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