Linux/include/linux/fb.h

  1 #ifndef _LINUX_FB_H
  2 #define _LINUX_FB_H
  3 
  4 #include <linux/types.h>
  5 #include <linux/i2c.h>
  6 #ifdef __KERNEL__
  7 #include <linux/kgdb.h>
  8 #endif /* __KERNEL__ */
  9 
 10 /* Definitions of frame buffers                                         */
 11 
 12 #define FB_MAX                  32      /* sufficient for now */
 13 
 14 /* ioctls
 15    0x46 is 'F'                                                          */
 16 #define FBIOGET_VSCREENINFO     0x4600
 17 #define FBIOPUT_VSCREENINFO     0x4601
 18 #define FBIOGET_FSCREENINFO     0x4602
 19 #define FBIOGETCMAP             0x4604
 20 #define FBIOPUTCMAP             0x4605
 21 #define FBIOPAN_DISPLAY         0x4606
 22 #ifdef __KERNEL__
 23 #define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor_user)
 24 #else
 25 #define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor)
 26 #endif
 27 /* 0x4607-0x460B are defined below */
 28 /* #define FBIOGET_MONITORSPEC  0x460C */
 29 /* #define FBIOPUT_MONITORSPEC  0x460D */
 30 /* #define FBIOSWITCH_MONIBIT   0x460E */
 31 #define FBIOGET_CON2FBMAP       0x460F
 32 #define FBIOPUT_CON2FBMAP       0x4610
 33 #define FBIOBLANK               0x4611          /* arg: 0 or vesa level + 1 */
 34 #define FBIOGET_VBLANK          _IOR('F', 0x12, struct fb_vblank)
 35 #define FBIO_ALLOC              0x4613
 36 #define FBIO_FREE               0x4614
 37 #define FBIOGET_GLYPH           0x4615
 38 #define FBIOGET_HWCINFO         0x4616
 39 #define FBIOPUT_MODEINFO        0x4617
 40 #define FBIOGET_DISPINFO        0x4618
 41 #define FBIO_WAITFORVSYNC       _IOW('F', 0x20, __u32)
 42 
 43 #define FB_TYPE_PACKED_PIXELS           0       /* Packed Pixels        */
 44 #define FB_TYPE_PLANES                  1       /* Non interleaved planes */
 45 #define FB_TYPE_INTERLEAVED_PLANES      2       /* Interleaved planes   */
 46 #define FB_TYPE_TEXT                    3       /* Text/attributes      */
 47 #define FB_TYPE_VGA_PLANES              4       /* EGA/VGA planes       */
 48 #define FB_TYPE_FOURCC                  5       /* Type identified by a V4L2 FOURCC */
 49 
 50 #define FB_AUX_TEXT_MDA         0       /* Monochrome text */
 51 #define FB_AUX_TEXT_CGA         1       /* CGA/EGA/VGA Color text */
 52 #define FB_AUX_TEXT_S3_MMIO     2       /* S3 MMIO fasttext */
 53 #define FB_AUX_TEXT_MGA_STEP16  3       /* MGA Millenium I: text, attr, 14 reserved bytes */
 54 #define FB_AUX_TEXT_MGA_STEP8   4       /* other MGAs:      text, attr,  6 reserved bytes */
 55 #define FB_AUX_TEXT_SVGA_GROUP  8       /* 8-15: SVGA tileblit compatible modes */
 56 #define FB_AUX_TEXT_SVGA_MASK   7       /* lower three bits says step */
 57 #define FB_AUX_TEXT_SVGA_STEP2  8       /* SVGA text mode:  text, attr */
 58 #define FB_AUX_TEXT_SVGA_STEP4  9       /* SVGA text mode:  text, attr,  2 reserved bytes */
 59 #define FB_AUX_TEXT_SVGA_STEP8  10      /* SVGA text mode:  text, attr,  6 reserved bytes */
 60 #define FB_AUX_TEXT_SVGA_STEP16 11      /* SVGA text mode:  text, attr, 14 reserved bytes */
 61 #define FB_AUX_TEXT_SVGA_LAST   15      /* reserved up to 15 */
 62 
 63 #define FB_AUX_VGA_PLANES_VGA4          0       /* 16 color planes (EGA/VGA) */
 64 #define FB_AUX_VGA_PLANES_CFB4          1       /* CFB4 in planes (VGA) */
 65 #define FB_AUX_VGA_PLANES_CFB8          2       /* CFB8 in planes (VGA) */
 66 
 67 #define FB_VISUAL_MONO01                0       /* Monochr. 1=Black 0=White */
 68 #define FB_VISUAL_MONO10                1       /* Monochr. 1=White 0=Black */
 69 #define FB_VISUAL_TRUECOLOR             2       /* True color   */
 70 #define FB_VISUAL_PSEUDOCOLOR           3       /* Pseudo color (like atari) */
 71 #define FB_VISUAL_DIRECTCOLOR           4       /* Direct color */
 72 #define FB_VISUAL_STATIC_PSEUDOCOLOR    5       /* Pseudo color readonly */
 73 #define FB_VISUAL_FOURCC                6       /* Visual identified by a V4L2 FOURCC */
 74 
 75 #define FB_ACCEL_NONE           0       /* no hardware accelerator      */
 76 #define FB_ACCEL_ATARIBLITT     1       /* Atari Blitter                */
 77 #define FB_ACCEL_AMIGABLITT     2       /* Amiga Blitter                */
 78 #define FB_ACCEL_S3_TRIO64      3       /* Cybervision64 (S3 Trio64)    */
 79 #define FB_ACCEL_NCR_77C32BLT   4       /* RetinaZ3 (NCR 77C32BLT)      */
 80 #define FB_ACCEL_S3_VIRGE       5       /* Cybervision64/3D (S3 ViRGE)  */
 81 #define FB_ACCEL_ATI_MACH64GX   6       /* ATI Mach 64GX family         */
 82 #define FB_ACCEL_DEC_TGA        7       /* DEC 21030 TGA                */
 83 #define FB_ACCEL_ATI_MACH64CT   8       /* ATI Mach 64CT family         */
 84 #define FB_ACCEL_ATI_MACH64VT   9       /* ATI Mach 64CT family VT class */
 85 #define FB_ACCEL_ATI_MACH64GT   10      /* ATI Mach 64CT family GT class */
 86 #define FB_ACCEL_SUN_CREATOR    11      /* Sun Creator/Creator3D        */
 87 #define FB_ACCEL_SUN_CGSIX      12      /* Sun cg6                      */
 88 #define FB_ACCEL_SUN_LEO        13      /* Sun leo/zx                   */
 89 #define FB_ACCEL_IMS_TWINTURBO  14      /* IMS Twin Turbo               */
 90 #define FB_ACCEL_3DLABS_PERMEDIA2 15    /* 3Dlabs Permedia 2            */
 91 #define FB_ACCEL_MATROX_MGA2064W 16     /* Matrox MGA2064W (Millenium)  */
 92 #define FB_ACCEL_MATROX_MGA1064SG 17    /* Matrox MGA1064SG (Mystique)  */
 93 #define FB_ACCEL_MATROX_MGA2164W 18     /* Matrox MGA2164W (Millenium II) */
 94 #define FB_ACCEL_MATROX_MGA2164W_AGP 19 /* Matrox MGA2164W (Millenium II) */
 95 #define FB_ACCEL_MATROX_MGAG100 20      /* Matrox G100 (Productiva G100) */
 96 #define FB_ACCEL_MATROX_MGAG200 21      /* Matrox G200 (Myst, Mill, ...) */
 97 #define FB_ACCEL_SUN_CG14       22      /* Sun cgfourteen                */
 98 #define FB_ACCEL_SUN_BWTWO      23      /* Sun bwtwo                    */
 99 #define FB_ACCEL_SUN_CGTHREE    24      /* Sun cgthree                  */
100 #define FB_ACCEL_SUN_TCX        25      /* Sun tcx                      */
101 #define FB_ACCEL_MATROX_MGAG400 26      /* Matrox G400                  */
102 #define FB_ACCEL_NV3            27      /* nVidia RIVA 128              */
103 #define FB_ACCEL_NV4            28      /* nVidia RIVA TNT              */
104 #define FB_ACCEL_NV5            29      /* nVidia RIVA TNT2             */
105 #define FB_ACCEL_CT_6555x       30      /* C&T 6555x                    */
106 #define FB_ACCEL_3DFX_BANSHEE   31      /* 3Dfx Banshee                 */
107 #define FB_ACCEL_ATI_RAGE128    32      /* ATI Rage128 family           */
108 #define FB_ACCEL_IGS_CYBER2000  33      /* CyberPro 2000                */
109 #define FB_ACCEL_IGS_CYBER2010  34      /* CyberPro 2010                */
110 #define FB_ACCEL_IGS_CYBER5000  35      /* CyberPro 5000                */
111 #define FB_ACCEL_SIS_GLAMOUR    36      /* SiS 300/630/540              */
112 #define FB_ACCEL_3DLABS_PERMEDIA3 37    /* 3Dlabs Permedia 3            */
113 #define FB_ACCEL_ATI_RADEON     38      /* ATI Radeon family            */
114 #define FB_ACCEL_I810           39      /* Intel 810/815                */
115 #define FB_ACCEL_SIS_GLAMOUR_2  40      /* SiS 315, 650, 740            */
116 #define FB_ACCEL_SIS_XABRE      41      /* SiS 330 ("Xabre")            */
117 #define FB_ACCEL_I830           42      /* Intel 830M/845G/85x/865G     */
118 #define FB_ACCEL_NV_10          43      /* nVidia Arch 10               */
119 #define FB_ACCEL_NV_20          44      /* nVidia Arch 20               */
120 #define FB_ACCEL_NV_30          45      /* nVidia Arch 30               */
121 #define FB_ACCEL_NV_40          46      /* nVidia Arch 40               */
122 #define FB_ACCEL_XGI_VOLARI_V   47      /* XGI Volari V3XT, V5, V8      */
123 #define FB_ACCEL_XGI_VOLARI_Z   48      /* XGI Volari Z7                */
124 #define FB_ACCEL_OMAP1610       49      /* TI OMAP16xx                  */
125 #define FB_ACCEL_TRIDENT_TGUI   50      /* Trident TGUI                 */
126 #define FB_ACCEL_TRIDENT_3DIMAGE 51     /* Trident 3DImage              */
127 #define FB_ACCEL_TRIDENT_BLADE3D 52     /* Trident Blade3D              */
128 #define FB_ACCEL_TRIDENT_BLADEXP 53     /* Trident BladeXP              */
129 #define FB_ACCEL_CIRRUS_ALPINE   53     /* Cirrus Logic 543x/544x/5480  */
130 #define FB_ACCEL_NEOMAGIC_NM2070 90     /* NeoMagic NM2070              */
131 #define FB_ACCEL_NEOMAGIC_NM2090 91     /* NeoMagic NM2090              */
132 #define FB_ACCEL_NEOMAGIC_NM2093 92     /* NeoMagic NM2093              */
133 #define FB_ACCEL_NEOMAGIC_NM2097 93     /* NeoMagic NM2097              */
134 #define FB_ACCEL_NEOMAGIC_NM2160 94     /* NeoMagic NM2160              */
135 #define FB_ACCEL_NEOMAGIC_NM2200 95     /* NeoMagic NM2200              */
136 #define FB_ACCEL_NEOMAGIC_NM2230 96     /* NeoMagic NM2230              */
137 #define FB_ACCEL_NEOMAGIC_NM2360 97     /* NeoMagic NM2360              */
138 #define FB_ACCEL_NEOMAGIC_NM2380 98     /* NeoMagic NM2380              */
139 #define FB_ACCEL_PXA3XX          99     /* PXA3xx                       */
140 
141 #define FB_ACCEL_SAVAGE4        0x80    /* S3 Savage4                   */
142 #define FB_ACCEL_SAVAGE3D       0x81    /* S3 Savage3D                  */
143 #define FB_ACCEL_SAVAGE3D_MV    0x82    /* S3 Savage3D-MV               */
144 #define FB_ACCEL_SAVAGE2000     0x83    /* S3 Savage2000                */
145 #define FB_ACCEL_SAVAGE_MX_MV   0x84    /* S3 Savage/MX-MV              */
146 #define FB_ACCEL_SAVAGE_MX      0x85    /* S3 Savage/MX                 */
147 #define FB_ACCEL_SAVAGE_IX_MV   0x86    /* S3 Savage/IX-MV              */
148 #define FB_ACCEL_SAVAGE_IX      0x87    /* S3 Savage/IX                 */
149 #define FB_ACCEL_PROSAVAGE_PM   0x88    /* S3 ProSavage PM133           */
150 #define FB_ACCEL_PROSAVAGE_KM   0x89    /* S3 ProSavage KM133           */
151 #define FB_ACCEL_S3TWISTER_P    0x8a    /* S3 Twister                   */
152 #define FB_ACCEL_S3TWISTER_K    0x8b    /* S3 TwisterK                  */
153 #define FB_ACCEL_SUPERSAVAGE    0x8c    /* S3 Supersavage               */
154 #define FB_ACCEL_PROSAVAGE_DDR  0x8d    /* S3 ProSavage DDR             */
155 #define FB_ACCEL_PROSAVAGE_DDRK 0x8e    /* S3 ProSavage DDR-K           */
156 
157 #define FB_ACCEL_PUV3_UNIGFX    0xa0    /* PKUnity-v3 Unigfx            */
158 
159 #define FB_CAP_FOURCC           1       /* Device supports FOURCC-based formats */
160 
161 struct fb_fix_screeninfo {
162         char id[16];                    /* identification string eg "TT Builtin" */
163         unsigned long smem_start;       /* Start of frame buffer mem */
164                                         /* (physical address) */
165         __u32 smem_len;                 /* Length of frame buffer mem */
166         __u32 type;                     /* see FB_TYPE_*                */
167         __u32 type_aux;                 /* Interleave for interleaved Planes */
168         __u32 visual;                   /* see FB_VISUAL_*              */ 
169         __u16 xpanstep;                 /* zero if no hardware panning  */
170         __u16 ypanstep;                 /* zero if no hardware panning  */
171         __u16 ywrapstep;                /* zero if no hardware ywrap    */
172         __u32 line_length;              /* length of a line in bytes    */
173         unsigned long mmio_start;       /* Start of Memory Mapped I/O   */
174                                         /* (physical address) */
175         __u32 mmio_len;                 /* Length of Memory Mapped I/O  */
176         __u32 accel;                    /* Indicate to driver which     */
177                                         /*  specific chip/card we have  */
178         __u16 capabilities;             /* see FB_CAP_*                 */
179         __u16 reserved[2];              /* Reserved for future compatibility */
180 };
181 
182 /* Interpretation of offset for color fields: All offsets are from the right,
183  * inside a "pixel" value, which is exactly 'bits_per_pixel' wide (means: you
184  * can use the offset as right argument to <<). A pixel afterwards is a bit
185  * stream and is written to video memory as that unmodified.
186  *
187  * For pseudocolor: offset and length should be the same for all color
188  * components. Offset specifies the position of the least significant bit
189  * of the pallette index in a pixel value. Length indicates the number
190  * of available palette entries (i.e. # of entries = 1 << length).
191  */
192 struct fb_bitfield {
193         __u32 offset;                   /* beginning of bitfield        */
194         __u32 length;                   /* length of bitfield           */
195         __u32 msb_right;                /* != 0 : Most significant bit is */ 
196                                         /* right */ 
197 };
198 
199 #define FB_NONSTD_HAM           1       /* Hold-And-Modify (HAM)        */
200 #define FB_NONSTD_REV_PIX_IN_B  2       /* order of pixels in each byte is reversed */
201 
202 #define FB_ACTIVATE_NOW         0       /* set values immediately (or vbl)*/
203 #define FB_ACTIVATE_NXTOPEN     1       /* activate on next open        */
204 #define FB_ACTIVATE_TEST        2       /* don't set, round up impossible */
205 #define FB_ACTIVATE_MASK       15
206                                         /* values                       */
207 #define FB_ACTIVATE_VBL        16       /* activate values on next vbl  */
208 #define FB_CHANGE_CMAP_VBL     32       /* change colormap on vbl       */
209 #define FB_ACTIVATE_ALL        64       /* change all VCs on this fb    */
210 #define FB_ACTIVATE_FORCE     128       /* force apply even when no change*/
211 #define FB_ACTIVATE_INV_MODE  256       /* invalidate videomode */
212 
213 #define FB_ACCELF_TEXT          1       /* (OBSOLETE) see fb_info.flags and vc_mode */
214 
215 #define FB_SYNC_HOR_HIGH_ACT    1       /* horizontal sync high active  */
216 #define FB_SYNC_VERT_HIGH_ACT   2       /* vertical sync high active    */
217 #define FB_SYNC_EXT             4       /* external sync                */
218 #define FB_SYNC_COMP_HIGH_ACT   8       /* composite sync high active   */
219 #define FB_SYNC_BROADCAST       16      /* broadcast video timings      */
220                                         /* vtotal = 144d/288n/576i => PAL  */
221                                         /* vtotal = 121d/242n/484i => NTSC */
222 #define FB_SYNC_ON_GREEN        32      /* sync on green */
223 
224 #define FB_VMODE_NONINTERLACED  0       /* non interlaced */
225 #define FB_VMODE_INTERLACED     1       /* interlaced   */
226 #define FB_VMODE_DOUBLE         2       /* double scan */
227 #define FB_VMODE_ODD_FLD_FIRST  4       /* interlaced: top line first */
228 #define FB_VMODE_MASK           255
229 
230 #define FB_VMODE_YWRAP          256     /* ywrap instead of panning     */
231 #define FB_VMODE_SMOOTH_XPAN    512     /* smooth xpan possible (internally used) */
232 #define FB_VMODE_CONUPDATE      512     /* don't update x/yoffset       */
233 
234 /*
235  * Display rotation support
236  */
237 #define FB_ROTATE_UR      0
238 #define FB_ROTATE_CW      1
239 #define FB_ROTATE_UD      2
240 #define FB_ROTATE_CCW     3
241 
242 #define PICOS2KHZ(a) (1000000000UL/(a))
243 #define KHZ2PICOS(a) (1000000000UL/(a))
244 
245 struct fb_var_screeninfo {
246         __u32 xres;                     /* visible resolution           */
247         __u32 yres;
248         __u32 xres_virtual;             /* virtual resolution           */
249         __u32 yres_virtual;
250         __u32 xoffset;                  /* offset from virtual to visible */
251         __u32 yoffset;                  /* resolution                   */
252 
253         __u32 bits_per_pixel;           /* guess what                   */
254         __u32 grayscale;                /* 0 = color, 1 = grayscale,    */
255                                         /* >1 = FOURCC                  */
256         struct fb_bitfield red;         /* bitfield in fb mem if true color, */
257         struct fb_bitfield green;       /* else only length is significant */
258         struct fb_bitfield blue;
259         struct fb_bitfield transp;      /* transparency                 */      
260 
261         __u32 nonstd;                   /* != 0 Non standard pixel format */
262 
263         __u32 activate;                 /* see FB_ACTIVATE_*            */
264 
265         __u32 height;                   /* height of picture in mm    */
266         __u32 width;                    /* width of picture in mm     */
267 
268         __u32 accel_flags;              /* (OBSOLETE) see fb_info.flags */
269 
270         /* Timing: All values in pixclocks, except pixclock (of course) */
271         __u32 pixclock;                 /* pixel clock in ps (pico seconds) */
272         __u32 left_margin;              /* time from sync to picture    */
273         __u32 right_margin;             /* time from picture to sync    */
274         __u32 upper_margin;             /* time from sync to picture    */
275         __u32 lower_margin;
276         __u32 hsync_len;                /* length of horizontal sync    */
277         __u32 vsync_len;                /* length of vertical sync      */
278         __u32 sync;                     /* see FB_SYNC_*                */
279         __u32 vmode;                    /* see FB_VMODE_*               */
280         __u32 rotate;                   /* angle we rotate counter clockwise */
281         __u32 colorspace;               /* colorspace for FOURCC-based modes */
282         __u32 reserved[4];              /* Reserved for future compatibility */
283 };
284 
285 struct fb_cmap {
286         __u32 start;                    /* First entry  */
287         __u32 len;                      /* Number of entries */
288         __u16 *red;                     /* Red values   */
289         __u16 *green;
290         __u16 *blue;
291         __u16 *transp;                  /* transparency, can be NULL */
292 };
293 
294 struct fb_con2fbmap {
295         __u32 console;
296         __u32 framebuffer;
297 };
298 
299 /* VESA Blanking Levels */
300 #define VESA_NO_BLANKING        0
301 #define VESA_VSYNC_SUSPEND      1
302 #define VESA_HSYNC_SUSPEND      2
303 #define VESA_POWERDOWN          3
304 
305 
306 enum {
307         /* screen: unblanked, hsync: on,  vsync: on */
308         FB_BLANK_UNBLANK       = VESA_NO_BLANKING,
309 
310         /* screen: blanked,   hsync: on,  vsync: on */
311         FB_BLANK_NORMAL        = VESA_NO_BLANKING + 1,
312 
313         /* screen: blanked,   hsync: on,  vsync: off */
314         FB_BLANK_VSYNC_SUSPEND = VESA_VSYNC_SUSPEND + 1,
315 
316         /* screen: blanked,   hsync: off, vsync: on */
317         FB_BLANK_HSYNC_SUSPEND = VESA_HSYNC_SUSPEND + 1,
318 
319         /* screen: blanked,   hsync: off, vsync: off */
320         FB_BLANK_POWERDOWN     = VESA_POWERDOWN + 1
321 };
322 
323 #define FB_VBLANK_VBLANKING     0x001   /* currently in a vertical blank */
324 #define FB_VBLANK_HBLANKING     0x002   /* currently in a horizontal blank */
325 #define FB_VBLANK_HAVE_VBLANK   0x004   /* vertical blanks can be detected */
326 #define FB_VBLANK_HAVE_HBLANK   0x008   /* horizontal blanks can be detected */
327 #define FB_VBLANK_HAVE_COUNT    0x010   /* global retrace counter is available */
328 #define FB_VBLANK_HAVE_VCOUNT   0x020   /* the vcount field is valid */
329 #define FB_VBLANK_HAVE_HCOUNT   0x040   /* the hcount field is valid */
330 #define FB_VBLANK_VSYNCING      0x080   /* currently in a vsync */
331 #define FB_VBLANK_HAVE_VSYNC    0x100   /* verical syncs can be detected */
332 
333 struct fb_vblank {
334         __u32 flags;                    /* FB_VBLANK flags */
335         __u32 count;                    /* counter of retraces since boot */
336         __u32 vcount;                   /* current scanline position */
337         __u32 hcount;                   /* current scandot position */
338         __u32 reserved[4];              /* reserved for future compatibility */
339 };
340 
341 /* Internal HW accel */
342 #define ROP_COPY 0
343 #define ROP_XOR  1
344 
345 struct fb_copyarea {
346         __u32 dx;
347         __u32 dy;
348         __u32 width;
349         __u32 height;
350         __u32 sx;
351         __u32 sy;
352 };
353 
354 struct fb_fillrect {
355         __u32 dx;       /* screen-relative */
356         __u32 dy;
357         __u32 width;
358         __u32 height;
359         __u32 color;
360         __u32 rop;
361 };
362 
363 struct fb_image {
364         __u32 dx;               /* Where to place image */
365         __u32 dy;
366         __u32 width;            /* Size of image */
367         __u32 height;
368         __u32 fg_color;         /* Only used when a mono bitmap */
369         __u32 bg_color;
370         __u8  depth;            /* Depth of the image */
371         const char *data;       /* Pointer to image data */
372         struct fb_cmap cmap;    /* color map info */
373 };
374 
375 /*
376  * hardware cursor control
377  */
378 
379 #define FB_CUR_SETIMAGE 0x01
380 #define FB_CUR_SETPOS   0x02
381 #define FB_CUR_SETHOT   0x04
382 #define FB_CUR_SETCMAP  0x08
383 #define FB_CUR_SETSHAPE 0x10
384 #define FB_CUR_SETSIZE  0x20
385 #define FB_CUR_SETALL   0xFF
386 
387 struct fbcurpos {
388         __u16 x, y;
389 };
390 
391 struct fb_cursor {
392         __u16 set;              /* what to set */
393         __u16 enable;           /* cursor on/off */
394         __u16 rop;              /* bitop operation */
395         const char *mask;       /* cursor mask bits */
396         struct fbcurpos hot;    /* cursor hot spot */
397         struct fb_image image;  /* Cursor image */
398 };
399 
400 #ifdef CONFIG_FB_BACKLIGHT
401 /* Settings for the generic backlight code */
402 #define FB_BACKLIGHT_LEVELS     128
403 #define FB_BACKLIGHT_MAX        0xFF
404 #endif
405 
406 #ifdef __KERNEL__
407 
408 #include <linux/fs.h>
409 #include <linux/init.h>
410 #include <linux/workqueue.h>
411 #include <linux/notifier.h>
412 #include <linux/list.h>
413 #include <linux/backlight.h>
414 #include <linux/slab.h>
415 #include <asm/io.h>
416 
417 struct vm_area_struct;
418 struct fb_info;
419 struct device;
420 struct file;
421 
422 /* Definitions below are used in the parsed monitor specs */
423 #define FB_DPMS_ACTIVE_OFF      1
424 #define FB_DPMS_SUSPEND         2
425 #define FB_DPMS_STANDBY         4
426 
427 #define FB_DISP_DDI             1
428 #define FB_DISP_ANA_700_300     2
429 #define FB_DISP_ANA_714_286     4
430 #define FB_DISP_ANA_1000_400    8
431 #define FB_DISP_ANA_700_000     16
432 
433 #define FB_DISP_MONO            32
434 #define FB_DISP_RGB             64
435 #define FB_DISP_MULTI           128
436 #define FB_DISP_UNKNOWN         256
437 
438 #define FB_SIGNAL_NONE          0
439 #define FB_SIGNAL_BLANK_BLANK   1
440 #define FB_SIGNAL_SEPARATE      2
441 #define FB_SIGNAL_COMPOSITE     4
442 #define FB_SIGNAL_SYNC_ON_GREEN 8
443 #define FB_SIGNAL_SERRATION_ON  16
444 
445 #define FB_MISC_PRIM_COLOR      1
446 #define FB_MISC_1ST_DETAIL      2       /* First Detailed Timing is preferred */
447 struct fb_chroma {
448         __u32 redx;     /* in fraction of 1024 */
449         __u32 greenx;
450         __u32 bluex;
451         __u32 whitex;
452         __u32 redy;
453         __u32 greeny;
454         __u32 bluey;
455         __u32 whitey;
456 };
457 
458 struct fb_monspecs {
459         struct fb_chroma chroma;
460         struct fb_videomode *modedb;    /* mode database */
461         __u8  manufacturer[4];          /* Manufacturer */
462         __u8  monitor[14];              /* Monitor String */
463         __u8  serial_no[14];            /* Serial Number */
464         __u8  ascii[14];                /* ? */
465         __u32 modedb_len;               /* mode database length */
466         __u32 model;                    /* Monitor Model */
467         __u32 serial;                   /* Serial Number - Integer */
468         __u32 year;                     /* Year manufactured */
469         __u32 week;                     /* Week Manufactured */
470         __u32 hfmin;                    /* hfreq lower limit (Hz) */
471         __u32 hfmax;                    /* hfreq upper limit (Hz) */
472         __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
473         __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
474         __u16 input;                    /* display type - see FB_DISP_* */
475         __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
476         __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
477         __u16 vfmin;                    /* vfreq lower limit (Hz) */
478         __u16 vfmax;                    /* vfreq upper limit (Hz) */
479         __u16 gamma;                    /* Gamma - in fractions of 100 */
480         __u16 gtf       : 1;            /* supports GTF */
481         __u16 misc;                     /* Misc flags - see FB_MISC_* */
482         __u8  version;                  /* EDID version... */
483         __u8  revision;                 /* ...and revision */
484         __u8  max_x;                    /* Maximum horizontal size (cm) */
485         __u8  max_y;                    /* Maximum vertical size (cm) */
486 };
487 
488 struct fb_cmap_user {
489         __u32 start;                    /* First entry  */
490         __u32 len;                      /* Number of entries */
491         __u16 __user *red;              /* Red values   */
492         __u16 __user *green;
493         __u16 __user *blue;
494         __u16 __user *transp;           /* transparency, can be NULL */
495 };
496 
497 struct fb_image_user {
498         __u32 dx;                       /* Where to place image */
499         __u32 dy;
500         __u32 width;                    /* Size of image */
501         __u32 height;
502         __u32 fg_color;                 /* Only used when a mono bitmap */
503         __u32 bg_color;
504         __u8  depth;                    /* Depth of the image */
505         const char __user *data;        /* Pointer to image data */
506         struct fb_cmap_user cmap;       /* color map info */
507 };
508 
509 struct fb_cursor_user {
510         __u16 set;                      /* what to set */
511         __u16 enable;                   /* cursor on/off */
512         __u16 rop;                      /* bitop operation */
513         const char __user *mask;        /* cursor mask bits */
514         struct fbcurpos hot;            /* cursor hot spot */
515         struct fb_image_user image;     /* Cursor image */
516 };
517 
518 /*
519  * Register/unregister for framebuffer events
520  */
521 
522 /*      The resolution of the passed in fb_info about to change */ 
523 #define FB_EVENT_MODE_CHANGE            0x01
524 /*      The display on this fb_info is beeing suspended, no access to the
525  *      framebuffer is allowed any more after that call returns
526  */
527 #define FB_EVENT_SUSPEND                0x02
528 /*      The display on this fb_info was resumed, you can restore the display
529  *      if you own it
530  */
531 #define FB_EVENT_RESUME                 0x03
532 /*      An entry from the modelist was removed */
533 #define FB_EVENT_MODE_DELETE            0x04
534 /*      A driver registered itself */
535 #define FB_EVENT_FB_REGISTERED          0x05
536 /*      A driver unregistered itself */
537 #define FB_EVENT_FB_UNREGISTERED        0x06
538 /*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
539 #define FB_EVENT_GET_CONSOLE_MAP        0x07
540 /*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
541 #define FB_EVENT_SET_CONSOLE_MAP        0x08
542 /*      A hardware display blank change occurred */
543 #define FB_EVENT_BLANK                  0x09
544 /*      Private modelist is to be replaced */
545 #define FB_EVENT_NEW_MODELIST           0x0A
546 /*      The resolution of the passed in fb_info about to change and
547         all vc's should be changed         */
548 #define FB_EVENT_MODE_CHANGE_ALL        0x0B
549 /*      A software display blank change occurred */
550 #define FB_EVENT_CONBLANK               0x0C
551 /*      Get drawing requirements        */
552 #define FB_EVENT_GET_REQ                0x0D
553 /*      Unbind from the console if possible */
554 #define FB_EVENT_FB_UNBIND              0x0E
555 /*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
556 #define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
557 /*      A hardware display blank early change occured */
558 #define FB_EARLY_EVENT_BLANK            0x10
559 /*      A hardware display blank revert early change occured */
560 #define FB_R_EARLY_EVENT_BLANK          0x11
561 
562 struct fb_event {
563         struct fb_info *info;
564         void *data;
565 };
566 
567 struct fb_blit_caps {
568         u32 x;
569         u32 y;
570         u32 len;
571         u32 flags;
572 };
573 
574 extern int fb_register_client(struct notifier_block *nb);
575 extern int fb_unregister_client(struct notifier_block *nb);
576 extern int fb_notifier_call_chain(unsigned long val, void *v);
577 /*
578  * Pixmap structure definition
579  *
580  * The purpose of this structure is to translate data
581  * from the hardware independent format of fbdev to what
582  * format the hardware needs.
583  */
584 
585 #define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
586 #define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
587 #define FB_PIXMAP_IO      4     /* memory is iomapped       */
588 #define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
589 
590 struct fb_pixmap {
591         u8  *addr;              /* pointer to memory                    */
592         u32 size;               /* size of buffer in bytes              */
593         u32 offset;             /* current offset to buffer             */
594         u32 buf_align;          /* byte alignment of each bitmap        */
595         u32 scan_align;         /* alignment per scanline               */
596         u32 access_align;       /* alignment per read/write (bits)      */
597         u32 flags;              /* see FB_PIXMAP_*                      */
598         u32 blit_x;             /* supported bit block dimensions (1-32)*/
599         u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
600                                 /*         blit_y = 1 << (height - 1)   */
601                                 /* if 0, will be set to 0xffffffff (all)*/
602         /* access methods */
603         void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
604         void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
605 };
606 
607 #ifdef CONFIG_FB_DEFERRED_IO
608 struct fb_deferred_io {
609         /* delay between mkwrite and deferred handler */
610         unsigned long delay;
611         struct mutex lock; /* mutex that protects the page list */
612         struct list_head pagelist; /* list of touched pages */
613         /* callback */
614         void (*first_io)(struct fb_info *info);
615         void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
616 };
617 #endif
618 
619 /*
620  * Frame buffer operations
621  *
622  * LOCKING NOTE: those functions must _ALL_ be called with the console
623  * semaphore held, this is the only suitable locking mechanism we have
624  * in 2.6. Some may be called at interrupt time at this point though.
625  *
626  * The exception to this is the debug related hooks.  Putting the fb
627  * into a debug state (e.g. flipping to the kernel console) and restoring
628  * it must be done in a lock-free manner, so low level drivers should
629  * keep track of the initial console (if applicable) and may need to
630  * perform direct, unlocked hardware writes in these hooks.
631  */
632 
633 struct fb_ops {
634         /* open/release and usage marking */
635         struct module *owner;
636         int (*fb_open)(struct fb_info *info, int user);
637         int (*fb_release)(struct fb_info *info, int user);
638 
639         /* For framebuffers with strange non linear layouts or that do not
640          * work with normal memory mapped access
641          */
642         ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
643                            size_t count, loff_t *ppos);
644         ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
645                             size_t count, loff_t *ppos);
646 
647         /* checks var and eventually tweaks it to something supported,
648          * DO NOT MODIFY PAR */
649         int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
650 
651         /* set the video mode according to info->var */
652         int (*fb_set_par)(struct fb_info *info);
653 
654         /* set color register */
655         int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
656                             unsigned blue, unsigned transp, struct fb_info *info);
657 
658         /* set color registers in batch */
659         int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
660 
661         /* blank display */
662         int (*fb_blank)(int blank, struct fb_info *info);
663 
664         /* pan display */
665         int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
666 
667         /* Draws a rectangle */
668         void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
669         /* Copy data from area to another */
670         void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
671         /* Draws a image to the display */
672         void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
673 
674         /* Draws cursor */
675         int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
676 
677         /* Rotates the display */
678         void (*fb_rotate)(struct fb_info *info, int angle);
679 
680         /* wait for blit idle, optional */
681         int (*fb_sync)(struct fb_info *info);
682 
683         /* perform fb specific ioctl (optional) */
684         int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
685                         unsigned long arg);
686 
687         /* Handle 32bit compat ioctl (optional) */
688         int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
689                         unsigned long arg);
690 
691         /* perform fb specific mmap */
692         int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
693 
694         /* get capability given var */
695         void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
696                             struct fb_var_screeninfo *var);
697 
698         /* teardown any resources to do with this framebuffer */
699         void (*fb_destroy)(struct fb_info *info);
700 
701         /* called at KDB enter and leave time to prepare the console */
702         int (*fb_debug_enter)(struct fb_info *info);
703         int (*fb_debug_leave)(struct fb_info *info);
704 };
705 
706 #ifdef CONFIG_FB_TILEBLITTING
707 #define FB_TILE_CURSOR_NONE        0
708 #define FB_TILE_CURSOR_UNDERLINE   1
709 #define FB_TILE_CURSOR_LOWER_THIRD 2
710 #define FB_TILE_CURSOR_LOWER_HALF  3
711 #define FB_TILE_CURSOR_TWO_THIRDS  4
712 #define FB_TILE_CURSOR_BLOCK       5
713 
714 struct fb_tilemap {
715         __u32 width;                /* width of each tile in pixels */
716         __u32 height;               /* height of each tile in scanlines */
717         __u32 depth;                /* color depth of each tile */
718         __u32 length;               /* number of tiles in the map */
719         const __u8 *data;           /* actual tile map: a bitmap array, packed
720                                        to the nearest byte */
721 };
722 
723 struct fb_tilerect {
724         __u32 sx;                   /* origin in the x-axis */
725         __u32 sy;                   /* origin in the y-axis */
726         __u32 width;                /* number of tiles in the x-axis */
727         __u32 height;               /* number of tiles in the y-axis */
728         __u32 index;                /* what tile to use: index to tile map */
729         __u32 fg;                   /* foreground color */
730         __u32 bg;                   /* background color */
731         __u32 rop;                  /* raster operation */
732 };
733 
734 struct fb_tilearea {
735         __u32 sx;                   /* source origin in the x-axis */
736         __u32 sy;                   /* source origin in the y-axis */
737         __u32 dx;                   /* destination origin in the x-axis */
738         __u32 dy;                   /* destination origin in the y-axis */
739         __u32 width;                /* number of tiles in the x-axis */
740         __u32 height;               /* number of tiles in the y-axis */
741 };
742 
743 struct fb_tileblit {
744         __u32 sx;                   /* origin in the x-axis */
745         __u32 sy;                   /* origin in the y-axis */
746         __u32 width;                /* number of tiles in the x-axis */
747         __u32 height;               /* number of tiles in the y-axis */
748         __u32 fg;                   /* foreground color */
749         __u32 bg;                   /* background color */
750         __u32 length;               /* number of tiles to draw */
751         __u32 *indices;             /* array of indices to tile map */
752 };
753 
754 struct fb_tilecursor {
755         __u32 sx;                   /* cursor position in the x-axis */
756         __u32 sy;                   /* cursor position in the y-axis */
757         __u32 mode;                 /* 0 = erase, 1 = draw */
758         __u32 shape;                /* see FB_TILE_CURSOR_* */
759         __u32 fg;                   /* foreground color */
760         __u32 bg;                   /* background color */
761 };
762 
763 struct fb_tile_ops {
764         /* set tile characteristics */
765         void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
766 
767         /* all dimensions from hereon are in terms of tiles */
768 
769         /* move a rectangular region of tiles from one area to another*/
770         void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
771         /* fill a rectangular region with a tile */
772         void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
773         /* copy an array of tiles */
774         void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
775         /* cursor */
776         void (*fb_tilecursor)(struct fb_info *info,
777                               struct fb_tilecursor *cursor);
778         /* get maximum length of the tile map */
779         int (*fb_get_tilemax)(struct fb_info *info);
780 };
781 #endif /* CONFIG_FB_TILEBLITTING */
782 
783 /* FBINFO_* = fb_info.flags bit flags */
784 #define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
785 #define FBINFO_HWACCEL_DISABLED 0x0002
786         /* When FBINFO_HWACCEL_DISABLED is set:
787          *  Hardware acceleration is turned off.  Software implementations
788          *  of required functions (copyarea(), fillrect(), and imageblit())
789          *  takes over; acceleration engine should be in a quiescent state */
790 
791 /* hints */
792 #define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
793 #define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
794 #define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
795 
796 /* hardware supported ops */
797 /*  semantics: when a bit is set, it indicates that the operation is
798  *   accelerated by hardware.
799  *  required functions will still work even if the bit is not set.
800  *  optional functions may not even exist if the flag bit is not set.
801  */
802 #define FBINFO_HWACCEL_NONE             0x0000
803 #define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
804 #define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
805 #define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
806 #define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
807 #define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
808 #define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
809 #define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
810 
811 #define FBINFO_MISC_USEREVENT          0x10000 /* event request
812                                                   from userspace */
813 #define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
814 
815 /* A driver may set this flag to indicate that it does want a set_par to be
816  * called every time when fbcon_switch is executed. The advantage is that with
817  * this flag set you can really be sure that set_par is always called before
818  * any of the functions dependent on the correct hardware state or altering
819  * that state, even if you are using some broken X releases. The disadvantage
820  * is that it introduces unwanted delays to every console switch if set_par
821  * is slow. It is a good idea to try this flag in the drivers initialization
822  * code whenever there is a bug report related to switching between X and the
823  * framebuffer console.
824  */
825 #define FBINFO_MISC_ALWAYS_SETPAR   0x40000
826 
827 /* where the fb is a firmware driver, and can be replaced with a proper one */
828 #define FBINFO_MISC_FIRMWARE        0x80000
829 /*
830  * Host and GPU endianness differ.
831  */
832 #define FBINFO_FOREIGN_ENDIAN   0x100000
833 /*
834  * Big endian math. This is the same flags as above, but with different
835  * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
836  * and host endianness. Drivers should not use this flag.
837  */
838 #define FBINFO_BE_MATH  0x100000
839 
840 /* report to the VT layer that this fb driver can accept forced console
841    output like oopses */
842 #define FBINFO_CAN_FORCE_OUTPUT     0x200000
843 
844 struct fb_info {
845         atomic_t count;
846         int node;
847         int flags;
848         struct mutex lock;              /* Lock for open/release/ioctl funcs */
849         struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
850         struct fb_var_screeninfo var;   /* Current var */
851         struct fb_fix_screeninfo fix;   /* Current fix */
852         struct fb_monspecs monspecs;    /* Current Monitor specs */
853         struct work_struct queue;       /* Framebuffer event queue */
854         struct fb_pixmap pixmap;        /* Image hardware mapper */
855         struct fb_pixmap sprite;        /* Cursor hardware mapper */
856         struct fb_cmap cmap;            /* Current cmap */
857         struct list_head modelist;      /* mode list */
858         struct fb_videomode *mode;      /* current mode */
859 
860 #ifdef CONFIG_FB_BACKLIGHT
861         /* assigned backlight device */
862         /* set before framebuffer registration, 
863            remove after unregister */
864         struct backlight_device *bl_dev;
865 
866         /* Backlight level curve */
867         struct mutex bl_curve_mutex;    
868         u8 bl_curve[FB_BACKLIGHT_LEVELS];
869 #endif
870 #ifdef CONFIG_FB_DEFERRED_IO
871         struct delayed_work deferred_work;
872         struct fb_deferred_io *fbdefio;
873 #endif
874 
875         struct fb_ops *fbops;
876         struct device *device;          /* This is the parent */
877         struct device *dev;             /* This is this fb device */
878         int class_flag;                    /* private sysfs flags */
879 #ifdef CONFIG_FB_TILEBLITTING
880         struct fb_tile_ops *tileops;    /* Tile Blitting */
881 #endif
882         char __iomem *screen_base;      /* Virtual address */
883         unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */ 
884         void *pseudo_palette;           /* Fake palette of 16 colors */ 
885 #define FBINFO_STATE_RUNNING    0
886 #define FBINFO_STATE_SUSPENDED  1
887         u32 state;                      /* Hardware state i.e suspend */
888         void *fbcon_par;                /* fbcon use-only private area */
889         /* From here on everything is device dependent */
890         void *par;
891         /* we need the PCI or similar aperture base/size not
892            smem_start/size as smem_start may just be an object
893            allocated inside the aperture so may not actually overlap */
894         struct apertures_struct {
895                 unsigned int count;
896                 struct aperture {
897                         resource_size_t base;
898                         resource_size_t size;
899                 } ranges[0];
900         } *apertures;
901 };
902 
903 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
904         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
905                         + max_num * sizeof(struct aperture), GFP_KERNEL);
906         if (!a)
907                 return NULL;
908         a->count = max_num;
909         return a;
910 }
911 
912 #ifdef MODULE
913 #define FBINFO_DEFAULT  FBINFO_MODULE
914 #else
915 #define FBINFO_DEFAULT  0
916 #endif
917 
918 // This will go away
919 #define FBINFO_FLAG_MODULE      FBINFO_MODULE
920 #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
921 
922 /* This will go away
923  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
924  * when it wants to turn the acceleration engine on.  This is
925  * really a separate operation, and should be modified via sysfs.
926  *  But for now, we leave it broken with the following define
927  */
928 #define STUPID_ACCELF_TEXT_SHIT
929 
930 // This will go away
931 #if defined(__sparc__)
932 
933 /* We map all of our framebuffers such that big-endian accesses
934  * are what we want, so the following is sufficient.
935  */
936 
937 // This will go away
938 #define fb_readb sbus_readb
939 #define fb_readw sbus_readw
940 #define fb_readl sbus_readl
941 #define fb_readq sbus_readq
942 #define fb_writeb sbus_writeb
943 #define fb_writew sbus_writew
944 #define fb_writel sbus_writel
945 #define fb_writeq sbus_writeq
946 #define fb_memset sbus_memset_io
947 #define fb_memcpy_fromfb sbus_memcpy_fromio
948 #define fb_memcpy_tofb sbus_memcpy_toio
949 
950 #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__)
951 
952 #define fb_readb __raw_readb
953 #define fb_readw __raw_readw
954 #define fb_readl __raw_readl
955 #define fb_readq __raw_readq
956 #define fb_writeb __raw_writeb
957 #define fb_writew __raw_writew
958 #define fb_writel __raw_writel
959 #define fb_writeq __raw_writeq
960 #define fb_memset memset_io
961 #define fb_memcpy_fromfb memcpy_fromio
962 #define fb_memcpy_tofb memcpy_toio
963 
964 #else
965 
966 #define fb_readb(addr) (*(volatile u8 *) (addr))
967 #define fb_readw(addr) (*(volatile u16 *) (addr))
968 #define fb_readl(addr) (*(volatile u32 *) (addr))
969 #define fb_readq(addr) (*(volatile u64 *) (addr))
970 #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
971 #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
972 #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
973 #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
974 #define fb_memset memset
975 #define fb_memcpy_fromfb memcpy
976 #define fb_memcpy_tofb memcpy
977 
978 #endif
979 
980 #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
981 #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
982                                                       (val) << (bits))
983 #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
984                                                       (val) >> (bits))
985 
986     /*
987      *  `Generic' versions of the frame buffer device operations
988      */
989 
990 extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
991 extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
992 extern int fb_blank(struct fb_info *info, int blank);
993 extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
994 extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
995 extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
996 /*
997  * Drawing operations where framebuffer is in system RAM
998  */
999 extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
1000 extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
1001 extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
1002 extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
1003                            size_t count, loff_t *ppos);
1004 extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
1005                             size_t count, loff_t *ppos);
1006 
1007 /* drivers/video/fbmem.c */
1008 extern int register_framebuffer(struct fb_info *fb_info);
1009 extern int unregister_framebuffer(struct fb_info *fb_info);
1010 extern int unlink_framebuffer(struct fb_info *fb_info);
1011 extern void remove_conflicting_framebuffers(struct apertures_struct *a,
1012                                 const char *name, bool primary);
1013 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
1014 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
1015 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
1016 extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
1017                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
1018 extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
1019 extern void fb_set_suspend(struct fb_info *info, int state);
1020 extern int fb_get_color_depth(struct fb_var_screeninfo *var,
1021                               struct fb_fix_screeninfo *fix);
1022 extern int fb_get_options(char *name, char **option);
1023 extern int fb_new_modelist(struct fb_info *info);
1024 
1025 extern struct fb_info *registered_fb[FB_MAX];
1026 extern int num_registered_fb;
1027 extern struct class *fb_class;
1028 
1029 extern int lock_fb_info(struct fb_info *info);
1030 
1031 static inline void unlock_fb_info(struct fb_info *info)
1032 {
1033         mutex_unlock(&info->lock);
1034 }
1035 
1036 static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
1037                                            u8 *src, u32 s_pitch, u32 height)
1038 {
1039         int i, j;
1040 
1041         d_pitch -= s_pitch;
1042 
1043         for (i = height; i--; ) {
1044                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
1045                 for (j = 0; j < s_pitch; j++)
1046                         *dst++ = *src++;
1047                 dst += d_pitch;
1048         }
1049 }
1050 
1051 /* drivers/video/fb_defio.c */
1052 extern void fb_deferred_io_init(struct fb_info *info);
1053 extern void fb_deferred_io_open(struct fb_info *info,
1054                                 struct inode *inode,
1055                                 struct file *file);
1056 extern void fb_deferred_io_cleanup(struct fb_info *info);
1057 extern int fb_deferred_io_fsync(struct file *file, loff_t start,
1058                                 loff_t end, int datasync);
1059 
1060 static inline bool fb_be_math(struct fb_info *info)
1061 {
1062 #ifdef CONFIG_FB_FOREIGN_ENDIAN
1063 #if defined(CONFIG_FB_BOTH_ENDIAN)
1064         return info->flags & FBINFO_BE_MATH;
1065 #elif defined(CONFIG_FB_BIG_ENDIAN)
1066         return true;
1067 #elif defined(CONFIG_FB_LITTLE_ENDIAN)
1068         return false;
1069 #endif /* CONFIG_FB_BOTH_ENDIAN */
1070 #else
1071 #ifdef __BIG_ENDIAN
1072         return true;
1073 #else
1074         return false;
1075 #endif /* __BIG_ENDIAN */
1076 #endif /* CONFIG_FB_FOREIGN_ENDIAN */
1077 }
1078 
1079 /* drivers/video/fbsysfs.c */
1080 extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
1081 extern void framebuffer_release(struct fb_info *info);
1082 extern int fb_init_device(struct fb_info *fb_info);
1083 extern void fb_cleanup_device(struct fb_info *head);
1084 extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
1085 
1086 /* drivers/video/fbmon.c */
1087 #define FB_MAXTIMINGS           0
1088 #define FB_VSYNCTIMINGS         1
1089 #define FB_HSYNCTIMINGS         2
1090 #define FB_DCLKTIMINGS          3
1091 #define FB_IGNOREMON            0x100
1092 
1093 #define FB_MODE_IS_UNKNOWN      0
1094 #define FB_MODE_IS_DETAILED     1
1095 #define FB_MODE_IS_STANDARD     2
1096 #define FB_MODE_IS_VESA         4
1097 #define FB_MODE_IS_CALCULATED   8
1098 #define FB_MODE_IS_FIRST        16
1099 #define FB_MODE_IS_FROM_VAR     32
1100 
1101 extern int fbmon_dpms(const struct fb_info *fb_info);
1102 extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
1103                        struct fb_info *info);
1104 extern int fb_validate_mode(const struct fb_var_screeninfo *var,
1105                             struct fb_info *info);
1106 extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
1107 extern const unsigned char *fb_firmware_edid(struct device *device);
1108 extern void fb_edid_to_monspecs(unsigned char *edid,
1109                                 struct fb_monspecs *specs);
1110 extern void fb_edid_add_monspecs(unsigned char *edid,
1111                                  struct fb_monspecs *specs);
1112 extern void fb_destroy_modedb(struct fb_videomode *modedb);
1113 extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
1114 extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
1115 
1116 /* drivers/video/modedb.c */
1117 #define VESA_MODEDB_SIZE 34
1118 extern void fb_var_to_videomode(struct fb_videomode *mode,
1119                                 const struct fb_var_screeninfo *var);
1120 extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
1121                                 const struct fb_videomode *mode);
1122 extern int fb_mode_is_equal(const struct fb_videomode *mode1,
1123                             const struct fb_videomode *mode2);
1124 extern int fb_add_videomode(const struct fb_videomode *mode,
1125                             struct list_head *head);
1126 extern void fb_delete_videomode(const struct fb_videomode *mode,
1127                                 struct list_head *head);
1128 extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
1129                                                 struct list_head *head);
1130 extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
1131                                                     struct list_head *head);
1132 extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
1133                                                        struct list_head *head);
1134 extern void fb_destroy_modelist(struct list_head *head);
1135 extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
1136                                      struct list_head *head);
1137 extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
1138                                                        struct list_head *head);
1139 
1140 /* drivers/video/fbcmap.c */
1141 extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
1142 extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
1143 extern void fb_dealloc_cmap(struct fb_cmap *cmap);
1144 extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
1145 extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
1146 extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
1147 extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
1148 extern const struct fb_cmap *fb_default_cmap(int len);
1149 extern void fb_invert_cmaps(void);
1150 
1151 struct fb_videomode {
1152         const char *name;       /* optional */
1153         u32 refresh;            /* optional */
1154         u32 xres;
1155         u32 yres;
1156         u32 pixclock;
1157         u32 left_margin;
1158         u32 right_margin;
1159         u32 upper_margin;
1160         u32 lower_margin;
1161         u32 hsync_len;
1162         u32 vsync_len;
1163         u32 sync;
1164         u32 vmode;
1165         u32 flag;
1166 };
1167 
1168 extern const char *fb_mode_option;
1169 extern const struct fb_videomode vesa_modes[];
1170 extern const struct fb_videomode cea_modes[64];
1171 
1172 struct fb_modelist {
1173         struct list_head list;
1174         struct fb_videomode mode;
1175 };
1176 
1177 extern int fb_find_mode(struct fb_var_screeninfo *var,
1178                         struct fb_info *info, const char *mode_option,
1179                         const struct fb_videomode *db,
1180                         unsigned int dbsize,
1181                         const struct fb_videomode *default_mode,
1182                         unsigned int default_bpp);
1183 
1184 #endif /* __KERNEL__ */
1185 
1186 #endif /* _LINUX_FB_H */
1187 

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