2 * linux/drivers/video/fbcon.c -- Low level frame buffer based console driver
4 * Copyright (C) 1995 Geert Uytterhoeven
7 * This file is based on the original Amiga console driver (amicon.c):
9 * Copyright (C) 1993 Hamish Macdonald
11 * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
13 * with work by William Rucklidge (wjr@cs.cornell.edu)
15 * Jes Sorensen (jds@kom.auc.dk)
18 * and on the original Atari console driver (atacon.c):
20 * Copyright (C) 1993 Bjoern Brauel
23 * with work by Guenther Kelleter
27 * Hardware cursor support added by Emmanuel Marty (core@ggi-project.org)
28 * Smart redraw scrolling, arbitrary font width support, 512char font support
29 * and software scrollback added by
30 * Jakub Jelinek (jj@ultra.linux.cz)
32 * Random hacking by Martin Mares <mj@ucw.cz>
34 * 2001 - Documented with DocBook
35 * - Brad Douglas <brad@neruo.com>
37 * The low level operations for the various display memory organizations are
38 * now in separate source files.
40 * Currently the following organizations are supported:
42 * o afb Amiga bitplanes
43 * o cfb{2,4,8,16,24,32} Packed pixels
44 * o ilbm Amiga interleaved bitplanes
45 * o iplan2p[248] Atari interleaved bitplanes
47 * o vga VGA characters/attributes
51 * - Implement 16 plane mode (iplan2p16)
54 * This file is subject to the terms and conditions of the GNU General Public
55 * License. See the file COPYING in the main directory of this archive for
61 #include <linux/module.h>
62 #include <linux/types.h>
64 #include <linux/kernel.h>
65 #include <linux/delay.h> /* MSch: for IRQ probe */
66 #include <linux/console.h>
67 #include <linux/string.h>
69 #include <linux/slab.h>
71 #include <linux/vt_kern.h>
72 #include <linux/selection.h>
73 #include <linux/font.h>
74 #include <linux/smp.h>
75 #include <linux/init.h>
76 #include <linux/interrupt.h>
77 #include <linux/crc32.h> /* For counting font checksums */
80 #include <asm/system.h>
85 # define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__ , ## args)
87 # define DPRINTK(fmt, args...)
91 FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
92 FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
93 FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
96 static struct display fb_display[MAX_NR_CONSOLES];
98 static signed char con2fb_map[MAX_NR_CONSOLES];
99 static signed char con2fb_map_boot[MAX_NR_CONSOLES];
101 static int logo_lines;
102 /* logo_shown is an index to vc_cons when >= 0; otherwise follows FBCON_LOGO
104 static int logo_shown = FBCON_LOGO_CANSHOW;
105 /* Software scrollback */
106 static int fbcon_softback_size = 32768;
107 static unsigned long softback_buf, softback_curr;
108 static unsigned long softback_in;
109 static unsigned long softback_top, softback_end;
110 static int softback_lines;
111 /* console mappings */
112 static int first_fb_vc;
113 static int last_fb_vc = MAX_NR_CONSOLES - 1;
114 static int fbcon_is_default = 1;
115 static int fbcon_has_exited;
116 static int primary_device = -1;
117 static int fbcon_has_console_bind;
119 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
120 static int map_override;
122 static inline void fbcon_map_override(void)
127 static inline void fbcon_map_override(void)
130 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY */
133 static char fontname[40];
135 /* current fb_info */
136 static int info_idx = -1;
138 /* console rotation */
139 static int initial_rotation;
140 static int fbcon_has_sysfs;
142 static const struct consw fb_con;
144 #define CM_SOFTBACK (8)
146 #define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
148 static int fbcon_set_origin(struct vc_data *);
150 #define CURSOR_DRAW_DELAY (1)
152 static int vbl_cursor_cnt;
153 static int fbcon_cursor_noblink;
155 #define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
158 * Interface used by the world
161 static const char *fbcon_startup(void);
162 static void fbcon_init(struct vc_data *vc, int init);
163 static void fbcon_deinit(struct vc_data *vc);
164 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
166 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos);
167 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
168 int count, int ypos, int xpos);
169 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only);
170 static void fbcon_cursor(struct vc_data *vc, int mode);
171 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
173 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
174 int height, int width);
175 static int fbcon_switch(struct vc_data *vc);
176 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch);
177 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table);
178 static int fbcon_scrolldelta(struct vc_data *vc, int lines);
183 static __inline__ void ywrap_up(struct vc_data *vc, int count);
184 static __inline__ void ywrap_down(struct vc_data *vc, int count);
185 static __inline__ void ypan_up(struct vc_data *vc, int count);
186 static __inline__ void ypan_down(struct vc_data *vc, int count);
187 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
188 int dy, int dx, int height, int width, u_int y_break);
189 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
191 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
192 int line, int count, int dy);
193 static void fbcon_modechanged(struct fb_info *info);
194 static void fbcon_set_all_vcs(struct fb_info *info);
195 static void fbcon_start(void);
196 static void fbcon_exit(void);
197 static struct device *fbcon_device;
199 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_ROTATION
200 static inline void fbcon_set_rotation(struct fb_info *info)
202 struct fbcon_ops *ops = info->fbcon_par;
204 if (!(info->flags & FBINFO_MISC_TILEBLITTING) &&
205 ops->p->con_rotate < 4)
206 ops->rotate = ops->p->con_rotate;
211 static void fbcon_rotate(struct fb_info *info, u32 rotate)
213 struct fbcon_ops *ops= info->fbcon_par;
214 struct fb_info *fb_info;
216 if (!ops || ops->currcon == -1)
219 fb_info = registered_fb[con2fb_map[ops->currcon]];
221 if (info == fb_info) {
222 struct display *p = &fb_display[ops->currcon];
225 p->con_rotate = rotate;
229 fbcon_modechanged(info);
233 static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
235 struct fbcon_ops *ops = info->fbcon_par;
240 if (!ops || ops->currcon < 0 || rotate > 3)
243 for (i = first_fb_vc; i <= last_fb_vc; i++) {
245 if (!vc || vc->vc_mode != KD_TEXT ||
246 registered_fb[con2fb_map[i]] != info)
249 p = &fb_display[vc->vc_num];
250 p->con_rotate = rotate;
253 fbcon_set_all_vcs(info);
256 static inline void fbcon_set_rotation(struct fb_info *info)
258 struct fbcon_ops *ops = info->fbcon_par;
260 ops->rotate = FB_ROTATE_UR;
263 static void fbcon_rotate(struct fb_info *info, u32 rotate)
268 static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
272 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
274 static int fbcon_get_rotate(struct fb_info *info)
276 struct fbcon_ops *ops = info->fbcon_par;
278 return (ops) ? ops->rotate : 0;
281 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
283 struct fbcon_ops *ops = info->fbcon_par;
285 return (info->state != FBINFO_STATE_RUNNING ||
286 vc->vc_mode != KD_TEXT || ops->graphics);
289 static inline int get_color(struct vc_data *vc, struct fb_info *info,
292 int depth = fb_get_color_depth(&info->var, &info->fix);
295 if (console_blanked) {
296 unsigned short charmask = vc->vc_hi_font_mask ? 0x1ff : 0xff;
298 c = vc->vc_video_erase_char & charmask;
302 color = (is_fg) ? attr_fgcol((vc->vc_hi_font_mask) ? 9 : 8, c)
303 : attr_bgcol((vc->vc_hi_font_mask) ? 13 : 12, c);
308 int col = mono_col(info);
310 int fg = (info->fix.visual != FB_VISUAL_MONO01) ? col : 0;
311 int bg = (info->fix.visual != FB_VISUAL_MONO01) ? 0 : col;
316 color = (is_fg) ? fg : bg;
321 * Scale down 16-colors to 4 colors. Default 4-color palette
322 * is grayscale. However, simply dividing the values by 4
323 * will not work, as colors 1, 2 and 3 will be scaled-down
324 * to zero rendering them invisible. So empirically convert
325 * colors to a sane 4-level grayscale.
329 color = 0; /* black */
332 color = 2; /* white */
335 color = 1; /* gray */
338 color = 3; /* intense white */
344 * Last 8 entries of default 16-color palette is a more intense
345 * version of the first 8 (i.e., same chrominance, different
356 static void fbcon_update_softback(struct vc_data *vc)
358 int l = fbcon_softback_size / vc->vc_size_row;
361 softback_end = softback_buf + l * vc->vc_size_row;
363 /* Smaller scrollback makes no sense, and 0 would screw
364 the operation totally */
368 static void fb_flashcursor(struct work_struct *work)
370 struct fb_info *info = container_of(work, struct fb_info, queue);
371 struct fbcon_ops *ops = info->fbcon_par;
373 struct vc_data *vc = NULL;
377 acquire_console_sem();
378 if (ops && ops->currcon != -1)
379 vc = vc_cons[ops->currcon].d;
381 if (!vc || !CON_IS_VISIBLE(vc) ||
382 registered_fb[con2fb_map[vc->vc_num]] != info ||
384 release_console_sem();
388 p = &fb_display[vc->vc_num];
389 c = scr_readw((u16 *) vc->vc_pos);
390 mode = (!ops->cursor_flash || ops->cursor_state.enable) ?
392 ops->cursor(vc, info, mode, softback_lines, get_color(vc, info, c, 1),
393 get_color(vc, info, c, 0));
394 release_console_sem();
397 static void cursor_timer_handler(unsigned long dev_addr)
399 struct fb_info *info = (struct fb_info *) dev_addr;
400 struct fbcon_ops *ops = info->fbcon_par;
402 schedule_work(&info->queue);
403 mod_timer(&ops->cursor_timer, jiffies + HZ/5);
406 static void fbcon_add_cursor_timer(struct fb_info *info)
408 struct fbcon_ops *ops = info->fbcon_par;
410 if ((!info->queue.func || info->queue.func == fb_flashcursor) &&
411 !(ops->flags & FBCON_FLAGS_CURSOR_TIMER) &&
412 !fbcon_cursor_noblink) {
413 if (!info->queue.func)
414 INIT_WORK(&info->queue, fb_flashcursor);
416 init_timer(&ops->cursor_timer);
417 ops->cursor_timer.function = cursor_timer_handler;
418 ops->cursor_timer.expires = jiffies + HZ / 5;
419 ops->cursor_timer.data = (unsigned long ) info;
420 add_timer(&ops->cursor_timer);
421 ops->flags |= FBCON_FLAGS_CURSOR_TIMER;
425 static void fbcon_del_cursor_timer(struct fb_info *info)
427 struct fbcon_ops *ops = info->fbcon_par;
429 if (info->queue.func == fb_flashcursor &&
430 ops->flags & FBCON_FLAGS_CURSOR_TIMER) {
431 del_timer_sync(&ops->cursor_timer);
432 ops->flags &= ~FBCON_FLAGS_CURSOR_TIMER;
437 static int __init fb_console_setup(char *this_opt)
442 if (!this_opt || !*this_opt)
445 while ((options = strsep(&this_opt, ",")) != NULL) {
446 if (!strncmp(options, "font:", 5))
447 strcpy(fontname, options + 5);
449 if (!strncmp(options, "scrollback:", 11)) {
452 fbcon_softback_size = simple_strtoul(options, &options, 0);
453 if (*options == 'k' || *options == 'K') {
454 fbcon_softback_size *= 1024;
464 if (!strncmp(options, "map:", 4)) {
467 for (i = 0, j = 0; i < MAX_NR_CONSOLES; i++) {
471 (options[j++]-'0') % FB_MAX;
474 fbcon_map_override();
480 if (!strncmp(options, "vc:", 3)) {
483 first_fb_vc = simple_strtoul(options, &options, 10) - 1;
486 if (*options++ == '-')
487 last_fb_vc = simple_strtoul(options, &options, 10) - 1;
488 fbcon_is_default = 0;
491 if (!strncmp(options, "rotate:", 7)) {
494 initial_rotation = simple_strtoul(options, &options, 0);
495 if (initial_rotation > 3)
496 initial_rotation = 0;
502 __setup("fbcon=", fb_console_setup);
505 static int search_fb_in_map(int idx)
509 for (i = first_fb_vc; i <= last_fb_vc; i++) {
510 if (con2fb_map[i] == idx)
516 static int search_for_mapped_con(void)
520 for (i = first_fb_vc; i <= last_fb_vc; i++) {
521 if (con2fb_map[i] != -1)
527 static int fbcon_takeover(int show_logo)
531 if (!num_registered_fb)
535 logo_shown = FBCON_LOGO_DONTSHOW;
537 for (i = first_fb_vc; i <= last_fb_vc; i++)
538 con2fb_map[i] = info_idx;
540 err = take_over_console(&fb_con, first_fb_vc, last_fb_vc,
544 for (i = first_fb_vc; i <= last_fb_vc; i++) {
549 fbcon_has_console_bind = 1;
556 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
557 int cols, int rows, int new_cols, int new_rows)
559 logo_shown = FBCON_LOGO_DONTSHOW;
562 static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info,
563 int cols, int rows, int new_cols, int new_rows)
565 /* Need to make room for the logo */
566 struct fbcon_ops *ops = info->fbcon_par;
567 int cnt, erase = vc->vc_video_erase_char, step;
568 unsigned short *save = NULL, *r, *q;
571 if (info->flags & FBINFO_MODULE) {
572 logo_shown = FBCON_LOGO_DONTSHOW;
577 * remove underline attribute from erase character
578 * if black and white framebuffer.
580 if (fb_get_color_depth(&info->var, &info->fix) == 1)
582 logo_height = fb_prepare_logo(info, ops->rotate);
583 logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);
584 q = (unsigned short *) (vc->vc_origin +
585 vc->vc_size_row * rows);
586 step = logo_lines * cols;
587 for (r = q - logo_lines * cols; r < q; r++)
588 if (scr_readw(r) != vc->vc_video_erase_char)
590 if (r != q && new_rows >= rows + logo_lines) {
591 save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL);
593 int i = cols < new_cols ? cols : new_cols;
594 scr_memsetw(save, erase, logo_lines * new_cols * 2);
596 for (cnt = 0; cnt < logo_lines; cnt++, r += i)
597 scr_memcpyw(save + cnt * new_cols, r, 2 * i);
602 /* We can scroll screen down */
604 for (cnt = rows - logo_lines; cnt > 0; cnt--) {
605 scr_memcpyw(r + step, r, vc->vc_size_row);
610 if (vc->vc_y + logo_lines >= rows)
611 lines = rows - vc->vc_y - 1;
615 vc->vc_pos += lines * vc->vc_size_row;
618 scr_memsetw((unsigned short *) vc->vc_origin,
620 vc->vc_size_row * logo_lines);
622 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
623 fbcon_clear_margins(vc, 0);
628 q = (unsigned short *) (vc->vc_origin +
631 scr_memcpyw(q, save, logo_lines * new_cols * 2);
632 vc->vc_y += logo_lines;
633 vc->vc_pos += logo_lines * vc->vc_size_row;
637 if (logo_lines > vc->vc_bottom) {
638 logo_shown = FBCON_LOGO_CANSHOW;
640 "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
641 } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
642 logo_shown = FBCON_LOGO_DRAW;
643 vc->vc_top = logo_lines;
648 #ifdef CONFIG_FB_TILEBLITTING
649 static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
651 struct fbcon_ops *ops = info->fbcon_par;
653 ops->p = &fb_display[vc->vc_num];
655 if ((info->flags & FBINFO_MISC_TILEBLITTING))
656 fbcon_set_tileops(vc, info);
658 fbcon_set_rotation(info);
659 fbcon_set_bitops(ops);
663 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
667 if (info->flags & FBINFO_MISC_TILEBLITTING &&
668 info->tileops->fb_get_tilemax(info) < charcount)
674 static void set_blitting_type(struct vc_data *vc, struct fb_info *info)
676 struct fbcon_ops *ops = info->fbcon_par;
678 info->flags &= ~FBINFO_MISC_TILEBLITTING;
679 ops->p = &fb_display[vc->vc_num];
680 fbcon_set_rotation(info);
681 fbcon_set_bitops(ops);
684 static int fbcon_invalid_charcount(struct fb_info *info, unsigned charcount)
689 #endif /* CONFIG_MISC_TILEBLITTING */
692 static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
693 int unit, int oldidx)
695 struct fbcon_ops *ops = NULL;
698 if (!try_module_get(info->fbops->owner))
701 if (!err && info->fbops->fb_open &&
702 info->fbops->fb_open(info, 0))
706 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
712 info->fbcon_par = ops;
715 set_blitting_type(vc, info);
719 con2fb_map[unit] = oldidx;
720 module_put(info->fbops->owner);
726 static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo,
727 struct fb_info *newinfo, int unit,
728 int oldidx, int found)
730 struct fbcon_ops *ops = oldinfo->fbcon_par;
733 if (oldinfo->fbops->fb_release &&
734 oldinfo->fbops->fb_release(oldinfo, 0)) {
735 con2fb_map[unit] = oldidx;
736 if (!found && newinfo->fbops->fb_release)
737 newinfo->fbops->fb_release(newinfo, 0);
739 module_put(newinfo->fbops->owner);
744 fbcon_del_cursor_timer(oldinfo);
745 kfree(ops->cursor_state.mask);
746 kfree(ops->cursor_data);
747 kfree(ops->fontbuffer);
748 kfree(oldinfo->fbcon_par);
749 oldinfo->fbcon_par = NULL;
750 module_put(oldinfo->fbops->owner);
752 If oldinfo and newinfo are driving the same hardware,
753 the fb_release() method of oldinfo may attempt to
754 restore the hardware state. This will leave the
755 newinfo in an undefined state. Thus, a call to
756 fb_set_par() may be needed for the newinfo.
758 if (newinfo->fbops->fb_set_par) {
759 ret = newinfo->fbops->fb_set_par(newinfo);
762 printk(KERN_ERR "con2fb_release_oldinfo: "
763 "detected unhandled fb_set_par error, "
764 "error code %d\n", ret);
771 static void con2fb_init_display(struct vc_data *vc, struct fb_info *info,
772 int unit, int show_logo)
774 struct fbcon_ops *ops = info->fbcon_par;
777 ops->currcon = fg_console;
779 if (info->fbops->fb_set_par && !(ops->flags & FBCON_FLAGS_INIT)) {
780 ret = info->fbops->fb_set_par(info);
783 printk(KERN_ERR "con2fb_init_display: detected "
784 "unhandled fb_set_par error, "
785 "error code %d\n", ret);
788 ops->flags |= FBCON_FLAGS_INIT;
790 fbcon_set_disp(info, &info->var, unit);
793 struct vc_data *fg_vc = vc_cons[fg_console].d;
794 struct fb_info *fg_info =
795 registered_fb[con2fb_map[fg_console]];
797 fbcon_prepare_logo(fg_vc, fg_info, fg_vc->vc_cols,
798 fg_vc->vc_rows, fg_vc->vc_cols,
802 update_screen(vc_cons[fg_console].d);
806 * set_con2fb_map - map console to frame buffer device
807 * @unit: virtual console number to map
808 * @newidx: frame buffer index to map virtual console to
809 * @user: user request
811 * Maps a virtual console @unit to a frame buffer device
814 static int set_con2fb_map(int unit, int newidx, int user)
816 struct vc_data *vc = vc_cons[unit].d;
817 int oldidx = con2fb_map[unit];
818 struct fb_info *info = registered_fb[newidx];
819 struct fb_info *oldinfo = NULL;
822 if (oldidx == newidx)
825 if (!info || fbcon_has_exited)
828 if (!err && !search_for_mapped_con()) {
830 return fbcon_takeover(0);
834 oldinfo = registered_fb[oldidx];
836 found = search_fb_in_map(newidx);
838 acquire_console_sem();
839 con2fb_map[unit] = newidx;
841 err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
845 * If old fb is not mapped to any of the consoles,
846 * fbcon should release it.
848 if (!err && oldinfo && !search_fb_in_map(oldidx))
849 err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
853 int show_logo = (fg_console == 0 && !user &&
854 logo_shown != FBCON_LOGO_DONTSHOW);
857 fbcon_add_cursor_timer(info);
858 con2fb_map_boot[unit] = newidx;
859 con2fb_init_display(vc, info, unit, show_logo);
862 if (!search_fb_in_map(info_idx))
865 release_console_sem();
870 * Low Level Operations
872 /* NOTE: fbcon cannot be __init: it may be called from take_over_console later */
873 static int var_to_display(struct display *disp,
874 struct fb_var_screeninfo *var,
875 struct fb_info *info)
877 disp->xres_virtual = var->xres_virtual;
878 disp->yres_virtual = var->yres_virtual;
879 disp->bits_per_pixel = var->bits_per_pixel;
880 disp->grayscale = var->grayscale;
881 disp->nonstd = var->nonstd;
882 disp->accel_flags = var->accel_flags;
883 disp->height = var->height;
884 disp->width = var->width;
885 disp->red = var->red;
886 disp->green = var->green;
887 disp->blue = var->blue;
888 disp->transp = var->transp;
889 disp->rotate = var->rotate;
890 disp->mode = fb_match_mode(var, &info->modelist);
891 if (disp->mode == NULL)
892 /* This should not happen */
897 static void display_to_var(struct fb_var_screeninfo *var,
898 struct display *disp)
900 fb_videomode_to_var(var, disp->mode);
901 var->xres_virtual = disp->xres_virtual;
902 var->yres_virtual = disp->yres_virtual;
903 var->bits_per_pixel = disp->bits_per_pixel;
904 var->grayscale = disp->grayscale;
905 var->nonstd = disp->nonstd;
906 var->accel_flags = disp->accel_flags;
907 var->height = disp->height;
908 var->width = disp->width;
909 var->red = disp->red;
910 var->green = disp->green;
911 var->blue = disp->blue;
912 var->transp = disp->transp;
913 var->rotate = disp->rotate;
916 static const char *fbcon_startup(void)
918 const char *display_desc = "frame buffer device";
919 struct display *p = &fb_display[fg_console];
920 struct vc_data *vc = vc_cons[fg_console].d;
921 const struct font_desc *font = NULL;
922 struct module *owner;
923 struct fb_info *info = NULL;
924 struct fbcon_ops *ops;
928 * If num_registered_fb is zero, this is a call for the dummy part.
929 * The frame buffer devices weren't initialized yet.
931 if (!num_registered_fb || info_idx == -1)
934 * Instead of blindly using registered_fb[0], we use info_idx, set by
937 info = registered_fb[info_idx];
941 owner = info->fbops->owner;
942 if (!try_module_get(owner))
944 if (info->fbops->fb_open && info->fbops->fb_open(info, 0)) {
949 ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
957 ops->cur_rotate = -1;
958 info->fbcon_par = ops;
959 p->con_rotate = initial_rotation;
960 set_blitting_type(vc, info);
962 if (info->fix.type != FB_TYPE_TEXT) {
963 if (fbcon_softback_size) {
967 kmalloc(fbcon_softback_size,
970 fbcon_softback_size = 0;
976 kfree((void *) softback_buf);
982 softback_in = softback_top = softback_curr =
987 /* Setup default font */
989 if (!fontname[0] || !(font = find_font(fontname)))
990 font = get_default_font(info->var.xres,
993 info->pixmap.blit_y);
994 vc->vc_font.width = font->width;
995 vc->vc_font.height = font->height;
996 vc->vc_font.data = (void *)(p->fontdata = font->data);
997 vc->vc_font.charcount = 256; /* FIXME Need to support more fonts */
1000 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1001 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1002 cols /= vc->vc_font.width;
1003 rows /= vc->vc_font.height;
1004 vc_resize(vc, cols, rows);
1006 DPRINTK("mode: %s\n", info->fix.id);
1007 DPRINTK("visual: %d\n", info->fix.visual);
1008 DPRINTK("res: %dx%d-%d\n", info->var.xres,
1010 info->var.bits_per_pixel);
1012 fbcon_add_cursor_timer(info);
1013 fbcon_has_exited = 0;
1014 return display_desc;
1017 static void fbcon_init(struct vc_data *vc, int init)
1019 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1020 struct fbcon_ops *ops;
1021 struct vc_data **default_mode = vc->vc_display_fg;
1022 struct vc_data *svc = *default_mode;
1023 struct display *t, *p = &fb_display[vc->vc_num];
1024 int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
1027 if (info_idx == -1 || info == NULL)
1032 if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
1033 (info->fix.type == FB_TYPE_TEXT))
1036 if (var_to_display(p, &info->var, info))
1039 if (!info->fbcon_par)
1040 con2fb_acquire_newinfo(vc, info, vc->vc_num, -1);
1042 /* If we are not the first console on this
1043 fb, copy the font from that console */
1044 t = &fb_display[fg_console];
1047 struct vc_data *fvc = vc_cons[fg_console].d;
1049 vc->vc_font.data = (void *)(p->fontdata =
1051 vc->vc_font.width = fvc->vc_font.width;
1052 vc->vc_font.height = fvc->vc_font.height;
1053 p->userfont = t->userfont;
1056 REFCOUNT(p->fontdata)++;
1058 const struct font_desc *font = NULL;
1060 if (!fontname[0] || !(font = find_font(fontname)))
1061 font = get_default_font(info->var.xres,
1063 info->pixmap.blit_x,
1064 info->pixmap.blit_y);
1065 vc->vc_font.width = font->width;
1066 vc->vc_font.height = font->height;
1067 vc->vc_font.data = (void *)(p->fontdata = font->data);
1068 vc->vc_font.charcount = 256; /* FIXME Need to
1069 support more fonts */
1074 charcnt = FNTCHARCNT(p->fontdata);
1076 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1077 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1078 if (charcnt == 256) {
1079 vc->vc_hi_font_mask = 0;
1081 vc->vc_hi_font_mask = 0x100;
1082 if (vc->vc_can_do_color)
1083 vc->vc_complement_mask <<= 1;
1086 if (!*svc->vc_uni_pagedir_loc)
1087 con_set_default_unimap(svc);
1088 if (!*vc->vc_uni_pagedir_loc)
1089 con_copy_unimap(vc, svc);
1091 ops = info->fbcon_par;
1092 p->con_rotate = initial_rotation;
1093 set_blitting_type(vc, info);
1097 new_cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1098 new_rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1099 new_cols /= vc->vc_font.width;
1100 new_rows /= vc->vc_font.height;
1103 * We must always set the mode. The mode of the previous console
1104 * driver could be in the same resolution but we are using different
1105 * hardware so we have to initialize the hardware.
1107 * We need to do it in fbcon_init() to prevent screen corruption.
1109 if (CON_IS_VISIBLE(vc) && vc->vc_mode == KD_TEXT) {
1110 if (info->fbops->fb_set_par &&
1111 !(ops->flags & FBCON_FLAGS_INIT)) {
1112 ret = info->fbops->fb_set_par(info);
1115 printk(KERN_ERR "fbcon_init: detected "
1116 "unhandled fb_set_par error, "
1117 "error code %d\n", ret);
1120 ops->flags |= FBCON_FLAGS_INIT;
1125 if ((cap & FBINFO_HWACCEL_COPYAREA) &&
1126 !(cap & FBINFO_HWACCEL_DISABLED))
1127 p->scrollmode = SCROLL_MOVE;
1128 else /* default to something safe */
1129 p->scrollmode = SCROLL_REDRAW;
1132 * ++guenther: console.c:vc_allocate() relies on initializing
1133 * vc_{cols,rows}, but we must not set those if we are only
1134 * resizing the console.
1137 vc->vc_cols = new_cols;
1138 vc->vc_rows = new_rows;
1140 vc_resize(vc, new_cols, new_rows);
1143 fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
1145 if (vc == svc && softback_buf)
1146 fbcon_update_softback(vc);
1148 if (ops->rotate_font && ops->rotate_font(info, vc)) {
1149 ops->rotate = FB_ROTATE_UR;
1150 set_blitting_type(vc, info);
1153 ops->p = &fb_display[fg_console];
1156 static void fbcon_free_font(struct display *p)
1158 if (p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
1159 kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
1164 static void fbcon_deinit(struct vc_data *vc)
1166 struct display *p = &fb_display[vc->vc_num];
1167 struct fb_info *info;
1168 struct fbcon_ops *ops;
1172 idx = con2fb_map[vc->vc_num];
1177 info = registered_fb[idx];
1182 ops = info->fbcon_par;
1187 if (CON_IS_VISIBLE(vc))
1188 fbcon_del_cursor_timer(info);
1190 ops->flags &= ~FBCON_FLAGS_INIT;
1193 if (!con_is_bound(&fb_con))
1199 /* ====================================================================== */
1201 /* fbcon_XXX routines - interface used by the world
1203 * This system is now divided into two levels because of complications
1204 * caused by hardware scrolling. Top level functions:
1206 * fbcon_bmove(), fbcon_clear(), fbcon_putc(), fbcon_clear_margins()
1208 * handles y values in range [0, scr_height-1] that correspond to real
1209 * screen positions. y_wrap shift means that first line of bitmap may be
1210 * anywhere on this display. These functions convert lineoffsets to
1211 * bitmap offsets and deal with the wrap-around case by splitting blits.
1213 * fbcon_bmove_physical_8() -- These functions fast implementations
1214 * fbcon_clear_physical_8() -- of original fbcon_XXX fns.
1215 * fbcon_putc_physical_8() -- (font width != 8) may be added later
1219 * At the moment fbcon_putc() cannot blit across vertical wrap boundary
1220 * Implies should only really hardware scroll in rows. Only reason for
1221 * restriction is simplicity & efficiency at the moment.
1224 static void fbcon_clear(struct vc_data *vc, int sy, int sx, int height,
1227 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1228 struct fbcon_ops *ops = info->fbcon_par;
1230 struct display *p = &fb_display[vc->vc_num];
1233 if (fbcon_is_inactive(vc, info))
1236 if (!height || !width)
1239 if (sy < vc->vc_top && vc->vc_top == logo_lines)
1242 /* Split blits that cross physical y_wrap boundary */
1244 y_break = p->vrows - p->yscroll;
1245 if (sy < y_break && sy + height - 1 >= y_break) {
1246 u_int b = y_break - sy;
1247 ops->clear(vc, info, real_y(p, sy), sx, b, width);
1248 ops->clear(vc, info, real_y(p, sy + b), sx, height - b,
1251 ops->clear(vc, info, real_y(p, sy), sx, height, width);
1254 static void fbcon_putcs(struct vc_data *vc, const unsigned short *s,
1255 int count, int ypos, int xpos)
1257 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1258 struct display *p = &fb_display[vc->vc_num];
1259 struct fbcon_ops *ops = info->fbcon_par;
1261 if (!fbcon_is_inactive(vc, info))
1262 ops->putcs(vc, info, s, count, real_y(p, ypos), xpos,
1263 get_color(vc, info, scr_readw(s), 1),
1264 get_color(vc, info, scr_readw(s), 0));
1267 static void fbcon_putc(struct vc_data *vc, int c, int ypos, int xpos)
1271 scr_writew(c, &chr);
1272 fbcon_putcs(vc, &chr, 1, ypos, xpos);
1275 static void fbcon_clear_margins(struct vc_data *vc, int bottom_only)
1277 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1278 struct fbcon_ops *ops = info->fbcon_par;
1280 if (!fbcon_is_inactive(vc, info))
1281 ops->clear_margins(vc, info, bottom_only);
1284 static void fbcon_cursor(struct vc_data *vc, int mode)
1286 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1287 struct fbcon_ops *ops = info->fbcon_par;
1289 int c = scr_readw((u16 *) vc->vc_pos);
1291 if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
1294 if (vc->vc_cursor_type & 0x10)
1295 fbcon_del_cursor_timer(info);
1297 fbcon_add_cursor_timer(info);
1299 ops->cursor_flash = (mode == CM_ERASE) ? 0 : 1;
1300 if (mode & CM_SOFTBACK) {
1301 mode &= ~CM_SOFTBACK;
1305 fbcon_set_origin(vc);
1309 ops->cursor(vc, info, mode, y, get_color(vc, info, c, 1),
1310 get_color(vc, info, c, 0));
1311 vbl_cursor_cnt = CURSOR_DRAW_DELAY;
1314 static int scrollback_phys_max = 0;
1315 static int scrollback_max = 0;
1316 static int scrollback_current = 0;
1318 static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
1321 struct display *p, *t;
1322 struct vc_data **default_mode, *vc;
1323 struct vc_data *svc;
1324 struct fbcon_ops *ops = info->fbcon_par;
1325 int rows, cols, charcnt = 256;
1327 p = &fb_display[unit];
1329 if (var_to_display(p, var, info))
1332 vc = vc_cons[unit].d;
1337 default_mode = vc->vc_display_fg;
1338 svc = *default_mode;
1339 t = &fb_display[svc->vc_num];
1341 if (!vc->vc_font.data) {
1342 vc->vc_font.data = (void *)(p->fontdata = t->fontdata);
1343 vc->vc_font.width = (*default_mode)->vc_font.width;
1344 vc->vc_font.height = (*default_mode)->vc_font.height;
1345 p->userfont = t->userfont;
1347 REFCOUNT(p->fontdata)++;
1350 charcnt = FNTCHARCNT(p->fontdata);
1352 var->activate = FB_ACTIVATE_NOW;
1353 info->var.activate = var->activate;
1354 var->yoffset = info->var.yoffset;
1355 var->xoffset = info->var.xoffset;
1356 fb_set_var(info, var);
1357 ops->var = info->var;
1358 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
1359 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
1360 if (charcnt == 256) {
1361 vc->vc_hi_font_mask = 0;
1363 vc->vc_hi_font_mask = 0x100;
1364 if (vc->vc_can_do_color)
1365 vc->vc_complement_mask <<= 1;
1368 if (!*svc->vc_uni_pagedir_loc)
1369 con_set_default_unimap(svc);
1370 if (!*vc->vc_uni_pagedir_loc)
1371 con_copy_unimap(vc, svc);
1373 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
1374 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
1375 cols /= vc->vc_font.width;
1376 rows /= vc->vc_font.height;
1377 vc_resize(vc, cols, rows);
1379 if (CON_IS_VISIBLE(vc)) {
1382 fbcon_update_softback(vc);
1386 static __inline__ void ywrap_up(struct vc_data *vc, int count)
1388 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1389 struct fbcon_ops *ops = info->fbcon_par;
1390 struct display *p = &fb_display[vc->vc_num];
1392 p->yscroll += count;
1393 if (p->yscroll >= p->vrows) /* Deal with wrap */
1394 p->yscroll -= p->vrows;
1395 ops->var.xoffset = 0;
1396 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1397 ops->var.vmode |= FB_VMODE_YWRAP;
1398 ops->update_start(info);
1399 scrollback_max += count;
1400 if (scrollback_max > scrollback_phys_max)
1401 scrollback_max = scrollback_phys_max;
1402 scrollback_current = 0;
1405 static __inline__ void ywrap_down(struct vc_data *vc, int count)
1407 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1408 struct fbcon_ops *ops = info->fbcon_par;
1409 struct display *p = &fb_display[vc->vc_num];
1411 p->yscroll -= count;
1412 if (p->yscroll < 0) /* Deal with wrap */
1413 p->yscroll += p->vrows;
1414 ops->var.xoffset = 0;
1415 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1416 ops->var.vmode |= FB_VMODE_YWRAP;
1417 ops->update_start(info);
1418 scrollback_max -= count;
1419 if (scrollback_max < 0)
1421 scrollback_current = 0;
1424 static __inline__ void ypan_up(struct vc_data *vc, int count)
1426 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1427 struct display *p = &fb_display[vc->vc_num];
1428 struct fbcon_ops *ops = info->fbcon_par;
1430 p->yscroll += count;
1431 if (p->yscroll > p->vrows - vc->vc_rows) {
1432 ops->bmove(vc, info, p->vrows - vc->vc_rows,
1433 0, 0, 0, vc->vc_rows, vc->vc_cols);
1434 p->yscroll -= p->vrows - vc->vc_rows;
1437 ops->var.xoffset = 0;
1438 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1439 ops->var.vmode &= ~FB_VMODE_YWRAP;
1440 ops->update_start(info);
1441 fbcon_clear_margins(vc, 1);
1442 scrollback_max += count;
1443 if (scrollback_max > scrollback_phys_max)
1444 scrollback_max = scrollback_phys_max;
1445 scrollback_current = 0;
1448 static __inline__ void ypan_up_redraw(struct vc_data *vc, int t, int count)
1450 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1451 struct fbcon_ops *ops = info->fbcon_par;
1452 struct display *p = &fb_display[vc->vc_num];
1454 p->yscroll += count;
1456 if (p->yscroll > p->vrows - vc->vc_rows) {
1457 p->yscroll -= p->vrows - vc->vc_rows;
1458 fbcon_redraw_move(vc, p, t + count, vc->vc_rows - count, t);
1461 ops->var.xoffset = 0;
1462 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1463 ops->var.vmode &= ~FB_VMODE_YWRAP;
1464 ops->update_start(info);
1465 fbcon_clear_margins(vc, 1);
1466 scrollback_max += count;
1467 if (scrollback_max > scrollback_phys_max)
1468 scrollback_max = scrollback_phys_max;
1469 scrollback_current = 0;
1472 static __inline__ void ypan_down(struct vc_data *vc, int count)
1474 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1475 struct display *p = &fb_display[vc->vc_num];
1476 struct fbcon_ops *ops = info->fbcon_par;
1478 p->yscroll -= count;
1479 if (p->yscroll < 0) {
1480 ops->bmove(vc, info, 0, 0, p->vrows - vc->vc_rows,
1481 0, vc->vc_rows, vc->vc_cols);
1482 p->yscroll += p->vrows - vc->vc_rows;
1485 ops->var.xoffset = 0;
1486 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1487 ops->var.vmode &= ~FB_VMODE_YWRAP;
1488 ops->update_start(info);
1489 fbcon_clear_margins(vc, 1);
1490 scrollback_max -= count;
1491 if (scrollback_max < 0)
1493 scrollback_current = 0;
1496 static __inline__ void ypan_down_redraw(struct vc_data *vc, int t, int count)
1498 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1499 struct fbcon_ops *ops = info->fbcon_par;
1500 struct display *p = &fb_display[vc->vc_num];
1502 p->yscroll -= count;
1504 if (p->yscroll < 0) {
1505 p->yscroll += p->vrows - vc->vc_rows;
1506 fbcon_redraw_move(vc, p, t, vc->vc_rows - count, t + count);
1509 ops->var.xoffset = 0;
1510 ops->var.yoffset = p->yscroll * vc->vc_font.height;
1511 ops->var.vmode &= ~FB_VMODE_YWRAP;
1512 ops->update_start(info);
1513 fbcon_clear_margins(vc, 1);
1514 scrollback_max -= count;
1515 if (scrollback_max < 0)
1517 scrollback_current = 0;
1520 static void fbcon_redraw_softback(struct vc_data *vc, struct display *p,
1523 int count = vc->vc_rows;
1524 unsigned short *d, *s;
1528 d = (u16 *) softback_curr;
1529 if (d == (u16 *) softback_in)
1530 d = (u16 *) vc->vc_origin;
1531 n = softback_curr + delta * vc->vc_size_row;
1532 softback_lines -= delta;
1534 if (softback_curr < softback_top && n < softback_buf) {
1535 n += softback_end - softback_buf;
1536 if (n < softback_top) {
1538 (softback_top - n) / vc->vc_size_row;
1541 } else if (softback_curr >= softback_top
1542 && n < softback_top) {
1544 (softback_top - n) / vc->vc_size_row;
1548 if (softback_curr > softback_in && n >= softback_end) {
1549 n += softback_buf - softback_end;
1550 if (n > softback_in) {
1554 } else if (softback_curr <= softback_in && n > softback_in) {
1559 if (n == softback_curr)
1562 s = (u16 *) softback_curr;
1563 if (s == (u16 *) softback_in)
1564 s = (u16 *) vc->vc_origin;
1566 unsigned short *start;
1570 unsigned short attr = 1;
1573 le = advance_row(s, 1);
1576 if (attr != (c & 0xff00)) {
1579 fbcon_putcs(vc, start, s - start,
1585 if (c == scr_readw(d)) {
1587 fbcon_putcs(vc, start, s - start,
1600 fbcon_putcs(vc, start, s - start, line, x);
1602 if (d == (u16 *) softback_end)
1603 d = (u16 *) softback_buf;
1604 if (d == (u16 *) softback_in)
1605 d = (u16 *) vc->vc_origin;
1606 if (s == (u16 *) softback_end)
1607 s = (u16 *) softback_buf;
1608 if (s == (u16 *) softback_in)
1609 s = (u16 *) vc->vc_origin;
1613 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
1614 int line, int count, int dy)
1616 unsigned short *s = (unsigned short *)
1617 (vc->vc_origin + vc->vc_size_row * line);
1620 unsigned short *start = s;
1621 unsigned short *le = advance_row(s, 1);
1624 unsigned short attr = 1;
1628 if (attr != (c & 0xff00)) {
1631 fbcon_putcs(vc, start, s - start,
1637 console_conditional_schedule();
1641 fbcon_putcs(vc, start, s - start, dy, x);
1642 console_conditional_schedule();
1647 static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
1648 struct display *p, int line, int count, int ycount)
1650 int offset = ycount * vc->vc_cols;
1651 unsigned short *d = (unsigned short *)
1652 (vc->vc_origin + vc->vc_size_row * line);
1653 unsigned short *s = d + offset;
1654 struct fbcon_ops *ops = info->fbcon_par;
1657 unsigned short *start = s;
1658 unsigned short *le = advance_row(s, 1);
1665 if (c == scr_readw(d)) {
1667 ops->bmove(vc, info, line + ycount, x,
1668 line, x, 1, s-start);
1678 console_conditional_schedule();
1683 ops->bmove(vc, info, line + ycount, x, line, x, 1,
1685 console_conditional_schedule();
1690 /* NOTE: We subtract two lines from these pointers */
1691 s -= vc->vc_size_row;
1692 d -= vc->vc_size_row;
1697 static void fbcon_redraw(struct vc_data *vc, struct display *p,
1698 int line, int count, int offset)
1700 unsigned short *d = (unsigned short *)
1701 (vc->vc_origin + vc->vc_size_row * line);
1702 unsigned short *s = d + offset;
1705 unsigned short *start = s;
1706 unsigned short *le = advance_row(s, 1);
1709 unsigned short attr = 1;
1713 if (attr != (c & 0xff00)) {
1716 fbcon_putcs(vc, start, s - start,
1722 if (c == scr_readw(d)) {
1724 fbcon_putcs(vc, start, s - start,
1734 console_conditional_schedule();
1739 fbcon_putcs(vc, start, s - start, line, x);
1740 console_conditional_schedule();
1745 /* NOTE: We subtract two lines from these pointers */
1746 s -= vc->vc_size_row;
1747 d -= vc->vc_size_row;
1752 static inline void fbcon_softback_note(struct vc_data *vc, int t,
1757 if (vc->vc_num != fg_console)
1759 p = (unsigned short *) (vc->vc_origin + t * vc->vc_size_row);
1762 scr_memcpyw((u16 *) softback_in, p, vc->vc_size_row);
1764 p = advance_row(p, 1);
1765 softback_in += vc->vc_size_row;
1766 if (softback_in == softback_end)
1767 softback_in = softback_buf;
1768 if (softback_in == softback_top) {
1769 softback_top += vc->vc_size_row;
1770 if (softback_top == softback_end)
1771 softback_top = softback_buf;
1774 softback_curr = softback_in;
1777 static int fbcon_scroll(struct vc_data *vc, int t, int b, int dir,
1780 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1781 struct display *p = &fb_display[vc->vc_num];
1782 int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
1784 if (fbcon_is_inactive(vc, info))
1787 fbcon_cursor(vc, CM_ERASE);
1790 * ++Geert: Only use ywrap/ypan if the console is in text mode
1791 * ++Andrew: Only use ypan on hardware text mode when scrolling the
1792 * whole screen (prevents flicker).
1797 if (count > vc->vc_rows) /* Maximum realistic size */
1798 count = vc->vc_rows;
1800 fbcon_softback_note(vc, t, count);
1801 if (logo_shown >= 0)
1803 switch (p->scrollmode) {
1805 fbcon_redraw_blit(vc, info, p, t, b - t - count,
1807 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1808 scr_memsetw((unsigned short *) (vc->vc_origin +
1811 vc->vc_video_erase_char,
1812 vc->vc_size_row * count);
1816 case SCROLL_WRAP_MOVE:
1817 if (b - t - count > 3 * vc->vc_rows >> 2) {
1819 fbcon_bmove(vc, 0, 0, count, 0, t,
1821 ywrap_up(vc, count);
1822 if (vc->vc_rows - b > 0)
1823 fbcon_bmove(vc, b - count, 0, b, 0,
1826 } else if (info->flags & FBINFO_READS_FAST)
1827 fbcon_bmove(vc, t + count, 0, t, 0,
1828 b - t - count, vc->vc_cols);
1831 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1834 case SCROLL_PAN_REDRAW:
1835 if ((p->yscroll + count <=
1836 2 * (p->vrows - vc->vc_rows))
1837 && ((!scroll_partial && (b - t == vc->vc_rows))
1840 3 * vc->vc_rows >> 2)))) {
1842 fbcon_redraw_move(vc, p, 0, t, count);
1843 ypan_up_redraw(vc, t, count);
1844 if (vc->vc_rows - b > 0)
1845 fbcon_redraw_move(vc, p, b,
1846 vc->vc_rows - b, b);
1848 fbcon_redraw_move(vc, p, t + count, b - t - count, t);
1849 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1852 case SCROLL_PAN_MOVE:
1853 if ((p->yscroll + count <=
1854 2 * (p->vrows - vc->vc_rows))
1855 && ((!scroll_partial && (b - t == vc->vc_rows))
1858 3 * vc->vc_rows >> 2)))) {
1860 fbcon_bmove(vc, 0, 0, count, 0, t,
1863 if (vc->vc_rows - b > 0)
1864 fbcon_bmove(vc, b - count, 0, b, 0,
1867 } else if (info->flags & FBINFO_READS_FAST)
1868 fbcon_bmove(vc, t + count, 0, t, 0,
1869 b - t - count, vc->vc_cols);
1872 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1877 fbcon_redraw(vc, p, t, b - t - count,
1878 count * vc->vc_cols);
1879 fbcon_clear(vc, b - count, 0, count, vc->vc_cols);
1880 scr_memsetw((unsigned short *) (vc->vc_origin +
1883 vc->vc_video_erase_char,
1884 vc->vc_size_row * count);
1890 if (count > vc->vc_rows) /* Maximum realistic size */
1891 count = vc->vc_rows;
1892 if (logo_shown >= 0)
1894 switch (p->scrollmode) {
1896 fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
1898 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1899 scr_memsetw((unsigned short *) (vc->vc_origin +
1902 vc->vc_video_erase_char,
1903 vc->vc_size_row * count);
1907 case SCROLL_WRAP_MOVE:
1908 if (b - t - count > 3 * vc->vc_rows >> 2) {
1909 if (vc->vc_rows - b > 0)
1910 fbcon_bmove(vc, b, 0, b - count, 0,
1913 ywrap_down(vc, count);
1915 fbcon_bmove(vc, count, 0, 0, 0, t,
1917 } else if (info->flags & FBINFO_READS_FAST)
1918 fbcon_bmove(vc, t, 0, t + count, 0,
1919 b - t - count, vc->vc_cols);
1922 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1925 case SCROLL_PAN_MOVE:
1926 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1927 && ((!scroll_partial && (b - t == vc->vc_rows))
1930 3 * vc->vc_rows >> 2)))) {
1931 if (vc->vc_rows - b > 0)
1932 fbcon_bmove(vc, b, 0, b - count, 0,
1935 ypan_down(vc, count);
1937 fbcon_bmove(vc, count, 0, 0, 0, t,
1939 } else if (info->flags & FBINFO_READS_FAST)
1940 fbcon_bmove(vc, t, 0, t + count, 0,
1941 b - t - count, vc->vc_cols);
1944 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1947 case SCROLL_PAN_REDRAW:
1948 if ((count - p->yscroll <= p->vrows - vc->vc_rows)
1949 && ((!scroll_partial && (b - t == vc->vc_rows))
1952 3 * vc->vc_rows >> 2)))) {
1953 if (vc->vc_rows - b > 0)
1954 fbcon_redraw_move(vc, p, b, vc->vc_rows - b,
1956 ypan_down_redraw(vc, t, count);
1958 fbcon_redraw_move(vc, p, count, t, 0);
1960 fbcon_redraw_move(vc, p, t, b - t - count, t + count);
1961 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1966 fbcon_redraw(vc, p, b - 1, b - t - count,
1967 -count * vc->vc_cols);
1968 fbcon_clear(vc, t, 0, count, vc->vc_cols);
1969 scr_memsetw((unsigned short *) (vc->vc_origin +
1972 vc->vc_video_erase_char,
1973 vc->vc_size_row * count);
1981 static void fbcon_bmove(struct vc_data *vc, int sy, int sx, int dy, int dx,
1982 int height, int width)
1984 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
1985 struct display *p = &fb_display[vc->vc_num];
1987 if (fbcon_is_inactive(vc, info))
1990 if (!width || !height)
1993 /* Split blits that cross physical y_wrap case.
1994 * Pathological case involves 4 blits, better to use recursive
1995 * code rather than unrolled case
1997 * Recursive invocations don't need to erase the cursor over and
1998 * over again, so we use fbcon_bmove_rec()
2000 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, height, width,
2001 p->vrows - p->yscroll);
2004 static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
2005 int dy, int dx, int height, int width, u_int y_break)
2007 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2008 struct fbcon_ops *ops = info->fbcon_par;
2011 if (sy < y_break && sy + height > y_break) {
2013 if (dy < sy) { /* Avoid trashing self */
2014 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2016 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2017 height - b, width, y_break);
2019 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2020 height - b, width, y_break);
2021 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2027 if (dy < y_break && dy + height > y_break) {
2029 if (dy < sy) { /* Avoid trashing self */
2030 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2032 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2033 height - b, width, y_break);
2035 fbcon_bmove_rec(vc, p, sy + b, sx, dy + b, dx,
2036 height - b, width, y_break);
2037 fbcon_bmove_rec(vc, p, sy, sx, dy, dx, b, width,
2042 ops->bmove(vc, info, real_y(p, sy), sx, real_y(p, dy), dx,
2046 static void updatescrollmode(struct display *p,
2047 struct fb_info *info,
2050 struct fbcon_ops *ops = info->fbcon_par;
2051 int fh = vc->vc_font.height;
2052 int cap = info->flags;
2054 int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
2055 info->fix.xpanstep);
2056 int ywrap = FBCON_SWAP(ops->rotate, info->fix.ywrapstep, t);
2057 int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2058 int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
2059 info->var.xres_virtual);
2060 int good_pan = (cap & FBINFO_HWACCEL_YPAN) &&
2061 divides(ypan, vc->vc_font.height) && vyres > yres;
2062 int good_wrap = (cap & FBINFO_HWACCEL_YWRAP) &&
2063 divides(ywrap, vc->vc_font.height) &&
2064 divides(vc->vc_font.height, vyres) &&
2065 divides(vc->vc_font.height, yres);
2066 int reading_fast = cap & FBINFO_READS_FAST;
2067 int fast_copyarea = (cap & FBINFO_HWACCEL_COPYAREA) &&
2068 !(cap & FBINFO_HWACCEL_DISABLED);
2069 int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
2070 !(cap & FBINFO_HWACCEL_DISABLED);
2072 p->vrows = vyres/fh;
2073 if (yres > (fh * (vc->vc_rows + 1)))
2074 p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
2075 if ((yres % fh) && (vyres % fh < yres % fh))
2078 if (good_wrap || good_pan) {
2079 if (reading_fast || fast_copyarea)
2080 p->scrollmode = good_wrap ?
2081 SCROLL_WRAP_MOVE : SCROLL_PAN_MOVE;
2083 p->scrollmode = good_wrap ? SCROLL_REDRAW :
2086 if (reading_fast || (fast_copyarea && !fast_imageblit))
2087 p->scrollmode = SCROLL_MOVE;
2089 p->scrollmode = SCROLL_REDRAW;
2093 static int fbcon_resize(struct vc_data *vc, unsigned int width,
2094 unsigned int height, unsigned int user)
2096 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2097 struct fbcon_ops *ops = info->fbcon_par;
2098 struct display *p = &fb_display[vc->vc_num];
2099 struct fb_var_screeninfo var = info->var;
2100 int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
2102 virt_w = FBCON_SWAP(ops->rotate, width, height);
2103 virt_h = FBCON_SWAP(ops->rotate, height, width);
2104 virt_fw = FBCON_SWAP(ops->rotate, vc->vc_font.width,
2105 vc->vc_font.height);
2106 virt_fh = FBCON_SWAP(ops->rotate, vc->vc_font.height,
2108 var.xres = virt_w * virt_fw;
2109 var.yres = virt_h * virt_fh;
2110 x_diff = info->var.xres - var.xres;
2111 y_diff = info->var.yres - var.yres;
2112 if (x_diff < 0 || x_diff > virt_fw ||
2113 y_diff < 0 || y_diff > virt_fh) {
2114 const struct fb_videomode *mode;
2116 DPRINTK("attempting resize %ix%i\n", var.xres, var.yres);
2117 mode = fb_find_best_mode(&var, &info->modelist);
2120 display_to_var(&var, p);
2121 fb_videomode_to_var(&var, mode);
2123 if (virt_w > var.xres/virt_fw || virt_h > var.yres/virt_fh)
2126 DPRINTK("resize now %ix%i\n", var.xres, var.yres);
2127 if (CON_IS_VISIBLE(vc)) {
2128 var.activate = FB_ACTIVATE_NOW |
2130 fb_set_var(info, &var);
2132 var_to_display(p, &info->var, info);
2133 ops->var = info->var;
2135 updatescrollmode(p, info, vc);
2139 static int fbcon_switch(struct vc_data *vc)
2141 struct fb_info *info, *old_info = NULL;
2142 struct fbcon_ops *ops;
2143 struct display *p = &fb_display[vc->vc_num];
2144 struct fb_var_screeninfo var;
2145 int i, ret, prev_console, charcnt = 256;
2147 info = registered_fb[con2fb_map[vc->vc_num]];
2148 ops = info->fbcon_par;
2152 fbcon_set_origin(vc);
2153 softback_top = softback_curr = softback_in = softback_buf;
2155 fbcon_update_softback(vc);
2158 if (logo_shown >= 0) {
2159 struct vc_data *conp2 = vc_cons[logo_shown].d;
2161 if (conp2->vc_top == logo_lines
2162 && conp2->vc_bottom == conp2->vc_rows)
2164 logo_shown = FBCON_LOGO_CANSHOW;
2167 prev_console = ops->currcon;
2168 if (prev_console != -1)
2169 old_info = registered_fb[con2fb_map[prev_console]];
2171 * FIXME: If we have multiple fbdev's loaded, we need to
2172 * update all info->currcon. Perhaps, we can place this
2173 * in a centralized structure, but this might break some
2176 * info->currcon = vc->vc_num;
2178 for (i = 0; i < FB_MAX; i++) {
2179 if (registered_fb[i] != NULL && registered_fb[i]->fbcon_par) {
2180 struct fbcon_ops *o = registered_fb[i]->fbcon_par;
2182 o->currcon = vc->vc_num;
2185 memset(&var, 0, sizeof(struct fb_var_screeninfo));
2186 display_to_var(&var, p);
2187 var.activate = FB_ACTIVATE_NOW;
2190 * make sure we don't unnecessarily trip the memcmp()
2193 info->var.activate = var.activate;
2194 var.vmode |= info->var.vmode & ~FB_VMODE_MASK;
2195 fb_set_var(info, &var);
2196 ops->var = info->var;
2198 if (old_info != NULL && (old_info != info ||
2199 info->flags & FBINFO_MISC_ALWAYS_SETPAR)) {
2200 if (info->fbops->fb_set_par) {
2201 ret = info->fbops->fb_set_par(info);
2204 printk(KERN_ERR "fbcon_switch: detected "
2205 "unhandled fb_set_par error, "
2206 "error code %d\n", ret);
2209 if (old_info != info)
2210 fbcon_del_cursor_timer(old_info);
2213 if (fbcon_is_inactive(vc, info) ||
2214 ops->blank_state != FB_BLANK_UNBLANK)
2215 fbcon_del_cursor_timer(info);
2217 fbcon_add_cursor_timer(info);
2219 set_blitting_type(vc, info);
2220 ops->cursor_reset = 1;
2222 if (ops->rotate_font && ops->rotate_font(info, vc)) {
2223 ops->rotate = FB_ROTATE_UR;
2224 set_blitting_type(vc, info);
2227 vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
2228 vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
2231 charcnt = FNTCHARCNT(vc->vc_font.data);
2234 vc->vc_complement_mask <<= 1;
2236 updatescrollmode(p, info, vc);
2238 switch (p->scrollmode) {
2239 case SCROLL_WRAP_MOVE:
2240 scrollback_phys_max = p->vrows - vc->vc_rows;
2242 case SCROLL_PAN_MOVE:
2243 case SCROLL_PAN_REDRAW:
2244 scrollback_phys_max = p->vrows - 2 * vc->vc_rows;
2245 if (scrollback_phys_max < 0)
2246 scrollback_phys_max = 0;
2249 scrollback_phys_max = 0;
2254 scrollback_current = 0;
2256 if (!fbcon_is_inactive(vc, info)) {
2257 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2258 ops->update_start(info);
2261 fbcon_set_palette(vc, color_table);
2262 fbcon_clear_margins(vc, 0);
2264 if (logo_shown == FBCON_LOGO_DRAW) {
2266 logo_shown = fg_console;
2267 /* This is protected above by initmem_freed */
2268 fb_show_logo(info, ops->rotate);
2270 vc->vc_origin + vc->vc_size_row * vc->vc_top,
2271 vc->vc_size_row * (vc->vc_bottom -
2278 static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
2281 struct fb_event event;
2284 unsigned short charmask = vc->vc_hi_font_mask ?
2286 unsigned short oldc;
2288 oldc = vc->vc_video_erase_char;
2289 vc->vc_video_erase_char &= charmask;
2290 fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
2291 vc->vc_video_erase_char = oldc;
2295 if (!lock_fb_info(info))
2298 event.data = ␣
2299 fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
2300 unlock_fb_info(info);
2303 static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
2305 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2306 struct fbcon_ops *ops = info->fbcon_par;
2309 struct fb_var_screeninfo var = info->var;
2314 var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
2315 fb_set_var(info, &var);
2317 ops->var = info->var;
2321 if (!fbcon_is_inactive(vc, info)) {
2322 if (ops->blank_state != blank) {
2323 ops->blank_state = blank;
2324 fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
2325 ops->cursor_flash = (!blank);
2327 if (!(info->flags & FBINFO_MISC_USEREVENT))
2328 if (fb_blank(info, blank))
2329 fbcon_generic_blank(vc, info, blank);
2336 if (mode_switch || fbcon_is_inactive(vc, info) ||
2337 ops->blank_state != FB_BLANK_UNBLANK)
2338 fbcon_del_cursor_timer(info);
2340 fbcon_add_cursor_timer(info);
2345 static int fbcon_get_font(struct vc_data *vc, struct console_font *font)
2347 u8 *fontdata = vc->vc_font.data;
2348 u8 *data = font->data;
2351 font->width = vc->vc_font.width;
2352 font->height = vc->vc_font.height;
2353 font->charcount = vc->vc_hi_font_mask ? 512 : 256;
2357 if (font->width <= 8) {
2358 j = vc->vc_font.height;
2359 for (i = 0; i < font->charcount; i++) {
2360 memcpy(data, fontdata, j);
2361 memset(data + j, 0, 32 - j);
2365 } else if (font->width <= 16) {
2366 j = vc->vc_font.height * 2;
2367 for (i = 0; i < font->charcount; i++) {
2368 memcpy(data, fontdata, j);
2369 memset(data + j, 0, 64 - j);
2373 } else if (font->width <= 24) {
2374 for (i = 0; i < font->charcount; i++) {
2375 for (j = 0; j < vc->vc_font.height; j++) {
2376 *data++ = fontdata[0];
2377 *data++ = fontdata[1];
2378 *data++ = fontdata[2];
2379 fontdata += sizeof(u32);
2381 memset(data, 0, 3 * (32 - j));
2382 data += 3 * (32 - j);
2385 j = vc->vc_font.height * 4;
2386 for (i = 0; i < font->charcount; i++) {
2387 memcpy(data, fontdata, j);
2388 memset(data + j, 0, 128 - j);
2396 static int fbcon_do_set_font(struct vc_data *vc, int w, int h,
2397 const u8 * data, int userfont)
2399 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2400 struct fbcon_ops *ops = info->fbcon_par;
2401 struct display *p = &fb_display[vc->vc_num];
2404 char *old_data = NULL;
2406 if (CON_IS_VISIBLE(vc) && softback_lines)
2407 fbcon_set_origin(vc);
2409 resize = (w != vc->vc_font.width) || (h != vc->vc_font.height);
2411 old_data = vc->vc_font.data;
2413 cnt = FNTCHARCNT(data);
2416 vc->vc_font.data = (void *)(p->fontdata = data);
2417 if ((p->userfont = userfont))
2419 vc->vc_font.width = w;
2420 vc->vc_font.height = h;
2421 if (vc->vc_hi_font_mask && cnt == 256) {
2422 vc->vc_hi_font_mask = 0;
2423 if (vc->vc_can_do_color) {
2424 vc->vc_complement_mask >>= 1;
2425 vc->vc_s_complement_mask >>= 1;
2428 /* ++Edmund: reorder the attribute bits */
2429 if (vc->vc_can_do_color) {
2430 unsigned short *cp =
2431 (unsigned short *) vc->vc_origin;
2432 int count = vc->vc_screenbuf_size / 2;
2434 for (; count > 0; count--, cp++) {
2436 scr_writew(((c & 0xfe00) >> 1) |
2439 c = vc->vc_video_erase_char;
2440 vc->vc_video_erase_char =
2441 ((c & 0xfe00) >> 1) | (c & 0xff);
2444 } else if (!vc->vc_hi_font_mask && cnt == 512) {
2445 vc->vc_hi_font_mask = 0x100;
2446 if (vc->vc_can_do_color) {
2447 vc->vc_complement_mask <<= 1;
2448 vc->vc_s_complement_mask <<= 1;
2451 /* ++Edmund: reorder the attribute bits */
2453 unsigned short *cp =
2454 (unsigned short *) vc->vc_origin;
2455 int count = vc->vc_screenbuf_size / 2;
2457 for (; count > 0; count--, cp++) {
2458 unsigned short newc;
2460 if (vc->vc_can_do_color)
2462 ((c & 0xff00) << 1) | (c &
2466 scr_writew(newc, cp);
2468 c = vc->vc_video_erase_char;
2469 if (vc->vc_can_do_color) {
2470 vc->vc_video_erase_char =
2471 ((c & 0xff00) << 1) | (c & 0xff);
2474 vc->vc_video_erase_char = c & ~0x100;
2482 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2483 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2486 vc_resize(vc, cols, rows);
2487 if (CON_IS_VISIBLE(vc) && softback_buf)
2488 fbcon_update_softback(vc);
2489 } else if (CON_IS_VISIBLE(vc)
2490 && vc->vc_mode == KD_TEXT) {
2491 fbcon_clear_margins(vc, 0);
2495 if (old_data && (--REFCOUNT(old_data) == 0))
2496 kfree(old_data - FONT_EXTRA_WORDS * sizeof(int));
2500 static int fbcon_copy_font(struct vc_data *vc, int con)
2502 struct display *od = &fb_display[con];
2503 struct console_font *f = &vc->vc_font;
2505 if (od->fontdata == f->data)
2506 return 0; /* already the same font... */
2507 return fbcon_do_set_font(vc, f->width, f->height, od->fontdata, od->userfont);
2511 * User asked to set font; we are guaranteed that
2512 * a) width and height are in range 1..32
2513 * b) charcount does not exceed 512
2514 * but lets not assume that, since someone might someday want to use larger
2515 * fonts. And charcount of 512 is small for unicode support.
2517 * However, user space gives the font in 32 rows , regardless of
2518 * actual font height. So a new API is needed if support for larger fonts
2519 * is ever implemented.
2522 static int fbcon_set_font(struct vc_data *vc, struct console_font *font, unsigned flags)
2524 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2525 unsigned charcount = font->charcount;
2526 int w = font->width;
2527 int h = font->height;
2530 u8 *new_data, *data = font->data;
2531 int pitch = (font->width+7) >> 3;
2533 /* Is there a reason why fbconsole couldn't handle any charcount >256?
2534 * If not this check should be changed to charcount < 256 */
2535 if (charcount != 256 && charcount != 512)
2538 /* Make sure drawing engine can handle the font */
2539 if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
2540 !(info->pixmap.blit_y & (1 << (font->height - 1))))
2543 /* Make sure driver can handle the font length */
2544 if (fbcon_invalid_charcount(info, charcount))
2547 size = h * pitch * charcount;
2549 new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size, GFP_USER);
2554 new_data += FONT_EXTRA_WORDS * sizeof(int);
2555 FNTSIZE(new_data) = size;
2556 FNTCHARCNT(new_data) = charcount;
2557 REFCOUNT(new_data) = 0; /* usage counter */
2558 for (i=0; i< charcount; i++) {
2559 memcpy(new_data + i*h*pitch, data + i*32*pitch, h*pitch);
2562 /* Since linux has a nice crc32 function use it for counting font
2564 csum = crc32(0, new_data, size);
2566 FNTSUM(new_data) = csum;
2567 /* Check if the same font is on some other console already */
2568 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2569 struct vc_data *tmp = vc_cons[i].d;
2571 if (fb_display[i].userfont &&
2572 fb_display[i].fontdata &&
2573 FNTSUM(fb_display[i].fontdata) == csum &&
2574 FNTSIZE(fb_display[i].fontdata) == size &&
2575 tmp->vc_font.width == w &&
2576 !memcmp(fb_display[i].fontdata, new_data, size)) {
2577 kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
2578 new_data = (u8 *)fb_display[i].fontdata;
2582 return fbcon_do_set_font(vc, font->width, font->height, new_data, 1);
2585 static int fbcon_set_def_font(struct vc_data *vc, struct console_font *font, char *name)
2587 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2588 const struct font_desc *f;
2591 f = get_default_font(info->var.xres, info->var.yres,
2592 info->pixmap.blit_x, info->pixmap.blit_y);
2593 else if (!(f = find_font(name)))
2596 font->width = f->width;
2597 font->height = f->height;
2598 return fbcon_do_set_font(vc, f->width, f->height, f->data, 0);
2601 static u16 palette_red[16];
2602 static u16 palette_green[16];
2603 static u16 palette_blue[16];
2605 static struct fb_cmap palette_cmap = {
2606 0, 16, palette_red, palette_green, palette_blue, NULL
2609 static int fbcon_set_palette(struct vc_data *vc, unsigned char *table)
2611 struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
2615 if (fbcon_is_inactive(vc, info))
2618 if (!CON_IS_VISIBLE(vc))
2621 depth = fb_get_color_depth(&info->var, &info->fix);
2623 for (i = j = 0; i < 16; i++) {
2625 val = vc->vc_palette[j++];
2626 palette_red[k] = (val << 8) | val;
2627 val = vc->vc_palette[j++];
2628 palette_green[k] = (val << 8) | val;
2629 val = vc->vc_palette[j++];
2630 palette_blue[k] = (val << 8) | val;
2632 palette_cmap.len = 16;
2633 palette_cmap.start = 0;
2635 * If framebuffer is capable of less than 16 colors,
2636 * use default palette of fbcon.
2639 fb_copy_cmap(fb_default_cmap(1 << depth), &palette_cmap);
2641 return fb_set_cmap(&palette_cmap, info);
2644 static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
2649 if (vc->vc_num != fg_console || !softback_lines)
2650 return (u16 *) (vc->vc_origin + offset);
2651 line = offset / vc->vc_size_row;
2652 if (line >= softback_lines)
2653 return (u16 *) (vc->vc_origin + offset -
2654 softback_lines * vc->vc_size_row);
2655 p = softback_curr + offset;
2656 if (p >= softback_end)
2657 p += softback_buf - softback_end;
2661 static unsigned long fbcon_getxy(struct vc_data *vc, unsigned long pos,
2667 if (pos >= vc->vc_origin && pos < vc->vc_scr_end) {
2668 unsigned long offset = (pos - vc->vc_origin) / 2;
2670 x = offset % vc->vc_cols;
2671 y = offset / vc->vc_cols;
2672 if (vc->vc_num == fg_console)
2673 y += softback_lines;
2674 ret = pos + (vc->vc_cols - x) * 2;
2675 } else if (vc->vc_num == fg_console && softback_lines) {
2676 unsigned long offset = pos - softback_curr;
2678 if (pos < softback_curr)
2679 offset += softback_end - softback_buf;
2681 x = offset % vc->vc_cols;
2682 y = offset / vc->vc_cols;
2683 ret = pos + (vc->vc_cols - x) * 2;
2684 if (ret == softback_end)
2686 if (ret == softback_in)
2687 ret = vc->vc_origin;
2689 /* Should not happen */
2691 ret = vc->vc_origin;
2700 /* As we might be inside of softback, we may work with non-contiguous buffer,
2701 that's why we have to use a separate routine. */
2702 static void fbcon_invert_region(struct vc_data *vc, u16 * p, int cnt)
2705 u16 a = scr_readw(p);
2706 if (!vc->vc_can_do_color)
2708 else if (vc->vc_hi_font_mask == 0x100)
2709 a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) |
2710 (((a) & 0x0e00) << 4);
2712 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) |
2713 (((a) & 0x0700) << 4);
2715 if (p == (u16 *) softback_end)
2716 p = (u16 *) softback_buf;
2717 if (p == (u16 *) softback_in)
2718 p = (u16 *) vc->vc_origin;
2722 static int fbcon_scrolldelta(struct vc_data *vc, int lines)
2724 struct fb_info *info = registered_fb[con2fb_map[fg_console]];
2725 struct fbcon_ops *ops = info->fbcon_par;
2726 struct display *disp = &fb_display[fg_console];
2727 int offset, limit, scrollback_old;
2730 if (vc->vc_num != fg_console)
2732 if (vc->vc_mode != KD_TEXT || !lines)
2734 if (logo_shown >= 0) {
2735 struct vc_data *conp2 = vc_cons[logo_shown].d;
2737 if (conp2->vc_top == logo_lines
2738 && conp2->vc_bottom == conp2->vc_rows)
2740 if (logo_shown == vc->vc_num) {
2746 logo_lines * vc->vc_size_row;
2747 for (i = 0; i < logo_lines; i++) {
2748 if (p == softback_top)
2750 if (p == softback_buf)
2752 p -= vc->vc_size_row;
2753 q -= vc->vc_size_row;
2754 scr_memcpyw((u16 *) q, (u16 *) p,
2757 softback_in = softback_curr = p;
2758 update_region(vc, vc->vc_origin,
2759 logo_lines * vc->vc_cols);
2761 logo_shown = FBCON_LOGO_CANSHOW;
2763 fbcon_cursor(vc, CM_ERASE | CM_SOFTBACK);
2764 fbcon_redraw_softback(vc, disp, lines);
2765 fbcon_cursor(vc, CM_DRAW | CM_SOFTBACK);
2769 if (!scrollback_phys_max)
2772 scrollback_old = scrollback_current;
2773 scrollback_current -= lines;
2774 if (scrollback_current < 0)
2775 scrollback_current = 0;
2776 else if (scrollback_current > scrollback_max)
2777 scrollback_current = scrollback_max;
2778 if (scrollback_current == scrollback_old)
2781 if (fbcon_is_inactive(vc, info))
2784 fbcon_cursor(vc, CM_ERASE);
2786 offset = disp->yscroll - scrollback_current;
2787 limit = disp->vrows;
2788 switch (disp->scrollmode) {
2789 case SCROLL_WRAP_MOVE:
2790 info->var.vmode |= FB_VMODE_YWRAP;
2792 case SCROLL_PAN_MOVE:
2793 case SCROLL_PAN_REDRAW:
2794 limit -= vc->vc_rows;
2795 info->var.vmode &= ~FB_VMODE_YWRAP;
2800 else if (offset >= limit)
2803 ops->var.xoffset = 0;
2804 ops->var.yoffset = offset * vc->vc_font.height;
2805 ops->update_start(info);
2807 if (!scrollback_current)
2808 fbcon_cursor(vc, CM_DRAW);
2812 static int fbcon_set_origin(struct vc_data *vc)
2815 fbcon_scrolldelta(vc, softback_lines);
2819 static void fbcon_suspended(struct fb_info *info)
2821 struct vc_data *vc = NULL;
2822 struct fbcon_ops *ops = info->fbcon_par;
2824 if (!ops || ops->currcon < 0)
2826 vc = vc_cons[ops->currcon].d;
2828 /* Clear cursor, restore saved data */
2829 fbcon_cursor(vc, CM_ERASE);
2832 static void fbcon_resumed(struct fb_info *info)
2835 struct fbcon_ops *ops = info->fbcon_par;
2837 if (!ops || ops->currcon < 0)
2839 vc = vc_cons[ops->currcon].d;
2844 static void fbcon_modechanged(struct fb_info *info)
2846 struct fbcon_ops *ops = info->fbcon_par;
2851 if (!ops || ops->currcon < 0)
2853 vc = vc_cons[ops->currcon].d;
2854 if (vc->vc_mode != KD_TEXT ||
2855 registered_fb[con2fb_map[ops->currcon]] != info)
2858 p = &fb_display[vc->vc_num];
2859 set_blitting_type(vc, info);
2861 if (CON_IS_VISIBLE(vc)) {
2862 var_to_display(p, &info->var, info);
2863 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2864 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2865 cols /= vc->vc_font.width;
2866 rows /= vc->vc_font.height;
2867 vc_resize(vc, cols, rows);
2868 updatescrollmode(p, info, vc);
2870 scrollback_current = 0;
2872 if (!fbcon_is_inactive(vc, info)) {
2873 ops->var.xoffset = ops->var.yoffset = p->yscroll = 0;
2874 ops->update_start(info);
2877 fbcon_set_palette(vc, color_table);
2880 fbcon_update_softback(vc);
2884 static void fbcon_set_all_vcs(struct fb_info *info)
2886 struct fbcon_ops *ops = info->fbcon_par;
2889 int i, rows, cols, fg = -1;
2891 if (!ops || ops->currcon < 0)
2894 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2896 if (!vc || vc->vc_mode != KD_TEXT ||
2897 registered_fb[con2fb_map[i]] != info)
2900 if (CON_IS_VISIBLE(vc)) {
2905 p = &fb_display[vc->vc_num];
2906 set_blitting_type(vc, info);
2907 var_to_display(p, &info->var, info);
2908 cols = FBCON_SWAP(ops->rotate, info->var.xres, info->var.yres);
2909 rows = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
2910 cols /= vc->vc_font.width;
2911 rows /= vc->vc_font.height;
2912 vc_resize(vc, cols, rows);
2916 fbcon_modechanged(info);
2919 static int fbcon_mode_deleted(struct fb_info *info,
2920 struct fb_videomode *mode)
2922 struct fb_info *fb_info;
2924 int i, j, found = 0;
2926 /* before deletion, ensure that mode is not in use */
2927 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2931 fb_info = registered_fb[j];
2932 if (fb_info != info)
2937 if (fb_mode_is_equal(p->mode, mode)) {
2945 #ifdef CONFIG_VT_HW_CONSOLE_BINDING
2946 static int fbcon_unbind(void)
2950 ret = unbind_con_driver(&fb_con, first_fb_vc, last_fb_vc,
2954 fbcon_has_console_bind = 0;
2959 static inline int fbcon_unbind(void)
2963 #endif /* CONFIG_VT_HW_CONSOLE_BINDING */
2965 static int fbcon_fb_unbind(int idx)
2967 int i, new_idx = -1, ret = 0;
2969 if (!fbcon_has_console_bind)
2972 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2973 if (con2fb_map[i] != idx &&
2974 con2fb_map[i] != -1) {
2980 if (new_idx != -1) {
2981 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2982 if (con2fb_map[i] == idx)
2983 set_con2fb_map(i, new_idx, 0);
2986 ret = fbcon_unbind();
2991 static int fbcon_fb_unregistered(struct fb_info *info)
2996 for (i = first_fb_vc; i <= last_fb_vc; i++) {
2997 if (con2fb_map[i] == idx)
3001 if (idx == info_idx) {
3004 for (i = 0; i < FB_MAX; i++) {
3005 if (registered_fb[i] != NULL) {
3012 if (info_idx != -1) {
3013 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3014 if (con2fb_map[i] == -1)
3015 con2fb_map[i] = info_idx;
3019 if (primary_device == idx)
3020 primary_device = -1;
3022 if (!num_registered_fb)
3023 unregister_con_driver(&fb_con);
3028 #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
3029 static void fbcon_select_primary(struct fb_info *info)
3031 if (!map_override && primary_device == -1 &&
3032 fb_is_primary_device(info)) {
3035 printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
3036 info->fix.id, info->node);
3037 primary_device = info->node;
3039 for (i = first_fb_vc; i <= last_fb_vc; i++)
3040 con2fb_map_boot[i] = primary_device;
3042 if (con_is_bound(&fb_con)) {
3043 printk(KERN_INFO "fbcon: Remapping primary device, "
3044 "fb%i, to tty %i-%i\n", info->node,
3045 first_fb_vc + 1, last_fb_vc + 1);
3046 info_idx = primary_device;
3052 static inline void fbcon_select_primary(struct fb_info *info)
3056 #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
3058 static int fbcon_fb_registered(struct fb_info *info)
3060 int ret = 0, i, idx;
3063 fbcon_select_primary(info);
3065 if (info_idx == -1) {
3066 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3067 if (con2fb_map_boot[i] == idx) {
3074 ret = fbcon_takeover(1);
3076 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3077 if (con2fb_map_boot[i] == idx)
3078 set_con2fb_map(i, idx, 0);
3085 static void fbcon_fb_blanked(struct fb_info *info, int blank)
3087 struct fbcon_ops *ops = info->fbcon_par;
3090 if (!ops || ops->currcon < 0)
3093 vc = vc_cons[ops->currcon].d;
3094 if (vc->vc_mode != KD_TEXT ||
3095 registered_fb[con2fb_map[ops->currcon]] != info)
3098 if (CON_IS_VISIBLE(vc)) {
3102 do_unblank_screen(0);
3104 ops->blank_state = blank;
3107 static void fbcon_new_modelist(struct fb_info *info)
3111 struct fb_var_screeninfo var;
3112 const struct fb_videomode *mode;
3114 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3115 if (registered_fb[con2fb_map[i]] != info)
3117 if (!fb_display[i].mode)
3120 display_to_var(&var, &fb_display[i]);
3121 mode = fb_find_nearest_mode(fb_display[i].mode,
3123 fb_videomode_to_var(&var, mode);
3124 fbcon_set_disp(info, &var, vc->vc_num);
3128 static void fbcon_get_requirement(struct fb_info *info,
3129 struct fb_blit_caps *caps)
3137 for (i = first_fb_vc; i <= last_fb_vc; i++) {
3139 if (vc && vc->vc_mode == KD_TEXT &&
3140 info->node == con2fb_map[i]) {
3142 caps->x |= 1 << (vc->vc_font.width - 1);
3143 caps->y |= 1 << (vc->vc_font.height - 1);
3144 charcnt = (p->userfont) ?
3145 FNTCHARCNT(p->fontdata) : 256;
3146 if (caps->len < charcnt)
3147 caps->len = charcnt;
3151 vc = vc_cons[fg_console].d;
3153 if (vc && vc->vc_mode == KD_TEXT &&
3154 info->node == con2fb_map[fg_console]) {
3155 p = &fb_display[fg_console];
3156 caps->x = 1 << (vc->vc_font.width - 1);
3157 caps->y = 1 << (vc->vc_font.height - 1);
3158 caps->len = (p->userfont) ?
3159 FNTCHARCNT(p->fontdata) : 256;
3164 static int fbcon_event_notify(struct notifier_block *self,
3165 unsigned long action, void *data)
3167 struct fb_event *event = data;
3168 struct fb_info *info = event->info;
3169 struct fb_videomode *mode;
3170 struct fb_con2fbmap *con2fb;
3171 struct fb_blit_caps *caps;
3175 * ignore all events except driver registration and deregistration
3176 * if fbcon is not active
3178 if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
3179 action == FB_EVENT_FB_UNREGISTERED))
3183 case FB_EVENT_SUSPEND:
3184 fbcon_suspended(info);
3186 case FB_EVENT_RESUME:
3187 fbcon_resumed(info);
3189 case FB_EVENT_MODE_CHANGE:
3190 fbcon_modechanged(info);
3192 case FB_EVENT_MODE_CHANGE_ALL:
3193 fbcon_set_all_vcs(info);
3195 case FB_EVENT_MODE_DELETE:
3197 ret = fbcon_mode_deleted(info, mode);
3199 case FB_EVENT_FB_UNBIND:
3201 ret = fbcon_fb_unbind(idx);
3203 case FB_EVENT_FB_REGISTERED:
3204 ret = fbcon_fb_registered(info);
3206 case FB_EVENT_FB_UNREGISTERED:
3207 ret = fbcon_fb_unregistered(info);
3209 case FB_EVENT_SET_CONSOLE_MAP:
3210 con2fb = event->data;
3211 ret = set_con2fb_map(con2fb->console - 1,
3212 con2fb->framebuffer, 1);
3214 case FB_EVENT_GET_CONSOLE_MAP:
3215 con2fb = event->data;
3216 con2fb->framebuffer = con2fb_map[con2fb->console - 1];
3218 case FB_EVENT_BLANK:
3219 fbcon_fb_blanked(info, *(int *)event->data);
3221 case FB_EVENT_NEW_MODELIST:
3222 fbcon_new_modelist(info);
3224 case FB_EVENT_GET_REQ:
3226 fbcon_get_requirement(info, caps);
3234 * The console `switch' structure for the frame buffer based console
3237 static const struct consw fb_con = {
3238 .owner = THIS_MODULE,
3239 .con_startup = fbcon_startup,
3240 .con_init = fbcon_init,
3241 .con_deinit = fbcon_deinit,
3242 .con_clear = fbcon_clear,
3243 .con_putc = fbcon_putc,
3244 .con_putcs = fbcon_putcs,
3245 .con_cursor = fbcon_cursor,
3246 .con_scroll = fbcon_scroll,
3247 .con_bmove = fbcon_bmove,
3248 .con_switch = fbcon_switch,
3249 .con_blank = fbcon_blank,
3250 .con_font_set = fbcon_set_font,
3251 .con_font_get = fbcon_get_font,
3252 .con_font_default = fbcon_set_def_font,
3253 .con_font_copy = fbcon_copy_font,
3254 .con_set_palette = fbcon_set_palette,
3255 .con_scrolldelta = fbcon_scrolldelta,
3256 .con_set_origin = fbcon_set_origin,
3257 .con_invert_region = fbcon_invert_region,
3258 .con_screen_pos = fbcon_screen_pos,
3259 .con_getxy = fbcon_getxy,
3260 .con_resize = fbcon_resize,
3263 static struct notifier_block fbcon_event_notifier = {
3264 .notifier_call = fbcon_event_notify,
3267 static ssize_t store_rotate(struct device *device,
3268 struct device_attribute *attr, const char *buf,
3271 struct fb_info *info;
3275 if (fbcon_has_exited)
3278 acquire_console_sem();
3279 idx = con2fb_map[fg_console];
3281 if (idx == -1 || registered_fb[idx] == NULL)
3284 info = registered_fb[idx];
3285 rotate = simple_strtoul(buf, last, 0);
3286 fbcon_rotate(info, rotate);
3288 release_console_sem();
3292 static ssize_t store_rotate_all(struct device *device,
3293 struct device_attribute *attr,const char *buf,
3296 struct fb_info *info;
3300 if (fbcon_has_exited)
3303 acquire_console_sem();
3304 idx = con2fb_map[fg_console];
3306 if (idx == -1 || registered_fb[idx] == NULL)
3309 info = registered_fb[idx];
3310 rotate = simple_strtoul(buf, last, 0);
3311 fbcon_rotate_all(info, rotate);
3313 release_console_sem();
3317 static ssize_t show_rotate(struct device *device,
3318 struct device_attribute *attr,char *buf)
3320 struct fb_info *info;
3321 int rotate = 0, idx;
3323 if (fbcon_has_exited)
3326 acquire_console_sem();
3327 idx = con2fb_map[fg_console];
3329 if (idx == -1 || registered_fb[idx] == NULL)
3332 info = registered_fb[idx];
3333 rotate = fbcon_get_rotate(info);
3335 release_console_sem();
3336 return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
3339 static ssize_t show_cursor_blink(struct device *device,
3340 struct device_attribute *attr, char *buf)
3342 struct fb_info *info;
3343 struct fbcon_ops *ops;
3344 int idx, blink = -1;
3346 if (fbcon_has_exited)
3349 acquire_console_sem();
3350 idx = con2fb_map[fg_console];
3352 if (idx == -1 || registered_fb[idx] == NULL)
3355 info = registered_fb[idx];
3356 ops = info->fbcon_par;
3361 blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
3363 release_console_sem();
3364 return snprintf(buf, PAGE_SIZE, "%d\n", blink);
3367 static ssize_t store_cursor_blink(struct device *device,
3368 struct device_attribute *attr,
3369 const char *buf, size_t count)
3371 struct fb_info *info;
3375 if (fbcon_has_exited)
3378 acquire_console_sem();
3379 idx = con2fb_map[fg_console];
3381 if (idx == -1 || registered_fb[idx] == NULL)
3384 info = registered_fb[idx];
3386 if (!info->fbcon_par)
3389 blink = simple_strtoul(buf, last, 0);
3392 fbcon_cursor_noblink = 0;
3393 fbcon_add_cursor_timer(info);
3395 fbcon_cursor_noblink = 1;
3396 fbcon_del_cursor_timer(info);
3400 release_console_sem();
3404 static struct device_attribute device_attrs[] = {
3405 __ATTR(rotate, S_IRUGO|S_IWUSR, show_rotate, store_rotate),
3406 __ATTR(rotate_all, S_IWUSR, NULL, store_rotate_all),
3407 __ATTR(cursor_blink, S_IRUGO|S_IWUSR, show_cursor_blink,
3408 store_cursor_blink),
3411 static int fbcon_init_device(void)
3415 fbcon_has_sysfs = 1;
3417 for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
3418 error = device_create_file(fbcon_device, &device_attrs[i]);
3426 device_remove_file(fbcon_device, &device_attrs[i]);
3428 fbcon_has_sysfs = 0;
3434 static void fbcon_start(void)
3436 if (num_registered_fb) {
3439 acquire_console_sem();
3441 for (i = 0; i < FB_MAX; i++) {
3442 if (registered_fb[i] != NULL) {
3448 release_console_sem();
3453 static void fbcon_exit(void)
3455 struct fb_info *info;
3458 if (fbcon_has_exited)
3461 kfree((void *)softback_buf);
3464 for (i = 0; i < FB_MAX; i++) {
3468 info = registered_fb[i];
3473 pending = cancel_work_sync(&info->queue);
3474 DPRINTK("fbcon: %s pending work\n", (pending ? "canceled" :
3477 for (j = first_fb_vc; j <= last_fb_vc; j++) {
3478 if (con2fb_map[j] == i)
3483 if (info->fbops->fb_release)
3484 info->fbops->fb_release(info, 0);
3485 module_put(info->fbops->owner);
3487 if (info->fbcon_par) {
3488 struct fbcon_ops *ops = info->fbcon_par;
3490 fbcon_del_cursor_timer(info);
3491 kfree(ops->cursor_src);
3492 kfree(info->fbcon_par);
3493 info->fbcon_par = NULL;
3496 if (info->queue.func == fb_flashcursor)
3497 info->queue.func = NULL;
3501 fbcon_has_exited = 1;
3504 static int __init fb_console_init(void)
3508 acquire_console_sem();
3509 fb_register_client(&fbcon_event_notifier);
3510 fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
3513 if (IS_ERR(fbcon_device)) {
3514 printk(KERN_WARNING "Unable to create device "
3515 "for fbcon; errno = %ld\n",
3516 PTR_ERR(fbcon_device));
3517 fbcon_device = NULL;
3519 fbcon_init_device();
3521 for (i = 0; i < MAX_NR_CONSOLES; i++)
3524 release_console_sem();
3529 module_init(fb_console_init);
3533 static void __exit fbcon_deinit_device(void)
3537 if (fbcon_has_sysfs) {
3538 for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
3539 device_remove_file(fbcon_device, &device_attrs[i]);
3541 fbcon_has_sysfs = 0;
3545 static void __exit fb_console_exit(void)
3547 acquire_console_sem();
3548 fb_unregister_client(&fbcon_event_notifier);
3549 fbcon_deinit_device();
3550 device_destroy(fb_class, MKDEV(0, 0));
3552 release_console_sem();
3553 unregister_con_driver(&fb_con);
3556 module_exit(fb_console_exit);
3560 MODULE_LICENSE("GPL");