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_pad_config - Get the pad configuration for an entity 105 * @entity: the entity 106 * @sd_state: the TRY state 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 */ 117 struct v4l2_subdev_state * 118 vsp1_entity_get_pad_config(struct vsp1_entity *entity, 119 struct v4l2_subdev_state *sd_state, 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 sd_state; 128 } 129 } 130 131 /** 132 * vsp1_entity_get_pad_format - Get a pad format from storage for an entity 133 * @entity: the entity 134 * @sd_state: the state 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 */ 140 struct v4l2_mbus_framefmt * 141 vsp1_entity_get_pad_format(struct vsp1_entity *entity, 142 struct v4l2_subdev_state *sd_state, 143 unsigned int pad) 144 { 145 return v4l2_subdev_get_try_format(&entity->subdev, sd_state, pad); 146 } 147 148 /** 149 * vsp1_entity_get_pad_selection - Get a pad selection from storage for entity 150 * @entity: the entity 151 * @sd_state: the state 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 */ 159 struct v4l2_rect * 160 vsp1_entity_get_pad_selection(struct vsp1_entity *entity, 161 struct v4l2_subdev_state *sd_state, 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, sd_state, 167 pad); 168 case V4L2_SEL_TGT_CROP: 169 return v4l2_subdev_get_try_crop(&entity->subdev, sd_state, 170 pad); 171 default: 172 return NULL; 173 } 174 } 175 176 /* 177 * vsp1_entity_init_cfg - Initialize formats on all pads 178 * @subdev: V4L2 subdevice 179 * @cfg: V4L2 subdev pad configuration 180 * 181 * Initialize all pad formats with default values in the given pad config. This 182 * function can be used as a handler for the subdev pad::init_cfg operation. 183 */ 184 int vsp1_entity_init_cfg(struct v4l2_subdev *subdev, 185 struct v4l2_subdev_state *sd_state) 186 { 187 struct v4l2_subdev_format format; 188 unsigned int pad; 189 190 for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) { 191 memset(&format, 0, sizeof(format)); 192 193 format.pad = pad; 194 format.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY 195 : V4L2_SUBDEV_FORMAT_ACTIVE; 196 197 v4l2_subdev_call(subdev, pad, set_fmt, sd_state, &format); 198 } 199 200 return 0; 201 } 202 203 /* 204 * vsp1_subdev_get_pad_format - Subdev pad get_fmt handler 205 * @subdev: V4L2 subdevice 206 * @cfg: V4L2 subdev pad configuration 207 * @fmt: V4L2 subdev format 208 * 209 * This function implements the subdev get_fmt pad operation. It can be used as 210 * a direct drop-in for the operation handler. 211 */ 212 int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev, 213 struct v4l2_subdev_state *sd_state, 214 struct v4l2_subdev_format *fmt) 215 { 216 struct vsp1_entity *entity = to_vsp1_entity(subdev); 217 struct v4l2_subdev_state *config; 218 219 config = vsp1_entity_get_pad_config(entity, sd_state, fmt->which); 220 if (!config) 221 return -EINVAL; 222 223 mutex_lock(&entity->lock); 224 fmt->format = *vsp1_entity_get_pad_format(entity, config, fmt->pad); 225 mutex_unlock(&entity->lock); 226 227 return 0; 228 } 229 230 /* 231 * vsp1_subdev_enum_mbus_code - Subdev pad enum_mbus_code handler 232 * @subdev: V4L2 subdevice 233 * @cfg: V4L2 subdev pad configuration 234 * @code: Media bus code enumeration 235 * @codes: Array of supported media bus codes 236 * @ncodes: Number of supported media bus codes 237 * 238 * This function implements the subdev enum_mbus_code pad operation for entities 239 * that do not support format conversion. It enumerates the given supported 240 * media bus codes on the sink pad and reports a source pad format identical to 241 * the sink pad. 242 */ 243 int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev, 244 struct v4l2_subdev_state *sd_state, 245 struct v4l2_subdev_mbus_code_enum *code, 246 const unsigned int *codes, unsigned int ncodes) 247 { 248 struct vsp1_entity *entity = to_vsp1_entity(subdev); 249 250 if (code->pad == 0) { 251 if (code->index >= ncodes) 252 return -EINVAL; 253 254 code->code = codes[code->index]; 255 } else { 256 struct v4l2_subdev_state *config; 257 struct v4l2_mbus_framefmt *format; 258 259 /* 260 * The entity can't perform format conversion, the sink format 261 * is always identical to the source format. 262 */ 263 if (code->index) 264 return -EINVAL; 265 266 config = vsp1_entity_get_pad_config(entity, sd_state, 267 code->which); 268 if (!config) 269 return -EINVAL; 270 271 mutex_lock(&entity->lock); 272 format = vsp1_entity_get_pad_format(entity, config, 0); 273 code->code = format->code; 274 mutex_unlock(&entity->lock); 275 } 276 277 return 0; 278 } 279 280 /* 281 * vsp1_subdev_enum_frame_size - Subdev pad enum_frame_size handler 282 * @subdev: V4L2 subdevice 283 * @cfg: V4L2 subdev pad configuration 284 * @fse: Frame size enumeration 285 * @min_width: Minimum image width 286 * @min_height: Minimum image height 287 * @max_width: Maximum image width 288 * @max_height: Maximum image height 289 * 290 * This function implements the subdev enum_frame_size pad operation for 291 * entities that do not support scaling or cropping. It reports the given 292 * minimum and maximum frame width and height on the sink pad, and a fixed 293 * source pad size identical to the sink pad. 294 */ 295 int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev, 296 struct v4l2_subdev_state *sd_state, 297 struct v4l2_subdev_frame_size_enum *fse, 298 unsigned int min_width, unsigned int min_height, 299 unsigned int max_width, unsigned int max_height) 300 { 301 struct vsp1_entity *entity = to_vsp1_entity(subdev); 302 struct v4l2_subdev_state *config; 303 struct v4l2_mbus_framefmt *format; 304 int ret = 0; 305 306 config = vsp1_entity_get_pad_config(entity, sd_state, fse->which); 307 if (!config) 308 return -EINVAL; 309 310 format = vsp1_entity_get_pad_format(entity, config, fse->pad); 311 312 mutex_lock(&entity->lock); 313 314 if (fse->index || fse->code != format->code) { 315 ret = -EINVAL; 316 goto done; 317 } 318 319 if (fse->pad == 0) { 320 fse->min_width = min_width; 321 fse->max_width = max_width; 322 fse->min_height = min_height; 323 fse->max_height = max_height; 324 } else { 325 /* 326 * The size on the source pad are fixed and always identical to 327 * the size on the sink pad. 328 */ 329 fse->min_width = format->width; 330 fse->max_width = format->width; 331 fse->min_height = format->height; 332 fse->max_height = format->height; 333 } 334 335 done: 336 mutex_unlock(&entity->lock); 337 return ret; 338 } 339 340 /* 341 * vsp1_subdev_set_pad_format - Subdev pad set_fmt handler 342 * @subdev: V4L2 subdevice 343 * @cfg: V4L2 subdev pad configuration 344 * @fmt: V4L2 subdev format 345 * @codes: Array of supported media bus codes 346 * @ncodes: Number of supported media bus codes 347 * @min_width: Minimum image width 348 * @min_height: Minimum image height 349 * @max_width: Maximum image width 350 * @max_height: Maximum image height 351 * 352 * This function implements the subdev set_fmt pad operation for entities that 353 * do not support scaling or cropping. It defaults to the first supplied media 354 * bus code if the requested code isn't supported, clamps the size to the 355 * supplied minimum and maximum, and propagates the sink pad format to the 356 * source pad. 357 */ 358 int vsp1_subdev_set_pad_format(struct v4l2_subdev *subdev, 359 struct v4l2_subdev_state *sd_state, 360 struct v4l2_subdev_format *fmt, 361 const unsigned int *codes, unsigned int ncodes, 362 unsigned int min_width, unsigned int min_height, 363 unsigned int max_width, unsigned int max_height) 364 { 365 struct vsp1_entity *entity = to_vsp1_entity(subdev); 366 struct v4l2_subdev_state *config; 367 struct v4l2_mbus_framefmt *format; 368 struct v4l2_rect *selection; 369 unsigned int i; 370 int ret = 0; 371 372 mutex_lock(&entity->lock); 373 374 config = vsp1_entity_get_pad_config(entity, sd_state, fmt->which); 375 if (!config) { 376 ret = -EINVAL; 377 goto done; 378 } 379 380 format = vsp1_entity_get_pad_format(entity, config, fmt->pad); 381 382 if (fmt->pad == entity->source_pad) { 383 /* The output format can't be modified. */ 384 fmt->format = *format; 385 goto done; 386 } 387 388 /* 389 * Default to the first media bus code if the requested format is not 390 * supported. 391 */ 392 for (i = 0; i < ncodes; ++i) { 393 if (fmt->format.code == codes[i]) 394 break; 395 } 396 397 format->code = i < ncodes ? codes[i] : codes[0]; 398 format->width = clamp_t(unsigned int, fmt->format.width, 399 min_width, max_width); 400 format->height = clamp_t(unsigned int, fmt->format.height, 401 min_height, max_height); 402 format->field = V4L2_FIELD_NONE; 403 format->colorspace = V4L2_COLORSPACE_SRGB; 404 405 fmt->format = *format; 406 407 /* Propagate the format to the source pad. */ 408 format = vsp1_entity_get_pad_format(entity, config, entity->source_pad); 409 *format = fmt->format; 410 411 /* Reset the crop and compose rectangles. */ 412 selection = vsp1_entity_get_pad_selection(entity, config, fmt->pad, 413 V4L2_SEL_TGT_CROP); 414 selection->left = 0; 415 selection->top = 0; 416 selection->width = format->width; 417 selection->height = format->height; 418 419 selection = vsp1_entity_get_pad_selection(entity, config, fmt->pad, 420 V4L2_SEL_TGT_COMPOSE); 421 selection->left = 0; 422 selection->top = 0; 423 selection->width = format->width; 424 selection->height = format->height; 425 426 done: 427 mutex_unlock(&entity->lock); 428 return ret; 429 } 430 431 /* ----------------------------------------------------------------------------- 432 * Media Operations 433 */ 434 435 static inline struct vsp1_entity * 436 media_entity_to_vsp1_entity(struct media_entity *entity) 437 { 438 return container_of(entity, struct vsp1_entity, subdev.entity); 439 } 440 441 static int vsp1_entity_link_setup_source(const struct media_pad *source_pad, 442 const struct media_pad *sink_pad, 443 u32 flags) 444 { 445 struct vsp1_entity *source; 446 447 source = media_entity_to_vsp1_entity(source_pad->entity); 448 449 if (!source->route) 450 return 0; 451 452 if (flags & MEDIA_LNK_FL_ENABLED) { 453 struct vsp1_entity *sink 454 = media_entity_to_vsp1_entity(sink_pad->entity); 455 456 /* 457 * Fan-out is limited to one for the normal data path plus 458 * optional HGO and HGT. We ignore the HGO and HGT here. 459 */ 460 if (sink->type != VSP1_ENTITY_HGO && 461 sink->type != VSP1_ENTITY_HGT) { 462 if (source->sink) 463 return -EBUSY; 464 source->sink = sink; 465 source->sink_pad = sink_pad->index; 466 } 467 } else { 468 source->sink = NULL; 469 source->sink_pad = 0; 470 } 471 472 return 0; 473 } 474 475 static int vsp1_entity_link_setup_sink(const struct media_pad *source_pad, 476 const struct media_pad *sink_pad, 477 u32 flags) 478 { 479 struct vsp1_entity *sink; 480 struct vsp1_entity *source; 481 482 sink = media_entity_to_vsp1_entity(sink_pad->entity); 483 source = media_entity_to_vsp1_entity(source_pad->entity); 484 485 if (flags & MEDIA_LNK_FL_ENABLED) { 486 /* Fan-in is limited to one. */ 487 if (sink->sources[sink_pad->index]) 488 return -EBUSY; 489 490 sink->sources[sink_pad->index] = source; 491 } else { 492 sink->sources[sink_pad->index] = NULL; 493 } 494 495 return 0; 496 } 497 498 int vsp1_entity_link_setup(struct media_entity *entity, 499 const struct media_pad *local, 500 const struct media_pad *remote, u32 flags) 501 { 502 if (local->flags & MEDIA_PAD_FL_SOURCE) 503 return vsp1_entity_link_setup_source(local, remote, flags); 504 else 505 return vsp1_entity_link_setup_sink(remote, local, flags); 506 } 507 508 /** 509 * vsp1_entity_remote_pad - Find the pad at the remote end of a link 510 * @pad: Pad at the local end of the link 511 * 512 * Search for a remote pad connected to the given pad by iterating over all 513 * links originating or terminating at that pad until an enabled link is found. 514 * 515 * Our link setup implementation guarantees that the output fan-out will not be 516 * higher than one for the data pipelines, except for the links to the HGO and 517 * HGT that can be enabled in addition to a regular data link. When traversing 518 * outgoing links this function ignores HGO and HGT entities and should thus be 519 * used in place of the generic media_entity_remote_pad() function to traverse 520 * data pipelines. 521 * 522 * Return a pointer to the pad at the remote end of the first found enabled 523 * link, or NULL if no enabled link has been found. 524 */ 525 struct media_pad *vsp1_entity_remote_pad(struct media_pad *pad) 526 { 527 struct media_link *link; 528 529 list_for_each_entry(link, &pad->entity->links, list) { 530 struct vsp1_entity *entity; 531 532 if (!(link->flags & MEDIA_LNK_FL_ENABLED)) 533 continue; 534 535 /* If we're the sink the source will never be an HGO or HGT. */ 536 if (link->sink == pad) 537 return link->source; 538 539 if (link->source != pad) 540 continue; 541 542 /* If the sink isn't a subdevice it can't be an HGO or HGT. */ 543 if (!is_media_entity_v4l2_subdev(link->sink->entity)) 544 return link->sink; 545 546 entity = media_entity_to_vsp1_entity(link->sink->entity); 547 if (entity->type != VSP1_ENTITY_HGO && 548 entity->type != VSP1_ENTITY_HGT) 549 return link->sink; 550 } 551 552 return NULL; 553 554 } 555 556 /* ----------------------------------------------------------------------------- 557 * Initialization 558 */ 559 560 #define VSP1_ENTITY_ROUTE(ent) \ 561 { VSP1_ENTITY_##ent, 0, VI6_DPR_##ent##_ROUTE, \ 562 { VI6_DPR_NODE_##ent }, VI6_DPR_NODE_##ent } 563 564 #define VSP1_ENTITY_ROUTE_RPF(idx) \ 565 { VSP1_ENTITY_RPF, idx, VI6_DPR_RPF_ROUTE(idx), \ 566 { 0, }, VI6_DPR_NODE_RPF(idx) } 567 568 #define VSP1_ENTITY_ROUTE_UDS(idx) \ 569 { VSP1_ENTITY_UDS, idx, VI6_DPR_UDS_ROUTE(idx), \ 570 { VI6_DPR_NODE_UDS(idx) }, VI6_DPR_NODE_UDS(idx) } 571 572 #define VSP1_ENTITY_ROUTE_UIF(idx) \ 573 { VSP1_ENTITY_UIF, idx, VI6_DPR_UIF_ROUTE(idx), \ 574 { VI6_DPR_NODE_UIF(idx) }, VI6_DPR_NODE_UIF(idx) } 575 576 #define VSP1_ENTITY_ROUTE_WPF(idx) \ 577 { VSP1_ENTITY_WPF, idx, 0, \ 578 { VI6_DPR_NODE_WPF(idx) }, VI6_DPR_NODE_WPF(idx) } 579 580 static const struct vsp1_route vsp1_routes[] = { 581 { VSP1_ENTITY_BRS, 0, VI6_DPR_ILV_BRS_ROUTE, 582 { VI6_DPR_NODE_BRS_IN(0), VI6_DPR_NODE_BRS_IN(1) }, 0 }, 583 { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE, 584 { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1), 585 VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3), 586 VI6_DPR_NODE_BRU_IN(4) }, VI6_DPR_NODE_BRU_OUT }, 587 VSP1_ENTITY_ROUTE(CLU), 588 { VSP1_ENTITY_HGO, 0, 0, { 0, }, 0 }, 589 { VSP1_ENTITY_HGT, 0, 0, { 0, }, 0 }, 590 VSP1_ENTITY_ROUTE(HSI), 591 VSP1_ENTITY_ROUTE(HST), 592 { VSP1_ENTITY_LIF, 0, 0, { 0, }, 0 }, 593 { VSP1_ENTITY_LIF, 1, 0, { 0, }, 0 }, 594 VSP1_ENTITY_ROUTE(LUT), 595 VSP1_ENTITY_ROUTE_RPF(0), 596 VSP1_ENTITY_ROUTE_RPF(1), 597 VSP1_ENTITY_ROUTE_RPF(2), 598 VSP1_ENTITY_ROUTE_RPF(3), 599 VSP1_ENTITY_ROUTE_RPF(4), 600 VSP1_ENTITY_ROUTE(SRU), 601 VSP1_ENTITY_ROUTE_UDS(0), 602 VSP1_ENTITY_ROUTE_UDS(1), 603 VSP1_ENTITY_ROUTE_UDS(2), 604 VSP1_ENTITY_ROUTE_UIF(0), /* Named UIF4 in the documentation */ 605 VSP1_ENTITY_ROUTE_UIF(1), /* Named UIF5 in the documentation */ 606 VSP1_ENTITY_ROUTE_WPF(0), 607 VSP1_ENTITY_ROUTE_WPF(1), 608 VSP1_ENTITY_ROUTE_WPF(2), 609 VSP1_ENTITY_ROUTE_WPF(3), 610 }; 611 612 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, 613 const char *name, unsigned int num_pads, 614 const struct v4l2_subdev_ops *ops, u32 function) 615 { 616 static struct lock_class_key key; 617 struct v4l2_subdev *subdev; 618 unsigned int i; 619 int ret; 620 621 for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) { 622 if (vsp1_routes[i].type == entity->type && 623 vsp1_routes[i].index == entity->index) { 624 entity->route = &vsp1_routes[i]; 625 break; 626 } 627 } 628 629 if (i == ARRAY_SIZE(vsp1_routes)) 630 return -EINVAL; 631 632 mutex_init(&entity->lock); 633 634 entity->vsp1 = vsp1; 635 entity->source_pad = num_pads - 1; 636 637 /* Allocate and initialize pads. */ 638 entity->pads = devm_kcalloc(vsp1->dev, 639 num_pads, sizeof(*entity->pads), 640 GFP_KERNEL); 641 if (entity->pads == NULL) 642 return -ENOMEM; 643 644 for (i = 0; i < num_pads - 1; ++i) 645 entity->pads[i].flags = MEDIA_PAD_FL_SINK; 646 647 entity->sources = devm_kcalloc(vsp1->dev, max(num_pads - 1, 1U), 648 sizeof(*entity->sources), GFP_KERNEL); 649 if (entity->sources == NULL) 650 return -ENOMEM; 651 652 /* Single-pad entities only have a sink. */ 653 entity->pads[num_pads - 1].flags = num_pads > 1 ? MEDIA_PAD_FL_SOURCE 654 : MEDIA_PAD_FL_SINK; 655 656 /* Initialize the media entity. */ 657 ret = media_entity_pads_init(&entity->subdev.entity, num_pads, 658 entity->pads); 659 if (ret < 0) 660 return ret; 661 662 /* Initialize the V4L2 subdev. */ 663 subdev = &entity->subdev; 664 v4l2_subdev_init(subdev, ops); 665 666 subdev->entity.function = function; 667 subdev->entity.ops = &vsp1->media_ops; 668 subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 669 670 snprintf(subdev->name, sizeof(subdev->name), "%s %s", 671 dev_name(vsp1->dev), name); 672 673 vsp1_entity_init_cfg(subdev, NULL); 674 675 /* 676 * Allocate the pad configuration to store formats and selection 677 * rectangles. 678 */ 679 /* 680 * FIXME: Drop this call, drivers are not supposed to use 681 * __v4l2_subdev_state_alloc(). 682 */ 683 entity->config = __v4l2_subdev_state_alloc(&entity->subdev, 684 "vsp1:config->lock", &key); 685 if (IS_ERR(entity->config)) { 686 media_entity_cleanup(&entity->subdev.entity); 687 return PTR_ERR(entity->config); 688 } 689 690 return 0; 691 } 692 693 void vsp1_entity_destroy(struct vsp1_entity *entity) 694 { 695 if (entity->ops && entity->ops->destroy) 696 entity->ops->destroy(entity); 697 if (entity->subdev.ctrl_handler) 698 v4l2_ctrl_handler_free(entity->subdev.ctrl_handler); 699 __v4l2_subdev_state_free(entity->config); 700 media_entity_cleanup(&entity->subdev.entity); 701 } 702