LXR linux/include/linux/fb.h

   1#ifndef _LINUX_FB_H
   2#define _LINUX_FB_H
   3
   4#include <linux/kgdb.h>
   5#include <uapi/linux/fb.h>
   6
   7#define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor_user)
   8
   9#include <linux/fs.h>
  10#include <linux/init.h>
  11#include <linux/workqueue.h>
  12#include <linux/notifier.h>
  13#include <linux/list.h>
  14#include <linux/backlight.h>
  15#include <linux/slab.h>
  16#include <asm/io.h>
  17
  18struct vm_area_struct;
  19struct fb_info;
  20struct device;
  21struct file;
  22
  23/* Definitions below are used in the parsed monitor specs */
  24#define FB_DPMS_ACTIVE_OFF      1
  25#define FB_DPMS_SUSPEND         2
  26#define FB_DPMS_STANDBY         4
  27
  28#define FB_DISP_DDI             1
  29#define FB_DISP_ANA_700_300     2
  30#define FB_DISP_ANA_714_286     4
  31#define FB_DISP_ANA_1000_400    8
  32#define FB_DISP_ANA_700_000     16
  33
  34#define FB_DISP_MONO            32
  35#define FB_DISP_RGB             64
  36#define FB_DISP_MULTI           128
  37#define FB_DISP_UNKNOWN         256
  38
  39#define FB_SIGNAL_NONE          0
  40#define FB_SIGNAL_BLANK_BLANK   1
  41#define FB_SIGNAL_SEPARATE      2
  42#define FB_SIGNAL_COMPOSITE     4
  43#define FB_SIGNAL_SYNC_ON_GREEN 8
  44#define FB_SIGNAL_SERRATION_ON  16
  45
  46#define FB_MISC_PRIM_COLOR      1
  47#define FB_MISC_1ST_DETAIL      2       /* First Detailed Timing is preferred */
  48struct fb_chroma {
  49        __u32 redx;     /* in fraction of 1024 */
  50        __u32 greenx;
  51        __u32 bluex;
  52        __u32 whitex;
  53        __u32 redy;
  54        __u32 greeny;
  55        __u32 bluey;
  56        __u32 whitey;
  57};
  58
  59struct fb_monspecs {
  60        struct fb_chroma chroma;
  61        struct fb_videomode *modedb;    /* mode database */
  62        __u8  manufacturer[4];          /* Manufacturer */
  63        __u8  monitor[14];              /* Monitor String */
  64        __u8  serial_no[14];            /* Serial Number */
  65        __u8  ascii[14];                /* ? */
  66        __u32 modedb_len;               /* mode database length */
  67        __u32 model;                    /* Monitor Model */
  68        __u32 serial;                   /* Serial Number - Integer */
  69        __u32 year;                     /* Year manufactured */
  70        __u32 week;                     /* Week Manufactured */
  71        __u32 hfmin;                    /* hfreq lower limit (Hz) */
  72        __u32 hfmax;                    /* hfreq upper limit (Hz) */
  73        __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
  74        __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
  75        __u16 input;                    /* display type - see FB_DISP_* */
  76        __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
  77        __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
  78        __u16 vfmin;                    /* vfreq lower limit (Hz) */
  79        __u16 vfmax;                    /* vfreq upper limit (Hz) */
  80        __u16 gamma;                    /* Gamma - in fractions of 100 */
  81        __u16 gtf       : 1;            /* supports GTF */
  82        __u16 misc;                     /* Misc flags - see FB_MISC_* */
  83        __u8  version;                  /* EDID version... */
  84        __u8  revision;                 /* ...and revision */
  85        __u8  max_x;                    /* Maximum horizontal size (cm) */
  86        __u8  max_y;                    /* Maximum vertical size (cm) */
  87};
  88
  89struct fb_cmap_user {
  90        __u32 start;                    /* First entry  */
  91        __u32 len;                      /* Number of entries */
  92        __u16 __user *red;              /* Red values   */
  93        __u16 __user *green;
  94        __u16 __user *blue;
  95        __u16 __user *transp;           /* transparency, can be NULL */
  96};
  97
  98struct fb_image_user {
  99        __u32 dx;                       /* Where to place image */
 100        __u32 dy;
 101        __u32 width;                    /* Size of image */
 102        __u32 height;
 103        __u32 fg_color;                 /* Only used when a mono bitmap */
 104        __u32 bg_color;
 105        __u8  depth;                    /* Depth of the image */
 106        const char __user *data;        /* Pointer to image data */
 107        struct fb_cmap_user cmap;       /* color map info */
 108};
 109
 110struct fb_cursor_user {
 111        __u16 set;                      /* what to set */
 112        __u16 enable;                   /* cursor on/off */
 113        __u16 rop;                      /* bitop operation */
 114        const char __user *mask;        /* cursor mask bits */
 115        struct fbcurpos hot;            /* cursor hot spot */
 116        struct fb_image_user image;     /* Cursor image */
 117};
 118
 119/*
 120 * Register/unregister for framebuffer events
 121 */
 122
 123/*      The resolution of the passed in fb_info about to change */ 
 124#define FB_EVENT_MODE_CHANGE            0x01
 125/*      The display on this fb_info is beeing suspended, no access to the
 126 *      framebuffer is allowed any more after that call returns
 127 */
 128#define FB_EVENT_SUSPEND                0x02
 129/*      The display on this fb_info was resumed, you can restore the display
 130 *      if you own it
 131 */
 132#define FB_EVENT_RESUME                 0x03
 133/*      An entry from the modelist was removed */
 134#define FB_EVENT_MODE_DELETE            0x04
 135/*      A driver registered itself */
 136#define FB_EVENT_FB_REGISTERED          0x05
 137/*      A driver unregistered itself */
 138#define FB_EVENT_FB_UNREGISTERED        0x06
 139/*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
 140#define FB_EVENT_GET_CONSOLE_MAP        0x07
 141/*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
 142#define FB_EVENT_SET_CONSOLE_MAP        0x08
 143/*      A hardware display blank change occurred */
 144#define FB_EVENT_BLANK                  0x09
 145/*      Private modelist is to be replaced */
 146#define FB_EVENT_NEW_MODELIST           0x0A
 147/*      The resolution of the passed in fb_info about to change and
 148        all vc's should be changed         */
 149#define FB_EVENT_MODE_CHANGE_ALL        0x0B
 150/*      A software display blank change occurred */
 151#define FB_EVENT_CONBLANK               0x0C
 152/*      Get drawing requirements        */
 153#define FB_EVENT_GET_REQ                0x0D
 154/*      Unbind from the console if possible */
 155#define FB_EVENT_FB_UNBIND              0x0E
 156/*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
 157#define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
 158/*      A hardware display blank early change occured */
 159#define FB_EARLY_EVENT_BLANK            0x10
 160/*      A hardware display blank revert early change occured */
 161#define FB_R_EARLY_EVENT_BLANK          0x11
 162
 163struct fb_event {
 164        struct fb_info *info;
 165        void *data;
 166};
 167
 168struct fb_blit_caps {
 169        u32 x;
 170        u32 y;
 171        u32 len;
 172        u32 flags;
 173};
 174
 175extern int fb_register_client(struct notifier_block *nb);
 176extern int fb_unregister_client(struct notifier_block *nb);
 177extern int fb_notifier_call_chain(unsigned long val, void *v);
 178/*
 179 * Pixmap structure definition
 180 *
 181 * The purpose of this structure is to translate data
 182 * from the hardware independent format of fbdev to what
 183 * format the hardware needs.
 184 */
 185
 186#define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
 187#define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
 188#define FB_PIXMAP_IO      4     /* memory is iomapped       */
 189#define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
 190
 191struct fb_pixmap {
 192        u8  *addr;              /* pointer to memory                    */
 193        u32 size;               /* size of buffer in bytes              */
 194        u32 offset;             /* current offset to buffer             */
 195        u32 buf_align;          /* byte alignment of each bitmap        */
 196        u32 scan_align;         /* alignment per scanline               */
 197        u32 access_align;       /* alignment per read/write (bits)      */
 198        u32 flags;              /* see FB_PIXMAP_*                      */
 199        u32 blit_x;             /* supported bit block dimensions (1-32)*/
 200        u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
 201                                /*         blit_y = 1 << (height - 1)   */
 202                                /* if 0, will be set to 0xffffffff (all)*/
 203        /* access methods */
 204        void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
 205        void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
 206};
 207
 208#ifdef CONFIG_FB_DEFERRED_IO
 209struct fb_deferred_io {
 210        /* delay between mkwrite and deferred handler */
 211        unsigned long delay;
 212        struct mutex lock; /* mutex that protects the page list */
 213        struct list_head pagelist; /* list of touched pages */
 214        /* callback */
 215        void (*first_io)(struct fb_info *info);
 216        void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
 217};
 218#endif
 219
 220/*
 221 * Frame buffer operations
 222 *
 223 * LOCKING NOTE: those functions must _ALL_ be called with the console
 224 * semaphore held, this is the only suitable locking mechanism we have
 225 * in 2.6. Some may be called at interrupt time at this point though.
 226 *
 227 * The exception to this is the debug related hooks.  Putting the fb
 228 * into a debug state (e.g. flipping to the kernel console) and restoring
 229 * it must be done in a lock-free manner, so low level drivers should
 230 * keep track of the initial console (if applicable) and may need to
 231 * perform direct, unlocked hardware writes in these hooks.
 232 */
 233
 234struct fb_ops {
 235        /* open/release and usage marking */
 236        struct module *owner;
 237        int (*fb_open)(struct fb_info *info, int user);
 238        int (*fb_release)(struct fb_info *info, int user);
 239
 240        /* For framebuffers with strange non linear layouts or that do not
 241         * work with normal memory mapped access
 242         */
 243        ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
 244                           size_t count, loff_t *ppos);
 245        ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
 246                            size_t count, loff_t *ppos);
 247
 248        /* checks var and eventually tweaks it to something supported,
 249         * DO NOT MODIFY PAR */
 250        int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
 251
 252        /* set the video mode according to info->var */
 253        int (*fb_set_par)(struct fb_info *info);
 254
 255        /* set color register */
 256        int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
 257                            unsigned blue, unsigned transp, struct fb_info *info);
 258
 259        /* set color registers in batch */
 260        int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
 261
 262        /* blank display */
 263        int (*fb_blank)(int blank, struct fb_info *info);
 264
 265        /* pan display */
 266        int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
 267
 268        /* Draws a rectangle */
 269        void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
 270        /* Copy data from area to another */
 271        void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
 272        /* Draws a image to the display */
 273        void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
 274
 275        /* Draws cursor */
 276        int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
 277
 278        /* Rotates the display */
 279        void (*fb_rotate)(struct fb_info *info, int angle);
 280
 281        /* wait for blit idle, optional */
 282        int (*fb_sync)(struct fb_info *info);
 283
 284        /* perform fb specific ioctl (optional) */
 285        int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
 286                        unsigned long arg);
 287
 288        /* Handle 32bit compat ioctl (optional) */
 289        int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
 290                        unsigned long arg);
 291
 292        /* perform fb specific mmap */
 293        int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
 294
 295        /* get capability given var */
 296        void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
 297                            struct fb_var_screeninfo *var);
 298
 299        /* teardown any resources to do with this framebuffer */
 300        void (*fb_destroy)(struct fb_info *info);
 301
 302        /* called at KDB enter and leave time to prepare the console */
 303        int (*fb_debug_enter)(struct fb_info *info);
 304        int (*fb_debug_leave)(struct fb_info *info);
 305};
 306
 307#ifdef CONFIG_FB_TILEBLITTING
 308#define FB_TILE_CURSOR_NONE        0
 309#define FB_TILE_CURSOR_UNDERLINE   1
 310#define FB_TILE_CURSOR_LOWER_THIRD 2
 311#define FB_TILE_CURSOR_LOWER_HALF  3
 312#define FB_TILE_CURSOR_TWO_THIRDS  4
 313#define FB_TILE_CURSOR_BLOCK       5
 314
 315struct fb_tilemap {
 316        __u32 width;                /* width of each tile in pixels */
 317        __u32 height;               /* height of each tile in scanlines */
 318        __u32 depth;                /* color depth of each tile */
 319        __u32 length;               /* number of tiles in the map */
 320        const __u8 *data;           /* actual tile map: a bitmap array, packed
 321                                       to the nearest byte */
 322};
 323
 324struct fb_tilerect {
 325        __u32 sx;                   /* origin in the x-axis */
 326        __u32 sy;                   /* origin in the y-axis */
 327        __u32 width;                /* number of tiles in the x-axis */
 328        __u32 height;               /* number of tiles in the y-axis */
 329        __u32 index;                /* what tile to use: index to tile map */
 330        __u32 fg;                   /* foreground color */
 331        __u32 bg;                   /* background color */
 332        __u32 rop;                  /* raster operation */
 333};
 334
 335struct fb_tilearea {
 336        __u32 sx;                   /* source origin in the x-axis */
 337        __u32 sy;                   /* source origin in the y-axis */
 338        __u32 dx;                   /* destination origin in the x-axis */
 339        __u32 dy;                   /* destination origin in the y-axis */
 340        __u32 width;                /* number of tiles in the x-axis */
 341        __u32 height;               /* number of tiles in the y-axis */
 342};
 343
 344struct fb_tileblit {
 345        __u32 sx;                   /* origin in the x-axis */
 346        __u32 sy;                   /* origin in the y-axis */
 347        __u32 width;                /* number of tiles in the x-axis */
 348        __u32 height;               /* number of tiles in the y-axis */
 349        __u32 fg;                   /* foreground color */
 350        __u32 bg;                   /* background color */
 351        __u32 length;               /* number of tiles to draw */
 352        __u32 *indices;             /* array of indices to tile map */
 353};
 354
 355struct fb_tilecursor {
 356        __u32 sx;                   /* cursor position in the x-axis */
 357        __u32 sy;                   /* cursor position in the y-axis */
 358        __u32 mode;                 /* 0 = erase, 1 = draw */
 359        __u32 shape;                /* see FB_TILE_CURSOR_* */
 360        __u32 fg;                   /* foreground color */
 361        __u32 bg;                   /* background color */
 362};
 363
 364struct fb_tile_ops {
 365        /* set tile characteristics */
 366        void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
 367
 368        /* all dimensions from hereon are in terms of tiles */
 369
 370        /* move a rectangular region of tiles from one area to another*/
 371        void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
 372        /* fill a rectangular region with a tile */
 373        void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
 374        /* copy an array of tiles */
 375        void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
 376        /* cursor */
 377        void (*fb_tilecursor)(struct fb_info *info,
 378                              struct fb_tilecursor *cursor);
 379        /* get maximum length of the tile map */
 380        int (*fb_get_tilemax)(struct fb_info *info);
 381};
 382#endif /* CONFIG_FB_TILEBLITTING */
 383
 384/* FBINFO_* = fb_info.flags bit flags */
 385#define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
 386#define FBINFO_HWACCEL_DISABLED 0x0002
 387        /* When FBINFO_HWACCEL_DISABLED is set:
 388         *  Hardware acceleration is turned off.  Software implementations
 389         *  of required functions (copyarea(), fillrect(), and imageblit())
 390         *  takes over; acceleration engine should be in a quiescent state */
 391
 392/* hints */
 393#define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
 394#define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
 395#define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
 396
 397/* hardware supported ops */
 398/*  semantics: when a bit is set, it indicates that the operation is
 399 *   accelerated by hardware.
 400 *  required functions will still work even if the bit is not set.
 401 *  optional functions may not even exist if the flag bit is not set.
 402 */
 403#define FBINFO_HWACCEL_NONE             0x0000
 404#define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
 405#define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
 406#define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
 407#define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
 408#define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
 409#define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
 410#define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
 411
 412#define FBINFO_MISC_USEREVENT          0x10000 /* event request
 413                                                  from userspace */
 414#define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
 415
 416/* A driver may set this flag to indicate that it does want a set_par to be
 417 * called every time when fbcon_switch is executed. The advantage is that with
 418 * this flag set you can really be sure that set_par is always called before
 419 * any of the functions dependent on the correct hardware state or altering
 420 * that state, even if you are using some broken X releases. The disadvantage
 421 * is that it introduces unwanted delays to every console switch if set_par
 422 * is slow. It is a good idea to try this flag in the drivers initialization
 423 * code whenever there is a bug report related to switching between X and the
 424 * framebuffer console.
 425 */
 426#define FBINFO_MISC_ALWAYS_SETPAR   0x40000
 427
 428/* where the fb is a firmware driver, and can be replaced with a proper one */
 429#define FBINFO_MISC_FIRMWARE        0x80000
 430/*
 431 * Host and GPU endianness differ.
 432 */
 433#define FBINFO_FOREIGN_ENDIAN   0x100000
 434/*
 435 * Big endian math. This is the same flags as above, but with different
 436 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
 437 * and host endianness. Drivers should not use this flag.
 438 */
 439#define FBINFO_BE_MATH  0x100000
 440
 441/* report to the VT layer that this fb driver can accept forced console
 442   output like oopses */
 443#define FBINFO_CAN_FORCE_OUTPUT     0x200000
 444
 445struct fb_info {
 446        atomic_t count;
 447        int node;
 448        int flags;
 449        struct mutex lock;              /* Lock for open/release/ioctl funcs */
 450        struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
 451        struct fb_var_screeninfo var;   /* Current var */
 452        struct fb_fix_screeninfo fix;   /* Current fix */
 453        struct fb_monspecs monspecs;    /* Current Monitor specs */
 454        struct work_struct queue;       /* Framebuffer event queue */
 455        struct fb_pixmap pixmap;        /* Image hardware mapper */
 456        struct fb_pixmap sprite;        /* Cursor hardware mapper */
 457        struct fb_cmap cmap;            /* Current cmap */
 458        struct list_head modelist;      /* mode list */
 459        struct fb_videomode *mode;      /* current mode */
 460
 461#ifdef CONFIG_FB_BACKLIGHT
 462        /* assigned backlight device */
 463        /* set before framebuffer registration, 
 464           remove after unregister */
 465        struct backlight_device *bl_dev;
 466
 467        /* Backlight level curve */
 468        struct mutex bl_curve_mutex;    
 469        u8 bl_curve[FB_BACKLIGHT_LEVELS];
 470#endif
 471#ifdef CONFIG_FB_DEFERRED_IO
 472        struct delayed_work deferred_work;
 473        struct fb_deferred_io *fbdefio;
 474#endif
 475
 476        struct fb_ops *fbops;
 477        struct device *device;          /* This is the parent */
 478        struct device *dev;             /* This is this fb device */
 479        int class_flag;                    /* private sysfs flags */
 480#ifdef CONFIG_FB_TILEBLITTING
 481        struct fb_tile_ops *tileops;    /* Tile Blitting */
 482#endif
 483        char __iomem *screen_base;      /* Virtual address */
 484        unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */ 
 485        void *pseudo_palette;           /* Fake palette of 16 colors */ 
 486#define FBINFO_STATE_RUNNING    0
 487#define FBINFO_STATE_SUSPENDED  1
 488        u32 state;                      /* Hardware state i.e suspend */
 489        void *fbcon_par;                /* fbcon use-only private area */
 490        /* From here on everything is device dependent */
 491        void *par;
 492        /* we need the PCI or similar aperture base/size not
 493           smem_start/size as smem_start may just be an object
 494           allocated inside the aperture so may not actually overlap */
 495        struct apertures_struct {
 496                unsigned int count;
 497                struct aperture {
 498                        resource_size_t base;
 499                        resource_size_t size;
 500                } ranges[0];
 501        } *apertures;
 502};
 503
 504static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
 505        struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
 506                        + max_num * sizeof(struct aperture), GFP_KERNEL);
 507        if (!a)
 508                return NULL;
 509        a->count = max_num;
 510        return a;
 511}
 512
 513#ifdef MODULE
 514#define FBINFO_DEFAULT  FBINFO_MODULE
 515#else
 516#define FBINFO_DEFAULT  0
 517#endif
 518
 519// This will go away
 520#define FBINFO_FLAG_MODULE      FBINFO_MODULE
 521#define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
 522
 523/* This will go away
 524 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 525 * when it wants to turn the acceleration engine on.  This is
 526 * really a separate operation, and should be modified via sysfs.
 527 *  But for now, we leave it broken with the following define
 528 */
 529#define STUPID_ACCELF_TEXT_SHIT
 530
 531// This will go away
 532#if defined(__sparc__)
 533
 534/* We map all of our framebuffers such that big-endian accesses
 535 * are what we want, so the following is sufficient.
 536 */
 537
 538// This will go away
 539#define fb_readb sbus_readb
 540#define fb_readw sbus_readw
 541#define fb_readl sbus_readl
 542#define fb_readq sbus_readq
 543#define fb_writeb sbus_writeb
 544#define fb_writew sbus_writew
 545#define fb_writel sbus_writel
 546#define fb_writeq sbus_writeq
 547#define fb_memset sbus_memset_io
 548#define fb_memcpy_fromfb sbus_memcpy_fromio
 549#define fb_memcpy_tofb sbus_memcpy_toio
 550
 551#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
 552
 553#define fb_readb __raw_readb
 554#define fb_readw __raw_readw
 555#define fb_readl __raw_readl
 556#define fb_readq __raw_readq
 557#define fb_writeb __raw_writeb
 558#define fb_writew __raw_writew
 559#define fb_writel __raw_writel
 560#define fb_writeq __raw_writeq
 561#define fb_memset memset_io
 562#define fb_memcpy_fromfb memcpy_fromio
 563#define fb_memcpy_tofb memcpy_toio
 564
 565#else
 566
 567#define fb_readb(addr) (*(volatile u8 *) (addr))
 568#define fb_readw(addr) (*(volatile u16 *) (addr))
 569#define fb_readl(addr) (*(volatile u32 *) (addr))
 570#define fb_readq(addr) (*(volatile u64 *) (addr))
 571#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
 572#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
 573#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
 574#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
 575#define fb_memset memset
 576#define fb_memcpy_fromfb memcpy
 577#define fb_memcpy_tofb memcpy
 578
 579#endif
 580
 581#define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
 582#define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
 583                                                      (val) << (bits))
 584#define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
 585                                                      (val) >> (bits))
 586
 587    /*
 588     *  `Generic' versions of the frame buffer device operations
 589     */
 590
 591extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
 592extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
 593extern int fb_blank(struct fb_info *info, int blank);
 594extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
 595extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
 596extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 597/*
 598 * Drawing operations where framebuffer is in system RAM
 599 */
 600extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 601extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 602extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
 603extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
 604                           size_t count, loff_t *ppos);
 605extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
 606                            size_t count, loff_t *ppos);
 607
 608/* drivers/video/fbmem.c */
 609extern int register_framebuffer(struct fb_info *fb_info);
 610extern int unregister_framebuffer(struct fb_info *fb_info);
 611extern int unlink_framebuffer(struct fb_info *fb_info);
 612extern void remove_conflicting_framebuffers(struct apertures_struct *a,
 613                                const char *name, bool primary);
 614extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 615extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 616extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
 617extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
 618                                u32 height, u32 shift_high, u32 shift_low, u32 mod);
 619extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 620extern void fb_set_suspend(struct fb_info *info, int state);
 621extern int fb_get_color_depth(struct fb_var_screeninfo *var,
 622                              struct fb_fix_screeninfo *fix);
 623extern int fb_get_options(char *name, char **option);
 624extern int fb_new_modelist(struct fb_info *info);
 625
 626extern struct fb_info *registered_fb[FB_MAX];
 627extern int num_registered_fb;
 628extern struct class *fb_class;
 629
 630extern int lock_fb_info(struct fb_info *info);
 631
 632static inline void unlock_fb_info(struct fb_info *info)
 633{
 634        mutex_unlock(&info->lock);
 635}
 636
 637static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
 638                                           u8 *src, u32 s_pitch, u32 height)
 639{
 640        int i, j;
 641
 642        d_pitch -= s_pitch;
 643
 644        for (i = height; i--; ) {
 645                /* s_pitch is a few bytes at the most, memcpy is suboptimal */
 646                for (j = 0; j < s_pitch; j++)
 647                        *dst++ = *src++;
 648                dst += d_pitch;
 649        }
 650}
 651
 652/* drivers/video/fb_defio.c */
 653extern void fb_deferred_io_init(struct fb_info *info);
 654extern void fb_deferred_io_open(struct fb_info *info,
 655                                struct inode *inode,
 656                                struct file *file);
 657extern void fb_deferred_io_cleanup(struct fb_info *info);
 658extern int fb_deferred_io_fsync(struct file *file, loff_t start,
 659                                loff_t end, int datasync);
 660
 661static inline bool fb_be_math(struct fb_info *info)
 662{
 663#ifdef CONFIG_FB_FOREIGN_ENDIAN
 664#if defined(CONFIG_FB_BOTH_ENDIAN)
 665        return info->flags & FBINFO_BE_MATH;
 666#elif defined(CONFIG_FB_BIG_ENDIAN)
 667        return true;
 668#elif defined(CONFIG_FB_LITTLE_ENDIAN)
 669        return false;
 670#endif /* CONFIG_FB_BOTH_ENDIAN */
 671#else
 672#ifdef __BIG_ENDIAN
 673        return true;
 674#else
 675        return false;
 676#endif /* __BIG_ENDIAN */
 677#endif /* CONFIG_FB_FOREIGN_ENDIAN */
 678}
 679
 680/* drivers/video/fbsysfs.c */
 681extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
 682extern void framebuffer_release(struct fb_info *info);
 683extern int fb_init_device(struct fb_info *fb_info);
 684extern void fb_cleanup_device(struct fb_info *head);
 685extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
 686
 687/* drivers/video/fbmon.c */
 688#define FB_MAXTIMINGS           0
 689#define FB_VSYNCTIMINGS         1
 690#define FB_HSYNCTIMINGS         2
 691#define FB_DCLKTIMINGS          3
 692#define FB_IGNOREMON            0x100
 693
 694#define FB_MODE_IS_UNKNOWN      0
 695#define FB_MODE_IS_DETAILED     1
 696#define FB_MODE_IS_STANDARD     2
 697#define FB_MODE_IS_VESA         4
 698#define FB_MODE_IS_CALCULATED   8
 699#define FB_MODE_IS_FIRST        16
 700#define FB_MODE_IS_FROM_VAR     32
 701
 702extern int fbmon_dpms(const struct fb_info *fb_info);
 703extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
 704                       struct fb_info *info);
 705extern int fb_validate_mode(const struct fb_var_screeninfo *var,
 706                            struct fb_info *info);
 707extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
 708extern const unsigned char *fb_firmware_edid(struct device *device);
 709extern void fb_edid_to_monspecs(unsigned char *edid,
 710                                struct fb_monspecs *specs);
 711extern void fb_edid_add_monspecs(unsigned char *edid,
 712                                 struct fb_monspecs *specs);
 713extern void fb_destroy_modedb(struct fb_videomode *modedb);
 714extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
 715extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
 716
 717/* drivers/video/modedb.c */
 718#define VESA_MODEDB_SIZE 34
 719extern void fb_var_to_videomode(struct fb_videomode *mode,
 720                                const struct fb_var_screeninfo *var);
 721extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
 722                                const struct fb_videomode *mode);
 723extern int fb_mode_is_equal(const struct fb_videomode *mode1,
 724                            const struct fb_videomode *mode2);
 725extern int fb_add_videomode(const struct fb_videomode *mode,
 726                            struct list_head *head);
 727extern void fb_delete_videomode(const struct fb_videomode *mode,
 728                                struct list_head *head);
 729extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
 730                                                struct list_head *head);
 731extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
 732                                                    struct list_head *head);
 733extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
 734                                                       struct list_head *head);
 735extern void fb_destroy_modelist(struct list_head *head);
 736extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
 737                                     struct list_head *head);
 738extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
 739                                                       struct list_head *head);
 740
 741/* drivers/video/fbcmap.c */
 742extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
 743extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
 744extern void fb_dealloc_cmap(struct fb_cmap *cmap);
 745extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
 746extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
 747extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
 748extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
 749extern const struct fb_cmap *fb_default_cmap(int len);
 750extern void fb_invert_cmaps(void);
 751
 752struct fb_videomode {
 753        const char *name;       /* optional */
 754        u32 refresh;            /* optional */
 755        u32 xres;
 756        u32 yres;
 757        u32 pixclock;
 758        u32 left_margin;
 759        u32 right_margin;
 760        u32 upper_margin;
 761        u32 lower_margin;
 762        u32 hsync_len;
 763        u32 vsync_len;
 764        u32 sync;
 765        u32 vmode;
 766        u32 flag;
 767};
 768
 769extern const char *fb_mode_option;
 770extern const struct fb_videomode vesa_modes[];
 771extern const struct fb_videomode cea_modes[64];
 772
 773struct fb_modelist {
 774        struct list_head list;
 775        struct fb_videomode mode;
 776};
 777
 778extern int fb_find_mode(struct fb_var_screeninfo *var,
 779                        struct fb_info *info, const char *mode_option,
 780                        const struct fb_videomode *db,
 781                        unsigned int dbsize,
 782                        const struct fb_videomode *default_mode,
 783                        unsigned int default_bpp);
 784
 785#endif /* _LINUX_FB_H */
 786