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
130 #ifdef CONFIG_GUMSTIX_AM200EPD
131 /* only used by mach-pxa/am200epd.c */
132 #define FB_EVENT_FB_REGISTERED 0x05
133 #define FB_EVENT_FB_UNREGISTERED 0x06
136 /* A display blank is requested */
137 #define FB_EVENT_BLANK 0x09
138 /* A hardware display blank early change occurred */
139 #define FB_EARLY_EVENT_BLANK 0x10
140 /* A hardware display blank revert early change occurred */
141 #define FB_R_EARLY_EVENT_BLANK 0x11
144 struct fb_info *info;
148 struct fb_blit_caps {
155 #ifdef CONFIG_FB_NOTIFY
156 extern int fb_register_client(struct notifier_block *nb);
157 extern int fb_unregister_client(struct notifier_block *nb);
158 extern int fb_notifier_call_chain(unsigned long val, void *v);
160 static inline int fb_register_client(struct notifier_block *nb)
165 static inline int fb_unregister_client(struct notifier_block *nb)
170 static inline int fb_notifier_call_chain(unsigned long val, void *v)
177 * Pixmap structure definition
179 * The purpose of this structure is to translate data
180 * from the hardware independent format of fbdev to what
181 * format the hardware needs.
184 #define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */
185 #define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */
186 #define FB_PIXMAP_IO 4 /* memory is iomapped */
187 #define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */
190 u8 *addr; /* pointer to memory */
191 u32 size; /* size of buffer in bytes */
192 u32 offset; /* current offset to buffer */
193 u32 buf_align; /* byte alignment of each bitmap */
194 u32 scan_align; /* alignment per scanline */
195 u32 access_align; /* alignment per read/write (bits) */
196 u32 flags; /* see FB_PIXMAP_* */
197 u32 blit_x; /* supported bit block dimensions (1-32)*/
198 u32 blit_y; /* Format: blit_x = 1 << (width - 1) */
199 /* blit_y = 1 << (height - 1) */
200 /* if 0, will be set to 0xffffffff (all)*/
202 void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
203 void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
206 #ifdef CONFIG_FB_DEFERRED_IO
207 struct fb_deferred_io {
208 /* delay between mkwrite and deferred handler */
210 struct mutex lock; /* mutex that protects the page list */
211 struct list_head pagelist; /* list of touched pages */
213 void (*first_io)(struct fb_info *info);
214 void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
219 * Frame buffer operations
221 * LOCKING NOTE: those functions must _ALL_ be called with the console
222 * semaphore held, this is the only suitable locking mechanism we have
223 * in 2.6. Some may be called at interrupt time at this point though.
225 * The exception to this is the debug related hooks. Putting the fb
226 * into a debug state (e.g. flipping to the kernel console) and restoring
227 * it must be done in a lock-free manner, so low level drivers should
228 * keep track of the initial console (if applicable) and may need to
229 * perform direct, unlocked hardware writes in these hooks.
233 /* open/release and usage marking */
234 struct module *owner;
235 int (*fb_open)(struct fb_info *info, int user);
236 int (*fb_release)(struct fb_info *info, int user);
238 /* For framebuffers with strange non linear layouts or that do not
239 * work with normal memory mapped access
241 ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
242 size_t count, loff_t *ppos);
243 ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
244 size_t count, loff_t *ppos);
246 /* checks var and eventually tweaks it to something supported,
247 * DO NOT MODIFY PAR */
248 int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
250 /* set the video mode according to info->var */
251 int (*fb_set_par)(struct fb_info *info);
253 /* set color register */
254 int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
255 unsigned blue, unsigned transp, struct fb_info *info);
257 /* set color registers in batch */
258 int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
261 int (*fb_blank)(int blank, struct fb_info *info);
264 int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
266 /* Draws a rectangle */
267 void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
268 /* Copy data from area to another */
269 void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
270 /* Draws a image to the display */
271 void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
274 int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
276 /* wait for blit idle, optional */
277 int (*fb_sync)(struct fb_info *info);
279 /* perform fb specific ioctl (optional) */
280 int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
283 /* Handle 32bit compat ioctl (optional) */
284 int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
287 /* perform fb specific mmap */
288 int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
290 /* get capability given var */
291 void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
292 struct fb_var_screeninfo *var);
294 /* teardown any resources to do with this framebuffer */
295 void (*fb_destroy)(struct fb_info *info);
297 /* called at KDB enter and leave time to prepare the console */
298 int (*fb_debug_enter)(struct fb_info *info);
299 int (*fb_debug_leave)(struct fb_info *info);
302 #ifdef CONFIG_FB_TILEBLITTING
303 #define FB_TILE_CURSOR_NONE 0
304 #define FB_TILE_CURSOR_UNDERLINE 1
305 #define FB_TILE_CURSOR_LOWER_THIRD 2
306 #define FB_TILE_CURSOR_LOWER_HALF 3
307 #define FB_TILE_CURSOR_TWO_THIRDS 4
308 #define FB_TILE_CURSOR_BLOCK 5
311 __u32 width; /* width of each tile in pixels */
312 __u32 height; /* height of each tile in scanlines */
313 __u32 depth; /* color depth of each tile */
314 __u32 length; /* number of tiles in the map */
315 const __u8 *data; /* actual tile map: a bitmap array, packed
316 to the nearest byte */
320 __u32 sx; /* origin in the x-axis */
321 __u32 sy; /* origin in the y-axis */
322 __u32 width; /* number of tiles in the x-axis */
323 __u32 height; /* number of tiles in the y-axis */
324 __u32 index; /* what tile to use: index to tile map */
325 __u32 fg; /* foreground color */
326 __u32 bg; /* background color */
327 __u32 rop; /* raster operation */
331 __u32 sx; /* source origin in the x-axis */
332 __u32 sy; /* source origin in the y-axis */
333 __u32 dx; /* destination origin in the x-axis */
334 __u32 dy; /* destination origin in the y-axis */
335 __u32 width; /* number of tiles in the x-axis */
336 __u32 height; /* number of tiles in the y-axis */
340 __u32 sx; /* origin in the x-axis */
341 __u32 sy; /* origin in the y-axis */
342 __u32 width; /* number of tiles in the x-axis */
343 __u32 height; /* number of tiles in the y-axis */
344 __u32 fg; /* foreground color */
345 __u32 bg; /* background color */
346 __u32 length; /* number of tiles to draw */
347 __u32 *indices; /* array of indices to tile map */
350 struct fb_tilecursor {
351 __u32 sx; /* cursor position in the x-axis */
352 __u32 sy; /* cursor position in the y-axis */
353 __u32 mode; /* 0 = erase, 1 = draw */
354 __u32 shape; /* see FB_TILE_CURSOR_* */
355 __u32 fg; /* foreground color */
356 __u32 bg; /* background color */
360 /* set tile characteristics */
361 void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
363 /* all dimensions from hereon are in terms of tiles */
365 /* move a rectangular region of tiles from one area to another*/
366 void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
367 /* fill a rectangular region with a tile */
368 void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
369 /* copy an array of tiles */
370 void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
372 void (*fb_tilecursor)(struct fb_info *info,
373 struct fb_tilecursor *cursor);
374 /* get maximum length of the tile map */
375 int (*fb_get_tilemax)(struct fb_info *info);
377 #endif /* CONFIG_FB_TILEBLITTING */
379 /* FBINFO_* = fb_info.flags bit flags */
380 #define FBINFO_DEFAULT 0
381 #define FBINFO_HWACCEL_DISABLED 0x0002
382 /* When FBINFO_HWACCEL_DISABLED is set:
383 * Hardware acceleration is turned off. Software implementations
384 * of required functions (copyarea(), fillrect(), and imageblit())
385 * takes over; acceleration engine should be in a quiescent state */
388 #define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */
389 #define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */
390 #define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */
392 /* hardware supported ops */
393 /* semantics: when a bit is set, it indicates that the operation is
394 * accelerated by hardware.
395 * required functions will still work even if the bit is not set.
396 * optional functions may not even exist if the flag bit is not set.
398 #define FBINFO_HWACCEL_NONE 0x0000
399 #define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */
400 #define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */
401 #define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */
402 #define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */
403 #define FBINFO_HWACCEL_XPAN 0x1000 /* optional */
404 #define FBINFO_HWACCEL_YPAN 0x2000 /* optional */
405 #define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */
407 #define FBINFO_MISC_USEREVENT 0x10000 /* event request
409 #define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */
411 /* A driver may set this flag to indicate that it does want a set_par to be
412 * called every time when fbcon_switch is executed. The advantage is that with
413 * this flag set you can really be sure that set_par is always called before
414 * any of the functions dependent on the correct hardware state or altering
415 * that state, even if you are using some broken X releases. The disadvantage
416 * is that it introduces unwanted delays to every console switch if set_par
417 * is slow. It is a good idea to try this flag in the drivers initialization
418 * code whenever there is a bug report related to switching between X and the
419 * framebuffer console.
421 #define FBINFO_MISC_ALWAYS_SETPAR 0x40000
423 /* where the fb is a firmware driver, and can be replaced with a proper one */
424 #define FBINFO_MISC_FIRMWARE 0x80000
426 * Host and GPU endianness differ.
428 #define FBINFO_FOREIGN_ENDIAN 0x100000
430 * Big endian math. This is the same flags as above, but with different
431 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
432 * and host endianness. Drivers should not use this flag.
434 #define FBINFO_BE_MATH 0x100000
436 * Hide smem_start in the FBIOGET_FSCREENINFO IOCTL. This is used by modern DRM
437 * drivers to stop userspace from trying to share buffers behind the kernel's
438 * back. Instead dma-buf based buffer sharing should be used.
440 #define FBINFO_HIDE_SMEM_START 0x200000
448 * -1 by default, set to a FB_ROTATE_* value by the driver, if it knows
449 * a lcd is not mounted upright and fbcon should rotate to compensate.
451 int fbcon_rotate_hint;
452 struct mutex lock; /* Lock for open/release/ioctl funcs */
453 struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */
454 struct fb_var_screeninfo var; /* Current var */
455 struct fb_fix_screeninfo fix; /* Current fix */
456 struct fb_monspecs monspecs; /* Current Monitor specs */
457 struct work_struct queue; /* Framebuffer event queue */
458 struct fb_pixmap pixmap; /* Image hardware mapper */
459 struct fb_pixmap sprite; /* Cursor hardware mapper */
460 struct fb_cmap cmap; /* Current cmap */
461 struct list_head modelist; /* mode list */
462 struct fb_videomode *mode; /* current mode */
464 #if IS_ENABLED(CONFIG_FB_BACKLIGHT)
465 /* assigned backlight device */
466 /* set before framebuffer registration,
467 remove after unregister */
468 struct backlight_device *bl_dev;
470 /* Backlight level curve */
471 struct mutex bl_curve_mutex;
472 u8 bl_curve[FB_BACKLIGHT_LEVELS];
474 #ifdef CONFIG_FB_DEFERRED_IO
475 struct delayed_work deferred_work;
476 struct fb_deferred_io *fbdefio;
479 struct fb_ops *fbops;
480 struct device *device; /* This is the parent */
481 struct device *dev; /* This is this fb device */
482 int class_flag; /* private sysfs flags */
483 #ifdef CONFIG_FB_TILEBLITTING
484 struct fb_tile_ops *tileops; /* Tile Blitting */
487 char __iomem *screen_base; /* Virtual address */
490 unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */
491 void *pseudo_palette; /* Fake palette of 16 colors */
492 #define FBINFO_STATE_RUNNING 0
493 #define FBINFO_STATE_SUSPENDED 1
494 u32 state; /* Hardware state i.e suspend */
495 void *fbcon_par; /* fbcon use-only private area */
496 /* From here on everything is device dependent */
498 /* we need the PCI or similar aperture base/size not
499 smem_start/size as smem_start may just be an object
500 allocated inside the aperture so may not actually overlap */
501 struct apertures_struct {
504 resource_size_t base;
505 resource_size_t size;
509 bool skip_vt_switch; /* no VT switch on suspend/resume required */
512 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
513 struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
514 + max_num * sizeof(struct aperture), GFP_KERNEL);
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__) || \
552 defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || \
553 defined(__arm__) || defined(__aarch64__)
555 #define fb_readb __raw_readb
556 #define fb_readw __raw_readw
557 #define fb_readl __raw_readl
558 #define fb_readq __raw_readq
559 #define fb_writeb __raw_writeb
560 #define fb_writew __raw_writew
561 #define fb_writel __raw_writel
562 #define fb_writeq __raw_writeq
563 #define fb_memset memset_io
564 #define fb_memcpy_fromfb memcpy_fromio
565 #define fb_memcpy_tofb memcpy_toio
569 #define fb_readb(addr) (*(volatile u8 *) (addr))
570 #define fb_readw(addr) (*(volatile u16 *) (addr))
571 #define fb_readl(addr) (*(volatile u32 *) (addr))
572 #define fb_readq(addr) (*(volatile u64 *) (addr))
573 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
574 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
575 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
576 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
577 #define fb_memset memset
578 #define fb_memcpy_fromfb memcpy
579 #define fb_memcpy_tofb memcpy
583 #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0)
584 #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \
586 #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \
590 * `Generic' versions of the frame buffer device operations
593 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
594 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
595 extern int fb_blank(struct fb_info *info, int blank);
596 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
597 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
598 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
600 * Drawing operations where framebuffer is in system RAM
602 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
603 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
604 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
605 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
606 size_t count, loff_t *ppos);
607 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
608 size_t count, loff_t *ppos);
610 /* drivers/video/fbmem.c */
611 extern int register_framebuffer(struct fb_info *fb_info);
612 extern void unregister_framebuffer(struct fb_info *fb_info);
613 extern void unlink_framebuffer(struct fb_info *fb_info);
614 extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, int res_id,
616 extern int remove_conflicting_framebuffers(struct apertures_struct *a,
617 const char *name, bool primary);
618 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
619 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
620 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
621 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
622 u32 height, u32 shift_high, u32 shift_low, u32 mod);
623 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
624 extern void fb_set_suspend(struct fb_info *info, int state);
625 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
626 struct fb_fix_screeninfo *fix);
627 extern int fb_get_options(const char *name, char **option);
628 extern int fb_new_modelist(struct fb_info *info);
630 extern struct fb_info *registered_fb[FB_MAX];
631 extern int num_registered_fb;
632 extern bool fb_center_logo;
633 extern struct class *fb_class;
635 #define for_each_registered_fb(i) \
636 for (i = 0; i < FB_MAX; i++) \
637 if (!registered_fb[i]) {} else
639 static inline void lock_fb_info(struct fb_info *info)
641 mutex_lock(&info->lock);
644 static inline void unlock_fb_info(struct fb_info *info)
646 mutex_unlock(&info->lock);
649 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
650 u8 *src, u32 s_pitch, u32 height)
656 for (i = height; i--; ) {
657 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
658 for (j = 0; j < s_pitch; j++)
664 /* drivers/video/fb_defio.c */
665 int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma);
666 extern void fb_deferred_io_init(struct fb_info *info);
667 extern void fb_deferred_io_open(struct fb_info *info,
670 extern void fb_deferred_io_cleanup(struct fb_info *info);
671 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
672 loff_t end, int datasync);
674 static inline bool fb_be_math(struct fb_info *info)
676 #ifdef CONFIG_FB_FOREIGN_ENDIAN
677 #if defined(CONFIG_FB_BOTH_ENDIAN)
678 return info->flags & FBINFO_BE_MATH;
679 #elif defined(CONFIG_FB_BIG_ENDIAN)
681 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
683 #endif /* CONFIG_FB_BOTH_ENDIAN */
689 #endif /* __BIG_ENDIAN */
690 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
693 /* drivers/video/fbsysfs.c */
694 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
695 extern void framebuffer_release(struct fb_info *info);
696 extern int fb_init_device(struct fb_info *fb_info);
697 extern void fb_cleanup_device(struct fb_info *head);
698 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
700 /* drivers/video/fbmon.c */
701 #define FB_MAXTIMINGS 0
702 #define FB_VSYNCTIMINGS 1
703 #define FB_HSYNCTIMINGS 2
704 #define FB_DCLKTIMINGS 3
705 #define FB_IGNOREMON 0x100
707 #define FB_MODE_IS_UNKNOWN 0
708 #define FB_MODE_IS_DETAILED 1
709 #define FB_MODE_IS_STANDARD 2
710 #define FB_MODE_IS_VESA 4
711 #define FB_MODE_IS_CALCULATED 8
712 #define FB_MODE_IS_FIRST 16
713 #define FB_MODE_IS_FROM_VAR 32
715 extern int fbmon_dpms(const struct fb_info *fb_info);
716 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
717 struct fb_info *info);
718 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
719 struct fb_info *info);
720 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
721 extern const unsigned char *fb_firmware_edid(struct device *device);
722 extern void fb_edid_to_monspecs(unsigned char *edid,
723 struct fb_monspecs *specs);
724 extern void fb_edid_add_monspecs(unsigned char *edid,
725 struct fb_monspecs *specs);
726 extern void fb_destroy_modedb(struct fb_videomode *modedb);
727 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
728 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
730 extern int of_get_fb_videomode(struct device_node *np,
731 struct fb_videomode *fb,
733 extern int fb_videomode_from_videomode(const struct videomode *vm,
734 struct fb_videomode *fbmode);
736 /* drivers/video/modedb.c */
737 #define VESA_MODEDB_SIZE 43
738 #define DMT_SIZE 0x50
740 extern void fb_var_to_videomode(struct fb_videomode *mode,
741 const struct fb_var_screeninfo *var);
742 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
743 const struct fb_videomode *mode);
744 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
745 const struct fb_videomode *mode2);
746 extern int fb_add_videomode(const struct fb_videomode *mode,
747 struct list_head *head);
748 extern void fb_delete_videomode(const struct fb_videomode *mode,
749 struct list_head *head);
750 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
751 struct list_head *head);
752 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
753 struct list_head *head);
754 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
755 struct list_head *head);
756 extern void fb_destroy_modelist(struct list_head *head);
757 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
758 struct list_head *head);
759 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
760 struct list_head *head);
762 /* drivers/video/fbcmap.c */
763 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
764 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
765 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
766 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
767 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
768 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
769 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
770 extern const struct fb_cmap *fb_default_cmap(int len);
771 extern void fb_invert_cmaps(void);
773 struct fb_videomode {
774 const char *name; /* optional */
775 u32 refresh; /* optional */
790 struct dmt_videomode {
794 const struct fb_videomode *mode;
797 extern const char *fb_mode_option;
798 extern const struct fb_videomode vesa_modes[];
799 extern const struct fb_videomode cea_modes[65];
800 extern const struct dmt_videomode dmt_modes[];
803 struct list_head list;
804 struct fb_videomode mode;
807 extern int fb_find_mode(struct fb_var_screeninfo *var,
808 struct fb_info *info, const char *mode_option,
809 const struct fb_videomode *db,
811 const struct fb_videomode *default_mode,
812 unsigned int default_bpp);
814 /* Convenience logging macros */
815 #define fb_err(fb_info, fmt, ...) \
816 pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
817 #define fb_notice(info, fmt, ...) \
818 pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
819 #define fb_warn(fb_info, fmt, ...) \
820 pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
821 #define fb_info(fb_info, fmt, ...) \
822 pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
823 #define fb_dbg(fb_info, fmt, ...) \
824 pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
826 #endif /* _LINUX_FB_H */