1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/kgdb.h>
6 #include <uapi/linux/fb.h>
8 #define FBIO_CURSOR _IOWR('F', 0x08, struct fb_cursor_user)
11 #include <linux/init.h>
12 #include <linux/workqueue.h>
13 #include <linux/notifier.h>
14 #include <linux/list.h>
15 #include <linux/backlight.h>
16 #include <linux/slab.h>
19 struct vm_area_struct
;
26 /* Definitions below are used in the parsed monitor specs */
27 #define FB_DPMS_ACTIVE_OFF 1
28 #define FB_DPMS_SUSPEND 2
29 #define FB_DPMS_STANDBY 4
32 #define FB_DISP_ANA_700_300 2
33 #define FB_DISP_ANA_714_286 4
34 #define FB_DISP_ANA_1000_400 8
35 #define FB_DISP_ANA_700_000 16
37 #define FB_DISP_MONO 32
38 #define FB_DISP_RGB 64
39 #define FB_DISP_MULTI 128
40 #define FB_DISP_UNKNOWN 256
42 #define FB_SIGNAL_NONE 0
43 #define FB_SIGNAL_BLANK_BLANK 1
44 #define FB_SIGNAL_SEPARATE 2
45 #define FB_SIGNAL_COMPOSITE 4
46 #define FB_SIGNAL_SYNC_ON_GREEN 8
47 #define FB_SIGNAL_SERRATION_ON 16
49 #define FB_MISC_PRIM_COLOR 1
50 #define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */
51 #define FB_MISC_HDMI 4
53 __u32 redx
; /* in fraction of 1024 */
64 struct fb_chroma chroma
;
65 struct fb_videomode
*modedb
; /* mode database */
66 __u8 manufacturer
[4]; /* Manufacturer */
67 __u8 monitor
[14]; /* Monitor String */
68 __u8 serial_no
[14]; /* Serial Number */
69 __u8 ascii
[14]; /* ? */
70 __u32 modedb_len
; /* mode database length */
71 __u32 model
; /* Monitor Model */
72 __u32 serial
; /* Serial Number - Integer */
73 __u32 year
; /* Year manufactured */
74 __u32 week
; /* Week Manufactured */
75 __u32 hfmin
; /* hfreq lower limit (Hz) */
76 __u32 hfmax
; /* hfreq upper limit (Hz) */
77 __u32 dclkmin
; /* pixelclock lower limit (Hz) */
78 __u32 dclkmax
; /* pixelclock upper limit (Hz) */
79 __u16 input
; /* display type - see FB_DISP_* */
80 __u16 dpms
; /* DPMS support - see FB_DPMS_ */
81 __u16 signal
; /* Signal Type - see FB_SIGNAL_* */
82 __u16 vfmin
; /* vfreq lower limit (Hz) */
83 __u16 vfmax
; /* vfreq upper limit (Hz) */
84 __u16 gamma
; /* Gamma - in fractions of 100 */
85 __u16 gtf
: 1; /* supports GTF */
86 __u16 misc
; /* Misc flags - see FB_MISC_* */
87 __u8 version
; /* EDID version... */
88 __u8 revision
; /* ...and revision */
89 __u8 max_x
; /* Maximum horizontal size (cm) */
90 __u8 max_y
; /* Maximum vertical size (cm) */
94 __u32 start
; /* First entry */
95 __u32 len
; /* Number of entries */
96 __u16 __user
*red
; /* Red values */
99 __u16 __user
*transp
; /* transparency, can be NULL */
102 struct fb_image_user
{
103 __u32 dx
; /* Where to place image */
105 __u32 width
; /* Size of image */
107 __u32 fg_color
; /* Only used when a mono bitmap */
109 __u8 depth
; /* Depth of the image */
110 const char __user
*data
; /* Pointer to image data */
111 struct fb_cmap_user cmap
; /* color map info */
114 struct fb_cursor_user
{
115 __u16 set
; /* what to set */
116 __u16 enable
; /* cursor on/off */
117 __u16 rop
; /* bitop operation */
118 const char __user
*mask
; /* cursor mask bits */
119 struct fbcurpos hot
; /* cursor hot spot */
120 struct fb_image_user image
; /* Cursor image */
124 * Register/unregister for framebuffer events
127 /* The resolution of the passed in fb_info about to change */
128 #define FB_EVENT_MODE_CHANGE 0x01
129 /* The display on this fb_info is beeing suspended, no access to the
130 * framebuffer is allowed any more after that call returns
132 #define FB_EVENT_SUSPEND 0x02
133 /* The display on this fb_info was resumed, you can restore the display
136 #define FB_EVENT_RESUME 0x03
137 /* An entry from the modelist was removed */
138 #define FB_EVENT_MODE_DELETE 0x04
139 /* A driver registered itself */
140 #define FB_EVENT_FB_REGISTERED 0x05
141 /* A driver unregistered itself */
142 #define FB_EVENT_FB_UNREGISTERED 0x06
143 /* CONSOLE-SPECIFIC: get console to framebuffer mapping */
144 #define FB_EVENT_GET_CONSOLE_MAP 0x07
145 /* CONSOLE-SPECIFIC: set console to framebuffer mapping */
146 #define FB_EVENT_SET_CONSOLE_MAP 0x08
147 /* A hardware display blank change occurred */
148 #define FB_EVENT_BLANK 0x09
149 /* Private modelist is to be replaced */
150 #define FB_EVENT_NEW_MODELIST 0x0A
151 /* The resolution of the passed in fb_info about to change and
152 all vc's should be changed */
153 #define FB_EVENT_MODE_CHANGE_ALL 0x0B
154 /* A software display blank change occurred */
155 #define FB_EVENT_CONBLANK 0x0C
156 /* Get drawing requirements */
157 #define FB_EVENT_GET_REQ 0x0D
158 /* Unbind from the console if possible */
159 #define FB_EVENT_FB_UNBIND 0x0E
160 /* CONSOLE-SPECIFIC: remap all consoles to new fb - for vga_switcheroo */
161 #define FB_EVENT_REMAP_ALL_CONSOLE 0x0F
162 /* A hardware display blank early change occured */
163 #define FB_EARLY_EVENT_BLANK 0x10
164 /* A hardware display blank revert early change occured */
165 #define FB_R_EARLY_EVENT_BLANK 0x11
168 struct fb_info
*info
;
172 struct fb_blit_caps
{
179 #ifdef CONFIG_FB_NOTIFY
180 extern int fb_register_client(struct notifier_block
*nb
);
181 extern int fb_unregister_client(struct notifier_block
*nb
);
182 extern int fb_notifier_call_chain(unsigned long val
, void *v
);
184 static inline int fb_register_client(struct notifier_block
*nb
)
189 static inline int fb_unregister_client(struct notifier_block
*nb
)
194 static inline int fb_notifier_call_chain(unsigned long val
, void *v
)
201 * Pixmap structure definition
203 * The purpose of this structure is to translate data
204 * from the hardware independent format of fbdev to what
205 * format the hardware needs.
208 #define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */
209 #define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */
210 #define FB_PIXMAP_IO 4 /* memory is iomapped */
211 #define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */
214 u8
*addr
; /* pointer to memory */
215 u32 size
; /* size of buffer in bytes */
216 u32 offset
; /* current offset to buffer */
217 u32 buf_align
; /* byte alignment of each bitmap */
218 u32 scan_align
; /* alignment per scanline */
219 u32 access_align
; /* alignment per read/write (bits) */
220 u32 flags
; /* see FB_PIXMAP_* */
221 u32 blit_x
; /* supported bit block dimensions (1-32)*/
222 u32 blit_y
; /* Format: blit_x = 1 << (width - 1) */
223 /* blit_y = 1 << (height - 1) */
224 /* if 0, will be set to 0xffffffff (all)*/
226 void (*writeio
)(struct fb_info
*info
, void __iomem
*dst
, void *src
, unsigned int size
);
227 void (*readio
) (struct fb_info
*info
, void *dst
, void __iomem
*src
, unsigned int size
);
230 #ifdef CONFIG_FB_DEFERRED_IO
231 struct fb_deferred_io
{
232 /* delay between mkwrite and deferred handler */
234 struct mutex lock
; /* mutex that protects the page list */
235 struct list_head pagelist
; /* list of touched pages */
237 void (*first_io
)(struct fb_info
*info
);
238 void (*deferred_io
)(struct fb_info
*info
, struct list_head
*pagelist
);
243 * Frame buffer operations
245 * LOCKING NOTE: those functions must _ALL_ be called with the console
246 * semaphore held, this is the only suitable locking mechanism we have
247 * in 2.6. Some may be called at interrupt time at this point though.
249 * The exception to this is the debug related hooks. Putting the fb
250 * into a debug state (e.g. flipping to the kernel console) and restoring
251 * it must be done in a lock-free manner, so low level drivers should
252 * keep track of the initial console (if applicable) and may need to
253 * perform direct, unlocked hardware writes in these hooks.
257 /* open/release and usage marking */
258 struct module
*owner
;
259 int (*fb_open
)(struct fb_info
*info
, int user
);
260 int (*fb_release
)(struct fb_info
*info
, int user
);
262 /* For framebuffers with strange non linear layouts or that do not
263 * work with normal memory mapped access
265 ssize_t (*fb_read
)(struct fb_info
*info
, char __user
*buf
,
266 size_t count
, loff_t
*ppos
);
267 ssize_t (*fb_write
)(struct fb_info
*info
, const char __user
*buf
,
268 size_t count
, loff_t
*ppos
);
270 /* checks var and eventually tweaks it to something supported,
271 * DO NOT MODIFY PAR */
272 int (*fb_check_var
)(struct fb_var_screeninfo
*var
, struct fb_info
*info
);
274 /* set the video mode according to info->var */
275 int (*fb_set_par
)(struct fb_info
*info
);
277 /* set color register */
278 int (*fb_setcolreg
)(unsigned regno
, unsigned red
, unsigned green
,
279 unsigned blue
, unsigned transp
, struct fb_info
*info
);
281 /* set color registers in batch */
282 int (*fb_setcmap
)(struct fb_cmap
*cmap
, struct fb_info
*info
);
285 int (*fb_blank
)(int blank
, struct fb_info
*info
);
288 int (*fb_pan_display
)(struct fb_var_screeninfo
*var
, struct fb_info
*info
);
290 /* Draws a rectangle */
291 void (*fb_fillrect
) (struct fb_info
*info
, const struct fb_fillrect
*rect
);
292 /* Copy data from area to another */
293 void (*fb_copyarea
) (struct fb_info
*info
, const struct fb_copyarea
*region
);
294 /* Draws a image to the display */
295 void (*fb_imageblit
) (struct fb_info
*info
, const struct fb_image
*image
);
298 int (*fb_cursor
) (struct fb_info
*info
, struct fb_cursor
*cursor
);
300 /* wait for blit idle, optional */
301 int (*fb_sync
)(struct fb_info
*info
);
303 /* perform fb specific ioctl (optional) */
304 int (*fb_ioctl
)(struct fb_info
*info
, unsigned int cmd
,
307 /* Handle 32bit compat ioctl (optional) */
308 int (*fb_compat_ioctl
)(struct fb_info
*info
, unsigned cmd
,
311 /* perform fb specific mmap */
312 int (*fb_mmap
)(struct fb_info
*info
, struct vm_area_struct
*vma
);
314 /* get capability given var */
315 void (*fb_get_caps
)(struct fb_info
*info
, struct fb_blit_caps
*caps
,
316 struct fb_var_screeninfo
*var
);
318 /* teardown any resources to do with this framebuffer */
319 void (*fb_destroy
)(struct fb_info
*info
);
321 /* called at KDB enter and leave time to prepare the console */
322 int (*fb_debug_enter
)(struct fb_info
*info
);
323 int (*fb_debug_leave
)(struct fb_info
*info
);
326 #ifdef CONFIG_FB_TILEBLITTING
327 #define FB_TILE_CURSOR_NONE 0
328 #define FB_TILE_CURSOR_UNDERLINE 1
329 #define FB_TILE_CURSOR_LOWER_THIRD 2
330 #define FB_TILE_CURSOR_LOWER_HALF 3
331 #define FB_TILE_CURSOR_TWO_THIRDS 4
332 #define FB_TILE_CURSOR_BLOCK 5
335 __u32 width
; /* width of each tile in pixels */
336 __u32 height
; /* height of each tile in scanlines */
337 __u32 depth
; /* color depth of each tile */
338 __u32 length
; /* number of tiles in the map */
339 const __u8
*data
; /* actual tile map: a bitmap array, packed
340 to the nearest byte */
344 __u32 sx
; /* origin in the x-axis */
345 __u32 sy
; /* origin in the y-axis */
346 __u32 width
; /* number of tiles in the x-axis */
347 __u32 height
; /* number of tiles in the y-axis */
348 __u32 index
; /* what tile to use: index to tile map */
349 __u32 fg
; /* foreground color */
350 __u32 bg
; /* background color */
351 __u32 rop
; /* raster operation */
355 __u32 sx
; /* source origin in the x-axis */
356 __u32 sy
; /* source origin in the y-axis */
357 __u32 dx
; /* destination origin in the x-axis */
358 __u32 dy
; /* destination origin in the y-axis */
359 __u32 width
; /* number of tiles in the x-axis */
360 __u32 height
; /* number of tiles in the y-axis */
364 __u32 sx
; /* origin in the x-axis */
365 __u32 sy
; /* origin in the y-axis */
366 __u32 width
; /* number of tiles in the x-axis */
367 __u32 height
; /* number of tiles in the y-axis */
368 __u32 fg
; /* foreground color */
369 __u32 bg
; /* background color */
370 __u32 length
; /* number of tiles to draw */
371 __u32
*indices
; /* array of indices to tile map */
374 struct fb_tilecursor
{
375 __u32 sx
; /* cursor position in the x-axis */
376 __u32 sy
; /* cursor position in the y-axis */
377 __u32 mode
; /* 0 = erase, 1 = draw */
378 __u32 shape
; /* see FB_TILE_CURSOR_* */
379 __u32 fg
; /* foreground color */
380 __u32 bg
; /* background color */
384 /* set tile characteristics */
385 void (*fb_settile
)(struct fb_info
*info
, struct fb_tilemap
*map
);
387 /* all dimensions from hereon are in terms of tiles */
389 /* move a rectangular region of tiles from one area to another*/
390 void (*fb_tilecopy
)(struct fb_info
*info
, struct fb_tilearea
*area
);
391 /* fill a rectangular region with a tile */
392 void (*fb_tilefill
)(struct fb_info
*info
, struct fb_tilerect
*rect
);
393 /* copy an array of tiles */
394 void (*fb_tileblit
)(struct fb_info
*info
, struct fb_tileblit
*blit
);
396 void (*fb_tilecursor
)(struct fb_info
*info
,
397 struct fb_tilecursor
*cursor
);
398 /* get maximum length of the tile map */
399 int (*fb_get_tilemax
)(struct fb_info
*info
);
401 #endif /* CONFIG_FB_TILEBLITTING */
403 /* FBINFO_* = fb_info.flags bit flags */
404 #define FBINFO_DEFAULT 0
405 #define FBINFO_HWACCEL_DISABLED 0x0002
406 /* When FBINFO_HWACCEL_DISABLED is set:
407 * Hardware acceleration is turned off. Software implementations
408 * of required functions (copyarea(), fillrect(), and imageblit())
409 * takes over; acceleration engine should be in a quiescent state */
412 #define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */
413 #define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */
414 #define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */
416 /* hardware supported ops */
417 /* semantics: when a bit is set, it indicates that the operation is
418 * accelerated by hardware.
419 * required functions will still work even if the bit is not set.
420 * optional functions may not even exist if the flag bit is not set.
422 #define FBINFO_HWACCEL_NONE 0x0000
423 #define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */
424 #define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */
425 #define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */
426 #define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */
427 #define FBINFO_HWACCEL_XPAN 0x1000 /* optional */
428 #define FBINFO_HWACCEL_YPAN 0x2000 /* optional */
429 #define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */
431 #define FBINFO_MISC_USEREVENT 0x10000 /* event request
433 #define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */
435 /* A driver may set this flag to indicate that it does want a set_par to be
436 * called every time when fbcon_switch is executed. The advantage is that with
437 * this flag set you can really be sure that set_par is always called before
438 * any of the functions dependent on the correct hardware state or altering
439 * that state, even if you are using some broken X releases. The disadvantage
440 * is that it introduces unwanted delays to every console switch if set_par
441 * is slow. It is a good idea to try this flag in the drivers initialization
442 * code whenever there is a bug report related to switching between X and the
443 * framebuffer console.
445 #define FBINFO_MISC_ALWAYS_SETPAR 0x40000
447 /* where the fb is a firmware driver, and can be replaced with a proper one */
448 #define FBINFO_MISC_FIRMWARE 0x80000
450 * Host and GPU endianness differ.
452 #define FBINFO_FOREIGN_ENDIAN 0x100000
454 * Big endian math. This is the same flags as above, but with different
455 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
456 * and host endianness. Drivers should not use this flag.
458 #define FBINFO_BE_MATH 0x100000
460 /* report to the VT layer that this fb driver can accept forced console
461 output like oopses */
462 #define FBINFO_CAN_FORCE_OUTPUT 0x200000
468 struct mutex lock
; /* Lock for open/release/ioctl funcs */
469 struct mutex mm_lock
; /* Lock for fb_mmap and smem_* fields */
470 struct fb_var_screeninfo var
; /* Current var */
471 struct fb_fix_screeninfo fix
; /* Current fix */
472 struct fb_monspecs monspecs
; /* Current Monitor specs */
473 struct work_struct queue
; /* Framebuffer event queue */
474 struct fb_pixmap pixmap
; /* Image hardware mapper */
475 struct fb_pixmap sprite
; /* Cursor hardware mapper */
476 struct fb_cmap cmap
; /* Current cmap */
477 struct list_head modelist
; /* mode list */
478 struct fb_videomode
*mode
; /* current mode */
480 #ifdef CONFIG_FB_BACKLIGHT
481 /* assigned backlight device */
482 /* set before framebuffer registration,
483 remove after unregister */
484 struct backlight_device
*bl_dev
;
486 /* Backlight level curve */
487 struct mutex bl_curve_mutex
;
488 u8 bl_curve
[FB_BACKLIGHT_LEVELS
];
490 #ifdef CONFIG_FB_DEFERRED_IO
491 struct delayed_work deferred_work
;
492 struct fb_deferred_io
*fbdefio
;
495 struct fb_ops
*fbops
;
496 struct device
*device
; /* This is the parent */
497 struct device
*dev
; /* This is this fb device */
498 int class_flag
; /* private sysfs flags */
499 #ifdef CONFIG_FB_TILEBLITTING
500 struct fb_tile_ops
*tileops
; /* Tile Blitting */
503 char __iomem
*screen_base
; /* Virtual address */
506 unsigned long screen_size
; /* Amount of ioremapped VRAM or 0 */
507 void *pseudo_palette
; /* Fake palette of 16 colors */
508 #define FBINFO_STATE_RUNNING 0
509 #define FBINFO_STATE_SUSPENDED 1
510 u32 state
; /* Hardware state i.e suspend */
511 void *fbcon_par
; /* fbcon use-only private area */
512 /* From here on everything is device dependent */
514 /* we need the PCI or similar aperture base/size not
515 smem_start/size as smem_start may just be an object
516 allocated inside the aperture so may not actually overlap */
517 struct apertures_struct
{
520 resource_size_t base
;
521 resource_size_t size
;
525 bool skip_vt_switch
; /* no VT switch on suspend/resume required */
528 static inline struct apertures_struct
*alloc_apertures(unsigned int max_num
) {
529 struct apertures_struct
*a
= kzalloc(sizeof(struct apertures_struct
)
530 + max_num
* sizeof(struct aperture
), GFP_KERNEL
);
537 #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT
540 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
541 * when it wants to turn the acceleration engine on. This is
542 * really a separate operation, and should be modified via sysfs.
543 * But for now, we leave it broken with the following define
545 #define STUPID_ACCELF_TEXT_SHIT
548 #if defined(__sparc__)
550 /* We map all of our framebuffers such that big-endian accesses
551 * are what we want, so the following is sufficient.
555 #define fb_readb sbus_readb
556 #define fb_readw sbus_readw
557 #define fb_readl sbus_readl
558 #define fb_readq sbus_readq
559 #define fb_writeb sbus_writeb
560 #define fb_writew sbus_writew
561 #define fb_writel sbus_writel
562 #define fb_writeq sbus_writeq
563 #define fb_memset sbus_memset_io
564 #define fb_memcpy_fromfb sbus_memcpy_fromio
565 #define fb_memcpy_tofb sbus_memcpy_toio
567 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
569 #define fb_readb __raw_readb
570 #define fb_readw __raw_readw
571 #define fb_readl __raw_readl
572 #define fb_readq __raw_readq
573 #define fb_writeb __raw_writeb
574 #define fb_writew __raw_writew
575 #define fb_writel __raw_writel
576 #define fb_writeq __raw_writeq
577 #define fb_memset memset_io
578 #define fb_memcpy_fromfb memcpy_fromio
579 #define fb_memcpy_tofb memcpy_toio
583 #define fb_readb(addr) (*(volatile u8 *) (addr))
584 #define fb_readw(addr) (*(volatile u16 *) (addr))
585 #define fb_readl(addr) (*(volatile u32 *) (addr))
586 #define fb_readq(addr) (*(volatile u64 *) (addr))
587 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
588 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
589 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
590 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
591 #define fb_memset memset
592 #define fb_memcpy_fromfb memcpy
593 #define fb_memcpy_tofb memcpy
597 #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0)
598 #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \
600 #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \
604 * `Generic' versions of the frame buffer device operations
607 extern int fb_set_var(struct fb_info
*info
, struct fb_var_screeninfo
*var
);
608 extern int fb_pan_display(struct fb_info
*info
, struct fb_var_screeninfo
*var
);
609 extern int fb_blank(struct fb_info
*info
, int blank
);
610 extern void cfb_fillrect(struct fb_info
*info
, const struct fb_fillrect
*rect
);
611 extern void cfb_copyarea(struct fb_info
*info
, const struct fb_copyarea
*area
);
612 extern void cfb_imageblit(struct fb_info
*info
, const struct fb_image
*image
);
614 * Drawing operations where framebuffer is in system RAM
616 extern void sys_fillrect(struct fb_info
*info
, const struct fb_fillrect
*rect
);
617 extern void sys_copyarea(struct fb_info
*info
, const struct fb_copyarea
*area
);
618 extern void sys_imageblit(struct fb_info
*info
, const struct fb_image
*image
);
619 extern ssize_t
fb_sys_read(struct fb_info
*info
, char __user
*buf
,
620 size_t count
, loff_t
*ppos
);
621 extern ssize_t
fb_sys_write(struct fb_info
*info
, const char __user
*buf
,
622 size_t count
, loff_t
*ppos
);
624 /* drivers/video/fbmem.c */
625 extern int register_framebuffer(struct fb_info
*fb_info
);
626 extern int unregister_framebuffer(struct fb_info
*fb_info
);
627 extern int unlink_framebuffer(struct fb_info
*fb_info
);
628 extern int remove_conflicting_framebuffers(struct apertures_struct
*a
,
629 const char *name
, bool primary
);
630 extern int fb_prepare_logo(struct fb_info
*fb_info
, int rotate
);
631 extern int fb_show_logo(struct fb_info
*fb_info
, int rotate
);
632 extern char* fb_get_buffer_offset(struct fb_info
*info
, struct fb_pixmap
*buf
, u32 size
);
633 extern void fb_pad_unaligned_buffer(u8
*dst
, u32 d_pitch
, u8
*src
, u32 idx
,
634 u32 height
, u32 shift_high
, u32 shift_low
, u32 mod
);
635 extern void fb_pad_aligned_buffer(u8
*dst
, u32 d_pitch
, u8
*src
, u32 s_pitch
, u32 height
);
636 extern void fb_set_suspend(struct fb_info
*info
, int state
);
637 extern int fb_get_color_depth(struct fb_var_screeninfo
*var
,
638 struct fb_fix_screeninfo
*fix
);
639 extern int fb_get_options(const char *name
, char **option
);
640 extern int fb_new_modelist(struct fb_info
*info
);
642 extern struct fb_info
*registered_fb
[FB_MAX
];
643 extern int num_registered_fb
;
644 extern struct class *fb_class
;
646 extern int lock_fb_info(struct fb_info
*info
);
648 static inline void unlock_fb_info(struct fb_info
*info
)
650 mutex_unlock(&info
->lock
);
653 static inline void __fb_pad_aligned_buffer(u8
*dst
, u32 d_pitch
,
654 u8
*src
, u32 s_pitch
, u32 height
)
660 for (i
= height
; i
--; ) {
661 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
662 for (j
= 0; j
< s_pitch
; j
++)
668 /* drivers/video/fb_defio.c */
669 int fb_deferred_io_mmap(struct fb_info
*info
, struct vm_area_struct
*vma
);
670 extern void fb_deferred_io_init(struct fb_info
*info
);
671 extern void fb_deferred_io_open(struct fb_info
*info
,
674 extern void fb_deferred_io_cleanup(struct fb_info
*info
);
675 extern int fb_deferred_io_fsync(struct file
*file
, loff_t start
,
676 loff_t end
, int datasync
);
678 static inline bool fb_be_math(struct fb_info
*info
)
680 #ifdef CONFIG_FB_FOREIGN_ENDIAN
681 #if defined(CONFIG_FB_BOTH_ENDIAN)
682 return info
->flags
& FBINFO_BE_MATH
;
683 #elif defined(CONFIG_FB_BIG_ENDIAN)
685 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
687 #endif /* CONFIG_FB_BOTH_ENDIAN */
693 #endif /* __BIG_ENDIAN */
694 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
697 /* drivers/video/fbsysfs.c */
698 extern struct fb_info
*framebuffer_alloc(size_t size
, struct device
*dev
);
699 extern void framebuffer_release(struct fb_info
*info
);
700 extern int fb_init_device(struct fb_info
*fb_info
);
701 extern void fb_cleanup_device(struct fb_info
*head
);
702 extern void fb_bl_default_curve(struct fb_info
*fb_info
, u8 off
, u8 min
, u8 max
);
704 /* drivers/video/fbmon.c */
705 #define FB_MAXTIMINGS 0
706 #define FB_VSYNCTIMINGS 1
707 #define FB_HSYNCTIMINGS 2
708 #define FB_DCLKTIMINGS 3
709 #define FB_IGNOREMON 0x100
711 #define FB_MODE_IS_UNKNOWN 0
712 #define FB_MODE_IS_DETAILED 1
713 #define FB_MODE_IS_STANDARD 2
714 #define FB_MODE_IS_VESA 4
715 #define FB_MODE_IS_CALCULATED 8
716 #define FB_MODE_IS_FIRST 16
717 #define FB_MODE_IS_FROM_VAR 32
719 extern int fbmon_dpms(const struct fb_info
*fb_info
);
720 extern int fb_get_mode(int flags
, u32 val
, struct fb_var_screeninfo
*var
,
721 struct fb_info
*info
);
722 extern int fb_validate_mode(const struct fb_var_screeninfo
*var
,
723 struct fb_info
*info
);
724 extern int fb_parse_edid(unsigned char *edid
, struct fb_var_screeninfo
*var
);
725 extern const unsigned char *fb_firmware_edid(struct device
*device
);
726 extern void fb_edid_to_monspecs(unsigned char *edid
,
727 struct fb_monspecs
*specs
);
728 extern void fb_edid_add_monspecs(unsigned char *edid
,
729 struct fb_monspecs
*specs
);
730 extern void fb_destroy_modedb(struct fb_videomode
*modedb
);
731 extern int fb_find_mode_cvt(struct fb_videomode
*mode
, int margins
, int rb
);
732 extern unsigned char *fb_ddc_read(struct i2c_adapter
*adapter
);
734 extern int of_get_fb_videomode(struct device_node
*np
,
735 struct fb_videomode
*fb
,
737 extern int fb_videomode_from_videomode(const struct videomode
*vm
,
738 struct fb_videomode
*fbmode
);
740 /* drivers/video/modedb.c */
741 #define VESA_MODEDB_SIZE 43
742 #define DMT_SIZE 0x50
744 extern void fb_var_to_videomode(struct fb_videomode
*mode
,
745 const struct fb_var_screeninfo
*var
);
746 extern void fb_videomode_to_var(struct fb_var_screeninfo
*var
,
747 const struct fb_videomode
*mode
);
748 extern int fb_mode_is_equal(const struct fb_videomode
*mode1
,
749 const struct fb_videomode
*mode2
);
750 extern int fb_add_videomode(const struct fb_videomode
*mode
,
751 struct list_head
*head
);
752 extern void fb_delete_videomode(const struct fb_videomode
*mode
,
753 struct list_head
*head
);
754 extern const struct fb_videomode
*fb_match_mode(const struct fb_var_screeninfo
*var
,
755 struct list_head
*head
);
756 extern const struct fb_videomode
*fb_find_best_mode(const struct fb_var_screeninfo
*var
,
757 struct list_head
*head
);
758 extern const struct fb_videomode
*fb_find_nearest_mode(const struct fb_videomode
*mode
,
759 struct list_head
*head
);
760 extern void fb_destroy_modelist(struct list_head
*head
);
761 extern void fb_videomode_to_modelist(const struct fb_videomode
*modedb
, int num
,
762 struct list_head
*head
);
763 extern const struct fb_videomode
*fb_find_best_display(const struct fb_monspecs
*specs
,
764 struct list_head
*head
);
766 /* drivers/video/fbcmap.c */
767 extern int fb_alloc_cmap(struct fb_cmap
*cmap
, int len
, int transp
);
768 extern int fb_alloc_cmap_gfp(struct fb_cmap
*cmap
, int len
, int transp
, gfp_t flags
);
769 extern void fb_dealloc_cmap(struct fb_cmap
*cmap
);
770 extern int fb_copy_cmap(const struct fb_cmap
*from
, struct fb_cmap
*to
);
771 extern int fb_cmap_to_user(const struct fb_cmap
*from
, struct fb_cmap_user
*to
);
772 extern int fb_set_cmap(struct fb_cmap
*cmap
, struct fb_info
*fb_info
);
773 extern int fb_set_user_cmap(struct fb_cmap_user
*cmap
, struct fb_info
*fb_info
);
774 extern const struct fb_cmap
*fb_default_cmap(int len
);
775 extern void fb_invert_cmaps(void);
777 struct fb_videomode
{
778 const char *name
; /* optional */
779 u32 refresh
; /* optional */
794 struct dmt_videomode
{
798 const struct fb_videomode
*mode
;
801 extern const char *fb_mode_option
;
802 extern const struct fb_videomode vesa_modes
[];
803 extern const struct fb_videomode cea_modes
[65];
804 extern const struct dmt_videomode dmt_modes
[];
807 struct list_head list
;
808 struct fb_videomode mode
;
811 extern int fb_find_mode(struct fb_var_screeninfo
*var
,
812 struct fb_info
*info
, const char *mode_option
,
813 const struct fb_videomode
*db
,
815 const struct fb_videomode
*default_mode
,
816 unsigned int default_bpp
);
818 /* Convenience logging macros */
819 #define fb_err(fb_info, fmt, ...) \
820 pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
821 #define fb_notice(info, fmt, ...) \
822 pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
823 #define fb_warn(fb_info, fmt, ...) \
824 pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
825 #define fb_info(fb_info, fmt, ...) \
826 pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
827 #define fb_dbg(fb_info, fmt, ...) \
828 pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
830 #endif /* _LINUX_FB_H */