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_hsit.h"
  34 #include "vsp1_lif.h"
  35 #include "vsp1_lut.h"
  36 #include "vsp1_pipe.h"
  37 #include "vsp1_rwpf.h"
  38 #include "vsp1_sru.h"
  39 #include "vsp1_uds.h"
  40 #include "vsp1_video.h"
  41
  42 /* -----------------------------------------------------------------------------
  43  * Interrupt Handling
  44  */
  45
  46 static irqreturn_t vsp1_irq_handler(int irq, void *data)
  47 {
  48         u32 mask = VI6_WFP_IRQ_STA_DFE | VI6_WFP_IRQ_STA_FRE;
  49         struct vsp1_device *vsp1 = data;
  50         irqreturn_t ret = IRQ_NONE;
  51         unsigned int i;
  52         u32 status;
  53
  54         for (i = 0; i < vsp1->info->wpf_count; ++i) {
  55                 struct vsp1_rwpf *wpf = vsp1->wpf[i];
  56
  57                 if (wpf == NULL)
  58                         continue;
  59
  60                 status = vsp1_read(vsp1, VI6_WPF_IRQ_STA(i));
  61                 vsp1_write(vsp1, VI6_WPF_IRQ_STA(i), ~status & mask);
  62
  63                 if (status & VI6_WFP_IRQ_STA_FRE) {
  64                         vsp1_pipeline_frame_end(wpf->pipe);
  65                         ret = IRQ_HANDLED;
  66                 }
  67         }
  68
  69         status = vsp1_read(vsp1, VI6_DISP_IRQ_STA);
  70         vsp1_write(vsp1, VI6_DISP_IRQ_STA, ~status & VI6_DISP_IRQ_STA_DST);
  71
  72         if (status & VI6_DISP_IRQ_STA_DST) {
  73                 vsp1_drm_display_start(vsp1);
  74                 ret = IRQ_HANDLED;
  75         }
  76
  77         return ret;
  78 }
  79
  80 /* -----------------------------------------------------------------------------
  81  * Entities
  82  */
  83
  84 /*
  85  * vsp1_create_sink_links - Create links from all sources to the given sink
  86  *
  87  * This function creates media links from all valid sources to the given sink
  88  * pad. Links that would be invalid according to the VSP1 hardware capabilities
  89  * are skipped. Those include all links
  90  *
  91  * - from a UDS to a UDS (UDS entities can't be chained)
  92  * - from an entity to itself (no loops are allowed)
  93  */
  94 static int vsp1_create_sink_links(struct vsp1_device *vsp1,
  95                                   struct vsp1_entity *sink)
  96 {
  97         struct media_entity *entity = &sink->subdev.entity;
  98         struct vsp1_entity *source;
  99         unsigned int pad;
 100         int ret;
 101
 102         list_for_each_entry(source, &vsp1->entities, list_dev) {
 103                 u32 flags;
 104
 105                 if (source->type == sink->type)
 106                         continue;
 107
 108                 if (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 = entity;
 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->lif) {
 152                 ret = media_create_pad_link(&vsp1->wpf[0]->entity.subdev.entity,
 153                                             RWPF_PAD_SOURCE,
 154                                             &vsp1->lif->entity.subdev.entity,
 155                                             LIF_PAD_SINK, 0);
 156                 if (ret < 0)
 157                         return ret;
 158         }
 159
 160         for (i = 0; i < vsp1->info->rpf_count; ++i) {
 161                 struct vsp1_rwpf *rpf = vsp1->rpf[i];
 162
 163                 ret = media_create_pad_link(&rpf->video->video.entity, 0,
 164                                             &rpf->entity.subdev.entity,
 165                                             RWPF_PAD_SINK,
 166                                             MEDIA_LNK_FL_ENABLED |
 167                                             MEDIA_LNK_FL_IMMUTABLE);
 168                 if (ret < 0)
 169                         return ret;
 170         }
 171
 172         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 173                 /* Connect the video device to the WPF. All connections are
 174                  * immutable.
 175                  */
 176                 struct vsp1_rwpf *wpf = vsp1->wpf[i];
 177
 178                 ret = media_create_pad_link(&wpf->entity.subdev.entity,
 179                                             RWPF_PAD_SOURCE,
 180                                             &wpf->video->video.entity, 0,
 181                                             MEDIA_LNK_FL_IMMUTABLE |
 182                                             MEDIA_LNK_FL_ENABLED);
 183                 if (ret < 0)
 184                         return ret;
 185         }
 186
 187         return 0;
 188 }
 189
 190 static void vsp1_destroy_entities(struct vsp1_device *vsp1)
 191 {
 192         struct vsp1_entity *entity, *_entity;
 193         struct vsp1_video *video, *_video;
 194
 195         list_for_each_entry_safe(entity, _entity, &vsp1->entities, list_dev) {
 196                 list_del(&entity->list_dev);
 197                 vsp1_entity_destroy(entity);
 198         }
 199
 200         list_for_each_entry_safe(video, _video, &vsp1->videos, list) {
 201                 list_del(&video->list);
 202                 vsp1_video_cleanup(video);
 203         }
 204
 205         v4l2_device_unregister(&vsp1->v4l2_dev);
 206         if (vsp1->info->uapi)
 207                 media_device_unregister(&vsp1->media_dev);
 208         media_device_cleanup(&vsp1->media_dev);
 209
 210         if (!vsp1->info->uapi)
 211                 vsp1_drm_cleanup(vsp1);
 212 }
 213
 214 static int vsp1_create_entities(struct vsp1_device *vsp1)
 215 {
 216         struct media_device *mdev = &vsp1->media_dev;
 217         struct v4l2_device *vdev = &vsp1->v4l2_dev;
 218         struct vsp1_entity *entity;
 219         unsigned int i;
 220         int ret;
 221
 222         mdev->dev = vsp1->dev;
 223         strlcpy(mdev->model, "VSP1", sizeof(mdev->model));
 224         snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
 225                  dev_name(mdev->dev));
 226         media_device_init(mdev);
 227
 228         vsp1->media_ops.link_setup = vsp1_entity_link_setup;
 229         /* Don't perform link validation when the userspace API is disabled as
 230          * the pipeline is configured internally by the driver in that case, and
 231          * its configuration can thus be trusted.
 232          */
 233         if (vsp1->info->uapi)
 234                 vsp1->media_ops.link_validate = v4l2_subdev_link_validate;
 235
 236         vdev->mdev = mdev;
 237         ret = v4l2_device_register(vsp1->dev, vdev);
 238         if (ret < 0) {
 239                 dev_err(vsp1->dev, "V4L2 device registration failed (%d)\n",
 240                         ret);
 241                 goto done;
 242         }
 243
 244         /* Instantiate all the entities. */
 245         if (vsp1->info->features & VSP1_HAS_BRU) {
 246                 vsp1->bru = vsp1_bru_create(vsp1);
 247                 if (IS_ERR(vsp1->bru)) {
 248                         ret = PTR_ERR(vsp1->bru);
 249                         goto done;
 250                 }
 251
 252                 list_add_tail(&vsp1->bru->entity.list_dev, &vsp1->entities);
 253         }
 254
 255         if (vsp1->info->features & VSP1_HAS_CLU) {
 256                 vsp1->clu = vsp1_clu_create(vsp1);
 257                 if (IS_ERR(vsp1->clu)) {
 258                         ret = PTR_ERR(vsp1->clu);
 259                         goto done;
 260                 }
 261
 262                 list_add_tail(&vsp1->clu->entity.list_dev, &vsp1->entities);
 263         }
 264
 265         vsp1->hsi = vsp1_hsit_create(vsp1, true);
 266         if (IS_ERR(vsp1->hsi)) {
 267                 ret = PTR_ERR(vsp1->hsi);
 268                 goto done;
 269         }
 270
 271         list_add_tail(&vsp1->hsi->entity.list_dev, &vsp1->entities);
 272
 273         vsp1->hst = vsp1_hsit_create(vsp1, false);
 274         if (IS_ERR(vsp1->hst)) {
 275                 ret = PTR_ERR(vsp1->hst);
 276                 goto done;
 277         }
 278
 279         list_add_tail(&vsp1->hst->entity.list_dev, &vsp1->entities);
 280
 281         /* The LIF is only supported when used in conjunction with the DU, in
 282          * which case the userspace API is disabled. If the userspace API is
 283          * enabled skip the LIF, even when present.
 284          */
 285         if (vsp1->info->features & VSP1_HAS_LIF && !vsp1->info->uapi) {
 286                 vsp1->lif = vsp1_lif_create(vsp1);
 287                 if (IS_ERR(vsp1->lif)) {
 288                         ret = PTR_ERR(vsp1->lif);
 289                         goto done;
 290                 }
 291
 292                 list_add_tail(&vsp1->lif->entity.list_dev, &vsp1->entities);
 293         }
 294
 295         if (vsp1->info->features & VSP1_HAS_LUT) {
 296                 vsp1->lut = vsp1_lut_create(vsp1);
 297                 if (IS_ERR(vsp1->lut)) {
 298                         ret = PTR_ERR(vsp1->lut);
 299                         goto done;
 300                 }
 301
 302                 list_add_tail(&vsp1->lut->entity.list_dev, &vsp1->entities);
 303         }
 304
 305         for (i = 0; i < vsp1->info->rpf_count; ++i) {
 306                 struct vsp1_rwpf *rpf;
 307
 308                 rpf = vsp1_rpf_create(vsp1, i);
 309                 if (IS_ERR(rpf)) {
 310                         ret = PTR_ERR(rpf);
 311                         goto done;
 312                 }
 313
 314                 vsp1->rpf[i] = rpf;
 315                 list_add_tail(&rpf->entity.list_dev, &vsp1->entities);
 316
 317                 if (vsp1->info->uapi) {
 318                         struct vsp1_video *video = vsp1_video_create(vsp1, rpf);
 319
 320                         if (IS_ERR(video)) {
 321                                 ret = PTR_ERR(video);
 322                                 goto done;
 323                         }
 324
 325                         list_add_tail(&video->list, &vsp1->videos);
 326                 }
 327         }
 328
 329         if (vsp1->info->features & VSP1_HAS_SRU) {
 330                 vsp1->sru = vsp1_sru_create(vsp1);
 331                 if (IS_ERR(vsp1->sru)) {
 332                         ret = PTR_ERR(vsp1->sru);
 333                         goto done;
 334                 }
 335
 336                 list_add_tail(&vsp1->sru->entity.list_dev, &vsp1->entities);
 337         }
 338
 339         for (i = 0; i < vsp1->info->uds_count; ++i) {
 340                 struct vsp1_uds *uds;
 341
 342                 uds = vsp1_uds_create(vsp1, i);
 343                 if (IS_ERR(uds)) {
 344                         ret = PTR_ERR(uds);
 345                         goto done;
 346                 }
 347
 348                 vsp1->uds[i] = uds;
 349                 list_add_tail(&uds->entity.list_dev, &vsp1->entities);
 350         }
 351
 352         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 353                 struct vsp1_rwpf *wpf;
 354
 355                 wpf = vsp1_wpf_create(vsp1, i);
 356                 if (IS_ERR(wpf)) {
 357                         ret = PTR_ERR(wpf);
 358                         goto done;
 359                 }
 360
 361                 vsp1->wpf[i] = wpf;
 362                 list_add_tail(&wpf->entity.list_dev, &vsp1->entities);
 363
 364                 if (vsp1->info->uapi) {
 365                         struct vsp1_video *video = vsp1_video_create(vsp1, wpf);
 366
 367                         if (IS_ERR(video)) {
 368                                 ret = PTR_ERR(video);
 369                                 goto done;
 370                         }
 371
 372                         list_add_tail(&video->list, &vsp1->videos);
 373                         wpf->entity.sink = &video->video.entity;
 374                 }
 375         }
 376
 377         /* Register all subdevs. */
 378         list_for_each_entry(entity, &vsp1->entities, list_dev) {
 379                 ret = v4l2_device_register_subdev(&vsp1->v4l2_dev,
 380                                                   &entity->subdev);
 381                 if (ret < 0)
 382                         goto done;
 383         }
 384
 385         /* Create links. */
 386         if (vsp1->info->uapi)
 387                 ret = vsp1_uapi_create_links(vsp1);
 388         else
 389                 ret = vsp1_drm_create_links(vsp1);
 390         if (ret < 0)
 391                 goto done;
 392
 393         /* Register subdev nodes if the userspace API is enabled or initialize
 394          * the DRM pipeline otherwise.
 395          */
 396         if (vsp1->info->uapi) {
 397                 ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
 398                 if (ret < 0)
 399                         goto done;
 400
 401                 ret = media_device_register(mdev);
 402         } else {
 403                 ret = vsp1_drm_init(vsp1);
 404         }
 405
 406 done:
 407         if (ret < 0)
 408                 vsp1_destroy_entities(vsp1);
 409
 410         return ret;
 411 }
 412
 413 int vsp1_reset_wpf(struct vsp1_device *vsp1, unsigned int index)
 414 {
 415         unsigned int timeout;
 416         u32 status;
 417
 418         status = vsp1_read(vsp1, VI6_STATUS);
 419         if (!(status & VI6_STATUS_SYS_ACT(index)))
 420                 return 0;
 421
 422         vsp1_write(vsp1, VI6_SRESET, VI6_SRESET_SRTS(index));
 423         for (timeout = 10; timeout > 0; --timeout) {
 424                 status = vsp1_read(vsp1, VI6_STATUS);
 425                 if (!(status & VI6_STATUS_SYS_ACT(index)))
 426                         break;
 427
 428                 usleep_range(1000, 2000);
 429         }
 430
 431         if (!timeout) {
 432                 dev_err(vsp1->dev, "failed to reset wpf.%u\n", index);
 433                 return -ETIMEDOUT;
 434         }
 435
 436         return 0;
 437 }
 438
 439 static int vsp1_device_init(struct vsp1_device *vsp1)
 440 {
 441         unsigned int i;
 442         int ret;
 443
 444         /* Reset any channel that might be running. */
 445         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 446                 ret = vsp1_reset_wpf(vsp1, i);
 447                 if (ret < 0)
 448                         return ret;
 449         }
 450
 451         vsp1_write(vsp1, VI6_CLK_DCSWT, (8 << VI6_CLK_DCSWT_CSTPW_SHIFT) |
 452                    (8 << VI6_CLK_DCSWT_CSTRW_SHIFT));
 453
 454         for (i = 0; i < vsp1->info->rpf_count; ++i)
 455                 vsp1_write(vsp1, VI6_DPR_RPF_ROUTE(i), VI6_DPR_NODE_UNUSED);
 456
 457         for (i = 0; i < vsp1->info->uds_count; ++i)
 458                 vsp1_write(vsp1, VI6_DPR_UDS_ROUTE(i), VI6_DPR_NODE_UNUSED);
 459
 460         vsp1_write(vsp1, VI6_DPR_SRU_ROUTE, VI6_DPR_NODE_UNUSED);
 461         vsp1_write(vsp1, VI6_DPR_LUT_ROUTE, VI6_DPR_NODE_UNUSED);
 462         vsp1_write(vsp1, VI6_DPR_CLU_ROUTE, VI6_DPR_NODE_UNUSED);
 463         vsp1_write(vsp1, VI6_DPR_HST_ROUTE, VI6_DPR_NODE_UNUSED);
 464         vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED);
 465         vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED);
 466
 467         vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
 468                    (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
 469         vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
 470                    (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
 471
 472         vsp1_dlm_setup(vsp1);
 473
 474         return 0;
 475 }
 476
 477 /*
 478  * vsp1_device_get - Acquire the VSP1 device
 479  *
 480  * Make sure the device is not suspended and initialize it if needed.
 481  *
 482  * Return 0 on success or a negative error code otherwise.
 483  */
 484 int vsp1_device_get(struct vsp1_device *vsp1)
 485 {
 486         int ret;
 487
 488         ret = pm_runtime_get_sync(vsp1->dev);
 489         return ret < 0 ? ret : 0;
 490 }
 491
 492 /*
 493  * vsp1_device_put - Release the VSP1 device
 494  *
 495  * Decrement the VSP1 reference count and cleanup the device if the last
 496  * reference is released.
 497  */
 498 void vsp1_device_put(struct vsp1_device *vsp1)
 499 {
 500         pm_runtime_put_sync(vsp1->dev);
 501 }
 502
 503 /* -----------------------------------------------------------------------------
 504  * Power Management
 505  */
 506
 507 static int __maybe_unused vsp1_pm_suspend(struct device *dev)
 508 {
 509         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 510
 511         vsp1_pipelines_suspend(vsp1);
 512         pm_runtime_force_suspend(vsp1->dev);
 513
 514         return 0;
 515 }
 516
 517 static int __maybe_unused vsp1_pm_resume(struct device *dev)
 518 {
 519         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 520
 521         pm_runtime_force_resume(vsp1->dev);
 522         vsp1_pipelines_resume(vsp1);
 523
 524         return 0;
 525 }
 526
 527 static int __maybe_unused vsp1_pm_runtime_suspend(struct device *dev)
 528 {
 529         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 530
 531         rcar_fcp_disable(vsp1->fcp);
 532
 533         return 0;
 534 }
 535
 536 static int __maybe_unused vsp1_pm_runtime_resume(struct device *dev)
 537 {
 538         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 539         int ret;
 540
 541         if (vsp1->info) {
 542                 ret = vsp1_device_init(vsp1);
 543                 if (ret < 0)
 544                         return ret;
 545         }
 546
 547         return rcar_fcp_enable(vsp1->fcp);
 548 }
 549
 550 static const struct dev_pm_ops vsp1_pm_ops = {
 551         SET_SYSTEM_SLEEP_PM_OPS(vsp1_pm_suspend, vsp1_pm_resume)
 552         SET_RUNTIME_PM_OPS(vsp1_pm_runtime_suspend, vsp1_pm_runtime_resume, NULL)
 553 };
 554
 555 /* -----------------------------------------------------------------------------
 556  * Platform Driver
 557  */
 558
 559 static const struct vsp1_device_info vsp1_device_infos[] = {
 560         {
 561                 .version = VI6_IP_VERSION_MODEL_VSPS_H2,
 562                 .gen = 2,
 563                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 564                           | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 565                 .rpf_count = 5,
 566                 .uds_count = 3,
 567                 .wpf_count = 4,
 568                 .num_bru_inputs = 4,
 569                 .uapi = true,
 570         }, {
 571                 .version = VI6_IP_VERSION_MODEL_VSPR_H2,
 572                 .gen = 2,
 573                 .features = VSP1_HAS_BRU | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 574                 .rpf_count = 5,
 575                 .uds_count = 3,
 576                 .wpf_count = 4,
 577                 .num_bru_inputs = 4,
 578                 .uapi = true,
 579         }, {
 580                 .version = VI6_IP_VERSION_MODEL_VSPD_GEN2,
 581                 .gen = 2,
 582                 .features = VSP1_HAS_BRU | VSP1_HAS_LIF | VSP1_HAS_LUT,
 583                 .rpf_count = 4,
 584                 .uds_count = 1,
 585                 .wpf_count = 1,
 586                 .num_bru_inputs = 4,
 587                 .uapi = true,
 588         }, {
 589                 .version = VI6_IP_VERSION_MODEL_VSPS_M2,
 590                 .gen = 2,
 591                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 592                           | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 593                 .rpf_count = 5,
 594                 .uds_count = 1,
 595                 .wpf_count = 4,
 596                 .num_bru_inputs = 4,
 597                 .uapi = true,
 598         }, {
 599                 .version = VI6_IP_VERSION_MODEL_VSPI_GEN3,
 600                 .gen = 3,
 601                 .features = VSP1_HAS_CLU | VSP1_HAS_LUT | VSP1_HAS_SRU
 602                           | VSP1_HAS_WPF_HFLIP | VSP1_HAS_WPF_VFLIP,
 603                 .rpf_count = 1,
 604                 .uds_count = 1,
 605                 .wpf_count = 1,
 606                 .uapi = true,
 607         }, {
 608                 .version = VI6_IP_VERSION_MODEL_VSPBD_GEN3,
 609                 .gen = 3,
 610                 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP,
 611                 .rpf_count = 5,
 612                 .wpf_count = 1,
 613                 .num_bru_inputs = 5,
 614                 .uapi = true,
 615         }, {
 616                 .version = VI6_IP_VERSION_MODEL_VSPBC_GEN3,
 617                 .gen = 3,
 618                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 619                           | VSP1_HAS_WPF_VFLIP,
 620                 .rpf_count = 5,
 621                 .wpf_count = 1,
 622                 .num_bru_inputs = 5,
 623                 .uapi = true,
 624         }, {
 625                 .version = VI6_IP_VERSION_MODEL_VSPD_GEN3,
 626                 .gen = 3,
 627                 .features = VSP1_HAS_BRU | VSP1_HAS_LIF | VSP1_HAS_WPF_VFLIP,
 628                 .rpf_count = 5,
 629                 .wpf_count = 2,
 630                 .num_bru_inputs = 5,
 631         },
 632 };
 633
 634 static int vsp1_probe(struct platform_device *pdev)
 635 {
 636         struct vsp1_device *vsp1;
 637         struct device_node *fcp_node;
 638         struct resource *irq;
 639         struct resource *io;
 640         unsigned int i;
 641         u32 version;
 642         int ret;
 643
 644         vsp1 = devm_kzalloc(&pdev->dev, sizeof(*vsp1), GFP_KERNEL);
 645         if (vsp1 == NULL)
 646                 return -ENOMEM;
 647
 648         vsp1->dev = &pdev->dev;
 649         INIT_LIST_HEAD(&vsp1->entities);
 650         INIT_LIST_HEAD(&vsp1->videos);
 651
 652         platform_set_drvdata(pdev, vsp1);
 653
 654         /* I/O and IRQ resources (clock managed by the clock PM domain) */
 655         io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 656         vsp1->mmio = devm_ioremap_resource(&pdev->dev, io);
 657         if (IS_ERR(vsp1->mmio))
 658                 return PTR_ERR(vsp1->mmio);
 659
 660         irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 661         if (!irq) {
 662                 dev_err(&pdev->dev, "missing IRQ\n");
 663                 return -EINVAL;
 664         }
 665
 666         ret = devm_request_irq(&pdev->dev, irq->start, vsp1_irq_handler,
 667                               IRQF_SHARED, dev_name(&pdev->dev), vsp1);
 668         if (ret < 0) {
 669                 dev_err(&pdev->dev, "failed to request IRQ\n");
 670                 return ret;
 671         }
 672
 673         /* FCP (optional) */
 674         fcp_node = of_parse_phandle(pdev->dev.of_node, "renesas,fcp", 0);
 675         if (fcp_node) {
 676                 vsp1->fcp = rcar_fcp_get(fcp_node);
 677                 of_node_put(fcp_node);
 678                 if (IS_ERR(vsp1->fcp)) {
 679                         dev_dbg(&pdev->dev, "FCP not found (%ld)\n",
 680                                 PTR_ERR(vsp1->fcp));
 681                         return PTR_ERR(vsp1->fcp);
 682                 }
 683         }
 684
 685         /* Configure device parameters based on the version register. */
 686         pm_runtime_enable(&pdev->dev);
 687
 688         ret = pm_runtime_get_sync(&pdev->dev);
 689         if (ret < 0)
 690                 goto done;
 691
 692         version = vsp1_read(vsp1, VI6_IP_VERSION);
 693         pm_runtime_put_sync(&pdev->dev);
 694
 695         for (i = 0; i < ARRAY_SIZE(vsp1_device_infos); ++i) {
 696                 if ((version & VI6_IP_VERSION_MODEL_MASK) ==
 697                     vsp1_device_infos[i].version) {
 698                         vsp1->info = &vsp1_device_infos[i];
 699                         break;
 700                 }
 701         }
 702
 703         if (!vsp1->info) {
 704                 dev_err(&pdev->dev, "unsupported IP version 0x%08x\n", version);
 705                 ret = -ENXIO;
 706                 goto done;
 707         }
 708
 709         dev_dbg(&pdev->dev, "IP version 0x%08x\n", version);
 710
 711         /* Instanciate entities */
 712         ret = vsp1_create_entities(vsp1);
 713         if (ret < 0) {
 714                 dev_err(&pdev->dev, "failed to create entities\n");
 715                 goto done;
 716         }
 717
 718 done:
 719         if (ret)
 720                 pm_runtime_disable(&pdev->dev);
 721
 722         return ret;
 723 }
 724
 725 static int vsp1_remove(struct platform_device *pdev)
 726 {
 727         struct vsp1_device *vsp1 = platform_get_drvdata(pdev);
 728
 729         vsp1_destroy_entities(vsp1);
 730         rcar_fcp_put(vsp1->fcp);
 731
 732         pm_runtime_disable(&pdev->dev);
 733
 734         return 0;
 735 }
 736
 737 static const struct of_device_id vsp1_of_match[] = {
 738         { .compatible = "renesas,vsp1" },
 739         { .compatible = "renesas,vsp2" },
 740         { },
 741 };
 742
 743 static struct platform_driver vsp1_platform_driver = {
 744         .probe          = vsp1_probe,
 745         .remove         = vsp1_remove,
 746         .driver         = {
 747                 .name   = "vsp1",
 748                 .pm     = &vsp1_pm_ops,
 749                 .of_match_table = vsp1_of_match,
 750         },
 751 };
 752
 753 module_platform_driver(vsp1_platform_driver);
 754
 755 MODULE_ALIAS("vsp1");
 756 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
 757 MODULE_DESCRIPTION("Renesas VSP1 Driver");
 758 MODULE_LICENSE("GPL");