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
  18 struct vm_area_struct;
  19 struct fb_info;
  20 struct device;
  21 struct file;
  22 struct videomode;
  23 struct 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 struct 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
  61 struct 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
  91 struct 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
 100 struct 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
 112 struct 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
 165 struct fb_event {
 166         struct fb_info *info;
 167         void *data;
 168 };
 169
 170 struct fb_blit_caps {
 171         u32 x;
 172         u32 y;
 173         u32 len;
 174         u32 flags;
 175 };
 176
 177 extern int fb_register_client(struct notifier_block *nb);
 178 extern int fb_unregister_client(struct notifier_block *nb);
 179 extern 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
 193 struct 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
 211 struct 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
 236 struct 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
 317 struct 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
 326 struct 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
 337 struct 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
 346 struct 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
 357 struct 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
 366 struct 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
 447 struct 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         bool skip_vt_switch; /* no VT switch on suspend/resume required */
 506 };
 507
 508 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
 509         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
 510                         + max_num * sizeof(struct aperture), GFP_KERNEL);
 511         if (!a)
 512                 return NULL;
 513         a->count = max_num;
 514         return a;
 515 }
 516
 517 #ifdef MODULE
 518 #define FBINFO_DEFAULT  FBINFO_MODULE
 519 #else
 520 #define FBINFO_DEFAULT  0
 521 #endif
 522
 523 // This will go away
 524 #define FBINFO_FLAG_MODULE      FBINFO_MODULE
 525 #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
 526
 527 /* This will go away
 528  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 529  * when it wants to turn the acceleration engine on.  This is
 530  * really a separate operation, and should be modified via sysfs.
 531  *  But for now, we leave it broken with the following define
 532  */
 533 #define STUPID_ACCELF_TEXT_SHIT
 534
 535 // This will go away
 536 #if defined(__sparc__)
 537
 538 /* We map all of our framebuffers such that big-endian accesses
 539  * are what we want, so the following is sufficient.
 540  */
 541
 542 // This will go away
 543 #define fb_readb sbus_readb
 544 #define fb_readw sbus_readw
 545 #define fb_readl sbus_readl
 546 #define fb_readq sbus_readq
 547 #define fb_writeb sbus_writeb
 548 #define fb_writew sbus_writew
 549 #define fb_writel sbus_writel
 550 #define fb_writeq sbus_writeq
 551 #define fb_memset sbus_memset_io
 552 #define fb_memcpy_fromfb sbus_memcpy_fromio
 553 #define fb_memcpy_tofb sbus_memcpy_toio
 554
 555 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
 556
 557 #define fb_readb __raw_readb
 558 #define fb_readw __raw_readw
 559 #define fb_readl __raw_readl
 560 #define fb_readq __raw_readq
 561 #define fb_writeb __raw_writeb
 562 #define fb_writew __raw_writew
 563 #define fb_writel __raw_writel
 564 #define fb_writeq __raw_writeq
 565 #define fb_memset memset_io
 566 #define fb_memcpy_fromfb memcpy_fromio
 567 #define fb_memcpy_tofb memcpy_toio
 568
 569 #else
 570
 571 #define fb_readb(addr) (*(volatile u8 *) (addr))
 572 #define fb_readw(addr) (*(volatile u16 *) (addr))
 573 #define fb_readl(addr) (*(volatile u32 *) (addr))
 574 #define fb_readq(addr) (*(volatile u64 *) (addr))
 575 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
 576 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
 577 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
 578 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
 579 #define fb_memset memset
 580 #define fb_memcpy_fromfb memcpy
 581 #define fb_memcpy_tofb memcpy
 582
 583 #endif
 584
 585 #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
 586 #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
 587                                                       (val) << (bits))
 588 #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
 589                                                       (val) >> (bits))
 590
 591     /*
 592      *  `Generic' versions of the frame buffer device operations
 593      */
 594
 595 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
 596 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
 597 extern int fb_blank(struct fb_info *info, int blank);
 598 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 599 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 600 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 601 /*
 602  * Drawing operations where framebuffer is in system RAM
 603  */
 604 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 605 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 606 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
 607 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
 608                            size_t count, loff_t *ppos);
 609 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
 610                             size_t count, loff_t *ppos);
 611
 612 /* drivers/video/fbmem.c */
 613 extern int register_framebuffer(struct fb_info *fb_info);
 614 extern int unregister_framebuffer(struct fb_info *fb_info);
 615 extern int unlink_framebuffer(struct fb_info *fb_info);
 616 extern void remove_conflicting_framebuffers(struct apertures_struct *a,
 617                                 const char *name, bool primary);
 618 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 619 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 620 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
 621 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
 622                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
 623 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 624 extern void fb_set_suspend(struct fb_info *info, int state);
 625 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
 626                               struct fb_fix_screeninfo *fix);
 627 extern int fb_get_options(const char *name, char **option);
 628 extern int fb_new_modelist(struct fb_info *info);
 629
 630 extern struct fb_info *registered_fb[FB_MAX];
 631 extern int num_registered_fb;
 632 extern struct class *fb_class;
 633
 634 extern int lock_fb_info(struct fb_info *info);
 635
 636 static inline void unlock_fb_info(struct fb_info *info)
 637 {
 638         mutex_unlock(&info->lock);
 639 }
 640
 641 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
 642                                            u8 *src, u32 s_pitch, u32 height)
 643 {
 644         int i, j;
 645
 646         d_pitch -= s_pitch;
 647
 648         for (i = height; i--; ) {
 649                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
 650                 for (j = 0; j < s_pitch; j++)
 651                         *dst++ = *src++;
 652                 dst += d_pitch;
 653         }
 654 }
 655
 656 /* drivers/video/fb_defio.c */
 657 extern void fb_deferred_io_init(struct fb_info *info);
 658 extern void fb_deferred_io_open(struct fb_info *info,
 659                                 struct inode *inode,
 660                                 struct file *file);
 661 extern void fb_deferred_io_cleanup(struct fb_info *info);
 662 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
 663                                 loff_t end, int datasync);
 664
 665 static inline bool fb_be_math(struct fb_info *info)
 666 {
 667 #ifdef CONFIG_FB_FOREIGN_ENDIAN
 668 #if defined(CONFIG_FB_BOTH_ENDIAN)
 669         return info->flags & FBINFO_BE_MATH;
 670 #elif defined(CONFIG_FB_BIG_ENDIAN)
 671         return true;
 672 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
 673         return false;
 674 #endif /* CONFIG_FB_BOTH_ENDIAN */
 675 #else
 676 #ifdef __BIG_ENDIAN
 677         return true;
 678 #else
 679         return false;
 680 #endif /* __BIG_ENDIAN */
 681 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
 682 }
 683
 684 /* drivers/video/fbsysfs.c */
 685 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
 686 extern void framebuffer_release(struct fb_info *info);
 687 extern int fb_init_device(struct fb_info *fb_info);
 688 extern void fb_cleanup_device(struct fb_info *head);
 689 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
 690
 691 /* drivers/video/fbmon.c */
 692 #define FB_MAXTIMINGS           0
 693 #define FB_VSYNCTIMINGS         1
 694 #define FB_HSYNCTIMINGS         2
 695 #define FB_DCLKTIMINGS          3
 696 #define FB_IGNOREMON            0x100
 697
 698 #define FB_MODE_IS_UNKNOWN      0
 699 #define FB_MODE_IS_DETAILED     1
 700 #define FB_MODE_IS_STANDARD     2
 701 #define FB_MODE_IS_VESA         4
 702 #define FB_MODE_IS_CALCULATED   8
 703 #define FB_MODE_IS_FIRST        16
 704 #define FB_MODE_IS_FROM_VAR     32
 705
 706 extern int fbmon_dpms(const struct fb_info *fb_info);
 707 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
 708                        struct fb_info *info);
 709 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
 710                             struct fb_info *info);
 711 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
 712 extern const unsigned char *fb_firmware_edid(struct device *device);
 713 extern void fb_edid_to_monspecs(unsigned char *edid,
 714                                 struct fb_monspecs *specs);
 715 extern void fb_edid_add_monspecs(unsigned char *edid,
 716                                  struct fb_monspecs *specs);
 717 extern void fb_destroy_modedb(struct fb_videomode *modedb);
 718 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
 719 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
 720
 721 extern int of_get_fb_videomode(struct device_node *np,
 722                                struct fb_videomode *fb,
 723                                int index);
 724 extern int fb_videomode_from_videomode(const struct videomode *vm,
 725                                        struct fb_videomode *fbmode);
 726
 727 /* drivers/video/modedb.c */
 728 #define VESA_MODEDB_SIZE 34
 729 extern void fb_var_to_videomode(struct fb_videomode *mode,
 730                                 const struct fb_var_screeninfo *var);
 731 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
 732                                 const struct fb_videomode *mode);
 733 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
 734                             const struct fb_videomode *mode2);
 735 extern int fb_add_videomode(const struct fb_videomode *mode,
 736                             struct list_head *head);
 737 extern void fb_delete_videomode(const struct fb_videomode *mode,
 738                                 struct list_head *head);
 739 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
 740                                                 struct list_head *head);
 741 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
 742                                                     struct list_head *head);
 743 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
 744                                                        struct list_head *head);
 745 extern void fb_destroy_modelist(struct list_head *head);
 746 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
 747                                      struct list_head *head);
 748 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
 749                                                        struct list_head *head);
 750
 751 /* drivers/video/fbcmap.c */
 752 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
 753 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
 754 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
 755 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
 756 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
 757 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
 758 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
 759 extern const struct fb_cmap *fb_default_cmap(int len);
 760 extern void fb_invert_cmaps(void);
 761
 762 struct fb_videomode {
 763         const char *name;       /* optional */
 764         u32 refresh;            /* optional */
 765         u32 xres;
 766         u32 yres;
 767         u32 pixclock;
 768         u32 left_margin;
 769         u32 right_margin;
 770         u32 upper_margin;
 771         u32 lower_margin;
 772         u32 hsync_len;
 773         u32 vsync_len;
 774         u32 sync;
 775         u32 vmode;
 776         u32 flag;
 777 };
 778
 779 extern const char *fb_mode_option;
 780 extern const struct fb_videomode vesa_modes[];
 781 extern const struct fb_videomode cea_modes[64];
 782
 783 struct fb_modelist {
 784         struct list_head list;
 785         struct fb_videomode mode;
 786 };
 787
 788 extern int fb_find_mode(struct fb_var_screeninfo *var,
 789                         struct fb_info *info, const char *mode_option,
 790                         const struct fb_videomode *db,
 791                         unsigned int dbsize,
 792                         const struct fb_videomode *default_mode,
 793                         unsigned int default_bpp);
 794
 795 #endif /* _LINUX_FB_H */