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 */ 840