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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX_FB_H
2#define _LINUX_FB_H
3
Jesse Barnesd219adc2010-08-02 12:05:41 -07004#include <linux/kgdb.h>
David Howells607ca462012-10-13 10:46:48 +01005#include <uapi/linux/fb.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07006
Linus Torvalds1da177e2005-04-16 15:20:36 -07007#define FBIO_CURSOR _IOWR('F', 0x08, struct fb_cursor_user)
Linus Torvalds1da177e2005-04-16 15:20:36 -07008
9#include <linux/fs.h>
10#include <linux/init.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/workqueue.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/notifier.h>
13#include <linux/list.h>
Michal Januszewski2b257422006-08-13 23:24:26 -070014#include <linux/backlight.h>
Marcin Slusarz1471ca92010-05-16 17:27:03 +020015#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <asm/io.h>
17
18struct vm_area_struct;
19struct fb_info;
20struct device;
21struct file;
Steffen Trumtrar2db54c72012-11-14 10:55:04 +010022struct videomode;
Steffen Trumtrar79089042012-11-14 11:12:38 +010023struct device_node;
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
25/* Definitions below are used in the parsed monitor specs */
26#define FB_DPMS_ACTIVE_OFF 1
27#define FB_DPMS_SUSPEND 2
28#define FB_DPMS_STANDBY 4
29
30#define FB_DISP_DDI 1
31#define FB_DISP_ANA_700_300 2
32#define FB_DISP_ANA_714_286 4
33#define FB_DISP_ANA_1000_400 8
34#define FB_DISP_ANA_700_000 16
35
36#define FB_DISP_MONO 32
37#define FB_DISP_RGB 64
38#define FB_DISP_MULTI 128
39#define FB_DISP_UNKNOWN 256
40
41#define FB_SIGNAL_NONE 0
42#define FB_SIGNAL_BLANK_BLANK 1
43#define FB_SIGNAL_SEPARATE 2
44#define FB_SIGNAL_COMPOSITE 4
45#define FB_SIGNAL_SYNC_ON_GREEN 8
46#define FB_SIGNAL_SERRATION_ON 16
47
48#define FB_MISC_PRIM_COLOR 1
49#define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */
50struct fb_chroma {
51 __u32 redx; /* in fraction of 1024 */
52 __u32 greenx;
53 __u32 bluex;
54 __u32 whitex;
55 __u32 redy;
56 __u32 greeny;
57 __u32 bluey;
58 __u32 whitey;
59};
60
61struct fb_monspecs {
62 struct fb_chroma chroma;
63 struct fb_videomode *modedb; /* mode database */
64 __u8 manufacturer[4]; /* Manufacturer */
65 __u8 monitor[14]; /* Monitor String */
66 __u8 serial_no[14]; /* Serial Number */
67 __u8 ascii[14]; /* ? */
68 __u32 modedb_len; /* mode database length */
69 __u32 model; /* Monitor Model */
70 __u32 serial; /* Serial Number - Integer */
71 __u32 year; /* Year manufactured */
72 __u32 week; /* Week Manufactured */
73 __u32 hfmin; /* hfreq lower limit (Hz) */
74 __u32 hfmax; /* hfreq upper limit (Hz) */
75 __u32 dclkmin; /* pixelclock lower limit (Hz) */
76 __u32 dclkmax; /* pixelclock upper limit (Hz) */
77 __u16 input; /* display type - see FB_DISP_* */
78 __u16 dpms; /* DPMS support - see FB_DPMS_ */
79 __u16 signal; /* Signal Type - see FB_SIGNAL_* */
80 __u16 vfmin; /* vfreq lower limit (Hz) */
81 __u16 vfmax; /* vfreq upper limit (Hz) */
82 __u16 gamma; /* Gamma - in fractions of 100 */
83 __u16 gtf : 1; /* supports GTF */
84 __u16 misc; /* Misc flags - see FB_MISC_* */
85 __u8 version; /* EDID version... */
86 __u8 revision; /* ...and revision */
87 __u8 max_x; /* Maximum horizontal size (cm) */
88 __u8 max_y; /* Maximum vertical size (cm) */
89};
90
91struct fb_cmap_user {
92 __u32 start; /* First entry */
93 __u32 len; /* Number of entries */
94 __u16 __user *red; /* Red values */
95 __u16 __user *green;
96 __u16 __user *blue;
97 __u16 __user *transp; /* transparency, can be NULL */
98};
99
100struct fb_image_user {
101 __u32 dx; /* Where to place image */
102 __u32 dy;
103 __u32 width; /* Size of image */
104 __u32 height;
105 __u32 fg_color; /* Only used when a mono bitmap */
106 __u32 bg_color;
107 __u8 depth; /* Depth of the image */
108 const char __user *data; /* Pointer to image data */
109 struct fb_cmap_user cmap; /* color map info */
110};
111
112struct fb_cursor_user {
113 __u16 set; /* what to set */
114 __u16 enable; /* cursor on/off */
115 __u16 rop; /* bitop operation */
116 const char __user *mask; /* cursor mask bits */
117 struct fbcurpos hot; /* cursor hot spot */
118 struct fb_image_user image; /* Cursor image */
119};
120
121/*
122 * Register/unregister for framebuffer events
123 */
124
125/* The resolution of the passed in fb_info about to change */
126#define FB_EVENT_MODE_CHANGE 0x01
127/* The display on this fb_info is beeing suspended, no access to the
128 * framebuffer is allowed any more after that call returns
129 */
130#define FB_EVENT_SUSPEND 0x02
131/* The display on this fb_info was resumed, you can restore the display
132 * if you own it
133 */
134#define FB_EVENT_RESUME 0x03
135/* An entry from the modelist was removed */
136#define FB_EVENT_MODE_DELETE 0x04
137/* A driver registered itself */
138#define FB_EVENT_FB_REGISTERED 0x05
Antonino A. Daplase614b182006-06-26 00:27:09 -0700139/* A driver unregistered itself */
140#define FB_EVENT_FB_UNREGISTERED 0x06
Antonino A. Daplase4fc2762005-11-08 21:39:09 -0800141/* CONSOLE-SPECIFIC: get console to framebuffer mapping */
Antonino A. Daplase614b182006-06-26 00:27:09 -0700142#define FB_EVENT_GET_CONSOLE_MAP 0x07
Antonino A. Daplase4fc2762005-11-08 21:39:09 -0800143/* CONSOLE-SPECIFIC: set console to framebuffer mapping */
Antonino A. Daplase614b182006-06-26 00:27:09 -0700144#define FB_EVENT_SET_CONSOLE_MAP 0x08
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300145/* A hardware display blank change occurred */
Antonino A. Daplase614b182006-06-26 00:27:09 -0700146#define FB_EVENT_BLANK 0x09
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147/* Private modelist is to be replaced */
Antonino A. Daplase614b182006-06-26 00:27:09 -0700148#define FB_EVENT_NEW_MODELIST 0x0A
Antonino A. Daplas7726e9e2005-09-09 13:04:29 -0700149/* The resolution of the passed in fb_info about to change and
150 all vc's should be changed */
Antonino A. Daplase614b182006-06-26 00:27:09 -0700151#define FB_EVENT_MODE_CHANGE_ALL 0x0B
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300152/* A software display blank change occurred */
Richard Purdie994efac2007-02-09 09:46:45 +0000153#define FB_EVENT_CONBLANK 0x0C
Antonino A. Daplas38a3dc52007-05-08 00:39:37 -0700154/* Get drawing requirements */
155#define FB_EVENT_GET_REQ 0x0D
Jesse Barnescfafca82007-07-17 04:05:33 -0700156/* Unbind from the console if possible */
157#define FB_EVENT_FB_UNBIND 0x0E
Dave Airlie6a9ee8a2010-02-01 15:38:10 +1000158/* CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
159#define FB_EVENT_REMAP_ALL_CONSOLE 0x0F
Inki Daebf059292012-05-29 15:07:12 -0700160/* A hardware display blank early change occured */
161#define FB_EARLY_EVENT_BLANK 0x10
162/* A hardware display blank revert early change occured */
163#define FB_R_EARLY_EVENT_BLANK 0x11
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164
165struct fb_event {
166 struct fb_info *info;
167 void *data;
168};
169
Antonino A. Daplas38a3dc52007-05-08 00:39:37 -0700170struct fb_blit_caps {
171 u32 x;
172 u32 y;
173 u32 len;
174 u32 flags;
175};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176
177extern int fb_register_client(struct notifier_block *nb);
178extern int fb_unregister_client(struct notifier_block *nb);
Antonino A. Daplas256154f2006-07-30 03:04:17 -0700179extern int fb_notifier_call_chain(unsigned long val, void *v);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180/*
181 * Pixmap structure definition
182 *
183 * The purpose of this structure is to translate data
184 * from the hardware independent format of fbdev to what
185 * format the hardware needs.
186 */
187
188#define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */
189#define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */
190#define FB_PIXMAP_IO 4 /* memory is iomapped */
191#define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */
192
193struct fb_pixmap {
194 u8 *addr; /* pointer to memory */
195 u32 size; /* size of buffer in bytes */
196 u32 offset; /* current offset to buffer */
197 u32 buf_align; /* byte alignment of each bitmap */
198 u32 scan_align; /* alignment per scanline */
James Simmonsf5a99512005-06-21 17:16:58 -0700199 u32 access_align; /* alignment per read/write (bits) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 u32 flags; /* see FB_PIXMAP_* */
Antonino A. Daplasbf26ad72007-05-08 00:39:09 -0700201 u32 blit_x; /* supported bit block dimensions (1-32)*/
202 u32 blit_y; /* Format: blit_x = 1 << (width - 1) */
203 /* blit_y = 1 << (height - 1) */
204 /* if 0, will be set to 0xffffffff (all)*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 /* access methods */
James Simmonsf5a99512005-06-21 17:16:58 -0700206 void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
207 void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208};
209
Jaya Kumar60b59be2007-05-08 00:37:37 -0700210#ifdef CONFIG_FB_DEFERRED_IO
211struct fb_deferred_io {
212 /* delay between mkwrite and deferred handler */
213 unsigned long delay;
214 struct mutex lock; /* mutex that protects the page list */
215 struct list_head pagelist; /* list of touched pages */
216 /* callback */
Heiko Stübner1f45f9d2012-04-28 12:19:10 +0200217 void (*first_io)(struct fb_info *info);
Jaya Kumar60b59be2007-05-08 00:37:37 -0700218 void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
219};
220#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
222/*
223 * Frame buffer operations
224 *
225 * LOCKING NOTE: those functions must _ALL_ be called with the console
Adrian Bunkb3c2ffd2006-06-30 18:20:44 +0200226 * semaphore held, this is the only suitable locking mechanism we have
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 * in 2.6. Some may be called at interrupt time at this point though.
Jesse Barnesd219adc2010-08-02 12:05:41 -0700228 *
229 * The exception to this is the debug related hooks. Putting the fb
230 * into a debug state (e.g. flipping to the kernel console) and restoring
231 * it must be done in a lock-free manner, so low level drivers should
232 * keep track of the initial console (if applicable) and may need to
233 * perform direct, unlocked hardware writes in these hooks.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 */
235
236struct fb_ops {
237 /* open/release and usage marking */
238 struct module *owner;
239 int (*fb_open)(struct fb_info *info, int user);
240 int (*fb_release)(struct fb_info *info, int user);
241
242 /* For framebuffers with strange non linear layouts or that do not
243 * work with normal memory mapped access
244 */
Antonino A. Daplas3f9b0882007-05-08 00:39:02 -0700245 ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
246 size_t count, loff_t *ppos);
247 ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
248 size_t count, loff_t *ppos);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249
250 /* checks var and eventually tweaks it to something supported,
251 * DO NOT MODIFY PAR */
252 int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
253
254 /* set the video mode according to info->var */
255 int (*fb_set_par)(struct fb_info *info);
256
257 /* set color register */
258 int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
259 unsigned blue, unsigned transp, struct fb_info *info);
260
Benjamin Herrenschmidt71494372005-05-01 08:59:22 -0700261 /* set color registers in batch */
262 int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
263
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 /* blank display */
265 int (*fb_blank)(int blank, struct fb_info *info);
266
267 /* pan display */
268 int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
269
270 /* Draws a rectangle */
271 void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
272 /* Copy data from area to another */
273 void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
274 /* Draws a image to the display */
275 void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
276
277 /* Draws cursor */
278 int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
279
280 /* Rotates the display */
281 void (*fb_rotate)(struct fb_info *info, int angle);
282
283 /* wait for blit idle, optional */
284 int (*fb_sync)(struct fb_info *info);
285
286 /* perform fb specific ioctl (optional) */
Christoph Hellwig67a66802006-01-14 13:21:25 -0800287 int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
288 unsigned long arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289
290 /* Handle 32bit compat ioctl (optional) */
Christoph Hellwig67a66802006-01-14 13:21:25 -0800291 int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
292 unsigned long arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293
294 /* perform fb specific mmap */
Christoph Hellwig216d5262006-01-14 13:21:25 -0800295 int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
Antonino A. Daplas47434842005-12-12 22:17:16 -0800296
Antonino A. Daplas38a3dc52007-05-08 00:39:37 -0700297 /* get capability given var */
298 void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
299 struct fb_var_screeninfo *var);
Dave Airlie4410f392009-06-16 15:34:38 -0700300
301 /* teardown any resources to do with this framebuffer */
302 void (*fb_destroy)(struct fb_info *info);
Jesse Barnesd219adc2010-08-02 12:05:41 -0700303
304 /* called at KDB enter and leave time to prepare the console */
305 int (*fb_debug_enter)(struct fb_info *info);
306 int (*fb_debug_leave)(struct fb_info *info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307};
308
309#ifdef CONFIG_FB_TILEBLITTING
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310#define FB_TILE_CURSOR_NONE 0
311#define FB_TILE_CURSOR_UNDERLINE 1
312#define FB_TILE_CURSOR_LOWER_THIRD 2
313#define FB_TILE_CURSOR_LOWER_HALF 3
314#define FB_TILE_CURSOR_TWO_THIRDS 4
315#define FB_TILE_CURSOR_BLOCK 5
316
317struct fb_tilemap {
318 __u32 width; /* width of each tile in pixels */
319 __u32 height; /* height of each tile in scanlines */
320 __u32 depth; /* color depth of each tile */
321 __u32 length; /* number of tiles in the map */
Jan Beulich2f4516d2005-09-13 01:25:44 -0700322 const __u8 *data; /* actual tile map: a bitmap array, packed
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 to the nearest byte */
324};
325
326struct fb_tilerect {
327 __u32 sx; /* origin in the x-axis */
328 __u32 sy; /* origin in the y-axis */
329 __u32 width; /* number of tiles in the x-axis */
330 __u32 height; /* number of tiles in the y-axis */
331 __u32 index; /* what tile to use: index to tile map */
332 __u32 fg; /* foreground color */
333 __u32 bg; /* background color */
334 __u32 rop; /* raster operation */
335};
336
337struct fb_tilearea {
338 __u32 sx; /* source origin in the x-axis */
339 __u32 sy; /* source origin in the y-axis */
340 __u32 dx; /* destination origin in the x-axis */
341 __u32 dy; /* destination 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};
345
346struct fb_tileblit {
347 __u32 sx; /* origin in the x-axis */
348 __u32 sy; /* origin in the y-axis */
349 __u32 width; /* number of tiles in the x-axis */
350 __u32 height; /* number of tiles in the y-axis */
351 __u32 fg; /* foreground color */
352 __u32 bg; /* background color */
353 __u32 length; /* number of tiles to draw */
354 __u32 *indices; /* array of indices to tile map */
355};
356
357struct fb_tilecursor {
358 __u32 sx; /* cursor position in the x-axis */
359 __u32 sy; /* cursor position in the y-axis */
360 __u32 mode; /* 0 = erase, 1 = draw */
361 __u32 shape; /* see FB_TILE_CURSOR_* */
362 __u32 fg; /* foreground color */
363 __u32 bg; /* background color */
364};
365
366struct fb_tile_ops {
367 /* set tile characteristics */
368 void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
369
370 /* all dimensions from hereon are in terms of tiles */
371
372 /* move a rectangular region of tiles from one area to another*/
373 void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
374 /* fill a rectangular region with a tile */
375 void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
376 /* copy an array of tiles */
377 void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
378 /* cursor */
379 void (*fb_tilecursor)(struct fb_info *info,
380 struct fb_tilecursor *cursor);
Antonino A. Daplas11f11d52007-05-08 00:39:16 -0700381 /* get maximum length of the tile map */
382 int (*fb_get_tilemax)(struct fb_info *info);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383};
384#endif /* CONFIG_FB_TILEBLITTING */
385
386/* FBINFO_* = fb_info.flags bit flags */
387#define FBINFO_MODULE 0x0001 /* Low-level driver is a module */
388#define FBINFO_HWACCEL_DISABLED 0x0002
389 /* When FBINFO_HWACCEL_DISABLED is set:
390 * Hardware acceleration is turned off. Software implementations
391 * of required functions (copyarea(), fillrect(), and imageblit())
392 * takes over; acceleration engine should be in a quiescent state */
393
394/* hints */
Konrad Rzeszutek Wilk7164bb42009-12-03 10:31:56 -0500395#define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396#define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */
397#define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */
398
399/* hardware supported ops */
400/* semantics: when a bit is set, it indicates that the operation is
401 * accelerated by hardware.
402 * required functions will still work even if the bit is not set.
403 * optional functions may not even exist if the flag bit is not set.
404 */
405#define FBINFO_HWACCEL_NONE 0x0000
406#define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */
407#define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */
408#define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */
409#define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */
410#define FBINFO_HWACCEL_XPAN 0x1000 /* optional */
411#define FBINFO_HWACCEL_YPAN 0x2000 /* optional */
412#define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */
413
414#define FBINFO_MISC_USEREVENT 0x10000 /* event request
415 from userspace */
416#define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */
417
Knut Petersen39942fd2005-12-12 22:17:19 -0800418/* A driver may set this flag to indicate that it does want a set_par to be
419 * called every time when fbcon_switch is executed. The advantage is that with
Alexey Dobriyan7f927fc2006-03-28 01:56:53 -0800420 * this flag set you can really be sure that set_par is always called before
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300421 * any of the functions dependent on the correct hardware state or altering
Knut Petersen39942fd2005-12-12 22:17:19 -0800422 * that state, even if you are using some broken X releases. The disadvantage
423 * is that it introduces unwanted delays to every console switch if set_par
424 * is slow. It is a good idea to try this flag in the drivers initialization
425 * code whenever there is a bug report related to switching between X and the
426 * framebuffer console.
427 */
428#define FBINFO_MISC_ALWAYS_SETPAR 0x40000
429
Dave Airlieb26c9492010-06-23 11:35:41 +1000430/* where the fb is a firmware driver, and can be replaced with a proper one */
431#define FBINFO_MISC_FIRMWARE 0x80000
Anton Vorontsove4c690e2008-04-28 02:14:49 -0700432/*
433 * Host and GPU endianness differ.
434 */
435#define FBINFO_FOREIGN_ENDIAN 0x100000
436/*
437 * Big endian math. This is the same flags as above, but with different
438 * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
439 * and host endianness. Drivers should not use this flag.
440 */
441#define FBINFO_BE_MATH 0x100000
442
Jesse Barnes8fd4bd22010-06-23 12:56:12 -0700443/* report to the VT layer that this fb driver can accept forced console
444 output like oopses */
445#define FBINFO_CAN_FORCE_OUTPUT 0x200000
446
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447struct fb_info {
Linus Torvalds698b3682011-05-11 14:49:36 -0700448 atomic_t count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 int node;
450 int flags;
Krzysztof Helt3e680aa2008-10-18 20:27:51 -0700451 struct mutex lock; /* Lock for open/release/ioctl funcs */
Krzysztof Helt537a1bf2009-06-30 11:41:29 -0700452 struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 struct fb_var_screeninfo var; /* Current var */
454 struct fb_fix_screeninfo fix; /* Current fix */
455 struct fb_monspecs monspecs; /* Current Monitor specs */
456 struct work_struct queue; /* Framebuffer event queue */
457 struct fb_pixmap pixmap; /* Image hardware mapper */
458 struct fb_pixmap sprite; /* Cursor hardware mapper */
459 struct fb_cmap cmap; /* Current cmap */
460 struct list_head modelist; /* mode list */
461 struct fb_videomode *mode; /* current mode */
Michael Hanselmann5474c122006-06-25 05:47:08 -0700462
463#ifdef CONFIG_FB_BACKLIGHT
Michael Hanselmann5474c122006-06-25 05:47:08 -0700464 /* assigned backlight device */
Richard Purdie37ce69a2007-02-10 14:10:33 +0000465 /* set before framebuffer registration,
466 remove after unregister */
Michael Hanselmann5474c122006-06-25 05:47:08 -0700467 struct backlight_device *bl_dev;
468
469 /* Backlight level curve */
Richard Purdie37ce69a2007-02-10 14:10:33 +0000470 struct mutex bl_curve_mutex;
Michael Hanselmann5474c122006-06-25 05:47:08 -0700471 u8 bl_curve[FB_BACKLIGHT_LEVELS];
472#endif
Jaya Kumar60b59be2007-05-08 00:37:37 -0700473#ifdef CONFIG_FB_DEFERRED_IO
474 struct delayed_work deferred_work;
475 struct fb_deferred_io *fbdefio;
476#endif
Michael Hanselmann5474c122006-06-25 05:47:08 -0700477
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 struct fb_ops *fbops;
Greg Kroah-Hartman78cde08872006-09-14 07:30:59 -0700479 struct device *device; /* This is the parent */
480 struct device *dev; /* This is this fb device */
Antonino A. Daplas1a6600b2006-10-03 01:14:50 -0700481 int class_flag; /* private sysfs flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482#ifdef CONFIG_FB_TILEBLITTING
483 struct fb_tile_ops *tileops; /* Tile Blitting */
484#endif
485 char __iomem *screen_base; /* Virtual address */
486 unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */
487 void *pseudo_palette; /* Fake palette of 16 colors */
488#define FBINFO_STATE_RUNNING 0
489#define FBINFO_STATE_SUSPENDED 1
490 u32 state; /* Hardware state i.e suspend */
491 void *fbcon_par; /* fbcon use-only private area */
492 /* From here on everything is device dependent */
Dave Airlie4410f392009-06-16 15:34:38 -0700493 void *par;
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300494 /* we need the PCI or similar aperture base/size not
Dave Airlie4410f392009-06-16 15:34:38 -0700495 smem_start/size as smem_start may just be an object
496 allocated inside the aperture so may not actually overlap */
Marcin Slusarz1471ca92010-05-16 17:27:03 +0200497 struct apertures_struct {
498 unsigned int count;
499 struct aperture {
500 resource_size_t base;
501 resource_size_t size;
502 } ranges[0];
503 } *apertures;
Jesse Barnes3cf26672013-02-04 13:37:21 +0000504
505 bool skip_vt_switch; /* no VT switch on suspend/resume required */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506};
507
Marcin Slusarz1471ca92010-05-16 17:27:03 +0200508static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
509 struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
510 + max_num * sizeof(struct aperture), GFP_KERNEL);
Dan Carpenter772a2f92010-07-15 10:39:47 +0200511 if (!a)
512 return NULL;
Marcin Slusarz1471ca92010-05-16 17:27:03 +0200513 a->count = max_num;
514 return a;
515}
516
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517#ifdef MODULE
518#define FBINFO_DEFAULT FBINFO_MODULE
519#else
520#define FBINFO_DEFAULT 0
521#endif
522
523// This will go away
524#define FBINFO_FLAG_MODULE FBINFO_MODULE
525#define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT
526
527/* This will go away
528 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
529 * when it wants to turn the acceleration engine on. This is
530 * really a separate operation, and should be modified via sysfs.
531 * But for now, we leave it broken with the following define
532 */
533#define STUPID_ACCELF_TEXT_SHIT
534
535// This will go away
536#if defined(__sparc__)
537
538/* We map all of our framebuffers such that big-endian accesses
539 * are what we want, so the following is sufficient.
540 */
541
542// This will go away
543#define fb_readb sbus_readb
544#define fb_readw sbus_readw
545#define fb_readl sbus_readl
546#define fb_readq sbus_readq
547#define fb_writeb sbus_writeb
548#define fb_writew sbus_writew
549#define fb_writel sbus_writel
550#define fb_writeq sbus_writeq
551#define fb_memset sbus_memset_io
James Hoganf11b478d2010-10-27 15:33:28 -0700552#define fb_memcpy_fromfb sbus_memcpy_fromio
553#define fb_memcpy_tofb sbus_memcpy_toio
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554
Mike Frysinger00115e62009-06-16 15:34:40 -0700555#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556
557#define fb_readb __raw_readb
558#define fb_readw __raw_readw
559#define fb_readl __raw_readl
560#define fb_readq __raw_readq
561#define fb_writeb __raw_writeb
562#define fb_writew __raw_writew
563#define fb_writel __raw_writel
564#define fb_writeq __raw_writeq
565#define fb_memset memset_io
James Hoganf11b478d2010-10-27 15:33:28 -0700566#define fb_memcpy_fromfb memcpy_fromio
567#define fb_memcpy_tofb memcpy_toio
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568
569#else
570
571#define fb_readb(addr) (*(volatile u8 *) (addr))
572#define fb_readw(addr) (*(volatile u16 *) (addr))
573#define fb_readl(addr) (*(volatile u32 *) (addr))
574#define fb_readq(addr) (*(volatile u64 *) (addr))
575#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
576#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
577#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
578#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
579#define fb_memset memset
James Hoganf11b478d2010-10-27 15:33:28 -0700580#define fb_memcpy_fromfb memcpy
581#define fb_memcpy_tofb memcpy
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582
583#endif
584
Anton Vorontsove4c690e2008-04-28 02:14:49 -0700585#define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0)
586#define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \
587 (val) << (bits))
588#define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \
589 (val) >> (bits))
Antonino A. Daplasbe0d9b62005-12-12 22:17:21 -0800590
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591 /*
592 * `Generic' versions of the frame buffer device operations
593 */
594
595extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
596extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
597extern int fb_blank(struct fb_info *info, int blank);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
599extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
600extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
Antonino A. Daplas68648ed2007-05-08 00:38:57 -0700601/*
602 * Drawing operations where framebuffer is in system RAM
603 */
604extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
605extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
606extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
Antonino A. Daplas09aaf262007-05-08 00:39:03 -0700607extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
608 size_t count, loff_t *ppos);
609extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
610 size_t count, loff_t *ppos);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611
612/* drivers/video/fbmem.c */
613extern int register_framebuffer(struct fb_info *fb_info);
614extern int unregister_framebuffer(struct fb_info *fb_info);
Kay Sieversce880cb2012-01-28 19:57:46 +0000615extern int unlink_framebuffer(struct fb_info *fb_info);
Chris Wilson46eeb2c2013-12-16 15:57:39 +0000616extern int remove_conflicting_framebuffers(struct apertures_struct *a,
617 const char *name, bool primary);
Antonino A. Daplas9c44e5f2005-11-08 21:39:10 -0800618extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
619extern int fb_show_logo(struct fb_info *fb_info, int rotate);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
James Simmonsf1ab5da2005-06-21 17:17:07 -0700621extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 u32 height, u32 shift_high, u32 shift_low, u32 mod);
James Simmonsf1ab5da2005-06-21 17:17:07 -0700623extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624extern void fb_set_suspend(struct fb_info *info, int state);
Antonino A. Daplasb8c90942005-09-09 13:04:37 -0700625extern int fb_get_color_depth(struct fb_var_screeninfo *var,
626 struct fb_fix_screeninfo *fix);
Vincent Stehléa66e62a2013-06-18 16:23:05 +0200627extern int fb_get_options(const char *name, char **option);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628extern int fb_new_modelist(struct fb_info *info);
629
630extern struct fb_info *registered_fb[FB_MAX];
631extern int num_registered_fb;
Geert Uytterhoeven9db71a12007-06-01 00:46:46 -0700632extern struct class *fb_class;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633
Andrew Morton6a7f2822009-03-31 15:25:19 -0700634extern int lock_fb_info(struct fb_info *info);
Andrea Righi1f5e31d2009-02-04 15:12:03 -0800635
636static inline void unlock_fb_info(struct fb_info *info)
637{
638 mutex_unlock(&info->lock);
639}
640
Antonino A. Daplas829e79b2005-09-09 13:10:04 -0700641static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
642 u8 *src, u32 s_pitch, u32 height)
643{
644 int i, j;
645
646 d_pitch -= s_pitch;
647
648 for (i = height; i--; ) {
649 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
650 for (j = 0; j < s_pitch; j++)
651 *dst++ = *src++;
652 dst += d_pitch;
653 }
654}
655
Jaya Kumar60b59be2007-05-08 00:37:37 -0700656/* drivers/video/fb_defio.c */
657extern void fb_deferred_io_init(struct fb_info *info);
Ian Campbelld8474712008-08-20 14:09:23 -0700658extern void fb_deferred_io_open(struct fb_info *info,
659 struct inode *inode,
660 struct file *file);
Jaya Kumar60b59be2007-05-08 00:37:37 -0700661extern void fb_deferred_io_cleanup(struct fb_info *info);
Josef Bacik02c24a82011-07-16 20:44:56 -0400662extern int fb_deferred_io_fsync(struct file *file, loff_t start,
663 loff_t end, int datasync);
Jaya Kumar60b59be2007-05-08 00:37:37 -0700664
Anton Vorontsove4c690e2008-04-28 02:14:49 -0700665static inline bool fb_be_math(struct fb_info *info)
666{
667#ifdef CONFIG_FB_FOREIGN_ENDIAN
668#if defined(CONFIG_FB_BOTH_ENDIAN)
669 return info->flags & FBINFO_BE_MATH;
670#elif defined(CONFIG_FB_BIG_ENDIAN)
671 return true;
672#elif defined(CONFIG_FB_LITTLE_ENDIAN)
673 return false;
674#endif /* CONFIG_FB_BOTH_ENDIAN */
675#else
676#ifdef __BIG_ENDIAN
677 return true;
678#else
679 return false;
680#endif /* __BIG_ENDIAN */
681#endif /* CONFIG_FB_FOREIGN_ENDIAN */
682}
683
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684/* drivers/video/fbsysfs.c */
685extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
686extern void framebuffer_release(struct fb_info *info);
Greg Kroah-Hartman78cde08872006-09-14 07:30:59 -0700687extern int fb_init_device(struct fb_info *fb_info);
688extern void fb_cleanup_device(struct fb_info *head);
Michael Hanselmann5474c122006-06-25 05:47:08 -0700689extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690
691/* drivers/video/fbmon.c */
692#define FB_MAXTIMINGS 0
693#define FB_VSYNCTIMINGS 1
694#define FB_HSYNCTIMINGS 2
695#define FB_DCLKTIMINGS 3
696#define FB_IGNOREMON 0x100
697
698#define FB_MODE_IS_UNKNOWN 0
699#define FB_MODE_IS_DETAILED 1
700#define FB_MODE_IS_STANDARD 2
701#define FB_MODE_IS_VESA 4
702#define FB_MODE_IS_CALCULATED 8
703#define FB_MODE_IS_FIRST 16
704#define FB_MODE_IS_FROM_VAR 32
705
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706extern int fbmon_dpms(const struct fb_info *fb_info);
707extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
708 struct fb_info *info);
709extern int fb_validate_mode(const struct fb_var_screeninfo *var,
710 struct fb_info *info);
711extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
Antonino A. Daplas5e518d72005-09-09 13:04:34 -0700712extern const unsigned char *fb_firmware_edid(struct device *device);
713extern void fb_edid_to_monspecs(unsigned char *edid,
714 struct fb_monspecs *specs);
Erik Gilling9fbbdde2010-11-11 15:44:43 +0100715extern void fb_edid_add_monspecs(unsigned char *edid,
716 struct fb_monspecs *specs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717extern void fb_destroy_modedb(struct fb_videomode *modedb);
Antonino A. Daplas96fe6a22005-09-09 13:09:58 -0700718extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
Dennis Munsiefc5891c2006-10-03 01:14:42 -0700719extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720
Steffen Trumtrar79089042012-11-14 11:12:38 +0100721extern int of_get_fb_videomode(struct device_node *np,
722 struct fb_videomode *fb,
723 int index);
Steffen Trumtrar2db54c72012-11-14 10:55:04 +0100724extern int fb_videomode_from_videomode(const struct videomode *vm,
725 struct fb_videomode *fbmode);
726
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727/* drivers/video/modedb.c */
728#define VESA_MODEDB_SIZE 34
729extern void fb_var_to_videomode(struct fb_videomode *mode,
Geert Uytterhoeven9791d762007-02-12 00:55:19 -0800730 const struct fb_var_screeninfo *var);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
Geert Uytterhoeven9791d762007-02-12 00:55:19 -0800732 const struct fb_videomode *mode);
733extern int fb_mode_is_equal(const struct fb_videomode *mode1,
734 const struct fb_videomode *mode2);
735extern int fb_add_videomode(const struct fb_videomode *mode,
736 struct list_head *head);
737extern void fb_delete_videomode(const struct fb_videomode *mode,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738 struct list_head *head);
Geert Uytterhoeven9791d762007-02-12 00:55:19 -0800739extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
740 struct list_head *head);
741extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
742 struct list_head *head);
743extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
744 struct list_head *head);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745extern void fb_destroy_modelist(struct list_head *head);
Geert Uytterhoeven9791d762007-02-12 00:55:19 -0800746extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 struct list_head *head);
Geert Uytterhoeven9791d762007-02-12 00:55:19 -0800748extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
749 struct list_head *head);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750
751/* drivers/video/fbcmap.c */
752extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
Dan Carpenter1e7c7802010-11-16 12:11:02 +0300753extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754extern void fb_dealloc_cmap(struct fb_cmap *cmap);
Helge Delleradf6b202006-12-08 02:40:27 -0800755extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
756extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
758extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
Helge Delleradf6b202006-12-08 02:40:27 -0800759extern const struct fb_cmap *fb_default_cmap(int len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760extern void fb_invert_cmaps(void);
761
762struct fb_videomode {
763 const char *name; /* optional */
764 u32 refresh; /* optional */
765 u32 xres;
766 u32 yres;
767 u32 pixclock;
768 u32 left_margin;
769 u32 right_margin;
770 u32 upper_margin;
771 u32 lower_margin;
772 u32 hsync_len;
773 u32 vsync_len;
774 u32 sync;
775 u32 vmode;
776 u32 flag;
777};
778
Geert Uytterhoeven9a054fb2007-10-16 01:29:51 -0700779extern const char *fb_mode_option;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780extern const struct fb_videomode vesa_modes[];
Guennadi Liakhovetski0ad83f62010-11-11 15:45:04 +0100781extern const struct fb_videomode cea_modes[64];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782
783struct fb_modelist {
784 struct list_head list;
785 struct fb_videomode mode;
786};
787
788extern int fb_find_mode(struct fb_var_screeninfo *var,
789 struct fb_info *info, const char *mode_option,
790 const struct fb_videomode *db,
791 unsigned int dbsize,
792 const struct fb_videomode *default_mode,
793 unsigned int default_bpp);
794
Joe Perchesf51a07d2013-09-19 18:35:54 -0700795/* Convenience logging macros */
796#define fb_err(fb_info, fmt, ...) \
797 pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
798#define fb_notice(info, fmt, ...) \
799 pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
800#define fb_warn(fb_info, fmt, ...) \
801 pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
802#define fb_info(fb_info, fmt, ...) \
803 pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
804#define fb_dbg(fb_info, fmt, ...) \
805 pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
806
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807#endif /* _LINUX_FB_H */