Version:  2.0.40 2.2.26 2.4.37 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8

Linux/drivers/gpu/drm/omapdrm/omap_drv.c

  1 /*
  2  * drivers/gpu/drm/omapdrm/omap_drv.c
  3  *
  4  * Copyright (C) 2011 Texas Instruments
  5  * Author: Rob Clark <rob@ti.com>
  6  *
  7  * This program is free software; you can redistribute it and/or modify it
  8  * under the terms of the GNU General Public License version 2 as published by
  9  * the Free Software Foundation.
 10  *
 11  * This program is distributed in the hope that it will be useful, but WITHOUT
 12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 14  * more details.
 15  *
 16  * You should have received a copy of the GNU General Public License along with
 17  * this program.  If not, see <http://www.gnu.org/licenses/>.
 18  */
 19 
 20 #include <linux/wait.h>
 21 
 22 #include <drm/drm_atomic.h>
 23 #include <drm/drm_atomic_helper.h>
 24 #include <drm/drm_crtc_helper.h>
 25 #include <drm/drm_fb_helper.h>
 26 
 27 #include "omap_dmm_tiler.h"
 28 #include "omap_drv.h"
 29 
 30 #define DRIVER_NAME             MODULE_NAME
 31 #define DRIVER_DESC             "OMAP DRM"
 32 #define DRIVER_DATE             "20110917"
 33 #define DRIVER_MAJOR            1
 34 #define DRIVER_MINOR            0
 35 #define DRIVER_PATCHLEVEL       0
 36 
 37 static int num_crtc = CONFIG_DRM_OMAP_NUM_CRTCS;
 38 
 39 MODULE_PARM_DESC(num_crtc, "Number of overlays to use as CRTCs");
 40 module_param(num_crtc, int, 0600);
 41 
 42 /*
 43  * mode config funcs
 44  */
 45 
 46 /* Notes about mapping DSS and DRM entities:
 47  *    CRTC:        overlay
 48  *    encoder:     manager.. with some extension to allow one primary CRTC
 49  *                 and zero or more video CRTC's to be mapped to one encoder?
 50  *    connector:   dssdev.. manager can be attached/detached from different
 51  *                 devices
 52  */
 53 
 54 static void omap_fb_output_poll_changed(struct drm_device *dev)
 55 {
 56         struct omap_drm_private *priv = dev->dev_private;
 57         DBG("dev=%p", dev);
 58         if (priv->fbdev)
 59                 drm_fb_helper_hotplug_event(priv->fbdev);
 60 }
 61 
 62 struct omap_atomic_state_commit {
 63         struct work_struct work;
 64         struct drm_device *dev;
 65         struct drm_atomic_state *state;
 66         u32 crtcs;
 67 };
 68 
 69 static void omap_atomic_wait_for_completion(struct drm_device *dev,
 70                                             struct drm_atomic_state *old_state)
 71 {
 72         struct drm_crtc_state *old_crtc_state;
 73         struct drm_crtc *crtc;
 74         unsigned int i;
 75         int ret;
 76 
 77         for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) {
 78                 if (!crtc->state->enable)
 79                         continue;
 80 
 81                 ret = omap_crtc_wait_pending(crtc);
 82 
 83                 if (!ret)
 84                         dev_warn(dev->dev,
 85                                  "atomic complete timeout (pipe %u)!\n", i);
 86         }
 87 }
 88 
 89 static void omap_atomic_complete(struct omap_atomic_state_commit *commit)
 90 {
 91         struct drm_device *dev = commit->dev;
 92         struct omap_drm_private *priv = dev->dev_private;
 93         struct drm_atomic_state *old_state = commit->state;
 94 
 95         /* Apply the atomic update. */
 96         dispc_runtime_get();
 97 
 98         drm_atomic_helper_commit_modeset_disables(dev, old_state);
 99         drm_atomic_helper_commit_planes(dev, old_state, false);
100         drm_atomic_helper_commit_modeset_enables(dev, old_state);
101 
102         omap_atomic_wait_for_completion(dev, old_state);
103 
104         drm_atomic_helper_cleanup_planes(dev, old_state);
105 
106         dispc_runtime_put();
107 
108         drm_atomic_state_free(old_state);
109 
110         /* Complete the commit, wake up any waiter. */
111         spin_lock(&priv->commit.lock);
112         priv->commit.pending &= ~commit->crtcs;
113         spin_unlock(&priv->commit.lock);
114 
115         wake_up_all(&priv->commit.wait);
116 
117         kfree(commit);
118 }
119 
120 static void omap_atomic_work(struct work_struct *work)
121 {
122         struct omap_atomic_state_commit *commit =
123                 container_of(work, struct omap_atomic_state_commit, work);
124 
125         omap_atomic_complete(commit);
126 }
127 
128 static bool omap_atomic_is_pending(struct omap_drm_private *priv,
129                                    struct omap_atomic_state_commit *commit)
130 {
131         bool pending;
132 
133         spin_lock(&priv->commit.lock);
134         pending = priv->commit.pending & commit->crtcs;
135         spin_unlock(&priv->commit.lock);
136 
137         return pending;
138 }
139 
140 static int omap_atomic_commit(struct drm_device *dev,
141                               struct drm_atomic_state *state, bool nonblock)
142 {
143         struct omap_drm_private *priv = dev->dev_private;
144         struct omap_atomic_state_commit *commit;
145         struct drm_crtc *crtc;
146         struct drm_crtc_state *crtc_state;
147         int i, ret;
148 
149         ret = drm_atomic_helper_prepare_planes(dev, state);
150         if (ret)
151                 return ret;
152 
153         /* Allocate the commit object. */
154         commit = kzalloc(sizeof(*commit), GFP_KERNEL);
155         if (commit == NULL) {
156                 ret = -ENOMEM;
157                 goto error;
158         }
159 
160         INIT_WORK(&commit->work, omap_atomic_work);
161         commit->dev = dev;
162         commit->state = state;
163 
164         /* Wait until all affected CRTCs have completed previous commits and
165          * mark them as pending.
166          */
167         for_each_crtc_in_state(state, crtc, crtc_state, i)
168                 commit->crtcs |= drm_crtc_mask(crtc);
169 
170         wait_event(priv->commit.wait, !omap_atomic_is_pending(priv, commit));
171 
172         spin_lock(&priv->commit.lock);
173         priv->commit.pending |= commit->crtcs;
174         spin_unlock(&priv->commit.lock);
175 
176         /* Swap the state, this is the point of no return. */
177         drm_atomic_helper_swap_state(state, true);
178 
179         if (nonblock)
180                 schedule_work(&commit->work);
181         else
182                 omap_atomic_complete(commit);
183 
184         return 0;
185 
186 error:
187         drm_atomic_helper_cleanup_planes(dev, state);
188         return ret;
189 }
190 
191 static const struct drm_mode_config_funcs omap_mode_config_funcs = {
192         .fb_create = omap_framebuffer_create,
193         .output_poll_changed = omap_fb_output_poll_changed,
194         .atomic_check = drm_atomic_helper_check,
195         .atomic_commit = omap_atomic_commit,
196 };
197 
198 static int get_connector_type(struct omap_dss_device *dssdev)
199 {
200         switch (dssdev->type) {
201         case OMAP_DISPLAY_TYPE_HDMI:
202                 return DRM_MODE_CONNECTOR_HDMIA;
203         case OMAP_DISPLAY_TYPE_DVI:
204                 return DRM_MODE_CONNECTOR_DVID;
205         case OMAP_DISPLAY_TYPE_DSI:
206                 return DRM_MODE_CONNECTOR_DSI;
207         default:
208                 return DRM_MODE_CONNECTOR_Unknown;
209         }
210 }
211 
212 static bool channel_used(struct drm_device *dev, enum omap_channel channel)
213 {
214         struct omap_drm_private *priv = dev->dev_private;
215         int i;
216 
217         for (i = 0; i < priv->num_crtcs; i++) {
218                 struct drm_crtc *crtc = priv->crtcs[i];
219 
220                 if (omap_crtc_channel(crtc) == channel)
221                         return true;
222         }
223 
224         return false;
225 }
226 static void omap_disconnect_dssdevs(void)
227 {
228         struct omap_dss_device *dssdev = NULL;
229 
230         for_each_dss_dev(dssdev)
231                 dssdev->driver->disconnect(dssdev);
232 }
233 
234 static int omap_connect_dssdevs(void)
235 {
236         int r;
237         struct omap_dss_device *dssdev = NULL;
238         bool no_displays = true;
239 
240         for_each_dss_dev(dssdev) {
241                 r = dssdev->driver->connect(dssdev);
242                 if (r == -EPROBE_DEFER) {
243                         omap_dss_put_device(dssdev);
244                         goto cleanup;
245                 } else if (r) {
246                         dev_warn(dssdev->dev, "could not connect display: %s\n",
247                                 dssdev->name);
248                 } else {
249                         no_displays = false;
250                 }
251         }
252 
253         if (no_displays)
254                 return -EPROBE_DEFER;
255 
256         return 0;
257 
258 cleanup:
259         /*
260          * if we are deferring probe, we disconnect the devices we previously
261          * connected
262          */
263         omap_disconnect_dssdevs();
264 
265         return r;
266 }
267 
268 static int omap_modeset_create_crtc(struct drm_device *dev, int id,
269                                     enum omap_channel channel)
270 {
271         struct omap_drm_private *priv = dev->dev_private;
272         struct drm_plane *plane;
273         struct drm_crtc *crtc;
274 
275         plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_PRIMARY);
276         if (IS_ERR(plane))
277                 return PTR_ERR(plane);
278 
279         crtc = omap_crtc_init(dev, plane, channel, id);
280 
281         BUG_ON(priv->num_crtcs >= ARRAY_SIZE(priv->crtcs));
282         priv->crtcs[id] = crtc;
283         priv->num_crtcs++;
284 
285         priv->planes[id] = plane;
286         priv->num_planes++;
287 
288         return 0;
289 }
290 
291 static int omap_modeset_init_properties(struct drm_device *dev)
292 {
293         struct omap_drm_private *priv = dev->dev_private;
294 
295         if (priv->has_dmm) {
296                 dev->mode_config.rotation_property =
297                         drm_mode_create_rotation_property(dev,
298                                 BIT(DRM_ROTATE_0) | BIT(DRM_ROTATE_90) |
299                                 BIT(DRM_ROTATE_180) | BIT(DRM_ROTATE_270) |
300                                 BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y));
301                 if (!dev->mode_config.rotation_property)
302                         return -ENOMEM;
303         }
304 
305         priv->zorder_prop = drm_property_create_range(dev, 0, "zorder", 0, 3);
306         if (!priv->zorder_prop)
307                 return -ENOMEM;
308 
309         return 0;
310 }
311 
312 static int omap_modeset_init(struct drm_device *dev)
313 {
314         struct omap_drm_private *priv = dev->dev_private;
315         struct omap_dss_device *dssdev = NULL;
316         int num_ovls = dss_feat_get_num_ovls();
317         int num_mgrs = dss_feat_get_num_mgrs();
318         int num_crtcs;
319         int i, id = 0;
320         int ret;
321 
322         drm_mode_config_init(dev);
323 
324         omap_drm_irq_install(dev);
325 
326         ret = omap_modeset_init_properties(dev);
327         if (ret < 0)
328                 return ret;
329 
330         /*
331          * We usually don't want to create a CRTC for each manager, at least
332          * not until we have a way to expose private planes to userspace.
333          * Otherwise there would not be enough video pipes left for drm planes.
334          * We use the num_crtc argument to limit the number of crtcs we create.
335          */
336         num_crtcs = min3(num_crtc, num_mgrs, num_ovls);
337 
338         dssdev = NULL;
339 
340         for_each_dss_dev(dssdev) {
341                 struct drm_connector *connector;
342                 struct drm_encoder *encoder;
343                 enum omap_channel channel;
344                 struct omap_dss_device *out;
345 
346                 if (!omapdss_device_is_connected(dssdev))
347                         continue;
348 
349                 encoder = omap_encoder_init(dev, dssdev);
350 
351                 if (!encoder) {
352                         dev_err(dev->dev, "could not create encoder: %s\n",
353                                         dssdev->name);
354                         return -ENOMEM;
355                 }
356 
357                 connector = omap_connector_init(dev,
358                                 get_connector_type(dssdev), dssdev, encoder);
359 
360                 if (!connector) {
361                         dev_err(dev->dev, "could not create connector: %s\n",
362                                         dssdev->name);
363                         return -ENOMEM;
364                 }
365 
366                 BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders));
367                 BUG_ON(priv->num_connectors >= ARRAY_SIZE(priv->connectors));
368 
369                 priv->encoders[priv->num_encoders++] = encoder;
370                 priv->connectors[priv->num_connectors++] = connector;
371 
372                 drm_mode_connector_attach_encoder(connector, encoder);
373 
374                 /*
375                  * if we have reached the limit of the crtcs we are allowed to
376                  * create, let's not try to look for a crtc for this
377                  * panel/encoder and onwards, we will, of course, populate the
378                  * the possible_crtcs field for all the encoders with the final
379                  * set of crtcs we create
380                  */
381                 if (id == num_crtcs)
382                         continue;
383 
384                 /*
385                  * get the recommended DISPC channel for this encoder. For now,
386                  * we only try to get create a crtc out of the recommended, the
387                  * other possible channels to which the encoder can connect are
388                  * not considered.
389                  */
390 
391                 out = omapdss_find_output_from_display(dssdev);
392                 channel = out->dispc_channel;
393                 omap_dss_put_device(out);
394 
395                 /*
396                  * if this channel hasn't already been taken by a previously
397                  * allocated crtc, we create a new crtc for it
398                  */
399                 if (!channel_used(dev, channel)) {
400                         ret = omap_modeset_create_crtc(dev, id, channel);
401                         if (ret < 0) {
402                                 dev_err(dev->dev,
403                                         "could not create CRTC (channel %u)\n",
404                                         channel);
405                                 return ret;
406                         }
407 
408                         id++;
409                 }
410         }
411 
412         /*
413          * we have allocated crtcs according to the need of the panels/encoders,
414          * adding more crtcs here if needed
415          */
416         for (; id < num_crtcs; id++) {
417 
418                 /* find a free manager for this crtc */
419                 for (i = 0; i < num_mgrs; i++) {
420                         if (!channel_used(dev, i))
421                                 break;
422                 }
423 
424                 if (i == num_mgrs) {
425                         /* this shouldn't really happen */
426                         dev_err(dev->dev, "no managers left for crtc\n");
427                         return -ENOMEM;
428                 }
429 
430                 ret = omap_modeset_create_crtc(dev, id, i);
431                 if (ret < 0) {
432                         dev_err(dev->dev,
433                                 "could not create CRTC (channel %u)\n", i);
434                         return ret;
435                 }
436         }
437 
438         /*
439          * Create normal planes for the remaining overlays:
440          */
441         for (; id < num_ovls; id++) {
442                 struct drm_plane *plane;
443 
444                 plane = omap_plane_init(dev, id, DRM_PLANE_TYPE_OVERLAY);
445                 if (IS_ERR(plane))
446                         return PTR_ERR(plane);
447 
448                 BUG_ON(priv->num_planes >= ARRAY_SIZE(priv->planes));
449                 priv->planes[priv->num_planes++] = plane;
450         }
451 
452         for (i = 0; i < priv->num_encoders; i++) {
453                 struct drm_encoder *encoder = priv->encoders[i];
454                 struct omap_dss_device *dssdev =
455                                         omap_encoder_get_dssdev(encoder);
456                 struct omap_dss_device *output;
457 
458                 output = omapdss_find_output_from_display(dssdev);
459 
460                 /* figure out which crtc's we can connect the encoder to: */
461                 encoder->possible_crtcs = 0;
462                 for (id = 0; id < priv->num_crtcs; id++) {
463                         struct drm_crtc *crtc = priv->crtcs[id];
464                         enum omap_channel crtc_channel;
465 
466                         crtc_channel = omap_crtc_channel(crtc);
467 
468                         if (output->dispc_channel == crtc_channel) {
469                                 encoder->possible_crtcs |= (1 << id);
470                                 break;
471                         }
472                 }
473 
474                 omap_dss_put_device(output);
475         }
476 
477         DBG("registered %d planes, %d crtcs, %d encoders and %d connectors\n",
478                 priv->num_planes, priv->num_crtcs, priv->num_encoders,
479                 priv->num_connectors);
480 
481         dev->mode_config.min_width = 32;
482         dev->mode_config.min_height = 32;
483 
484         /* note: eventually will need some cpu_is_omapXYZ() type stuff here
485          * to fill in these limits properly on different OMAP generations..
486          */
487         dev->mode_config.max_width = 2048;
488         dev->mode_config.max_height = 2048;
489 
490         dev->mode_config.funcs = &omap_mode_config_funcs;
491 
492         drm_mode_config_reset(dev);
493 
494         return 0;
495 }
496 
497 static void omap_modeset_free(struct drm_device *dev)
498 {
499         drm_mode_config_cleanup(dev);
500 }
501 
502 /*
503  * drm ioctl funcs
504  */
505 
506 
507 static int ioctl_get_param(struct drm_device *dev, void *data,
508                 struct drm_file *file_priv)
509 {
510         struct omap_drm_private *priv = dev->dev_private;
511         struct drm_omap_param *args = data;
512 
513         DBG("%p: param=%llu", dev, args->param);
514 
515         switch (args->param) {
516         case OMAP_PARAM_CHIPSET_ID:
517                 args->value = priv->omaprev;
518                 break;
519         default:
520                 DBG("unknown parameter %lld", args->param);
521                 return -EINVAL;
522         }
523 
524         return 0;
525 }
526 
527 static int ioctl_set_param(struct drm_device *dev, void *data,
528                 struct drm_file *file_priv)
529 {
530         struct drm_omap_param *args = data;
531 
532         switch (args->param) {
533         default:
534                 DBG("unknown parameter %lld", args->param);
535                 return -EINVAL;
536         }
537 
538         return 0;
539 }
540 
541 #define OMAP_BO_USER_MASK       0x00ffffff      /* flags settable by userspace */
542 
543 static int ioctl_gem_new(struct drm_device *dev, void *data,
544                 struct drm_file *file_priv)
545 {
546         struct drm_omap_gem_new *args = data;
547         u32 flags = args->flags & OMAP_BO_USER_MASK;
548 
549         VERB("%p:%p: size=0x%08x, flags=%08x", dev, file_priv,
550              args->size.bytes, flags);
551 
552         return omap_gem_new_handle(dev, file_priv, args->size, flags,
553                                    &args->handle);
554 }
555 
556 static int ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
557                 struct drm_file *file_priv)
558 {
559         struct drm_omap_gem_cpu_prep *args = data;
560         struct drm_gem_object *obj;
561         int ret;
562 
563         VERB("%p:%p: handle=%d, op=%x", dev, file_priv, args->handle, args->op);
564 
565         obj = drm_gem_object_lookup(file_priv, args->handle);
566         if (!obj)
567                 return -ENOENT;
568 
569         ret = omap_gem_op_sync(obj, args->op);
570 
571         if (!ret)
572                 ret = omap_gem_op_start(obj, args->op);
573 
574         drm_gem_object_unreference_unlocked(obj);
575 
576         return ret;
577 }
578 
579 static int ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
580                 struct drm_file *file_priv)
581 {
582         struct drm_omap_gem_cpu_fini *args = data;
583         struct drm_gem_object *obj;
584         int ret;
585 
586         VERB("%p:%p: handle=%d", dev, file_priv, args->handle);
587 
588         obj = drm_gem_object_lookup(file_priv, args->handle);
589         if (!obj)
590                 return -ENOENT;
591 
592         /* XXX flushy, flushy */
593         ret = 0;
594 
595         if (!ret)
596                 ret = omap_gem_op_finish(obj, args->op);
597 
598         drm_gem_object_unreference_unlocked(obj);
599 
600         return ret;
601 }
602 
603 static int ioctl_gem_info(struct drm_device *dev, void *data,
604                 struct drm_file *file_priv)
605 {
606         struct drm_omap_gem_info *args = data;
607         struct drm_gem_object *obj;
608         int ret = 0;
609 
610         VERB("%p:%p: handle=%d", dev, file_priv, args->handle);
611 
612         obj = drm_gem_object_lookup(file_priv, args->handle);
613         if (!obj)
614                 return -ENOENT;
615 
616         args->size = omap_gem_mmap_size(obj);
617         args->offset = omap_gem_mmap_offset(obj);
618 
619         drm_gem_object_unreference_unlocked(obj);
620 
621         return ret;
622 }
623 
624 static const struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = {
625         DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param, DRM_AUTH),
626         DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
627         DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new, DRM_AUTH),
628         DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep, DRM_AUTH),
629         DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini, DRM_AUTH),
630         DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info, DRM_AUTH),
631 };
632 
633 /*
634  * drm driver funcs
635  */
636 
637 /**
638  * load - setup chip and create an initial config
639  * @dev: DRM device
640  * @flags: startup flags
641  *
642  * The driver load routine has to do several things:
643  *   - initialize the memory manager
644  *   - allocate initial config memory
645  *   - setup the DRM framebuffer with the allocated memory
646  */
647 static int dev_load(struct drm_device *dev, unsigned long flags)
648 {
649         struct omap_drm_platform_data *pdata = dev->dev->platform_data;
650         struct omap_drm_private *priv;
651         unsigned int i;
652         int ret;
653 
654         DBG("load: dev=%p", dev);
655 
656         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
657         if (!priv)
658                 return -ENOMEM;
659 
660         priv->omaprev = pdata->omaprev;
661 
662         dev->dev_private = priv;
663 
664         priv->wq = alloc_ordered_workqueue("omapdrm", 0);
665         init_waitqueue_head(&priv->commit.wait);
666         spin_lock_init(&priv->commit.lock);
667 
668         spin_lock_init(&priv->list_lock);
669         INIT_LIST_HEAD(&priv->obj_list);
670 
671         omap_gem_init(dev);
672 
673         ret = omap_modeset_init(dev);
674         if (ret) {
675                 dev_err(dev->dev, "omap_modeset_init failed: ret=%d\n", ret);
676                 dev->dev_private = NULL;
677                 kfree(priv);
678                 return ret;
679         }
680 
681         /* Initialize vblank handling, start with all CRTCs disabled. */
682         ret = drm_vblank_init(dev, priv->num_crtcs);
683         if (ret)
684                 dev_warn(dev->dev, "could not init vblank\n");
685 
686         for (i = 0; i < priv->num_crtcs; i++)
687                 drm_crtc_vblank_off(priv->crtcs[i]);
688 
689         priv->fbdev = omap_fbdev_init(dev);
690 
691         /* store off drm_device for use in pm ops */
692         dev_set_drvdata(dev->dev, dev);
693 
694         drm_kms_helper_poll_init(dev);
695 
696         return 0;
697 }
698 
699 static int dev_unload(struct drm_device *dev)
700 {
701         struct omap_drm_private *priv = dev->dev_private;
702 
703         DBG("unload: dev=%p", dev);
704 
705         drm_kms_helper_poll_fini(dev);
706 
707         if (priv->fbdev)
708                 omap_fbdev_free(dev);
709 
710         omap_modeset_free(dev);
711         omap_gem_deinit(dev);
712 
713         destroy_workqueue(priv->wq);
714 
715         drm_vblank_cleanup(dev);
716         omap_drm_irq_uninstall(dev);
717 
718         kfree(dev->dev_private);
719         dev->dev_private = NULL;
720 
721         dev_set_drvdata(dev->dev, NULL);
722 
723         return 0;
724 }
725 
726 static int dev_open(struct drm_device *dev, struct drm_file *file)
727 {
728         file->driver_priv = NULL;
729 
730         DBG("open: dev=%p, file=%p", dev, file);
731 
732         return 0;
733 }
734 
735 /**
736  * lastclose - clean up after all DRM clients have exited
737  * @dev: DRM device
738  *
739  * Take care of cleaning up after all DRM clients have exited.  In the
740  * mode setting case, we want to restore the kernel's initial mode (just
741  * in case the last client left us in a bad state).
742  */
743 static void dev_lastclose(struct drm_device *dev)
744 {
745         int i;
746 
747         /* we don't support vga_switcheroo.. so just make sure the fbdev
748          * mode is active
749          */
750         struct omap_drm_private *priv = dev->dev_private;
751         int ret;
752 
753         DBG("lastclose: dev=%p", dev);
754 
755         if (dev->mode_config.rotation_property) {
756                 /* need to restore default rotation state.. not sure
757                  * if there is a cleaner way to restore properties to
758                  * default state?  Maybe a flag that properties should
759                  * automatically be restored to default state on
760                  * lastclose?
761                  */
762                 for (i = 0; i < priv->num_crtcs; i++) {
763                         drm_object_property_set_value(&priv->crtcs[i]->base,
764                                         dev->mode_config.rotation_property, 0);
765                 }
766 
767                 for (i = 0; i < priv->num_planes; i++) {
768                         drm_object_property_set_value(&priv->planes[i]->base,
769                                         dev->mode_config.rotation_property, 0);
770                 }
771         }
772 
773         if (priv->fbdev) {
774                 ret = drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
775                 if (ret)
776                         DBG("failed to restore crtc mode");
777         }
778 }
779 
780 static const struct vm_operations_struct omap_gem_vm_ops = {
781         .fault = omap_gem_fault,
782         .open = drm_gem_vm_open,
783         .close = drm_gem_vm_close,
784 };
785 
786 static const struct file_operations omapdriver_fops = {
787         .owner = THIS_MODULE,
788         .open = drm_open,
789         .unlocked_ioctl = drm_ioctl,
790         .release = drm_release,
791         .mmap = omap_gem_mmap,
792         .poll = drm_poll,
793         .read = drm_read,
794         .llseek = noop_llseek,
795 };
796 
797 static struct drm_driver omap_drm_driver = {
798         .driver_features = DRIVER_MODESET | DRIVER_GEM  | DRIVER_PRIME |
799                 DRIVER_ATOMIC,
800         .load = dev_load,
801         .unload = dev_unload,
802         .open = dev_open,
803         .lastclose = dev_lastclose,
804         .get_vblank_counter = drm_vblank_no_hw_counter,
805         .enable_vblank = omap_irq_enable_vblank,
806         .disable_vblank = omap_irq_disable_vblank,
807 #ifdef CONFIG_DEBUG_FS
808         .debugfs_init = omap_debugfs_init,
809         .debugfs_cleanup = omap_debugfs_cleanup,
810 #endif
811         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
812         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
813         .gem_prime_export = omap_gem_prime_export,
814         .gem_prime_import = omap_gem_prime_import,
815         .gem_free_object = omap_gem_free_object,
816         .gem_vm_ops = &omap_gem_vm_ops,
817         .dumb_create = omap_gem_dumb_create,
818         .dumb_map_offset = omap_gem_dumb_map_offset,
819         .dumb_destroy = drm_gem_dumb_destroy,
820         .ioctls = ioctls,
821         .num_ioctls = DRM_OMAP_NUM_IOCTLS,
822         .fops = &omapdriver_fops,
823         .name = DRIVER_NAME,
824         .desc = DRIVER_DESC,
825         .date = DRIVER_DATE,
826         .major = DRIVER_MAJOR,
827         .minor = DRIVER_MINOR,
828         .patchlevel = DRIVER_PATCHLEVEL,
829 };
830 
831 static int pdev_probe(struct platform_device *device)
832 {
833         int r;
834 
835         if (omapdss_is_initialized() == false)
836                 return -EPROBE_DEFER;
837 
838         omap_crtc_pre_init();
839 
840         r = omap_connect_dssdevs();
841         if (r) {
842                 omap_crtc_pre_uninit();
843                 return r;
844         }
845 
846         DBG("%s", device->name);
847         return drm_platform_init(&omap_drm_driver, device);
848 }
849 
850 static int pdev_remove(struct platform_device *device)
851 {
852         DBG("");
853 
854         drm_put_dev(platform_get_drvdata(device));
855 
856         omap_disconnect_dssdevs();
857         omap_crtc_pre_uninit();
858 
859         return 0;
860 }
861 
862 #ifdef CONFIG_PM_SLEEP
863 static int omap_drm_suspend_all_displays(void)
864 {
865         struct omap_dss_device *dssdev = NULL;
866 
867         for_each_dss_dev(dssdev) {
868                 if (!dssdev->driver)
869                         continue;
870 
871                 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
872                         dssdev->driver->disable(dssdev);
873                         dssdev->activate_after_resume = true;
874                 } else {
875                         dssdev->activate_after_resume = false;
876                 }
877         }
878 
879         return 0;
880 }
881 
882 static int omap_drm_resume_all_displays(void)
883 {
884         struct omap_dss_device *dssdev = NULL;
885 
886         for_each_dss_dev(dssdev) {
887                 if (!dssdev->driver)
888                         continue;
889 
890                 if (dssdev->activate_after_resume) {
891                         dssdev->driver->enable(dssdev);
892                         dssdev->activate_after_resume = false;
893                 }
894         }
895 
896         return 0;
897 }
898 
899 static int omap_drm_suspend(struct device *dev)
900 {
901         struct drm_device *drm_dev = dev_get_drvdata(dev);
902 
903         drm_kms_helper_poll_disable(drm_dev);
904 
905         drm_modeset_lock_all(drm_dev);
906         omap_drm_suspend_all_displays();
907         drm_modeset_unlock_all(drm_dev);
908 
909         return 0;
910 }
911 
912 static int omap_drm_resume(struct device *dev)
913 {
914         struct drm_device *drm_dev = dev_get_drvdata(dev);
915 
916         drm_modeset_lock_all(drm_dev);
917         omap_drm_resume_all_displays();
918         drm_modeset_unlock_all(drm_dev);
919 
920         drm_kms_helper_poll_enable(drm_dev);
921 
922         return omap_gem_resume(dev);
923 }
924 #endif
925 
926 static SIMPLE_DEV_PM_OPS(omapdrm_pm_ops, omap_drm_suspend, omap_drm_resume);
927 
928 static struct platform_driver pdev = {
929         .driver = {
930                 .name = DRIVER_NAME,
931                 .pm = &omapdrm_pm_ops,
932         },
933         .probe = pdev_probe,
934         .remove = pdev_remove,
935 };
936 
937 static struct platform_driver * const drivers[] = {
938         &omap_dmm_driver,
939         &pdev,
940 };
941 
942 static int __init omap_drm_init(void)
943 {
944         DBG("init");
945 
946         return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
947 }
948 
949 static void __exit omap_drm_fini(void)
950 {
951         DBG("fini");
952 
953         platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
954 }
955 
956 /* need late_initcall() so we load after dss_driver's are loaded */
957 late_initcall(omap_drm_init);
958 module_exit(omap_drm_fini);
959 
960 MODULE_AUTHOR("Rob Clark <rob@ti.com>");
961 MODULE_DESCRIPTION("OMAP DRM Display Driver");
962 MODULE_ALIAS("platform:" DRIVER_NAME);
963 MODULE_LICENSE("GPL v2");
964 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us