usb-serial: possible irq lock inversion (PPP vs. usb/serial)
[linux-2.6] / drivers / video / leo.c
1 /* leo.c: LEO frame buffer driver
2  *
3  * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
4  * Copyright (C) 1996-1999 Jakub Jelinek (jj@ultra.linux.cz)
5  * Copyright (C) 1997 Michal Rehacek (Michal.Rehacek@st.mff.cuni.cz)
6  *
7  * Driver layout based loosely on tgafb.c, see that file for credits.
8  */
9
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/errno.h>
13 #include <linux/string.h>
14 #include <linux/slab.h>
15 #include <linux/delay.h>
16 #include <linux/init.h>
17 #include <linux/fb.h>
18 #include <linux/mm.h>
19
20 #include <asm/io.h>
21 #include <asm/prom.h>
22 #include <asm/of_device.h>
23 #include <asm/fbio.h>
24
25 #include "sbuslib.h"
26
27 /*
28  * Local functions.
29  */
30
31 static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
32                          unsigned, struct fb_info *);
33 static int leo_blank(int, struct fb_info *);
34
35 static int leo_mmap(struct fb_info *, struct vm_area_struct *);
36 static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
37 static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
38
39 /*
40  *  Frame buffer operations
41  */
42
43 static struct fb_ops leo_ops = {
44         .owner                  = THIS_MODULE,
45         .fb_setcolreg           = leo_setcolreg,
46         .fb_blank               = leo_blank,
47         .fb_pan_display         = leo_pan_display,
48         .fb_fillrect            = cfb_fillrect,
49         .fb_copyarea            = cfb_copyarea,
50         .fb_imageblit           = cfb_imageblit,
51         .fb_mmap                = leo_mmap,
52         .fb_ioctl               = leo_ioctl,
53 #ifdef CONFIG_COMPAT
54         .fb_compat_ioctl        = sbusfb_compat_ioctl,
55 #endif
56 };
57
58 #define LEO_OFF_LC_SS0_KRN      0x00200000UL
59 #define LEO_OFF_LC_SS0_USR      0x00201000UL
60 #define LEO_OFF_LC_SS1_KRN      0x01200000UL
61 #define LEO_OFF_LC_SS1_USR      0x01201000UL
62 #define LEO_OFF_LD_SS0          0x00400000UL
63 #define LEO_OFF_LD_SS1          0x01400000UL
64 #define LEO_OFF_LD_GBL          0x00401000UL
65 #define LEO_OFF_LX_KRN          0x00600000UL
66 #define LEO_OFF_LX_CURSOR       0x00601000UL
67 #define LEO_OFF_SS0             0x00800000UL
68 #define LEO_OFF_SS1             0x01800000UL
69 #define LEO_OFF_UNK             0x00602000UL
70 #define LEO_OFF_UNK2            0x00000000UL
71
72 #define LEO_CUR_ENABLE          0x00000080
73 #define LEO_CUR_UPDATE          0x00000030
74 #define LEO_CUR_PROGRESS        0x00000006
75 #define LEO_CUR_UPDATECMAP      0x00000003
76
77 #define LEO_CUR_TYPE_MASK       0x00000000
78 #define LEO_CUR_TYPE_IMAGE      0x00000020
79 #define LEO_CUR_TYPE_CMAP       0x00000050
80
81 struct leo_cursor {
82         u8              xxx0[16];
83         u32     cur_type;
84         u32     cur_misc;
85         u32     cur_cursxy;
86         u32     cur_data;
87 };
88
89 #define LEO_KRN_TYPE_CLUT0      0x00001000
90 #define LEO_KRN_TYPE_CLUT1      0x00001001
91 #define LEO_KRN_TYPE_CLUT2      0x00001002
92 #define LEO_KRN_TYPE_WID        0x00001003
93 #define LEO_KRN_TYPE_UNK        0x00001006
94 #define LEO_KRN_TYPE_VIDEO      0x00002003
95 #define LEO_KRN_TYPE_CLUTDATA   0x00004000
96 #define LEO_KRN_CSR_ENABLE      0x00000008
97 #define LEO_KRN_CSR_PROGRESS    0x00000004
98 #define LEO_KRN_CSR_UNK         0x00000002
99 #define LEO_KRN_CSR_UNK2        0x00000001
100
101 struct leo_lx_krn {
102         u32     krn_type;
103         u32     krn_csr;
104         u32     krn_value;
105 };
106
107 struct leo_lc_ss0_krn {
108         u32     misc;
109         u8              xxx0[0x800-4];
110         u32     rev;
111 };
112
113 struct leo_lc_ss0_usr {
114         u32     csr;
115         u32     addrspace;
116         u32     fontmsk;
117         u32     fontt;
118         u32     extent;
119         u32     src;
120         u32             dst;
121         u32     copy;
122         u32     fill;
123 };
124
125 struct leo_lc_ss1_krn {
126         u8      unknown;
127 };
128
129 struct leo_lc_ss1_usr {
130         u8      unknown;
131 };
132
133 struct leo_ld {
134         u8              xxx0[0xe00];
135         u32     csr;
136         u32     wid;
137         u32     wmask;
138         u32     widclip;
139         u32     vclipmin;
140         u32     vclipmax;
141         u32     pickmin;        /* SS1 only */
142         u32     pickmax;        /* SS1 only */
143         u32     fg;
144         u32     bg;
145         u32     src;            /* Copy/Scroll (SS0 only) */
146         u32     dst;            /* Copy/Scroll/Fill (SS0 only) */
147         u32     extent;         /* Copy/Scroll/Fill size (SS0 only) */
148         u32             xxx1[3];
149         u32     setsem;         /* SS1 only */
150         u32     clrsem;         /* SS1 only */
151         u32     clrpick;        /* SS1 only */
152         u32     clrdat;         /* SS1 only */
153         u32     alpha;          /* SS1 only */
154         u8              xxx2[0x2c];
155         u32     winbg;
156         u32     planemask;
157         u32     rop;
158         u32     z;
159         u32     dczf;           /* SS1 only */
160         u32     dczb;           /* SS1 only */
161         u32     dcs;            /* SS1 only */
162         u32     dczs;           /* SS1 only */
163         u32     pickfb;         /* SS1 only */
164         u32     pickbb;         /* SS1 only */
165         u32     dcfc;           /* SS1 only */
166         u32     forcecol;       /* SS1 only */
167         u32     door[8];        /* SS1 only */
168         u32     pick[5];        /* SS1 only */
169 };
170
171 #define LEO_SS1_MISC_ENABLE     0x00000001
172 #define LEO_SS1_MISC_STEREO     0x00000002
173 struct leo_ld_ss1 {
174         u8      xxx0[0xef4];
175         u32     ss1_misc;
176 };
177
178 struct leo_ld_gbl {
179         u8      unknown;
180 };
181
182 struct leo_par {
183         spinlock_t              lock;
184         struct leo_lx_krn       __iomem *lx_krn;
185         struct leo_lc_ss0_usr   __iomem *lc_ss0_usr;
186         struct leo_ld_ss0       __iomem *ld_ss0;
187         struct leo_ld_ss1       __iomem *ld_ss1;
188         struct leo_cursor       __iomem *cursor;
189         u32                     extent;
190         u32                     clut_data[256];
191
192         u32                     flags;
193 #define LEO_FLAG_BLANKED        0x00000001
194
195         unsigned long           physbase;
196         unsigned long           which_io;
197         unsigned long           fbsize;
198 };
199
200 static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
201 {
202         int i;
203         
204         for (i = 0;
205              (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
206              i++)
207                 udelay (1); /* Busy wait at most 0.3 sec */
208         return;
209 }
210
211 /**
212  *      leo_setcolreg - Optional function. Sets a color register.
213  *      @regno: boolean, 0 copy local, 1 get_user() function
214  *      @red: frame buffer colormap structure
215  *      @green: The green value which can be up to 16 bits wide
216  *      @blue:  The blue value which can be up to 16 bits wide.
217  *      @transp: If supported the alpha value which can be up to 16 bits wide.
218  *      @info: frame buffer info structure
219  */
220 static int leo_setcolreg(unsigned regno,
221                          unsigned red, unsigned green, unsigned blue,
222                          unsigned transp, struct fb_info *info)
223 {
224         struct leo_par *par = (struct leo_par *) info->par;
225         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
226         unsigned long flags;
227         u32 val;
228         int i;
229
230         if (regno >= 256)
231                 return 1;
232
233         red >>= 8;
234         green >>= 8;
235         blue >>= 8;
236
237         par->clut_data[regno] = red | (green << 8) | (blue << 16);
238
239         spin_lock_irqsave(&par->lock, flags);
240
241         leo_wait(lx_krn);
242
243         sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
244         for (i = 0; i < 256; i++)
245                 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
246         sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
247
248         val = sbus_readl(&lx_krn->krn_csr);
249         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
250         sbus_writel(val, &lx_krn->krn_csr);
251
252         spin_unlock_irqrestore(&par->lock, flags);
253
254         return 0;
255 }
256
257 /**
258  *      leo_blank - Optional function.  Blanks the display.
259  *      @blank_mode: the blank mode we want.
260  *      @info: frame buffer structure that represents a single frame buffer
261  */
262 static int leo_blank(int blank, struct fb_info *info)
263 {
264         struct leo_par *par = (struct leo_par *) info->par;
265         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
266         unsigned long flags;
267         u32 val;
268
269         spin_lock_irqsave(&par->lock, flags);
270
271         switch (blank) {
272         case FB_BLANK_UNBLANK: /* Unblanking */
273                 val = sbus_readl(&lx_krn->krn_csr);
274                 val |= LEO_KRN_CSR_ENABLE;
275                 sbus_writel(val, &lx_krn->krn_csr);
276                 par->flags &= ~LEO_FLAG_BLANKED;
277                 break;
278
279         case FB_BLANK_NORMAL: /* Normal blanking */
280         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
281         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
282         case FB_BLANK_POWERDOWN: /* Poweroff */
283                 val = sbus_readl(&lx_krn->krn_csr);
284                 val &= ~LEO_KRN_CSR_ENABLE;
285                 sbus_writel(val, &lx_krn->krn_csr);
286                 par->flags |= LEO_FLAG_BLANKED;
287                 break;
288         }
289
290         spin_unlock_irqrestore(&par->lock, flags);
291
292         return 0;
293 }
294
295 static struct sbus_mmap_map leo_mmap_map[] = {
296         {
297                 .voff   = LEO_SS0_MAP,
298                 .poff   = LEO_OFF_SS0,
299                 .size   = 0x800000
300         },
301         {
302                 .voff   = LEO_LC_SS0_USR_MAP,
303                 .poff   = LEO_OFF_LC_SS0_USR,
304                 .size   = 0x1000
305         },
306         {
307                 .voff   = LEO_LD_SS0_MAP,
308                 .poff   = LEO_OFF_LD_SS0,
309                 .size   = 0x1000
310         },
311         {
312                 .voff   = LEO_LX_CURSOR_MAP,
313                 .poff   = LEO_OFF_LX_CURSOR,
314                 .size   = 0x1000
315         },
316         {
317                 .voff   = LEO_SS1_MAP,
318                 .poff   = LEO_OFF_SS1,
319                 .size   = 0x800000
320         },
321         {
322                 .voff   = LEO_LC_SS1_USR_MAP,
323                 .poff   = LEO_OFF_LC_SS1_USR,
324                 .size   = 0x1000
325         },
326         {
327                 .voff   = LEO_LD_SS1_MAP,
328                 .poff   = LEO_OFF_LD_SS1,
329                 .size   = 0x1000
330         },
331         {
332                 .voff   = LEO_UNK_MAP,
333                 .poff   = LEO_OFF_UNK,
334                 .size   = 0x1000
335         },
336         {
337                 .voff   = LEO_LX_KRN_MAP,
338                 .poff   = LEO_OFF_LX_KRN,
339                 .size   = 0x1000
340         },
341         {
342                 .voff   = LEO_LC_SS0_KRN_MAP,
343                 .poff   = LEO_OFF_LC_SS0_KRN,
344                 .size   = 0x1000
345         },
346         {
347                 .voff   = LEO_LC_SS1_KRN_MAP,
348                 .poff   = LEO_OFF_LC_SS1_KRN,
349                 .size   = 0x1000
350         },
351         {
352                 .voff   = LEO_LD_GBL_MAP,
353                 .poff   = LEO_OFF_LD_GBL,
354                 .size   = 0x1000
355         },
356         {
357                 .voff   = LEO_UNK2_MAP,
358                 .poff   = LEO_OFF_UNK2,
359                 .size   = 0x100000
360         },
361         { .size = 0 }
362 };
363
364 static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
365 {
366         struct leo_par *par = (struct leo_par *)info->par;
367
368         return sbusfb_mmap_helper(leo_mmap_map,
369                                   par->physbase, par->fbsize,
370                                   par->which_io, vma);
371 }
372
373 static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
374 {
375         struct leo_par *par = (struct leo_par *) info->par;
376
377         return sbusfb_ioctl_helper(cmd, arg, info,
378                                    FBTYPE_SUNLEO, 32, par->fbsize);
379 }
380
381 /*
382  *  Initialisation
383  */
384
385 static void
386 leo_init_fix(struct fb_info *info, struct device_node *dp)
387 {
388         strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
389
390         info->fix.type = FB_TYPE_PACKED_PIXELS;
391         info->fix.visual = FB_VISUAL_TRUECOLOR;
392
393         info->fix.line_length = 8192;
394
395         info->fix.accel = FB_ACCEL_SUN_LEO;
396 }
397
398 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
399 {
400         struct leo_par *par = (struct leo_par *) info->par;
401         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
402         struct fb_wid_item *wi;
403         unsigned long flags;
404         u32 val;
405         int i, j;
406
407         spin_lock_irqsave(&par->lock, flags);
408
409         leo_wait(lx_krn);
410
411         for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
412                 switch(wi->wi_type) {
413                 case FB_WID_DBL_8:
414                         j = (wi->wi_index & 0xf) + 0x40;
415                         break;
416
417                 case FB_WID_DBL_24:
418                         j = wi->wi_index & 0x3f;
419                         break;
420
421                 default:
422                         continue;
423                 };
424                 sbus_writel(0x5800 + j, &lx_krn->krn_type);
425                 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
426         }
427         sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
428
429         val = sbus_readl(&lx_krn->krn_csr);
430         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
431         sbus_writel(val, &lx_krn->krn_csr);
432
433         spin_unlock_irqrestore(&par->lock, flags);
434 }
435
436 static void leo_init_wids(struct fb_info *info)
437 {
438         struct fb_wid_item wi;
439         struct fb_wid_list wl;
440
441         wl.wl_count = 1;
442         wl.wl_list = &wi;
443         wi.wi_type = FB_WID_DBL_8;
444         wi.wi_index = 0;
445         wi.wi_values [0] = 0x2c0;
446         leo_wid_put(info, &wl);
447         wi.wi_index = 1;
448         wi.wi_values [0] = 0x30;
449         leo_wid_put(info, &wl);
450         wi.wi_index = 2;
451         wi.wi_values [0] = 0x20;
452         leo_wid_put(info, &wl);
453         wi.wi_type = FB_WID_DBL_24;
454         wi.wi_index = 1;
455         wi.wi_values [0] = 0x30;
456         leo_wid_put(info, &wl);
457
458 }
459
460 static void leo_switch_from_graph(struct fb_info *info)
461 {
462         struct leo_par *par = (struct leo_par *) info->par;
463         struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
464         unsigned long flags;
465         u32 val;
466
467         spin_lock_irqsave(&par->lock, flags);
468
469         par->extent = ((info->var.xres - 1) |
470                        ((info->var.yres - 1) << 16));
471
472         sbus_writel(0xffffffff, &ss->wid);
473         sbus_writel(0xffff, &ss->wmask);
474         sbus_writel(0, &ss->vclipmin);
475         sbus_writel(par->extent, &ss->vclipmax);
476         sbus_writel(0, &ss->fg);
477         sbus_writel(0xff000000, &ss->planemask);
478         sbus_writel(0x310850, &ss->rop);
479         sbus_writel(0, &ss->widclip);
480         sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
481                     &par->lc_ss0_usr->extent);
482         sbus_writel(4, &par->lc_ss0_usr->addrspace);
483         sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
484         sbus_writel(0, &par->lc_ss0_usr->fontt);
485         do {
486                 val = sbus_readl(&par->lc_ss0_usr->csr);
487         } while (val & 0x20000000);
488
489         spin_unlock_irqrestore(&par->lock, flags);
490 }
491
492 static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
493 {
494         /* We just use this to catch switches out of
495          * graphics mode.
496          */
497         leo_switch_from_graph(info);
498
499         if (var->xoffset || var->yoffset || var->vmode)
500                 return -EINVAL;
501         return 0;
502 }
503
504 static void leo_init_hw(struct fb_info *info)
505 {
506         struct leo_par *par = (struct leo_par *) info->par;
507         u32 val;
508
509         val = sbus_readl(&par->ld_ss1->ss1_misc);
510         val |= LEO_SS1_MISC_ENABLE;
511         sbus_writel(val, &par->ld_ss1->ss1_misc);
512
513         leo_switch_from_graph(info);
514 }
515
516 static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
517 {
518         var->red.offset = 0;
519         var->red.length = 8;
520         var->green.offset = 8;
521         var->green.length = 8;
522         var->blue.offset = 16;
523         var->blue.length = 8;
524         var->transp.offset = 0;
525         var->transp.length = 0;
526 }
527
528 struct all_info {
529         struct fb_info info;
530         struct leo_par par;
531 };
532
533 static void leo_unmap_regs(struct all_info *all)
534 {
535         if (all->par.lc_ss0_usr)
536                 of_iounmap(all->par.lc_ss0_usr, 0x1000);
537         if (all->par.ld_ss0)
538                 of_iounmap(all->par.ld_ss0, 0x1000);
539         if (all->par.ld_ss1)
540                 of_iounmap(all->par.ld_ss1, 0x1000);
541         if (all->par.lx_krn)
542                 of_iounmap(all->par.lx_krn, 0x1000);
543         if (all->par.cursor)
544                 of_iounmap(all->par.cursor, sizeof(struct leo_cursor));
545         if (all->info.screen_base)
546                 of_iounmap(all->info.screen_base, 0x800000);
547 }
548
549 static int __devinit leo_init_one(struct of_device *op)
550 {
551         struct device_node *dp = op->node;
552         struct all_info *all;
553         int linebytes, err;
554
555         all = kzalloc(sizeof(*all), GFP_KERNEL);
556         if (!all)
557                 return -ENOMEM;
558
559         spin_lock_init(&all->par.lock);
560
561         all->par.physbase = op->resource[0].start;
562         all->par.which_io = op->resource[0].flags & IORESOURCE_BITS;
563
564         sbusfb_fill_var(&all->info.var, dp->node, 32);
565         leo_fixup_var_rgb(&all->info.var);
566
567         linebytes = of_getintprop_default(dp, "linebytes",
568                                           all->info.var.xres);
569         all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
570
571         all->par.lc_ss0_usr =
572                 of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
573                            0x1000, "leolc ss0usr");
574         all->par.ld_ss0 =
575                 of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
576                            0x1000, "leold ss0");
577         all->par.ld_ss1 =
578                 of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
579                            0x1000, "leold ss1");
580         all->par.lx_krn =
581                 of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
582                            0x1000, "leolx krn");
583         all->par.cursor =
584                 of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
585                            sizeof(struct leo_cursor), "leolx cursor");
586         all->info.screen_base = 
587                 of_ioremap(&op->resource[0], LEO_OFF_SS0,
588                            0x800000, "leo ram");
589         if (!all->par.lc_ss0_usr ||
590             !all->par.ld_ss0 ||
591             !all->par.ld_ss1 ||
592             !all->par.lx_krn ||
593             !all->par.cursor ||
594             !all->info.screen_base) {
595                 leo_unmap_regs(all);
596                 kfree(all);
597                 return -ENOMEM;
598         }
599
600         all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
601         all->info.fbops = &leo_ops;
602         all->info.par = &all->par;
603
604         leo_init_wids(&all->info);
605         leo_init_hw(&all->info);
606
607         leo_blank(0, &all->info);
608
609         if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
610                 leo_unmap_regs(all);
611                 kfree(all);
612                 return -ENOMEM;;
613         }
614
615         leo_init_fix(&all->info, dp);
616
617         err = register_framebuffer(&all->info);
618         if (err < 0) {
619                 fb_dealloc_cmap(&all->info.cmap);
620                 leo_unmap_regs(all);
621                 kfree(all);
622                 return err;
623         }
624
625         dev_set_drvdata(&op->dev, all);
626
627         printk("%s: leo at %lx:%lx\n",
628                dp->full_name,
629                all->par.which_io, all->par.physbase);
630
631         return 0;
632 }
633
634 static int __devinit leo_probe(struct of_device *dev, const struct of_device_id *match)
635 {
636         struct of_device *op = to_of_device(&dev->dev);
637
638         return leo_init_one(op);
639 }
640
641 static int __devexit leo_remove(struct of_device *dev)
642 {
643         struct all_info *all = dev_get_drvdata(&dev->dev);
644
645         unregister_framebuffer(&all->info);
646         fb_dealloc_cmap(&all->info.cmap);
647
648         leo_unmap_regs(all);
649
650         kfree(all);
651
652         dev_set_drvdata(&dev->dev, NULL);
653
654         return 0;
655 }
656
657 static struct of_device_id leo_match[] = {
658         {
659                 .name = "leo",
660         },
661         {},
662 };
663 MODULE_DEVICE_TABLE(of, leo_match);
664
665 static struct of_platform_driver leo_driver = {
666         .name           = "leo",
667         .match_table    = leo_match,
668         .probe          = leo_probe,
669         .remove         = __devexit_p(leo_remove),
670 };
671
672 static int __init leo_init(void)
673 {
674         if (fb_get_options("leofb", NULL))
675                 return -ENODEV;
676
677         return of_register_driver(&leo_driver, &of_bus_type);
678 }
679
680 static void __exit leo_exit(void)
681 {
682         of_unregister_driver(&leo_driver);
683 }
684
685 module_init(leo_init);
686 module_exit(leo_exit);
687
688 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
689 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
690 MODULE_VERSION("2.0");
691 MODULE_LICENSE("GPL");