Contributors: 13
Author Tokens Token Proportion Commits Commit Proportion
Linus Torvalds 334 39.90% 2 10.53%
Antonino A. Daplas 242 28.91% 5 26.32%
Thomas Pfaff 172 20.55% 1 5.26%
Harvey Harrison 57 6.81% 1 5.26%
Dave Jones 7 0.84% 1 5.26%
Kees Cook 5 0.60% 1 5.26%
Jesse Barnes 4 0.48% 1 5.26%
Jan Beulich 3 0.36% 2 10.53%
Scot Doyle 3 0.36% 1 5.26%
Daniel Vetter 3 0.36% 1 5.26%
David Winn 3 0.36% 1 5.26%
David Lechner 3 0.36% 1 5.26%
Geert Uytterhoeven 1 0.12% 1 5.26%
Total 837 19 


/*
 *  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 */