#ifndef _VIDEO_FBCON_H
#define _VIDEO_FBCON_H
-#include <linux/config.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 display {
- /* Filled in by the frame buffer device */
- u_short inverse; /* != 0 text black on white as default */
/* Filled in by the low-level console driver */
- u_char *fontdata;
+ const u_char *fontdata;
int userfont; /* != 0 if fontdata kmalloc()ed */
u_short scrollmode; /* Scroll Method */
+ 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;
+ struct fb_videomode *mode;
};
-/* drivers/video/console/fbcon.c */
-extern char con2fb_map[MAX_NR_CONSOLES];
-extern int set_con2fb_map(int unit, int newidx);
-
+struct fbcon_ops {
+ void (*bmove)(struct vc_data *vc, struct fb_info *info, int sy,
+ int sx, int dy, int dx, int height, int width);
+ 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 bottom_only);
+ void (*cursor)(struct vc_data *vc, struct fb_info *info, int mode,
+ int softback_lines, 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 display *p;
+ int currcon; /* Current VC. */
+ int cursor_flash;
+ int cursor_reset;
+ int blank_state;
+ int graphics;
+ 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
*/
/* Monochrome */
#define attr_bold(s) \
((s) & 0x200)
-#define attr_reverse(s, inverse) \
- (((s) & 0x800) ^ (inverse ? 0x800 : 0))
+#define attr_reverse(s) \
+ ((s) & 0x800)
#define attr_underline(s) \
((s) & 0x400)
#define attr_blink(s) \
((s) & 0x8000)
+/* Font */
+#define REFCOUNT(fd) (((int *)(fd))[-1])
+#define FNTSIZE(fd) (((int *)(fd))[-2])
+#define FNTCHARCNT(fd) (((int *)(fd))[-3])
+#define FNTSUM(fd) (((int *)(fd))[-4])
+#define FONT_EXTRA_WORDS 4
+
/*
* Scroll Method
*/
-/* Internal flags */
-#define __SCROLL_YPAN 0x001
-#define __SCROLL_YWRAP 0x002
-#define __SCROLL_YMOVE 0x003
-#define __SCROLL_YREDRAW 0x004
-#define __SCROLL_YMASK 0x00f
-#define __SCROLL_YFIXED 0x010
-#define __SCROLL_YNOMOVE 0x020
-#define __SCROLL_YPANREDRAW 0x040
-#define __SCROLL_YNOPARTIAL 0x080
-
-/* Only these should be used by the drivers */
-/* Which one should you use? If you have a fast card and slow bus,
- then probably just 0 to indicate fbcon should choose between
- YWRAP/YPAN+MOVE/YMOVE. On the other side, if you have a fast bus
- and even better if your card can do fonting (1->8/32bit painting),
- you should consider either SCROLL_YREDRAW (if your card is
- able to do neither YPAN/YWRAP), or SCROLL_YNOMOVE.
- The best is to test it with some real life scrolling (usually, not
- all lines on the screen are filled completely with non-space characters,
- and REDRAW performs much better on such lines, so don't cat a file
- with every line covering all screen columns, it would not be the right
- benchmark).
+/* There are several methods fbcon can use to move text around the screen:
+ *
+ * Operation Pan Wrap
+ *---------------------------------------------
+ * SCROLL_MOVE copyarea No No
+ * SCROLL_PAN_MOVE copyarea Yes No
+ * SCROLL_WRAP_MOVE copyarea No Yes
+ * SCROLL_REDRAW imageblit No No
+ * SCROLL_PAN_REDRAW imageblit Yes No
+ * SCROLL_WRAP_REDRAW imageblit No Yes
+ *
+ * (SCROLL_WRAP_REDRAW is not implemented yet)
+ *
+ * In general, fbcon will choose the best scrolling
+ * method based on the rule below:
+ *
+ * Pan/Wrap > accel imageblit > accel copyarea >
+ * soft imageblit > (soft copyarea)
+ *
+ * Exception to the rule: Pan + accel copyarea is
+ * preferred over Pan + accel imageblit.
+ *
+ * The above is typical for PCI/AGP cards. Unless
+ * overridden, fbcon will never use soft copyarea.
+ *
+ * If you need to override the above rule, set the
+ * appropriate flags in fb_info->flags. For example,
+ * to prefer copyarea over imageblit, set
+ * FBINFO_READS_FAST.
+ *
+ * Other notes:
+ * + use the hardware engine to move the text
+ * (hw-accelerated copyarea() and fillrect())
+ * + use hardware-supported panning on a large virtual screen
+ * + amifb can not only pan, but also wrap the display by N lines
+ * (i.e. visible line i = physical line (i+N) % yres).
+ * + read what's already rendered on the screen and
+ * write it in a different place (this is cfb_copyarea())
+ * + re-render the text to the screen
+ *
+ * Whether to use wrapping or panning can only be figured out at
+ * runtime (when we know whether our font height is a multiple
+ * of the pan/wrap step)
+ *
*/
-#define SCROLL_YREDRAW (__SCROLL_YFIXED|__SCROLL_YREDRAW)
-#define SCROLL_YNOMOVE (__SCROLL_YNOMOVE|__SCROLL_YPANREDRAW)
-/* SCROLL_YNOPARTIAL, used in combination with the above, is for video
- cards which can not handle using panning to scroll a portion of the
- screen without excessive flicker. Panning will only be used for
- whole screens.
- */
-/* Namespace consistency */
-#define SCROLL_YNOPARTIAL __SCROLL_YNOPARTIAL
+#define SCROLL_MOVE 0x001
+#define SCROLL_PAN_MOVE 0x002
+#define SCROLL_WRAP_MOVE 0x003
+#define SCROLL_REDRAW 0x004
+#define SCROLL_PAN_REDRAW 0x005
+
+#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);
+extern struct class *fb_class;
+
+#define FBCON_ATTRIBUTE_UNDERLINE 1
+#define FBCON_ATTRIBUTE_REVERSE 2
+#define FBCON_ATTRIBUTE_BOLD 4
+
+static inline int real_y(struct display *p, int ypos)
+{
+ int rows = p->vrows;
+
+ ypos += p->yscroll;
+ return ypos < rows ? ypos : ypos - rows;
+}
-extern int fb_console_init(void);
+
+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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