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 being 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 occurred */ |
163 | #define FB_EARLY_EVENT_BLANK 0x10 |
164 | /* A hardware display blank revert early change occurred */ |
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 | * Hide smem_start in the FBIOGET_FSCREENINFO IOCTL. This is used by modern DRM |
461 | * drivers to stop userspace from trying to share buffers behind the kernel's |
462 | * back. Instead dma-buf based buffer sharing should be used. |
463 | */ |
464 | #define FBINFO_HIDE_SMEM_START 0x200000 |
465 | |
466 | |
467 | struct fb_info { |
468 | atomic_t count; |
469 | int node; |
470 | int flags; |
471 | /* |
472 | * -1 by default, set to a FB_ROTATE_* value by the driver, if it knows |
473 | * a lcd is not mounted upright and fbcon should rotate to compensate. |
474 | */ |
475 | int fbcon_rotate_hint; |
476 | struct mutex lock; /* Lock for open/release/ioctl funcs */ |
477 | struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */ |
478 | struct fb_var_screeninfo var; /* Current var */ |
479 | struct fb_fix_screeninfo fix; /* Current fix */ |
480 | struct fb_monspecs monspecs; /* Current Monitor specs */ |
481 | struct work_struct queue; /* Framebuffer event queue */ |
482 | struct fb_pixmap pixmap; /* Image hardware mapper */ |
483 | struct fb_pixmap sprite; /* Cursor hardware mapper */ |
484 | struct fb_cmap cmap; /* Current cmap */ |
485 | struct list_head modelist; /* mode list */ |
486 | struct fb_videomode *mode; /* current mode */ |
487 | |
488 | #if IS_ENABLED(CONFIG_FB_BACKLIGHT) |
489 | /* assigned backlight device */ |
490 | /* set before framebuffer registration, |
491 | remove after unregister */ |
492 | struct backlight_device *bl_dev; |
493 | |
494 | /* Backlight level curve */ |
495 | struct mutex bl_curve_mutex; |
496 | u8 bl_curve[FB_BACKLIGHT_LEVELS]; |
497 | #endif |
498 | #ifdef CONFIG_FB_DEFERRED_IO |
499 | struct delayed_work deferred_work; |
500 | struct fb_deferred_io *fbdefio; |
501 | #endif |
502 | |
503 | struct fb_ops *fbops; |
504 | struct device *device; /* This is the parent */ |
505 | struct device *dev; /* This is this fb device */ |
506 | int class_flag; /* private sysfs flags */ |
507 | #ifdef CONFIG_FB_TILEBLITTING |
508 | struct fb_tile_ops *tileops; /* Tile Blitting */ |
509 | #endif |
510 | union { |
511 | char __iomem *screen_base; /* Virtual address */ |
512 | char *screen_buffer; |
513 | }; |
514 | unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */ |
515 | void *pseudo_palette; /* Fake palette of 16 colors */ |
516 | #define FBINFO_STATE_RUNNING 0 |
517 | #define FBINFO_STATE_SUSPENDED 1 |
518 | u32 state; /* Hardware state i.e suspend */ |
519 | void *fbcon_par; /* fbcon use-only private area */ |
520 | /* From here on everything is device dependent */ |
521 | void *par; |
522 | /* we need the PCI or similar aperture base/size not |
523 | smem_start/size as smem_start may just be an object |
524 | allocated inside the aperture so may not actually overlap */ |
525 | struct apertures_struct { |
526 | unsigned int count; |
527 | struct aperture { |
528 | resource_size_t base; |
529 | resource_size_t size; |
530 | } ranges[0]; |
531 | } *apertures; |
532 | |
533 | bool skip_vt_switch; /* no VT switch on suspend/resume required */ |
534 | }; |
535 | |
536 | static inline struct apertures_struct *alloc_apertures(unsigned int max_num) { |
537 | struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct) |
538 | + max_num * sizeof(struct aperture), GFP_KERNEL); |
539 | if (!a) |
540 | return NULL; |
541 | a->count = max_num; |
542 | return a; |
543 | } |
544 | |
545 | #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT |
546 | |
547 | /* This will go away |
548 | * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags |
549 | * when it wants to turn the acceleration engine on. This is |
550 | * really a separate operation, and should be modified via sysfs. |
551 | * But for now, we leave it broken with the following define |
552 | */ |
553 | #define STUPID_ACCELF_TEXT_SHIT |
554 | |
555 | // This will go away |
556 | #if defined(__sparc__) |
557 | |
558 | /* We map all of our framebuffers such that big-endian accesses |
559 | * are what we want, so the following is sufficient. |
560 | */ |
561 | |
562 | // This will go away |
563 | #define fb_readb sbus_readb |
564 | #define fb_readw sbus_readw |
565 | #define fb_readl sbus_readl |
566 | #define fb_readq sbus_readq |
567 | #define fb_writeb sbus_writeb |
568 | #define fb_writew sbus_writew |
569 | #define fb_writel sbus_writel |
570 | #define fb_writeq sbus_writeq |
571 | #define fb_memset sbus_memset_io |
572 | #define fb_memcpy_fromfb sbus_memcpy_fromio |
573 | #define fb_memcpy_tofb sbus_memcpy_toio |
574 | |
575 | #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || \ |
576 | defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || \ |
577 | defined(__arm__) || defined(__aarch64__) |
578 | |
579 | #define fb_readb __raw_readb |
580 | #define fb_readw __raw_readw |
581 | #define fb_readl __raw_readl |
582 | #define fb_readq __raw_readq |
583 | #define fb_writeb __raw_writeb |
584 | #define fb_writew __raw_writew |
585 | #define fb_writel __raw_writel |
586 | #define fb_writeq __raw_writeq |
587 | #define fb_memset memset_io |
588 | #define fb_memcpy_fromfb memcpy_fromio |
589 | #define fb_memcpy_tofb memcpy_toio |
590 | |
591 | #else |
592 | |
593 | #define fb_readb(addr) (*(volatile u8 *) (addr)) |
594 | #define fb_readw(addr) (*(volatile u16 *) (addr)) |
595 | #define fb_readl(addr) (*(volatile u32 *) (addr)) |
596 | #define fb_readq(addr) (*(volatile u64 *) (addr)) |
597 | #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b)) |
598 | #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b)) |
599 | #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b)) |
600 | #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b)) |
601 | #define fb_memset memset |
602 | #define fb_memcpy_fromfb memcpy |
603 | #define fb_memcpy_tofb memcpy |
604 | |
605 | #endif |
606 | |
607 | #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0) |
608 | #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \ |
609 | (val) << (bits)) |
610 | #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \ |
611 | (val) >> (bits)) |
612 | |
613 | /* |
614 | * `Generic' versions of the frame buffer device operations |
615 | */ |
616 | |
617 | extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); |
618 | extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); |
619 | extern int fb_blank(struct fb_info *info, int blank); |
620 | extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); |
621 | extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); |
622 | extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image); |
623 | /* |
624 | * Drawing operations where framebuffer is in system RAM |
625 | */ |
626 | extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect); |
627 | extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area); |
628 | extern void sys_imageblit(struct fb_info *info, const struct fb_image *image); |
629 | extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf, |
630 | size_t count, loff_t *ppos); |
631 | extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, |
632 | size_t count, loff_t *ppos); |
633 | |
634 | /* drivers/video/fbmem.c */ |
635 | extern int register_framebuffer(struct fb_info *fb_info); |
636 | extern int unregister_framebuffer(struct fb_info *fb_info); |
637 | extern int unlink_framebuffer(struct fb_info *fb_info); |
638 | extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, int res_id, |
639 | const char *name); |
640 | extern int remove_conflicting_framebuffers(struct apertures_struct *a, |
641 | const char *name, bool primary); |
642 | extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); |
643 | extern int fb_show_logo(struct fb_info *fb_info, int rotate); |
644 | extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size); |
645 | extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, |
646 | u32 height, u32 shift_high, u32 shift_low, u32 mod); |
647 | extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height); |
648 | extern void fb_set_suspend(struct fb_info *info, int state); |
649 | extern int fb_get_color_depth(struct fb_var_screeninfo *var, |
650 | struct fb_fix_screeninfo *fix); |
651 | extern int fb_get_options(const char *name, char **option); |
652 | extern int fb_new_modelist(struct fb_info *info); |
653 | |
654 | extern struct fb_info *registered_fb[FB_MAX]; |
655 | extern int num_registered_fb; |
656 | extern bool fb_center_logo; |
657 | extern struct class *fb_class; |
658 | |
659 | #define for_each_registered_fb(i) \ |
660 | for (i = 0; i < FB_MAX; i++) \ |
661 | if (!registered_fb[i]) {} else |
662 | |
663 | extern int lock_fb_info(struct fb_info *info); |
664 | |
665 | static inline void unlock_fb_info(struct fb_info *info) |
666 | { |
667 | mutex_unlock(&info->lock); |
668 | } |
669 | |
670 | static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, |
671 | u8 *src, u32 s_pitch, u32 height) |
672 | { |
673 | u32 i, j; |
674 | |
675 | d_pitch -= s_pitch; |
676 | |
677 | for (i = height; i--; ) { |
678 | /* s_pitch is a few bytes at the most, memcpy is suboptimal */ |
679 | for (j = 0; j < s_pitch; j++) |
680 | *dst++ = *src++; |
681 | dst += d_pitch; |
682 | } |
683 | } |
684 | |
685 | /* drivers/video/fb_defio.c */ |
686 | int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma); |
687 | extern void fb_deferred_io_init(struct fb_info *info); |
688 | extern void fb_deferred_io_open(struct fb_info *info, |
689 | struct inode *inode, |
690 | struct file *file); |
691 | extern void fb_deferred_io_cleanup(struct fb_info *info); |
692 | extern int fb_deferred_io_fsync(struct file *file, loff_t start, |
693 | loff_t end, int datasync); |
694 | |
695 | static inline bool fb_be_math(struct fb_info *info) |
696 | { |
697 | #ifdef CONFIG_FB_FOREIGN_ENDIAN |
698 | #if defined(CONFIG_FB_BOTH_ENDIAN) |
699 | return info->flags & FBINFO_BE_MATH; |
700 | #elif defined(CONFIG_FB_BIG_ENDIAN) |
701 | return true; |
702 | #elif defined(CONFIG_FB_LITTLE_ENDIAN) |
703 | return false; |
704 | #endif /* CONFIG_FB_BOTH_ENDIAN */ |
705 | #else |
706 | #ifdef __BIG_ENDIAN |
707 | return true; |
708 | #else |
709 | return false; |
710 | #endif /* __BIG_ENDIAN */ |
711 | #endif /* CONFIG_FB_FOREIGN_ENDIAN */ |
712 | } |
713 | |
714 | /* drivers/video/fbsysfs.c */ |
715 | extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev); |
716 | extern void framebuffer_release(struct fb_info *info); |
717 | extern int fb_init_device(struct fb_info *fb_info); |
718 | extern void fb_cleanup_device(struct fb_info *head); |
719 | extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max); |
720 | |
721 | /* drivers/video/fbmon.c */ |
722 | #define FB_MAXTIMINGS 0 |
723 | #define FB_VSYNCTIMINGS 1 |
724 | #define FB_HSYNCTIMINGS 2 |
725 | #define FB_DCLKTIMINGS 3 |
726 | #define FB_IGNOREMON 0x100 |
727 | |
728 | #define FB_MODE_IS_UNKNOWN 0 |
729 | #define FB_MODE_IS_DETAILED 1 |
730 | #define FB_MODE_IS_STANDARD 2 |
731 | #define FB_MODE_IS_VESA 4 |
732 | #define FB_MODE_IS_CALCULATED 8 |
733 | #define FB_MODE_IS_FIRST 16 |
734 | #define FB_MODE_IS_FROM_VAR 32 |
735 | |
736 | extern int fbmon_dpms(const struct fb_info *fb_info); |
737 | extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, |
738 | struct fb_info *info); |
739 | extern int fb_validate_mode(const struct fb_var_screeninfo *var, |
740 | struct fb_info *info); |
741 | extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var); |
742 | extern const unsigned char *fb_firmware_edid(struct device *device); |
743 | extern void fb_edid_to_monspecs(unsigned char *edid, |
744 | struct fb_monspecs *specs); |
745 | extern void fb_edid_add_monspecs(unsigned char *edid, |
746 | struct fb_monspecs *specs); |
747 | extern void fb_destroy_modedb(struct fb_videomode *modedb); |
748 | extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); |
749 | extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); |
750 | |
751 | extern int of_get_fb_videomode(struct device_node *np, |
752 | struct fb_videomode *fb, |
753 | int index); |
754 | extern int fb_videomode_from_videomode(const struct videomode *vm, |
755 | struct fb_videomode *fbmode); |
756 | |
757 | /* drivers/video/modedb.c */ |
758 | #define VESA_MODEDB_SIZE 43 |
759 | #define DMT_SIZE 0x50 |
760 | |
761 | extern void fb_var_to_videomode(struct fb_videomode *mode, |
762 | const struct fb_var_screeninfo *var); |
763 | extern void fb_videomode_to_var(struct fb_var_screeninfo *var, |
764 | const struct fb_videomode *mode); |
765 | extern int fb_mode_is_equal(const struct fb_videomode *mode1, |
766 | const struct fb_videomode *mode2); |
767 | extern int fb_add_videomode(const struct fb_videomode *mode, |
768 | struct list_head *head); |
769 | extern void fb_delete_videomode(const struct fb_videomode *mode, |
770 | struct list_head *head); |
771 | extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, |
772 | struct list_head *head); |
773 | extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, |
774 | struct list_head *head); |
775 | extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, |
776 | struct list_head *head); |
777 | extern void fb_destroy_modelist(struct list_head *head); |
778 | extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, |
779 | struct list_head *head); |
780 | extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, |
781 | struct list_head *head); |
782 | |
783 | /* drivers/video/fbcmap.c */ |
784 | extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp); |
785 | extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags); |
786 | extern void fb_dealloc_cmap(struct fb_cmap *cmap); |
787 | extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to); |
788 | extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to); |
789 | extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info); |
790 | extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info); |
791 | extern const struct fb_cmap *fb_default_cmap(int len); |
792 | extern void fb_invert_cmaps(void); |
793 | |
794 | struct fb_videomode { |
795 | const char *name; /* optional */ |
796 | u32 refresh; /* optional */ |
797 | u32 xres; |
798 | u32 yres; |
799 | u32 pixclock; |
800 | u32 left_margin; |
801 | u32 right_margin; |
802 | u32 upper_margin; |
803 | u32 lower_margin; |
804 | u32 hsync_len; |
805 | u32 vsync_len; |
806 | u32 sync; |
807 | u32 vmode; |
808 | u32 flag; |
809 | }; |
810 | |
811 | struct dmt_videomode { |
812 | u32 dmt_id; |
813 | u32 std_2byte_code; |
814 | u32 cvt_3byte_code; |
815 | const struct fb_videomode *mode; |
816 | }; |
817 | |
818 | extern const char *fb_mode_option; |
819 | extern const struct fb_videomode vesa_modes[]; |
820 | extern const struct fb_videomode cea_modes[65]; |
821 | extern const struct dmt_videomode dmt_modes[]; |
822 | |
823 | struct fb_modelist { |
824 | struct list_head list; |
825 | struct fb_videomode mode; |
826 | }; |
827 | |
828 | extern int fb_find_mode(struct fb_var_screeninfo *var, |
829 | struct fb_info *info, const char *mode_option, |
830 | const struct fb_videomode *db, |
831 | unsigned int dbsize, |
832 | const struct fb_videomode *default_mode, |
833 | unsigned int default_bpp); |
834 | |
835 | /* Convenience logging macros */ |
836 | #define fb_err(fb_info, fmt, ...) \ |
837 | pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
838 | #define fb_notice(info, fmt, ...) \ |
839 | pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
840 | #define fb_warn(fb_info, fmt, ...) \ |
841 | pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
842 | #define fb_info(fb_info, fmt, ...) \ |
843 | pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
844 | #define fb_dbg(fb_info, fmt, ...) \ |
845 | pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) |
846 | |
847 | #endif /* _LINUX_FB_H */ |
848 | |