4 #include <linux/kgdb.h>
5 #include <uapi/linux/fb.h>
7 #define FBIO_CURSOR _IOWR('F', 0x08, struct fb_cursor_user)
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>
18 struct vm_area_struct;
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
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
36 #define FB_DISP_MONO 32
37 #define FB_DISP_RGB 64
38 #define FB_DISP_MULTI 128
39 #define FB_DISP_UNKNOWN 256
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
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
52 __u32 redx; /* in fraction of 1024 */
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) */
93 __u32 start; /* First entry */
94 __u32 len; /* Number of entries */
95 __u16 __user *red; /* Red values */
98 __u16 __user *transp; /* transparency, can be NULL */
101 struct fb_image_user {
102 __u32 dx; /* Where to place image */
104 __u32 width; /* Size of image */
106 __u32 fg_color; /* Only used when a mono bitmap */
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 */
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 */
123 * Register/unregister for framebuffer events
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
131 #define FB_EVENT_SUSPEND 0x02
132 /* The display on this fb_info was resumed, you can restore the display
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
167 struct fb_info *info;
171 struct fb_blit_caps {
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);
183 static inline int fb_register_client(struct notifier_block *nb)
188 static inline int fb_unregister_client(struct notifier_block *nb)
193 static inline int fb_notifier_call_chain(unsigned long val, void *v)
200 * Pixmap structure definition
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.
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 */
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)*/
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);
229 #ifdef CONFIG_FB_DEFERRED_IO
230 struct fb_deferred_io {
231 /* delay between mkwrite and deferred handler */
233 struct mutex lock; /* mutex that protects the page list */
234 struct list_head pagelist; /* list of touched pages */
236 void (*first_io)(struct fb_info *info);
237 void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
242 * Frame buffer operations
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.
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.
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);
261 /* For framebuffers with strange non linear layouts or that do not
262 * work with normal memory mapped access
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);
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);
273 /* set the video mode according to info->var */
274 int (*fb_set_par)(struct fb_info *info);
276 /* set color register */
277 int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
278 unsigned blue, unsigned transp, struct fb_info *info);
280 /* set color registers in batch */
281 int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
284 int (*fb_blank)(int blank, struct fb_info *info);
287 int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
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);
297 int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
299 /* wait for blit idle, optional */
300 int (*fb_sync)(struct fb_info *info);
302 /* perform fb specific ioctl (optional) */
303 int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
306 /* Handle 32bit compat ioctl (optional) */
307 int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
310 /* perform fb specific mmap */
311 int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
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);
317 /* teardown any resources to do with this framebuffer */
318 void (*fb_destroy)(struct fb_info *info);
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);
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
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 */
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 */
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 */
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 */
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 */
383 /* set tile characteristics */
384 void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
386 /* all dimensions from hereon are in terms of tiles */
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);
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);
400 #endif /* CONFIG_FB_TILEBLITTING */
402 /* FBINFO_* = fb_info.flags bit flags */
403 #define FBINFO_DEFAULT 0
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 */
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 */
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.
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 */
430 #define FBINFO_MISC_USEREVENT 0x10000 /* event request
432 #define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */
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.
444 #define FBINFO_MISC_ALWAYS_SETPAR 0x40000
446 /* where the fb is a firmware driver, and can be replaced with a proper one */
447 #define FBINFO_MISC_FIRMWARE 0x80000
449 * Host and GPU endianness differ.
451 #define FBINFO_FOREIGN_ENDIAN 0x100000
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.
457 #define FBINFO_BE_MATH 0x100000
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
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 */
479 #ifdef CONFIG_FB_BACKLIGHT
480 /* assigned backlight device */
481 /* set before framebuffer registration,
482 remove after unregister */
483 struct backlight_device *bl_dev;
485 /* Backlight level curve */
486 struct mutex bl_curve_mutex;
487 u8 bl_curve[FB_BACKLIGHT_LEVELS];
489 #ifdef CONFIG_FB_DEFERRED_IO
490 struct delayed_work deferred_work;
491 struct fb_deferred_io *fbdefio;
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 */
502 char __iomem *screen_base; /* Virtual address */
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 */
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 {
519 resource_size_t base;
520 resource_size_t size;
524 bool skip_vt_switch; /* no VT switch on suspend/resume required */
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);
536 #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT
539 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
540 * when it wants to turn the acceleration engine on. This is
541 * really a separate operation, and should be modified via sysfs.
542 * But for now, we leave it broken with the following define
544 #define STUPID_ACCELF_TEXT_SHIT
547 #if defined(__sparc__)
549 /* We map all of our framebuffers such that big-endian accesses
550 * are what we want, so the following is sufficient.
554 #define fb_readb sbus_readb
555 #define fb_readw sbus_readw
556 #define fb_readl sbus_readl
557 #define fb_readq sbus_readq
558 #define fb_writeb sbus_writeb
559 #define fb_writew sbus_writew
560 #define fb_writel sbus_writel
561 #define fb_writeq sbus_writeq
562 #define fb_memset sbus_memset_io
563 #define fb_memcpy_fromfb sbus_memcpy_fromio
564 #define fb_memcpy_tofb sbus_memcpy_toio
566 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
568 #define fb_readb __raw_readb
569 #define fb_readw __raw_readw
570 #define fb_readl __raw_readl
571 #define fb_readq __raw_readq
572 #define fb_writeb __raw_writeb
573 #define fb_writew __raw_writew
574 #define fb_writel __raw_writel
575 #define fb_writeq __raw_writeq
576 #define fb_memset memset_io
577 #define fb_memcpy_fromfb memcpy_fromio
578 #define fb_memcpy_tofb memcpy_toio
582 #define fb_readb(addr) (*(volatile u8 *) (addr))
583 #define fb_readw(addr) (*(volatile u16 *) (addr))
584 #define fb_readl(addr) (*(volatile u32 *) (addr))
585 #define fb_readq(addr) (*(volatile u64 *) (addr))
586 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
587 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
588 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
589 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
590 #define fb_memset memset
591 #define fb_memcpy_fromfb memcpy
592 #define fb_memcpy_tofb memcpy
596 #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0)
597 #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \
599 #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \
603 * `Generic' versions of the frame buffer device operations
606 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
607 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
608 extern int fb_blank(struct fb_info *info, int blank);
609 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
610 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
611 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
613 * Drawing operations where framebuffer is in system RAM
615 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
616 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
617 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
618 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
619 size_t count, loff_t *ppos);
620 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
621 size_t count, loff_t *ppos);
623 /* drivers/video/fbmem.c */
624 extern int register_framebuffer(struct fb_info *fb_info);
625 extern int unregister_framebuffer(struct fb_info *fb_info);
626 extern int unlink_framebuffer(struct fb_info *fb_info);
627 extern int remove_conflicting_framebuffers(struct apertures_struct *a,
628 const char *name, bool primary);
629 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
630 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
631 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
632 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
633 u32 height, u32 shift_high, u32 shift_low, u32 mod);
634 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
635 extern void fb_set_suspend(struct fb_info *info, int state);
636 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
637 struct fb_fix_screeninfo *fix);
638 extern int fb_get_options(const char *name, char **option);
639 extern int fb_new_modelist(struct fb_info *info);
641 extern struct fb_info *registered_fb[FB_MAX];
642 extern int num_registered_fb;
643 extern struct class *fb_class;
645 extern int lock_fb_info(struct fb_info *info);
647 static inline void unlock_fb_info(struct fb_info *info)
649 mutex_unlock(&info->lock);
652 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
653 u8 *src, u32 s_pitch, u32 height)
659 for (i = height; i--; ) {
660 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
661 for (j = 0; j < s_pitch; j++)
667 /* drivers/video/fb_defio.c */
668 int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma);
669 extern void fb_deferred_io_init(struct fb_info *info);
670 extern void fb_deferred_io_open(struct fb_info *info,
673 extern void fb_deferred_io_cleanup(struct fb_info *info);
674 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
675 loff_t end, int datasync);
677 static inline bool fb_be_math(struct fb_info *info)
679 #ifdef CONFIG_FB_FOREIGN_ENDIAN
680 #if defined(CONFIG_FB_BOTH_ENDIAN)
681 return info->flags & FBINFO_BE_MATH;
682 #elif defined(CONFIG_FB_BIG_ENDIAN)
684 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
686 #endif /* CONFIG_FB_BOTH_ENDIAN */
692 #endif /* __BIG_ENDIAN */
693 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
696 /* drivers/video/fbsysfs.c */
697 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
698 extern void framebuffer_release(struct fb_info *info);
699 extern int fb_init_device(struct fb_info *fb_info);
700 extern void fb_cleanup_device(struct fb_info *head);
701 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
703 /* drivers/video/fbmon.c */
704 #define FB_MAXTIMINGS 0
705 #define FB_VSYNCTIMINGS 1
706 #define FB_HSYNCTIMINGS 2
707 #define FB_DCLKTIMINGS 3
708 #define FB_IGNOREMON 0x100
710 #define FB_MODE_IS_UNKNOWN 0
711 #define FB_MODE_IS_DETAILED 1
712 #define FB_MODE_IS_STANDARD 2
713 #define FB_MODE_IS_VESA 4
714 #define FB_MODE_IS_CALCULATED 8
715 #define FB_MODE_IS_FIRST 16
716 #define FB_MODE_IS_FROM_VAR 32
718 extern int fbmon_dpms(const struct fb_info *fb_info);
719 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
720 struct fb_info *info);
721 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
722 struct fb_info *info);
723 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
724 extern const unsigned char *fb_firmware_edid(struct device *device);
725 extern void fb_edid_to_monspecs(unsigned char *edid,
726 struct fb_monspecs *specs);
727 extern void fb_edid_add_monspecs(unsigned char *edid,
728 struct fb_monspecs *specs);
729 extern void fb_destroy_modedb(struct fb_videomode *modedb);
730 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
731 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
733 extern int of_get_fb_videomode(struct device_node *np,
734 struct fb_videomode *fb,
736 extern int fb_videomode_from_videomode(const struct videomode *vm,
737 struct fb_videomode *fbmode);
739 /* drivers/video/modedb.c */
740 #define VESA_MODEDB_SIZE 43
741 #define DMT_SIZE 0x50
743 extern void fb_var_to_videomode(struct fb_videomode *mode,
744 const struct fb_var_screeninfo *var);
745 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
746 const struct fb_videomode *mode);
747 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
748 const struct fb_videomode *mode2);
749 extern int fb_add_videomode(const struct fb_videomode *mode,
750 struct list_head *head);
751 extern void fb_delete_videomode(const struct fb_videomode *mode,
752 struct list_head *head);
753 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
754 struct list_head *head);
755 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
756 struct list_head *head);
757 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
758 struct list_head *head);
759 extern void fb_destroy_modelist(struct list_head *head);
760 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
761 struct list_head *head);
762 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
763 struct list_head *head);
765 /* drivers/video/fbcmap.c */
766 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
767 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
768 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
769 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
770 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
771 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
772 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
773 extern const struct fb_cmap *fb_default_cmap(int len);
774 extern void fb_invert_cmaps(void);
776 struct fb_videomode {
777 const char *name; /* optional */
778 u32 refresh; /* optional */
793 struct dmt_videomode {
797 const struct fb_videomode *mode;
800 extern const char *fb_mode_option;
801 extern const struct fb_videomode vesa_modes[];
802 extern const struct fb_videomode cea_modes[65];
803 extern const struct dmt_videomode dmt_modes[];
806 struct list_head list;
807 struct fb_videomode mode;
810 extern int fb_find_mode(struct fb_var_screeninfo *var,
811 struct fb_info *info, const char *mode_option,
812 const struct fb_videomode *db,
814 const struct fb_videomode *default_mode,
815 unsigned int default_bpp);
817 /* Convenience logging macros */
818 #define fb_err(fb_info, fmt, ...) \
819 pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
820 #define fb_notice(info, fmt, ...) \
821 pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
822 #define fb_warn(fb_info, fmt, ...) \
823 pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
824 #define fb_info(fb_info, fmt, ...) \
825 pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
826 #define fb_dbg(fb_info, fmt, ...) \
827 pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
829 #endif /* _LINUX_FB_H */