fb.h

基于s3c2410的摄像头驱动

   /*
    *    This is the interface between the low-level console driver and the
    *    low-level frame buffer device
    */

struct display {
    /* Filled in by the frame buffer device */

    struct fb_var_screeninfo var;   /* variable infos. yoffset and vmode */
				    /* are updated by fbcon.c */
    struct fb_cmap cmap;            /* colormap */
    char *screen_base;              /* pointer to top of virtual screen */    
				    /* (virtual address) */
    int visual;
    int type;                       /* see FB_TYPE_* */
    int type_aux;                   /* Interleave for interleaved Planes */
    u_short ypanstep;               /* zero if no hardware ypan */
    u_short ywrapstep;              /* zero if no hardware ywrap */
    u_long line_length;             /* length of a line in bytes */
    u_short can_soft_blank;         /* zero if no hardware blanking */
    u_short inverse;                /* != 0 text black on white as default */
    struct display_switch *dispsw;  /* low level operations */
    void *dispsw_data;		    /* optional dispsw helper data */

#if 0
    struct fb_fix_cursorinfo fcrsr;
    struct fb_var_cursorinfo *vcrsr;
    struct fb_cursorstate crsrstate;
#endif

    /* Filled in by the low-level console driver */

    struct vc_data *conp;           /* pointer to console data */
    struct fb_info *fb_info;        /* frame buffer for this console */
    int vrows;                      /* number of virtual rows */
    unsigned short cursor_x;	    /* current cursor position */
    unsigned short cursor_y;
    int fgcol;                      /* text colors */
    int bgcol;
    u_long next_line;               /* offset to one line below */
    u_long next_plane;              /* offset to next plane */
    u_char *fontdata;               /* Font associated to this display */
    unsigned short _fontheightlog;
    unsigned short _fontwidthlog;
    unsigned short _fontheight;
    unsigned short _fontwidth;
    int userfont;                   /* != 0 if fontdata kmalloc()ed */
    u_short scrollmode;             /* Scroll Method */
    short yscroll;                  /* Hardware scrolling */
    unsigned char fgshift, bgshift;
    unsigned short charmask;	    /* 0xff or 0x1ff */
};


struct fb_info {
   char modename[40];			/* default video mode */
   kdev_t node;
   int flags;
#define FBINFO_FLAG_MODULE	1	/* Low-level driver is a module */
   struct fb_ops *fbops;
   struct fb_monspecs monspecs;
   struct display *disp;		/* initial display variable */
   struct vc_data *display_fg;		/* Console visible on this display */
   char fontname[40];			/* default font name */
   int (*changevar)(int);		/* tell console var has changed */
   int (*switch_con)(int, struct fb_info*);
					/* tell fb to switch consoles */
   int (*updatevar)(int, struct fb_info*);
					/* tell fb to update the vars */
   void (*blank)(int, struct fb_info*);	/* tell fb to (un)blank the screen */
					/* arg = 0: unblank */
					/* arg > 0: VESA level (arg-1) */

   /* From here on everything is device dependent */
};

#ifdef MODULE
#define FBINFO_FLAG_DEFAULT	FBINFO_FLAG_MODULE
#else
#define FBINFO_FLAG_DEFAULT	0
#endif

    /*
     *  This structure abstracts from the underlying hardware. It is not
     *  mandatory but used by the `generic' frame buffer operations.
     *  Read drivers/video/skeletonfb.c for more information.
     */

struct fbgen_hwswitch {
    void (*detect)(void);
    int (*encode_fix)(struct fb_fix_screeninfo *fix, const void *par,
		      struct fb_info_gen *info);
    int (*decode_var)(const struct fb_var_screeninfo *var, void *par,
		      struct fb_info_gen *info);
    int (*encode_var)(struct fb_var_screeninfo *var, const void *par,
		      struct fb_info_gen *info);
    void (*get_par)(void *par, struct fb_info_gen *info);
    void (*set_par)(const void *par, struct fb_info_gen *info);
    int (*getcolreg)(unsigned regno, unsigned *red, unsigned *green,
		     unsigned *blue, unsigned *transp, struct fb_info *info);
    int (*setcolreg)(unsigned regno, unsigned red, unsigned green,
		     unsigned blue, unsigned transp, struct fb_info *info);
    int (*pan_display)(const struct fb_var_screeninfo *var,
		       struct fb_info_gen *info);
    int (*blank)(int blank_mode, struct fb_info_gen *info);
    void (*set_disp)(const void *par, struct display *disp,
		     struct fb_info_gen *info);
};

struct fb_info_gen {
    struct fb_info info;

    /* Entries for a generic frame buffer device */
    /* Yes, this starts looking like C++ */
    u_int parsize;
    struct fbgen_hwswitch *fbhw;

   /* From here on everything is device dependent */
};

    /*
     *  `Generic' versions of the frame buffer device operations
     */

extern int fbgen_get_fix(struct fb_fix_screeninfo *fix, int con,
			 struct fb_info *info);
extern int fbgen_get_var(struct fb_var_screeninfo *var, int con,
			 struct fb_info *info);
extern int fbgen_set_var(struct fb_var_screeninfo *var, int con,
			 struct fb_info *info);
extern int fbgen_get_cmap(struct fb_cmap *cmap, int kspc, int con,
			  struct fb_info *info);
extern int fbgen_set_cmap(struct fb_cmap *cmap, int kspc, int con,
			  struct fb_info *info);
extern int fbgen_pan_display(struct fb_var_screeninfo *var, int con,
			     struct fb_info *info);
extern int fbgen_ioctl(struct inode *inode, struct file *file,
		       unsigned int cmd, unsigned long arg, int con,
		       struct fb_info *info);

    /*
     *  Helper functions
     */

extern int fbgen_do_set_var(struct fb_var_screeninfo *var, int isactive,
			    struct fb_info_gen *info);
extern void fbgen_set_disp(int con, struct fb_info_gen *info);
extern void fbgen_install_cmap(int con, struct fb_info_gen *info);
extern int fbgen_update_var(int con, struct fb_info *info);
extern int fbgen_switch(int con, struct fb_info *info);
extern void fbgen_blank(int blank, struct fb_info *info);


struct fb_videomode {
    const char *name;
    struct fb_var_screeninfo var;
};


/* drivers/char/fbmem.c */
extern int register_framebuffer(struct fb_info *fb_info);
extern int unregister_framebuffer(const struct fb_info *fb_info);
extern int fbmon_valid_timings(u_int pixclock, u_int htotal, u_int vtotal,
			       const struct fb_info *fb_info);
extern int fbmon_dpms(const struct fb_info *fb_info);


extern int num_registered_fb;
extern struct fb_info *registered_fb[FB_MAX];
extern char con2fb_map[MAX_NR_CONSOLES];

/* drivers/video/fbcon.c */
extern struct display fb_display[MAX_NR_CONSOLES];

/* drivers/video/fbcmap.c */
extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
extern void fb_copy_cmap(struct fb_cmap *from, struct fb_cmap *to,
			 int fsfromto);
extern int fb_get_cmap(struct fb_cmap *cmap, int kspc,
		       int (*getcolreg)(u_int, u_int *, u_int *, u_int *,
					u_int *, struct fb_info *),
		       struct fb_info *fb_info);
extern int fb_set_cmap(struct fb_cmap *cmap, int kspc,
		       int (*setcolreg)(u_int, u_int, u_int, u_int, u_int,
					struct fb_info *),
		       struct fb_info *fb_info);
extern struct fb_cmap *fb_default_cmap(int len);
extern void fb_invert_cmaps(void);

/* VESA Blanking Levels */
#define VESA_NO_BLANKING	0
#define VESA_VSYNC_SUSPEND	1
#define VESA_HSYNC_SUSPEND	2
#define VESA_POWERDOWN		3

#endif /* __KERNEL__ */

#if 1

#define FBCMD_GET_CURRENTPAR	0xDEAD0005
#define FBCMD_SET_CURRENTPAR	0xDEAD8005

#endif


#if 1 /* Preliminary */

   /*
    *    Hardware Cursor
    */

#define FBIOGET_FCURSORINFO     0x4607
#define FBIOGET_VCURSORINFO     0x4608
#define FBIOPUT_VCURSORINFO     0x4609
#define FBIOGET_CURSORSTATE     0x460A
#define FBIOPUT_CURSORSTATE     0x460B


struct fb_fix_cursorinfo {
	__u16 crsr_width;		/* width and height of the cursor in */
	__u16 crsr_height;		/* pixels (zero if no cursor)	*/
	__u16 crsr_xsize;		/* cursor size in display pixels */
	__u16 crsr_ysize;
	__u16 crsr_color1;		/* colormap entry for cursor color1 */
	__u16 crsr_color2;		/* colormap entry for cursor color2 */
};

struct fb_var_cursorinfo {
	__u16 width;
	__u16 height;
	__u16 xspot;
	__u16 yspot;
	__u8 data[1];			/* field with [height][width]        */
};

struct fb_cursorstate {
	__s16 xoffset;
	__s16 yoffset;
	__u16 mode;
};

#define FB_CURSOR_OFF		0
#define FB_CURSOR_ON		1
#define FB_CURSOR_FLASH		2

#endif /* Preliminary */

#endif /* _LINUX_FB_H */