OMAPDSS: Add methods for skipping display initialization
[android-sdk/kernel-video.git] / drivers / video / fbdev / omap2 / omapfb / omapfb-ioctl.c
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  */
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 #include <linux/export.h>
31 #include <linux/sizes.h>
33 #include <video/omapdss.h>
34 #include <video/omapvrfb.h>
36 #include "omapfb.h"
38 static u8 get_mem_idx(struct omapfb_info *ofbi)
39 {
40         if (ofbi->id == ofbi->region->id)
41                 return 0;
43         return OMAPFB_MEM_IDX_ENABLED | ofbi->region->id;
44 }
46 static struct omapfb2_mem_region *get_mem_region(struct omapfb_info *ofbi,
47                                                  u8 mem_idx)
48 {
49         struct omapfb2_device *fbdev = ofbi->fbdev;
51         if (mem_idx & OMAPFB_MEM_IDX_ENABLED)
52                 mem_idx &= OMAPFB_MEM_IDX_MASK;
53         else
54                 mem_idx = ofbi->id;
56         if (mem_idx >= fbdev->num_fbs)
57                 return NULL;
59         return &fbdev->regions[mem_idx];
60 }
62 static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
63 {
64         struct omapfb_info *ofbi = FB2OFB(fbi);
65         struct omapfb2_device *fbdev = ofbi->fbdev;
66         struct omap_overlay *ovl;
67         struct omap_overlay_info old_info;
68         struct omapfb2_mem_region *old_rg, *new_rg;
69         int r = 0;
71         DBG("omapfb_setup_plane\n");
73         if (ofbi->num_overlays == 0) {
74                 r = -EINVAL;
75                 goto out;
76         }
78         /* XXX uses only the first overlay */
79         ovl = ofbi->overlays[0];
81         old_rg = ofbi->region;
82         new_rg = get_mem_region(ofbi, pi->mem_idx);
83         if (!new_rg) {
84                 r = -EINVAL;
85                 goto out;
86         }
88         /* Take the locks in a specific order to keep lockdep happy */
89         if (old_rg->id < new_rg->id) {
90                 omapfb_get_mem_region(old_rg);
91                 omapfb_get_mem_region(new_rg);
92         } else if (new_rg->id < old_rg->id) {
93                 omapfb_get_mem_region(new_rg);
94                 omapfb_get_mem_region(old_rg);
95         } else
96                 omapfb_get_mem_region(old_rg);
98         if (pi->enabled && !new_rg->size) {
99                 /*
100                  * This plane's memory was freed, can't enable it
101                  * until it's reallocated.
102                  */
103                 r = -EINVAL;
104                 goto put_mem;
105         }
107         ovl->get_overlay_info(ovl, &old_info);
109         if (old_rg != new_rg) {
110                 ofbi->region = new_rg;
111                 set_fb_fix(fbi);
112         }
114         if (!pi->enabled) {
115                 r = ovl->disable(ovl);
116                 if (r)
117                         goto undo;
118         }
120         if (pi->enabled) {
121                 r = omapfb_setup_overlay(fbi, ovl, pi->pos_x, pi->pos_y,
122                         pi->out_width, pi->out_height);
123                 if (r)
124                         goto undo;
125         } else {
126                 struct omap_overlay_info info;
128                 ovl->get_overlay_info(ovl, &info);
130                 info.pos_x = pi->pos_x;
131                 info.pos_y = pi->pos_y;
132                 info.out_width = pi->out_width;
133                 info.out_height = pi->out_height;
135                 r = ovl->set_overlay_info(ovl, &info);
136                 if (r)
137                         goto undo;
138         }
140         if (ovl->manager)
141                 ovl->manager->apply(ovl->manager);
143         if (pi->enabled) {
144                 r = ovl->enable(ovl);
145                 if (r)
146                         goto undo;
147         }
149         /* Release the locks in a specific order to keep lockdep happy */
150         if (old_rg->id > new_rg->id) {
151                 omapfb_put_mem_region(old_rg);
152                 omapfb_put_mem_region(new_rg);
153         } else if (new_rg->id > old_rg->id) {
154                 omapfb_put_mem_region(new_rg);
155                 omapfb_put_mem_region(old_rg);
156         } else
157                 omapfb_put_mem_region(old_rg);
159         return 0;
161  undo:
162         if (old_rg != new_rg) {
163                 ofbi->region = old_rg;
164                 set_fb_fix(fbi);
165         }
167         ovl->set_overlay_info(ovl, &old_info);
168  put_mem:
169         /* Release the locks in a specific order to keep lockdep happy */
170         if (old_rg->id > new_rg->id) {
171                 omapfb_put_mem_region(old_rg);
172                 omapfb_put_mem_region(new_rg);
173         } else if (new_rg->id > old_rg->id) {
174                 omapfb_put_mem_region(new_rg);
175                 omapfb_put_mem_region(old_rg);
176         } else
177                 omapfb_put_mem_region(old_rg);
178  out:
179         dev_err(fbdev->dev, "setup_plane failed\n");
181         return r;
184 static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
186         struct omapfb_info *ofbi = FB2OFB(fbi);
188         if (ofbi->num_overlays == 0) {
189                 memset(pi, 0, sizeof(*pi));
190         } else {
191                 struct omap_overlay *ovl;
192                 struct omap_overlay_info ovli;
194                 ovl = ofbi->overlays[0];
195                 ovl->get_overlay_info(ovl, &ovli);
197                 pi->pos_x = ovli.pos_x;
198                 pi->pos_y = ovli.pos_y;
199                 pi->enabled = ovl->is_enabled(ovl);
200                 pi->channel_out = 0; /* xxx */
201                 pi->mirror = 0;
202                 pi->mem_idx = get_mem_idx(ofbi);
203                 pi->out_width = ovli.out_width;
204                 pi->out_height = ovli.out_height;
205         }
207         return 0;
210 static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
212         struct omapfb_info *ofbi = FB2OFB(fbi);
213         struct omapfb2_device *fbdev = ofbi->fbdev;
214         struct omap_dss_device *display = fb2display(fbi);
215         struct omapfb2_mem_region *rg;
216         int r = 0, i;
217         size_t size;
219         if (mi->type != OMAPFB_MEMTYPE_SDRAM)
220                 return -EINVAL;
222         size = PAGE_ALIGN(mi->size);
224         if (display && display->driver->sync)
225                 display->driver->sync(display);
227         rg = ofbi->region;
229         down_write_nested(&rg->lock, rg->id);
230         atomic_inc(&rg->lock_count);
232         if (rg->size == size && rg->type == mi->type)
233                 goto out;
235         if (atomic_read(&rg->map_count)) {
236                 r = -EBUSY;
237                 goto out;
238         }
240         for (i = 0; i < fbdev->num_fbs; i++) {
241                 struct omapfb_info *ofbi2 = FB2OFB(fbdev->fbs[i]);
242                 int j;
244                 if (ofbi2->region != rg)
245                         continue;
247                 for (j = 0; j < ofbi2->num_overlays; j++) {
248                         struct omap_overlay *ovl;
249                         ovl = ofbi2->overlays[j];
250                         if (ovl->is_enabled(ovl)) {
251                                 r = -EBUSY;
252                                 goto out;
253                         }
254                 }
255         }
257         r = omapfb_realloc_fbmem(fbi, size, mi->type);
258         if (r) {
259                 dev_err(fbdev->dev, "realloc fbmem failed\n");
260                 goto out;
261         }
263  out:
264         atomic_dec(&rg->lock_count);
265         up_write(&rg->lock);
267         return r;
270 static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
272         struct omapfb_info *ofbi = FB2OFB(fbi);
273         struct omapfb2_mem_region *rg;
275         rg = omapfb_get_mem_region(ofbi->region);
276         memset(mi, 0, sizeof(*mi));
278         mi->size = rg->size;
279         mi->type = rg->type;
281         omapfb_put_mem_region(rg);
283         return 0;
286 static int omapfb_update_window(struct fb_info *fbi,
287                 u32 x, u32 y, u32 w, u32 h)
289         struct omap_dss_device *display = fb2display(fbi);
290         u16 dw, dh;
292         if (!display)
293                 return 0;
295         if (w == 0 || h == 0)
296                 return 0;
298         display->driver->get_resolution(display, &dw, &dh);
300         if (x + w > dw || y + h > dh)
301                 return -EINVAL;
303         return display->driver->update(display, x, y, w, h);
306 int omapfb_set_update_mode(struct fb_info *fbi,
307                                    enum omapfb_update_mode mode)
309         struct omap_dss_device *display = fb2display(fbi);
310         struct omapfb_info *ofbi = FB2OFB(fbi);
311         struct omapfb2_device *fbdev = ofbi->fbdev;
312         struct omapfb_display_data *d;
313         int r;
315         if (!display)
316                 return -EINVAL;
318         if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
319                 return -EINVAL;
321         omapfb_lock(fbdev);
323         d = get_display_data(fbdev, display);
325         if (d->update_mode == mode) {
326                 omapfb_unlock(fbdev);
327                 return 0;
328         }
330         r = 0;
332         if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
333                 if (mode == OMAPFB_AUTO_UPDATE)
334                         omapfb_start_auto_update(fbdev, display);
335                 else /* MANUAL_UPDATE */
336                         omapfb_stop_auto_update(fbdev, display);
338                 d->update_mode = mode;
339         } else { /* AUTO_UPDATE */
340                 if (mode == OMAPFB_MANUAL_UPDATE)
341                         r = -EINVAL;
342         }
344         omapfb_unlock(fbdev);
346         return r;
349 int omapfb_get_update_mode(struct fb_info *fbi,
350                 enum omapfb_update_mode *mode)
352         struct omap_dss_device *display = fb2display(fbi);
353         struct omapfb_info *ofbi = FB2OFB(fbi);
354         struct omapfb2_device *fbdev = ofbi->fbdev;
355         struct omapfb_display_data *d;
357         if (!display)
358                 return -EINVAL;
360         omapfb_lock(fbdev);
362         d = get_display_data(fbdev, display);
364         *mode = d->update_mode;
366         omapfb_unlock(fbdev);
368         return 0;
371 /* XXX this color key handling is a hack... */
372 static struct omapfb_color_key omapfb_color_keys[2];
374 static int _omapfb_set_color_key(struct omap_overlay_manager *mgr,
375                 struct omapfb_color_key *ck)
377         struct omap_overlay_manager_info info;
378         enum omap_dss_trans_key_type kt;
379         int r;
381         mgr->get_manager_info(mgr, &info);
383         if (ck->key_type == OMAPFB_COLOR_KEY_DISABLED) {
384                 info.trans_enabled = false;
385                 omapfb_color_keys[mgr->id] = *ck;
387                 r = mgr->set_manager_info(mgr, &info);
388                 if (r)
389                         return r;
391                 r = mgr->apply(mgr);
393                 return r;
394         }
396         switch (ck->key_type) {
397         case OMAPFB_COLOR_KEY_GFX_DST:
398                 kt = OMAP_DSS_COLOR_KEY_GFX_DST;
399                 break;
400         case OMAPFB_COLOR_KEY_VID_SRC:
401                 kt = OMAP_DSS_COLOR_KEY_VID_SRC;
402                 break;
403         default:
404                 return -EINVAL;
405         }
407         info.default_color = ck->background;
408         info.trans_key = ck->trans_key;
409         info.trans_key_type = kt;
410         info.trans_enabled = true;
412         omapfb_color_keys[mgr->id] = *ck;
414         r = mgr->set_manager_info(mgr, &info);
415         if (r)
416                 return r;
418         r = mgr->apply(mgr);
420         return r;
423 static int omapfb_set_color_key(struct fb_info *fbi,
424                 struct omapfb_color_key *ck)
426         struct omapfb_info *ofbi = FB2OFB(fbi);
427         struct omapfb2_device *fbdev = ofbi->fbdev;
428         int r;
429         int i;
430         struct omap_overlay_manager *mgr = NULL;
432         omapfb_lock(fbdev);
434         for (i = 0; i < ofbi->num_overlays; i++) {
435                 if (ofbi->overlays[i]->manager) {
436                         mgr = ofbi->overlays[i]->manager;
437                         break;
438                 }
439         }
441         if (!mgr) {
442                 r = -EINVAL;
443                 goto err;
444         }
446         r = _omapfb_set_color_key(mgr, ck);
447 err:
448         omapfb_unlock(fbdev);
450         return r;
453 static int omapfb_get_color_key(struct fb_info *fbi,
454                 struct omapfb_color_key *ck)
456         struct omapfb_info *ofbi = FB2OFB(fbi);
457         struct omapfb2_device *fbdev = ofbi->fbdev;
458         struct omap_overlay_manager *mgr = NULL;
459         int r = 0;
460         int i;
462         omapfb_lock(fbdev);
464         for (i = 0; i < ofbi->num_overlays; i++) {
465                 if (ofbi->overlays[i]->manager) {
466                         mgr = ofbi->overlays[i]->manager;
467                         break;
468                 }
469         }
471         if (!mgr) {
472                 r = -EINVAL;
473                 goto err;
474         }
476         *ck = omapfb_color_keys[mgr->id];
477 err:
478         omapfb_unlock(fbdev);
480         return r;
483 static int omapfb_memory_read(struct fb_info *fbi,
484                 struct omapfb_memory_read *mr)
486         struct omap_dss_device *display = fb2display(fbi);
487         void *buf;
488         int r;
490         if (!display || !display->driver->memory_read)
491                 return -ENOENT;
493         if (!access_ok(VERIFY_WRITE, mr->buffer, mr->buffer_size))
494                 return -EFAULT;
496         if (mr->w * mr->h * 3 > mr->buffer_size)
497                 return -EINVAL;
499         buf = vmalloc(mr->buffer_size);
500         if (!buf) {
501                 DBG("vmalloc failed\n");
502                 return -ENOMEM;
503         }
505         r = display->driver->memory_read(display, buf, mr->buffer_size,
506                         mr->x, mr->y, mr->w, mr->h);
508         if (r > 0) {
509                 if (copy_to_user(mr->buffer, buf, mr->buffer_size))
510                         r = -EFAULT;
511         }
513         vfree(buf);
515         return r;
518 static int omapfb_get_ovl_colormode(struct omapfb2_device *fbdev,
519                              struct omapfb_ovl_colormode *mode)
521         int ovl_idx = mode->overlay_idx;
522         int mode_idx = mode->mode_idx;
523         struct omap_overlay *ovl;
524         enum omap_color_mode supported_modes;
525         struct fb_var_screeninfo var;
526         int i;
528         if (ovl_idx >= fbdev->num_overlays)
529                 return -ENODEV;
530         ovl = fbdev->overlays[ovl_idx];
531         supported_modes = ovl->supported_modes;
533         mode_idx = mode->mode_idx;
535         for (i = 0; i < sizeof(supported_modes) * 8; i++) {
536                 if (!(supported_modes & (1 << i)))
537                         continue;
538                 /*
539                  * It's possible that the FB doesn't support a mode
540                  * that is supported by the overlay, so call the
541                  * following here.
542                  */
543                 if (dss_mode_to_fb_mode(1 << i, &var) < 0)
544                         continue;
546                 mode_idx--;
547                 if (mode_idx < 0)
548                         break;
549         }
551         if (i == sizeof(supported_modes) * 8)
552                 return -ENOENT;
554         mode->bits_per_pixel = var.bits_per_pixel;
555         mode->nonstd = var.nonstd;
556         mode->red = var.red;
557         mode->green = var.green;
558         mode->blue = var.blue;
559         mode->transp = var.transp;
561         return 0;
564 static int omapfb_wait_for_go(struct fb_info *fbi)
566         struct omapfb_info *ofbi = FB2OFB(fbi);
567         int r = 0;
568         int i;
570         for (i = 0; i < ofbi->num_overlays; ++i) {
571                 struct omap_overlay *ovl = ofbi->overlays[i];
572                 r = ovl->wait_for_go(ovl);
573                 if (r)
574                         break;
575         }
577         return r;
580 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
582         struct omapfb_info *ofbi = FB2OFB(fbi);
583         struct omapfb2_device *fbdev = ofbi->fbdev;
584         struct omap_dss_device *display = fb2display(fbi);
585         struct omap_overlay_manager *mgr;
587         union {
588                 struct omapfb_update_window_old uwnd_o;
589                 struct omapfb_update_window     uwnd;
590                 struct omapfb_plane_info        plane_info;
591                 struct omapfb_caps              caps;
592                 struct omapfb_mem_info          mem_info;
593                 struct omapfb_color_key         color_key;
594                 struct omapfb_ovl_colormode     ovl_colormode;
595                 enum omapfb_update_mode         update_mode;
596                 int test_num;
597                 struct omapfb_memory_read       memory_read;
598                 struct omapfb_vram_info         vram_info;
599                 struct omapfb_tearsync_info     tearsync_info;
600                 struct omapfb_display_info      display_info;
601                 u32                             crt;
602         } p;
604         int r = 0;
606         switch (cmd) {
607         case OMAPFB_SYNC_GFX:
608                 DBG("ioctl SYNC_GFX\n");
609                 if (!display || !display->driver->sync) {
610                         /* DSS1 never returns an error here, so we neither */
611                         /*r = -EINVAL;*/
612                         break;
613                 }
615                 r = display->driver->sync(display);
616                 break;
618         case OMAPFB_UPDATE_WINDOW_OLD:
619                 DBG("ioctl UPDATE_WINDOW_OLD\n");
620                 if (!display || !display->driver->update) {
621                         r = -EINVAL;
622                         break;
623                 }
625                 if (copy_from_user(&p.uwnd_o,
626                                         (void __user *)arg,
627                                         sizeof(p.uwnd_o))) {
628                         r = -EFAULT;
629                         break;
630                 }
632                 r = omapfb_update_window(fbi, p.uwnd_o.x, p.uwnd_o.y,
633                                 p.uwnd_o.width, p.uwnd_o.height);
634                 break;
636         case OMAPFB_UPDATE_WINDOW:
637                 DBG("ioctl UPDATE_WINDOW\n");
638                 if (!display || !display->driver->update) {
639                         r = -EINVAL;
640                         break;
641                 }
643                 if (copy_from_user(&p.uwnd, (void __user *)arg,
644                                         sizeof(p.uwnd))) {
645                         r = -EFAULT;
646                         break;
647                 }
649                 r = omapfb_update_window(fbi, p.uwnd.x, p.uwnd.y,
650                                 p.uwnd.width, p.uwnd.height);
651                 break;
653         case OMAPFB_SETUP_PLANE:
654                 DBG("ioctl SETUP_PLANE\n");
655                 if (copy_from_user(&p.plane_info, (void __user *)arg,
656                                         sizeof(p.plane_info)))
657                         r = -EFAULT;
658                 else
659                         r = omapfb_setup_plane(fbi, &p.plane_info);
660                 break;
662         case OMAPFB_QUERY_PLANE:
663                 DBG("ioctl QUERY_PLANE\n");
664                 r = omapfb_query_plane(fbi, &p.plane_info);
665                 if (r < 0)
666                         break;
667                 if (copy_to_user((void __user *)arg, &p.plane_info,
668                                         sizeof(p.plane_info)))
669                         r = -EFAULT;
670                 break;
672         case OMAPFB_SETUP_MEM:
673                 DBG("ioctl SETUP_MEM\n");
674                 if (copy_from_user(&p.mem_info, (void __user *)arg,
675                                         sizeof(p.mem_info)))
676                         r = -EFAULT;
677                 else
678                         r = omapfb_setup_mem(fbi, &p.mem_info);
679                 break;
681         case OMAPFB_QUERY_MEM:
682                 DBG("ioctl QUERY_MEM\n");
683                 r = omapfb_query_mem(fbi, &p.mem_info);
684                 if (r < 0)
685                         break;
686                 if (copy_to_user((void __user *)arg, &p.mem_info,
687                                         sizeof(p.mem_info)))
688                         r = -EFAULT;
689                 break;
691         case OMAPFB_GET_CAPS:
692                 DBG("ioctl GET_CAPS\n");
693                 if (!display) {
694                         r = -EINVAL;
695                         break;
696                 }
698                 memset(&p.caps, 0, sizeof(p.caps));
699                 if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
700                         p.caps.ctrl |= OMAPFB_CAPS_MANUAL_UPDATE;
701                 if (display->caps & OMAP_DSS_DISPLAY_CAP_TEAR_ELIM)
702                         p.caps.ctrl |= OMAPFB_CAPS_TEARSYNC;
704                 if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
705                         r = -EFAULT;
706                 break;
708         case OMAPFB_GET_OVERLAY_COLORMODE:
709                 DBG("ioctl GET_OVERLAY_COLORMODE\n");
710                 if (copy_from_user(&p.ovl_colormode, (void __user *)arg,
711                                    sizeof(p.ovl_colormode))) {
712                         r = -EFAULT;
713                         break;
714                 }
715                 r = omapfb_get_ovl_colormode(fbdev, &p.ovl_colormode);
716                 if (r < 0)
717                         break;
718                 if (copy_to_user((void __user *)arg, &p.ovl_colormode,
719                                  sizeof(p.ovl_colormode)))
720                         r = -EFAULT;
721                 break;
723         case OMAPFB_SET_UPDATE_MODE:
724                 DBG("ioctl SET_UPDATE_MODE\n");
725                 if (get_user(p.update_mode, (int __user *)arg))
726                         r = -EFAULT;
727                 else
728                         r = omapfb_set_update_mode(fbi, p.update_mode);
729                 break;
731         case OMAPFB_GET_UPDATE_MODE:
732                 DBG("ioctl GET_UPDATE_MODE\n");
733                 r = omapfb_get_update_mode(fbi, &p.update_mode);
734                 if (r)
735                         break;
736                 if (put_user(p.update_mode,
737                                         (enum omapfb_update_mode __user *)arg))
738                         r = -EFAULT;
739                 break;
741         case OMAPFB_SET_COLOR_KEY:
742                 DBG("ioctl SET_COLOR_KEY\n");
743                 if (copy_from_user(&p.color_key, (void __user *)arg,
744                                    sizeof(p.color_key)))
745                         r = -EFAULT;
746                 else
747                         r = omapfb_set_color_key(fbi, &p.color_key);
748                 break;
750         case OMAPFB_GET_COLOR_KEY:
751                 DBG("ioctl GET_COLOR_KEY\n");
752                 r = omapfb_get_color_key(fbi, &p.color_key);
753                 if (r)
754                         break;
755                 if (copy_to_user((void __user *)arg, &p.color_key,
756                                  sizeof(p.color_key)))
757                         r = -EFAULT;
758                 break;
760         case FBIO_WAITFORVSYNC:
761                 if (get_user(p.crt, (__u32 __user *)arg)) {
762                         r = -EFAULT;
763                         break;
764                 }
765                 if (p.crt != 0) {
766                         r = -ENODEV;
767                         break;
768                 }
769                 /* FALLTHROUGH */
771         case OMAPFB_WAITFORVSYNC:
772                 DBG("ioctl WAITFORVSYNC\n");
774                 if (!display) {
775                         r = -EINVAL;
776                         break;
777                 }
779                 mgr = omapdss_find_mgr_from_display(display);
780                 if (!mgr) {
781                         r = -EINVAL;
782                         break;
783                 }
785                 r = mgr->wait_for_vsync(mgr);
786                 break;
788         case OMAPFB_WAITFORGO:
789                 DBG("ioctl WAITFORGO\n");
790                 if (!display) {
791                         r = -EINVAL;
792                         break;
793                 }
795                 r = omapfb_wait_for_go(fbi);
796                 break;
798         /* LCD and CTRL tests do the same thing for backward
799          * compatibility */
800         case OMAPFB_LCD_TEST:
801                 DBG("ioctl LCD_TEST\n");
802                 if (get_user(p.test_num, (int __user *)arg)) {
803                         r = -EFAULT;
804                         break;
805                 }
806                 if (!display || !display->driver->run_test) {
807                         r = -EINVAL;
808                         break;
809                 }
811                 r = display->driver->run_test(display, p.test_num);
813                 break;
815         case OMAPFB_CTRL_TEST:
816                 DBG("ioctl CTRL_TEST\n");
817                 if (get_user(p.test_num, (int __user *)arg)) {
818                         r = -EFAULT;
819                         break;
820                 }
821                 if (!display || !display->driver->run_test) {
822                         r = -EINVAL;
823                         break;
824                 }
826                 r = display->driver->run_test(display, p.test_num);
828                 break;
830         case OMAPFB_MEMORY_READ:
831                 DBG("ioctl MEMORY_READ\n");
833                 if (copy_from_user(&p.memory_read, (void __user *)arg,
834                                         sizeof(p.memory_read))) {
835                         r = -EFAULT;
836                         break;
837                 }
839                 r = omapfb_memory_read(fbi, &p.memory_read);
841                 break;
843         case OMAPFB_GET_VRAM_INFO: {
844                 DBG("ioctl GET_VRAM_INFO\n");
846                 /*
847                  * We don't have the ability to get this vram info anymore.
848                  * Fill in something that should keep the applications working.
849                  */
850                 p.vram_info.total = SZ_1M * 64;
851                 p.vram_info.free = SZ_1M * 64;
852                 p.vram_info.largest_free_block = SZ_1M * 64;
854                 if (copy_to_user((void __user *)arg, &p.vram_info,
855                                         sizeof(p.vram_info)))
856                         r = -EFAULT;
857                 break;
858         }
860         case OMAPFB_SET_TEARSYNC: {
861                 DBG("ioctl SET_TEARSYNC\n");
863                 if (copy_from_user(&p.tearsync_info, (void __user *)arg,
864                                         sizeof(p.tearsync_info))) {
865                         r = -EFAULT;
866                         break;
867                 }
869                 if (!display || !display->driver->enable_te) {
870                         r = -ENODEV;
871                         break;
872                 }
874                 r = display->driver->enable_te(display,
875                                 !!p.tearsync_info.enabled);
877                 break;
878         }
880         case OMAPFB_GET_DISPLAY_INFO: {
881                 u16 xres, yres;
883                 DBG("ioctl GET_DISPLAY_INFO\n");
885                 if (display == NULL) {
886                         r = -ENODEV;
887                         break;
888                 }
890                 display->driver->get_resolution(display, &xres, &yres);
892                 p.display_info.xres = xres;
893                 p.display_info.yres = yres;
895                 if (display->driver->get_dimensions) {
896                         u32 w, h;
897                         display->driver->get_dimensions(display, &w, &h);
898                         p.display_info.width = w;
899                         p.display_info.height = h;
900                 } else {
901                         p.display_info.width = 0;
902                         p.display_info.height = 0;
903                 }
905                 if (copy_to_user((void __user *)arg, &p.display_info,
906                                         sizeof(p.display_info)))
907                         r = -EFAULT;
908                 break;
909         }
911         default:
912                 dev_err(fbdev->dev, "Unknown ioctl 0x%x\n", cmd);
913                 r = -EINVAL;
914         }
916         if (r < 0)
917                 DBG("ioctl failed: %d\n", r);
919         return r;