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->state, 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->state, IMGU_NODE_IN) = try_crop;
  48         *v4l2_subdev_get_try_compose(sd, fh->state, 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_state *sd_state,
 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, sd_state, 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_state *sd_state,
 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, sd_state, 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 struct v4l2_rect *
 192 imgu_subdev_get_crop(struct imgu_v4l2_subdev *sd,
 193                      struct v4l2_subdev_state *sd_state, unsigned int pad,
 194                      enum v4l2_subdev_format_whence which)
 195 {
 196         if (which == V4L2_SUBDEV_FORMAT_TRY)
 197                 return v4l2_subdev_get_try_crop(&sd->subdev, sd_state, pad);
 198         else
 199                 return &sd->rect.eff;
 200 }
 201
 202 static struct v4l2_rect *
 203 imgu_subdev_get_compose(struct imgu_v4l2_subdev *sd,
 204                         struct v4l2_subdev_state *sd_state, unsigned int pad,
 205                         enum v4l2_subdev_format_whence which)
 206 {
 207         if (which == V4L2_SUBDEV_FORMAT_TRY)
 208                 return v4l2_subdev_get_try_compose(&sd->subdev, sd_state, pad);
 209         else
 210                 return &sd->rect.bds;
 211 }
 212
 213 static int imgu_subdev_get_selection(struct v4l2_subdev *sd,
 214                                      struct v4l2_subdev_state *sd_state,
 215                                      struct v4l2_subdev_selection *sel)
 216 {
 217         struct imgu_v4l2_subdev *imgu_sd =
 218                 container_of(sd, struct imgu_v4l2_subdev, subdev);
 219
 220         if (sel->pad != IMGU_NODE_IN)
 221                 return -EINVAL;
 222
 223         switch (sel->target) {
 224         case V4L2_SEL_TGT_CROP:
 225                 sel->r = *imgu_subdev_get_crop(imgu_sd, sd_state, sel->pad,
 226                                                sel->which);
 227                 return 0;
 228         case V4L2_SEL_TGT_COMPOSE:
 229                 sel->r = *imgu_subdev_get_compose(imgu_sd, sd_state, sel->pad,
 230                                                   sel->which);
 231                 return 0;
 232         default:
 233                 return -EINVAL;
 234         }
 235 }
 236
 237 static int imgu_subdev_set_selection(struct v4l2_subdev *sd,
 238                                      struct v4l2_subdev_state *sd_state,
 239                                      struct v4l2_subdev_selection *sel)
 240 {
 241         struct imgu_device *imgu = v4l2_get_subdevdata(sd);
 242         struct imgu_v4l2_subdev *imgu_sd =
 243                 container_of(sd, struct imgu_v4l2_subdev, subdev);
 244         struct v4l2_rect *rect;
 245
 246         dev_dbg(&imgu->pci_dev->dev,
 247                  "set subdev %u sel which %u target 0x%4x rect [%ux%u]",
 248                  imgu_sd->pipe, sel->which, sel->target,
 249                  sel->r.width, sel->r.height);
 250
 251         if (sel->pad != IMGU_NODE_IN)
 252                 return -EINVAL;
 253
 254         switch (sel->target) {
 255         case V4L2_SEL_TGT_CROP:
 256                 rect = imgu_subdev_get_crop(imgu_sd, sd_state, sel->pad,
 257                                             sel->which);
 258                 break;
 259         case V4L2_SEL_TGT_COMPOSE:
 260                 rect = imgu_subdev_get_compose(imgu_sd, sd_state, sel->pad,
 261                                                sel->which);
 262                 break;
 263         default:
 264                 return -EINVAL;
 265         }
 266
 267         *rect = sel->r;
 268         return 0;
 269 }
 270
 271 /******************** media_entity_operations ********************/
 272
 273 static int imgu_link_setup(struct media_entity *entity,
 274                            const struct media_pad *local,
 275                            const struct media_pad *remote, u32 flags)
 276 {
 277         struct imgu_media_pipe *imgu_pipe;
 278         struct v4l2_subdev *sd = container_of(entity, struct v4l2_subdev,
 279                                               entity);
 280         struct imgu_device *imgu = v4l2_get_subdevdata(sd);
 281         struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
 282                                                         struct imgu_v4l2_subdev,
 283                                                         subdev);
 284         unsigned int pipe = imgu_sd->pipe;
 285         u32 pad = local->index;
 286
 287         WARN_ON(pad >= IMGU_NODE_NUM);
 288
 289         dev_dbg(&imgu->pci_dev->dev, "pipe %u pad %u is %s", pipe, pad,
 290                  flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled");
 291
 292         imgu_pipe = &imgu->imgu_pipe[pipe];
 293         imgu_pipe->nodes[pad].enabled = flags & MEDIA_LNK_FL_ENABLED;
 294
 295         /* enable input node to enable the pipe */
 296         if (pad != IMGU_NODE_IN)
 297                 return 0;
 298
 299         if (flags & MEDIA_LNK_FL_ENABLED)
 300                 __set_bit(pipe, imgu->css.enabled_pipes);
 301         else
 302                 __clear_bit(pipe, imgu->css.enabled_pipes);
 303
 304         dev_dbg(&imgu->pci_dev->dev, "pipe %u is %s", pipe,
 305                  flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled");
 306
 307         return 0;
 308 }
 309
 310 /******************** vb2_ops ********************/
 311
 312 static int imgu_vb2_buf_init(struct vb2_buffer *vb)
 313 {
 314         struct sg_table *sg = vb2_dma_sg_plane_desc(vb, 0);
 315         struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
 316         struct imgu_buffer *buf = container_of(vb,
 317                 struct imgu_buffer, vid_buf.vbb.vb2_buf);
 318         struct imgu_video_device *node =
 319                 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
 320         unsigned int queue = imgu_node_to_queue(node->id);
 321
 322         if (queue == IPU3_CSS_QUEUE_PARAMS)
 323                 return 0;
 324
 325         return imgu_dmamap_map_sg(imgu, sg->sgl, sg->nents, &buf->map);
 326 }
 327
 328 /* Called when each buffer is freed */
 329 static void imgu_vb2_buf_cleanup(struct vb2_buffer *vb)
 330 {
 331         struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
 332         struct imgu_buffer *buf = container_of(vb,
 333                 struct imgu_buffer, vid_buf.vbb.vb2_buf);
 334         struct imgu_video_device *node =
 335                 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
 336         unsigned int queue = imgu_node_to_queue(node->id);
 337
 338         if (queue == IPU3_CSS_QUEUE_PARAMS)
 339                 return;
 340
 341         imgu_dmamap_unmap(imgu, &buf->map);
 342 }
 343
 344 /* Transfer buffer ownership to me */
 345 static void imgu_vb2_buf_queue(struct vb2_buffer *vb)
 346 {
 347         struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
 348         struct imgu_video_device *node =
 349                 container_of(vb->vb2_queue, struct imgu_video_device, vbq);
 350         unsigned int queue = imgu_node_to_queue(node->id);
 351         struct imgu_buffer *buf = container_of(vb, struct imgu_buffer,
 352                                                vid_buf.vbb.vb2_buf);
 353         unsigned long need_bytes;
 354         unsigned long payload = vb2_get_plane_payload(vb, 0);
 355
 356         if (vb->vb2_queue->type == V4L2_BUF_TYPE_META_CAPTURE ||
 357             vb->vb2_queue->type == V4L2_BUF_TYPE_META_OUTPUT)
 358                 need_bytes = node->vdev_fmt.fmt.meta.buffersize;
 359         else
 360                 need_bytes = node->vdev_fmt.fmt.pix_mp.plane_fmt[0].sizeimage;
 361
 362         if (queue == IPU3_CSS_QUEUE_PARAMS && payload && payload < need_bytes) {
 363                 dev_err(&imgu->pci_dev->dev, "invalid data size for params.");
 364                 vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
 365                 return;
 366         }
 367
 368         mutex_lock(&imgu->lock);
 369         if (queue != IPU3_CSS_QUEUE_PARAMS)
 370                 imgu_css_buf_init(&buf->css_buf, queue, buf->map.daddr);
 371
 372         list_add_tail(&buf->vid_buf.list, &node->buffers);
 373         mutex_unlock(&imgu->lock);
 374
 375         vb2_set_plane_payload(vb, 0, need_bytes);
 376
 377         mutex_lock(&imgu->streaming_lock);
 378         if (imgu->streaming)
 379                 imgu_queue_buffers(imgu, false, node->pipe);
 380         mutex_unlock(&imgu->streaming_lock);
 381
 382         dev_dbg(&imgu->pci_dev->dev, "%s for pipe %u node %u", __func__,
 383                 node->pipe, node->id);
 384 }
 385
 386 static int imgu_vb2_queue_setup(struct vb2_queue *vq,
 387                                 unsigned int *num_buffers,
 388                                 unsigned int *num_planes,
 389                                 unsigned int sizes[],
 390                                 struct device *alloc_devs[])
 391 {
 392         struct imgu_device *imgu = vb2_get_drv_priv(vq);
 393         struct imgu_video_device *node =
 394                 container_of(vq, struct imgu_video_device, vbq);
 395         const struct v4l2_format *fmt = &node->vdev_fmt;
 396         unsigned int size;
 397
 398         *num_buffers = clamp_val(*num_buffers, 1, VB2_MAX_FRAME);
 399         alloc_devs[0] = &imgu->pci_dev->dev;
 400
 401         if (vq->type == V4L2_BUF_TYPE_META_CAPTURE ||
 402             vq->type == V4L2_BUF_TYPE_META_OUTPUT)
 403                 size = fmt->fmt.meta.buffersize;
 404         else
 405                 size = fmt->fmt.pix_mp.plane_fmt[0].sizeimage;
 406
 407         if (*num_planes) {
 408                 if (sizes[0] < size)
 409                         return -EINVAL;
 410                 size = sizes[0];
 411         }
 412
 413         *num_planes = 1;
 414         sizes[0] = size;
 415
 416         /* Initialize buffer queue */
 417         INIT_LIST_HEAD(&node->buffers);
 418
 419         return 0;
 420 }
 421
 422 /* Check if all enabled video nodes are streaming, exception ignored */
 423 static bool imgu_all_nodes_streaming(struct imgu_device *imgu,
 424                                      struct imgu_video_device *except)
 425 {
 426         unsigned int i, pipe, p;
 427         struct imgu_video_device *node;
 428         struct device *dev = &imgu->pci_dev->dev;
 429
 430         pipe = except->pipe;
 431         if (!test_bit(pipe, imgu->css.enabled_pipes)) {
 432                 dev_warn(&imgu->pci_dev->dev,
 433                          "pipe %u link is not ready yet", pipe);
 434                 return false;
 435         }
 436
 437         for_each_set_bit(p, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) {
 438                 for (i = 0; i < IMGU_NODE_NUM; i++) {
 439                         node = &imgu->imgu_pipe[p].nodes[i];
 440                         dev_dbg(dev, "%s pipe %u queue %u name %s enabled = %u",
 441                                 __func__, p, i, node->name, node->enabled);
 442                         if (node == except)
 443                                 continue;
 444                         if (node->enabled && !vb2_start_streaming_called(&node->vbq))
 445                                 return false;
 446                 }
 447         }
 448
 449         return true;
 450 }
 451
 452 static void imgu_return_all_buffers(struct imgu_device *imgu,
 453                                     struct imgu_video_device *node,
 454                                     enum vb2_buffer_state state)
 455 {
 456         struct imgu_vb2_buffer *b, *b0;
 457
 458         /* Return all buffers */
 459         mutex_lock(&imgu->lock);
 460         list_for_each_entry_safe(b, b0, &node->buffers, list) {
 461                 list_del(&b->list);
 462                 vb2_buffer_done(&b->vbb.vb2_buf, state);
 463         }
 464         mutex_unlock(&imgu->lock);
 465 }
 466
 467 static int imgu_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
 468 {
 469         struct imgu_media_pipe *imgu_pipe;
 470         struct imgu_device *imgu = vb2_get_drv_priv(vq);
 471         struct device *dev = &imgu->pci_dev->dev;
 472         struct imgu_video_device *node =
 473                 container_of(vq, struct imgu_video_device, vbq);
 474         int r;
 475         unsigned int pipe;
 476
 477         dev_dbg(dev, "%s node name %s pipe %u id %u", __func__,
 478                 node->name, node->pipe, node->id);
 479
 480         mutex_lock(&imgu->streaming_lock);
 481         if (imgu->streaming) {
 482                 r = -EBUSY;
 483                 mutex_unlock(&imgu->streaming_lock);
 484                 goto fail_return_bufs;
 485         }
 486         mutex_unlock(&imgu->streaming_lock);
 487
 488         if (!node->enabled) {
 489                 dev_err(dev, "IMGU node is not enabled");
 490                 r = -EINVAL;
 491                 goto fail_return_bufs;
 492         }
 493
 494         pipe = node->pipe;
 495         imgu_pipe = &imgu->imgu_pipe[pipe];
 496         atomic_set(&node->sequence, 0);
 497         r = video_device_pipeline_start(&node->vdev, &imgu_pipe->pipeline);
 498         if (r < 0)
 499                 goto fail_return_bufs;
 500
 501         if (!imgu_all_nodes_streaming(imgu, node))
 502                 return 0;
 503
 504         for_each_set_bit(pipe, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) {
 505                 r = v4l2_subdev_call(&imgu->imgu_pipe[pipe].imgu_sd.subdev,
 506                                      video, s_stream, 1);
 507                 if (r < 0)
 508                         goto fail_stop_pipeline;
 509         }
 510
 511         /* Start streaming of the whole pipeline now */
 512         dev_dbg(dev, "IMGU streaming is ready to start");
 513         mutex_lock(&imgu->streaming_lock);
 514         r = imgu_s_stream(imgu, true);
 515         if (!r)
 516                 imgu->streaming = true;
 517         mutex_unlock(&imgu->streaming_lock);
 518
 519         return 0;
 520
 521 fail_stop_pipeline:
 522         video_device_pipeline_stop(&node->vdev);
 523 fail_return_bufs:
 524         imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_QUEUED);
 525
 526         return r;
 527 }
 528
 529 static void imgu_vb2_stop_streaming(struct vb2_queue *vq)
 530 {
 531         struct imgu_media_pipe *imgu_pipe;
 532         struct imgu_device *imgu = vb2_get_drv_priv(vq);
 533         struct device *dev = &imgu->pci_dev->dev;
 534         struct imgu_video_device *node =
 535                 container_of(vq, struct imgu_video_device, vbq);
 536         int r;
 537         unsigned int pipe;
 538
 539         WARN_ON(!node->enabled);
 540
 541         pipe = node->pipe;
 542         dev_dbg(dev, "Try to stream off node [%u][%u]", pipe, node->id);
 543         imgu_pipe = &imgu->imgu_pipe[pipe];
 544         r = v4l2_subdev_call(&imgu_pipe->imgu_sd.subdev, video, s_stream, 0);
 545         if (r)
 546                 dev_err(&imgu->pci_dev->dev,
 547                         "failed to stop subdev streaming\n");
 548
 549         mutex_lock(&imgu->streaming_lock);
 550         /* Was this the first node with streaming disabled? */
 551         if (imgu->streaming && imgu_all_nodes_streaming(imgu, node)) {
 552                 /* Yes, really stop streaming now */
 553                 dev_dbg(dev, "IMGU streaming is ready to stop");
 554                 r = imgu_s_stream(imgu, false);
 555                 if (!r)
 556                         imgu->streaming = false;
 557         }
 558
 559         imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_ERROR);
 560         mutex_unlock(&imgu->streaming_lock);
 561
 562         video_device_pipeline_stop(&node->vdev);
 563 }
 564
 565 /******************** v4l2_ioctl_ops ********************/
 566
 567 #define VID_CAPTURE     0
 568 #define VID_OUTPUT      1
 569 #define DEF_VID_CAPTURE 0
 570 #define DEF_VID_OUTPUT  1
 571
 572 struct imgu_fmt {
 573         u32     fourcc;
 574         u16     type; /* VID_CAPTURE or VID_OUTPUT not both */
 575 };
 576
 577 /* format descriptions for capture and preview */
 578 static const struct imgu_fmt formats[] = {
 579         { V4L2_PIX_FMT_NV12, VID_CAPTURE },
 580         { V4L2_PIX_FMT_IPU3_SGRBG10, VID_OUTPUT },
 581         { V4L2_PIX_FMT_IPU3_SBGGR10, VID_OUTPUT },
 582         { V4L2_PIX_FMT_IPU3_SGBRG10, VID_OUTPUT },
 583         { V4L2_PIX_FMT_IPU3_SRGGB10, VID_OUTPUT },
 584 };
 585
 586 /* Find the first matched format, return default if not found */
 587 static const struct imgu_fmt *find_format(struct v4l2_format *f, u32 type)
 588 {
 589         unsigned int i;
 590
 591         for (i = 0; i < ARRAY_SIZE(formats); i++) {
 592                 if (formats[i].fourcc == f->fmt.pix_mp.pixelformat &&
 593                     formats[i].type == type)
 594                         return &formats[i];
 595         }
 596
 597         return type == VID_CAPTURE ? &formats[DEF_VID_CAPTURE] :
 598                                      &formats[DEF_VID_OUTPUT];
 599 }
 600
 601 static int imgu_vidioc_querycap(struct file *file, void *fh,
 602                                 struct v4l2_capability *cap)
 603 {
 604         struct imgu_device *imgu = video_drvdata(file);
 605
 606         strscpy(cap->driver, IMGU_NAME, sizeof(cap->driver));
 607         strscpy(cap->card, IMGU_NAME, sizeof(cap->card));
 608         snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
 609                  pci_name(imgu->pci_dev));
 610
 611         return 0;
 612 }
 613
 614 static int enum_fmts(struct v4l2_fmtdesc *f, u32 type)
 615 {
 616         unsigned int i, j;
 617
 618         if (f->mbus_code != 0 && f->mbus_code != MEDIA_BUS_FMT_FIXED)
 619                 return -EINVAL;
 620
 621         for (i = j = 0; i < ARRAY_SIZE(formats); ++i) {
 622                 if (formats[i].type == type) {
 623                         if (j == f->index)
 624                                 break;
 625                         ++j;
 626                 }
 627         }
 628
 629         if (i < ARRAY_SIZE(formats)) {
 630                 f->pixelformat = formats[i].fourcc;
 631                 return 0;
 632         }
 633
 634         return -EINVAL;
 635 }
 636
 637 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 638                                    struct v4l2_fmtdesc *f)
 639 {
 640         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 641                 return -EINVAL;
 642
 643         return enum_fmts(f, VID_CAPTURE);
 644 }
 645
 646 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
 647                                    struct v4l2_fmtdesc *f)
 648 {
 649         if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 650                 return -EINVAL;
 651
 652         return enum_fmts(f, VID_OUTPUT);
 653 }
 654
 655 /* Propagate forward always the format from the CIO2 subdev */
 656 static int imgu_vidioc_g_fmt(struct file *file, void *fh,
 657                              struct v4l2_format *f)
 658 {
 659         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 660
 661         f->fmt = node->vdev_fmt.fmt;
 662
 663         return 0;
 664 }
 665
 666 /*
 667  * Set input/output format. Unless it is just a try, this also resets
 668  * selections (ie. effective and BDS resolutions) to defaults.
 669  */
 670 static int imgu_fmt(struct imgu_device *imgu, unsigned int pipe, int node,
 671                     struct v4l2_format *f, bool try)
 672 {
 673         struct device *dev = &imgu->pci_dev->dev;
 674         struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL };
 675         struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL };
 676         struct v4l2_mbus_framefmt pad_fmt;
 677         unsigned int i, css_q;
 678         int ret;
 679         struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe];
 680         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
 681         struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd;
 682
 683         dev_dbg(dev, "set fmt node [%u][%u](try = %u)", pipe, node, try);
 684
 685         for (i = 0; i < IMGU_NODE_NUM; i++)
 686                 dev_dbg(dev, "IMGU pipe %u node %u enabled = %u",
 687                         pipe, i, imgu_pipe->nodes[i].enabled);
 688
 689         if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
 690                 css_pipe->vf_output_en = true;
 691
 692         if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
 693                 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
 694         else
 695                 css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
 696
 697         dev_dbg(dev, "IPU3 pipe %u pipe_id = %u", pipe, css_pipe->pipe_id);
 698
 699         css_q = imgu_node_to_queue(node);
 700         for (i = 0; i < IPU3_CSS_QUEUES; i++) {
 701                 unsigned int inode = imgu_map_node(imgu, i);
 702
 703                 /* Skip the meta node */
 704                 if (inode == IMGU_NODE_STAT_3A || inode == IMGU_NODE_PARAMS)
 705                         continue;
 706
 707                 /* CSS expects some format on OUT queue */
 708                 if (i != IPU3_CSS_QUEUE_OUT &&
 709                     !imgu_pipe->nodes[inode].enabled && !try) {
 710                         fmts[i] = NULL;
 711                         continue;
 712                 }
 713
 714                 if (i == css_q) {
 715                         fmts[i] = &f->fmt.pix_mp;
 716                         continue;
 717                 }
 718
 719                 if (try) {
 720                         fmts[i] = kmemdup(&imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp,
 721                                           sizeof(struct v4l2_pix_format_mplane),
 722                                           GFP_KERNEL);
 723                         if (!fmts[i]) {
 724                                 ret = -ENOMEM;
 725                                 goto out;
 726                         }
 727                 } else {
 728                         fmts[i] = &imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp;
 729                 }
 730
 731         }
 732
 733         if (!try) {
 734                 /* eff and bds res got by imgu_s_sel */
 735                 struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd;
 736
 737                 rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff;
 738                 rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds;
 739                 rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc;
 740
 741                 /* suppose that pad fmt was set by subdev s_fmt before */
 742                 pad_fmt = imgu_pipe->nodes[IMGU_NODE_IN].pad_fmt;
 743                 rects[IPU3_CSS_RECT_GDC]->width = pad_fmt.width;
 744                 rects[IPU3_CSS_RECT_GDC]->height = pad_fmt.height;
 745         }
 746
 747         if (!fmts[css_q]) {
 748                 ret = -EINVAL;
 749                 goto out;
 750         }
 751
 752         if (try)
 753                 ret = imgu_css_fmt_try(&imgu->css, fmts, rects, pipe);
 754         else
 755                 ret = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe);
 756
 757         /* ret is the binary number in the firmware blob */
 758         if (ret < 0)
 759                 goto out;
 760
 761         /*
 762          * imgu doesn't set the node to the value given by user
 763          * before we return success from this function, so set it here.
 764          */
 765         if (!try)
 766                 imgu_pipe->nodes[node].vdev_fmt.fmt.pix_mp = f->fmt.pix_mp;
 767
 768 out:
 769         if (try) {
 770                 for (i = 0; i < IPU3_CSS_QUEUES; i++)
 771                         if (i != css_q)
 772                                 kfree(fmts[i]);
 773         }
 774
 775         return ret;
 776 }
 777
 778 static int imgu_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
 779 {
 780         struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
 781         const struct imgu_fmt *fmt;
 782
 783         if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 784                 fmt = find_format(f, VID_CAPTURE);
 785         else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 786                 fmt = find_format(f, VID_OUTPUT);
 787         else
 788                 return -EINVAL;
 789
 790         pixm->pixelformat = fmt->fourcc;
 791
 792         return 0;
 793 }
 794
 795 static int imgu_vidioc_try_fmt(struct file *file, void *fh,
 796                                struct v4l2_format *f)
 797 {
 798         struct imgu_device *imgu = video_drvdata(file);
 799         struct device *dev = &imgu->pci_dev->dev;
 800         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 801         struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
 802         int r;
 803
 804         dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__,
 805                 pix_mp->width, pix_mp->height, node->id);
 806
 807         r = imgu_try_fmt(file, fh, f);
 808         if (r)
 809                 return r;
 810
 811         return imgu_fmt(imgu, node->pipe, node->id, f, true);
 812 }
 813
 814 static int imgu_vidioc_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
 815 {
 816         struct imgu_device *imgu = video_drvdata(file);
 817         struct device *dev = &imgu->pci_dev->dev;
 818         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 819         struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
 820         int r;
 821
 822         dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__,
 823                 pix_mp->width, pix_mp->height, node->id);
 824
 825         r = imgu_try_fmt(file, fh, f);
 826         if (r)
 827                 return r;
 828
 829         return imgu_fmt(imgu, node->pipe, node->id, f, false);
 830 }
 831
 832 struct imgu_meta_fmt {
 833         __u32 fourcc;
 834         char *name;
 835 };
 836
 837 /* From drivers/media/v4l2-core/v4l2-ioctl.c */
 838 static const struct imgu_meta_fmt meta_fmts[] = {
 839         { V4L2_META_FMT_IPU3_PARAMS, "IPU3 processing parameters" },
 840         { V4L2_META_FMT_IPU3_STAT_3A, "IPU3 3A statistics" },
 841 };
 842
 843 static int imgu_meta_enum_format(struct file *file, void *fh,
 844                                  struct v4l2_fmtdesc *fmt)
 845 {
 846         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 847         unsigned int i = fmt->type == V4L2_BUF_TYPE_META_OUTPUT ? 0 : 1;
 848
 849         /* Each node is dedicated to only one meta format */
 850         if (fmt->index > 0 || fmt->type != node->vbq.type)
 851                 return -EINVAL;
 852
 853         if (fmt->mbus_code != 0 && fmt->mbus_code != MEDIA_BUS_FMT_FIXED)
 854                 return -EINVAL;
 855
 856         strscpy(fmt->description, meta_fmts[i].name, sizeof(fmt->description));
 857         fmt->pixelformat = meta_fmts[i].fourcc;
 858
 859         return 0;
 860 }
 861
 862 static int imgu_vidioc_g_meta_fmt(struct file *file, void *fh,
 863                                   struct v4l2_format *f)
 864 {
 865         struct imgu_video_device *node = file_to_intel_imgu_node(file);
 866
 867         if (f->type != node->vbq.type)
 868                 return -EINVAL;
 869
 870         f->fmt = node->vdev_fmt.fmt;
 871
 872         return 0;
 873 }
 874
 875 /******************** function pointers ********************/
 876
 877 static const struct v4l2_subdev_internal_ops imgu_subdev_internal_ops = {
 878         .open = imgu_subdev_open,
 879 };
 880
 881 static const struct v4l2_subdev_core_ops imgu_subdev_core_ops = {
 882         .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
 883         .unsubscribe_event = v4l2_event_subdev_unsubscribe,
 884 };
 885
 886 static const struct v4l2_subdev_video_ops imgu_subdev_video_ops = {
 887         .s_stream = imgu_subdev_s_stream,
 888 };
 889
 890 static const struct v4l2_subdev_pad_ops imgu_subdev_pad_ops = {
 891         .link_validate = v4l2_subdev_link_validate_default,
 892         .get_fmt = imgu_subdev_get_fmt,
 893         .set_fmt = imgu_subdev_set_fmt,
 894         .get_selection = imgu_subdev_get_selection,
 895         .set_selection = imgu_subdev_set_selection,
 896 };
 897
 898 static const struct v4l2_subdev_ops imgu_subdev_ops = {
 899         .core = &imgu_subdev_core_ops,
 900         .video = &imgu_subdev_video_ops,
 901         .pad = &imgu_subdev_pad_ops,
 902 };
 903
 904 static const struct media_entity_operations imgu_media_ops = {
 905         .link_setup = imgu_link_setup,
 906         .link_validate = v4l2_subdev_link_validate,
 907 };
 908
 909 /****************** vb2_ops of the Q ********************/
 910
 911 static const struct vb2_ops imgu_vb2_ops = {
 912         .buf_init = imgu_vb2_buf_init,
 913         .buf_cleanup = imgu_vb2_buf_cleanup,
 914         .buf_queue = imgu_vb2_buf_queue,
 915         .queue_setup = imgu_vb2_queue_setup,
 916         .start_streaming = imgu_vb2_start_streaming,
 917         .stop_streaming = imgu_vb2_stop_streaming,
 918         .wait_prepare = vb2_ops_wait_prepare,
 919         .wait_finish = vb2_ops_wait_finish,
 920 };
 921
 922 /****************** v4l2_file_operations *****************/
 923
 924 static const struct v4l2_file_operations imgu_v4l2_fops = {
 925         .unlocked_ioctl = video_ioctl2,
 926         .open = v4l2_fh_open,
 927         .release = vb2_fop_release,
 928         .poll = vb2_fop_poll,
 929         .mmap = vb2_fop_mmap,
 930 };
 931
 932 /******************** v4l2_ioctl_ops ********************/
 933
 934 static const struct v4l2_ioctl_ops imgu_v4l2_ioctl_ops = {
 935         .vidioc_querycap = imgu_vidioc_querycap,
 936
 937         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
 938         .vidioc_g_fmt_vid_cap_mplane = imgu_vidioc_g_fmt,
 939         .vidioc_s_fmt_vid_cap_mplane = imgu_vidioc_s_fmt,
 940         .vidioc_try_fmt_vid_cap_mplane = imgu_vidioc_try_fmt,
 941
 942         .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
 943         .vidioc_g_fmt_vid_out_mplane = imgu_vidioc_g_fmt,
 944         .vidioc_s_fmt_vid_out_mplane = imgu_vidioc_s_fmt,
 945         .vidioc_try_fmt_vid_out_mplane = imgu_vidioc_try_fmt,
 946
 947         /* buffer queue management */
 948         .vidioc_reqbufs = vb2_ioctl_reqbufs,
 949         .vidioc_create_bufs = vb2_ioctl_create_bufs,
 950         .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
 951         .vidioc_querybuf = vb2_ioctl_querybuf,
 952         .vidioc_qbuf = vb2_ioctl_qbuf,
 953         .vidioc_dqbuf = vb2_ioctl_dqbuf,
 954         .vidioc_streamon = vb2_ioctl_streamon,
 955         .vidioc_streamoff = vb2_ioctl_streamoff,
 956         .vidioc_expbuf = vb2_ioctl_expbuf,
 957 };
 958
 959 static const struct v4l2_ioctl_ops imgu_v4l2_meta_ioctl_ops = {
 960         .vidioc_querycap = imgu_vidioc_querycap,
 961
 962         /* meta capture */
 963         .vidioc_enum_fmt_meta_cap = imgu_meta_enum_format,
 964         .vidioc_g_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
 965         .vidioc_s_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
 966         .vidioc_try_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
 967
 968         /* meta output */
 969         .vidioc_enum_fmt_meta_out = imgu_meta_enum_format,
 970         .vidioc_g_fmt_meta_out = imgu_vidioc_g_meta_fmt,
 971         .vidioc_s_fmt_meta_out = imgu_vidioc_g_meta_fmt,
 972         .vidioc_try_fmt_meta_out = imgu_vidioc_g_meta_fmt,
 973
 974         .vidioc_reqbufs = vb2_ioctl_reqbufs,
 975         .vidioc_create_bufs = vb2_ioctl_create_bufs,
 976         .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
 977         .vidioc_querybuf = vb2_ioctl_querybuf,
 978         .vidioc_qbuf = vb2_ioctl_qbuf,
 979         .vidioc_dqbuf = vb2_ioctl_dqbuf,
 980         .vidioc_streamon = vb2_ioctl_streamon,
 981         .vidioc_streamoff = vb2_ioctl_streamoff,
 982         .vidioc_expbuf = vb2_ioctl_expbuf,
 983 };
 984
 985 static int imgu_sd_s_ctrl(struct v4l2_ctrl *ctrl)
 986 {
 987         struct imgu_v4l2_subdev *imgu_sd =
 988                 container_of(ctrl->handler, struct imgu_v4l2_subdev, ctrl_handler);
 989         struct imgu_device *imgu = v4l2_get_subdevdata(&imgu_sd->subdev);
 990         struct device *dev = &imgu->pci_dev->dev;
 991
 992         dev_dbg(dev, "set val %d to ctrl 0x%8x for subdev %u",
 993                 ctrl->val, ctrl->id, imgu_sd->pipe);
 994
 995         switch (ctrl->id) {
 996         case V4L2_CID_INTEL_IPU3_MODE:
 997                 atomic_set(&imgu_sd->running_mode, ctrl->val);
 998                 return 0;
 999         default:
1000                 return -EINVAL;
1001         }
1002 }
1003
1004 static const struct v4l2_ctrl_ops imgu_subdev_ctrl_ops = {
1005         .s_ctrl = imgu_sd_s_ctrl,
1006 };
1007
1008 static const char * const imgu_ctrl_mode_strings[] = {
1009         "Video mode",
1010         "Still mode",
1011 };
1012
1013 static const struct v4l2_ctrl_config imgu_subdev_ctrl_mode = {
1014         .ops = &imgu_subdev_ctrl_ops,
1015         .id = V4L2_CID_INTEL_IPU3_MODE,
1016         .name = "IPU3 Pipe Mode",
1017         .type = V4L2_CTRL_TYPE_MENU,
1018         .max = ARRAY_SIZE(imgu_ctrl_mode_strings) - 1,
1019         .def = IPU3_RUNNING_MODE_VIDEO,
1020         .qmenu = imgu_ctrl_mode_strings,
1021 };
1022
1023 /******************** Framework registration ********************/
1024
1025 /* helper function to config node's video properties */
1026 static void imgu_node_to_v4l2(u32 node, struct video_device *vdev,
1027                               struct v4l2_format *f)
1028 {
1029         u32 cap;
1030
1031         /* Should not happen */
1032         WARN_ON(node >= IMGU_NODE_NUM);
1033
1034         switch (node) {
1035         case IMGU_NODE_IN:
1036                 cap = V4L2_CAP_VIDEO_OUTPUT_MPLANE;
1037                 f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1038                 vdev->ioctl_ops = &imgu_v4l2_ioctl_ops;
1039                 break;
1040         case IMGU_NODE_PARAMS:
1041                 cap = V4L2_CAP_META_OUTPUT;
1042                 f->type = V4L2_BUF_TYPE_META_OUTPUT;
1043                 f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_PARAMS;
1044                 vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops;
1045                 imgu_css_meta_fmt_set(&f->fmt.meta);
1046                 break;
1047         case IMGU_NODE_STAT_3A:
1048                 cap = V4L2_CAP_META_CAPTURE;
1049                 f->type = V4L2_BUF_TYPE_META_CAPTURE;
1050                 f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_STAT_3A;
1051                 vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops;
1052                 imgu_css_meta_fmt_set(&f->fmt.meta);
1053                 break;
1054         default:
1055                 cap = V4L2_CAP_VIDEO_CAPTURE_MPLANE;
1056                 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1057                 vdev->ioctl_ops = &imgu_v4l2_ioctl_ops;
1058         }
1059
1060         vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_IO_MC | cap;
1061 }
1062
1063 static int imgu_v4l2_subdev_register(struct imgu_device *imgu,
1064                                      struct imgu_v4l2_subdev *imgu_sd,
1065                                      unsigned int pipe)
1066 {
1067         int i, r;
1068         struct v4l2_ctrl_handler *hdl = &imgu_sd->ctrl_handler;
1069         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1070
1071         /* Initialize subdev media entity */
1072         r = media_entity_pads_init(&imgu_sd->subdev.entity, IMGU_NODE_NUM,
1073                                    imgu_sd->subdev_pads);
1074         if (r) {
1075                 dev_err(&imgu->pci_dev->dev,
1076                         "failed initialize subdev media entity (%d)\n", r);
1077                 return r;
1078         }
1079         imgu_sd->subdev.entity.ops = &imgu_media_ops;
1080         for (i = 0; i < IMGU_NODE_NUM; i++) {
1081                 imgu_sd->subdev_pads[i].flags = imgu_pipe->nodes[i].output ?
1082                         MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
1083         }
1084
1085         /* Initialize subdev */
1086         v4l2_subdev_init(&imgu_sd->subdev, &imgu_subdev_ops);
1087         imgu_sd->subdev.entity.function = MEDIA_ENT_F_PROC_VIDEO_STATISTICS;
1088         imgu_sd->subdev.internal_ops = &imgu_subdev_internal_ops;
1089         imgu_sd->subdev.flags = V4L2_SUBDEV_FL_HAS_DEVNODE |
1090                                 V4L2_SUBDEV_FL_HAS_EVENTS;
1091         snprintf(imgu_sd->subdev.name, sizeof(imgu_sd->subdev.name),
1092                  "%s %u", IMGU_NAME, pipe);
1093         v4l2_set_subdevdata(&imgu_sd->subdev, imgu);
1094         atomic_set(&imgu_sd->running_mode, IPU3_RUNNING_MODE_VIDEO);
1095         v4l2_ctrl_handler_init(hdl, 1);
1096         imgu_sd->subdev.ctrl_handler = hdl;
1097         imgu_sd->ctrl = v4l2_ctrl_new_custom(hdl, &imgu_subdev_ctrl_mode, NULL);
1098         if (hdl->error) {
1099                 r = hdl->error;
1100                 dev_err(&imgu->pci_dev->dev,
1101                         "failed to create subdev v4l2 ctrl with err %d", r);
1102                 goto fail_subdev;
1103         }
1104         r = v4l2_device_register_subdev(&imgu->v4l2_dev, &imgu_sd->subdev);
1105         if (r) {
1106                 dev_err(&imgu->pci_dev->dev,
1107                         "failed initialize subdev (%d)\n", r);
1108                 goto fail_subdev;
1109         }
1110
1111         imgu_sd->pipe = pipe;
1112         return 0;
1113
1114 fail_subdev:
1115         v4l2_ctrl_handler_free(imgu_sd->subdev.ctrl_handler);
1116         media_entity_cleanup(&imgu_sd->subdev.entity);
1117
1118         return r;
1119 }
1120
1121 static int imgu_v4l2_node_setup(struct imgu_device *imgu, unsigned int pipe,
1122                                 int node_num)
1123 {
1124         int r;
1125         u32 flags;
1126         struct v4l2_mbus_framefmt def_bus_fmt = { 0 };
1127         struct v4l2_pix_format_mplane def_pix_fmt = { 0 };
1128         struct device *dev = &imgu->pci_dev->dev;
1129         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1130         struct v4l2_subdev *sd = &imgu_pipe->imgu_sd.subdev;
1131         struct imgu_video_device *node = &imgu_pipe->nodes[node_num];
1132         struct video_device *vdev = &node->vdev;
1133         struct vb2_queue *vbq = &node->vbq;
1134
1135         /* Initialize formats to default values */
1136         def_bus_fmt.width = 1920;
1137         def_bus_fmt.height = 1080;
1138         def_bus_fmt.code = MEDIA_BUS_FMT_FIXED;
1139         def_bus_fmt.field = V4L2_FIELD_NONE;
1140         def_bus_fmt.colorspace = V4L2_COLORSPACE_RAW;
1141         def_bus_fmt.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1142         def_bus_fmt.quantization = V4L2_QUANTIZATION_DEFAULT;
1143         def_bus_fmt.xfer_func = V4L2_XFER_FUNC_DEFAULT;
1144
1145         def_pix_fmt.width = def_bus_fmt.width;
1146         def_pix_fmt.height = def_bus_fmt.height;
1147         def_pix_fmt.field = def_bus_fmt.field;
1148         def_pix_fmt.num_planes = 1;
1149         def_pix_fmt.plane_fmt[0].bytesperline =
1150                 imgu_bytesperline(def_pix_fmt.width,
1151                                   IMGU_ABI_FRAME_FORMAT_RAW_PACKED);
1152         def_pix_fmt.plane_fmt[0].sizeimage =
1153                 def_pix_fmt.height * def_pix_fmt.plane_fmt[0].bytesperline;
1154         def_pix_fmt.flags = 0;
1155         def_pix_fmt.colorspace = def_bus_fmt.colorspace;
1156         def_pix_fmt.ycbcr_enc = def_bus_fmt.ycbcr_enc;
1157         def_pix_fmt.quantization = def_bus_fmt.quantization;
1158         def_pix_fmt.xfer_func = def_bus_fmt.xfer_func;
1159
1160         /* Initialize miscellaneous variables */
1161         mutex_init(&node->lock);
1162         INIT_LIST_HEAD(&node->buffers);
1163
1164         /* Initialize formats to default values */
1165         node->pad_fmt = def_bus_fmt;
1166         node->id = node_num;
1167         node->pipe = pipe;
1168         imgu_node_to_v4l2(node_num, vdev, &node->vdev_fmt);
1169         if (node->vdev_fmt.type ==
1170             V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ||
1171             node->vdev_fmt.type ==
1172             V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
1173                 def_pix_fmt.pixelformat = node->output ?
1174                         V4L2_PIX_FMT_IPU3_SGRBG10 :
1175                         V4L2_PIX_FMT_NV12;
1176                 node->vdev_fmt.fmt.pix_mp = def_pix_fmt;
1177         }
1178
1179         /* Initialize media entities */
1180         r = media_entity_pads_init(&vdev->entity, 1, &node->vdev_pad);
1181         if (r) {
1182                 dev_err(dev, "failed initialize media entity (%d)\n", r);
1183                 mutex_destroy(&node->lock);
1184                 return r;
1185         }
1186         node->vdev_pad.flags = node->output ?
1187                 MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
1188         vdev->entity.ops = NULL;
1189
1190         /* Initialize vbq */
1191         vbq->type = node->vdev_fmt.type;
1192         vbq->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF;
1193         vbq->ops = &imgu_vb2_ops;
1194         vbq->mem_ops = &vb2_dma_sg_memops;
1195         if (imgu->buf_struct_size <= 0)
1196                 imgu->buf_struct_size =
1197                         sizeof(struct imgu_vb2_buffer);
1198         vbq->buf_struct_size = imgu->buf_struct_size;
1199         vbq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1200         /* can streamon w/o buffers */
1201         vbq->min_buffers_needed = 0;
1202         vbq->drv_priv = imgu;
1203         vbq->lock = &node->lock;
1204         r = vb2_queue_init(vbq);
1205         if (r) {
1206                 dev_err(dev, "failed to initialize video queue (%d)", r);
1207                 media_entity_cleanup(&vdev->entity);
1208                 return r;
1209         }
1210
1211         /* Initialize vdev */
1212         snprintf(vdev->name, sizeof(vdev->name), "%s %u %s",
1213                  IMGU_NAME, pipe, node->name);
1214         vdev->release = video_device_release_empty;
1215         vdev->fops = &imgu_v4l2_fops;
1216         vdev->lock = &node->lock;
1217         vdev->v4l2_dev = &imgu->v4l2_dev;
1218         vdev->queue = &node->vbq;
1219         vdev->vfl_dir = node->output ? VFL_DIR_TX : VFL_DIR_RX;
1220         video_set_drvdata(vdev, imgu);
1221         r = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1222         if (r) {
1223                 dev_err(dev, "failed to register video device (%d)", r);
1224                 media_entity_cleanup(&vdev->entity);
1225                 return r;
1226         }
1227
1228         /* Create link between video node and the subdev pad */
1229         flags = 0;
1230         if (node->enabled)
1231                 flags |= MEDIA_LNK_FL_ENABLED;
1232         if (node->output) {
1233                 r = media_create_pad_link(&vdev->entity, 0, &sd->entity,
1234                                           node_num, flags);
1235         } else {
1236                 if (node->id == IMGU_NODE_OUT) {
1237                         flags |= MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE;
1238                         node->enabled = true;
1239                 }
1240
1241                 r = media_create_pad_link(&sd->entity, node_num, &vdev->entity,
1242                                           0, flags);
1243         }
1244         if (r) {
1245                 dev_err(dev, "failed to create pad link (%d)", r);
1246                 video_unregister_device(vdev);
1247                 return r;
1248         }
1249
1250         return 0;
1251 }
1252
1253 static void imgu_v4l2_nodes_cleanup_pipe(struct imgu_device *imgu,
1254                                          unsigned int pipe, int node)
1255 {
1256         int i;
1257         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
1258
1259         for (i = 0; i < node; i++) {
1260                 video_unregister_device(&imgu_pipe->nodes[i].vdev);
1261                 media_entity_cleanup(&imgu_pipe->nodes[i].vdev.entity);
1262                 mutex_destroy(&imgu_pipe->nodes[i].lock);
1263         }
1264 }
1265
1266 static int imgu_v4l2_nodes_setup_pipe(struct imgu_device *imgu, int pipe)
1267 {
1268         int i;
1269
1270         for (i = 0; i < IMGU_NODE_NUM; i++) {
1271                 int r = imgu_v4l2_node_setup(imgu, pipe, i);
1272
1273                 if (r) {
1274                         imgu_v4l2_nodes_cleanup_pipe(imgu, pipe, i);
1275                         return r;
1276                 }
1277         }
1278         return 0;
1279 }
1280
1281 static void imgu_v4l2_subdev_cleanup(struct imgu_device *imgu, unsigned int i)
1282 {
1283         struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[i];
1284
1285         v4l2_device_unregister_subdev(&imgu_pipe->imgu_sd.subdev);
1286         v4l2_ctrl_handler_free(imgu_pipe->imgu_sd.subdev.ctrl_handler);
1287         media_entity_cleanup(&imgu_pipe->imgu_sd.subdev.entity);
1288 }
1289
1290 static void imgu_v4l2_cleanup_pipes(struct imgu_device *imgu, unsigned int pipe)
1291 {
1292         int i;
1293
1294         for (i = 0; i < pipe; i++) {
1295                 imgu_v4l2_nodes_cleanup_pipe(imgu, i, IMGU_NODE_NUM);
1296                 imgu_v4l2_subdev_cleanup(imgu, i);
1297         }
1298 }
1299
1300 static int imgu_v4l2_register_pipes(struct imgu_device *imgu)
1301 {
1302         struct imgu_media_pipe *imgu_pipe;
1303         int i, r;
1304
1305         for (i = 0; i < IMGU_MAX_PIPE_NUM; i++) {
1306                 imgu_pipe = &imgu->imgu_pipe[i];
1307                 r = imgu_v4l2_subdev_register(imgu, &imgu_pipe->imgu_sd, i);
1308                 if (r) {
1309                         dev_err(&imgu->pci_dev->dev,
1310                                 "failed to register subdev%u ret (%d)\n", i, r);
1311                         goto pipes_cleanup;
1312                 }
1313                 r = imgu_v4l2_nodes_setup_pipe(imgu, i);
1314                 if (r) {
1315                         imgu_v4l2_subdev_cleanup(imgu, i);
1316                         goto pipes_cleanup;
1317                 }
1318         }
1319
1320         return 0;
1321
1322 pipes_cleanup:
1323         imgu_v4l2_cleanup_pipes(imgu, i);
1324         return r;
1325 }
1326
1327 int imgu_v4l2_register(struct imgu_device *imgu)
1328 {
1329         int r;
1330
1331         /* Initialize miscellaneous variables */
1332         imgu->streaming = false;
1333
1334         /* Set up media device */
1335         media_device_pci_init(&imgu->media_dev, imgu->pci_dev, IMGU_NAME);
1336
1337         /* Set up v4l2 device */
1338         imgu->v4l2_dev.mdev = &imgu->media_dev;
1339         imgu->v4l2_dev.ctrl_handler = NULL;
1340         r = v4l2_device_register(&imgu->pci_dev->dev, &imgu->v4l2_dev);
1341         if (r) {
1342                 dev_err(&imgu->pci_dev->dev,
1343                         "failed to register V4L2 device (%d)\n", r);
1344                 goto fail_v4l2_dev;
1345         }
1346
1347         r = imgu_v4l2_register_pipes(imgu);
1348         if (r) {
1349                 dev_err(&imgu->pci_dev->dev,
1350                         "failed to register pipes (%d)\n", r);
1351                 goto fail_v4l2_pipes;
1352         }
1353
1354         r = v4l2_device_register_subdev_nodes(&imgu->v4l2_dev);
1355         if (r) {
1356                 dev_err(&imgu->pci_dev->dev,
1357                         "failed to register subdevs (%d)\n", r);
1358                 goto fail_subdevs;
1359         }
1360
1361         r = media_device_register(&imgu->media_dev);
1362         if (r) {
1363                 dev_err(&imgu->pci_dev->dev,
1364                         "failed to register media device (%d)\n", r);
1365                 goto fail_subdevs;
1366         }
1367
1368         return 0;
1369
1370 fail_subdevs:
1371         imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM);
1372 fail_v4l2_pipes:
1373         v4l2_device_unregister(&imgu->v4l2_dev);
1374 fail_v4l2_dev:
1375         media_device_cleanup(&imgu->media_dev);
1376
1377         return r;
1378 }
1379
1380 int imgu_v4l2_unregister(struct imgu_device *imgu)
1381 {
1382         media_device_unregister(&imgu->media_dev);
1383         imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM);
1384         v4l2_device_unregister(&imgu->v4l2_dev);
1385         media_device_cleanup(&imgu->media_dev);
1386
1387         return 0;
1388 }
1389
1390 void imgu_v4l2_buffer_done(struct vb2_buffer *vb,
1391                            enum vb2_buffer_state state)
1392 {
1393         struct imgu_vb2_buffer *b =
1394                 container_of(vb, struct imgu_vb2_buffer, vbb.vb2_buf);
1395
1396         list_del(&b->list);
1397         vb2_buffer_done(&b->vbb.vb2_buf, state);
1398 }