drivers/staging/media/ipu3/ipu3-v4l2.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (C) 2018 Intel Corporation
   3
   4 #include <linux/module.h>
   5 #include <linux/pm_runtime.h>
   6
   7 #include <media/v4l2-event.h>
   8 #include <media/v4l2-ioctl.h>
   9
  10 #include "ipu3.h"
  11 #include "ipu3-dmamap.h"
  12
  13 /******************** v4l2_subdev_ops ********************/
  14
  15 #define IPU3_RUNNING_MODE_VIDEO         0
  16 #define IPU3_RUNNING_MODE_STILL         1
  17
  18 static int imgu_subdev_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
  19 {
  20         struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
  21                                                         struct imgu_v4l2_subdev,
  22                                                         subdev);
  23         struct imgu_device *imgu = v4l2_get_subdevdata(sd);
  24         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[imgu_sd->pipe];
  25         struct v4l2_rect try_crop = {
  26                 .top = 0,
  27                 .left = 0,
  28         };
  29         unsigned int i;
  30
  31         try_crop.width =
  32                 imgu_pipe->nodes[IMGU_NODE_IN].vdev_fmt.fmt.pix_mp.width;
  33         try_crop.height =
  34                 imgu_pipe->nodes[IMGU_NODE_IN].vdev_fmt.fmt.pix_mp.height;
  35
  36         /* Initialize try_fmt */
  37         for (i = 0; i < IMGU_NODE_NUM; i++) {
  38                 struct v4l2_mbus_framefmt *try_fmt =
  39                         v4l2_subdev_get_try_format(sd, fh->pad, i);
  40
  41                 try_fmt->width = try_crop.width;
  42                 try_fmt->height = try_crop.height;
  43                 try_fmt->code = imgu_pipe->nodes[i].pad_fmt.code;
  44                 try_fmt->field = V4L2_FIELD_NONE;
  45         }
  46
  47         *v4l2_subdev_get_try_crop(sd, fh->pad, IMGU_NODE_IN) = try_crop;
  48         *v4l2_subdev_get_try_compose(sd, fh->pad, IMGU_NODE_IN) = try_crop;
  49
  50         return 0;
  51 }
  52
  53 static int imgu_subdev_s_stream(struct v4l2_subdev *sd, int enable)
  54 {
  55         int i;
  56         unsigned int node;
  57         int r = 0;
  58         struct imgu_device *imgu = v4l2_get_subdevdata(sd);
  59         struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
  60                                                         struct imgu_v4l2_subdev,
  61                                                         subdev);
  62         unsigned int pipe = imgu_sd->pipe;
  63         struct device *dev = &imgu->pci_dev->dev;
  64         struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL };
  65         struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL };
  66         struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe];
  67         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
  68
  69         dev_dbg(dev, "%s %d for pipe %u", __func__, enable, pipe);
  70         /* grab ctrl after streamon and return after off */
  71         v4l2_ctrl_grab(imgu_sd->ctrl, enable);
  72
  73         if (!enable) {
  74                 imgu_sd->active = false;
  75                 return 0;
  76         }
  77
  78         for (i = 0; i < IMGU_NODE_NUM; i++)
  79                 imgu_pipe->queue_enabled[i] = imgu_pipe->nodes[i].enabled;
  80
  81         /* This is handled specially */
  82         imgu_pipe->queue_enabled[IPU3_CSS_QUEUE_PARAMS] = false;
  83
  84         /* Initialize CSS formats */
  85         for (i = 0; i < IPU3_CSS_QUEUES; i++) {
  86                 node = imgu_map_node(imgu, i);
  87                 /* No need to reconfig meta nodes */
  88                 if (node == IMGU_NODE_STAT_3A || node == IMGU_NODE_PARAMS)
  89                         continue;
  90                 fmts[i] = imgu_pipe->queue_enabled[node] ?
  91                         &imgu_pipe->nodes[node].vdev_fmt.fmt.pix_mp : NULL;
  92         }
  93
  94         /* Enable VF output only when VF queue requested by user */
  95         css_pipe->vf_output_en = false;
  96         if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
  97                 css_pipe->vf_output_en = true;
  98
  99         if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
 100                 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
 101         else
 102                 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
 103
 104         dev_dbg(dev, "IPU3 pipe %u pipe_id %u", pipe, css_pipe->pipe_id);
 105
 106         rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff;
 107         rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds;
 108         rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc;
 109
 110         r = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe);
 111         if (r) {
 112                 dev_err(dev, "failed to set initial formats pipe %u with (%d)",
 113                         pipe, r);
 114                 return r;
 115         }
 116
 117         imgu_sd->active = true;
 118
 119         return 0;
 120 }
 121
 122 static int imgu_subdev_get_fmt(struct v4l2_subdev *sd,
 123                                struct v4l2_subdev_pad_config *cfg,
 124                                struct v4l2_subdev_format *fmt)
 125 {
 126         struct imgu_device *imgu = v4l2_get_subdevdata(sd);
 127         struct v4l2_mbus_framefmt *mf;
 128         struct imgu_media_pipe *imgu_pipe;
 129         u32 pad = fmt->pad;
 130         struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
 131                                                         struct imgu_v4l2_subdev,
 132                                                         subdev);
 133         unsigned int pipe = imgu_sd->pipe;
 134
 135         imgu_pipe = &imgu->imgu_pipe[pipe];
 136         if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 137                 fmt->format = imgu_pipe->nodes[pad].pad_fmt;
 138         } else {
 139                 mf = v4l2_subdev_get_try_format(sd, cfg, pad);
 140                 fmt->format = *mf;
 141         }
 142
 143         return 0;
 144 }
 145
 146 static int imgu_subdev_set_fmt(struct v4l2_subdev *sd,
 147                                struct v4l2_subdev_pad_config *cfg,
 148                                struct v4l2_subdev_format *fmt)
 149 {
 150         struct imgu_media_pipe *imgu_pipe;
 151         struct imgu_device *imgu = v4l2_get_subdevdata(sd);
 152         struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
 153                                                         struct imgu_v4l2_subdev,
 154                                                         subdev);
 155         struct v4l2_mbus_framefmt *mf;
 156         u32 pad = fmt->pad;
 157         unsigned int pipe = imgu_sd->pipe;
 158
 159         dev_dbg(&imgu->pci_dev->dev, "set subdev %u pad %u fmt to [%ux%u]",
 160                 pipe, pad, fmt->format.width, fmt->format.height);
 161
 162         imgu_pipe = &imgu->imgu_pipe[pipe];
 163         if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
 164                 mf = v4l2_subdev_get_try_format(sd, cfg, pad);
 165         else
 166                 mf = &imgu_pipe->nodes[pad].pad_fmt;
 167
 168         fmt->format.code = mf->code;
 169         /* Clamp the w and h based on the hardware capabilities */
 170         if (imgu_sd->subdev_pads[pad].flags & MEDIA_PAD_FL_SOURCE) {
 171                 fmt->format.width = clamp(fmt->format.width,
 172                                           IPU3_OUTPUT_MIN_WIDTH,
 173                                           IPU3_OUTPUT_MAX_WIDTH);
 174                 fmt->format.height = clamp(fmt->format.height,
 175                                            IPU3_OUTPUT_MIN_HEIGHT,
 176                                            IPU3_OUTPUT_MAX_HEIGHT);
 177         } else {
 178                 fmt->format.width = clamp(fmt->format.width,
 179                                           IPU3_INPUT_MIN_WIDTH,
 180                                           IPU3_INPUT_MAX_WIDTH);
 181                 fmt->format.height = clamp(fmt->format.height,
 182                                            IPU3_INPUT_MIN_HEIGHT,
 183                                            IPU3_INPUT_MAX_HEIGHT);
 184         }
 185
 186         *mf = fmt->format;
 187
 188         return 0;
 189 }
 190
 191 static int imgu_subdev_get_selection(struct v4l2_subdev *sd,
 192                                      struct v4l2_subdev_pad_config *cfg,
 193                                      struct v4l2_subdev_selection *sel)
 194 {
 195         struct v4l2_rect *try_sel, *r;
 196         struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
 197                                                         struct imgu_v4l2_subdev,
 198                                                         subdev);
 199
 200         if (sel->pad != IMGU_NODE_IN)
 201                 return -EINVAL;
 202
 203         switch (sel->target) {
 204         case V4L2_SEL_TGT_CROP:
 205                 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
 206                 r = &imgu_sd->rect.eff;
 207                 break;
 208         case V4L2_SEL_TGT_COMPOSE:
 209                 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
 210                 r = &imgu_sd->rect.bds;
 211                 break;
 212         default:
 213                 return -EINVAL;
 214         }
 215
 216         if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
 217                 sel->r = *try_sel;
 218         else
 219                 sel->r = *r;
 220
 221         return 0;
 222 }
 223
 224 static int imgu_subdev_set_selection(struct v4l2_subdev *sd,
 225                                      struct v4l2_subdev_pad_config *cfg,
 226                                      struct v4l2_subdev_selection *sel)
 227 {
 228         struct imgu_device *imgu = v4l2_get_subdevdata(sd);
 229         struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
 230                                                         struct imgu_v4l2_subdev,
 231                                                         subdev);
 232         struct v4l2_rect *rect, *try_sel;
 233
 234         dev_dbg(&imgu->pci_dev->dev,
 235                  "set subdev %u sel which %u target 0x%4x rect [%ux%u]",
 236                  imgu_sd->pipe, sel->which, sel->target,
 237                  sel->r.width, sel->r.height);
 238
 239         if (sel->pad != IMGU_NODE_IN)
 240                 return -EINVAL;
 241
 242         switch (sel->target) {
 243         case V4L2_SEL_TGT_CROP:
 244                 try_sel = v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
 245                 rect = &imgu_sd->rect.eff;
 246                 break;
 247         case V4L2_SEL_TGT_COMPOSE:
 248                 try_sel = v4l2_subdev_get_try_compose(sd, cfg, sel->pad);
 249                 rect = &imgu_sd->rect.bds;
 250                 break;
 251         default:
 252                 return -EINVAL;
 253         }
 254
 255         if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
 256                 *try_sel = sel->r;
 257         else
 258                 *rect = sel->r;
 259
 260         return 0;
 261 }
 262
 263 /******************** media_entity_operations ********************/
 264
 265 static int imgu_link_setup(struct media_entity *entity,
 266                            const struct media_pad *local,
 267                            const struct media_pad *remote, u32 flags)
 268 {
 269         struct imgu_media_pipe *imgu_pipe;
 270         struct v4l2_subdev *sd = container_of(entity, struct v4l2_subdev,
 271                                               entity);
 272         struct imgu_device *imgu = v4l2_get_subdevdata(sd);
 273         struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
 274                                                         struct imgu_v4l2_subdev,
 275                                                         subdev);
 276         unsigned int pipe = imgu_sd->pipe;
 277         u32 pad = local->index;
 278
 279         WARN_ON(pad >= IMGU_NODE_NUM);
 280
 281         dev_dbg(&imgu->pci_dev->dev, "pipe %u pad %u is %s", pipe, pad,
 282                  flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled");
 283
 284         imgu_pipe = &imgu->imgu_pipe[pipe];
 285         imgu_pipe->nodes[pad].enabled = flags & MEDIA_LNK_FL_ENABLED;
 286
 287         /* enable input node to enable the pipe */
 288         if (pad != IMGU_NODE_IN)
 289                 return 0;
 290
 291         if (flags & MEDIA_LNK_FL_ENABLED)
 292                 __set_bit(pipe, imgu->css.enabled_pipes);
 293         else
 294                 __clear_bit(pipe, imgu->css.enabled_pipes);
 295
 296         dev_dbg(&imgu->pci_dev->dev, "pipe %u is %s", pipe,
 297                  flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled");
 298
 299         return 0;
 300 }
 301
 302 /******************** vb2_ops ********************/
 303
 304 static int imgu_vb2_buf_init(struct vb2_buffer *vb)
 305 {
 306         struct sg_table *sg = vb2_dma_sg_plane_desc(vb, 0);
 307         struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
 308         struct imgu_buffer *buf = container_of(vb,
 309                 struct imgu_buffer, vid_buf.vbb.vb2_buf);
 310         struct imgu_video_device *node =
 311                 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
 312         unsigned int queue = imgu_node_to_queue(node->id);
 313
 314         if (queue == IPU3_CSS_QUEUE_PARAMS)
 315                 return 0;
 316
 317         return imgu_dmamap_map_sg(imgu, sg->sgl, sg->nents, &buf->map);
 318 }
 319
 320 /* Called when each buffer is freed */
 321 static void imgu_vb2_buf_cleanup(struct vb2_buffer *vb)
 322 {
 323         struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
 324         struct imgu_buffer *buf = container_of(vb,
 325                 struct imgu_buffer, vid_buf.vbb.vb2_buf);
 326         struct imgu_video_device *node =
 327                 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
 328         unsigned int queue = imgu_node_to_queue(node->id);
 329
 330         if (queue == IPU3_CSS_QUEUE_PARAMS)
 331                 return;
 332
 333         imgu_dmamap_unmap(imgu, &buf->map);
 334 }
 335
 336 /* Transfer buffer ownership to me */
 337 static void imgu_vb2_buf_queue(struct vb2_buffer *vb)
 338 {
 339         struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
 340         struct imgu_video_device *node =
 341                 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
 342         unsigned int queue = imgu_node_to_queue(node->id);
 343         struct imgu_buffer *buf = container_of(vb, struct imgu_buffer,
 344                                                vid_buf.vbb.vb2_buf);
 345         unsigned long need_bytes;
 346         unsigned long payload = vb2_get_plane_payload(vb, 0);
 347
 348         if (vb->vb2_queue->type == V4L2_BUF_TYPE_META_CAPTURE ||
 349             vb->vb2_queue->type == V4L2_BUF_TYPE_META_OUTPUT)
 350                 need_bytes = node->vdev_fmt.fmt.meta.buffersize;
 351         else
 352                 need_bytes = node->vdev_fmt.fmt.pix_mp.plane_fmt[0].sizeimage;
 353
 354         if (queue == IPU3_CSS_QUEUE_PARAMS && payload && payload < need_bytes) {
 355                 dev_err(&imgu->pci_dev->dev, "invalid data size for params.");
 356                 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
 357                 return;
 358         }
 359
 360         mutex_lock(&imgu->lock);
 361         if (queue != IPU3_CSS_QUEUE_PARAMS)
 362                 imgu_css_buf_init(&buf->css_buf, queue, buf->map.daddr);
 363
 364         list_add_tail(&buf->vid_buf.list, &node->buffers);
 365         mutex_unlock(&imgu->lock);
 366
 367         vb2_set_plane_payload(vb, 0, need_bytes);
 368
 369         mutex_lock(&imgu->streaming_lock);
 370         if (imgu->streaming)
 371                 imgu_queue_buffers(imgu, false, node->pipe);
 372         mutex_unlock(&imgu->streaming_lock);
 373
 374         dev_dbg(&imgu->pci_dev->dev, "%s for pipe %u node %u", __func__,
 375                 node->pipe, node->id);
 376 }
 377
 378 static int imgu_vb2_queue_setup(struct vb2_queue *vq,
 379                                 unsigned int *num_buffers,
 380                                 unsigned int *num_planes,
 381                                 unsigned int sizes[],
 382                                 struct device *alloc_devs[])
 383 {
 384         struct imgu_device *imgu = vb2_get_drv_priv(vq);
 385         struct imgu_video_device *node =
 386                 container_of(vq, struct imgu_video_device, vbq);
 387         const struct v4l2_format *fmt = &node->vdev_fmt;
 388         unsigned int size;
 389
 390         *num_buffers = clamp_val(*num_buffers, 1, VB2_MAX_FRAME);
 391         alloc_devs[0] = &imgu->pci_dev->dev;
 392
 393         if (vq->type == V4L2_BUF_TYPE_META_CAPTURE ||
 394             vq->type == V4L2_BUF_TYPE_META_OUTPUT)
 395                 size = fmt->fmt.meta.buffersize;
 396         else
 397                 size = fmt->fmt.pix_mp.plane_fmt[0].sizeimage;
 398
 399         if (*num_planes) {
 400                 if (sizes[0] < size)
 401                         return -EINVAL;
 402                 size = sizes[0];
 403         }
 404
 405         *num_planes = 1;
 406         sizes[0] = size;
 407
 408         /* Initialize buffer queue */
 409         INIT_LIST_HEAD(&node->buffers);
 410
 411         return 0;
 412 }
 413
 414 /* Check if all enabled video nodes are streaming, exception ignored */
 415 static bool imgu_all_nodes_streaming(struct imgu_device *imgu,
 416                                      struct imgu_video_device *except)
 417 {
 418         unsigned int i, pipe, p;
 419         struct imgu_video_device *node;
 420         struct device *dev = &imgu->pci_dev->dev;
 421
 422         pipe = except->pipe;
 423         if (!test_bit(pipe, imgu->css.enabled_pipes)) {
 424                 dev_warn(&imgu->pci_dev->dev,
 425                          "pipe %u link is not ready yet", pipe);
 426                 return false;
 427         }
 428
 429         for_each_set_bit(p, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) {
 430                 for (i = 0; i < IMGU_NODE_NUM; i++) {
 431                         node = &imgu->imgu_pipe[p].nodes[i];
 432                         dev_dbg(dev, "%s pipe %u queue %u name %s enabled = %u",
 433                                 __func__, p, i, node->name, node->enabled);
 434                         if (node == except)
 435                                 continue;
 436                         if (node->enabled && !vb2_start_streaming_called(&node->vbq))
 437                                 return false;
 438                 }
 439         }
 440
 441         return true;
 442 }
 443
 444 static void imgu_return_all_buffers(struct imgu_device *imgu,
 445                                     struct imgu_video_device *node,
 446                                     enum vb2_buffer_state state)
 447 {
 448         struct imgu_vb2_buffer *b, *b0;
 449
 450         /* Return all buffers */
 451         mutex_lock(&imgu->lock);
 452         list_for_each_entry_safe(b, b0, &node->buffers, list) {
 453                 list_del(&b->list);
 454                 vb2_buffer_done(&b->vbb.vb2_buf, state);
 455         }
 456         mutex_unlock(&imgu->lock);
 457 }
 458
 459 static int imgu_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
 460 {
 461         struct imgu_media_pipe *imgu_pipe;
 462         struct imgu_device *imgu = vb2_get_drv_priv(vq);
 463         struct device *dev = &imgu->pci_dev->dev;
 464         struct imgu_video_device *node =
 465                 container_of(vq, struct imgu_video_device, vbq);
 466         int r;
 467         unsigned int pipe;
 468
 469         dev_dbg(dev, "%s node name %s pipe %u id %u", __func__,
 470                 node->name, node->pipe, node->id);
 471
 472         mutex_lock(&imgu->streaming_lock);
 473         if (imgu->streaming) {
 474                 r = -EBUSY;
 475                 mutex_unlock(&imgu->streaming_lock);
 476                 goto fail_return_bufs;
 477         }
 478         mutex_unlock(&imgu->streaming_lock);
 479
 480         if (!node->enabled) {
 481                 dev_err(dev, "IMGU node is not enabled");
 482                 r = -EINVAL;
 483                 goto fail_return_bufs;
 484         }
 485
 486         pipe = node->pipe;
 487         imgu_pipe = &imgu->imgu_pipe[pipe];
 488         r = media_pipeline_start(&node->vdev.entity, &imgu_pipe->pipeline);
 489         if (r < 0)
 490                 goto fail_return_bufs;
 491
 492         if (!imgu_all_nodes_streaming(imgu, node))
 493                 return 0;
 494
 495         for_each_set_bit(pipe, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) {
 496                 r = v4l2_subdev_call(&imgu->imgu_pipe[pipe].imgu_sd.subdev,
 497                                      video, s_stream, 1);
 498                 if (r < 0)
 499                         goto fail_stop_pipeline;
 500         }
 501
 502         /* Start streaming of the whole pipeline now */
 503         dev_dbg(dev, "IMGU streaming is ready to start");
 504         mutex_lock(&imgu->streaming_lock);
 505         r = imgu_s_stream(imgu, true);
 506         if (!r)
 507                 imgu->streaming = true;
 508         mutex_unlock(&imgu->streaming_lock);
 509
 510         return 0;
 511
 512 fail_stop_pipeline:
 513         media_pipeline_stop(&node->vdev.entity);
 514 fail_return_bufs:
 515         imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_QUEUED);
 516
 517         return r;
 518 }
 519
 520 static void imgu_vb2_stop_streaming(struct vb2_queue *vq)
 521 {
 522         struct imgu_media_pipe *imgu_pipe;
 523         struct imgu_device *imgu = vb2_get_drv_priv(vq);
 524         struct device *dev = &imgu->pci_dev->dev;
 525         struct imgu_video_device *node =
 526                 container_of(vq, struct imgu_video_device, vbq);
 527         int r;
 528         unsigned int pipe;
 529
 530         WARN_ON(!node->enabled);
 531
 532         pipe = node->pipe;
 533         dev_dbg(dev, "Try to stream off node [%u][%u]", pipe, node->id);
 534         imgu_pipe = &imgu->imgu_pipe[pipe];
 535         r = v4l2_subdev_call(&imgu_pipe->imgu_sd.subdev, video, s_stream, 0);
 536         if (r)
 537                 dev_err(&imgu->pci_dev->dev,
 538                         "failed to stop subdev streaming\n");
 539
 540         mutex_lock(&imgu->streaming_lock);
 541         /* Was this the first node with streaming disabled? */
 542         if (imgu->streaming && imgu_all_nodes_streaming(imgu, node)) {
 543                 /* Yes, really stop streaming now */
 544                 dev_dbg(dev, "IMGU streaming is ready to stop");
 545                 r = imgu_s_stream(imgu, false);
 546                 if (!r)
 547                         imgu->streaming = false;
 548         }
 549
 550         imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_ERROR);
 551         mutex_unlock(&imgu->streaming_lock);
 552
 553         media_pipeline_stop(&node->vdev.entity);
 554 }
 555
 556 /******************** v4l2_ioctl_ops ********************/
 557
 558 #define VID_CAPTURE     0
 559 #define VID_OUTPUT      1
 560 #define DEF_VID_CAPTURE 0
 561 #define DEF_VID_OUTPUT  1
 562
 563 struct imgu_fmt {
 564         u32     fourcc;
 565         u16     type; /* VID_CAPTURE or VID_OUTPUT not both */
 566 };
 567
 568 /* format descriptions for capture and preview */
 569 static const struct imgu_fmt formats[] = {
 570         { V4L2_PIX_FMT_NV12, VID_CAPTURE },
 571         { V4L2_PIX_FMT_IPU3_SGRBG10, VID_OUTPUT },
 572         { V4L2_PIX_FMT_IPU3_SBGGR10, VID_OUTPUT },
 573         { V4L2_PIX_FMT_IPU3_SGBRG10, VID_OUTPUT },
 574         { V4L2_PIX_FMT_IPU3_SRGGB10, VID_OUTPUT },
 575 };
 576
 577 /* Find the first matched format, return default if not found */
 578 static const struct imgu_fmt *find_format(struct v4l2_format *f, u32 type)
 579 {
 580         unsigned int i;
 581
 582         for (i = 0; i < ARRAY_SIZE(formats); i++) {
 583                 if (formats[i].fourcc == f->fmt.pix_mp.pixelformat &&
 584                     formats[i].type == type)
 585                         return &formats[i];
 586         }
 587
 588         return type == VID_CAPTURE ? &formats[DEF_VID_CAPTURE] :
 589                                      &formats[DEF_VID_OUTPUT];
 590 }
 591
 592 static int imgu_vidioc_querycap(struct file *file, void *fh,
 593                                 struct v4l2_capability *cap)
 594 {
 595         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 596
 597         strscpy(cap->driver, IMGU_NAME, sizeof(cap->driver));
 598         strscpy(cap->card, IMGU_NAME, sizeof(cap->card));
 599         snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s", node->name);
 600
 601         return 0;
 602 }
 603
 604 static int enum_fmts(struct v4l2_fmtdesc *f, u32 type)
 605 {
 606         unsigned int i, j;
 607
 608         for (i = j = 0; i < ARRAY_SIZE(formats); ++i) {
 609                 if (formats[i].type == type) {
 610                         if (j == f->index)
 611                                 break;
 612                         ++j;
 613                 }
 614         }
 615
 616         if (i < ARRAY_SIZE(formats)) {
 617                 f->pixelformat = formats[i].fourcc;
 618                 return 0;
 619         }
 620
 621         return -EINVAL;
 622 }
 623
 624 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 625                                    struct v4l2_fmtdesc *f)
 626 {
 627         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 628                 return -EINVAL;
 629
 630         return enum_fmts(f, VID_CAPTURE);
 631 }
 632
 633 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
 634                                    struct v4l2_fmtdesc *f)
 635 {
 636         if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 637                 return -EINVAL;
 638
 639         return enum_fmts(f, VID_OUTPUT);
 640 }
 641
 642 /* Propagate forward always the format from the CIO2 subdev */
 643 static int imgu_vidioc_g_fmt(struct file *file, void *fh,
 644                              struct v4l2_format *f)
 645 {
 646         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 647
 648         f->fmt = node->vdev_fmt.fmt;
 649
 650         return 0;
 651 }
 652
 653 /*
 654  * Set input/output format. Unless it is just a try, this also resets
 655  * selections (ie. effective and BDS resolutions) to defaults.
 656  */
 657 static int imgu_fmt(struct imgu_device *imgu, unsigned int pipe, int node,
 658                     struct v4l2_format *f, bool try)
 659 {
 660         struct device *dev = &imgu->pci_dev->dev;
 661         struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL };
 662         struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL };
 663         struct v4l2_mbus_framefmt pad_fmt;
 664         unsigned int i, css_q;
 665         int ret;
 666         struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe];
 667         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
 668         struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd;
 669
 670         dev_dbg(dev, "set fmt node [%u][%u](try = %u)", pipe, node, try);
 671
 672         for (i = 0; i < IMGU_NODE_NUM; i++)
 673                 dev_dbg(dev, "IMGU pipe %u node %u enabled = %u",
 674                         pipe, i, imgu_pipe->nodes[i].enabled);
 675
 676         if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
 677                 css_pipe->vf_output_en = true;
 678
 679         if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
 680                 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
 681         else
 682                 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
 683
 684         dev_dbg(dev, "IPU3 pipe %u pipe_id = %u", pipe, css_pipe->pipe_id);
 685
 686         for (i = 0; i < IPU3_CSS_QUEUES; i++) {
 687                 unsigned int inode = imgu_map_node(imgu, i);
 688
 689                 /* Skip the meta node */
 690                 if (inode == IMGU_NODE_STAT_3A || inode == IMGU_NODE_PARAMS)
 691                         continue;
 692
 693                 if (try) {
 694                         fmts[i] = kmemdup(&imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp,
 695                                           sizeof(struct v4l2_pix_format_mplane),
 696                                           GFP_KERNEL);
 697                         if (!fmts[i]) {
 698                                 ret = -ENOMEM;
 699                                 goto out;
 700                         }
 701                 } else {
 702                         fmts[i] = &imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp;
 703                 }
 704
 705                 /* CSS expects some format on OUT queue */
 706                 if (i != IPU3_CSS_QUEUE_OUT &&
 707                     !imgu_pipe->nodes[inode].enabled)
 708                         fmts[i] = NULL;
 709         }
 710
 711         if (!try) {
 712                 /* eff and bds res got by imgu_s_sel */
 713                 struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd;
 714
 715                 rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff;
 716                 rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds;
 717                 rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc;
 718
 719                 /* suppose that pad fmt was set by subdev s_fmt before */
 720                 pad_fmt = imgu_pipe->nodes[IMGU_NODE_IN].pad_fmt;
 721                 rects[IPU3_CSS_RECT_GDC]->width = pad_fmt.width;
 722                 rects[IPU3_CSS_RECT_GDC]->height = pad_fmt.height;
 723         }
 724
 725         /*
 726          * imgu doesn't set the node to the value given by user
 727          * before we return success from this function, so set it here.
 728          */
 729         css_q = imgu_node_to_queue(node);
 730         if (!fmts[css_q]) {
 731                 ret = -EINVAL;
 732                 goto out;
 733         }
 734         *fmts[css_q] = f->fmt.pix_mp;
 735
 736         if (try)
 737                 ret = imgu_css_fmt_try(&imgu->css, fmts, rects, pipe);
 738         else
 739                 ret = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe);
 740
 741         /* ret is the binary number in the firmware blob */
 742         if (ret < 0)
 743                 goto out;
 744
 745         if (try)
 746                 f->fmt.pix_mp = *fmts[css_q];
 747         else
 748                 f->fmt = imgu_pipe->nodes[node].vdev_fmt.fmt;
 749
 750 out:
 751         if (try) {
 752                 for (i = 0; i < IPU3_CSS_QUEUES; i++)
 753                         kfree(fmts[i]);
 754         }
 755
 756         return ret;
 757 }
 758
 759 static int imgu_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
 760 {
 761         struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
 762         const struct imgu_fmt *fmt;
 763
 764         if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 765                 fmt = find_format(f, VID_CAPTURE);
 766         else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 767                 fmt = find_format(f, VID_OUTPUT);
 768         else
 769                 return -EINVAL;
 770
 771         pixm->pixelformat = fmt->fourcc;
 772
 773         memset(pixm->plane_fmt[0].reserved, 0,
 774                sizeof(pixm->plane_fmt[0].reserved));
 775
 776         return 0;
 777 }
 778
 779 static int imgu_vidioc_try_fmt(struct file *file, void *fh,
 780                                struct v4l2_format *f)
 781 {
 782         struct imgu_device *imgu = video_drvdata(file);
 783         struct device *dev = &imgu->pci_dev->dev;
 784         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 785         struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
 786         int r;
 787
 788         dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__,
 789                 pix_mp->width, pix_mp->height, node->id);
 790
 791         r = imgu_try_fmt(file, fh, f);
 792         if (r)
 793                 return r;
 794
 795         return imgu_fmt(imgu, node->pipe, node->id, f, true);
 796 }
 797
 798 static int imgu_vidioc_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
 799 {
 800         struct imgu_device *imgu = video_drvdata(file);
 801         struct device *dev = &imgu->pci_dev->dev;
 802         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 803         struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
 804         int r;
 805
 806         dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__,
 807                 pix_mp->width, pix_mp->height, node->id);
 808
 809         r = imgu_try_fmt(file, fh, f);
 810         if (r)
 811                 return r;
 812
 813         return imgu_fmt(imgu, node->pipe, node->id, f, false);
 814 }
 815
 816 struct imgu_meta_fmt {
 817         __u32 fourcc;
 818         char *name;
 819 };
 820
 821 /* From drivers/media/v4l2-core/v4l2-ioctl.c */
 822 static const struct imgu_meta_fmt meta_fmts[] = {
 823         { V4L2_META_FMT_IPU3_PARAMS, "IPU3 processing parameters" },
 824         { V4L2_META_FMT_IPU3_STAT_3A, "IPU3 3A statistics" },
 825 };
 826
 827 static int imgu_meta_enum_format(struct file *file, void *fh,
 828                                  struct v4l2_fmtdesc *fmt)
 829 {
 830         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 831         unsigned int i = fmt->type == V4L2_BUF_TYPE_META_OUTPUT ? 0 : 1;
 832
 833         /* Each node is dedicated to only one meta format */
 834         if (fmt->index > 0 || fmt->type != node->vbq.type)
 835                 return -EINVAL;
 836
 837         strscpy(fmt->description, meta_fmts[i].name, sizeof(fmt->description));
 838         fmt->pixelformat = meta_fmts[i].fourcc;
 839
 840         return 0;
 841 }
 842
 843 static int imgu_vidioc_g_meta_fmt(struct file *file, void *fh,
 844                                   struct v4l2_format *f)
 845 {
 846         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 847
 848         if (f->type != node->vbq.type)
 849                 return -EINVAL;
 850
 851         f->fmt = node->vdev_fmt.fmt;
 852
 853         return 0;
 854 }
 855
 856 static int imgu_vidioc_enum_input(struct file *file, void *fh,
 857                                   struct v4l2_input *input)
 858 {
 859         if (input->index > 0)
 860                 return -EINVAL;
 861         strscpy(input->name, "camera", sizeof(input->name));
 862         input->type = V4L2_INPUT_TYPE_CAMERA;
 863
 864         return 0;
 865 }
 866
 867 static int imgu_vidioc_g_input(struct file *file, void *fh, unsigned int *input)
 868 {
 869         *input = 0;
 870
 871         return 0;
 872 }
 873
 874 static int imgu_vidioc_s_input(struct file *file, void *fh, unsigned int input)
 875 {
 876         return input == 0 ? 0 : -EINVAL;
 877 }
 878
 879 static int imgu_vidioc_enum_output(struct file *file, void *fh,
 880                                    struct v4l2_output *output)
 881 {
 882         if (output->index > 0)
 883                 return -EINVAL;
 884         strscpy(output->name, "camera", sizeof(output->name));
 885         output->type = V4L2_INPUT_TYPE_CAMERA;
 886
 887         return 0;
 888 }
 889
 890 static int imgu_vidioc_g_output(struct file *file, void *fh,
 891                                 unsigned int *output)
 892 {
 893         *output = 0;
 894
 895         return 0;
 896 }
 897
 898 static int imgu_vidioc_s_output(struct file *file, void *fh,
 899                                 unsigned int output)
 900 {
 901         return output == 0 ? 0 : -EINVAL;
 902 }
 903
 904 /******************** function pointers ********************/
 905
 906 static struct v4l2_subdev_internal_ops imgu_subdev_internal_ops = {
 907         .open = imgu_subdev_open,
 908 };
 909
 910 static const struct v4l2_subdev_core_ops imgu_subdev_core_ops = {
 911         .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
 912         .unsubscribe_event = v4l2_event_subdev_unsubscribe,
 913 };
 914
 915 static const struct v4l2_subdev_video_ops imgu_subdev_video_ops = {
 916         .s_stream = imgu_subdev_s_stream,
 917 };
 918
 919 static const struct v4l2_subdev_pad_ops imgu_subdev_pad_ops = {
 920         .link_validate = v4l2_subdev_link_validate_default,
 921         .get_fmt = imgu_subdev_get_fmt,
 922         .set_fmt = imgu_subdev_set_fmt,
 923         .get_selection = imgu_subdev_get_selection,
 924         .set_selection = imgu_subdev_set_selection,
 925 };
 926
 927 static const struct v4l2_subdev_ops imgu_subdev_ops = {
 928         .core = &imgu_subdev_core_ops,
 929         .video = &imgu_subdev_video_ops,
 930         .pad = &imgu_subdev_pad_ops,
 931 };
 932
 933 static const struct media_entity_operations imgu_media_ops = {
 934         .link_setup = imgu_link_setup,
 935         .link_validate = v4l2_subdev_link_validate,
 936 };
 937
 938 /****************** vb2_ops of the Q ********************/
 939
 940 static const struct vb2_ops imgu_vb2_ops = {
 941         .buf_init = imgu_vb2_buf_init,
 942         .buf_cleanup = imgu_vb2_buf_cleanup,
 943         .buf_queue = imgu_vb2_buf_queue,
 944         .queue_setup = imgu_vb2_queue_setup,
 945         .start_streaming = imgu_vb2_start_streaming,
 946         .stop_streaming = imgu_vb2_stop_streaming,
 947         .wait_prepare = vb2_ops_wait_prepare,
 948         .wait_finish = vb2_ops_wait_finish,
 949 };
 950
 951 /****************** v4l2_file_operations *****************/
 952
 953 static const struct v4l2_file_operations imgu_v4l2_fops = {
 954         .unlocked_ioctl = video_ioctl2,
 955         .open = v4l2_fh_open,
 956         .release = vb2_fop_release,
 957         .poll = vb2_fop_poll,
 958         .mmap = vb2_fop_mmap,
 959 };
 960
 961 /******************** v4l2_ioctl_ops ********************/
 962
 963 static const struct v4l2_ioctl_ops imgu_v4l2_ioctl_ops = {
 964         .vidioc_querycap = imgu_vidioc_querycap,
 965
 966         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
 967         .vidioc_g_fmt_vid_cap_mplane = imgu_vidioc_g_fmt,
 968         .vidioc_s_fmt_vid_cap_mplane = imgu_vidioc_s_fmt,
 969         .vidioc_try_fmt_vid_cap_mplane = imgu_vidioc_try_fmt,
 970
 971         .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
 972         .vidioc_g_fmt_vid_out_mplane = imgu_vidioc_g_fmt,
 973         .vidioc_s_fmt_vid_out_mplane = imgu_vidioc_s_fmt,
 974         .vidioc_try_fmt_vid_out_mplane = imgu_vidioc_try_fmt,
 975
 976         .vidioc_enum_output = imgu_vidioc_enum_output,
 977         .vidioc_g_output = imgu_vidioc_g_output,
 978         .vidioc_s_output = imgu_vidioc_s_output,
 979
 980         .vidioc_enum_input = imgu_vidioc_enum_input,
 981         .vidioc_g_input = imgu_vidioc_g_input,
 982         .vidioc_s_input = imgu_vidioc_s_input,
 983
 984         /* buffer queue management */
 985         .vidioc_reqbufs = vb2_ioctl_reqbufs,
 986         .vidioc_create_bufs = vb2_ioctl_create_bufs,
 987         .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
 988         .vidioc_querybuf = vb2_ioctl_querybuf,
 989         .vidioc_qbuf = vb2_ioctl_qbuf,
 990         .vidioc_dqbuf = vb2_ioctl_dqbuf,
 991         .vidioc_streamon = vb2_ioctl_streamon,
 992         .vidioc_streamoff = vb2_ioctl_streamoff,
 993         .vidioc_expbuf = vb2_ioctl_expbuf,
 994 };
 995
 996 static const struct v4l2_ioctl_ops imgu_v4l2_meta_ioctl_ops = {
 997         .vidioc_querycap = imgu_vidioc_querycap,
 998
 999         /* meta capture */
1000         .vidioc_enum_fmt_meta_cap = imgu_meta_enum_format,
1001         .vidioc_g_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
1002         .vidioc_s_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
1003         .vidioc_try_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
1004
1005         /* meta output */
1006         .vidioc_enum_fmt_meta_out = imgu_meta_enum_format,
1007         .vidioc_g_fmt_meta_out = imgu_vidioc_g_meta_fmt,
1008         .vidioc_s_fmt_meta_out = imgu_vidioc_g_meta_fmt,
1009         .vidioc_try_fmt_meta_out = imgu_vidioc_g_meta_fmt,
1010
1011         .vidioc_reqbufs = vb2_ioctl_reqbufs,
1012         .vidioc_create_bufs = vb2_ioctl_create_bufs,
1013         .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1014         .vidioc_querybuf = vb2_ioctl_querybuf,
1015         .vidioc_qbuf = vb2_ioctl_qbuf,
1016         .vidioc_dqbuf = vb2_ioctl_dqbuf,
1017         .vidioc_streamon = vb2_ioctl_streamon,
1018         .vidioc_streamoff = vb2_ioctl_streamoff,
1019         .vidioc_expbuf = vb2_ioctl_expbuf,
1020 };
1021
1022 static int imgu_sd_s_ctrl(struct v4l2_ctrl *ctrl)
1023 {
1024         struct imgu_v4l2_subdev *imgu_sd =
1025                 container_of(ctrl->handler, struct imgu_v4l2_subdev, ctrl_handler);
1026         struct imgu_device *imgu = v4l2_get_subdevdata(&imgu_sd->subdev);
1027         struct device *dev = &imgu->pci_dev->dev;
1028
1029         dev_dbg(dev, "set val %d to ctrl 0x%8x for subdev %u",
1030                 ctrl->val, ctrl->id, imgu_sd->pipe);
1031
1032         switch (ctrl->id) {
1033         case V4L2_CID_INTEL_IPU3_MODE:
1034                 atomic_set(&imgu_sd->running_mode, ctrl->val);
1035                 return 0;
1036         default:
1037                 return -EINVAL;
1038         }
1039 }
1040
1041 static const struct v4l2_ctrl_ops imgu_subdev_ctrl_ops = {
1042         .s_ctrl = imgu_sd_s_ctrl,
1043 };
1044
1045 static const char * const imgu_ctrl_mode_strings[] = {
1046         "Video mode",
1047         "Still mode",
1048 };
1049
1050 static const struct v4l2_ctrl_config imgu_subdev_ctrl_mode = {
1051         .ops = &imgu_subdev_ctrl_ops,
1052         .id = V4L2_CID_INTEL_IPU3_MODE,
1053         .name = "IPU3 Pipe Mode",
1054         .type = V4L2_CTRL_TYPE_MENU,
1055         .max = ARRAY_SIZE(imgu_ctrl_mode_strings) - 1,
1056         .def = IPU3_RUNNING_MODE_VIDEO,
1057         .qmenu = imgu_ctrl_mode_strings,
1058 };
1059
1060 /******************** Framework registration ********************/
1061
1062 /* helper function to config node's video properties */
1063 static void imgu_node_to_v4l2(u32 node, struct video_device *vdev,
1064                               struct v4l2_format *f)
1065 {
1066         u32 cap;
1067
1068         /* Should not happen */
1069         WARN_ON(node >= IMGU_NODE_NUM);
1070
1071         switch (node) {
1072         case IMGU_NODE_IN:
1073                 cap = V4L2_CAP_VIDEO_OUTPUT_MPLANE;
1074                 f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1075                 vdev->ioctl_ops = &imgu_v4l2_ioctl_ops;
1076                 break;
1077         case IMGU_NODE_PARAMS:
1078                 cap = V4L2_CAP_META_OUTPUT;
1079                 f->type = V4L2_BUF_TYPE_META_OUTPUT;
1080                 f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_PARAMS;
1081                 vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops;
1082                 imgu_css_meta_fmt_set(&f->fmt.meta);
1083                 break;
1084         case IMGU_NODE_STAT_3A:
1085                 cap = V4L2_CAP_META_CAPTURE;
1086                 f->type = V4L2_BUF_TYPE_META_CAPTURE;
1087                 f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_STAT_3A;
1088                 vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops;
1089                 imgu_css_meta_fmt_set(&f->fmt.meta);
1090                 break;
1091         default:
1092                 cap = V4L2_CAP_VIDEO_CAPTURE_MPLANE;
1093                 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1094                 vdev->ioctl_ops = &imgu_v4l2_ioctl_ops;
1095         }
1096
1097         vdev->device_caps = V4L2_CAP_STREAMING | cap;
1098 }
1099
1100 static int imgu_v4l2_subdev_register(struct imgu_device *imgu,
1101                                      struct imgu_v4l2_subdev *imgu_sd,
1102                                      unsigned int pipe)
1103 {
1104         int i, r;
1105         struct v4l2_ctrl_handler *hdl = &imgu_sd->ctrl_handler;
1106         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1107
1108         /* Initialize subdev media entity */
1109         r = media_entity_pads_init(&imgu_sd->subdev.entity, IMGU_NODE_NUM,
1110                                    imgu_sd->subdev_pads);
1111         if (r) {
1112                 dev_err(&imgu->pci_dev->dev,
1113                         "failed initialize subdev media entity (%d)\n", r);
1114                 return r;
1115         }
1116         imgu_sd->subdev.entity.ops = &imgu_media_ops;
1117         for (i = 0; i < IMGU_NODE_NUM; i++) {
1118                 imgu_sd->subdev_pads[i].flags = imgu_pipe->nodes[i].output ?
1119                         MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
1120         }
1121
1122         /* Initialize subdev */
1123         v4l2_subdev_init(&imgu_sd->subdev, &imgu_subdev_ops);
1124         imgu_sd->subdev.entity.function = MEDIA_ENT_F_PROC_VIDEO_STATISTICS;
1125         imgu_sd->subdev.internal_ops = &imgu_subdev_internal_ops;
1126         imgu_sd->subdev.flags = V4L2_SUBDEV_FL_HAS_DEVNODE |
1127                                 V4L2_SUBDEV_FL_HAS_EVENTS;
1128         snprintf(imgu_sd->subdev.name, sizeof(imgu_sd->subdev.name),
1129                  "%s %u", IMGU_NAME, pipe);
1130         v4l2_set_subdevdata(&imgu_sd->subdev, imgu);
1131         atomic_set(&imgu_sd->running_mode, IPU3_RUNNING_MODE_VIDEO);
1132         v4l2_ctrl_handler_init(hdl, 1);
1133         imgu_sd->subdev.ctrl_handler = hdl;
1134         imgu_sd->ctrl = v4l2_ctrl_new_custom(hdl, &imgu_subdev_ctrl_mode, NULL);
1135         if (hdl->error) {
1136                 r = hdl->error;
1137                 dev_err(&imgu->pci_dev->dev,
1138                         "failed to create subdev v4l2 ctrl with err %d", r);
1139                 goto fail_subdev;
1140         }
1141         r = v4l2_device_register_subdev(&imgu->v4l2_dev, &imgu_sd->subdev);
1142         if (r) {
1143                 dev_err(&imgu->pci_dev->dev,
1144                         "failed initialize subdev (%d)\n", r);
1145                 goto fail_subdev;
1146         }
1147
1148         imgu_sd->pipe = pipe;
1149         return 0;
1150
1151 fail_subdev:
1152         v4l2_ctrl_handler_free(imgu_sd->subdev.ctrl_handler);
1153         media_entity_cleanup(&imgu_sd->subdev.entity);
1154
1155         return r;
1156 }
1157
1158 static int imgu_v4l2_node_setup(struct imgu_device *imgu, unsigned int pipe,
1159                                 int node_num)
1160 {
1161         int r;
1162         u32 flags;
1163         struct v4l2_mbus_framefmt def_bus_fmt = { 0 };
1164         struct v4l2_pix_format_mplane def_pix_fmt = { 0 };
1165         struct device *dev = &imgu->pci_dev->dev;
1166         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1167         struct v4l2_subdev *sd = &imgu_pipe->imgu_sd.subdev;
1168         struct imgu_video_device *node = &imgu_pipe->nodes[node_num];
1169         struct video_device *vdev = &node->vdev;
1170         struct vb2_queue *vbq = &node->vbq;
1171
1172         /* Initialize formats to default values */
1173         def_bus_fmt.width = 1920;
1174         def_bus_fmt.height = 1080;
1175         def_bus_fmt.code = MEDIA_BUS_FMT_FIXED;
1176         def_bus_fmt.field = V4L2_FIELD_NONE;
1177         def_bus_fmt.colorspace = V4L2_COLORSPACE_RAW;
1178         def_bus_fmt.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1179         def_bus_fmt.quantization = V4L2_QUANTIZATION_DEFAULT;
1180         def_bus_fmt.xfer_func = V4L2_XFER_FUNC_DEFAULT;
1181
1182         def_pix_fmt.width = def_bus_fmt.width;
1183         def_pix_fmt.height = def_bus_fmt.height;
1184         def_pix_fmt.field = def_bus_fmt.field;
1185         def_pix_fmt.num_planes = 1;
1186         def_pix_fmt.plane_fmt[0].bytesperline = def_pix_fmt.width * 2;
1187         def_pix_fmt.plane_fmt[0].sizeimage =
1188                 def_pix_fmt.height * def_pix_fmt.plane_fmt[0].bytesperline;
1189         def_pix_fmt.flags = 0;
1190         def_pix_fmt.colorspace = def_bus_fmt.colorspace;
1191         def_pix_fmt.ycbcr_enc = def_bus_fmt.ycbcr_enc;
1192         def_pix_fmt.quantization = def_bus_fmt.quantization;
1193         def_pix_fmt.xfer_func = def_bus_fmt.xfer_func;
1194
1195         /* Initialize miscellaneous variables */
1196         mutex_init(&node->lock);
1197         INIT_LIST_HEAD(&node->buffers);
1198
1199         /* Initialize formats to default values */
1200         node->pad_fmt = def_bus_fmt;
1201         node->id = node_num;
1202         node->pipe = pipe;
1203         imgu_node_to_v4l2(node_num, vdev, &node->vdev_fmt);
1204         if (node->vdev_fmt.type ==
1205             V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ||
1206             node->vdev_fmt.type ==
1207             V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
1208                 def_pix_fmt.pixelformat = node->output ?
1209                         V4L2_PIX_FMT_IPU3_SGRBG10 :
1210                         V4L2_PIX_FMT_NV12;
1211                 node->vdev_fmt.fmt.pix_mp = def_pix_fmt;
1212         }
1213
1214         /* Initialize media entities */
1215         r = media_entity_pads_init(&vdev->entity, 1, &node->vdev_pad);
1216         if (r) {
1217                 dev_err(dev, "failed initialize media entity (%d)\n", r);
1218                 mutex_destroy(&node->lock);
1219                 return r;
1220         }
1221         node->vdev_pad.flags = node->output ?
1222                 MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
1223         vdev->entity.ops = NULL;
1224
1225         /* Initialize vbq */
1226         vbq->type = node->vdev_fmt.type;
1227         vbq->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF;
1228         vbq->ops = &imgu_vb2_ops;
1229         vbq->mem_ops = &vb2_dma_sg_memops;
1230         if (imgu->buf_struct_size <= 0)
1231                 imgu->buf_struct_size =
1232                         sizeof(struct imgu_vb2_buffer);
1233         vbq->buf_struct_size = imgu->buf_struct_size;
1234         vbq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1235         /* can streamon w/o buffers */
1236         vbq->min_buffers_needed = 0;
1237         vbq->drv_priv = imgu;
1238         vbq->lock = &node->lock;
1239         r = vb2_queue_init(vbq);
1240         if (r) {
1241                 dev_err(dev, "failed to initialize video queue (%d)", r);
1242                 media_entity_cleanup(&vdev->entity);
1243                 return r;
1244         }
1245
1246         /* Initialize vdev */
1247         snprintf(vdev->name, sizeof(vdev->name), "%s %u %s",
1248                  IMGU_NAME, pipe, node->name);
1249         vdev->release = video_device_release_empty;
1250         vdev->fops = &imgu_v4l2_fops;
1251         vdev->lock = &node->lock;
1252         vdev->v4l2_dev = &imgu->v4l2_dev;
1253         vdev->queue = &node->vbq;
1254         vdev->vfl_dir = node->output ? VFL_DIR_TX : VFL_DIR_RX;
1255         video_set_drvdata(vdev, imgu);
1256         r = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1257         if (r) {
1258                 dev_err(dev, "failed to register video device (%d)", r);
1259                 media_entity_cleanup(&vdev->entity);
1260                 return r;
1261         }
1262
1263         /* Create link between video node and the subdev pad */
1264         flags = 0;
1265         if (node->enabled)
1266                 flags |= MEDIA_LNK_FL_ENABLED;
1267         if (node->output) {
1268                 r = media_create_pad_link(&vdev->entity, 0, &sd->entity,
1269                                           node_num, flags);
1270         } else {
1271                 if (node->id == IMGU_NODE_OUT) {
1272                         flags |= MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE;
1273                         node->enabled = true;
1274                 }
1275
1276                 r = media_create_pad_link(&sd->entity, node_num, &vdev->entity,
1277                                           0, flags);
1278         }
1279         if (r) {
1280                 dev_err(dev, "failed to create pad link (%d)", r);
1281                 video_unregister_device(vdev);
1282                 return r;
1283         }
1284
1285         return 0;
1286 }
1287
1288 static void imgu_v4l2_nodes_cleanup_pipe(struct imgu_device *imgu,
1289                                          unsigned int pipe, int node)
1290 {
1291         int i;
1292         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1293
1294         for (i = 0; i < node; i++) {
1295                 video_unregister_device(&imgu_pipe->nodes[i].vdev);
1296                 media_entity_cleanup(&imgu_pipe->nodes[i].vdev.entity);
1297                 mutex_destroy(&imgu_pipe->nodes[i].lock);
1298         }
1299 }
1300
1301 static int imgu_v4l2_nodes_setup_pipe(struct imgu_device *imgu, int pipe)
1302 {
1303         int i;
1304
1305         for (i = 0; i < IMGU_NODE_NUM; i++) {
1306                 int r = imgu_v4l2_node_setup(imgu, pipe, i);
1307
1308                 if (r) {
1309                         imgu_v4l2_nodes_cleanup_pipe(imgu, pipe, i);
1310                         return r;
1311                 }
1312         }
1313         return 0;
1314 }
1315
1316 static void imgu_v4l2_subdev_cleanup(struct imgu_device *imgu, unsigned int i)
1317 {
1318         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[i];
1319
1320         v4l2_device_unregister_subdev(&imgu_pipe->imgu_sd.subdev);
1321         v4l2_ctrl_handler_free(imgu_pipe->imgu_sd.subdev.ctrl_handler);
1322         media_entity_cleanup(&imgu_pipe->imgu_sd.subdev.entity);
1323 }
1324
1325 static void imgu_v4l2_cleanup_pipes(struct imgu_device *imgu, unsigned int pipe)
1326 {
1327         int i;
1328
1329         for (i = 0; i < pipe; i++) {
1330                 imgu_v4l2_nodes_cleanup_pipe(imgu, i, IMGU_NODE_NUM);
1331                 imgu_v4l2_subdev_cleanup(imgu, i);
1332         }
1333 }
1334
1335 static int imgu_v4l2_register_pipes(struct imgu_device *imgu)
1336 {
1337         struct imgu_media_pipe *imgu_pipe;
1338         int i, r;
1339
1340         for (i = 0; i < IMGU_MAX_PIPE_NUM; i++) {
1341                 imgu_pipe = &imgu->imgu_pipe[i];
1342                 r = imgu_v4l2_subdev_register(imgu, &imgu_pipe->imgu_sd, i);
1343                 if (r) {
1344                         dev_err(&imgu->pci_dev->dev,
1345                                 "failed to register subdev%u ret (%d)\n", i, r);
1346                         goto pipes_cleanup;
1347                 }
1348                 r = imgu_v4l2_nodes_setup_pipe(imgu, i);
1349                 if (r) {
1350                         imgu_v4l2_subdev_cleanup(imgu, i);
1351                         goto pipes_cleanup;
1352                 }
1353         }
1354
1355         return 0;
1356
1357 pipes_cleanup:
1358         imgu_v4l2_cleanup_pipes(imgu, i);
1359         return r;
1360 }
1361
1362 int imgu_v4l2_register(struct imgu_device *imgu)
1363 {
1364         int r;
1365
1366         /* Initialize miscellaneous variables */
1367         imgu->streaming = false;
1368
1369         /* Set up media device */
1370         media_device_pci_init(&imgu->media_dev, imgu->pci_dev, IMGU_NAME);
1371
1372         /* Set up v4l2 device */
1373         imgu->v4l2_dev.mdev = &imgu->media_dev;
1374         imgu->v4l2_dev.ctrl_handler = NULL;
1375         r = v4l2_device_register(&imgu->pci_dev->dev, &imgu->v4l2_dev);
1376         if (r) {
1377                 dev_err(&imgu->pci_dev->dev,
1378                         "failed to register V4L2 device (%d)\n", r);
1379                 goto fail_v4l2_dev;
1380         }
1381
1382         r = imgu_v4l2_register_pipes(imgu);
1383         if (r) {
1384                 dev_err(&imgu->pci_dev->dev,
1385                         "failed to register pipes (%d)\n", r);
1386                 goto fail_v4l2_pipes;
1387         }
1388
1389         r = v4l2_device_register_subdev_nodes(&imgu->v4l2_dev);
1390         if (r) {
1391                 dev_err(&imgu->pci_dev->dev,
1392                         "failed to register subdevs (%d)\n", r);
1393                 goto fail_subdevs;
1394         }
1395
1396         r = media_device_register(&imgu->media_dev);
1397         if (r) {
1398                 dev_err(&imgu->pci_dev->dev,
1399                         "failed to register media device (%d)\n", r);
1400                 goto fail_subdevs;
1401         }
1402
1403         return 0;
1404
1405 fail_subdevs:
1406         imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM);
1407 fail_v4l2_pipes:
1408         v4l2_device_unregister(&imgu->v4l2_dev);
1409 fail_v4l2_dev:
1410         media_device_cleanup(&imgu->media_dev);
1411
1412         return r;
1413 }
1414
1415 int imgu_v4l2_unregister(struct imgu_device *imgu)
1416 {
1417         media_device_unregister(&imgu->media_dev);
1418         imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM);
1419         v4l2_device_unregister(&imgu->v4l2_dev);
1420         media_device_cleanup(&imgu->media_dev);
1421
1422         return 0;
1423 }
1424
1425 void imgu_v4l2_buffer_done(struct vb2_buffer *vb,
1426                            enum vb2_buffer_state state)
1427 {
1428         struct imgu_vb2_buffer *b =
1429                 container_of(vb, struct imgu_vb2_buffer, vbb.vb2_buf);
1430
1431         list_del(&b->list);
1432         vb2_buffer_done(&b->vbb.vb2_buf, state);
1433 }