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
;
23 /* Definitions below are used in the parsed monitor specs */
24 #define FB_DPMS_ACTIVE_OFF 1
25 #define FB_DPMS_SUSPEND 2
26 #define FB_DPMS_STANDBY 4
29 #define FB_DISP_ANA_700_300 2
30 #define FB_DISP_ANA_714_286 4
31 #define FB_DISP_ANA_1000_400 8
32 #define FB_DISP_ANA_700_000 16
34 #define FB_DISP_MONO 32
35 #define FB_DISP_RGB 64
36 #define FB_DISP_MULTI 128
37 #define FB_DISP_UNKNOWN 256
39 #define FB_SIGNAL_NONE 0
40 #define FB_SIGNAL_BLANK_BLANK 1
41 #define FB_SIGNAL_SEPARATE 2
42 #define FB_SIGNAL_COMPOSITE 4
43 #define FB_SIGNAL_SYNC_ON_GREEN 8
44 #define FB_SIGNAL_SERRATION_ON 16
46 #define FB_MISC_PRIM_COLOR 1
47 #define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */
49 __u32 redx
; /* in fraction of 1024 */
60 struct fb_chroma chroma
;
61 struct fb_videomode
*modedb
; /* mode database */
62 __u8 manufacturer
[4]; /* Manufacturer */
63 __u8 monitor
[14]; /* Monitor String */
64 __u8 serial_no
[14]; /* Serial Number */
65 __u8 ascii
[14]; /* ? */
66 __u32 modedb_len
; /* mode database length */
67 __u32 model
; /* Monitor Model */
68 __u32 serial
; /* Serial Number - Integer */
69 __u32 year
; /* Year manufactured */
70 __u32 week
; /* Week Manufactured */
71 __u32 hfmin
; /* hfreq lower limit (Hz) */
72 __u32 hfmax
; /* hfreq upper limit (Hz) */
73 __u32 dclkmin
; /* pixelclock lower limit (Hz) */
74 __u32 dclkmax
; /* pixelclock upper limit (Hz) */
75 __u16 input
; /* display type - see FB_DISP_* */
76 __u16 dpms
; /* DPMS support - see FB_DPMS_ */
77 __u16 signal
; /* Signal Type - see FB_SIGNAL_* */
78 __u16 vfmin
; /* vfreq lower limit (Hz) */
79 __u16 vfmax
; /* vfreq upper limit (Hz) */
80 __u16 gamma
; /* Gamma - in fractions of 100 */
81 __u16 gtf
: 1; /* supports GTF */
82 __u16 misc
; /* Misc flags - see FB_MISC_* */
83 __u8 version
; /* EDID version... */
84 __u8 revision
; /* ...and revision */
85 __u8 max_x
; /* Maximum horizontal size (cm) */
86 __u8 max_y
; /* Maximum vertical size (cm) */
90 __u32 start
; /* First entry */
91 __u32 len
; /* Number of entries */
92 __u16 __user
*red
; /* Red values */
95 __u16 __user
*transp
; /* transparency, can be NULL */
98 struct fb_image_user
{
99 __u32 dx
; /* Where to place image */
101 __u32 width
; /* Size of image */
103 __u32 fg_color
; /* Only used when a mono bitmap */
105 __u8 depth
; /* Depth of the image */
106 const char __user
*data
; /* Pointer to image data */
107 struct fb_cmap_user cmap
; /* color map info */
110 struct fb_cursor_user
{
111 __u16 set
; /* what to set */
112 __u16 enable
; /* cursor on/off */
113 __u16 rop
; /* bitop operation */
114 const char __user
*mask
; /* cursor mask bits */
115 struct fbcurpos hot
; /* cursor hot spot */
116 struct fb_image_user image
; /* Cursor image */
120 * Register/unregister for framebuffer events
123 /* The resolution of the passed in fb_info about to change */
124 #define FB_EVENT_MODE_CHANGE 0x01
125 /* The display on this fb_info is beeing suspended, no access to the
126 * framebuffer is allowed any more after that call returns
128 #define FB_EVENT_SUSPEND 0x02
129 /* The display on this fb_info was resumed, you can restore the display
132 #define FB_EVENT_RESUME 0x03
133 /* An entry from the modelist was removed */
134 #define FB_EVENT_MODE_DELETE 0x04
135 /* A driver registered itself */
136 #define FB_EVENT_FB_REGISTERED 0x05
137 /* A driver unregistered itself */
138 #define FB_EVENT_FB_UNREGISTERED 0x06
139 /* CONSOLE-SPECIFIC: get console to framebuffer mapping */
140 #define FB_EVENT_GET_CONSOLE_MAP 0x07
141 /* CONSOLE-SPECIFIC: set console to framebuffer mapping */
142 #define FB_EVENT_SET_CONSOLE_MAP 0x08
143 /* A hardware display blank change occurred */
144 #define FB_EVENT_BLANK 0x09
145 /* Private modelist is to be replaced */
146 #define FB_EVENT_NEW_MODELIST 0x0A
147 /* The resolution of the passed in fb_info about to change and
148 all vc's should be changed */
149 #define FB_EVENT_MODE_CHANGE_ALL 0x0B
150 /* A software display blank change occurred */
151 #define FB_EVENT_CONBLANK 0x0C
152 /* Get drawing requirements */
153 #define FB_EVENT_GET_REQ 0x0D
154 /* Unbind from the console if possible */
155 #define FB_EVENT_FB_UNBIND 0x0E
156 /* CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
157 #define FB_EVENT_REMAP_ALL_CONSOLE 0x0F
158 /* A hardware display blank early change occured */
159 #define FB_EARLY_EVENT_BLANK 0x10
160 /* A hardware display blank revert early change occured */
161 #define FB_R_EARLY_EVENT_BLANK 0x11
164 struct fb_info
*info
;
168 struct fb_blit_caps
{
175 extern int fb_register_client(struct notifier_block
*nb
);
176 extern int fb_unregister_client(struct notifier_block
*nb
);
177 extern int fb_notifier_call_chain(unsigned long val
, void *v
);
179 * Pixmap structure definition
181 * The purpose of this structure is to translate data
182 * from the hardware independent format of fbdev to what
183 * format the hardware needs.
186 #define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */
187 #define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */
188 #define FB_PIXMAP_IO 4 /* memory is iomapped */
189 #define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */
192 u8
*addr
; /* pointer to memory */
193 u32 size
; /* size of buffer in bytes */
194 u32 offset
; /* current offset to buffer */
195 u32 buf_align
; /* byte alignment of each bitmap */
196 u32 scan_align
; /* alignment per scanline */
197 u32 access_align
; /* alignment per read/write (bits) */
198 u32 flags
; /* see FB_PIXMAP_* */
199 u32 blit_x
; /* supported bit block dimensions (1-32)*/
200 u32 blit_y
; /* Format: blit_x = 1 << (width - 1) */
201 /* blit_y = 1 << (height - 1) */
202 /* if 0, will be set to 0xffffffff (all)*/
204 void (*writeio
)(struct fb_info
*info
, void __iomem
*dst
, void *src
, unsigned int size
);
205 void (*readio
) (struct fb_info
*info
, void *dst
, void __iomem
*src
, unsigned int size
);
208 #ifdef CONFIG_FB_DEFERRED_IO
209 struct fb_deferred_io
{
210 /* delay between mkwrite and deferred handler */
212 struct mutex lock
; /* mutex that protects the page list */
213 struct list_head pagelist
; /* list of touched pages */
215 void (*first_io
)(struct fb_info
*info
);
216 void (*deferred_io
)(struct fb_info
*info
, struct list_head
*pagelist
);
221 * Frame buffer operations
223 * LOCKING NOTE: those functions must _ALL_ be called with the console
224 * semaphore held, this is the only suitable locking mechanism we have
225 * in 2.6. Some may be called at interrupt time at this point though.
227 * The exception to this is the debug related hooks. Putting the fb
228 * into a debug state (e.g. flipping to the kernel console) and restoring
229 * it must be done in a lock-free manner, so low level drivers should
230 * keep track of the initial console (if applicable) and may need to
231 * perform direct, unlocked hardware writes in these hooks.
235 /* open/release and usage marking */
236 struct module
*owner
;
237 int (*fb_open
)(struct fb_info
*info
, int user
);
238 int (*fb_release
)(struct fb_info
*info
, int user
);
240 /* For framebuffers with strange non linear layouts or that do not
241 * work with normal memory mapped access
243 ssize_t (*fb_read
)(struct fb_info
*info
, char __user
*buf
,
244 size_t count
, loff_t
*ppos
);
245 ssize_t (*fb_write
)(struct fb_info
*info
, const char __user
*buf
,
246 size_t count
, loff_t
*ppos
);
248 /* checks var and eventually tweaks it to something supported,
249 * DO NOT MODIFY PAR */
250 int (*fb_check_var
)(struct fb_var_screeninfo
*var
, struct fb_info
*info
);
252 /* set the video mode according to info->var */
253 int (*fb_set_par
)(struct fb_info
*info
);
255 /* set color register */
256 int (*fb_setcolreg
)(unsigned regno
, unsigned red
, unsigned green
,
257 unsigned blue
, unsigned transp
, struct fb_info
*info
);
259 /* set color registers in batch */
260 int (*fb_setcmap
)(struct fb_cmap
*cmap
, struct fb_info
*info
);
263 int (*fb_blank
)(int blank
, struct fb_info
*info
);
266 int (*fb_pan_display
)(struct fb_var_screeninfo
*var
, struct fb_info
*info
);
268 /* Draws a rectangle */
269 void (*fb_fillrect
) (struct fb_info
*info
, const struct fb_fillrect
*rect
);
270 /* Copy data from area to another */
271 void (*fb_copyarea
) (struct fb_info
*info
, const struct fb_copyarea
*region
);
272 /* Draws a image to the display */
273 void (*fb_imageblit
) (struct fb_info
*info
, const struct fb_image
*image
);
276 int (*fb_cursor
) (struct fb_info
*info
, struct fb_cursor
*cursor
);
278 /* Rotates the display */
279 void (*fb_rotate
)(struct fb_info
*info
, int angle
);
281 /* wait for blit idle, optional */
282 int (*fb_sync
)(struct fb_info
*info
);
284 /* perform fb specific ioctl (optional) */
285 int (*fb_ioctl
)(struct fb_info
*info
, unsigned int cmd
,
288 /* Handle 32bit compat ioctl (optional) */
289 int (*fb_compat_ioctl
)(struct fb_info
*info
, unsigned cmd
,
292 /* perform fb specific mmap */
293 int (*fb_mmap
)(struct fb_info
*info
, struct vm_area_struct
*vma
);
295 /* get capability given var */
296 void (*fb_get_caps
)(struct fb_info
*info
, struct fb_blit_caps
*caps
,
297 struct fb_var_screeninfo
*var
);
299 /* teardown any resources to do with this framebuffer */
300 void (*fb_destroy
)(struct fb_info
*info
);
302 /* called at KDB enter and leave time to prepare the console */
303 int (*fb_debug_enter
)(struct fb_info
*info
);
304 int (*fb_debug_leave
)(struct fb_info
*info
);
307 #ifdef CONFIG_FB_TILEBLITTING
308 #define FB_TILE_CURSOR_NONE 0
309 #define FB_TILE_CURSOR_UNDERLINE 1
310 #define FB_TILE_CURSOR_LOWER_THIRD 2
311 #define FB_TILE_CURSOR_LOWER_HALF 3
312 #define FB_TILE_CURSOR_TWO_THIRDS 4
313 #define FB_TILE_CURSOR_BLOCK 5
316 __u32 width
; /* width of each tile in pixels */
317 __u32 height
; /* height of each tile in scanlines */
318 __u32 depth
; /* color depth of each tile */
319 __u32 length
; /* number of tiles in the map */
320 const __u8
*data
; /* actual tile map: a bitmap array, packed
321 to the nearest byte */
325 __u32 sx
; /* origin in the x-axis */
326 __u32 sy
; /* origin in the y-axis */
327 __u32 width
; /* number of tiles in the x-axis */
328 __u32 height
; /* number of tiles in the y-axis */
329 __u32 index
; /* what tile to use: index to tile map */
330 __u32 fg
; /* foreground color */
331 __u32 bg
; /* background color */
332 __u32 rop
; /* raster operation */
336 __u32 sx
; /* source origin in the x-axis */
337 __u32 sy
; /* source origin in the y-axis */
338 __u32 dx
; /* destination origin in the x-axis */
339 __u32 dy
; /* destination origin in the y-axis */
340 __u32 width
; /* number of tiles in the x-axis */
341 __u32 height
; /* number of tiles in the y-axis */
345 __u32 sx
; /* origin in the x-axis */
346 __u32 sy
; /* origin in the y-axis */
347 __u32 width
; /* number of tiles in the x-axis */
348 __u32 height
; /* number of tiles in the y-axis */
349 __u32 fg
; /* foreground color */
350 __u32 bg
; /* background color */
351 __u32 length
; /* number of tiles to draw */
352 __u32
*indices
; /* array of indices to tile map */
355 struct fb_tilecursor
{
356 __u32 sx
; /* cursor position in the x-axis */
357 __u32 sy
; /* cursor position in the y-axis */
358 __u32 mode
; /* 0 = erase, 1 = draw */
359 __u32 shape
; /* see FB_TILE_CURSOR_* */
360 __u32 fg
; /* foreground color */
361 __u32 bg
; /* background color */
365 /* set tile characteristics */
366 void (*fb_settile
)(struct fb_info
*info
, struct fb_tilemap
*map
);
368 /* all dimensions from hereon are in terms of tiles */
370 /* move a rectangular region of tiles from one area to another*/
371 void (*fb_tilecopy
)(struct fb_info
*info
, struct fb_tilearea
*area
);
372 /* fill a rectangular region with a tile */
373 void (*fb_tilefill
)(struct fb_info
*info
, struct fb_tilerect
*rect
);
374 /* copy an array of tiles */
375 void (*fb_tileblit
)(struct fb_info
*info
, struct fb_tileblit
*blit
);
377 void (*fb_tilecursor
)(struct fb_info
*info
,
378 struct fb_tilecursor
*cursor
);
379 /* get maximum length of the tile map */
380 int (*fb_get_tilemax
)(struct fb_info
*info
);
382 #endif /* CONFIG_FB_TILEBLITTING */
384 /* FBINFO_* = fb_info.flags bit flags */
385 #define FBINFO_MODULE 0x0001 /* Low-level driver is a module */
386 #define FBINFO_HWACCEL_DISABLED 0x0002
387 /* When FBINFO_HWACCEL_DISABLED is set:
388 * Hardware acceleration is turned off. Software implementations
389 * of required functions (copyarea(), fillrect(), and imageblit())
390 * takes over; acceleration engine should be in a quiescent state */
393 #define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */
394 #define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */
395 #define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */
397 /* hardware supported ops */
398 /* semantics: when a bit is set, it indicates that the operation is
399 * accelerated by hardware.
400 * required functions will still work even if the bit is not set.
401 * optional functions may not even exist if the flag bit is not set.
403 #define FBINFO_HWACCEL_NONE 0x0000
404 #define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */
405 #define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */
406 #define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */
407 #define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */
408 #define FBINFO_HWACCEL_XPAN 0x1000 /* optional */
409 #define FBINFO_HWACCEL_YPAN 0x2000 /* optional */
410 #define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */
412 #define FBINFO_MISC_USEREVENT 0x10000 /* event request
414 #define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */
416 /* A driver may set this flag to indicate that it does want a set_par to be
417 * called every time when fbcon_switch is executed. The advantage is that with
418 * this flag set you can really be sure that set_par is always called before
419 * any of the functions dependent on the correct hardware state or altering
420 * that state, even if you are using some broken X releases. The disadvantage
421 * is that it introduces unwanted delays to every console switch if set_par
422 * is slow. It is a good idea to try this flag in the drivers initialization
423 * code whenever there is a bug report related to switching between X and the
424 * framebuffer console.
426 #define FBINFO_MISC_ALWAYS_SETPAR 0x40000
428 /* where the fb is a firmware driver, and can be replaced with a proper one */
429 #define FBINFO_MISC_FIRMWARE 0x80000
431 * Host and GPU endianness differ.
433 #define FBINFO_FOREIGN_ENDIAN 0x100000
435 * Big endian math. This is the same flags as above, but with different
436 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
437 * and host endianness. Drivers should not use this flag.
439 #define FBINFO_BE_MATH 0x100000
441 /* report to the VT layer that this fb driver can accept forced console
442 output like oopses */
443 #define FBINFO_CAN_FORCE_OUTPUT 0x200000
449 struct mutex lock
; /* Lock for open/release/ioctl funcs */
450 struct mutex mm_lock
; /* Lock for fb_mmap and smem_* fields */
451 struct fb_var_screeninfo var
; /* Current var */
452 struct fb_fix_screeninfo fix
; /* Current fix */
453 struct fb_monspecs monspecs
; /* Current Monitor specs */
454 struct work_struct queue
; /* Framebuffer event queue */
455 struct fb_pixmap pixmap
; /* Image hardware mapper */
456 struct fb_pixmap sprite
; /* Cursor hardware mapper */
457 struct fb_cmap cmap
; /* Current cmap */
458 struct list_head modelist
; /* mode list */
459 struct fb_videomode
*mode
; /* current mode */
461 #ifdef CONFIG_FB_BACKLIGHT
462 /* assigned backlight device */
463 /* set before framebuffer registration,
464 remove after unregister */
465 struct backlight_device
*bl_dev
;
467 /* Backlight level curve */
468 struct mutex bl_curve_mutex
;
469 u8 bl_curve
[FB_BACKLIGHT_LEVELS
];
471 #ifdef CONFIG_FB_DEFERRED_IO
472 struct delayed_work deferred_work
;
473 struct fb_deferred_io
*fbdefio
;
476 struct fb_ops
*fbops
;
477 struct device
*device
; /* This is the parent */
478 struct device
*dev
; /* This is this fb device */
479 int class_flag
; /* private sysfs flags */
480 #ifdef CONFIG_FB_TILEBLITTING
481 struct fb_tile_ops
*tileops
; /* Tile Blitting */
483 char __iomem
*screen_base
; /* Virtual address */
484 unsigned long screen_size
; /* Amount of ioremapped VRAM or 0 */
485 void *pseudo_palette
; /* Fake palette of 16 colors */
486 #define FBINFO_STATE_RUNNING 0
487 #define FBINFO_STATE_SUSPENDED 1
488 u32 state
; /* Hardware state i.e suspend */
489 void *fbcon_par
; /* fbcon use-only private area */
490 /* From here on everything is device dependent */
492 /* we need the PCI or similar aperture base/size not
493 smem_start/size as smem_start may just be an object
494 allocated inside the aperture so may not actually overlap */
495 struct apertures_struct
{
498 resource_size_t base
;
499 resource_size_t size
;
504 static inline struct apertures_struct
*alloc_apertures(unsigned int max_num
) {
505 struct apertures_struct
*a
= kzalloc(sizeof(struct apertures_struct
)
506 + max_num
* sizeof(struct aperture
), GFP_KERNEL
);
514 #define FBINFO_DEFAULT FBINFO_MODULE
516 #define FBINFO_DEFAULT 0
520 #define FBINFO_FLAG_MODULE FBINFO_MODULE
521 #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT
524 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
525 * when it wants to turn the acceleration engine on. This is
526 * really a separate operation, and should be modified via sysfs.
527 * But for now, we leave it broken with the following define
529 #define STUPID_ACCELF_TEXT_SHIT
532 #if defined(__sparc__)
534 /* We map all of our framebuffers such that big-endian accesses
535 * are what we want, so the following is sufficient.
539 #define fb_readb sbus_readb
540 #define fb_readw sbus_readw
541 #define fb_readl sbus_readl
542 #define fb_readq sbus_readq
543 #define fb_writeb sbus_writeb
544 #define fb_writew sbus_writew
545 #define fb_writel sbus_writel
546 #define fb_writeq sbus_writeq
547 #define fb_memset sbus_memset_io
548 #define fb_memcpy_fromfb sbus_memcpy_fromio
549 #define fb_memcpy_tofb sbus_memcpy_toio
551 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
553 #define fb_readb __raw_readb
554 #define fb_readw __raw_readw
555 #define fb_readl __raw_readl
556 #define fb_readq __raw_readq
557 #define fb_writeb __raw_writeb
558 #define fb_writew __raw_writew
559 #define fb_writel __raw_writel
560 #define fb_writeq __raw_writeq
561 #define fb_memset memset_io
562 #define fb_memcpy_fromfb memcpy_fromio
563 #define fb_memcpy_tofb memcpy_toio
567 #define fb_readb(addr) (*(volatile u8 *) (addr))
568 #define fb_readw(addr) (*(volatile u16 *) (addr))
569 #define fb_readl(addr) (*(volatile u32 *) (addr))
570 #define fb_readq(addr) (*(volatile u64 *) (addr))
571 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
572 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
573 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
574 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
575 #define fb_memset memset
576 #define fb_memcpy_fromfb memcpy
577 #define fb_memcpy_tofb memcpy
581 #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0)
582 #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \
584 #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \
588 * `Generic' versions of the frame buffer device operations
591 extern int fb_set_var(struct fb_info
*info
, struct fb_var_screeninfo
*var
);
592 extern int fb_pan_display(struct fb_info
*info
, struct fb_var_screeninfo
*var
);
593 extern int fb_blank(struct fb_info
*info
, int blank
);
594 extern void cfb_fillrect(struct fb_info
*info
, const struct fb_fillrect
*rect
);
595 extern void cfb_copyarea(struct fb_info
*info
, const struct fb_copyarea
*area
);
596 extern void cfb_imageblit(struct fb_info
*info
, const struct fb_image
*image
);
598 * Drawing operations where framebuffer is in system RAM
600 extern void sys_fillrect(struct fb_info
*info
, const struct fb_fillrect
*rect
);
601 extern void sys_copyarea(struct fb_info
*info
, const struct fb_copyarea
*area
);
602 extern void sys_imageblit(struct fb_info
*info
, const struct fb_image
*image
);
603 extern ssize_t
fb_sys_read(struct fb_info
*info
, char __user
*buf
,
604 size_t count
, loff_t
*ppos
);
605 extern ssize_t
fb_sys_write(struct fb_info
*info
, const char __user
*buf
,
606 size_t count
, loff_t
*ppos
);
608 /* drivers/video/fbmem.c */
609 extern int register_framebuffer(struct fb_info
*fb_info
);
610 extern int unregister_framebuffer(struct fb_info
*fb_info
);
611 extern int unlink_framebuffer(struct fb_info
*fb_info
);
612 extern void remove_conflicting_framebuffers(struct apertures_struct
*a
,
613 const char *name
, bool primary
);
614 extern int fb_prepare_logo(struct fb_info
*fb_info
, int rotate
);
615 extern int fb_show_logo(struct fb_info
*fb_info
, int rotate
);
616 extern char* fb_get_buffer_offset(struct fb_info
*info
, struct fb_pixmap
*buf
, u32 size
);
617 extern void fb_pad_unaligned_buffer(u8
*dst
, u32 d_pitch
, u8
*src
, u32 idx
,
618 u32 height
, u32 shift_high
, u32 shift_low
, u32 mod
);
619 extern void fb_pad_aligned_buffer(u8
*dst
, u32 d_pitch
, u8
*src
, u32 s_pitch
, u32 height
);
620 extern void fb_set_suspend(struct fb_info
*info
, int state
);
621 extern int fb_get_color_depth(struct fb_var_screeninfo
*var
,
622 struct fb_fix_screeninfo
*fix
);
623 extern int fb_get_options(char *name
, char **option
);
624 extern int fb_new_modelist(struct fb_info
*info
);
626 extern struct fb_info
*registered_fb
[FB_MAX
];
627 extern int num_registered_fb
;
628 extern struct class *fb_class
;
630 extern int lock_fb_info(struct fb_info
*info
);
632 static inline void unlock_fb_info(struct fb_info
*info
)
634 mutex_unlock(&info
->lock
);
637 static inline void __fb_pad_aligned_buffer(u8
*dst
, u32 d_pitch
,
638 u8
*src
, u32 s_pitch
, u32 height
)
644 for (i
= height
; i
--; ) {
645 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
646 for (j
= 0; j
< s_pitch
; j
++)
652 /* drivers/video/fb_defio.c */
653 extern void fb_deferred_io_init(struct fb_info
*info
);
654 extern void fb_deferred_io_open(struct fb_info
*info
,
657 extern void fb_deferred_io_cleanup(struct fb_info
*info
);
658 extern int fb_deferred_io_fsync(struct file
*file
, loff_t start
,
659 loff_t end
, int datasync
);
661 static inline bool fb_be_math(struct fb_info
*info
)
663 #ifdef CONFIG_FB_FOREIGN_ENDIAN
664 #if defined(CONFIG_FB_BOTH_ENDIAN)
665 return info
->flags
& FBINFO_BE_MATH
;
666 #elif defined(CONFIG_FB_BIG_ENDIAN)
668 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
670 #endif /* CONFIG_FB_BOTH_ENDIAN */
676 #endif /* __BIG_ENDIAN */
677 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
680 /* drivers/video/fbsysfs.c */
681 extern struct fb_info
*framebuffer_alloc(size_t size
, struct device
*dev
);
682 extern void framebuffer_release(struct fb_info
*info
);
683 extern int fb_init_device(struct fb_info
*fb_info
);
684 extern void fb_cleanup_device(struct fb_info
*head
);
685 extern void fb_bl_default_curve(struct fb_info
*fb_info
, u8 off
, u8 min
, u8 max
);
687 /* drivers/video/fbmon.c */
688 #define FB_MAXTIMINGS 0
689 #define FB_VSYNCTIMINGS 1
690 #define FB_HSYNCTIMINGS 2
691 #define FB_DCLKTIMINGS 3
692 #define FB_IGNOREMON 0x100
694 #define FB_MODE_IS_UNKNOWN 0
695 #define FB_MODE_IS_DETAILED 1
696 #define FB_MODE_IS_STANDARD 2
697 #define FB_MODE_IS_VESA 4
698 #define FB_MODE_IS_CALCULATED 8
699 #define FB_MODE_IS_FIRST 16
700 #define FB_MODE_IS_FROM_VAR 32
702 extern int fbmon_dpms(const struct fb_info
*fb_info
);
703 extern int fb_get_mode(int flags
, u32 val
, struct fb_var_screeninfo
*var
,
704 struct fb_info
*info
);
705 extern int fb_validate_mode(const struct fb_var_screeninfo
*var
,
706 struct fb_info
*info
);
707 extern int fb_parse_edid(unsigned char *edid
, struct fb_var_screeninfo
*var
);
708 extern const unsigned char *fb_firmware_edid(struct device
*device
);
709 extern void fb_edid_to_monspecs(unsigned char *edid
,
710 struct fb_monspecs
*specs
);
711 extern void fb_edid_add_monspecs(unsigned char *edid
,
712 struct fb_monspecs
*specs
);
713 extern void fb_destroy_modedb(struct fb_videomode
*modedb
);
714 extern int fb_find_mode_cvt(struct fb_videomode
*mode
, int margins
, int rb
);
715 extern unsigned char *fb_ddc_read(struct i2c_adapter
*adapter
);
717 /* drivers/video/modedb.c */
718 #define VESA_MODEDB_SIZE 34
719 extern void fb_var_to_videomode(struct fb_videomode
*mode
,
720 const struct fb_var_screeninfo
*var
);
721 extern void fb_videomode_to_var(struct fb_var_screeninfo
*var
,
722 const struct fb_videomode
*mode
);
723 extern int fb_mode_is_equal(const struct fb_videomode
*mode1
,
724 const struct fb_videomode
*mode2
);
725 extern int fb_add_videomode(const struct fb_videomode
*mode
,
726 struct list_head
*head
);
727 extern void fb_delete_videomode(const struct fb_videomode
*mode
,
728 struct list_head
*head
);
729 extern const struct fb_videomode
*fb_match_mode(const struct fb_var_screeninfo
*var
,
730 struct list_head
*head
);
731 extern const struct fb_videomode
*fb_find_best_mode(const struct fb_var_screeninfo
*var
,
732 struct list_head
*head
);
733 extern const struct fb_videomode
*fb_find_nearest_mode(const struct fb_videomode
*mode
,
734 struct list_head
*head
);
735 extern void fb_destroy_modelist(struct list_head
*head
);
736 extern void fb_videomode_to_modelist(const struct fb_videomode
*modedb
, int num
,
737 struct list_head
*head
);
738 extern const struct fb_videomode
*fb_find_best_display(const struct fb_monspecs
*specs
,
739 struct list_head
*head
);
741 /* drivers/video/fbcmap.c */
742 extern int fb_alloc_cmap(struct fb_cmap
*cmap
, int len
, int transp
);
743 extern int fb_alloc_cmap_gfp(struct fb_cmap
*cmap
, int len
, int transp
, gfp_t flags
);
744 extern void fb_dealloc_cmap(struct fb_cmap
*cmap
);
745 extern int fb_copy_cmap(const struct fb_cmap
*from
, struct fb_cmap
*to
);
746 extern int fb_cmap_to_user(const struct fb_cmap
*from
, struct fb_cmap_user
*to
);
747 extern int fb_set_cmap(struct fb_cmap
*cmap
, struct fb_info
*fb_info
);
748 extern int fb_set_user_cmap(struct fb_cmap_user
*cmap
, struct fb_info
*fb_info
);
749 extern const struct fb_cmap
*fb_default_cmap(int len
);
750 extern void fb_invert_cmaps(void);
752 struct fb_videomode
{
753 const char *name
; /* optional */
754 u32 refresh
; /* optional */
769 extern const char *fb_mode_option
;
770 extern const struct fb_videomode vesa_modes
[];
771 extern const struct fb_videomode cea_modes
[64];
774 struct list_head list
;
775 struct fb_videomode mode
;
778 extern int fb_find_mode(struct fb_var_screeninfo
*var
,
779 struct fb_info
*info
, const char *mode_option
,
780 const struct fb_videomode
*db
,
782 const struct fb_videomode
*default_mode
,
783 unsigned int default_bpp
);
785 #endif /* _LINUX_FB_H */