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/*
* linux/drivers/video/console/fbcon.h -- Low level frame buffer based console driver
*
* Copyright (C) 1997 Geert Uytterhoeven
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
#ifndef _VIDEO_FBCON_H
#define _VIDEO_FBCON_H
#include <linux/types.h>
#include <linux/vt_buffer.h>
#include <linux/vt_kern.h>
#include <asm/io.h>
#define FBCON_FLAGS_INIT 1
#define FBCON_FLAGS_CURSOR_TIMER 2
/*
* This is the interface between the low-level console driver and the
* low-level frame buffer device
*/
struct fbcon_display {
/* Filled in by the low-level console driver */
const u_char *fontdata;
int userfont; /* != 0 if fontdata kmalloc()ed */
u_short inverse; /* != 0 text black on white as default */
short yscroll; /* Hardware scrolling */
int vrows; /* number of virtual rows */
int cursor_shape;
int con_rotate;
u32 xres_virtual;
u32 yres_virtual;
u32 height;
u32 width;
u32 bits_per_pixel;
u32 grayscale;
u32 nonstd;
u32 accel_flags;
u32 rotate;
struct fb_bitfield red;
struct fb_bitfield green;
struct fb_bitfield blue;
struct fb_bitfield transp;
const struct fb_videomode *mode;
};
struct fbcon_ops {
void (*clear)(struct vc_data *vc, struct fb_info *info, int sy,
int sx, int height, int width);
void (*putcs)(struct vc_data *vc, struct fb_info *info,
const unsigned short *s, int count, int yy, int xx,
int fg, int bg);
void (*clear_margins)(struct vc_data *vc, struct fb_info *info,
int color, int bottom_only);
void (*cursor)(struct vc_data *vc, struct fb_info *info, int mode,
int fg, int bg);
int (*update_start)(struct fb_info *info);
int (*rotate_font)(struct fb_info *info, struct vc_data *vc);
struct fb_var_screeninfo var; /* copy of the current fb_var_screeninfo */
struct timer_list cursor_timer; /* Cursor timer */
struct fb_cursor cursor_state;
struct fbcon_display *p;
struct fb_info *info;
int currcon; /* Current VC. */
int cur_blink_jiffies;
int cursor_flash;
int cursor_reset;
int blank_state;
int graphics;
int save_graphics; /* for debug enter/leave */
int flags;
int rotate;
int cur_rotate;
char *cursor_data;
u8 *fontbuffer;
u8 *fontdata;
u8 *cursor_src;
u32 cursor_size;
u32 fd_size;
};
/*
* Attribute Decoding
*/
/* Color */
#define attr_fgcol(fgshift,s) \
(((s) >> (fgshift)) & 0x0f)
#define attr_bgcol(bgshift,s) \
(((s) >> (bgshift)) & 0x0f)
/* Monochrome */
#define attr_bold(s) \
((s) & 0x200)
#define attr_reverse(s) \
((s) & 0x800)
#define attr_underline(s) \
((s) & 0x400)
#define attr_blink(s) \
((s) & 0x8000)
static inline int mono_col(const struct fb_info *info)
{
__u32 max_len;
max_len = max(info->var.green.length, info->var.red.length);
max_len = max(info->var.blue.length, max_len);
return (~(0xfff << max_len)) & 0xff;
}
static inline int attr_col_ec(int shift, struct vc_data *vc,
struct fb_info *info, int is_fg)
{
int is_mono01;
int col;
int fg;
int bg;
if (!vc)
return 0;
if (vc->vc_can_do_color)
return is_fg ? attr_fgcol(shift,vc->vc_video_erase_char)
: attr_bgcol(shift,vc->vc_video_erase_char);
if (!info)
return 0;
col = mono_col(info);
is_mono01 = info->fix.visual == FB_VISUAL_MONO01;
if (attr_reverse(vc->vc_video_erase_char)) {
fg = is_mono01 ? col : 0;
bg = is_mono01 ? 0 : col;
}
else {
fg = is_mono01 ? 0 : col;
bg = is_mono01 ? col : 0;
}
return is_fg ? fg : bg;
}
#define attr_bgcol_ec(bgshift, vc, info) attr_col_ec(bgshift, vc, info, 0)
#define attr_fgcol_ec(fgshift, vc, info) attr_col_ec(fgshift, vc, info, 1)
#ifdef CONFIG_FB_TILEBLITTING
extern void fbcon_set_tileops(struct vc_data *vc, struct fb_info *info);
#endif
extern void fbcon_set_bitops(struct fbcon_ops *ops);
extern int soft_cursor(struct fb_info *info, struct fb_cursor *cursor);
#define FBCON_ATTRIBUTE_UNDERLINE 1
#define FBCON_ATTRIBUTE_REVERSE 2
#define FBCON_ATTRIBUTE_BOLD 4
static inline int real_y(struct fbcon_display *p, int ypos)
{
int rows = p->vrows;
ypos += p->yscroll;
return ypos < rows ? ypos : ypos - rows;
}
static inline int get_attribute(struct fb_info *info, u16 c)
{
int attribute = 0;
if (fb_get_color_depth(&info->var, &info->fix) == 1) {
if (attr_underline(c))
attribute |= FBCON_ATTRIBUTE_UNDERLINE;
if (attr_reverse(c))
attribute |= FBCON_ATTRIBUTE_REVERSE;
if (attr_bold(c))
attribute |= FBCON_ATTRIBUTE_BOLD;
}
return attribute;
}
#define FBCON_SWAP(i,r,v) ({ \
typeof(r) _r = (r); \
typeof(v) _v = (v); \
(void) (&_r == &_v); \
(i == FB_ROTATE_UR || i == FB_ROTATE_UD) ? _r : _v; })
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
extern void fbcon_set_rotate(struct fbcon_ops *ops);
#else
#define fbcon_set_rotate(x) do {} while(0)
#endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
#endif /* _VIDEO_FBCON_H */
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