linux/include/linux/fb.h
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   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;
  22struct videomode;
  23struct device_node;
  24
  25/* Definitions below are used in the parsed monitor specs */
  26#define FB_DPMS_ACTIVE_OFF      1
  27#define FB_DPMS_SUSPEND         2
  28#define FB_DPMS_STANDBY         4
  29
  30#define FB_DISP_DDI             1
  31#define FB_DISP_ANA_700_300     2
  32#define FB_DISP_ANA_714_286     4
  33#define FB_DISP_ANA_1000_400    8
  34#define FB_DISP_ANA_700_000     16
  35
  36#define FB_DISP_MONO            32
  37#define FB_DISP_RGB             64
  38#define FB_DISP_MULTI           128
  39#define FB_DISP_UNKNOWN         256
  40
  41#define FB_SIGNAL_NONE          0
  42#define FB_SIGNAL_BLANK_BLANK   1
  43#define FB_SIGNAL_SEPARATE      2
  44#define FB_SIGNAL_COMPOSITE     4
  45#define FB_SIGNAL_SYNC_ON_GREEN 8
  46#define FB_SIGNAL_SERRATION_ON  16
  47
  48#define FB_MISC_PRIM_COLOR      1
  49#define FB_MISC_1ST_DETAIL      2       /* First Detailed Timing is preferred */
  50struct fb_chroma {
  51        __u32 redx;     /* in fraction of 1024 */
  52        __u32 greenx;
  53        __u32 bluex;
  54        __u32 whitex;
  55        __u32 redy;
  56        __u32 greeny;
  57        __u32 bluey;
  58        __u32 whitey;
  59};
  60
  61struct fb_monspecs {
  62        struct fb_chroma chroma;
  63        struct fb_videomode *modedb;    /* mode database */
  64        __u8  manufacturer[4];          /* Manufacturer */
  65        __u8  monitor[14];              /* Monitor String */
  66        __u8  serial_no[14];            /* Serial Number */
  67        __u8  ascii[14];                /* ? */
  68        __u32 modedb_len;               /* mode database length */
  69        __u32 model;                    /* Monitor Model */
  70        __u32 serial;                   /* Serial Number - Integer */
  71        __u32 year;                     /* Year manufactured */
  72        __u32 week;                     /* Week Manufactured */
  73        __u32 hfmin;                    /* hfreq lower limit (Hz) */
  74        __u32 hfmax;                    /* hfreq upper limit (Hz) */
  75        __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
  76        __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
  77        __u16 input;                    /* display type - see FB_DISP_* */
  78        __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
  79        __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
  80        __u16 vfmin;                    /* vfreq lower limit (Hz) */
  81        __u16 vfmax;                    /* vfreq upper limit (Hz) */
  82        __u16 gamma;                    /* Gamma - in fractions of 100 */
  83        __u16 gtf       : 1;            /* supports GTF */
  84        __u16 misc;                     /* Misc flags - see FB_MISC_* */
  85        __u8  version;                  /* EDID version... */
  86        __u8  revision;                 /* ...and revision */
  87        __u8  max_x;                    /* Maximum horizontal size (cm) */
  88        __u8  max_y;                    /* Maximum vertical size (cm) */
  89};
  90
  91struct fb_cmap_user {
  92        __u32 start;                    /* First entry  */
  93        __u32 len;                      /* Number of entries */
  94        __u16 __user *red;              /* Red values   */
  95        __u16 __user *green;
  96        __u16 __user *blue;
  97        __u16 __user *transp;           /* transparency, can be NULL */
  98};
  99
 100struct fb_image_user {
 101        __u32 dx;                       /* Where to place image */
 102        __u32 dy;
 103        __u32 width;                    /* Size of image */
 104        __u32 height;
 105        __u32 fg_color;                 /* Only used when a mono bitmap */
 106        __u32 bg_color;
 107        __u8  depth;                    /* Depth of the image */
 108        const char __user *data;        /* Pointer to image data */
 109        struct fb_cmap_user cmap;       /* color map info */
 110};
 111
 112struct fb_cursor_user {
 113        __u16 set;                      /* what to set */
 114        __u16 enable;                   /* cursor on/off */
 115        __u16 rop;                      /* bitop operation */
 116        const char __user *mask;        /* cursor mask bits */
 117        struct fbcurpos hot;            /* cursor hot spot */
 118        struct fb_image_user image;     /* Cursor image */
 119};
 120
 121/*
 122 * Register/unregister for framebuffer events
 123 */
 124
 125/*      The resolution of the passed in fb_info about to change */ 
 126#define FB_EVENT_MODE_CHANGE            0x01
 127/*      The display on this fb_info is beeing suspended, no access to the
 128 *      framebuffer is allowed any more after that call returns
 129 */
 130#define FB_EVENT_SUSPEND                0x02
 131/*      The display on this fb_info was resumed, you can restore the display
 132 *      if you own it
 133 */
 134#define FB_EVENT_RESUME                 0x03
 135/*      An entry from the modelist was removed */
 136#define FB_EVENT_MODE_DELETE            0x04
 137/*      A driver registered itself */
 138#define FB_EVENT_FB_REGISTERED          0x05
 139/*      A driver unregistered itself */
 140#define FB_EVENT_FB_UNREGISTERED        0x06
 141/*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
 142#define FB_EVENT_GET_CONSOLE_MAP        0x07
 143/*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
 144#define FB_EVENT_SET_CONSOLE_MAP        0x08
 145/*      A hardware display blank change occurred */
 146#define FB_EVENT_BLANK                  0x09
 147/*      Private modelist is to be replaced */
 148#define FB_EVENT_NEW_MODELIST           0x0A
 149/*      The resolution of the passed in fb_info about to change and
 150        all vc's should be changed         */
 151#define FB_EVENT_MODE_CHANGE_ALL        0x0B
 152/*      A software display blank change occurred */
 153#define FB_EVENT_CONBLANK               0x0C
 154/*      Get drawing requirements        */
 155#define FB_EVENT_GET_REQ                0x0D
 156/*      Unbind from the console if possible */
 157#define FB_EVENT_FB_UNBIND              0x0E
 158/*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
 159#define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
 160/*      A hardware display blank early change occured */
 161#define FB_EARLY_EVENT_BLANK            0x10
 162/*      A hardware display blank revert early change occured */
 163#define FB_R_EARLY_EVENT_BLANK          0x11
 164
 165struct fb_event {
 166        struct fb_info *info;
 167        void *data;
 168};
 169
 170struct fb_blit_caps {
 171        u32 x;
 172        u32 y;
 173        u32 len;
 174        u32 flags;
 175};
 176
 177extern int fb_register_client(struct notifier_block *nb);
 178extern int fb_unregister_client(struct notifier_block *nb);
 179extern int fb_notifier_call_chain(unsigned long val, void *v);
 180/*
 181 * Pixmap structure definition
 182 *
 183 * The purpose of this structure is to translate data
 184 * from the hardware independent format of fbdev to what
 185 * format the hardware needs.
 186 */
 187
 188#define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
 189#define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
 190#define FB_PIXMAP_IO      4     /* memory is iomapped       */
 191#define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
 192
 193struct fb_pixmap {
 194        u8  *addr;              /* pointer to memory                    */
 195        u32 size;               /* size of buffer in bytes              */
 196        u32 offset;             /* current offset to buffer             */
 197        u32 buf_align;          /* byte alignment of each bitmap        */
 198        u32 scan_align;         /* alignment per scanline               */
 199        u32 access_align;       /* alignment per read/write (bits)      */
 200        u32 flags;              /* see FB_PIXMAP_*                      */
 201        u32 blit_x;             /* supported bit block dimensions (1-32)*/
 202        u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
 203                                /*         blit_y = 1 << (height - 1)   */
 204                                /* if 0, will be set to 0xffffffff (all)*/
 205        /* access methods */
 206        void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
 207        void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
 208};
 209
 210#ifdef CONFIG_FB_DEFERRED_IO
 211struct fb_deferred_io {
 212        /* delay between mkwrite and deferred handler */
 213        unsigned long delay;
 214        struct mutex lock; /* mutex that protects the page list */
 215        struct list_head pagelist; /* list of touched pages */
 216        /* callback */
 217        void (*first_io)(struct fb_info *info);
 218        void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
 219};
 220#endif
 221
 222/*
 223 * Frame buffer operations
 224 *
 225 * LOCKING NOTE: those functions must _ALL_ be called with the console
 226 * semaphore held, this is the only suitable locking mechanism we have
 227 * in 2.6. Some may be called at interrupt time at this point though.
 228 *
 229 * The exception to this is the debug related hooks.  Putting the fb
 230 * into a debug state (e.g. flipping to the kernel console) and restoring
 231 * it must be done in a lock-free manner, so low level drivers should
 232 * keep track of the initial console (if applicable) and may need to
 233 * perform direct, unlocked hardware writes in these hooks.
 234 */
 235
 236struct fb_ops {
 237        /* open/release and usage marking */
 238        struct module *owner;
 239        int (*fb_open)(struct fb_info *info, int user);
 240        int (*fb_release)(struct fb_info *info, int user);
 241
 242        /* For framebuffers with strange non linear layouts or that do not
 243         * work with normal memory mapped access
 244         */
 245        ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
 246                           size_t count, loff_t *ppos);
 247        ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
 248                            size_t count, loff_t *ppos);
 249
 250        /* checks var and eventually tweaks it to something supported,
 251         * DO NOT MODIFY PAR */
 252        int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
 253
 254        /* set the video mode according to info->var */
 255        int (*fb_set_par)(struct fb_info *info);
 256
 257        /* set color register */
 258        int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
 259                            unsigned blue, unsigned transp, struct fb_info *info);
 260
 261        /* set color registers in batch */
 262        int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
 263
 264        /* blank display */
 265        int (*fb_blank)(int blank, struct fb_info *info);
 266
 267        /* pan display */
 268        int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
 269
 270        /* Draws a rectangle */
 271        void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
 272        /* Copy data from area to another */
 273        void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
 274        /* Draws a image to the display */
 275        void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
 276
 277        /* Draws cursor */
 278        int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
 279
 280        /* Rotates the display */
 281        void (*fb_rotate)(struct fb_info *info, int angle);
 282
 283        /* wait for blit idle, optional */
 284        int (*fb_sync)(struct fb_info *info);
 285
 286        /* perform fb specific ioctl (optional) */
 287        int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
 288                        unsigned long arg);
 289
 290        /* Handle 32bit compat ioctl (optional) */
 291        int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
 292                        unsigned long arg);
 293
 294        /* perform fb specific mmap */
 295        int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
 296
 297        /* get capability given var */
 298        void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
 299                            struct fb_var_screeninfo *var);
 300
 301        /* teardown any resources to do with this framebuffer */
 302        void (*fb_destroy)(struct fb_info *info);
 303
 304        /* called at KDB enter and leave time to prepare the console */
 305        int (*fb_debug_enter)(struct fb_info *info);
 306        int (*fb_debug_leave)(struct fb_info *info);
 307};
 308
 309#ifdef CONFIG_FB_TILEBLITTING
 310#define FB_TILE_CURSOR_NONE        0
 311#define FB_TILE_CURSOR_UNDERLINE   1
 312#define FB_TILE_CURSOR_LOWER_THIRD 2
 313#define FB_TILE_CURSOR_LOWER_HALF  3
 314#define FB_TILE_CURSOR_TWO_THIRDS  4
 315#define FB_TILE_CURSOR_BLOCK       5
 316
 317struct fb_tilemap {
 318        __u32 width;                /* width of each tile in pixels */
 319        __u32 height;               /* height of each tile in scanlines */
 320        __u32 depth;                /* color depth of each tile */
 321        __u32 length;               /* number of tiles in the map */
 322        const __u8 *data;           /* actual tile map: a bitmap array, packed
 323                                       to the nearest byte */
 324};
 325
 326struct fb_tilerect {
 327        __u32 sx;                   /* origin in the x-axis */
 328        __u32 sy;                   /* origin in the y-axis */
 329        __u32 width;                /* number of tiles in the x-axis */
 330        __u32 height;               /* number of tiles in the y-axis */
 331        __u32 index;                /* what tile to use: index to tile map */
 332        __u32 fg;                   /* foreground color */
 333        __u32 bg;                   /* background color */
 334        __u32 rop;                  /* raster operation */
 335};
 336
 337struct fb_tilearea {
 338        __u32 sx;                   /* source origin in the x-axis */
 339        __u32 sy;                   /* source origin in the y-axis */
 340        __u32 dx;                   /* destination origin in the x-axis */
 341        __u32 dy;                   /* destination origin in the y-axis */
 342        __u32 width;                /* number of tiles in the x-axis */
 343        __u32 height;               /* number of tiles in the y-axis */
 344};
 345
 346struct fb_tileblit {
 347        __u32 sx;                   /* origin in the x-axis */
 348        __u32 sy;                   /* origin in the y-axis */
 349        __u32 width;                /* number of tiles in the x-axis */
 350        __u32 height;               /* number of tiles in the y-axis */
 351        __u32 fg;                   /* foreground color */
 352        __u32 bg;                   /* background color */
 353        __u32 length;               /* number of tiles to draw */
 354        __u32 *indices;             /* array of indices to tile map */
 355};
 356
 357struct fb_tilecursor {
 358        __u32 sx;                   /* cursor position in the x-axis */
 359        __u32 sy;                   /* cursor position in the y-axis */
 360        __u32 mode;                 /* 0 = erase, 1 = draw */
 361        __u32 shape;                /* see FB_TILE_CURSOR_* */
 362        __u32 fg;                   /* foreground color */
 363        __u32 bg;                   /* background color */
 364};
 365
 366struct fb_tile_ops {
 367        /* set tile characteristics */
 368        void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
 369
 370        /* all dimensions from hereon are in terms of tiles */
 371
 372        /* move a rectangular region of tiles from one area to another*/
 373        void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
 374        /* fill a rectangular region with a tile */
 375        void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
 376        /* copy an array of tiles */
 377        void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
 378        /* cursor */
 379        void (*fb_tilecursor)(struct fb_info *info,
 380                              struct fb_tilecursor *cursor);
 381        /* get maximum length of the tile map */
 382        int (*fb_get_tilemax)(struct fb_info *info);
 383};
 384#endif /* CONFIG_FB_TILEBLITTING */
 385
 386/* FBINFO_* = fb_info.flags bit flags */
 387#define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
 388#define FBINFO_HWACCEL_DISABLED 0x0002
 389        /* When FBINFO_HWACCEL_DISABLED is set:
 390         *  Hardware acceleration is turned off.  Software implementations
 391         *  of required functions (copyarea(), fillrect(), and imageblit())
 392         *  takes over; acceleration engine should be in a quiescent state */
 393
 394/* hints */
 395#define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
 396#define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
 397#define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
 398
 399/* hardware supported ops */
 400/*  semantics: when a bit is set, it indicates that the operation is
 401 *   accelerated by hardware.
 402 *  required functions will still work even if the bit is not set.
 403 *  optional functions may not even exist if the flag bit is not set.
 404 */
 405#define FBINFO_HWACCEL_NONE             0x0000
 406#define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
 407#define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
 408#define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
 409#define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
 410#define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
 411#define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
 412#define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
 413
 414#define FBINFO_MISC_USEREVENT          0x10000 /* event request
 415                                                  from userspace */
 416#define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
 417
 418/* A driver may set this flag to indicate that it does want a set_par to be
 419 * called every time when fbcon_switch is executed. The advantage is that with
 420 * this flag set you can really be sure that set_par is always called before
 421 * any of the functions dependent on the correct hardware state or altering
 422 * that state, even if you are using some broken X releases. The disadvantage
 423 * is that it introduces unwanted delays to every console switch if set_par
 424 * is slow. It is a good idea to try this flag in the drivers initialization
 425 * code whenever there is a bug report related to switching between X and the
 426 * framebuffer console.
 427 */
 428#define FBINFO_MISC_ALWAYS_SETPAR   0x40000
 429
 430/* where the fb is a firmware driver, and can be replaced with a proper one */
 431#define FBINFO_MISC_FIRMWARE        0x80000
 432/*
 433 * Host and GPU endianness differ.
 434 */
 435#define FBINFO_FOREIGN_ENDIAN   0x100000
 436/*
 437 * Big endian math. This is the same flags as above, but with different
 438 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
 439 * and host endianness. Drivers should not use this flag.
 440 */
 441#define FBINFO_BE_MATH  0x100000
 442
 443/* report to the VT layer that this fb driver can accept forced console
 444   output like oopses */
 445#define FBINFO_CAN_FORCE_OUTPUT     0x200000
 446
 447struct fb_info {
 448        atomic_t count;
 449        int node;
 450        int flags;
 451        struct mutex lock;              /* Lock for open/release/ioctl funcs */
 452        struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
 453        struct fb_var_screeninfo var;   /* Current var */
 454        struct fb_fix_screeninfo fix;   /* Current fix */
 455        struct fb_monspecs monspecs;    /* Current Monitor specs */
 456        struct work_struct queue;       /* Framebuffer event queue */
 457        struct fb_pixmap pixmap;        /* Image hardware mapper */
 458        struct fb_pixmap sprite;        /* Cursor hardware mapper */
 459        struct fb_cmap cmap;            /* Current cmap */
 460        struct list_head modelist;      /* mode list */
 461        struct fb_videomode *mode;      /* current mode */
 462
 463#ifdef CONFIG_FB_BACKLIGHT
 464        /* assigned backlight device */
 465        /* set before framebuffer registration, 
 466           remove after unregister */
 467        struct backlight_device *bl_dev;
 468
 469        /* Backlight level curve */
 470        struct mutex bl_curve_mutex;    
 471        u8 bl_curve[FB_BACKLIGHT_LEVELS];
 472#endif
 473#ifdef CONFIG_FB_DEFERRED_IO
 474        struct delayed_work deferred_work;
 475        struct fb_deferred_io *fbdefio;
 476#endif
 477
 478        struct fb_ops *fbops;
 479        struct device *device;          /* This is the parent */
 480        struct device *dev;             /* This is this fb device */
 481        int class_flag;                    /* private sysfs flags */
 482#ifdef CONFIG_FB_TILEBLITTING
 483        struct fb_tile_ops *tileops;    /* Tile Blitting */
 484#endif
 485        char __iomem *screen_base;      /* Virtual address */
 486        unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */ 
 487        void *pseudo_palette;           /* Fake palette of 16 colors */ 
 488#define FBINFO_STATE_RUNNING    0
 489#define FBINFO_STATE_SUSPENDED  1
 490        u32 state;                      /* Hardware state i.e suspend */
 491        void *fbcon_par;                /* fbcon use-only private area */
 492        /* From here on everything is device dependent */
 493        void *par;
 494        /* we need the PCI or similar aperture base/size not
 495           smem_start/size as smem_start may just be an object
 496           allocated inside the aperture so may not actually overlap */
 497        struct apertures_struct {
 498                unsigned int count;
 499                struct aperture {
 500                        resource_size_t base;
 501                        resource_size_t size;
 502                } ranges[0];
 503        } *apertures;
 504};
 505
 506static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
 507        struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
 508                        + max_num * sizeof(struct aperture), GFP_KERNEL);
 509        if (!a)
 510                return NULL;
 511        a->count = max_num;
 512        return a;
 513}
 514
 515#ifdef MODULE
 516#define FBINFO_DEFAULT  FBINFO_MODULE
 517#else
 518#define FBINFO_DEFAULT  0
 519#endif
 520
 521// This will go away
 522#define FBINFO_FLAG_MODULE      FBINFO_MODULE
 523#define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
 524
 525/* This will go away
 526 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 527 * when it wants to turn the acceleration engine on.  This is
 528 * really a separate operation, and should be modified via sysfs.
 529 *  But for now, we leave it broken with the following define
 530 */
 531#define STUPID_ACCELF_TEXT_SHIT
 532
 533// This will go away
 534#if defined(__sparc__)
 535
 536/* We map all of our framebuffers such that big-endian accesses
 537 * are what we want, so the following is sufficient.
 538 */
 539
 540// This will go away
 541#define fb_readb sbus_readb
 542#define fb_readw sbus_readw
 543#define fb_readl sbus_readl
 544#define fb_readq sbus_readq
 545#define fb_writeb sbus_writeb
 546#define fb_writew sbus_writew
 547#define fb_writel sbus_writel
 548#define fb_writeq sbus_writeq
 549#define fb_memset sbus_memset_io
 550#define fb_memcpy_fromfb sbus_memcpy_fromio
 551#define fb_memcpy_tofb sbus_memcpy_toio
 552
 553#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
 554
 555#define fb_readb __raw_readb
 556#define fb_readw __raw_readw
 557#define fb_readl __raw_readl
 558#define fb_readq __raw_readq
 559#define fb_writeb __raw_writeb
 560#define fb_writew __raw_writew
 561#define fb_writel __raw_writel
 562#define fb_writeq __raw_writeq
 563#define fb_memset memset_io
 564#define fb_memcpy_fromfb memcpy_fromio
 565#define fb_memcpy_tofb memcpy_toio
 566
 567#else
 568
 569#define fb_readb(addr) (*(volatile u8 *) (addr))
 570#define fb_readw(addr) (*(volatile u16 *) (addr))
 571#define fb_readl(addr) (*(volatile u32 *) (addr))
 572#define fb_readq(addr) (*(volatile u64 *) (addr))
 573#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
 574#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
 575#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
 576#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
 577#define fb_memset memset
 578#define fb_memcpy_fromfb memcpy
 579#define fb_memcpy_tofb memcpy
 580
 581#endif
 582
 583#define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
 584#define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
 585                                                      (val) << (bits))
 586#define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
 587                                                      (val) >> (bits))
 588
 589    /*
 590     *  `Generic' versions of the frame buffer device operations
 591     */
 592
 593extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
 594extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
 595extern int fb_blank(struct fb_info *info, int blank);
 596extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
 597extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
 598extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 599/*
 600 * Drawing operations where framebuffer is in system RAM
 601 */
 602extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 603extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 604extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
 605extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
 606                           size_t count, loff_t *ppos);
 607extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
 608                            size_t count, loff_t *ppos);
 609
 610/* drivers/video/fbmem.c */
 611extern int register_framebuffer(struct fb_info *fb_info);
 612extern int unregister_framebuffer(struct fb_info *fb_info);
 613extern int unlink_framebuffer(struct fb_info *fb_info);
 614extern void remove_conflicting_framebuffers(struct apertures_struct *a,
 615                                const char *name, bool primary);
 616extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 617extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 618extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
 619extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
 620                                u32 height, u32 shift_high, u32 shift_low, u32 mod);
 621extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 622extern void fb_set_suspend(struct fb_info *info, int state);
 623extern int fb_get_color_depth(struct fb_var_screeninfo *var,
 624                              struct fb_fix_screeninfo *fix);
 625extern int fb_get_options(char *name, char **option);
 626extern int fb_new_modelist(struct fb_info *info);
 627
 628extern struct fb_info *registered_fb[FB_MAX];
 629extern int num_registered_fb;
 630extern struct class *fb_class;
 631
 632extern int lock_fb_info(struct fb_info *info);
 633
 634static inline void unlock_fb_info(struct fb_info *info)
 635{
 636        mutex_unlock(&info->lock);
 637}
 638
 639static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
 640                                           u8 *src, u32 s_pitch, u32 height)
 641{
 642        int i, j;
 643
 644        d_pitch -= s_pitch;
 645
 646        for (i = height; i--; ) {
 647                /* s_pitch is a few bytes at the most, memcpy is suboptimal */
 648                for (j = 0; j < s_pitch; j++)
 649                        *dst++ = *src++;
 650                dst += d_pitch;
 651        }
 652}
 653
 654/* drivers/video/fb_defio.c */
 655extern void fb_deferred_io_init(struct fb_info *info);
 656extern void fb_deferred_io_open(struct fb_info *info,
 657                                struct inode *inode,
 658                                struct file *file);
 659extern void fb_deferred_io_cleanup(struct fb_info *info);
 660extern int fb_deferred_io_fsync(struct file *file, loff_t start,
 661                                loff_t end, int datasync);
 662
 663static inline bool fb_be_math(struct fb_info *info)
 664{
 665#ifdef CONFIG_FB_FOREIGN_ENDIAN
 666#if defined(CONFIG_FB_BOTH_ENDIAN)
 667        return info->flags & FBINFO_BE_MATH;
 668#elif defined(CONFIG_FB_BIG_ENDIAN)
 669        return true;
 670#elif defined(CONFIG_FB_LITTLE_ENDIAN)
 671        return false;
 672#endif /* CONFIG_FB_BOTH_ENDIAN */
 673#else
 674#ifdef __BIG_ENDIAN
 675        return true;
 676#else
 677        return false;
 678#endif /* __BIG_ENDIAN */
 679#endif /* CONFIG_FB_FOREIGN_ENDIAN */
 680}
 681
 682/* drivers/video/fbsysfs.c */
 683extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
 684extern void framebuffer_release(struct fb_info *info);
 685extern int fb_init_device(struct fb_info *fb_info);
 686extern void fb_cleanup_device(struct fb_info *head);
 687extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
 688
 689/* drivers/video/fbmon.c */
 690#define FB_MAXTIMINGS           0
 691#define FB_VSYNCTIMINGS         1
 692#define FB_HSYNCTIMINGS         2
 693#define FB_DCLKTIMINGS          3
 694#define FB_IGNOREMON            0x100
 695
 696#define FB_MODE_IS_UNKNOWN      0
 697#define FB_MODE_IS_DETAILED     1
 698#define FB_MODE_IS_STANDARD     2
 699#define FB_MODE_IS_VESA         4
 700#define FB_MODE_IS_CALCULATED   8
 701#define FB_MODE_IS_FIRST        16
 702#define FB_MODE_IS_FROM_VAR     32
 703
 704extern int fbmon_dpms(const struct fb_info *fb_info);
 705extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
 706                       struct fb_info *info);
 707extern int fb_validate_mode(const struct fb_var_screeninfo *var,
 708                            struct fb_info *info);
 709extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
 710extern const unsigned char *fb_firmware_edid(struct device *device);
 711extern void fb_edid_to_monspecs(unsigned char *edid,
 712                                struct fb_monspecs *specs);
 713extern void fb_edid_add_monspecs(unsigned char *edid,
 714                                 struct fb_monspecs *specs);
 715extern void fb_destroy_modedb(struct fb_videomode *modedb);
 716extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
 717extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
 718
 719extern int of_get_fb_videomode(struct device_node *np,
 720                               struct fb_videomode *fb,
 721                               int index);
 722extern int fb_videomode_from_videomode(const struct videomode *vm,
 723                                       struct fb_videomode *fbmode);
 724
 725/* drivers/video/modedb.c */
 726#define VESA_MODEDB_SIZE 34
 727extern void fb_var_to_videomode(struct fb_videomode *mode,
 728                                const struct fb_var_screeninfo *var);
 729extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
 730                                const struct fb_videomode *mode);
 731extern int fb_mode_is_equal(const struct fb_videomode *mode1,
 732                            const struct fb_videomode *mode2);
 733extern int fb_add_videomode(const struct fb_videomode *mode,
 734                            struct list_head *head);
 735extern void fb_delete_videomode(const struct fb_videomode *mode,
 736                                struct list_head *head);
 737extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
 738                                                struct list_head *head);
 739extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
 740                                                    struct list_head *head);
 741extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
 742                                                       struct list_head *head);
 743extern void fb_destroy_modelist(struct list_head *head);
 744extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
 745                                     struct list_head *head);
 746extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
 747                                                       struct list_head *head);
 748
 749/* drivers/video/fbcmap.c */
 750extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
 751extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
 752extern void fb_dealloc_cmap(struct fb_cmap *cmap);
 753extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
 754extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
 755extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
 756extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
 757extern const struct fb_cmap *fb_default_cmap(int len);
 758extern void fb_invert_cmaps(void);
 759
 760struct fb_videomode {
 761        const char *name;       /* optional */
 762        u32 refresh;            /* optional */
 763        u32 xres;
 764        u32 yres;
 765        u32 pixclock;
 766        u32 left_margin;
 767        u32 right_margin;
 768        u32 upper_margin;
 769        u32 lower_margin;
 770        u32 hsync_len;
 771        u32 vsync_len;
 772        u32 sync;
 773        u32 vmode;
 774        u32 flag;
 775};
 776
 777extern const char *fb_mode_option;
 778extern const struct fb_videomode vesa_modes[];
 779extern const struct fb_videomode cea_modes[64];
 780
 781struct fb_modelist {
 782        struct list_head list;
 783        struct fb_videomode mode;
 784};
 785
 786extern int fb_find_mode(struct fb_var_screeninfo *var,
 787                        struct fb_info *info, const char *mode_option,
 788                        const struct fb_videomode *db,
 789                        unsigned int dbsize,
 790                        const struct fb_videomode *default_mode,
 791                        unsigned int default_bpp);
 792
 793#endif /* _LINUX_FB_H */
 794
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