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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _LINUX_FB_H |
3 | #define _LINUX_FB_H | |
4 | ||
0189cb57 | 5 | #include <linux/refcount.h> |
d219adc1 | 6 | #include <linux/kgdb.h> |
607ca46e | 7 | #include <uapi/linux/fb.h> |
1da177e4 | 8 | |
1da177e4 | 9 | #define FBIO_CURSOR _IOWR('F', 0x08, struct fb_cursor_user) |
1da177e4 LT |
10 | |
11 | #include <linux/fs.h> | |
12 | #include <linux/init.h> | |
1da177e4 | 13 | #include <linux/workqueue.h> |
1da177e4 LT |
14 | #include <linux/notifier.h> |
15 | #include <linux/list.h> | |
2b257425 | 16 | #include <linux/backlight.h> |
1471ca9a | 17 | #include <linux/slab.h> |
1da177e4 LT |
18 | #include <asm/io.h> |
19 | ||
20 | struct vm_area_struct; | |
21 | struct fb_info; | |
22 | struct device; | |
23 | struct file; | |
2db54c72 | 24 | struct videomode; |
79089044 | 25 | struct device_node; |
1da177e4 LT |
26 | |
27 | /* Definitions below are used in the parsed monitor specs */ | |
28 | #define FB_DPMS_ACTIVE_OFF 1 | |
29 | #define FB_DPMS_SUSPEND 2 | |
30 | #define FB_DPMS_STANDBY 4 | |
31 | ||
32 | #define FB_DISP_DDI 1 | |
33 | #define FB_DISP_ANA_700_300 2 | |
34 | #define FB_DISP_ANA_714_286 4 | |
35 | #define FB_DISP_ANA_1000_400 8 | |
36 | #define FB_DISP_ANA_700_000 16 | |
37 | ||
38 | #define FB_DISP_MONO 32 | |
39 | #define FB_DISP_RGB 64 | |
40 | #define FB_DISP_MULTI 128 | |
41 | #define FB_DISP_UNKNOWN 256 | |
42 | ||
43 | #define FB_SIGNAL_NONE 0 | |
44 | #define FB_SIGNAL_BLANK_BLANK 1 | |
45 | #define FB_SIGNAL_SEPARATE 2 | |
46 | #define FB_SIGNAL_COMPOSITE 4 | |
47 | #define FB_SIGNAL_SYNC_ON_GREEN 8 | |
48 | #define FB_SIGNAL_SERRATION_ON 16 | |
49 | ||
50 | #define FB_MISC_PRIM_COLOR 1 | |
51 | #define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */ | |
e6853aaf | 52 | #define FB_MISC_HDMI 4 |
1da177e4 LT |
53 | struct fb_chroma { |
54 | __u32 redx; /* in fraction of 1024 */ | |
55 | __u32 greenx; | |
56 | __u32 bluex; | |
57 | __u32 whitex; | |
58 | __u32 redy; | |
59 | __u32 greeny; | |
60 | __u32 bluey; | |
61 | __u32 whitey; | |
62 | }; | |
63 | ||
64 | struct fb_monspecs { | |
65 | struct fb_chroma chroma; | |
66 | struct fb_videomode *modedb; /* mode database */ | |
67 | __u8 manufacturer[4]; /* Manufacturer */ | |
68 | __u8 monitor[14]; /* Monitor String */ | |
69 | __u8 serial_no[14]; /* Serial Number */ | |
70 | __u8 ascii[14]; /* ? */ | |
71 | __u32 modedb_len; /* mode database length */ | |
72 | __u32 model; /* Monitor Model */ | |
73 | __u32 serial; /* Serial Number - Integer */ | |
74 | __u32 year; /* Year manufactured */ | |
75 | __u32 week; /* Week Manufactured */ | |
76 | __u32 hfmin; /* hfreq lower limit (Hz) */ | |
77 | __u32 hfmax; /* hfreq upper limit (Hz) */ | |
78 | __u32 dclkmin; /* pixelclock lower limit (Hz) */ | |
79 | __u32 dclkmax; /* pixelclock upper limit (Hz) */ | |
80 | __u16 input; /* display type - see FB_DISP_* */ | |
81 | __u16 dpms; /* DPMS support - see FB_DPMS_ */ | |
82 | __u16 signal; /* Signal Type - see FB_SIGNAL_* */ | |
83 | __u16 vfmin; /* vfreq lower limit (Hz) */ | |
84 | __u16 vfmax; /* vfreq upper limit (Hz) */ | |
85 | __u16 gamma; /* Gamma - in fractions of 100 */ | |
86 | __u16 gtf : 1; /* supports GTF */ | |
87 | __u16 misc; /* Misc flags - see FB_MISC_* */ | |
88 | __u8 version; /* EDID version... */ | |
89 | __u8 revision; /* ...and revision */ | |
90 | __u8 max_x; /* Maximum horizontal size (cm) */ | |
91 | __u8 max_y; /* Maximum vertical size (cm) */ | |
92 | }; | |
93 | ||
94 | struct fb_cmap_user { | |
95 | __u32 start; /* First entry */ | |
96 | __u32 len; /* Number of entries */ | |
97 | __u16 __user *red; /* Red values */ | |
98 | __u16 __user *green; | |
99 | __u16 __user *blue; | |
100 | __u16 __user *transp; /* transparency, can be NULL */ | |
101 | }; | |
102 | ||
103 | struct fb_image_user { | |
104 | __u32 dx; /* Where to place image */ | |
105 | __u32 dy; | |
106 | __u32 width; /* Size of image */ | |
107 | __u32 height; | |
108 | __u32 fg_color; /* Only used when a mono bitmap */ | |
109 | __u32 bg_color; | |
110 | __u8 depth; /* Depth of the image */ | |
111 | const char __user *data; /* Pointer to image data */ | |
112 | struct fb_cmap_user cmap; /* color map info */ | |
113 | }; | |
114 | ||
115 | struct fb_cursor_user { | |
116 | __u16 set; /* what to set */ | |
117 | __u16 enable; /* cursor on/off */ | |
118 | __u16 rop; /* bitop operation */ | |
119 | const char __user *mask; /* cursor mask bits */ | |
120 | struct fbcurpos hot; /* cursor hot spot */ | |
121 | struct fb_image_user image; /* Cursor image */ | |
122 | }; | |
123 | ||
124 | /* | |
125 | * Register/unregister for framebuffer events | |
126 | */ | |
127 | ||
2d05f56a | 128 | /* The resolution of the passed in fb_info about to change */ |
1da177e4 | 129 | #define FB_EVENT_MODE_CHANGE 0x01 |
97b67986 DV |
130 | |
131 | #ifdef CONFIG_GUMSTIX_AM200EPD | |
132 | /* only used by mach-pxa/am200epd.c */ | |
1da177e4 | 133 | #define FB_EVENT_FB_REGISTERED 0x05 |
e614b18d | 134 | #define FB_EVENT_FB_UNREGISTERED 0x06 |
97b67986 DV |
135 | #endif |
136 | ||
7a625549 | 137 | /* A display blank is requested */ |
e614b18d | 138 | #define FB_EVENT_BLANK 0x09 |
1da177e4 LT |
139 | |
140 | struct fb_event { | |
141 | struct fb_info *info; | |
142 | void *data; | |
143 | }; | |
144 | ||
38a3dc51 AD |
145 | struct fb_blit_caps { |
146 | u32 x; | |
147 | u32 y; | |
148 | u32 len; | |
149 | u32 flags; | |
150 | }; | |
1da177e4 | 151 | |
5ec96538 | 152 | #ifdef CONFIG_FB_NOTIFY |
1da177e4 LT |
153 | extern int fb_register_client(struct notifier_block *nb); |
154 | extern int fb_unregister_client(struct notifier_block *nb); | |
256154fb | 155 | extern int fb_notifier_call_chain(unsigned long val, void *v); |
5ec96538 EG |
156 | #else |
157 | static inline int fb_register_client(struct notifier_block *nb) | |
158 | { | |
159 | return 0; | |
160 | }; | |
161 | ||
162 | static inline int fb_unregister_client(struct notifier_block *nb) | |
163 | { | |
164 | return 0; | |
165 | }; | |
166 | ||
167 | static inline int fb_notifier_call_chain(unsigned long val, void *v) | |
168 | { | |
169 | return 0; | |
170 | }; | |
171 | #endif | |
172 | ||
1da177e4 LT |
173 | /* |
174 | * Pixmap structure definition | |
175 | * | |
176 | * The purpose of this structure is to translate data | |
177 | * from the hardware independent format of fbdev to what | |
178 | * format the hardware needs. | |
179 | */ | |
180 | ||
181 | #define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */ | |
182 | #define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */ | |
183 | #define FB_PIXMAP_IO 4 /* memory is iomapped */ | |
184 | #define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */ | |
185 | ||
186 | struct fb_pixmap { | |
187 | u8 *addr; /* pointer to memory */ | |
188 | u32 size; /* size of buffer in bytes */ | |
189 | u32 offset; /* current offset to buffer */ | |
190 | u32 buf_align; /* byte alignment of each bitmap */ | |
191 | u32 scan_align; /* alignment per scanline */ | |
f5a9951c | 192 | u32 access_align; /* alignment per read/write (bits) */ |
1da177e4 | 193 | u32 flags; /* see FB_PIXMAP_* */ |
bf26ad72 AD |
194 | u32 blit_x; /* supported bit block dimensions (1-32)*/ |
195 | u32 blit_y; /* Format: blit_x = 1 << (width - 1) */ | |
196 | /* blit_y = 1 << (height - 1) */ | |
197 | /* if 0, will be set to 0xffffffff (all)*/ | |
1da177e4 | 198 | /* access methods */ |
f5a9951c JS |
199 | void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size); |
200 | void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size); | |
1da177e4 LT |
201 | }; |
202 | ||
60b59bea JK |
203 | #ifdef CONFIG_FB_DEFERRED_IO |
204 | struct fb_deferred_io { | |
205 | /* delay between mkwrite and deferred handler */ | |
206 | unsigned long delay; | |
207 | struct mutex lock; /* mutex that protects the page list */ | |
208 | struct list_head pagelist; /* list of touched pages */ | |
209 | /* callback */ | |
1f45f9db | 210 | void (*first_io)(struct fb_info *info); |
60b59bea JK |
211 | void (*deferred_io)(struct fb_info *info, struct list_head *pagelist); |
212 | }; | |
213 | #endif | |
1da177e4 LT |
214 | |
215 | /* | |
216 | * Frame buffer operations | |
217 | * | |
218 | * LOCKING NOTE: those functions must _ALL_ be called with the console | |
b3c2ffd5 | 219 | * semaphore held, this is the only suitable locking mechanism we have |
1da177e4 | 220 | * in 2.6. Some may be called at interrupt time at this point though. |
d219adc1 JB |
221 | * |
222 | * The exception to this is the debug related hooks. Putting the fb | |
223 | * into a debug state (e.g. flipping to the kernel console) and restoring | |
224 | * it must be done in a lock-free manner, so low level drivers should | |
225 | * keep track of the initial console (if applicable) and may need to | |
226 | * perform direct, unlocked hardware writes in these hooks. | |
1da177e4 LT |
227 | */ |
228 | ||
229 | struct fb_ops { | |
230 | /* open/release and usage marking */ | |
231 | struct module *owner; | |
232 | int (*fb_open)(struct fb_info *info, int user); | |
233 | int (*fb_release)(struct fb_info *info, int user); | |
234 | ||
235 | /* For framebuffers with strange non linear layouts or that do not | |
236 | * work with normal memory mapped access | |
237 | */ | |
3f9b0880 AD |
238 | ssize_t (*fb_read)(struct fb_info *info, char __user *buf, |
239 | size_t count, loff_t *ppos); | |
240 | ssize_t (*fb_write)(struct fb_info *info, const char __user *buf, | |
241 | size_t count, loff_t *ppos); | |
1da177e4 LT |
242 | |
243 | /* checks var and eventually tweaks it to something supported, | |
244 | * DO NOT MODIFY PAR */ | |
245 | int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info); | |
246 | ||
247 | /* set the video mode according to info->var */ | |
248 | int (*fb_set_par)(struct fb_info *info); | |
249 | ||
250 | /* set color register */ | |
251 | int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green, | |
252 | unsigned blue, unsigned transp, struct fb_info *info); | |
253 | ||
71494376 BH |
254 | /* set color registers in batch */ |
255 | int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info); | |
256 | ||
1da177e4 LT |
257 | /* blank display */ |
258 | int (*fb_blank)(int blank, struct fb_info *info); | |
259 | ||
260 | /* pan display */ | |
261 | int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info); | |
262 | ||
263 | /* Draws a rectangle */ | |
264 | void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect); | |
265 | /* Copy data from area to another */ | |
266 | void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region); | |
267 | /* Draws a image to the display */ | |
268 | void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image); | |
269 | ||
270 | /* Draws cursor */ | |
271 | int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor); | |
272 | ||
1da177e4 LT |
273 | /* wait for blit idle, optional */ |
274 | int (*fb_sync)(struct fb_info *info); | |
275 | ||
276 | /* perform fb specific ioctl (optional) */ | |
67a6680d CH |
277 | int (*fb_ioctl)(struct fb_info *info, unsigned int cmd, |
278 | unsigned long arg); | |
1da177e4 LT |
279 | |
280 | /* Handle 32bit compat ioctl (optional) */ | |
67a6680d CH |
281 | int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd, |
282 | unsigned long arg); | |
1da177e4 LT |
283 | |
284 | /* perform fb specific mmap */ | |
216d526c | 285 | int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma); |
47434847 | 286 | |
38a3dc51 AD |
287 | /* get capability given var */ |
288 | void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps, | |
289 | struct fb_var_screeninfo *var); | |
4410f391 DA |
290 | |
291 | /* teardown any resources to do with this framebuffer */ | |
292 | void (*fb_destroy)(struct fb_info *info); | |
d219adc1 JB |
293 | |
294 | /* called at KDB enter and leave time to prepare the console */ | |
295 | int (*fb_debug_enter)(struct fb_info *info); | |
296 | int (*fb_debug_leave)(struct fb_info *info); | |
1da177e4 LT |
297 | }; |
298 | ||
299 | #ifdef CONFIG_FB_TILEBLITTING | |
1da177e4 LT |
300 | #define FB_TILE_CURSOR_NONE 0 |
301 | #define FB_TILE_CURSOR_UNDERLINE 1 | |
302 | #define FB_TILE_CURSOR_LOWER_THIRD 2 | |
303 | #define FB_TILE_CURSOR_LOWER_HALF 3 | |
304 | #define FB_TILE_CURSOR_TWO_THIRDS 4 | |
305 | #define FB_TILE_CURSOR_BLOCK 5 | |
306 | ||
307 | struct fb_tilemap { | |
308 | __u32 width; /* width of each tile in pixels */ | |
309 | __u32 height; /* height of each tile in scanlines */ | |
310 | __u32 depth; /* color depth of each tile */ | |
311 | __u32 length; /* number of tiles in the map */ | |
2f4516db | 312 | const __u8 *data; /* actual tile map: a bitmap array, packed |
1da177e4 LT |
313 | to the nearest byte */ |
314 | }; | |
315 | ||
316 | struct fb_tilerect { | |
317 | __u32 sx; /* origin in the x-axis */ | |
318 | __u32 sy; /* origin in the y-axis */ | |
319 | __u32 width; /* number of tiles in the x-axis */ | |
320 | __u32 height; /* number of tiles in the y-axis */ | |
321 | __u32 index; /* what tile to use: index to tile map */ | |
322 | __u32 fg; /* foreground color */ | |
323 | __u32 bg; /* background color */ | |
324 | __u32 rop; /* raster operation */ | |
325 | }; | |
326 | ||
327 | struct fb_tilearea { | |
328 | __u32 sx; /* source origin in the x-axis */ | |
329 | __u32 sy; /* source origin in the y-axis */ | |
330 | __u32 dx; /* destination origin in the x-axis */ | |
331 | __u32 dy; /* destination origin in the y-axis */ | |
332 | __u32 width; /* number of tiles in the x-axis */ | |
333 | __u32 height; /* number of tiles in the y-axis */ | |
334 | }; | |
335 | ||
336 | struct fb_tileblit { | |
337 | __u32 sx; /* origin in the x-axis */ | |
338 | __u32 sy; /* origin in the y-axis */ | |
339 | __u32 width; /* number of tiles in the x-axis */ | |
340 | __u32 height; /* number of tiles in the y-axis */ | |
341 | __u32 fg; /* foreground color */ | |
342 | __u32 bg; /* background color */ | |
343 | __u32 length; /* number of tiles to draw */ | |
344 | __u32 *indices; /* array of indices to tile map */ | |
345 | }; | |
346 | ||
347 | struct fb_tilecursor { | |
348 | __u32 sx; /* cursor position in the x-axis */ | |
349 | __u32 sy; /* cursor position in the y-axis */ | |
350 | __u32 mode; /* 0 = erase, 1 = draw */ | |
351 | __u32 shape; /* see FB_TILE_CURSOR_* */ | |
352 | __u32 fg; /* foreground color */ | |
353 | __u32 bg; /* background color */ | |
354 | }; | |
355 | ||
356 | struct fb_tile_ops { | |
357 | /* set tile characteristics */ | |
358 | void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map); | |
359 | ||
360 | /* all dimensions from hereon are in terms of tiles */ | |
361 | ||
362 | /* move a rectangular region of tiles from one area to another*/ | |
363 | void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area); | |
364 | /* fill a rectangular region with a tile */ | |
365 | void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect); | |
366 | /* copy an array of tiles */ | |
367 | void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit); | |
368 | /* cursor */ | |
369 | void (*fb_tilecursor)(struct fb_info *info, | |
370 | struct fb_tilecursor *cursor); | |
11f11d52 AD |
371 | /* get maximum length of the tile map */ |
372 | int (*fb_get_tilemax)(struct fb_info *info); | |
1da177e4 LT |
373 | }; |
374 | #endif /* CONFIG_FB_TILEBLITTING */ | |
375 | ||
376 | /* FBINFO_* = fb_info.flags bit flags */ | |
376b3ff5 | 377 | #define FBINFO_DEFAULT 0 |
1da177e4 LT |
378 | #define FBINFO_HWACCEL_DISABLED 0x0002 |
379 | /* When FBINFO_HWACCEL_DISABLED is set: | |
380 | * Hardware acceleration is turned off. Software implementations | |
381 | * of required functions (copyarea(), fillrect(), and imageblit()) | |
382 | * takes over; acceleration engine should be in a quiescent state */ | |
383 | ||
384 | /* hints */ | |
7164bb43 | 385 | #define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */ |
1da177e4 LT |
386 | #define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */ |
387 | #define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */ | |
388 | ||
389 | /* hardware supported ops */ | |
390 | /* semantics: when a bit is set, it indicates that the operation is | |
391 | * accelerated by hardware. | |
392 | * required functions will still work even if the bit is not set. | |
393 | * optional functions may not even exist if the flag bit is not set. | |
394 | */ | |
395 | #define FBINFO_HWACCEL_NONE 0x0000 | |
396 | #define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */ | |
397 | #define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */ | |
398 | #define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */ | |
399 | #define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */ | |
400 | #define FBINFO_HWACCEL_XPAN 0x1000 /* optional */ | |
401 | #define FBINFO_HWACCEL_YPAN 0x2000 /* optional */ | |
402 | #define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */ | |
403 | ||
1da177e4 LT |
404 | #define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */ |
405 | ||
39942fd8 KP |
406 | /* A driver may set this flag to indicate that it does want a set_par to be |
407 | * called every time when fbcon_switch is executed. The advantage is that with | |
7f927fcc | 408 | * this flag set you can really be sure that set_par is always called before |
25985edc | 409 | * any of the functions dependent on the correct hardware state or altering |
39942fd8 KP |
410 | * that state, even if you are using some broken X releases. The disadvantage |
411 | * is that it introduces unwanted delays to every console switch if set_par | |
412 | * is slow. It is a good idea to try this flag in the drivers initialization | |
413 | * code whenever there is a bug report related to switching between X and the | |
414 | * framebuffer console. | |
415 | */ | |
416 | #define FBINFO_MISC_ALWAYS_SETPAR 0x40000 | |
417 | ||
b26c9497 DA |
418 | /* where the fb is a firmware driver, and can be replaced with a proper one */ |
419 | #define FBINFO_MISC_FIRMWARE 0x80000 | |
e4c690e0 AV |
420 | /* |
421 | * Host and GPU endianness differ. | |
422 | */ | |
423 | #define FBINFO_FOREIGN_ENDIAN 0x100000 | |
424 | /* | |
425 | * Big endian math. This is the same flags as above, but with different | |
426 | * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag | |
427 | * and host endianness. Drivers should not use this flag. | |
428 | */ | |
429 | #define FBINFO_BE_MATH 0x100000 | |
da6c7707 DV |
430 | /* |
431 | * Hide smem_start in the FBIOGET_FSCREENINFO IOCTL. This is used by modern DRM | |
432 | * drivers to stop userspace from trying to share buffers behind the kernel's | |
433 | * back. Instead dma-buf based buffer sharing should be used. | |
434 | */ | |
435 | #define FBINFO_HIDE_SMEM_START 0x200000 | |
436 | ||
e4c690e0 | 437 | |
1da177e4 | 438 | struct fb_info { |
0189cb57 | 439 | refcount_t count; |
1da177e4 LT |
440 | int node; |
441 | int flags; | |
c9e6a364 HG |
442 | /* |
443 | * -1 by default, set to a FB_ROTATE_* value by the driver, if it knows | |
444 | * a lcd is not mounted upright and fbcon should rotate to compensate. | |
445 | */ | |
446 | int fbcon_rotate_hint; | |
3e680aae | 447 | struct mutex lock; /* Lock for open/release/ioctl funcs */ |
537a1bf0 | 448 | struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */ |
1da177e4 LT |
449 | struct fb_var_screeninfo var; /* Current var */ |
450 | struct fb_fix_screeninfo fix; /* Current fix */ | |
451 | struct fb_monspecs monspecs; /* Current Monitor specs */ | |
452 | struct work_struct queue; /* Framebuffer event queue */ | |
453 | struct fb_pixmap pixmap; /* Image hardware mapper */ | |
454 | struct fb_pixmap sprite; /* Cursor hardware mapper */ | |
455 | struct fb_cmap cmap; /* Current cmap */ | |
456 | struct list_head modelist; /* mode list */ | |
457 | struct fb_videomode *mode; /* current mode */ | |
5474c120 | 458 | |
b4a1ed0c | 459 | #if IS_ENABLED(CONFIG_FB_BACKLIGHT) |
5474c120 | 460 | /* assigned backlight device */ |
2d05f56a | 461 | /* set before framebuffer registration, |
37ce69a5 | 462 | remove after unregister */ |
5474c120 MH |
463 | struct backlight_device *bl_dev; |
464 | ||
465 | /* Backlight level curve */ | |
2d05f56a | 466 | struct mutex bl_curve_mutex; |
5474c120 MH |
467 | u8 bl_curve[FB_BACKLIGHT_LEVELS]; |
468 | #endif | |
60b59bea JK |
469 | #ifdef CONFIG_FB_DEFERRED_IO |
470 | struct delayed_work deferred_work; | |
471 | struct fb_deferred_io *fbdefio; | |
472 | #endif | |
5474c120 | 473 | |
bf9e25ec | 474 | const struct fb_ops *fbops; |
78cde088 GKH |
475 | struct device *device; /* This is the parent */ |
476 | struct device *dev; /* This is this fb device */ | |
1a6600be | 477 | int class_flag; /* private sysfs flags */ |
1da177e4 LT |
478 | #ifdef CONFIG_FB_TILEBLITTING |
479 | struct fb_tile_ops *tileops; /* Tile Blitting */ | |
480 | #endif | |
17a7b0b4 LS |
481 | union { |
482 | char __iomem *screen_base; /* Virtual address */ | |
483 | char *screen_buffer; | |
484 | }; | |
2d05f56a TZ |
485 | unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */ |
486 | void *pseudo_palette; /* Fake palette of 16 colors */ | |
1da177e4 LT |
487 | #define FBINFO_STATE_RUNNING 0 |
488 | #define FBINFO_STATE_SUSPENDED 1 | |
489 | u32 state; /* Hardware state i.e suspend */ | |
490 | void *fbcon_par; /* fbcon use-only private area */ | |
491 | /* From here on everything is device dependent */ | |
4410f391 | 492 | void *par; |
25985edc | 493 | /* we need the PCI or similar aperture base/size not |
4410f391 DA |
494 | smem_start/size as smem_start may just be an object |
495 | allocated inside the aperture so may not actually overlap */ | |
1471ca9a MS |
496 | struct apertures_struct { |
497 | unsigned int count; | |
498 | struct aperture { | |
499 | resource_size_t base; | |
500 | resource_size_t size; | |
501 | } ranges[0]; | |
502 | } *apertures; | |
3cf2667b JB |
503 | |
504 | bool skip_vt_switch; /* no VT switch on suspend/resume required */ | |
1da177e4 LT |
505 | }; |
506 | ||
1471ca9a | 507 | static inline struct apertures_struct *alloc_apertures(unsigned int max_num) { |
17d8dcf5 GS |
508 | struct apertures_struct *a; |
509 | ||
510 | a = kzalloc(struct_size(a, ranges, max_num), GFP_KERNEL); | |
772a2f9b DC |
511 | if (!a) |
512 | return NULL; | |
1471ca9a MS |
513 | a->count = max_num; |
514 | return a; | |
515 | } | |
516 | ||
1da177e4 LT |
517 | #define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT |
518 | ||
519 | /* This will go away | |
520 | * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags | |
521 | * when it wants to turn the acceleration engine on. This is | |
522 | * really a separate operation, and should be modified via sysfs. | |
523 | * But for now, we leave it broken with the following define | |
524 | */ | |
525 | #define STUPID_ACCELF_TEXT_SHIT | |
526 | ||
527 | // This will go away | |
528 | #if defined(__sparc__) | |
529 | ||
530 | /* We map all of our framebuffers such that big-endian accesses | |
531 | * are what we want, so the following is sufficient. | |
532 | */ | |
533 | ||
534 | // This will go away | |
535 | #define fb_readb sbus_readb | |
536 | #define fb_readw sbus_readw | |
537 | #define fb_readl sbus_readl | |
538 | #define fb_readq sbus_readq | |
539 | #define fb_writeb sbus_writeb | |
540 | #define fb_writew sbus_writew | |
541 | #define fb_writel sbus_writel | |
542 | #define fb_writeq sbus_writeq | |
543 | #define fb_memset sbus_memset_io | |
f11b478d JH |
544 | #define fb_memcpy_fromfb sbus_memcpy_fromio |
545 | #define fb_memcpy_tofb sbus_memcpy_toio | |
1da177e4 | 546 | |
f1b95b71 JZ |
547 | #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || \ |
548 | defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || \ | |
e3ed8b43 | 549 | defined(__arm__) || defined(__aarch64__) |
1da177e4 LT |
550 | |
551 | #define fb_readb __raw_readb | |
552 | #define fb_readw __raw_readw | |
553 | #define fb_readl __raw_readl | |
554 | #define fb_readq __raw_readq | |
555 | #define fb_writeb __raw_writeb | |
556 | #define fb_writew __raw_writew | |
557 | #define fb_writel __raw_writel | |
558 | #define fb_writeq __raw_writeq | |
559 | #define fb_memset memset_io | |
f11b478d JH |
560 | #define fb_memcpy_fromfb memcpy_fromio |
561 | #define fb_memcpy_tofb memcpy_toio | |
1da177e4 LT |
562 | |
563 | #else | |
564 | ||
565 | #define fb_readb(addr) (*(volatile u8 *) (addr)) | |
566 | #define fb_readw(addr) (*(volatile u16 *) (addr)) | |
567 | #define fb_readl(addr) (*(volatile u32 *) (addr)) | |
568 | #define fb_readq(addr) (*(volatile u64 *) (addr)) | |
569 | #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b)) | |
570 | #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b)) | |
571 | #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b)) | |
572 | #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b)) | |
573 | #define fb_memset memset | |
f11b478d JH |
574 | #define fb_memcpy_fromfb memcpy |
575 | #define fb_memcpy_tofb memcpy | |
1da177e4 | 576 | |
be0d9b6c AD |
577 | #endif |
578 | ||
e4c690e0 AV |
579 | #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0) |
580 | #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \ | |
581 | (val) << (bits)) | |
582 | #define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \ | |
583 | (val) >> (bits)) | |
1da177e4 LT |
584 | |
585 | /* | |
586 | * `Generic' versions of the frame buffer device operations | |
587 | */ | |
588 | ||
2d05f56a TZ |
589 | extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); |
590 | extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); | |
1da177e4 | 591 | extern int fb_blank(struct fb_info *info, int blank); |
2d05f56a TZ |
592 | extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); |
593 | extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); | |
1da177e4 | 594 | extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image); |
68648ed1 AD |
595 | /* |
596 | * Drawing operations where framebuffer is in system RAM | |
597 | */ | |
598 | extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect); | |
599 | extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area); | |
600 | extern void sys_imageblit(struct fb_info *info, const struct fb_image *image); | |
09aaf268 AD |
601 | extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf, |
602 | size_t count, loff_t *ppos); | |
603 | extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, | |
604 | size_t count, loff_t *ppos); | |
1da177e4 LT |
605 | |
606 | /* drivers/video/fbmem.c */ | |
607 | extern int register_framebuffer(struct fb_info *fb_info); | |
deb00d27 | 608 | extern void unregister_framebuffer(struct fb_info *fb_info); |
0a845969 | 609 | extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, |
4d18975c | 610 | const char *name); |
46eeb2c1 CW |
611 | extern int remove_conflicting_framebuffers(struct apertures_struct *a, |
612 | const char *name, bool primary); | |
9c44e5f6 AD |
613 | extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); |
614 | extern int fb_show_logo(struct fb_info *fb_info, int rotate); | |
1da177e4 | 615 | extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size); |
f1ab5dac | 616 | extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, |
1da177e4 | 617 | u32 height, u32 shift_high, u32 shift_low, u32 mod); |
f1ab5dac | 618 | extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height); |
1da177e4 | 619 | extern void fb_set_suspend(struct fb_info *info, int state); |
b8c90945 AD |
620 | extern int fb_get_color_depth(struct fb_var_screeninfo *var, |
621 | struct fb_fix_screeninfo *fix); | |
a66e62ae | 622 | extern int fb_get_options(const char *name, char **option); |
1da177e4 LT |
623 | extern int fb_new_modelist(struct fb_info *info); |
624 | ||
625 | extern struct fb_info *registered_fb[FB_MAX]; | |
626 | extern int num_registered_fb; | |
890d14d2 | 627 | extern bool fb_center_logo; |
691f50ab | 628 | extern int fb_logo_count; |
9db71a18 | 629 | extern struct class *fb_class; |
1da177e4 | 630 | |
10ac8688 YX |
631 | #define for_each_registered_fb(i) \ |
632 | for (i = 0; i < FB_MAX; i++) \ | |
633 | if (!registered_fb[i]) {} else | |
634 | ||
cf4a3ae4 DV |
635 | static inline void lock_fb_info(struct fb_info *info) |
636 | { | |
637 | mutex_lock(&info->lock); | |
638 | } | |
1f5e31d7 AR |
639 | |
640 | static inline void unlock_fb_info(struct fb_info *info) | |
641 | { | |
642 | mutex_unlock(&info->lock); | |
643 | } | |
644 | ||
829e79b6 AD |
645 | static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, |
646 | u8 *src, u32 s_pitch, u32 height) | |
647 | { | |
ee346873 | 648 | u32 i, j; |
829e79b6 AD |
649 | |
650 | d_pitch -= s_pitch; | |
651 | ||
652 | for (i = height; i--; ) { | |
653 | /* s_pitch is a few bytes at the most, memcpy is suboptimal */ | |
654 | for (j = 0; j < s_pitch; j++) | |
655 | *dst++ = *src++; | |
656 | dst += d_pitch; | |
657 | } | |
658 | } | |
659 | ||
60b59bea | 660 | /* drivers/video/fb_defio.c */ |
ba026334 | 661 | int fb_deferred_io_mmap(struct fb_info *info, struct vm_area_struct *vma); |
60b59bea | 662 | extern void fb_deferred_io_init(struct fb_info *info); |
0b78f8bc MW |
663 | extern void fb_deferred_io_open(struct fb_info *info, |
664 | struct inode *inode, | |
665 | struct file *file); | |
60b59bea | 666 | extern void fb_deferred_io_cleanup(struct fb_info *info); |
02c24a82 JB |
667 | extern int fb_deferred_io_fsync(struct file *file, loff_t start, |
668 | loff_t end, int datasync); | |
60b59bea | 669 | |
e4c690e0 AV |
670 | static inline bool fb_be_math(struct fb_info *info) |
671 | { | |
672 | #ifdef CONFIG_FB_FOREIGN_ENDIAN | |
673 | #if defined(CONFIG_FB_BOTH_ENDIAN) | |
674 | return info->flags & FBINFO_BE_MATH; | |
675 | #elif defined(CONFIG_FB_BIG_ENDIAN) | |
676 | return true; | |
677 | #elif defined(CONFIG_FB_LITTLE_ENDIAN) | |
678 | return false; | |
679 | #endif /* CONFIG_FB_BOTH_ENDIAN */ | |
680 | #else | |
681 | #ifdef __BIG_ENDIAN | |
682 | return true; | |
683 | #else | |
684 | return false; | |
685 | #endif /* __BIG_ENDIAN */ | |
686 | #endif /* CONFIG_FB_FOREIGN_ENDIAN */ | |
687 | } | |
688 | ||
1da177e4 LT |
689 | /* drivers/video/fbsysfs.c */ |
690 | extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev); | |
691 | extern void framebuffer_release(struct fb_info *info); | |
78cde088 GKH |
692 | extern int fb_init_device(struct fb_info *fb_info); |
693 | extern void fb_cleanup_device(struct fb_info *head); | |
5474c120 | 694 | extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max); |
1da177e4 LT |
695 | |
696 | /* drivers/video/fbmon.c */ | |
697 | #define FB_MAXTIMINGS 0 | |
698 | #define FB_VSYNCTIMINGS 1 | |
699 | #define FB_HSYNCTIMINGS 2 | |
700 | #define FB_DCLKTIMINGS 3 | |
701 | #define FB_IGNOREMON 0x100 | |
702 | ||
703 | #define FB_MODE_IS_UNKNOWN 0 | |
704 | #define FB_MODE_IS_DETAILED 1 | |
705 | #define FB_MODE_IS_STANDARD 2 | |
706 | #define FB_MODE_IS_VESA 4 | |
707 | #define FB_MODE_IS_CALCULATED 8 | |
708 | #define FB_MODE_IS_FIRST 16 | |
709 | #define FB_MODE_IS_FROM_VAR 32 | |
710 | ||
1da177e4 LT |
711 | extern int fbmon_dpms(const struct fb_info *fb_info); |
712 | extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, | |
713 | struct fb_info *info); | |
714 | extern int fb_validate_mode(const struct fb_var_screeninfo *var, | |
715 | struct fb_info *info); | |
716 | extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var); | |
5e518d76 AD |
717 | extern const unsigned char *fb_firmware_edid(struct device *device); |
718 | extern void fb_edid_to_monspecs(unsigned char *edid, | |
719 | struct fb_monspecs *specs); | |
1da177e4 | 720 | extern void fb_destroy_modedb(struct fb_videomode *modedb); |
96fe6a21 | 721 | extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); |
fc5891c8 | 722 | extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); |
1da177e4 | 723 | |
79089044 ST |
724 | extern int of_get_fb_videomode(struct device_node *np, |
725 | struct fb_videomode *fb, | |
726 | int index); | |
2db54c72 ST |
727 | extern int fb_videomode_from_videomode(const struct videomode *vm, |
728 | struct fb_videomode *fbmode); | |
729 | ||
1da177e4 | 730 | /* drivers/video/modedb.c */ |
37715f55 | 731 | #define VESA_MODEDB_SIZE 43 |
8f5ee77b DU |
732 | #define DMT_SIZE 0x50 |
733 | ||
1da177e4 | 734 | extern void fb_var_to_videomode(struct fb_videomode *mode, |
9791d763 | 735 | const struct fb_var_screeninfo *var); |
1da177e4 | 736 | extern void fb_videomode_to_var(struct fb_var_screeninfo *var, |
9791d763 GU |
737 | const struct fb_videomode *mode); |
738 | extern int fb_mode_is_equal(const struct fb_videomode *mode1, | |
739 | const struct fb_videomode *mode2); | |
740 | extern int fb_add_videomode(const struct fb_videomode *mode, | |
741 | struct list_head *head); | |
742 | extern void fb_delete_videomode(const struct fb_videomode *mode, | |
1da177e4 | 743 | struct list_head *head); |
9791d763 GU |
744 | extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var, |
745 | struct list_head *head); | |
746 | extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var, | |
747 | struct list_head *head); | |
748 | extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode, | |
749 | struct list_head *head); | |
1da177e4 | 750 | extern void fb_destroy_modelist(struct list_head *head); |
9791d763 | 751 | extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num, |
1da177e4 | 752 | struct list_head *head); |
9791d763 GU |
753 | extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs, |
754 | struct list_head *head); | |
1da177e4 LT |
755 | |
756 | /* drivers/video/fbcmap.c */ | |
757 | extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp); | |
1e7c7804 | 758 | extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags); |
1da177e4 | 759 | extern void fb_dealloc_cmap(struct fb_cmap *cmap); |
adf6b206 HD |
760 | extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to); |
761 | extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to); | |
1da177e4 LT |
762 | extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info); |
763 | extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info); | |
adf6b206 | 764 | extern const struct fb_cmap *fb_default_cmap(int len); |
1da177e4 LT |
765 | extern void fb_invert_cmaps(void); |
766 | ||
767 | struct fb_videomode { | |
768 | const char *name; /* optional */ | |
769 | u32 refresh; /* optional */ | |
770 | u32 xres; | |
771 | u32 yres; | |
772 | u32 pixclock; | |
773 | u32 left_margin; | |
774 | u32 right_margin; | |
775 | u32 upper_margin; | |
776 | u32 lower_margin; | |
777 | u32 hsync_len; | |
778 | u32 vsync_len; | |
779 | u32 sync; | |
780 | u32 vmode; | |
781 | u32 flag; | |
782 | }; | |
783 | ||
8f5ee77b DU |
784 | struct dmt_videomode { |
785 | u32 dmt_id; | |
786 | u32 std_2byte_code; | |
787 | u32 cvt_3byte_code; | |
788 | const struct fb_videomode *mode; | |
789 | }; | |
790 | ||
9a054fba | 791 | extern const char *fb_mode_option; |
1da177e4 | 792 | extern const struct fb_videomode vesa_modes[]; |
8f5ee77b | 793 | extern const struct dmt_videomode dmt_modes[]; |
1da177e4 LT |
794 | |
795 | struct fb_modelist { | |
796 | struct list_head list; | |
797 | struct fb_videomode mode; | |
798 | }; | |
799 | ||
800 | extern int fb_find_mode(struct fb_var_screeninfo *var, | |
801 | struct fb_info *info, const char *mode_option, | |
802 | const struct fb_videomode *db, | |
803 | unsigned int dbsize, | |
804 | const struct fb_videomode *default_mode, | |
805 | unsigned int default_bpp); | |
806 | ||
f51a07d0 JP |
807 | /* Convenience logging macros */ |
808 | #define fb_err(fb_info, fmt, ...) \ | |
809 | pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) | |
810 | #define fb_notice(info, fmt, ...) \ | |
811 | pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) | |
812 | #define fb_warn(fb_info, fmt, ...) \ | |
813 | pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) | |
814 | #define fb_info(fb_info, fmt, ...) \ | |
815 | pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) | |
816 | #define fb_dbg(fb_info, fmt, ...) \ | |
817 | pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__) | |
818 | ||
1da177e4 | 819 | #endif /* _LINUX_FB_H */ |