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Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
[J-linux.git] / drivers / media / platform / renesas / vsp1 / vsp1_entity.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * vsp1_entity.c  --  R-Car VSP1 Base Entity
4  *
5  * Copyright (C) 2013-2014 Renesas Electronics Corporation
6  *
7  * Contact: Laurent Pinchart ([email protected])
8  */
9
10 #include <linux/device.h>
11 #include <linux/gfp.h>
12
13 #include <media/media-entity.h>
14 #include <media/v4l2-ctrls.h>
15 #include <media/v4l2-subdev.h>
16
17 #include "vsp1.h"
18 #include "vsp1_dl.h"
19 #include "vsp1_entity.h"
20 #include "vsp1_pipe.h"
21 #include "vsp1_rwpf.h"
22
23 void vsp1_entity_route_setup(struct vsp1_entity *entity,
24                              struct vsp1_pipeline *pipe,
25                              struct vsp1_dl_body *dlb)
26 {
27         struct vsp1_entity *source;
28         u32 route;
29
30         if (entity->type == VSP1_ENTITY_HGO) {
31                 u32 smppt;
32
33                 /*
34                  * The HGO is a special case, its routing is configured on the
35                  * sink pad.
36                  */
37                 source = entity->sources[0];
38                 smppt = (pipe->output->entity.index << VI6_DPR_SMPPT_TGW_SHIFT)
39                       | (source->route->output << VI6_DPR_SMPPT_PT_SHIFT);
40
41                 vsp1_dl_body_write(dlb, VI6_DPR_HGO_SMPPT, smppt);
42                 return;
43         } else if (entity->type == VSP1_ENTITY_HGT) {
44                 u32 smppt;
45
46                 /*
47                  * The HGT is a special case, its routing is configured on the
48                  * sink pad.
49                  */
50                 source = entity->sources[0];
51                 smppt = (pipe->output->entity.index << VI6_DPR_SMPPT_TGW_SHIFT)
52                       | (source->route->output << VI6_DPR_SMPPT_PT_SHIFT);
53
54                 vsp1_dl_body_write(dlb, VI6_DPR_HGT_SMPPT, smppt);
55                 return;
56         }
57
58         source = entity;
59         if (source->route->reg == 0)
60                 return;
61
62         route = source->sink->route->inputs[source->sink_pad];
63         /*
64          * The ILV and BRS share the same data path route. The extra BRSSEL bit
65          * selects between the ILV and BRS.
66          */
67         if (source->type == VSP1_ENTITY_BRS)
68                 route |= VI6_DPR_ROUTE_BRSSEL;
69         vsp1_dl_body_write(dlb, source->route->reg, route);
70 }
71
72 void vsp1_entity_configure_stream(struct vsp1_entity *entity,
73                                   struct v4l2_subdev_state *state,
74                                   struct vsp1_pipeline *pipe,
75                                   struct vsp1_dl_list *dl,
76                                   struct vsp1_dl_body *dlb)
77 {
78         if (entity->ops->configure_stream)
79                 entity->ops->configure_stream(entity, state, pipe, dl, dlb);
80 }
81
82 void vsp1_entity_configure_frame(struct vsp1_entity *entity,
83                                  struct vsp1_pipeline *pipe,
84                                  struct vsp1_dl_list *dl,
85                                  struct vsp1_dl_body *dlb)
86 {
87         if (entity->ops->configure_frame)
88                 entity->ops->configure_frame(entity, pipe, dl, dlb);
89 }
90
91 void vsp1_entity_configure_partition(struct vsp1_entity *entity,
92                                      struct vsp1_pipeline *pipe,
93                                      const struct vsp1_partition *partition,
94                                      struct vsp1_dl_list *dl,
95                                      struct vsp1_dl_body *dlb)
96 {
97         if (entity->ops->configure_partition)
98                 entity->ops->configure_partition(entity, pipe, partition,
99                                                  dl, dlb);
100 }
101
102 /* -----------------------------------------------------------------------------
103  * V4L2 Subdevice Operations
104  */
105
106 /**
107  * vsp1_entity_get_state - Get the subdev state for an entity
108  * @entity: the entity
109  * @sd_state: the TRY state
110  * @which: state selector (ACTIVE or TRY)
111  *
112  * When called with which set to V4L2_SUBDEV_FORMAT_ACTIVE the caller must hold
113  * the entity lock to access the returned configuration.
114  *
115  * Return the subdev state requested by the which argument. The TRY state is
116  * passed explicitly to the function through the sd_state argument and simply
117  * returned when requested. The ACTIVE state comes from the entity structure.
118  */
119 struct v4l2_subdev_state *
120 vsp1_entity_get_state(struct vsp1_entity *entity,
121                       struct v4l2_subdev_state *sd_state,
122                       enum v4l2_subdev_format_whence which)
123 {
124         switch (which) {
125         case V4L2_SUBDEV_FORMAT_ACTIVE:
126                 return entity->state;
127         case V4L2_SUBDEV_FORMAT_TRY:
128         default:
129                 return sd_state;
130         }
131 }
132
133 /*
134  * vsp1_subdev_get_pad_format - Subdev pad get_fmt handler
135  * @subdev: V4L2 subdevice
136  * @sd_state: V4L2 subdev state
137  * @fmt: V4L2 subdev format
138  *
139  * This function implements the subdev get_fmt pad operation. It can be used as
140  * a direct drop-in for the operation handler.
141  */
142 int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev,
143                                struct v4l2_subdev_state *sd_state,
144                                struct v4l2_subdev_format *fmt)
145 {
146         struct vsp1_entity *entity = to_vsp1_entity(subdev);
147         struct v4l2_subdev_state *state;
148
149         state = vsp1_entity_get_state(entity, sd_state, fmt->which);
150         if (!state)
151                 return -EINVAL;
152
153         mutex_lock(&entity->lock);
154         fmt->format = *v4l2_subdev_state_get_format(state, fmt->pad);
155         mutex_unlock(&entity->lock);
156
157         return 0;
158 }
159
160 /*
161  * vsp1_subdev_enum_mbus_code - Subdev pad enum_mbus_code handler
162  * @subdev: V4L2 subdevice
163  * @sd_state: V4L2 subdev state
164  * @code: Media bus code enumeration
165  * @codes: Array of supported media bus codes
166  * @ncodes: Number of supported media bus codes
167  *
168  * This function implements the subdev enum_mbus_code pad operation for entities
169  * that do not support format conversion. It enumerates the given supported
170  * media bus codes on the sink pad and reports a source pad format identical to
171  * the sink pad.
172  */
173 int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev,
174                                struct v4l2_subdev_state *sd_state,
175                                struct v4l2_subdev_mbus_code_enum *code,
176                                const unsigned int *codes, unsigned int ncodes)
177 {
178         struct vsp1_entity *entity = to_vsp1_entity(subdev);
179
180         if (code->pad == 0) {
181                 if (code->index >= ncodes)
182                         return -EINVAL;
183
184                 code->code = codes[code->index];
185         } else {
186                 struct v4l2_subdev_state *state;
187                 struct v4l2_mbus_framefmt *format;
188
189                 /*
190                  * The entity can't perform format conversion, the sink format
191                  * is always identical to the source format.
192                  */
193                 if (code->index)
194                         return -EINVAL;
195
196                 state = vsp1_entity_get_state(entity, sd_state, code->which);
197                 if (!state)
198                         return -EINVAL;
199
200                 mutex_lock(&entity->lock);
201                 format = v4l2_subdev_state_get_format(state, 0);
202                 code->code = format->code;
203                 mutex_unlock(&entity->lock);
204         }
205
206         return 0;
207 }
208
209 /*
210  * vsp1_subdev_enum_frame_size - Subdev pad enum_frame_size handler
211  * @subdev: V4L2 subdevice
212  * @sd_state: V4L2 subdev state
213  * @fse: Frame size enumeration
214  * @min_width: Minimum image width
215  * @min_height: Minimum image height
216  * @max_width: Maximum image width
217  * @max_height: Maximum image height
218  *
219  * This function implements the subdev enum_frame_size pad operation for
220  * entities that do not support scaling or cropping. It reports the given
221  * minimum and maximum frame width and height on the sink pad, and a fixed
222  * source pad size identical to the sink pad.
223  */
224 int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev,
225                                 struct v4l2_subdev_state *sd_state,
226                                 struct v4l2_subdev_frame_size_enum *fse,
227                                 unsigned int min_width, unsigned int min_height,
228                                 unsigned int max_width, unsigned int max_height)
229 {
230         struct vsp1_entity *entity = to_vsp1_entity(subdev);
231         struct v4l2_subdev_state *state;
232         struct v4l2_mbus_framefmt *format;
233         int ret = 0;
234
235         state = vsp1_entity_get_state(entity, sd_state, fse->which);
236         if (!state)
237                 return -EINVAL;
238
239         format = v4l2_subdev_state_get_format(state, fse->pad);
240
241         mutex_lock(&entity->lock);
242
243         if (fse->index || fse->code != format->code) {
244                 ret = -EINVAL;
245                 goto done;
246         }
247
248         if (fse->pad == 0) {
249                 fse->min_width = min_width;
250                 fse->max_width = max_width;
251                 fse->min_height = min_height;
252                 fse->max_height = max_height;
253         } else {
254                 /*
255                  * The size on the source pad are fixed and always identical to
256                  * the size on the sink pad.
257                  */
258                 fse->min_width = format->width;
259                 fse->max_width = format->width;
260                 fse->min_height = format->height;
261                 fse->max_height = format->height;
262         }
263
264 done:
265         mutex_unlock(&entity->lock);
266         return ret;
267 }
268
269 /*
270  * vsp1_subdev_set_pad_format - Subdev pad set_fmt handler
271  * @subdev: V4L2 subdevice
272  * @sd_state: V4L2 subdev state
273  * @fmt: V4L2 subdev format
274  * @codes: Array of supported media bus codes
275  * @ncodes: Number of supported media bus codes
276  * @min_width: Minimum image width
277  * @min_height: Minimum image height
278  * @max_width: Maximum image width
279  * @max_height: Maximum image height
280  *
281  * This function implements the subdev set_fmt pad operation for entities that
282  * do not support scaling or cropping. It defaults to the first supplied media
283  * bus code if the requested code isn't supported, clamps the size to the
284  * supplied minimum and maximum, and propagates the sink pad format to the
285  * source pad.
286  */
287 int vsp1_subdev_set_pad_format(struct v4l2_subdev *subdev,
288                                struct v4l2_subdev_state *sd_state,
289                                struct v4l2_subdev_format *fmt,
290                                const unsigned int *codes, unsigned int ncodes,
291                                unsigned int min_width, unsigned int min_height,
292                                unsigned int max_width, unsigned int max_height)
293 {
294         struct vsp1_entity *entity = to_vsp1_entity(subdev);
295         struct v4l2_subdev_state *state;
296         struct v4l2_mbus_framefmt *format;
297         struct v4l2_rect *selection;
298         unsigned int i;
299         int ret = 0;
300
301         mutex_lock(&entity->lock);
302
303         state = vsp1_entity_get_state(entity, sd_state, fmt->which);
304         if (!state) {
305                 ret = -EINVAL;
306                 goto done;
307         }
308
309         format = v4l2_subdev_state_get_format(state, fmt->pad);
310
311         if (fmt->pad == entity->source_pad) {
312                 /* The output format can't be modified. */
313                 fmt->format = *format;
314                 goto done;
315         }
316
317         /*
318          * Default to the first media bus code if the requested format is not
319          * supported.
320          */
321         for (i = 0; i < ncodes; ++i) {
322                 if (fmt->format.code == codes[i])
323                         break;
324         }
325
326         format->code = i < ncodes ? codes[i] : codes[0];
327         format->width = clamp_t(unsigned int, fmt->format.width,
328                                 min_width, max_width);
329         format->height = clamp_t(unsigned int, fmt->format.height,
330                                  min_height, max_height);
331         format->field = V4L2_FIELD_NONE;
332         format->colorspace = V4L2_COLORSPACE_SRGB;
333
334         fmt->format = *format;
335
336         /* Propagate the format to the source pad. */
337         format = v4l2_subdev_state_get_format(state, entity->source_pad);
338         *format = fmt->format;
339
340         /* Reset the crop and compose rectangles. */
341         selection = v4l2_subdev_state_get_crop(state, fmt->pad);
342         selection->left = 0;
343         selection->top = 0;
344         selection->width = format->width;
345         selection->height = format->height;
346
347         selection = v4l2_subdev_state_get_compose(state, fmt->pad);
348         selection->left = 0;
349         selection->top = 0;
350         selection->width = format->width;
351         selection->height = format->height;
352
353 done:
354         mutex_unlock(&entity->lock);
355         return ret;
356 }
357
358 static int vsp1_entity_init_state(struct v4l2_subdev *subdev,
359                                   struct v4l2_subdev_state *sd_state)
360 {
361         unsigned int pad;
362
363         /* Initialize all pad formats with default values. */
364         for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) {
365                 struct v4l2_subdev_format format = {
366                         .pad = pad,
367                         .which = sd_state ? V4L2_SUBDEV_FORMAT_TRY
368                                : V4L2_SUBDEV_FORMAT_ACTIVE,
369                 };
370
371                 v4l2_subdev_call(subdev, pad, set_fmt, sd_state, &format);
372         }
373
374         return 0;
375 }
376
377 static const struct v4l2_subdev_internal_ops vsp1_entity_internal_ops = {
378         .init_state = vsp1_entity_init_state,
379 };
380
381 /* -----------------------------------------------------------------------------
382  * Media Operations
383  */
384
385 static inline struct vsp1_entity *
386 media_entity_to_vsp1_entity(struct media_entity *entity)
387 {
388         return container_of(entity, struct vsp1_entity, subdev.entity);
389 }
390
391 static int vsp1_entity_link_setup_source(const struct media_pad *source_pad,
392                                          const struct media_pad *sink_pad,
393                                          u32 flags)
394 {
395         struct vsp1_entity *source;
396
397         source = media_entity_to_vsp1_entity(source_pad->entity);
398
399         if (!source->route)
400                 return 0;
401
402         if (flags & MEDIA_LNK_FL_ENABLED) {
403                 struct vsp1_entity *sink
404                         = media_entity_to_vsp1_entity(sink_pad->entity);
405
406                 /*
407                  * Fan-out is limited to one for the normal data path plus
408                  * optional HGO and HGT. We ignore the HGO and HGT here.
409                  */
410                 if (sink->type != VSP1_ENTITY_HGO &&
411                     sink->type != VSP1_ENTITY_HGT) {
412                         if (source->sink)
413                                 return -EBUSY;
414                         source->sink = sink;
415                         source->sink_pad = sink_pad->index;
416                 }
417         } else {
418                 source->sink = NULL;
419                 source->sink_pad = 0;
420         }
421
422         return 0;
423 }
424
425 static int vsp1_entity_link_setup_sink(const struct media_pad *source_pad,
426                                        const struct media_pad *sink_pad,
427                                        u32 flags)
428 {
429         struct vsp1_entity *sink;
430         struct vsp1_entity *source;
431
432         sink = media_entity_to_vsp1_entity(sink_pad->entity);
433         source = media_entity_to_vsp1_entity(source_pad->entity);
434
435         if (flags & MEDIA_LNK_FL_ENABLED) {
436                 /* Fan-in is limited to one. */
437                 if (sink->sources[sink_pad->index])
438                         return -EBUSY;
439
440                 sink->sources[sink_pad->index] = source;
441         } else {
442                 sink->sources[sink_pad->index] = NULL;
443         }
444
445         return 0;
446 }
447
448 int vsp1_entity_link_setup(struct media_entity *entity,
449                            const struct media_pad *local,
450                            const struct media_pad *remote, u32 flags)
451 {
452         if (local->flags & MEDIA_PAD_FL_SOURCE)
453                 return vsp1_entity_link_setup_source(local, remote, flags);
454         else
455                 return vsp1_entity_link_setup_sink(remote, local, flags);
456 }
457
458 /**
459  * vsp1_entity_remote_pad - Find the pad at the remote end of a link
460  * @pad: Pad at the local end of the link
461  *
462  * Search for a remote pad connected to the given pad by iterating over all
463  * links originating or terminating at that pad until an enabled link is found.
464  *
465  * Our link setup implementation guarantees that the output fan-out will not be
466  * higher than one for the data pipelines, except for the links to the HGO and
467  * HGT that can be enabled in addition to a regular data link. When traversing
468  * outgoing links this function ignores HGO and HGT entities and should thus be
469  * used in place of the generic media_pad_remote_pad_first() function to
470  * traverse data pipelines.
471  *
472  * Return a pointer to the pad at the remote end of the first found enabled
473  * link, or NULL if no enabled link has been found.
474  */
475 struct media_pad *vsp1_entity_remote_pad(struct media_pad *pad)
476 {
477         struct media_link *link;
478
479         list_for_each_entry(link, &pad->entity->links, list) {
480                 struct vsp1_entity *entity;
481
482                 if (!(link->flags & MEDIA_LNK_FL_ENABLED))
483                         continue;
484
485                 /* If we're the sink the source will never be an HGO or HGT. */
486                 if (link->sink == pad)
487                         return link->source;
488
489                 if (link->source != pad)
490                         continue;
491
492                 /* If the sink isn't a subdevice it can't be an HGO or HGT. */
493                 if (!is_media_entity_v4l2_subdev(link->sink->entity))
494                         return link->sink;
495
496                 entity = media_entity_to_vsp1_entity(link->sink->entity);
497                 if (entity->type != VSP1_ENTITY_HGO &&
498                     entity->type != VSP1_ENTITY_HGT)
499                         return link->sink;
500         }
501
502         return NULL;
503
504 }
505
506 /* -----------------------------------------------------------------------------
507  * Initialization
508  */
509
510 #define VSP1_ENTITY_ROUTE(ent)                                          \
511         { VSP1_ENTITY_##ent, 0, VI6_DPR_##ent##_ROUTE,                  \
512           { VI6_DPR_NODE_##ent }, VI6_DPR_NODE_##ent }
513
514 #define VSP1_ENTITY_ROUTE_RPF(idx)                                      \
515         { VSP1_ENTITY_RPF, idx, VI6_DPR_RPF_ROUTE(idx),                 \
516           { 0, }, VI6_DPR_NODE_RPF(idx) }
517
518 #define VSP1_ENTITY_ROUTE_UDS(idx)                                      \
519         { VSP1_ENTITY_UDS, idx, VI6_DPR_UDS_ROUTE(idx),                 \
520           { VI6_DPR_NODE_UDS(idx) }, VI6_DPR_NODE_UDS(idx) }
521
522 #define VSP1_ENTITY_ROUTE_UIF(idx)                                      \
523         { VSP1_ENTITY_UIF, idx, VI6_DPR_UIF_ROUTE(idx),                 \
524           { VI6_DPR_NODE_UIF(idx) }, VI6_DPR_NODE_UIF(idx) }
525
526 #define VSP1_ENTITY_ROUTE_WPF(idx)                                      \
527         { VSP1_ENTITY_WPF, idx, 0,                                      \
528           { VI6_DPR_NODE_WPF(idx) }, VI6_DPR_NODE_WPF(idx) }
529
530 static const struct vsp1_route vsp1_routes[] = {
531         { VSP1_ENTITY_BRS, 0, VI6_DPR_ILV_BRS_ROUTE,
532           { VI6_DPR_NODE_BRS_IN(0), VI6_DPR_NODE_BRS_IN(1) }, 0 },
533         { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE,
534           { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1),
535             VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3),
536             VI6_DPR_NODE_BRU_IN(4) }, VI6_DPR_NODE_BRU_OUT },
537         VSP1_ENTITY_ROUTE(CLU),
538         { VSP1_ENTITY_HGO, 0, 0, { 0, }, 0 },
539         { VSP1_ENTITY_HGT, 0, 0, { 0, }, 0 },
540         VSP1_ENTITY_ROUTE(HSI),
541         VSP1_ENTITY_ROUTE(HST),
542         { VSP1_ENTITY_LIF, 0, 0, { 0, }, 0 },
543         { VSP1_ENTITY_LIF, 1, 0, { 0, }, 0 },
544         VSP1_ENTITY_ROUTE(LUT),
545         VSP1_ENTITY_ROUTE_RPF(0),
546         VSP1_ENTITY_ROUTE_RPF(1),
547         VSP1_ENTITY_ROUTE_RPF(2),
548         VSP1_ENTITY_ROUTE_RPF(3),
549         VSP1_ENTITY_ROUTE_RPF(4),
550         VSP1_ENTITY_ROUTE(SRU),
551         VSP1_ENTITY_ROUTE_UDS(0),
552         VSP1_ENTITY_ROUTE_UDS(1),
553         VSP1_ENTITY_ROUTE_UDS(2),
554         VSP1_ENTITY_ROUTE_UIF(0),       /* Named UIF4 in the documentation */
555         VSP1_ENTITY_ROUTE_UIF(1),       /* Named UIF5 in the documentation */
556         VSP1_ENTITY_ROUTE_WPF(0),
557         VSP1_ENTITY_ROUTE_WPF(1),
558         VSP1_ENTITY_ROUTE_WPF(2),
559         VSP1_ENTITY_ROUTE_WPF(3),
560 };
561
562 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
563                      const char *name, unsigned int num_pads,
564                      const struct v4l2_subdev_ops *ops, u32 function)
565 {
566         static struct lock_class_key key;
567         struct v4l2_subdev *subdev;
568         unsigned int i;
569         int ret;
570
571         for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) {
572                 if (vsp1_routes[i].type == entity->type &&
573                     vsp1_routes[i].index == entity->index) {
574                         entity->route = &vsp1_routes[i];
575                         break;
576                 }
577         }
578
579         if (i == ARRAY_SIZE(vsp1_routes))
580                 return -EINVAL;
581
582         mutex_init(&entity->lock);
583
584         entity->vsp1 = vsp1;
585         entity->source_pad = num_pads - 1;
586
587         /* Allocate and initialize pads. */
588         entity->pads = devm_kcalloc(vsp1->dev,
589                                     num_pads, sizeof(*entity->pads),
590                                     GFP_KERNEL);
591         if (entity->pads == NULL)
592                 return -ENOMEM;
593
594         for (i = 0; i < num_pads - 1; ++i)
595                 entity->pads[i].flags = MEDIA_PAD_FL_SINK;
596
597         entity->sources = devm_kcalloc(vsp1->dev, max(num_pads - 1, 1U),
598                                        sizeof(*entity->sources), GFP_KERNEL);
599         if (entity->sources == NULL)
600                 return -ENOMEM;
601
602         /* Single-pad entities only have a sink. */
603         entity->pads[num_pads - 1].flags = num_pads > 1 ? MEDIA_PAD_FL_SOURCE
604                                          : MEDIA_PAD_FL_SINK;
605
606         /* Initialize the media entity. */
607         ret = media_entity_pads_init(&entity->subdev.entity, num_pads,
608                                      entity->pads);
609         if (ret < 0)
610                 return ret;
611
612         /* Initialize the V4L2 subdev. */
613         subdev = &entity->subdev;
614         v4l2_subdev_init(subdev, ops);
615         subdev->internal_ops = &vsp1_entity_internal_ops;
616
617         subdev->entity.function = function;
618         subdev->entity.ops = &vsp1->media_ops;
619         subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
620
621         snprintf(subdev->name, sizeof(subdev->name), "%s %s",
622                  dev_name(vsp1->dev), name);
623
624         vsp1_entity_init_state(subdev, NULL);
625
626         /*
627          * Allocate the subdev state to store formats and selection
628          * rectangles.
629          */
630         /*
631          * FIXME: Drop this call, drivers are not supposed to use
632          * __v4l2_subdev_state_alloc().
633          */
634         entity->state = __v4l2_subdev_state_alloc(&entity->subdev,
635                                                   "vsp1:state->lock", &key);
636         if (IS_ERR(entity->state)) {
637                 media_entity_cleanup(&entity->subdev.entity);
638                 return PTR_ERR(entity->state);
639         }
640
641         return 0;
642 }
643
644 void vsp1_entity_destroy(struct vsp1_entity *entity)
645 {
646         if (entity->ops && entity->ops->destroy)
647                 entity->ops->destroy(entity);
648         if (entity->subdev.ctrl_handler)
649                 v4l2_ctrl_handler_free(entity->subdev.ctrl_handler);
650         __v4l2_subdev_state_free(entity->state);
651         media_entity_cleanup(&entity->subdev.entity);
652 }
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