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;
  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 */
  50#define FB_MISC_HDMI            4
  51struct fb_chroma {
  52        __u32 redx;     /* in fraction of 1024 */
  53        __u32 greenx;
  54        __u32 bluex;
  55        __u32 whitex;
  56        __u32 redy;
  57        __u32 greeny;
  58        __u32 bluey;
  59        __u32 whitey;
  60};
  61
  62struct fb_monspecs {
  63        struct fb_chroma chroma;
  64        struct fb_videomode *modedb;    /* mode database */
  65        __u8  manufacturer[4];          /* Manufacturer */
  66        __u8  monitor[14];              /* Monitor String */
  67        __u8  serial_no[14];            /* Serial Number */
  68        __u8  ascii[14];                /* ? */
  69        __u32 modedb_len;               /* mode database length */
  70        __u32 model;                    /* Monitor Model */
  71        __u32 serial;                   /* Serial Number - Integer */
  72        __u32 year;                     /* Year manufactured */
  73        __u32 week;                     /* Week Manufactured */
  74        __u32 hfmin;                    /* hfreq lower limit (Hz) */
  75        __u32 hfmax;                    /* hfreq upper limit (Hz) */
  76        __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
  77        __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
  78        __u16 input;                    /* display type - see FB_DISP_* */
  79        __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
  80        __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
  81        __u16 vfmin;                    /* vfreq lower limit (Hz) */
  82        __u16 vfmax;                    /* vfreq upper limit (Hz) */
  83        __u16 gamma;                    /* Gamma - in fractions of 100 */
  84        __u16 gtf       : 1;            /* supports GTF */
  85        __u16 misc;                     /* Misc flags - see FB_MISC_* */
  86        __u8  version;                  /* EDID version... */
  87        __u8  revision;                 /* ...and revision */
  88        __u8  max_x;                    /* Maximum horizontal size (cm) */
  89        __u8  max_y;                    /* Maximum vertical size (cm) */
  90};
  91
  92struct fb_cmap_user {
  93        __u32 start;                    /* First entry  */
  94        __u32 len;                      /* Number of entries */
  95        __u16 __user *red;              /* Red values   */
  96        __u16 __user *green;
  97        __u16 __user *blue;
  98        __u16 __user *transp;           /* transparency, can be NULL */
  99};
 100
 101struct fb_image_user {
 102        __u32 dx;                       /* Where to place image */
 103        __u32 dy;
 104        __u32 width;                    /* Size of image */
 105        __u32 height;
 106        __u32 fg_color;                 /* Only used when a mono bitmap */
 107        __u32 bg_color;
 108        __u8  depth;                    /* Depth of the image */
 109        const char __user *data;        /* Pointer to image data */
 110        struct fb_cmap_user cmap;       /* color map info */
 111};
 112
 113struct fb_cursor_user {
 114        __u16 set;                      /* what to set */
 115        __u16 enable;                   /* cursor on/off */
 116        __u16 rop;                      /* bitop operation */
 117        const char __user *mask;        /* cursor mask bits */
 118        struct fbcurpos hot;            /* cursor hot spot */
 119        struct fb_image_user image;     /* Cursor image */
 120};
 121
 122/*
 123 * Register/unregister for framebuffer events
 124 */
 125
 126/*      The resolution of the passed in fb_info about to change */ 
 127#define FB_EVENT_MODE_CHANGE            0x01
 128/*      The display on this fb_info is beeing suspended, no access to the
 129 *      framebuffer is allowed any more after that call returns
 130 */
 131#define FB_EVENT_SUSPEND                0x02
 132/*      The display on this fb_info was resumed, you can restore the display
 133 *      if you own it
 134 */
 135#define FB_EVENT_RESUME                 0x03
 136/*      An entry from the modelist was removed */
 137#define FB_EVENT_MODE_DELETE            0x04
 138/*      A driver registered itself */
 139#define FB_EVENT_FB_REGISTERED          0x05
 140/*      A driver unregistered itself */
 141#define FB_EVENT_FB_UNREGISTERED        0x06
 142/*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
 143#define FB_EVENT_GET_CONSOLE_MAP        0x07
 144/*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
 145#define FB_EVENT_SET_CONSOLE_MAP        0x08
 146/*      A hardware display blank change occurred */
 147#define FB_EVENT_BLANK                  0x09
 148/*      Private modelist is to be replaced */
 149#define FB_EVENT_NEW_MODELIST           0x0A
 150/*      The resolution of the passed in fb_info about to change and
 151        all vc's should be changed         */
 152#define FB_EVENT_MODE_CHANGE_ALL        0x0B
 153/*      A software display blank change occurred */
 154#define FB_EVENT_CONBLANK               0x0C
 155/*      Get drawing requirements        */
 156#define FB_EVENT_GET_REQ                0x0D
 157/*      Unbind from the console if possible */
 158#define FB_EVENT_FB_UNBIND              0x0E
 159/*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga_switcheroo */
 160#define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
 161/*      A hardware display blank early change occured */
 162#define FB_EARLY_EVENT_BLANK            0x10
 163/*      A hardware display blank revert early change occured */
 164#define FB_R_EARLY_EVENT_BLANK          0x11
 165
 166struct fb_event {
 167        struct fb_info *info;
 168        void *data;
 169};
 170
 171struct fb_blit_caps {
 172        u32 x;
 173        u32 y;
 174        u32 len;
 175        u32 flags;
 176};
 177
 178#ifdef CONFIG_FB_NOTIFY
 179extern int fb_register_client(struct notifier_block *nb);
 180extern int fb_unregister_client(struct notifier_block *nb);
 181extern int fb_notifier_call_chain(unsigned long val, void *v);
 182#else
 183static inline int fb_register_client(struct notifier_block *nb)
 184{
 185        return 0;
 186};
 187
 188static inline int fb_unregister_client(struct notifier_block *nb)
 189{
 190        return 0;
 191};
 192
 193static inline int fb_notifier_call_chain(unsigned long val, void *v)
 194{
 195        return 0;
 196};
 197#endif
 198
 199/*
 200 * Pixmap structure definition
 201 *
 202 * The purpose of this structure is to translate data
 203 * from the hardware independent format of fbdev to what
 204 * format the hardware needs.
 205 */
 206
 207#define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
 208#define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
 209#define FB_PIXMAP_IO      4     /* memory is iomapped       */
 210#define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
 211
 212struct fb_pixmap {
 213        u8  *addr;              /* pointer to memory                    */
 214        u32 size;               /* size of buffer in bytes              */
 215        u32 offset;             /* current offset to buffer             */
 216        u32 buf_align;          /* byte alignment of each bitmap        */
 217        u32 scan_align;         /* alignment per scanline               */
 218        u32 access_align;       /* alignment per read/write (bits)      */
 219        u32 flags;              /* see FB_PIXMAP_*                      */
 220        u32 blit_x;             /* supported bit block dimensions (1-32)*/
 221        u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
 222                                /*         blit_y = 1 << (height - 1)   */
 223                                /* if 0, will be set to 0xffffffff (all)*/
 224        /* access methods */
 225        void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
 226        void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
 227};
 228
 229#ifdef CONFIG_FB_DEFERRED_IO
 230struct fb_deferred_io {
 231        /* delay between mkwrite and deferred handler */
 232        unsigned long delay;
 233        struct mutex lock; /* mutex that protects the page list */
 234        struct list_head pagelist; /* list of touched pages */
 235        /* callback */
 236        void (*first_io)(struct fb_info *info);
 237        void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
 238};
 239#endif
 240
 241/*
 242 * Frame buffer operations
 243 *
 244 * LOCKING NOTE: those functions must _ALL_ be called with the console
 245 * semaphore held, this is the only suitable locking mechanism we have
 246 * in 2.6. Some may be called at interrupt time at this point though.
 247 *
 248 * The exception to this is the debug related hooks.  Putting the fb
 249 * into a debug state (e.g. flipping to the kernel console) and restoring
 250 * it must be done in a lock-free manner, so low level drivers should
 251 * keep track of the initial console (if applicable) and may need to
 252 * perform direct, unlocked hardware writes in these hooks.
 253 */
 254
 255struct fb_ops {
 256        /* open/release and usage marking */
 257        struct module *owner;
 258        int (*fb_open)(struct fb_info *info, int user);
 259        int (*fb_release)(struct fb_info *info, int user);
 260
 261        /* For framebuffers with strange non linear layouts or that do not
 262         * work with normal memory mapped access
 263         */
 264        ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
 265                           size_t count, loff_t *ppos);
 266        ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
 267                            size_t count, loff_t *ppos);
 268
 269        /* checks var and eventually tweaks it to something supported,
 270         * DO NOT MODIFY PAR */
 271        int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
 272
 273        /* set the video mode according to info->var */
 274        int (*fb_set_par)(struct fb_info *info);
 275
 276        /* set color register */
 277        int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
 278                            unsigned blue, unsigned transp, struct fb_info *info);
 279
 280        /* set color registers in batch */
 281        int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
 282
 283        /* blank display */
 284        int (*fb_blank)(int blank, struct fb_info *info);
 285
 286        /* pan display */
 287        int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
 288
 289        /* Draws a rectangle */
 290        void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
 291        /* Copy data from area to another */
 292        void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
 293        /* Draws a image to the display */
 294        void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
 295
 296        /* Draws cursor */
 297        int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
 298
 299        /* wait for blit idle, optional */
 300        int (*fb_sync)(struct fb_info *info);
 301
 302        /* perform fb specific ioctl (optional) */
 303        int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
 304                        unsigned long arg);
 305
 306        /* Handle 32bit compat ioctl (optional) */
 307        int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
 308                        unsigned long arg);
 309
 310        /* perform fb specific mmap */
 311        int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
 312
 313        /* get capability given var */
 314        void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
 315                            struct fb_var_screeninfo *var);
 316
 317        /* teardown any resources to do with this framebuffer */
 318        void (*fb_destroy)(struct fb_info *info);
 319
 320        /* called at KDB enter and leave time to prepare the console */
 321        int (*fb_debug_enter)(struct fb_info *info);
 322        int (*fb_debug_leave)(struct fb_info *info);
 323};
 324
 325#ifdef CONFIG_FB_TILEBLITTING
 326#define FB_TILE_CURSOR_NONE        0
 327#define FB_TILE_CURSOR_UNDERLINE   1
 328#define FB_TILE_CURSOR_LOWER_THIRD 2
 329#define FB_TILE_CURSOR_LOWER_HALF  3
 330#define FB_TILE_CURSOR_TWO_THIRDS  4
 331#define FB_TILE_CURSOR_BLOCK       5
 332
 333struct fb_tilemap {
 334        __u32 width;                /* width of each tile in pixels */
 335        __u32 height;               /* height of each tile in scanlines */
 336        __u32 depth;                /* color depth of each tile */
 337        __u32 length;               /* number of tiles in the map */
 338        const __u8 *data;           /* actual tile map: a bitmap array, packed
 339                                       to the nearest byte */
 340};
 341
 342struct fb_tilerect {
 343        __u32 sx;                   /* origin in the x-axis */
 344        __u32 sy;                   /* origin in the y-axis */
 345        __u32 width;                /* number of tiles in the x-axis */
 346        __u32 height;               /* number of tiles in the y-axis */
 347        __u32 index;                /* what tile to use: index to tile map */
 348        __u32 fg;                   /* foreground color */
 349        __u32 bg;                   /* background color */
 350        __u32 rop;                  /* raster operation */
 351};
 352
 353struct fb_tilearea {
 354        __u32 sx;                   /* source origin in the x-axis */
 355        __u32 sy;                   /* source origin in the y-axis */
 356        __u32 dx;                   /* destination origin in the x-axis */
 357        __u32 dy;                   /* destination origin in the y-axis */
 358        __u32 width;                /* number of tiles in the x-axis */
 359        __u32 height;               /* number of tiles in the y-axis */
 360};
 361
 362struct fb_tileblit {
 363        __u32 sx;                   /* origin in the x-axis */
 364        __u32 sy;                   /* origin in the y-axis */
 365        __u32 width;                /* number of tiles in the x-axis */
 366        __u32 height;               /* number of tiles in the y-axis */
 367        __u32 fg;                   /* foreground color */
 368        __u32 bg;                   /* background color */
 369        __u32 length;               /* number of tiles to draw */
 370        __u32 *indices;             /* array of indices to tile map */
 371};
 372
 373struct fb_tilecursor {
 374        __u32 sx;                   /* cursor position in the x-axis */
 375        __u32 sy;                   /* cursor position in the y-axis */
 376        __u32 mode;                 /* 0 = erase, 1 = draw */
 377        __u32 shape;                /* see FB_TILE_CURSOR_* */
 378        __u32 fg;                   /* foreground color */
 379        __u32 bg;                   /* background color */
 380};
 381
 382struct fb_tile_ops {
 383        /* set tile characteristics */
 384        void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
 385
 386        /* all dimensions from hereon are in terms of tiles */
 387
 388        /* move a rectangular region of tiles from one area to another*/
 389        void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
 390        /* fill a rectangular region with a tile */
 391        void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
 392        /* copy an array of tiles */
 393        void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
 394        /* cursor */
 395        void (*fb_tilecursor)(struct fb_info *info,
 396                              struct fb_tilecursor *cursor);
 397        /* get maximum length of the tile map */
 398        int (*fb_get_tilemax)(struct fb_info *info);
 399};
 400#endif /* CONFIG_FB_TILEBLITTING */
 401
 402/* FBINFO_* = fb_info.flags bit flags */
 403#define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
 404#define FBINFO_HWACCEL_DISABLED 0x0002
 405        /* When FBINFO_HWACCEL_DISABLED is set:
 406         *  Hardware acceleration is turned off.  Software implementations
 407         *  of required functions (copyarea(), fillrect(), and imageblit())
 408         *  takes over; acceleration engine should be in a quiescent state */
 409
 410/* hints */
 411#define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
 412#define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
 413#define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
 414
 415/* hardware supported ops */
 416/*  semantics: when a bit is set, it indicates that the operation is
 417 *   accelerated by hardware.
 418 *  required functions will still work even if the bit is not set.
 419 *  optional functions may not even exist if the flag bit is not set.
 420 */
 421#define FBINFO_HWACCEL_NONE             0x0000
 422#define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
 423#define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
 424#define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
 425#define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
 426#define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
 427#define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
 428#define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
 429
 430#define FBINFO_MISC_USEREVENT          0x10000 /* event request
 431                                                  from userspace */
 432#define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
 433
 434/* A driver may set this flag to indicate that it does want a set_par to be
 435 * called every time when fbcon_switch is executed. The advantage is that with
 436 * this flag set you can really be sure that set_par is always called before
 437 * any of the functions dependent on the correct hardware state or altering
 438 * that state, even if you are using some broken X releases. The disadvantage
 439 * is that it introduces unwanted delays to every console switch if set_par
 440 * is slow. It is a good idea to try this flag in the drivers initialization
 441 * code whenever there is a bug report related to switching between X and the
 442 * framebuffer console.
 443 */
 444#define FBINFO_MISC_ALWAYS_SETPAR   0x40000
 445
 446/* where the fb is a firmware driver, and can be replaced with a proper one */
 447#define FBINFO_MISC_FIRMWARE        0x80000
 448/*
 449 * Host and GPU endianness differ.
 450 */
 451#define FBINFO_FOREIGN_ENDIAN   0x100000
 452/*
 453 * Big endian math. This is the same flags as above, but with different
 454 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
 455 * and host endianness. Drivers should not use this flag.
 456 */
 457#define FBINFO_BE_MATH  0x100000
 458
 459/* report to the VT layer that this fb driver can accept forced console
 460   output like oopses */
 461#define FBINFO_CAN_FORCE_OUTPUT     0x200000
 462
 463struct fb_info {
 464        atomic_t count;
 465        int node;
 466        int flags;
 467        struct mutex lock;              /* Lock for open/release/ioctl funcs */
 468        struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
 469        struct fb_var_screeninfo var;   /* Current var */
 470        struct fb_fix_screeninfo fix;   /* Current fix */
 471        struct fb_monspecs monspecs;    /* Current Monitor specs */
 472        struct work_struct queue;       /* Framebuffer event queue */
 473        struct fb_pixmap pixmap;        /* Image hardware mapper */
 474        struct fb_pixmap sprite;        /* Cursor hardware mapper */
 475        struct fb_cmap cmap;            /* Current cmap */
 476        struct list_head modelist;      /* mode list */
 477        struct fb_videomode *mode;      /* current mode */
 478
 479#ifdef CONFIG_FB_BACKLIGHT
 480        /* assigned backlight device */
 481        /* set before framebuffer registration, 
 482           remove after unregister */
 483        struct backlight_device *bl_dev;
 484
 485        /* Backlight level curve */
 486        struct mutex bl_curve_mutex;    
 487        u8 bl_curve[FB_BACKLIGHT_LEVELS];
 488#endif
 489#ifdef CONFIG_FB_DEFERRED_IO
 490        struct delayed_work deferred_work;
 491        struct fb_deferred_io *fbdefio;
 492#endif
 493
 494        struct fb_ops *fbops;
 495        struct device *device;          /* This is the parent */
 496        struct device *dev;             /* This is this fb device */
 497        int class_flag;                    /* private sysfs flags */
 498#ifdef CONFIG_FB_TILEBLITTING
 499        struct fb_tile_ops *tileops;    /* Tile Blitting */
 500#endif
 501        union {
 502                char __iomem *screen_base;      /* Virtual address */
 503                char *screen_buffer;
 504        };
 505        unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */ 
 506        void *pseudo_palette;           /* Fake palette of 16 colors */ 
 507#define FBINFO_STATE_RUNNING    0
 508#define FBINFO_STATE_SUSPENDED  1
 509        u32 state;                      /* Hardware state i.e suspend */
 510        void *fbcon_par;                /* fbcon use-only private area */
 511        /* From here on everything is device dependent */
 512        void *par;
 513        /* we need the PCI or similar aperture base/size not
 514           smem_start/size as smem_start may just be an object
 515           allocated inside the aperture so may not actually overlap */
 516        struct apertures_struct {
 517                unsigned int count;
 518                struct aperture {
 519                        resource_size_t base;
 520                        resource_size_t size;
 521                } ranges[0];
 522        } *apertures;
 523
 524        bool skip_vt_switch; /* no VT switch on suspend/resume required */
 525};
 526
 527static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
 528        struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
 529                        + max_num * sizeof(struct aperture), GFP_KERNEL);
 530        if (!a)
 531                return NULL;
 532        a->count = max_num;
 533        return a;
 534}
 535
 536#ifdef MODULE
 537#define FBINFO_DEFAULT  FBINFO_MODULE
 538#else
 539#define FBINFO_DEFAULT  0
 540#endif
 541
 542// This will go away
 543#define FBINFO_FLAG_MODULE      FBINFO_MODULE
 544#define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
 545
 546/* This will go away
 547 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 548 * when it wants to turn the acceleration engine on.  This is
 549 * really a separate operation, and should be modified via sysfs.
 550 *  But for now, we leave it broken with the following define
 551 */
 552#define STUPID_ACCELF_TEXT_SHIT
 553
 554// This will go away
 555#if defined(__sparc__)
 556
 557/* We map all of our framebuffers such that big-endian accesses
 558 * are what we want, so the following is sufficient.
 559 */
 560
 561// This will go away
 562#define fb_readb sbus_readb
 563#define fb_readw sbus_readw
 564#define fb_readl sbus_readl
 565#define fb_readq sbus_readq
 566#define fb_writeb sbus_writeb
 567#define fb_writew sbus_writew
 568#define fb_writel sbus_writel
 569#define fb_writeq sbus_writeq
 570#define fb_memset sbus_memset_io
 571#define fb_memcpy_fromfb sbus_memcpy_fromio
 572#define fb_memcpy_tofb sbus_memcpy_toio
 573
 574#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
 575
 576#define fb_readb __raw_readb
 577#define fb_readw __raw_readw
 578#define fb_readl __raw_readl
 579#define fb_readq __raw_readq
 580#define fb_writeb __raw_writeb
 581#define fb_writew __raw_writew
 582#define fb_writel __raw_writel
 583#define fb_writeq __raw_writeq
 584#define fb_memset memset_io
 585#define fb_memcpy_fromfb memcpy_fromio
 586#define fb_memcpy_tofb memcpy_toio
 587
 588#else
 589
 590#define fb_readb(addr) (*(volatile u8 *) (addr))
 591#define fb_readw(addr) (*(volatile u16 *) (addr))
 592#define fb_readl(addr) (*(volatile u32 *) (addr))
 593#define fb_readq(addr) (*(volatile u64 *) (addr))
 594#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
 595#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
 596#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
 597#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
 598#define fb_memset memset
 599#define fb_memcpy_fromfb memcpy
 600#define fb_memcpy_tofb memcpy
 601
 602#endif
 603
 604#define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
 605#define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
 606                                                      (val) << (bits))
 607#define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
 608                                                      (val) >> (bits))
 609
 610    /*
 611     *  `Generic' versions of the frame buffer device operations
 612     */
 613
 614extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
 615extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
 616extern int fb_blank(struct fb_info *info, int blank);
 617extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
 618extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
 619extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 620/*
 621 * Drawing operations where framebuffer is in system RAM
 622 */
 623extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 624extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 625extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
 626extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
 627                           size_t count, loff_t *ppos);
 628extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
 629                            size_t count, loff_t *ppos);
 630
 631/* drivers/video/fbmem.c */
 632extern int register_framebuffer(struct fb_info *fb_info);
 633extern int unregister_framebuffer(struct fb_info *fb_info);
 634extern int unlink_framebuffer(struct fb_info *fb_info);
 635extern int remove_conflicting_framebuffers(struct apertures_struct *a,
 636                                           const char *name, bool primary);
 637extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 638extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 639extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
 640extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
 641                                u32 height, u32 shift_high, u32 shift_low, u32 mod);
 642extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 643extern void fb_set_suspend(struct fb_info *info, int state);
 644extern int fb_get_color_depth(struct fb_var_screeninfo *var,
 645                              struct fb_fix_screeninfo *fix);
 646extern int fb_get_options(const char *name, char **option);
 647extern int fb_new_modelist(struct fb_info *info);
 648
 649extern struct fb_info *registered_fb[FB_MAX];
 650extern int num_registered_fb;
 651extern struct class *fb_class;
 652
 653extern int lock_fb_info(struct fb_info *info);
 654
 655static inline void unlock_fb_info(struct fb_info *info)
 656{
 657        mutex_unlock(&info->lock);
 658}
 659
 660static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
 661                                           u8 *src, u32 s_pitch, u32 height)
 662{
 663        u32 i, j;
 664
 665        d_pitch -= s_pitch;
 666
 667        for (i = height; i--; ) {
 668                /* s_pitch is a few bytes at the most, memcpy is suboptimal */
 669                for (j = 0; j < s_pitch; j++)
 670                        *dst++ = *src++;
 671                dst += d_pitch;
 672        }
 673}
 674
 675/* drivers/video/fb_defio.c */
 676int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma);
 677extern void fb_deferred_io_init(struct fb_info *info);
 678extern void fb_deferred_io_open(struct fb_info *info,
 679                                struct inode *inode,
 680                                struct file *file);
 681extern void fb_deferred_io_cleanup(struct fb_info *info);
 682extern int fb_deferred_io_fsync(struct file *file, loff_t start,
 683                                loff_t end, int datasync);
 684
 685static inline bool fb_be_math(struct fb_info *info)
 686{
 687#ifdef CONFIG_FB_FOREIGN_ENDIAN
 688#if defined(CONFIG_FB_BOTH_ENDIAN)
 689        return info->flags & FBINFO_BE_MATH;
 690#elif defined(CONFIG_FB_BIG_ENDIAN)
 691        return true;
 692#elif defined(CONFIG_FB_LITTLE_ENDIAN)
 693        return false;
 694#endif /* CONFIG_FB_BOTH_ENDIAN */
 695#else
 696#ifdef __BIG_ENDIAN
 697        return true;
 698#else
 699        return false;
 700#endif /* __BIG_ENDIAN */
 701#endif /* CONFIG_FB_FOREIGN_ENDIAN */
 702}
 703
 704/* drivers/video/fbsysfs.c */
 705extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
 706extern void framebuffer_release(struct fb_info *info);
 707extern int fb_init_device(struct fb_info *fb_info);
 708extern void fb_cleanup_device(struct fb_info *head);
 709extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
 710
 711/* drivers/video/fbmon.c */
 712#define FB_MAXTIMINGS           0
 713#define FB_VSYNCTIMINGS         1
 714#define FB_HSYNCTIMINGS         2
 715#define FB_DCLKTIMINGS          3
 716#define FB_IGNOREMON            0x100
 717
 718#define FB_MODE_IS_UNKNOWN      0
 719#define FB_MODE_IS_DETAILED     1
 720#define FB_MODE_IS_STANDARD     2
 721#define FB_MODE_IS_VESA         4
 722#define FB_MODE_IS_CALCULATED   8
 723#define FB_MODE_IS_FIRST        16
 724#define FB_MODE_IS_FROM_VAR     32
 725
 726extern int fbmon_dpms(const struct fb_info *fb_info);
 727extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
 728                       struct fb_info *info);
 729extern int fb_validate_mode(const struct fb_var_screeninfo *var,
 730                            struct fb_info *info);
 731extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
 732extern const unsigned char *fb_firmware_edid(struct device *device);
 733extern void fb_edid_to_monspecs(unsigned char *edid,
 734                                struct fb_monspecs *specs);
 735extern void fb_edid_add_monspecs(unsigned char *edid,
 736                                 struct fb_monspecs *specs);
 737extern void fb_destroy_modedb(struct fb_videomode *modedb);
 738extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
 739extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
 740
 741extern int of_get_fb_videomode(struct device_node *np,
 742                               struct fb_videomode *fb,
 743                               int index);
 744extern int fb_videomode_from_videomode(const struct videomode *vm,
 745                                       struct fb_videomode *fbmode);
 746
 747/* drivers/video/modedb.c */
 748#define VESA_MODEDB_SIZE 43
 749#define DMT_SIZE 0x50
 750
 751extern void fb_var_to_videomode(struct fb_videomode *mode,
 752                                const struct fb_var_screeninfo *var);
 753extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
 754                                const struct fb_videomode *mode);
 755extern int fb_mode_is_equal(const struct fb_videomode *mode1,
 756                            const struct fb_videomode *mode2);
 757extern int fb_add_videomode(const struct fb_videomode *mode,
 758                            struct list_head *head);
 759extern void fb_delete_videomode(const struct fb_videomode *mode,
 760                                struct list_head *head);
 761extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
 762                                                struct list_head *head);
 763extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
 764                                                    struct list_head *head);
 765extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
 766                                                       struct list_head *head);
 767extern void fb_destroy_modelist(struct list_head *head);
 768extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
 769                                     struct list_head *head);
 770extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
 771                                                       struct list_head *head);
 772
 773/* drivers/video/fbcmap.c */
 774extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
 775extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
 776extern void fb_dealloc_cmap(struct fb_cmap *cmap);
 777extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
 778extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
 779extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
 780extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
 781extern const struct fb_cmap *fb_default_cmap(int len);
 782extern void fb_invert_cmaps(void);
 783
 784struct fb_videomode {
 785        const char *name;       /* optional */
 786        u32 refresh;            /* optional */
 787        u32 xres;
 788        u32 yres;
 789        u32 pixclock;
 790        u32 left_margin;
 791        u32 right_margin;
 792        u32 upper_margin;
 793        u32 lower_margin;
 794        u32 hsync_len;
 795        u32 vsync_len;
 796        u32 sync;
 797        u32 vmode;
 798        u32 flag;
 799};
 800
 801struct dmt_videomode {
 802        u32 dmt_id;
 803        u32 std_2byte_code;
 804        u32 cvt_3byte_code;
 805        const struct fb_videomode *mode;
 806};
 807
 808extern const char *fb_mode_option;
 809extern const struct fb_videomode vesa_modes[];
 810extern const struct fb_videomode cea_modes[65];
 811extern const struct dmt_videomode dmt_modes[];
 812
 813struct fb_modelist {
 814        struct list_head list;
 815        struct fb_videomode mode;
 816};
 817
 818extern int fb_find_mode(struct fb_var_screeninfo *var,
 819                        struct fb_info *info, const char *mode_option,
 820                        const struct fb_videomode *db,
 821                        unsigned int dbsize,
 822                        const struct fb_videomode *default_mode,
 823                        unsigned int default_bpp);
 824
 825/* Convenience logging macros */
 826#define fb_err(fb_info, fmt, ...)                                       \
 827        pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 828#define fb_notice(info, fmt, ...)                                       \
 829        pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 830#define fb_warn(fb_info, fmt, ...)                                      \
 831        pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 832#define fb_info(fb_info, fmt, ...)                                      \
 833        pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 834#define fb_dbg(fb_info, fmt, ...)                                       \
 835        pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 836
 837#endif /* _LINUX_FB_H */
 838