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/**************************************************************
*
* Creation Date: <1999-12-31 20:32:35 samuel>
* Time-stamp: <2000/12/31 04:15:36 samuel>
*
* <video_module.h>
*
* Video module interface
*
* Copyright (C) 1999, 2000 Samuel Rydh
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation;
*
**************************************************************/
#ifndef _H_VIDEO_MODULE
#define _H_VIDEO_MODULE
struct video_module;
struct video_desc;
typedef void (*setcmap_fp)( char *cmap );
typedef int (*vopen_fp)( struct video_desc *vmode);
typedef void (*vclose_fp)( void );
typedef void (*vrefresh_fp)( void );
typedef int (*vinit_fp)( struct video_module *m );
typedef void (*vcleanup_fp)( struct video_module *m );
typedef struct video_module
{
const char *name;
vinit_fp vinit;
vcleanup_fp vcleanup;
vopen_fp vopen;
vclose_fp vclose;
vrefresh_fp vrefresh;
setcmap_fp setcmap;
struct video_desc *modes; /* modes supported by this driver */
struct video_module *next;
} video_module_t;
typedef struct video_desc {
int offs; /* offs to actual fb data (from page boundary) */
int rowbytes;
int w; /* width */
int h; /* height */
int depth;
int refresh; /* Hz * 65536 (for verbose information only) */
void *module_data; /* private field (fbdev info for instance) */
/* fields to be filled in by vopen */
char *lvbase; /* page-aligned linux address of mapping */
ulong map_base; /* mapping address to be used instead of lvbase if nonzero */
int mmu_flags; /* "special" MMU options (for acceleration etc) */
/* next supported video mode */
struct video_desc *next; /* next */
} video_desc_t;
extern void video_module_become( video_module_t *m );
extern int video_module_yield( video_module_t *yielder, int may_fail );
extern char *get_vmode_str( video_desc_t *vm, char *buf, int size );
static inline int
std_depth( int depth ) {
switch( depth ){
case 16:
return 15;
case 24:
return 32; }
return depth;
}
#define FBBUF_SIZE( vm ) \
(((vm)->rowbytes * (vm)->h + (vm)->offs + 0xfff) & ~0xfff)
#endif /* _H_VIDEO */
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