1 #include<linux/kernel.h>
2 #include<linux/module.h>
3 #include<linux/errno.h>
4 #include<linux/string.h>
5 #include<linux/mm.h>
6 #include<linux/slab.h>
7 #include<linux/delay.h>
8 #include<linux/fb.h>
9 #include<linux/ioport.h>
10 #include<linux/init.h>
11 #include<linux/pci.h>
12 #include<linux/mm_types.h>
13 #include<linux/vmalloc.h>
14 #include<linux/pagemap.h>
15 #include<linux/screen_info.h>
16 #include<linux/vmalloc.h>
17 #include<linux/pagemap.h>
18 #include <linux/console.h>
19 #ifdef CONFIG_MTRR
20 #include <asm/mtrr.h>
21 #endif
22 #include <asm/fb.h>
23 #include "sm750.h"
24 #include "sm750_hw.h"
25 #include "sm750_accel.h"
26 #include "sm750_cursor.h"
27
28 #include "modedb.h"
29
30 int smi_indent = 0;
31
32
33 /*
34 * #ifdef __BIG_ENDIAN
35 * ssize_t lynxfb_ops_write(struct fb_info *info, const char __user *buf,
36 * size_t count, loff_t *ppos);
37 * ssize_t lynxfb_ops_read(struct fb_info *info, char __user *buf,
38 * size_t count, loff_t *ppos);
39 * #endif
40 */
41
42 typedef void (*PROC_SPEC_SETUP)(struct lynx_share*, char *);
43 typedef int (*PROC_SPEC_MAP)(struct lynx_share*, struct pci_dev*);
44 typedef int (*PROC_SPEC_INITHW)(struct lynx_share*, struct pci_dev*);
45
46
47 /* common var for all device */
48 static int g_hwcursor = 1;
49 static int g_noaccel;
50 #ifdef CONFIG_MTRR
51 static int g_nomtrr;
52 #endif
53 static const char *g_fbmode[] = {NULL, NULL};
54 static const char *g_def_fbmode = "800x600-16@60";
55 static char *g_settings = NULL;
56 static int g_dualview;
57 static char *g_option = NULL;
58
59
60 static const struct fb_videomode lynx750_ext[] = {
61 /* 1024x600-60 VESA [1.71:1] */
62 {NULL, 60, 1024, 600, 20423, 144, 40, 18, 1, 104, 3,
63 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
64 FB_VMODE_NONINTERLACED},
65
66 /* 1024x600-70 VESA */
67 {NULL, 70, 1024, 600, 17211, 152, 48, 21, 1, 104, 3,
68 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
69 FB_VMODE_NONINTERLACED},
70
71 /* 1024x600-75 VESA */
72 {NULL, 75, 1024, 600, 15822, 160, 56, 23, 1, 104, 3,
73 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
74 FB_VMODE_NONINTERLACED},
75
76 /* 1024x600-85 VESA */
77 {NULL, 85, 1024, 600, 13730, 168, 56, 26, 1, 112, 3,
78 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
79 FB_VMODE_NONINTERLACED},
80
81 /* 720x480 */
82 {NULL, 60, 720, 480, 37427, 88, 16, 13, 1, 72, 3,
83 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
84 FB_VMODE_NONINTERLACED},
85
86 /* 1280x720 [1.78:1] */
87 {NULL, 60, 1280, 720, 13426, 162, 86, 22, 1, 136, 3,
88 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
89 FB_VMODE_NONINTERLACED},
90
91 /* 1280x768@60 */
92 {NULL, 60, 1280, 768, 12579, 192, 64, 20, 3, 128, 7,
93 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
94 FB_VMODE_NONINTERLACED},
95
96 {NULL, 60, 1360, 768, 11804, 208, 64, 23, 1, 144, 3,
97 FB_SYNC_HOR_HIGH_ACT|FB_VMODE_NONINTERLACED},
98
99 /* 1360 x 768 [1.77083:1] */
100 {NULL, 60, 1360, 768, 11804, 208, 64, 23, 1, 144, 3,
101 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
102 FB_VMODE_NONINTERLACED},
103
104 /* 1368 x 768 [1.78:1] */
105 {NULL, 60, 1368, 768, 11647, 216, 72, 23, 1, 144, 3,
106 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
107 FB_VMODE_NONINTERLACED},
108
109 /* 1440 x 900 [16:10] */
110 {NULL, 60, 1440, 900, 9392, 232, 80, 28, 1, 152, 3,
111 FB_SYNC_VERT_HIGH_ACT,
112 FB_VMODE_NONINTERLACED},
113
114 /* 1440x960 [15:10] */
115 {NULL, 60, 1440, 960, 8733, 240, 88, 30, 1, 152, 3,
116 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
117 FB_VMODE_NONINTERLACED},
118
119 /* 1920x1080 [16:9] */
120 {NULL, 60, 1920, 1080, 6734, 148, 88, 41, 1, 44, 3,
121 FB_SYNC_VERT_HIGH_ACT,
122 FB_VMODE_NONINTERLACED},
123 };
124
125
126
127
128 /* no hardware cursor supported under version 2.6.10, kernel bug */
lynxfb_ops_cursor(struct fb_info * info,struct fb_cursor * fbcursor)129 static int lynxfb_ops_cursor(struct fb_info *info, struct fb_cursor *fbcursor)
130 {
131 struct lynxfb_par *par;
132 struct lynxfb_crtc *crtc;
133 struct lynx_cursor *cursor;
134
135 par = info->par;
136 crtc = &par->crtc;
137 cursor = &crtc->cursor;
138
139 if (fbcursor->image.width > cursor->maxW ||
140 fbcursor->image.height > cursor->maxH ||
141 fbcursor->image.depth > 1) {
142 return -ENXIO;
143 }
144
145 cursor->disable(cursor);
146 if (fbcursor->set & FB_CUR_SETSIZE)
147 cursor->setSize(cursor,
148 fbcursor->image.width,
149 fbcursor->image.height);
150
151 if (fbcursor->set & FB_CUR_SETPOS)
152 cursor->setPos(cursor,
153 fbcursor->image.dx - info->var.xoffset,
154 fbcursor->image.dy - info->var.yoffset);
155
156 if (fbcursor->set & FB_CUR_SETCMAP) {
157 /* get the 16bit color of kernel means */
158 u16 fg, bg;
159
160 fg = ((info->cmap.red[fbcursor->image.fg_color] & 0xf800))|
161 ((info->cmap.green[fbcursor->image.fg_color] & 0xfc00) >> 5)|
162 ((info->cmap.blue[fbcursor->image.fg_color] & 0xf800) >> 11);
163
164 bg = ((info->cmap.red[fbcursor->image.bg_color] & 0xf800))|
165 ((info->cmap.green[fbcursor->image.bg_color] & 0xfc00) >> 5)|
166 ((info->cmap.blue[fbcursor->image.bg_color] & 0xf800) >> 11);
167
168 cursor->setColor(cursor, fg, bg);
169 }
170
171
172 if (fbcursor->set & (FB_CUR_SETSHAPE | FB_CUR_SETIMAGE)) {
173 cursor->setData(cursor,
174 fbcursor->rop,
175 fbcursor->image.data,
176 fbcursor->mask);
177 }
178
179 if (fbcursor->enable)
180 cursor->enable(cursor);
181
182 return 0;
183 }
184
lynxfb_ops_fillrect(struct fb_info * info,const struct fb_fillrect * region)185 static void lynxfb_ops_fillrect(struct fb_info *info,
186 const struct fb_fillrect *region)
187 {
188 struct lynxfb_par *par;
189 struct lynx_share *share;
190 unsigned int base, pitch, Bpp, rop;
191 u32 color;
192
193 if (info->state != FBINFO_STATE_RUNNING)
194 return;
195
196 par = info->par;
197 share = par->share;
198
199 /* each time 2d function begin to work,below three variable always need
200 * be set, seems we can put them together in some place */
201 base = par->crtc.oScreen;
202 pitch = info->fix.line_length;
203 Bpp = info->var.bits_per_pixel >> 3;
204
205 color = (Bpp == 1)?region->color:((u32 *)info->pseudo_palette)[region->color];
206 rop = (region->rop != ROP_COPY) ? HW_ROP2_XOR:HW_ROP2_COPY;
207
208 /*
209 * If not use spin_lock,system will die if user load driver
210 * and immediatly unload driver frequently (dual)
211 */
212 if (share->dual)
213 spin_lock(&share->slock);
214
215 share->accel.de_fillrect(&share->accel,
216 base, pitch, Bpp,
217 region->dx, region->dy,
218 region->width, region->height,
219 color, rop);
220 if (share->dual)
221 spin_unlock(&share->slock);
222 }
223
lynxfb_ops_copyarea(struct fb_info * info,const struct fb_copyarea * region)224 static void lynxfb_ops_copyarea(struct fb_info *info,
225 const struct fb_copyarea *region)
226 {
227 struct lynxfb_par *par;
228 struct lynx_share *share;
229 unsigned int base, pitch, Bpp;
230
231 par = info->par;
232 share = par->share;
233
234 /* each time 2d function begin to work,below three variable always need
235 * be set, seems we can put them together in some place */
236 base = par->crtc.oScreen;
237 pitch = info->fix.line_length;
238 Bpp = info->var.bits_per_pixel >> 3;
239
240 /*
241 * If not use spin_lock, system will die if user load driver
242 * and immediatly unload driver frequently (dual)
243 */
244 if (share->dual)
245 spin_lock(&share->slock);
246
247 share->accel.de_copyarea(&share->accel,
248 base, pitch, region->sx, region->sy,
249 base, pitch, Bpp, region->dx, region->dy,
250 region->width, region->height, HW_ROP2_COPY);
251 if (share->dual)
252 spin_unlock(&share->slock);
253 }
254
lynxfb_ops_imageblit(struct fb_info * info,const struct fb_image * image)255 static void lynxfb_ops_imageblit(struct fb_info *info,
256 const struct fb_image *image)
257 {
258 unsigned int base, pitch, Bpp;
259 unsigned int fgcol, bgcol;
260 struct lynxfb_par *par;
261 struct lynx_share *share;
262
263 par = info->par;
264 share = par->share;
265 /* each time 2d function begin to work,below three variable always need
266 * be set, seems we can put them together in some place */
267 base = par->crtc.oScreen;
268 pitch = info->fix.line_length;
269 Bpp = info->var.bits_per_pixel >> 3;
270
271 if (image->depth == 1) {
272 if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
273 info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
274 fgcol = ((u32 *)info->pseudo_palette)[image->fg_color];
275 bgcol = ((u32 *)info->pseudo_palette)[image->bg_color];
276 } else {
277 fgcol = image->fg_color;
278 bgcol = image->bg_color;
279 }
280 goto _do_work;
281 }
282 return;
283 _do_work:
284 /*
285 * If not use spin_lock, system will die if user load driver
286 * and immediatly unload driver frequently (dual)
287 */
288 if (share->dual)
289 spin_lock(&share->slock);
290
291 share->accel.de_imageblit(&share->accel,
292 image->data, image->width>>3, 0,
293 base, pitch, Bpp,
294 image->dx, image->dy,
295 image->width, image->height,
296 fgcol, bgcol, HW_ROP2_COPY);
297 if (share->dual)
298 spin_unlock(&share->slock);
299 }
300
lynxfb_ops_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)301 static int lynxfb_ops_pan_display(struct fb_var_screeninfo *var,
302 struct fb_info *info)
303 {
304 struct lynxfb_par *par;
305 struct lynxfb_crtc *crtc;
306 int ret;
307
308
309 if (!info)
310 return -EINVAL;
311
312 ret = 0;
313 par = info->par;
314 crtc = &par->crtc;
315 ret = crtc->proc_panDisplay(crtc, var, info);
316
317 return ret;
318 }
319
lynxfb_ops_set_par(struct fb_info * info)320 static int lynxfb_ops_set_par(struct fb_info *info)
321 {
322 struct lynxfb_par *par;
323 struct lynx_share *share;
324 struct lynxfb_crtc *crtc;
325 struct lynxfb_output *output;
326 struct fb_var_screeninfo *var;
327 struct fb_fix_screeninfo *fix;
328 int ret;
329 unsigned int line_length;
330
331 if (!info)
332 return -EINVAL;
333
334 ret = 0;
335 par = info->par;
336 share = par->share;
337 crtc = &par->crtc;
338 output = &par->output;
339 var = &info->var;
340 fix = &info->fix;
341
342 /* fix structur is not so FIX ... */
343 line_length = var->xres_virtual * var->bits_per_pixel / 8;
344 line_length = PADDING(crtc->line_pad, line_length);
345 fix->line_length = line_length;
346 pr_err("fix->line_length = %d\n", fix->line_length);
347
348 /* var->red,green,blue,transp are need to be set by driver
349 * and these data should be set before setcolreg routine
350 * */
351
352 switch (var->bits_per_pixel) {
353 case 8:
354 fix->visual = FB_VISUAL_PSEUDOCOLOR;
355 var->red.offset = 0;
356 var->red.length = 8;
357 var->green.offset = 0;
358 var->green.length = 8;
359 var->blue.offset = 0;
360 var->blue.length = 8;
361 var->transp.length = 0;
362 var->transp.offset = 0;
363 break;
364 case 16:
365 var->red.offset = 11;
366 var->red.length = 5;
367 var->green.offset = 5;
368 var->green.length = 6;
369 var->blue.offset = 0;
370 var->blue.length = 5;
371 var->transp.length = 0;
372 var->transp.offset = 0;
373 fix->visual = FB_VISUAL_TRUECOLOR;
374 break;
375 case 24:
376 case 32:
377 var->red.offset = 16;
378 var->red.length = 8;
379 var->green.offset = 8;
380 var->green.length = 8;
381 var->blue.offset = 0;
382 var->blue.length = 8;
383 fix->visual = FB_VISUAL_TRUECOLOR;
384 break;
385 default:
386 ret = -EINVAL;
387 break;
388 }
389 var->height = var->width = -1;
390 var->accel_flags = 0;/*FB_ACCELF_TEXT;*/
391
392 if (ret) {
393 pr_err("pixel bpp format not satisfied\n.");
394 return ret;
395 }
396 ret = crtc->proc_setMode(crtc, var, fix);
397 if (!ret)
398 ret = output->proc_setMode(output, var, fix);
399 return ret;
400 }
401
chan_to_field(unsigned int chan,struct fb_bitfield * bf)402 static inline unsigned int chan_to_field(unsigned int chan,
403 struct fb_bitfield *bf)
404 {
405 chan &= 0xffff;
406 chan >>= 16 - bf->length;
407 return chan << bf->offset;
408 }
409
410 #ifdef CONFIG_PM
lynxfb_suspend(struct pci_dev * pdev,pm_message_t mesg)411 static int lynxfb_suspend(struct pci_dev *pdev, pm_message_t mesg)
412 {
413 struct fb_info *info;
414 struct lynx_share *share;
415 int ret;
416
417 if (mesg.event == pdev->dev.power.power_state.event)
418 return 0;
419
420 ret = 0;
421 share = pci_get_drvdata(pdev);
422 switch (mesg.event) {
423 case PM_EVENT_FREEZE:
424 case PM_EVENT_PRETHAW:
425 pdev->dev.power.power_state = mesg;
426 return 0;
427 }
428
429 console_lock();
430 if (mesg.event & PM_EVENT_SLEEP) {
431 info = share->fbinfo[0];
432 if (info)
433 /* 1 means do suspend */
434 fb_set_suspend(info, 1);
435 info = share->fbinfo[1];
436 if (info)
437 /* 1 means do suspend */
438 fb_set_suspend(info, 1);
439
440 ret = pci_save_state(pdev);
441 if (ret) {
442 pr_err("error:%d occurred in pci_save_state\n", ret);
443 return ret;
444 }
445
446 /* set chip to sleep mode */
447 if (share->suspend)
448 (*share->suspend)(share);
449
450 pci_disable_device(pdev);
451 ret = pci_set_power_state(pdev, pci_choose_state(pdev, mesg));
452 if (ret) {
453 pr_err("error:%d occurred in pci_set_power_state\n", ret);
454 return ret;
455 }
456 }
457
458 pdev->dev.power.power_state = mesg;
459 console_unlock();
460 return ret;
461 }
462
lynxfb_resume(struct pci_dev * pdev)463 static int lynxfb_resume(struct pci_dev *pdev)
464 {
465 struct fb_info *info;
466 struct lynx_share *share;
467
468 struct lynxfb_par *par;
469 struct lynxfb_crtc *crtc;
470 struct lynx_cursor *cursor;
471
472 int ret;
473
474
475 ret = 0;
476 share = pci_get_drvdata(pdev);
477
478 console_lock();
479
480 ret = pci_set_power_state(pdev, PCI_D0);
481 if (ret) {
482 pr_err("error:%d occured in pci_set_power_state\n", ret);
483 return ret;
484 }
485
486
487 if (pdev->dev.power.power_state.event != PM_EVENT_FREEZE) {
488 pci_restore_state(pdev);
489 ret = pci_enable_device(pdev);
490 if (ret) {
491 pr_err("error:%d occured in pci_enable_device\n", ret);
492 return ret;
493 }
494 pci_set_master(pdev);
495 }
496 if (share->resume)
497 (*share->resume)(share);
498
499 hw_sm750_inithw(share, pdev);
500
501
502 info = share->fbinfo[0];
503
504 if (info) {
505 par = info->par;
506 crtc = &par->crtc;
507 cursor = &crtc->cursor;
508 memset_io(cursor->vstart, 0x0, cursor->size);
509 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
510 lynxfb_ops_set_par(info);
511 fb_set_suspend(info, 0);
512 }
513
514 info = share->fbinfo[1];
515
516 if (info) {
517 par = info->par;
518 crtc = &par->crtc;
519 cursor = &crtc->cursor;
520 memset_io(cursor->vstart, 0x0, cursor->size);
521 memset_io(crtc->vScreen, 0x0, crtc->vidmem_size);
522 lynxfb_ops_set_par(info);
523 fb_set_suspend(info, 0);
524 }
525
526
527 console_unlock();
528 return ret;
529 }
530 #endif
531
lynxfb_ops_check_var(struct fb_var_screeninfo * var,struct fb_info * info)532 static int lynxfb_ops_check_var(struct fb_var_screeninfo *var,
533 struct fb_info *info)
534 {
535 struct lynxfb_par *par;
536 struct lynxfb_crtc *crtc;
537 struct lynxfb_output *output;
538 struct lynx_share *share;
539 int ret;
540 resource_size_t request;
541
542
543 par = info->par;
544 crtc = &par->crtc;
545 output = &par->output;
546 share = par->share;
547 ret = 0;
548
549 pr_debug("check var:%dx%d-%d\n",
550 var->xres,
551 var->yres,
552 var->bits_per_pixel);
553
554
555 switch (var->bits_per_pixel) {
556 case 8:
557 case 16:
558 case 24: /* support 24 bpp for only lynx712/722/720 */
559 case 32:
560 break;
561 default:
562 pr_err("bpp %d not supported\n", var->bits_per_pixel);
563 ret = -EINVAL;
564 goto exit;
565 }
566
567 switch (var->bits_per_pixel) {
568 case 8:
569 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
570 var->red.offset = 0;
571 var->red.length = 8;
572 var->green.offset = 0;
573 var->green.length = 8;
574 var->blue.offset = 0;
575 var->blue.length = 8;
576 var->transp.length = 0;
577 var->transp.offset = 0;
578 break;
579 case 16:
580 var->red.offset = 11;
581 var->red.length = 5;
582 var->green.offset = 5;
583 var->green.length = 6;
584 var->blue.offset = 0;
585 var->blue.length = 5;
586 var->transp.length = 0;
587 var->transp.offset = 0;
588 info->fix.visual = FB_VISUAL_TRUECOLOR;
589 break;
590 case 24:
591 case 32:
592 var->red.offset = 16;
593 var->red.length = 8;
594 var->green.offset = 8;
595 var->green.length = 8;
596 var->blue.offset = 0;
597 var->blue.length = 8;
598 info->fix.visual = FB_VISUAL_TRUECOLOR;
599 break;
600 default:
601 ret = -EINVAL;
602 break;
603 }
604 var->height = var->width = -1;
605 var->accel_flags = 0;/* FB_ACCELF_TEXT; */
606
607 /* check if current fb's video memory big enought to hold the onscreen*/
608 request = var->xres_virtual * (var->bits_per_pixel >> 3);
609 /* defaulty crtc->channel go with par->index */
610
611 request = PADDING(crtc->line_pad, request);
612 request = request * var->yres_virtual;
613 if (crtc->vidmem_size < request) {
614 pr_err("not enough video memory for mode\n");
615 return -ENOMEM;
616 }
617
618 ret = output->proc_checkMode(output, var);
619 if (!ret)
620 ret = crtc->proc_checkMode(crtc, var);
621 exit:
622 return ret;
623 }
624
625
lynxfb_ops_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)626 static int lynxfb_ops_setcolreg(unsigned regno,
627 unsigned red,
628 unsigned green,
629 unsigned blue,
630 unsigned transp,
631 struct fb_info *info)
632 {
633 struct lynxfb_par *par;
634 struct lynxfb_crtc *crtc;
635 struct fb_var_screeninfo *var;
636 int ret;
637
638 par = info->par;
639 crtc = &par->crtc;
640 var = &info->var;
641 ret = 0;
642
643 if (regno > 256) {
644 pr_err("regno = %d\n", regno);
645 return -EINVAL;
646 }
647
648 if (info->var.grayscale)
649 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
650
651 if (var->bits_per_pixel == 8 &&
652 info->fix.visual == FB_VISUAL_PSEUDOCOLOR) {
653 red >>= 8;
654 green >>= 8;
655 blue >>= 8;
656 ret = crtc->proc_setColReg(crtc, regno, red, green, blue);
657 goto exit;
658 }
659
660
661 if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 256) {
662 u32 val;
663
664 if (var->bits_per_pixel == 16 ||
665 var->bits_per_pixel == 32 ||
666 var->bits_per_pixel == 24) {
667 val = chan_to_field(red, &var->red);
668 val |= chan_to_field(green, &var->green);
669 val |= chan_to_field(blue, &var->blue);
670 par->pseudo_palette[regno] = val;
671 goto exit;
672 }
673 }
674
675 ret = -EINVAL;
676
677 exit:
678 return ret;
679 }
680
lynxfb_ops_blank(int blank,struct fb_info * info)681 static int lynxfb_ops_blank(int blank, struct fb_info *info)
682 {
683 struct lynxfb_par *par;
684 struct lynxfb_output *output;
685
686 pr_debug("blank = %d.\n", blank);
687 par = info->par;
688 output = &par->output;
689 return output->proc_setBLANK(output, blank);
690 }
691
sm750fb_set_drv(struct lynxfb_par * par)692 static int sm750fb_set_drv(struct lynxfb_par *par)
693 {
694 int ret;
695 struct lynx_share *share;
696 struct sm750_share *spec_share;
697 struct lynxfb_output *output;
698 struct lynxfb_crtc *crtc;
699
700 ret = 0;
701
702 share = par->share;
703 spec_share = container_of(share, struct sm750_share, share);
704 output = &par->output;
705 crtc = &par->crtc;
706
707 crtc->vidmem_size = (share->dual)?share->vidmem_size>>1:share->vidmem_size;
708 /* setup crtc and output member */
709 spec_share->hwCursor = g_hwcursor;
710
711 crtc->proc_setMode = hw_sm750_crtc_setMode;
712 crtc->proc_checkMode = hw_sm750_crtc_checkMode;
713 crtc->proc_setColReg = hw_sm750_setColReg;
714 crtc->proc_panDisplay = hw_sm750_pan_display;
715 crtc->clear = hw_sm750_crtc_clear;
716 crtc->line_pad = 16;
717 crtc->xpanstep = 8;
718 crtc->ypanstep = 1;
719 crtc->ywrapstep = 0;
720
721 output->proc_setMode = hw_sm750_output_setMode;
722 output->proc_checkMode = hw_sm750_output_checkMode;
723
724 output->proc_setBLANK = (share->revid == SM750LE_REVISION_ID)?hw_sm750le_setBLANK:hw_sm750_setBLANK;
725 output->clear = hw_sm750_output_clear;
726 /* chip specific phase */
727 share->accel.de_wait = (share->revid == SM750LE_REVISION_ID)?hw_sm750le_deWait : hw_sm750_deWait;
728 switch (spec_share->state.dataflow) {
729 case sm750_simul_pri:
730 output->paths = sm750_pnc;
731 crtc->channel = sm750_primary;
732 crtc->oScreen = 0;
733 crtc->vScreen = share->pvMem;
734 pr_info("use simul primary mode\n");
735 break;
736 case sm750_simul_sec:
737 output->paths = sm750_pnc;
738 crtc->channel = sm750_secondary;
739 crtc->oScreen = 0;
740 crtc->vScreen = share->pvMem;
741 break;
742 case sm750_dual_normal:
743 if (par->index == 0) {
744 output->paths = sm750_panel;
745 crtc->channel = sm750_primary;
746 crtc->oScreen = 0;
747 crtc->vScreen = share->pvMem;
748 } else {
749 output->paths = sm750_crt;
750 crtc->channel = sm750_secondary;
751 /* not consider of padding stuffs for oScreen,need fix */
752 crtc->oScreen = (share->vidmem_size >> 1);
753 crtc->vScreen = share->pvMem + crtc->oScreen;
754 }
755 break;
756 case sm750_dual_swap:
757 if (par->index == 0) {
758 output->paths = sm750_panel;
759 crtc->channel = sm750_secondary;
760 crtc->oScreen = 0;
761 crtc->vScreen = share->pvMem;
762 } else {
763 output->paths = sm750_crt;
764 crtc->channel = sm750_primary;
765 /* not consider of padding stuffs for oScreen,need fix */
766 crtc->oScreen = (share->vidmem_size >> 1);
767 crtc->vScreen = share->pvMem + crtc->oScreen;
768 }
769 break;
770 default:
771 ret = -EINVAL;
772 }
773
774 return ret;
775 }
776
777 static struct fb_ops lynxfb_ops = {
778 .owner = THIS_MODULE,
779 .fb_check_var = lynxfb_ops_check_var,
780 .fb_set_par = lynxfb_ops_set_par,
781 .fb_setcolreg = lynxfb_ops_setcolreg,
782 .fb_blank = lynxfb_ops_blank,
783 .fb_fillrect = cfb_fillrect,
784 .fb_imageblit = cfb_imageblit,
785 .fb_copyarea = cfb_copyarea,
786 /* cursor */
787 .fb_cursor = lynxfb_ops_cursor,
788 };
789
790
lynxfb_set_fbinfo(struct fb_info * info,int index)791 static int lynxfb_set_fbinfo(struct fb_info *info, int index)
792 {
793 int i;
794 struct lynxfb_par *par;
795 struct lynx_share *share;
796 struct lynxfb_crtc *crtc;
797 struct lynxfb_output *output;
798 struct fb_var_screeninfo *var;
799 struct fb_fix_screeninfo *fix;
800
801 const struct fb_videomode *pdb[] = {
802 lynx750_ext, NULL, vesa_modes,
803 };
804 int cdb[] = {ARRAY_SIZE(lynx750_ext), 0, VESA_MODEDB_SIZE};
805 static const char *mdb_desc[] = {
806 "driver prepared modes",
807 "kernel prepared default modedb",
808 "kernel HELPERS prepared vesa_modes",
809 };
810
811
812 static const char *fixId[2] = {
813 "sm750_fb1", "sm750_fb2",
814 };
815
816 int ret, line_length;
817
818 ret = 0;
819 par = (struct lynxfb_par *)info->par;
820 share = par->share;
821 crtc = &par->crtc;
822 output = &par->output;
823 var = &info->var;
824 fix = &info->fix;
825
826 /* set index */
827 par->index = index;
828 output->channel = &crtc->channel;
829 sm750fb_set_drv(par);
830 lynxfb_ops.fb_pan_display = lynxfb_ops_pan_display;
831
832
833 /* set current cursor variable and proc pointer,
834 * must be set after crtc member initialized */
835 crtc->cursor.offset = crtc->oScreen + crtc->vidmem_size - 1024;
836 crtc->cursor.mmio = share->pvReg + 0x800f0 + (int)crtc->channel * 0x140;
837
838 pr_info("crtc->cursor.mmio = %p\n", crtc->cursor.mmio);
839 crtc->cursor.maxH = crtc->cursor.maxW = 64;
840 crtc->cursor.size = crtc->cursor.maxH*crtc->cursor.maxW*2/8;
841 crtc->cursor.disable = hw_cursor_disable;
842 crtc->cursor.enable = hw_cursor_enable;
843 crtc->cursor.setColor = hw_cursor_setColor;
844 crtc->cursor.setPos = hw_cursor_setPos;
845 crtc->cursor.setSize = hw_cursor_setSize;
846 crtc->cursor.setData = hw_cursor_setData;
847 crtc->cursor.vstart = share->pvMem + crtc->cursor.offset;
848
849
850 crtc->cursor.share = share;
851 memset_io(crtc->cursor.vstart, 0, crtc->cursor.size);
852 if (!g_hwcursor) {
853 lynxfb_ops.fb_cursor = NULL;
854 crtc->cursor.disable(&crtc->cursor);
855 }
856
857
858 /* set info->fbops, must be set before fb_find_mode */
859 if (!share->accel_off) {
860 /* use 2d acceleration */
861 lynxfb_ops.fb_fillrect = lynxfb_ops_fillrect;
862 lynxfb_ops.fb_copyarea = lynxfb_ops_copyarea;
863 lynxfb_ops.fb_imageblit = lynxfb_ops_imageblit;
864 }
865 info->fbops = &lynxfb_ops;
866
867 if (!g_fbmode[index]) {
868 g_fbmode[index] = g_def_fbmode;
869 if (index)
870 g_fbmode[index] = g_fbmode[0];
871 }
872
873
874 for (i = 0; i < 3; i++) {
875
876 ret = fb_find_mode(var, info, g_fbmode[index],
877 pdb[i], cdb[i], NULL, 8);
878
879 if (ret == 1) {
880 pr_info("success! use specified mode:%s in %s\n",
881 g_fbmode[index],
882 mdb_desc[i]);
883 break;
884 } else if (ret == 2) {
885 pr_warn("use specified mode:%s in %s,with an ignored refresh rate\n",
886 g_fbmode[index],
887 mdb_desc[i]);
888 break;
889 } else if (ret == 3) {
890 pr_warn("wanna use default mode\n");
891 /*break;*/
892 } else if (ret == 4) {
893 pr_warn("fall back to any valid mode\n");
894 } else {
895 pr_warn("ret = %d,fb_find_mode failed,with %s\n",
896 ret,
897 mdb_desc[i]);
898 }
899 }
900
901 /* some member of info->var had been set by fb_find_mode */
902
903 pr_info("Member of info->var is :\n\
904 xres=%d\n\
905 yres=%d\n\
906 xres_virtual=%d\n\
907 yres_virtual=%d\n\
908 xoffset=%d\n\
909 yoffset=%d\n\
910 bits_per_pixel=%d\n \
911 ...\n",
912 var->xres,
913 var->yres,
914 var->xres_virtual,
915 var->yres_virtual,
916 var->xoffset,
917 var->yoffset,
918 var->bits_per_pixel);
919
920 /* set par */
921 par->info = info;
922
923 /* set info */
924 line_length = PADDING(crtc->line_pad,
925 (var->xres_virtual * var->bits_per_pixel/8));
926
927 info->pseudo_palette = &par->pseudo_palette[0];
928 info->screen_base = crtc->vScreen;
929 pr_debug("screen_base vaddr = %p\n", info->screen_base);
930 info->screen_size = line_length * var->yres_virtual;
931 info->flags = FBINFO_FLAG_DEFAULT|0;
932
933 /* set info->fix */
934 fix->type = FB_TYPE_PACKED_PIXELS;
935 fix->type_aux = 0;
936 fix->xpanstep = crtc->xpanstep;
937 fix->ypanstep = crtc->ypanstep;
938 fix->ywrapstep = crtc->ywrapstep;
939 fix->accel = FB_ACCEL_SMI;
940
941 strlcpy(fix->id, fixId[index], sizeof(fix->id));
942
943
944 fix->smem_start = crtc->oScreen + share->vidmem_start;
945 pr_info("fix->smem_start = %lx\n", fix->smem_start);
946 /* according to mmap experiment from user space application,
947 * fix->mmio_len should not larger than virtual size
948 * (xres_virtual x yres_virtual x ByPP)
949 * Below line maybe buggy when user mmap fb dev node and write
950 * data into the bound over virtual size
951 * */
952 fix->smem_len = crtc->vidmem_size;
953 pr_info("fix->smem_len = %x\n", fix->smem_len);
954 info->screen_size = fix->smem_len;
955 fix->line_length = line_length;
956 fix->mmio_start = share->vidreg_start;
957 pr_info("fix->mmio_start = %lx\n", fix->mmio_start);
958 fix->mmio_len = share->vidreg_size;
959 pr_info("fix->mmio_len = %x\n", fix->mmio_len);
960 switch (var->bits_per_pixel) {
961 case 8:
962 fix->visual = FB_VISUAL_PSEUDOCOLOR;
963 break;
964 case 16:
965 case 32:
966 fix->visual = FB_VISUAL_TRUECOLOR;
967 break;
968 }
969
970 /* set var */
971 var->activate = FB_ACTIVATE_NOW;
972 var->accel_flags = 0;
973 var->vmode = FB_VMODE_NONINTERLACED;
974
975 pr_debug("#1 show info->cmap : \nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
976 info->cmap.start, info->cmap.len,
977 info->cmap.red, info->cmap.green, info->cmap.blue,
978 info->cmap.transp);
979
980 ret = fb_alloc_cmap(&info->cmap, 256, 0);
981 if (ret < 0) {
982 pr_err("Could not allcate memory for cmap.\n");
983 goto exit;
984 }
985
986 pr_debug("#2 show info->cmap :\nstart=%d,len=%d,red=%p,green=%p,blue=%p,transp=%p\n",
987 info->cmap.start, info->cmap.len,
988 info->cmap.red, info->cmap.green, info->cmap.blue,
989 info->cmap.transp);
990
991 exit:
992 lynxfb_ops_check_var(var, info);
993 return ret;
994 }
995
996 /* chip specific g_option configuration routine */
sm750fb_setup(struct lynx_share * share,char * src)997 static void sm750fb_setup(struct lynx_share *share, char *src)
998 {
999 struct sm750_share *spec_share;
1000 char *opt;
1001 #ifdef CAP_EXPENSION
1002 char *exp_res;
1003 #endif
1004 int swap;
1005
1006
1007 spec_share = container_of(share, struct sm750_share, share);
1008 #ifdef CAP_EXPENSIION
1009 exp_res = NULL;
1010 #endif
1011 swap = 0;
1012
1013 spec_share->state.initParm.chip_clk = 0;
1014 spec_share->state.initParm.mem_clk = 0;
1015 spec_share->state.initParm.master_clk = 0;
1016 spec_share->state.initParm.powerMode = 0;
1017 spec_share->state.initParm.setAllEngOff = 0;
1018 spec_share->state.initParm.resetMemory = 1;
1019
1020 /* defaultly turn g_hwcursor on for both view */
1021 g_hwcursor = 3;
1022
1023 if (!src || !*src) {
1024 pr_warn("no specific g_option.\n");
1025 goto NO_PARAM;
1026 }
1027
1028 while ((opt = strsep(&src, ":")) != NULL && *opt != 0) {
1029 pr_err("opt=%s\n", opt);
1030 pr_err("src=%s\n", src);
1031
1032 if (!strncmp(opt, "swap", strlen("swap")))
1033 swap = 1;
1034 else if (!strncmp(opt, "nocrt", strlen("nocrt")))
1035 spec_share->state.nocrt = 1;
1036 else if (!strncmp(opt, "36bit", strlen("36bit")))
1037 spec_share->state.pnltype = sm750_doubleTFT;
1038 else if (!strncmp(opt, "18bit", strlen("18bit")))
1039 spec_share->state.pnltype = sm750_dualTFT;
1040 else if (!strncmp(opt, "24bit", strlen("24bit")))
1041 spec_share->state.pnltype = sm750_24TFT;
1042 #ifdef CAP_EXPANSION
1043 else if (!strncmp(opt, "exp:", strlen("exp:")))
1044 exp_res = opt + strlen("exp:");
1045 #endif
1046 else if (!strncmp(opt, "nohwc0", strlen("nohwc0")))
1047 g_hwcursor &= ~0x1;
1048 else if (!strncmp(opt, "nohwc1", strlen("nohwc1")))
1049 g_hwcursor &= ~0x2;
1050 else if (!strncmp(opt, "nohwc", strlen("nohwc")))
1051 g_hwcursor = 0;
1052 else {
1053 if (!g_fbmode[0]) {
1054 g_fbmode[0] = opt;
1055 pr_info("find fbmode0 : %s\n", g_fbmode[0]);
1056 } else if (!g_fbmode[1]) {
1057 g_fbmode[1] = opt;
1058 pr_info("find fbmode1 : %s\n", g_fbmode[1]);
1059 } else {
1060 pr_warn("How many view you wann set?\n");
1061 }
1062 }
1063 }
1064 #ifdef CAP_EXPANSION
1065 if (getExpRes(exp_res,
1066 &spec_share->state.xLCD,
1067 &spec_share->state.yLCD)) {
1068 /* seems exp_res is not valid */
1069 spec_share->state.xLCD = spec_share->state.yLCD = 0;
1070 }
1071 #endif
1072
1073 NO_PARAM:
1074 if (share->revid != SM750LE_REVISION_ID) {
1075 if (share->dual) {
1076 if (swap)
1077 spec_share->state.dataflow = sm750_dual_swap;
1078 else
1079 spec_share->state.dataflow = sm750_dual_normal;
1080 } else {
1081 if (swap)
1082 spec_share->state.dataflow = sm750_simul_sec;
1083 else
1084 spec_share->state.dataflow = sm750_simul_pri;
1085 }
1086 } else {
1087 /* SM750LE only have one crt channel */
1088 spec_share->state.dataflow = sm750_simul_sec;
1089 /* sm750le do not have complex attributes */
1090 spec_share->state.nocrt = 0;
1091 }
1092 }
1093
lynxfb_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)1094 static int lynxfb_pci_probe(struct pci_dev *pdev,
1095 const struct pci_device_id * ent)
1096 {
1097 struct fb_info *info[] = {NULL, NULL};
1098 struct lynx_share *share = NULL;
1099
1100 struct sm750_share *spec_share = NULL;
1101 size_t spec_offset = 0;
1102 int fbidx;
1103
1104
1105 /* enable device */
1106 if (pci_enable_device(pdev)) {
1107 pr_err("can not enable device.\n");
1108 goto err_enable;
1109 }
1110
1111 /* though offset of share in sm750_share is 0,
1112 * we use this marcro as the same */
1113 spec_offset = offsetof(struct sm750_share, share);
1114
1115 spec_share = kzalloc(sizeof(*spec_share), GFP_KERNEL);
1116 if (!spec_share) {
1117 pr_err("Could not allocate memory for share.\n");
1118 goto err_share;
1119 }
1120
1121 /* setting share structure */
1122 share = (struct lynx_share *)(&(spec_share->share));
1123 share->fbinfo[0] = share->fbinfo[1] = NULL;
1124 share->devid = pdev->device;
1125 share->revid = pdev->revision;
1126
1127 pr_info("share->revid = %02x\n", share->revid);
1128 share->pdev = pdev;
1129 #ifdef CONFIG_MTRR
1130 share->mtrr_off = g_nomtrr;
1131 share->mtrr.vram = 0;
1132 share->mtrr.vram_added = 0;
1133 #endif
1134 share->accel_off = g_noaccel;
1135 share->dual = g_dualview;
1136 spin_lock_init(&share->slock);
1137
1138 if (!share->accel_off) {
1139 /* hook deInit and 2d routines, notes that below hw_xxx
1140 * routine can work on most of lynx chips
1141 * if some chip need specific function,
1142 * please hook it in smXXX_set_drv routine */
1143 share->accel.de_init = hw_de_init;
1144 share->accel.de_fillrect = hw_fillrect;
1145 share->accel.de_copyarea = hw_copyarea;
1146 share->accel.de_imageblit = hw_imageblit;
1147 pr_info("enable 2d acceleration\n");
1148 } else {
1149 pr_info("disable 2d acceleration\n");
1150 }
1151
1152 /* call chip specific setup routine */
1153 sm750fb_setup(share, g_settings);
1154
1155 /* call chip specific mmap routine */
1156 if (hw_sm750_map(share, pdev)) {
1157 pr_err("Memory map failed\n");
1158 goto err_map;
1159 }
1160
1161 #ifdef CONFIG_MTRR
1162 if (!share->mtrr_off) {
1163 pr_info("enable mtrr\n");
1164 share->mtrr.vram = mtrr_add(share->vidmem_start,
1165 share->vidmem_size,
1166 MTRR_TYPE_WRCOMB, 1);
1167
1168 if (share->mtrr.vram < 0) {
1169 /* don't block driver with the failure of MTRR */
1170 pr_err("Unable to setup MTRR.\n");
1171 } else {
1172 share->mtrr.vram_added = 1;
1173 pr_info("MTRR added succesfully\n");
1174 }
1175 }
1176 #endif
1177
1178 memset_io(share->pvMem, 0, share->vidmem_size);
1179
1180 pr_info("sm%3x mmio address = %p\n", share->devid, share->pvReg);
1181
1182 pci_set_drvdata(pdev, share);
1183
1184 /* call chipInit routine */
1185 hw_sm750_inithw(share, pdev);
1186
1187 /* allocate frame buffer info structor according to g_dualview */
1188 fbidx = 0;
1189 ALLOC_FB:
1190 info[fbidx] = framebuffer_alloc(sizeof(struct lynxfb_par), &pdev->dev);
1191 if (!info[fbidx]) {
1192 pr_err("Could not allocate framebuffer #%d.\n", fbidx);
1193 if (fbidx == 0)
1194 goto err_info0_alloc;
1195 else
1196 goto err_info1_alloc;
1197 } else {
1198 struct lynxfb_par *par;
1199 int errno;
1200
1201 pr_info("framebuffer #%d alloc okay\n", fbidx);
1202 share->fbinfo[fbidx] = info[fbidx];
1203 par = info[fbidx]->par;
1204 par->share = share;
1205
1206 /* set fb_info structure */
1207 if (lynxfb_set_fbinfo(info[fbidx], fbidx)) {
1208 pr_err("Failed to initial fb_info #%d.\n", fbidx);
1209 if (fbidx == 0)
1210 goto err_info0_set;
1211 else
1212 goto err_info1_set;
1213 }
1214
1215 /* register frame buffer */
1216 pr_info("Ready to register framebuffer #%d.\n", fbidx);
1217 errno = register_framebuffer(info[fbidx]);
1218 if (errno < 0) {
1219 pr_err("Failed to register fb_info #%d. err %d\n",
1220 fbidx,
1221 errno);
1222 if (fbidx == 0)
1223 goto err_register0;
1224 else
1225 goto err_register1;
1226 }
1227 pr_info("Accomplished register framebuffer #%d.\n", fbidx);
1228 }
1229
1230 /* no dual view by far */
1231 fbidx++;
1232 if (share->dual && fbidx < 2)
1233 goto ALLOC_FB;
1234
1235 return 0;
1236
1237 err_register1:
1238 err_info1_set:
1239 framebuffer_release(info[1]);
1240 err_info1_alloc:
1241 unregister_framebuffer(info[0]);
1242 err_register0:
1243 err_info0_set:
1244 framebuffer_release(info[0]);
1245 err_info0_alloc:
1246 err_map:
1247 kfree(spec_share);
1248 err_share:
1249 err_enable:
1250 return -ENODEV;
1251 }
1252
lynxfb_pci_remove(struct pci_dev * pdev)1253 static void lynxfb_pci_remove(struct pci_dev *pdev)
1254 {
1255 struct fb_info *info;
1256 struct lynx_share *share;
1257 void *spec_share;
1258 struct lynxfb_par *par;
1259 int cnt;
1260
1261 cnt = 2;
1262 share = pci_get_drvdata(pdev);
1263
1264 while (cnt-- > 0) {
1265 info = share->fbinfo[cnt];
1266 if (!info)
1267 continue;
1268 par = info->par;
1269
1270 unregister_framebuffer(info);
1271 /* clean crtc & output allocations */
1272 par->crtc.clear(&par->crtc);
1273 par->output.clear(&par->output);
1274 /* release frame buffer */
1275 framebuffer_release(info);
1276 }
1277 #ifdef CONFIG_MTRR
1278 if (share->mtrr.vram_added)
1279 mtrr_del(share->mtrr.vram,
1280 share->vidmem_start,
1281 share->vidmem_size);
1282 #endif
1283
1284 iounmap(share->pvReg);
1285 iounmap(share->pvMem);
1286 spec_share = container_of(share, struct sm750_share, share);
1287 kfree(g_settings);
1288 kfree(spec_share);
1289 pci_set_drvdata(pdev, NULL);
1290 }
1291
lynxfb_setup(char * options)1292 static int __init lynxfb_setup(char *options)
1293 {
1294 int len;
1295 char *opt, *tmp;
1296
1297
1298 if (!options || !*options) {
1299 pr_warn("no options.\n");
1300 return 0;
1301 }
1302
1303 pr_info("options:%s\n", options);
1304
1305 len = strlen(options) + 1;
1306 g_settings = kzalloc(len, GFP_KERNEL);
1307 if (!g_settings)
1308 return -ENOMEM;
1309
1310 tmp = g_settings;
1311
1312 /* Notes:
1313 char * strsep(char **s,const char * ct);
1314 @s: the string to be searched
1315 @ct :the characters to search for
1316
1317 strsep() updates @options to pointer after the first found token
1318 it also returns the pointer ahead the token.
1319 */
1320 while ((opt = strsep(&options, ":")) != NULL) {
1321 /* options that mean for any lynx chips are configured here */
1322 if (!strncmp(opt, "noaccel", strlen("noaccel")))
1323 g_noaccel = 1;
1324 #ifdef CONFIG_MTRR
1325 else if (!strncmp(opt, "nomtrr", strlen("nomtrr")))
1326 g_nomtrr = 1;
1327 #endif
1328 else if (!strncmp(opt, "dual", strlen("dual")))
1329 g_dualview = 1;
1330 else {
1331 strcat(tmp, opt);
1332 tmp += strlen(opt);
1333 if (options != NULL)
1334 *tmp++ = ':';
1335 else
1336 *tmp++ = 0;
1337 }
1338 }
1339
1340 /* misc g_settings are transport to chip specific routines */
1341 pr_info("parameter left for chip specific analysis:%s\n", g_settings);
1342 return 0;
1343 }
1344
1345 static struct pci_device_id smi_pci_table[] = {
1346 { PCI_DEVICE(0x126f, 0x0750), },
1347 {0,}
1348 };
1349
1350 MODULE_DEVICE_TABLE(pci, smi_pci_table);
1351
1352 static struct pci_driver lynxfb_driver = {
1353 .name = "sm750fb",
1354 .id_table = smi_pci_table,
1355 .probe = lynxfb_pci_probe,
1356 .remove = lynxfb_pci_remove,
1357 #ifdef CONFIG_PM
1358 .suspend = lynxfb_suspend,
1359 .resume = lynxfb_resume,
1360 #endif
1361 };
1362
1363
lynxfb_init(void)1364 static int __init lynxfb_init(void)
1365 {
1366 char *option;
1367 int ret;
1368
1369 #ifdef MODULE
1370 option = g_option;
1371 #else
1372 if (fb_get_options("sm750fb", &option))
1373 return -ENODEV;
1374 #endif
1375
1376 lynxfb_setup(option);
1377 ret = pci_register_driver(&lynxfb_driver);
1378 return ret;
1379 }
1380 module_init(lynxfb_init);
1381
lynxfb_exit(void)1382 static void __exit lynxfb_exit(void)
1383 {
1384 pci_unregister_driver(&lynxfb_driver);
1385 }
1386 module_exit(lynxfb_exit);
1387
1388 module_param(g_option, charp, S_IRUGO);
1389
1390 MODULE_PARM_DESC(g_option,
1391 "\n\t\tCommon options:\n"
1392 "\t\tnoaccel:disable 2d capabilities\n"
1393 "\t\tnomtrr:disable MTRR attribute for video memory\n"
1394 "\t\tdualview:dual frame buffer feature enabled\n"
1395 "\t\tnohwc:disable hardware cursor\n"
1396 "\t\tUsual example:\n"
1397 "\t\tinsmod ./sm750fb.ko g_option=\"noaccel,nohwc,1280x1024-8@60\"\n"
1398 );
1399
1400 MODULE_AUTHOR("monk liu <monk.liu@siliconmotion.com>");
1401 MODULE_AUTHOR("Sudip Mukherjee <sudip@vectorindia.org>");
1402 MODULE_DESCRIPTION("Frame buffer driver for SM750 chipset");
1403 MODULE_LICENSE("GPL v2");
1404