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 23void 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 72void 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 81void 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 90void 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_pad_config - Get the pad configuration for an entity 105 * @entity: the entity 106 * @cfg: the TRY pad configuration 107 * @which: configuration 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 pad configuration requested by the which argument. The TRY 113 * configuration is passed explicitly to the function through the cfg argument 114 * and simply returned when requested. The ACTIVE configuration comes from the 115 * entity structure. 116 */ 117struct v4l2_subdev_pad_config * 118vsp1_entity_get_pad_config(struct vsp1_entity *entity, 119 struct v4l2_subdev_pad_config *cfg, 120 enum v4l2_subdev_format_whence which) 121{ 122 switch (which) { 123 case V4L2_SUBDEV_FORMAT_ACTIVE: 124 return entity->config; 125 case V4L2_SUBDEV_FORMAT_TRY: 126 default: 127 return cfg; 128 } 129} 130 131/** 132 * vsp1_entity_get_pad_format - Get a pad format from storage for an entity 133 * @entity: the entity 134 * @cfg: the configuration storage 135 * @pad: the pad number 136 * 137 * Return the format stored in the given configuration for an entity's pad. The 138 * configuration can be an ACTIVE or TRY configuration. 139 */ 140struct v4l2_mbus_framefmt * 141vsp1_entity_get_pad_format(struct vsp1_entity *entity, 142 struct v4l2_subdev_pad_config *cfg, 143 unsigned int pad) 144{ 145 return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad); 146} 147 148/** 149 * vsp1_entity_get_pad_selection - Get a pad selection from storage for entity 150 * @entity: the entity 151 * @cfg: the configuration storage 152 * @pad: the pad number 153 * @target: the selection target 154 * 155 * Return the selection rectangle stored in the given configuration for an 156 * entity's pad. The configuration can be an ACTIVE or TRY configuration. The 157 * selection target can be COMPOSE or CROP. 158 */ 159struct v4l2_rect * 160vsp1_entity_get_pad_selection(struct vsp1_entity *entity, 161 struct v4l2_subdev_pad_config *cfg, 162 unsigned int pad, unsigned int target) 163{ 164 switch (target) { 165 case V4L2_SEL_TGT_COMPOSE: 166 return v4l2_subdev_get_try_compose(&entity->subdev, cfg, pad); 167 case V4L2_SEL_TGT_CROP: 168 return v4l2_subdev_get_try_crop(&entity->subdev, cfg, pad); 169 default: 170 return NULL; 171 } 172} 173 174/* 175 * vsp1_entity_init_cfg - Initialize formats on all pads 176 * @subdev: V4L2 subdevice 177 * @cfg: V4L2 subdev pad configuration 178 * 179 * Initialize all pad formats with default values in the given pad config. This 180 * function can be used as a handler for the subdev pad::init_cfg operation. 181 */ 182int vsp1_entity_init_cfg(struct v4l2_subdev *subdev, 183 struct v4l2_subdev_pad_config *cfg) 184{ 185 struct v4l2_subdev_format format; 186 unsigned int pad; 187 188 for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) { 189 memset(&format, 0, sizeof(format)); 190 191 format.pad = pad; 192 format.which = cfg ? V4L2_SUBDEV_FORMAT_TRY 193 : V4L2_SUBDEV_FORMAT_ACTIVE; 194 195 v4l2_subdev_call(subdev, pad, set_fmt, cfg, &format); 196 } 197 198 return 0; 199} 200 201/* 202 * vsp1_subdev_get_pad_format - Subdev pad get_fmt handler 203 * @subdev: V4L2 subdevice 204 * @cfg: V4L2 subdev pad configuration 205 * @fmt: V4L2 subdev format 206 * 207 * This function implements the subdev get_fmt pad operation. It can be used as 208 * a direct drop-in for the operation handler. 209 */ 210int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev, 211 struct v4l2_subdev_pad_config *cfg, 212 struct v4l2_subdev_format *fmt) 213{ 214 struct vsp1_entity *entity = to_vsp1_entity(subdev); 215 struct v4l2_subdev_pad_config *config; 216 217 config = vsp1_entity_get_pad_config(entity, cfg, fmt->which); 218 if (!config) 219 return -EINVAL; 220 221 mutex_lock(&entity->lock); 222 fmt->format = *vsp1_entity_get_pad_format(entity, config, fmt->pad); 223 mutex_unlock(&entity->lock); 224 225 return 0; 226} 227 228/* 229 * vsp1_subdev_enum_mbus_code - Subdev pad enum_mbus_code handler 230 * @subdev: V4L2 subdevice 231 * @cfg: V4L2 subdev pad configuration 232 * @code: Media bus code enumeration 233 * @codes: Array of supported media bus codes 234 * @ncodes: Number of supported media bus codes 235 * 236 * This function implements the subdev enum_mbus_code pad operation for entities 237 * that do not support format conversion. It enumerates the given supported 238 * media bus codes on the sink pad and reports a source pad format identical to 239 * the sink pad. 240 */ 241int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev, 242 struct v4l2_subdev_pad_config *cfg, 243 struct v4l2_subdev_mbus_code_enum *code, 244 const unsigned int *codes, unsigned int ncodes) 245{ 246 struct vsp1_entity *entity = to_vsp1_entity(subdev); 247 248 if (code->pad == 0) { 249 if (code->index >= ncodes) 250 return -EINVAL; 251 252 code->code = codes[code->index]; 253 } else { 254 struct v4l2_subdev_pad_config *config; 255 struct v4l2_mbus_framefmt *format; 256 257 /* 258 * The entity can't perform format conversion, the sink format 259 * is always identical to the source format. 260 */ 261 if (code->index) 262 return -EINVAL; 263 264 config = vsp1_entity_get_pad_config(entity, cfg, code->which); 265 if (!config) 266 return -EINVAL; 267 268 mutex_lock(&entity->lock); 269 format = vsp1_entity_get_pad_format(entity, config, 0); 270 code->code = format->code; 271 mutex_unlock(&entity->lock); 272 } 273 274 return 0; 275} 276 277/* 278 * vsp1_subdev_enum_frame_size - Subdev pad enum_frame_size handler 279 * @subdev: V4L2 subdevice 280 * @cfg: V4L2 subdev pad configuration 281 * @fse: Frame size enumeration 282 * @min_width: Minimum image width 283 * @min_height: Minimum image height 284 * @max_width: Maximum image width 285 * @max_height: Maximum image height 286 * 287 * This function implements the subdev enum_frame_size pad operation for 288 * entities that do not support scaling or cropping. It reports the given 289 * minimum and maximum frame width and height on the sink pad, and a fixed 290 * source pad size identical to the sink pad. 291 */ 292int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev, 293 struct v4l2_subdev_pad_config *cfg, 294 struct v4l2_subdev_frame_size_enum *fse, 295 unsigned int min_width, unsigned int min_height, 296 unsigned int max_width, unsigned int max_height) 297{ 298 struct vsp1_entity *entity = to_vsp1_entity(subdev); 299 struct v4l2_subdev_pad_config *config; 300 struct v4l2_mbus_framefmt *format; 301 int ret = 0; 302 303 config = vsp1_entity_get_pad_config(entity, cfg, fse->which); 304 if (!config) 305 return -EINVAL; 306 307 format = vsp1_entity_get_pad_format(entity, config, fse->pad); 308 309 mutex_lock(&entity->lock); 310 311 if (fse->index || fse->code != format->code) { 312 ret = -EINVAL; 313 goto done; 314 } 315 316 if (fse->pad == 0) { 317 fse->min_width = min_width; 318 fse->max_width = max_width; 319 fse->min_height = min_height; 320 fse->max_height = max_height; 321 } else { 322 /* 323 * The size on the source pad are fixed and always identical to 324 * the size on the sink pad. 325 */ 326 fse->min_width = format->width; 327 fse->max_width = format->width; 328 fse->min_height = format->height; 329 fse->max_height = format->height; 330 } 331 332done: 333 mutex_unlock(&entity->lock); 334 return ret; 335} 336 337/* 338 * vsp1_subdev_set_pad_format - Subdev pad set_fmt handler 339 * @subdev: V4L2 subdevice 340 * @cfg: V4L2 subdev pad configuration 341 * @fmt: V4L2 subdev format 342 * @codes: Array of supported media bus codes 343 * @ncodes: Number of supported media bus codes 344 * @min_width: Minimum image width 345 * @min_height: Minimum image height 346 * @max_width: Maximum image width 347 * @max_height: Maximum image height 348 * 349 * This function implements the subdev set_fmt pad operation for entities that 350 * do not support scaling or cropping. It defaults to the first supplied media 351 * bus code if the requested code isn't supported, clamps the size to the 352 * supplied minimum and maximum, and propagates the sink pad format to the 353 * source pad. 354 */ 355int vsp1_subdev_set_pad_format(struct v4l2_subdev *subdev, 356 struct v4l2_subdev_pad_config *cfg, 357 struct v4l2_subdev_format *fmt, 358 const unsigned int *codes, unsigned int ncodes, 359 unsigned int min_width, unsigned int min_height, 360 unsigned int max_width, unsigned int max_height) 361{ 362 struct vsp1_entity *entity = to_vsp1_entity(subdev); 363 struct v4l2_subdev_pad_config *config; 364 struct v4l2_mbus_framefmt *format; 365 struct v4l2_rect *selection; 366 unsigned int i; 367 int ret = 0; 368 369 mutex_lock(&entity->lock); 370 371 config = vsp1_entity_get_pad_config(entity, cfg, fmt->which); 372 if (!config) { 373 ret = -EINVAL; 374 goto done; 375 } 376 377 format = vsp1_entity_get_pad_format(entity, config, fmt->pad); 378 379 if (fmt->pad == entity->source_pad) { 380 /* The output format can't be modified. */ 381 fmt->format = *format; 382 goto done; 383 } 384 385 /* 386 * Default to the first media bus code if the requested format is not 387 * supported. 388 */ 389 for (i = 0; i < ncodes; ++i) { 390 if (fmt->format.code == codes[i]) 391 break; 392 } 393 394 format->code = i < ncodes ? codes[i] : codes[0]; 395 format->width = clamp_t(unsigned int, fmt->format.width, 396 min_width, max_width); 397 format->height = clamp_t(unsigned int, fmt->format.height, 398 min_height, max_height); 399 format->field = V4L2_FIELD_NONE; 400 format->colorspace = V4L2_COLORSPACE_SRGB; 401 402 fmt->format = *format; 403 404 /* Propagate the format to the source pad. */ 405 format = vsp1_entity_get_pad_format(entity, config, entity->source_pad); 406 *format = fmt->format; 407 408 /* Reset the crop and compose rectangles. */ 409 selection = vsp1_entity_get_pad_selection(entity, config, fmt->pad, 410 V4L2_SEL_TGT_CROP); 411 selection->left = 0; 412 selection->top = 0; 413 selection->width = format->width; 414 selection->height = format->height; 415 416 selection = vsp1_entity_get_pad_selection(entity, config, fmt->pad, 417 V4L2_SEL_TGT_COMPOSE); 418 selection->left = 0; 419 selection->top = 0; 420 selection->width = format->width; 421 selection->height = format->height; 422 423done: 424 mutex_unlock(&entity->lock); 425 return ret; 426} 427 428/* ----------------------------------------------------------------------------- 429 * Media Operations 430 */ 431 432static inline struct vsp1_entity * 433media_entity_to_vsp1_entity(struct media_entity *entity) 434{ 435 return container_of(entity, struct vsp1_entity, subdev.entity); 436} 437 438static int vsp1_entity_link_setup_source(const struct media_pad *source_pad, 439 const struct media_pad *sink_pad, 440 u32 flags) 441{ 442 struct vsp1_entity *source; 443 444 source = media_entity_to_vsp1_entity(source_pad->entity); 445 446 if (!source->route) 447 return 0; 448 449 if (flags & MEDIA_LNK_FL_ENABLED) { 450 struct vsp1_entity *sink 451 = media_entity_to_vsp1_entity(sink_pad->entity); 452 453 /* 454 * Fan-out is limited to one for the normal data path plus 455 * optional HGO and HGT. We ignore the HGO and HGT here. 456 */ 457 if (sink->type != VSP1_ENTITY_HGO && 458 sink->type != VSP1_ENTITY_HGT) { 459 if (source->sink) 460 return -EBUSY; 461 source->sink = sink; 462 source->sink_pad = sink_pad->index; 463 } 464 } else { 465 source->sink = NULL; 466 source->sink_pad = 0; 467 } 468 469 return 0; 470} 471 472static int vsp1_entity_link_setup_sink(const struct media_pad *source_pad, 473 const struct media_pad *sink_pad, 474 u32 flags) 475{ 476 struct vsp1_entity *sink; 477 struct vsp1_entity *source; 478 479 sink = media_entity_to_vsp1_entity(sink_pad->entity); 480 source = media_entity_to_vsp1_entity(source_pad->entity); 481 482 if (flags & MEDIA_LNK_FL_ENABLED) { 483 /* Fan-in is limited to one. */ 484 if (sink->sources[sink_pad->index]) 485 return -EBUSY; 486 487 sink->sources[sink_pad->index] = source; 488 } else { 489 sink->sources[sink_pad->index] = NULL; 490 } 491 492 return 0; 493} 494 495int vsp1_entity_link_setup(struct media_entity *entity, 496 const struct media_pad *local, 497 const struct media_pad *remote, u32 flags) 498{ 499 if (local->flags & MEDIA_PAD_FL_SOURCE) 500 return vsp1_entity_link_setup_source(local, remote, flags); 501 else 502 return vsp1_entity_link_setup_sink(remote, local, flags); 503} 504 505/** 506 * vsp1_entity_remote_pad - Find the pad at the remote end of a link 507 * @pad: Pad at the local end of the link 508 * 509 * Search for a remote pad connected to the given pad by iterating over all 510 * links originating or terminating at that pad until an enabled link is found. 511 * 512 * Our link setup implementation guarantees that the output fan-out will not be 513 * higher than one for the data pipelines, except for the links to the HGO and 514 * HGT that can be enabled in addition to a regular data link. When traversing 515 * outgoing links this function ignores HGO and HGT entities and should thus be 516 * used in place of the generic media_entity_remote_pad() function to traverse 517 * data pipelines. 518 * 519 * Return a pointer to the pad at the remote end of the first found enabled 520 * link, or NULL if no enabled link has been found. 521 */ 522struct media_pad *vsp1_entity_remote_pad(struct media_pad *pad) 523{ 524 struct media_link *link; 525 526 list_for_each_entry(link, &pad->entity->links, list) { 527 struct vsp1_entity *entity; 528 529 if (!(link->flags & MEDIA_LNK_FL_ENABLED)) 530 continue; 531 532 /* If we're the sink the source will never be an HGO or HGT. */ 533 if (link->sink == pad) 534 return link->source; 535 536 if (link->source != pad) 537 continue; 538 539 /* If the sink isn't a subdevice it can't be an HGO or HGT. */ 540 if (!is_media_entity_v4l2_subdev(link->sink->entity)) 541 return link->sink; 542 543 entity = media_entity_to_vsp1_entity(link->sink->entity); 544 if (entity->type != VSP1_ENTITY_HGO && 545 entity->type != VSP1_ENTITY_HGT) 546 return link->sink; 547 } 548 549 return NULL; 550 551} 552 553/* ----------------------------------------------------------------------------- 554 * Initialization 555 */ 556 557#define VSP1_ENTITY_ROUTE(ent) \ 558 { VSP1_ENTITY_##ent, 0, VI6_DPR_##ent##_ROUTE, \ 559 { VI6_DPR_NODE_##ent }, VI6_DPR_NODE_##ent } 560 561#define VSP1_ENTITY_ROUTE_RPF(idx) \ 562 { VSP1_ENTITY_RPF, idx, VI6_DPR_RPF_ROUTE(idx), \ 563 { 0, }, VI6_DPR_NODE_RPF(idx) } 564 565#define VSP1_ENTITY_ROUTE_UDS(idx) \ 566 { VSP1_ENTITY_UDS, idx, VI6_DPR_UDS_ROUTE(idx), \ 567 { VI6_DPR_NODE_UDS(idx) }, VI6_DPR_NODE_UDS(idx) } 568 569#define VSP1_ENTITY_ROUTE_UIF(idx) \ 570 { VSP1_ENTITY_UIF, idx, VI6_DPR_UIF_ROUTE(idx), \ 571 { VI6_DPR_NODE_UIF(idx) }, VI6_DPR_NODE_UIF(idx) } 572 573#define VSP1_ENTITY_ROUTE_WPF(idx) \ 574 { VSP1_ENTITY_WPF, idx, 0, \ 575 { VI6_DPR_NODE_WPF(idx) }, VI6_DPR_NODE_WPF(idx) } 576 577static const struct vsp1_route vsp1_routes[] = { 578 { VSP1_ENTITY_BRS, 0, VI6_DPR_ILV_BRS_ROUTE, 579 { VI6_DPR_NODE_BRS_IN(0), VI6_DPR_NODE_BRS_IN(1) }, 0 }, 580 { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE, 581 { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1), 582 VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3), 583 VI6_DPR_NODE_BRU_IN(4) }, VI6_DPR_NODE_BRU_OUT }, 584 VSP1_ENTITY_ROUTE(CLU), 585 { VSP1_ENTITY_HGO, 0, 0, { 0, }, 0 }, 586 { VSP1_ENTITY_HGT, 0, 0, { 0, }, 0 }, 587 VSP1_ENTITY_ROUTE(HSI), 588 VSP1_ENTITY_ROUTE(HST), 589 { VSP1_ENTITY_LIF, 0, 0, { 0, }, 0 }, 590 { VSP1_ENTITY_LIF, 1, 0, { 0, }, 0 }, 591 VSP1_ENTITY_ROUTE(LUT), 592 VSP1_ENTITY_ROUTE_RPF(0), 593 VSP1_ENTITY_ROUTE_RPF(1), 594 VSP1_ENTITY_ROUTE_RPF(2), 595 VSP1_ENTITY_ROUTE_RPF(3), 596 VSP1_ENTITY_ROUTE_RPF(4), 597 VSP1_ENTITY_ROUTE(SRU), 598 VSP1_ENTITY_ROUTE_UDS(0), 599 VSP1_ENTITY_ROUTE_UDS(1), 600 VSP1_ENTITY_ROUTE_UDS(2), 601 VSP1_ENTITY_ROUTE_UIF(0), /* Named UIF4 in the documentation */ 602 VSP1_ENTITY_ROUTE_UIF(1), /* Named UIF5 in the documentation */ 603 VSP1_ENTITY_ROUTE_WPF(0), 604 VSP1_ENTITY_ROUTE_WPF(1), 605 VSP1_ENTITY_ROUTE_WPF(2), 606 VSP1_ENTITY_ROUTE_WPF(3), 607}; 608 609int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, 610 const char *name, unsigned int num_pads, 611 const struct v4l2_subdev_ops *ops, u32 function) 612{ 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 pad configuration to store formats and selection 673 * rectangles. 674 */ 675 entity->config = v4l2_subdev_alloc_pad_config(&entity->subdev); 676 if (entity->config == NULL) { 677 media_entity_cleanup(&entity->subdev.entity); 678 return -ENOMEM; 679 } 680 681 return 0; 682} 683 684void vsp1_entity_destroy(struct vsp1_entity *entity) 685{ 686 if (entity->ops && entity->ops->destroy) 687 entity->ops->destroy(entity); 688 if (entity->subdev.ctrl_handler) 689 v4l2_ctrl_handler_free(entity->subdev.ctrl_handler); 690 v4l2_subdev_free_pad_config(entity->config); 691 media_entity_cleanup(&entity->subdev.entity); 692} 693