fb.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 812 行 · 第 1/2 页

struct fb_cmap_user {
	__u32 start;			/* First entry	*/
	__u32 len;			/* Number of entries */
	__u16 __user *red;		/* Red values	*/
	__u16 __user *green;
	__u16 __user *blue;
	__u16 __user *transp;		/* transparency, can be NULL */
};

struct fb_image_user {
	__u32 dx;			/* Where to place image */
	__u32 dy;
	__u32 width;			/* Size of image */
	__u32 height;
	__u32 fg_color;			/* Only used when a mono bitmap */
	__u32 bg_color;
	__u8  depth;			/* Depth of the image */
	const char __user *data;	/* Pointer to image data */
	struct fb_cmap_user cmap;	/* color map info */
};

struct fb_cursor_user {
	__u16 set;			/* what to set */
	__u16 enable;			/* cursor on/off */
	__u16 rop;			/* bitop operation */
	const char __user *mask;	/* cursor mask bits */
	struct fbcurpos hot;		/* cursor hot spot */
	struct fb_image_user image;	/* Cursor image */
};

/*
 * Register/unregister for framebuffer events
 */

/*	The resolution of the passed in fb_info about to change */ 
#define FB_EVENT_MODE_CHANGE		0x01
/*	The display on this fb_info is beeing suspended, no access to the
 *	framebuffer is allowed any more after that call returns
 */
#define FB_EVENT_SUSPEND		0x02
/*	The display on this fb_info was resumed, you can restore the display
 *	if you own it
 */
#define FB_EVENT_RESUME			0x03
/*      An entry from the modelist was removed */
#define FB_EVENT_MODE_DELETE            0x04
/*      A driver registered itself */
#define FB_EVENT_FB_REGISTERED          0x05
/*      get console to framebuffer mapping */
#define FB_EVENT_GET_CONSOLE_MAP        0x06
/*      set console to framebuffer mapping */
#define FB_EVENT_SET_CONSOLE_MAP        0x07


struct fb_event {
	struct fb_info *info;
	void *data;
};


extern int fb_register_client(struct notifier_block *nb);
extern int fb_unregister_client(struct notifier_block *nb);

/*
 * Pixmap structure definition
 *
 * The purpose of this structure is to translate data
 * from the hardware independent format of fbdev to what
 * format the hardware needs.
 */

#define FB_PIXMAP_DEFAULT 1     /* used internally by fbcon */
#define FB_PIXMAP_SYSTEM  2     /* memory is in system RAM  */
#define FB_PIXMAP_IO      4     /* memory is iomapped       */
#define FB_PIXMAP_SYNC    256   /* set if GPU can DMA       */

struct fb_pixmap {
	u8  *addr;		/* pointer to memory			*/
	u32 size;		/* size of buffer in bytes		*/
	u32 offset;		/* current offset to buffer		*/
	u32 buf_align;		/* byte alignment of each bitmap	*/
	u32 scan_align;		/* alignment per scanline		*/
	u32 access_align;	/* alignment per read/write		*/
	u32 flags;		/* see FB_PIXMAP_*			*/
	/* access methods */
	void (*outbuf)(struct fb_info *info, u8 *addr, u8 *src, unsigned int size);
	u8   (*inbuf) (struct fb_info *info, u8 *addr);
};


/*
 * Frame buffer operations
 *
 * LOCKING NOTE: those functions must _ALL_ be called with the console
 * semaphore held, this is the only suitable locking mecanism we have
 * in 2.6. Some may be called at interrupt time at this point though.
 */

struct fb_ops {
	/* open/release and usage marking */
	struct module *owner;
	int (*fb_open)(struct fb_info *info, int user);
	int (*fb_release)(struct fb_info *info, int user);

	/* For framebuffers with strange non linear layouts or that do not
	 * work with normal memory mapped access
	 */
	ssize_t (*fb_read)(struct file *file, char __user *buf, size_t count, loff_t *ppos);
	ssize_t (*fb_write)(struct file *file, const char __user *buf, size_t count, loff_t *ppos);

	/* checks var and eventually tweaks it to something supported,
	 * DO NOT MODIFY PAR */
	int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);

	/* set the video mode according to info->var */
	int (*fb_set_par)(struct fb_info *info);

	/* set color register */
	int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
			    unsigned blue, unsigned transp, struct fb_info *info);

	/* blank display */
	int (*fb_blank)(int blank, struct fb_info *info);

	/* pan display */
	int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);

	/* Draws a rectangle */
	void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
	/* Copy data from area to another */
	void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
	/* Draws a image to the display */
	void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);

	/* Draws cursor */
	int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);

	/* Rotates the display */
	void (*fb_rotate)(struct fb_info *info, int angle);

	/* wait for blit idle, optional */
	int (*fb_sync)(struct fb_info *info);

	/* perform fb specific ioctl (optional) */
	int (*fb_ioctl)(struct inode *inode, struct file *file, unsigned int cmd,
			unsigned long arg, struct fb_info *info);

	/* perform fb specific mmap */
	int (*fb_mmap)(struct fb_info *info, struct file *file, struct vm_area_struct *vma);
};

/* FBINFO_* = fb_info.flags bit flags */
#define FBINFO_MODULE		0x0001	/* Low-level driver is a module */
#define FBINFO_HWACCEL_DISABLED	0x0002
	/* When FBINFO_HWACCEL_DISABLED is set:
	 *  Hardware acceleration is turned off.  Software implementations
	 *  of required functions (copyarea(), fillrect(), and imageblit())
	 *  takes over; acceleration engine should be in a quiescent state */

/* hints */
#define FBINFO_PARTIAL_PAN_OK	0x0040 /* otw use pan only for double-buffering */
#define FBINFO_READS_FAST	0x0080 /* soft-copy faster than rendering */

/* hardware supported ops */
/*  semantics: when a bit is set, it indicates that the operation is
 *   accelerated by hardware.
 *  required functions will still work even if the bit is not set.
 *  optional functions may not even exist if the flag bit is not set.
 */
#define FBINFO_HWACCEL_NONE		0x0000
#define FBINFO_HWACCEL_COPYAREA		0x0100 /* required */
#define FBINFO_HWACCEL_FILLRECT		0x0200 /* required */
#define FBINFO_HWACCEL_IMAGEBLIT	0x0400 /* required */
#define FBINFO_HWACCEL_ROTATE		0x0800 /* optional */
#define FBINFO_HWACCEL_XPAN		0x1000 /* optional */
#define FBINFO_HWACCEL_YPAN		0x2000 /* optional */
#define FBINFO_HWACCEL_YWRAP		0x4000 /* optional */

#define FBINFO_MISC_MODECHANGEUSER     0x10000 /* mode change request
						  from userspace */
#define FBINFO_MISC_MODESWITCH         0x20000 /* mode switch */
#define FBINFO_MISC_MODESWITCHLATE     0x40000 /* init hardware later */

struct fb_info {
	int node;
	int flags;
	struct fb_var_screeninfo var;	/* Current var */
	struct fb_fix_screeninfo fix;	/* Current fix */
	struct fb_monspecs monspecs;	/* Current Monitor specs */
	struct fb_cursor cursor;	/* Current cursor */	
	struct work_struct queue;	/* Framebuffer event queue */
	struct timer_list cursor_timer; /* Cursor timer */
	struct fb_pixmap pixmap;	/* Image hardware mapper */
	struct fb_pixmap sprite;	/* Cursor hardware mapper */
	struct fb_cmap cmap;		/* Current cmap */
	struct list_head modelist;      /* mode list */
	struct fb_ops *fbops;
	char __iomem *screen_base;	/* Virtual address */
	unsigned long screen_size;	/* Amount of ioremapped VRAM or 0 */ 
	int currcon;			/* Current VC. */
	void *pseudo_palette;		/* Fake palette of 16 colors */ 
#define FBINFO_STATE_RUNNING	0
#define FBINFO_STATE_SUSPENDED	1
	u32 state;			/* Hardware state i.e suspend */

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

#ifdef MODULE
#define FBINFO_DEFAULT	FBINFO_MODULE
#else
#define FBINFO_DEFAULT	0
#endif

// This will go away
#define FBINFO_FLAG_MODULE	FBINFO_MODULE
#define FBINFO_FLAG_DEFAULT	FBINFO_DEFAULT

/* This will go away
 * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
 * when it wants to turn the acceleration engine on.  This is
 * really a separate operation, and should be modified via sysfs.
 *  But for now, we leave it broken with the following define
 */
#define STUPID_ACCELF_TEXT_SHIT

// This will go away
#if defined(__sparc__)

/* We map all of our framebuffers such that big-endian accesses
 * are what we want, so the following is sufficient.
 */

// This will go away
#define fb_readb sbus_readb
#define fb_readw sbus_readw
#define fb_readl sbus_readl
#define fb_readq sbus_readq
#define fb_writeb sbus_writeb
#define fb_writew sbus_writew
#define fb_writel sbus_writel
#define fb_writeq sbus_writeq
#define fb_memset sbus_memset_io

#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || (defined(__sh__) && !defined(__SH5__)) || defined(__powerpc__)

#define fb_readb __raw_readb
#define fb_readw __raw_readw
#define fb_readl __raw_readl
#define fb_readq __raw_readq
#define fb_writeb __raw_writeb
#define fb_writew __raw_writew
#define fb_writel __raw_writel
#define fb_writeq __raw_writeq
#define fb_memset memset_io

#else

#define fb_readb(addr) (*(volatile u8 *) (addr))
#define fb_readw(addr) (*(volatile u16 *) (addr))
#define fb_readl(addr) (*(volatile u32 *) (addr))
#define fb_readq(addr) (*(volatile u64 *) (addr))
#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
#define fb_memset memset

#endif

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

extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); 
extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); 
extern int fb_blank(struct fb_info *info, int blank);
extern int soft_cursor(struct fb_info *info, struct fb_cursor *cursor);
extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); 
extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); 
extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);

/* drivers/video/fbmem.c */
extern int register_framebuffer(struct fb_info *fb_info);
extern int unregister_framebuffer(struct fb_info *fb_info);
extern int fb_prepare_logo(struct fb_info *fb_info);
extern int fb_show_logo(struct fb_info *fb_info);
extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
extern void fb_iomove_buf_unaligned(struct fb_info *info, struct fb_pixmap *buf,
				u8 *dst, u32 d_pitch, u8 *src, u32 idx,
				u32 height, u32 shift_high, u32 shift_low, u32 mod);
extern void fb_iomove_buf_aligned(struct fb_info *info, struct fb_pixmap *buf,
				u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch,
				u32 height);
extern void fb_sysmove_buf_unaligned(struct fb_info *info, struct fb_pixmap *buf,
				u8 *dst, u32 d_pitch, u8 *src, u32 idx,
				u32 height, u32 shift_high, u32 shift_low, u32 mod);
extern void fb_sysmove_buf_aligned(struct fb_info *info, struct fb_pixmap *buf,
				u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch,
				u32 height);
extern void fb_load_cursor_image(struct fb_info *);
extern void fb_set_suspend(struct fb_info *info, int state);
extern int fb_get_color_depth(struct fb_info *info);
extern int fb_get_options(char *name, char **option);

extern struct fb_info *registered_fb[FB_MAX];
extern int num_registered_fb;

/* drivers/video/fbsysfs.c */
extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
extern void framebuffer_release(struct fb_info *info);

/* drivers/video/fbmon.c */
#define FB_MAXTIMINGS		0
#define FB_VSYNCTIMINGS		1
#define FB_HSYNCTIMINGS		2
#define FB_DCLKTIMINGS		3
#define FB_IGNOREMON		0x100

#define FB_MODE_IS_UNKNOWN	0
#define FB_MODE_IS_DETAILED	1
#define FB_MODE_IS_STANDARD	2
#define FB_MODE_IS_VESA		4
#define FB_MODE_IS_CALCULATED	8
#define FB_MODE_IS_FIRST	16
#define FB_MODE_IS_FROM_VAR     32

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 fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
		       struct fb_info *info);
extern int fb_validate_mode(const struct fb_var_screeninfo *var,
			    struct fb_info *info);
extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
extern int fb_get_monitor_limits(unsigned char *edid, struct fb_monspecs *specs);
extern void fb_edid_to_monspecs(unsigned char *edid, struct fb_monspecs *specs);
extern int fb_get_monitor_limits(unsigned char *edid, struct fb_monspecs *specs);
extern struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize);
extern void fb_destroy_modedb(struct fb_videomode *modedb);

/* drivers/video/modedb.c */
#define VESA_MODEDB_SIZE 34
extern const struct fb_videomode vesa_modes[];
extern void fb_var_to_videomode(struct fb_videomode *mode,
				struct fb_var_screeninfo *var);
extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
				struct fb_videomode *mode);
extern int fb_mode_is_equal(struct fb_videomode *mode1,
			    struct fb_videomode *mode2);
extern int fb_add_videomode(struct fb_videomode *mode, struct list_head *head);
extern void fb_delete_videomode(struct fb_videomode *mode,
				struct list_head *head);
extern struct fb_videomode *fb_match_mode(struct fb_var_screeninfo *var,
					  struct list_head *head);
extern struct fb_videomode *fb_find_best_mode(struct fb_var_screeninfo *var,
					      struct list_head *head);
extern void fb_destroy_modelist(struct list_head *head);
extern void fb_videomode_to_modelist(struct fb_videomode *modedb, int num,
				     struct list_head *head);

/* drivers/video/fbcmap.c */
extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
extern void fb_dealloc_cmap(struct fb_cmap *cmap);
extern int fb_copy_cmap(struct fb_cmap *from, struct fb_cmap *to);
extern int fb_cmap_to_user(struct fb_cmap *from, struct fb_cmap_user *to);
extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
extern struct fb_cmap *fb_default_cmap(int len);
extern void fb_invert_cmaps(void);

struct fb_videomode {
	const char *name;	/* optional */
	u32 refresh;		/* optional */
	u32 xres;
	u32 yres;
	u32 pixclock;
	u32 left_margin;
	u32 right_margin;
	u32 upper_margin;
	u32 lower_margin;
	u32 hsync_len;
	u32 vsync_len;
	u32 sync;
	u32 vmode;
	u32 flag;
};

struct fb_modelist {
	struct list_head list;
	struct fb_videomode mode;
};

extern int fb_find_mode(struct fb_var_screeninfo *var,
			struct fb_info *info, const char *mode_option,
			const struct fb_videomode *db,
			unsigned int dbsize,
			const struct fb_videomode *default_mode,
			unsigned int default_bpp);

#endif /* __KERNEL__ */

#endif /* _LINUX_FB_H */