1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_FB_H 3 #define _LINUX_FB_H 4 5 #include <linux/kgdb.h> 6 #include <uapi/linux/fb.h> 7 8 #define FBIO_CURSOR _IOWR('F', 0x08, struct fb_cursor_user) 9 10 #include <linux/fs.h> 11 #include <linux/init.h> 12 #include <linux/workqueue.h> 13 #include <linux/notifier.h> 14 #include <linux/list.h> 15 #include <linux/backlight.h> 16 #include <linux/slab.h> 17 #include <asm/io.h> 18 19 struct vm_area_struct; 20 struct fb_info; 21 struct device; 22 struct file; 23 struct videomode; 24 struct device_node; 25 26 /* Definitions below are used in the parsed monitor specs */ 27 #define FB_DPMS_ACTIVE_OFF 1 28 #define FB_DPMS_SUSPEND 2 29 #define FB_DPMS_STANDBY 4 30 31 #define FB_DISP_DDI 1 32 #define FB_DISP_ANA_700_300 2 33 #define FB_DISP_ANA_714_286 4 34 #define FB_DISP_ANA_1000_400 8 35 #define FB_DISP_ANA_700_000 16 36 37 #define FB_DISP_MONO 32 38 #define FB_DISP_RGB 64 39 #define FB_DISP_MULTI 128 40 #define FB_DISP_UNKNOWN 256 41 42 #define FB_SIGNAL_NONE 0 43 #define FB_SIGNAL_BLANK_BLANK 1 44 #define FB_SIGNAL_SEPARATE 2 45 #define FB_SIGNAL_COMPOSITE 4 46 #define FB_SIGNAL_SYNC_ON_GREEN 8 47 #define FB_SIGNAL_SERRATION_ON 16 48 49 #define FB_MISC_PRIM_COLOR 1 50 #define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */ 51 #define FB_MISC_HDMI 4 52 struct fb_chroma { 53 __u32 redx; /* in fraction of 1024 */ 54 __u32 greenx; 55 __u32 bluex; 56 __u32 whitex; 57 __u32 redy; 58 __u32 greeny; 59 __u32 bluey; 60 __u32 whitey; 61 }; 62 63 struct fb_monspecs { 64 struct fb_chroma chroma; 65 struct fb_videomode *modedb; /* mode database */ 66 __u8 manufacturer[4]; /* Manufacturer */ 67 __u8 monitor[14]; /* Monitor String */ 68 __u8 serial_no[14]; /* Serial Number */ 69 __u8 ascii[14]; /* ? */ 70 __u32 modedb_len; /* mode database length */ 71 __u32 model; /* Monitor Model */ 72 __u32 serial; /* Serial Number - Integer */ 73 __u32 year; /* Year manufactured */ 74 __u32 week; /* Week Manufactured */ 75 __u32 hfmin; /* hfreq lower limit (Hz) */ 76 __u32 hfmax; /* hfreq upper limit (Hz) */ 77 __u32 dclkmin; /* pixelclock lower limit (Hz) */ 78 __u32 dclkmax; /* pixelclock upper limit (Hz) */ 79 __u16 input; /* display type - see FB_DISP_* */ 80 __u16 dpms; /* DPMS support - see FB_DPMS_ */ 81 __u16 signal; /* Signal Type - see FB_SIGNAL_* */ 82 __u16 vfmin; /* vfreq lower limit (Hz) */ 83 __u16 vfmax; /* vfreq upper limit (Hz) */ 84 __u16 gamma; /* Gamma - in fractions of 100 */ 85 __u16 gtf : 1; /* supports GTF */ 86 __u16 misc; /* Misc flags - see FB_MISC_* */ 87 __u8 version; /* EDID version... */ 88 __u8 revision; /* ...and revision */ 89 __u8 max_x; /* Maximum horizontal size (cm) */ 90 __u8 max_y; /* Maximum vertical size (cm) */ 91 }; 92 93 struct fb_cmap_user { 94 __u32 start; /* First entry */ 95 __u32 len; /* Number of entries */ 96 __u16 __user *red; /* Red values */ 97 __u16 __user *green; 98 __u16 __user *blue; 99 __u16 __user *transp; /* transparency, can be NULL */ 100 }; 101 102 struct fb_image_user { 103 __u32 dx; /* Where to place image */ 104 __u32 dy; 105 __u32 width; /* Size of image */ 106 __u32 height; 107 __u32 fg_color; /* Only used when a mono bitmap */ 108 __u32 bg_color; 109 __u8 depth; /* Depth of the image */ 110 const char __user *data; /* Pointer to image data */ 111 struct fb_cmap_user cmap; /* color map info */ 112 }; 113 114 struct fb_cursor_user { 115 __u16 set; /* what to set */ 116 __u16 enable; /* cursor on/off */ 117 __u16 rop; /* bitop operation */ 118 const char __user *mask; /* cursor mask bits */ 119 struct fbcurpos hot; /* cursor hot spot */ 120 struct fb_image_user image; /* Cursor image */ 121 }; 122 123 /* 124 * Register/unregister for framebuffer events 125 */ 126 127 /* The resolution of the passed in fb_info about to change */ 128 #define FB_EVENT_MODE_CHANGE 0x01 129 /* The display on this fb_info is beeing suspended, no access to the 130 * framebuffer is allowed any more after that call returns 131 */ 132 #define FB_EVENT_SUSPEND 0x02 133 /* The display on this fb_info was resumed, you can restore the display 134 * if you own it 135 */ 136 #define FB_EVENT_RESUME 0x03 137 /* An entry from the modelist was removed */ 138 #define FB_EVENT_MODE_DELETE 0x04 139 /* A driver registered itself */ 140 #define FB_EVENT_FB_REGISTERED 0x05 141 /* A driver unregistered itself */ 142 #define FB_EVENT_FB_UNREGISTERED 0x06 143 /* CONSOLE-SPECIFIC: get console to framebuffer mapping */ 144 #define FB_EVENT_GET_CONSOLE_MAP 0x07 145 /* CONSOLE-SPECIFIC: set console to framebuffer mapping */ 146 #define FB_EVENT_SET_CONSOLE_MAP 0x08 147 /* A hardware display blank change occurred */ 148 #define FB_EVENT_BLANK 0x09 149 /* Private modelist is to be replaced */ 150 #define FB_EVENT_NEW_MODELIST 0x0A 151 /* The resolution of the passed in fb_info about to change and 152 all vc's should be changed */ 153 #define FB_EVENT_MODE_CHANGE_ALL 0x0B 154 /* A software display blank change occurred */ 155 #define FB_EVENT_CONBLANK 0x0C 156 /* Get drawing requirements */ 157 #define FB_EVENT_GET_REQ 0x0D 158 /* Unbind from the console if possible */ 159 #define FB_EVENT_FB_UNBIND 0x0E 160 /* CONSOLE-SPECIFIC: remap all consoles to new fb - for vga_switcheroo */ 161 #define FB_EVENT_REMAP_ALL_CONSOLE 0x0F 162 /* A hardware display blank early change occured */ 163 #define FB_EARLY_EVENT_BLANK 0x10 164 /* A hardware display blank revert early change occured */ 165 #define FB_R_EARLY_EVENT_BLANK 0x11 166 167 struct fb_event { 168 struct fb_info *info; 169 void *data; 170 }; 171 172 struct fb_blit_caps { 173 u32 x; 174 u32 y; 175 u32 len; 176 u32 flags; 177 }; 178 179 #ifdef CONFIG_FB_NOTIFY 180 extern int fb_register_client(struct notifier_block *nb); 181 extern int fb_unregister_client(struct notifier_block *nb); 182 extern int fb_notifier_call_chain(unsigned long val, void *v); 183 #else 184 static inline int fb_register_client(struct notifier_block *nb) 185 { 186 return 0; 187 }; 188 189 static inline int fb_unregister_client(struct notifier_block *nb) 190 { 191 return 0; 192 }; 193 194 static inline int fb_notifier_call_chain(unsigned long val, void *v) 195 { 196 return 0; 197 }; 198 #endif 199 200 /* 201 * Pixmap structure definition 202 * 203 * The purpose of this structure is to translate data 204 * from the hardware independent format of fbdev to what 205 * format the hardware needs. 206 */ 207 208 #define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */ 209 #define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */ 210 #define FB_PIXMAP_IO 4 /* memory is iomapped */ 211 #define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */ 212 213 struct fb_pixmap { 214 u8 *addr; /* pointer to memory */ 215 u32 size; /* size of buffer in bytes */ 216 u32 offset; /* current offset to buffer */ 217 u32 buf_align; /* byte alignment of each bitmap */ 218 u32 scan_align; /* alignment per scanline */ 219 u32 access_align; /* alignment per read/write (bits) */ 220 u32 flags; /* see FB_PIXMAP_* */ 221 u32 blit_x; /* supported bit block dimensions (1-32)*/ 222 u32 blit_y; /* Format: blit_x = 1 << (width - 1) */ 223 /* blit_y = 1 << (height - 1) */ 224 /* if 0, will be set to 0xffffffff (all)*/ 225 /* access methods */ 226 void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size); 227 void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size); 228 }; 229 230 #ifdef CONFIG_FB_DEFERRED_IO 231 struct fb_deferred_io { 232 /* delay between mkwrite and deferred handler */ 233 unsigned long delay; 234 struct mutex lock; /* mutex that protects the page list */ 235 struct list_head pagelist; /* list of touched pages */ 236 /* callback */ 237 void (*first_io)(struct fb_info *info); 238 void (*deferred_io)(struct fb_info *info, struct list_head *pagelist); 239 }; 240 #endif 241 242 /* 243 * Frame buffer operations 244 * 245 * LOCKING NOTE: those functions must _ALL_ be called with the console 246 * semaphore held, this is the only suitable locking mechanism we have 247 * in 2.6. Some may be called at interrupt time at this point though. 248 * 249 * The exception to this is the debug related hooks. Putting the fb 250 * into a debug state (e.g. flipping to the kernel console) and restoring 251 * it must be done in a lock-free manner, so low level drivers should 252 * keep track of the initial console (if applicable) and may need to 253 * perform direct, unlocked hardware writes in these hooks. 254 */ 255 256 struct fb_ops { 257 /* open/release and usage marking */ 258 struct module *owner; 259 int (*fb_open)(struct fb_info *info, int user); 260 int (*fb_release)(struct fb_info *info, int user); 261 262 /* For framebuffers with strange non linear layouts or that do not 263 * work with normal memory mapped access 264 */ 265 ssize_t (*fb_read)(struct fb_info *info, char __user *buf, 266 size_t count, loff_t *ppos); 267 ssize_t (*fb_write)(struct fb_info *info, const char __user *buf, 268 size_t count, loff_t *ppos); 269 270 /* checks var and eventually tweaks it to something supported, 271 * DO NOT MODIFY PAR */ 272 int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info); 273 274 /* set the video mode according to info->var */ 275 int (*fb_set_par)(struct fb_info *info); 276 277 /* set color register */ 278 int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green, 279 unsigned blue, unsigned transp, struct fb_info *info); 280 281 /* set color registers in batch */ 282 int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info); 283 284 /* blank display */ 285 int (*fb_blank)(int blank, struct fb_info *info); 286 287 /* pan display */ 288 int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info); 289 290 /* Draws a rectangle */ 291 void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect); 292 /* Copy data from area to another */ 293 void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region); 294 /* Draws a image to the display */ 295 void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image); 296 297 /* Draws cursor */ 298 int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor); 299 300 /* wait for blit idle, optional */ 301 int (*fb_sync)(struct fb_info *info); 302 303 /* perform fb specific ioctl (optional) */ 304 int (*fb_ioctl)(struct fb_info *info, unsigned int cmd, 305 unsigned long arg); 306 307 /* Handle 32bit compat ioctl (optional) */ 308 int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd, 309 unsigned long arg); 310 311 /* perform fb specific mmap */ 312 int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma); 313 314 /* get capability given var */ 315 void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps, 316 struct fb_var_screeninfo *var); 317 318 /* teardown any resources to do with this framebuffer */ 319 void (*fb_destroy)(struct fb_info *info); 320 321 /* called at KDB enter and leave time to prepare the console */ 322 int (*fb_debug_enter)(struct fb_info *info); 323 int (*fb_debug_leave)(struct fb_info *info); 324 }; 325 326 #ifdef CONFIG_FB_TILEBLITTING 327 #define FB_TILE_CURSOR_NONE 0 328 #define FB_TILE_CURSOR_UNDERLINE 1 329 #define FB_TILE_CURSOR_LOWER_THIRD 2 330 #define FB_TILE_CURSOR_LOWER_HALF 3 331 #define FB_TILE_CURSOR_TWO_THIRDS 4 332 #define FB_TILE_CURSOR_BLOCK 5 333 334 struct fb_tilemap { 335 __u32 width; /* width of each tile in pixels */ 336 __u32 height; /* height of each tile in scanlines */ 337 __u32 depth; /* color depth of each tile */ 338 __u32 length; /* number of tiles in the map */ 339 const __u8 *data; /* actual tile map: a bitmap array, packed 340 to the nearest byte */ 341 }; 342 343 struct fb_tilerect { 344 __u32 sx; /* origin in the x-axis */ 345 __u32 sy; /* origin in the y-axis */ 346 __u32 width; /* number of tiles in the x-axis */ 347 __u32 height; /* number of tiles in the y-axis */ 348 __u32 index; /* what tile to use: index to tile map */ 349 __u32 fg; /* foreground color */ 350 __u32 bg; /* background color */ 351 __u32 rop; /* raster operation */ 352 }; 353 354 struct fb_tilearea { 355 __u32 sx; /* source origin in the x-axis */ 356 __u32 sy; /* source origin in the y-axis */ 357 __u32 dx; /* destination origin in the x-axis */ 358 __u32 dy; /* destination origin in the y-axis */ 359 __u32 width; /* number of tiles in the x-axis */ 360 __u32 height; /* number of tiles in the y-axis */ 361 }; 362 363 struct fb_tileblit { 364 __u32 sx; /* origin in the x-axis */ 365 __u32 sy; /* origin in the y-axis */ 366 __u32 width; /* number of tiles in the x-axis */ 367 __u32 height; /* number of tiles in the y-axis */ 368 __u32 fg; /* foreground color */ 369 __u32 bg; /* background color */ 370 __u32 length; /* number of tiles to draw */ 371 __u32 *indices; /* array of indices to tile map */ 372 }; 373 374 struct fb_tilecursor { 375 __u32 sx; /* cursor position in the x-axis */ 376 __u32 sy; /* cursor position in the y-axis */ 377 __u32 mode; /* 0 = erase, 1 = draw */ 378 __u32 shape; /* see FB_TILE_CURSOR_* */ 379 __u32 fg; /* foreground color */ 380 __u32 bg; /* background color */ 381 }; 382 383 struct fb_tile_ops { 384 /* set tile characteristics */ 385 void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map); 386 387 /* all dimensions from hereon are in terms of tiles */ 388 389 /* move a rectangular region of tiles from one area to another*/ 390 void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area); 391 /* fill a rectangular region with a tile */ 392 void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect); 393 /* copy an array of tiles */ 394 void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit); 395 /* cursor */ 396 void (*fb_tilecursor)(struct fb_info *info, 397 struct fb_tilecursor *cursor); 398 /* get maximum length of the tile map */ 399 int (*fb_get_tilemax)(struct fb_info *info); 400 }; 401 #endif /* CONFIG_FB_TILEBLITTING */ 402 403 /* FBINFO_* = fb_info.flags bit flags */ 404 #define FBINFO_DEFAULT 0 405 #define FBINFO_HWACCEL_DISABLED 0x0002 406 /* When FBINFO_HWACCEL_DISABLED is set: 407 * Hardware acceleration is turned off. Software implementations 408 * of required functions (copyarea(), fillrect(), and imageblit()) 409 * takes over; acceleration engine should be in a quiescent state */ 410 411 /* hints */ 412 #define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */ 413 #define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */ 414 #define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */ 415 416 /* hardware supported ops */ 417 /* semantics: when a bit is set, it indicates that the operation is 418 * accelerated by hardware. 419 * required functions will still work even if the bit is not set. 420 * optional functions may not even exist if the flag bit is not set. 421 */ 422 #define FBINFO_HWACCEL_NONE 0x0000 423 #define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */ 424 #define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */ 425 #define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */ 426 #define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */ 427 #define FBINFO_HWACCEL_XPAN 0x1000 /* optional */ 428 #define FBINFO_HWACCEL_YPAN 0x2000 /* optional */ 429 #define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */ 430 431 #define FBINFO_MISC_USEREVENT 0x10000 /* event request 432 from userspace */ 433 #define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */ 434 435 /* A driver may set this flag to indicate that it does want a set_par to be 436 * called every time when fbcon_switch is executed. The advantage is that with 437 * this flag set you can really be sure that set_par is always called before 438 * any of the functions dependent on the correct hardware state or altering 439 * that state, even if you are using some broken X releases. The disadvantage 440 * is that it introduces unwanted delays to every console switch if set_par 441 * is slow. It is a good idea to try this flag in the drivers initialization 442 * code whenever there is a bug report related to switching between X and the 443 * framebuffer console. 444 */ 445 #define FBINFO_MISC_ALWAYS_SETPAR 0x40000 446 447 /* where the fb is a firmware driver, and can be replaced with a proper one */ 448 #define FBINFO_MISC_FIRMWARE 0x80000 449 /* 450 * Host and GPU endianness differ. 451 */ 452 #define FBINFO_FOREIGN_ENDIAN 0x100000 453 /* 454 * Big endian math. This is the same flags as above, but with different 455 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag 456 * and host endianness. Drivers should not use this flag. 457 */ 458 #define FBINFO_BE_MATH 0x100000 459 460 /* report to the VT layer that this fb driver can accept forced console 461 output like oopses */ 462 #define FBINFO_CAN_FORCE_OUTPUT 0x200000 463 464 struct fb_info { 465 atomic_t count; 466 int node; 467 int flags; 468 /* 469 * -1 by default, set to a FB_ROTATE_* value by the driver, if it knows 470 * a lcd is not mounted upright and fbcon should rotate to compensate. 471 */ 472 int fbcon_rotate_hint; 473 struct mutex lock; /* Lock for open/release/ioctl funcs */ 474 struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */ 475 struct fb_var_screeninfo var; /* Current var */ 476 struct fb_fix_screeninfo fix; /* Current fix */ 477 struct fb_monspecs monspecs; /* Current Monitor specs */ 478 struct work_struct queue; /* Framebuffer event queue */ 479 struct fb_pixmap pixmap; /* Image hardware mapper */ 480 struct fb_pixmap sprite; /* Cursor hardware mapper */ 481 struct fb_cmap cmap; /* Current cmap */ 482 struct list_head modelist; /* mode list */ 483 struct fb_videomode *mode; /* current mode */ 484 485 #ifdef CONFIG_FB_BACKLIGHT 486 /* assigned backlight device */ 487 /* set before framebuffer registration, 488 remove after unregister */ 489 struct backlight_device *bl_dev; 490 491 /* Backlight level curve */ 492 struct mutex bl_curve_mutex; 493 u8 bl_curve[FB_BACKLIGHT_LEVELS]; 494 #endif 495 #ifdef CONFIG_FB_DEFERRED_IO 496 struct delayed_work deferred_work; 497 struct fb_deferred_io *fbdefio; 498 #endif 499 500 struct fb_ops *fbops; 501 struct device *device; /* This is the parent */ 502 struct device *dev; /* This is this fb device */ 503 int class_flag; /* private sysfs flags */ 504 #ifdef CONFIG_FB_TILEBLITTING 505 struct fb_tile_ops *tileops; /* Tile Blitting */ 506 #endif 507 union { 508 char __iomem *screen_base; /* Virtual address */ 509 char *screen_buffer; 510 }; 511 unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */ 512 void *pseudo_palette; /* Fake palette of 16 colors */ 513 #define FBINFO_STATE_RUNNING 0 514 #define FBINFO_STATE_SUSPENDED 1 515 u32 state; /* Hardware state i.e suspend */ 516 void *fbcon_par; /* fbcon use-only private area */ 517 /* From here on everything is device dependent */ 518 void *par; 519 /* we need the PCI or similar aperture base/size not 520 smem_start/size as smem_start may just be an object 521 allocated inside the aperture so may not actually overlap */ 522 struct apertures_struct { 523 unsigned int count; 524 struct aperture { 525 resource_size_t base; 526 resource_size_t size; 527 } ranges[0]; 528 } *apertures; 529 530 bool skip_vt_switch; /* no VT switch on suspend/resume required */ 531 }; 532 533 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) { 534 struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct) 535 + max_num * sizeof(struct aperture), GFP_KERNEL); 536 if (!a) 537 return NULL; 538 a->count = max_num; 539 return a; 540 } 541 542 #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT 543 544 /* This will go away 545 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags 546 * when it wants to turn the acceleration engine on. This is 547 * really a separate operation, and should be modified via sysfs. 548 * But for now, we leave it broken with the following define 549 */ 550 #define STUPID_ACCELF_TEXT_SHIT 551 552 // This will go away 553 #if defined(__sparc__) 554 555 /* We map all of our framebuffers such that big-endian accesses 556 * are what we want, so the following is sufficient. 557 */ 558 559 // This will go away 560 #define fb_readb sbus_readb 561 #define fb_readw sbus_readw 562 #define fb_readl sbus_readl 563 #define fb_readq sbus_readq 564 #define fb_writeb sbus_writeb 565 #define fb_writew sbus_writew 566 #define fb_writel sbus_writel 567 #define fb_writeq sbus_writeq 568 #define fb_memset sbus_memset_io 569 #define fb_memcpy_fromfb sbus_memcpy_fromio 570 #define fb_memcpy_tofb sbus_memcpy_toio 571 572 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || \ 573 defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || \ 574 defined(__avr32__) || defined(__bfin__) || defined(__arm__) || \ 575 defined(__aarch64__) 576 577 #define fb_readb __raw_readb 578 #define fb_readw __raw_readw 579 #define fb_readl __raw_readl 580 #define fb_readq __raw_readq 581 #define fb_writeb __raw_writeb 582 #define fb_writew __raw_writew 583 #define fb_writel __raw_writel 584 #define fb_writeq __raw_writeq 585 #define fb_memset memset_io 586 #define fb_memcpy_fromfb memcpy_fromio 587 #define fb_memcpy_tofb memcpy_toio 588 589 #else 590 591 #define fb_readb(addr) (*(volatile u8 *) (addr)) 592 #define fb_readw(addr) (*(volatile u16 *) (addr)) 593 #define fb_readl(addr) (*(volatile u32 *) (addr)) 594 #define fb_readq(addr) (*(volatile u64 *) (addr)) 595 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b)) 596 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b)) 597 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b)) 598 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b)) 599 #define fb_memset memset 600 #define fb_memcpy_fromfb memcpy 601 #define fb_memcpy_tofb memcpy 602 603 #endif 604 605 #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0) 606 #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \ 607 (val) << (bits)) 608 #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \ 609 (val) >> (bits)) 610 611 /* 612 * `Generic' versions of the frame buffer device operations 613 */ 614 615 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 616 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 617 extern int fb_blank(struct fb_info *info, int blank); 618 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 619 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 620 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image); 621 /* 622 * Drawing operations where framebuffer is in system RAM 623 */ 624 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 625 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area); 626 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image); 627 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf, 628 size_t count, loff_t *ppos); 629 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, 630 size_t count, loff_t *ppos); 631 632 /* drivers/video/fbmem.c */ 633 extern int register_framebuffer(struct fb_info *fb_info); 634 extern int unregister_framebuffer(struct fb_info *fb_info); 635 extern int unlink_framebuffer(struct fb_info *fb_info); 636 extern int remove_conflicting_framebuffers(struct apertures_struct *a, 637 const char *name, bool primary); 638 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); 639 extern int fb_show_logo(struct fb_info *fb_info, int rotate); 640 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size); 641 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, 642 u32 height, u32 shift_high, u32 shift_low, u32 mod); 643 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height); 644 extern void fb_set_suspend(struct fb_info *info, int state); 645 extern int fb_get_color_depth(struct fb_var_screeninfo *var, 646 struct fb_fix_screeninfo *fix); 647 extern int fb_get_options(const char *name, char **option); 648 extern int fb_new_modelist(struct fb_info *info); 649 650 extern struct fb_info *registered_fb[FB_MAX]; 651 extern int num_registered_fb; 652 extern struct class *fb_class; 653 654 extern int lock_fb_info(struct fb_info *info); 655 656 static inline void unlock_fb_info(struct fb_info *info) 657 { 658 mutex_unlock(&info->lock); 659 } 660 661 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, 662 u8 *src, u32 s_pitch, u32 height) 663 { 664 u32 i, j; 665 666 d_pitch -= s_pitch; 667 668 for (i = height; i--; ) { 669 /* s_pitch is a few bytes at the most, memcpy is suboptimal */ 670 for (j = 0; j < s_pitch; j++) 671 *dst++ = *src++; 672 dst += d_pitch; 673 } 674 } 675 676 /* drivers/video/fb_defio.c */ 677 int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma); 678 extern void fb_deferred_io_init(struct fb_info *info); 679 extern void fb_deferred_io_open(struct fb_info *info, 680 struct inode *inode, 681 struct file *file); 682 extern void fb_deferred_io_cleanup(struct fb_info *info); 683 extern int fb_deferred_io_fsync(struct file *file, loff_t start, 684 loff_t end, int datasync); 685 686 static inline bool fb_be_math(struct fb_info *info) 687 { 688 #ifdef CONFIG_FB_FOREIGN_ENDIAN 689 #if defined(CONFIG_FB_BOTH_ENDIAN) 690 return info->flags & FBINFO_BE_MATH; 691 #elif defined(CONFIG_FB_BIG_ENDIAN) 692 return true; 693 #elif defined(CONFIG_FB_LITTLE_ENDIAN) 694 return false; 695 #endif /* CONFIG_FB_BOTH_ENDIAN */ 696 #else 697 #ifdef __BIG_ENDIAN 698 return true; 699 #else 700 return false; 701 #endif /* __BIG_ENDIAN */ 702 #endif /* CONFIG_FB_FOREIGN_ENDIAN */ 703 } 704 705 /* drivers/video/fbsysfs.c */ 706 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev); 707 extern void framebuffer_release(struct fb_info *info); 708 extern int fb_init_device(struct fb_info *fb_info); 709 extern void fb_cleanup_device(struct fb_info *head); 710 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max); 711 712 /* drivers/video/fbmon.c */ 713 #define FB_MAXTIMINGS 0 714 #define FB_VSYNCTIMINGS 1 715 #define FB_HSYNCTIMINGS 2 716 #define FB_DCLKTIMINGS 3 717 #define FB_IGNOREMON 0x100 718 719 #define FB_MODE_IS_UNKNOWN 0 720 #define FB_MODE_IS_DETAILED 1 721 #define FB_MODE_IS_STANDARD 2 722 #define FB_MODE_IS_VESA 4 723 #define FB_MODE_IS_CALCULATED 8 724 #define FB_MODE_IS_FIRST 16 725 #define FB_MODE_IS_FROM_VAR 32 726 727 extern int fbmon_dpms(const struct fb_info *fb_info); 728 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, 729 struct fb_info *info); 730 extern int fb_validate_mode(const struct fb_var_screeninfo *var, 731 struct fb_info *info); 732 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var); 733 extern const unsigned char *fb_firmware_edid(struct device *device); 734 extern void fb_edid_to_monspecs(unsigned char *edid, 735 struct fb_monspecs *specs); 736 extern void fb_edid_add_monspecs(unsigned char *edid, 737 struct fb_monspecs *specs); 738 extern void fb_destroy_modedb(struct fb_videomode *modedb); 739 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); 740 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); 741 742 extern int of_get_fb_videomode(struct device_node *np, 743 struct fb_videomode *fb, 744 int index); 745 extern int fb_videomode_from_videomode(const struct videomode *vm, 746 struct fb_videomode *fbmode); 747 748 /* drivers/video/modedb.c */ 749 #define VESA_MODEDB_SIZE 43 750 #define DMT_SIZE 0x50 751 752 extern void fb_var_to_videomode(struct fb_videomode *mode, 753 const struct fb_var_screeninfo *var); 754 extern void fb_videomode_to_var(struct fb_var_screeninfo *var, 755 const struct fb_videomode *mode); 756 extern int fb_mode_is_equal(const struct fb_videomode *mode1, 757 const struct fb_videomode *mode2); 758 extern int fb_add_videomode(const struct fb_videomode *mode, 759 struct list_head *head); 760 extern void fb_delete_videomode(const struct fb_videomode *mode, 761 struct list_head *head); 762 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, 763 struct list_head *head); 764 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 765 struct list_head *head); 766 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 767 struct list_head *head); 768 extern void fb_destroy_modelist(struct list_head *head); 769 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 770 struct list_head *head); 771 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 772 struct list_head *head); 773 774 /* drivers/video/fbcmap.c */ 775 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp); 776 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags); 777 extern void fb_dealloc_cmap(struct fb_cmap *cmap); 778 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to); 779 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to); 780 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info); 781 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info); 782 extern const struct fb_cmap *fb_default_cmap(int len); 783 extern void fb_invert_cmaps(void); 784 785 struct fb_videomode { 786 const char *name; /* optional */ 787 u32 refresh; /* optional */ 788 u32 xres; 789 u32 yres; 790 u32 pixclock; 791 u32 left_margin; 792 u32 right_margin; 793 u32 upper_margin; 794 u32 lower_margin; 795 u32 hsync_len; 796 u32 vsync_len; 797 u32 sync; 798 u32 vmode; 799 u32 flag; 800 }; 801 802 struct dmt_videomode { 803 u32 dmt_id; 804 u32 std_2byte_code; 805 u32 cvt_3byte_code; 806 const struct fb_videomode *mode; 807 }; 808 809 extern const char *fb_mode_option; 810 extern const struct fb_videomode vesa_modes[]; 811 extern const struct fb_videomode cea_modes[65]; 812 extern const struct dmt_videomode dmt_modes[]; 813 814 struct fb_modelist { 815 struct list_head list; 816 struct fb_videomode mode; 817 }; 818 819 extern int fb_find_mode(struct fb_var_screeninfo *var, 820 struct fb_info *info, const char *mode_option, 821 const struct fb_videomode *db, 822 unsigned int dbsize, 823 const struct fb_videomode *default_mode, 824 unsigned int default_bpp); 825 826 /* Convenience logging macros */ 827 #define fb_err(fb_info, fmt, ...) \ 828 pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 829 #define fb_notice(info, fmt, ...) \ 830 pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 831 #define fb_warn(fb_info, fmt, ...) \ 832 pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 833 #define fb_info(fb_info, fmt, ...) \ 834 pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 835 #define fb_dbg(fb_info, fmt, ...) \ 836 pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 837 838 #endif /* _LINUX_FB_H */ 839