]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/fb.h
Merge branch 'for-linus-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
[mirror_ubuntu-bionic-kernel.git] / include / linux / fb.h
1 #ifndef _LINUX_FB_H
2 #define _LINUX_FB_H
3
4 #include <linux/kgdb.h>
5 #include <uapi/linux/fb.h>
6
7 #define FBIO_CURSOR _IOWR('F', 0x08, struct fb_cursor_user)
8
9 #include <linux/fs.h>
10 #include <linux/init.h>
11 #include <linux/workqueue.h>
12 #include <linux/notifier.h>
13 #include <linux/list.h>
14 #include <linux/backlight.h>
15 #include <linux/slab.h>
16 #include <asm/io.h>
17
18 struct vm_area_struct;
19 struct fb_info;
20 struct device;
21 struct file;
22 struct videomode;
23 struct device_node;
24
25 /* Definitions below are used in the parsed monitor specs */
26 #define FB_DPMS_ACTIVE_OFF 1
27 #define FB_DPMS_SUSPEND 2
28 #define FB_DPMS_STANDBY 4
29
30 #define FB_DISP_DDI 1
31 #define FB_DISP_ANA_700_300 2
32 #define FB_DISP_ANA_714_286 4
33 #define FB_DISP_ANA_1000_400 8
34 #define FB_DISP_ANA_700_000 16
35
36 #define FB_DISP_MONO 32
37 #define FB_DISP_RGB 64
38 #define FB_DISP_MULTI 128
39 #define FB_DISP_UNKNOWN 256
40
41 #define FB_SIGNAL_NONE 0
42 #define FB_SIGNAL_BLANK_BLANK 1
43 #define FB_SIGNAL_SEPARATE 2
44 #define FB_SIGNAL_COMPOSITE 4
45 #define FB_SIGNAL_SYNC_ON_GREEN 8
46 #define FB_SIGNAL_SERRATION_ON 16
47
48 #define FB_MISC_PRIM_COLOR 1
49 #define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */
50 #define FB_MISC_HDMI 4
51 struct fb_chroma {
52 __u32 redx; /* in fraction of 1024 */
53 __u32 greenx;
54 __u32 bluex;
55 __u32 whitex;
56 __u32 redy;
57 __u32 greeny;
58 __u32 bluey;
59 __u32 whitey;
60 };
61
62 struct fb_monspecs {
63 struct fb_chroma chroma;
64 struct fb_videomode *modedb; /* mode database */
65 __u8 manufacturer[4]; /* Manufacturer */
66 __u8 monitor[14]; /* Monitor String */
67 __u8 serial_no[14]; /* Serial Number */
68 __u8 ascii[14]; /* ? */
69 __u32 modedb_len; /* mode database length */
70 __u32 model; /* Monitor Model */
71 __u32 serial; /* Serial Number - Integer */
72 __u32 year; /* Year manufactured */
73 __u32 week; /* Week Manufactured */
74 __u32 hfmin; /* hfreq lower limit (Hz) */
75 __u32 hfmax; /* hfreq upper limit (Hz) */
76 __u32 dclkmin; /* pixelclock lower limit (Hz) */
77 __u32 dclkmax; /* pixelclock upper limit (Hz) */
78 __u16 input; /* display type - see FB_DISP_* */
79 __u16 dpms; /* DPMS support - see FB_DPMS_ */
80 __u16 signal; /* Signal Type - see FB_SIGNAL_* */
81 __u16 vfmin; /* vfreq lower limit (Hz) */
82 __u16 vfmax; /* vfreq upper limit (Hz) */
83 __u16 gamma; /* Gamma - in fractions of 100 */
84 __u16 gtf : 1; /* supports GTF */
85 __u16 misc; /* Misc flags - see FB_MISC_* */
86 __u8 version; /* EDID version... */
87 __u8 revision; /* ...and revision */
88 __u8 max_x; /* Maximum horizontal size (cm) */
89 __u8 max_y; /* Maximum vertical size (cm) */
90 };
91
92 struct fb_cmap_user {
93 __u32 start; /* First entry */
94 __u32 len; /* Number of entries */
95 __u16 __user *red; /* Red values */
96 __u16 __user *green;
97 __u16 __user *blue;
98 __u16 __user *transp; /* transparency, can be NULL */
99 };
100
101 struct fb_image_user {
102 __u32 dx; /* Where to place image */
103 __u32 dy;
104 __u32 width; /* Size of image */
105 __u32 height;
106 __u32 fg_color; /* Only used when a mono bitmap */
107 __u32 bg_color;
108 __u8 depth; /* Depth of the image */
109 const char __user *data; /* Pointer to image data */
110 struct fb_cmap_user cmap; /* color map info */
111 };
112
113 struct fb_cursor_user {
114 __u16 set; /* what to set */
115 __u16 enable; /* cursor on/off */
116 __u16 rop; /* bitop operation */
117 const char __user *mask; /* cursor mask bits */
118 struct fbcurpos hot; /* cursor hot spot */
119 struct fb_image_user image; /* Cursor image */
120 };
121
122 /*
123 * Register/unregister for framebuffer events
124 */
125
126 /* The resolution of the passed in fb_info about to change */
127 #define FB_EVENT_MODE_CHANGE 0x01
128 /* The display on this fb_info is beeing suspended, no access to the
129 * framebuffer is allowed any more after that call returns
130 */
131 #define FB_EVENT_SUSPEND 0x02
132 /* The display on this fb_info was resumed, you can restore the display
133 * if you own it
134 */
135 #define FB_EVENT_RESUME 0x03
136 /* An entry from the modelist was removed */
137 #define FB_EVENT_MODE_DELETE 0x04
138 /* A driver registered itself */
139 #define FB_EVENT_FB_REGISTERED 0x05
140 /* A driver unregistered itself */
141 #define FB_EVENT_FB_UNREGISTERED 0x06
142 /* CONSOLE-SPECIFIC: get console to framebuffer mapping */
143 #define FB_EVENT_GET_CONSOLE_MAP 0x07
144 /* CONSOLE-SPECIFIC: set console to framebuffer mapping */
145 #define FB_EVENT_SET_CONSOLE_MAP 0x08
146 /* A hardware display blank change occurred */
147 #define FB_EVENT_BLANK 0x09
148 /* Private modelist is to be replaced */
149 #define FB_EVENT_NEW_MODELIST 0x0A
150 /* The resolution of the passed in fb_info about to change and
151 all vc's should be changed */
152 #define FB_EVENT_MODE_CHANGE_ALL 0x0B
153 /* A software display blank change occurred */
154 #define FB_EVENT_CONBLANK 0x0C
155 /* Get drawing requirements */
156 #define FB_EVENT_GET_REQ 0x0D
157 /* Unbind from the console if possible */
158 #define FB_EVENT_FB_UNBIND 0x0E
159 /* CONSOLE-SPECIFIC: remap all consoles to new fb - for vga_switcheroo */
160 #define FB_EVENT_REMAP_ALL_CONSOLE 0x0F
161 /* A hardware display blank early change occured */
162 #define FB_EARLY_EVENT_BLANK 0x10
163 /* A hardware display blank revert early change occured */
164 #define FB_R_EARLY_EVENT_BLANK 0x11
165
166 struct fb_event {
167 struct fb_info *info;
168 void *data;
169 };
170
171 struct fb_blit_caps {
172 u32 x;
173 u32 y;
174 u32 len;
175 u32 flags;
176 };
177
178 #ifdef CONFIG_FB_NOTIFY
179 extern int fb_register_client(struct notifier_block *nb);
180 extern int fb_unregister_client(struct notifier_block *nb);
181 extern int fb_notifier_call_chain(unsigned long val, void *v);
182 #else
183 static inline int fb_register_client(struct notifier_block *nb)
184 {
185 return 0;
186 };
187
188 static inline int fb_unregister_client(struct notifier_block *nb)
189 {
190 return 0;
191 };
192
193 static inline int fb_notifier_call_chain(unsigned long val, void *v)
194 {
195 return 0;
196 };
197 #endif
198
199 /*
200 * Pixmap structure definition
201 *
202 * The purpose of this structure is to translate data
203 * from the hardware independent format of fbdev to what
204 * format the hardware needs.
205 */
206
207 #define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */
208 #define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */
209 #define FB_PIXMAP_IO 4 /* memory is iomapped */
210 #define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */
211
212 struct fb_pixmap {
213 u8 *addr; /* pointer to memory */
214 u32 size; /* size of buffer in bytes */
215 u32 offset; /* current offset to buffer */
216 u32 buf_align; /* byte alignment of each bitmap */
217 u32 scan_align; /* alignment per scanline */
218 u32 access_align; /* alignment per read/write (bits) */
219 u32 flags; /* see FB_PIXMAP_* */
220 u32 blit_x; /* supported bit block dimensions (1-32)*/
221 u32 blit_y; /* Format: blit_x = 1 << (width - 1) */
222 /* blit_y = 1 << (height - 1) */
223 /* if 0, will be set to 0xffffffff (all)*/
224 /* access methods */
225 void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
226 void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
227 };
228
229 #ifdef CONFIG_FB_DEFERRED_IO
230 struct fb_deferred_io {
231 /* delay between mkwrite and deferred handler */
232 unsigned long delay;
233 struct mutex lock; /* mutex that protects the page list */
234 struct list_head pagelist; /* list of touched pages */
235 /* callback */
236 void (*first_io)(struct fb_info *info);
237 void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
238 };
239 #endif
240
241 /*
242 * Frame buffer operations
243 *
244 * LOCKING NOTE: those functions must _ALL_ be called with the console
245 * semaphore held, this is the only suitable locking mechanism we have
246 * in 2.6. Some may be called at interrupt time at this point though.
247 *
248 * The exception to this is the debug related hooks. Putting the fb
249 * into a debug state (e.g. flipping to the kernel console) and restoring
250 * it must be done in a lock-free manner, so low level drivers should
251 * keep track of the initial console (if applicable) and may need to
252 * perform direct, unlocked hardware writes in these hooks.
253 */
254
255 struct fb_ops {
256 /* open/release and usage marking */
257 struct module *owner;
258 int (*fb_open)(struct fb_info *info, int user);
259 int (*fb_release)(struct fb_info *info, int user);
260
261 /* For framebuffers with strange non linear layouts or that do not
262 * work with normal memory mapped access
263 */
264 ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
265 size_t count, loff_t *ppos);
266 ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
267 size_t count, loff_t *ppos);
268
269 /* checks var and eventually tweaks it to something supported,
270 * DO NOT MODIFY PAR */
271 int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
272
273 /* set the video mode according to info->var */
274 int (*fb_set_par)(struct fb_info *info);
275
276 /* set color register */
277 int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
278 unsigned blue, unsigned transp, struct fb_info *info);
279
280 /* set color registers in batch */
281 int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
282
283 /* blank display */
284 int (*fb_blank)(int blank, struct fb_info *info);
285
286 /* pan display */
287 int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
288
289 /* Draws a rectangle */
290 void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
291 /* Copy data from area to another */
292 void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
293 /* Draws a image to the display */
294 void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
295
296 /* Draws cursor */
297 int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
298
299 /* wait for blit idle, optional */
300 int (*fb_sync)(struct fb_info *info);
301
302 /* perform fb specific ioctl (optional) */
303 int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
304 unsigned long arg);
305
306 /* Handle 32bit compat ioctl (optional) */
307 int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
308 unsigned long arg);
309
310 /* perform fb specific mmap */
311 int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
312
313 /* get capability given var */
314 void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
315 struct fb_var_screeninfo *var);
316
317 /* teardown any resources to do with this framebuffer */
318 void (*fb_destroy)(struct fb_info *info);
319
320 /* called at KDB enter and leave time to prepare the console */
321 int (*fb_debug_enter)(struct fb_info *info);
322 int (*fb_debug_leave)(struct fb_info *info);
323 };
324
325 #ifdef CONFIG_FB_TILEBLITTING
326 #define FB_TILE_CURSOR_NONE 0
327 #define FB_TILE_CURSOR_UNDERLINE 1
328 #define FB_TILE_CURSOR_LOWER_THIRD 2
329 #define FB_TILE_CURSOR_LOWER_HALF 3
330 #define FB_TILE_CURSOR_TWO_THIRDS 4
331 #define FB_TILE_CURSOR_BLOCK 5
332
333 struct fb_tilemap {
334 __u32 width; /* width of each tile in pixels */
335 __u32 height; /* height of each tile in scanlines */
336 __u32 depth; /* color depth of each tile */
337 __u32 length; /* number of tiles in the map */
338 const __u8 *data; /* actual tile map: a bitmap array, packed
339 to the nearest byte */
340 };
341
342 struct fb_tilerect {
343 __u32 sx; /* origin in the x-axis */
344 __u32 sy; /* origin in the y-axis */
345 __u32 width; /* number of tiles in the x-axis */
346 __u32 height; /* number of tiles in the y-axis */
347 __u32 index; /* what tile to use: index to tile map */
348 __u32 fg; /* foreground color */
349 __u32 bg; /* background color */
350 __u32 rop; /* raster operation */
351 };
352
353 struct fb_tilearea {
354 __u32 sx; /* source origin in the x-axis */
355 __u32 sy; /* source origin in the y-axis */
356 __u32 dx; /* destination origin in the x-axis */
357 __u32 dy; /* destination origin in the y-axis */
358 __u32 width; /* number of tiles in the x-axis */
359 __u32 height; /* number of tiles in the y-axis */
360 };
361
362 struct fb_tileblit {
363 __u32 sx; /* origin in the x-axis */
364 __u32 sy; /* origin in the y-axis */
365 __u32 width; /* number of tiles in the x-axis */
366 __u32 height; /* number of tiles in the y-axis */
367 __u32 fg; /* foreground color */
368 __u32 bg; /* background color */
369 __u32 length; /* number of tiles to draw */
370 __u32 *indices; /* array of indices to tile map */
371 };
372
373 struct fb_tilecursor {
374 __u32 sx; /* cursor position in the x-axis */
375 __u32 sy; /* cursor position in the y-axis */
376 __u32 mode; /* 0 = erase, 1 = draw */
377 __u32 shape; /* see FB_TILE_CURSOR_* */
378 __u32 fg; /* foreground color */
379 __u32 bg; /* background color */
380 };
381
382 struct fb_tile_ops {
383 /* set tile characteristics */
384 void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
385
386 /* all dimensions from hereon are in terms of tiles */
387
388 /* move a rectangular region of tiles from one area to another*/
389 void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
390 /* fill a rectangular region with a tile */
391 void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
392 /* copy an array of tiles */
393 void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
394 /* cursor */
395 void (*fb_tilecursor)(struct fb_info *info,
396 struct fb_tilecursor *cursor);
397 /* get maximum length of the tile map */
398 int (*fb_get_tilemax)(struct fb_info *info);
399 };
400 #endif /* CONFIG_FB_TILEBLITTING */
401
402 /* FBINFO_* = fb_info.flags bit flags */
403 #define FBINFO_MODULE 0x0001 /* Low-level driver is a module */
404 #define FBINFO_HWACCEL_DISABLED 0x0002
405 /* When FBINFO_HWACCEL_DISABLED is set:
406 * Hardware acceleration is turned off. Software implementations
407 * of required functions (copyarea(), fillrect(), and imageblit())
408 * takes over; acceleration engine should be in a quiescent state */
409
410 /* hints */
411 #define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */
412 #define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */
413 #define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */
414
415 /* hardware supported ops */
416 /* semantics: when a bit is set, it indicates that the operation is
417 * accelerated by hardware.
418 * required functions will still work even if the bit is not set.
419 * optional functions may not even exist if the flag bit is not set.
420 */
421 #define FBINFO_HWACCEL_NONE 0x0000
422 #define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */
423 #define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */
424 #define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */
425 #define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */
426 #define FBINFO_HWACCEL_XPAN 0x1000 /* optional */
427 #define FBINFO_HWACCEL_YPAN 0x2000 /* optional */
428 #define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */
429
430 #define FBINFO_MISC_USEREVENT 0x10000 /* event request
431 from userspace */
432 #define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */
433
434 /* A driver may set this flag to indicate that it does want a set_par to be
435 * called every time when fbcon_switch is executed. The advantage is that with
436 * this flag set you can really be sure that set_par is always called before
437 * any of the functions dependent on the correct hardware state or altering
438 * that state, even if you are using some broken X releases. The disadvantage
439 * is that it introduces unwanted delays to every console switch if set_par
440 * is slow. It is a good idea to try this flag in the drivers initialization
441 * code whenever there is a bug report related to switching between X and the
442 * framebuffer console.
443 */
444 #define FBINFO_MISC_ALWAYS_SETPAR 0x40000
445
446 /* where the fb is a firmware driver, and can be replaced with a proper one */
447 #define FBINFO_MISC_FIRMWARE 0x80000
448 /*
449 * Host and GPU endianness differ.
450 */
451 #define FBINFO_FOREIGN_ENDIAN 0x100000
452 /*
453 * Big endian math. This is the same flags as above, but with different
454 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
455 * and host endianness. Drivers should not use this flag.
456 */
457 #define FBINFO_BE_MATH 0x100000
458
459 /* report to the VT layer that this fb driver can accept forced console
460 output like oopses */
461 #define FBINFO_CAN_FORCE_OUTPUT 0x200000
462
463 struct fb_info {
464 atomic_t count;
465 int node;
466 int flags;
467 struct mutex lock; /* Lock for open/release/ioctl funcs */
468 struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */
469 struct fb_var_screeninfo var; /* Current var */
470 struct fb_fix_screeninfo fix; /* Current fix */
471 struct fb_monspecs monspecs; /* Current Monitor specs */
472 struct work_struct queue; /* Framebuffer event queue */
473 struct fb_pixmap pixmap; /* Image hardware mapper */
474 struct fb_pixmap sprite; /* Cursor hardware mapper */
475 struct fb_cmap cmap; /* Current cmap */
476 struct list_head modelist; /* mode list */
477 struct fb_videomode *mode; /* current mode */
478
479 #ifdef CONFIG_FB_BACKLIGHT
480 /* assigned backlight device */
481 /* set before framebuffer registration,
482 remove after unregister */
483 struct backlight_device *bl_dev;
484
485 /* Backlight level curve */
486 struct mutex bl_curve_mutex;
487 u8 bl_curve[FB_BACKLIGHT_LEVELS];
488 #endif
489 #ifdef CONFIG_FB_DEFERRED_IO
490 struct delayed_work deferred_work;
491 struct fb_deferred_io *fbdefio;
492 #endif
493
494 struct fb_ops *fbops;
495 struct device *device; /* This is the parent */
496 struct device *dev; /* This is this fb device */
497 int class_flag; /* private sysfs flags */
498 #ifdef CONFIG_FB_TILEBLITTING
499 struct fb_tile_ops *tileops; /* Tile Blitting */
500 #endif
501 union {
502 char __iomem *screen_base; /* Virtual address */
503 char *screen_buffer;
504 };
505 unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */
506 void *pseudo_palette; /* Fake palette of 16 colors */
507 #define FBINFO_STATE_RUNNING 0
508 #define FBINFO_STATE_SUSPENDED 1
509 u32 state; /* Hardware state i.e suspend */
510 void *fbcon_par; /* fbcon use-only private area */
511 /* From here on everything is device dependent */
512 void *par;
513 /* we need the PCI or similar aperture base/size not
514 smem_start/size as smem_start may just be an object
515 allocated inside the aperture so may not actually overlap */
516 struct apertures_struct {
517 unsigned int count;
518 struct aperture {
519 resource_size_t base;
520 resource_size_t size;
521 } ranges[0];
522 } *apertures;
523
524 bool skip_vt_switch; /* no VT switch on suspend/resume required */
525 };
526
527 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
528 struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
529 + max_num * sizeof(struct aperture), GFP_KERNEL);
530 if (!a)
531 return NULL;
532 a->count = max_num;
533 return a;
534 }
535
536 #ifdef MODULE
537 #define FBINFO_DEFAULT FBINFO_MODULE
538 #else
539 #define FBINFO_DEFAULT 0
540 #endif
541
542 // This will go away
543 #define FBINFO_FLAG_MODULE FBINFO_MODULE
544 #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT
545
546 /* This will go away
547 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
548 * when it wants to turn the acceleration engine on. This is
549 * really a separate operation, and should be modified via sysfs.
550 * But for now, we leave it broken with the following define
551 */
552 #define STUPID_ACCELF_TEXT_SHIT
553
554 // This will go away
555 #if defined(__sparc__)
556
557 /* We map all of our framebuffers such that big-endian accesses
558 * are what we want, so the following is sufficient.
559 */
560
561 // This will go away
562 #define fb_readb sbus_readb
563 #define fb_readw sbus_readw
564 #define fb_readl sbus_readl
565 #define fb_readq sbus_readq
566 #define fb_writeb sbus_writeb
567 #define fb_writew sbus_writew
568 #define fb_writel sbus_writel
569 #define fb_writeq sbus_writeq
570 #define fb_memset sbus_memset_io
571 #define fb_memcpy_fromfb sbus_memcpy_fromio
572 #define fb_memcpy_tofb sbus_memcpy_toio
573
574 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
575
576 #define fb_readb __raw_readb
577 #define fb_readw __raw_readw
578 #define fb_readl __raw_readl
579 #define fb_readq __raw_readq
580 #define fb_writeb __raw_writeb
581 #define fb_writew __raw_writew
582 #define fb_writel __raw_writel
583 #define fb_writeq __raw_writeq
584 #define fb_memset memset_io
585 #define fb_memcpy_fromfb memcpy_fromio
586 #define fb_memcpy_tofb memcpy_toio
587
588 #else
589
590 #define fb_readb(addr) (*(volatile u8 *) (addr))
591 #define fb_readw(addr) (*(volatile u16 *) (addr))
592 #define fb_readl(addr) (*(volatile u32 *) (addr))
593 #define fb_readq(addr) (*(volatile u64 *) (addr))
594 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
595 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
596 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
597 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
598 #define fb_memset memset
599 #define fb_memcpy_fromfb memcpy
600 #define fb_memcpy_tofb memcpy
601
602 #endif
603
604 #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0)
605 #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \
606 (val) << (bits))
607 #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \
608 (val) >> (bits))
609
610 /*
611 * `Generic' versions of the frame buffer device operations
612 */
613
614 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
615 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
616 extern int fb_blank(struct fb_info *info, int blank);
617 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
618 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
619 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
620 /*
621 * Drawing operations where framebuffer is in system RAM
622 */
623 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
624 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
625 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
626 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
627 size_t count, loff_t *ppos);
628 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
629 size_t count, loff_t *ppos);
630
631 /* drivers/video/fbmem.c */
632 extern int register_framebuffer(struct fb_info *fb_info);
633 extern int unregister_framebuffer(struct fb_info *fb_info);
634 extern int unlink_framebuffer(struct fb_info *fb_info);
635 extern int remove_conflicting_framebuffers(struct apertures_struct *a,
636 const char *name, bool primary);
637 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
638 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
639 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
640 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
641 u32 height, u32 shift_high, u32 shift_low, u32 mod);
642 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
643 extern void fb_set_suspend(struct fb_info *info, int state);
644 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
645 struct fb_fix_screeninfo *fix);
646 extern int fb_get_options(const char *name, char **option);
647 extern int fb_new_modelist(struct fb_info *info);
648
649 extern struct fb_info *registered_fb[FB_MAX];
650 extern int num_registered_fb;
651 extern struct class *fb_class;
652
653 extern int lock_fb_info(struct fb_info *info);
654
655 static inline void unlock_fb_info(struct fb_info *info)
656 {
657 mutex_unlock(&info->lock);
658 }
659
660 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
661 u8 *src, u32 s_pitch, u32 height)
662 {
663 u32 i, j;
664
665 d_pitch -= s_pitch;
666
667 for (i = height; i--; ) {
668 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
669 for (j = 0; j < s_pitch; j++)
670 *dst++ = *src++;
671 dst += d_pitch;
672 }
673 }
674
675 /* drivers/video/fb_defio.c */
676 int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma);
677 extern void fb_deferred_io_init(struct fb_info *info);
678 extern void fb_deferred_io_open(struct fb_info *info,
679 struct inode *inode,
680 struct file *file);
681 extern void fb_deferred_io_cleanup(struct fb_info *info);
682 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
683 loff_t end, int datasync);
684
685 static inline bool fb_be_math(struct fb_info *info)
686 {
687 #ifdef CONFIG_FB_FOREIGN_ENDIAN
688 #if defined(CONFIG_FB_BOTH_ENDIAN)
689 return info->flags & FBINFO_BE_MATH;
690 #elif defined(CONFIG_FB_BIG_ENDIAN)
691 return true;
692 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
693 return false;
694 #endif /* CONFIG_FB_BOTH_ENDIAN */
695 #else
696 #ifdef __BIG_ENDIAN
697 return true;
698 #else
699 return false;
700 #endif /* __BIG_ENDIAN */
701 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
702 }
703
704 /* drivers/video/fbsysfs.c */
705 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
706 extern void framebuffer_release(struct fb_info *info);
707 extern int fb_init_device(struct fb_info *fb_info);
708 extern void fb_cleanup_device(struct fb_info *head);
709 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
710
711 /* drivers/video/fbmon.c */
712 #define FB_MAXTIMINGS 0
713 #define FB_VSYNCTIMINGS 1
714 #define FB_HSYNCTIMINGS 2
715 #define FB_DCLKTIMINGS 3
716 #define FB_IGNOREMON 0x100
717
718 #define FB_MODE_IS_UNKNOWN 0
719 #define FB_MODE_IS_DETAILED 1
720 #define FB_MODE_IS_STANDARD 2
721 #define FB_MODE_IS_VESA 4
722 #define FB_MODE_IS_CALCULATED 8
723 #define FB_MODE_IS_FIRST 16
724 #define FB_MODE_IS_FROM_VAR 32
725
726 extern int fbmon_dpms(const struct fb_info *fb_info);
727 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
728 struct fb_info *info);
729 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
730 struct fb_info *info);
731 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
732 extern const unsigned char *fb_firmware_edid(struct device *device);
733 extern void fb_edid_to_monspecs(unsigned char *edid,
734 struct fb_monspecs *specs);
735 extern void fb_edid_add_monspecs(unsigned char *edid,
736 struct fb_monspecs *specs);
737 extern void fb_destroy_modedb(struct fb_videomode *modedb);
738 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
739 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
740
741 extern int of_get_fb_videomode(struct device_node *np,
742 struct fb_videomode *fb,
743 int index);
744 extern int fb_videomode_from_videomode(const struct videomode *vm,
745 struct fb_videomode *fbmode);
746
747 /* drivers/video/modedb.c */
748 #define VESA_MODEDB_SIZE 43
749 #define DMT_SIZE 0x50
750
751 extern void fb_var_to_videomode(struct fb_videomode *mode,
752 const struct fb_var_screeninfo *var);
753 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
754 const struct fb_videomode *mode);
755 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
756 const struct fb_videomode *mode2);
757 extern int fb_add_videomode(const struct fb_videomode *mode,
758 struct list_head *head);
759 extern void fb_delete_videomode(const struct fb_videomode *mode,
760 struct list_head *head);
761 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
762 struct list_head *head);
763 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
764 struct list_head *head);
765 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
766 struct list_head *head);
767 extern void fb_destroy_modelist(struct list_head *head);
768 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
769 struct list_head *head);
770 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
771 struct list_head *head);
772
773 /* drivers/video/fbcmap.c */
774 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
775 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
776 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
777 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
778 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
779 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
780 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
781 extern const struct fb_cmap *fb_default_cmap(int len);
782 extern void fb_invert_cmaps(void);
783
784 struct fb_videomode {
785 const char *name; /* optional */
786 u32 refresh; /* optional */
787 u32 xres;
788 u32 yres;
789 u32 pixclock;
790 u32 left_margin;
791 u32 right_margin;
792 u32 upper_margin;
793 u32 lower_margin;
794 u32 hsync_len;
795 u32 vsync_len;
796 u32 sync;
797 u32 vmode;
798 u32 flag;
799 };
800
801 struct dmt_videomode {
802 u32 dmt_id;
803 u32 std_2byte_code;
804 u32 cvt_3byte_code;
805 const struct fb_videomode *mode;
806 };
807
808 extern const char *fb_mode_option;
809 extern const struct fb_videomode vesa_modes[];
810 extern const struct fb_videomode cea_modes[65];
811 extern const struct dmt_videomode dmt_modes[];
812
813 struct fb_modelist {
814 struct list_head list;
815 struct fb_videomode mode;
816 };
817
818 extern int fb_find_mode(struct fb_var_screeninfo *var,
819 struct fb_info *info, const char *mode_option,
820 const struct fb_videomode *db,
821 unsigned int dbsize,
822 const struct fb_videomode *default_mode,
823 unsigned int default_bpp);
824
825 /* Convenience logging macros */
826 #define fb_err(fb_info, fmt, ...) \
827 pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
828 #define fb_notice(info, fmt, ...) \
829 pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
830 #define fb_warn(fb_info, fmt, ...) \
831 pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
832 #define fb_info(fb_info, fmt, ...) \
833 pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
834 #define fb_dbg(fb_info, fmt, ...) \
835 pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
836
837 #endif /* _LINUX_FB_H */