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