drivers/media/platform/vicodec/vicodec-core.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * A virtual codec example device.
   4  *
   5  * Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
   6  *
   7  * This is a virtual codec device driver for testing the codec framework.
   8  * It simulates a device that uses memory buffers for both source and
   9  * destination and encodes or decodes the data.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/delay.h>
  14 #include <linux/fs.h>
  15 #include <linux/sched.h>
  16 #include <linux/slab.h>
  17
  18 #include <linux/platform_device.h>
  19 #include <media/v4l2-mem2mem.h>
  20 #include <media/v4l2-device.h>
  21 #include <media/v4l2-ioctl.h>
  22 #include <media/v4l2-ctrls.h>
  23 #include <media/v4l2-event.h>
  24 #include <media/videobuf2-vmalloc.h>
  25
  26 #include "codec-v4l2-fwht.h"
  27
  28 MODULE_DESCRIPTION("Virtual codec device");
  29 MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>");
  30 MODULE_LICENSE("GPL v2");
  31
  32 static bool multiplanar;
  33 module_param(multiplanar, bool, 0444);
  34 MODULE_PARM_DESC(multiplanar,
  35                  " use multi-planar API instead of single-planar API");
  36
  37 static unsigned int debug;
  38 module_param(debug, uint, 0644);
  39 MODULE_PARM_DESC(debug, " activates debug info");
  40
  41 #define VICODEC_NAME            "vicodec"
  42 #define MAX_WIDTH               4096U
  43 #define MIN_WIDTH               640U
  44 #define MAX_HEIGHT              2160U
  45 #define MIN_HEIGHT              480U
  46
  47 #define dprintk(dev, fmt, arg...) \
  48         v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
  49
  50
  51 struct pixfmt_info {
  52         u32 id;
  53         unsigned int bytesperline_mult;
  54         unsigned int sizeimage_mult;
  55         unsigned int sizeimage_div;
  56         unsigned int luma_step;
  57         unsigned int chroma_step;
  58         /* Chroma plane subsampling */
  59         unsigned int width_div;
  60         unsigned int height_div;
  61 };
  62
  63 static const struct v4l2_fwht_pixfmt_info pixfmt_fwht = {
  64         V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1
  65 };
  66
  67 static void vicodec_dev_release(struct device *dev)
  68 {
  69 }
  70
  71 static struct platform_device vicodec_pdev = {
  72         .name           = VICODEC_NAME,
  73         .dev.release    = vicodec_dev_release,
  74 };
  75
  76 /* Per-queue, driver-specific private data */
  77 struct vicodec_q_data {
  78         unsigned int            width;
  79         unsigned int            height;
  80         unsigned int            sizeimage;
  81         unsigned int            sequence;
  82         const struct v4l2_fwht_pixfmt_info *info;
  83 };
  84
  85 enum {
  86         V4L2_M2M_SRC = 0,
  87         V4L2_M2M_DST = 1,
  88 };
  89
  90 struct vicodec_dev {
  91         struct v4l2_device      v4l2_dev;
  92         struct video_device     enc_vfd;
  93         struct video_device     dec_vfd;
  94 #ifdef CONFIG_MEDIA_CONTROLLER
  95         struct media_device     mdev;
  96 #endif
  97
  98         struct mutex            enc_mutex;
  99         struct mutex            dec_mutex;
 100         spinlock_t              enc_lock;
 101         spinlock_t              dec_lock;
 102
 103         struct v4l2_m2m_dev     *enc_dev;
 104         struct v4l2_m2m_dev     *dec_dev;
 105 };
 106
 107 struct vicodec_ctx {
 108         struct v4l2_fh          fh;
 109         struct vicodec_dev      *dev;
 110         bool                    is_enc;
 111         spinlock_t              *lock;
 112
 113         struct v4l2_ctrl_handler hdl;
 114
 115         struct vb2_v4l2_buffer *last_src_buf;
 116         struct vb2_v4l2_buffer *last_dst_buf;
 117
 118         /* Source and destination queue data */
 119         struct vicodec_q_data   q_data[2];
 120         struct v4l2_fwht_state  state;
 121
 122         u32                     cur_buf_offset;
 123         u32                     comp_max_size;
 124         u32                     comp_size;
 125         u32                     comp_magic_cnt;
 126         u32                     comp_frame_size;
 127         bool                    comp_has_frame;
 128         bool                    comp_has_next_frame;
 129 };
 130
 131 static inline struct vicodec_ctx *file2ctx(struct file *file)
 132 {
 133         return container_of(file->private_data, struct vicodec_ctx, fh);
 134 }
 135
 136 static struct vicodec_q_data *get_q_data(struct vicodec_ctx *ctx,
 137                                          enum v4l2_buf_type type)
 138 {
 139         switch (type) {
 140         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 141         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 142                 return &ctx->q_data[V4L2_M2M_SRC];
 143         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 144         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 145                 return &ctx->q_data[V4L2_M2M_DST];
 146         default:
 147                 WARN_ON(1);
 148                 break;
 149         }
 150         return NULL;
 151 }
 152
 153 static int device_process(struct vicodec_ctx *ctx,
 154                           struct vb2_v4l2_buffer *in_vb,
 155                           struct vb2_v4l2_buffer *out_vb)
 156 {
 157         struct vicodec_dev *dev = ctx->dev;
 158         struct vicodec_q_data *q_cap;
 159         struct v4l2_fwht_state *state = &ctx->state;
 160         u8 *p_in, *p_out;
 161         int ret;
 162
 163         q_cap = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 164         if (ctx->is_enc)
 165                 p_in = vb2_plane_vaddr(&in_vb->vb2_buf, 0);
 166         else
 167                 p_in = state->compressed_frame;
 168         p_out = vb2_plane_vaddr(&out_vb->vb2_buf, 0);
 169         if (!p_in || !p_out) {
 170                 v4l2_err(&dev->v4l2_dev,
 171                          "Acquiring kernel pointers to buffers failed\n");
 172                 return -EFAULT;
 173         }
 174
 175         if (ctx->is_enc) {
 176                 struct vicodec_q_data *q_out;
 177
 178                 q_out = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 179                 state->info = q_out->info;
 180                 ret = v4l2_fwht_encode(state, p_in, p_out);
 181                 if (ret < 0)
 182                         return ret;
 183                 vb2_set_plane_payload(&out_vb->vb2_buf, 0, ret);
 184         } else {
 185                 state->info = q_cap->info;
 186                 ret = v4l2_fwht_decode(state, p_in, p_out);
 187                 if (ret < 0)
 188                         return ret;
 189                 vb2_set_plane_payload(&out_vb->vb2_buf, 0, q_cap->sizeimage);
 190         }
 191
 192         out_vb->sequence = q_cap->sequence++;
 193         out_vb->vb2_buf.timestamp = in_vb->vb2_buf.timestamp;
 194
 195         if (in_vb->flags & V4L2_BUF_FLAG_TIMECODE)
 196                 out_vb->timecode = in_vb->timecode;
 197         out_vb->field = in_vb->field;
 198         out_vb->flags &= ~V4L2_BUF_FLAG_LAST;
 199         out_vb->flags |= in_vb->flags &
 200                 (V4L2_BUF_FLAG_TIMECODE |
 201                  V4L2_BUF_FLAG_KEYFRAME |
 202                  V4L2_BUF_FLAG_PFRAME |
 203                  V4L2_BUF_FLAG_BFRAME |
 204                  V4L2_BUF_FLAG_TSTAMP_SRC_MASK);
 205
 206         return 0;
 207 }
 208
 209 /*
 210  * mem2mem callbacks
 211  */
 212
 213 /* device_run() - prepares and starts the device */
 214 static void device_run(void *priv)
 215 {
 216         static const struct v4l2_event eos_event = {
 217                 .type = V4L2_EVENT_EOS
 218         };
 219         struct vicodec_ctx *ctx = priv;
 220         struct vicodec_dev *dev = ctx->dev;
 221         struct vb2_v4l2_buffer *src_buf, *dst_buf;
 222         struct vicodec_q_data *q_out;
 223         u32 state;
 224
 225         src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 226         dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
 227         q_out = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 228
 229         state = VB2_BUF_STATE_DONE;
 230         if (device_process(ctx, src_buf, dst_buf))
 231                 state = VB2_BUF_STATE_ERROR;
 232         ctx->last_dst_buf = dst_buf;
 233
 234         spin_lock(ctx->lock);
 235         if (!ctx->comp_has_next_frame && src_buf == ctx->last_src_buf) {
 236                 dst_buf->flags |= V4L2_BUF_FLAG_LAST;
 237                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
 238         }
 239         if (ctx->is_enc) {
 240                 src_buf->sequence = q_out->sequence++;
 241                 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 242                 v4l2_m2m_buf_done(src_buf, state);
 243         } else if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == ctx->cur_buf_offset) {
 244                 src_buf->sequence = q_out->sequence++;
 245                 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 246                 v4l2_m2m_buf_done(src_buf, state);
 247                 ctx->cur_buf_offset = 0;
 248                 ctx->comp_has_next_frame = false;
 249         }
 250         v4l2_m2m_buf_done(dst_buf, state);
 251         ctx->comp_size = 0;
 252         ctx->comp_magic_cnt = 0;
 253         ctx->comp_has_frame = false;
 254         spin_unlock(ctx->lock);
 255
 256         if (ctx->is_enc)
 257                 v4l2_m2m_job_finish(dev->enc_dev, ctx->fh.m2m_ctx);
 258         else
 259                 v4l2_m2m_job_finish(dev->dec_dev, ctx->fh.m2m_ctx);
 260 }
 261
 262 static void job_remove_out_buf(struct vicodec_ctx *ctx, u32 state)
 263 {
 264         struct vb2_v4l2_buffer *src_buf;
 265         struct vicodec_q_data *q_out;
 266
 267         q_out = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 268         spin_lock(ctx->lock);
 269         src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 270         src_buf->sequence = q_out->sequence++;
 271         v4l2_m2m_buf_done(src_buf, state);
 272         ctx->cur_buf_offset = 0;
 273         spin_unlock(ctx->lock);
 274 }
 275
 276 static int job_ready(void *priv)
 277 {
 278         static const u8 magic[] = {
 279                 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff
 280         };
 281         struct vicodec_ctx *ctx = priv;
 282         struct vb2_v4l2_buffer *src_buf;
 283         u8 *p_out;
 284         u8 *p;
 285         u32 sz;
 286         u32 state;
 287
 288         if (ctx->is_enc || ctx->comp_has_frame)
 289                 return 1;
 290
 291 restart:
 292         ctx->comp_has_next_frame = false;
 293         src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 294         if (!src_buf)
 295                 return 0;
 296         p_out = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
 297         sz = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
 298         p = p_out + ctx->cur_buf_offset;
 299
 300         state = VB2_BUF_STATE_DONE;
 301
 302         if (!ctx->comp_size) {
 303                 state = VB2_BUF_STATE_ERROR;
 304                 for (; p < p_out + sz; p++) {
 305                         u32 copy;
 306
 307                         p = memchr(p, magic[ctx->comp_magic_cnt], sz);
 308                         if (!p) {
 309                                 ctx->comp_magic_cnt = 0;
 310                                 break;
 311                         }
 312                         copy = sizeof(magic) - ctx->comp_magic_cnt;
 313                         if (p_out + sz - p < copy)
 314                                 copy = p_out + sz - p;
 315                         memcpy(ctx->state.compressed_frame + ctx->comp_magic_cnt,
 316                                p, copy);
 317                         ctx->comp_magic_cnt += copy;
 318                         if (!memcmp(ctx->state.compressed_frame, magic,
 319                                     ctx->comp_magic_cnt)) {
 320                                 p += copy;
 321                                 state = VB2_BUF_STATE_DONE;
 322                                 break;
 323                         }
 324                         ctx->comp_magic_cnt = 0;
 325                 }
 326                 if (ctx->comp_magic_cnt < sizeof(magic)) {
 327                         job_remove_out_buf(ctx, state);
 328                         goto restart;
 329                 }
 330                 ctx->comp_size = sizeof(magic);
 331         }
 332         if (ctx->comp_size < sizeof(struct fwht_cframe_hdr)) {
 333                 struct fwht_cframe_hdr *p_hdr =
 334                         (struct fwht_cframe_hdr *)ctx->state.compressed_frame;
 335                 u32 copy = sizeof(struct fwht_cframe_hdr) - ctx->comp_size;
 336
 337                 if (copy > p_out + sz - p)
 338                         copy = p_out + sz - p;
 339                 memcpy(ctx->state.compressed_frame + ctx->comp_size,
 340                        p, copy);
 341                 p += copy;
 342                 ctx->comp_size += copy;
 343                 if (ctx->comp_size < sizeof(struct fwht_cframe_hdr)) {
 344                         job_remove_out_buf(ctx, state);
 345                         goto restart;
 346                 }
 347                 ctx->comp_frame_size = ntohl(p_hdr->size) + sizeof(*p_hdr);
 348                 if (ctx->comp_frame_size > ctx->comp_max_size)
 349                         ctx->comp_frame_size = ctx->comp_max_size;
 350         }
 351         if (ctx->comp_size < ctx->comp_frame_size) {
 352                 u32 copy = ctx->comp_frame_size - ctx->comp_size;
 353
 354                 if (copy > p_out + sz - p)
 355                         copy = p_out + sz - p;
 356                 memcpy(ctx->state.compressed_frame + ctx->comp_size,
 357                        p, copy);
 358                 p += copy;
 359                 ctx->comp_size += copy;
 360                 if (ctx->comp_size < ctx->comp_frame_size) {
 361                         job_remove_out_buf(ctx, state);
 362                         goto restart;
 363                 }
 364         }
 365         ctx->cur_buf_offset = p - p_out;
 366         ctx->comp_has_frame = true;
 367         ctx->comp_has_next_frame = false;
 368         if (sz - ctx->cur_buf_offset >= sizeof(struct fwht_cframe_hdr)) {
 369                 struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p;
 370                 u32 frame_size = ntohl(p_hdr->size);
 371                 u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr);
 372
 373                 if (!memcmp(p, magic, sizeof(magic)))
 374                         ctx->comp_has_next_frame = remaining >= frame_size;
 375         }
 376         return 1;
 377 }
 378
 379 /*
 380  * video ioctls
 381  */
 382
 383 static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt)
 384 {
 385         const struct v4l2_fwht_pixfmt_info *info =
 386                 v4l2_fwht_find_pixfmt(fmt);
 387
 388         if (!info)
 389                 info = v4l2_fwht_get_pixfmt(0);
 390         return info;
 391 }
 392
 393 static int vidioc_querycap(struct file *file, void *priv,
 394                            struct v4l2_capability *cap)
 395 {
 396         strncpy(cap->driver, VICODEC_NAME, sizeof(cap->driver) - 1);
 397         strncpy(cap->card, VICODEC_NAME, sizeof(cap->card) - 1);
 398         snprintf(cap->bus_info, sizeof(cap->bus_info),
 399                         "platform:%s", VICODEC_NAME);
 400         cap->device_caps =  V4L2_CAP_STREAMING |
 401                             (multiplanar ?
 402                              V4L2_CAP_VIDEO_M2M_MPLANE :
 403                              V4L2_CAP_VIDEO_M2M);
 404         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 405         return 0;
 406 }
 407
 408 static int enum_fmt(struct v4l2_fmtdesc *f, bool is_enc, bool is_out)
 409 {
 410         bool is_uncomp = (is_enc && is_out) || (!is_enc && !is_out);
 411
 412         if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar)
 413                 return -EINVAL;
 414         if (!V4L2_TYPE_IS_MULTIPLANAR(f->type) && multiplanar)
 415                 return -EINVAL;
 416
 417         if (is_uncomp) {
 418                 const struct v4l2_fwht_pixfmt_info *info =
 419                         v4l2_fwht_get_pixfmt(f->index);
 420
 421                 if (!info)
 422                         return -EINVAL;
 423                 f->pixelformat = info->id;
 424         } else {
 425                 if (f->index)
 426                         return -EINVAL;
 427                 f->pixelformat = V4L2_PIX_FMT_FWHT;
 428         }
 429         return 0;
 430 }
 431
 432 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 433                                    struct v4l2_fmtdesc *f)
 434 {
 435         struct vicodec_ctx *ctx = file2ctx(file);
 436
 437         return enum_fmt(f, ctx->is_enc, false);
 438 }
 439
 440 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
 441                                    struct v4l2_fmtdesc *f)
 442 {
 443         struct vicodec_ctx *ctx = file2ctx(file);
 444
 445         return enum_fmt(f, ctx->is_enc, true);
 446 }
 447
 448 static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
 449 {
 450         struct vb2_queue *vq;
 451         struct vicodec_q_data *q_data;
 452         struct v4l2_pix_format_mplane *pix_mp;
 453         struct v4l2_pix_format *pix;
 454         const struct v4l2_fwht_pixfmt_info *info;
 455
 456         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 457         if (!vq)
 458                 return -EINVAL;
 459
 460         q_data = get_q_data(ctx, f->type);
 461         info = q_data->info;
 462
 463         switch (f->type) {
 464         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 465         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 466                 if (multiplanar)
 467                         return -EINVAL;
 468                 pix = &f->fmt.pix;
 469                 pix->width = q_data->width;
 470                 pix->height = q_data->height;
 471                 pix->field = V4L2_FIELD_NONE;
 472                 pix->pixelformat = info->id;
 473                 pix->bytesperline = q_data->width * info->bytesperline_mult;
 474                 pix->sizeimage = q_data->sizeimage;
 475                 pix->colorspace = ctx->state.colorspace;
 476                 pix->xfer_func = ctx->state.xfer_func;
 477                 pix->ycbcr_enc = ctx->state.ycbcr_enc;
 478                 pix->quantization = ctx->state.quantization;
 479                 break;
 480
 481         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 482         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 483                 if (!multiplanar)
 484                         return -EINVAL;
 485                 pix_mp = &f->fmt.pix_mp;
 486                 pix_mp->width = q_data->width;
 487                 pix_mp->height = q_data->height;
 488                 pix_mp->field = V4L2_FIELD_NONE;
 489                 pix_mp->pixelformat = info->id;
 490                 pix_mp->num_planes = 1;
 491                 pix_mp->plane_fmt[0].bytesperline =
 492                                 q_data->width * info->bytesperline_mult;
 493                 pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage;
 494                 pix_mp->colorspace = ctx->state.colorspace;
 495                 pix_mp->xfer_func = ctx->state.xfer_func;
 496                 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
 497                 pix_mp->quantization = ctx->state.quantization;
 498                 memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
 499                 memset(pix_mp->plane_fmt[0].reserved, 0,
 500                        sizeof(pix_mp->plane_fmt[0].reserved));
 501                 break;
 502         default:
 503                 return -EINVAL;
 504         }
 505         return 0;
 506 }
 507
 508 static int vidioc_g_fmt_vid_out(struct file *file, void *priv,
 509                                 struct v4l2_format *f)
 510 {
 511         return vidioc_g_fmt(file2ctx(file), f);
 512 }
 513
 514 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
 515                                 struct v4l2_format *f)
 516 {
 517         return vidioc_g_fmt(file2ctx(file), f);
 518 }
 519
 520 static int vidioc_try_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
 521 {
 522         struct v4l2_pix_format_mplane *pix_mp;
 523         struct v4l2_pix_format *pix;
 524         struct v4l2_plane_pix_format *plane;
 525         const struct v4l2_fwht_pixfmt_info *info = &pixfmt_fwht;
 526
 527         switch (f->type) {
 528         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 529         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 530                 pix = &f->fmt.pix;
 531                 if (pix->pixelformat != V4L2_PIX_FMT_FWHT)
 532                         info = find_fmt(pix->pixelformat);
 533                 pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH) & ~7;
 534                 pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT) & ~7;
 535                 pix->field = V4L2_FIELD_NONE;
 536                 pix->bytesperline =
 537                         pix->width * info->bytesperline_mult;
 538                 pix->sizeimage = pix->width * pix->height *
 539                         info->sizeimage_mult / info->sizeimage_div;
 540                 if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
 541                         pix->sizeimage += sizeof(struct fwht_cframe_hdr);
 542                 break;
 543         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 544         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 545                 pix_mp = &f->fmt.pix_mp;
 546                 plane = pix_mp->plane_fmt;
 547                 if (pix_mp->pixelformat != V4L2_PIX_FMT_FWHT)
 548                         info = find_fmt(pix_mp->pixelformat);
 549                 pix_mp->num_planes = 1;
 550                 pix_mp->width = clamp(pix_mp->width, MIN_WIDTH, MAX_WIDTH) & ~7;
 551                 pix_mp->height =
 552                         clamp(pix_mp->height, MIN_HEIGHT, MAX_HEIGHT) & ~7;
 553                 pix_mp->field = V4L2_FIELD_NONE;
 554                 plane->bytesperline =
 555                         pix_mp->width * info->bytesperline_mult;
 556                 plane->sizeimage = pix_mp->width * pix_mp->height *
 557                         info->sizeimage_mult / info->sizeimage_div;
 558                 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
 559                         plane->sizeimage += sizeof(struct fwht_cframe_hdr);
 560                 memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
 561                 memset(plane->reserved, 0, sizeof(plane->reserved));
 562                 break;
 563         default:
 564                 return -EINVAL;
 565         }
 566
 567         return 0;
 568 }
 569
 570 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
 571                                   struct v4l2_format *f)
 572 {
 573         struct vicodec_ctx *ctx = file2ctx(file);
 574         struct v4l2_pix_format_mplane *pix_mp;
 575         struct v4l2_pix_format *pix;
 576
 577         switch (f->type) {
 578         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 579                 if (multiplanar)
 580                         return -EINVAL;
 581                 pix = &f->fmt.pix;
 582                 pix->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
 583                                    find_fmt(f->fmt.pix.pixelformat)->id;
 584                 pix->colorspace = ctx->state.colorspace;
 585                 pix->xfer_func = ctx->state.xfer_func;
 586                 pix->ycbcr_enc = ctx->state.ycbcr_enc;
 587                 pix->quantization = ctx->state.quantization;
 588                 break;
 589         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 590                 if (!multiplanar)
 591                         return -EINVAL;
 592                 pix_mp = &f->fmt.pix_mp;
 593                 pix_mp->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
 594                                       find_fmt(pix_mp->pixelformat)->id;
 595                 pix_mp->colorspace = ctx->state.colorspace;
 596                 pix_mp->xfer_func = ctx->state.xfer_func;
 597                 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
 598                 pix_mp->quantization = ctx->state.quantization;
 599                 break;
 600         default:
 601                 return -EINVAL;
 602         }
 603
 604         return vidioc_try_fmt(ctx, f);
 605 }
 606
 607 static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
 608                                   struct v4l2_format *f)
 609 {
 610         struct vicodec_ctx *ctx = file2ctx(file);
 611         struct v4l2_pix_format_mplane *pix_mp;
 612         struct v4l2_pix_format *pix;
 613
 614         switch (f->type) {
 615         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 616                 if (multiplanar)
 617                         return -EINVAL;
 618                 pix = &f->fmt.pix;
 619                 pix->pixelformat = !ctx->is_enc ? V4L2_PIX_FMT_FWHT :
 620                                    find_fmt(pix->pixelformat)->id;
 621                 if (!pix->colorspace)
 622                         pix->colorspace = V4L2_COLORSPACE_REC709;
 623                 break;
 624         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 625                 if (!multiplanar)
 626                         return -EINVAL;
 627                 pix_mp = &f->fmt.pix_mp;
 628                 pix_mp->pixelformat = !ctx->is_enc ? V4L2_PIX_FMT_FWHT :
 629                                       find_fmt(pix_mp->pixelformat)->id;
 630                 if (!pix_mp->colorspace)
 631                         pix_mp->colorspace = V4L2_COLORSPACE_REC709;
 632                 break;
 633         default:
 634                 return -EINVAL;
 635         }
 636
 637         return vidioc_try_fmt(ctx, f);
 638 }
 639
 640 static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
 641 {
 642         struct vicodec_q_data *q_data;
 643         struct vb2_queue *vq;
 644         bool fmt_changed = true;
 645         struct v4l2_pix_format_mplane *pix_mp;
 646         struct v4l2_pix_format *pix;
 647
 648         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 649         if (!vq)
 650                 return -EINVAL;
 651
 652         q_data = get_q_data(ctx, f->type);
 653         if (!q_data)
 654                 return -EINVAL;
 655
 656         switch (f->type) {
 657         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 658         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 659                 pix = &f->fmt.pix;
 660                 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
 661                         fmt_changed =
 662                                 q_data->info->id != pix->pixelformat ||
 663                                 q_data->width != pix->width ||
 664                                 q_data->height != pix->height;
 665
 666                 if (vb2_is_busy(vq) && fmt_changed)
 667                         return -EBUSY;
 668
 669                 if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
 670                         q_data->info = &pixfmt_fwht;
 671                 else
 672                         q_data->info = find_fmt(pix->pixelformat);
 673                 q_data->width = pix->width;
 674                 q_data->height = pix->height;
 675                 q_data->sizeimage = pix->sizeimage;
 676                 break;
 677         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 678         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 679                 pix_mp = &f->fmt.pix_mp;
 680                 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
 681                         fmt_changed =
 682                                 q_data->info->id != pix_mp->pixelformat ||
 683                                 q_data->width != pix_mp->width ||
 684                                 q_data->height != pix_mp->height;
 685
 686                 if (vb2_is_busy(vq) && fmt_changed)
 687                         return -EBUSY;
 688
 689                 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
 690                         q_data->info = &pixfmt_fwht;
 691                 else
 692                         q_data->info = find_fmt(pix_mp->pixelformat);
 693                 q_data->width = pix_mp->width;
 694                 q_data->height = pix_mp->height;
 695                 q_data->sizeimage = pix_mp->plane_fmt[0].sizeimage;
 696                 break;
 697         default:
 698                 return -EINVAL;
 699         }
 700
 701         dprintk(ctx->dev,
 702                 "Setting format for type %d, wxh: %dx%d, fourcc: %08x\n",
 703                 f->type, q_data->width, q_data->height, q_data->info->id);
 704
 705         return 0;
 706 }
 707
 708 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
 709                                 struct v4l2_format *f)
 710 {
 711         int ret;
 712
 713         ret = vidioc_try_fmt_vid_cap(file, priv, f);
 714         if (ret)
 715                 return ret;
 716
 717         return vidioc_s_fmt(file2ctx(file), f);
 718 }
 719
 720 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
 721                                 struct v4l2_format *f)
 722 {
 723         struct vicodec_ctx *ctx = file2ctx(file);
 724         struct v4l2_pix_format_mplane *pix_mp;
 725         struct v4l2_pix_format *pix;
 726         int ret;
 727
 728         ret = vidioc_try_fmt_vid_out(file, priv, f);
 729         if (ret)
 730                 return ret;
 731
 732         ret = vidioc_s_fmt(file2ctx(file), f);
 733         if (!ret) {
 734                 switch (f->type) {
 735                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 736                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
 737                         pix = &f->fmt.pix;
 738                         ctx->state.colorspace = pix->colorspace;
 739                         ctx->state.xfer_func = pix->xfer_func;
 740                         ctx->state.ycbcr_enc = pix->ycbcr_enc;
 741                         ctx->state.quantization = pix->quantization;
 742                         break;
 743                 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 744                 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 745                         pix_mp = &f->fmt.pix_mp;
 746                         ctx->state.colorspace = pix_mp->colorspace;
 747                         ctx->state.xfer_func = pix_mp->xfer_func;
 748                         ctx->state.ycbcr_enc = pix_mp->ycbcr_enc;
 749                         ctx->state.quantization = pix_mp->quantization;
 750                         break;
 751                 default:
 752                         break;
 753                 }
 754         }
 755         return ret;
 756 }
 757
 758 static void vicodec_mark_last_buf(struct vicodec_ctx *ctx)
 759 {
 760         static const struct v4l2_event eos_event = {
 761                 .type = V4L2_EVENT_EOS
 762         };
 763
 764         spin_lock(ctx->lock);
 765         ctx->last_src_buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
 766         if (!ctx->last_src_buf && ctx->last_dst_buf) {
 767                 ctx->last_dst_buf->flags |= V4L2_BUF_FLAG_LAST;
 768                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
 769         }
 770         spin_unlock(ctx->lock);
 771 }
 772
 773 static int vicodec_try_encoder_cmd(struct file *file, void *fh,
 774                                 struct v4l2_encoder_cmd *ec)
 775 {
 776         if (ec->cmd != V4L2_ENC_CMD_STOP)
 777                 return -EINVAL;
 778
 779         if (ec->flags & V4L2_ENC_CMD_STOP_AT_GOP_END)
 780                 return -EINVAL;
 781
 782         return 0;
 783 }
 784
 785 static int vicodec_encoder_cmd(struct file *file, void *fh,
 786                             struct v4l2_encoder_cmd *ec)
 787 {
 788         struct vicodec_ctx *ctx = file2ctx(file);
 789         int ret;
 790
 791         ret = vicodec_try_encoder_cmd(file, fh, ec);
 792         if (ret < 0)
 793                 return ret;
 794
 795         vicodec_mark_last_buf(ctx);
 796         return 0;
 797 }
 798
 799 static int vicodec_try_decoder_cmd(struct file *file, void *fh,
 800                                 struct v4l2_decoder_cmd *dc)
 801 {
 802         if (dc->cmd != V4L2_DEC_CMD_STOP)
 803                 return -EINVAL;
 804
 805         if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
 806                 return -EINVAL;
 807
 808         if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
 809                 return -EINVAL;
 810
 811         return 0;
 812 }
 813
 814 static int vicodec_decoder_cmd(struct file *file, void *fh,
 815                             struct v4l2_decoder_cmd *dc)
 816 {
 817         struct vicodec_ctx *ctx = file2ctx(file);
 818         int ret;
 819
 820         ret = vicodec_try_decoder_cmd(file, fh, dc);
 821         if (ret < 0)
 822                 return ret;
 823
 824         vicodec_mark_last_buf(ctx);
 825         return 0;
 826 }
 827
 828 static int vicodec_enum_framesizes(struct file *file, void *fh,
 829                                    struct v4l2_frmsizeenum *fsize)
 830 {
 831         switch (fsize->pixel_format) {
 832         case V4L2_PIX_FMT_FWHT:
 833                 break;
 834         default:
 835                 if (find_fmt(fsize->pixel_format)->id == fsize->pixel_format)
 836                         break;
 837                 return -EINVAL;
 838         }
 839
 840         if (fsize->index)
 841                 return -EINVAL;
 842
 843         fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
 844
 845         fsize->stepwise.min_width = MIN_WIDTH;
 846         fsize->stepwise.max_width = MAX_WIDTH;
 847         fsize->stepwise.step_width = 8;
 848         fsize->stepwise.min_height = MIN_HEIGHT;
 849         fsize->stepwise.max_height = MAX_HEIGHT;
 850         fsize->stepwise.step_height = 8;
 851
 852         return 0;
 853 }
 854
 855 static int vicodec_subscribe_event(struct v4l2_fh *fh,
 856                                 const struct v4l2_event_subscription *sub)
 857 {
 858         switch (sub->type) {
 859         case V4L2_EVENT_EOS:
 860                 return v4l2_event_subscribe(fh, sub, 0, NULL);
 861         default:
 862                 return v4l2_ctrl_subscribe_event(fh, sub);
 863         }
 864 }
 865
 866 static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
 867         .vidioc_querycap        = vidioc_querycap,
 868
 869         .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
 870         .vidioc_g_fmt_vid_cap   = vidioc_g_fmt_vid_cap,
 871         .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
 872         .vidioc_s_fmt_vid_cap   = vidioc_s_fmt_vid_cap,
 873
 874         .vidioc_enum_fmt_vid_cap_mplane = vidioc_enum_fmt_vid_cap,
 875         .vidioc_g_fmt_vid_cap_mplane    = vidioc_g_fmt_vid_cap,
 876         .vidioc_try_fmt_vid_cap_mplane  = vidioc_try_fmt_vid_cap,
 877         .vidioc_s_fmt_vid_cap_mplane    = vidioc_s_fmt_vid_cap,
 878
 879         .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
 880         .vidioc_g_fmt_vid_out   = vidioc_g_fmt_vid_out,
 881         .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
 882         .vidioc_s_fmt_vid_out   = vidioc_s_fmt_vid_out,
 883
 884         .vidioc_enum_fmt_vid_out_mplane = vidioc_enum_fmt_vid_out,
 885         .vidioc_g_fmt_vid_out_mplane    = vidioc_g_fmt_vid_out,
 886         .vidioc_try_fmt_vid_out_mplane  = vidioc_try_fmt_vid_out,
 887         .vidioc_s_fmt_vid_out_mplane    = vidioc_s_fmt_vid_out,
 888
 889         .vidioc_reqbufs         = v4l2_m2m_ioctl_reqbufs,
 890         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
 891         .vidioc_qbuf            = v4l2_m2m_ioctl_qbuf,
 892         .vidioc_dqbuf           = v4l2_m2m_ioctl_dqbuf,
 893         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
 894         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
 895         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
 896
 897         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
 898         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
 899
 900         .vidioc_try_encoder_cmd = vicodec_try_encoder_cmd,
 901         .vidioc_encoder_cmd     = vicodec_encoder_cmd,
 902         .vidioc_try_decoder_cmd = vicodec_try_decoder_cmd,
 903         .vidioc_decoder_cmd     = vicodec_decoder_cmd,
 904         .vidioc_enum_framesizes = vicodec_enum_framesizes,
 905
 906         .vidioc_subscribe_event = vicodec_subscribe_event,
 907         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 908 };
 909
 910
 911 /*
 912  * Queue operations
 913  */
 914
 915 static int vicodec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
 916                                unsigned int *nplanes, unsigned int sizes[],
 917                                struct device *alloc_devs[])
 918 {
 919         struct vicodec_ctx *ctx = vb2_get_drv_priv(vq);
 920         struct vicodec_q_data *q_data = get_q_data(ctx, vq->type);
 921         unsigned int size = q_data->sizeimage;
 922
 923         if (*nplanes)
 924                 return sizes[0] < size ? -EINVAL : 0;
 925
 926         *nplanes = 1;
 927         sizes[0] = size;
 928         return 0;
 929 }
 930
 931 static int vicodec_buf_prepare(struct vb2_buffer *vb)
 932 {
 933         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 934         struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 935         struct vicodec_q_data *q_data;
 936
 937         dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type);
 938
 939         q_data = get_q_data(ctx, vb->vb2_queue->type);
 940         if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
 941                 if (vbuf->field == V4L2_FIELD_ANY)
 942                         vbuf->field = V4L2_FIELD_NONE;
 943                 if (vbuf->field != V4L2_FIELD_NONE) {
 944                         dprintk(ctx->dev, "%s field isn't supported\n",
 945                                         __func__);
 946                         return -EINVAL;
 947                 }
 948         }
 949
 950         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
 951                 dprintk(ctx->dev,
 952                         "%s data will not fit into plane (%lu < %lu)\n",
 953                         __func__, vb2_plane_size(vb, 0),
 954                         (long)q_data->sizeimage);
 955                 return -EINVAL;
 956         }
 957
 958         return 0;
 959 }
 960
 961 static void vicodec_buf_queue(struct vb2_buffer *vb)
 962 {
 963         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 964         struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
 965
 966         v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
 967 }
 968
 969 static void vicodec_return_bufs(struct vb2_queue *q, u32 state)
 970 {
 971         struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
 972         struct vb2_v4l2_buffer *vbuf;
 973
 974         for (;;) {
 975                 if (V4L2_TYPE_IS_OUTPUT(q->type))
 976                         vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
 977                 else
 978                         vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
 979                 if (vbuf == NULL)
 980                         return;
 981                 spin_lock(ctx->lock);
 982                 v4l2_m2m_buf_done(vbuf, state);
 983                 spin_unlock(ctx->lock);
 984         }
 985 }
 986
 987 static int vicodec_start_streaming(struct vb2_queue *q,
 988                                    unsigned int count)
 989 {
 990         struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
 991         struct vicodec_q_data *q_data = get_q_data(ctx, q->type);
 992         struct v4l2_fwht_state *state = &ctx->state;
 993         unsigned int size = q_data->width * q_data->height;
 994         const struct v4l2_fwht_pixfmt_info *info = q_data->info;
 995         unsigned int chroma_div = info->width_div * info->height_div;
 996
 997         q_data->sequence = 0;
 998
 999         if (!V4L2_TYPE_IS_OUTPUT(q->type))
1000                 return 0;
1001
1002         state->width = q_data->width;
1003         state->height = q_data->height;
1004         state->ref_frame.width = state->ref_frame.height = 0;
1005         state->ref_frame.luma = kvmalloc(size + 2 * size / chroma_div,
1006                                          GFP_KERNEL);
1007         ctx->comp_max_size = size + 2 * size / chroma_div +
1008                              sizeof(struct fwht_cframe_hdr);
1009         state->compressed_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL);
1010         if (!state->ref_frame.luma || !state->compressed_frame) {
1011                 kvfree(state->ref_frame.luma);
1012                 kvfree(state->compressed_frame);
1013                 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
1014                 return -ENOMEM;
1015         }
1016         state->ref_frame.cb = state->ref_frame.luma + size;
1017         state->ref_frame.cr = state->ref_frame.cb + size / chroma_div;
1018         ctx->last_src_buf = NULL;
1019         ctx->last_dst_buf = NULL;
1020         state->gop_cnt = 0;
1021         ctx->cur_buf_offset = 0;
1022         ctx->comp_size = 0;
1023         ctx->comp_magic_cnt = 0;
1024         ctx->comp_has_frame = false;
1025
1026         return 0;
1027 }
1028
1029 static void vicodec_stop_streaming(struct vb2_queue *q)
1030 {
1031         struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
1032
1033         vicodec_return_bufs(q, VB2_BUF_STATE_ERROR);
1034
1035         if (!V4L2_TYPE_IS_OUTPUT(q->type))
1036                 return;
1037
1038         kvfree(ctx->state.ref_frame.luma);
1039         kvfree(ctx->state.compressed_frame);
1040 }
1041
1042 static const struct vb2_ops vicodec_qops = {
1043         .queue_setup     = vicodec_queue_setup,
1044         .buf_prepare     = vicodec_buf_prepare,
1045         .buf_queue       = vicodec_buf_queue,
1046         .start_streaming = vicodec_start_streaming,
1047         .stop_streaming  = vicodec_stop_streaming,
1048         .wait_prepare    = vb2_ops_wait_prepare,
1049         .wait_finish     = vb2_ops_wait_finish,
1050 };
1051
1052 static int queue_init(void *priv, struct vb2_queue *src_vq,
1053                       struct vb2_queue *dst_vq)
1054 {
1055         struct vicodec_ctx *ctx = priv;
1056         int ret;
1057
1058         src_vq->type = (multiplanar ?
1059                         V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
1060                         V4L2_BUF_TYPE_VIDEO_OUTPUT);
1061         src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1062         src_vq->drv_priv = ctx;
1063         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1064         src_vq->ops = &vicodec_qops;
1065         src_vq->mem_ops = &vb2_vmalloc_memops;
1066         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1067         src_vq->lock = ctx->is_enc ? &ctx->dev->enc_mutex :
1068                 &ctx->dev->dec_mutex;
1069
1070         ret = vb2_queue_init(src_vq);
1071         if (ret)
1072                 return ret;
1073
1074         dst_vq->type = (multiplanar ?
1075                         V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1076                         V4L2_BUF_TYPE_VIDEO_CAPTURE);
1077         dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1078         dst_vq->drv_priv = ctx;
1079         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1080         dst_vq->ops = &vicodec_qops;
1081         dst_vq->mem_ops = &vb2_vmalloc_memops;
1082         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1083         dst_vq->lock = src_vq->lock;
1084
1085         return vb2_queue_init(dst_vq);
1086 }
1087
1088 #define VICODEC_CID_CUSTOM_BASE         (V4L2_CID_MPEG_BASE | 0xf000)
1089 #define VICODEC_CID_I_FRAME_QP          (VICODEC_CID_CUSTOM_BASE + 0)
1090 #define VICODEC_CID_P_FRAME_QP          (VICODEC_CID_CUSTOM_BASE + 1)
1091
1092 static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl)
1093 {
1094         struct vicodec_ctx *ctx = container_of(ctrl->handler,
1095                                                struct vicodec_ctx, hdl);
1096
1097         switch (ctrl->id) {
1098         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1099                 ctx->state.gop_size = ctrl->val;
1100                 return 0;
1101         case VICODEC_CID_I_FRAME_QP:
1102                 ctx->state.i_frame_qp = ctrl->val;
1103                 return 0;
1104         case VICODEC_CID_P_FRAME_QP:
1105                 ctx->state.p_frame_qp = ctrl->val;
1106                 return 0;
1107         }
1108         return -EINVAL;
1109 }
1110
1111 static struct v4l2_ctrl_ops vicodec_ctrl_ops = {
1112         .s_ctrl = vicodec_s_ctrl,
1113 };
1114
1115 static const struct v4l2_ctrl_config vicodec_ctrl_i_frame = {
1116         .ops = &vicodec_ctrl_ops,
1117         .id = VICODEC_CID_I_FRAME_QP,
1118         .name = "FWHT I-Frame QP Value",
1119         .type = V4L2_CTRL_TYPE_INTEGER,
1120         .min = 1,
1121         .max = 31,
1122         .def = 20,
1123         .step = 1,
1124 };
1125
1126 static const struct v4l2_ctrl_config vicodec_ctrl_p_frame = {
1127         .ops = &vicodec_ctrl_ops,
1128         .id = VICODEC_CID_P_FRAME_QP,
1129         .name = "FWHT P-Frame QP Value",
1130         .type = V4L2_CTRL_TYPE_INTEGER,
1131         .min = 1,
1132         .max = 31,
1133         .def = 20,
1134         .step = 1,
1135 };
1136
1137 /*
1138  * File operations
1139  */
1140 static int vicodec_open(struct file *file)
1141 {
1142         struct video_device *vfd = video_devdata(file);
1143         struct vicodec_dev *dev = video_drvdata(file);
1144         struct vicodec_ctx *ctx = NULL;
1145         struct v4l2_ctrl_handler *hdl;
1146         unsigned int size;
1147         int rc = 0;
1148
1149         if (mutex_lock_interruptible(vfd->lock))
1150                 return -ERESTARTSYS;
1151         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1152         if (!ctx) {
1153                 rc = -ENOMEM;
1154                 goto open_unlock;
1155         }
1156
1157         if (vfd == &dev->enc_vfd)
1158                 ctx->is_enc = true;
1159
1160         v4l2_fh_init(&ctx->fh, video_devdata(file));
1161         file->private_data = &ctx->fh;
1162         ctx->dev = dev;
1163         hdl = &ctx->hdl;
1164         v4l2_ctrl_handler_init(hdl, 4);
1165         v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE,
1166                           1, 16, 1, 10);
1167         v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_i_frame, NULL);
1168         v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_p_frame, NULL);
1169         if (hdl->error) {
1170                 rc = hdl->error;
1171                 v4l2_ctrl_handler_free(hdl);
1172                 kfree(ctx);
1173                 goto open_unlock;
1174         }
1175         ctx->fh.ctrl_handler = hdl;
1176         v4l2_ctrl_handler_setup(hdl);
1177
1178         ctx->q_data[V4L2_M2M_SRC].info =
1179                 ctx->is_enc ? v4l2_fwht_get_pixfmt(0) : &pixfmt_fwht;
1180         ctx->q_data[V4L2_M2M_SRC].width = 1280;
1181         ctx->q_data[V4L2_M2M_SRC].height = 720;
1182         size = 1280 * 720 * ctx->q_data[V4L2_M2M_SRC].info->sizeimage_mult /
1183                 ctx->q_data[V4L2_M2M_SRC].info->sizeimage_div;
1184         if (ctx->is_enc)
1185                 ctx->q_data[V4L2_M2M_SRC].sizeimage = size;
1186         else
1187                 ctx->q_data[V4L2_M2M_SRC].sizeimage =
1188                         size + sizeof(struct fwht_cframe_hdr);
1189         ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
1190         ctx->q_data[V4L2_M2M_DST].info =
1191                 ctx->is_enc ? &pixfmt_fwht : v4l2_fwht_get_pixfmt(0);
1192         size = 1280 * 720 * ctx->q_data[V4L2_M2M_DST].info->sizeimage_mult /
1193                 ctx->q_data[V4L2_M2M_DST].info->sizeimage_div;
1194         if (ctx->is_enc)
1195                 ctx->q_data[V4L2_M2M_DST].sizeimage =
1196                         size + sizeof(struct fwht_cframe_hdr);
1197         else
1198                 ctx->q_data[V4L2_M2M_DST].sizeimage = size;
1199         ctx->state.colorspace = V4L2_COLORSPACE_REC709;
1200
1201         if (ctx->is_enc) {
1202                 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->enc_dev, ctx,
1203                                                     &queue_init);
1204                 ctx->lock = &dev->enc_lock;
1205         } else {
1206                 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->dec_dev, ctx,
1207                                                     &queue_init);
1208                 ctx->lock = &dev->dec_lock;
1209         }
1210
1211         if (IS_ERR(ctx->fh.m2m_ctx)) {
1212                 rc = PTR_ERR(ctx->fh.m2m_ctx);
1213
1214                 v4l2_ctrl_handler_free(hdl);
1215                 v4l2_fh_exit(&ctx->fh);
1216                 kfree(ctx);
1217                 goto open_unlock;
1218         }
1219
1220         v4l2_fh_add(&ctx->fh);
1221
1222 open_unlock:
1223         mutex_unlock(vfd->lock);
1224         return rc;
1225 }
1226
1227 static int vicodec_release(struct file *file)
1228 {
1229         struct video_device *vfd = video_devdata(file);
1230         struct vicodec_ctx *ctx = file2ctx(file);
1231
1232         v4l2_fh_del(&ctx->fh);
1233         v4l2_fh_exit(&ctx->fh);
1234         v4l2_ctrl_handler_free(&ctx->hdl);
1235         mutex_lock(vfd->lock);
1236         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
1237         mutex_unlock(vfd->lock);
1238         kfree(ctx);
1239
1240         return 0;
1241 }
1242
1243 static const struct v4l2_file_operations vicodec_fops = {
1244         .owner          = THIS_MODULE,
1245         .open           = vicodec_open,
1246         .release        = vicodec_release,
1247         .poll           = v4l2_m2m_fop_poll,
1248         .unlocked_ioctl = video_ioctl2,
1249         .mmap           = v4l2_m2m_fop_mmap,
1250 };
1251
1252 static const struct video_device vicodec_videodev = {
1253         .name           = VICODEC_NAME,
1254         .vfl_dir        = VFL_DIR_M2M,
1255         .fops           = &vicodec_fops,
1256         .ioctl_ops      = &vicodec_ioctl_ops,
1257         .minor          = -1,
1258         .release        = video_device_release_empty,
1259 };
1260
1261 static const struct v4l2_m2m_ops m2m_ops = {
1262         .device_run     = device_run,
1263         .job_ready      = job_ready,
1264 };
1265
1266 static int vicodec_probe(struct platform_device *pdev)
1267 {
1268         struct vicodec_dev *dev;
1269         struct video_device *vfd;
1270         int ret;
1271
1272         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
1273         if (!dev)
1274                 return -ENOMEM;
1275
1276         spin_lock_init(&dev->enc_lock);
1277         spin_lock_init(&dev->dec_lock);
1278
1279         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
1280         if (ret)
1281                 return ret;
1282
1283 #ifdef CONFIG_MEDIA_CONTROLLER
1284         dev->mdev.dev = &pdev->dev;
1285         strscpy(dev->mdev.model, "vicodec", sizeof(dev->mdev.model));
1286         media_device_init(&dev->mdev);
1287         dev->v4l2_dev.mdev = &dev->mdev;
1288 #endif
1289
1290         mutex_init(&dev->enc_mutex);
1291         mutex_init(&dev->dec_mutex);
1292
1293         platform_set_drvdata(pdev, dev);
1294
1295         dev->enc_dev = v4l2_m2m_init(&m2m_ops);
1296         if (IS_ERR(dev->enc_dev)) {
1297                 v4l2_err(&dev->v4l2_dev, "Failed to init vicodec device\n");
1298                 ret = PTR_ERR(dev->enc_dev);
1299                 goto unreg_dev;
1300         }
1301
1302         dev->dec_dev = v4l2_m2m_init(&m2m_ops);
1303         if (IS_ERR(dev->dec_dev)) {
1304                 v4l2_err(&dev->v4l2_dev, "Failed to init vicodec device\n");
1305                 ret = PTR_ERR(dev->dec_dev);
1306                 goto err_enc_m2m;
1307         }
1308
1309         dev->enc_vfd = vicodec_videodev;
1310         vfd = &dev->enc_vfd;
1311         vfd->lock = &dev->enc_mutex;
1312         vfd->v4l2_dev = &dev->v4l2_dev;
1313         strscpy(vfd->name, "vicodec-enc", sizeof(vfd->name));
1314         v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
1315         v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
1316         video_set_drvdata(vfd, dev);
1317
1318         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1319         if (ret) {
1320                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1321                 goto err_dec_m2m;
1322         }
1323         v4l2_info(&dev->v4l2_dev,
1324                         "Device registered as /dev/video%d\n", vfd->num);
1325
1326         dev->dec_vfd = vicodec_videodev;
1327         vfd = &dev->dec_vfd;
1328         vfd->lock = &dev->dec_mutex;
1329         vfd->v4l2_dev = &dev->v4l2_dev;
1330         strscpy(vfd->name, "vicodec-dec", sizeof(vfd->name));
1331         v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
1332         v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
1333         video_set_drvdata(vfd, dev);
1334
1335         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
1336         if (ret) {
1337                 v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
1338                 goto unreg_enc;
1339         }
1340         v4l2_info(&dev->v4l2_dev,
1341                         "Device registered as /dev/video%d\n", vfd->num);
1342
1343 #ifdef CONFIG_MEDIA_CONTROLLER
1344         ret = v4l2_m2m_register_media_controller(dev->enc_dev,
1345                         &dev->enc_vfd, MEDIA_ENT_F_PROC_VIDEO_ENCODER);
1346         if (ret) {
1347                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller\n");
1348                 goto unreg_m2m;
1349         }
1350
1351         ret = v4l2_m2m_register_media_controller(dev->dec_dev,
1352                         &dev->dec_vfd, MEDIA_ENT_F_PROC_VIDEO_DECODER);
1353         if (ret) {
1354                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller\n");
1355                 goto unreg_m2m_enc_mc;
1356         }
1357
1358         ret = media_device_register(&dev->mdev);
1359         if (ret) {
1360                 v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n");
1361                 goto unreg_m2m_dec_mc;
1362         }
1363 #endif
1364         return 0;
1365
1366 #ifdef CONFIG_MEDIA_CONTROLLER
1367 unreg_m2m_dec_mc:
1368         v4l2_m2m_unregister_media_controller(dev->dec_dev);
1369 unreg_m2m_enc_mc:
1370         v4l2_m2m_unregister_media_controller(dev->enc_dev);
1371 unreg_m2m:
1372         video_unregister_device(&dev->dec_vfd);
1373 #endif
1374 unreg_enc:
1375         video_unregister_device(&dev->enc_vfd);
1376 err_dec_m2m:
1377         v4l2_m2m_release(dev->dec_dev);
1378 err_enc_m2m:
1379         v4l2_m2m_release(dev->enc_dev);
1380 unreg_dev:
1381         v4l2_device_unregister(&dev->v4l2_dev);
1382
1383         return ret;
1384 }
1385
1386 static int vicodec_remove(struct platform_device *pdev)
1387 {
1388         struct vicodec_dev *dev = platform_get_drvdata(pdev);
1389
1390         v4l2_info(&dev->v4l2_dev, "Removing " VICODEC_NAME);
1391
1392 #ifdef CONFIG_MEDIA_CONTROLLER
1393         media_device_unregister(&dev->mdev);
1394         v4l2_m2m_unregister_media_controller(dev->enc_dev);
1395         v4l2_m2m_unregister_media_controller(dev->dec_dev);
1396         media_device_cleanup(&dev->mdev);
1397 #endif
1398
1399         v4l2_m2m_release(dev->enc_dev);
1400         v4l2_m2m_release(dev->dec_dev);
1401         video_unregister_device(&dev->enc_vfd);
1402         video_unregister_device(&dev->dec_vfd);
1403         v4l2_device_unregister(&dev->v4l2_dev);
1404
1405         return 0;
1406 }
1407
1408 static struct platform_driver vicodec_pdrv = {
1409         .probe          = vicodec_probe,
1410         .remove         = vicodec_remove,
1411         .driver         = {
1412                 .name   = VICODEC_NAME,
1413         },
1414 };
1415
1416 static void __exit vicodec_exit(void)
1417 {
1418         platform_driver_unregister(&vicodec_pdrv);
1419         platform_device_unregister(&vicodec_pdev);
1420 }
1421
1422 static int __init vicodec_init(void)
1423 {
1424         int ret;
1425
1426         ret = platform_device_register(&vicodec_pdev);
1427         if (ret)
1428                 return ret;
1429
1430         ret = platform_driver_register(&vicodec_pdrv);
1431         if (ret)
1432                 platform_device_unregister(&vicodec_pdev);
1433
1434         return ret;
1435 }
1436
1437 module_init(vicodec_init);
1438 module_exit(vicodec_exit);