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/*
/////////////////////////////////////////////////////////////////////////////
// $Header$
//
// Copyright (c) 2000 - Rosimildo da Silva
//
// MODULE DESCRIPTION:
// Micro FrameBuffer interface for Embedded Systems.
//
// MODIFICATION/HISTORY:
//
// $Log$
//
/////////////////////////////////////////////////////////////////////////////
*/
#ifndef _MW_FB_H
#define _MW_FB_H
#ifdef __cplusplus
extern "C" {
#endif
/* ioctls
0x46 is 'F' */
#define FB_SCREENINFO 0x4601
#define FB_GETPALETTE 0x4602
#define FB_SETPALETTE 0x4603
#define FB_EXEC_FUNCTION 0x4604
#define FB_TYPE_PACKED_PIXELS 0 /* Packed Pixels */
#define FB_TYPE_PLANES 1 /* Non interleaved planes */
#define FB_TYPE_INTERLEAVED_PLANES 2 /* Interleaved planes */
#define FB_TYPE_TEXT 3 /* Text/attributes */
#define FB_TYPE_VGA_PLANES 4 /* EGA/VGA planes */
#define FB_TYPE_VIRTUAL_BUFFER 5 /* Virtual Buffer */
#define FB_VISUAL_MONO01 0 /* Monochr. 1=Black 0=White */
#define FB_VISUAL_MONO10 1 /* Monochr. 1=White 0=Black */
#define FB_VISUAL_TRUECOLOR 2 /* True color */
#define FB_VISUAL_PSEUDOCOLOR 3 /* Pseudo color (like atari) */
#define FB_VISUAL_DIRECTCOLOR 4 /* Direct color */
#define FB_VISUAL_STATIC_PSEUDOCOLOR 5 /* Pseudo color readonly */
#define FB_ACCEL_NONE 0 /* no hardware accelerator */
/* no dependency on any other header file */
typedef unsigned long __u32;
typedef unsigned short __u16;
struct fb_screeninfo {
__u32 xres; /* visible resolution */
__u32 yres;
__u32 bits_per_pixel; /* guess what */
__u32 line_length; /* number of chars per line */
volatile char *smem_start; /* Start of frame buffer mem */
/* (physical address) */
__u32 smem_len; /* Length of frame buffer mem */
__u32 type; /* see FB_TYPE_* */
__u32 visual; /* see FB_VISUAL_* */
};
struct fb_cmap {
__u32 start; /* First entry */
__u32 len; /* Number of entries */
__u16 *red; /* Red values */
__u16 *green;
__u16 *blue;
__u16 *transp; /* transparency, can be NULL */
};
/* type of function to be executed at the driver level */
#define FB_FUNC_ENTER_GRAPHICS 0
#define FB_FUNC_EXIT_GRAPHICS 1
#define FB_FUNC_IS_DIRTY 2
#define FB_FUNC_GET_MODE 3
struct fb_exec_function
{
int func_no;
void *param;
};
/* Micro Framebuffer API Wrapper */
/*
* This function returns the information regarding the display.
* It is called just after the driver be opened to get all needed
* information about the driver. No change in the mode of operation
* of the driver is done with this call.
*/
extern int ufb_get_screen_info( int fd, struct fb_screeninfo *info );
/*
* Returns the mode of the graphics subsystem
*/
extern int ufb_get_mode( int fd, int *mode );
/*
* Returns the current collor pallete
*/
extern int ufb_get_palette( int fd, struct fb_cmap *color );
/*
* Set the current collor pallete
*/
extern int ufb_set_palette( int fd, struct fb_cmap *color );
/*
* Does all necessary initialization to put the device in
* graphics mode
*/
extern int ufb_enter_graphics( int fd, int mode );
/*
* Switch the device back to the default mode of operation.
* In most cases it put the device back to plain text mode.
*/
extern int ufb_exit_graphics( int fd );
/*
* Tell the driver that the "virtual buffer" is dirty, and an update
* of it to the real device, maybe a serial/parallel LCD or whatever
* is required
*/
extern int ufb_buffer_is_dirty( int fd );
/*
* This function maps the physical ( kernel mode ) address of the framebuffer device
* and maps it to the user space address.
*/
int ufb_mmap_to_user_space( int fd, void **fb_addr, void *physical_addr, unsigned long size );
/*
* This function unmaps memory of the FB from the user's space
*/
int ufb_unmmap_from_user_space( int fd, void *addr );
#ifdef __cplusplus
}
#endif
#endif /* _MW_FB_H */
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