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#define FB_TYPE_FOURCC                  5       /* Type identified by a V4L2 FOURCC */
  49
  50#define FB_AUX_TEXT_MDA         0       /* Monochrome text */
  51#define FB_AUX_TEXT_CGA         1       /* CGA/EGA/VGA Color text */
  52#define FB_AUX_TEXT_S3_MMIO     2       /* S3 MMIO fasttext */
  53#define FB_AUX_TEXT_MGA_STEP16  3       /* MGA Millenium I: text, attr, 14 reserved bytes */
  54#define FB_AUX_TEXT_MGA_STEP8   4       /* other MGAs:      text, attr,  6 reserved bytes */
  55#define FB_AUX_TEXT_SVGA_GROUP  8       /* 8-15: SVGA tileblit compatible modes */
  56#define FB_AUX_TEXT_SVGA_MASK   7       /* lower three bits says step */
  57#define FB_AUX_TEXT_SVGA_STEP2  8       /* SVGA text mode:  text, attr */
  58#define FB_AUX_TEXT_SVGA_STEP4  9       /* SVGA text mode:  text, attr,  2 reserved bytes */
  59#define FB_AUX_TEXT_SVGA_STEP8  10      /* SVGA text mode:  text, attr,  6 reserved bytes */
  60#define FB_AUX_TEXT_SVGA_STEP16 11      /* SVGA text mode:  text, attr, 14 reserved bytes */
  61#define FB_AUX_TEXT_SVGA_LAST   15      /* reserved up to 15 */
  62
  63#define FB_AUX_VGA_PLANES_VGA4          0       /* 16 color planes (EGA/VGA) */
  64#define FB_AUX_VGA_PLANES_CFB4          1       /* CFB4 in planes (VGA) */
  65#define FB_AUX_VGA_PLANES_CFB8          2       /* CFB8 in planes (VGA) */
  66
  67#define FB_VISUAL_MONO01                0       /* Monochr. 1=Black 0=White */
  68#define FB_VISUAL_MONO10                1       /* Monochr. 1=White 0=Black */
  69#define FB_VISUAL_TRUECOLOR             2       /* True color   */
  70#define FB_VISUAL_PSEUDOCOLOR           3       /* Pseudo color (like atari) */
  71#define FB_VISUAL_DIRECTCOLOR           4       /* Direct color */
  72#define FB_VISUAL_STATIC_PSEUDOCOLOR    5       /* Pseudo color readonly */
  73#define FB_VISUAL_FOURCC                6       /* Visual identified by a V4L2 FOURCC */
  74
  75#define FB_ACCEL_NONE           0       /* no hardware accelerator      */
  76#define FB_ACCEL_ATARIBLITT     1       /* Atari Blitter                */
  77#define FB_ACCEL_AMIGABLITT     2       /* Amiga Blitter                */
  78#define FB_ACCEL_S3_TRIO64      3       /* Cybervision64 (S3 Trio64)    */
  79#define FB_ACCEL_NCR_77C32BLT   4       /* RetinaZ3 (NCR 77C32BLT)      */
  80#define FB_ACCEL_S3_VIRGE       5       /* Cybervision64/3D (S3 ViRGE)  */
  81#define FB_ACCEL_ATI_MACH64GX   6       /* ATI Mach 64GX family         */
  82#define FB_ACCEL_DEC_TGA        7       /* DEC 21030 TGA                */
  83#define FB_ACCEL_ATI_MACH64CT   8       /* ATI Mach 64CT family         */
  84#define FB_ACCEL_ATI_MACH64VT   9       /* ATI Mach 64CT family VT class */
  85#define FB_ACCEL_ATI_MACH64GT   10      /* ATI Mach 64CT family GT class */
  86#define FB_ACCEL_SUN_CREATOR    11      /* Sun Creator/Creator3D        */
  87#define FB_ACCEL_SUN_CGSIX      12      /* Sun cg6                      */
  88#define FB_ACCEL_SUN_LEO        13      /* Sun leo/zx                   */
  89#define FB_ACCEL_IMS_TWINTURBO  14      /* IMS Twin Turbo               */
  90#define FB_ACCEL_3DLABS_PERMEDIA2 15    /* 3Dlabs Permedia 2            */
  91#define FB_ACCEL_MATROX_MGA2064W 16     /* Matrox MGA2064W (Millenium)  */
  92#define FB_ACCEL_MATROX_MGA1064SG 17    /* Matrox MGA1064SG (Mystique)  */
  93#define FB_ACCEL_MATROX_MGA2164W 18     /* Matrox MGA2164W (Millenium II) */
  94#define FB_ACCEL_MATROX_MGA2164W_AGP 19 /* Matrox MGA2164W (Millenium II) */
  95#define FB_ACCEL_MATROX_MGAG100 20      /* Matrox G100 (Productiva G100) */
  96#define FB_ACCEL_MATROX_MGAG200 21      /* Matrox G200 (Myst, Mill, ...) */
  97#define FB_ACCEL_SUN_CG14       22      /* Sun cgfourteen                */
  98#define FB_ACCEL_SUN_BWTWO      23      /* Sun bwtwo                    */
  99#define FB_ACCEL_SUN_CGTHREE    24      /* Sun cgthree                  */
 100#define FB_ACCEL_SUN_TCX        25      /* Sun tcx                      */
 101#define FB_ACCEL_MATROX_MGAG400 26      /* Matrox G400                  */
 102#define FB_ACCEL_NV3            27      /* nVidia RIVA 128              */
 103#define FB_ACCEL_NV4            28      /* nVidia RIVA TNT              */
 104#define FB_ACCEL_NV5            29      /* nVidia RIVA TNT2             */
 105#define FB_ACCEL_CT_6555x       30      /* C&T 6555x                    */
 106#define FB_ACCEL_3DFX_BANSHEE   31      /* 3Dfx Banshee                 */
 107#define FB_ACCEL_ATI_RAGE128    32      /* ATI Rage128 family           */
 108#define FB_ACCEL_IGS_CYBER2000  33      /* CyberPro 2000                */
 109#define FB_ACCEL_IGS_CYBER2010  34      /* CyberPro 2010                */
 110#define FB_ACCEL_IGS_CYBER5000  35      /* CyberPro 5000                */
 111#define FB_ACCEL_SIS_GLAMOUR    36      /* SiS 300/630/540              */
 112#define FB_ACCEL_3DLABS_PERMEDIA3 37    /* 3Dlabs Permedia 3            */
 113#define FB_ACCEL_ATI_RADEON     38      /* ATI Radeon family            */
 114#define FB_ACCEL_I810           39      /* Intel 810/815                */
 115#define FB_ACCEL_SIS_GLAMOUR_2  40      /* SiS 315, 650, 740            */
 116#define FB_ACCEL_SIS_XABRE      41      /* SiS 330 ("Xabre")            */
 117#define FB_ACCEL_I830           42      /* Intel 830M/845G/85x/865G     */
 118#define FB_ACCEL_NV_10          43      /* nVidia Arch 10               */
 119#define FB_ACCEL_NV_20          44      /* nVidia Arch 20               */
 120#define FB_ACCEL_NV_30          45      /* nVidia Arch 30               */
 121#define FB_ACCEL_NV_40          46      /* nVidia Arch 40               */
 122#define FB_ACCEL_XGI_VOLARI_V   47      /* XGI Volari V3XT, V5, V8      */
 123#define FB_ACCEL_XGI_VOLARI_Z   48      /* XGI Volari Z7                */
 124#define FB_ACCEL_OMAP1610       49      /* TI OMAP16xx                  */
 125#define FB_ACCEL_TRIDENT_TGUI   50      /* Trident TGUI                 */
 126#define FB_ACCEL_TRIDENT_3DIMAGE 51     /* Trident 3DImage              */
 127#define FB_ACCEL_TRIDENT_BLADE3D 52     /* Trident Blade3D              */
 128#define FB_ACCEL_TRIDENT_BLADEXP 53     /* Trident BladeXP              */
 129#define FB_ACCEL_CIRRUS_ALPINE   53     /* Cirrus Logic 543x/544x/5480  */
 130#define FB_ACCEL_NEOMAGIC_NM2070 90     /* NeoMagic NM2070              */
 131#define FB_ACCEL_NEOMAGIC_NM2090 91     /* NeoMagic NM2090              */
 132#define FB_ACCEL_NEOMAGIC_NM2093 92     /* NeoMagic NM2093              */
 133#define FB_ACCEL_NEOMAGIC_NM2097 93     /* NeoMagic NM2097              */
 134#define FB_ACCEL_NEOMAGIC_NM2160 94     /* NeoMagic NM2160              */
 135#define FB_ACCEL_NEOMAGIC_NM2200 95     /* NeoMagic NM2200              */
 136#define FB_ACCEL_NEOMAGIC_NM2230 96     /* NeoMagic NM2230              */
 137#define FB_ACCEL_NEOMAGIC_NM2360 97     /* NeoMagic NM2360              */
 138#define FB_ACCEL_NEOMAGIC_NM2380 98     /* NeoMagic NM2380              */
 139#define FB_ACCEL_PXA3XX          99     /* PXA3xx                       */
 140
 141#define FB_ACCEL_SAVAGE4        0x80    /* S3 Savage4                   */
 142#define FB_ACCEL_SAVAGE3D       0x81    /* S3 Savage3D                  */
 143#define FB_ACCEL_SAVAGE3D_MV    0x82    /* S3 Savage3D-MV               */
 144#define FB_ACCEL_SAVAGE2000     0x83    /* S3 Savage2000                */
 145#define FB_ACCEL_SAVAGE_MX_MV   0x84    /* S3 Savage/MX-MV              */
 146#define FB_ACCEL_SAVAGE_MX      0x85    /* S3 Savage/MX                 */
 147#define FB_ACCEL_SAVAGE_IX_MV   0x86    /* S3 Savage/IX-MV              */
 148#define FB_ACCEL_SAVAGE_IX      0x87    /* S3 Savage/IX                 */
 149#define FB_ACCEL_PROSAVAGE_PM   0x88    /* S3 ProSavage PM133           */
 150#define FB_ACCEL_PROSAVAGE_KM   0x89    /* S3 ProSavage KM133           */
 151#define FB_ACCEL_S3TWISTER_P    0x8a    /* S3 Twister                   */
 152#define FB_ACCEL_S3TWISTER_K    0x8b    /* S3 TwisterK                  */
 153#define FB_ACCEL_SUPERSAVAGE    0x8c    /* S3 Supersavage               */
 154#define FB_ACCEL_PROSAVAGE_DDR  0x8d    /* S3 ProSavage DDR             */
 155#define FB_ACCEL_PROSAVAGE_DDRK 0x8e    /* S3 ProSavage DDR-K           */
 156
 157#define FB_ACCEL_PUV3_UNIGFX    0xa0    /* PKUnity-v3 Unigfx            */
 158
 159#define FB_CAP_FOURCC           1       /* Device supports FOURCC-based formats */
 160
 161struct fb_fix_screeninfo {
 162        char id[16];                    /* identification string eg "TT Builtin" */
 163        unsigned long smem_start;       /* Start of frame buffer mem */
 164                                        /* (physical address) */
 165        __u32 smem_len;                 /* Length of frame buffer mem */
 166        __u32 type;                     /* see FB_TYPE_*                */
 167        __u32 type_aux;                 /* Interleave for interleaved Planes */
 168        __u32 visual;                   /* see FB_VISUAL_*              */ 
 169        __u16 xpanstep;                 /* zero if no hardware panning  */
 170        __u16 ypanstep;                 /* zero if no hardware panning  */
 171        __u16 ywrapstep;                /* zero if no hardware ywrap    */
 172        __u32 line_length;              /* length of a line in bytes    */
 173        unsigned long mmio_start;       /* Start of Memory Mapped I/O   */
 174                                        /* (physical address) */
 175        __u32 mmio_len;                 /* Length of Memory Mapped I/O  */
 176        __u32 accel;                    /* Indicate to driver which     */
 177                                        /*  specific chip/card we have  */
 178        __u16 capabilities;             /* see FB_CAP_*                 */
 179        __u16 reserved[2];              /* Reserved for future compatibility */
 180};
 181
 182/* Interpretation of offset for color fields: All offsets are from the right,
 183 * inside a "pixel" value, which is exactly 'bits_per_pixel' wide (means: you
 184 * can use the offset as right argument to <<). A pixel afterwards is a bit
 185 * stream and is written to video memory as that unmodified.
 186 *
 187 * For pseudocolor: offset and length should be the same for all color
 188 * components. Offset specifies the position of the least significant bit
 189 * of the pallette index in a pixel value. Length indicates the number
 190 * of available palette entries (i.e. # of entries = 1 << length).
 191 */
 192struct fb_bitfield {
 193        __u32 offset;                   /* beginning of bitfield        */
 194        __u32 length;                   /* length of bitfield           */
 195        __u32 msb_right;                /* != 0 : Most significant bit is */ 
 196                                        /* right */ 
 197};
 198
 199#define FB_NONSTD_HAM           1       /* Hold-And-Modify (HAM)        */
 200#define FB_NONSTD_REV_PIX_IN_B  2       /* order of pixels in each byte is reversed */
 201
 202#define FB_ACTIVATE_NOW         0       /* set values immediately (or vbl)*/
 203#define FB_ACTIVATE_NXTOPEN     1       /* activate on next open        */
 204#define FB_ACTIVATE_TEST        2       /* don't set, round up impossible */
 205#define FB_ACTIVATE_MASK       15
 206                                        /* values                       */
 207#define FB_ACTIVATE_VBL        16       /* activate values on next vbl  */
 208#define FB_CHANGE_CMAP_VBL     32       /* change colormap on vbl       */
 209#define FB_ACTIVATE_ALL        64       /* change all VCs on this fb    */
 210#define FB_ACTIVATE_FORCE     128       /* force apply even when no change*/
 211#define FB_ACTIVATE_INV_MODE  256       /* invalidate videomode */
 212
 213#define FB_ACCELF_TEXT          1       /* (OBSOLETE) see fb_info.flags and vc_mode */
 214
 215#define FB_SYNC_HOR_HIGH_ACT    1       /* horizontal sync high active  */
 216#define FB_SYNC_VERT_HIGH_ACT   2       /* vertical sync high active    */
 217#define FB_SYNC_EXT             4       /* external sync                */
 218#define FB_SYNC_COMP_HIGH_ACT   8       /* composite sync high active   */
 219#define FB_SYNC_BROADCAST       16      /* broadcast video timings      */
 220                                        /* vtotal = 144d/288n/576i => PAL  */
 221                                        /* vtotal = 121d/242n/484i => NTSC */
 222#define FB_SYNC_ON_GREEN        32      /* sync on green */
 223
 224#define FB_VMODE_NONINTERLACED  0       /* non interlaced */
 225#define FB_VMODE_INTERLACED     1       /* interlaced   */
 226#define FB_VMODE_DOUBLE         2       /* double scan */
 227#define FB_VMODE_ODD_FLD_FIRST  4       /* interlaced: top line first */
 228#define FB_VMODE_MASK           255
 229
 230#define FB_VMODE_YWRAP          256     /* ywrap instead of panning     */
 231#define FB_VMODE_SMOOTH_XPAN    512     /* smooth xpan possible (internally used) */
 232#define FB_VMODE_CONUPDATE      512     /* don't update x/yoffset       */
 233
 234/*
 235 * Display rotation support
 236 */
 237#define FB_ROTATE_UR      0
 238#define FB_ROTATE_CW      1
 239#define FB_ROTATE_UD      2
 240#define FB_ROTATE_CCW     3
 241
 242#define PICOS2KHZ(a) (1000000000UL/(a))
 243#define KHZ2PICOS(a) (1000000000UL/(a))
 244
 245struct fb_var_screeninfo {
 246        __u32 xres;                     /* visible resolution           */
 247        __u32 yres;
 248        __u32 xres_virtual;             /* virtual resolution           */
 249        __u32 yres_virtual;
 250        __u32 xoffset;                  /* offset from virtual to visible */
 251        __u32 yoffset;                  /* resolution                   */
 252
 253        __u32 bits_per_pixel;           /* guess what                   */
 254        __u32 grayscale;                /* 0 = color, 1 = grayscale,    */
 255                                        /* >1 = FOURCC                  */
 256        struct fb_bitfield red;         /* bitfield in fb mem if true color, */
 257        struct fb_bitfield green;       /* else only length is significant */
 258        struct fb_bitfield blue;
 259        struct fb_bitfield transp;      /* transparency                 */      
 260
 261        __u32 nonstd;                   /* != 0 Non standard pixel format */
 262
 263        __u32 activate;                 /* see FB_ACTIVATE_*            */
 264
 265        __u32 height;                   /* height of picture in mm    */
 266        __u32 width;                    /* width of picture in mm     */
 267
 268        __u32 accel_flags;              /* (OBSOLETE) see fb_info.flags */
 269
 270        /* Timing: All values in pixclocks, except pixclock (of course) */
 271        __u32 pixclock;                 /* pixel clock in ps (pico seconds) */
 272        __u32 left_margin;              /* time from sync to picture    */
 273        __u32 right_margin;             /* time from picture to sync    */
 274        __u32 upper_margin;             /* time from sync to picture    */
 275        __u32 lower_margin;
 276        __u32 hsync_len;                /* length of horizontal sync    */
 277        __u32 vsync_len;                /* length of vertical sync      */
 278        __u32 sync;                     /* see FB_SYNC_*                */
 279        __u32 vmode;                    /* see FB_VMODE_*               */
 280        __u32 rotate;                   /* angle we rotate counter clockwise */
 281        __u32 colorspace;               /* colorspace for FOURCC-based modes */
 282        __u32 reserved[4];              /* Reserved for future compatibility */
 283};
 284
 285struct fb_cmap {
 286        __u32 start;                    /* First entry  */
 287        __u32 len;                      /* Number of entries */
 288        __u16 *red;                     /* Red values   */
 289        __u16 *green;
 290        __u16 *blue;
 291        __u16 *transp;                  /* transparency, can be NULL */
 292};
 293
 294struct fb_con2fbmap {
 295        __u32 console;
 296        __u32 framebuffer;
 297};
 298
 299/* VESA Blanking Levels */
 300#define VESA_NO_BLANKING        0
 301#define VESA_VSYNC_SUSPEND      1
 302#define VESA_HSYNC_SUSPEND      2
 303#define VESA_POWERDOWN          3
 304
 305
 306enum {
 307        /* screen: unblanked, hsync: on,  vsync: on */
 308        FB_BLANK_UNBLANK       = VESA_NO_BLANKING,
 309
 310        /* screen: blanked,   hsync: on,  vsync: on */
 311        FB_BLANK_NORMAL        = VESA_NO_BLANKING + 1,
 312
 313        /* screen: blanked,   hsync: on,  vsync: off */
 314        FB_BLANK_VSYNC_SUSPEND = VESA_VSYNC_SUSPEND + 1,
 315
 316        /* screen: blanked,   hsync: off, vsync: on */
 317        FB_BLANK_HSYNC_SUSPEND = VESA_HSYNC_SUSPEND + 1,
 318
 319        /* screen: blanked,   hsync: off, vsync: off */
 320        FB_BLANK_POWERDOWN     = VESA_POWERDOWN + 1
 321};
 322
 323#define FB_VBLANK_VBLANKING     0x001   /* currently in a vertical blank */
 324#define FB_VBLANK_HBLANKING     0x002   /* currently in a horizontal blank */
 325#define FB_VBLANK_HAVE_VBLANK   0x004   /* vertical blanks can be detected */
 326#define FB_VBLANK_HAVE_HBLANK   0x008   /* horizontal blanks can be detected */
 327#define FB_VBLANK_HAVE_COUNT    0x010   /* global retrace counter is available */
 328#define FB_VBLANK_HAVE_VCOUNT   0x020   /* the vcount field is valid */
 329#define FB_VBLANK_HAVE_HCOUNT   0x040   /* the hcount field is valid */
 330#define FB_VBLANK_VSYNCING      0x080   /* currently in a vsync */
 331#define FB_VBLANK_HAVE_VSYNC    0x100   /* verical syncs can be detected */
 332
 333struct fb_vblank {
 334        __u32 flags;                    /* FB_VBLANK flags */
 335        __u32 count;                    /* counter of retraces since boot */
 336        __u32 vcount;                   /* current scanline position */
 337        __u32 hcount;                   /* current scandot position */
 338        __u32 reserved[4];              /* reserved for future compatibility */
 339};
 340
 341/* Internal HW accel */
 342#define ROP_COPY 0
 343#define ROP_XOR  1
 344
 345struct fb_copyarea {
 346        __u32 dx;
 347        __u32 dy;
 348        __u32 width;
 349        __u32 height;
 350        __u32 sx;
 351        __u32 sy;
 352};
 353
 354struct fb_fillrect {
 355        __u32 dx;       /* screen-relative */
 356        __u32 dy;
 357        __u32 width;
 358        __u32 height;
 359        __u32 color;
 360        __u32 rop;
 361};
 362
 363struct fb_image {
 364        __u32 dx;               /* Where to place image */
 365        __u32 dy;
 366        __u32 width;            /* Size of image */
 367        __u32 height;
 368        __u32 fg_color;         /* Only used when a mono bitmap */
 369        __u32 bg_color;
 370        __u8  depth;            /* Depth of the image */
 371        const char *data;       /* Pointer to image data */
 372        struct fb_cmap cmap;    /* color map info */
 373};
 374
 375/*
 376 * hardware cursor control
 377 */
 378
 379#define FB_CUR_SETIMAGE 0x01
 380#define FB_CUR_SETPOS   0x02
 381#define FB_CUR_SETHOT   0x04
 382#define FB_CUR_SETCMAP  0x08
 383#define FB_CUR_SETSHAPE 0x10
 384#define FB_CUR_SETSIZE  0x20
 385#define FB_CUR_SETALL   0xFF
 386
 387struct fbcurpos {
 388        __u16 x, y;
 389};
 390
 391struct fb_cursor {
 392        __u16 set;              /* what to set */
 393        __u16 enable;           /* cursor on/off */
 394        __u16 rop;              /* bitop operation */
 395        const char *mask;       /* cursor mask bits */
 396        struct fbcurpos hot;    /* cursor hot spot */
 397        struct fb_image image;  /* Cursor image */
 398};
 399
 400#ifdef CONFIG_FB_BACKLIGHT
 401/* Settings for the generic backlight code */
 402#define FB_BACKLIGHT_LEVELS     128
 403#define FB_BACKLIGHT_MAX        0xFF
 404#endif
 405
 406#ifdef __KERNEL__
 407
 408#include <linux/fs.h>
 409#include <linux/init.h>
 410#include <linux/workqueue.h>
 411#include <linux/notifier.h>
 412#include <linux/list.h>
 413#include <linux/backlight.h>
 414#include <linux/slab.h>
 415#include <asm/io.h>
 416
 417struct vm_area_struct;
 418struct fb_info;
 419struct device;
 420struct file;
 421
 422/* Definitions below are used in the parsed monitor specs */
 423#define FB_DPMS_ACTIVE_OFF      1
 424#define FB_DPMS_SUSPEND         2
 425#define FB_DPMS_STANDBY         4
 426
 427#define FB_DISP_DDI             1
 428#define FB_DISP_ANA_700_300     2
 429#define FB_DISP_ANA_714_286     4
 430#define FB_DISP_ANA_1000_400    8
 431#define FB_DISP_ANA_700_000     16
 432
 433#define FB_DISP_MONO            32
 434#define FB_DISP_RGB             64
 435#define FB_DISP_MULTI           128
 436#define FB_DISP_UNKNOWN         256
 437
 438#define FB_SIGNAL_NONE          0
 439#define FB_SIGNAL_BLANK_BLANK   1
 440#define FB_SIGNAL_SEPARATE      2
 441#define FB_SIGNAL_COMPOSITE     4
 442#define FB_SIGNAL_SYNC_ON_GREEN 8
 443#define FB_SIGNAL_SERRATION_ON  16
 444
 445#define FB_MISC_PRIM_COLOR      1
 446#define FB_MISC_1ST_DETAIL      2       /* First Detailed Timing is preferred */
 447struct fb_chroma {
 448        __u32 redx;     /* in fraction of 1024 */
 449        __u32 greenx;
 450        __u32 bluex;
 451        __u32 whitex;
 452        __u32 redy;
 453        __u32 greeny;
 454        __u32 bluey;
 455        __u32 whitey;
 456};
 457
 458struct fb_monspecs {
 459        struct fb_chroma chroma;
 460        struct fb_videomode *modedb;    /* mode database */
 461        __u8  manufacturer[4];          /* Manufacturer */
 462        __u8  monitor[14];              /* Monitor String */
 463        __u8  serial_no[14];            /* Serial Number */
 464        __u8  ascii[14];                /* ? */
 465        __u32 modedb_len;               /* mode database length */
 466        __u32 model;                    /* Monitor Model */
 467        __u32 serial;                   /* Serial Number - Integer */
 468        __u32 year;                     /* Year manufactured */
 469        __u32 week;                     /* Week Manufactured */
 470        __u32 hfmin;                    /* hfreq lower limit (Hz) */
 471        __u32 hfmax;                    /* hfreq upper limit (Hz) */
 472        __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
 473        __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
 474        __u16 input;                    /* display type - see FB_DISP_* */
 475        __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
 476        __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
 477        __u16 vfmin;                    /* vfreq lower limit (Hz) */
 478        __u16 vfmax;                    /* vfreq upper limit (Hz) */
 479        __u16 gamma;                    /* Gamma - in fractions of 100 */
 480        __u16 gtf       : 1;            /* supports GTF */
 481        __u16 misc;                     /* Misc flags - see FB_MISC_* */
 482        __u8  version;                  /* EDID version... */
 483        __u8  revision;                 /* ...and revision */
 484        __u8  max_x;                    /* Maximum horizontal size (cm) */
 485        __u8  max_y;                    /* Maximum vertical size (cm) */
 486};
 487
 488struct fb_cmap_user {
 489        __u32 start;                    /* First entry  */
 490        __u32 len;                      /* Number of entries */
 491        __u16 __user *red;              /* Red values   */
 492        __u16 __user *green;
 493        __u16 __user *blue;
 494        __u16 __user *transp;           /* transparency, can be NULL */
 495};
 496
 497struct fb_image_user {
 498        __u32 dx;                       /* Where to place image */
 499        __u32 dy;
 500        __u32 width;                    /* Size of image */
 501        __u32 height;
 502        __u32 fg_color;                 /* Only used when a mono bitmap */
 503        __u32 bg_color;
 504        __u8  depth;                    /* Depth of the image */
 505        const char __user *data;        /* Pointer to image data */
 506        struct fb_cmap_user cmap;       /* color map info */
 507};
 508
 509struct fb_cursor_user {
 510        __u16 set;                      /* what to set */
 511        __u16 enable;                   /* cursor on/off */
 512        __u16 rop;                      /* bitop operation */
 513        const char __user *mask;        /* cursor mask bits */
 514        struct fbcurpos hot;            /* cursor hot spot */
 515        struct fb_image_user image;     /* Cursor image */
 516};
 517
 518/*
 519 * Register/unregister for framebuffer events
 520 */
 521
 522/*      The resolution of the passed in fb_info about to change */ 
 523#define FB_EVENT_MODE_CHANGE            0x01
 524/*      The display on this fb_info is beeing suspended, no access to the
 525 *      framebuffer is allowed any more after that call returns
 526 */
 527#define FB_EVENT_SUSPEND                0x02
 528/*      The display on this fb_info was resumed, you can restore the display
 529 *      if you own it
 530 */
 531#define FB_EVENT_RESUME                 0x03
 532/*      An entry from the modelist was removed */
 533#define FB_EVENT_MODE_DELETE            0x04
 534/*      A driver registered itself */
 535#define FB_EVENT_FB_REGISTERED          0x05
 536/*      A driver unregistered itself */
 537#define FB_EVENT_FB_UNREGISTERED        0x06
 538/*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
 539#define FB_EVENT_GET_CONSOLE_MAP        0x07
 540/*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
 541#define FB_EVENT_SET_CONSOLE_MAP        0x08
 542/*      A hardware display blank change occurred */
 543#define FB_EVENT_BLANK                  0x09
 544/*      Private modelist is to be replaced */
 545#define FB_EVENT_NEW_MODELIST           0x0A
 546/*      The resolution of the passed in fb_info about to change and
 547        all vc's should be changed         */
 548#define FB_EVENT_MODE_CHANGE_ALL        0x0B
 549/*      A software display blank change occurred */
 550#define FB_EVENT_CONBLANK               0x0C
 551/*      Get drawing requirements        */
 552#define FB_EVENT_GET_REQ                0x0D
 553/*      Unbind from the console if possible */
 554#define FB_EVENT_FB_UNBIND              0x0E
 555/*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
 556#define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
 557/*      A hardware display blank early change occured */
 558#define FB_EARLY_EVENT_BLANK            0x10
 559/*      A hardware display blank revert early change occured */
 560#define FB_R_EARLY_EVENT_BLANK          0x11
 561
 562struct fb_event {
 563        struct fb_info *info;
 564        void *data;
 565};
 566
 567struct fb_blit_caps {
 568        u32 x;
 569        u32 y;
 570        u32 len;
 571        u32 flags;
 572};
 573
 574extern int fb_register_client(struct notifier_block *nb);
 575extern int fb_unregister_client(struct notifier_block *nb);
 576extern int fb_notifier_call_chain(unsigned long val, void *v);
 577/*
 578 * Pixmap structure definition
 579 *
 580 * The purpose of this structure is to translate data
 581 * from the hardware independent format of fbdev to what
 582 * format the hardware needs.
 583 */
 584
 585#define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
 586#define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
 587#define FB_PIXMAP_IO      4     /* memory is iomapped       */
 588#define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
 589
 590struct fb_pixmap {
 591        u8  *addr;              /* pointer to memory                    */
 592        u32 size;               /* size of buffer in bytes              */
 593        u32 offset;             /* current offset to buffer             */
 594        u32 buf_align;          /* byte alignment of each bitmap        */
 595        u32 scan_align;         /* alignment per scanline               */
 596        u32 access_align;       /* alignment per read/write (bits)      */
 597        u32 flags;              /* see FB_PIXMAP_*                      */
 598        u32 blit_x;             /* supported bit block dimensions (1-32)*/
 599        u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
 600                                /*         blit_y = 1 << (height - 1)   */
 601                                /* if 0, will be set to 0xffffffff (all)*/
 602        /* access methods */
 603        void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
 604        void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
 605};
 606
 607#ifdef CONFIG_FB_DEFERRED_IO
 608struct fb_deferred_io {
 609        /* delay between mkwrite and deferred handler */
 610        unsigned long delay;
 611        struct mutex lock; /* mutex that protects the page list */
 612        struct list_head pagelist; /* list of touched pages */
 613        /* callback */
 614        void (*first_io)(struct fb_info *info);
 615        void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
 616};
 617#endif
 618
 619/*
 620 * Frame buffer operations
 621 *
 622 * LOCKING NOTE: those functions must _ALL_ be called with the console
 623 * semaphore held, this is the only suitable locking mechanism we have
 624 * in 2.6. Some may be called at interrupt time at this point though.
 625 *
 626 * The exception to this is the debug related hooks.  Putting the fb
 627 * into a debug state (e.g. flipping to the kernel console) and restoring
 628 * it must be done in a lock-free manner, so low level drivers should
 629 * keep track of the initial console (if applicable) and may need to
 630 * perform direct, unlocked hardware writes in these hooks.
 631 */
 632
 633struct fb_ops {
 634        /* open/release and usage marking */
 635        struct module *owner;
 636        int (*fb_open)(struct fb_info *info, int user);
 637        int (*fb_release)(struct fb_info *info, int user);
 638
 639        /* For framebuffers with strange non linear layouts or that do not
 640         * work with normal memory mapped access
 641         */
 642        ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
 643                           size_t count, loff_t *ppos);
 644        ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
 645                            size_t count, loff_t *ppos);
 646
 647        /* checks var and eventually tweaks it to something supported,
 648         * DO NOT MODIFY PAR */
 649        int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
 650
 651        /* set the video mode according to info->var */
 652        int (*fb_set_par)(struct fb_info *info);
 653
 654        /* set color register */
 655        int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
 656                            unsigned blue, unsigned transp, struct fb_info *info);
 657
 658        /* set color registers in batch */
 659        int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
 660
 661        /* blank display */
 662        int (*fb_blank)(int blank, struct fb_info *info);
 663
 664        /* pan display */
 665        int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
 666
 667        /* Draws a rectangle */
 668        void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
 669        /* Copy data from area to another */
 670        void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
 671        /* Draws a image to the display */
 672        void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
 673
 674        /* Draws cursor */
 675        int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
 676
 677        /* Rotates the display */
 678        void (*fb_rotate)(struct fb_info *info, int angle);
 679
 680        /* wait for blit idle, optional */
 681        int (*fb_sync)(struct fb_info *info);
 682
 683        /* perform fb specific ioctl (optional) */
 684        int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
 685                        unsigned long arg);
 686
 687        /* Handle 32bit compat ioctl (optional) */
 688        int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
 689                        unsigned long arg);
 690
 691        /* perform fb specific mmap */
 692        int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
 693
 694        /* get capability given var */
 695        void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
 696                            struct fb_var_screeninfo *var);
 697
 698        /* teardown any resources to do with this framebuffer */
 699        void (*fb_destroy)(struct fb_info *info);
 700
 701        /* called at KDB enter and leave time to prepare the console */
 702        int (*fb_debug_enter)(struct fb_info *info);
 703        int (*fb_debug_leave)(struct fb_info *info);
 704};
 705
 706#ifdef CONFIG_FB_TILEBLITTING
 707#define FB_TILE_CURSOR_NONE        0
 708#define FB_TILE_CURSOR_UNDERLINE   1
 709#define FB_TILE_CURSOR_LOWER_THIRD 2
 710#define FB_TILE_CURSOR_LOWER_HALF  3
 711#define FB_TILE_CURSOR_TWO_THIRDS  4
 712#define FB_TILE_CURSOR_BLOCK       5
 713
 714struct fb_tilemap {
 715        __u32 width;                /* width of each tile in pixels */
 716        __u32 height;               /* height of each tile in scanlines */
 717        __u32 depth;                /* color depth of each tile */
 718        __u32 length;               /* number of tiles in the map */
 719        const __u8 *data;           /* actual tile map: a bitmap array, packed
 720                                       to the nearest byte */
 721};
 722
 723struct fb_tilerect {
 724        __u32 sx;                   /* origin in the x-axis */
 725        __u32 sy;                   /* origin in the y-axis */
 726        __u32 width;                /* number of tiles in the x-axis */
 727        __u32 height;               /* number of tiles in the y-axis */
 728        __u32 index;                /* what tile to use: index to tile map */
 729        __u32 fg;                   /* foreground color */
 730        __u32 bg;                   /* background color */
 731        __u32 rop;                  /* raster operation */
 732};
 733
 734struct fb_tilearea {
 735        __u32 sx;                   /* source origin in the x-axis */
 736        __u32 sy;                   /* source origin in the y-axis */
 737        __u32 dx;                   /* destination origin in the x-axis */
 738        __u32 dy;                   /* destination origin in the y-axis */
 739        __u32 width;                /* number of tiles in the x-axis */
 740        __u32 height;               /* number of tiles in the y-axis */
 741};
 742
 743struct fb_tileblit {
 744        __u32 sx;                   /* origin in the x-axis */
 745        __u32 sy;                   /* origin in the y-axis */
 746        __u32 width;                /* number of tiles in the x-axis */
 747        __u32 height;               /* number of tiles in the y-axis */
 748        __u32 fg;                   /* foreground color */
 749        __u32 bg;                   /* background color */
 750        __u32 length;               /* number of tiles to draw */
 751        __u32 *indices;             /* array of indices to tile map */
 752};
 753
 754struct fb_tilecursor {
 755        __u32 sx;                   /* cursor position in the x-axis */
 756        __u32 sy;                   /* cursor position in the y-axis */
 757        __u32 mode;                 /* 0 = erase, 1 = draw */
 758        __u32 shape;                /* see FB_TILE_CURSOR_* */
 759        __u32 fg;                   /* foreground color */
 760        __u32 bg;                   /* background color */
 761};
 762
 763struct fb_tile_ops {
 764        /* set tile characteristics */
 765        void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
 766
 767        /* all dimensions from hereon are in terms of tiles */
 768
 769        /* move a rectangular region of tiles from one area to another*/
 770        void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
 771        /* fill a rectangular region with a tile */
 772        void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
 773        /* copy an array of tiles */
 774        void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
 775        /* cursor */
 776        void (*fb_tilecursor)(struct fb_info *info,
 777                              struct fb_tilecursor *cursor);
 778        /* get maximum length of the tile map */
 779        int (*fb_get_tilemax)(struct fb_info *info);
 780};
 781#endif /* CONFIG_FB_TILEBLITTING */
 782
 783/* FBINFO_* = fb_info.flags bit flags */
 784#define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
 785#define FBINFO_HWACCEL_DISABLED 0x0002
 786        /* When FBINFO_HWACCEL_DISABLED is set:
 787         *  Hardware acceleration is turned off.  Software implementations
 788         *  of required functions (copyarea(), fillrect(), and imageblit())
 789         *  takes over; acceleration engine should be in a quiescent state */
 790
 791/* hints */
 792#define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
 793#define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
 794#define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
 795
 796/* hardware supported ops */
 797/*  semantics: when a bit is set, it indicates that the operation is
 798 *   accelerated by hardware.
 799 *  required functions will still work even if the bit is not set.
 800 *  optional functions may not even exist if the flag bit is not set.
 801 */
 802#define FBINFO_HWACCEL_NONE             0x0000
 803#define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
 804#define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
 805#define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
 806#define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
 807#define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
 808#define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
 809#define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
 810
 811#define FBINFO_MISC_USEREVENT          0x10000 /* event request
 812                                                  from userspace */
 813#define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
 814
 815/* A driver may set this flag to indicate that it does want a set_par to be
 816 * called every time when fbcon_switch is executed. The advantage is that with
 817 * this flag set you can really be sure that set_par is always called before
 818 * any of the functions dependent on the correct hardware state or altering
 819 * that state, even if you are using some broken X releases. The disadvantage
 820 * is that it introduces unwanted delays to every console switch if set_par
 821 * is slow. It is a good idea to try this flag in the drivers initialization
 822 * code whenever there is a bug report related to switching between X and the
 823 * framebuffer console.
 824 */
 825#define FBINFO_MISC_ALWAYS_SETPAR   0x40000
 826
 827/* where the fb is a firmware driver, and can be replaced with a proper one */
 828#define FBINFO_MISC_FIRMWARE        0x80000
 829/*
 830 * Host and GPU endianness differ.
 831 */
 832#define FBINFO_FOREIGN_ENDIAN   0x100000
 833/*
 834 * Big endian math. This is the same flags as above, but with different
 835 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
 836 * and host endianness. Drivers should not use this flag.
 837 */
 838#define FBINFO_BE_MATH  0x100000
 839
 840/* report to the VT layer that this fb driver can accept forced console
 841   output like oopses */
 842#define FBINFO_CAN_FORCE_OUTPUT     0x200000
 843
 844struct fb_info {
 845        atomic_t count;
 846        int node;
 847        int flags;
 848        struct mutex lock;              /* Lock for open/release/ioctl funcs */
 849        struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
 850        struct fb_var_screeninfo var;   /* Current var */
 851        struct fb_fix_screeninfo fix;   /* Current fix */
 852        struct fb_monspecs monspecs;    /* Current Monitor specs */
 853        struct work_struct queue;       /* Framebuffer event queue */
 854        struct fb_pixmap pixmap;        /* Image hardware mapper */
 855        struct fb_pixmap sprite;        /* Cursor hardware mapper */
 856        struct fb_cmap cmap;            /* Current cmap */
 857        struct list_head modelist;      /* mode list */
 858        struct fb_videomode *mode;      /* current mode */
 859
 860#ifdef CONFIG_FB_BACKLIGHT
 861        /* assigned backlight device */
 862        /* set before framebuffer registration, 
 863           remove after unregister */
 864        struct backlight_device *bl_dev;
 865
 866        /* Backlight level curve */
 867        struct mutex bl_curve_mutex;    
 868        u8 bl_curve[FB_BACKLIGHT_LEVELS];
 869#endif
 870#ifdef CONFIG_FB_DEFERRED_IO
 871        struct delayed_work deferred_work;
 872        struct fb_deferred_io *fbdefio;
 873#endif
 874
 875        struct fb_ops *fbops;
 876        struct device *device;          /* This is the parent */
 877        struct device *dev;             /* This is this fb device */
 878        int class_flag;                    /* private sysfs flags */
 879#ifdef CONFIG_FB_TILEBLITTING
 880        struct fb_tile_ops *tileops;    /* Tile Blitting */
 881#endif
 882        char __iomem *screen_base;      /* Virtual address */
 883        unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */ 
 884        void *pseudo_palette;           /* Fake palette of 16 colors */ 
 885#define FBINFO_STATE_RUNNING    0
 886#define FBINFO_STATE_SUSPENDED  1
 887        u32 state;                      /* Hardware state i.e suspend */
 888        void *fbcon_par;                /* fbcon use-only private area */
 889        /* From here on everything is device dependent */
 890        void *par;
 891        /* we need the PCI or similar aperture base/size not
 892           smem_start/size as smem_start may just be an object
 893           allocated inside the aperture so may not actually overlap */
 894        struct apertures_struct {
 895                unsigned int count;
 896                struct aperture {
 897                        resource_size_t base;
 898                        resource_size_t size;
 899                } ranges[0];
 900        } *apertures;
 901};
 902
 903static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
 904        struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
 905                        + max_num * sizeof(struct aperture), GFP_KERNEL);
 906        if (!a)
 907                return NULL;
 908        a->count = max_num;
 909        return a;
 910}
 911
 912#ifdef MODULE
 913#define FBINFO_DEFAULT  FBINFO_MODULE
 914#else
 915#define FBINFO_DEFAULT  0
 916#endif
 917
 918// This will go away
 919#define FBINFO_FLAG_MODULE      FBINFO_MODULE
 920#define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
 921
 922/* This will go away
 923 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 924 * when it wants to turn the acceleration engine on.  This is
 925 * really a separate operation, and should be modified via sysfs.
 926 *  But for now, we leave it broken with the following define
 927 */
 928#define STUPID_ACCELF_TEXT_SHIT
 929
 930// This will go away
 931#if defined(__sparc__)
 932
 933/* We map all of our framebuffers such that big-endian accesses
 934 * are what we want, so the following is sufficient.
 935 */
 936
 937// This will go away
 938#define fb_readb sbus_readb
 939#define fb_readw sbus_readw
 940#define fb_readl sbus_readl
 941#define fb_readq sbus_readq
 942#define fb_writeb sbus_writeb
 943#define fb_writew sbus_writew
 944#define fb_writel sbus_writel
 945#define fb_writeq sbus_writeq
 946#define fb_memset sbus_memset_io
 947#define fb_memcpy_fromfb sbus_memcpy_fromio
 948#define fb_memcpy_tofb sbus_memcpy_toio
 949
 950#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
 951
 952#define fb_readb __raw_readb
 953#define fb_readw __raw_readw
 954#define fb_readl __raw_readl
 955#define fb_readq __raw_readq
 956#define fb_writeb __raw_writeb
 957#define fb_writew __raw_writew
 958#define fb_writel __raw_writel
 959#define fb_writeq __raw_writeq
 960#define fb_memset memset_io
 961#define fb_memcpy_fromfb memcpy_fromio
 962#define fb_memcpy_tofb memcpy_toio
 963
 964#else
 965
 966#define fb_readb(addr) (*(volatile u8 *) (addr))
 967#define fb_readw(addr) (*(volatile u16 *) (addr))
 968#define fb_readl(addr) (*(volatile u32 *) (addr))
 969#define fb_readq(addr) (*(volatile u64 *) (addr))
 970#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
 971#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
 972#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
 973#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
 974#define fb_memset memset
 975#define fb_memcpy_fromfb memcpy
 976#define fb_memcpy_tofb memcpy
 977
 978#endif
 979
 980#define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
 981#define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
 982                                                      (val) << (bits))
 983#define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
 984                                                      (val) >> (bits))
 985
 986    /*
 987     *  `Generic' versions of the frame buffer device operations
 988     */
 989
 990extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
 991extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
 992extern int fb_blank(struct fb_info *info, int blank);
 993extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
 994extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
 995extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 996/*
 997 * Drawing operations where framebuffer is in system RAM
 998 */
 999extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
1000extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);

1001extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
1002extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
1003                           size_t count, loff_t *ppos);
1004extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
1005                            size_t count, loff_t *ppos);
1006
1007/* drivers/video/fbmem.c */
1008extern int register_framebuffer(struct fb_info *fb_info);
1009extern int unregister_framebuffer(struct fb_info *fb_info);
1010extern int unlink_framebuffer(struct fb_info *fb_info);
1011extern void remove_conflicting_framebuffers(struct apertures_struct *a,
1012                                const char *name, bool primary);
1013extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
1014extern int fb_show_logo(struct fb_info *fb_info, int rotate);
1015extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
1016extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
1017                                u32 height, u32 shift_high, u32 shift_low, u32 mod);
1018extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
1019extern void fb_set_suspend(struct fb_info *info, int state);
1020extern int fb_get_color_depth(struct fb_var_screeninfo *var,
1021                              struct fb_fix_screeninfo *fix);
1022extern int fb_get_options(char *name, char **option);
1023extern int fb_new_modelist(struct fb_info *info);
1024
1025extern struct fb_info *registered_fb[FB_MAX];
1026extern int num_registered_fb;
1027extern struct class *fb_class;
1028
1029extern int lock_fb_info(struct fb_info *info);
1030
1031static inline void unlock_fb_info(struct fb_info *info)
1032{
1033        mutex_unlock(&info->lock);
1034}
1035
1036static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
1037                                           u8 *src, u32 s_pitch, u32 height)
1038{
1039        int i, j;
1040
1041        d_pitch -= s_pitch;
1042
1043        for (i = height; i--; ) {
1044                /* s_pitch is a few bytes at the most, memcpy is suboptimal */
1045                for (j = 0; j < s_pitch; j++)
1046                        *dst++ = *src++;
1047                dst += d_pitch;
1048        }
1049}
1050
1051/* drivers/video/fb_defio.c */
1052extern void fb_deferred_io_init(struct fb_info *info);
1053extern void fb_deferred_io_open(struct fb_info *info,
1054                                struct inode *inode,
1055                                struct file *file);
1056extern void fb_deferred_io_cleanup(struct fb_info *info);
1057extern int fb_deferred_io_fsync(struct file *file, loff_t start,
1058                                loff_t end, int datasync);
1059
1060static inline bool fb_be_math(struct fb_info *info)
1061{
1062#ifdef CONFIG_FB_FOREIGN_ENDIAN
1063#if defined(CONFIG_FB_BOTH_ENDIAN)
1064        return info->flags & FBINFO_BE_MATH;
1065#elif defined(CONFIG_FB_BIG_ENDIAN)
1066        return true;
1067#elif defined(CONFIG_FB_LITTLE_ENDIAN)
1068        return false;
1069#endif /* CONFIG_FB_BOTH_ENDIAN */
1070#else
1071#ifdef __BIG_ENDIAN
1072        return true;
1073#else
1074        return false;
1075#endif /* __BIG_ENDIAN */
1076#endif /* CONFIG_FB_FOREIGN_ENDIAN */
1077}
1078
1079/* drivers/video/fbsysfs.c */
1080extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
1081extern void framebuffer_release(struct fb_info *info);
1082extern int fb_init_device(struct fb_info *fb_info);
1083extern void fb_cleanup_device(struct fb_info *head);
1084extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
1085
1086/* drivers/video/fbmon.c */
1087#define FB_MAXTIMINGS           0
1088#define FB_VSYNCTIMINGS         1
1089#define FB_HSYNCTIMINGS         2
1090#define FB_DCLKTIMINGS          3
1091#define FB_IGNOREMON            0x100
1092
1093#define FB_MODE_IS_UNKNOWN      0
1094#define FB_MODE_IS_DETAILED     1
1095#define FB_MODE_IS_STANDARD     2
1096#define FB_MODE_IS_VESA         4
1097#define FB_MODE_IS_CALCULATED   8
1098#define FB_MODE_IS_FIRST        16
1099#define FB_MODE_IS_FROM_VAR     32
1100
1101extern int fbmon_dpms(const struct fb_info *fb_info);
1102extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
1103                       struct fb_info *info);
1104extern int fb_validate_mode(const struct fb_var_screeninfo *var,
1105                            struct fb_info *info);
1106extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
1107extern const unsigned char *fb_firmware_edid(struct device *device);
1108extern void fb_edid_to_monspecs(unsigned char *edid,
1109                                struct fb_monspecs *specs);
1110extern void fb_edid_add_monspecs(unsigned char *edid,
1111                                 struct fb_monspecs *specs);
1112extern void fb_destroy_modedb(struct fb_videomode *modedb);
1113extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
1114extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
1115
1116/* drivers/video/modedb.c */
1117#define VESA_MODEDB_SIZE 34
1118extern void fb_var_to_videomode(struct fb_videomode *mode,
1119                                const struct fb_var_screeninfo *var);
1120extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
1121                                const struct fb_videomode *mode);
1122extern int fb_mode_is_equal(const struct fb_videomode *mode1,
1123                            const struct fb_videomode *mode2);
1124extern int fb_add_videomode(const struct fb_videomode *mode,
1125                            struct list_head *head);
1126extern void fb_delete_videomode(const struct fb_videomode *mode,
1127                                struct list_head *head);
1128extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
1129                                                struct list_head *head);
1130extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
1131                                                    struct list_head *head);
1132extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
1133                                                       struct list_head *head);
1134extern void fb_destroy_modelist(struct list_head *head);
1135extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
1136                                     struct list_head *head);
1137extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1138                                                       struct list_head *head);
1139
1140/* drivers/video/fbcmap.c */
1141extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
1142extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
1143extern void fb_dealloc_cmap(struct fb_cmap *cmap);
1144extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
1145extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
1146extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
1147extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
1148extern const struct fb_cmap *fb_default_cmap(int len);
1149extern void fb_invert_cmaps(void);
1150
1151struct fb_videomode {
1152        const char *name;       /* optional */
1153        u32 refresh;            /* optional */
1154        u32 xres;
1155        u32 yres;
1156        u32 pixclock;
1157        u32 left_margin;
1158        u32 right_margin;
1159        u32 upper_margin;
1160        u32 lower_margin;
1161        u32 hsync_len;
1162        u32 vsync_len;
1163        u32 sync;
1164        u32 vmode;
1165        u32 flag;
1166};
1167
1168extern const char *fb_mode_option;
1169extern const struct fb_videomode vesa_modes[];
1170extern const struct fb_videomode cea_modes[64];
1171
1172struct fb_modelist {
1173        struct list_head list;
1174        struct fb_videomode mode;
1175};
1176
1177extern int fb_find_mode(struct fb_var_screeninfo *var,
1178                        struct fb_info *info, const char *mode_option,
1179                        const struct fb_videomode *db,
1180                        unsigned int dbsize,
1181                        const struct fb_videomode *default_mode,
1182                        unsigned int default_bpp);
1183
1184#endif /* __KERNEL__ */
1185
1186#endif /* _LINUX_FB_H */
1187