drivers/media/platform/renesas/vsp1/vsp1_drv.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * vsp1_drv.c  --  R-Car VSP1 Driver
   4  *
   5  * Copyright (C) 2013-2015 Renesas Electronics Corporation
   6  *
   7  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/delay.h>
  12 #include <linux/device.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/of.h>
  16 #include <linux/of_device.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/pm_runtime.h>
  19 #include <linux/videodev2.h>
  20
  21 #include <media/rcar-fcp.h>
  22 #include <media/v4l2-subdev.h>
  23
  24 #include "vsp1.h"
  25 #include "vsp1_brx.h"
  26 #include "vsp1_clu.h"
  27 #include "vsp1_dl.h"
  28 #include "vsp1_drm.h"
  29 #include "vsp1_hgo.h"
  30 #include "vsp1_hgt.h"
  31 #include "vsp1_hsit.h"
  32 #include "vsp1_lif.h"
  33 #include "vsp1_lut.h"
  34 #include "vsp1_pipe.h"
  35 #include "vsp1_rwpf.h"
  36 #include "vsp1_sru.h"
  37 #include "vsp1_uds.h"
  38 #include "vsp1_uif.h"
  39 #include "vsp1_video.h"
  40
  41 /* -----------------------------------------------------------------------------
  42  * Interrupt Handling
  43  */
  44
  45 static irqreturn_t vsp1_irq_handler(int irq, void *data)
  46 {
  47         u32 mask = VI6_WPF_IRQ_STA_DFE | VI6_WPF_IRQ_STA_FRE;
  48         struct vsp1_device *vsp1 = data;
  49         irqreturn_t ret = IRQ_NONE;
  50         unsigned int i;
  51         u32 status;
  52
  53         for (i = 0; i < vsp1->info->wpf_count; ++i) {
  54                 struct vsp1_rwpf *wpf = vsp1->wpf[i];
  55
  56                 if (wpf == NULL)
  57                         continue;
  58
  59                 status = vsp1_read(vsp1, VI6_WPF_IRQ_STA(i));
  60                 vsp1_write(vsp1, VI6_WPF_IRQ_STA(i), ~status & mask);
  61
  62                 if (status & VI6_WPF_IRQ_STA_DFE) {
  63                         vsp1_pipeline_frame_end(wpf->entity.pipe);
  64                         ret = IRQ_HANDLED;
  65                 }
  66         }
  67
  68         return ret;
  69 }
  70
  71 /* -----------------------------------------------------------------------------
  72  * Entities
  73  */
  74
  75 /*
  76  * vsp1_create_sink_links - Create links from all sources to the given sink
  77  *
  78  * This function creates media links from all valid sources to the given sink
  79  * pad. Links that would be invalid according to the VSP1 hardware capabilities
  80  * are skipped. Those include all links
  81  *
  82  * - from a UDS to a UDS (UDS entities can't be chained)
  83  * - from an entity to itself (no loops are allowed)
  84  *
  85  * Furthermore, the BRS can't be connected to histogram generators, but no
  86  * special check is currently needed as all VSP instances that include a BRS
  87  * have no histogram generator.
  88  */
  89 static int vsp1_create_sink_links(struct vsp1_device *vsp1,
  90                                   struct vsp1_entity *sink)
  91 {
  92         struct media_entity *entity = &sink->subdev.entity;
  93         struct vsp1_entity *source;
  94         unsigned int pad;
  95         int ret;
  96
  97         list_for_each_entry(source, &vsp1->entities, list_dev) {
  98                 u32 flags;
  99
 100                 if (source->type == sink->type)
 101                         continue;
 102
 103                 if (source->type == VSP1_ENTITY_HGO ||
 104                     source->type == VSP1_ENTITY_HGT ||
 105                     source->type == VSP1_ENTITY_LIF ||
 106                     source->type == VSP1_ENTITY_WPF)
 107                         continue;
 108
 109                 flags = source->type == VSP1_ENTITY_RPF &&
 110                         sink->type == VSP1_ENTITY_WPF &&
 111                         source->index == sink->index
 112                       ? MEDIA_LNK_FL_ENABLED : 0;
 113
 114                 for (pad = 0; pad < entity->num_pads; ++pad) {
 115                         if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK))
 116                                 continue;
 117
 118                         ret = media_create_pad_link(&source->subdev.entity,
 119                                                        source->source_pad,
 120                                                        entity, pad, flags);
 121                         if (ret < 0)
 122                                 return ret;
 123
 124                         if (flags & MEDIA_LNK_FL_ENABLED)
 125                                 source->sink = sink;
 126                 }
 127         }
 128
 129         return 0;
 130 }
 131
 132 static int vsp1_uapi_create_links(struct vsp1_device *vsp1)
 133 {
 134         struct vsp1_entity *entity;
 135         unsigned int i;
 136         int ret;
 137
 138         list_for_each_entry(entity, &vsp1->entities, list_dev) {
 139                 if (entity->type == VSP1_ENTITY_LIF ||
 140                     entity->type == VSP1_ENTITY_RPF)
 141                         continue;
 142
 143                 ret = vsp1_create_sink_links(vsp1, entity);
 144                 if (ret < 0)
 145                         return ret;
 146         }
 147
 148         if (vsp1->hgo) {
 149                 ret = media_create_pad_link(&vsp1->hgo->histo.entity.subdev.entity,
 150                                             HISTO_PAD_SOURCE,
 151                                             &vsp1->hgo->histo.video.entity, 0,
 152                                             MEDIA_LNK_FL_ENABLED |
 153                                             MEDIA_LNK_FL_IMMUTABLE);
 154                 if (ret < 0)
 155                         return ret;
 156         }
 157
 158         if (vsp1->hgt) {
 159                 ret = media_create_pad_link(&vsp1->hgt->histo.entity.subdev.entity,
 160                                             HISTO_PAD_SOURCE,
 161                                             &vsp1->hgt->histo.video.entity, 0,
 162                                             MEDIA_LNK_FL_ENABLED |
 163                                             MEDIA_LNK_FL_IMMUTABLE);
 164                 if (ret < 0)
 165                         return ret;
 166         }
 167
 168         for (i = 0; i < vsp1->info->lif_count; ++i) {
 169                 if (!vsp1->lif[i])
 170                         continue;
 171
 172                 ret = media_create_pad_link(&vsp1->wpf[i]->entity.subdev.entity,
 173                                             RWPF_PAD_SOURCE,
 174                                             &vsp1->lif[i]->entity.subdev.entity,
 175                                             LIF_PAD_SINK, 0);
 176                 if (ret < 0)
 177                         return ret;
 178         }
 179
 180         for (i = 0; i < vsp1->info->rpf_count; ++i) {
 181                 struct vsp1_rwpf *rpf = vsp1->rpf[i];
 182
 183                 ret = media_create_pad_link(&rpf->video->video.entity, 0,
 184                                             &rpf->entity.subdev.entity,
 185                                             RWPF_PAD_SINK,
 186                                             MEDIA_LNK_FL_ENABLED |
 187                                             MEDIA_LNK_FL_IMMUTABLE);
 188                 if (ret < 0)
 189                         return ret;
 190         }
 191
 192         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 193                 /*
 194                  * Connect the video device to the WPF. All connections are
 195                  * immutable.
 196                  */
 197                 struct vsp1_rwpf *wpf = vsp1->wpf[i];
 198
 199                 ret = media_create_pad_link(&wpf->entity.subdev.entity,
 200                                             RWPF_PAD_SOURCE,
 201                                             &wpf->video->video.entity, 0,
 202                                             MEDIA_LNK_FL_IMMUTABLE |
 203                                             MEDIA_LNK_FL_ENABLED);
 204                 if (ret < 0)
 205                         return ret;
 206         }
 207
 208         return 0;
 209 }
 210
 211 static void vsp1_destroy_entities(struct vsp1_device *vsp1)
 212 {
 213         struct vsp1_entity *entity, *_entity;
 214         struct vsp1_video *video, *_video;
 215
 216         list_for_each_entry_safe(entity, _entity, &vsp1->entities, list_dev) {
 217                 list_del(&entity->list_dev);
 218                 vsp1_entity_destroy(entity);
 219         }
 220
 221         list_for_each_entry_safe(video, _video, &vsp1->videos, list) {
 222                 list_del(&video->list);
 223                 vsp1_video_cleanup(video);
 224         }
 225
 226         v4l2_device_unregister(&vsp1->v4l2_dev);
 227         if (vsp1->info->uapi)
 228                 media_device_unregister(&vsp1->media_dev);
 229         media_device_cleanup(&vsp1->media_dev);
 230
 231         if (!vsp1->info->uapi)
 232                 vsp1_drm_cleanup(vsp1);
 233 }
 234
 235 static int vsp1_create_entities(struct vsp1_device *vsp1)
 236 {
 237         struct media_device *mdev = &vsp1->media_dev;
 238         struct v4l2_device *vdev = &vsp1->v4l2_dev;
 239         struct vsp1_entity *entity;
 240         unsigned int i;
 241         int ret;
 242
 243         mdev->dev = vsp1->dev;
 244         mdev->hw_revision = vsp1->version;
 245         strscpy(mdev->model, vsp1->info->model, sizeof(mdev->model));
 246         media_device_init(mdev);
 247
 248         vsp1->media_ops.link_setup = vsp1_entity_link_setup;
 249         /*
 250          * Don't perform link validation when the userspace API is disabled as
 251          * the pipeline is configured internally by the driver in that case, and
 252          * its configuration can thus be trusted.
 253          */
 254         if (vsp1->info->uapi)
 255                 vsp1->media_ops.link_validate = v4l2_subdev_link_validate;
 256
 257         vdev->mdev = mdev;
 258         ret = v4l2_device_register(vsp1->dev, vdev);
 259         if (ret < 0) {
 260                 dev_err(vsp1->dev, "V4L2 device registration failed (%d)\n",
 261                         ret);
 262                 goto done;
 263         }
 264
 265         /* Instantiate all the entities. */
 266         if (vsp1_feature(vsp1, VSP1_HAS_BRS)) {
 267                 vsp1->brs = vsp1_brx_create(vsp1, VSP1_ENTITY_BRS);
 268                 if (IS_ERR(vsp1->brs)) {
 269                         ret = PTR_ERR(vsp1->brs);
 270                         goto done;
 271                 }
 272
 273                 list_add_tail(&vsp1->brs->entity.list_dev, &vsp1->entities);
 274         }
 275
 276         if (vsp1_feature(vsp1, VSP1_HAS_BRU)) {
 277                 vsp1->bru = vsp1_brx_create(vsp1, VSP1_ENTITY_BRU);
 278                 if (IS_ERR(vsp1->bru)) {
 279                         ret = PTR_ERR(vsp1->bru);
 280                         goto done;
 281                 }
 282
 283                 list_add_tail(&vsp1->bru->entity.list_dev, &vsp1->entities);
 284         }
 285
 286         if (vsp1_feature(vsp1, VSP1_HAS_CLU)) {
 287                 vsp1->clu = vsp1_clu_create(vsp1);
 288                 if (IS_ERR(vsp1->clu)) {
 289                         ret = PTR_ERR(vsp1->clu);
 290                         goto done;
 291                 }
 292
 293                 list_add_tail(&vsp1->clu->entity.list_dev, &vsp1->entities);
 294         }
 295
 296         vsp1->hsi = vsp1_hsit_create(vsp1, true);
 297         if (IS_ERR(vsp1->hsi)) {
 298                 ret = PTR_ERR(vsp1->hsi);
 299                 goto done;
 300         }
 301
 302         list_add_tail(&vsp1->hsi->entity.list_dev, &vsp1->entities);
 303
 304         vsp1->hst = vsp1_hsit_create(vsp1, false);
 305         if (IS_ERR(vsp1->hst)) {
 306                 ret = PTR_ERR(vsp1->hst);
 307                 goto done;
 308         }
 309
 310         list_add_tail(&vsp1->hst->entity.list_dev, &vsp1->entities);
 311
 312         if (vsp1_feature(vsp1, VSP1_HAS_HGO) && vsp1->info->uapi) {
 313                 vsp1->hgo = vsp1_hgo_create(vsp1);
 314                 if (IS_ERR(vsp1->hgo)) {
 315                         ret = PTR_ERR(vsp1->hgo);
 316                         goto done;
 317                 }
 318
 319                 list_add_tail(&vsp1->hgo->histo.entity.list_dev,
 320                               &vsp1->entities);
 321         }
 322
 323         if (vsp1_feature(vsp1, VSP1_HAS_HGT) && vsp1->info->uapi) {
 324                 vsp1->hgt = vsp1_hgt_create(vsp1);
 325                 if (IS_ERR(vsp1->hgt)) {
 326                         ret = PTR_ERR(vsp1->hgt);
 327                         goto done;
 328                 }
 329
 330                 list_add_tail(&vsp1->hgt->histo.entity.list_dev,
 331                               &vsp1->entities);
 332         }
 333
 334         /*
 335          * The LIFs are only supported when used in conjunction with the DU, in
 336          * which case the userspace API is disabled. If the userspace API is
 337          * enabled skip the LIFs, even when present.
 338          */
 339         if (!vsp1->info->uapi) {
 340                 for (i = 0; i < vsp1->info->lif_count; ++i) {
 341                         struct vsp1_lif *lif;
 342
 343                         lif = vsp1_lif_create(vsp1, i);
 344                         if (IS_ERR(lif)) {
 345                                 ret = PTR_ERR(lif);
 346                                 goto done;
 347                         }
 348
 349                         vsp1->lif[i] = lif;
 350                         list_add_tail(&lif->entity.list_dev, &vsp1->entities);
 351                 }
 352         }
 353
 354         if (vsp1_feature(vsp1, VSP1_HAS_LUT)) {
 355                 vsp1->lut = vsp1_lut_create(vsp1);
 356                 if (IS_ERR(vsp1->lut)) {
 357                         ret = PTR_ERR(vsp1->lut);
 358                         goto done;
 359                 }
 360
 361                 list_add_tail(&vsp1->lut->entity.list_dev, &vsp1->entities);
 362         }
 363
 364         for (i = 0; i < vsp1->info->rpf_count; ++i) {
 365                 struct vsp1_rwpf *rpf;
 366
 367                 rpf = vsp1_rpf_create(vsp1, i);
 368                 if (IS_ERR(rpf)) {
 369                         ret = PTR_ERR(rpf);
 370                         goto done;
 371                 }
 372
 373                 vsp1->rpf[i] = rpf;
 374                 list_add_tail(&rpf->entity.list_dev, &vsp1->entities);
 375
 376                 if (vsp1->info->uapi) {
 377                         struct vsp1_video *video = vsp1_video_create(vsp1, rpf);
 378
 379                         if (IS_ERR(video)) {
 380                                 ret = PTR_ERR(video);
 381                                 goto done;
 382                         }
 383
 384                         list_add_tail(&video->list, &vsp1->videos);
 385                 }
 386         }
 387
 388         if (vsp1_feature(vsp1, VSP1_HAS_SRU)) {
 389                 vsp1->sru = vsp1_sru_create(vsp1);
 390                 if (IS_ERR(vsp1->sru)) {
 391                         ret = PTR_ERR(vsp1->sru);
 392                         goto done;
 393                 }
 394
 395                 list_add_tail(&vsp1->sru->entity.list_dev, &vsp1->entities);
 396         }
 397
 398         for (i = 0; i < vsp1->info->uds_count; ++i) {
 399                 struct vsp1_uds *uds;
 400
 401                 uds = vsp1_uds_create(vsp1, i);
 402                 if (IS_ERR(uds)) {
 403                         ret = PTR_ERR(uds);
 404                         goto done;
 405                 }
 406
 407                 vsp1->uds[i] = uds;
 408                 list_add_tail(&uds->entity.list_dev, &vsp1->entities);
 409         }
 410
 411         for (i = 0; i < vsp1->info->uif_count; ++i) {
 412                 struct vsp1_uif *uif;
 413
 414                 uif = vsp1_uif_create(vsp1, i);
 415                 if (IS_ERR(uif)) {
 416                         ret = PTR_ERR(uif);
 417                         goto done;
 418                 }
 419
 420                 vsp1->uif[i] = uif;
 421                 list_add_tail(&uif->entity.list_dev, &vsp1->entities);
 422         }
 423
 424         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 425                 struct vsp1_rwpf *wpf;
 426
 427                 wpf = vsp1_wpf_create(vsp1, i);
 428                 if (IS_ERR(wpf)) {
 429                         ret = PTR_ERR(wpf);
 430                         goto done;
 431                 }
 432
 433                 vsp1->wpf[i] = wpf;
 434                 list_add_tail(&wpf->entity.list_dev, &vsp1->entities);
 435
 436                 if (vsp1->info->uapi) {
 437                         struct vsp1_video *video = vsp1_video_create(vsp1, wpf);
 438
 439                         if (IS_ERR(video)) {
 440                                 ret = PTR_ERR(video);
 441                                 goto done;
 442                         }
 443
 444                         list_add_tail(&video->list, &vsp1->videos);
 445                 }
 446         }
 447
 448         /* Register all subdevs. */
 449         list_for_each_entry(entity, &vsp1->entities, list_dev) {
 450                 ret = v4l2_device_register_subdev(&vsp1->v4l2_dev,
 451                                                   &entity->subdev);
 452                 if (ret < 0)
 453                         goto done;
 454         }
 455
 456         /*
 457          * Create links and register subdev nodes if the userspace API is
 458          * enabled or initialize the DRM pipeline otherwise.
 459          */
 460         if (vsp1->info->uapi) {
 461                 ret = vsp1_uapi_create_links(vsp1);
 462                 if (ret < 0)
 463                         goto done;
 464
 465                 ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
 466                 if (ret < 0)
 467                         goto done;
 468
 469                 ret = media_device_register(mdev);
 470         } else {
 471                 ret = vsp1_drm_init(vsp1);
 472         }
 473
 474 done:
 475         if (ret < 0)
 476                 vsp1_destroy_entities(vsp1);
 477
 478         return ret;
 479 }
 480
 481 int vsp1_reset_wpf(struct vsp1_device *vsp1, unsigned int index)
 482 {
 483         unsigned int timeout;
 484         u32 status;
 485
 486         status = vsp1_read(vsp1, VI6_STATUS);
 487         if (!(status & VI6_STATUS_SYS_ACT(index)))
 488                 return 0;
 489
 490         vsp1_write(vsp1, VI6_SRESET, VI6_SRESET_SRTS(index));
 491         for (timeout = 10; timeout > 0; --timeout) {
 492                 status = vsp1_read(vsp1, VI6_STATUS);
 493                 if (!(status & VI6_STATUS_SYS_ACT(index)))
 494                         break;
 495
 496                 usleep_range(1000, 2000);
 497         }
 498
 499         if (!timeout) {
 500                 dev_err(vsp1->dev, "failed to reset wpf.%u\n", index);
 501                 return -ETIMEDOUT;
 502         }
 503
 504         return 0;
 505 }
 506
 507 static int vsp1_device_init(struct vsp1_device *vsp1)
 508 {
 509         unsigned int i;
 510         int ret;
 511
 512         /* Reset any channel that might be running. */
 513         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 514                 ret = vsp1_reset_wpf(vsp1, i);
 515                 if (ret < 0)
 516                         return ret;
 517         }
 518
 519         vsp1_write(vsp1, VI6_CLK_DCSWT, (8 << VI6_CLK_DCSWT_CSTPW_SHIFT) |
 520                    (8 << VI6_CLK_DCSWT_CSTRW_SHIFT));
 521
 522         for (i = 0; i < vsp1->info->rpf_count; ++i)
 523                 vsp1_write(vsp1, VI6_DPR_RPF_ROUTE(i), VI6_DPR_NODE_UNUSED);
 524
 525         for (i = 0; i < vsp1->info->uds_count; ++i)
 526                 vsp1_write(vsp1, VI6_DPR_UDS_ROUTE(i), VI6_DPR_NODE_UNUSED);
 527
 528         for (i = 0; i < vsp1->info->uif_count; ++i)
 529                 vsp1_write(vsp1, VI6_DPR_UIF_ROUTE(i), VI6_DPR_NODE_UNUSED);
 530
 531         vsp1_write(vsp1, VI6_DPR_SRU_ROUTE, VI6_DPR_NODE_UNUSED);
 532         vsp1_write(vsp1, VI6_DPR_LUT_ROUTE, VI6_DPR_NODE_UNUSED);
 533         vsp1_write(vsp1, VI6_DPR_CLU_ROUTE, VI6_DPR_NODE_UNUSED);
 534         vsp1_write(vsp1, VI6_DPR_HST_ROUTE, VI6_DPR_NODE_UNUSED);
 535         vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED);
 536         vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED);
 537
 538         if (vsp1_feature(vsp1, VSP1_HAS_BRS))
 539                 vsp1_write(vsp1, VI6_DPR_ILV_BRS_ROUTE, VI6_DPR_NODE_UNUSED);
 540
 541         vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
 542                    (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
 543         vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
 544                    (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
 545
 546         vsp1_dlm_setup(vsp1);
 547
 548         return 0;
 549 }
 550
 551 static void vsp1_mask_all_interrupts(struct vsp1_device *vsp1)
 552 {
 553         unsigned int i;
 554
 555         for (i = 0; i < vsp1->info->lif_count; ++i)
 556                 vsp1_write(vsp1, VI6_DISP_IRQ_ENB(i), 0);
 557         for (i = 0; i < vsp1->info->wpf_count; ++i)
 558                 vsp1_write(vsp1, VI6_WPF_IRQ_ENB(i), 0);
 559 }
 560
 561 /*
 562  * vsp1_device_get - Acquire the VSP1 device
 563  *
 564  * Make sure the device is not suspended and initialize it if needed.
 565  *
 566  * Return 0 on success or a negative error code otherwise.
 567  */
 568 int vsp1_device_get(struct vsp1_device *vsp1)
 569 {
 570         return pm_runtime_resume_and_get(vsp1->dev);
 571 }
 572
 573 /*
 574  * vsp1_device_put - Release the VSP1 device
 575  *
 576  * Decrement the VSP1 reference count and cleanup the device if the last
 577  * reference is released.
 578  */
 579 void vsp1_device_put(struct vsp1_device *vsp1)
 580 {
 581         pm_runtime_put_sync(vsp1->dev);
 582 }
 583
 584 /* -----------------------------------------------------------------------------
 585  * Power Management
 586  */
 587
 588 static int __maybe_unused vsp1_pm_suspend(struct device *dev)
 589 {
 590         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 591
 592         /*
 593          * When used as part of a display pipeline, the VSP is stopped and
 594          * restarted explicitly by the DU.
 595          */
 596         if (!vsp1->drm)
 597                 vsp1_video_suspend(vsp1);
 598
 599         pm_runtime_force_suspend(vsp1->dev);
 600
 601         return 0;
 602 }
 603
 604 static int __maybe_unused vsp1_pm_resume(struct device *dev)
 605 {
 606         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 607
 608         pm_runtime_force_resume(vsp1->dev);
 609
 610         /*
 611          * When used as part of a display pipeline, the VSP is stopped and
 612          * restarted explicitly by the DU.
 613          */
 614         if (!vsp1->drm)
 615                 vsp1_video_resume(vsp1);
 616
 617         return 0;
 618 }
 619
 620 static int __maybe_unused vsp1_pm_runtime_suspend(struct device *dev)
 621 {
 622         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 623
 624         rcar_fcp_disable(vsp1->fcp);
 625
 626         return 0;
 627 }
 628
 629 static int __maybe_unused vsp1_pm_runtime_resume(struct device *dev)
 630 {
 631         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 632         int ret;
 633
 634         if (vsp1->info) {
 635                 ret = vsp1_device_init(vsp1);
 636                 if (ret < 0)
 637                         return ret;
 638         }
 639
 640         return rcar_fcp_enable(vsp1->fcp);
 641 }
 642
 643 static const struct dev_pm_ops vsp1_pm_ops = {
 644         SET_SYSTEM_SLEEP_PM_OPS(vsp1_pm_suspend, vsp1_pm_resume)
 645         SET_RUNTIME_PM_OPS(vsp1_pm_runtime_suspend, vsp1_pm_runtime_resume, NULL)
 646 };
 647
 648 /* -----------------------------------------------------------------------------
 649  * Platform Driver
 650  */
 651
 652 static const struct vsp1_device_info vsp1_device_infos[] = {
 653         {
 654                 .version = VI6_IP_VERSION_MODEL_VSPS_H2,
 655                 .model = "VSP1-S",
 656                 .gen = 2,
 657                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
 658                           | VSP1_HAS_HGT | VSP1_HAS_LUT | VSP1_HAS_SRU
 659                           | VSP1_HAS_WPF_VFLIP,
 660                 .rpf_count = 5,
 661                 .uds_count = 3,
 662                 .wpf_count = 4,
 663                 .num_bru_inputs = 4,
 664                 .uapi = true,
 665         }, {
 666                 .version = VI6_IP_VERSION_MODEL_VSPR_H2,
 667                 .model = "VSP1-R",
 668                 .gen = 2,
 669                 .features = VSP1_HAS_BRU | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 670                 .rpf_count = 5,
 671                 .uds_count = 3,
 672                 .wpf_count = 4,
 673                 .num_bru_inputs = 4,
 674                 .uapi = true,
 675         }, {
 676                 .version = VI6_IP_VERSION_MODEL_VSPD_GEN2,
 677                 .model = "VSP1-D",
 678                 .gen = 2,
 679                 .features = VSP1_HAS_BRU | VSP1_HAS_HGO | VSP1_HAS_LUT,
 680                 .lif_count = 1,
 681                 .rpf_count = 4,
 682                 .uds_count = 1,
 683                 .wpf_count = 1,
 684                 .num_bru_inputs = 4,
 685                 .uapi = true,
 686         }, {
 687                 .version = VI6_IP_VERSION_MODEL_VSPS_M2,
 688                 .model = "VSP1-S",
 689                 .gen = 2,
 690                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
 691                           | VSP1_HAS_HGT | VSP1_HAS_LUT | VSP1_HAS_SRU
 692                           | VSP1_HAS_WPF_VFLIP,
 693                 .rpf_count = 5,
 694                 .uds_count = 1,
 695                 .wpf_count = 4,
 696                 .num_bru_inputs = 4,
 697                 .uapi = true,
 698         }, {
 699                 .version = VI6_IP_VERSION_MODEL_VSPS_V2H,
 700                 .model = "VSP1V-S",
 701                 .gen = 2,
 702                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 703                           | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 704                 .rpf_count = 4,
 705                 .uds_count = 1,
 706                 .wpf_count = 4,
 707                 .num_bru_inputs = 4,
 708                 .uapi = true,
 709         }, {
 710                 .version = VI6_IP_VERSION_MODEL_VSPD_V2H,
 711                 .model = "VSP1V-D",
 712                 .gen = 2,
 713                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT,
 714                 .lif_count = 1,
 715                 .rpf_count = 4,
 716                 .uds_count = 1,
 717                 .wpf_count = 1,
 718                 .num_bru_inputs = 4,
 719                 .uapi = true,
 720         }, {
 721                 .version = VI6_IP_VERSION_MODEL_VSPI_GEN3,
 722                 .model = "VSP2-I",
 723                 .gen = 3,
 724                 .features = VSP1_HAS_CLU | VSP1_HAS_HGO | VSP1_HAS_HGT
 725                           | VSP1_HAS_LUT | VSP1_HAS_SRU | VSP1_HAS_WPF_HFLIP
 726                           | VSP1_HAS_WPF_VFLIP,
 727                 .rpf_count = 1,
 728                 .uds_count = 1,
 729                 .wpf_count = 1,
 730                 .uapi = true,
 731         }, {
 732                 .version = VI6_IP_VERSION_MODEL_VSPBD_GEN3,
 733                 .model = "VSP2-BD",
 734                 .gen = 3,
 735                 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP,
 736                 .rpf_count = 5,
 737                 .wpf_count = 1,
 738                 .num_bru_inputs = 5,
 739                 .uapi = true,
 740         }, {
 741                 .version = VI6_IP_VERSION_MODEL_VSPBC_GEN3,
 742                 .model = "VSP2-BC",
 743                 .gen = 3,
 744                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
 745                           | VSP1_HAS_LUT | VSP1_HAS_WPF_VFLIP,
 746                 .rpf_count = 5,
 747                 .wpf_count = 1,
 748                 .num_bru_inputs = 5,
 749                 .uapi = true,
 750         }, {
 751                 .version = VI6_IP_VERSION_MODEL_VSPBS_GEN3,
 752                 .model = "VSP2-BS",
 753                 .gen = 3,
 754                 .features = VSP1_HAS_BRS | VSP1_HAS_WPF_VFLIP,
 755                 .rpf_count = 2,
 756                 .wpf_count = 1,
 757                 .uapi = true,
 758         }, {
 759                 .version = VI6_IP_VERSION_MODEL_VSPD_GEN3,
 760                 .model = "VSP2-D",
 761                 .gen = 3,
 762                 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP | VSP1_HAS_EXT_DL,
 763                 .lif_count = 1,
 764                 .rpf_count = 5,
 765                 .uif_count = 1,
 766                 .wpf_count = 2,
 767                 .num_bru_inputs = 5,
 768         }, {
 769                 .version = VI6_IP_VERSION_MODEL_VSPD_V3,
 770                 .model = "VSP2-D",
 771                 .gen = 3,
 772                 .features = VSP1_HAS_BRS | VSP1_HAS_BRU,
 773                 .lif_count = 1,
 774                 .rpf_count = 5,
 775                 .uif_count = 1,
 776                 .wpf_count = 1,
 777                 .num_bru_inputs = 5,
 778         }, {
 779                 .version = VI6_IP_VERSION_MODEL_VSPDL_GEN3,
 780                 .model = "VSP2-DL",
 781                 .gen = 3,
 782                 .features = VSP1_HAS_BRS | VSP1_HAS_BRU | VSP1_HAS_EXT_DL,
 783                 .lif_count = 2,
 784                 .rpf_count = 5,
 785                 .uif_count = 2,
 786                 .wpf_count = 2,
 787                 .num_bru_inputs = 5,
 788         }, {
 789                 .version = VI6_IP_VERSION_MODEL_VSPD_V3U,
 790                 .model = "VSP2-D",
 791                 .gen = 3,
 792                 .features = VSP1_HAS_BRU | VSP1_HAS_EXT_DL,
 793                 .lif_count = 1,
 794                 .rpf_count = 5,
 795                 .uif_count = 2,
 796                 .wpf_count = 1,
 797                 .num_bru_inputs = 5,
 798         },
 799 };
 800
 801 static int vsp1_probe(struct platform_device *pdev)
 802 {
 803         struct vsp1_device *vsp1;
 804         struct device_node *fcp_node;
 805         unsigned int i;
 806         int ret;
 807         int irq;
 808
 809         vsp1 = devm_kzalloc(&pdev->dev, sizeof(*vsp1), GFP_KERNEL);
 810         if (vsp1 == NULL)
 811                 return -ENOMEM;
 812
 813         vsp1->dev = &pdev->dev;
 814         INIT_LIST_HEAD(&vsp1->entities);
 815         INIT_LIST_HEAD(&vsp1->videos);
 816
 817         platform_set_drvdata(pdev, vsp1);
 818
 819         /* I/O and IRQ resources (clock managed by the clock PM domain). */
 820         vsp1->mmio = devm_platform_ioremap_resource(pdev, 0);
 821         if (IS_ERR(vsp1->mmio))
 822                 return PTR_ERR(vsp1->mmio);
 823
 824         irq = platform_get_irq(pdev, 0);
 825         if (irq < 0)
 826                 return irq;
 827
 828         /* FCP (optional). */
 829         fcp_node = of_parse_phandle(pdev->dev.of_node, "renesas,fcp", 0);
 830         if (fcp_node) {
 831                 vsp1->fcp = rcar_fcp_get(fcp_node);
 832                 of_node_put(fcp_node);
 833                 if (IS_ERR(vsp1->fcp)) {
 834                         dev_dbg(&pdev->dev, "FCP not found (%ld)\n",
 835                                 PTR_ERR(vsp1->fcp));
 836                         return PTR_ERR(vsp1->fcp);
 837                 }
 838
 839                 /*
 840                  * When the FCP is present, it handles all bus master accesses
 841                  * for the VSP and must thus be used in place of the VSP device
 842                  * to map DMA buffers.
 843                  */
 844                 vsp1->bus_master = rcar_fcp_get_device(vsp1->fcp);
 845         } else {
 846                 vsp1->bus_master = vsp1->dev;
 847         }
 848
 849         /* Configure device parameters based on the version register. */
 850         pm_runtime_enable(&pdev->dev);
 851
 852         ret = vsp1_device_get(vsp1);
 853         if (ret < 0)
 854                 goto done;
 855
 856         vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION);
 857
 858         for (i = 0; i < ARRAY_SIZE(vsp1_device_infos); ++i) {
 859                 if ((vsp1->version & VI6_IP_VERSION_MODEL_MASK) ==
 860                     vsp1_device_infos[i].version) {
 861                         vsp1->info = &vsp1_device_infos[i];
 862                         break;
 863                 }
 864         }
 865
 866         if (!vsp1->info) {
 867                 dev_err(&pdev->dev, "unsupported IP version 0x%08x\n",
 868                         vsp1->version);
 869                 vsp1_device_put(vsp1);
 870                 ret = -ENXIO;
 871                 goto done;
 872         }
 873
 874         dev_dbg(&pdev->dev, "IP version 0x%08x\n", vsp1->version);
 875
 876         /*
 877          * Previous use of the hardware (e.g. by the bootloader) could leave
 878          * some interrupts enabled and pending.
 879          *
 880          * TODO: Investigate if this shouldn't be better handled by using the
 881          * device reset provided by the CPG.
 882          */
 883         vsp1_mask_all_interrupts(vsp1);
 884
 885         vsp1_device_put(vsp1);
 886
 887         ret = devm_request_irq(&pdev->dev, irq, vsp1_irq_handler,
 888                                IRQF_SHARED, dev_name(&pdev->dev), vsp1);
 889         if (ret < 0) {
 890                 dev_err(&pdev->dev, "failed to request IRQ\n");
 891                 goto done;
 892         }
 893
 894         /* Instantiate entities. */
 895         ret = vsp1_create_entities(vsp1);
 896         if (ret < 0) {
 897                 dev_err(&pdev->dev, "failed to create entities\n");
 898                 goto done;
 899         }
 900
 901 done:
 902         if (ret) {
 903                 pm_runtime_disable(&pdev->dev);
 904                 rcar_fcp_put(vsp1->fcp);
 905         }
 906
 907         return ret;
 908 }
 909
 910 static int vsp1_remove(struct platform_device *pdev)
 911 {
 912         struct vsp1_device *vsp1 = platform_get_drvdata(pdev);
 913
 914         vsp1_destroy_entities(vsp1);
 915         rcar_fcp_put(vsp1->fcp);
 916
 917         pm_runtime_disable(&pdev->dev);
 918
 919         return 0;
 920 }
 921
 922 static const struct of_device_id vsp1_of_match[] = {
 923         { .compatible = "renesas,vsp1" },
 924         { .compatible = "renesas,vsp2" },
 925         { },
 926 };
 927 MODULE_DEVICE_TABLE(of, vsp1_of_match);
 928
 929 static struct platform_driver vsp1_platform_driver = {
 930         .probe          = vsp1_probe,
 931         .remove         = vsp1_remove,
 932         .driver         = {
 933                 .name   = "vsp1",
 934                 .pm     = &vsp1_pm_ops,
 935                 .of_match_table = vsp1_of_match,
 936         },
 937 };
 938
 939 module_platform_driver(vsp1_platform_driver);
 940
 941 MODULE_ALIAS("vsp1");
 942 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
 943 MODULE_DESCRIPTION("Renesas VSP1 Driver");
 944 MODULE_LICENSE("GPL");