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 (laurent.pinchart@ideasonboard.com) 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 vsp1_pipeline *pipe, 74 struct vsp1_dl_list *dl, 75 struct vsp1_dl_body *dlb) 76 { 77 if (entity->ops->configure_stream) 78 entity->ops->configure_stream(entity, pipe, dl, dlb); 79 } 80 81 void vsp1_entity_configure_frame(struct vsp1_entity *entity, 82 struct vsp1_pipeline *pipe, 83 struct vsp1_dl_list *dl, 84 struct vsp1_dl_body *dlb) 85 { 86 if (entity->ops->configure_frame) 87 entity->ops->configure_frame(entity, pipe, dl, dlb); 88 } 89 90 void vsp1_entity_configure_partition(struct vsp1_entity *entity, 91 struct vsp1_pipeline *pipe, 92 struct vsp1_dl_list *dl, 93 struct vsp1_dl_body *dlb) 94 { 95 if (entity->ops->configure_partition) 96 entity->ops->configure_partition(entity, pipe, dl, dlb); 97 } 98 99 /* ----------------------------------------------------------------------------- 100 * V4L2 Subdevice Operations 101 */ 102 103 /** 104 * vsp1_entity_get_state - Get the subdev state for an entity 105 * @entity: the entity 106 * @sd_state: the TRY state 107 * @which: state selector (ACTIVE or TRY) 108 * 109 * When called with which set to V4L2_SUBDEV_FORMAT_ACTIVE the caller must hold 110 * the entity lock to access the returned configuration. 111 * 112 * Return the subdev state requested by the which argument. The TRY state is 113 * passed explicitly to the function through the sd_state argument and simply 114 * returned when requested. The ACTIVE state comes from the entity structure. 115 */ 116 struct v4l2_subdev_state * 117 vsp1_entity_get_state(struct vsp1_entity *entity, 118 struct v4l2_subdev_state *sd_state, 119 enum v4l2_subdev_format_whence which) 120 { 121 switch (which) { 122 case V4L2_SUBDEV_FORMAT_ACTIVE: 123 return entity->state; 124 case V4L2_SUBDEV_FORMAT_TRY: 125 default: 126 return sd_state; 127 } 128 } 129 130 /** 131 * vsp1_entity_get_pad_format - Get a pad format from storage for an entity 132 * @entity: the entity 133 * @sd_state: the state storage 134 * @pad: the pad number 135 * 136 * Return the format stored in the given configuration for an entity's pad. The 137 * configuration can be an ACTIVE or TRY configuration. 138 */ 139 struct v4l2_mbus_framefmt * 140 vsp1_entity_get_pad_format(struct vsp1_entity *entity, 141 struct v4l2_subdev_state *sd_state, 142 unsigned int pad) 143 { 144 return v4l2_subdev_state_get_format(sd_state, pad); 145 } 146 147 /** 148 * vsp1_entity_get_pad_selection - Get a pad selection from storage for entity 149 * @entity: the entity 150 * @sd_state: the state storage 151 * @pad: the pad number 152 * @target: the selection target 153 * 154 * Return the selection rectangle stored in the given configuration for an 155 * entity's pad. The configuration can be an ACTIVE or TRY configuration. The 156 * selection target can be COMPOSE or CROP. 157 */ 158 struct v4l2_rect * 159 vsp1_entity_get_pad_selection(struct vsp1_entity *entity, 160 struct v4l2_subdev_state *sd_state, 161 unsigned int pad, unsigned int target) 162 { 163 switch (target) { 164 case V4L2_SEL_TGT_COMPOSE: 165 return v4l2_subdev_state_get_compose(sd_state, pad); 166 case V4L2_SEL_TGT_CROP: 167 return v4l2_subdev_state_get_crop(sd_state, pad); 168 default: 169 return NULL; 170 } 171 } 172 173 /* 174 * vsp1_entity_init_cfg - Initialize formats on all pads 175 * @subdev: V4L2 subdevice 176 * @sd_state: V4L2 subdev state 177 * 178 * Initialize all pad formats with default values in the given subdev state. 179 * This function can be used as a handler for the subdev pad::init_cfg 180 * operation. 181 */ 182 int vsp1_entity_init_cfg(struct v4l2_subdev *subdev, 183 struct v4l2_subdev_state *sd_state) 184 { 185 unsigned int pad; 186 187 for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) { 188 struct v4l2_subdev_format format = { 189 .pad = pad, 190 .which = sd_state ? V4L2_SUBDEV_FORMAT_TRY 191 : V4L2_SUBDEV_FORMAT_ACTIVE, 192 }; 193 194 v4l2_subdev_call(subdev, pad, set_fmt, sd_state, &format); 195 } 196 197 return 0; 198 } 199 200 /* 201 * vsp1_subdev_get_pad_format - Subdev pad get_fmt handler 202 * @subdev: V4L2 subdevice 203 * @sd_state: V4L2 subdev state 204 * @fmt: V4L2 subdev format 205 * 206 * This function implements the subdev get_fmt pad operation. It can be used as 207 * a direct drop-in for the operation handler. 208 */ 209 int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev, 210 struct v4l2_subdev_state *sd_state, 211 struct v4l2_subdev_format *fmt) 212 { 213 struct vsp1_entity *entity = to_vsp1_entity(subdev); 214 struct v4l2_subdev_state *state; 215 216 state = vsp1_entity_get_state(entity, sd_state, fmt->which); 217 if (!state) 218 return -EINVAL; 219 220 mutex_lock(&entity->lock); 221 fmt->format = *vsp1_entity_get_pad_format(entity, state, fmt->pad); 222 mutex_unlock(&entity->lock); 223 224 return 0; 225 } 226 227 /* 228 * vsp1_subdev_enum_mbus_code - Subdev pad enum_mbus_code handler 229 * @subdev: V4L2 subdevice 230 * @sd_state: V4L2 subdev state 231 * @code: Media bus code enumeration 232 * @codes: Array of supported media bus codes 233 * @ncodes: Number of supported media bus codes 234 * 235 * This function implements the subdev enum_mbus_code pad operation for entities 236 * that do not support format conversion. It enumerates the given supported 237 * media bus codes on the sink pad and reports a source pad format identical to 238 * the sink pad. 239 */ 240 int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev, 241 struct v4l2_subdev_state *sd_state, 242 struct v4l2_subdev_mbus_code_enum *code, 243 const unsigned int *codes, unsigned int ncodes) 244 { 245 struct vsp1_entity *entity = to_vsp1_entity(subdev); 246 247 if (code->pad == 0) { 248 if (code->index >= ncodes) 249 return -EINVAL; 250 251 code->code = codes[code->index]; 252 } else { 253 struct v4l2_subdev_state *state; 254 struct v4l2_mbus_framefmt *format; 255 256 /* 257 * The entity can't perform format conversion, the sink format 258 * is always identical to the source format. 259 */ 260 if (code->index) 261 return -EINVAL; 262 263 state = vsp1_entity_get_state(entity, sd_state, code->which); 264 if (!state) 265 return -EINVAL; 266 267 mutex_lock(&entity->lock); 268 format = vsp1_entity_get_pad_format(entity, state, 0); 269 code->code = format->code; 270 mutex_unlock(&entity->lock); 271 } 272 273 return 0; 274 } 275 276 /* 277 * vsp1_subdev_enum_frame_size - Subdev pad enum_frame_size handler 278 * @subdev: V4L2 subdevice 279 * @sd_state: V4L2 subdev state 280 * @fse: Frame size enumeration 281 * @min_width: Minimum image width 282 * @min_height: Minimum image height 283 * @max_width: Maximum image width 284 * @max_height: Maximum image height 285 * 286 * This function implements the subdev enum_frame_size pad operation for 287 * entities that do not support scaling or cropping. It reports the given 288 * minimum and maximum frame width and height on the sink pad, and a fixed 289 * source pad size identical to the sink pad. 290 */ 291 int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev, 292 struct v4l2_subdev_state *sd_state, 293 struct v4l2_subdev_frame_size_enum *fse, 294 unsigned int min_width, unsigned int min_height, 295 unsigned int max_width, unsigned int max_height) 296 { 297 struct vsp1_entity *entity = to_vsp1_entity(subdev); 298 struct v4l2_subdev_state *state; 299 struct v4l2_mbus_framefmt *format; 300 int ret = 0; 301 302 state = vsp1_entity_get_state(entity, sd_state, fse->which); 303 if (!state) 304 return -EINVAL; 305 306 format = vsp1_entity_get_pad_format(entity, state, fse->pad); 307 308 mutex_lock(&entity->lock); 309 310 if (fse->index || fse->code != format->code) { 311 ret = -EINVAL; 312 goto done; 313 } 314 315 if (fse->pad == 0) { 316 fse->min_width = min_width; 317 fse->max_width = max_width; 318 fse->min_height = min_height; 319 fse->max_height = max_height; 320 } else { 321 /* 322 * The size on the source pad are fixed and always identical to 323 * the size on the sink pad. 324 */ 325 fse->min_width = format->width; 326 fse->max_width = format->width; 327 fse->min_height = format->height; 328 fse->max_height = format->height; 329 } 330 331 done: 332 mutex_unlock(&entity->lock); 333 return ret; 334 } 335 336 /* 337 * vsp1_subdev_set_pad_format - Subdev pad set_fmt handler 338 * @subdev: V4L2 subdevice 339 * @sd_state: V4L2 subdev state 340 * @fmt: V4L2 subdev format 341 * @codes: Array of supported media bus codes 342 * @ncodes: Number of supported media bus codes 343 * @min_width: Minimum image width 344 * @min_height: Minimum image height 345 * @max_width: Maximum image width 346 * @max_height: Maximum image height 347 * 348 * This function implements the subdev set_fmt pad operation for entities that 349 * do not support scaling or cropping. It defaults to the first supplied media 350 * bus code if the requested code isn't supported, clamps the size to the 351 * supplied minimum and maximum, and propagates the sink pad format to the 352 * source pad. 353 */ 354 int vsp1_subdev_set_pad_format(struct v4l2_subdev *subdev, 355 struct v4l2_subdev_state *sd_state, 356 struct v4l2_subdev_format *fmt, 357 const unsigned int *codes, unsigned int ncodes, 358 unsigned int min_width, unsigned int min_height, 359 unsigned int max_width, unsigned int max_height) 360 { 361 struct vsp1_entity *entity = to_vsp1_entity(subdev); 362 struct v4l2_subdev_state *state; 363 struct v4l2_mbus_framefmt *format; 364 struct v4l2_rect *selection; 365 unsigned int i; 366 int ret = 0; 367 368 mutex_lock(&entity->lock); 369 370 state = vsp1_entity_get_state(entity, sd_state, fmt->which); 371 if (!state) { 372 ret = -EINVAL; 373 goto done; 374 } 375 376 format = vsp1_entity_get_pad_format(entity, state, fmt->pad); 377 378 if (fmt->pad == entity->source_pad) { 379 /* The output format can't be modified. */ 380 fmt->format = *format; 381 goto done; 382 } 383 384 /* 385 * Default to the first media bus code if the requested format is not 386 * supported. 387 */ 388 for (i = 0; i < ncodes; ++i) { 389 if (fmt->format.code == codes[i]) 390 break; 391 } 392 393 format->code = i < ncodes ? codes[i] : codes[0]; 394 format->width = clamp_t(unsigned int, fmt->format.width, 395 min_width, max_width); 396 format->height = clamp_t(unsigned int, fmt->format.height, 397 min_height, max_height); 398 format->field = V4L2_FIELD_NONE; 399 format->colorspace = V4L2_COLORSPACE_SRGB; 400 401 fmt->format = *format; 402 403 /* Propagate the format to the source pad. */ 404 format = vsp1_entity_get_pad_format(entity, state, entity->source_pad); 405 *format = fmt->format; 406 407 /* Reset the crop and compose rectangles. */ 408 selection = vsp1_entity_get_pad_selection(entity, state, fmt->pad, 409 V4L2_SEL_TGT_CROP); 410 selection->left = 0; 411 selection->top = 0; 412 selection->width = format->width; 413 selection->height = format->height; 414 415 selection = vsp1_entity_get_pad_selection(entity, state, fmt->pad, 416 V4L2_SEL_TGT_COMPOSE); 417 selection->left = 0; 418 selection->top = 0; 419 selection->width = format->width; 420 selection->height = format->height; 421 422 done: 423 mutex_unlock(&entity->lock); 424 return ret; 425 } 426 427 /* ----------------------------------------------------------------------------- 428 * Media Operations 429 */ 430 431 static inline struct vsp1_entity * 432 media_entity_to_vsp1_entity(struct media_entity *entity) 433 { 434 return container_of(entity, struct vsp1_entity, subdev.entity); 435 } 436 437 static int vsp1_entity_link_setup_source(const struct media_pad *source_pad, 438 const struct media_pad *sink_pad, 439 u32 flags) 440 { 441 struct vsp1_entity *source; 442 443 source = media_entity_to_vsp1_entity(source_pad->entity); 444 445 if (!source->route) 446 return 0; 447 448 if (flags & MEDIA_LNK_FL_ENABLED) { 449 struct vsp1_entity *sink 450 = media_entity_to_vsp1_entity(sink_pad->entity); 451 452 /* 453 * Fan-out is limited to one for the normal data path plus 454 * optional HGO and HGT. We ignore the HGO and HGT here. 455 */ 456 if (sink->type != VSP1_ENTITY_HGO && 457 sink->type != VSP1_ENTITY_HGT) { 458 if (source->sink) 459 return -EBUSY; 460 source->sink = sink; 461 source->sink_pad = sink_pad->index; 462 } 463 } else { 464 source->sink = NULL; 465 source->sink_pad = 0; 466 } 467 468 return 0; 469 } 470 471 static int vsp1_entity_link_setup_sink(const struct media_pad *source_pad, 472 const struct media_pad *sink_pad, 473 u32 flags) 474 { 475 struct vsp1_entity *sink; 476 struct vsp1_entity *source; 477 478 sink = media_entity_to_vsp1_entity(sink_pad->entity); 479 source = media_entity_to_vsp1_entity(source_pad->entity); 480 481 if (flags & MEDIA_LNK_FL_ENABLED) { 482 /* Fan-in is limited to one. */ 483 if (sink->sources[sink_pad->index]) 484 return -EBUSY; 485 486 sink->sources[sink_pad->index] = source; 487 } else { 488 sink->sources[sink_pad->index] = NULL; 489 } 490 491 return 0; 492 } 493 494 int vsp1_entity_link_setup(struct media_entity *entity, 495 const struct media_pad *local, 496 const struct media_pad *remote, u32 flags) 497 { 498 if (local->flags & MEDIA_PAD_FL_SOURCE) 499 return vsp1_entity_link_setup_source(local, remote, flags); 500 else 501 return vsp1_entity_link_setup_sink(remote, local, flags); 502 } 503 504 /** 505 * vsp1_entity_remote_pad - Find the pad at the remote end of a link 506 * @pad: Pad at the local end of the link 507 * 508 * Search for a remote pad connected to the given pad by iterating over all 509 * links originating or terminating at that pad until an enabled link is found. 510 * 511 * Our link setup implementation guarantees that the output fan-out will not be 512 * higher than one for the data pipelines, except for the links to the HGO and 513 * HGT that can be enabled in addition to a regular data link. When traversing 514 * outgoing links this function ignores HGO and HGT entities and should thus be 515 * used in place of the generic media_pad_remote_pad_first() function to 516 * traverse data pipelines. 517 * 518 * Return a pointer to the pad at the remote end of the first found enabled 519 * link, or NULL if no enabled link has been found. 520 */ 521 struct media_pad *vsp1_entity_remote_pad(struct media_pad *pad) 522 { 523 struct media_link *link; 524 525 list_for_each_entry(link, &pad->entity->links, list) { 526 struct vsp1_entity *entity; 527 528 if (!(link->flags & MEDIA_LNK_FL_ENABLED)) 529 continue; 530 531 /* If we're the sink the source will never be an HGO or HGT. */ 532 if (link->sink == pad) 533 return link->source; 534 535 if (link->source != pad) 536 continue; 537 538 /* If the sink isn't a subdevice it can't be an HGO or HGT. */ 539 if (!is_media_entity_v4l2_subdev(link->sink->entity)) 540 return link->sink; 541 542 entity = media_entity_to_vsp1_entity(link->sink->entity); 543 if (entity->type != VSP1_ENTITY_HGO && 544 entity->type != VSP1_ENTITY_HGT) 545 return link->sink; 546 } 547 548 return NULL; 549 550 } 551 552 /* ----------------------------------------------------------------------------- 553 * Initialization 554 */ 555 556 #define VSP1_ENTITY_ROUTE(ent) \ 557 { VSP1_ENTITY_##ent, 0, VI6_DPR_##ent##_ROUTE, \ 558 { VI6_DPR_NODE_##ent }, VI6_DPR_NODE_##ent } 559 560 #define VSP1_ENTITY_ROUTE_RPF(idx) \ 561 { VSP1_ENTITY_RPF, idx, VI6_DPR_RPF_ROUTE(idx), \ 562 { 0, }, VI6_DPR_NODE_RPF(idx) } 563 564 #define VSP1_ENTITY_ROUTE_UDS(idx) \ 565 { VSP1_ENTITY_UDS, idx, VI6_DPR_UDS_ROUTE(idx), \ 566 { VI6_DPR_NODE_UDS(idx) }, VI6_DPR_NODE_UDS(idx) } 567 568 #define VSP1_ENTITY_ROUTE_UIF(idx) \ 569 { VSP1_ENTITY_UIF, idx, VI6_DPR_UIF_ROUTE(idx), \ 570 { VI6_DPR_NODE_UIF(idx) }, VI6_DPR_NODE_UIF(idx) } 571 572 #define VSP1_ENTITY_ROUTE_WPF(idx) \ 573 { VSP1_ENTITY_WPF, idx, 0, \ 574 { VI6_DPR_NODE_WPF(idx) }, VI6_DPR_NODE_WPF(idx) } 575 576 static const struct vsp1_route vsp1_routes[] = { 577 { VSP1_ENTITY_BRS, 0, VI6_DPR_ILV_BRS_ROUTE, 578 { VI6_DPR_NODE_BRS_IN(0), VI6_DPR_NODE_BRS_IN(1) }, 0 }, 579 { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE, 580 { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1), 581 VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3), 582 VI6_DPR_NODE_BRU_IN(4) }, VI6_DPR_NODE_BRU_OUT }, 583 VSP1_ENTITY_ROUTE(CLU), 584 { VSP1_ENTITY_HGO, 0, 0, { 0, }, 0 }, 585 { VSP1_ENTITY_HGT, 0, 0, { 0, }, 0 }, 586 VSP1_ENTITY_ROUTE(HSI), 587 VSP1_ENTITY_ROUTE(HST), 588 { VSP1_ENTITY_LIF, 0, 0, { 0, }, 0 }, 589 { VSP1_ENTITY_LIF, 1, 0, { 0, }, 0 }, 590 VSP1_ENTITY_ROUTE(LUT), 591 VSP1_ENTITY_ROUTE_RPF(0), 592 VSP1_ENTITY_ROUTE_RPF(1), 593 VSP1_ENTITY_ROUTE_RPF(2), 594 VSP1_ENTITY_ROUTE_RPF(3), 595 VSP1_ENTITY_ROUTE_RPF(4), 596 VSP1_ENTITY_ROUTE(SRU), 597 VSP1_ENTITY_ROUTE_UDS(0), 598 VSP1_ENTITY_ROUTE_UDS(1), 599 VSP1_ENTITY_ROUTE_UDS(2), 600 VSP1_ENTITY_ROUTE_UIF(0), /* Named UIF4 in the documentation */ 601 VSP1_ENTITY_ROUTE_UIF(1), /* Named UIF5 in the documentation */ 602 VSP1_ENTITY_ROUTE_WPF(0), 603 VSP1_ENTITY_ROUTE_WPF(1), 604 VSP1_ENTITY_ROUTE_WPF(2), 605 VSP1_ENTITY_ROUTE_WPF(3), 606 }; 607 608 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, 609 const char *name, unsigned int num_pads, 610 const struct v4l2_subdev_ops *ops, u32 function) 611 { 612 static struct lock_class_key key; 613 struct v4l2_subdev *subdev; 614 unsigned int i; 615 int ret; 616 617 for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) { 618 if (vsp1_routes[i].type == entity->type && 619 vsp1_routes[i].index == entity->index) { 620 entity->route = &vsp1_routes[i]; 621 break; 622 } 623 } 624 625 if (i == ARRAY_SIZE(vsp1_routes)) 626 return -EINVAL; 627 628 mutex_init(&entity->lock); 629 630 entity->vsp1 = vsp1; 631 entity->source_pad = num_pads - 1; 632 633 /* Allocate and initialize pads. */ 634 entity->pads = devm_kcalloc(vsp1->dev, 635 num_pads, sizeof(*entity->pads), 636 GFP_KERNEL); 637 if (entity->pads == NULL) 638 return -ENOMEM; 639 640 for (i = 0; i < num_pads - 1; ++i) 641 entity->pads[i].flags = MEDIA_PAD_FL_SINK; 642 643 entity->sources = devm_kcalloc(vsp1->dev, max(num_pads - 1, 1U), 644 sizeof(*entity->sources), GFP_KERNEL); 645 if (entity->sources == NULL) 646 return -ENOMEM; 647 648 /* Single-pad entities only have a sink. */ 649 entity->pads[num_pads - 1].flags = num_pads > 1 ? MEDIA_PAD_FL_SOURCE 650 : MEDIA_PAD_FL_SINK; 651 652 /* Initialize the media entity. */ 653 ret = media_entity_pads_init(&entity->subdev.entity, num_pads, 654 entity->pads); 655 if (ret < 0) 656 return ret; 657 658 /* Initialize the V4L2 subdev. */ 659 subdev = &entity->subdev; 660 v4l2_subdev_init(subdev, ops); 661 662 subdev->entity.function = function; 663 subdev->entity.ops = &vsp1->media_ops; 664 subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 665 666 snprintf(subdev->name, sizeof(subdev->name), "%s %s", 667 dev_name(vsp1->dev), name); 668 669 vsp1_entity_init_cfg(subdev, NULL); 670 671 /* 672 * Allocate the subdev state to store formats and selection 673 * rectangles. 674 */ 675 /* 676 * FIXME: Drop this call, drivers are not supposed to use 677 * __v4l2_subdev_state_alloc(). 678 */ 679 entity->state = __v4l2_subdev_state_alloc(&entity->subdev, 680 "vsp1:state->lock", &key); 681 if (IS_ERR(entity->state)) { 682 media_entity_cleanup(&entity->subdev.entity); 683 return PTR_ERR(entity->state); 684 } 685 686 return 0; 687 } 688 689 void vsp1_entity_destroy(struct vsp1_entity *entity) 690 { 691 if (entity->ops && entity->ops->destroy) 692 entity->ops->destroy(entity); 693 if (entity->subdev.ctrl_handler) 694 v4l2_ctrl_handler_free(entity->subdev.ctrl_handler); 695 __v4l2_subdev_state_free(entity->state); 696 media_entity_cleanup(&entity->subdev.entity); 697 } 698