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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 #ifdef CONFIG_FB_NOTIFY
179 extern int fb_register_client(struct notifier_block *nb);
180 extern int fb_unregister_client(struct notifier_block *nb);
181 extern int fb_notifier_call_chain(unsigned long val, void *v);
182 #else
183 static inline int fb_register_client(struct notifier_block *nb)
184 {
185         return 0;
186 };
187 
188 static inline int fb_unregister_client(struct notifier_block *nb)
189 {
190         return 0;
191 };
192 
193 static inline int fb_notifier_call_chain(unsigned long val, void *v)
194 {
195         return 0;
196 };
197 #endif
198 
199 /*
200  * Pixmap structure definition
201  *
202  * The purpose of this structure is to translate data
203  * from the hardware independent format of fbdev to what
204  * format the hardware needs.
205  */
206 
207 #define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
208 #define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
209 #define FB_PIXMAP_IO      4     /* memory is iomapped       */
210 #define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
211 
212 struct fb_pixmap {
213         u8  *addr;              /* pointer to memory                    */
214         u32 size;               /* size of buffer in bytes              */
215         u32 offset;             /* current offset to buffer             */
216         u32 buf_align;          /* byte alignment of each bitmap        */
217         u32 scan_align;         /* alignment per scanline               */
218         u32 access_align;       /* alignment per read/write (bits)      */
219         u32 flags;              /* see FB_PIXMAP_*                      */
220         u32 blit_x;             /* supported bit block dimensions (1-32)*/
221         u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
222                                 /*         blit_y = 1 << (height - 1)   */
223                                 /* if 0, will be set to 0xffffffff (all)*/
224         /* access methods */
225         void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
226         void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
227 };
228 
229 #ifdef CONFIG_FB_DEFERRED_IO
230 struct fb_deferred_io {
231         /* delay between mkwrite and deferred handler */
232         unsigned long delay;
233         struct mutex lock; /* mutex that protects the page list */
234         struct list_head pagelist; /* list of touched pages */
235         /* callback */
236         void (*first_io)(struct fb_info *info);
237         void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
238 };
239 #endif
240 
241 /*
242  * Frame buffer operations
243  *
244  * LOCKING NOTE: those functions must _ALL_ be called with the console
245  * semaphore held, this is the only suitable locking mechanism we have
246  * in 2.6. Some may be called at interrupt time at this point though.
247  *
248  * The exception to this is the debug related hooks.  Putting the fb
249  * into a debug state (e.g. flipping to the kernel console) and restoring
250  * it must be done in a lock-free manner, so low level drivers should
251  * keep track of the initial console (if applicable) and may need to
252  * perform direct, unlocked hardware writes in these hooks.
253  */
254 
255 struct fb_ops {
256         /* open/release and usage marking */
257         struct module *owner;
258         int (*fb_open)(struct fb_info *info, int user);
259         int (*fb_release)(struct fb_info *info, int user);
260 
261         /* For framebuffers with strange non linear layouts or that do not
262          * work with normal memory mapped access
263          */
264         ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
265                            size_t count, loff_t *ppos);
266         ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
267                             size_t count, loff_t *ppos);
268 
269         /* checks var and eventually tweaks it to something supported,
270          * DO NOT MODIFY PAR */
271         int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
272 
273         /* set the video mode according to info->var */
274         int (*fb_set_par)(struct fb_info *info);
275 
276         /* set color register */
277         int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
278                             unsigned blue, unsigned transp, struct fb_info *info);
279 
280         /* set color registers in batch */
281         int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
282 
283         /* blank display */
284         int (*fb_blank)(int blank, struct fb_info *info);
285 
286         /* pan display */
287         int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
288 
289         /* Draws a rectangle */
290         void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
291         /* Copy data from area to another */
292         void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
293         /* Draws a image to the display */
294         void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
295 
296         /* Draws cursor */
297         int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
298 
299         /* wait for blit idle, optional */
300         int (*fb_sync)(struct fb_info *info);
301 
302         /* perform fb specific ioctl (optional) */
303         int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
304                         unsigned long arg);
305 
306         /* Handle 32bit compat ioctl (optional) */
307         int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
308                         unsigned long arg);
309 
310         /* perform fb specific mmap */
311         int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
312 
313         /* get capability given var */
314         void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
315                             struct fb_var_screeninfo *var);
316 
317         /* teardown any resources to do with this framebuffer */
318         void (*fb_destroy)(struct fb_info *info);
319 
320         /* called at KDB enter and leave time to prepare the console */
321         int (*fb_debug_enter)(struct fb_info *info);
322         int (*fb_debug_leave)(struct fb_info *info);
323 };
324 
325 #ifdef CONFIG_FB_TILEBLITTING
326 #define FB_TILE_CURSOR_NONE        0
327 #define FB_TILE_CURSOR_UNDERLINE   1
328 #define FB_TILE_CURSOR_LOWER_THIRD 2
329 #define FB_TILE_CURSOR_LOWER_HALF  3
330 #define FB_TILE_CURSOR_TWO_THIRDS  4
331 #define FB_TILE_CURSOR_BLOCK       5
332 
333 struct fb_tilemap {
334         __u32 width;                /* width of each tile in pixels */
335         __u32 height;               /* height of each tile in scanlines */
336         __u32 depth;                /* color depth of each tile */
337         __u32 length;               /* number of tiles in the map */
338         const __u8 *data;           /* actual tile map: a bitmap array, packed
339                                        to the nearest byte */
340 };
341 
342 struct fb_tilerect {
343         __u32 sx;                   /* origin in the x-axis */
344         __u32 sy;                   /* origin in the y-axis */
345         __u32 width;                /* number of tiles in the x-axis */
346         __u32 height;               /* number of tiles in the y-axis */
347         __u32 index;                /* what tile to use: index to tile map */
348         __u32 fg;                   /* foreground color */
349         __u32 bg;                   /* background color */
350         __u32 rop;                  /* raster operation */
351 };
352 
353 struct fb_tilearea {
354         __u32 sx;                   /* source origin in the x-axis */
355         __u32 sy;                   /* source origin in the y-axis */
356         __u32 dx;                   /* destination origin in the x-axis */
357         __u32 dy;                   /* destination origin in the y-axis */
358         __u32 width;                /* number of tiles in the x-axis */
359         __u32 height;               /* number of tiles in the y-axis */
360 };
361 
362 struct fb_tileblit {
363         __u32 sx;                   /* origin in the x-axis */
364         __u32 sy;                   /* origin in the y-axis */
365         __u32 width;                /* number of tiles in the x-axis */
366         __u32 height;               /* number of tiles in the y-axis */
367         __u32 fg;                   /* foreground color */
368         __u32 bg;                   /* background color */
369         __u32 length;               /* number of tiles to draw */
370         __u32 *indices;             /* array of indices to tile map */
371 };
372 
373 struct fb_tilecursor {
374         __u32 sx;                   /* cursor position in the x-axis */
375         __u32 sy;                   /* cursor position in the y-axis */
376         __u32 mode;                 /* 0 = erase, 1 = draw */
377         __u32 shape;                /* see FB_TILE_CURSOR_* */
378         __u32 fg;                   /* foreground color */
379         __u32 bg;                   /* background color */
380 };
381 
382 struct fb_tile_ops {
383         /* set tile characteristics */
384         void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
385 
386         /* all dimensions from hereon are in terms of tiles */
387 
388         /* move a rectangular region of tiles from one area to another*/
389         void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
390         /* fill a rectangular region with a tile */
391         void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
392         /* copy an array of tiles */
393         void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
394         /* cursor */
395         void (*fb_tilecursor)(struct fb_info *info,
396                               struct fb_tilecursor *cursor);
397         /* get maximum length of the tile map */
398         int (*fb_get_tilemax)(struct fb_info *info);
399 };
400 #endif /* CONFIG_FB_TILEBLITTING */
401 
402 /* FBINFO_* = fb_info.flags bit flags */
403 #define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
404 #define FBINFO_HWACCEL_DISABLED 0x0002
405         /* When FBINFO_HWACCEL_DISABLED is set:
406          *  Hardware acceleration is turned off.  Software implementations
407          *  of required functions (copyarea(), fillrect(), and imageblit())
408          *  takes over; acceleration engine should be in a quiescent state */
409 
410 /* hints */
411 #define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
412 #define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
413 #define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
414 
415 /* hardware supported ops */
416 /*  semantics: when a bit is set, it indicates that the operation is
417  *   accelerated by hardware.
418  *  required functions will still work even if the bit is not set.
419  *  optional functions may not even exist if the flag bit is not set.
420  */
421 #define FBINFO_HWACCEL_NONE             0x0000
422 #define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
423 #define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
424 #define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
425 #define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
426 #define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
427 #define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
428 #define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
429 
430 #define FBINFO_MISC_USEREVENT          0x10000 /* event request
431                                                   from userspace */
432 #define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
433 
434 /* A driver may set this flag to indicate that it does want a set_par to be
435  * called every time when fbcon_switch is executed. The advantage is that with
436  * this flag set you can really be sure that set_par is always called before
437  * any of the functions dependent on the correct hardware state or altering
438  * that state, even if you are using some broken X releases. The disadvantage
439  * is that it introduces unwanted delays to every console switch if set_par
440  * is slow. It is a good idea to try this flag in the drivers initialization
441  * code whenever there is a bug report related to switching between X and the
442  * framebuffer console.
443  */
444 #define FBINFO_MISC_ALWAYS_SETPAR   0x40000
445 
446 /* where the fb is a firmware driver, and can be replaced with a proper one */
447 #define FBINFO_MISC_FIRMWARE        0x80000
448 /*
449  * Host and GPU endianness differ.
450  */
451 #define FBINFO_FOREIGN_ENDIAN   0x100000
452 /*
453  * Big endian math. This is the same flags as above, but with different
454  * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
455  * and host endianness. Drivers should not use this flag.
456  */
457 #define FBINFO_BE_MATH  0x100000
458 
459 /* report to the VT layer that this fb driver can accept forced console
460    output like oopses */
461 #define FBINFO_CAN_FORCE_OUTPUT     0x200000
462 
463 struct fb_info {
464         atomic_t count;
465         int node;
466         int flags;
467         struct mutex lock;              /* Lock for open/release/ioctl funcs */
468         struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
469         struct fb_var_screeninfo var;   /* Current var */
470         struct fb_fix_screeninfo fix;   /* Current fix */
471         struct fb_monspecs monspecs;    /* Current Monitor specs */
472         struct work_struct queue;       /* Framebuffer event queue */
473         struct fb_pixmap pixmap;        /* Image hardware mapper */
474         struct fb_pixmap sprite;        /* Cursor hardware mapper */
475         struct fb_cmap cmap;            /* Current cmap */
476         struct list_head modelist;      /* mode list */
477         struct fb_videomode *mode;      /* current mode */
478 
479 #ifdef CONFIG_FB_BACKLIGHT
480         /* assigned backlight device */
481         /* set before framebuffer registration, 
482            remove after unregister */
483         struct backlight_device *bl_dev;
484 
485         /* Backlight level curve */
486         struct mutex bl_curve_mutex;    
487         u8 bl_curve[FB_BACKLIGHT_LEVELS];
488 #endif
489 #ifdef CONFIG_FB_DEFERRED_IO
490         struct delayed_work deferred_work;
491         struct fb_deferred_io *fbdefio;
492 #endif
493 
494         struct fb_ops *fbops;
495         struct device *device;          /* This is the parent */
496         struct device *dev;             /* This is this fb device */
497         int class_flag;                    /* private sysfs flags */
498 #ifdef CONFIG_FB_TILEBLITTING
499         struct fb_tile_ops *tileops;    /* Tile Blitting */
500 #endif
501         union {
502                 char __iomem *screen_base;      /* Virtual address */
503                 char *screen_buffer;
504         };
505         unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */ 
506         void *pseudo_palette;           /* Fake palette of 16 colors */ 
507 #define FBINFO_STATE_RUNNING    0
508 #define FBINFO_STATE_SUSPENDED  1
509         u32 state;                      /* Hardware state i.e suspend */
510         void *fbcon_par;                /* fbcon use-only private area */
511         /* From here on everything is device dependent */
512         void *par;
513         /* we need the PCI or similar aperture base/size not
514            smem_start/size as smem_start may just be an object
515            allocated inside the aperture so may not actually overlap */
516         struct apertures_struct {
517                 unsigned int count;
518                 struct aperture {
519                         resource_size_t base;
520                         resource_size_t size;
521                 } ranges[0];
522         } *apertures;
523 
524         bool skip_vt_switch; /* no VT switch on suspend/resume required */
525 };
526 
527 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
528         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
529                         + max_num * sizeof(struct aperture), GFP_KERNEL);
530         if (!a)
531                 return NULL;
532         a->count = max_num;
533         return a;
534 }
535 
536 #ifdef MODULE
537 #define FBINFO_DEFAULT  FBINFO_MODULE
538 #else
539 #define FBINFO_DEFAULT  0
540 #endif
541 
542 // This will go away
543 #define FBINFO_FLAG_MODULE      FBINFO_MODULE
544 #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
545 
546 /* This will go away
547  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
548  * when it wants to turn the acceleration engine on.  This is
549  * really a separate operation, and should be modified via sysfs.
550  *  But for now, we leave it broken with the following define
551  */
552 #define STUPID_ACCELF_TEXT_SHIT
553 
554 // This will go away
555 #if defined(__sparc__)
556 
557 /* We map all of our framebuffers such that big-endian accesses
558  * are what we want, so the following is sufficient.
559  */
560 
561 // This will go away
562 #define fb_readb sbus_readb
563 #define fb_readw sbus_readw
564 #define fb_readl sbus_readl
565 #define fb_readq sbus_readq
566 #define fb_writeb sbus_writeb
567 #define fb_writew sbus_writew
568 #define fb_writel sbus_writel
569 #define fb_writeq sbus_writeq
570 #define fb_memset sbus_memset_io
571 #define fb_memcpy_fromfb sbus_memcpy_fromio
572 #define fb_memcpy_tofb sbus_memcpy_toio
573 
574 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
575 
576 #define fb_readb __raw_readb
577 #define fb_readw __raw_readw
578 #define fb_readl __raw_readl
579 #define fb_readq __raw_readq
580 #define fb_writeb __raw_writeb
581 #define fb_writew __raw_writew
582 #define fb_writel __raw_writel
583 #define fb_writeq __raw_writeq
584 #define fb_memset memset_io
585 #define fb_memcpy_fromfb memcpy_fromio
586 #define fb_memcpy_tofb memcpy_toio
587 
588 #else
589 
590 #define fb_readb(addr) (*(volatile u8 *) (addr))
591 #define fb_readw(addr) (*(volatile u16 *) (addr))
592 #define fb_readl(addr) (*(volatile u32 *) (addr))
593 #define fb_readq(addr) (*(volatile u64 *) (addr))
594 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
595 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
596 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
597 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
598 #define fb_memset memset
599 #define fb_memcpy_fromfb memcpy
600 #define fb_memcpy_tofb memcpy
601 
602 #endif
603 
604 #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
605 #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
606                                                       (val) << (bits))
607 #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
608                                                       (val) >> (bits))
609 
610     /*
611      *  `Generic' versions of the frame buffer device operations
612      */
613 
614 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
615 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
616 extern int fb_blank(struct fb_info *info, int blank);
617 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
618 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
619 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
620 /*
621  * Drawing operations where framebuffer is in system RAM
622  */
623 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
624 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
625 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
626 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
627                            size_t count, loff_t *ppos);
628 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
629                             size_t count, loff_t *ppos);
630 
631 /* drivers/video/fbmem.c */
632 extern int register_framebuffer(struct fb_info *fb_info);
633 extern int unregister_framebuffer(struct fb_info *fb_info);
634 extern int unlink_framebuffer(struct fb_info *fb_info);
635 extern int remove_conflicting_framebuffers(struct apertures_struct *a,
636                                            const char *name, bool primary);
637 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
638 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
639 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
640 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
641                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
642 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
643 extern void fb_set_suspend(struct fb_info *info, int state);
644 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
645                               struct fb_fix_screeninfo *fix);
646 extern int fb_get_options(const char *name, char **option);
647 extern int fb_new_modelist(struct fb_info *info);
648 
649 extern struct fb_info *registered_fb[FB_MAX];
650 extern int num_registered_fb;
651 extern struct class *fb_class;
652 
653 extern int lock_fb_info(struct fb_info *info);
654 
655 static inline void unlock_fb_info(struct fb_info *info)
656 {
657         mutex_unlock(&info->lock);
658 }
659 
660 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
661                                            u8 *src, u32 s_pitch, u32 height)
662 {
663         u32 i, j;
664 
665         d_pitch -= s_pitch;
666 
667         for (i = height; i--; ) {
668                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
669                 for (j = 0; j < s_pitch; j++)
670                         *dst++ = *src++;
671                 dst += d_pitch;
672         }
673 }
674 
675 /* drivers/video/fb_defio.c */
676 int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma);
677 extern void fb_deferred_io_init(struct fb_info *info);
678 extern void fb_deferred_io_open(struct fb_info *info,
679                                 struct inode *inode,
680                                 struct file *file);
681 extern void fb_deferred_io_cleanup(struct fb_info *info);
682 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
683                                 loff_t end, int datasync);
684 
685 static inline bool fb_be_math(struct fb_info *info)
686 {
687 #ifdef CONFIG_FB_FOREIGN_ENDIAN
688 #if defined(CONFIG_FB_BOTH_ENDIAN)
689         return info->flags & FBINFO_BE_MATH;
690 #elif defined(CONFIG_FB_BIG_ENDIAN)
691         return true;
692 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
693         return false;
694 #endif /* CONFIG_FB_BOTH_ENDIAN */
695 #else
696 #ifdef __BIG_ENDIAN
697         return true;
698 #else
699         return false;
700 #endif /* __BIG_ENDIAN */
701 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
702 }
703 
704 /* drivers/video/fbsysfs.c */
705 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
706 extern void framebuffer_release(struct fb_info *info);
707 extern int fb_init_device(struct fb_info *fb_info);
708 extern void fb_cleanup_device(struct fb_info *head);
709 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
710 
711 /* drivers/video/fbmon.c */
712 #define FB_MAXTIMINGS           0
713 #define FB_VSYNCTIMINGS         1
714 #define FB_HSYNCTIMINGS         2
715 #define FB_DCLKTIMINGS          3
716 #define FB_IGNOREMON            0x100
717 
718 #define FB_MODE_IS_UNKNOWN      0
719 #define FB_MODE_IS_DETAILED     1
720 #define FB_MODE_IS_STANDARD     2
721 #define FB_MODE_IS_VESA         4
722 #define FB_MODE_IS_CALCULATED   8
723 #define FB_MODE_IS_FIRST        16
724 #define FB_MODE_IS_FROM_VAR     32
725 
726 extern int fbmon_dpms(const struct fb_info *fb_info);
727 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
728                        struct fb_info *info);
729 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
730                             struct fb_info *info);
731 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
732 extern const unsigned char *fb_firmware_edid(struct device *device);
733 extern void fb_edid_to_monspecs(unsigned char *edid,
734                                 struct fb_monspecs *specs);
735 extern void fb_edid_add_monspecs(unsigned char *edid,
736                                  struct fb_monspecs *specs);
737 extern void fb_destroy_modedb(struct fb_videomode *modedb);
738 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
739 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
740 
741 extern int of_get_fb_videomode(struct device_node *np,
742                                struct fb_videomode *fb,
743                                int index);
744 extern int fb_videomode_from_videomode(const struct videomode *vm,
745                                        struct fb_videomode *fbmode);
746 
747 /* drivers/video/modedb.c */
748 #define VESA_MODEDB_SIZE 43
749 #define DMT_SIZE 0x50
750 
751 extern void fb_var_to_videomode(struct fb_videomode *mode,
752                                 const struct fb_var_screeninfo *var);
753 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
754                                 const struct fb_videomode *mode);
755 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
756                             const struct fb_videomode *mode2);
757 extern int fb_add_videomode(const struct fb_videomode *mode,
758                             struct list_head *head);
759 extern void fb_delete_videomode(const struct fb_videomode *mode,
760                                 struct list_head *head);
761 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
762                                                 struct list_head *head);
763 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
764                                                     struct list_head *head);
765 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
766                                                        struct list_head *head);
767 extern void fb_destroy_modelist(struct list_head *head);
768 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
769                                      struct list_head *head);
770 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
771                                                        struct list_head *head);
772 
773 /* drivers/video/fbcmap.c */
774 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
775 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
776 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
777 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
778 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
779 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
780 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
781 extern const struct fb_cmap *fb_default_cmap(int len);
782 extern void fb_invert_cmaps(void);
783 
784 struct fb_videomode {
785         const char *name;       /* optional */
786         u32 refresh;            /* optional */
787         u32 xres;
788         u32 yres;
789         u32 pixclock;
790         u32 left_margin;
791         u32 right_margin;
792         u32 upper_margin;
793         u32 lower_margin;
794         u32 hsync_len;
795         u32 vsync_len;
796         u32 sync;
797         u32 vmode;
798         u32 flag;
799 };
800 
801 struct dmt_videomode {
802         u32 dmt_id;
803         u32 std_2byte_code;
804         u32 cvt_3byte_code;
805         const struct fb_videomode *mode;
806 };
807 
808 extern const char *fb_mode_option;
809 extern const struct fb_videomode vesa_modes[];
810 extern const struct fb_videomode cea_modes[65];
811 extern const struct dmt_videomode dmt_modes[];
812 
813 struct fb_modelist {
814         struct list_head list;
815         struct fb_videomode mode;
816 };
817 
818 extern int fb_find_mode(struct fb_var_screeninfo *var,
819                         struct fb_info *info, const char *mode_option,
820                         const struct fb_videomode *db,
821                         unsigned int dbsize,
822                         const struct fb_videomode *default_mode,
823                         unsigned int default_bpp);
824 
825 /* Convenience logging macros */
826 #define fb_err(fb_info, fmt, ...)                                       \
827         pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
828 #define fb_notice(info, fmt, ...)                                       \
829         pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
830 #define fb_warn(fb_info, fmt, ...)                                      \
831         pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
832 #define fb_info(fb_info, fmt, ...)                                      \
833         pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
834 #define fb_dbg(fb_info, fmt, ...)                                       \
835         pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
836 
837 #endif /* _LINUX_FB_H */
838 

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