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  1. #ifndef _LINUX_FB_H
  2. #define _LINUX_FB_H
  3.  
  4. #include <linux/kgdb.h>
  5. #include <uapi/linux/fb.h>
  6.  
  7. #define FBIO_CURSOR            _IOWR('F', 0x08, struct fb_cursor_user)
  8.  
  9. #include <linux/fs.h>
  10. #include <linux/init.h>
  11. #include <linux/workqueue.h>
  12. #include <linux/notifier.h>
  13. #include <linux/list.h>
  14. #include <linux/backlight.h>
  15. #include <linux/slab.h>
  16. #include <asm/io.h>
  17.  
  18. struct vm_area_struct;
  19. struct fb_info;
  20. struct device;
  21. struct file;
  22. struct videomode;
  23. struct device_node;
  24.  
  25. /* Definitions below are used in the parsed monitor specs */
  26. #define FB_DPMS_ACTIVE_OFF      1
  27. #define FB_DPMS_SUSPEND         2
  28. #define FB_DPMS_STANDBY         4
  29.  
  30. #define FB_DISP_DDI             1
  31. #define FB_DISP_ANA_700_300     2
  32. #define FB_DISP_ANA_714_286     4
  33. #define FB_DISP_ANA_1000_400    8
  34. #define FB_DISP_ANA_700_000     16
  35.  
  36. #define FB_DISP_MONO            32
  37. #define FB_DISP_RGB             64
  38. #define FB_DISP_MULTI           128
  39. #define FB_DISP_UNKNOWN         256
  40.  
  41. #define FB_SIGNAL_NONE          0
  42. #define FB_SIGNAL_BLANK_BLANK   1
  43. #define FB_SIGNAL_SEPARATE      2
  44. #define FB_SIGNAL_COMPOSITE     4
  45. #define FB_SIGNAL_SYNC_ON_GREEN 8
  46. #define FB_SIGNAL_SERRATION_ON  16
  47.  
  48. #define FB_MISC_PRIM_COLOR      1
  49. #define FB_MISC_1ST_DETAIL      2       /* First Detailed Timing is preferred */
  50. #define FB_MISC_HDMI            4
  51. struct fb_chroma {
  52.         __u32 redx;     /* in fraction of 1024 */
  53.         __u32 greenx;
  54.         __u32 bluex;
  55.         __u32 whitex;
  56.         __u32 redy;
  57.         __u32 greeny;
  58.         __u32 bluey;
  59.         __u32 whitey;
  60. };
  61.  
  62. struct fb_monspecs {
  63.         struct fb_chroma chroma;
  64.         struct fb_videomode *modedb;    /* mode database */
  65.         __u8  manufacturer[4];          /* Manufacturer */
  66.         __u8  monitor[14];              /* Monitor String */
  67.         __u8  serial_no[14];            /* Serial Number */
  68.         __u8  ascii[14];                /* ? */
  69.         __u32 modedb_len;               /* mode database length */
  70.         __u32 model;                    /* Monitor Model */
  71.         __u32 serial;                   /* Serial Number - Integer */
  72.         __u32 year;                     /* Year manufactured */
  73.         __u32 week;                     /* Week Manufactured */
  74.         __u32 hfmin;                    /* hfreq lower limit (Hz) */
  75.         __u32 hfmax;                    /* hfreq upper limit (Hz) */
  76.         __u32 dclkmin;                  /* pixelclock lower limit (Hz) */
  77.         __u32 dclkmax;                  /* pixelclock upper limit (Hz) */
  78.         __u16 input;                    /* display type - see FB_DISP_* */
  79.         __u16 dpms;                     /* DPMS support - see FB_DPMS_ */
  80.         __u16 signal;                   /* Signal Type - see FB_SIGNAL_* */
  81.         __u16 vfmin;                    /* vfreq lower limit (Hz) */
  82.         __u16 vfmax;                    /* vfreq upper limit (Hz) */
  83.         __u16 gamma;                    /* Gamma - in fractions of 100 */
  84.         __u16 gtf       : 1;            /* supports GTF */
  85.         __u16 misc;                     /* Misc flags - see FB_MISC_* */
  86.         __u8  version;                  /* EDID version... */
  87.         __u8  revision;                 /* ...and revision */
  88.         __u8  max_x;                    /* Maximum horizontal size (cm) */
  89.         __u8  max_y;                    /* Maximum vertical size (cm) */
  90. };
  91.  
  92. struct fb_cmap_user {
  93.         __u32 start;                    /* First entry  */
  94.         __u32 len;                      /* Number of entries */
  95.         __u16 __user *red;              /* Red values   */
  96.         __u16 __user *green;
  97.         __u16 __user *blue;
  98.         __u16 __user *transp;           /* transparency, can be NULL */
  99. };
  100.  
  101. struct fb_image_user {
  102.         __u32 dx;                       /* Where to place image */
  103.         __u32 dy;
  104.         __u32 width;                    /* Size of image */
  105.         __u32 height;
  106.         __u32 fg_color;                 /* Only used when a mono bitmap */
  107.         __u32 bg_color;
  108.         __u8  depth;                    /* Depth of the image */
  109.         const char __user *data;        /* Pointer to image data */
  110.         struct fb_cmap_user cmap;       /* color map info */
  111. };
  112.  
  113. struct fb_cursor_user {
  114.         __u16 set;                      /* what to set */
  115.         __u16 enable;                   /* cursor on/off */
  116.         __u16 rop;                      /* bitop operation */
  117.         const char __user *mask;        /* cursor mask bits */
  118.         struct fbcurpos hot;            /* cursor hot spot */
  119.         struct fb_image_user image;     /* Cursor image */
  120. };
  121.  
  122. /*
  123.  * Register/unregister for framebuffer events
  124.  */
  125.  
  126. /*      The resolution of the passed in fb_info about to change */
  127. #define FB_EVENT_MODE_CHANGE            0x01
  128. /*      The display on this fb_info is beeing suspended, no access to the
  129.  *      framebuffer is allowed any more after that call returns
  130.  */
  131. #define FB_EVENT_SUSPEND                0x02
  132. /*      The display on this fb_info was resumed, you can restore the display
  133.  *      if you own it
  134.  */
  135. #define FB_EVENT_RESUME                 0x03
  136. /*      An entry from the modelist was removed */
  137. #define FB_EVENT_MODE_DELETE            0x04
  138. /*      A driver registered itself */
  139. #define FB_EVENT_FB_REGISTERED          0x05
  140. /*      A driver unregistered itself */
  141. #define FB_EVENT_FB_UNREGISTERED        0x06
  142. /*      CONSOLE-SPECIFIC: get console to framebuffer mapping */
  143. #define FB_EVENT_GET_CONSOLE_MAP        0x07
  144. /*      CONSOLE-SPECIFIC: set console to framebuffer mapping */
  145. #define FB_EVENT_SET_CONSOLE_MAP        0x08
  146. /*      A hardware display blank change occurred */
  147. #define FB_EVENT_BLANK                  0x09
  148. /*      Private modelist is to be replaced */
  149. #define FB_EVENT_NEW_MODELIST           0x0A
  150. /*      The resolution of the passed in fb_info about to change and
  151.         all vc's should be changed         */
  152. #define FB_EVENT_MODE_CHANGE_ALL        0x0B
  153. /*      A software display blank change occurred */
  154. #define FB_EVENT_CONBLANK               0x0C
  155. /*      Get drawing requirements        */
  156. #define FB_EVENT_GET_REQ                0x0D
  157. /*      Unbind from the console if possible */
  158. #define FB_EVENT_FB_UNBIND              0x0E
  159. /*      CONSOLE-SPECIFIC: remap all consoles to new fb - for vga_switcheroo */
  160. #define FB_EVENT_REMAP_ALL_CONSOLE      0x0F
  161. /*      A hardware display blank early change occured */
  162. #define FB_EARLY_EVENT_BLANK            0x10
  163. /*      A hardware display blank revert early change occured */
  164. #define FB_R_EARLY_EVENT_BLANK          0x11
  165.  
  166. struct fb_event {
  167.         struct fb_info *info;
  168.         void *data;
  169. };
  170.  
  171. struct fb_blit_caps {
  172.         u32 x;
  173.         u32 y;
  174.         u32 len;
  175.         u32 flags;
  176. };
  177.  
  178. #ifdef CONFIG_FB_NOTIFY
  179. extern int fb_register_client(struct notifier_block *nb);
  180. extern int fb_unregister_client(struct notifier_block *nb);
  181. extern int fb_notifier_call_chain(unsigned long val, void *v);
  182. #else
  183. static inline int fb_register_client(struct notifier_block *nb)
  184. {
  185.         return 0;
  186. };
  187.  
  188. static inline int fb_unregister_client(struct notifier_block *nb)
  189. {
  190.         return 0;
  191. };
  192.  
  193. static inline int fb_notifier_call_chain(unsigned long val, void *v)
  194. {
  195.         return 0;
  196. };
  197. #endif
  198.  
  199. /*
  200.  * Pixmap structure definition
  201.  *
  202.  * The purpose of this structure is to translate data
  203.  * from the hardware independent format of fbdev to what
  204.  * format the hardware needs.
  205.  */
  206.  
  207. #define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
  208. #define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
  209. #define FB_PIXMAP_IO      4     /* memory is iomapped       */
  210. #define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */
  211.  
  212. struct fb_pixmap {
  213.         u8  *addr;              /* pointer to memory                    */
  214.         u32 size;               /* size of buffer in bytes              */
  215.         u32 offset;             /* current offset to buffer             */
  216.         u32 buf_align;          /* byte alignment of each bitmap        */
  217.         u32 scan_align;         /* alignment per scanline               */
  218.         u32 access_align;       /* alignment per read/write (bits)      */
  219.         u32 flags;              /* see FB_PIXMAP_*                      */
  220.         u32 blit_x;             /* supported bit block dimensions (1-32)*/
  221.         u32 blit_y;             /* Format: blit_x = 1 << (width - 1)    */
  222.                                 /*         blit_y = 1 << (height - 1)   */
  223.                                 /* if 0, will be set to 0xffffffff (all)*/
  224.         /* access methods */
  225.         void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
  226.         void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
  227. };
  228.  
  229. #ifdef CONFIG_FB_DEFERRED_IO
  230. struct fb_deferred_io {
  231.         /* delay between mkwrite and deferred handler */
  232.         unsigned long delay;
  233.         struct mutex lock; /* mutex that protects the page list */
  234.         struct list_head pagelist; /* list of touched pages */
  235.         /* callback */
  236.         void (*first_io)(struct fb_info *info);
  237.         void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
  238. };
  239. #endif
  240.  
  241. /*
  242.  * Frame buffer operations
  243.  *
  244.  * LOCKING NOTE: those functions must _ALL_ be called with the console
  245.  * semaphore held, this is the only suitable locking mechanism we have
  246.  * in 2.6. Some may be called at interrupt time at this point though.
  247.  *
  248.  * The exception to this is the debug related hooks.  Putting the fb
  249.  * into a debug state (e.g. flipping to the kernel console) and restoring
  250.  * it must be done in a lock-free manner, so low level drivers should
  251.  * keep track of the initial console (if applicable) and may need to
  252.  * perform direct, unlocked hardware writes in these hooks.
  253.  */
  254.  
  255. struct fb_ops {
  256.         /* open/release and usage marking */
  257.         struct module *owner;
  258.         int (*fb_open)(struct fb_info *info, int user);
  259.         int (*fb_release)(struct fb_info *info, int user);
  260.  
  261.         /* For framebuffers with strange non linear layouts or that do not
  262.          * work with normal memory mapped access
  263.          */
  264.         ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
  265.                            size_t count, loff_t *ppos);
  266.         ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
  267.                             size_t count, loff_t *ppos);
  268.  
  269.         /* checks var and eventually tweaks it to something supported,
  270.          * DO NOT MODIFY PAR */
  271.         int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
  272.  
  273.         /* set the video mode according to info->var */
  274.         int (*fb_set_par)(struct fb_info *info);
  275.  
  276.         /* set color register */
  277.         int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
  278.                             unsigned blue, unsigned transp, struct fb_info *info);
  279.  
  280.         /* set color registers in batch */
  281.         int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
  282.  
  283.         /* blank display */
  284.         int (*fb_blank)(int blank, struct fb_info *info);
  285.  
  286.         /* pan display */
  287.         int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
  288.  
  289.         /* Draws a rectangle */
  290.         void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
  291.         /* Copy data from area to another */
  292.         void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
  293.         /* Draws a image to the display */
  294.         void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
  295.  
  296.         /* Draws cursor */
  297.         int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
  298.  
  299.         /* wait for blit idle, optional */
  300.         int (*fb_sync)(struct fb_info *info);
  301.  
  302.         /* perform fb specific ioctl (optional) */
  303.         int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
  304.                         unsigned long arg);
  305.  
  306.         /* Handle 32bit compat ioctl (optional) */
  307.         int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
  308.                         unsigned long arg);
  309.  
  310.         /* perform fb specific mmap */
  311. //   int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
  312.  
  313.         /* get capability given var */
  314.         void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
  315.                             struct fb_var_screeninfo *var);
  316.  
  317.         /* teardown any resources to do with this framebuffer */
  318.         void (*fb_destroy)(struct fb_info *info);
  319.  
  320.         /* called at KDB enter and leave time to prepare the console */
  321.         int (*fb_debug_enter)(struct fb_info *info);
  322.         int (*fb_debug_leave)(struct fb_info *info);
  323. };
  324.  
  325. #ifdef CONFIG_FB_TILEBLITTING
  326. #define FB_TILE_CURSOR_NONE        0
  327. #define FB_TILE_CURSOR_UNDERLINE   1
  328. #define FB_TILE_CURSOR_LOWER_THIRD 2
  329. #define FB_TILE_CURSOR_LOWER_HALF  3
  330. #define FB_TILE_CURSOR_TWO_THIRDS  4
  331. #define FB_TILE_CURSOR_BLOCK       5
  332.  
  333. struct fb_tilemap {
  334.         __u32 width;                /* width of each tile in pixels */
  335.         __u32 height;               /* height of each tile in scanlines */
  336.         __u32 depth;                /* color depth of each tile */
  337.         __u32 length;               /* number of tiles in the map */
  338.         const __u8 *data;           /* actual tile map: a bitmap array, packed
  339.                                        to the nearest byte */
  340. };
  341.  
  342. struct fb_tilerect {
  343.         __u32 sx;                   /* origin in the x-axis */
  344.         __u32 sy;                   /* origin in the y-axis */
  345.         __u32 width;                /* number of tiles in the x-axis */
  346.         __u32 height;               /* number of tiles in the y-axis */
  347.         __u32 index;                /* what tile to use: index to tile map */
  348.         __u32 fg;                   /* foreground color */
  349.         __u32 bg;                   /* background color */
  350.         __u32 rop;                  /* raster operation */
  351. };
  352.  
  353. struct fb_tilearea {
  354.         __u32 sx;                   /* source origin in the x-axis */
  355.         __u32 sy;                   /* source origin in the y-axis */
  356.         __u32 dx;                   /* destination origin in the x-axis */
  357.         __u32 dy;                   /* destination origin in the y-axis */
  358.         __u32 width;                /* number of tiles in the x-axis */
  359.         __u32 height;               /* number of tiles in the y-axis */
  360. };
  361.  
  362. struct fb_tileblit {
  363.         __u32 sx;                   /* origin in the x-axis */
  364.         __u32 sy;                   /* origin in the y-axis */
  365.         __u32 width;                /* number of tiles in the x-axis */
  366.         __u32 height;               /* number of tiles in the y-axis */
  367.         __u32 fg;                   /* foreground color */
  368.         __u32 bg;                   /* background color */
  369.         __u32 length;               /* number of tiles to draw */
  370.         __u32 *indices;             /* array of indices to tile map */
  371. };
  372.  
  373. struct fb_tilecursor {
  374.         __u32 sx;                   /* cursor position in the x-axis */
  375.         __u32 sy;                   /* cursor position in the y-axis */
  376.         __u32 mode;                 /* 0 = erase, 1 = draw */
  377.         __u32 shape;                /* see FB_TILE_CURSOR_* */
  378.         __u32 fg;                   /* foreground color */
  379.         __u32 bg;                   /* background color */
  380. };
  381.  
  382. struct fb_tile_ops {
  383.         /* set tile characteristics */
  384.         void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
  385.  
  386.         /* all dimensions from hereon are in terms of tiles */
  387.  
  388.         /* move a rectangular region of tiles from one area to another*/
  389.         void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
  390.         /* fill a rectangular region with a tile */
  391.         void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
  392.         /* copy an array of tiles */
  393.         void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
  394.         /* cursor */
  395.         void (*fb_tilecursor)(struct fb_info *info,
  396.                               struct fb_tilecursor *cursor);
  397.         /* get maximum length of the tile map */
  398.         int (*fb_get_tilemax)(struct fb_info *info);
  399. };
  400. #endif /* CONFIG_FB_TILEBLITTING */
  401.  
  402. /* FBINFO_* = fb_info.flags bit flags */
  403. #define FBINFO_MODULE           0x0001  /* Low-level driver is a module */
  404. #define FBINFO_HWACCEL_DISABLED 0x0002
  405.         /* When FBINFO_HWACCEL_DISABLED is set:
  406.          *  Hardware acceleration is turned off.  Software implementations
  407.          *  of required functions (copyarea(), fillrect(), and imageblit())
  408.          *  takes over; acceleration engine should be in a quiescent state */
  409.  
  410. /* hints */
  411. #define FBINFO_VIRTFB           0x0004 /* FB is System RAM, not device. */
  412. #define FBINFO_PARTIAL_PAN_OK   0x0040 /* otw use pan only for double-buffering */
  413. #define FBINFO_READS_FAST       0x0080 /* soft-copy faster than rendering */
  414.  
  415. /* hardware supported ops */
  416. /*  semantics: when a bit is set, it indicates that the operation is
  417.  *   accelerated by hardware.
  418.  *  required functions will still work even if the bit is not set.
  419.  *  optional functions may not even exist if the flag bit is not set.
  420.  */
  421. #define FBINFO_HWACCEL_NONE             0x0000
  422. #define FBINFO_HWACCEL_COPYAREA         0x0100 /* required */
  423. #define FBINFO_HWACCEL_FILLRECT         0x0200 /* required */
  424. #define FBINFO_HWACCEL_IMAGEBLIT        0x0400 /* required */
  425. #define FBINFO_HWACCEL_ROTATE           0x0800 /* optional */
  426. #define FBINFO_HWACCEL_XPAN             0x1000 /* optional */
  427. #define FBINFO_HWACCEL_YPAN             0x2000 /* optional */
  428. #define FBINFO_HWACCEL_YWRAP            0x4000 /* optional */
  429.  
  430. #define FBINFO_MISC_USEREVENT          0x10000 /* event request
  431.                                                   from userspace */
  432. #define FBINFO_MISC_TILEBLITTING       0x20000 /* use tile blitting */
  433.  
  434. /* A driver may set this flag to indicate that it does want a set_par to be
  435.  * called every time when fbcon_switch is executed. The advantage is that with
  436.  * this flag set you can really be sure that set_par is always called before
  437.  * any of the functions dependent on the correct hardware state or altering
  438.  * that state, even if you are using some broken X releases. The disadvantage
  439.  * is that it introduces unwanted delays to every console switch if set_par
  440.  * is slow. It is a good idea to try this flag in the drivers initialization
  441.  * code whenever there is a bug report related to switching between X and the
  442.  * framebuffer console.
  443.  */
  444. #define FBINFO_MISC_ALWAYS_SETPAR   0x40000
  445.  
  446. /* where the fb is a firmware driver, and can be replaced with a proper one */
  447. #define FBINFO_MISC_FIRMWARE        0x80000
  448. /*
  449.  * Host and GPU endianness differ.
  450.  */
  451. #define FBINFO_FOREIGN_ENDIAN   0x100000
  452. /*
  453.  * Big endian math. This is the same flags as above, but with different
  454.  * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
  455.  * and host endianness. Drivers should not use this flag.
  456.  */
  457. #define FBINFO_BE_MATH  0x100000
  458.  
  459. /* report to the VT layer that this fb driver can accept forced console
  460.    output like oopses */
  461. #define FBINFO_CAN_FORCE_OUTPUT     0x200000
  462.  
  463. struct fb_info {
  464.         atomic_t count;
  465.         int node;
  466.         int flags;
  467.         struct mutex lock;              /* Lock for open/release/ioctl funcs */
  468.         struct mutex mm_lock;           /* Lock for fb_mmap and smem_* fields */
  469.         struct fb_var_screeninfo var;   /* Current var */
  470.         struct fb_fix_screeninfo fix;   /* Current fix */
  471.         struct fb_monspecs monspecs;    /* Current Monitor specs */
  472. //   struct work_struct queue;   /* Framebuffer event queue */
  473. //   struct fb_pixmap pixmap;    /* Image hardware mapper */
  474. //   struct fb_pixmap sprite;    /* Cursor hardware mapper */
  475. //   struct fb_cmap cmap;        /* Current cmap */
  476.         struct list_head modelist;      /* mode list */
  477.         struct fb_videomode *mode;      /* current mode */
  478.  
  479. #ifdef CONFIG_FB_BACKLIGHT
  480.         /* assigned backlight device */
  481.         /* set before framebuffer registration,
  482.            remove after unregister */
  483.         struct backlight_device *bl_dev;
  484.  
  485.         /* Backlight level curve */
  486.         struct mutex bl_curve_mutex;   
  487.         u8 bl_curve[FB_BACKLIGHT_LEVELS];
  488. #endif
  489. #ifdef CONFIG_FB_DEFERRED_IO
  490.         struct delayed_work deferred_work;
  491.         struct fb_deferred_io *fbdefio;
  492. #endif
  493.  
  494.         struct fb_ops *fbops;
  495.         struct device *device;          /* This is the parent */
  496.         struct device *dev;             /* This is this fb device */
  497.         int class_flag;                    /* private sysfs flags */
  498. #ifdef CONFIG_FB_TILEBLITTING
  499.         struct fb_tile_ops *tileops;    /* Tile Blitting */
  500. #endif
  501.         union {
  502.                 char __iomem *screen_base;      /* Virtual address */
  503.                 char *screen_buffer;
  504.         };
  505.         unsigned long screen_size;      /* Amount of ioremapped VRAM or 0 */
  506.         void *pseudo_palette;           /* Fake palette of 16 colors */
  507. #define FBINFO_STATE_RUNNING    0
  508. #define FBINFO_STATE_SUSPENDED  1
  509.         u32 state;                      /* Hardware state i.e suspend */
  510.         void *fbcon_par;                /* fbcon use-only private area */
  511.         /* From here on everything is device dependent */
  512.         void *par;
  513.         /* we need the PCI or similar aperture base/size not
  514.            smem_start/size as smem_start may just be an object
  515.            allocated inside the aperture so may not actually overlap */
  516.         struct apertures_struct {
  517.                 unsigned int count;
  518.                 struct aperture {
  519.                         resource_size_t base;
  520.                         resource_size_t size;
  521.                 } ranges[0];
  522.         } *apertures;
  523.  
  524.         bool skip_vt_switch; /* no VT switch on suspend/resume required */
  525. };
  526.  
  527. static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
  528.         struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
  529.                         + max_num * sizeof(struct aperture), GFP_KERNEL);
  530.         if (!a)
  531.                 return NULL;
  532.         a->count = max_num;
  533.         return a;
  534. }
  535.  
  536. #ifdef MODULE
  537. #define FBINFO_DEFAULT  FBINFO_MODULE
  538. #else
  539. #define FBINFO_DEFAULT  0
  540. #endif
  541.  
  542. // This will go away
  543. #define FBINFO_FLAG_MODULE      FBINFO_MODULE
  544. #define FBINFO_FLAG_DEFAULT     FBINFO_DEFAULT
  545.  
  546. /* This will go away
  547.  * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
  548.  * when it wants to turn the acceleration engine on.  This is
  549.  * really a separate operation, and should be modified via sysfs.
  550.  *  But for now, we leave it broken with the following define
  551.  */
  552. #define STUPID_ACCELF_TEXT_SHIT
  553.  
  554. // This will go away
  555. #if defined(__sparc__)
  556.  
  557. /* We map all of our framebuffers such that big-endian accesses
  558.  * are what we want, so the following is sufficient.
  559.  */
  560.  
  561. // This will go away
  562. #define fb_readb sbus_readb
  563. #define fb_readw sbus_readw
  564. #define fb_readl sbus_readl
  565. #define fb_readq sbus_readq
  566. #define fb_writeb sbus_writeb
  567. #define fb_writew sbus_writew
  568. #define fb_writel sbus_writel
  569. #define fb_writeq sbus_writeq
  570. #define fb_memset sbus_memset_io
  571. #define fb_memcpy_fromfb sbus_memcpy_fromio
  572. #define fb_memcpy_tofb sbus_memcpy_toio
  573.  
  574. #elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
  575.  
  576. #define fb_readb __raw_readb
  577. #define fb_readw __raw_readw
  578. #define fb_readl __raw_readl
  579. #define fb_readq __raw_readq
  580. #define fb_writeb __raw_writeb
  581. #define fb_writew __raw_writew
  582. #define fb_writel __raw_writel
  583. #define fb_writeq __raw_writeq
  584. #define fb_memset memset_io
  585. #define fb_memcpy_fromfb memcpy_fromio
  586. #define fb_memcpy_tofb memcpy_toio
  587.  
  588. #else
  589.  
  590. #define fb_readb(addr) (*(volatile u8 *) (addr))
  591. #define fb_readw(addr) (*(volatile u16 *) (addr))
  592. #define fb_readl(addr) (*(volatile u32 *) (addr))
  593. #define fb_readq(addr) (*(volatile u64 *) (addr))
  594. #define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
  595. #define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
  596. #define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
  597. #define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
  598. #define fb_memset memset
  599. #define fb_memcpy_fromfb memcpy
  600. #define fb_memcpy_tofb memcpy
  601.  
  602. #endif
  603.  
  604. #define FB_LEFT_POS(p, bpp)          (fb_be_math(p) ? (32 - (bpp)) : 0)
  605. #define FB_SHIFT_HIGH(p, val, bits)  (fb_be_math(p) ? (val) >> (bits) : \
  606.                                                       (val) << (bits))
  607. #define FB_SHIFT_LOW(p, val, bits)   (fb_be_math(p) ? (val) << (bits) : \
  608.                                                       (val) >> (bits))
  609.  
  610.     /*
  611.      *  `Generic' versions of the frame buffer device operations
  612.      */
  613.  
  614. extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
  615. extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
  616. extern int fb_blank(struct fb_info *info, int blank);
  617. extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
  618. extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
  619. extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
  620. /*
  621.  * Drawing operations where framebuffer is in system RAM
  622.  */
  623. extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
  624. extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
  625. extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
  626. extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
  627.                            size_t count, loff_t *ppos);
  628. extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
  629.                             size_t count, loff_t *ppos);
  630.  
  631. /* drivers/video/fbmem.c */
  632. extern int register_framebuffer(struct fb_info *fb_info);
  633. extern int unregister_framebuffer(struct fb_info *fb_info);
  634. extern int unlink_framebuffer(struct fb_info *fb_info);
  635. extern int remove_conflicting_framebuffers(struct apertures_struct *a,
  636.                                            const char *name, bool primary);
  637. extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
  638. extern int fb_show_logo(struct fb_info *fb_info, int rotate);
  639. extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
  640. extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
  641.                                 u32 height, u32 shift_high, u32 shift_low, u32 mod);
  642. extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
  643. extern void fb_set_suspend(struct fb_info *info, int state);
  644. extern int fb_get_color_depth(struct fb_var_screeninfo *var,
  645.                               struct fb_fix_screeninfo *fix);
  646. extern int fb_get_options(const char *name, char **option);
  647. extern int fb_new_modelist(struct fb_info *info);
  648.  
  649. extern struct fb_info *registered_fb[FB_MAX];
  650. extern int num_registered_fb;
  651. extern struct class *fb_class;
  652.  
  653. extern int lock_fb_info(struct fb_info *info);
  654.  
  655. static inline void unlock_fb_info(struct fb_info *info)
  656. {
  657.         mutex_unlock(&info->lock);
  658. }
  659.  
  660. static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
  661.                                            u8 *src, u32 s_pitch, u32 height)
  662. {
  663.         u32 i, j;
  664.  
  665.         d_pitch -= s_pitch;
  666.  
  667.         for (i = height; i--; ) {
  668.                 /* s_pitch is a few bytes at the most, memcpy is suboptimal */
  669.                 for (j = 0; j < s_pitch; j++)
  670.                         *dst++ = *src++;
  671.                 dst += d_pitch;
  672.         }
  673. }
  674.  
  675. /* drivers/video/fb_defio.c */
  676. extern void fb_deferred_io_init(struct fb_info *info);
  677. extern void fb_deferred_io_open(struct fb_info *info,
  678.                                 struct inode *inode,
  679.                                 struct file *file);
  680. extern void fb_deferred_io_cleanup(struct fb_info *info);
  681. extern int fb_deferred_io_fsync(struct file *file, loff_t start,
  682.                                 loff_t end, int datasync);
  683.  
  684. static inline bool fb_be_math(struct fb_info *info)
  685. {
  686. #ifdef CONFIG_FB_FOREIGN_ENDIAN
  687. #if defined(CONFIG_FB_BOTH_ENDIAN)
  688.         return info->flags & FBINFO_BE_MATH;
  689. #elif defined(CONFIG_FB_BIG_ENDIAN)
  690.         return true;
  691. #elif defined(CONFIG_FB_LITTLE_ENDIAN)
  692.         return false;
  693. #endif /* CONFIG_FB_BOTH_ENDIAN */
  694. #else
  695. #ifdef __BIG_ENDIAN
  696.         return true;
  697. #else
  698.         return false;
  699. #endif /* __BIG_ENDIAN */
  700. #endif /* CONFIG_FB_FOREIGN_ENDIAN */
  701. }
  702.  
  703. /* drivers/video/fbsysfs.c */
  704. extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
  705. extern void framebuffer_release(struct fb_info *info);
  706. extern int fb_init_device(struct fb_info *fb_info);
  707. extern void fb_cleanup_device(struct fb_info *head);
  708. extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
  709.  
  710. /* drivers/video/fbmon.c */
  711. #define FB_MAXTIMINGS           0
  712. #define FB_VSYNCTIMINGS         1
  713. #define FB_HSYNCTIMINGS         2
  714. #define FB_DCLKTIMINGS          3
  715. #define FB_IGNOREMON            0x100
  716.  
  717. #define FB_MODE_IS_UNKNOWN      0
  718. #define FB_MODE_IS_DETAILED     1
  719. #define FB_MODE_IS_STANDARD     2
  720. #define FB_MODE_IS_VESA         4
  721. #define FB_MODE_IS_CALCULATED   8
  722. #define FB_MODE_IS_FIRST        16
  723. #define FB_MODE_IS_FROM_VAR     32
  724.  
  725. extern int fbmon_dpms(const struct fb_info *fb_info);
  726. extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
  727.                        struct fb_info *info);
  728. extern int fb_validate_mode(const struct fb_var_screeninfo *var,
  729.                             struct fb_info *info);
  730. extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
  731. extern const unsigned char *fb_firmware_edid(struct device *device);
  732. extern void fb_edid_to_monspecs(unsigned char *edid,
  733.                                 struct fb_monspecs *specs);
  734. extern void fb_edid_add_monspecs(unsigned char *edid,
  735.                                  struct fb_monspecs *specs);
  736. extern void fb_destroy_modedb(struct fb_videomode *modedb);
  737. extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
  738. extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
  739.  
  740. extern int of_get_fb_videomode(struct device_node *np,
  741.                                struct fb_videomode *fb,
  742.                                int index);
  743. extern int fb_videomode_from_videomode(const struct videomode *vm,
  744.                                        struct fb_videomode *fbmode);
  745.  
  746. /* drivers/video/modedb.c */
  747. #define VESA_MODEDB_SIZE 43
  748. #define DMT_SIZE 0x50
  749.  
  750. extern void fb_var_to_videomode(struct fb_videomode *mode,
  751.                                 const struct fb_var_screeninfo *var);
  752. extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
  753.                                 const struct fb_videomode *mode);
  754. extern int fb_mode_is_equal(const struct fb_videomode *mode1,
  755.                             const struct fb_videomode *mode2);
  756. extern int fb_add_videomode(const struct fb_videomode *mode,
  757.                             struct list_head *head);
  758. extern void fb_delete_videomode(const struct fb_videomode *mode,
  759.                                 struct list_head *head);
  760. extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
  761.                                                 struct list_head *head);
  762. extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
  763.                                                     struct list_head *head);
  764. extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
  765.                                                        struct list_head *head);
  766. extern void fb_destroy_modelist(struct list_head *head);
  767. extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
  768.                                      struct list_head *head);
  769. extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
  770.                                                        struct list_head *head);
  771.  
  772. /* drivers/video/fbcmap.c */
  773. extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
  774. extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
  775. extern void fb_dealloc_cmap(struct fb_cmap *cmap);
  776. extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
  777. extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
  778. extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
  779. extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
  780. extern const struct fb_cmap *fb_default_cmap(int len);
  781. extern void fb_invert_cmaps(void);
  782.  
  783. struct fb_videomode {
  784.         const char *name;       /* optional */
  785.         u32 refresh;            /* optional */
  786.         u32 xres;
  787.         u32 yres;
  788.         u32 pixclock;
  789.         u32 left_margin;
  790.         u32 right_margin;
  791.         u32 upper_margin;
  792.         u32 lower_margin;
  793.         u32 hsync_len;
  794.         u32 vsync_len;
  795.         u32 sync;
  796.         u32 vmode;
  797.         u32 flag;
  798. };
  799.  
  800. struct dmt_videomode {
  801.         u32 dmt_id;
  802.         u32 std_2byte_code;
  803.         u32 cvt_3byte_code;
  804.         const struct fb_videomode *mode;
  805. };
  806.  
  807. extern const char *fb_mode_option;
  808. extern const struct fb_videomode vesa_modes[];
  809. extern const struct fb_videomode cea_modes[65];
  810. extern const struct dmt_videomode dmt_modes[];
  811.  
  812. struct fb_modelist {
  813.         struct list_head list;
  814.         struct fb_videomode mode;
  815. };
  816.  
  817. extern int fb_find_mode(struct fb_var_screeninfo *var,
  818.                         struct fb_info *info, const char *mode_option,
  819.                         const struct fb_videomode *db,
  820.                         unsigned int dbsize,
  821.                         const struct fb_videomode *default_mode,
  822.                         unsigned int default_bpp);
  823.  
  824. /* Convenience logging macros */
  825. #define fb_err(fb_info, fmt, ...)                                       \
  826.         pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
  827. #define fb_notice(info, fmt, ...)                                       \
  828.         pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
  829. #define fb_warn(fb_info, fmt, ...)                                      \
  830.         pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
  831. #define fb_info(fb_info, fmt, ...)                                      \
  832.         pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
  833. #define fb_dbg(fb_info, fmt, ...)                                       \
  834.         pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
  835.  
  836. #endif /* _LINUX_FB_H */
  837.