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 */
50#define FB_MISC_HDMI 4
51struct 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
62struct 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
92struct 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
101struct 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
113struct 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
166struct fb_event {
167 struct fb_info *info;
168 void *data;
169};
170
171struct fb_blit_caps {
172 u32 x;
173 u32 y;
174 u32 len;
175 u32 flags;
176};
177
178extern int fb_register_client(struct notifier_block *nb);
179extern int fb_unregister_client(struct notifier_block *nb);
180extern int fb_notifier_call_chain(unsigned long val, void *v);
181/*
182 * Pixmap structure definition
183 *
184 * The purpose of this structure is to translate data
185 * from the hardware independent format of fbdev to what
186 * format the hardware needs.
187 */
188
189#define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */
190#define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */
191#define FB_PIXMAP_IO 4 /* memory is iomapped */
192#define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */
193
194struct fb_pixmap {
195 u8 *addr; /* pointer to memory */
196 u32 size; /* size of buffer in bytes */
197 u32 offset; /* current offset to buffer */
198 u32 buf_align; /* byte alignment of each bitmap */
199 u32 scan_align; /* alignment per scanline */
200 u32 access_align; /* alignment per read/write (bits) */
201 u32 flags; /* see FB_PIXMAP_* */
202 u32 blit_x; /* supported bit block dimensions (1-32)*/
203 u32 blit_y; /* Format: blit_x = 1 << (width - 1) */
204 /* blit_y = 1 << (height - 1) */
205 /* if 0, will be set to 0xffffffff (all)*/
206 /* access methods */
207 void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
208 void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
209};
210
211#ifdef CONFIG_FB_DEFERRED_IO
212struct fb_deferred_io {
213 /* delay between mkwrite and deferred handler */
214 unsigned long delay;
215 struct mutex lock; /* mutex that protects the page list */
216 struct list_head pagelist; /* list of touched pages */
217 /* callback */
218 void (*first_io)(struct fb_info *info);
219 void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
220};
221#endif
222
223/*
224 * Frame buffer operations
225 *
226 * LOCKING NOTE: those functions must _ALL_ be called with the console
227 * semaphore held, this is the only suitable locking mechanism we have
228 * in 2.6. Some may be called at interrupt time at this point though.
229 *
230 * The exception to this is the debug related hooks. Putting the fb
231 * into a debug state (e.g. flipping to the kernel console) and restoring
232 * it must be done in a lock-free manner, so low level drivers should
233 * keep track of the initial console (if applicable) and may need to
234 * perform direct, unlocked hardware writes in these hooks.
235 */
236
237struct fb_ops {
238 /* open/release and usage marking */
239 struct module *owner;
240 int (*fb_open)(struct fb_info *info, int user);
241 int (*fb_release)(struct fb_info *info, int user);
242
243 /* For framebuffers with strange non linear layouts or that do not
244 * work with normal memory mapped access
245 */
246 ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
247 size_t count, loff_t *ppos);
248 ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
249 size_t count, loff_t *ppos);
250
251 /* checks var and eventually tweaks it to something supported,
252 * DO NOT MODIFY PAR */
253 int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
254
255 /* set the video mode according to info->var */
256 int (*fb_set_par)(struct fb_info *info);
257
258 /* set color register */
259 int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
260 unsigned blue, unsigned transp, struct fb_info *info);
261
262 /* set color registers in batch */
263 int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
264
265 /* blank display */
266 int (*fb_blank)(int blank, struct fb_info *info);
267
268 /* pan display */
269 int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
270
271 /* Draws a rectangle */
272 void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
273 /* Copy data from area to another */
274 void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
275 /* Draws a image to the display */
276 void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
277
278 /* Draws cursor */
279 int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
280
281 /* Rotates the display */
282 void (*fb_rotate)(struct fb_info *info, int angle);
283
284 /* wait for blit idle, optional */
285 int (*fb_sync)(struct fb_info *info);
286
287 /* perform fb specific ioctl (optional) */
288 int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
289 unsigned long arg);
290
291 /* Handle 32bit compat ioctl (optional) */
292 int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
293 unsigned long arg);
294
295 /* perform fb specific mmap */
296 int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
297
298 /* get capability given var */
299 void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
300 struct fb_var_screeninfo *var);
301
302 /* teardown any resources to do with this framebuffer */
303 void (*fb_destroy)(struct fb_info *info);
304
305 /* called at KDB enter and leave time to prepare the console */
306 int (*fb_debug_enter)(struct fb_info *info);
307 int (*fb_debug_leave)(struct fb_info *info);
308};
309
310#ifdef CONFIG_FB_TILEBLITTING
311#define FB_TILE_CURSOR_NONE 0
312#define FB_TILE_CURSOR_UNDERLINE 1
313#define FB_TILE_CURSOR_LOWER_THIRD 2
314#define FB_TILE_CURSOR_LOWER_HALF 3
315#define FB_TILE_CURSOR_TWO_THIRDS 4
316#define FB_TILE_CURSOR_BLOCK 5
317
318struct fb_tilemap {
319 __u32 width; /* width of each tile in pixels */
320 __u32 height; /* height of each tile in scanlines */
321 __u32 depth; /* color depth of each tile */
322 __u32 length; /* number of tiles in the map */
323 const __u8 *data; /* actual tile map: a bitmap array, packed
324 to the nearest byte */
325};
326
327struct fb_tilerect {
328 __u32 sx; /* origin in the x-axis */
329 __u32 sy; /* origin in the y-axis */
330 __u32 width; /* number of tiles in the x-axis */
331 __u32 height; /* number of tiles in the y-axis */
332 __u32 index; /* what tile to use: index to tile map */
333 __u32 fg; /* foreground color */
334 __u32 bg; /* background color */
335 __u32 rop; /* raster operation */
336};
337
338struct fb_tilearea {
339 __u32 sx; /* source origin in the x-axis */
340 __u32 sy; /* source origin in the y-axis */
341 __u32 dx; /* destination origin in the x-axis */
342 __u32 dy; /* destination origin in the y-axis */
343 __u32 width; /* number of tiles in the x-axis */
344 __u32 height; /* number of tiles in the y-axis */
345};
346
347struct fb_tileblit {
348 __u32 sx; /* origin in the x-axis */
349 __u32 sy; /* origin in the y-axis */
350 __u32 width; /* number of tiles in the x-axis */
351 __u32 height; /* number of tiles in the y-axis */
352 __u32 fg; /* foreground color */
353 __u32 bg; /* background color */
354 __u32 length; /* number of tiles to draw */
355 __u32 *indices; /* array of indices to tile map */
356};
357
358struct fb_tilecursor {
359 __u32 sx; /* cursor position in the x-axis */
360 __u32 sy; /* cursor position in the y-axis */
361 __u32 mode; /* 0 = erase, 1 = draw */
362 __u32 shape; /* see FB_TILE_CURSOR_* */
363 __u32 fg; /* foreground color */
364 __u32 bg; /* background color */
365};
366
367struct fb_tile_ops {
368 /* set tile characteristics */
369 void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
370
371 /* all dimensions from hereon are in terms of tiles */
372
373 /* move a rectangular region of tiles from one area to another*/
374 void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
375 /* fill a rectangular region with a tile */
376 void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
377 /* copy an array of tiles */
378 void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
379 /* cursor */
380 void (*fb_tilecursor)(struct fb_info *info,
381 struct fb_tilecursor *cursor);
382 /* get maximum length of the tile map */
383 int (*fb_get_tilemax)(struct fb_info *info);
384};
385#endif /* CONFIG_FB_TILEBLITTING */
386
387/* FBINFO_* = fb_info.flags bit flags */
388#define FBINFO_MODULE 0x0001 /* Low-level driver is a module */
389#define FBINFO_HWACCEL_DISABLED 0x0002
390 /* When FBINFO_HWACCEL_DISABLED is set:
391 * Hardware acceleration is turned off. Software implementations
392 * of required functions (copyarea(), fillrect(), and imageblit())
393 * takes over; acceleration engine should be in a quiescent state */
394
395/* hints */
396#define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */
397#define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */
398#define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */
399
400/* hardware supported ops */
401/* semantics: when a bit is set, it indicates that the operation is
402 * accelerated by hardware.
403 * required functions will still work even if the bit is not set.
404 * optional functions may not even exist if the flag bit is not set.
405 */
406#define FBINFO_HWACCEL_NONE 0x0000
407#define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */
408#define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */
409#define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */
410#define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */
411#define FBINFO_HWACCEL_XPAN 0x1000 /* optional */
412#define FBINFO_HWACCEL_YPAN 0x2000 /* optional */
413#define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */
414
415#define FBINFO_MISC_USEREVENT 0x10000 /* event request
416 from userspace */
417#define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */
418
419/* A driver may set this flag to indicate that it does want a set_par to be
420 * called every time when fbcon_switch is executed. The advantage is that with
421 * this flag set you can really be sure that set_par is always called before
422 * any of the functions dependent on the correct hardware state or altering
423 * that state, even if you are using some broken X releases. The disadvantage
424 * is that it introduces unwanted delays to every console switch if set_par
425 * is slow. It is a good idea to try this flag in the drivers initialization
426 * code whenever there is a bug report related to switching between X and the
427 * framebuffer console.
428 */
429#define FBINFO_MISC_ALWAYS_SETPAR 0x40000
430
431/* where the fb is a firmware driver, and can be replaced with a proper one */
432#define FBINFO_MISC_FIRMWARE 0x80000
433/*
434 * Host and GPU endianness differ.
435 */
436#define FBINFO_FOREIGN_ENDIAN 0x100000
437/*
438 * Big endian math. This is the same flags as above, but with different
439 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
440 * and host endianness. Drivers should not use this flag.
441 */
442#define FBINFO_BE_MATH 0x100000
443
444/* report to the VT layer that this fb driver can accept forced console
445 output like oopses */
446#define FBINFO_CAN_FORCE_OUTPUT 0x200000
447
448struct fb_info {
449 atomic_t count;
450 int node;
451 int flags;
452 struct mutex lock; /* Lock for open/release/ioctl funcs */
453 struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */
454 struct fb_var_screeninfo var; /* Current var */
455 struct fb_fix_screeninfo fix; /* Current fix */
456 struct fb_monspecs monspecs; /* Current Monitor specs */
457 struct work_struct queue; /* Framebuffer event queue */
458 struct fb_pixmap pixmap; /* Image hardware mapper */
459 struct fb_pixmap sprite; /* Cursor hardware mapper */
460 struct fb_cmap cmap; /* Current cmap */
461 struct list_head modelist; /* mode list */
462 struct fb_videomode *mode; /* current mode */
463
464#ifdef CONFIG_FB_BACKLIGHT
465 /* assigned backlight device */
466 /* set before framebuffer registration,
467 remove after unregister */
468 struct backlight_device *bl_dev;
469
470 /* Backlight level curve */
471 struct mutex bl_curve_mutex;
472 u8 bl_curve[FB_BACKLIGHT_LEVELS];
473#endif
474#ifdef CONFIG_FB_DEFERRED_IO
475 struct delayed_work deferred_work;
476 struct fb_deferred_io *fbdefio;
477#endif
478
479 struct fb_ops *fbops;
480 struct device *device; /* This is the parent */
481 struct device *dev; /* This is this fb device */
482 int class_flag; /* private sysfs flags */
483#ifdef CONFIG_FB_TILEBLITTING
484 struct fb_tile_ops *tileops; /* Tile Blitting */
485#endif
486 union {
487 char __iomem *screen_base; /* Virtual address */
488 char *screen_buffer;
489 };
490 unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */
491 void *pseudo_palette; /* Fake palette of 16 colors */
492#define FBINFO_STATE_RUNNING 0
493#define FBINFO_STATE_SUSPENDED 1
494 u32 state; /* Hardware state i.e suspend */
495 void *fbcon_par; /* fbcon use-only private area */
496 /* From here on everything is device dependent */
497 void *par;
498 /* we need the PCI or similar aperture base/size not
499 smem_start/size as smem_start may just be an object
500 allocated inside the aperture so may not actually overlap */
501 struct apertures_struct {
502 unsigned int count;
503 struct aperture {
504 resource_size_t base;
505 resource_size_t size;
506 } ranges[0];
507 } *apertures;
508
509 bool skip_vt_switch; /* no VT switch on suspend/resume required */
510};
511
512static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
513 struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
514 + max_num * sizeof(struct aperture), GFP_KERNEL);
515 if (!a)
516 return NULL;
517 a->count = max_num;
518 return a;
519}
520
521#ifdef MODULE
522#define FBINFO_DEFAULT FBINFO_MODULE
523#else
524#define FBINFO_DEFAULT 0
525#endif
526
527// This will go away
528#define FBINFO_FLAG_MODULE FBINFO_MODULE
529#define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT
530
531/* This will go away
532 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
533 * when it wants to turn the acceleration engine on. This is
534 * really a separate operation, and should be modified via sysfs.
535 * But for now, we leave it broken with the following define
536 */
537#define STUPID_ACCELF_TEXT_SHIT
538
539// This will go away
540#if defined(__sparc__)
541
542/* We map all of our framebuffers such that big-endian accesses
543 * are what we want, so the following is sufficient.
544 */
545
546// This will go away
547#define fb_readb sbus_readb
548#define fb_readw sbus_readw
549#define fb_readl sbus_readl
550#define fb_readq sbus_readq
551#define fb_writeb sbus_writeb
552#define fb_writew sbus_writew
553#define fb_writel sbus_writel
554#define fb_writeq sbus_writeq
555#define fb_memset sbus_memset_io
556#define fb_memcpy_fromfb sbus_memcpy_fromio
557#define fb_memcpy_tofb sbus_memcpy_toio
558
559#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
560
561#define fb_readb __raw_readb
562#define fb_readw __raw_readw
563#define fb_readl __raw_readl
564#define fb_readq __raw_readq
565#define fb_writeb __raw_writeb
566#define fb_writew __raw_writew
567#define fb_writel __raw_writel
568#define fb_writeq __raw_writeq
569#define fb_memset memset_io
570#define fb_memcpy_fromfb memcpy_fromio
571#define fb_memcpy_tofb memcpy_toio
572
573#else
574
575#define fb_readb(addr) (*(volatile u8 *) (addr))
576#define fb_readw(addr) (*(volatile u16 *) (addr))
577#define fb_readl(addr) (*(volatile u32 *) (addr))
578#define fb_readq(addr) (*(volatile u64 *) (addr))
579#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
580#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
581#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
582#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
583#define fb_memset memset
584#define fb_memcpy_fromfb memcpy
585#define fb_memcpy_tofb memcpy
586
587#endif
588
589#define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0)
590#define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \
591 (val) << (bits))
592#define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \
593 (val) >> (bits))
594
595 /*
596 * `Generic' versions of the frame buffer device operations
597 */
598
599extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
600extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
601extern int fb_blank(struct fb_info *info, int blank);
602extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
603extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
604extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
605/*
606 * Drawing operations where framebuffer is in system RAM
607 */
608extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
609extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
610extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
611extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
612 size_t count, loff_t *ppos);
613extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
614 size_t count, loff_t *ppos);
615
616/* drivers/video/fbmem.c */
617extern int register_framebuffer(struct fb_info *fb_info);
618extern int unregister_framebuffer(struct fb_info *fb_info);
619extern int unlink_framebuffer(struct fb_info *fb_info);
620extern int remove_conflicting_framebuffers(struct apertures_struct *a,
621 const char *name, bool primary);
622extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
623extern int fb_show_logo(struct fb_info *fb_info, int rotate);
624extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
625extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
626 u32 height, u32 shift_high, u32 shift_low, u32 mod);
627extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
628extern void fb_set_suspend(struct fb_info *info, int state);
629extern int fb_get_color_depth(struct fb_var_screeninfo *var,
630 struct fb_fix_screeninfo *fix);
631extern int fb_get_options(const char *name, char **option);
632extern int fb_new_modelist(struct fb_info *info);
633
634extern struct fb_info *registered_fb[FB_MAX];
635extern int num_registered_fb;
636extern struct class *fb_class;
637
638extern int lock_fb_info(struct fb_info *info);
639
640static inline void unlock_fb_info(struct fb_info *info)
641{
642 mutex_unlock(&info->lock);
643}
644
645static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
646 u8 *src, u32 s_pitch, u32 height)
647{
648 u32 i, j;
649
650 d_pitch -= s_pitch;
651
652 for (i = height; i--; ) {
653 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
654 for (j = 0; j < s_pitch; j++)
655 *dst++ = *src++;
656 dst += d_pitch;
657 }
658}
659
660/* drivers/video/fb_defio.c */
661extern void fb_deferred_io_init(struct fb_info *info);
662extern void fb_deferred_io_open(struct fb_info *info,
663 struct inode *inode,
664 struct file *file);
665extern void fb_deferred_io_cleanup(struct fb_info *info);
666extern int fb_deferred_io_fsync(struct file *file, loff_t start,
667 loff_t end, int datasync);
668
669static inline bool fb_be_math(struct fb_info *info)
670{
671#ifdef CONFIG_FB_FOREIGN_ENDIAN
672#if defined(CONFIG_FB_BOTH_ENDIAN)
673 return info->flags & FBINFO_BE_MATH;
674#elif defined(CONFIG_FB_BIG_ENDIAN)
675 return true;
676#elif defined(CONFIG_FB_LITTLE_ENDIAN)
677 return false;
678#endif /* CONFIG_FB_BOTH_ENDIAN */
679#else
680#ifdef __BIG_ENDIAN
681 return true;
682#else
683 return false;
684#endif /* __BIG_ENDIAN */
685#endif /* CONFIG_FB_FOREIGN_ENDIAN */
686}
687
688/* drivers/video/fbsysfs.c */
689extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
690extern void framebuffer_release(struct fb_info *info);
691extern int fb_init_device(struct fb_info *fb_info);
692extern void fb_cleanup_device(struct fb_info *head);
693extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
694
695/* drivers/video/fbmon.c */
696#define FB_MAXTIMINGS 0
697#define FB_VSYNCTIMINGS 1
698#define FB_HSYNCTIMINGS 2
699#define FB_DCLKTIMINGS 3
700#define FB_IGNOREMON 0x100
701
702#define FB_MODE_IS_UNKNOWN 0
703#define FB_MODE_IS_DETAILED 1
704#define FB_MODE_IS_STANDARD 2
705#define FB_MODE_IS_VESA 4
706#define FB_MODE_IS_CALCULATED 8
707#define FB_MODE_IS_FIRST 16
708#define FB_MODE_IS_FROM_VAR 32
709
710extern int fbmon_dpms(const struct fb_info *fb_info);
711extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
712 struct fb_info *info);
713extern int fb_validate_mode(const struct fb_var_screeninfo *var,
714 struct fb_info *info);
715extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
716extern const unsigned char *fb_firmware_edid(struct device *device);
717extern void fb_edid_to_monspecs(unsigned char *edid,
718 struct fb_monspecs *specs);
719extern void fb_edid_add_monspecs(unsigned char *edid,
720 struct fb_monspecs *specs);
721extern void fb_destroy_modedb(struct fb_videomode *modedb);
722extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
723extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
724
725extern int of_get_fb_videomode(struct device_node *np,
726 struct fb_videomode *fb,
727 int index);
728extern int fb_videomode_from_videomode(const struct videomode *vm,
729 struct fb_videomode *fbmode);
730
731/* drivers/video/modedb.c */
732#define VESA_MODEDB_SIZE 43
733#define DMT_SIZE 0x50
734
735extern void fb_var_to_videomode(struct fb_videomode *mode,
736 const struct fb_var_screeninfo *var);
737extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
738 const struct fb_videomode *mode);
739extern int fb_mode_is_equal(const struct fb_videomode *mode1,
740 const struct fb_videomode *mode2);
741extern int fb_add_videomode(const struct fb_videomode *mode,
742 struct list_head *head);
743extern void fb_delete_videomode(const struct fb_videomode *mode,
744 struct list_head *head);
745extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
746 struct list_head *head);
747extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
748 struct list_head *head);
749extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
750 struct list_head *head);
751extern void fb_destroy_modelist(struct list_head *head);
752extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
753 struct list_head *head);
754extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
755 struct list_head *head);
756
757/* drivers/video/fbcmap.c */
758extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
759extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
760extern void fb_dealloc_cmap(struct fb_cmap *cmap);
761extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
762extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
763extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
764extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
765extern const struct fb_cmap *fb_default_cmap(int len);
766extern void fb_invert_cmaps(void);
767
768struct fb_videomode {
769 const char *name; /* optional */
770 u32 refresh; /* optional */
771 u32 xres;
772 u32 yres;
773 u32 pixclock;
774 u32 left_margin;
775 u32 right_margin;
776 u32 upper_margin;
777 u32 lower_margin;
778 u32 hsync_len;
779 u32 vsync_len;
780 u32 sync;
781 u32 vmode;
782 u32 flag;
783};
784
785struct dmt_videomode {
786 u32 dmt_id;
787 u32 std_2byte_code;
788 u32 cvt_3byte_code;
789 const struct fb_videomode *mode;
790};
791
792extern const char *fb_mode_option;
793extern const struct fb_videomode vesa_modes[];
794extern const struct fb_videomode cea_modes[65];
795extern const struct dmt_videomode dmt_modes[];
796
797struct fb_modelist {
798 struct list_head list;
799 struct fb_videomode mode;
800};
801
802extern int fb_find_mode(struct fb_var_screeninfo *var,
803 struct fb_info *info, const char *mode_option,
804 const struct fb_videomode *db,
805 unsigned int dbsize,
806 const struct fb_videomode *default_mode,
807 unsigned int default_bpp);
808
809/* Convenience logging macros */
810#define fb_err(fb_info, fmt, ...) \
811 pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
812#define fb_notice(info, fmt, ...) \
813 pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
814#define fb_warn(fb_info, fmt, ...) \
815 pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
816#define fb_info(fb_info, fmt, ...) \
817 pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
818#define fb_dbg(fb_info, fmt, ...) \
819 pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
820
821#endif /* _LINUX_FB_H */