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_DFE) {
  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         mdev->hw_revision = vsp1->version;
 224         strlcpy(mdev->model, vsp1->info->model, sizeof(mdev->model));
 225         snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
 226                  dev_name(mdev->dev));
 227         media_device_init(mdev);
 228
 229         vsp1->media_ops.link_setup = vsp1_entity_link_setup;
 230         /* Don't perform link validation when the userspace API is disabled as
 231          * the pipeline is configured internally by the driver in that case, and
 232          * its configuration can thus be trusted.
 233          */
 234         if (vsp1->info->uapi)
 235                 vsp1->media_ops.link_validate = v4l2_subdev_link_validate;
 236
 237         vdev->mdev = mdev;
 238         ret = v4l2_device_register(vsp1->dev, vdev);
 239         if (ret < 0) {
 240                 dev_err(vsp1->dev, "V4L2 device registration failed (%d)\n",
 241                         ret);
 242                 goto done;
 243         }
 244
 245         /* Instantiate all the entities. */
 246         if (vsp1->info->features & VSP1_HAS_BRU) {
 247                 vsp1->bru = vsp1_bru_create(vsp1);
 248                 if (IS_ERR(vsp1->bru)) {
 249                         ret = PTR_ERR(vsp1->bru);
 250                         goto done;
 251                 }
 252
 253                 list_add_tail(&vsp1->bru->entity.list_dev, &vsp1->entities);
 254         }
 255
 256         if (vsp1->info->features & VSP1_HAS_CLU) {
 257                 vsp1->clu = vsp1_clu_create(vsp1);
 258                 if (IS_ERR(vsp1->clu)) {
 259                         ret = PTR_ERR(vsp1->clu);
 260                         goto done;
 261                 }
 262
 263                 list_add_tail(&vsp1->clu->entity.list_dev, &vsp1->entities);
 264         }
 265
 266         vsp1->hsi = vsp1_hsit_create(vsp1, true);
 267         if (IS_ERR(vsp1->hsi)) {
 268                 ret = PTR_ERR(vsp1->hsi);
 269                 goto done;
 270         }
 271
 272         list_add_tail(&vsp1->hsi->entity.list_dev, &vsp1->entities);
 273
 274         vsp1->hst = vsp1_hsit_create(vsp1, false);
 275         if (IS_ERR(vsp1->hst)) {
 276                 ret = PTR_ERR(vsp1->hst);
 277                 goto done;
 278         }
 279
 280         list_add_tail(&vsp1->hst->entity.list_dev, &vsp1->entities);
 281
 282         /* The LIF is only supported when used in conjunction with the DU, in
 283          * which case the userspace API is disabled. If the userspace API is
 284          * enabled skip the LIF, even when present.
 285          */
 286         if (vsp1->info->features & VSP1_HAS_LIF && !vsp1->info->uapi) {
 287                 vsp1->lif = vsp1_lif_create(vsp1);
 288                 if (IS_ERR(vsp1->lif)) {
 289                         ret = PTR_ERR(vsp1->lif);
 290                         goto done;
 291                 }
 292
 293                 list_add_tail(&vsp1->lif->entity.list_dev, &vsp1->entities);
 294         }
 295
 296         if (vsp1->info->features & VSP1_HAS_LUT) {
 297                 vsp1->lut = vsp1_lut_create(vsp1);
 298                 if (IS_ERR(vsp1->lut)) {
 299                         ret = PTR_ERR(vsp1->lut);
 300                         goto done;
 301                 }
 302
 303                 list_add_tail(&vsp1->lut->entity.list_dev, &vsp1->entities);
 304         }
 305
 306         for (i = 0; i < vsp1->info->rpf_count; ++i) {
 307                 struct vsp1_rwpf *rpf;
 308
 309                 rpf = vsp1_rpf_create(vsp1, i);
 310                 if (IS_ERR(rpf)) {
 311                         ret = PTR_ERR(rpf);
 312                         goto done;
 313                 }
 314
 315                 vsp1->rpf[i] = rpf;
 316                 list_add_tail(&rpf->entity.list_dev, &vsp1->entities);
 317
 318                 if (vsp1->info->uapi) {
 319                         struct vsp1_video *video = vsp1_video_create(vsp1, rpf);
 320
 321                         if (IS_ERR(video)) {
 322                                 ret = PTR_ERR(video);
 323                                 goto done;
 324                         }
 325
 326                         list_add_tail(&video->list, &vsp1->videos);
 327                 }
 328         }
 329
 330         if (vsp1->info->features & VSP1_HAS_SRU) {
 331                 vsp1->sru = vsp1_sru_create(vsp1);
 332                 if (IS_ERR(vsp1->sru)) {
 333                         ret = PTR_ERR(vsp1->sru);
 334                         goto done;
 335                 }
 336
 337                 list_add_tail(&vsp1->sru->entity.list_dev, &vsp1->entities);
 338         }
 339
 340         for (i = 0; i < vsp1->info->uds_count; ++i) {
 341                 struct vsp1_uds *uds;
 342
 343                 uds = vsp1_uds_create(vsp1, i);
 344                 if (IS_ERR(uds)) {
 345                         ret = PTR_ERR(uds);
 346                         goto done;
 347                 }
 348
 349                 vsp1->uds[i] = uds;
 350                 list_add_tail(&uds->entity.list_dev, &vsp1->entities);
 351         }
 352
 353         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 354                 struct vsp1_rwpf *wpf;
 355
 356                 wpf = vsp1_wpf_create(vsp1, i);
 357                 if (IS_ERR(wpf)) {
 358                         ret = PTR_ERR(wpf);
 359                         goto done;
 360                 }
 361
 362                 vsp1->wpf[i] = wpf;
 363                 list_add_tail(&wpf->entity.list_dev, &vsp1->entities);
 364
 365                 if (vsp1->info->uapi) {
 366                         struct vsp1_video *video = vsp1_video_create(vsp1, wpf);
 367
 368                         if (IS_ERR(video)) {
 369                                 ret = PTR_ERR(video);
 370                                 goto done;
 371                         }
 372
 373                         list_add_tail(&video->list, &vsp1->videos);
 374                         wpf->entity.sink = &video->video.entity;
 375                 }
 376         }
 377
 378         /* Register all subdevs. */
 379         list_for_each_entry(entity, &vsp1->entities, list_dev) {
 380                 ret = v4l2_device_register_subdev(&vsp1->v4l2_dev,
 381                                                   &entity->subdev);
 382                 if (ret < 0)
 383                         goto done;
 384         }
 385
 386         /* Create links. */
 387         if (vsp1->info->uapi)
 388                 ret = vsp1_uapi_create_links(vsp1);
 389         else
 390                 ret = vsp1_drm_create_links(vsp1);
 391         if (ret < 0)
 392                 goto done;
 393
 394         /* Register subdev nodes if the userspace API is enabled or initialize
 395          * the DRM pipeline otherwise.
 396          */
 397         if (vsp1->info->uapi) {
 398                 ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
 399                 if (ret < 0)
 400                         goto done;
 401
 402                 ret = media_device_register(mdev);
 403         } else {
 404                 ret = vsp1_drm_init(vsp1);
 405         }
 406
 407 done:
 408         if (ret < 0)
 409                 vsp1_destroy_entities(vsp1);
 410
 411         return ret;
 412 }
 413
 414 int vsp1_reset_wpf(struct vsp1_device *vsp1, unsigned int index)
 415 {
 416         unsigned int timeout;
 417         u32 status;
 418
 419         status = vsp1_read(vsp1, VI6_STATUS);
 420         if (!(status & VI6_STATUS_SYS_ACT(index)))
 421                 return 0;
 422
 423         vsp1_write(vsp1, VI6_SRESET, VI6_SRESET_SRTS(index));
 424         for (timeout = 10; timeout > 0; --timeout) {
 425                 status = vsp1_read(vsp1, VI6_STATUS);
 426                 if (!(status & VI6_STATUS_SYS_ACT(index)))
 427                         break;
 428
 429                 usleep_range(1000, 2000);
 430         }
 431
 432         if (!timeout) {
 433                 dev_err(vsp1->dev, "failed to reset wpf.%u\n", index);
 434                 return -ETIMEDOUT;
 435         }
 436
 437         return 0;
 438 }
 439
 440 static int vsp1_device_init(struct vsp1_device *vsp1)
 441 {
 442         unsigned int i;
 443         int ret;
 444
 445         /* Reset any channel that might be running. */
 446         for (i = 0; i < vsp1->info->wpf_count; ++i) {
 447                 ret = vsp1_reset_wpf(vsp1, i);
 448                 if (ret < 0)
 449                         return ret;
 450         }
 451
 452         vsp1_write(vsp1, VI6_CLK_DCSWT, (8 << VI6_CLK_DCSWT_CSTPW_SHIFT) |
 453                    (8 << VI6_CLK_DCSWT_CSTRW_SHIFT));
 454
 455         for (i = 0; i < vsp1->info->rpf_count; ++i)
 456                 vsp1_write(vsp1, VI6_DPR_RPF_ROUTE(i), VI6_DPR_NODE_UNUSED);
 457
 458         for (i = 0; i < vsp1->info->uds_count; ++i)
 459                 vsp1_write(vsp1, VI6_DPR_UDS_ROUTE(i), VI6_DPR_NODE_UNUSED);
 460
 461         vsp1_write(vsp1, VI6_DPR_SRU_ROUTE, VI6_DPR_NODE_UNUSED);
 462         vsp1_write(vsp1, VI6_DPR_LUT_ROUTE, VI6_DPR_NODE_UNUSED);
 463         vsp1_write(vsp1, VI6_DPR_CLU_ROUTE, VI6_DPR_NODE_UNUSED);
 464         vsp1_write(vsp1, VI6_DPR_HST_ROUTE, VI6_DPR_NODE_UNUSED);
 465         vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED);
 466         vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED);
 467
 468         vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
 469                    (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
 470         vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) |
 471                    (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));
 472
 473         vsp1_dlm_setup(vsp1);
 474
 475         return 0;
 476 }
 477
 478 /*
 479  * vsp1_device_get - Acquire the VSP1 device
 480  *
 481  * Make sure the device is not suspended and initialize it if needed.
 482  *
 483  * Return 0 on success or a negative error code otherwise.
 484  */
 485 int vsp1_device_get(struct vsp1_device *vsp1)
 486 {
 487         int ret;
 488
 489         ret = pm_runtime_get_sync(vsp1->dev);
 490         return ret < 0 ? ret : 0;
 491 }
 492
 493 /*
 494  * vsp1_device_put - Release the VSP1 device
 495  *
 496  * Decrement the VSP1 reference count and cleanup the device if the last
 497  * reference is released.
 498  */
 499 void vsp1_device_put(struct vsp1_device *vsp1)
 500 {
 501         pm_runtime_put_sync(vsp1->dev);
 502 }
 503
 504 /* -----------------------------------------------------------------------------
 505  * Power Management
 506  */
 507
 508 static int __maybe_unused vsp1_pm_suspend(struct device *dev)
 509 {
 510         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 511
 512         /*
 513          * When used as part of a display pipeline, the VSP is stopped and
 514          * restarted explicitly by the DU.
 515          */
 516         if (!vsp1->drm)
 517                 vsp1_pipelines_suspend(vsp1);
 518
 519         pm_runtime_force_suspend(vsp1->dev);
 520
 521         return 0;
 522 }
 523
 524 static int __maybe_unused vsp1_pm_resume(struct device *dev)
 525 {
 526         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 527
 528         pm_runtime_force_resume(vsp1->dev);
 529
 530         /*
 531          * When used as part of a display pipeline, the VSP is stopped and
 532          * restarted explicitly by the DU.
 533          */
 534         if (!vsp1->drm)
 535                 vsp1_pipelines_resume(vsp1);
 536
 537         return 0;
 538 }
 539
 540 static int __maybe_unused vsp1_pm_runtime_suspend(struct device *dev)
 541 {
 542         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 543
 544         rcar_fcp_disable(vsp1->fcp);
 545
 546         return 0;
 547 }
 548
 549 static int __maybe_unused vsp1_pm_runtime_resume(struct device *dev)
 550 {
 551         struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 552         int ret;
 553
 554         if (vsp1->info) {
 555                 ret = vsp1_device_init(vsp1);
 556                 if (ret < 0)
 557                         return ret;
 558         }
 559
 560         return rcar_fcp_enable(vsp1->fcp);
 561 }
 562
 563 static const struct dev_pm_ops vsp1_pm_ops = {
 564         SET_SYSTEM_SLEEP_PM_OPS(vsp1_pm_suspend, vsp1_pm_resume)
 565         SET_RUNTIME_PM_OPS(vsp1_pm_runtime_suspend, vsp1_pm_runtime_resume, NULL)
 566 };
 567
 568 /* -----------------------------------------------------------------------------
 569  * Platform Driver
 570  */
 571
 572 static const struct vsp1_device_info vsp1_device_infos[] = {
 573         {
 574                 .version = VI6_IP_VERSION_MODEL_VSPS_H2,
 575                 .model = "VSP1-S",
 576                 .gen = 2,
 577                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 578                           | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 579                 .rpf_count = 5,
 580                 .uds_count = 3,
 581                 .wpf_count = 4,
 582                 .num_bru_inputs = 4,
 583                 .uapi = true,
 584         }, {
 585                 .version = VI6_IP_VERSION_MODEL_VSPR_H2,
 586                 .model = "VSP1-R",
 587                 .gen = 2,
 588                 .features = VSP1_HAS_BRU | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 589                 .rpf_count = 5,
 590                 .uds_count = 3,
 591                 .wpf_count = 4,
 592                 .num_bru_inputs = 4,
 593                 .uapi = true,
 594         }, {
 595                 .version = VI6_IP_VERSION_MODEL_VSPD_GEN2,
 596                 .model = "VSP1-D",
 597                 .gen = 2,
 598                 .features = VSP1_HAS_BRU | VSP1_HAS_LIF | VSP1_HAS_LUT,
 599                 .rpf_count = 4,
 600                 .uds_count = 1,
 601                 .wpf_count = 1,
 602                 .num_bru_inputs = 4,
 603                 .uapi = true,
 604         }, {
 605                 .version = VI6_IP_VERSION_MODEL_VSPS_M2,
 606                 .model = "VSP1-S",
 607                 .gen = 2,
 608                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 609                           | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 610                 .rpf_count = 5,
 611                 .uds_count = 1,
 612                 .wpf_count = 4,
 613                 .num_bru_inputs = 4,
 614                 .uapi = true,
 615         }, {
 616                 .version = VI6_IP_VERSION_MODEL_VSPS_V2H,
 617                 .model = "VSP1V-S",
 618                 .gen = 2,
 619                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 620                           | VSP1_HAS_SRU | VSP1_HAS_WPF_VFLIP,
 621                 .rpf_count = 4,
 622                 .uds_count = 1,
 623                 .wpf_count = 4,
 624                 .num_bru_inputs = 4,
 625                 .uapi = true,
 626         }, {
 627                 .version = VI6_IP_VERSION_MODEL_VSPD_V2H,
 628                 .model = "VSP1V-D",
 629                 .gen = 2,
 630                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 631                           | VSP1_HAS_LIF,
 632                 .rpf_count = 4,
 633                 .uds_count = 1,
 634                 .wpf_count = 1,
 635                 .num_bru_inputs = 4,
 636                 .uapi = true,
 637         }, {
 638                 .version = VI6_IP_VERSION_MODEL_VSPI_GEN3,
 639                 .model = "VSP2-I",
 640                 .gen = 3,
 641                 .features = VSP1_HAS_CLU | VSP1_HAS_LUT | VSP1_HAS_SRU
 642                           | VSP1_HAS_WPF_HFLIP | VSP1_HAS_WPF_VFLIP,
 643                 .rpf_count = 1,
 644                 .uds_count = 1,
 645                 .wpf_count = 1,
 646                 .uapi = true,
 647         }, {
 648                 .version = VI6_IP_VERSION_MODEL_VSPBD_GEN3,
 649                 .model = "VSP2-BD",
 650                 .gen = 3,
 651                 .features = VSP1_HAS_BRU | VSP1_HAS_WPF_VFLIP,
 652                 .rpf_count = 5,
 653                 .wpf_count = 1,
 654                 .num_bru_inputs = 5,
 655                 .uapi = true,
 656         }, {
 657                 .version = VI6_IP_VERSION_MODEL_VSPBC_GEN3,
 658                 .model = "VSP2-BC",
 659                 .gen = 3,
 660                 .features = VSP1_HAS_BRU | VSP1_HAS_CLU | VSP1_HAS_LUT
 661                           | VSP1_HAS_WPF_VFLIP,
 662                 .rpf_count = 5,
 663                 .wpf_count = 1,
 664                 .num_bru_inputs = 5,
 665                 .uapi = true,
 666         }, {
 667                 .version = VI6_IP_VERSION_MODEL_VSPD_GEN3,
 668                 .model = "VSP2-D",
 669                 .gen = 3,
 670                 .features = VSP1_HAS_BRU | VSP1_HAS_LIF | VSP1_HAS_WPF_VFLIP,
 671                 .rpf_count = 5,
 672                 .wpf_count = 2,
 673                 .num_bru_inputs = 5,
 674         },
 675 };
 676
 677 static int vsp1_probe(struct platform_device *pdev)
 678 {
 679         struct vsp1_device *vsp1;
 680         struct device_node *fcp_node;
 681         struct resource *irq;
 682         struct resource *io;
 683         unsigned int i;
 684         int ret;
 685
 686         vsp1 = devm_kzalloc(&pdev->dev, sizeof(*vsp1), GFP_KERNEL);
 687         if (vsp1 == NULL)
 688                 return -ENOMEM;
 689
 690         vsp1->dev = &pdev->dev;
 691         INIT_LIST_HEAD(&vsp1->entities);
 692         INIT_LIST_HEAD(&vsp1->videos);
 693
 694         platform_set_drvdata(pdev, vsp1);
 695
 696         /* I/O and IRQ resources (clock managed by the clock PM domain) */
 697         io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 698         vsp1->mmio = devm_ioremap_resource(&pdev->dev, io);
 699         if (IS_ERR(vsp1->mmio))
 700                 return PTR_ERR(vsp1->mmio);
 701
 702         irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 703         if (!irq) {
 704                 dev_err(&pdev->dev, "missing IRQ\n");
 705                 return -EINVAL;
 706         }
 707
 708         ret = devm_request_irq(&pdev->dev, irq->start, vsp1_irq_handler,
 709                               IRQF_SHARED, dev_name(&pdev->dev), vsp1);
 710         if (ret < 0) {
 711                 dev_err(&pdev->dev, "failed to request IRQ\n");
 712                 return ret;
 713         }
 714
 715         /* FCP (optional) */
 716         fcp_node = of_parse_phandle(pdev->dev.of_node, "renesas,fcp", 0);
 717         if (fcp_node) {
 718                 vsp1->fcp = rcar_fcp_get(fcp_node);
 719                 of_node_put(fcp_node);
 720                 if (IS_ERR(vsp1->fcp)) {
 721                         dev_dbg(&pdev->dev, "FCP not found (%ld)\n",
 722                                 PTR_ERR(vsp1->fcp));
 723                         return PTR_ERR(vsp1->fcp);
 724                 }
 725         }
 726
 727         /* Configure device parameters based on the version register. */
 728         pm_runtime_enable(&pdev->dev);
 729
 730         ret = pm_runtime_get_sync(&pdev->dev);
 731         if (ret < 0)
 732                 goto done;
 733
 734         vsp1->version = vsp1_read(vsp1, VI6_IP_VERSION);
 735         pm_runtime_put_sync(&pdev->dev);
 736
 737         for (i = 0; i < ARRAY_SIZE(vsp1_device_infos); ++i) {
 738                 if ((vsp1->version & VI6_IP_VERSION_MODEL_MASK) ==
 739                     vsp1_device_infos[i].version) {
 740                         vsp1->info = &vsp1_device_infos[i];
 741                         break;
 742                 }
 743         }
 744
 745         if (!vsp1->info) {
 746                 dev_err(&pdev->dev, "unsupported IP version 0x%08x\n",
 747                         vsp1->version);
 748                 ret = -ENXIO;
 749                 goto done;
 750         }
 751
 752         dev_dbg(&pdev->dev, "IP version 0x%08x\n", vsp1->version);
 753
 754         /* Instanciate entities */
 755         ret = vsp1_create_entities(vsp1);
 756         if (ret < 0) {
 757                 dev_err(&pdev->dev, "failed to create entities\n");
 758                 goto done;
 759         }
 760
 761 done:
 762         if (ret)
 763                 pm_runtime_disable(&pdev->dev);
 764
 765         return ret;
 766 }
 767
 768 static int vsp1_remove(struct platform_device *pdev)
 769 {
 770         struct vsp1_device *vsp1 = platform_get_drvdata(pdev);
 771
 772         vsp1_destroy_entities(vsp1);
 773         rcar_fcp_put(vsp1->fcp);
 774
 775         pm_runtime_disable(&pdev->dev);
 776
 777         return 0;
 778 }
 779
 780 static const struct of_device_id vsp1_of_match[] = {
 781         { .compatible = "renesas,vsp1" },
 782         { .compatible = "renesas,vsp2" },
 783         { },
 784 };
 785
 786 static struct platform_driver vsp1_platform_driver = {
 787         .probe          = vsp1_probe,
 788         .remove         = vsp1_remove,
 789         .driver         = {
 790                 .name   = "vsp1",
 791                 .pm     = &vsp1_pm_ops,
 792                 .of_match_table = vsp1_of_match,
 793         },
 794 };
 795
 796 module_platform_driver(vsp1_platform_driver);
 797
 798 MODULE_ALIAS("vsp1");
 799 MODULE_AUTHOR("Laurent Pinchart <laurent.pinchart@ideasonboard.com>");
 800 MODULE_DESCRIPTION("Renesas VSP1 Driver");
 801 MODULE_LICENSE("GPL");