Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/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 struct 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 
 61 struct 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 
 91 struct 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 
100 struct 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 
112 struct 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 
165 struct fb_event {
166         struct fb_info *info;
167         void *data;
168 };
169 
170 struct fb_blit_caps {
171         u32 x;
172         u32 y;
173         u32 len;
174         u32 flags;
175 };
176 
177 extern int fb_register_client(struct notifier_block *nb);
178 extern int fb_unregister_client(struct notifier_block *nb);
179 extern 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 
193 struct 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
211 struct 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 
236 struct 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 
317 struct 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 
326 struct 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 
337 struct 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 
346 struct 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 
357 struct 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 
366 struct 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 
447 struct 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         bool skip_vt_switch; /* no VT switch on suspend/resume required */
506 };
507 
508 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
509         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
510                         + max_num * sizeof(struct aperture), GFP_KERNEL);
511         if (!a)
512                 return NULL;
513         a->count = max_num;
514         return a;
515 }
516 
517 #ifdef MODULE
518 #define FBINFO_DEFAULT  FBINFO_MODULE
519 #else
520 #define FBINFO_DEFAULT  0
521 #endif
522 
523 // This will go away
524 #define FBINFO_FLAG_MODULE      FBINFO_MODULE
525 #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
526 
527 /* This will go away
528  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
529  * when it wants to turn the acceleration engine on.  This is
530  * really a separate operation, and should be modified via sysfs.
531  *  But for now, we leave it broken with the following define
532  */
533 #define STUPID_ACCELF_TEXT_SHIT
534 
535 // This will go away
536 #if defined(__sparc__)
537 
538 /* We map all of our framebuffers such that big-endian accesses
539  * are what we want, so the following is sufficient.
540  */
541 
542 // This will go away
543 #define fb_readb sbus_readb
544 #define fb_readw sbus_readw
545 #define fb_readl sbus_readl
546 #define fb_readq sbus_readq
547 #define fb_writeb sbus_writeb
548 #define fb_writew sbus_writew
549 #define fb_writel sbus_writel
550 #define fb_writeq sbus_writeq
551 #define fb_memset sbus_memset_io
552 #define fb_memcpy_fromfb sbus_memcpy_fromio
553 #define fb_memcpy_tofb sbus_memcpy_toio
554 
555 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
556 
557 #define fb_readb __raw_readb
558 #define fb_readw __raw_readw
559 #define fb_readl __raw_readl
560 #define fb_readq __raw_readq
561 #define fb_writeb __raw_writeb
562 #define fb_writew __raw_writew
563 #define fb_writel __raw_writel
564 #define fb_writeq __raw_writeq
565 #define fb_memset memset_io
566 #define fb_memcpy_fromfb memcpy_fromio
567 #define fb_memcpy_tofb memcpy_toio
568 
569 #else
570 
571 #define fb_readb(addr) (*(volatile u8 *) (addr))
572 #define fb_readw(addr) (*(volatile u16 *) (addr))
573 #define fb_readl(addr) (*(volatile u32 *) (addr))
574 #define fb_readq(addr) (*(volatile u64 *) (addr))
575 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
576 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
577 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
578 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
579 #define fb_memset memset
580 #define fb_memcpy_fromfb memcpy
581 #define fb_memcpy_tofb memcpy
582 
583 #endif
584 
585 #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
586 #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
587                                                       (val) << (bits))
588 #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
589                                                       (val) >> (bits))
590 
591     /*
592      *  `Generic' versions of the frame buffer device operations
593      */
594 
595 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
596 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
597 extern int fb_blank(struct fb_info *info, int blank);
598 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
599 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
600 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
601 /*
602  * Drawing operations where framebuffer is in system RAM
603  */
604 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
605 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
606 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
607 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
608                            size_t count, loff_t *ppos);
609 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
610                             size_t count, loff_t *ppos);
611 
612 /* drivers/video/fbmem.c */
613 extern int register_framebuffer(struct fb_info *fb_info);
614 extern int unregister_framebuffer(struct fb_info *fb_info);
615 extern int unlink_framebuffer(struct fb_info *fb_info);
616 extern int remove_conflicting_framebuffers(struct apertures_struct *a,
617                                            const char *name, bool primary);
618 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
619 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
620 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
621 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
622                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
623 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
624 extern void fb_set_suspend(struct fb_info *info, int state);
625 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
626                               struct fb_fix_screeninfo *fix);
627 extern int fb_get_options(const char *name, char **option);
628 extern int fb_new_modelist(struct fb_info *info);
629 
630 extern struct fb_info *registered_fb[FB_MAX];
631 extern int num_registered_fb;
632 extern struct class *fb_class;
633 
634 extern int lock_fb_info(struct fb_info *info);
635 
636 static inline void unlock_fb_info(struct fb_info *info)
637 {
638         mutex_unlock(&info->lock);
639 }
640 
641 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
642                                            u8 *src, u32 s_pitch, u32 height)
643 {
644         int i, j;
645 
646         d_pitch -= s_pitch;
647 
648         for (i = height; i--; ) {
649                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
650                 for (j = 0; j < s_pitch; j++)
651                         *dst++ = *src++;
652                 dst += d_pitch;
653         }
654 }
655 
656 /* drivers/video/fb_defio.c */
657 extern void fb_deferred_io_init(struct fb_info *info);
658 extern void fb_deferred_io_open(struct fb_info *info,
659                                 struct inode *inode,
660                                 struct file *file);
661 extern void fb_deferred_io_cleanup(struct fb_info *info);
662 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
663                                 loff_t end, int datasync);
664 
665 static inline bool fb_be_math(struct fb_info *info)
666 {
667 #ifdef CONFIG_FB_FOREIGN_ENDIAN
668 #if defined(CONFIG_FB_BOTH_ENDIAN)
669         return info->flags & FBINFO_BE_MATH;
670 #elif defined(CONFIG_FB_BIG_ENDIAN)
671         return true;
672 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
673         return false;
674 #endif /* CONFIG_FB_BOTH_ENDIAN */
675 #else
676 #ifdef __BIG_ENDIAN
677         return true;
678 #else
679         return false;
680 #endif /* __BIG_ENDIAN */
681 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
682 }
683 
684 /* drivers/video/fbsysfs.c */
685 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
686 extern void framebuffer_release(struct fb_info *info);
687 extern int fb_init_device(struct fb_info *fb_info);
688 extern void fb_cleanup_device(struct fb_info *head);
689 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
690 
691 /* drivers/video/fbmon.c */
692 #define FB_MAXTIMINGS           0
693 #define FB_VSYNCTIMINGS         1
694 #define FB_HSYNCTIMINGS         2
695 #define FB_DCLKTIMINGS          3
696 #define FB_IGNOREMON            0x100
697 
698 #define FB_MODE_IS_UNKNOWN      0
699 #define FB_MODE_IS_DETAILED     1
700 #define FB_MODE_IS_STANDARD     2
701 #define FB_MODE_IS_VESA         4
702 #define FB_MODE_IS_CALCULATED   8
703 #define FB_MODE_IS_FIRST        16
704 #define FB_MODE_IS_FROM_VAR     32
705 
706 extern int fbmon_dpms(const struct fb_info *fb_info);
707 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
708                        struct fb_info *info);
709 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
710                             struct fb_info *info);
711 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
712 extern const unsigned char *fb_firmware_edid(struct device *device);
713 extern void fb_edid_to_monspecs(unsigned char *edid,
714                                 struct fb_monspecs *specs);
715 extern void fb_edid_add_monspecs(unsigned char *edid,
716                                  struct fb_monspecs *specs);
717 extern void fb_destroy_modedb(struct fb_videomode *modedb);
718 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
719 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
720 
721 extern int of_get_fb_videomode(struct device_node *np,
722                                struct fb_videomode *fb,
723                                int index);
724 extern int fb_videomode_from_videomode(const struct videomode *vm,
725                                        struct fb_videomode *fbmode);
726 
727 /* drivers/video/modedb.c */
728 #define VESA_MODEDB_SIZE 34
729 extern void fb_var_to_videomode(struct fb_videomode *mode,
730                                 const struct fb_var_screeninfo *var);
731 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
732                                 const struct fb_videomode *mode);
733 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
734                             const struct fb_videomode *mode2);
735 extern int fb_add_videomode(const struct fb_videomode *mode,
736                             struct list_head *head);
737 extern void fb_delete_videomode(const struct fb_videomode *mode,
738                                 struct list_head *head);
739 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
740                                                 struct list_head *head);
741 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
742                                                     struct list_head *head);
743 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
744                                                        struct list_head *head);
745 extern void fb_destroy_modelist(struct list_head *head);
746 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
747                                      struct list_head *head);
748 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
749                                                        struct list_head *head);
750 
751 /* drivers/video/fbcmap.c */
752 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
753 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
754 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
755 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
756 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
757 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
758 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
759 extern const struct fb_cmap *fb_default_cmap(int len);
760 extern void fb_invert_cmaps(void);
761 
762 struct fb_videomode {
763         const char *name;       /* optional */
764         u32 refresh;            /* optional */
765         u32 xres;
766         u32 yres;
767         u32 pixclock;
768         u32 left_margin;
769         u32 right_margin;
770         u32 upper_margin;
771         u32 lower_margin;
772         u32 hsync_len;
773         u32 vsync_len;
774         u32 sync;
775         u32 vmode;
776         u32 flag;
777 };
778 
779 extern const char *fb_mode_option;
780 extern const struct fb_videomode vesa_modes[];
781 extern const struct fb_videomode cea_modes[64];
782 
783 struct fb_modelist {
784         struct list_head list;
785         struct fb_videomode mode;
786 };
787 
788 extern int fb_find_mode(struct fb_var_screeninfo *var,
789                         struct fb_info *info, const char *mode_option,
790                         const struct fb_videomode *db,
791                         unsigned int dbsize,
792                         const struct fb_videomode *default_mode,
793                         unsigned int default_bpp);
794 
795 /* Convenience logging macros */
796 #define fb_err(fb_info, fmt, ...)                                       \
797         pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
798 #define fb_notice(info, fmt, ...)                                       \
799         pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
800 #define fb_warn(fb_info, fmt, ...)                                      \
801         pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
802 #define fb_info(fb_info, fmt, ...)                                      \
803         pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
804 #define fb_dbg(fb_info, fmt, ...)                                       \
805         pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
806 
807 #endif /* _LINUX_FB_H */
808 

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