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