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 18struct vm_area_struct; 19struct fb_info; 20struct device; 21struct file; 22struct videomode; 23struct 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 51struct 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 62struct 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 92struct 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 101struct 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 113struct 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 166struct fb_event { 167 struct fb_info *info; 168 void *data; 169}; 170 171struct fb_blit_caps { 172 u32 x; 173 u32 y; 174 u32 len; 175 u32 flags; 176}; 177 178extern int fb_register_client(struct notifier_block *nb); 179extern int fb_unregister_client(struct notifier_block *nb); 180extern int fb_notifier_call_chain(unsigned long val, void *v); 181/* 182 * Pixmap structure definition 183 * 184 * The purpose of this structure is to translate data 185 * from the hardware independent format of fbdev to what 186 * format the hardware needs. 187 */ 188 189#define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */ 190#define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */ 191#define FB_PIXMAP_IO 4 /* memory is iomapped */ 192#define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */ 193 194struct fb_pixmap { 195 u8 *addr; /* pointer to memory */ 196 u32 size; /* size of buffer in bytes */ 197 u32 offset; /* current offset to buffer */ 198 u32 buf_align; /* byte alignment of each bitmap */ 199 u32 scan_align; /* alignment per scanline */ 200 u32 access_align; /* alignment per read/write (bits) */ 201 u32 flags; /* see FB_PIXMAP_* */ 202 u32 blit_x; /* supported bit block dimensions (1-32)*/ 203 u32 blit_y; /* Format: blit_x = 1 << (width - 1) */ 204 /* blit_y = 1 << (height - 1) */ 205 /* if 0, will be set to 0xffffffff (all)*/ 206 /* access methods */ 207 void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size); 208 void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size); 209}; 210 211#ifdef CONFIG_FB_DEFERRED_IO 212struct fb_deferred_io { 213 /* delay between mkwrite and deferred handler */ 214 unsigned long delay; 215 struct mutex lock; /* mutex that protects the page list */ 216 struct list_head pagelist; /* list of touched pages */ 217 /* callback */ 218 void (*first_io)(struct fb_info *info); 219 void (*deferred_io)(struct fb_info *info, struct list_head *pagelist); 220}; 221#endif 222 223/* 224 * Frame buffer operations 225 * 226 * LOCKING NOTE: those functions must _ALL_ be called with the console 227 * semaphore held, this is the only suitable locking mechanism we have 228 * in 2.6. Some may be called at interrupt time at this point though. 229 * 230 * The exception to this is the debug related hooks. Putting the fb 231 * into a debug state (e.g. flipping to the kernel console) and restoring 232 * it must be done in a lock-free manner, so low level drivers should 233 * keep track of the initial console (if applicable) and may need to 234 * perform direct, unlocked hardware writes in these hooks. 235 */ 236 237struct fb_ops { 238 /* open/release and usage marking */ 239 struct module *owner; 240 int (*fb_open)(struct fb_info *info, int user); 241 int (*fb_release)(struct fb_info *info, int user); 242 243 /* For framebuffers with strange non linear layouts or that do not 244 * work with normal memory mapped access 245 */ 246 ssize_t (*fb_read)(struct fb_info *info, char __user *buf, 247 size_t count, loff_t *ppos); 248 ssize_t (*fb_write)(struct fb_info *info, const char __user *buf, 249 size_t count, loff_t *ppos); 250 251 /* checks var and eventually tweaks it to something supported, 252 * DO NOT MODIFY PAR */ 253 int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info); 254 255 /* set the video mode according to info->var */ 256 int (*fb_set_par)(struct fb_info *info); 257 258 /* set color register */ 259 int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green, 260 unsigned blue, unsigned transp, struct fb_info *info); 261 262 /* set color registers in batch */ 263 int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info); 264 265 /* blank display */ 266 int (*fb_blank)(int blank, struct fb_info *info); 267 268 /* pan display */ 269 int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info); 270 271 /* Draws a rectangle */ 272 void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect); 273 /* Copy data from area to another */ 274 void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region); 275 /* Draws a image to the display */ 276 void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image); 277 278 /* Draws cursor */ 279 int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor); 280 281 /* Rotates the display */ 282 void (*fb_rotate)(struct fb_info *info, int angle); 283 284 /* wait for blit idle, optional */ 285 int (*fb_sync)(struct fb_info *info); 286 287 /* perform fb specific ioctl (optional) */ 288 int (*fb_ioctl)(struct fb_info *info, unsigned int cmd, 289 unsigned long arg); 290 291 /* Handle 32bit compat ioctl (optional) */ 292 int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd, 293 unsigned long arg); 294 295 /* perform fb specific mmap */ 296 int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma); 297 298 /* get capability given var */ 299 void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps, 300 struct fb_var_screeninfo *var); 301 302 /* teardown any resources to do with this framebuffer */ 303 void (*fb_destroy)(struct fb_info *info); 304 305 /* called at KDB enter and leave time to prepare the console */ 306 int (*fb_debug_enter)(struct fb_info *info); 307 int (*fb_debug_leave)(struct fb_info *info); 308}; 309 310#ifdef CONFIG_FB_TILEBLITTING 311#define FB_TILE_CURSOR_NONE 0 312#define FB_TILE_CURSOR_UNDERLINE 1 313#define FB_TILE_CURSOR_LOWER_THIRD 2 314#define FB_TILE_CURSOR_LOWER_HALF 3 315#define FB_TILE_CURSOR_TWO_THIRDS 4 316#define FB_TILE_CURSOR_BLOCK 5 317 318struct fb_tilemap { 319 __u32 width; /* width of each tile in pixels */ 320 __u32 height; /* height of each tile in scanlines */ 321 __u32 depth; /* color depth of each tile */ 322 __u32 length; /* number of tiles in the map */ 323 const __u8 *data; /* actual tile map: a bitmap array, packed 324 to the nearest byte */ 325}; 326 327struct fb_tilerect { 328 __u32 sx; /* origin in the x-axis */ 329 __u32 sy; /* origin in the y-axis */ 330 __u32 width; /* number of tiles in the x-axis */ 331 __u32 height; /* number of tiles in the y-axis */ 332 __u32 index; /* what tile to use: index to tile map */ 333 __u32 fg; /* foreground color */ 334 __u32 bg; /* background color */ 335 __u32 rop; /* raster operation */ 336}; 337 338struct fb_tilearea { 339 __u32 sx; /* source origin in the x-axis */ 340 __u32 sy; /* source origin in the y-axis */ 341 __u32 dx; /* destination origin in the x-axis */ 342 __u32 dy; /* destination origin in the y-axis */ 343 __u32 width; /* number of tiles in the x-axis */ 344 __u32 height; /* number of tiles in the y-axis */ 345}; 346 347struct fb_tileblit { 348 __u32 sx; /* origin in the x-axis */ 349 __u32 sy; /* origin in the y-axis */ 350 __u32 width; /* number of tiles in the x-axis */ 351 __u32 height; /* number of tiles in the y-axis */ 352 __u32 fg; /* foreground color */ 353 __u32 bg; /* background color */ 354 __u32 length; /* number of tiles to draw */ 355 __u32 *indices; /* array of indices to tile map */ 356}; 357 358struct fb_tilecursor { 359 __u32 sx; /* cursor position in the x-axis */ 360 __u32 sy; /* cursor position in the y-axis */ 361 __u32 mode; /* 0 = erase, 1 = draw */ 362 __u32 shape; /* see FB_TILE_CURSOR_* */ 363 __u32 fg; /* foreground color */ 364 __u32 bg; /* background color */ 365}; 366 367struct fb_tile_ops { 368 /* set tile characteristics */ 369 void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map); 370 371 /* all dimensions from hereon are in terms of tiles */ 372 373 /* move a rectangular region of tiles from one area to another*/ 374 void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area); 375 /* fill a rectangular region with a tile */ 376 void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect); 377 /* copy an array of tiles */ 378 void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit); 379 /* cursor */ 380 void (*fb_tilecursor)(struct fb_info *info, 381 struct fb_tilecursor *cursor); 382 /* get maximum length of the tile map */ 383 int (*fb_get_tilemax)(struct fb_info *info); 384}; 385#endif /* CONFIG_FB_TILEBLITTING */ 386 387/* FBINFO_* = fb_info.flags bit flags */ 388#define FBINFO_MODULE 0x0001 /* Low-level driver is a module */ 389#define FBINFO_HWACCEL_DISABLED 0x0002 390 /* When FBINFO_HWACCEL_DISABLED is set: 391 * Hardware acceleration is turned off. Software implementations 392 * of required functions (copyarea(), fillrect(), and imageblit()) 393 * takes over; acceleration engine should be in a quiescent state */ 394 395/* hints */ 396#define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */ 397#define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */ 398#define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */ 399 400/* hardware supported ops */ 401/* semantics: when a bit is set, it indicates that the operation is 402 * accelerated by hardware. 403 * required functions will still work even if the bit is not set. 404 * optional functions may not even exist if the flag bit is not set. 405 */ 406#define FBINFO_HWACCEL_NONE 0x0000 407#define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */ 408#define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */ 409#define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */ 410#define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */ 411#define FBINFO_HWACCEL_XPAN 0x1000 /* optional */ 412#define FBINFO_HWACCEL_YPAN 0x2000 /* optional */ 413#define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */ 414 415#define FBINFO_MISC_USEREVENT 0x10000 /* event request 416 from userspace */ 417#define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */ 418 419/* A driver may set this flag to indicate that it does want a set_par to be 420 * called every time when fbcon_switch is executed. The advantage is that with 421 * this flag set you can really be sure that set_par is always called before 422 * any of the functions dependent on the correct hardware state or altering 423 * that state, even if you are using some broken X releases. The disadvantage 424 * is that it introduces unwanted delays to every console switch if set_par 425 * is slow. It is a good idea to try this flag in the drivers initialization 426 * code whenever there is a bug report related to switching between X and the 427 * framebuffer console. 428 */ 429#define FBINFO_MISC_ALWAYS_SETPAR 0x40000 430 431/* where the fb is a firmware driver, and can be replaced with a proper one */ 432#define FBINFO_MISC_FIRMWARE 0x80000 433/* 434 * Host and GPU endianness differ. 435 */ 436#define FBINFO_FOREIGN_ENDIAN 0x100000 437/* 438 * Big endian math. This is the same flags as above, but with different 439 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag 440 * and host endianness. Drivers should not use this flag. 441 */ 442#define FBINFO_BE_MATH 0x100000 443 444/* report to the VT layer that this fb driver can accept forced console 445 output like oopses */ 446#define FBINFO_CAN_FORCE_OUTPUT 0x200000 447 448struct fb_info { 449 atomic_t count; 450 int node; 451 int flags; 452 struct mutex lock; /* Lock for open/release/ioctl funcs */ 453 struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */ 454 struct fb_var_screeninfo var; /* Current var */ 455 struct fb_fix_screeninfo fix; /* Current fix */ 456 struct fb_monspecs monspecs; /* Current Monitor specs */ 457 struct work_struct queue; /* Framebuffer event queue */ 458 struct fb_pixmap pixmap; /* Image hardware mapper */ 459 struct fb_pixmap sprite; /* Cursor hardware mapper */ 460 struct fb_cmap cmap; /* Current cmap */ 461 struct list_head modelist; /* mode list */ 462 struct fb_videomode *mode; /* current mode */ 463 464#ifdef CONFIG_FB_BACKLIGHT 465 /* assigned backlight device */ 466 /* set before framebuffer registration, 467 remove after unregister */ 468 struct backlight_device *bl_dev; 469 470 /* Backlight level curve */ 471 struct mutex bl_curve_mutex; 472 u8 bl_curve[FB_BACKLIGHT_LEVELS]; 473#endif 474#ifdef CONFIG_FB_DEFERRED_IO 475 struct delayed_work deferred_work; 476 struct fb_deferred_io *fbdefio; 477#endif 478 479 struct fb_ops *fbops; 480 struct device *device; /* This is the parent */ 481 struct device *dev; /* This is this fb device */ 482 int class_flag; /* private sysfs flags */ 483#ifdef CONFIG_FB_TILEBLITTING 484 struct fb_tile_ops *tileops; /* Tile Blitting */ 485#endif 486 char __iomem *screen_base; /* Virtual address */ 487 unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */ 488 void *pseudo_palette; /* Fake palette of 16 colors */ 489#define FBINFO_STATE_RUNNING 0 490#define FBINFO_STATE_SUSPENDED 1 491 u32 state; /* Hardware state i.e suspend */ 492 void *fbcon_par; /* fbcon use-only private area */ 493 /* From here on everything is device dependent */ 494 void *par; 495 /* we need the PCI or similar aperture base/size not 496 smem_start/size as smem_start may just be an object 497 allocated inside the aperture so may not actually overlap */ 498 struct apertures_struct { 499 unsigned int count; 500 struct aperture { 501 resource_size_t base; 502 resource_size_t size; 503 } ranges[0]; 504 } *apertures; 505 506 bool skip_vt_switch; /* no VT switch on suspend/resume required */ 507}; 508 509static inline struct apertures_struct *alloc_apertures(unsigned int max_num) { 510 struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct) 511 + max_num * sizeof(struct aperture), GFP_KERNEL); 512 if (!a) 513 return NULL; 514 a->count = max_num; 515 return a; 516} 517 518#ifdef MODULE 519#define FBINFO_DEFAULT FBINFO_MODULE 520#else 521#define FBINFO_DEFAULT 0 522#endif 523 524// This will go away 525#define FBINFO_FLAG_MODULE FBINFO_MODULE 526#define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT 527 528/* This will go away 529 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags 530 * when it wants to turn the acceleration engine on. This is 531 * really a separate operation, and should be modified via sysfs. 532 * But for now, we leave it broken with the following define 533 */ 534#define STUPID_ACCELF_TEXT_SHIT 535 536// This will go away 537#if defined(__sparc__) 538 539/* We map all of our framebuffers such that big-endian accesses 540 * are what we want, so the following is sufficient. 541 */ 542 543// This will go away 544#define fb_readb sbus_readb 545#define fb_readw sbus_readw 546#define fb_readl sbus_readl 547#define fb_readq sbus_readq 548#define fb_writeb sbus_writeb 549#define fb_writew sbus_writew 550#define fb_writel sbus_writel 551#define fb_writeq sbus_writeq 552#define fb_memset sbus_memset_io 553#define fb_memcpy_fromfb sbus_memcpy_fromio 554#define fb_memcpy_tofb sbus_memcpy_toio 555 556#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__) 557 558#define fb_readb __raw_readb 559#define fb_readw __raw_readw 560#define fb_readl __raw_readl 561#define fb_readq __raw_readq 562#define fb_writeb __raw_writeb 563#define fb_writew __raw_writew 564#define fb_writel __raw_writel 565#define fb_writeq __raw_writeq 566#define fb_memset memset_io 567#define fb_memcpy_fromfb memcpy_fromio 568#define fb_memcpy_tofb memcpy_toio 569 570#else 571 572#define fb_readb(addr) (*(volatile u8 *) (addr)) 573#define fb_readw(addr) (*(volatile u16 *) (addr)) 574#define fb_readl(addr) (*(volatile u32 *) (addr)) 575#define fb_readq(addr) (*(volatile u64 *) (addr)) 576#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b)) 577#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b)) 578#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b)) 579#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b)) 580#define fb_memset memset 581#define fb_memcpy_fromfb memcpy 582#define fb_memcpy_tofb memcpy 583 584#endif 585 586#define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0) 587#define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \ 588 (val) << (bits)) 589#define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \ 590 (val) >> (bits)) 591 592 /* 593 * `Generic' versions of the frame buffer device operations 594 */ 595 596extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 597extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 598extern int fb_blank(struct fb_info *info, int blank); 599extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 600extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 601extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image); 602/* 603 * Drawing operations where framebuffer is in system RAM 604 */ 605extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 606extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area); 607extern void sys_imageblit(struct fb_info *info, const struct fb_image *image); 608extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf, 609 size_t count, loff_t *ppos); 610extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, 611 size_t count, loff_t *ppos); 612 613/* drivers/video/fbmem.c */ 614extern int register_framebuffer(struct fb_info *fb_info); 615extern int unregister_framebuffer(struct fb_info *fb_info); 616extern int unlink_framebuffer(struct fb_info *fb_info); 617extern int remove_conflicting_framebuffers(struct apertures_struct *a, 618 const char *name, bool primary); 619extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); 620extern int fb_show_logo(struct fb_info *fb_info, int rotate); 621extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size); 622extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, 623 u32 height, u32 shift_high, u32 shift_low, u32 mod); 624extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height); 625extern void fb_set_suspend(struct fb_info *info, int state); 626extern int fb_get_color_depth(struct fb_var_screeninfo *var, 627 struct fb_fix_screeninfo *fix); 628extern int fb_get_options(const char *name, char **option); 629extern int fb_new_modelist(struct fb_info *info); 630 631extern struct fb_info *registered_fb[FB_MAX]; 632extern int num_registered_fb; 633extern struct class *fb_class; 634 635extern int lock_fb_info(struct fb_info *info); 636 637static inline void unlock_fb_info(struct fb_info *info) 638{ 639 mutex_unlock(&info->lock); 640} 641 642static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, 643 u8 *src, u32 s_pitch, u32 height) 644{ 645 u32 i, j; 646 647 d_pitch -= s_pitch; 648 649 for (i = height; i--; ) { 650 /* s_pitch is a few bytes at the most, memcpy is suboptimal */ 651 for (j = 0; j < s_pitch; j++) 652 *dst++ = *src++; 653 dst += d_pitch; 654 } 655} 656 657/* drivers/video/fb_defio.c */ 658extern void fb_deferred_io_init(struct fb_info *info); 659extern void fb_deferred_io_open(struct fb_info *info, 660 struct inode *inode, 661 struct file *file); 662extern void fb_deferred_io_cleanup(struct fb_info *info); 663extern int fb_deferred_io_fsync(struct file *file, loff_t start, 664 loff_t end, int datasync); 665 666static inline bool fb_be_math(struct fb_info *info) 667{ 668#ifdef CONFIG_FB_FOREIGN_ENDIAN 669#if defined(CONFIG_FB_BOTH_ENDIAN) 670 return info->flags & FBINFO_BE_MATH; 671#elif defined(CONFIG_FB_BIG_ENDIAN) 672 return true; 673#elif defined(CONFIG_FB_LITTLE_ENDIAN) 674 return false; 675#endif /* CONFIG_FB_BOTH_ENDIAN */ 676#else 677#ifdef __BIG_ENDIAN 678 return true; 679#else 680 return false; 681#endif /* __BIG_ENDIAN */ 682#endif /* CONFIG_FB_FOREIGN_ENDIAN */ 683} 684 685/* drivers/video/fbsysfs.c */ 686extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev); 687extern void framebuffer_release(struct fb_info *info); 688extern int fb_init_device(struct fb_info *fb_info); 689extern void fb_cleanup_device(struct fb_info *head); 690extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max); 691 692/* drivers/video/fbmon.c */ 693#define FB_MAXTIMINGS 0 694#define FB_VSYNCTIMINGS 1 695#define FB_HSYNCTIMINGS 2 696#define FB_DCLKTIMINGS 3 697#define FB_IGNOREMON 0x100 698 699#define FB_MODE_IS_UNKNOWN 0 700#define FB_MODE_IS_DETAILED 1 701#define FB_MODE_IS_STANDARD 2 702#define FB_MODE_IS_VESA 4 703#define FB_MODE_IS_CALCULATED 8 704#define FB_MODE_IS_FIRST 16 705#define FB_MODE_IS_FROM_VAR 32 706 707extern int fbmon_dpms(const struct fb_info *fb_info); 708extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, 709 struct fb_info *info); 710extern int fb_validate_mode(const struct fb_var_screeninfo *var, 711 struct fb_info *info); 712extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var); 713extern const unsigned char *fb_firmware_edid(struct device *device); 714extern void fb_edid_to_monspecs(unsigned char *edid, 715 struct fb_monspecs *specs); 716extern void fb_edid_add_monspecs(unsigned char *edid, 717 struct fb_monspecs *specs); 718extern void fb_destroy_modedb(struct fb_videomode *modedb); 719extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); 720extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); 721 722extern int of_get_fb_videomode(struct device_node *np, 723 struct fb_videomode *fb, 724 int index); 725extern int fb_videomode_from_videomode(const struct videomode *vm, 726 struct fb_videomode *fbmode); 727 728/* drivers/video/modedb.c */ 729#define VESA_MODEDB_SIZE 43 730#define DMT_SIZE 0x50 731 732extern void fb_var_to_videomode(struct fb_videomode *mode, 733 const struct fb_var_screeninfo *var); 734extern void fb_videomode_to_var(struct fb_var_screeninfo *var, 735 const struct fb_videomode *mode); 736extern int fb_mode_is_equal(const struct fb_videomode *mode1, 737 const struct fb_videomode *mode2); 738extern int fb_add_videomode(const struct fb_videomode *mode, 739 struct list_head *head); 740extern void fb_delete_videomode(const struct fb_videomode *mode, 741 struct list_head *head); 742extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, 743 struct list_head *head); 744extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, 745 struct list_head *head); 746extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, 747 struct list_head *head); 748extern void fb_destroy_modelist(struct list_head *head); 749extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, 750 struct list_head *head); 751extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, 752 struct list_head *head); 753 754/* drivers/video/fbcmap.c */ 755extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp); 756extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags); 757extern void fb_dealloc_cmap(struct fb_cmap *cmap); 758extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to); 759extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to); 760extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info); 761extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info); 762extern const struct fb_cmap *fb_default_cmap(int len); 763extern void fb_invert_cmaps(void); 764 765struct fb_videomode { 766 const char *name; /* optional */ 767 u32 refresh; /* optional */ 768 u32 xres; 769 u32 yres; 770 u32 pixclock; 771 u32 left_margin; 772 u32 right_margin; 773 u32 upper_margin; 774 u32 lower_margin; 775 u32 hsync_len; 776 u32 vsync_len; 777 u32 sync; 778 u32 vmode; 779 u32 flag; 780}; 781 782struct dmt_videomode { 783 u32 dmt_id; 784 u32 std_2byte_code; 785 u32 cvt_3byte_code; 786 const struct fb_videomode *mode; 787}; 788 789extern const char *fb_mode_option; 790extern const struct fb_videomode vesa_modes[]; 791extern const struct fb_videomode cea_modes[64]; 792extern const struct dmt_videomode dmt_modes[]; 793 794struct fb_modelist { 795 struct list_head list; 796 struct fb_videomode mode; 797}; 798 799extern int fb_find_mode(struct fb_var_screeninfo *var, 800 struct fb_info *info, const char *mode_option, 801 const struct fb_videomode *db, 802 unsigned int dbsize, 803 const struct fb_videomode *default_mode, 804 unsigned int default_bpp); 805 806/* Convenience logging macros */ 807#define fb_err(fb_info, fmt, ...) \ 808 pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 809#define fb_notice(info, fmt, ...) \ 810 pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 811#define fb_warn(fb_info, fmt, ...) \ 812 pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 813#define fb_info(fb_info, fmt, ...) \ 814 pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 815#define fb_dbg(fb_info, fmt, ...) \ 816 pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) 817 818#endif /* _LINUX_FB_H */ 819