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 #ifdef __KERNEL__
   7 #include <linux/kgdb.h>
   8 #endif /* __KERNEL__ */
   9
  10 /* Definitions of frame buffers                                         */
  11
  12 #define FB_MAX                  32      /* sufficient for now */
  13
  14 /* ioctls
  15    0x46 is 'F'                                                          */
  16 #define FBIOGET_VSCREENINFO     0x4600
  17 #define FBIOPUT_VSCREENINFO     0x4601
  18 #define FBIOGET_FSCREENINFO     0x4602
  19 #define FBIOGETCMAP             0x4604
  20 #define FBIOPUTCMAP             0x4605
  21 #define FBIOPAN_DISPLAY         0x4606
  22 #ifdef __KERNEL__
  23 #define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor_user)
  24 #else
  25 #define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor)
  26 #endif
  27 /* 0x4607-0x460B are defined below */
  28 /* #define FBIOGET_MONITORSPEC  0x460C */
  29 /* #define FBIOPUT_MONITORSPEC  0x460D */
  30 /* #define FBIOSWITCH_MONIBIT   0x460E */
  31 #define FBIOGET_CON2FBMAP       0x460F
  32 #define FBIOPUT_CON2FBMAP       0x4610
  33 #define FBIOBLANK               0x4611          /* arg: 0 or vesa level + 1 */
  34 #define FBIOGET_VBLANK          _IOR('F', 0x12, struct fb_vblank)
  35 #define FBIO_ALLOC              0x4613
  36 #define FBIO_FREE               0x4614
  37 #define FBIOGET_GLYPH           0x4615
  38 #define FBIOGET_HWCINFO         0x4616
  39 #define FBIOPUT_MODEINFO        0x4617
  40 #define FBIOGET_DISPINFO        0x4618
  41 #define FBIO_WAITFORVSYNC       _IOW('F', 0x20, __u32)
  42
  43 #define FB_TYPE_PACKED_PIXELS           0       /* Packed Pixels        */
  44 #define FB_TYPE_PLANES                  1       /* Non interleaved planes */
  45 #define FB_TYPE_INTERLEAVED_PLANES      2       /* Interleaved planes   */
  46 #define FB_TYPE_TEXT                    3       /* Text/attributes      */
  47 #define FB_TYPE_VGA_PLANES              4       /* EGA/VGA planes       */
  48
  49 #define FB_AUX_TEXT_MDA         0       /* Monochrome text */
  50 #define FB_AUX_TEXT_CGA         1       /* CGA/EGA/VGA Color text */
  51 #define FB_AUX_TEXT_S3_MMIO     2       /* S3 MMIO fasttext */
  52 #define FB_AUX_TEXT_MGA_STEP16  3       /* MGA Millenium I: text, attr, 14 reserved bytes */
  53 #define FB_AUX_TEXT_MGA_STEP8   4       /* other MGAs:      text, attr,  6 reserved bytes */
  54 #define FB_AUX_TEXT_SVGA_GROUP  8       /* 8-15: SVGA tileblit compatible modes */
  55 #define FB_AUX_TEXT_SVGA_MASK   7       /* lower three bits says step */
  56 #define FB_AUX_TEXT_SVGA_STEP2  8       /* SVGA text mode:  text, attr */
  57 #define FB_AUX_TEXT_SVGA_STEP4  9       /* SVGA text mode:  text, attr,  2 reserved bytes */
  58 #define FB_AUX_TEXT_SVGA_STEP8  10      /* SVGA text mode:  text, attr,  6 reserved bytes */
  59 #define FB_AUX_TEXT_SVGA_STEP16 11      /* SVGA text mode:  text, attr, 14 reserved bytes */
  60 #define FB_AUX_TEXT_SVGA_LAST   15      /* reserved up to 15 */
  61
  62 #define FB_AUX_VGA_PLANES_VGA4          0       /* 16 color planes (EGA/VGA) */
  63 #define FB_AUX_VGA_PLANES_CFB4          1       /* CFB4 in planes (VGA) */
  64 #define FB_AUX_VGA_PLANES_CFB8          2       /* CFB8 in planes (VGA) */
  65
  66 #define FB_VISUAL_MONO01                0       /* Monochr. 1=Black 0=White */
  67 #define FB_VISUAL_MONO10                1       /* Monochr. 1=White 0=Black */
  68 #define FB_VISUAL_TRUECOLOR             2       /* True color   */
  69 #define FB_VISUAL_PSEUDOCOLOR           3       /* Pseudo color (like atari) */
  70 #define FB_VISUAL_DIRECTCOLOR           4       /* Direct color */
  71 #define FB_VISUAL_STATIC_PSEUDOCOLOR    5       /* Pseudo color readonly */
  72
  73 #define FB_ACCEL_NONE           0       /* no hardware accelerator      */
  74 #define FB_ACCEL_ATARIBLITT     1       /* Atari Blitter                */
  75 #define FB_ACCEL_AMIGABLITT     2       /* Amiga Blitter                */
  76 #define FB_ACCEL_S3_TRIO64      3       /* Cybervision64 (S3 Trio64)    */
  77 #define FB_ACCEL_NCR_77C32BLT   4       /* RetinaZ3 (NCR 77C32BLT)      */
  78 #define FB_ACCEL_S3_VIRGE       5       /* Cybervision64/3D (S3 ViRGE)  */
  79 #define FB_ACCEL_ATI_MACH64GX   6       /* ATI Mach 64GX family         */
  80 #define FB_ACCEL_DEC_TGA        7       /* DEC 21030 TGA                */
  81 #define FB_ACCEL_ATI_MACH64CT   8       /* ATI Mach 64CT family         */
  82 #define FB_ACCEL_ATI_MACH64VT   9       /* ATI Mach 64CT family VT class */
  83 #define FB_ACCEL_ATI_MACH64GT   10      /* ATI Mach 64CT family GT class */
  84 #define FB_ACCEL_SUN_CREATOR    11      /* Sun Creator/Creator3D        */
  85 #define FB_ACCEL_SUN_CGSIX      12      /* Sun cg6                      */
  86 #define FB_ACCEL_SUN_LEO        13      /* Sun leo/zx                   */
  87 #define FB_ACCEL_IMS_TWINTURBO  14      /* IMS Twin Turbo               */
  88 #define FB_ACCEL_3DLABS_PERMEDIA2 15    /* 3Dlabs Permedia 2            */
  89 #define FB_ACCEL_MATROX_MGA2064W 16     /* Matrox MGA2064W (Millenium)  */
  90 #define FB_ACCEL_MATROX_MGA1064SG 17    /* Matrox MGA1064SG (Mystique)  */
  91 #define FB_ACCEL_MATROX_MGA2164W 18     /* Matrox MGA2164W (Millenium II) */
  92 #define FB_ACCEL_MATROX_MGA2164W_AGP 19 /* Matrox MGA2164W (Millenium II) */
  93 #define FB_ACCEL_MATROX_MGAG100 20      /* Matrox G100 (Productiva G100) */
  94 #define FB_ACCEL_MATROX_MGAG200 21      /* Matrox G200 (Myst, Mill, ...) */
  95 #define FB_ACCEL_SUN_CG14       22      /* Sun cgfourteen                */
  96 #define FB_ACCEL_SUN_BWTWO      23      /* Sun bwtwo                    */
  97 #define FB_ACCEL_SUN_CGTHREE    24      /* Sun cgthree                  */
  98 #define FB_ACCEL_SUN_TCX        25      /* Sun tcx                      */
  99 #define FB_ACCEL_MATROX_MGAG400 26      /* Matrox G400                  */
 100 #define FB_ACCEL_NV3            27      /* nVidia RIVA 128              */
 101 #define FB_ACCEL_NV4            28      /* nVidia RIVA TNT              */
 102 #define FB_ACCEL_NV5            29      /* nVidia RIVA TNT2             */
 103 #define FB_ACCEL_CT_6555x       30      /* C&T 6555x                    */
 104 #define FB_ACCEL_3DFX_BANSHEE   31      /* 3Dfx Banshee                 */
 105 #define FB_ACCEL_ATI_RAGE128    32      /* ATI Rage128 family           */
 106 #define FB_ACCEL_IGS_CYBER2000  33      /* CyberPro 2000                */
 107 #define FB_ACCEL_IGS_CYBER2010  34      /* CyberPro 2010                */
 108 #define FB_ACCEL_IGS_CYBER5000  35      /* CyberPro 5000                */
 109 #define FB_ACCEL_SIS_GLAMOUR    36      /* SiS 300/630/540              */
 110 #define FB_ACCEL_3DLABS_PERMEDIA3 37    /* 3Dlabs Permedia 3            */
 111 #define FB_ACCEL_ATI_RADEON     38      /* ATI Radeon family            */
 112 #define FB_ACCEL_I810           39      /* Intel 810/815                */
 113 #define FB_ACCEL_SIS_GLAMOUR_2  40      /* SiS 315, 650, 740            */
 114 #define FB_ACCEL_SIS_XABRE      41      /* SiS 330 ("Xabre")            */
 115 #define FB_ACCEL_I830           42      /* Intel 830M/845G/85x/865G     */
 116 #define FB_ACCEL_NV_10          43      /* nVidia Arch 10               */
 117 #define FB_ACCEL_NV_20          44      /* nVidia Arch 20               */
 118 #define FB_ACCEL_NV_30          45      /* nVidia Arch 30               */
 119 #define FB_ACCEL_NV_40          46      /* nVidia Arch 40               */
 120 #define FB_ACCEL_XGI_VOLARI_V   47      /* XGI Volari V3XT, V5, V8      */
 121 #define FB_ACCEL_XGI_VOLARI_Z   48      /* XGI Volari Z7                */
 122 #define FB_ACCEL_OMAP1610       49      /* TI OMAP16xx                  */
 123 #define FB_ACCEL_TRIDENT_TGUI   50      /* Trident TGUI                 */
 124 #define FB_ACCEL_TRIDENT_3DIMAGE 51     /* Trident 3DImage              */
 125 #define FB_ACCEL_TRIDENT_BLADE3D 52     /* Trident Blade3D              */
 126 #define FB_ACCEL_TRIDENT_BLADEXP 53     /* Trident BladeXP              */
 127 #define FB_ACCEL_CIRRUS_ALPINE   53     /* Cirrus Logic 543x/544x/5480  */
 128 #define FB_ACCEL_NEOMAGIC_NM2070 90     /* NeoMagic NM2070              */
 129 #define FB_ACCEL_NEOMAGIC_NM2090 91     /* NeoMagic NM2090              */
 130 #define FB_ACCEL_NEOMAGIC_NM2093 92     /* NeoMagic NM2093              */
 131 #define FB_ACCEL_NEOMAGIC_NM2097 93     /* NeoMagic NM2097              */
 132 #define FB_ACCEL_NEOMAGIC_NM2160 94     /* NeoMagic NM2160              */
 133 #define FB_ACCEL_NEOMAGIC_NM2200 95     /* NeoMagic NM2200              */
 134 #define FB_ACCEL_NEOMAGIC_NM2230 96     /* NeoMagic NM2230              */
 135 #define FB_ACCEL_NEOMAGIC_NM2360 97     /* NeoMagic NM2360              */
 136 #define FB_ACCEL_NEOMAGIC_NM2380 98     /* NeoMagic NM2380              */
 137 #define FB_ACCEL_PXA3XX          99     /* PXA3xx                       */
 138
 139 #define FB_ACCEL_SAVAGE4        0x80    /* S3 Savage4                   */
 140 #define FB_ACCEL_SAVAGE3D       0x81    /* S3 Savage3D                  */
 141 #define FB_ACCEL_SAVAGE3D_MV    0x82    /* S3 Savage3D-MV               */
 142 #define FB_ACCEL_SAVAGE2000     0x83    /* S3 Savage2000                */
 143 #define FB_ACCEL_SAVAGE_MX_MV   0x84    /* S3 Savage/MX-MV              */
 144 #define FB_ACCEL_SAVAGE_MX      0x85    /* S3 Savage/MX                 */
 145 #define FB_ACCEL_SAVAGE_IX_MV   0x86    /* S3 Savage/IX-MV              */
 146 #define FB_ACCEL_SAVAGE_IX      0x87    /* S3 Savage/IX                 */
 147 #define FB_ACCEL_PROSAVAGE_PM   0x88    /* S3 ProSavage PM133           */
 148 #define FB_ACCEL_PROSAVAGE_KM   0x89    /* S3 ProSavage KM133           */
 149 #define FB_ACCEL_S3TWISTER_P    0x8a    /* S3 Twister                   */
 150 #define FB_ACCEL_S3TWISTER_K    0x8b    /* S3 TwisterK                  */
 151 #define FB_ACCEL_SUPERSAVAGE    0x8c    /* S3 Supersavage               */
 152 #define FB_ACCEL_PROSAVAGE_DDR  0x8d    /* S3 ProSavage DDR             */
 153 #define FB_ACCEL_PROSAVAGE_DDRK 0x8e    /* S3 ProSavage DDR-K           */
 154
 155 struct fb_fix_screeninfo {
 156         char id[16];                    /* identification string eg "TT Builtin" */
 157         unsigned long smem_start;       /* Start of frame buffer mem */
 158                                         /* (physical address) */
 159         __u32 smem_len;                 /* Length of frame buffer mem */
 160         __u32 type;                     /* see FB_TYPE_*                */
 161         __u32 type_aux;                 /* Interleave for interleaved Planes */
 162         __u32 visual;                   /* see FB_VISUAL_*              */
 163         __u16 xpanstep;                 /* zero if no hardware panning  */
 164         __u16 ypanstep;                 /* zero if no hardware panning  */
 165         __u16 ywrapstep;                /* zero if no hardware ywrap    */
 166         __u32 line_length;              /* length of a line in bytes    */
 167         unsigned long mmio_start;       /* Start of Memory Mapped I/O   */
 168                                         /* (physical address) */
 169         __u32 mmio_len;                 /* Length of Memory Mapped I/O  */
 170         __u32 accel;                    /* Indicate to driver which     */
 171                                         /*  specific chip/card we have  */
 172         __u16 reserved[3];              /* Reserved for future compatibility */
 173 };
 174
 175 /* Interpretation of offset for color fields: All offsets are from the right,
 176  * inside a "pixel" value, which is exactly 'bits_per_pixel' wide (means: you
 177  * can use the offset as right argument to <<). A pixel afterwards is a bit
 178  * stream and is written to video memory as that unmodified.
 179  *
 180  * For pseudocolor: offset and length should be the same for all color
 181  * components. Offset specifies the position of the least significant bit
 182  * of the pallette index in a pixel value. Length indicates the number
 183  * of available palette entries (i.e. # of entries = 1 << length).
 184  */
 185 struct fb_bitfield {
 186         __u32 offset;                   /* beginning of bitfield        */
 187         __u32 length;                   /* length of bitfield           */
 188         __u32 msb_right;                /* != 0 : Most significant bit is */
 189                                         /* right */
 190 };
 191
 192 #define FB_NONSTD_HAM           1       /* Hold-And-Modify (HAM)        */
 193 #define FB_NONSTD_REV_PIX_IN_B  2       /* order of pixels in each byte is reversed */
 194
 195 #define FB_ACTIVATE_NOW         0       /* set values immediately (or vbl)*/
 196 #define FB_ACTIVATE_NXTOPEN     1       /* activate on next open        */
 197 #define FB_ACTIVATE_TEST        2       /* don't set, round up impossible */
 198 #define FB_ACTIVATE_MASK       15
 199                                         /* values                       */
 200 #define FB_ACTIVATE_VBL        16       /* activate values on next vbl  */
 201 #define FB_CHANGE_CMAP_VBL     32       /* change colormap on vbl       */
 202 #define FB_ACTIVATE_ALL        64       /* change all VCs on this fb    */
 203 #define FB_ACTIVATE_FORCE     128       /* force apply even when no change*/
 204 #define FB_ACTIVATE_INV_MODE  256       /* invalidate videomode */
 205
 206 #define FB_ACCELF_TEXT          1       /* (OBSOLETE) see fb_info.flags and vc_mode */
 207
 208 #define FB_SYNC_HOR_HIGH_ACT    1       /* horizontal sync high active  */
 209 #define FB_SYNC_VERT_HIGH_ACT   2       /* vertical sync high active    */
 210 #define FB_SYNC_EXT             4       /* external sync                */
 211 #define FB_SYNC_COMP_HIGH_ACT   8       /* composite sync high active   */
 212 #define FB_SYNC_BROADCAST       16      /* broadcast video timings      */
 213                                         /* vtotal = 144d/288n/576i => PAL  */
 214                                         /* vtotal = 121d/242n/484i => NTSC */
 215 #define FB_SYNC_ON_GREEN        32      /* sync on green */
 216
 217 #define FB_VMODE_NONINTERLACED  0       /* non interlaced */
 218 #define FB_VMODE_INTERLACED     1       /* interlaced   */
 219 #define FB_VMODE_DOUBLE         2       /* double scan */
 220 #define FB_VMODE_ODD_FLD_FIRST  4       /* interlaced: top line first */
 221 #define FB_VMODE_MASK           255
 222
 223 #define FB_VMODE_YWRAP          256     /* ywrap instead of panning     */
 224 #define FB_VMODE_SMOOTH_XPAN    512     /* smooth xpan possible (internally used) */
 225 #define FB_VMODE_CONUPDATE      512     /* don't update x/yoffset       */
 226
 227 /*
 228  * Display rotation support
 229  */
 230 #define FB_ROTATE_UR      0
 231 #define FB_ROTATE_CW      1
 232 #define FB_ROTATE_UD      2
 233 #define FB_ROTATE_CCW     3
 234
 235 #define PICOS2KHZ(a) (1000000000UL/(a))
 236 #define KHZ2PICOS(a) (1000000000UL/(a))
 237
 238 struct fb_var_screeninfo {
 239         __u32 xres;                     /* visible resolution           */
 240         __u32 yres;
 241         __u32 xres_virtual;             /* virtual resolution           */
 242         __u32 yres_virtual;
 243         __u32 xoffset;                  /* offset from virtual to visible */
 244         __u32 yoffset;                  /* resolution                   */
 245
 246         __u32 bits_per_pixel;           /* guess what                   */
 247         __u32 grayscale;                /* != 0 Graylevels instead of colors */
 248
 249         struct fb_bitfield red;         /* bitfield in fb mem if true color, */
 250         struct fb_bitfield green;       /* else only length is significant */
 251         struct fb_bitfield blue;
 252         struct fb_bitfield transp;      /* transparency                 */
 253
 254         __u32 nonstd;                   /* != 0 Non standard pixel format */
 255
 256         __u32 activate;                 /* see FB_ACTIVATE_*            */
 257
 258         __u32 height;                   /* height of picture in mm    */
 259         __u32 width;                    /* width of picture in mm     */
 260
 261         __u32 accel_flags;              /* (OBSOLETE) see fb_info.flags */
 262
 263         /* Timing: All values in pixclocks, except pixclock (of course) */
 264         __u32 pixclock;                 /* pixel clock in ps (pico seconds) */
 265         __u32 left_margin;              /* time from sync to picture    */
 266         __u32 right_margin;             /* time from picture to sync    */
 267         __u32 upper_margin;             /* time from sync to picture    */
 268         __u32 lower_margin;
 269         __u32 hsync_len;                /* length of horizontal sync    */
 270         __u32 vsync_len;                /* length of vertical sync      */
 271         __u32 sync;                     /* see FB_SYNC_*                */
 272         __u32 vmode;                    /* see FB_VMODE_*               */
 273         __u32 rotate;                   /* angle we rotate counter clockwise */
 274         __u32 reserved[5];              /* Reserved for future compatibility */
 275 };
 276
 277 struct fb_cmap {
 278         __u32 start;                    /* First entry  */
 279         __u32 len;                      /* Number of entries */
 280         __u16 *red;                     /* Red values   */
 281         __u16 *green;
 282         __u16 *blue;
 283         __u16 *transp;                  /* transparency, can be NULL */
 284 };
 285
 286 struct fb_con2fbmap {
 287         __u32 console;
 288         __u32 framebuffer;
 289 };
 290
 291 /* VESA Blanking Levels */
 292 #define VESA_NO_BLANKING        0
 293 #define VESA_VSYNC_SUSPEND      1
 294 #define VESA_HSYNC_SUSPEND      2
 295 #define VESA_POWERDOWN          3
 296
 297
 298 enum {
 299         /* screen: unblanked, hsync: on,  vsync: on */
 300         FB_BLANK_UNBLANK       = VESA_NO_BLANKING,
 301
 302         /* screen: blanked,   hsync: on,  vsync: on */
 303         FB_BLANK_NORMAL        = VESA_NO_BLANKING + 1,
 304
 305         /* screen: blanked,   hsync: on,  vsync: off */
 306         FB_BLANK_VSYNC_SUSPEND = VESA_VSYNC_SUSPEND + 1,
 307
 308         /* screen: blanked,   hsync: off, vsync: on */
 309         FB_BLANK_HSYNC_SUSPEND = VESA_HSYNC_SUSPEND + 1,
 310
 311         /* screen: blanked,   hsync: off, vsync: off */
 312         FB_BLANK_POWERDOWN     = VESA_POWERDOWN + 1
 313 };
 314
 315 #define FB_VBLANK_VBLANKING     0x001   /* currently in a vertical blank */
 316 #define FB_VBLANK_HBLANKING     0x002   /* currently in a horizontal blank */
 317 #define FB_VBLANK_HAVE_VBLANK   0x004   /* vertical blanks can be detected */
 318 #define FB_VBLANK_HAVE_HBLANK   0x008   /* horizontal blanks can be detected */
 319 #define FB_VBLANK_HAVE_COUNT    0x010   /* global retrace counter is available */
 320 #define FB_VBLANK_HAVE_VCOUNT   0x020   /* the vcount field is valid */
 321 #define FB_VBLANK_HAVE_HCOUNT   0x040   /* the hcount field is valid */
 322 #define FB_VBLANK_VSYNCING      0x080   /* currently in a vsync */
 323 #define FB_VBLANK_HAVE_VSYNC    0x100   /* verical syncs can be detected */
 324
 325 struct fb_vblank {
 326         __u32 flags;                    /* FB_VBLANK flags */
 327         __u32 count;                    /* counter of retraces since boot */
 328         __u32 vcount;                   /* current scanline position */
 329         __u32 hcount;                   /* current scandot position */
 330         __u32 reserved[4];              /* reserved for future compatibility */
 331 };
 332
 333 /* Internal HW accel */
 334 #define ROP_COPY 0
 335 #define ROP_XOR  1
 336
 337 struct fb_copyarea {
 338         __u32 dx;
 339         __u32 dy;
 340         __u32 width;
 341         __u32 height;
 342         __u32 sx;
 343         __u32 sy;
 344 };
 345
 346 struct fb_fillrect {
 347         __u32 dx;       /* screen-relative */
 348         __u32 dy;
 349         __u32 width;
 350         __u32 height;
 351         __u32 color;
 352         __u32 rop;
 353 };
 354
 355 struct fb_image {
 356         __u32 dx;               /* Where to place image */
 357         __u32 dy;
 358         __u32 width;            /* Size of image */
 359         __u32 height;
 360         __u32 fg_color;         /* Only used when a mono bitmap */
 361         __u32 bg_color;
 362         __u8  depth;            /* Depth of the image */
 363         const char *data;       /* Pointer to image data */
 364         struct fb_cmap cmap;    /* color map info */
 365 };
 366
 367 /*
 368  * hardware cursor control
 369  */
 370
 371 #define FB_CUR_SETIMAGE 0x01
 372 #define FB_CUR_SETPOS   0x02
 373 #define FB_CUR_SETHOT   0x04
 374 #define FB_CUR_SETCMAP  0x08
 375 #define FB_CUR_SETSHAPE 0x10
 376 #define FB_CUR_SETSIZE  0x20
 377 #define FB_CUR_SETALL   0xFF
 378
 379 struct fbcurpos {
 380         __u16 x, y;
 381 };
 382
 383 struct fb_cursor {
 384         __u16 set;              /* what to set */
 385         __u16 enable;           /* cursor on/off */
 386         __u16 rop;              /* bitop operation */
 387         const char *mask;       /* cursor mask bits */
 388         struct fbcurpos hot;    /* cursor hot spot */
 389         struct fb_image image;  /* Cursor image */
 390 };
 391
 392 #ifdef CONFIG_FB_BACKLIGHT
 393 /* Settings for the generic backlight code */
 394 #define FB_BACKLIGHT_LEVELS     128
 395 #define FB_BACKLIGHT_MAX        0xFF
 396 #endif
 397
 398 #ifdef __KERNEL__
 399
 400 #include <linux/fs.h>
 401 #include <linux/init.h>
 402 #include <linux/device.h>
 403 #include <linux/workqueue.h>
 404 #include <linux/notifier.h>
 405 #include <linux/list.h>
 406 #include <linux/backlight.h>
 407 #include <linux/slab.h>
 408 #include <asm/io.h>
 409
 410 struct vm_area_struct;
 411 struct fb_info;
 412 struct device;
 413 struct file;
 414
 415 /* Definitions below are used in the parsed monitor specs */
 416 #define FB_DPMS_ACTIVE_OFF      1
 417 #define FB_DPMS_SUSPEND         2
 418 #define FB_DPMS_STANDBY         4
 419
 420 #define FB_DISP_DDI             1
 421 #define FB_DISP_ANA_700_300     2
 422 #define FB_DISP_ANA_714_286     4
 423 #define FB_DISP_ANA_1000_400    8
 424 #define FB_DISP_ANA_700_000     16
 425
 426 #define FB_DISP_MONO            32
 427 #define FB_DISP_RGB             64
 428 #define FB_DISP_MULTI           128
 429 #define FB_DISP_UNKNOWN         256
 430
 431 #define FB_SIGNAL_NONE          0
 432 #define FB_SIGNAL_BLANK_BLANK   1
 433 #define FB_SIGNAL_SEPARATE      2
 434 #define FB_SIGNAL_COMPOSITE     4
 435 #define FB_SIGNAL_SYNC_ON_GREEN 8
 436 #define FB_SIGNAL_SERRATION_ON  16
 437
 438 #define FB_MISC_PRIM_COLOR      1
 439 #define FB_MISC_1ST_DETAIL      2       /* First Detailed Timing is preferred */
 440 struct fb_chroma {
 441         __u32 redx;     /* in fraction of 1024 */
 442         __u32 greenx;
 443         __u32 bluex;
 444         __u32 whitex;
 445         __u32 redy;
 446         __u32 greeny;
 447         __u32 bluey;
 448         __u32 whitey;
 449 };
 450
 451 struct fb_monspecs {
 452         struct fb_chroma chroma;
 453         struct fb_videomode *modedb;    /* mode database */
 454         __u8  manufacturer[4];          /* Manufacturer */
 455         __u8  monitor[14];              /* Monitor String */
 456         __u8  serial_no[14];            /* Serial Number */
 457         __u8  ascii[14];                /* ? */
 458         __u32 modedb_len;               /* mode database length */
 459         __u32 model;                    /* Monitor Model */
 460         __u32 serial;                   /* Serial Number - Integer */
 461         __u32 year;                     /* Year manufactured */
 462         __u32 week;                     /* Week Manufactured */
 463         __u32 hfmin;                    /* hfreq lower limit (Hz) */
 464         __u32 hfmax;                    /* hfreq upper limit (Hz) */
 465         __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
 466         __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
 467         __u16 input;                    /* display type - see FB_DISP_* */
 468         __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
 469         __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
 470         __u16 vfmin;                    /* vfreq lower limit (Hz) */
 471         __u16 vfmax;                    /* vfreq upper limit (Hz) */
 472         __u16 gamma;                    /* Gamma - in fractions of 100 */
 473         __u16 gtf       : 1;            /* supports GTF */
 474         __u16 misc;                     /* Misc flags - see FB_MISC_* */
 475         __u8  version;                  /* EDID version... */
 476         __u8  revision;                 /* ...and revision */
 477         __u8  max_x;                    /* Maximum horizontal size (cm) */
 478         __u8  max_y;                    /* Maximum vertical size (cm) */
 479 };
 480
 481 struct fb_cmap_user {
 482         __u32 start;                    /* First entry  */
 483         __u32 len;                      /* Number of entries */
 484         __u16 __user *red;              /* Red values   */
 485         __u16 __user *green;
 486         __u16 __user *blue;
 487         __u16 __user *transp;           /* transparency, can be NULL */
 488 };
 489
 490 struct fb_image_user {
 491         __u32 dx;                       /* Where to place image */
 492         __u32 dy;
 493         __u32 width;                    /* Size of image */
 494         __u32 height;
 495         __u32 fg_color;                 /* Only used when a mono bitmap */
 496         __u32 bg_color;
 497         __u8  depth;                    /* Depth of the image */
 498         const char __user *data;        /* Pointer to image data */
 499         struct fb_cmap_user cmap;       /* color map info */
 500 };
 501
 502 struct fb_cursor_user {
 503         __u16 set;                      /* what to set */
 504         __u16 enable;                   /* cursor on/off */
 505         __u16 rop;                      /* bitop operation */
 506         const char __user *mask;        /* cursor mask bits */
 507         struct fbcurpos hot;            /* cursor hot spot */
 508         struct fb_image_user image;     /* Cursor image */
 509 };
 510
 511 /*
 512  * Register/unregister for framebuffer events
 513  */
 514
 515 /*      The resolution of the passed in fb_info about to change */
 516 #define FB_EVENT_MODE_CHANGE            0x01
 517 /*      The display on this fb_info is beeing suspended, no access to the
 518  *      framebuffer is allowed any more after that call returns
 519  */
 520 #define FB_EVENT_SUSPEND                0x02
 521 /*      The display on this fb_info was resumed, you can restore the display
 522  *      if you own it
 523  */
 524 #define FB_EVENT_RESUME                 0x03
 525 /*      An entry from the modelist was removed */
 526 #define FB_EVENT_MODE_DELETE            0x04
 527 /*      A driver registered itself */
 528 #define FB_EVENT_FB_REGISTERED          0x05
 529 /*      A driver unregistered itself */
 530 #define FB_EVENT_FB_UNREGISTERED        0x06
 531 /*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
 532 #define FB_EVENT_GET_CONSOLE_MAP        0x07
 533 /*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
 534 #define FB_EVENT_SET_CONSOLE_MAP        0x08
 535 /*      A hardware display blank change occured */
 536 #define FB_EVENT_BLANK                  0x09
 537 /*      Private modelist is to be replaced */
 538 #define FB_EVENT_NEW_MODELIST           0x0A
 539 /*      The resolution of the passed in fb_info about to change and
 540         all vc's should be changed         */
 541 #define FB_EVENT_MODE_CHANGE_ALL        0x0B
 542 /*      A software display blank change occured */
 543 #define FB_EVENT_CONBLANK               0x0C
 544 /*      Get drawing requirements        */
 545 #define FB_EVENT_GET_REQ                0x0D
 546 /*      Unbind from the console if possible */
 547 #define FB_EVENT_FB_UNBIND              0x0E
 548 /*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
 549 #define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
 550
 551 struct fb_event {
 552         struct fb_info *info;
 553         void *data;
 554 };
 555
 556 struct fb_blit_caps {
 557         u32 x;
 558         u32 y;
 559         u32 len;
 560         u32 flags;
 561 };
 562
 563 extern int fb_register_client(struct notifier_block *nb);
 564 extern int fb_unregister_client(struct notifier_block *nb);
 565 extern int fb_notifier_call_chain(unsigned long val, void *v);
 566 /*
 567  * Pixmap structure definition
 568  *
 569  * The purpose of this structure is to translate data
 570  * from the hardware independent format of fbdev to what
 571  * format the hardware needs.
 572  */
 573
 574 #define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
 575 #define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
 576 #define FB_PIXMAP_IO      4     /* memory is iomapped       */
 577 #define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
 578
 579 struct fb_pixmap {
 580         u8  *addr;              /* pointer to memory                    */
 581         u32 size;               /* size of buffer in bytes              */
 582         u32 offset;             /* current offset to buffer             */
 583         u32 buf_align;          /* byte alignment of each bitmap        */
 584         u32 scan_align;         /* alignment per scanline               */
 585         u32 access_align;       /* alignment per read/write (bits)      */
 586         u32 flags;              /* see FB_PIXMAP_*                      */
 587         u32 blit_x;             /* supported bit block dimensions (1-32)*/
 588         u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
 589                                 /*         blit_y = 1 << (height - 1)   */
 590                                 /* if 0, will be set to 0xffffffff (all)*/
 591         /* access methods */
 592         void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
 593         void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
 594 };
 595
 596 #ifdef CONFIG_FB_DEFERRED_IO
 597 struct fb_deferred_io {
 598         /* delay between mkwrite and deferred handler */
 599         unsigned long delay;
 600         struct mutex lock; /* mutex that protects the page list */
 601         struct list_head pagelist; /* list of touched pages */
 602         /* callback */
 603         void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
 604 };
 605 #endif
 606
 607 /*
 608  * Frame buffer operations
 609  *
 610  * LOCKING NOTE: those functions must _ALL_ be called with the console
 611  * semaphore held, this is the only suitable locking mechanism we have
 612  * in 2.6. Some may be called at interrupt time at this point though.
 613  *
 614  * The exception to this is the debug related hooks.  Putting the fb
 615  * into a debug state (e.g. flipping to the kernel console) and restoring
 616  * it must be done in a lock-free manner, so low level drivers should
 617  * keep track of the initial console (if applicable) and may need to
 618  * perform direct, unlocked hardware writes in these hooks.
 619  */
 620
 621 struct fb_ops {
 622         /* open/release and usage marking */
 623         struct module *owner;
 624         int (*fb_open)(struct fb_info *info, int user);
 625         int (*fb_release)(struct fb_info *info, int user);
 626
 627         /* For framebuffers with strange non linear layouts or that do not
 628          * work with normal memory mapped access
 629          */
 630         ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
 631                            size_t count, loff_t *ppos);
 632         ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
 633                             size_t count, loff_t *ppos);
 634
 635         /* checks var and eventually tweaks it to something supported,
 636          * DO NOT MODIFY PAR */
 637         int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
 638
 639         /* set the video mode according to info->var */
 640         int (*fb_set_par)(struct fb_info *info);
 641
 642         /* set color register */
 643         int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
 644                             unsigned blue, unsigned transp, struct fb_info *info);
 645
 646         /* set color registers in batch */
 647         int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
 648
 649         /* blank display */
 650         int (*fb_blank)(int blank, struct fb_info *info);
 651
 652         /* pan display */
 653         int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
 654
 655         /* Draws a rectangle */
 656         void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
 657         /* Copy data from area to another */
 658         void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
 659         /* Draws a image to the display */
 660         void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
 661
 662         /* Draws cursor */
 663         int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
 664
 665         /* Rotates the display */
 666         void (*fb_rotate)(struct fb_info *info, int angle);
 667
 668         /* wait for blit idle, optional */
 669         int (*fb_sync)(struct fb_info *info);
 670
 671         /* perform fb specific ioctl (optional) */
 672         int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
 673                         unsigned long arg);
 674
 675         /* Handle 32bit compat ioctl (optional) */
 676         int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
 677                         unsigned long arg);
 678
 679         /* perform fb specific mmap */
 680         int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
 681
 682         /* get capability given var */
 683         void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
 684                             struct fb_var_screeninfo *var);
 685
 686         /* teardown any resources to do with this framebuffer */
 687         void (*fb_destroy)(struct fb_info *info);
 688
 689         /* called at KDB enter and leave time to prepare the console */
 690         int (*fb_debug_enter)(struct fb_info *info);
 691         int (*fb_debug_leave)(struct fb_info *info);
 692 };
 693
 694 #ifdef CONFIG_FB_TILEBLITTING
 695 #define FB_TILE_CURSOR_NONE        0
 696 #define FB_TILE_CURSOR_UNDERLINE   1
 697 #define FB_TILE_CURSOR_LOWER_THIRD 2
 698 #define FB_TILE_CURSOR_LOWER_HALF  3
 699 #define FB_TILE_CURSOR_TWO_THIRDS  4
 700 #define FB_TILE_CURSOR_BLOCK       5
 701
 702 struct fb_tilemap {
 703         __u32 width;                /* width of each tile in pixels */
 704         __u32 height;               /* height of each tile in scanlines */
 705         __u32 depth;                /* color depth of each tile */
 706         __u32 length;               /* number of tiles in the map */
 707         const __u8 *data;           /* actual tile map: a bitmap array, packed
 708                                        to the nearest byte */
 709 };
 710
 711 struct fb_tilerect {
 712         __u32 sx;                   /* origin in the x-axis */
 713         __u32 sy;                   /* origin in the y-axis */
 714         __u32 width;                /* number of tiles in the x-axis */
 715         __u32 height;               /* number of tiles in the y-axis */
 716         __u32 index;                /* what tile to use: index to tile map */
 717         __u32 fg;                   /* foreground color */
 718         __u32 bg;                   /* background color */
 719         __u32 rop;                  /* raster operation */
 720 };
 721
 722 struct fb_tilearea {
 723         __u32 sx;                   /* source origin in the x-axis */
 724         __u32 sy;                   /* source origin in the y-axis */
 725         __u32 dx;                   /* destination origin in the x-axis */
 726         __u32 dy;                   /* destination origin in the y-axis */
 727         __u32 width;                /* number of tiles in the x-axis */
 728         __u32 height;               /* number of tiles in the y-axis */
 729 };
 730
 731 struct fb_tileblit {
 732         __u32 sx;                   /* origin in the x-axis */
 733         __u32 sy;                   /* origin in the y-axis */
 734         __u32 width;                /* number of tiles in the x-axis */
 735         __u32 height;               /* number of tiles in the y-axis */
 736         __u32 fg;                   /* foreground color */
 737         __u32 bg;                   /* background color */
 738         __u32 length;               /* number of tiles to draw */
 739         __u32 *indices;             /* array of indices to tile map */
 740 };
 741
 742 struct fb_tilecursor {
 743         __u32 sx;                   /* cursor position in the x-axis */
 744         __u32 sy;                   /* cursor position in the y-axis */
 745         __u32 mode;                 /* 0 = erase, 1 = draw */
 746         __u32 shape;                /* see FB_TILE_CURSOR_* */
 747         __u32 fg;                   /* foreground color */
 748         __u32 bg;                   /* background color */
 749 };
 750
 751 struct fb_tile_ops {
 752         /* set tile characteristics */
 753         void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
 754
 755         /* all dimensions from hereon are in terms of tiles */
 756
 757         /* move a rectangular region of tiles from one area to another*/
 758         void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
 759         /* fill a rectangular region with a tile */
 760         void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
 761         /* copy an array of tiles */
 762         void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
 763         /* cursor */
 764         void (*fb_tilecursor)(struct fb_info *info,
 765                               struct fb_tilecursor *cursor);
 766         /* get maximum length of the tile map */
 767         int (*fb_get_tilemax)(struct fb_info *info);
 768 };
 769 #endif /* CONFIG_FB_TILEBLITTING */
 770
 771 /* FBINFO_* = fb_info.flags bit flags */
 772 #define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
 773 #define FBINFO_HWACCEL_DISABLED 0x0002
 774         /* When FBINFO_HWACCEL_DISABLED is set:
 775          *  Hardware acceleration is turned off.  Software implementations
 776          *  of required functions (copyarea(), fillrect(), and imageblit())
 777          *  takes over; acceleration engine should be in a quiescent state */
 778
 779 /* hints */
 780 #define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
 781 #define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
 782 #define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
 783
 784 /* hardware supported ops */
 785 /*  semantics: when a bit is set, it indicates that the operation is
 786  *   accelerated by hardware.
 787  *  required functions will still work even if the bit is not set.
 788  *  optional functions may not even exist if the flag bit is not set.
 789  */
 790 #define FBINFO_HWACCEL_NONE             0x0000
 791 #define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
 792 #define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
 793 #define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
 794 #define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
 795 #define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
 796 #define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
 797 #define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
 798
 799 #define FBINFO_MISC_USEREVENT          0x10000 /* event request
 800                                                   from userspace */
 801 #define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
 802
 803 /* A driver may set this flag to indicate that it does want a set_par to be
 804  * called every time when fbcon_switch is executed. The advantage is that with
 805  * this flag set you can really be sure that set_par is always called before
 806  * any of the functions dependant on the correct hardware state or altering
 807  * that state, even if you are using some broken X releases. The disadvantage
 808  * is that it introduces unwanted delays to every console switch if set_par
 809  * is slow. It is a good idea to try this flag in the drivers initialization
 810  * code whenever there is a bug report related to switching between X and the
 811  * framebuffer console.
 812  */
 813 #define FBINFO_MISC_ALWAYS_SETPAR   0x40000
 814
 815 /* where the fb is a firmware driver, and can be replaced with a proper one */
 816 #define FBINFO_MISC_FIRMWARE        0x80000
 817 /*
 818  * Host and GPU endianness differ.
 819  */
 820 #define FBINFO_FOREIGN_ENDIAN   0x100000
 821 /*
 822  * Big endian math. This is the same flags as above, but with different
 823  * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
 824  * and host endianness. Drivers should not use this flag.
 825  */
 826 #define FBINFO_BE_MATH  0x100000
 827
 828 /* report to the VT layer that this fb driver can accept forced console
 829    output like oopses */
 830 #define FBINFO_CAN_FORCE_OUTPUT     0x200000
 831
 832 struct fb_info {
 833         int node;
 834         int flags;
 835         struct mutex lock;              /* Lock for open/release/ioctl funcs */
 836         struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
 837         struct fb_var_screeninfo var;   /* Current var */
 838         struct fb_fix_screeninfo fix;   /* Current fix */
 839         struct fb_monspecs monspecs;    /* Current Monitor specs */
 840         struct work_struct queue;       /* Framebuffer event queue */
 841         struct fb_pixmap pixmap;        /* Image hardware mapper */
 842         struct fb_pixmap sprite;        /* Cursor hardware mapper */
 843         struct fb_cmap cmap;            /* Current cmap */
 844         struct list_head modelist;      /* mode list */
 845         struct fb_videomode *mode;      /* current mode */
 846
 847 #ifdef CONFIG_FB_BACKLIGHT
 848         /* assigned backlight device */
 849         /* set before framebuffer registration,
 850            remove after unregister */
 851         struct backlight_device *bl_dev;
 852
 853         /* Backlight level curve */
 854         struct mutex bl_curve_mutex;
 855         u8 bl_curve[FB_BACKLIGHT_LEVELS];
 856 #endif
 857 #ifdef CONFIG_FB_DEFERRED_IO
 858         struct delayed_work deferred_work;
 859         struct fb_deferred_io *fbdefio;
 860 #endif
 861
 862         struct fb_ops *fbops;
 863         struct device *device;          /* This is the parent */
 864         struct device *dev;             /* This is this fb device */
 865         int class_flag;                    /* private sysfs flags */
 866 #ifdef CONFIG_FB_TILEBLITTING
 867         struct fb_tile_ops *tileops;    /* Tile Blitting */
 868 #endif
 869         char __iomem *screen_base;      /* Virtual address */
 870         unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */
 871         void *pseudo_palette;           /* Fake palette of 16 colors */
 872 #define FBINFO_STATE_RUNNING    0
 873 #define FBINFO_STATE_SUSPENDED  1
 874         u32 state;                      /* Hardware state i.e suspend */
 875         void *fbcon_par;                /* fbcon use-only private area */
 876         /* From here on everything is device dependent */
 877         void *par;
 878         /* we need the PCI or similiar aperture base/size not
 879            smem_start/size as smem_start may just be an object
 880            allocated inside the aperture so may not actually overlap */
 881         struct apertures_struct {
 882                 unsigned int count;
 883                 struct aperture {
 884                         resource_size_t base;
 885                         resource_size_t size;
 886                 } ranges[0];
 887         } *apertures;
 888 };
 889
 890 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
 891         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
 892                         + max_num * sizeof(struct aperture), GFP_KERNEL);
 893         if (!a)
 894                 return NULL;
 895         a->count = max_num;
 896         return a;
 897 }
 898
 899 #ifdef MODULE
 900 #define FBINFO_DEFAULT  FBINFO_MODULE
 901 #else
 902 #define FBINFO_DEFAULT  0
 903 #endif
 904
 905 // This will go away
 906 #define FBINFO_FLAG_MODULE      FBINFO_MODULE
 907 #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
 908
 909 /* This will go away
 910  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 911  * when it wants to turn the acceleration engine on.  This is
 912  * really a separate operation, and should be modified via sysfs.
 913  *  But for now, we leave it broken with the following define
 914  */
 915 #define STUPID_ACCELF_TEXT_SHIT
 916
 917 // This will go away
 918 #if defined(__sparc__)
 919
 920 /* We map all of our framebuffers such that big-endian accesses
 921  * are what we want, so the following is sufficient.
 922  */
 923
 924 // This will go away
 925 #define fb_readb sbus_readb
 926 #define fb_readw sbus_readw
 927 #define fb_readl sbus_readl
 928 #define fb_readq sbus_readq
 929 #define fb_writeb sbus_writeb
 930 #define fb_writew sbus_writew
 931 #define fb_writel sbus_writel
 932 #define fb_writeq sbus_writeq
 933 #define fb_memset sbus_memset_io
 934
 935 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
 936
 937 #define fb_readb __raw_readb
 938 #define fb_readw __raw_readw
 939 #define fb_readl __raw_readl
 940 #define fb_readq __raw_readq
 941 #define fb_writeb __raw_writeb
 942 #define fb_writew __raw_writew
 943 #define fb_writel __raw_writel
 944 #define fb_writeq __raw_writeq
 945 #define fb_memset memset_io
 946
 947 #else
 948
 949 #define fb_readb(addr) (*(volatile u8 *) (addr))
 950 #define fb_readw(addr) (*(volatile u16 *) (addr))
 951 #define fb_readl(addr) (*(volatile u32 *) (addr))
 952 #define fb_readq(addr) (*(volatile u64 *) (addr))
 953 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
 954 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
 955 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
 956 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
 957 #define fb_memset memset
 958
 959 #endif
 960
 961 #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
 962 #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
 963                                                       (val) << (bits))
 964 #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
 965                                                       (val) >> (bits))
 966
 967     /*
 968      *  `Generic' versions of the frame buffer device operations
 969      */
 970
 971 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
 972 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
 973 extern int fb_blank(struct fb_info *info, int blank);
 974 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 975 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 976 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 977 /*
 978  * Drawing operations where framebuffer is in system RAM
 979  */
 980 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 981 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 982 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
 983 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
 984                            size_t count, loff_t *ppos);
 985 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
 986                             size_t count, loff_t *ppos);
 987
 988 /* drivers/video/fbmem.c */
 989 extern int register_framebuffer(struct fb_info *fb_info);
 990 extern int unregister_framebuffer(struct fb_info *fb_info);
 991 extern void remove_conflicting_framebuffers(struct apertures_struct *a,
 992                                 const char *name, bool primary);
 993 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 994 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 995 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
 996 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
 997                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
 998 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 999 extern void fb_set_suspend(struct fb_info *info, int state);
1000 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
1001                               struct fb_fix_screeninfo *fix);
1002 extern int fb_get_options(char *name, char **option);
1003 extern int fb_new_modelist(struct fb_info *info);
1004
1005 extern struct fb_info *registered_fb[FB_MAX];
1006 extern int num_registered_fb;
1007 extern struct class *fb_class;
1008
1009 extern int lock_fb_info(struct fb_info *info);
1010
1011 static inline void unlock_fb_info(struct fb_info *info)
1012 {
1013         mutex_unlock(&info->lock);
1014 }
1015
1016 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
1017                                            u8 *src, u32 s_pitch, u32 height)
1018 {
1019         int i, j;
1020
1021         d_pitch -= s_pitch;
1022
1023         for (i = height; i--; ) {
1024                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
1025                 for (j = 0; j < s_pitch; j++)
1026                         *dst++ = *src++;
1027                 dst += d_pitch;
1028         }
1029 }
1030
1031 /* drivers/video/fb_defio.c */
1032 extern void fb_deferred_io_init(struct fb_info *info);
1033 extern void fb_deferred_io_open(struct fb_info *info,
1034                                 struct inode *inode,
1035                                 struct file *file);
1036 extern void fb_deferred_io_cleanup(struct fb_info *info);
1037 extern int fb_deferred_io_fsync(struct file *file, int datasync);
1038
1039 static inline bool fb_be_math(struct fb_info *info)
1040 {
1041 #ifdef CONFIG_FB_FOREIGN_ENDIAN
1042 #if defined(CONFIG_FB_BOTH_ENDIAN)
1043         return info->flags & FBINFO_BE_MATH;
1044 #elif defined(CONFIG_FB_BIG_ENDIAN)
1045         return true;
1046 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
1047         return false;
1048 #endif /* CONFIG_FB_BOTH_ENDIAN */
1049 #else
1050 #ifdef __BIG_ENDIAN
1051         return true;
1052 #else
1053         return false;
1054 #endif /* __BIG_ENDIAN */
1055 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
1056 }
1057
1058 /* drivers/video/fbsysfs.c */
1059 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
1060 extern void framebuffer_release(struct fb_info *info);
1061 extern int fb_init_device(struct fb_info *fb_info);
1062 extern void fb_cleanup_device(struct fb_info *head);
1063 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
1064
1065 /* drivers/video/fbmon.c */
1066 #define FB_MAXTIMINGS           0
1067 #define FB_VSYNCTIMINGS         1
1068 #define FB_HSYNCTIMINGS         2
1069 #define FB_DCLKTIMINGS          3
1070 #define FB_IGNOREMON            0x100
1071
1072 #define FB_MODE_IS_UNKNOWN      0
1073 #define FB_MODE_IS_DETAILED     1
1074 #define FB_MODE_IS_STANDARD     2
1075 #define FB_MODE_IS_VESA         4
1076 #define FB_MODE_IS_CALCULATED   8
1077 #define FB_MODE_IS_FIRST        16
1078 #define FB_MODE_IS_FROM_VAR     32
1079
1080 extern int fbmon_dpms(const struct fb_info *fb_info);
1081 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
1082                        struct fb_info *info);
1083 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
1084                             struct fb_info *info);
1085 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
1086 extern const unsigned char *fb_firmware_edid(struct device *device);
1087 extern void fb_edid_to_monspecs(unsigned char *edid,
1088                                 struct fb_monspecs *specs);
1089 extern void fb_destroy_modedb(struct fb_videomode *modedb);
1090 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
1091 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
1092
1093 /* drivers/video/modedb.c */
1094 #define VESA_MODEDB_SIZE 34
1095 extern void fb_var_to_videomode(struct fb_videomode *mode,
1096                                 const struct fb_var_screeninfo *var);
1097 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
1098                                 const struct fb_videomode *mode);
1099 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
1100                             const struct fb_videomode *mode2);
1101 extern int fb_add_videomode(const struct fb_videomode *mode,
1102                             struct list_head *head);
1103 extern void fb_delete_videomode(const struct fb_videomode *mode,
1104                                 struct list_head *head);
1105 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
1106                                                 struct list_head *head);
1107 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
1108                                                     struct list_head *head);
1109 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
1110                                                        struct list_head *head);
1111 extern void fb_destroy_modelist(struct list_head *head);
1112 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
1113                                      struct list_head *head);
1114 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1115                                                        struct list_head *head);
1116
1117 /* drivers/video/fbcmap.c */
1118 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
1119 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
1120 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
1121 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
1122 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
1123 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
1124 extern const struct fb_cmap *fb_default_cmap(int len);
1125 extern void fb_invert_cmaps(void);
1126
1127 struct fb_videomode {
1128         const char *name;       /* optional */
1129         u32 refresh;            /* optional */
1130         u32 xres;
1131         u32 yres;
1132         u32 pixclock;
1133         u32 left_margin;
1134         u32 right_margin;
1135         u32 upper_margin;
1136         u32 lower_margin;
1137         u32 hsync_len;
1138         u32 vsync_len;
1139         u32 sync;
1140         u32 vmode;
1141         u32 flag;
1142 };
1143
1144 extern const char *fb_mode_option;
1145 extern const struct fb_videomode vesa_modes[];
1146
1147 struct fb_modelist {
1148         struct list_head list;
1149         struct fb_videomode mode;
1150 };
1151
1152 extern int fb_find_mode(struct fb_var_screeninfo *var,
1153                         struct fb_info *info, const char *mode_option,
1154                         const struct fb_videomode *db,
1155                         unsigned int dbsize,
1156                         const struct fb_videomode *default_mode,
1157                         unsigned int default_bpp);
1158
1159 #endif /* __KERNEL__ */
1160
1161 #endif /* _LINUX_FB_H */