drivers/media/platform/vsp1/vsp1_drv.c

   1 /*
   2  * vsp1_drv.c  --  R-Car VSP1 Driver
   3  *
   4  * Copyright (C) 2013-2015 Renesas Electronics Corporation
   5  *
   6  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #include <linux/clk.h>
  15 #include <linux/delay.h>
  16 #include <linux/device.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/module.h>
  19 #include <linux/of.h>
  20 #include <linux/of_device.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/pm_runtime.h>
  23 #include <linux/videodev2.h>
  24
  25 #include <media/rcar-fcp.h>
  26 #include <media/v4l2-subdev.h>
  27
  28 #include "vsp1.h"
  29 #include "vsp1_bru.h"
  30 #include "vsp1_clu.h"
  31 #include "vsp1_dl.h"
  32 #include "vsp1_drm.h"
  33 #include "vsp1_hgo.h"
  34 #include "vsp1_hgt.h"
  35 #include "vsp1_hsit.h"
  36 #include "vsp1_lif.h"
  37 #include "vsp1_lut.h"
  38 #include "vsp1_pipe.h"
  39 #include "vsp1_rwpf.h"
  40 #include "vsp1_sru.h"
  41 #include "vsp1_uds.h"
  42 #include "vsp1_video.h"
  43
  44 /* -----------------------------------------------------------------------------
  45  * Interrupt Handling
  46  */
  47
  48 static irqreturn_t vsp1_irq_handler(int irq, void *data)
  49 {
  50         u32 mask = VI6_WFP_IRQ_STA_DFE | VI6_WFP_IRQ_STA_FRE;
  51         struct vsp1_device *vsp1 = data;
  52         irqreturn_t ret = IRQ_NONE;
  53         unsigned int i;
  54         u32 status;
  55
  56         for (i = 0; i < vsp1->info->wpf_count; ++i) {
  57                 struct vsp1_rwpf *wpf = vsp1->wpf[i];
  58
  59                 if (wpf == NULL)
  60                         continue;
  61
  62                 status = vsp1_read(vsp1, VI6_WPF_IRQ_STA(i));
  63                 vsp1_write(vsp1, VI6_WPF_IRQ_STA(i), ~status & mask);
  64
  65                 if (status & VI6_WFP_IRQ_STA_DFE) {
  66                         vsp1_pipeline_frame_end(wpf->pipe);
  67                         ret = IRQ_HANDLED;
  68                 }
  69         }
  70
  71         return ret;
  72 }
  73
  74 /* -----------------------------------------------------------------------------
  75  * Entities
  76  */
  77
  78 /*
  79  * vsp1_create_sink_links - Create links from all sources to the given sink
  80  *
  81  * This function creates media links from all valid sources to the given sink
  82  * pad. Links that would be invalid according to the VSP1 hardware capabilities
  83  * are skipped. Those include all links
  84  *
  85  * - from a UDS to a UDS (UDS entities can't be chained)
  86  * - from an entity to itself (no loops are allowed)
  87  *
  88  * Furthermore, the BRS can't be connected to histogram generators, but no
  89  * special check is currently needed as all VSP instances that include a BRS
  90  * have no histogram generator.
  91  */
  92 static int vsp1_create_sink_links(struct vsp1_device *vsp1,
  93                                   struct vsp1_entity *sink)
  94 {
  95         struct media_entity *entity = &sink->subdev.entity;
  96         struct vsp1_entity *source;
  97         unsigned int pad;
  98         int ret;
  99
 100         list_for_each_entry(source, &vsp1->entities, list_dev) {
 101                 u32 flags;
 102
 103                 if (source->type == sink->type)
 104                         continue;
 105
 106                 if (source->type == VSP1_ENTITY_HGO ||
 107                     source->type == VSP1_ENTITY_HGT ||
 108                     source->type == VSP1_ENTITY_LIF ||
 109                     source->type == VSP1_ENTITY_WPF)
 110                         continue;
 111
 112                 flags = source->type == VSP1_ENTITY_RPF &&
 113                         sink->type == VSP1_ENTITY_WPF &&
 114                         source->index == sink->index
 115                       ? MEDIA_LNK_FL_ENABLED : 0;
 116
 117                 for (pad = 0; pad < entity->num_pads; ++pad) {
 118                         if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK))
 119                                 continue;
 120
 121                         ret = media_create_pad_link(&source->subdev.entity,
 122                                                        source->source_pad,
 123                                                        entity, pad, flags);
 124                         if (ret < 0)
 125                                 return ret;
 126
 127                         if (flags & MEDIA_LNK_FL_ENABLED)
 128                                 source->sink = sink;
 129                 }
 130         }
 131
 132         return 0;
 133 }
 134
 135 static int vsp1_uapi_create_links(struct vsp1_device *vsp1)
 136 {
 137         struct vsp1_entity *entity;
 138         unsigned int i;
 139         int ret;
 140
 141         list_for_each_entry(entity, &vsp1->entities, list_dev) {
 142                 if (entity->type == VSP1_ENTITY_LIF ||
 143                     entity->type == VSP1_ENTITY_RPF)
 144                         continue;
 145
 146                 ret = vsp1_create_sink_links(vsp1, entity);
 147                 if (ret < 0)
 148                         return ret;
 149         }
 150
 151         if (vsp1->hgo) {
 152                 ret = media_create_pad_link(&vsp1->hgo->histo.entity.subdev.entity,
 153                                             HISTO_PAD_SOURCE,
 154                                             &vsp1->hgo->histo.video.entity, 0,
 155                                             MEDIA_LNK_FL_ENABLED |
 156                                             MEDIA_LNK_FL_IMMUTABLE);
 157                 if (ret < 0)
 158                         return ret;
 159         }
 160
 161         if (vsp1->hgt) {
 162                 ret = media_create_pad_link(&vsp1->hgt->histo.entity.subdev.entity,
 163                                             HISTO_PAD_SOURCE,
 164                                             &vsp1->hgt->histo.video.entity, 0,
 165                                             MEDIA_LNK_FL_ENABLED |
 166                                             MEDIA_LNK_FL_IMMUTABLE);
 167                 if (ret < 0)
 168                         return ret;
 169         }
 170
 171         for (i = 0; i < vsp1->info->lif_count; ++i) {
 172                 if (!vsp1->lif[i])
 173                         continue;
 174
 175                 ret = media_create_pad_link(&vsp1->wpf[i]->entity.subdev.entity,
 176                                             RWPF_PAD_SOURCE,
 177                                             &vsp1->lif[i]->entity.subdev.entity,
 178                                             LIF_PAD_SINK, 0);
 179                 if (ret < 0)
 180                         return ret;
 181         }
 182
 183         for (i = 0; i < vsp1->info->rpf_count; ++i) {
 184                 struct vsp1_rwpf *rpf = vsp1->rpf[i];
 185
 186                 ret = media_create_pad_link(&rpf->video->video.entity, 0,
 187                                             &rpf->entity.subdev.entity,
 188                                             RWPF_PAD_SINK,
 189                                             MEDIA_LNK_FL_ENABLED |
 190                                             MEDIA_LNK_FL_IMMUTABLE);
 191                 if (ret < 0)
 192                         return ret;
 193         }
 194
 195         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 196                 /*
 197                  * Connect the video device to the WPF. All connections are
 198                  * immutable.
 199                  */
 200                 struct vsp1_rwpf *wpf = vsp1->wpf[i];
 201
 202                 ret = media_create_pad_link(&wpf->entity.subdev.entity,
 203                                             RWPF_PAD_SOURCE,
 204                                             &wpf->video->video.entity, 0,
 205                                             MEDIA_LNK_FL_IMMUTABLE |
 206                                             MEDIA_LNK_FL_ENABLED);
 207                 if (ret < 0)
 208                         return ret;
 209         }
 210
 211         return 0;
 212 }
 213
 214 static void vsp1_destroy_entities(struct vsp1_device *vsp1)
 215 {
 216         struct vsp1_entity *entity, *_entity;
 217         struct vsp1_video *video, *_video;
 218
 219         list_for_each_entry_safe(entity, _entity, &vsp1->entities, list_dev) {
 220                 list_del(&entity->list_dev);
 221                 vsp1_entity_destroy(entity);
 222         }
 223
 224         list_for_each_entry_safe(video, _video, &vsp1->videos, list) {
 225                 list_del(&video->list);
 226                 vsp1_video_cleanup(video);
 227         }
 228
 229         v4l2_device_unregister(&vsp1->v4l2_dev);
 230         if (vsp1->info->uapi)
 231                 media_device_unregister(&vsp1->media_dev);
 232         media_device_cleanup(&vsp1->media_dev);
 233
 234         if (!vsp1->info->uapi)
 235                 vsp1_drm_cleanup(vsp1);
 236 }
 237
 238 static int vsp1_create_entities(struct vsp1_device *vsp1)
 239 {
 240         struct media_device *mdev = &vsp1->media_dev;
 241         struct v4l2_device *vdev = &vsp1->v4l2_dev;
 242         struct vsp1_entity *entity;
 243         unsigned int i;
 244         int ret;
 245
 246         mdev->dev = vsp1->dev;
 247         mdev->hw_revision = vsp1->version;
 248         strlcpy(mdev->model, vsp1->info->model, sizeof(mdev->model));
 249         snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
 250                  dev_name(mdev->dev));
 251         media_device_init(mdev);
 252
 253         vsp1->media_ops.link_setup = vsp1_entity_link_setup;
 254         /*
 255          * Don't perform link validation when the userspace API is disabled as
 256          * the pipeline is configured internally by the driver in that case, and
 257          * its configuration can thus be trusted.
 258          */
 259         if (vsp1->info->uapi)
 260                 vsp1->media_ops.link_validate = v4l2_subdev_link_validate;
 261
 262         vdev->mdev = mdev;
 263         ret = v4l2_device_register(vsp1->dev, vdev);
 264         if (ret < 0) {
 265                 dev_err(vsp1->dev, "V4L2 device registration failed (%d)\n",
 266                         ret);
 267                 goto done;
 268         }
 269
 270         /* Instantiate all the entities. */
 271         if (vsp1->info->features & VSP1_HAS_BRS) {
 272                 vsp1->brs = vsp1_bru_create(vsp1, VSP1_ENTITY_BRS);
 273                 if (IS_ERR(vsp1->brs)) {
 274                         ret = PTR_ERR(vsp1->brs);
 275                         goto done;
 276                 }
 277
 278                 list_add_tail(&vsp1->brs->entity.list_dev, &vsp1->entities);
 279         }
 280
 281         if (vsp1->info->features & VSP1_HAS_BRU) {
 282                 vsp1->bru = vsp1_bru_create(vsp1, VSP1_ENTITY_BRU);
 283                 if (IS_ERR(vsp1->bru)) {
 284                         ret = PTR_ERR(vsp1->bru);
 285                         goto done;
 286                 }
 287
 288                 list_add_tail(&vsp1->bru->entity.list_dev, &vsp1->entities);
 289         }
 290
 291         if (vsp1->info->features & VSP1_HAS_CLU) {
 292                 vsp1->clu = vsp1_clu_create(vsp1);
 293                 if (IS_ERR(vsp1->clu)) {
 294                         ret = PTR_ERR(vsp1->clu);
 295                         goto done;
 296                 }
 297
 298                 list_add_tail(&vsp1->clu->entity.list_dev, &vsp1->entities);
 299         }
 300
 301         vsp1->hsi = vsp1_hsit_create(vsp1, true);
 302         if (IS_ERR(vsp1->hsi)) {
 303                 ret = PTR_ERR(vsp1->hsi);
 304                 goto done;
 305         }
 306
 307         list_add_tail(&vsp1->hsi->entity.list_dev, &vsp1->entities);
 308
 309         vsp1->hst = vsp1_hsit_create(vsp1, false);
 310         if (IS_ERR(vsp1->hst)) {
 311                 ret = PTR_ERR(vsp1->hst);
 312                 goto done;
 313         }
 314
 315         list_add_tail(&vsp1->hst->entity.list_dev, &vsp1->entities);
 316
 317         if (vsp1->info->features & VSP1_HAS_HGO && vsp1->info->uapi) {
 318                 vsp1->hgo = vsp1_hgo_create(vsp1);
 319                 if (IS_ERR(vsp1->hgo)) {
 320                         ret = PTR_ERR(vsp1->hgo);
 321                         goto done;
 322                 }
 323
 324                 list_add_tail(&vsp1->hgo->histo.entity.list_dev,
 325                               &vsp1->entities);
 326         }
 327
 328         if (vsp1->info->features & VSP1_HAS_HGT && vsp1->info->uapi) {
 329                 vsp1->hgt = vsp1_hgt_create(vsp1);
 330                 if (IS_ERR(vsp1->hgt)) {
 331                         ret = PTR_ERR(vsp1->hgt);
 332                         goto done;
 333                 }
 334
 335                 list_add_tail(&vsp1->hgt->histo.entity.list_dev,
 336                               &vsp1->entities);
 337         }
 338
 339         /*
 340          * The LIFs are only supported when used in conjunction with the DU, in
 341          * which case the userspace API is disabled. If the userspace API is
 342          * enabled skip the LIFs, even when present.
 343          */
 344         if (!vsp1->info->uapi) {
 345                 for (i = 0; i < vsp1->info->lif_count; ++i) {
 346                         struct vsp1_lif *lif;
 347
 348                         lif = vsp1_lif_create(vsp1, i);
 349                         if (IS_ERR(lif)) {
 350                                 ret = PTR_ERR(lif);
 351                                 goto done;
 352                         }
 353
 354                         vsp1->lif[i] = lif;
 355                         list_add_tail(&lif->entity.list_dev, &vsp1->entities);
 356                 }
 357         }
 358
 359         if (vsp1->info->features & VSP1_HAS_LUT) {
 360                 vsp1->lut = vsp1_lut_create(vsp1);
 361                 if (IS_ERR(vsp1->lut)) {
 362                         ret = PTR_ERR(vsp1->lut);
 363                         goto done;
 364                 }
 365
 366                 list_add_tail(&vsp1->lut->entity.list_dev, &vsp1->entities);
 367         }
 368
 369         for (i = 0; i < vsp1->info->rpf_count; ++i) {
 370                 struct vsp1_rwpf *rpf;
 371
 372                 rpf = vsp1_rpf_create(vsp1, i);
 373                 if (IS_ERR(rpf)) {
 374                         ret = PTR_ERR(rpf);
 375                         goto done;
 376                 }
 377
 378                 vsp1->rpf[i] = rpf;
 379                 list_add_tail(&rpf->entity.list_dev, &vsp1->entities);
 380
 381                 if (vsp1->info->uapi) {
 382                         struct vsp1_video *video = vsp1_video_create(vsp1, rpf);
 383
 384                         if (IS_ERR(video)) {
 385                                 ret = PTR_ERR(video);
 386                                 goto done;
 387                         }
 388
 389                         list_add_tail(&video->list, &vsp1->videos);
 390                 }
 391         }
 392
 393         if (vsp1->info->features & VSP1_HAS_SRU) {
 394                 vsp1->sru = vsp1_sru_create(vsp1);
 395                 if (IS_ERR(vsp1->sru)) {
 396                         ret = PTR_ERR(vsp1->sru);
 397                         goto done;
 398                 }
 399
 400                 list_add_tail(&vsp1->sru->entity.list_dev, &vsp1->entities);
 401         }
 402
 403         for (i = 0; i < vsp1->info->uds_count; ++i) {
 404                 struct vsp1_uds *uds;
 405
 406                 uds = vsp1_uds_create(vsp1, i);
 407                 if (IS_ERR(uds)) {
 408                         ret = PTR_ERR(uds);
 409                         goto done;
 410                 }
 411
 412                 vsp1->uds[i] = uds;
 413                 list_add_tail(&uds->entity.list_dev, &vsp1->entities);
 414         }
 415
 416         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 417                 struct vsp1_rwpf *wpf;
 418
 419                 wpf = vsp1_wpf_create(vsp1, i);
 420                 if (IS_ERR(wpf)) {
 421                         ret = PTR_ERR(wpf);
 422                         goto done;
 423                 }
 424
 425                 vsp1->wpf[i] = wpf;
 426                 list_add_tail(&wpf->entity.list_dev, &vsp1->entities);
 427
 428                 if (vsp1->info->uapi) {
 429                         struct vsp1_video *video = vsp1_video_create(vsp1, wpf);
 430
 431                         if (IS_ERR(video)) {
 432                                 ret = PTR_ERR(video);
 433                                 goto done;
 434                         }
 435
 436                         list_add_tail(&video->list, &vsp1->videos);
 437                 }
 438         }
 439
 440         /* Register all subdevs. */
 441         list_for_each_entry(entity, &vsp1->entities, list_dev) {
 442                 ret = v4l2_device_register_subdev(&vsp1->v4l2_dev,
 443                                                   &entity->subdev);
 444                 if (ret < 0)
 445                         goto done;
 446         }
 447
 448         /*
 449          * Create links and register subdev nodes if the userspace API is
 450          * enabled or initialize the DRM pipeline otherwise.
 451          */
 452         if (vsp1->info->uapi) {
 453                 ret = vsp1_uapi_create_links(vsp1);
 454                 if (ret < 0)
 455                         goto done;
 456
 457                 ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
 458                 if (ret < 0)
 459                         goto done;
 460
 461                 ret = media_device_register(mdev);
 462         } else {
 463                 ret = vsp1_drm_init(vsp1);
 464         }
 465
 466 done:
 467         if (ret < 0)
 468                 vsp1_destroy_entities(vsp1);
 469
 470         return ret;
 471 }
 472
 473 int vsp1_reset_wpf(struct vsp1_device *vsp1, unsigned int index)
 474 {
 475         unsigned int timeout;
 476         u32 status;
 477
 478         status = vsp1_read(vsp1, VI6_STATUS);
 479         if (!(status & VI6_STATUS_SYS_ACT(index)))
 480                 return 0;
 481
 482         vsp1_write(vsp1, VI6_SRESET, VI6_SRESET_SRTS(index));
 483         for (timeout = 10; timeout > 0; --timeout) {
 484                 status = vsp1_read(vsp1, VI6_STATUS);
 485                 if (!(status & VI6_STATUS_SYS_ACT(index)))
 486                         break;
 487
 488                 usleep_range(1000, 2000);
 489         }
 490
 491         if (!timeout) {
 492                 dev_err(vsp1->dev, "failed to reset wpf.%u\n", index);
 493                 return -ETIMEDOUT;
 494         }
 495
 496         return 0;
 497 }
 498
 499 static int vsp1_device_init(struct vsp1_device *vsp1)
 500 {
 501         unsigned int i;
 502         int ret;
 503
 504         /* Reset any channel that might be running. */
 505         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 506                 ret = vsp1_reset_wpf(vsp1, i);
 507                 if (ret < 0)
 508                         return ret;
 509         }
 510
 511         vsp1_write(vsp1, VI6_CLK_DCSWT, (8 << VI6_CLK_DCSWT_CSTPW_SHIFT) |
 512                    (8 << VI6_CLK_DCSWT_CSTRW_SHIFT));
 513
 514         for (i = 0; i < vsp1->info->rpf_count; ++i)
 515                 vsp1_write(vsp1, VI6_DPR_RPF_ROUTE(i), VI6_DPR_NODE_UNUSED);
 516
 517         for (i = 0; i < vsp1->info->uds_count; ++i)
 518                 vsp1_write(vsp1, VI6_DPR_UDS_ROUTE(i), VI6_DPR_NODE_UNUSED);
 519
 520         vsp1_write(vsp1, VI6_DPR_SRU_ROUTE, VI6_DPR_NODE_UNUSED);
 521         vsp1_write(vsp1, VI6_DPR_LUT_ROUTE, VI6_DPR_NODE_UNUSED);
 522         vsp1_write(vsp1, VI6_DPR_CLU_ROUTE, VI6_DPR_NODE_UNUSED);
 523         vsp1_write(vsp1, VI6_DPR_HST_ROUTE, VI6_DPR_NODE_UNUSED);
 524         vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED);
 525         vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED);
 526
 527         if (vsp1->info->features & VSP1_HAS_BRS)
 528                 vsp1_write(vsp1, VI6_DPR_ILV_BRS_ROUTE, VI6_DPR_NODE_UNUSED);
 529
 530         vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
 531                    (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
 532         vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
 533                    (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
 534
 535         vsp1_dlm_setup(vsp1);
 536
 537         return 0;
 538 }
 539
 540 /*
 541  * vsp1_device_get - Acquire the VSP1 device
 542  *
 543  * Make sure the device is not suspended and initialize it if needed.
 544  *
 545  * Return 0 on success or a negative error code otherwise.
 546  */
 547 int vsp1_device_get(struct vsp1_device *vsp1)
 548 {
 549         int ret;
 550
 551         ret = pm_runtime_get_sync(vsp1->dev);
 552         return ret < 0 ? ret : 0;
 553 }
 554
 555 /*
 556  * vsp1_device_put - Release the VSP1 device
 557  *
 558  * Decrement the VSP1 reference count and cleanup the device if the last
 559  * reference is released.
 560  */
 561 void vsp1_device_put(struct vsp1_device *vsp1)
 562 {
 563         pm_runtime_put_sync(vsp1->dev);
 564 }
 565
 566 /* -----------------------------------------------------------------------------
 567  * Power Management
 568  */
 569
 570 static int __maybe_unused vsp1_pm_suspend(struct device *dev)
 571 {
 572         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 573
 574         /*
 575          * When used as part of a display pipeline, the VSP is stopped and
 576          * restarted explicitly by the DU.
 577          */
 578         if (!vsp1->drm)
 579                 vsp1_pipelines_suspend(vsp1);
 580
 581         pm_runtime_force_suspend(vsp1->dev);
 582
 583         return 0;
 584 }
 585
 586 static int __maybe_unused vsp1_pm_resume(struct device *dev)
 587 {
 588         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 589
 590         pm_runtime_force_resume(vsp1->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_pipelines_resume(vsp1);
 598
 599         return 0;
 600 }
 601
 602 static int __maybe_unused vsp1_pm_runtime_suspend(struct device *dev)
 603 {
 604         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 605
 606         rcar_fcp_disable(vsp1->fcp);
 607
 608         return 0;
 609 }
 610
 611 static int __maybe_unused vsp1_pm_runtime_resume(struct device *dev)
 612 {
 613         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 614         int ret;
 615
 616         if (vsp1->info) {
 617                 ret = vsp1_device_init(vsp1);
 618                 if (ret < 0)
 619                         return ret;
 620         }
 621
 622         return rcar_fcp_enable(vsp1->fcp);
 623 }
 624
 625 static const struct dev_pm_ops vsp1_pm_ops = {
 626         SET_SYSTEM_SLEEP_PM_OPS(vsp1_pm_suspend, vsp1_pm_resume)
 627         SET_RUNTIME_PM_OPS(vsp1_pm_runtime_suspend, vsp1_pm_runtime_resume, NULL)
 628 };
 629
 630 /* -----------------------------------------------------------------------------
 631  * Platform Driver
 632  */
 633
 634 static const struct vsp1_device_info vsp1_device_infos[] = {
 635         {
 636                 .version = VI6_IP_VERSION_MODEL_VSPS_H2,
 637                 .model = "VSP1-S",
 638                 .gen = 2,
 639                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
 640                           | VSP1_HAS_HGT | VSP1_HAS_LUT | VSP1_HAS_SRU
 641                           | VSP1_HAS_WPF_VFLIP,
 642                 .rpf_count = 5,
 643                 .uds_count = 3,
 644                 .wpf_count = 4,
 645                 .num_bru_inputs = 4,
 646                 .uapi = true,
 647         }, {
 648                 .version = VI6_IP_VERSION_MODEL_VSPR_H2,
 649                 .model = "VSP1-R",
 650                 .gen = 2,
 651                 .features = VSP1_HAS_BRU | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 652                 .rpf_count = 5,
 653                 .uds_count = 3,
 654                 .wpf_count = 4,
 655                 .num_bru_inputs = 4,
 656                 .uapi = true,
 657         }, {
 658                 .version = VI6_IP_VERSION_MODEL_VSPD_GEN2,
 659                 .model = "VSP1-D",
 660                 .gen = 2,
 661                 .features = VSP1_HAS_BRU | VSP1_HAS_HGO | VSP1_HAS_LUT,
 662                 .lif_count = 1,
 663                 .rpf_count = 4,
 664                 .uds_count = 1,
 665                 .wpf_count = 1,
 666                 .num_bru_inputs = 4,
 667                 .uapi = true,
 668         }, {
 669                 .version = VI6_IP_VERSION_MODEL_VSPS_M2,
 670                 .model = "VSP1-S",
 671                 .gen = 2,
 672                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
 673                           | VSP1_HAS_HGT | VSP1_HAS_LUT | VSP1_HAS_SRU
 674                           | VSP1_HAS_WPF_VFLIP,
 675                 .rpf_count = 5,
 676                 .uds_count = 1,
 677                 .wpf_count = 4,
 678                 .num_bru_inputs = 4,
 679                 .uapi = true,
 680         }, {
 681                 .version = VI6_IP_VERSION_MODEL_VSPS_V2H,
 682                 .model = "VSP1V-S",
 683                 .gen = 2,
 684                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 685                           | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 686                 .rpf_count = 4,
 687                 .uds_count = 1,
 688                 .wpf_count = 4,
 689                 .num_bru_inputs = 4,
 690                 .uapi = true,
 691         }, {
 692                 .version = VI6_IP_VERSION_MODEL_VSPD_V2H,
 693                 .model = "VSP1V-D",
 694                 .gen = 2,
 695                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT,
 696                 .lif_count = 1,
 697                 .rpf_count = 4,
 698                 .uds_count = 1,
 699                 .wpf_count = 1,
 700                 .num_bru_inputs = 4,
 701                 .uapi = true,
 702         }, {
 703                 .version = VI6_IP_VERSION_MODEL_VSPI_GEN3,
 704                 .model = "VSP2-I",
 705                 .gen = 3,
 706                 .features = VSP1_HAS_CLU | VSP1_HAS_HGO | VSP1_HAS_HGT
 707                           | VSP1_HAS_LUT | VSP1_HAS_SRU | VSP1_HAS_WPF_HFLIP
 708                           | VSP1_HAS_WPF_VFLIP,
 709                 .rpf_count = 1,
 710                 .uds_count = 1,
 711                 .wpf_count = 1,
 712                 .uapi = true,
 713         }, {
 714                 .version = VI6_IP_VERSION_MODEL_VSPBD_GEN3,
 715                 .model = "VSP2-BD",
 716                 .gen = 3,
 717                 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP,
 718                 .rpf_count = 5,
 719                 .wpf_count = 1,
 720                 .num_bru_inputs = 5,
 721                 .uapi = true,
 722         }, {
 723                 .version = VI6_IP_VERSION_MODEL_VSPBC_GEN3,
 724                 .model = "VSP2-BC",
 725                 .gen = 3,
 726                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_HGO
 727                           | VSP1_HAS_LUT | VSP1_HAS_WPF_VFLIP,
 728                 .rpf_count = 5,
 729                 .wpf_count = 1,
 730                 .num_bru_inputs = 5,
 731                 .uapi = true,
 732         }, {
 733                 .version = VI6_IP_VERSION_MODEL_VSPBS_GEN3,
 734                 .model = "VSP2-BS",
 735                 .gen = 3,
 736                 .features = VSP1_HAS_BRS | VSP1_HAS_WPF_VFLIP,
 737                 .rpf_count = 2,
 738                 .wpf_count = 1,
 739                 .uapi = true,
 740         }, {
 741                 .version = VI6_IP_VERSION_MODEL_VSPD_GEN3,
 742                 .model = "VSP2-D",
 743                 .gen = 3,
 744                 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP,
 745                 .lif_count = 1,
 746                 .rpf_count = 5,
 747                 .wpf_count = 2,
 748                 .num_bru_inputs = 5,
 749         }, {
 750                 .version = VI6_IP_VERSION_MODEL_VSPD_V3,
 751                 .model = "VSP2-D",
 752                 .gen = 3,
 753                 .features = VSP1_HAS_BRS | VSP1_HAS_BRU,
 754                 .lif_count = 1,
 755                 .rpf_count = 5,
 756                 .wpf_count = 1,
 757                 .num_bru_inputs = 5,
 758         }, {
 759                 .version = VI6_IP_VERSION_MODEL_VSPDL_GEN3,
 760                 .model = "VSP2-DL",
 761                 .gen = 3,
 762                 .features = VSP1_HAS_BRS | VSP1_HAS_BRU,
 763                 .lif_count = 2,
 764                 .rpf_count = 5,
 765                 .wpf_count = 2,
 766                 .num_bru_inputs = 5,
 767         },
 768 };
 769
 770 static int vsp1_probe(struct platform_device *pdev)
 771 {
 772         struct vsp1_device *vsp1;
 773         struct device_node *fcp_node;
 774         struct resource *irq;
 775         struct resource *io;
 776         unsigned int i;
 777         int ret;
 778
 779         vsp1 = devm_kzalloc(&pdev->dev, sizeof(*vsp1), GFP_KERNEL);
 780         if (vsp1 == NULL)
 781                 return -ENOMEM;
 782
 783         vsp1->dev = &pdev->dev;
 784         INIT_LIST_HEAD(&vsp1->entities);
 785         INIT_LIST_HEAD(&vsp1->videos);
 786
 787         platform_set_drvdata(pdev, vsp1);
 788
 789         /* I/O and IRQ resources (clock managed by the clock PM domain) */
 790         io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 791         vsp1->mmio = devm_ioremap_resource(&pdev->dev, io);
 792         if (IS_ERR(vsp1->mmio))
 793                 return PTR_ERR(vsp1->mmio);
 794
 795         irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 796         if (!irq) {
 797                 dev_err(&pdev->dev, "missing IRQ\n");
 798                 return -EINVAL;
 799         }
 800
 801         ret = devm_request_irq(&pdev->dev, irq->start, vsp1_irq_handler,
 802                               IRQF_SHARED, dev_name(&pdev->dev), vsp1);
 803         if (ret < 0) {
 804                 dev_err(&pdev->dev, "failed to request IRQ\n");
 805                 return ret;
 806         }
 807
 808         /* FCP (optional) */
 809         fcp_node = of_parse_phandle(pdev->dev.of_node, "renesas,fcp", 0);
 810         if (fcp_node) {
 811                 vsp1->fcp = rcar_fcp_get(fcp_node);
 812                 of_node_put(fcp_node);
 813                 if (IS_ERR(vsp1->fcp)) {
 814                         dev_dbg(&pdev->dev, "FCP not found (%ld)\n",
 815                                 PTR_ERR(vsp1->fcp));
 816                         return PTR_ERR(vsp1->fcp);
 817                 }
 818
 819                 /*
 820                  * When the FCP is present, it handles all bus master accesses
 821                  * for the VSP and must thus be used in place of the VSP device
 822                  * to map DMA buffers.
 823                  */
 824                 vsp1->bus_master = rcar_fcp_get_device(vsp1->fcp);
 825         } else {
 826                 vsp1->bus_master = vsp1->dev;
 827         }
 828
 829         /* Configure device parameters based on the version register. */
 830         pm_runtime_enable(&pdev->dev);
 831
 832         ret = pm_runtime_get_sync(&pdev->dev);
 833         if (ret < 0)
 834                 goto done;
 835
 836         vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION);
 837         pm_runtime_put_sync(&pdev->dev);
 838
 839         for (i = 0; i < ARRAY_SIZE(vsp1_device_infos); ++i) {
 840                 if ((vsp1->version & VI6_IP_VERSION_MODEL_MASK) ==
 841                     vsp1_device_infos[i].version) {
 842                         vsp1->info = &vsp1_device_infos[i];
 843                         break;
 844                 }
 845         }
 846
 847         if (!vsp1->info) {
 848                 dev_err(&pdev->dev, "unsupported IP version 0x%08x\n",
 849                         vsp1->version);
 850                 ret = -ENXIO;
 851                 goto done;
 852         }
 853
 854         dev_dbg(&pdev->dev, "IP version 0x%08x\n", vsp1->version);
 855
 856         /* Instanciate entities */
 857         ret = vsp1_create_entities(vsp1);
 858         if (ret < 0) {
 859                 dev_err(&pdev->dev, "failed to create entities\n");
 860                 goto done;
 861         }
 862
 863 done:
 864         if (ret)
 865                 pm_runtime_disable(&pdev->dev);
 866
 867         return ret;
 868 }
 869
 870 static int vsp1_remove(struct platform_device *pdev)
 871 {
 872         struct vsp1_device *vsp1 = platform_get_drvdata(pdev);
 873
 874         vsp1_destroy_entities(vsp1);
 875         rcar_fcp_put(vsp1->fcp);
 876
 877         pm_runtime_disable(&pdev->dev);
 878
 879         return 0;
 880 }
 881
 882 static const struct of_device_id vsp1_of_match[] = {
 883         { .compatible = "renesas,vsp1" },
 884         { .compatible = "renesas,vsp2" },
 885         { },
 886 };
 887 MODULE_DEVICE_TABLE(of, vsp1_of_match);
 888
 889 static struct platform_driver vsp1_platform_driver = {
 890         .probe          = vsp1_probe,
 891         .remove         = vsp1_remove,
 892         .driver         = {
 893                 .name   = "vsp1",
 894                 .pm     = &vsp1_pm_ops,
 895                 .of_match_table = vsp1_of_match,
 896         },
 897 };
 898
 899 module_platform_driver(vsp1_platform_driver);
 900
 901 MODULE_ALIAS("vsp1");
 902 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
 903 MODULE_DESCRIPTION("Renesas VSP1 Driver");
 904 MODULE_LICENSE("GPL");