| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _LINUX_FB_H |
| 3 | #define _LINUX_FB_H |
| 4 | |
| 5 | #include <linux/refcount.h> |
| 6 | #include <linux/kgdb.h> |
| 7 | #include <uapi/linux/fb.h> |
| 8 | |
| 9 | #define FBIO_CURSOR _IOWR('F', 0x08, struct fb_cursor_user) |
| 10 | |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/workqueue.h> |
| 14 | #include <linux/notifier.h> |
| 15 | #include <linux/list.h> |
| 16 | #include <linux/backlight.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <asm/io.h> |
| 19 | |
| 20 | struct vm_area_struct; |
| 21 | struct fb_info; |
| 22 | struct device; |
| 23 | struct file; |
| 24 | struct videomode; |
| 25 | struct device_node; |
| 26 | |
| 27 | /* Definitions below are used in the parsed monitor specs */ |
| 28 | #define FB_DPMS_ACTIVE_OFF 1 |
| 29 | #define FB_DPMS_SUSPEND 2 |
| 30 | #define FB_DPMS_STANDBY 4 |
| 31 | |
| 32 | #define FB_DISP_DDI 1 |
| 33 | #define FB_DISP_ANA_700_300 2 |
| 34 | #define FB_DISP_ANA_714_286 4 |
| 35 | #define FB_DISP_ANA_1000_400 8 |
| 36 | #define FB_DISP_ANA_700_000 16 |
| 37 | |
| 38 | #define FB_DISP_MONO 32 |
| 39 | #define FB_DISP_RGB 64 |
| 40 | #define FB_DISP_MULTI 128 |
| 41 | #define FB_DISP_UNKNOWN 256 |
| 42 | |
| 43 | #define FB_SIGNAL_NONE 0 |
| 44 | #define FB_SIGNAL_BLANK_BLANK 1 |
| 45 | #define FB_SIGNAL_SEPARATE 2 |
| 46 | #define FB_SIGNAL_COMPOSITE 4 |
| 47 | #define FB_SIGNAL_SYNC_ON_GREEN 8 |
| 48 | #define FB_SIGNAL_SERRATION_ON 16 |
| 49 | |
| 50 | #define FB_MISC_PRIM_COLOR 1 |
| 51 | #define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */ |
| 52 | #define FB_MISC_HDMI 4 |
| 53 | struct fb_chroma { |
| 54 | __u32 redx; /* in fraction of 1024 */ |
| 55 | __u32 greenx; |
| 56 | __u32 bluex; |
| 57 | __u32 whitex; |
| 58 | __u32 redy; |
| 59 | __u32 greeny; |
| 60 | __u32 bluey; |
| 61 | __u32 whitey; |
| 62 | }; |
| 63 | |
| 64 | struct fb_monspecs { |
| 65 | struct fb_chroma chroma; |
| 66 | struct fb_videomode *modedb; /* mode database */ |
| 67 | __u8 manufacturer[4]; /* Manufacturer */ |
| 68 | __u8 monitor[14]; /* Monitor String */ |
| 69 | __u8 serial_no[14]; /* Serial Number */ |
| 70 | __u8 ascii[14]; /* ? */ |
| 71 | __u32 modedb_len; /* mode database length */ |
| 72 | __u32 model; /* Monitor Model */ |
| 73 | __u32 serial; /* Serial Number - Integer */ |
| 74 | __u32 year; /* Year manufactured */ |
| 75 | __u32 week; /* Week Manufactured */ |
| 76 | __u32 hfmin; /* hfreq lower limit (Hz) */ |
| 77 | __u32 hfmax; /* hfreq upper limit (Hz) */ |
| 78 | __u32 dclkmin; /* pixelclock lower limit (Hz) */ |
| 79 | __u32 dclkmax; /* pixelclock upper limit (Hz) */ |
| 80 | __u16 input; /* display type - see FB_DISP_* */ |
| 81 | __u16 dpms; /* DPMS support - see FB_DPMS_ */ |
| 82 | __u16 signal; /* Signal Type - see FB_SIGNAL_* */ |
| 83 | __u16 vfmin; /* vfreq lower limit (Hz) */ |
| 84 | __u16 vfmax; /* vfreq upper limit (Hz) */ |
| 85 | __u16 gamma; /* Gamma - in fractions of 100 */ |
| 86 | __u16 gtf : 1; /* supports GTF */ |
| 87 | __u16 misc; /* Misc flags - see FB_MISC_* */ |
| 88 | __u8 version; /* EDID version... */ |
| 89 | __u8 revision; /* ...and revision */ |
| 90 | __u8 max_x; /* Maximum horizontal size (cm) */ |
| 91 | __u8 max_y; /* Maximum vertical size (cm) */ |
| 92 | }; |
| 93 | |
| 94 | struct fb_cmap_user { |
| 95 | __u32 start; /* First entry */ |
| 96 | __u32 len; /* Number of entries */ |
| 97 | __u16 __user *red; /* Red values */ |
| 98 | __u16 __user *green; |
| 99 | __u16 __user *blue; |
| 100 | __u16 __user *transp; /* transparency, can be NULL */ |
| 101 | }; |
| 102 | |
| 103 | struct fb_image_user { |
| 104 | __u32 dx; /* Where to place image */ |
| 105 | __u32 dy; |
| 106 | __u32 width; /* Size of image */ |
| 107 | __u32 height; |
| 108 | __u32 fg_color; /* Only used when a mono bitmap */ |
| 109 | __u32 bg_color; |
| 110 | __u8 depth; /* Depth of the image */ |
| 111 | const char __user *data; /* Pointer to image data */ |
| 112 | struct fb_cmap_user cmap; /* color map info */ |
| 113 | }; |
| 114 | |
| 115 | struct fb_cursor_user { |
| 116 | __u16 set; /* what to set */ |
| 117 | __u16 enable; /* cursor on/off */ |
| 118 | __u16 rop; /* bitop operation */ |
| 119 | const char __user *mask; /* cursor mask bits */ |
| 120 | struct fbcurpos hot; /* cursor hot spot */ |
| 121 | struct fb_image_user image; /* Cursor image */ |
| 122 | }; |
| 123 | |
| 124 | /* |
| 125 | * Register/unregister for framebuffer events |
| 126 | */ |
| 127 | |
| 128 | /* The resolution of the passed in fb_info about to change */ |
| 129 | #define FB_EVENT_MODE_CHANGE 0x01 |
| 130 | |
| 131 | #ifdef CONFIG_GUMSTIX_AM200EPD |
| 132 | /* only used by mach-pxa/am200epd.c */ |
| 133 | #define FB_EVENT_FB_REGISTERED 0x05 |
| 134 | #define FB_EVENT_FB_UNREGISTERED 0x06 |
| 135 | #endif |
| 136 | |
| 137 | /* A display blank is requested */ |
| 138 | #define FB_EVENT_BLANK 0x09 |
| 139 | |
| 140 | struct fb_event { |
| 141 | struct fb_info *info; |
| 142 | void *data; |
| 143 | }; |
| 144 | |
| 145 | struct fb_blit_caps { |
| 146 | u32 x; |
| 147 | u32 y; |
| 148 | u32 len; |
| 149 | u32 flags; |
| 150 | }; |
| 151 | |
| 152 | #ifdef CONFIG_FB_NOTIFY |
| 153 | extern int fb_register_client(struct notifier_block *nb); |
| 154 | extern int fb_unregister_client(struct notifier_block *nb); |
| 155 | extern int fb_notifier_call_chain(unsigned long val, void *v); |
| 156 | #else |
| 157 | static inline int fb_register_client(struct notifier_block *nb) |
| 158 | { |
| 159 | return 0; |
| 160 | }; |
| 161 | |
| 162 | static inline int fb_unregister_client(struct notifier_block *nb) |
| 163 | { |
| 164 | return 0; |
| 165 | }; |
| 166 | |
| 167 | static inline int fb_notifier_call_chain(unsigned long val, void *v) |
| 168 | { |
| 169 | return 0; |
| 170 | }; |
| 171 | #endif |
| 172 | |
| 173 | /* |
| 174 | * Pixmap structure definition |
| 175 | * |
| 176 | * The purpose of this structure is to translate data |
| 177 | * from the hardware independent format of fbdev to what |
| 178 | * format the hardware needs. |
| 179 | */ |
| 180 | |
| 181 | #define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */ |
| 182 | #define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */ |
| 183 | #define FB_PIXMAP_IO 4 /* memory is iomapped */ |
| 184 | #define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */ |
| 185 | |
| 186 | struct fb_pixmap { |
| 187 | u8 *addr; /* pointer to memory */ |
| 188 | u32 size; /* size of buffer in bytes */ |
| 189 | u32 offset; /* current offset to buffer */ |
| 190 | u32 buf_align; /* byte alignment of each bitmap */ |
| 191 | u32 scan_align; /* alignment per scanline */ |
| 192 | u32 access_align; /* alignment per read/write (bits) */ |
| 193 | u32 flags; /* see FB_PIXMAP_* */ |
| 194 | u32 blit_x; /* supported bit block dimensions (1-32)*/ |
| 195 | u32 blit_y; /* Format: blit_x = 1 << (width - 1) */ |
| 196 | /* blit_y = 1 << (height - 1) */ |
| 197 | /* if 0, will be set to 0xffffffff (all)*/ |
| 198 | /* access methods */ |
| 199 | void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size); |
| 200 | void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size); |
| 201 | }; |
| 202 | |
| 203 | #ifdef CONFIG_FB_DEFERRED_IO |
| 204 | struct fb_deferred_io_pageref { |
| 205 | struct page *page; |
| 206 | unsigned long offset; |
| 207 | /* private */ |
| 208 | struct list_head list; |
| 209 | }; |
| 210 | |
| 211 | struct fb_deferred_io { |
| 212 | /* delay between mkwrite and deferred handler */ |
| 213 | unsigned long delay; |
| 214 | bool sort_pagereflist; /* sort pagelist by offset */ |
| 215 | int open_count; /* number of opened files; protected by fb_info lock */ |
| 216 | struct mutex lock; /* mutex that protects the pageref list */ |
| 217 | struct list_head pagereflist; /* list of pagerefs for touched pages */ |
| 218 | /* callback */ |
| 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 | |
| 237 | struct 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 | /* wait for blit idle, optional */ |
| 282 | int (*fb_sync)(struct fb_info *info); |
| 283 | |
| 284 | /* perform fb specific ioctl (optional) */ |
| 285 | int (*fb_ioctl)(struct fb_info *info, unsigned int cmd, |
| 286 | unsigned long arg); |
| 287 | |
| 288 | /* Handle 32bit compat ioctl (optional) */ |
| 289 | int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd, |
| 290 | unsigned long arg); |
| 291 | |
| 292 | /* perform fb specific mmap */ |
| 293 | int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma); |
| 294 | |
| 295 | /* get capability given var */ |
| 296 | void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps, |
| 297 | struct fb_var_screeninfo *var); |
| 298 | |
| 299 | /* teardown any resources to do with this framebuffer */ |
| 300 | void (*fb_destroy)(struct fb_info *info); |
| 301 | |
| 302 | /* called at KDB enter and leave time to prepare the console */ |
| 303 | int (*fb_debug_enter)(struct fb_info *info); |
| 304 | int (*fb_debug_leave)(struct fb_info *info); |
| 305 | }; |
| 306 | |
| 307 | #ifdef CONFIG_FB_TILEBLITTING |
| 308 | #define FB_TILE_CURSOR_NONE 0 |
| 309 | #define FB_TILE_CURSOR_UNDERLINE 1 |
| 310 | #define FB_TILE_CURSOR_LOWER_THIRD 2 |
| 311 | #define FB_TILE_CURSOR_LOWER_HALF 3 |
| 312 | #define FB_TILE_CURSOR_TWO_THIRDS 4 |
| 313 | #define FB_TILE_CURSOR_BLOCK 5 |
| 314 | |
| 315 | struct fb_tilemap { |
| 316 | __u32 width; /* width of each tile in pixels */ |
| 317 | __u32 height; /* height of each tile in scanlines */ |
| 318 | __u32 depth; /* color depth of each tile */ |
| 319 | __u32 length; /* number of tiles in the map */ |
| 320 | const __u8 *data; /* actual tile map: a bitmap array, packed |
| 321 | to the nearest byte */ |
| 322 | }; |
| 323 | |
| 324 | struct fb_tilerect { |
| 325 | __u32 sx; /* origin in the x-axis */ |
| 326 | __u32 sy; /* origin in the y-axis */ |
| 327 | __u32 width; /* number of tiles in the x-axis */ |
| 328 | __u32 height; /* number of tiles in the y-axis */ |
| 329 | __u32 index; /* what tile to use: index to tile map */ |
| 330 | __u32 fg; /* foreground color */ |
| 331 | __u32 bg; /* background color */ |
| 332 | __u32 rop; /* raster operation */ |
| 333 | }; |
| 334 | |
| 335 | struct fb_tilearea { |
| 336 | __u32 sx; /* source origin in the x-axis */ |
| 337 | __u32 sy; /* source origin in the y-axis */ |
| 338 | __u32 dx; /* destination origin in the x-axis */ |
| 339 | __u32 dy; /* destination origin in the y-axis */ |
| 340 | __u32 width; /* number of tiles in the x-axis */ |
| 341 | __u32 height; /* number of tiles in the y-axis */ |
| 342 | }; |
| 343 | |
| 344 | struct fb_tileblit { |
| 345 | __u32 sx; /* origin in the x-axis */ |
| 346 | __u32 sy; /* origin in the y-axis */ |
| 347 | __u32 width; /* number of tiles in the x-axis */ |
| 348 | __u32 height; /* number of tiles in the y-axis */ |
| 349 | __u32 fg; /* foreground color */ |
| 350 | __u32 bg; /* background color */ |
| 351 | __u32 length; /* number of tiles to draw */ |
| 352 | __u32 *indices; /* array of indices to tile map */ |
| 353 | }; |
| 354 | |
| 355 | struct fb_tilecursor { |
| 356 | __u32 sx; /* cursor position in the x-axis */ |
| 357 | __u32 sy; /* cursor position in the y-axis */ |
| 358 | __u32 mode; /* 0 = erase, 1 = draw */ |
| 359 | __u32 shape; /* see FB_TILE_CURSOR_* */ |
| 360 | __u32 fg; /* foreground color */ |
| 361 | __u32 bg; /* background color */ |
| 362 | }; |
| 363 | |
| 364 | struct fb_tile_ops { |
| 365 | /* set tile characteristics */ |
| 366 | void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map); |
| 367 | |
| 368 | /* all dimensions from hereon are in terms of tiles */ |
| 369 | |
| 370 | /* move a rectangular region of tiles from one area to another*/ |
| 371 | void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area); |
| 372 | /* fill a rectangular region with a tile */ |
| 373 | void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect); |
| 374 | /* copy an array of tiles */ |
| 375 | void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit); |
| 376 | /* cursor */ |
| 377 | void (*fb_tilecursor)(struct fb_info *info, |
| 378 | struct fb_tilecursor *cursor); |
| 379 | /* get maximum length of the tile map */ |
| 380 | int (*fb_get_tilemax)(struct fb_info *info); |
| 381 | }; |
| 382 | #endif /* CONFIG_FB_TILEBLITTING */ |
| 383 | |
| 384 | /* FBINFO_* = fb_info.flags bit flags */ |
| 385 | #define FBINFO_DEFAULT 0 |
| 386 | #define FBINFO_HWACCEL_DISABLED 0x0002 |
| 387 | /* When FBINFO_HWACCEL_DISABLED is set: |
| 388 | * Hardware acceleration is turned off. Software implementations |
| 389 | * of required functions (copyarea(), fillrect(), and imageblit()) |
| 390 | * takes over; acceleration engine should be in a quiescent state */ |
| 391 | |
| 392 | /* hints */ |
| 393 | #define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */ |
| 394 | #define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */ |
| 395 | #define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */ |
| 396 | |
| 397 | /* hardware supported ops */ |
| 398 | /* semantics: when a bit is set, it indicates that the operation is |
| 399 | * accelerated by hardware. |
| 400 | * required functions will still work even if the bit is not set. |
| 401 | * optional functions may not even exist if the flag bit is not set. |
| 402 | */ |
| 403 | #define FBINFO_HWACCEL_NONE 0x0000 |
| 404 | #define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */ |
| 405 | #define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */ |
| 406 | #define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */ |
| 407 | #define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */ |
| 408 | #define FBINFO_HWACCEL_XPAN 0x1000 /* optional */ |
| 409 | #define FBINFO_HWACCEL_YPAN 0x2000 /* optional */ |
| 410 | #define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */ |
| 411 | |
| 412 | #define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */ |
| 413 | |
| 414 | /* A driver may set this flag to indicate that it does want a set_par to be |
| 415 | * called every time when fbcon_switch is executed. The advantage is that with |
| 416 | * this flag set you can really be sure that set_par is always called before |
| 417 | * any of the functions dependent on the correct hardware state or altering |
| 418 | * that state, even if you are using some broken X releases. The disadvantage |
| 419 | * is that it introduces unwanted delays to every console switch if set_par |
| 420 | * is slow. It is a good idea to try this flag in the drivers initialization |
| 421 | * code whenever there is a bug report related to switching between X and the |
| 422 | * framebuffer console. |
| 423 | */ |
| 424 | #define FBINFO_MISC_ALWAYS_SETPAR 0x40000 |
| 425 | |
| 426 | /* |
| 427 | * Host and GPU endianness differ. |
| 428 | */ |
| 429 | #define FBINFO_FOREIGN_ENDIAN 0x100000 |
| 430 | /* |
| 431 | * Big endian math. This is the same flags as above, but with different |
| 432 | * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag |
| 433 | * and host endianness. Drivers should not use this flag. |
| 434 | */ |
| 435 | #define FBINFO_BE_MATH 0x100000 |
| 436 | /* |
| 437 | * Hide smem_start in the FBIOGET_FSCREENINFO IOCTL. This is used by modern DRM |
| 438 | * drivers to stop userspace from trying to share buffers behind the kernel's |
| 439 | * back. Instead dma-buf based buffer sharing should be used. |
| 440 | */ |
| 441 | #define FBINFO_HIDE_SMEM_START 0x200000 |
| 442 | |
| 443 | |
| 444 | struct fb_info { |
| 445 | refcount_t count; |
| 446 | int node; |
| 447 | int flags; |
| 448 | /* |
| 449 | * -1 by default, set to a FB_ROTATE_* value by the driver, if it knows |
| 450 | * a lcd is not mounted upright and fbcon should rotate to compensate. |
| 451 | */ |
| 452 | int fbcon_rotate_hint; |
| 453 | struct mutex lock; /* Lock for open/release/ioctl funcs */ |
| 454 | struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */ |
| 455 | struct fb_var_screeninfo var; /* Current var */ |
| 456 | struct fb_fix_screeninfo fix; /* Current fix */ |
| 457 | struct fb_monspecs monspecs; /* Current Monitor specs */ |
| 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 | #if IS_ENABLED(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 | unsigned long npagerefs; |
| 477 | struct fb_deferred_io_pageref *pagerefs; |
| 478 | struct fb_deferred_io *fbdefio; |
| 479 | #endif |
| 480 | |
| 481 | const struct fb_ops *fbops; |
| 482 | struct device *device; /* This is the parent */ |
| 483 | struct device *dev; /* This is this fb device */ |
| 484 | int class_flag; /* private sysfs flags */ |
| 485 | #ifdef CONFIG_FB_TILEBLITTING |
| 486 | struct fb_tile_ops *tileops; /* Tile Blitting */ |
| 487 | #endif |
| 488 | union { |
| 489 | char __iomem *screen_base; /* Virtual address */ |
| 490 | char *screen_buffer; |
| 491 | }; |
| 492 | unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */ |
| 493 | void *pseudo_palette; /* Fake palette of 16 colors */ |
| 494 | #define FBINFO_STATE_RUNNING 0 |
| 495 | #define FBINFO_STATE_SUSPENDED 1 |
| 496 | u32 state; /* Hardware state i.e suspend */ |
| 497 | void *fbcon_par; /* fbcon use-only private area */ |
| 498 | /* From here on everything is device dependent */ |
| 499 | void *par; |
| 500 | |
| 501 | bool skip_vt_switch; /* no VT switch on suspend/resume required */ |
| 502 | }; |
| 503 | |
| 504 | #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT |
| 505 | |
| 506 | /* This will go away |
| 507 | * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags |
| 508 | * when it wants to turn the acceleration engine on. This is |
| 509 | * really a separate operation, and should be modified via sysfs. |
| 510 | * But for now, we leave it broken with the following define |
| 511 | */ |
| 512 | #define STUPID_ACCELF_TEXT_SHIT |
| 513 | |
| 514 | // This will go away |
| 515 | #if defined(__sparc__) |
| 516 | |
| 517 | /* We map all of our framebuffers such that big-endian accesses |
| 518 | * are what we want, so the following is sufficient. |
| 519 | */ |
| 520 | |
| 521 | // This will go away |
| 522 | #define fb_readb sbus_readb |
| 523 | #define fb_readw sbus_readw |
| 524 | #define fb_readl sbus_readl |
| 525 | #define fb_readq sbus_readq |
| 526 | #define fb_writeb sbus_writeb |
| 527 | #define fb_writew sbus_writew |
| 528 | #define fb_writel sbus_writel |
| 529 | #define fb_writeq sbus_writeq |
| 530 | #define fb_memset sbus_memset_io |
| 531 | #define fb_memcpy_fromfb sbus_memcpy_fromio |
| 532 | #define fb_memcpy_tofb sbus_memcpy_toio |
| 533 | |
| 534 | #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || \ |
| 535 | defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || \ |
| 536 | defined(__arm__) || defined(__aarch64__) || defined(__mips__) |
| 537 | |
| 538 | #define fb_readb __raw_readb |
| 539 | #define fb_readw __raw_readw |
| 540 | #define fb_readl __raw_readl |
| 541 | #define fb_readq __raw_readq |
| 542 | #define fb_writeb __raw_writeb |
| 543 | #define fb_writew __raw_writew |
| 544 | #define fb_writel __raw_writel |
| 545 | #define fb_writeq __raw_writeq |
| 546 | #define fb_memset memset_io |
| 547 | #define fb_memcpy_fromfb memcpy_fromio |
| 548 | #define fb_memcpy_tofb memcpy_toio |
| 549 | |
| 550 | #else |
| 551 | |
| 552 | #define fb_readb(addr) (*(volatile u8 *) (addr)) |
| 553 | #define fb_readw(addr) (*(volatile u16 *) (addr)) |
| 554 | #define fb_readl(addr) (*(volatile u32 *) (addr)) |
| 555 | #define fb_readq(addr) (*(volatile u64 *) (addr)) |
| 556 | #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b)) |
| 557 | #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b)) |
| 558 | #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b)) |
| 559 | #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b)) |
| 560 | #define fb_memset memset |
| 561 | #define fb_memcpy_fromfb memcpy |
| 562 | #define fb_memcpy_tofb memcpy |
| 563 | |
| 564 | #endif |
| 565 | |
| 566 | #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0) |
| 567 | #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \ |
| 568 | (val) << (bits)) |
| 569 | #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \ |
| 570 | (val) >> (bits)) |
| 571 | |
| 572 | /* |
| 573 | * `Generic' versions of the frame buffer device operations |
| 574 | */ |
| 575 | |
| 576 | extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); |
| 577 | extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); |
| 578 | extern int fb_blank(struct fb_info *info, int blank); |
| 579 | extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); |
| 580 | extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); |
| 581 | extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image); |
| 582 | /* |
| 583 | * Drawing operations where framebuffer is in system RAM |
| 584 | */ |
| 585 | extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect); |
| 586 | extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area); |
| 587 | extern void sys_imageblit(struct fb_info *info, const struct fb_image *image); |
| 588 | extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf, |
| 589 | size_t count, loff_t *ppos); |
| 590 | extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, |
| 591 | size_t count, loff_t *ppos); |
| 592 | |
| 593 | /* drivers/video/fbmem.c */ |
| 594 | extern int register_framebuffer(struct fb_info *fb_info); |
| 595 | extern void unregister_framebuffer(struct fb_info *fb_info); |
| 596 | extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); |
| 597 | extern int fb_show_logo(struct fb_info *fb_info, int rotate); |
| 598 | extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size); |
| 599 | extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, |
| 600 | u32 height, u32 shift_high, u32 shift_low, u32 mod); |
| 601 | extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height); |
| 602 | extern void fb_set_suspend(struct fb_info *info, int state); |
| 603 | extern int fb_get_color_depth(struct fb_var_screeninfo *var, |
| 604 | struct fb_fix_screeninfo *fix); |
| 605 | extern int fb_get_options(const char *name, char **option); |
| 606 | extern int fb_new_modelist(struct fb_info *info); |
| 607 | |
| 608 | extern bool fb_center_logo; |
| 609 | extern int fb_logo_count; |
| 610 | extern struct class *fb_class; |
| 611 | |
| 612 | static inline void lock_fb_info(struct fb_info *info) |
| 613 | { |
| 614 | mutex_lock(&info->lock); |
| 615 | } |
| 616 | |
| 617 | static inline void unlock_fb_info(struct fb_info *info) |
| 618 | { |
| 619 | mutex_unlock(&info->lock); |
| 620 | } |
| 621 | |
| 622 | static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, |
| 623 | u8 *src, u32 s_pitch, u32 height) |
| 624 | { |
| 625 | u32 i, j; |
| 626 | |
| 627 | d_pitch -= s_pitch; |
| 628 | |
| 629 | for (i = height; i--; ) { |
| 630 | /* s_pitch is a few bytes at the most, memcpy is suboptimal */ |
| 631 | for (j = 0; j < s_pitch; j++) |
| 632 | *dst++ = *src++; |
| 633 | dst += d_pitch; |
| 634 | } |
| 635 | } |
| 636 | |
| 637 | /* drivers/video/fb_defio.c */ |
| 638 | int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma); |
| 639 | extern int fb_deferred_io_init(struct fb_info *info); |
| 640 | extern void fb_deferred_io_open(struct fb_info *info, |
| 641 | struct inode *inode, |
| 642 | struct file *file); |
| 643 | extern void fb_deferred_io_release(struct fb_info *info); |
| 644 | extern void fb_deferred_io_cleanup(struct fb_info *info); |
| 645 | extern int fb_deferred_io_fsync(struct file *file, loff_t start, |
| 646 | loff_t end, int datasync); |
| 647 | |
| 648 | static inline bool fb_be_math(struct fb_info *info) |
| 649 | { |
| 650 | #ifdef CONFIG_FB_FOREIGN_ENDIAN |
| 651 | #if defined(CONFIG_FB_BOTH_ENDIAN) |
| 652 | return info->flags & FBINFO_BE_MATH; |
| 653 | #elif defined(CONFIG_FB_BIG_ENDIAN) |
| 654 | return true; |
| 655 | #elif defined(CONFIG_FB_LITTLE_ENDIAN) |
| 656 | return false; |
| 657 | #endif /* CONFIG_FB_BOTH_ENDIAN */ |
| 658 | #else |
| 659 | #ifdef __BIG_ENDIAN |
| 660 | return true; |
| 661 | #else |
| 662 | return false; |
| 663 | #endif /* __BIG_ENDIAN */ |
| 664 | #endif /* CONFIG_FB_FOREIGN_ENDIAN */ |
| 665 | } |
| 666 | |
| 667 | /* drivers/video/fbsysfs.c */ |
| 668 | extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev); |
| 669 | extern void framebuffer_release(struct fb_info *info); |
| 670 | extern int fb_init_device(struct fb_info *fb_info); |
| 671 | extern void fb_cleanup_device(struct fb_info *head); |
| 672 | extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max); |
| 673 | |
| 674 | /* drivers/video/fbmon.c */ |
| 675 | #define FB_MAXTIMINGS 0 |
| 676 | #define FB_VSYNCTIMINGS 1 |
| 677 | #define FB_HSYNCTIMINGS 2 |
| 678 | #define FB_DCLKTIMINGS 3 |
| 679 | #define FB_IGNOREMON 0x100 |
| 680 | |
| 681 | #define FB_MODE_IS_UNKNOWN 0 |
| 682 | #define FB_MODE_IS_DETAILED 1 |
| 683 | #define FB_MODE_IS_STANDARD 2 |
| 684 | #define FB_MODE_IS_VESA 4 |
| 685 | #define FB_MODE_IS_CALCULATED 8 |
| 686 | #define FB_MODE_IS_FIRST 16 |
| 687 | #define FB_MODE_IS_FROM_VAR 32 |
| 688 | |
| 689 | extern int fbmon_dpms(const struct fb_info *fb_info); |
| 690 | extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, |
| 691 | struct fb_info *info); |
| 692 | extern int fb_validate_mode(const struct fb_var_screeninfo *var, |
| 693 | struct fb_info *info); |
| 694 | extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var); |
| 695 | extern const unsigned char *fb_firmware_edid(struct device *device); |
| 696 | extern void fb_edid_to_monspecs(unsigned char *edid, |
| 697 | struct fb_monspecs *specs); |
| 698 | extern void fb_destroy_modedb(struct fb_videomode *modedb); |
| 699 | extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); |
| 700 | extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); |
| 701 | |
| 702 | extern int of_get_fb_videomode(struct device_node *np, |
| 703 | struct fb_videomode *fb, |
| 704 | int index); |
| 705 | extern int fb_videomode_from_videomode(const struct videomode *vm, |
| 706 | struct fb_videomode *fbmode); |
| 707 | |
| 708 | /* drivers/video/modedb.c */ |
| 709 | #define VESA_MODEDB_SIZE 43 |
| 710 | #define DMT_SIZE 0x50 |
| 711 | |
| 712 | extern void fb_var_to_videomode(struct fb_videomode *mode, |
| 713 | const struct fb_var_screeninfo *var); |
| 714 | extern void fb_videomode_to_var(struct fb_var_screeninfo *var, |
| 715 | const struct fb_videomode *mode); |
| 716 | extern int fb_mode_is_equal(const struct fb_videomode *mode1, |
| 717 | const struct fb_videomode *mode2); |
| 718 | extern int fb_add_videomode(const struct fb_videomode *mode, |
| 719 | struct list_head *head); |
| 720 | extern void fb_delete_videomode(const struct fb_videomode *mode, |
| 721 | struct list_head *head); |
| 722 | extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, |
| 723 | struct list_head *head); |
| 724 | extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, |
| 725 | struct list_head *head); |
| 726 | extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, |
| 727 | struct list_head *head); |
| 728 | extern void fb_destroy_modelist(struct list_head *head); |
| 729 | extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, |
| 730 | struct list_head *head); |
| 731 | extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, |
| 732 | struct list_head *head); |
| 733 | |
| 734 | /* drivers/video/fbcmap.c */ |
| 735 | extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp); |
| 736 | extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags); |
| 737 | extern void fb_dealloc_cmap(struct fb_cmap *cmap); |
| 738 | extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to); |
| 739 | extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to); |
| 740 | extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info); |
| 741 | extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info); |
| 742 | extern const struct fb_cmap *fb_default_cmap(int len); |
| 743 | extern void fb_invert_cmaps(void); |
| 744 | |
| 745 | struct fb_videomode { |
| 746 | const char *name; /* optional */ |
| 747 | u32 refresh; /* optional */ |
| 748 | u32 xres; |
| 749 | u32 yres; |
| 750 | u32 pixclock; |
| 751 | u32 left_margin; |
| 752 | u32 right_margin; |
| 753 | u32 upper_margin; |
| 754 | u32 lower_margin; |
| 755 | u32 hsync_len; |
| 756 | u32 vsync_len; |
| 757 | u32 sync; |
| 758 | u32 vmode; |
| 759 | u32 flag; |
| 760 | }; |
| 761 | |
| 762 | struct dmt_videomode { |
| 763 | u32 dmt_id; |
| 764 | u32 std_2byte_code; |
| 765 | u32 cvt_3byte_code; |
| 766 | const struct fb_videomode *mode; |
| 767 | }; |
| 768 | |
| 769 | extern const struct fb_videomode vesa_modes[]; |
| 770 | extern const struct dmt_videomode dmt_modes[]; |
| 771 | |
| 772 | struct fb_modelist { |
| 773 | struct list_head list; |
| 774 | struct fb_videomode mode; |
| 775 | }; |
| 776 | |
| 777 | extern int fb_find_mode(struct fb_var_screeninfo *var, |
| 778 | struct fb_info *info, const char *mode_option, |
| 779 | const struct fb_videomode *db, |
| 780 | unsigned int dbsize, |
| 781 | const struct fb_videomode *default_mode, |
| 782 | unsigned int default_bpp); |
| 783 | |
| 784 | #if defined(CONFIG_VIDEO_NOMODESET) |
| 785 | bool fb_modesetting_disabled(const char *drvname); |
| 786 | #else |
| 787 | static inline bool fb_modesetting_disabled(const char *drvname) |
| 788 | { |
| 789 | return false; |
| 790 | } |
| 791 | #endif |
| 792 | |
| 793 | /* Convenience logging macros */ |
| 794 | #define fb_err(fb_info, fmt, ...) \ |
| 795 | pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
| 796 | #define fb_notice(info, fmt, ...) \ |
| 797 | pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
| 798 | #define fb_warn(fb_info, fmt, ...) \ |
| 799 | pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
| 800 | #define fb_info(fb_info, fmt, ...) \ |
| 801 | pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
| 802 | #define fb_dbg(fb_info, fmt, ...) \ |
| 803 | pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
| 804 | |
| 805 | #endif /* _LINUX_FB_H */ |