LXR linux/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
 155struct 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 */
 185struct 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
 238struct 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
 277struct 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
 286struct 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
 298enum {
 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
 325struct 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
 337struct fb_copyarea {
 338        __u32 dx;
 339        __u32 dy;
 340        __u32 width;
 341        __u32 height;
 342        __u32 sx;
 343        __u32 sy;
 344};
 345
 346struct fb_fillrect {
 347        __u32 dx;       /* screen-relative */
 348        __u32 dy;
 349        __u32 width;
 350        __u32 height;
 351        __u32 color;
 352        __u32 rop;
 353};
 354
 355struct 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
 379struct fbcurpos {
 380        __u16 x, y;
 381};
 382
 383struct 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
 410struct vm_area_struct;
 411struct fb_info;
 412struct device;
 413struct 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 */
 440struct 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
 451struct 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
 481struct 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
 490struct 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
 502struct 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
 551struct fb_event {
 552        struct fb_info *info;
 553        void *data;
 554};
 555
 556struct fb_blit_caps {
 557        u32 x;
 558        u32 y;
 559        u32 len;
 560        u32 flags;
 561};
 562
 563extern int fb_register_client(struct notifier_block *nb);
 564extern int fb_unregister_client(struct notifier_block *nb);
 565extern 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
 579struct 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
 597struct 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
 621struct 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
 702struct 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
 711struct 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
 722struct 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
 731struct 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
 742struct 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
 751struct 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
 832struct 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
 890static 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
 971extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
 972extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
 973extern int fb_blank(struct fb_info *info, int blank);
 974extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
 975extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
 976extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 977/*
 978 * Drawing operations where framebuffer is in system RAM
 979 */
 980extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 981extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 982extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
 983extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
 984                           size_t count, loff_t *ppos);
 985extern 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 */
 989extern int register_framebuffer(struct fb_info *fb_info);
 990extern int unregister_framebuffer(struct fb_info *fb_info);
 991extern void remove_conflicting_framebuffers(struct apertures_struct *a,
 992                                const char *name, bool primary);
 993extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 994extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 995extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
 996extern 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);
 998extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 999extern void fb_set_suspend(struct fb_info *info, int state);
1000extern int fb_get_color_depth(struct fb_var_screeninfo *var,

1001                              struct fb_fix_screeninfo *fix);
1002extern int fb_get_options(char *name, char **option);
1003extern int fb_new_modelist(struct fb_info *info);
1004
1005extern struct fb_info *registered_fb[FB_MAX];
1006extern int num_registered_fb;
1007extern struct class *fb_class;
1008
1009extern int lock_fb_info(struct fb_info *info);
1010
1011static inline void unlock_fb_info(struct fb_info *info)
1012{
1013        mutex_unlock(&info->lock);
1014}
1015
1016static 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 */
1032extern void fb_deferred_io_init(struct fb_info *info);
1033extern void fb_deferred_io_open(struct fb_info *info,
1034                                struct inode *inode,
1035                                struct file *file);
1036extern void fb_deferred_io_cleanup(struct fb_info *info);
1037extern int fb_deferred_io_fsync(struct file *file, int datasync);
1038
1039static 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 */
1059extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
1060extern void framebuffer_release(struct fb_info *info);
1061extern int fb_init_device(struct fb_info *fb_info);
1062extern void fb_cleanup_device(struct fb_info *head);
1063extern 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
1080extern int fbmon_dpms(const struct fb_info *fb_info);
1081extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
1082                       struct fb_info *info);
1083extern int fb_validate_mode(const struct fb_var_screeninfo *var,
1084                            struct fb_info *info);
1085extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
1086extern const unsigned char *fb_firmware_edid(struct device *device);
1087extern void fb_edid_to_monspecs(unsigned char *edid,
1088                                struct fb_monspecs *specs);
1089extern void fb_destroy_modedb(struct fb_videomode *modedb);
1090extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
1091extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
1092
1093/* drivers/video/modedb.c */
1094#define VESA_MODEDB_SIZE 34
1095extern void fb_var_to_videomode(struct fb_videomode *mode,
1096                                const struct fb_var_screeninfo *var);
1097extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
1098                                const struct fb_videomode *mode);
1099extern int fb_mode_is_equal(const struct fb_videomode *mode1,
1100                            const struct fb_videomode *mode2);
1101extern int fb_add_videomode(const struct fb_videomode *mode,
1102                            struct list_head *head);
1103extern void fb_delete_videomode(const struct fb_videomode *mode,
1104                                struct list_head *head);
1105extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
1106                                                struct list_head *head);
1107extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
1108                                                    struct list_head *head);
1109extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
1110                                                       struct list_head *head);
1111extern void fb_destroy_modelist(struct list_head *head);
1112extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
1113                                     struct list_head *head);
1114extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1115                                                       struct list_head *head);
1116
1117/* drivers/video/fbcmap.c */
1118extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
1119extern void fb_dealloc_cmap(struct fb_cmap *cmap);
1120extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
1121extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
1122extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
1123extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
1124extern const struct fb_cmap *fb_default_cmap(int len);
1125extern void fb_invert_cmaps(void);
1126
1127struct 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
1144extern const char *fb_mode_option;
1145extern const struct fb_videomode vesa_modes[];
1146
1147struct fb_modelist {
1148        struct list_head list;
1149        struct fb_videomode mode;
1150};
1151
1152extern 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 */
1162