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 #define FB_MISC_HDMI            4
  51 struct 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
  62 struct 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
  92 struct 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
 101 struct 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
 113 struct 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
 166 struct fb_event {
 167         struct fb_info *info;
 168         void *data;
 169 };
 170
 171 struct fb_blit_caps {
 172         u32 x;
 173         u32 y;
 174         u32 len;
 175         u32 flags;
 176 };
 177
 178 #ifdef CONFIG_FB_NOTIFY
 179 extern int fb_register_client(struct notifier_block *nb);
 180 extern int fb_unregister_client(struct notifier_block *nb);
 181 extern int fb_notifier_call_chain(unsigned long val, void *v);
 182 #else
 183 static inline int fb_register_client(struct notifier_block *nb)
 184 {
 185         return 0;
 186 };
 187
 188 static inline int fb_unregister_client(struct notifier_block *nb)
 189 {
 190         return 0;
 191 };
 192
 193 static 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
 212 struct 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
 230 struct 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
 255 struct 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         /* Rotates the display */
 300         void (*fb_rotate)(struct fb_info *info, int angle);
 301
 302         /* wait for blit idle, optional */
 303         int (*fb_sync)(struct fb_info *info);
 304
 305         /* perform fb specific ioctl (optional) */
 306         int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
 307                         unsigned long arg);
 308
 309         /* Handle 32bit compat ioctl (optional) */
 310         int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
 311                         unsigned long arg);
 312
 313         /* perform fb specific mmap */
 314         int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
 315
 316         /* get capability given var */
 317         void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
 318                             struct fb_var_screeninfo *var);
 319
 320         /* teardown any resources to do with this framebuffer */
 321         void (*fb_destroy)(struct fb_info *info);
 322
 323         /* called at KDB enter and leave time to prepare the console */
 324         int (*fb_debug_enter)(struct fb_info *info);
 325         int (*fb_debug_leave)(struct fb_info *info);
 326 };
 327
 328 #ifdef CONFIG_FB_TILEBLITTING
 329 #define FB_TILE_CURSOR_NONE        0
 330 #define FB_TILE_CURSOR_UNDERLINE   1
 331 #define FB_TILE_CURSOR_LOWER_THIRD 2
 332 #define FB_TILE_CURSOR_LOWER_HALF  3
 333 #define FB_TILE_CURSOR_TWO_THIRDS  4
 334 #define FB_TILE_CURSOR_BLOCK       5
 335
 336 struct fb_tilemap {
 337         __u32 width;                /* width of each tile in pixels */
 338         __u32 height;               /* height of each tile in scanlines */
 339         __u32 depth;                /* color depth of each tile */
 340         __u32 length;               /* number of tiles in the map */
 341         const __u8 *data;           /* actual tile map: a bitmap array, packed
 342                                        to the nearest byte */
 343 };
 344
 345 struct fb_tilerect {
 346         __u32 sx;                   /* origin in the x-axis */
 347         __u32 sy;                   /* origin in the y-axis */
 348         __u32 width;                /* number of tiles in the x-axis */
 349         __u32 height;               /* number of tiles in the y-axis */
 350         __u32 index;                /* what tile to use: index to tile map */
 351         __u32 fg;                   /* foreground color */
 352         __u32 bg;                   /* background color */
 353         __u32 rop;                  /* raster operation */
 354 };
 355
 356 struct fb_tilearea {
 357         __u32 sx;                   /* source origin in the x-axis */
 358         __u32 sy;                   /* source origin in the y-axis */
 359         __u32 dx;                   /* destination origin in the x-axis */
 360         __u32 dy;                   /* destination origin in the y-axis */
 361         __u32 width;                /* number of tiles in the x-axis */
 362         __u32 height;               /* number of tiles in the y-axis */
 363 };
 364
 365 struct fb_tileblit {
 366         __u32 sx;                   /* origin in the x-axis */
 367         __u32 sy;                   /* origin in the y-axis */
 368         __u32 width;                /* number of tiles in the x-axis */
 369         __u32 height;               /* number of tiles in the y-axis */
 370         __u32 fg;                   /* foreground color */
 371         __u32 bg;                   /* background color */
 372         __u32 length;               /* number of tiles to draw */
 373         __u32 *indices;             /* array of indices to tile map */
 374 };
 375
 376 struct fb_tilecursor {
 377         __u32 sx;                   /* cursor position in the x-axis */
 378         __u32 sy;                   /* cursor position in the y-axis */
 379         __u32 mode;                 /* 0 = erase, 1 = draw */
 380         __u32 shape;                /* see FB_TILE_CURSOR_* */
 381         __u32 fg;                   /* foreground color */
 382         __u32 bg;                   /* background color */
 383 };
 384
 385 struct fb_tile_ops {
 386         /* set tile characteristics */
 387         void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
 388
 389         /* all dimensions from hereon are in terms of tiles */
 390
 391         /* move a rectangular region of tiles from one area to another*/
 392         void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
 393         /* fill a rectangular region with a tile */
 394         void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
 395         /* copy an array of tiles */
 396         void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
 397         /* cursor */
 398         void (*fb_tilecursor)(struct fb_info *info,
 399                               struct fb_tilecursor *cursor);
 400         /* get maximum length of the tile map */
 401         int (*fb_get_tilemax)(struct fb_info *info);
 402 };
 403 #endif /* CONFIG_FB_TILEBLITTING */
 404
 405 /* FBINFO_* = fb_info.flags bit flags */
 406 #define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
 407 #define FBINFO_HWACCEL_DISABLED 0x0002
 408         /* When FBINFO_HWACCEL_DISABLED is set:
 409          *  Hardware acceleration is turned off.  Software implementations
 410          *  of required functions (copyarea(), fillrect(), and imageblit())
 411          *  takes over; acceleration engine should be in a quiescent state */
 412
 413 /* hints */
 414 #define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
 415 #define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
 416 #define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
 417
 418 /* hardware supported ops */
 419 /*  semantics: when a bit is set, it indicates that the operation is
 420  *   accelerated by hardware.
 421  *  required functions will still work even if the bit is not set.
 422  *  optional functions may not even exist if the flag bit is not set.
 423  */
 424 #define FBINFO_HWACCEL_NONE             0x0000
 425 #define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
 426 #define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
 427 #define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
 428 #define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
 429 #define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
 430 #define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
 431 #define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
 432
 433 #define FBINFO_MISC_USEREVENT          0x10000 /* event request
 434                                                   from userspace */
 435 #define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
 436
 437 /* A driver may set this flag to indicate that it does want a set_par to be
 438  * called every time when fbcon_switch is executed. The advantage is that with
 439  * this flag set you can really be sure that set_par is always called before
 440  * any of the functions dependent on the correct hardware state or altering
 441  * that state, even if you are using some broken X releases. The disadvantage
 442  * is that it introduces unwanted delays to every console switch if set_par
 443  * is slow. It is a good idea to try this flag in the drivers initialization
 444  * code whenever there is a bug report related to switching between X and the
 445  * framebuffer console.
 446  */
 447 #define FBINFO_MISC_ALWAYS_SETPAR   0x40000
 448
 449 /* where the fb is a firmware driver, and can be replaced with a proper one */
 450 #define FBINFO_MISC_FIRMWARE        0x80000
 451 /*
 452  * Host and GPU endianness differ.
 453  */
 454 #define FBINFO_FOREIGN_ENDIAN   0x100000
 455 /*
 456  * Big endian math. This is the same flags as above, but with different
 457  * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
 458  * and host endianness. Drivers should not use this flag.
 459  */
 460 #define FBINFO_BE_MATH  0x100000
 461
 462 /* report to the VT layer that this fb driver can accept forced console
 463    output like oopses */
 464 #define FBINFO_CAN_FORCE_OUTPUT     0x200000
 465
 466 struct fb_info {
 467         atomic_t count;
 468         int node;
 469         int flags;
 470         struct mutex lock;              /* Lock for open/release/ioctl funcs */
 471         struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
 472         struct fb_var_screeninfo var;   /* Current var */
 473         struct fb_fix_screeninfo fix;   /* Current fix */
 474         struct fb_monspecs monspecs;    /* Current Monitor specs */
 475         struct work_struct queue;       /* Framebuffer event queue */
 476         struct fb_pixmap pixmap;        /* Image hardware mapper */
 477         struct fb_pixmap sprite;        /* Cursor hardware mapper */
 478         struct fb_cmap cmap;            /* Current cmap */
 479         struct list_head modelist;      /* mode list */
 480         struct fb_videomode *mode;      /* current mode */
 481
 482 #ifdef CONFIG_FB_BACKLIGHT
 483         /* assigned backlight device */
 484         /* set before framebuffer registration,
 485            remove after unregister */
 486         struct backlight_device *bl_dev;
 487
 488         /* Backlight level curve */
 489         struct mutex bl_curve_mutex;
 490         u8 bl_curve[FB_BACKLIGHT_LEVELS];
 491 #endif
 492 #ifdef CONFIG_FB_DEFERRED_IO
 493         struct delayed_work deferred_work;
 494         struct fb_deferred_io *fbdefio;
 495 #endif
 496
 497         struct fb_ops *fbops;
 498         struct device *device;          /* This is the parent */
 499         struct device *dev;             /* This is this fb device */
 500         int class_flag;                    /* private sysfs flags */
 501 #ifdef CONFIG_FB_TILEBLITTING
 502         struct fb_tile_ops *tileops;    /* Tile Blitting */
 503 #endif
 504         union {
 505                 char __iomem *screen_base;      /* Virtual address */
 506                 char *screen_buffer;
 507         };
 508         unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */
 509         void *pseudo_palette;           /* Fake palette of 16 colors */
 510 #define FBINFO_STATE_RUNNING    0
 511 #define FBINFO_STATE_SUSPENDED  1
 512         u32 state;                      /* Hardware state i.e suspend */
 513         void *fbcon_par;                /* fbcon use-only private area */
 514         /* From here on everything is device dependent */
 515         void *par;
 516         /* we need the PCI or similar aperture base/size not
 517            smem_start/size as smem_start may just be an object
 518            allocated inside the aperture so may not actually overlap */
 519         struct apertures_struct {
 520                 unsigned int count;
 521                 struct aperture {
 522                         resource_size_t base;
 523                         resource_size_t size;
 524                 } ranges[0];
 525         } *apertures;
 526
 527         bool skip_vt_switch; /* no VT switch on suspend/resume required */
 528 };
 529
 530 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
 531         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
 532                         + max_num * sizeof(struct aperture), GFP_KERNEL);
 533         if (!a)
 534                 return NULL;
 535         a->count = max_num;
 536         return a;
 537 }
 538
 539 #ifdef MODULE
 540 #define FBINFO_DEFAULT  FBINFO_MODULE
 541 #else
 542 #define FBINFO_DEFAULT  0
 543 #endif
 544
 545 // This will go away
 546 #define FBINFO_FLAG_MODULE      FBINFO_MODULE
 547 #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
 548
 549 /* This will go away
 550  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 551  * when it wants to turn the acceleration engine on.  This is
 552  * really a separate operation, and should be modified via sysfs.
 553  *  But for now, we leave it broken with the following define
 554  */
 555 #define STUPID_ACCELF_TEXT_SHIT
 556
 557 // This will go away
 558 #if defined(__sparc__)
 559
 560 /* We map all of our framebuffers such that big-endian accesses
 561  * are what we want, so the following is sufficient.
 562  */
 563
 564 // This will go away
 565 #define fb_readb sbus_readb
 566 #define fb_readw sbus_readw
 567 #define fb_readl sbus_readl
 568 #define fb_readq sbus_readq
 569 #define fb_writeb sbus_writeb
 570 #define fb_writew sbus_writew
 571 #define fb_writel sbus_writel
 572 #define fb_writeq sbus_writeq
 573 #define fb_memset sbus_memset_io
 574 #define fb_memcpy_fromfb sbus_memcpy_fromio
 575 #define fb_memcpy_tofb sbus_memcpy_toio
 576
 577 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
 578
 579 #define fb_readb __raw_readb
 580 #define fb_readw __raw_readw
 581 #define fb_readl __raw_readl
 582 #define fb_readq __raw_readq
 583 #define fb_writeb __raw_writeb
 584 #define fb_writew __raw_writew
 585 #define fb_writel __raw_writel
 586 #define fb_writeq __raw_writeq
 587 #define fb_memset memset_io
 588 #define fb_memcpy_fromfb memcpy_fromio
 589 #define fb_memcpy_tofb memcpy_toio
 590
 591 #else
 592
 593 #define fb_readb(addr) (*(volatile u8 *) (addr))
 594 #define fb_readw(addr) (*(volatile u16 *) (addr))
 595 #define fb_readl(addr) (*(volatile u32 *) (addr))
 596 #define fb_readq(addr) (*(volatile u64 *) (addr))
 597 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
 598 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
 599 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
 600 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
 601 #define fb_memset memset
 602 #define fb_memcpy_fromfb memcpy
 603 #define fb_memcpy_tofb memcpy
 604
 605 #endif
 606
 607 #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
 608 #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
 609                                                       (val) << (bits))
 610 #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
 611                                                       (val) >> (bits))
 612
 613     /*
 614      *  `Generic' versions of the frame buffer device operations
 615      */
 616
 617 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
 618 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
 619 extern int fb_blank(struct fb_info *info, int blank);
 620 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 621 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 622 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
 623 /*
 624  * Drawing operations where framebuffer is in system RAM
 625  */
 626 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
 627 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
 628 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
 629 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
 630                            size_t count, loff_t *ppos);
 631 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
 632                             size_t count, loff_t *ppos);
 633
 634 /* drivers/video/fbmem.c */
 635 extern int register_framebuffer(struct fb_info *fb_info);
 636 extern int unregister_framebuffer(struct fb_info *fb_info);
 637 extern int unlink_framebuffer(struct fb_info *fb_info);
 638 extern int remove_conflicting_framebuffers(struct apertures_struct *a,
 639                                            const char *name, bool primary);
 640 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 641 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 642 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
 643 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
 644                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
 645 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 646 extern void fb_set_suspend(struct fb_info *info, int state);
 647 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
 648                               struct fb_fix_screeninfo *fix);
 649 extern int fb_get_options(const char *name, char **option);
 650 extern int fb_new_modelist(struct fb_info *info);
 651
 652 extern struct fb_info *registered_fb[FB_MAX];
 653 extern int num_registered_fb;
 654 extern struct class *fb_class;
 655
 656 extern int lock_fb_info(struct fb_info *info);
 657
 658 static inline void unlock_fb_info(struct fb_info *info)
 659 {
 660         mutex_unlock(&info->lock);
 661 }
 662
 663 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
 664                                            u8 *src, u32 s_pitch, u32 height)
 665 {
 666         u32 i, j;
 667
 668         d_pitch -= s_pitch;
 669
 670         for (i = height; i--; ) {
 671                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
 672                 for (j = 0; j < s_pitch; j++)
 673                         *dst++ = *src++;
 674                 dst += d_pitch;
 675         }
 676 }
 677
 678 /* drivers/video/fb_defio.c */
 679 extern void fb_deferred_io_init(struct fb_info *info);
 680 extern void fb_deferred_io_open(struct fb_info *info,
 681                                 struct inode *inode,
 682                                 struct file *file);
 683 extern void fb_deferred_io_cleanup(struct fb_info *info);
 684 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
 685                                 loff_t end, int datasync);
 686
 687 static inline bool fb_be_math(struct fb_info *info)
 688 {
 689 #ifdef CONFIG_FB_FOREIGN_ENDIAN
 690 #if defined(CONFIG_FB_BOTH_ENDIAN)
 691         return info->flags & FBINFO_BE_MATH;
 692 #elif defined(CONFIG_FB_BIG_ENDIAN)
 693         return true;
 694 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
 695         return false;
 696 #endif /* CONFIG_FB_BOTH_ENDIAN */
 697 #else
 698 #ifdef __BIG_ENDIAN
 699         return true;
 700 #else
 701         return false;
 702 #endif /* __BIG_ENDIAN */
 703 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
 704 }
 705
 706 /* drivers/video/fbsysfs.c */
 707 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
 708 extern void framebuffer_release(struct fb_info *info);
 709 extern int fb_init_device(struct fb_info *fb_info);
 710 extern void fb_cleanup_device(struct fb_info *head);
 711 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
 712
 713 /* drivers/video/fbmon.c */
 714 #define FB_MAXTIMINGS           0
 715 #define FB_VSYNCTIMINGS         1
 716 #define FB_HSYNCTIMINGS         2
 717 #define FB_DCLKTIMINGS          3
 718 #define FB_IGNOREMON            0x100
 719
 720 #define FB_MODE_IS_UNKNOWN      0
 721 #define FB_MODE_IS_DETAILED     1
 722 #define FB_MODE_IS_STANDARD     2
 723 #define FB_MODE_IS_VESA         4
 724 #define FB_MODE_IS_CALCULATED   8
 725 #define FB_MODE_IS_FIRST        16
 726 #define FB_MODE_IS_FROM_VAR     32
 727
 728 extern int fbmon_dpms(const struct fb_info *fb_info);
 729 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
 730                        struct fb_info *info);
 731 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
 732                             struct fb_info *info);
 733 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
 734 extern const unsigned char *fb_firmware_edid(struct device *device);
 735 extern void fb_edid_to_monspecs(unsigned char *edid,
 736                                 struct fb_monspecs *specs);
 737 extern void fb_edid_add_monspecs(unsigned char *edid,
 738                                  struct fb_monspecs *specs);
 739 extern void fb_destroy_modedb(struct fb_videomode *modedb);
 740 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
 741 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
 742
 743 extern int of_get_fb_videomode(struct device_node *np,
 744                                struct fb_videomode *fb,
 745                                int index);
 746 extern int fb_videomode_from_videomode(const struct videomode *vm,
 747                                        struct fb_videomode *fbmode);
 748
 749 /* drivers/video/modedb.c */
 750 #define VESA_MODEDB_SIZE 43
 751 #define DMT_SIZE 0x50
 752
 753 extern void fb_var_to_videomode(struct fb_videomode *mode,
 754                                 const struct fb_var_screeninfo *var);
 755 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
 756                                 const struct fb_videomode *mode);
 757 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
 758                             const struct fb_videomode *mode2);
 759 extern int fb_add_videomode(const struct fb_videomode *mode,
 760                             struct list_head *head);
 761 extern void fb_delete_videomode(const struct fb_videomode *mode,
 762                                 struct list_head *head);
 763 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
 764                                                 struct list_head *head);
 765 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
 766                                                     struct list_head *head);
 767 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
 768                                                        struct list_head *head);
 769 extern void fb_destroy_modelist(struct list_head *head);
 770 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
 771                                      struct list_head *head);
 772 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
 773                                                        struct list_head *head);
 774
 775 /* drivers/video/fbcmap.c */
 776 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
 777 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
 778 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
 779 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
 780 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
 781 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
 782 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
 783 extern const struct fb_cmap *fb_default_cmap(int len);
 784 extern void fb_invert_cmaps(void);
 785
 786 struct fb_videomode {
 787         const char *name;       /* optional */
 788         u32 refresh;            /* optional */
 789         u32 xres;
 790         u32 yres;
 791         u32 pixclock;
 792         u32 left_margin;
 793         u32 right_margin;
 794         u32 upper_margin;
 795         u32 lower_margin;
 796         u32 hsync_len;
 797         u32 vsync_len;
 798         u32 sync;
 799         u32 vmode;
 800         u32 flag;
 801 };
 802
 803 struct dmt_videomode {
 804         u32 dmt_id;
 805         u32 std_2byte_code;
 806         u32 cvt_3byte_code;
 807         const struct fb_videomode *mode;
 808 };
 809
 810 extern const char *fb_mode_option;
 811 extern const struct fb_videomode vesa_modes[];
 812 extern const struct fb_videomode cea_modes[65];
 813 extern const struct dmt_videomode dmt_modes[];
 814
 815 struct fb_modelist {
 816         struct list_head list;
 817         struct fb_videomode mode;
 818 };
 819
 820 extern int fb_find_mode(struct fb_var_screeninfo *var,
 821                         struct fb_info *info, const char *mode_option,
 822                         const struct fb_videomode *db,
 823                         unsigned int dbsize,
 824                         const struct fb_videomode *default_mode,
 825                         unsigned int default_bpp);
 826
 827 /* Convenience logging macros */
 828 #define fb_err(fb_info, fmt, ...)                                       \
 829         pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 830 #define fb_notice(info, fmt, ...)                                       \
 831         pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 832 #define fb_warn(fb_info, fmt, ...)                                      \
 833         pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 834 #define fb_info(fb_info, fmt, ...)                                      \
 835         pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 836 #define fb_dbg(fb_info, fmt, ...)                                       \
 837         pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
 838
 839 #endif /* _LINUX_FB_H */