2 * linux/drivers/video/fbmem.c
4 * Copyright (C) 1994 Martin Schaller
6 * 2001 - Documented with DocBook
7 * - Brad Douglas <brad@neruo.com>
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file COPYING in the main directory of this archive
14 #include <linux/module.h>
16 #include <linux/compat.h>
17 #include <linux/types.h>
18 #include <linux/errno.h>
19 #include <linux/kernel.h>
20 #include <linux/major.h>
21 #include <linux/slab.h>
23 #include <linux/mman.h>
25 #include <linux/init.h>
26 #include <linux/linux_logo.h>
27 #include <linux/proc_fs.h>
28 #include <linux/seq_file.h>
29 #include <linux/console.h>
30 #include <linux/kmod.h>
31 #include <linux/err.h>
32 #include <linux/device.h>
33 #include <linux/efi.h>
40 * Frame buffer device initialization and setup routines
43 #define FBPIXMAPSIZE (1024 * 8)
45 static DEFINE_MUTEX(registration_lock);
46 struct fb_info *registered_fb[FB_MAX] __read_mostly;
47 int num_registered_fb __read_mostly;
49 static struct fb_info *get_fb_info(unsigned int idx)
51 struct fb_info *fb_info;
54 return ERR_PTR(-ENODEV);
56 mutex_lock(®istration_lock);
57 fb_info = registered_fb[idx];
59 atomic_inc(&fb_info->count);
60 mutex_unlock(®istration_lock);
65 static void put_fb_info(struct fb_info *fb_info)
67 if (!atomic_dec_and_test(&fb_info->count))
69 if (fb_info->fbops->fb_destroy)
70 fb_info->fbops->fb_destroy(fb_info);
73 int lock_fb_info(struct fb_info *info)
75 mutex_lock(&info->lock);
77 mutex_unlock(&info->lock);
82 EXPORT_SYMBOL(lock_fb_info);
88 int fb_get_color_depth(struct fb_var_screeninfo *var,
89 struct fb_fix_screeninfo *fix)
93 if (fix->visual == FB_VISUAL_MONO01 ||
94 fix->visual == FB_VISUAL_MONO10)
97 if (var->green.length == var->blue.length &&
98 var->green.length == var->red.length &&
99 var->green.offset == var->blue.offset &&
100 var->green.offset == var->red.offset)
101 depth = var->green.length;
103 depth = var->green.length + var->red.length +
109 EXPORT_SYMBOL(fb_get_color_depth);
112 * Data padding functions.
114 void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height)
116 __fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch, height);
118 EXPORT_SYMBOL(fb_pad_aligned_buffer);
120 void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, u32 height,
121 u32 shift_high, u32 shift_low, u32 mod)
123 u8 mask = (u8) (0xfff << shift_high), tmp;
126 for (i = height; i--; ) {
127 for (j = 0; j < idx; j++) {
130 tmp |= *src >> shift_low;
132 tmp = *src << shift_high;
138 tmp |= *src >> shift_low;
140 if (shift_high < mod) {
141 tmp = *src << shift_high;
148 EXPORT_SYMBOL(fb_pad_unaligned_buffer);
151 * we need to lock this section since fb_cursor
152 * may use fb_imageblit()
154 char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size)
156 u32 align = buf->buf_align - 1, offset;
157 char *addr = buf->addr;
159 /* If IO mapped, we need to sync before access, no sharing of
162 if (buf->flags & FB_PIXMAP_IO) {
163 if (info->fbops->fb_sync && (buf->flags & FB_PIXMAP_SYNC))
164 info->fbops->fb_sync(info);
168 /* See if we fit in the remaining pixmap space */
169 offset = buf->offset + align;
171 if (offset + size > buf->size) {
172 /* We do not fit. In order to be able to re-use the buffer,
173 * we must ensure no asynchronous DMA'ing or whatever operation
174 * is in progress, we sync for that.
176 if (info->fbops->fb_sync && (buf->flags & FB_PIXMAP_SYNC))
177 info->fbops->fb_sync(info);
180 buf->offset = offset + size;
188 static inline unsigned safe_shift(unsigned d, int n)
190 return n < 0 ? d >> -n : d << n;
193 static void fb_set_logocmap(struct fb_info *info,
194 const struct linux_logo *logo)
196 struct fb_cmap palette_cmap;
197 u16 palette_green[16];
198 u16 palette_blue[16];
201 const unsigned char *clut = logo->clut;
203 palette_cmap.start = 0;
204 palette_cmap.len = 16;
205 palette_cmap.red = palette_red;
206 palette_cmap.green = palette_green;
207 palette_cmap.blue = palette_blue;
208 palette_cmap.transp = NULL;
210 for (i = 0; i < logo->clutsize; i += n) {
211 n = logo->clutsize - i;
212 /* palette_cmap provides space for only 16 colors at once */
215 palette_cmap.start = 32 + i;
216 palette_cmap.len = n;
217 for (j = 0; j < n; ++j) {
218 palette_cmap.red[j] = clut[0] << 8 | clut[0];
219 palette_cmap.green[j] = clut[1] << 8 | clut[1];
220 palette_cmap.blue[j] = clut[2] << 8 | clut[2];
223 fb_set_cmap(&palette_cmap, info);
227 static void fb_set_logo_truepalette(struct fb_info *info,
228 const struct linux_logo *logo,
231 static const unsigned char mask[] = { 0,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff };
232 unsigned char redmask, greenmask, bluemask;
233 int redshift, greenshift, blueshift;
235 const unsigned char *clut = logo->clut;
238 * We have to create a temporary palette since console palette is only
241 /* Bug: Doesn't obey msb_right ... (who needs that?) */
242 redmask = mask[info->var.red.length < 8 ? info->var.red.length : 8];
243 greenmask = mask[info->var.green.length < 8 ? info->var.green.length : 8];
244 bluemask = mask[info->var.blue.length < 8 ? info->var.blue.length : 8];
245 redshift = info->var.red.offset - (8 - info->var.red.length);
246 greenshift = info->var.green.offset - (8 - info->var.green.length);
247 blueshift = info->var.blue.offset - (8 - info->var.blue.length);
249 for ( i = 0; i < logo->clutsize; i++) {
250 palette[i+32] = (safe_shift((clut[0] & redmask), redshift) |
251 safe_shift((clut[1] & greenmask), greenshift) |
252 safe_shift((clut[2] & bluemask), blueshift));
257 static void fb_set_logo_directpalette(struct fb_info *info,
258 const struct linux_logo *logo,
261 int redshift, greenshift, blueshift;
264 redshift = info->var.red.offset;
265 greenshift = info->var.green.offset;
266 blueshift = info->var.blue.offset;
268 for (i = 32; i < 32 + logo->clutsize; i++)
269 palette[i] = i << redshift | i << greenshift | i << blueshift;
272 static void fb_set_logo(struct fb_info *info,
273 const struct linux_logo *logo, u8 *dst,
277 const u8 *src = logo->data;
278 u8 xor = (info->fix.visual == FB_VISUAL_MONO01) ? 0xff : 0;
281 switch (fb_get_color_depth(&info->var, &info->fix)) {
293 if (info->fix.visual == FB_VISUAL_MONO01 ||
294 info->fix.visual == FB_VISUAL_MONO10)
295 fg = ~((u8) (0xfff << info->var.green.length));
299 for (i = 0; i < logo->height; i++)
300 for (j = 0; j < logo->width; src++) {
303 if (j < logo->width) {
304 *dst++ = *src & 0x0f;
310 for (i = 0; i < logo->height; i++) {
311 for (j = 0; j < logo->width; src++) {
313 for (k = 7; k >= 0; k--) {
314 *dst++ = ((d >> k) & 1) ? fg : 0;
324 * Three (3) kinds of logo maps exist. linux_logo_clut224 (>16 colors),
325 * linux_logo_vga16 (16 colors) and linux_logo_mono (2 colors). Depending on
326 * the visual format and color depth of the framebuffer, the DAC, the
327 * pseudo_palette, and the logo data will be adjusted accordingly.
329 * Case 1 - linux_logo_clut224:
330 * Color exceeds the number of console colors (16), thus we set the hardware DAC
331 * using fb_set_cmap() appropriately. The "needs_cmapreset" flag will be set.
333 * For visuals that require color info from the pseudo_palette, we also construct
334 * one for temporary use. The "needs_directpalette" or "needs_truepalette" flags
337 * Case 2 - linux_logo_vga16:
338 * The number of colors just matches the console colors, thus there is no need
339 * to set the DAC or the pseudo_palette. However, the bitmap is packed, ie,
340 * each byte contains color information for two pixels (upper and lower nibble).
341 * To be consistent with fb_imageblit() usage, we therefore separate the two
342 * nibbles into separate bytes. The "depth" flag will be set to 4.
344 * Case 3 - linux_logo_mono:
345 * This is similar with Case 2. Each byte contains information for 8 pixels.
346 * We isolate each bit and expand each into a byte. The "depth" flag will
349 static struct logo_data {
351 int needs_directpalette;
352 int needs_truepalette;
354 const struct linux_logo *logo;
355 } fb_logo __read_mostly;
357 void fb_show_charge_logo(struct linux_logo *logo)
363 static void fb_rotate_logo_ud(const u8 *in, u8 *out, u32 width, u32 height)
365 u32 size = width * height, i;
369 for (i = size; i--; )
373 static void fb_rotate_logo_cw(const u8 *in, u8 *out, u32 width, u32 height)
375 int i, j, h = height - 1;
377 for (i = 0; i < height; i++)
378 for (j = 0; j < width; j++)
379 out[height * j + h - i] = *in++;
382 static void fb_rotate_logo_ccw(const u8 *in, u8 *out, u32 width, u32 height)
384 int i, j, w = width - 1;
386 for (i = 0; i < height; i++)
387 for (j = 0; j < width; j++)
388 out[height * (w - j) + i] = *in++;
391 static void fb_rotate_logo(struct fb_info *info, u8 *dst,
392 struct fb_image *image, int rotate)
396 if (rotate == FB_ROTATE_UD) {
397 fb_rotate_logo_ud(image->data, dst, image->width,
399 image->dx = info->var.xres - image->width - image->dx;
400 image->dy = info->var.yres - image->height - image->dy;
401 } else if (rotate == FB_ROTATE_CW) {
402 fb_rotate_logo_cw(image->data, dst, image->width,
405 image->width = image->height;
408 image->dy = image->dx;
409 image->dx = info->var.xres - image->width - tmp;
410 } else if (rotate == FB_ROTATE_CCW) {
411 fb_rotate_logo_ccw(image->data, dst, image->width,
414 image->width = image->height;
417 image->dx = image->dy;
418 image->dy = info->var.yres - image->height - tmp;
424 static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
425 int rotate, unsigned int num)
429 if (rotate == FB_ROTATE_UR) {
431 x < num && image->dx + image->width <= info->var.xres;
433 info->fbops->fb_imageblit(info, image);
434 image->dx += image->width + 8;
436 } else if (rotate == FB_ROTATE_UD) {
437 for (x = 0; x < num && image->dx >= 0; x++) {
438 info->fbops->fb_imageblit(info, image);
439 image->dx -= image->width + 8;
441 } else if (rotate == FB_ROTATE_CW) {
443 x < num && image->dy + image->height <= info->var.yres;
445 info->fbops->fb_imageblit(info, image);
446 image->dy += image->height + 8;
448 } else if (rotate == FB_ROTATE_CCW) {
449 for (x = 0; x < num && image->dy >= 0; x++) {
450 info->fbops->fb_imageblit(info, image);
451 image->dy -= image->height + 8;
456 static int fb_show_logo_line(struct fb_info *info, int rotate,
457 const struct linux_logo *logo, int y,
460 u32 *palette = NULL, *saved_pseudo_palette = NULL;
461 unsigned char *logo_new = NULL, *logo_rotate = NULL;
462 struct fb_image image;
464 /* Return if the frame buffer is not mapped or suspended */
465 if (logo == NULL || info->state != FBINFO_STATE_RUNNING ||
466 info->flags & FBINFO_MODULE)
470 image.data = logo->data;
472 if (fb_logo.needs_cmapreset)
473 fb_set_logocmap(info, logo);
475 if (fb_logo.needs_truepalette ||
476 fb_logo.needs_directpalette) {
477 palette = kmalloc(256 * 4, GFP_KERNEL);
481 if (fb_logo.needs_truepalette)
482 fb_set_logo_truepalette(info, logo, palette);
484 fb_set_logo_directpalette(info, logo, palette);
486 saved_pseudo_palette = info->pseudo_palette;
487 info->pseudo_palette = palette;
490 if (fb_logo.depth <= 4) {
491 logo_new = kmalloc(logo->width * logo->height, GFP_KERNEL);
492 if (logo_new == NULL) {
494 if (saved_pseudo_palette)
495 info->pseudo_palette = saved_pseudo_palette;
498 image.data = logo_new;
499 fb_set_logo(info, logo, logo_new, fb_logo.depth);
504 image.width = logo->width;
505 image.height = logo->height;
508 logo_rotate = kmalloc(logo->width *
509 logo->height, GFP_KERNEL);
511 fb_rotate_logo(info, logo_rotate, &image, rotate);
514 fb_do_show_logo(info, &image, rotate, n);
517 if (saved_pseudo_palette != NULL)
518 info->pseudo_palette = saved_pseudo_palette;
525 #ifdef CONFIG_FB_LOGO_EXTRA
527 #define FB_LOGO_EX_NUM_MAX 10
528 static struct logo_data_extra {
529 const struct linux_logo *logo;
531 } fb_logo_ex[FB_LOGO_EX_NUM_MAX];
532 static unsigned int fb_logo_ex_num;
534 void fb_append_extra_logo(const struct linux_logo *logo, unsigned int n)
536 if (!n || fb_logo_ex_num == FB_LOGO_EX_NUM_MAX)
539 fb_logo_ex[fb_logo_ex_num].logo = logo;
540 fb_logo_ex[fb_logo_ex_num].n = n;
544 static int fb_prepare_extra_logos(struct fb_info *info, unsigned int height,
549 /* FIXME: logo_ex supports only truecolor fb. */
550 if (info->fix.visual != FB_VISUAL_TRUECOLOR)
553 for (i = 0; i < fb_logo_ex_num; i++) {
554 if (fb_logo_ex[i].logo->type != fb_logo.logo->type) {
555 fb_logo_ex[i].logo = NULL;
558 height += fb_logo_ex[i].logo->height;
560 height -= fb_logo_ex[i].logo->height;
568 static int fb_show_extra_logos(struct fb_info *info, int y, int rotate)
572 for (i = 0; i < fb_logo_ex_num; i++)
573 y += fb_show_logo_line(info, rotate,
574 fb_logo_ex[i].logo, y, fb_logo_ex[i].n);
579 #else /* !CONFIG_FB_LOGO_EXTRA */
581 static inline int fb_prepare_extra_logos(struct fb_info *info,
588 static inline int fb_show_extra_logos(struct fb_info *info, int y, int rotate)
593 #endif /* CONFIG_FB_LOGO_EXTRA */
596 int fb_prepare_logo(struct fb_info *info, int rotate)
598 int depth = fb_get_color_depth(&info->var, &info->fix);
601 memset(&fb_logo, 0, sizeof(struct logo_data));
603 if (info->flags & FBINFO_MISC_TILEBLITTING ||
604 info->flags & FBINFO_MODULE)
607 if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
608 depth = info->var.blue.length;
609 if (info->var.red.length < depth)
610 depth = info->var.red.length;
611 if (info->var.green.length < depth)
612 depth = info->var.green.length;
615 if (info->fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR && depth > 4) {
616 /* assume console colormap */
620 /* Return if no suitable logo was found */
621 fb_logo.logo = fb_find_logo(depth);
627 if (rotate == FB_ROTATE_UR || rotate == FB_ROTATE_UD)
628 yres = info->var.yres;
630 yres = info->var.xres;
632 if (fb_logo.logo->height > yres) {
637 /* What depth we asked for might be different from what we get */
638 if (fb_logo.logo->type == LINUX_LOGO_CLUT224)
640 else if (fb_logo.logo->type == LINUX_LOGO_VGA16)
646 if (fb_logo.depth > 4 && depth > 4) {
647 switch (info->fix.visual) {
648 case FB_VISUAL_TRUECOLOR:
649 fb_logo.needs_truepalette = 1;
651 case FB_VISUAL_DIRECTCOLOR:
652 fb_logo.needs_directpalette = 1;
653 fb_logo.needs_cmapreset = 1;
655 case FB_VISUAL_PSEUDOCOLOR:
656 fb_logo.needs_cmapreset = 1;
661 return fb_prepare_extra_logos(info, fb_logo.logo->height, yres);
664 int fb_show_logo(struct fb_info *info, int rotate)
668 y = fb_show_logo_line(info, rotate, fb_logo.logo, 0,
670 y = fb_show_extra_logos(info, y, rotate);
675 int fb_prepare_logo(struct fb_info *info, int rotate) { return 0; }
676 int fb_show_logo(struct fb_info *info, int rotate) { return 0; }
677 #endif /* CONFIG_LOGO */
679 static void *fb_seq_start(struct seq_file *m, loff_t *pos)
681 mutex_lock(®istration_lock);
682 return (*pos < FB_MAX) ? pos : NULL;
685 static void *fb_seq_next(struct seq_file *m, void *v, loff_t *pos)
688 return (*pos < FB_MAX) ? pos : NULL;
691 static void fb_seq_stop(struct seq_file *m, void *v)
693 mutex_unlock(®istration_lock);
696 static int fb_seq_show(struct seq_file *m, void *v)
698 int i = *(loff_t *)v;
699 struct fb_info *fi = registered_fb[i];
702 seq_printf(m, "%d %s\n", fi->node, fi->fix.id);
706 static const struct seq_operations proc_fb_seq_ops = {
707 .start = fb_seq_start,
713 static int proc_fb_open(struct inode *inode, struct file *file)
715 return seq_open(file, &proc_fb_seq_ops);
718 static const struct file_operations fb_proc_fops = {
719 .owner = THIS_MODULE,
720 .open = proc_fb_open,
723 .release = seq_release,
727 * We hold a reference to the fb_info in file->private_data,
728 * but if the current registered fb has changed, we don't
729 * actually want to use it.
731 * So look up the fb_info using the inode minor number,
732 * and just verify it against the reference we have.
734 static struct fb_info *file_fb_info(struct file *file)
736 struct inode *inode = file->f_path.dentry->d_inode;
737 int fbidx = iminor(inode);
738 struct fb_info *info = registered_fb[fbidx];
740 if (info != file->private_data)
746 fb_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
748 unsigned long p = *ppos;
749 struct fb_info *info = file_fb_info(file);
752 int c, cnt = 0, err = 0;
753 unsigned long total_size;
755 if (!info || ! info->screen_base)
758 if (info->state != FBINFO_STATE_RUNNING)
761 if (info->fbops->fb_read)
762 return info->fbops->fb_read(info, buf, count, ppos);
764 total_size = info->screen_size;
767 total_size = info->fix.smem_len;
772 if (count >= total_size)
775 if (count + p > total_size)
776 count = total_size - p;
778 buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count,
783 src = (u8 __iomem *) (info->screen_base + p);
785 if (info->fbops->fb_sync)
786 info->fbops->fb_sync(info);
789 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
791 fb_memcpy_fromfb(dst, src, c);
795 if (copy_to_user(buf, buffer, c)) {
807 return (err) ? err : cnt;
811 fb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
813 unsigned long p = *ppos;
814 struct fb_info *info = file_fb_info(file);
817 int c, cnt = 0, err = 0;
818 unsigned long total_size;
820 if (!info || !info->screen_base)
823 if (info->state != FBINFO_STATE_RUNNING)
826 if (info->fbops->fb_write)
827 return info->fbops->fb_write(info, buf, count, ppos);
829 total_size = info->screen_size;
832 total_size = info->fix.smem_len;
837 if (count > total_size) {
842 if (count + p > total_size) {
846 count = total_size - p;
849 buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count,
854 dst = (u8 __iomem *) (info->screen_base + p);
856 if (info->fbops->fb_sync)
857 info->fbops->fb_sync(info);
860 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
863 if (copy_from_user(src, buf, c)) {
868 fb_memcpy_tofb(dst, src, c);
879 return (cnt) ? cnt : err;
883 fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var)
885 struct fb_fix_screeninfo *fix = &info->fix;
886 unsigned int yres = info->var.yres;
889 if (var->yoffset > 0) {
890 if (var->vmode & FB_VMODE_YWRAP) {
891 if (!fix->ywrapstep || (var->yoffset % fix->ywrapstep))
895 } else if (!fix->ypanstep || (var->yoffset % fix->ypanstep))
899 if (var->xoffset > 0 && (!fix->xpanstep ||
900 (var->xoffset % fix->xpanstep)))
903 if (err || !info->fbops->fb_pan_display ||
904 var->yoffset > info->var.yres_virtual - yres ||
905 var->xoffset > info->var.xres_virtual - info->var.xres)
908 if ((err = info->fbops->fb_pan_display(var, info)))
910 info->var.xoffset = var->xoffset;
911 info->var.yoffset = var->yoffset;
912 if (var->vmode & FB_VMODE_YWRAP)
913 info->var.vmode |= FB_VMODE_YWRAP;
915 info->var.vmode &= ~FB_VMODE_YWRAP;
919 static int fb_check_caps(struct fb_info *info, struct fb_var_screeninfo *var,
922 struct fb_event event;
923 struct fb_blit_caps caps, fbcaps;
926 memset(&caps, 0, sizeof(caps));
927 memset(&fbcaps, 0, sizeof(fbcaps));
928 caps.flags = (activate & FB_ACTIVATE_ALL) ? 1 : 0;
931 fb_notifier_call_chain(FB_EVENT_GET_REQ, &event);
932 info->fbops->fb_get_caps(info, &fbcaps, var);
934 if (((fbcaps.x ^ caps.x) & caps.x) ||
935 ((fbcaps.y ^ caps.y) & caps.y) ||
936 (fbcaps.len < caps.len))
943 fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
945 int flags = info->flags;
948 if (var->activate & FB_ACTIVATE_INV_MODE) {
949 struct fb_videomode mode1, mode2;
951 fb_var_to_videomode(&mode1, var);
952 fb_var_to_videomode(&mode2, &info->var);
953 /* make sure we don't delete the videomode of current var */
954 ret = fb_mode_is_equal(&mode1, &mode2);
957 struct fb_event event;
961 ret = fb_notifier_call_chain(FB_EVENT_MODE_DELETE, &event);
965 fb_delete_videomode(&mode1, &info->modelist);
968 ret = (ret) ? -EINVAL : 0;
972 if ((var->activate & FB_ACTIVATE_FORCE) ||
973 memcmp(&info->var, var, sizeof(struct fb_var_screeninfo))) {
974 u32 activate = var->activate;
976 if (!info->fbops->fb_check_var) {
981 ret = info->fbops->fb_check_var(var, info);
986 if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
987 struct fb_var_screeninfo old_var;
988 struct fb_videomode mode;
990 if (info->fbops->fb_get_caps) {
991 ret = fb_check_caps(info, var, activate);
1000 if (info->fbops->fb_set_par) {
1001 ret = info->fbops->fb_set_par(info);
1004 info->var = old_var;
1005 printk(KERN_WARNING "detected "
1006 "fb_set_par error, "
1007 "error code: %d\n", ret);
1012 fb_pan_display(info, &info->var);
1013 fb_set_cmap(&info->cmap, info);
1014 fb_var_to_videomode(&mode, &info->var);
1016 if (info->modelist.prev && info->modelist.next &&
1017 !list_empty(&info->modelist))
1018 ret = fb_add_videomode(&mode, &info->modelist);
1020 if (!ret && (flags & FBINFO_MISC_USEREVENT)) {
1021 struct fb_event event;
1022 int evnt = (activate & FB_ACTIVATE_ALL) ?
1023 FB_EVENT_MODE_CHANGE_ALL :
1024 FB_EVENT_MODE_CHANGE;
1026 info->flags &= ~FBINFO_MISC_USEREVENT;
1029 fb_notifier_call_chain(evnt, &event);
1039 fb_blank(struct fb_info *info, int blank)
1043 if (blank > FB_BLANK_POWERDOWN)
1044 blank = FB_BLANK_POWERDOWN;
1046 if (info->fbops->fb_blank)
1047 ret = info->fbops->fb_blank(blank, info);
1050 struct fb_event event;
1053 event.data = ␣
1054 fb_notifier_call_chain(FB_EVENT_BLANK, &event);
1061 static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
1065 struct fb_var_screeninfo var;
1066 struct fb_fix_screeninfo fix;
1067 struct fb_con2fbmap con2fb;
1068 struct fb_cmap cmap_from;
1069 struct fb_cmap_user cmap;
1070 struct fb_event event;
1071 void __user *argp = (void __user *)arg;
1075 case FBIOGET_VSCREENINFO:
1076 if (!lock_fb_info(info))
1079 unlock_fb_info(info);
1081 ret = copy_to_user(argp, &var, sizeof(var)) ? -EFAULT : 0;
1083 case FBIOPUT_VSCREENINFO:
1084 if (copy_from_user(&var, argp, sizeof(var)))
1086 if (!lock_fb_info(info))
1089 info->flags |= FBINFO_MISC_USEREVENT;
1090 ret = fb_set_var(info, &var);
1091 info->flags &= ~FBINFO_MISC_USEREVENT;
1093 unlock_fb_info(info);
1094 if (!ret && copy_to_user(argp, &var, sizeof(var)))
1097 case FBIOGET_FSCREENINFO:
1098 if (!lock_fb_info(info))
1101 unlock_fb_info(info);
1103 ret = copy_to_user(argp, &fix, sizeof(fix)) ? -EFAULT : 0;
1106 if (copy_from_user(&cmap, argp, sizeof(cmap)))
1108 ret = fb_set_user_cmap(&cmap, info);
1111 if (copy_from_user(&cmap, argp, sizeof(cmap)))
1113 if (!lock_fb_info(info))
1115 cmap_from = info->cmap;
1116 unlock_fb_info(info);
1117 ret = fb_cmap_to_user(&cmap_from, &cmap);
1119 case FBIOPAN_DISPLAY:
1120 if (copy_from_user(&var, argp, sizeof(var)))
1122 if (!lock_fb_info(info))
1125 ret = fb_pan_display(info, &var);
1127 unlock_fb_info(info);
1128 if (ret == 0 && copy_to_user(argp, &var, sizeof(var)))
1134 case FBIOGET_CON2FBMAP:
1135 if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
1137 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
1139 con2fb.framebuffer = -1;
1140 event.data = &con2fb;
1141 if (!lock_fb_info(info))
1144 fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event);
1145 unlock_fb_info(info);
1146 ret = copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0;
1148 case FBIOPUT_CON2FBMAP:
1149 if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
1151 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
1153 if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX)
1155 if (!registered_fb[con2fb.framebuffer])
1156 request_module("fb%d", con2fb.framebuffer);
1157 if (!registered_fb[con2fb.framebuffer]) {
1161 event.data = &con2fb;
1162 if (!lock_fb_info(info))
1165 ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, &event);
1166 unlock_fb_info(info);
1169 if (!lock_fb_info(info))
1172 info->flags |= FBINFO_MISC_USEREVENT;
1173 ret = fb_blank(info, arg);
1174 info->flags &= ~FBINFO_MISC_USEREVENT;
1176 unlock_fb_info(info);
1179 if (!lock_fb_info(info))
1183 ret = fb->fb_ioctl(info, cmd, arg);
1186 unlock_fb_info(info);
1191 static long fb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1193 struct fb_info *info = file_fb_info(file);
1197 return do_fb_ioctl(info, cmd, arg);
1200 #ifdef CONFIG_COMPAT
1201 struct fb_fix_screeninfo32 {
1203 compat_caddr_t smem_start;
1212 compat_caddr_t mmio_start;
1222 compat_caddr_t green;
1223 compat_caddr_t blue;
1224 compat_caddr_t transp;
1227 static int fb_getput_cmap(struct fb_info *info, unsigned int cmd,
1230 struct fb_cmap_user __user *cmap;
1231 struct fb_cmap32 __user *cmap32;
1235 cmap = compat_alloc_user_space(sizeof(*cmap));
1236 cmap32 = compat_ptr(arg);
1238 if (copy_in_user(&cmap->start, &cmap32->start, 2 * sizeof(__u32)))
1241 if (get_user(data, &cmap32->red) ||
1242 put_user(compat_ptr(data), &cmap->red) ||
1243 get_user(data, &cmap32->green) ||
1244 put_user(compat_ptr(data), &cmap->green) ||
1245 get_user(data, &cmap32->blue) ||
1246 put_user(compat_ptr(data), &cmap->blue) ||
1247 get_user(data, &cmap32->transp) ||
1248 put_user(compat_ptr(data), &cmap->transp))
1251 err = do_fb_ioctl(info, cmd, (unsigned long) cmap);
1254 if (copy_in_user(&cmap32->start,
1262 static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix,
1263 struct fb_fix_screeninfo32 __user *fix32)
1268 err = copy_to_user(&fix32->id, &fix->id, sizeof(fix32->id));
1270 data = (__u32) (unsigned long) fix->smem_start;
1271 err |= put_user(data, &fix32->smem_start);
1273 err |= put_user(fix->smem_len, &fix32->smem_len);
1274 err |= put_user(fix->type, &fix32->type);
1275 err |= put_user(fix->type_aux, &fix32->type_aux);
1276 err |= put_user(fix->visual, &fix32->visual);
1277 err |= put_user(fix->xpanstep, &fix32->xpanstep);
1278 err |= put_user(fix->ypanstep, &fix32->ypanstep);
1279 err |= put_user(fix->ywrapstep, &fix32->ywrapstep);
1280 err |= put_user(fix->line_length, &fix32->line_length);
1282 data = (__u32) (unsigned long) fix->mmio_start;
1283 err |= put_user(data, &fix32->mmio_start);
1285 err |= put_user(fix->mmio_len, &fix32->mmio_len);
1286 err |= put_user(fix->accel, &fix32->accel);
1287 err |= copy_to_user(fix32->reserved, fix->reserved,
1288 sizeof(fix->reserved));
1293 static int fb_get_fscreeninfo(struct fb_info *info, unsigned int cmd,
1296 mm_segment_t old_fs;
1297 struct fb_fix_screeninfo fix;
1298 struct fb_fix_screeninfo32 __user *fix32;
1301 fix32 = compat_ptr(arg);
1305 err = do_fb_ioctl(info, cmd, (unsigned long) &fix);
1309 err = do_fscreeninfo_to_user(&fix, fix32);
1314 static long fb_compat_ioctl(struct file *file, unsigned int cmd,
1317 struct fb_info *info = file_fb_info(file);
1319 long ret = -ENOIOCTLCMD;
1325 case FBIOGET_VSCREENINFO:
1326 case FBIOPUT_VSCREENINFO:
1327 case FBIOPAN_DISPLAY:
1328 case FBIOGET_CON2FBMAP:
1329 case FBIOPUT_CON2FBMAP:
1330 arg = (unsigned long) compat_ptr(arg);
1332 ret = do_fb_ioctl(info, cmd, arg);
1335 case FBIOGET_FSCREENINFO:
1336 ret = fb_get_fscreeninfo(info, cmd, arg);
1341 ret = fb_getput_cmap(info, cmd, arg);
1345 if (fb->fb_compat_ioctl)
1346 ret = fb->fb_compat_ioctl(info, cmd, arg);
1354 fb_mmap(struct file *file, struct vm_area_struct * vma)
1356 struct fb_info *info = file_fb_info(file);
1359 unsigned long start;
1364 if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1366 off = vma->vm_pgoff << PAGE_SHIFT;
1370 mutex_lock(&info->mm_lock);
1373 res = fb->fb_mmap(info, vma);
1374 mutex_unlock(&info->mm_lock);
1378 /* frame buffer memory */
1379 start = info->fix.smem_start;
1380 len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.smem_len);
1382 /* memory mapped io */
1384 if (info->var.accel_flags) {
1385 mutex_unlock(&info->mm_lock);
1388 start = info->fix.mmio_start;
1389 len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.mmio_len);
1391 mutex_unlock(&info->mm_lock);
1393 if ((vma->vm_end - vma->vm_start + off) > len)
1396 vma->vm_pgoff = off >> PAGE_SHIFT;
1397 /* This is an IO map - tell maydump to skip this VMA */
1398 vma->vm_flags |= VM_IO | VM_RESERVED;
1399 vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
1400 fb_pgprotect(file, vma, off);
1401 if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1402 vma->vm_end - vma->vm_start, vma->vm_page_prot))
1408 fb_open(struct inode *inode, struct file *file)
1409 __acquires(&info->lock)
1410 __releases(&info->lock)
1412 int fbidx = iminor(inode);
1413 struct fb_info *info;
1416 info = get_fb_info(fbidx);
1418 request_module("fb%d", fbidx);
1419 info = get_fb_info(fbidx);
1424 return PTR_ERR(info);
1426 mutex_lock(&info->lock);
1427 if (!try_module_get(info->fbops->owner)) {
1431 file->private_data = info;
1432 if (info->fbops->fb_open) {
1433 res = info->fbops->fb_open(info,1);
1435 module_put(info->fbops->owner);
1437 #ifdef CONFIG_FB_DEFERRED_IO
1439 fb_deferred_io_open(info, inode, file);
1442 mutex_unlock(&info->lock);
1449 fb_release(struct inode *inode, struct file *file)
1450 __acquires(&info->lock)
1451 __releases(&info->lock)
1453 struct fb_info * const info = file->private_data;
1455 mutex_lock(&info->lock);
1456 if (info->fbops->fb_release)
1457 info->fbops->fb_release(info,1);
1458 module_put(info->fbops->owner);
1459 mutex_unlock(&info->lock);
1464 static const struct file_operations fb_fops = {
1465 .owner = THIS_MODULE,
1468 .unlocked_ioctl = fb_ioctl,
1469 #ifdef CONFIG_COMPAT
1470 .compat_ioctl = fb_compat_ioctl,
1474 .release = fb_release,
1475 #ifdef HAVE_ARCH_FB_UNMAPPED_AREA
1476 .get_unmapped_area = get_fb_unmapped_area,
1478 #ifdef CONFIG_FB_DEFERRED_IO
1479 .fsync = fb_deferred_io_fsync,
1481 .llseek = default_llseek,
1484 struct class *fb_class;
1485 EXPORT_SYMBOL(fb_class);
1487 static int fb_check_foreignness(struct fb_info *fi)
1489 const bool foreign_endian = fi->flags & FBINFO_FOREIGN_ENDIAN;
1491 fi->flags &= ~FBINFO_FOREIGN_ENDIAN;
1494 fi->flags |= foreign_endian ? 0 : FBINFO_BE_MATH;
1496 fi->flags |= foreign_endian ? FBINFO_BE_MATH : 0;
1497 #endif /* __BIG_ENDIAN */
1499 if (fi->flags & FBINFO_BE_MATH && !fb_be_math(fi)) {
1500 pr_err("%s: enable CONFIG_FB_BIG_ENDIAN to "
1501 "support this framebuffer\n", fi->fix.id);
1503 } else if (!(fi->flags & FBINFO_BE_MATH) && fb_be_math(fi)) {
1504 pr_err("%s: enable CONFIG_FB_LITTLE_ENDIAN to "
1505 "support this framebuffer\n", fi->fix.id);
1512 static bool apertures_overlap(struct aperture *gen, struct aperture *hw)
1514 /* is the generic aperture base the same as the HW one */
1515 if (gen->base == hw->base)
1517 /* is the generic aperture base inside the hw base->hw base+size */
1518 if (gen->base > hw->base && gen->base < hw->base + hw->size)
1523 static bool fb_do_apertures_overlap(struct apertures_struct *gena,
1524 struct apertures_struct *hwa)
1530 for (i = 0; i < hwa->count; ++i) {
1531 struct aperture *h = &hwa->ranges[i];
1532 for (j = 0; j < gena->count; ++j) {
1533 struct aperture *g = &gena->ranges[j];
1534 printk(KERN_DEBUG "checking generic (%llx %llx) vs hw (%llx %llx)\n",
1535 (unsigned long long)g->base,
1536 (unsigned long long)g->size,
1537 (unsigned long long)h->base,
1538 (unsigned long long)h->size);
1539 if (apertures_overlap(g, h))
1547 static int do_unregister_framebuffer(struct fb_info *fb_info);
1549 #define VGA_FB_PHYS 0xA0000
1550 static void do_remove_conflicting_framebuffers(struct apertures_struct *a,
1551 const char *name, bool primary)
1555 /* check all firmware fbs and kick off if the base addr overlaps */
1556 for (i = 0 ; i < FB_MAX; i++) {
1557 struct apertures_struct *gen_aper;
1558 if (!registered_fb[i])
1561 if (!(registered_fb[i]->flags & FBINFO_MISC_FIRMWARE))
1564 gen_aper = registered_fb[i]->apertures;
1565 if (fb_do_apertures_overlap(gen_aper, a) ||
1566 (primary && gen_aper && gen_aper->count &&
1567 gen_aper->ranges[0].base == VGA_FB_PHYS)) {
1569 printk(KERN_INFO "fb: conflicting fb hw usage "
1570 "%s vs %s - removing generic driver\n",
1571 name, registered_fb[i]->fix.id);
1572 do_unregister_framebuffer(registered_fb[i]);
1577 static int do_register_framebuffer(struct fb_info *fb_info)
1580 struct fb_event event;
1581 struct fb_videomode mode;
1583 if (fb_check_foreignness(fb_info))
1586 do_remove_conflicting_framebuffers(fb_info->apertures, fb_info->fix.id,
1587 fb_is_primary_device(fb_info));
1589 if (num_registered_fb == FB_MAX)
1592 num_registered_fb++;
1593 for (i = 0 ; i < FB_MAX; i++)
1594 if (!registered_fb[i])
1597 atomic_set(&fb_info->count, 1);
1598 mutex_init(&fb_info->lock);
1599 mutex_init(&fb_info->mm_lock);
1601 fb_info->dev = device_create(fb_class, fb_info->device,
1602 MKDEV(FB_MAJOR, i), NULL, "fb%d", i);
1603 if (IS_ERR(fb_info->dev)) {
1605 printk(KERN_WARNING "Unable to create device for framebuffer %d; errno = %ld\n", i, PTR_ERR(fb_info->dev));
1606 fb_info->dev = NULL;
1608 fb_init_device(fb_info);
1610 if (fb_info->pixmap.addr == NULL) {
1611 fb_info->pixmap.addr = kmalloc(FBPIXMAPSIZE, GFP_KERNEL);
1612 if (fb_info->pixmap.addr) {
1613 fb_info->pixmap.size = FBPIXMAPSIZE;
1614 fb_info->pixmap.buf_align = 1;
1615 fb_info->pixmap.scan_align = 1;
1616 fb_info->pixmap.access_align = 32;
1617 fb_info->pixmap.flags = FB_PIXMAP_DEFAULT;
1620 fb_info->pixmap.offset = 0;
1622 if (!fb_info->pixmap.blit_x)
1623 fb_info->pixmap.blit_x = ~(u32)0;
1625 if (!fb_info->pixmap.blit_y)
1626 fb_info->pixmap.blit_y = ~(u32)0;
1628 if (!fb_info->modelist.prev || !fb_info->modelist.next)
1629 INIT_LIST_HEAD(&fb_info->modelist);
1631 fb_var_to_videomode(&mode, &fb_info->var);
1632 fb_add_videomode(&mode, &fb_info->modelist);
1633 registered_fb[i] = fb_info;
1635 event.info = fb_info;
1636 if (!lock_fb_info(fb_info))
1638 fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event);
1639 unlock_fb_info(fb_info);
1643 static int do_unregister_framebuffer(struct fb_info *fb_info)
1645 struct fb_event event;
1649 if (i < 0 || i >= FB_MAX || registered_fb[i] != fb_info)
1652 if (!lock_fb_info(fb_info))
1654 event.info = fb_info;
1655 ret = fb_notifier_call_chain(FB_EVENT_FB_UNBIND, &event);
1656 unlock_fb_info(fb_info);
1661 if (fb_info->pixmap.addr &&
1662 (fb_info->pixmap.flags & FB_PIXMAP_DEFAULT))
1663 kfree(fb_info->pixmap.addr);
1664 fb_destroy_modelist(&fb_info->modelist);
1665 registered_fb[i] = NULL;
1666 num_registered_fb--;
1667 fb_cleanup_device(fb_info);
1668 device_destroy(fb_class, MKDEV(FB_MAJOR, i));
1669 event.info = fb_info;
1670 fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event);
1672 /* this may free fb info */
1673 put_fb_info(fb_info);
1677 void remove_conflicting_framebuffers(struct apertures_struct *a,
1678 const char *name, bool primary)
1680 mutex_lock(®istration_lock);
1681 do_remove_conflicting_framebuffers(a, name, primary);
1682 mutex_unlock(®istration_lock);
1684 EXPORT_SYMBOL(remove_conflicting_framebuffers);
1687 * register_framebuffer - registers a frame buffer device
1688 * @fb_info: frame buffer info structure
1690 * Registers a frame buffer device @fb_info.
1692 * Returns negative errno on error, or zero for success.
1696 register_framebuffer(struct fb_info *fb_info)
1700 mutex_lock(®istration_lock);
1701 ret = do_register_framebuffer(fb_info);
1702 mutex_unlock(®istration_lock);
1708 * unregister_framebuffer - releases a frame buffer device
1709 * @fb_info: frame buffer info structure
1711 * Unregisters a frame buffer device @fb_info.
1713 * Returns negative errno on error, or zero for success.
1715 * This function will also notify the framebuffer console
1716 * to release the driver.
1718 * This is meant to be called within a driver's module_exit()
1719 * function. If this is called outside module_exit(), ensure
1720 * that the driver implements fb_open() and fb_release() to
1721 * check that no processes are using the device.
1724 unregister_framebuffer(struct fb_info *fb_info)
1728 mutex_lock(®istration_lock);
1729 ret = do_unregister_framebuffer(fb_info);
1730 mutex_unlock(®istration_lock);
1736 * fb_set_suspend - low level driver signals suspend
1737 * @info: framebuffer affected
1738 * @state: 0 = resuming, !=0 = suspending
1740 * This is meant to be used by low level drivers to
1741 * signal suspend/resume to the core & clients.
1742 * It must be called with the console semaphore held
1744 void fb_set_suspend(struct fb_info *info, int state)
1746 struct fb_event event;
1748 if (!lock_fb_info(info))
1752 fb_notifier_call_chain(FB_EVENT_SUSPEND, &event);
1753 info->state = FBINFO_STATE_SUSPENDED;
1755 info->state = FBINFO_STATE_RUNNING;
1756 fb_notifier_call_chain(FB_EVENT_RESUME, &event);
1758 unlock_fb_info(info);
1762 * fbmem_init - init frame buffer subsystem
1764 * Initialize the frame buffer subsystem.
1766 * NOTE: This function is _only_ to be called by drivers/char/mem.c.
1773 proc_create("fb", 0, NULL, &fb_proc_fops);
1775 if (register_chrdev(FB_MAJOR,"fb",&fb_fops))
1776 printk("unable to get major %d for fb devs\n", FB_MAJOR);
1778 fb_class = class_create(THIS_MODULE, "graphics");
1779 if (IS_ERR(fb_class)) {
1780 printk(KERN_WARNING "Unable to create fb class; errno = %ld\n", PTR_ERR(fb_class));
1787 module_init(fbmem_init);
1791 remove_proc_entry("fb", NULL);
1792 class_destroy(fb_class);
1793 unregister_chrdev(FB_MAJOR, "fb");
1796 module_exit(fbmem_exit);
1797 MODULE_LICENSE("GPL");
1798 MODULE_DESCRIPTION("Framebuffer base");
1800 subsys_initcall(fbmem_init);
1803 int fb_new_modelist(struct fb_info *info)
1805 struct fb_event event;
1806 struct fb_var_screeninfo var = info->var;
1807 struct list_head *pos, *n;
1808 struct fb_modelist *modelist;
1809 struct fb_videomode *m, mode;
1812 list_for_each_safe(pos, n, &info->modelist) {
1813 modelist = list_entry(pos, struct fb_modelist, list);
1814 m = &modelist->mode;
1815 fb_videomode_to_var(&var, m);
1816 var.activate = FB_ACTIVATE_TEST;
1817 err = fb_set_var(info, &var);
1818 fb_var_to_videomode(&mode, &var);
1819 if (err || !fb_mode_is_equal(m, &mode)) {
1827 if (!list_empty(&info->modelist)) {
1828 if (!lock_fb_info(info))
1831 err = fb_notifier_call_chain(FB_EVENT_NEW_MODELIST, &event);
1832 unlock_fb_info(info);
1838 static char *video_options[FB_MAX] __read_mostly;
1839 static int ofonly __read_mostly;
1842 * fb_get_options - get kernel boot parameters
1843 * @name: framebuffer name as it would appear in
1844 * the boot parameter line
1845 * (video=<name>:<options>)
1846 * @option: the option will be stored here
1848 * NOTE: Needed to maintain backwards compatibility
1850 int fb_get_options(char *name, char **option)
1852 char *opt, *options = NULL;
1854 int name_len = strlen(name), i;
1856 if (name_len && ofonly && strncmp(name, "offb", 4))
1859 if (name_len && !retval) {
1860 for (i = 0; i < FB_MAX; i++) {
1861 if (video_options[i] == NULL)
1863 if (!video_options[i][0])
1865 opt = video_options[i];
1866 if (!strncmp(name, opt, name_len) &&
1867 opt[name_len] == ':')
1868 options = opt + name_len + 1;
1871 if (options && !strncmp(options, "off", 3))
1882 * video_setup - process command line options
1883 * @options: string of options
1885 * Process command line options for frame buffer subsystem.
1887 * NOTE: This function is a __setup and __init function.
1888 * It only stores the options. Drivers have to call
1889 * fb_get_options() as necessary.
1894 static int __init video_setup(char *options)
1898 if (!options || !*options)
1901 if (!global && !strncmp(options, "ofonly", 6)) {
1906 if (!global && !strchr(options, ':')) {
1907 fb_mode_option = options;
1912 for (i = 0; i < FB_MAX; i++) {
1913 if (video_options[i] == NULL) {
1914 video_options[i] = options;
1923 __setup("video=", video_setup);
1927 * Visible symbols for modules
1930 EXPORT_SYMBOL(register_framebuffer);
1931 EXPORT_SYMBOL(unregister_framebuffer);
1932 EXPORT_SYMBOL(num_registered_fb);
1933 EXPORT_SYMBOL(registered_fb);
1934 EXPORT_SYMBOL(fb_show_logo);
1935 EXPORT_SYMBOL(fb_set_var);
1936 EXPORT_SYMBOL(fb_blank);
1937 EXPORT_SYMBOL(fb_pan_display);
1938 EXPORT_SYMBOL(fb_get_buffer_offset);
1939 EXPORT_SYMBOL(fb_set_suspend);
1940 EXPORT_SYMBOL(fb_get_options);
1942 MODULE_LICENSE("GPL");