync: on,  vsync: off */
 305         FB_BLANK_VSYNC_SUSPEND = VESA_VSYNC_SUSPEND + 1,
 306
 307         /* screen: blanked,   hsync: off, vsync: on */
 308         FB_BLANK_HSYNC_SUSPEND = VESA_HSYNC_SUSPEND + 1,
 309
 310         /* screen: blanked,   hsync: off, vsync: off */
 311         FB_BLANK_POWERDOWN     = VESA_POWERDOWN + 1
 312 };
 313
 314 #define FB_VBLANK_VBLANKING     0x001   /* currently in a vertical blank */
 315 #define FB_VBLANK_HBLANKING     0x002   /* currently in a horizontal blank */
 316 #define FB_VBLANK_HAVE_VBLANK   0x004   /* vertical blanks can be detected */
 317 #define FB_VBLANK_HAVE_HBLANK   0x008   /* horizontal blanks can be detected */
 318 #define FB_VBLANK_HAVE_COUNT    0x010   /* global retrace counter is available */
 319 #define FB_VBLANK_HAVE_VCOUNT   0x020   /* the vcount field is valid */
 320 #define FB_VBLANK_HAVE_HCOUNT   0x040   /* the hcount field is valid */
 321 #define FB_VBLANK_VSYNCING      0x080   /* currently in a vsync */
 322 #define FB_VBLANK_HAVE_VSYNC    0x100   /* verical syncs can be detected */
 323
 324 struct fb_vblank {
 325         __u32 flags;                    /* FB_VBLANK flags */
 326         __u32 count;                    /* counter of retraces since boot */
 327         __u32 vcount;                   /* current scanline position */
 328         __u32 hcount;                   /* current scandot position */
 329         __u32 reserved[4];              /* reserved for future compatibility */
 330 };
 331
 332 /* Internal HW accel */
 333 #define ROP_COPY 0
 334 #define ROP_XOR  1
 335
 336 struct fb_copyarea {
 337         __u32 dx;
 338         __u32 dy;
 339         __u32 width;
 340         __u32 height;
 341         __u32 sx;
 342         __u32 sy;
 343 };
 344
 345 struct fb_fillrect {
 346         __u32 dx;       /* screen-relative */
 347         __u32 dy;
 348         __u32 width;
 349         __u32 height;
 350         __u32 color;
 351         __u32 rop;
 352 };
 353
 354 struct fb_image {
 355         __u32 dx;               /* Where to place image */
 356         __u32 dy;
 357         __u32 width;            /* Size of image */
 358         __u32 height;
 359         __u32 fg_color;         /* Only used when a mono bitmap */
 360         __u32 bg_color;
 361         __u8  depth;            /* Depth of the image */
 362         const char *data;       /* Pointer to image data */
 363         struct fb_cmap cmap;    /* color map info */
 364 };
 365
 366 /*
 367  * hardware cursor control
 368  */
 369
 370 #define FB_CUR_SETIMAGE 0x01
 371 #define FB_CUR_SETPOS   0x02
 372 #define FB_CUR_SETHOT   0x04
 373 #define FB_CUR_SETCMAP  0x08
 374 #define FB_CUR_SETSHAPE 0x10
 375 #define FB_CUR_SETSIZE  0x20
 376 #define FB_CUR_SETALL   0xFF
 377
 378 struct fbcurpos {
 379         __u16 x, y;
 380 };
 381
 382 struct fb_cursor {
 383         __u16 set;              /* what to set */
 384         __u16 enable;           /* cursor on/off */
 385         __u16 rop;              /* bitop operation */
 386         const char *mask;       /* cursor mask bits */
 387         struct fbcurpos hot;    /* cursor hot spot */
 388         struct fb_image image;  /* Cursor image */
 389 };
 390
 391 #ifdef CONFIG_FB_BACKLIGHT
 392 /* Settings for the generic backlight code */
 393 #define FB_BACKLIGHT_LEVELS     128
 394 #define FB_BACKLIGHT_MAX        0xFF
 395 #endif
 396
 397 #ifdef __KERNEL__
 398
 399 #include <linux/fs.h>
 400 #include <linux/init.h>
 401 #include <linux/device.h>
 402 #include <linux/workqueue.h>
 403 #include <linux/notifier.h>
 404 #include <linux/list.h>
 405 #include <linux/backlight.h>
 406 #include <linux/slab.h>
 407 #include <asm/io.h>
 408
 409 struct vm_area_struct;
 410 struct fb_info;
 411 struct device;
 412 struct file;
 413
 414 /* Definitions below are used in the parsed monitor specs */
 415 #define FB_DPMS_ACTIVE_OFF      1
 416 #define FB_DPMS_SUSPEND         2
 417 #define FB_DPMS_STANDBY         4
 418
 419 #define FB_DISP_DDI             1
 420 #define FB_DISP_ANA_700_300     2
 421 #define FB_DISP_ANA_714_286     4
 422 #define FB_DISP_ANA_1000_400    8
 423 #define FB_DISP_ANA_700_000     16
 424
 425 #define FB_DISP_MONO            32
 426 #define FB_DISP_RGB             64
 427 #define FB_DISP_MULTI           128
 428 #define FB_DISP_UNKNOWN         256
 429
 430 #define FB_SIGNAL_NONE          0
 431 #define FB_SIGNAL_BLANK_BLANK   1
 432 #define FB_SIGNAL_SEPARATE      2
 433 #define FB_SIGNAL_COMPOSITE     4
 434 #define FB_SIGNAL_SYNC_ON_GREEN 8
 435 #define FB_SIGNAL_SERRATION_ON  16
 436
 437 #define FB_MISC_PRIM_COLOR      1
 438 #define FB_MISC_1ST_DETAIL      2       /* First Detailed Timing is preferred */
 439 struct fb_chroma {
 440         __u32 redx;     /* in fraction of 1024 */
 441         __u32 greenx;
 442         __u32 bluex;
 443         __u32 whitex;
 444         __u32 redy;
 445         __u32 greeny;
 446         __u32 bluey;
 447         __u32 whitey;
 448 };
 449
 450 struct fb_monspecs {
 451         struct fb_chroma chroma;
 452         struct fb_videomode *modedb;    /* mode database */
 453         __u8  manufacturer[4];          /* Manufacturer */
 454         __u8  monitor[14];              /* Monitor String */
 455         __u8  serial_no[14];            /* Serial Number */
 456         __u8  ascii[14];                /* ? */
 457         __u32 modedb_len;               /* mode database length */
 458         __u32 model;                    /* Monitor Model */
 459         __u32 serial;                   /* Serial Number - Integer */
 460         __u32 year;                     /* Year manufactured */
 461         __u32 week;                     /* Week Manufactured */
 462         __u32 hfmin;                    /* hfreq lower limit (Hz) */
 463         __u32 hfmax;                    /* hfreq upper limit (Hz) */
 464         __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
 465         __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
 466         __u16 input;                    /* display type - see FB_DISP_* */
 467         __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
 468         __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
 469         __u16 vfmin;                    /* vfreq lower limit (Hz) */
 470         __u16 vfmax;                    /* vfreq upper limit (Hz) */
 471         __u16 gamma;                    /* Gamma - in fractions of 100 */
 472         __u16 gtf       : 1;            /* supports GTF */
 473         __u16 misc;                     /* Misc flags - see FB_MISC_* */
 474         __u8  version;                  /* EDID version... */
 475         __u8  revision;                 /* ...and revision */
 476         __u8  max_x;                    /* Maximum horizontal size (cm) */
 477         __u8  max_y;                    /* Maximum vertical size (cm) */
 478 };
 479
 480 struct fb_cmap_user {
 481         __u32 start;                    /* First entry  */
 482         __u32 len;                      /* Number of entries */
 483         __u16 __user *red;              /* Red values   */
 484         __u16 __user *green;
 485         __u16 __user *blue;
 486         __u16 __user *transp;           /* transparency, can be NULL */
 487 };
 488
 489 struct fb_image_user {
 490         __u32 dx;                       /* Where to place image */
 491         __u32 dy;
 492         __u32 width;                    /* Size of image */
 493         __u32 height;
 494         __u32 fg_color;                 /* Only used when a mono bitmap */
 495         __u32 bg_color;
 496         __u8  depth;                    /* Depth of the image */
 497         const char __user *data;        /* Pointer to image data */
 498         struct fb_cmap_user cmap;       /* color map info */
 499 };
 500
 501 struct fb_cursor_user {
 502         __u16 set;                      /* what to set */
 503         __u16 enable;                   /* cursor on/off */
 504         __u16 rop;                      /* bitop operation */
 505         const char __user *mask;        /* cursor mask bits */
 506         struct fbcurpos hot;            /* cursor hot spot */
 507         struct fb_image_user image;     /* Cursor image */
 508 };
 509
 510 /*
 511  * Register/unregister for framebuffer events
 512  */
 513
 514 /*      The resolution of the passed in fb_info about to change */
 515 #define FB_EVENT_MODE_CHANGE            0x01
 516 /*      The display on this fb_info is beeing suspended, no access to the
 517  *      framebuffer is allowed any more after that call returns
 518  */
 519 #define FB_EVENT_SUSPEND                0x02
 520 /*      The display on this fb_info was resumed, you can restore the display
 521  *      if you own it
 522  */
 523 #define FB_EVENT_RESUME                 0x03
 524 /*      An entry from the modelist was removed */
 525 #define FB_EVENT_MODE_DELETE            0x04
 526 /*      A driver registered itself */
 527 #define FB_EVENT_FB_REGISTERED          0x05
 528 /*      A driver unregistered itself */
 529 #define FB_EVENT_FB_UNREGISTERED        0x06
 530 /*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
 531 #define FB_EVENT_GET_CONSOLE_MAP        0x07
 532 /*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
 533 #define FB_EVENT_SET_CONSOLE_MAP        0x08
 534 /*      A hardware display blank change occured */
 535 #define FB_EVENT_BLANK                  0x09
 536 /*      Private modelist is to be replaced */
 537 #define FB_EVENT_NEW_MODELIST           0x0A
 538 /*      The resolution of the passed in fb_info about to change and
 539         all vc's should be changed         */
 540 #define FB_EVENT_MODE_CHANGE_ALL        0x0B
 541 /*      A software display blank change occured */
 542 #define FB_EVENT_CONBLANK               0x0C
 543 /*      Get drawing requirements        */
 544 #define FB_EVENT_GET_REQ                0x0D
 545 /*      Unbind from the console if possible */
 546 #define FB_EVENT_FB_UNBIND              0x0E
 547 /*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
 548 #define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
 549
 550 struct fb_event {
 551         struct fb_info *info;
 552         void *data;
 553 };
 554
 555 struct fb_blit_caps {
 556         u32 x;
 557         u32 y;
 558         u32 len;
 559         u32 flags;
 560 };
 561
 562 extern int fb_register_client(struct notifier_block *nb);
 563 extern int fb_unregister_client(struct notifier_block *nb);
 564 extern int fb_notifier_call_chain(unsigned long val, void *v);
 565 /*
 566  * Pixmap structure definition
 567  *
 568  * The purpose of this structure is to translate data
 569  * from the hardware independent format of fbdev to what
 570  * format the hardware needs.
 571  */
 572
 573 #define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
 574 #define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
 575 #define FB_PIXMAP_IO      4     /* memory is iomapped       */
 576 #define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
 577
 578 struct fb_pixmap {
 579         u8  *addr;              /* pointer to memory                    */
 580         u32 size;               /* size of buffer in bytes              */
 581         u32 offset;             /* current offset to buffer             */
 582         u32 buf_align;          /* byte alignment of each bitmap        */
 583         u32 scan_align;         /* alignment per scanline               */
 584         u32 access_align;       /* alignment per read/write (bits)      */
 585         u32 flags;              /* see FB_PIXMAP_*                      */
 586         u32 blit_x;             /* supported bit block dimensions (1-32)*/
 587         u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
 588                                 /*         blit_y = 1 << (height - 1)   */
 589                                 /* if 0, will be set to 0xffffffff (all)*/
 590         /* access methods */
 591         void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
 592         void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
 593 };
 594
 595 #ifdef CONFIG_FB_DEFERRED_IO
 596 struct fb_deferred_io {
 597         /* delay between mkwrite and deferred handler */
 598         unsigned long delay;
 599         struct mutex lock; /* mutex that protects the page list */
 600         struct list_head pagelist; /* list of touched pages */
 601         /* callback */
 602         void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
 603 };
 604 #endif
 605
 606 /*
 607  * Frame buffer operations
 608  *
 609  * LOCKING NOTE: those functions must _ALL_ be called with the console
 610  * semaphore held, this is the only suitable locking mechanism we have
 611  * in 2.6. Some may be called at interrupt time at this point though.
 612  */
 613
 614 struct fb_ops {
 615         /* open/release and usage marking */
 616         struct module *owner;
 617         int (*fb_open)(struct fb_info *info, int user);
 618         int (*fb_release)(struct fb_info *info, int user);
 619
 620         /* For framebuffers with strange non linear layouts or that do not
 621          * work with normal memory mapped access
 622          */
 623         ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
 624                            size_t count, loff_t *ppos);
 625         ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
 626                             size_t count, loff_t *ppos);
 627
 628         /* checks var and eventually tweaks it to something supported,
 629          * DO NOT MODIFY PAR */
 630         int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
 631
 632         /* set the video mode according to info->var */
 633         int (*fb_set_par)(struct fb_info *info);
 634
 635         /* set color register */
 636         int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
 637                             unsigned blue, unsigned transp, struct fb_info *info);
 638
 639         /* set color registers in batch */
 640         int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
 641
 642         /* blank display */
 643         int (*fb_blank)(int blank, struct fb_info *info);
 644
 645         /* pan display */
 646         int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
 647
 648         /* Draws a rectangle */
 649         void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
 650         /* Copy data from area to another */
 651         void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
 652         /* Draws a image to the display */
 653         void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
 654
 655         /* Draws cursor */
 656         int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
 657
 658         /* Rotates the display */
 659         void (*fb_rotate)(struct fb_info *info, int angle);
 660
 661         /* wait for blit idle, optional */
 662         int (*fb_sync)(struct fb_info *info);
 663
 664         /* perform fb specific ioctl (optional) */
 665         int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
 666                         unsigned long arg);
 667
 668         /* Handle 32bit compat ioctl (optional) */
 669         int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
 670                         unsigned long arg);
 671
 672         /* perform fb specific mmap */
 673         int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
 674
 675         /* get capability given var */
 676         void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
 677                             struct fb_var_screeninfo *var);
 678
 679         /* teardown any resources to do with this framebuffer */
 680         void (*fb_destroy)(struct fb_info *info);
 681 };
 682
 683 #ifdef CONFIG_FB_TILEBLITTING
 684 #define FB_TILE_CURSOR_NONE        0
 685 #define FB_TILE_CURSOR_UNDERLINE   1
 686 #define FB_TILE_CURSOR_LOWER_THIRD 2
 687 #define FB_TILE_CURSOR_LOWER_HALF  3
 688 #define FB_TILE_CURSOR_TWO_THIRDS  4
 689 #define FB_TILE_CURSOR_BLOCK       5
 690
 691 struct fb_tilemap {
 692         __u32 width;                /* width of each tile in pixels */
 693         __u32 height;               /* height of each tile in scanlines */
 694         __u32 depth;                /* color depth of each tile */
 695         __u32 length;               /* number of tiles in the map */
 696         const __u8 *data;           /* actual tile map: a bitmap array, packed
 697                                        to the nearest byte */
 698 };
 699
 700 struct fb_tilerect {
 701         __u32 sx;                   /* origin in the x-axis */
 702         __u32 sy;                   /* origin in the y-axis */
 703         __u32 width;                /* number of tiles in the x-axis */
 704         __u32 height;               /* number of tiles in the y-axis */
 705         __u32 index;                /* what tile to use: index to tile map */
 706         __u32 fg;                   /* foreground color */
 707         __u32 bg;                   /* background color */
 708         __u32 rop;                  /* raster operation */
 709 };
 710
 711 struct fb_tilearea {
 712         __u32 sx;                   /* source origin in the x-axis */
 713         __u32 sy;                   /* source origin in the y-axis */
 714         __u32 dx;                   /* destination origin in the x-axis */
 715         __u32 dy;                   /* destination origin in the y-axis */
 716         __u32 width;                /* number of tiles in the x-axis */
 717         __u32 height;               /* number of tiles in the y-axis */
 718 };
 719
 720 struct fb_tileblit {
 721         __u32 sx;                   /* origin in the x-axis */
 722         __u32 sy;                   /* origin in the y-axis */
 723         __u32 width;                /* number of tiles in the x-axis */
 724         __u32 height;               /* number of tiles in the y-axis */
 725         __u32 fg;                   /* foreground color */
 726         __u32 bg;                   /* background color */
 727         __u32 length;               /* number of tiles to draw */
 728         __u32 *indices;             /* array of indices to tile map */
 729 };
 730
 731 struct fb_tilecursor {
 732         __u32 sx;                   /* cursor position in the x-axis */
 733         __u32 sy;                   /* cursor position in the y-axis */
 734         __u32 mode;                 /* 0 = erase, 1 = draw */
 735         __u32 shape;                /* see FB_TILE_CURSOR_* */
 736         __u32 fg;                   /* foreground color */
 737         __u32 bg;                   /* background color */
 738 };
 739
 740 struct fb_tile_ops {
 741         /* set tile characteristics */
 742         void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
 743
 744         /* all dimensions from hereon are in terms of tiles */
 745
 746         /* move a rectangular region of tiles from one area to another*/
 747         void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
 748         /* fill a rectangular region with a tile */
 749         void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
 750         /* copy an array of tiles */
 751         void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
 752         /* cursor */
 753         void (*fb_tilecursor)(struct fb_info *info,
 754                               struct fb_tilecursor *cursor);
 755         /* get maximum length of the tile map */
 756         int (*fb_get_tilemax)(struct fb_info *info);
 757 };
 758 #endif /* CONFIG_FB_TILEBLITTING */
 759
 760 /* FBINFO_* = fb_info.flags bit flags */
 761 #define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
 762 #define FBINFO_HWACCEL_DISABLED 0x0002
 763         /* When FBINFO_HWACCEL_DISABLED is set:
 764          *  Hardware acceleration is turned off.  Software implementations
 765          *  of required functions (copyarea(), fillrect(), and imageblit())
 766          *  takes over; acceleration engine should be in a quiescent state */
 767
 768 /* hints */
 769 #define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
 770 #define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
 771 #define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
 772
 773 /* hardware supported ops */
 774 /*  semantics: when a bit is set, it indicates that the operation is
 775  *   accelerated by hardware.
 776  *  required functions will still work even if the bit is not set.
 777  *  optional functions may not even exist if the flag bit is not set.
 778  */
 779 #define FBINFO_HWACCEL_NONE             0x0000
 780 #define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
 781 #define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
 782 #define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
 783 #define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
 784 #define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
 785 #define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
 786 #define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
 787
 788 #define FBINFO_MISC_USEREVENT          0x10000 /* event request
 789                                                   from userspace */
 790 #define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
 791 #define FBINFO_MISC_FIRMWARE           0x40000 /* a replaceable firmware
 792                                                   inited framebuffer */
 793
 794 /* A driver may set this flag to indicate that it does want a set_par to be
 795  * called every time when fbcon_switch is executed. The advantage is that with
 796  * this flag set you can really be sure that set_par is always called before
 797  * any of the functions dependant on the correct hardware state or altering
 798  * that state, even if you are using some broken X releases. The disadvantage
 799  * is that it introduces unwanted delays to every console switch if set_par
 800  * is slow. It is a good idea to try this flag in the drivers initialization
 801  * code whenever there is a bug report related to switching between X and the
 802  * framebuffer console.
 803  */
 804 #define FBINFO_MISC_ALWAYS_SETPAR   0x40000
 805
 806 /*
 807  * Host and GPU endianness differ.
 808  */
 809 #define FBINFO_FOREIGN_ENDIAN   0x100000
 810 /*
 811  * Big endian math. This is the same flags as above, but with different
 812  * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
 813  * and host endianness. Drivers should not use this flag.
 814  */
 815 #define FBINFO_BE_MATH  0x100000
 816
 817 struct fb_info {
 818         int node;
 819         int flags;
 820         struct mutex lock;              /* Lock for open/release/ioctl funcs */
 821         struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
 822         struct fb_var_screeninfo var;   /* Current var */
 823         struct fb_fix_screeninfo fix;   /* Current fix */
 824         struct fb_monspecs monspecs;    /* Current Monitor specs */
 825         struct work_struct queue;       /* Framebuffer event queue */
 826         struct fb_pixmap pixmap;        /* Image hardware mapper */
 827         struct fb_pixmap sprite;        /* Cursor hardware mapper */
 828         struct fb_cmap cmap;            /* Current cmap */
 829         struct list_head modelist;      /* mode list */
 830         struct fb_videomode *mode;      /* current mode */
 831
 832 #ifdef CONFIG_FB_BACKLIGHT
 833         /* assigned backlight device */
 834         /* set before framebuffer registration,
 835            remove after unregister */
 836         struct backlight_device *bl_dev;
 837
 838         /* Backlight level curve */
 839         struct mutex bl_curve_mutex;
 840         u8 bl_curve[FB_BACKLIGHT_LEVELS];
 841 #endif
 842 #ifdef CONFIG_FB_DEFERRED_IO
 843         struct delayed_work deferred_work;
 844         struct fb_deferred_io *fbdefio;
 845 #endif
 846
 847         struct fb_ops *fbops;
 848         struct device *device;          /* This is the parent */
 849         struct device *dev;             /* This is this fb device */
 850         int class_flag;                    /* private sysfs flags */
 851 #ifdef CONFIG_FB_TILEBLITTING
 852         struct fb_tile_ops *tileops;    /* Tile Blitting */
 853 #endif
 854         char __iomem *screen_base;      /* Virtual address */
 855         unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */
 856         void *pseudo_palette;           /* Fake palette of 16 colors */
 857 #define FBINFO_STATE_RUNNING    0
 858 #define FBINFO_STATE_SUSPENDED  1
 859         u32 state;                      /* Hardware state i.e suspend */
 860         void *fbcon_par;                /* fbcon use-only private area */
 861         /* From here on everything is device dependent */
 862         void *par;
 863         /* we need the PCI or similiar aperture base/size not
 864            smem_start/size as smem_start may just be an object
 865            allocated inside the aperture so may not actually overlap */
 866         struct apertures_struct {
 867                 unsigned int count;
 868                 struct aperture {
 869                         resource_size_t base;
 870                         resource_size_t size;
 871                 } ranges[0];
 872         } *apertures;
 873 };
 874
 875 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
 876         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
 877                         + max_num * sizeof(struct aperture), GFP_KERNEL);
 878         a->count = max_num;
 879         return a;
 880 }
 881
 882 #ifdef MODULE
 883 #define FBINFO_DEFAULT  FBINFO_MODULE
 884 #else
 885 #define FBINFO_DEFAULT  0
 886 #endif
 887
 888 // This will go away
 889 #define FBINFO_FLAG_MODULE      FBINFO_MODULE
 890 #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
 891
 892 /* This will go away
 893  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 894  * when it wants to turn the acceleration engine on.  This is
 895  * really a separate operation, and should be modified via sysfs.
 896  *  But for now, we leave it broken with the following define
 897  */
 898 #define STUPID_ACCELF_TEXT_SHIT
 899
 900 // This will go away
 901 #if defined(__sparc__)
 902
 903 /* We map all of our framebuffers such that big-endian accesses
 904  * are what we want, so the following is sufficient.
 905  */
 906
 907 // This will go away
 908 #define fb_readb sbus_readb
 909 #define fb_readw sbus_readw
 910 #define fb_readl sbus_readl
 911 #define fb_readq sbus_readq
 912 #define fb_writeb sbus_writeb
 913 #define fb_writew sbus_writew
 914 #define fb_writel sbus_writel
 915 #define fb_writeq sbus_writeq
 916 #define fb_memset sbus_memset_io
 917
 918 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
 919
 920 #define fb_readb __raw_readb
 921 #define fb_readw __raw_readw
 922 #define fb_readl __raw_readl
 923 #define fb_readq __raw_readq
 924 #define fb_writeb __raw_writeb
 925 #define fb_writew __raw_writew
 926 #define fb_writel __raw_writel
 927 #define fb_writeq __raw_writeq
 928 #define fb_memset memset_io
 929
 930 #else
 931
 932 #define fb_readb(addr) (*(volatile u8 *) (addr))
 933 #define fb_readw(addr) (*(volatile u16 *) (addr))
 934 #define fb_readl(addr) (*(volatile u32 *) (addr))
 935 #define fb_readq(addr) (*(volatile u64 *) (addr))
 936 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
 937 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
 938 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
 939 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
 940 #define fb_memset memset
 941
 942 #endif
 943
 944 #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
 945 #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
 946                                                       (val) << (bits))
 947 #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
 948                                                       (val) >> (bits))
 949
 950     /*
 951      *  `Generic' versions of the frame buffer device operations
 952      */
 953
 954 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
 955 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
 956 extern int fb_blank(struct fb_info *info, int blank);
 957 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 958 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 959 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 960 /*
 961  * Drawing operations where framebuffer is in system RAM
 962  */
 963 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 964 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 965 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
 966 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
 967                            size_t count, loff_t *ppos);
 968 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
 969                             size_t count, loff_t *ppos);
 970
 971 /* drivers/video/fbmem.c */
 972 extern int register_framebuffer(struct fb_info *fb_info);
 973 extern int unregister_framebuffer(struct fb_info *fb_info);
 974 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 975 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 976 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
 977 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
 978                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
 979 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 980 extern void fb_set_suspend(struct fb_info *info, int state);
 981 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
 982                               struct fb_fix_screeninfo *fix);
 983 extern int fb_get_options(char *name, char **option);
 984 extern int fb_new_modelist(struct fb_info *info);
 985
 986 extern struct fb_info *registered_fb[FB_MAX];
 987 extern int num_registered_fb;
 988 extern struct class *fb_class;
 989
 990 extern int lock_fb_info(struct fb_info *info);
 991
 992 static inline void unlock_fb_info(struct fb_info *info)
 993 {
 994         mutex_unlock(&info->lock);
 995 }
 996
 997 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
 998                                            u8 *src, u32 s_pitch, u32 height)
 999 {
1000         int i, j;
1001
1002         d_pitch -= s_pitch;
1003
1004         for (i = height; i--; ) {
1005                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
1006                 for (j = 0; j < s_pitch; j++)
1007                         *dst++ = *src++;
1008                 dst += d_pitch;
1009         }
1010 }
1011
1012 /* drivers/video/fb_defio.c */
1013 extern void fb_deferred_io_init(struct fb_info *info);
1014 extern void fb_deferred_io_open(struct fb_info *info,
1015                                 struct inode *inode,
1016                                 struct file *file);
1017 extern void fb_deferred_io_cleanup(struct fb_info *info);
1018 extern int fb_deferred_io_fsync(struct file *file, struct dentry *dentry,
1019                                 int datasync);
1020
1021 static inline bool fb_be_math(struct fb_info *info)
1022 {
1023 #ifdef CONFIG_FB_FOREIGN_ENDIAN
1024 #if defined(CONFIG_FB_BOTH_ENDIAN)
1025         return info->flags & FBINFO_BE_MATH;
1026 #elif defined(CONFIG_FB_BIG_ENDIAN)
1027         return true;
1028 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
1029         return false;
1030 #endif /* CONFIG_FB_BOTH_ENDIAN */
1031 #else
1032 #ifdef __BIG_ENDIAN
1033         return true;
1034 #else
1035         return false;
1036 #endif /* __BIG_ENDIAN */
1037 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
1038 }
1039
1040 /* drivers/video/fbsysfs.c */
1041 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
1042 extern void framebuffer_release(struct fb_info *info);
1043 extern int fb_init_device(struct fb_info *fb_info);
1044 extern void fb_cleanup_device(struct fb_info *head);
1045 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
1046
1047 /* drivers/video/fbmon.c */
1048 #define FB_MAXTIMINGS           0
1049 #define FB_VSYNCTIMINGS         1
1050 #define FB_HSYNCTIMINGS         2
1051 #define FB_DCLKTIMINGS          3
1052 #define FB_IGNOREMON            0x100
1053
1054 #define FB_MODE_IS_UNKNOWN      0
1055 #define FB_MODE_IS_DETAILED     1
1056 #define FB_MODE_IS_STANDARD     2
1057 #define FB_MODE_IS_VESA         4
1058 #define FB_MODE_IS_CALCULATED   8
1059 #define FB_MODE_IS_FIRST        16
1060 #define FB_MODE_IS_FROM_VAR     32
1061
1062 extern int fbmon_dpms(const struct fb_info *fb_info);
1063 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
1064                        struct fb_info *info);
1065 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
1066                             struct fb_info *info);
1067 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
1068 extern const unsigned char *fb_firmware_edid(struct device *device);
1069 extern void fb_edid_to_monspecs(unsigned char *edid,
1070                                 struct fb_monspecs *specs);
1071 extern void fb_destroy_modedb(struct fb_videomode *modedb);
1072 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
1073 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
1074
1075 /* drivers/video/modedb.c */
1076 #define VESA_MODEDB_SIZE 34
1077 extern void fb_var_to_videomode(struct fb_videomode *mode,
1078                                 const struct fb_var_screeninfo *var);
1079 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
1080                                 const struct fb_videomode *mode);
1081 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
1082                             const struct fb_videomode *mode2);
1083 extern int fb_add_videomode(const struct fb_videomode *mode,
1084                             struct list_head *head);
1085 extern void fb_delete_videomode(const struct fb_videomode *mode,
1086                                 struct list_head *head);
1087 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
1088                                                 struct list_head *head);
1089 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
1090                                                     struct list_head *head);
1091 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
1092                                                        struct list_head *head);
1093 extern void fb_destroy_modelist(struct list_head *head);
1094 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
1095                                      struct list_head *head);
1096 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1097                                                        struct list_head *head);
1098
1099 /* drivers/video/fbcmap.c */
1100 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
1101 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
1102 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
1103 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
1104 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
1105 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
1106 extern const struct fb_cmap *fb_default_cmap(int len);
1107 extern void fb_invert_cmaps(void);
1108
1109 struct fb_videomode {
1110         const char *name;       /* optional */
1111         u32 refresh;            /* optional */
1112         u32 xres;
1113         u32 yres;
1114         u32 pixclock;
1115         u32 left_margin;
1116         u32 right_margin;
1117         u32 upper_margin;
1118         u32 lower_margin;
1119         u32 hsync_len;
1120         u32 vsync_len;
1121         u32 sync;
1122         u32 vmode;
1123         u32 flag;
1124 };
1125
1126 extern const char *fb_mode_option;
1127 extern const struct fb_videomode vesa_modes[];
1128
1129 struct fb_modelist {
1130         struct list_head list;
1131         struct fb_videomode mode;
1132 };
1133
1134 extern int fb_find_mode(struct fb_var_screeninfo *var,
1135                         struct fb_info *info, const char *mode_option,
1136                         const struct fb_videomode *db,
1137                         unsigned int dbsize,
1138                         const struct fb_videomode *default_mode,
1139                         unsigned int default_bpp);
1140
1141 #endif /* __KERNEL__ */
1142
1143 #endif /* _LINUX_FB_H */