/drivers/video/omap2/omapfb/omapfb-ioctl.c
C | 785 lines | 592 code | 156 blank | 37 comment | 103 complexity | 4cab0c1c3f2d3d423c2e03f9a47613a5 MD5 | raw file
Possible License(s): CC-BY-SA-3.0, GPL-2.0, LGPL-2.0, AGPL-1.0
1/*
2 * linux/drivers/video/omap2/omapfb-ioctl.c
3 *
4 * Copyright (C) 2008 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * Some code and ideas taken from drivers/video/omap/ driver
8 * by Imre Deak.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23#include <linux/fb.h>
24#include <linux/device.h>
25#include <linux/uaccess.h>
26#include <linux/platform_device.h>
27#include <linux/mm.h>
28#include <linux/omapfb.h>
29#include <linux/vmalloc.h>
30
31#include <plat/display.h>
32#include <plat/vrfb.h>
33#include <plat/vram.h>
34
35#include "omapfb.h"
36
37static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
38{
39 struct omapfb_info *ofbi = FB2OFB(fbi);
40 struct omapfb2_device *fbdev = ofbi->fbdev;
41 struct omap_overlay *ovl;
42 struct omap_overlay_info info;
43 int r = 0;
44
45 DBG("omapfb_setup_plane\n");
46
47 if (ofbi->num_overlays != 1) {
48 r = -EINVAL;
49 goto out;
50 }
51
52 /* XXX uses only the first overlay */
53 ovl = ofbi->overlays[0];
54
55 if (pi->enabled && !ofbi->region.size) {
56 /*
57 * This plane's memory was freed, can't enable it
58 * until it's reallocated.
59 */
60 r = -EINVAL;
61 goto out;
62 }
63
64 ovl->get_overlay_info(ovl, &info);
65
66 info.pos_x = pi->pos_x;
67 info.pos_y = pi->pos_y;
68 info.out_width = pi->out_width;
69 info.out_height = pi->out_height;
70 info.enabled = pi->enabled;
71
72 r = ovl->set_overlay_info(ovl, &info);
73 if (r)
74 goto out;
75
76 if (ovl->manager) {
77 r = ovl->manager->apply(ovl->manager);
78 if (r)
79 goto out;
80 }
81
82out:
83 if (r)
84 dev_err(fbdev->dev, "setup_plane failed\n");
85 return r;
86}
87
88static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
89{
90 struct omapfb_info *ofbi = FB2OFB(fbi);
91
92 if (ofbi->num_overlays != 1) {
93 memset(pi, 0, sizeof(*pi));
94 } else {
95 struct omap_overlay_info *ovli;
96 struct omap_overlay *ovl;
97
98 ovl = ofbi->overlays[0];
99 ovli = &ovl->info;
100
101 pi->pos_x = ovli->pos_x;
102 pi->pos_y = ovli->pos_y;
103 pi->enabled = ovli->enabled;
104 pi->channel_out = 0; /* xxx */
105 pi->mirror = 0;
106 pi->out_width = ovli->out_width;
107 pi->out_height = ovli->out_height;
108 }
109
110 return 0;
111}
112
113static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
114{
115 struct omapfb_info *ofbi = FB2OFB(fbi);
116 struct omapfb2_device *fbdev = ofbi->fbdev;
117 struct omapfb2_mem_region *rg;
118 int r, i;
119 size_t size;
120
121 if (mi->type > OMAPFB_MEMTYPE_MAX)
122 return -EINVAL;
123
124 size = PAGE_ALIGN(mi->size);
125
126 rg = &ofbi->region;
127
128 for (i = 0; i < ofbi->num_overlays; i++) {
129 if (ofbi->overlays[i]->info.enabled)
130 return -EBUSY;
131 }
132
133 if (rg->size != size || rg->type != mi->type) {
134 r = omapfb_realloc_fbmem(fbi, size, mi->type);
135 if (r) {
136 dev_err(fbdev->dev, "realloc fbmem failed\n");
137 return r;
138 }
139 }
140
141 return 0;
142}
143
144static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
145{
146 struct omapfb_info *ofbi = FB2OFB(fbi);
147 struct omapfb2_mem_region *rg;
148
149 rg = &ofbi->region;
150 memset(mi, 0, sizeof(*mi));
151
152 mi->size = rg->size;
153 mi->type = rg->type;
154
155 return 0;
156}
157
158static int omapfb_update_window_nolock(struct fb_info *fbi,
159 u32 x, u32 y, u32 w, u32 h)
160{
161 struct omap_dss_device *display = fb2display(fbi);
162 u16 dw, dh;
163
164 if (!display)
165 return 0;
166
167 if (w == 0 || h == 0)
168 return 0;
169
170 display->driver->get_resolution(display, &dw, &dh);
171
172 if (x + w > dw || y + h > dh)
173 return -EINVAL;
174
175 return display->driver->update(display, x, y, w, h);
176}
177
178/* This function is exported for SGX driver use */
179int omapfb_update_window(struct fb_info *fbi,
180 u32 x, u32 y, u32 w, u32 h)
181{
182 struct omapfb_info *ofbi = FB2OFB(fbi);
183 struct omapfb2_device *fbdev = ofbi->fbdev;
184 int r;
185
186 omapfb_lock(fbdev);
187 lock_fb_info(fbi);
188
189 r = omapfb_update_window_nolock(fbi, x, y, w, h);
190
191 unlock_fb_info(fbi);
192 omapfb_unlock(fbdev);
193
194 return r;
195}
196EXPORT_SYMBOL(omapfb_update_window);
197
198static int omapfb_set_update_mode(struct fb_info *fbi,
199 enum omapfb_update_mode mode)
200{
201 struct omap_dss_device *display = fb2display(fbi);
202 enum omap_dss_update_mode um;
203 int r;
204
205 if (!display || !display->driver->set_update_mode)
206 return -EINVAL;
207
208 switch (mode) {
209 case OMAPFB_UPDATE_DISABLED:
210 um = OMAP_DSS_UPDATE_DISABLED;
211 break;
212
213 case OMAPFB_AUTO_UPDATE:
214 um = OMAP_DSS_UPDATE_AUTO;
215 break;
216
217 case OMAPFB_MANUAL_UPDATE:
218 um = OMAP_DSS_UPDATE_MANUAL;
219 break;
220
221 default:
222 return -EINVAL;
223 }
224
225 r = display->driver->set_update_mode(display, um);
226
227 return r;
228}
229
230static int omapfb_get_update_mode(struct fb_info *fbi,
231 enum omapfb_update_mode *mode)
232{
233 struct omap_dss_device *display = fb2display(fbi);
234 enum omap_dss_update_mode m;
235
236 if (!display)
237 return -EINVAL;
238
239 if (!display->driver->get_update_mode) {
240 *mode = OMAPFB_AUTO_UPDATE;
241 return 0;
242 }
243
244 m = display->driver->get_update_mode(display);
245
246 switch (m) {
247 case OMAP_DSS_UPDATE_DISABLED:
248 *mode = OMAPFB_UPDATE_DISABLED;
249 break;
250 case OMAP_DSS_UPDATE_AUTO:
251 *mode = OMAPFB_AUTO_UPDATE;
252 break;
253 case OMAP_DSS_UPDATE_MANUAL:
254 *mode = OMAPFB_MANUAL_UPDATE;
255 break;
256 default:
257 BUG();
258 }
259
260 return 0;
261}
262
263/* XXX this color key handling is a hack... */
264static struct omapfb_color_key omapfb_color_keys[2];
265
266static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
267 struct omapfb_color_key *ck)
268{
269 struct omap_overlay_manager_info info;
270 enum omap_dss_trans_key_type kt;
271 int r;
272
273 mgr->get_manager_info(mgr, &info);
274
275 if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
276 info.trans_enabled = false;
277 omapfb_color_keys[mgr->id] = *ck;
278
279 r = mgr->set_manager_info(mgr, &info);
280 if (r)
281 return r;
282
283 r = mgr->apply(mgr);
284
285 return r;
286 }
287
288 switch (ck->key_type) {
289 case OMAPFB_COLOR_KEY_GFX_DST:
290 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
291 break;
292 case OMAPFB_COLOR_KEY_VID_SRC:
293 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
294 break;
295 default:
296 return -EINVAL;
297 }
298
299 info.default_color = ck->background;
300 info.trans_key = ck->trans_key;
301 info.trans_key_type = kt;
302 info.trans_enabled = true;
303
304 omapfb_color_keys[mgr->id] = *ck;
305
306 r = mgr->set_manager_info(mgr, &info);
307 if (r)
308 return r;
309
310 r = mgr->apply(mgr);
311
312 return r;
313}
314
315static int omapfb_set_color_key(struct fb_info *fbi,
316 struct omapfb_color_key *ck)
317{
318 struct omapfb_info *ofbi = FB2OFB(fbi);
319 struct omapfb2_device *fbdev = ofbi->fbdev;
320 int r;
321 int i;
322 struct omap_overlay_manager *mgr = NULL;
323
324 omapfb_lock(fbdev);
325
326 for (i = 0; i < ofbi->num_overlays; i++) {
327 if (ofbi->overlays[i]->manager) {
328 mgr = ofbi->overlays[i]->manager;
329 break;
330 }
331 }
332
333 if (!mgr) {
334 r = -EINVAL;
335 goto err;
336 }
337
338 r = _omapfb_set_color_key(mgr, ck);
339err:
340 omapfb_unlock(fbdev);
341
342 return r;
343}
344
345static int omapfb_get_color_key(struct fb_info *fbi,
346 struct omapfb_color_key *ck)
347{
348 struct omapfb_info *ofbi = FB2OFB(fbi);
349 struct omapfb2_device *fbdev = ofbi->fbdev;
350 struct omap_overlay_manager *mgr = NULL;
351 int r = 0;
352 int i;
353
354 omapfb_lock(fbdev);
355
356 for (i = 0; i < ofbi->num_overlays; i++) {
357 if (ofbi->overlays[i]->manager) {
358 mgr = ofbi->overlays[i]->manager;
359 break;
360 }
361 }
362
363 if (!mgr) {
364 r = -EINVAL;
365 goto err;
366 }
367
368 *ck = omapfb_color_keys[mgr->id];
369err:
370 omapfb_unlock(fbdev);
371
372 return r;
373}
374
375static int omapfb_memory_read(struct fb_info *fbi,
376 struct omapfb_memory_read *mr)
377{
378 struct omap_dss_device *display = fb2display(fbi);
379 void *buf;
380 int r;
381
382 if (!display || !display->driver->memory_read)
383 return -ENOENT;
384
385 if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
386 return -EFAULT;
387
388 if (mr->w * mr->h * 3 > mr->buffer_size)
389 return -EINVAL;
390
391 buf = vmalloc(mr->buffer_size);
392 if (!buf) {
393 DBG("vmalloc failed\n");
394 return -ENOMEM;
395 }
396
397 r = display->driver->memory_read(display, buf, mr->buffer_size,
398 mr->x, mr->y, mr->w, mr->h);
399
400 if (r > 0) {
401 if (copy_to_user(mr->buffer, buf, mr->buffer_size))
402 r = -EFAULT;
403 }
404
405 vfree(buf);
406
407 return r;
408}
409
410static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
411 struct omapfb_ovl_colormode *mode)
412{
413 int ovl_idx = mode->overlay_idx;
414 int mode_idx = mode->mode_idx;
415 struct omap_overlay *ovl;
416 enum omap_color_mode supported_modes;
417 struct fb_var_screeninfo var;
418 int i;
419
420 if (ovl_idx >= fbdev->num_overlays)
421 return -ENODEV;
422 ovl = fbdev->overlays[ovl_idx];
423 supported_modes = ovl->supported_modes;
424
425 mode_idx = mode->mode_idx;
426
427 for (i = 0; i < sizeof(supported_modes) * 8; i++) {
428 if (!(supported_modes & (1 << i)))
429 continue;
430 /*
431 * It's possible that the FB doesn't support a mode
432 * that is supported by the overlay, so call the
433 * following here.
434 */
435 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
436 continue;
437
438 mode_idx--;
439 if (mode_idx < 0)
440 break;
441 }
442
443 if (i == sizeof(supported_modes) * 8)
444 return -ENOENT;
445
446 mode->bits_per_pixel = var.bits_per_pixel;
447 mode->nonstd = var.nonstd;
448 mode->red = var.red;
449 mode->green = var.green;
450 mode->blue = var.blue;
451 mode->transp = var.transp;
452
453 return 0;
454}
455
456static int omapfb_wait_for_go(struct fb_info *fbi)
457{
458 struct omapfb_info *ofbi = FB2OFB(fbi);
459 int r = 0;
460 int i;
461
462 for (i = 0; i < ofbi->num_overlays; ++i) {
463 struct omap_overlay *ovl = ofbi->overlays[i];
464 r = ovl->wait_for_go(ovl);
465 if (r)
466 break;
467 }
468
469 return r;
470}
471
472int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
473{
474 struct omapfb_info *ofbi = FB2OFB(fbi);
475 struct omapfb2_device *fbdev = ofbi->fbdev;
476 struct omap_dss_device *display = fb2display(fbi);
477
478 union {
479 struct omapfb_update_window_old uwnd_o;
480 struct omapfb_update_window uwnd;
481 struct omapfb_plane_info plane_info;
482 struct omapfb_caps caps;
483 struct omapfb_mem_info mem_info;
484 struct omapfb_color_key color_key;
485 struct omapfb_ovl_colormode ovl_colormode;
486 enum omapfb_update_mode update_mode;
487 int test_num;
488 struct omapfb_memory_read memory_read;
489 struct omapfb_vram_info vram_info;
490 struct omapfb_tearsync_info tearsync_info;
491 struct omapfb_display_info display_info;
492 } p;
493
494 int r = 0;
495
496 switch (cmd) {
497 case OMAPFB_SYNC_GFX:
498 DBG("ioctl SYNC_GFX\n");
499 if (!display || !display->driver->sync) {
500 /* DSS1 never returns an error here, so we neither */
501 /*r = -EINVAL;*/
502 break;
503 }
504
505 r = display->driver->sync(display);
506 break;
507
508 case OMAPFB_UPDATE_WINDOW_OLD:
509 DBG("ioctl UPDATE_WINDOW_OLD\n");
510 if (!display || !display->driver->update) {
511 r = -EINVAL;
512 break;
513 }
514
515 if (copy_from_user(&p.uwnd_o,
516 (void __user *)arg,
517 sizeof(p.uwnd_o))) {
518 r = -EFAULT;
519 break;
520 }
521
522 r = omapfb_update_window_nolock(fbi, p.uwnd_o.x, p.uwnd_o.y,
523 p.uwnd_o.width, p.uwnd_o.height);
524 break;
525
526 case OMAPFB_UPDATE_WINDOW:
527 DBG("ioctl UPDATE_WINDOW\n");
528 if (!display || !display->driver->update) {
529 r = -EINVAL;
530 break;
531 }
532
533 if (copy_from_user(&p.uwnd, (void __user *)arg,
534 sizeof(p.uwnd))) {
535 r = -EFAULT;
536 break;
537 }
538
539 r = omapfb_update_window_nolock(fbi, p.uwnd.x, p.uwnd.y,
540 p.uwnd.width, p.uwnd.height);
541 break;
542
543 case OMAPFB_SETUP_PLANE:
544 DBG("ioctl SETUP_PLANE\n");
545 if (copy_from_user(&p.plane_info, (void __user *)arg,
546 sizeof(p.plane_info)))
547 r = -EFAULT;
548 else
549 r = omapfb_setup_plane(fbi, &p.plane_info);
550 break;
551
552 case OMAPFB_QUERY_PLANE:
553 DBG("ioctl QUERY_PLANE\n");
554 r = omapfb_query_plane(fbi, &p.plane_info);
555 if (r < 0)
556 break;
557 if (copy_to_user((void __user *)arg, &p.plane_info,
558 sizeof(p.plane_info)))
559 r = -EFAULT;
560 break;
561
562 case OMAPFB_SETUP_MEM:
563 DBG("ioctl SETUP_MEM\n");
564 if (copy_from_user(&p.mem_info, (void __user *)arg,
565 sizeof(p.mem_info)))
566 r = -EFAULT;
567 else
568 r = omapfb_setup_mem(fbi, &p.mem_info);
569 break;
570
571 case OMAPFB_QUERY_MEM:
572 DBG("ioctl QUERY_MEM\n");
573 r = omapfb_query_mem(fbi, &p.mem_info);
574 if (r < 0)
575 break;
576 if (copy_to_user((void __user *)arg, &p.mem_info,
577 sizeof(p.mem_info)))
578 r = -EFAULT;
579 break;
580
581 case OMAPFB_GET_CAPS:
582 DBG("ioctl GET_CAPS\n");
583 if (!display) {
584 r = -EINVAL;
585 break;
586 }
587
588 memset(&p.caps, 0, sizeof(p.caps));
589 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
590 p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
591 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
592 p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
593
594 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
595 r = -EFAULT;
596 break;
597
598 case OMAPFB_GET_OVERLAY_COLORMODE:
599 DBG("ioctl GET_OVERLAY_COLORMODE\n");
600 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
601 sizeof(p.ovl_colormode))) {
602 r = -EFAULT;
603 break;
604 }
605 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
606 if (r < 0)
607 break;
608 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
609 sizeof(p.ovl_colormode)))
610 r = -EFAULT;
611 break;
612
613 case OMAPFB_SET_UPDATE_MODE:
614 DBG("ioctl SET_UPDATE_MODE\n");
615 if (get_user(p.update_mode, (int __user *)arg))
616 r = -EFAULT;
617 else
618 r = omapfb_set_update_mode(fbi, p.update_mode);
619 break;
620
621 case OMAPFB_GET_UPDATE_MODE:
622 DBG("ioctl GET_UPDATE_MODE\n");
623 r = omapfb_get_update_mode(fbi, &p.update_mode);
624 if (r)
625 break;
626 if (put_user(p.update_mode,
627 (enum omapfb_update_mode __user *)arg))
628 r = -EFAULT;
629 break;
630
631 case OMAPFB_SET_COLOR_KEY:
632 DBG("ioctl SET_COLOR_KEY\n");
633 if (copy_from_user(&p.color_key, (void __user *)arg,
634 sizeof(p.color_key)))
635 r = -EFAULT;
636 else
637 r = omapfb_set_color_key(fbi, &p.color_key);
638 break;
639
640 case OMAPFB_GET_COLOR_KEY:
641 DBG("ioctl GET_COLOR_KEY\n");
642 r = omapfb_get_color_key(fbi, &p.color_key);
643 if (r)
644 break;
645 if (copy_to_user((void __user *)arg, &p.color_key,
646 sizeof(p.color_key)))
647 r = -EFAULT;
648 break;
649
650 case OMAPFB_WAITFORVSYNC:
651 DBG("ioctl WAITFORVSYNC\n");
652 if (!display) {
653 r = -EINVAL;
654 break;
655 }
656
657 r = display->manager->wait_for_vsync(display->manager);
658 break;
659
660 case OMAPFB_WAITFORGO:
661 DBG("ioctl WAITFORGO\n");
662 if (!display) {
663 r = -EINVAL;
664 break;
665 }
666
667 r = omapfb_wait_for_go(fbi);
668 break;
669
670 /* LCD and CTRL tests do the same thing for backward
671 * compatibility */
672 case OMAPFB_LCD_TEST:
673 DBG("ioctl LCD_TEST\n");
674 if (get_user(p.test_num, (int __user *)arg)) {
675 r = -EFAULT;
676 break;
677 }
678 if (!display || !display->driver->run_test) {
679 r = -EINVAL;
680 break;
681 }
682
683 r = display->driver->run_test(display, p.test_num);
684
685 break;
686
687 case OMAPFB_CTRL_TEST:
688 DBG("ioctl CTRL_TEST\n");
689 if (get_user(p.test_num, (int __user *)arg)) {
690 r = -EFAULT;
691 break;
692 }
693 if (!display || !display->driver->run_test) {
694 r = -EINVAL;
695 break;
696 }
697
698 r = display->driver->run_test(display, p.test_num);
699
700 break;
701
702 case OMAPFB_MEMORY_READ:
703 DBG("ioctl MEMORY_READ\n");
704
705 if (copy_from_user(&p.memory_read, (void __user *)arg,
706 sizeof(p.memory_read))) {
707 r = -EFAULT;
708 break;
709 }
710
711 r = omapfb_memory_read(fbi, &p.memory_read);
712
713 break;
714
715 case OMAPFB_GET_VRAM_INFO: {
716 unsigned long vram, free, largest;
717
718 DBG("ioctl GET_VRAM_INFO\n");
719
720 omap_vram_get_info(&vram, &free, &largest);
721 p.vram_info.total = vram;
722 p.vram_info.free = free;
723 p.vram_info.largest_free_block = largest;
724
725 if (copy_to_user((void __user *)arg, &p.vram_info,
726 sizeof(p.vram_info)))
727 r = -EFAULT;
728 break;
729 }
730
731 case OMAPFB_SET_TEARSYNC: {
732 DBG("ioctl SET_TEARSYNC\n");
733
734 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
735 sizeof(p.tearsync_info))) {
736 r = -EFAULT;
737 break;
738 }
739
740 if (!display->driver->enable_te) {
741 r = -ENODEV;
742 break;
743 }
744
745 r = display->driver->enable_te(display,
746 !!p.tearsync_info.enabled);
747
748 break;
749 }
750
751 case OMAPFB_GET_DISPLAY_INFO: {
752 u16 xres, yres;
753
754 DBG("ioctl GET_DISPLAY_INFO\n");
755
756 if (display == NULL) {
757 r = -ENODEV;
758 break;
759 }
760
761 display->driver->get_resolution(display, &xres, &yres);
762
763 p.display_info.xres = xres;
764 p.display_info.yres = yres;
765 p.display_info.width = 0;
766 p.display_info.height = 0;
767
768 if (copy_to_user((void __user *)arg, &p.display_info,
769 sizeof(p.display_info)))
770 r = -EFAULT;
771 break;
772 }
773
774 default:
775 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
776 r = -EINVAL;
777 }
778
779 if (r < 0)
780 DBG("ioctl failed: %d\n", r);
781
782 return r;
783}
784
785