Version:  2.0.40 2.2.26 2.4.37 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 3.16 3.17

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 #define FB_MISC_HDMI            4
 51 struct fb_chroma {
 52         __u32 redx;     /* in fraction of 1024 */
 53         __u32 greenx;
 54         __u32 bluex;
 55         __u32 whitex;
 56         __u32 redy;
 57         __u32 greeny;
 58         __u32 bluey;
 59         __u32 whitey;
 60 };
 61 
 62 struct fb_monspecs {
 63         struct fb_chroma chroma;
 64         struct fb_videomode *modedb;    /* mode database */
 65         __u8  manufacturer[4];          /* Manufacturer */
 66         __u8  monitor[14];              /* Monitor String */
 67         __u8  serial_no[14];            /* Serial Number */
 68         __u8  ascii[14];                /* ? */
 69         __u32 modedb_len;               /* mode database length */
 70         __u32 model;                    /* Monitor Model */
 71         __u32 serial;                   /* Serial Number - Integer */
 72         __u32 year;                     /* Year manufactured */
 73         __u32 week;                     /* Week Manufactured */
 74         __u32 hfmin;                    /* hfreq lower limit (Hz) */
 75         __u32 hfmax;                    /* hfreq upper limit (Hz) */
 76         __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
 77         __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
 78         __u16 input;                    /* display type - see FB_DISP_* */
 79         __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
 80         __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
 81         __u16 vfmin;                    /* vfreq lower limit (Hz) */
 82         __u16 vfmax;                    /* vfreq upper limit (Hz) */
 83         __u16 gamma;                    /* Gamma - in fractions of 100 */
 84         __u16 gtf       : 1;            /* supports GTF */
 85         __u16 misc;                     /* Misc flags - see FB_MISC_* */
 86         __u8  version;                  /* EDID version... */
 87         __u8  revision;                 /* ...and revision */
 88         __u8  max_x;                    /* Maximum horizontal size (cm) */
 89         __u8  max_y;                    /* Maximum vertical size (cm) */
 90 };
 91 
 92 struct fb_cmap_user {
 93         __u32 start;                    /* First entry  */
 94         __u32 len;                      /* Number of entries */
 95         __u16 __user *red;              /* Red values   */
 96         __u16 __user *green;
 97         __u16 __user *blue;
 98         __u16 __user *transp;           /* transparency, can be NULL */
 99 };
100 
101 struct fb_image_user {
102         __u32 dx;                       /* Where to place image */
103         __u32 dy;
104         __u32 width;                    /* Size of image */
105         __u32 height;
106         __u32 fg_color;                 /* Only used when a mono bitmap */
107         __u32 bg_color;
108         __u8  depth;                    /* Depth of the image */
109         const char __user *data;        /* Pointer to image data */
110         struct fb_cmap_user cmap;       /* color map info */
111 };
112 
113 struct fb_cursor_user {
114         __u16 set;                      /* what to set */
115         __u16 enable;                   /* cursor on/off */
116         __u16 rop;                      /* bitop operation */
117         const char __user *mask;        /* cursor mask bits */
118         struct fbcurpos hot;            /* cursor hot spot */
119         struct fb_image_user image;     /* Cursor image */
120 };
121 
122 /*
123  * Register/unregister for framebuffer events
124  */
125 
126 /*      The resolution of the passed in fb_info about to change */ 
127 #define FB_EVENT_MODE_CHANGE            0x01
128 /*      The display on this fb_info is beeing suspended, no access to the
129  *      framebuffer is allowed any more after that call returns
130  */
131 #define FB_EVENT_SUSPEND                0x02
132 /*      The display on this fb_info was resumed, you can restore the display
133  *      if you own it
134  */
135 #define FB_EVENT_RESUME                 0x03
136 /*      An entry from the modelist was removed */
137 #define FB_EVENT_MODE_DELETE            0x04
138 /*      A driver registered itself */
139 #define FB_EVENT_FB_REGISTERED          0x05
140 /*      A driver unregistered itself */
141 #define FB_EVENT_FB_UNREGISTERED        0x06
142 /*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
143 #define FB_EVENT_GET_CONSOLE_MAP        0x07
144 /*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
145 #define FB_EVENT_SET_CONSOLE_MAP        0x08
146 /*      A hardware display blank change occurred */
147 #define FB_EVENT_BLANK                  0x09
148 /*      Private modelist is to be replaced */
149 #define FB_EVENT_NEW_MODELIST           0x0A
150 /*      The resolution of the passed in fb_info about to change and
151         all vc's should be changed         */
152 #define FB_EVENT_MODE_CHANGE_ALL        0x0B
153 /*      A software display blank change occurred */
154 #define FB_EVENT_CONBLANK               0x0C
155 /*      Get drawing requirements        */
156 #define FB_EVENT_GET_REQ                0x0D
157 /*      Unbind from the console if possible */
158 #define FB_EVENT_FB_UNBIND              0x0E
159 /*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
160 #define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
161 /*      A hardware display blank early change occured */
162 #define FB_EARLY_EVENT_BLANK            0x10
163 /*      A hardware display blank revert early change occured */
164 #define FB_R_EARLY_EVENT_BLANK          0x11
165 
166 struct fb_event {
167         struct fb_info *info;
168         void *data;
169 };
170 
171 struct fb_blit_caps {
172         u32 x;
173         u32 y;
174         u32 len;
175         u32 flags;
176 };
177 
178 extern int fb_register_client(struct notifier_block *nb);
179 extern int fb_unregister_client(struct notifier_block *nb);
180 extern 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 
194 struct 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
212 struct 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 
237 struct 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 
318 struct 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 
327 struct 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 
338 struct 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 
347 struct 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 
358 struct 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 
367 struct 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 
448 struct 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         char __iomem *screen_base;      /* Virtual address */
487         unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */ 
488         void *pseudo_palette;           /* Fake palette of 16 colors */ 
489 #define FBINFO_STATE_RUNNING    0
490 #define FBINFO_STATE_SUSPENDED  1
491         u32 state;                      /* Hardware state i.e suspend */
492         void *fbcon_par;                /* fbcon use-only private area */
493         /* From here on everything is device dependent */
494         void *par;
495         /* we need the PCI or similar aperture base/size not
496            smem_start/size as smem_start may just be an object
497            allocated inside the aperture so may not actually overlap */
498         struct apertures_struct {
499                 unsigned int count;
500                 struct aperture {
501                         resource_size_t base;
502                         resource_size_t size;
503                 } ranges[0];
504         } *apertures;
505 
506         bool skip_vt_switch; /* no VT switch on suspend/resume required */
507 };
508 
509 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
510         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
511                         + max_num * sizeof(struct aperture), GFP_KERNEL);
512         if (!a)
513                 return NULL;
514         a->count = max_num;
515         return a;
516 }
517 
518 #ifdef MODULE
519 #define FBINFO_DEFAULT  FBINFO_MODULE
520 #else
521 #define FBINFO_DEFAULT  0
522 #endif
523 
524 // This will go away
525 #define FBINFO_FLAG_MODULE      FBINFO_MODULE
526 #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
527 
528 /* This will go away
529  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
530  * when it wants to turn the acceleration engine on.  This is
531  * really a separate operation, and should be modified via sysfs.
532  *  But for now, we leave it broken with the following define
533  */
534 #define STUPID_ACCELF_TEXT_SHIT
535 
536 // This will go away
537 #if defined(__sparc__)
538 
539 /* We map all of our framebuffers such that big-endian accesses
540  * are what we want, so the following is sufficient.
541  */
542 
543 // This will go away
544 #define fb_readb sbus_readb
545 #define fb_readw sbus_readw
546 #define fb_readl sbus_readl
547 #define fb_readq sbus_readq
548 #define fb_writeb sbus_writeb
549 #define fb_writew sbus_writew
550 #define fb_writel sbus_writel
551 #define fb_writeq sbus_writeq
552 #define fb_memset sbus_memset_io
553 #define fb_memcpy_fromfb sbus_memcpy_fromio
554 #define fb_memcpy_tofb sbus_memcpy_toio
555 
556 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
557 
558 #define fb_readb __raw_readb
559 #define fb_readw __raw_readw
560 #define fb_readl __raw_readl
561 #define fb_readq __raw_readq
562 #define fb_writeb __raw_writeb
563 #define fb_writew __raw_writew
564 #define fb_writel __raw_writel
565 #define fb_writeq __raw_writeq
566 #define fb_memset memset_io
567 #define fb_memcpy_fromfb memcpy_fromio
568 #define fb_memcpy_tofb memcpy_toio
569 
570 #else
571 
572 #define fb_readb(addr) (*(volatile u8 *) (addr))
573 #define fb_readw(addr) (*(volatile u16 *) (addr))
574 #define fb_readl(addr) (*(volatile u32 *) (addr))
575 #define fb_readq(addr) (*(volatile u64 *) (addr))
576 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
577 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
578 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
579 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
580 #define fb_memset memset
581 #define fb_memcpy_fromfb memcpy
582 #define fb_memcpy_tofb memcpy
583 
584 #endif
585 
586 #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
587 #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
588                                                       (val) << (bits))
589 #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
590                                                       (val) >> (bits))
591 
592     /*
593      *  `Generic' versions of the frame buffer device operations
594      */
595 
596 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
597 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
598 extern int fb_blank(struct fb_info *info, int blank);
599 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
600 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
601 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
602 /*
603  * Drawing operations where framebuffer is in system RAM
604  */
605 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
606 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
607 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
608 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
609                            size_t count, loff_t *ppos);
610 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
611                             size_t count, loff_t *ppos);
612 
613 /* drivers/video/fbmem.c */
614 extern int register_framebuffer(struct fb_info *fb_info);
615 extern int unregister_framebuffer(struct fb_info *fb_info);
616 extern int unlink_framebuffer(struct fb_info *fb_info);
617 extern int remove_conflicting_framebuffers(struct apertures_struct *a,
618                                            const char *name, bool primary);
619 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
620 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
621 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
622 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
623                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
624 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
625 extern void fb_set_suspend(struct fb_info *info, int state);
626 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
627                               struct fb_fix_screeninfo *fix);
628 extern int fb_get_options(const char *name, char **option);
629 extern int fb_new_modelist(struct fb_info *info);
630 
631 extern struct fb_info *registered_fb[FB_MAX];
632 extern int num_registered_fb;
633 extern struct class *fb_class;
634 
635 extern int lock_fb_info(struct fb_info *info);
636 
637 static inline void unlock_fb_info(struct fb_info *info)
638 {
639         mutex_unlock(&info->lock);
640 }
641 
642 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
643                                            u8 *src, u32 s_pitch, u32 height)
644 {
645         u32 i, j;
646 
647         d_pitch -= s_pitch;
648 
649         for (i = height; i--; ) {
650                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
651                 for (j = 0; j < s_pitch; j++)
652                         *dst++ = *src++;
653                 dst += d_pitch;
654         }
655 }
656 
657 /* drivers/video/fb_defio.c */
658 extern void fb_deferred_io_init(struct fb_info *info);
659 extern void fb_deferred_io_open(struct fb_info *info,
660                                 struct inode *inode,
661                                 struct file *file);
662 extern void fb_deferred_io_cleanup(struct fb_info *info);
663 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
664                                 loff_t end, int datasync);
665 
666 static inline bool fb_be_math(struct fb_info *info)
667 {
668 #ifdef CONFIG_FB_FOREIGN_ENDIAN
669 #if defined(CONFIG_FB_BOTH_ENDIAN)
670         return info->flags & FBINFO_BE_MATH;
671 #elif defined(CONFIG_FB_BIG_ENDIAN)
672         return true;
673 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
674         return false;
675 #endif /* CONFIG_FB_BOTH_ENDIAN */
676 #else
677 #ifdef __BIG_ENDIAN
678         return true;
679 #else
680         return false;
681 #endif /* __BIG_ENDIAN */
682 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
683 }
684 
685 /* drivers/video/fbsysfs.c */
686 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
687 extern void framebuffer_release(struct fb_info *info);
688 extern int fb_init_device(struct fb_info *fb_info);
689 extern void fb_cleanup_device(struct fb_info *head);
690 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
691 
692 /* drivers/video/fbmon.c */
693 #define FB_MAXTIMINGS           0
694 #define FB_VSYNCTIMINGS         1
695 #define FB_HSYNCTIMINGS         2
696 #define FB_DCLKTIMINGS          3
697 #define FB_IGNOREMON            0x100
698 
699 #define FB_MODE_IS_UNKNOWN      0
700 #define FB_MODE_IS_DETAILED     1
701 #define FB_MODE_IS_STANDARD     2
702 #define FB_MODE_IS_VESA         4
703 #define FB_MODE_IS_CALCULATED   8
704 #define FB_MODE_IS_FIRST        16
705 #define FB_MODE_IS_FROM_VAR     32
706 
707 extern int fbmon_dpms(const struct fb_info *fb_info);
708 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
709                        struct fb_info *info);
710 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
711                             struct fb_info *info);
712 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
713 extern const unsigned char *fb_firmware_edid(struct device *device);
714 extern void fb_edid_to_monspecs(unsigned char *edid,
715                                 struct fb_monspecs *specs);
716 extern void fb_edid_add_monspecs(unsigned char *edid,
717                                  struct fb_monspecs *specs);
718 extern void fb_destroy_modedb(struct fb_videomode *modedb);
719 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
720 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
721 
722 extern int of_get_fb_videomode(struct device_node *np,
723                                struct fb_videomode *fb,
724                                int index);
725 extern int fb_videomode_from_videomode(const struct videomode *vm,
726                                        struct fb_videomode *fbmode);
727 
728 /* drivers/video/modedb.c */
729 #define VESA_MODEDB_SIZE 34
730 extern void fb_var_to_videomode(struct fb_videomode *mode,
731                                 const struct fb_var_screeninfo *var);
732 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
733                                 const struct fb_videomode *mode);
734 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
735                             const struct fb_videomode *mode2);
736 extern int fb_add_videomode(const struct fb_videomode *mode,
737                             struct list_head *head);
738 extern void fb_delete_videomode(const struct fb_videomode *mode,
739                                 struct list_head *head);
740 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
741                                                 struct list_head *head);
742 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
743                                                     struct list_head *head);
744 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
745                                                        struct list_head *head);
746 extern void fb_destroy_modelist(struct list_head *head);
747 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
748                                      struct list_head *head);
749 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
750                                                        struct list_head *head);
751 
752 /* drivers/video/fbcmap.c */
753 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
754 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
755 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
756 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
757 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
758 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
759 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
760 extern const struct fb_cmap *fb_default_cmap(int len);
761 extern void fb_invert_cmaps(void);
762 
763 struct fb_videomode {
764         const char *name;       /* optional */
765         u32 refresh;            /* optional */
766         u32 xres;
767         u32 yres;
768         u32 pixclock;
769         u32 left_margin;
770         u32 right_margin;
771         u32 upper_margin;
772         u32 lower_margin;
773         u32 hsync_len;
774         u32 vsync_len;
775         u32 sync;
776         u32 vmode;
777         u32 flag;
778 };
779 
780 extern const char *fb_mode_option;
781 extern const struct fb_videomode vesa_modes[];
782 extern const struct fb_videomode cea_modes[64];
783 
784 struct fb_modelist {
785         struct list_head list;
786         struct fb_videomode mode;
787 };
788 
789 extern int fb_find_mode(struct fb_var_screeninfo *var,
790                         struct fb_info *info, const char *mode_option,
791                         const struct fb_videomode *db,
792                         unsigned int dbsize,
793                         const struct fb_videomode *default_mode,
794                         unsigned int default_bpp);
795 
796 /* Convenience logging macros */
797 #define fb_err(fb_info, fmt, ...)                                       \
798         pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
799 #define fb_notice(info, fmt, ...)                                       \
800         pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
801 #define fb_warn(fb_info, fmt, ...)                                      \
802         pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
803 #define fb_info(fb_info, fmt, ...)                                      \
804         pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
805 #define fb_dbg(fb_info, fmt, ...)                                       \
806         pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
807 
808 #endif /* _LINUX_FB_H */
809 

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