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