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12#include <linux/fb.h>
13#include <linux/device.h>
14#include <linux/uaccess.h>
15#include <linux/platform_device.h>
16#include <linux/mm.h>
17#include <linux/omapfb.h>
18#include <linux/vmalloc.h>
19#include <linux/export.h>
20#include <linux/sizes.h>
21
22#include <video/omapfb_dss.h>
23#include <video/omapvrfb.h>
24
25#include "omapfb.h"
26
27static u8 get_mem_idx(struct omapfb_info *ofbi)
28{
29 if (ofbi->id == ofbi->region->id)
30 return 0;
31
32 return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;
33}
34
35static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,
36 u8 mem_idx)
37{
38 struct omapfb2_device *fbdev = ofbi->fbdev;
39
40 if (mem_idx & OMAPFB_MEM_IDX_ENABLED)
41 mem_idx &= OMAPFB_MEM_IDX_MASK;
42 else
43 mem_idx = ofbi->id;
44
45 if (mem_idx >= fbdev->num_fbs)
46 return NULL;
47
48 return &fbdev->regions[mem_idx];
49}
50
51static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
52{
53 struct omapfb_info *ofbi = FB2OFB(fbi);
54 struct omapfb2_device *fbdev = ofbi->fbdev;
55 struct omap_overlay *ovl;
56 struct omap_overlay_info old_info;
57 struct omapfb2_mem_region *old_rg, *new_rg;
58 int r = 0;
59
60 DBG("omapfb_setup_plane\n");
61
62 if (ofbi->num_overlays == 0) {
63 r = -EINVAL;
64 goto out;
65 }
66
67
68 ovl = ofbi->overlays[0];
69
70 old_rg = ofbi->region;
71 new_rg = get_mem_region(ofbi, pi->mem_idx);
72 if (!new_rg) {
73 r = -EINVAL;
74 goto out;
75 }
76
77
78 if (old_rg->id < new_rg->id) {
79 omapfb_get_mem_region(old_rg);
80 omapfb_get_mem_region(new_rg);
81 } else if (new_rg->id < old_rg->id) {
82 omapfb_get_mem_region(new_rg);
83 omapfb_get_mem_region(old_rg);
84 } else
85 omapfb_get_mem_region(old_rg);
86
87 if (pi->enabled && !new_rg->size) {
88
89
90
91
92 r = -EINVAL;
93 goto put_mem;
94 }
95
96 ovl->get_overlay_info(ovl, &old_info);
97
98 if (old_rg != new_rg) {
99 ofbi->region = new_rg;
100 set_fb_fix(fbi);
101 }
102
103 if (!pi->enabled) {
104 r = ovl->disable(ovl);
105 if (r)
106 goto undo;
107 }
108
109 if (pi->enabled) {
110 r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,
111 pi->out_width, pi->out_height);
112 if (r)
113 goto undo;
114 } else {
115 struct omap_overlay_info info;
116
117 ovl->get_overlay_info(ovl, &info);
118
119 info.pos_x = pi->pos_x;
120 info.pos_y = pi->pos_y;
121 info.out_width = pi->out_width;
122 info.out_height = pi->out_height;
123
124 r = ovl->set_overlay_info(ovl, &info);
125 if (r)
126 goto undo;
127 }
128
129 if (ovl->manager) {
130 r = ovl->manager->apply(ovl->manager);
131 if (r)
132 goto undo;
133 }
134
135 if (pi->enabled) {
136 r = ovl->enable(ovl);
137 if (r)
138 goto undo;
139 }
140
141
142 if (old_rg->id > new_rg->id) {
143 omapfb_put_mem_region(old_rg);
144 omapfb_put_mem_region(new_rg);
145 } else if (new_rg->id > old_rg->id) {
146 omapfb_put_mem_region(new_rg);
147 omapfb_put_mem_region(old_rg);
148 } else
149 omapfb_put_mem_region(old_rg);
150
151 return 0;
152
153 undo:
154 if (old_rg != new_rg) {
155 ofbi->region = old_rg;
156 set_fb_fix(fbi);
157 }
158
159 ovl->set_overlay_info(ovl, &old_info);
160 put_mem:
161
162 if (old_rg->id > new_rg->id) {
163 omapfb_put_mem_region(old_rg);
164 omapfb_put_mem_region(new_rg);
165 } else if (new_rg->id > old_rg->id) {
166 omapfb_put_mem_region(new_rg);
167 omapfb_put_mem_region(old_rg);
168 } else
169 omapfb_put_mem_region(old_rg);
170 out:
171 dev_err(fbdev->dev, "setup_plane failed\n");
172
173 return r;
174}
175
176static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
177{
178 struct omapfb_info *ofbi = FB2OFB(fbi);
179
180 if (ofbi->num_overlays == 0) {
181 memset(pi, 0, sizeof(*pi));
182 } else {
183 struct omap_overlay *ovl;
184 struct omap_overlay_info ovli;
185
186 ovl = ofbi->overlays[0];
187 ovl->get_overlay_info(ovl, &ovli);
188
189 pi->pos_x = ovli.pos_x;
190 pi->pos_y = ovli.pos_y;
191 pi->enabled = ovl->is_enabled(ovl);
192 pi->channel_out = 0;
193 pi->mirror = 0;
194 pi->mem_idx = get_mem_idx(ofbi);
195 pi->out_width = ovli.out_width;
196 pi->out_height = ovli.out_height;
197 }
198
199 return 0;
200}
201
202static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
203{
204 struct omapfb_info *ofbi = FB2OFB(fbi);
205 struct omapfb2_device *fbdev = ofbi->fbdev;
206 struct omap_dss_device *display = fb2display(fbi);
207 struct omapfb2_mem_region *rg;
208 int r = 0, i;
209 size_t size;
210
211 if (mi->type != OMAPFB_MEMTYPE_SDRAM)
212 return -EINVAL;
213
214 size = PAGE_ALIGN(mi->size);
215
216 if (display && display->driver->sync)
217 display->driver->sync(display);
218
219 rg = ofbi->region;
220
221 down_write_nested(&rg->lock, rg->id);
222 atomic_inc(&rg->lock_count);
223
224 if (rg->size == size && rg->type == mi->type)
225 goto out;
226
227 if (atomic_read(&rg->map_count)) {
228 r = -EBUSY;
229 goto out;
230 }
231
232 for (i = 0; i < fbdev->num_fbs; i++) {
233 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
234 int j;
235
236 if (ofbi2->region != rg)
237 continue;
238
239 for (j = 0; j < ofbi2->num_overlays; j++) {
240 struct omap_overlay *ovl;
241 ovl = ofbi2->overlays[j];
242 if (ovl->is_enabled(ovl)) {
243 r = -EBUSY;
244 goto out;
245 }
246 }
247 }
248
249 r = omapfb_realloc_fbmem(fbi, size, mi->type);
250 if (r) {
251 dev_err(fbdev->dev, "realloc fbmem failed\n");
252 goto out;
253 }
254
255 out:
256 atomic_dec(&rg->lock_count);
257 up_write(&rg->lock);
258
259 return r;
260}
261
262static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
263{
264 struct omapfb_info *ofbi = FB2OFB(fbi);
265 struct omapfb2_mem_region *rg;
266
267 rg = omapfb_get_mem_region(ofbi->region);
268 memset(mi, 0, sizeof(*mi));
269
270 mi->size = rg->size;
271 mi->type = rg->type;
272
273 omapfb_put_mem_region(rg);
274
275 return 0;
276}
277
278static int omapfb_update_window(struct fb_info *fbi,
279 u32 x, u32 y, u32 w, u32 h)
280{
281 struct omap_dss_device *display = fb2display(fbi);
282 u16 dw, dh;
283
284 if (!display)
285 return 0;
286
287 if (w == 0 || h == 0)
288 return 0;
289
290 display->driver->get_resolution(display, &dw, &dh);
291
292 if (x + w > dw || y + h > dh)
293 return -EINVAL;
294
295 return display->driver->update(display, x, y, w, h);
296}
297
298int omapfb_set_update_mode(struct fb_info *fbi,
299 enum omapfb_update_mode mode)
300{
301 struct omap_dss_device *display = fb2display(fbi);
302 struct omapfb_info *ofbi = FB2OFB(fbi);
303 struct omapfb2_device *fbdev = ofbi->fbdev;
304 struct omapfb_display_data *d;
305 int r;
306
307 if (!display)
308 return -EINVAL;
309
310 if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
311 return -EINVAL;
312
313 omapfb_lock(fbdev);
314
315 d = get_display_data(fbdev, display);
316
317 if (d->update_mode == mode) {
318 omapfb_unlock(fbdev);
319 return 0;
320 }
321
322 r = 0;
323
324 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
325 if (mode == OMAPFB_AUTO_UPDATE)
326 omapfb_start_auto_update(fbdev, display);
327 else
328 omapfb_stop_auto_update(fbdev, display);
329
330 d->update_mode = mode;
331 } else {
332 if (mode == OMAPFB_MANUAL_UPDATE)
333 r = -EINVAL;
334 }
335
336 omapfb_unlock(fbdev);
337
338 return r;
339}
340
341int omapfb_get_update_mode(struct fb_info *fbi,
342 enum omapfb_update_mode *mode)
343{
344 struct omap_dss_device *display = fb2display(fbi);
345 struct omapfb_info *ofbi = FB2OFB(fbi);
346 struct omapfb2_device *fbdev = ofbi->fbdev;
347 struct omapfb_display_data *d;
348
349 if (!display)
350 return -EINVAL;
351
352 omapfb_lock(fbdev);
353
354 d = get_display_data(fbdev, display);
355
356 *mode = d->update_mode;
357
358 omapfb_unlock(fbdev);
359
360 return 0;
361}
362
363
364static struct omapfb_color_key omapfb_color_keys[2];
365
366static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
367 struct omapfb_color_key *ck)
368{
369 struct omap_overlay_manager_info info;
370 enum omap_dss_trans_key_type kt;
371 int r;
372
373 mgr->get_manager_info(mgr, &info);
374
375 if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
376 info.trans_enabled = false;
377 omapfb_color_keys[mgr->id] = *ck;
378
379 r = mgr->set_manager_info(mgr, &info);
380 if (r)
381 return r;
382
383 r = mgr->apply(mgr);
384
385 return r;
386 }
387
388 switch (ck->key_type) {
389 case OMAPFB_COLOR_KEY_GFX_DST:
390 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
391 break;
392 case OMAPFB_COLOR_KEY_VID_SRC:
393 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
394 break;
395 default:
396 return -EINVAL;
397 }
398
399 info.default_color = ck->background;
400 info.trans_key = ck->trans_key;
401 info.trans_key_type = kt;
402 info.trans_enabled = true;
403
404 omapfb_color_keys[mgr->id] = *ck;
405
406 r = mgr->set_manager_info(mgr, &info);
407 if (r)
408 return r;
409
410 r = mgr->apply(mgr);
411
412 return r;
413}
414
415static int omapfb_set_color_key(struct fb_info *fbi,
416 struct omapfb_color_key *ck)
417{
418 struct omapfb_info *ofbi = FB2OFB(fbi);
419 struct omapfb2_device *fbdev = ofbi->fbdev;
420 int r;
421 int i;
422 struct omap_overlay_manager *mgr = NULL;
423
424 omapfb_lock(fbdev);
425
426 for (i = 0; i < ofbi->num_overlays; i++) {
427 if (ofbi->overlays[i]->manager) {
428 mgr = ofbi->overlays[i]->manager;
429 break;
430 }
431 }
432
433 if (!mgr) {
434 r = -EINVAL;
435 goto err;
436 }
437
438 r = _omapfb_set_color_key(mgr, ck);
439err:
440 omapfb_unlock(fbdev);
441
442 return r;
443}
444
445static int omapfb_get_color_key(struct fb_info *fbi,
446 struct omapfb_color_key *ck)
447{
448 struct omapfb_info *ofbi = FB2OFB(fbi);
449 struct omapfb2_device *fbdev = ofbi->fbdev;
450 struct omap_overlay_manager *mgr = NULL;
451 int r = 0;
452 int i;
453
454 omapfb_lock(fbdev);
455
456 for (i = 0; i < ofbi->num_overlays; i++) {
457 if (ofbi->overlays[i]->manager) {
458 mgr = ofbi->overlays[i]->manager;
459 break;
460 }
461 }
462
463 if (!mgr) {
464 r = -EINVAL;
465 goto err;
466 }
467
468 *ck = omapfb_color_keys[mgr->id];
469err:
470 omapfb_unlock(fbdev);
471
472 return r;
473}
474
475static int omapfb_memory_read(struct fb_info *fbi,
476 struct omapfb_memory_read *mr)
477{
478 struct omap_dss_device *display = fb2display(fbi);
479 void *buf;
480 int r;
481
482 if (!display || !display->driver->memory_read)
483 return -ENOENT;
484
485 if (mr->w > 4096 || mr->h > 4096)
486 return -EINVAL;
487
488 if (mr->w * mr->h * 3 > mr->buffer_size)
489 return -EINVAL;
490
491 buf = vmalloc(mr->buffer_size);
492 if (!buf) {
493 DBG("vmalloc failed\n");
494 return -ENOMEM;
495 }
496
497 r = display->driver->memory_read(display, buf, mr->buffer_size,
498 mr->x, mr->y, mr->w, mr->h);
499
500 if (r > 0) {
501 if (copy_to_user(mr->buffer, buf, r))
502 r = -EFAULT;
503 }
504
505 vfree(buf);
506
507 return r;
508}
509
510static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
511 struct omapfb_ovl_colormode *mode)
512{
513 int ovl_idx = mode->overlay_idx;
514 int mode_idx = mode->mode_idx;
515 struct omap_overlay *ovl;
516 enum omap_color_mode supported_modes;
517 struct fb_var_screeninfo var;
518 int i;
519
520 if (ovl_idx >= fbdev->num_overlays)
521 return -ENODEV;
522 ovl = fbdev->overlays[ovl_idx];
523 supported_modes = ovl->supported_modes;
524
525 mode_idx = mode->mode_idx;
526
527 for (i = 0; i < sizeof(supported_modes) * 8; i++) {
528 if (!(supported_modes & (1 << i)))
529 continue;
530
531
532
533
534
535 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
536 continue;
537
538 mode_idx--;
539 if (mode_idx < 0)
540 break;
541 }
542
543 if (i == sizeof(supported_modes) * 8)
544 return -ENOENT;
545
546 mode->bits_per_pixel = var.bits_per_pixel;
547 mode->nonstd = var.nonstd;
548 mode->red = var.red;
549 mode->green = var.green;
550 mode->blue = var.blue;
551 mode->transp = var.transp;
552
553 return 0;
554}
555
556static int omapfb_wait_for_go(struct fb_info *fbi)
557{
558 struct omapfb_info *ofbi = FB2OFB(fbi);
559 int r = 0;
560 int i;
561
562 for (i = 0; i < ofbi->num_overlays; ++i) {
563 struct omap_overlay *ovl = ofbi->overlays[i];
564 r = ovl->wait_for_go(ovl);
565 if (r)
566 break;
567 }
568
569 return r;
570}
571
572int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
573{
574 struct omapfb_info *ofbi = FB2OFB(fbi);
575 struct omapfb2_device *fbdev = ofbi->fbdev;
576 struct omap_dss_device *display = fb2display(fbi);
577 struct omap_overlay_manager *mgr;
578
579 union {
580 struct omapfb_update_window_old uwnd_o;
581 struct omapfb_update_window uwnd;
582 struct omapfb_plane_info plane_info;
583 struct omapfb_caps caps;
584 struct omapfb_mem_info mem_info;
585 struct omapfb_color_key color_key;
586 struct omapfb_ovl_colormode ovl_colormode;
587 enum omapfb_update_mode update_mode;
588 int test_num;
589 struct omapfb_memory_read memory_read;
590 struct omapfb_vram_info vram_info;
591 struct omapfb_tearsync_info tearsync_info;
592 struct omapfb_display_info display_info;
593 u32 crt;
594 } p;
595
596 int r = 0;
597
598 memset(&p, 0, sizeof(p));
599
600 switch (cmd) {
601 case OMAPFB_SYNC_GFX:
602 DBG("ioctl SYNC_GFX\n");
603 if (!display || !display->driver->sync) {
604
605
606 break;
607 }
608
609 r = display->driver->sync(display);
610 break;
611
612 case OMAPFB_UPDATE_WINDOW_OLD:
613 DBG("ioctl UPDATE_WINDOW_OLD\n");
614 if (!display || !display->driver->update) {
615 r = -EINVAL;
616 break;
617 }
618
619 if (copy_from_user(&p.uwnd_o,
620 (void __user *)arg,
621 sizeof(p.uwnd_o))) {
622 r = -EFAULT;
623 break;
624 }
625
626 r = omapfb_update_window(fbi, p.uwnd_o.x, p.uwnd_o.y,
627 p.uwnd_o.width, p.uwnd_o.height);
628 break;
629
630 case OMAPFB_UPDATE_WINDOW:
631 DBG("ioctl UPDATE_WINDOW\n");
632 if (!display || !display->driver->update) {
633 r = -EINVAL;
634 break;
635 }
636
637 if (copy_from_user(&p.uwnd, (void __user *)arg,
638 sizeof(p.uwnd))) {
639 r = -EFAULT;
640 break;
641 }
642
643 r = omapfb_update_window(fbi, p.uwnd.x, p.uwnd.y,
644 p.uwnd.width, p.uwnd.height);
645 break;
646
647 case OMAPFB_SETUP_PLANE:
648 DBG("ioctl SETUP_PLANE\n");
649 if (copy_from_user(&p.plane_info, (void __user *)arg,
650 sizeof(p.plane_info)))
651 r = -EFAULT;
652 else
653 r = omapfb_setup_plane(fbi, &p.plane_info);
654 break;
655
656 case OMAPFB_QUERY_PLANE:
657 DBG("ioctl QUERY_PLANE\n");
658 r = omapfb_query_plane(fbi, &p.plane_info);
659 if (r < 0)
660 break;
661 if (copy_to_user((void __user *)arg, &p.plane_info,
662 sizeof(p.plane_info)))
663 r = -EFAULT;
664 break;
665
666 case OMAPFB_SETUP_MEM:
667 DBG("ioctl SETUP_MEM\n");
668 if (copy_from_user(&p.mem_info, (void __user *)arg,
669 sizeof(p.mem_info)))
670 r = -EFAULT;
671 else
672 r = omapfb_setup_mem(fbi, &p.mem_info);
673 break;
674
675 case OMAPFB_QUERY_MEM:
676 DBG("ioctl QUERY_MEM\n");
677 r = omapfb_query_mem(fbi, &p.mem_info);
678 if (r < 0)
679 break;
680 if (copy_to_user((void __user *)arg, &p.mem_info,
681 sizeof(p.mem_info)))
682 r = -EFAULT;
683 break;
684
685 case OMAPFB_GET_CAPS:
686 DBG("ioctl GET_CAPS\n");
687 if (!display) {
688 r = -EINVAL;
689 break;
690 }
691
692 memset(&p.caps, 0, sizeof(p.caps));
693 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
694 p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
695 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
696 p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
697
698 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
699 r = -EFAULT;
700 break;
701
702 case OMAPFB_GET_OVERLAY_COLORMODE:
703 DBG("ioctl GET_OVERLAY_COLORMODE\n");
704 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
705 sizeof(p.ovl_colormode))) {
706 r = -EFAULT;
707 break;
708 }
709 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
710 if (r < 0)
711 break;
712 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
713 sizeof(p.ovl_colormode)))
714 r = -EFAULT;
715 break;
716
717 case OMAPFB_SET_UPDATE_MODE:
718 DBG("ioctl SET_UPDATE_MODE\n");
719 if (get_user(p.update_mode, (int __user *)arg))
720 r = -EFAULT;
721 else
722 r = omapfb_set_update_mode(fbi, p.update_mode);
723 break;
724
725 case OMAPFB_GET_UPDATE_MODE:
726 DBG("ioctl GET_UPDATE_MODE\n");
727 r = omapfb_get_update_mode(fbi, &p.update_mode);
728 if (r)
729 break;
730 if (put_user(p.update_mode,
731 (enum omapfb_update_mode __user *)arg))
732 r = -EFAULT;
733 break;
734
735 case OMAPFB_SET_COLOR_KEY:
736 DBG("ioctl SET_COLOR_KEY\n");
737 if (copy_from_user(&p.color_key, (void __user *)arg,
738 sizeof(p.color_key)))
739 r = -EFAULT;
740 else
741 r = omapfb_set_color_key(fbi, &p.color_key);
742 break;
743
744 case OMAPFB_GET_COLOR_KEY:
745 DBG("ioctl GET_COLOR_KEY\n");
746 r = omapfb_get_color_key(fbi, &p.color_key);
747 if (r)
748 break;
749 if (copy_to_user((void __user *)arg, &p.color_key,
750 sizeof(p.color_key)))
751 r = -EFAULT;
752 break;
753
754 case FBIO_WAITFORVSYNC:
755 if (get_user(p.crt, (__u32 __user *)arg)) {
756 r = -EFAULT;
757 break;
758 }
759 if (p.crt != 0) {
760 r = -ENODEV;
761 break;
762 }
763 fallthrough;
764
765 case OMAPFB_WAITFORVSYNC:
766 DBG("ioctl WAITFORVSYNC\n");
767
768 if (!display) {
769 r = -EINVAL;
770 break;
771 }
772
773 mgr = omapdss_find_mgr_from_display(display);
774 if (!mgr) {
775 r = -EINVAL;
776 break;
777 }
778
779 r = mgr->wait_for_vsync(mgr);
780 break;
781
782 case OMAPFB_WAITFORGO:
783 DBG("ioctl WAITFORGO\n");
784 if (!display) {
785 r = -EINVAL;
786 break;
787 }
788
789 r = omapfb_wait_for_go(fbi);
790 break;
791
792
793
794 case OMAPFB_LCD_TEST:
795 DBG("ioctl LCD_TEST\n");
796 if (get_user(p.test_num, (int __user *)arg)) {
797 r = -EFAULT;
798 break;
799 }
800 if (!display || !display->driver->run_test) {
801 r = -EINVAL;
802 break;
803 }
804
805 r = display->driver->run_test(display, p.test_num);
806
807 break;
808
809 case OMAPFB_CTRL_TEST:
810 DBG("ioctl CTRL_TEST\n");
811 if (get_user(p.test_num, (int __user *)arg)) {
812 r = -EFAULT;
813 break;
814 }
815 if (!display || !display->driver->run_test) {
816 r = -EINVAL;
817 break;
818 }
819
820 r = display->driver->run_test(display, p.test_num);
821
822 break;
823
824 case OMAPFB_MEMORY_READ:
825 DBG("ioctl MEMORY_READ\n");
826
827 if (copy_from_user(&p.memory_read, (void __user *)arg,
828 sizeof(p.memory_read))) {
829 r = -EFAULT;
830 break;
831 }
832
833 r = omapfb_memory_read(fbi, &p.memory_read);
834
835 break;
836
837 case OMAPFB_GET_VRAM_INFO: {
838 DBG("ioctl GET_VRAM_INFO\n");
839
840
841
842
843
844 p.vram_info.total = SZ_1M * 64;
845 p.vram_info.free = SZ_1M * 64;
846 p.vram_info.largest_free_block = SZ_1M * 64;
847
848 if (copy_to_user((void __user *)arg, &p.vram_info,
849 sizeof(p.vram_info)))
850 r = -EFAULT;
851 break;
852 }
853
854 case OMAPFB_SET_TEARSYNC: {
855 DBG("ioctl SET_TEARSYNC\n");
856
857 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
858 sizeof(p.tearsync_info))) {
859 r = -EFAULT;
860 break;
861 }
862
863 if (!display || !display->driver->enable_te) {
864 r = -ENODEV;
865 break;
866 }
867
868 r = display->driver->enable_te(display,
869 !!p.tearsync_info.enabled);
870
871 break;
872 }
873
874 case OMAPFB_GET_DISPLAY_INFO: {
875 u16 xres, yres;
876
877 DBG("ioctl GET_DISPLAY_INFO\n");
878
879 if (display == NULL) {
880 r = -ENODEV;
881 break;
882 }
883
884 display->driver->get_resolution(display, &xres, &yres);
885
886 p.display_info.xres = xres;
887 p.display_info.yres = yres;
888
889 if (display->driver->get_dimensions) {
890 u32 w, h;
891 display->driver->get_dimensions(display, &w, &h);
892 p.display_info.width = w;
893 p.display_info.height = h;
894 } else {
895 p.display_info.width = 0;
896 p.display_info.height = 0;
897 }
898
899 if (copy_to_user((void __user *)arg, &p.display_info,
900 sizeof(p.display_info)))
901 r = -EFAULT;
902 break;
903 }
904
905 default:
906 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
907 r = -EINVAL;
908 }
909
910 if (r < 0)
911 DBG("ioctl failed: %d\n", r);
912
913 return r;
914}
915
916
917
