drivers/media/platform/qcom/venus/vdec.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
   4  * Copyright (C) 2017 Linaro Ltd.
   5  */
   6 #include <linux/clk.h>
   7 #include <linux/module.h>
   8 #include <linux/mod_devicetable.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/pm_runtime.h>
  11 #include <linux/slab.h>
  12 #include <media/v4l2-ioctl.h>
  13 #include <media/v4l2-event.h>
  14 #include <media/v4l2-ctrls.h>
  15 #include <media/v4l2-mem2mem.h>
  16 #include <media/videobuf2-dma-contig.h>
  17
  18 #include "hfi_venus_io.h"
  19 #include "hfi_parser.h"
  20 #include "core.h"
  21 #include "helpers.h"
  22 #include "vdec.h"
  23 #include "pm_helpers.h"
  24
  25 /*
  26  * Three resons to keep MPLANE formats (despite that the number of planes
  27  * currently is one):
  28  * - the MPLANE formats allow only one plane to be used
  29  * - the downstream driver use MPLANE formats too
  30  * - future firmware versions could add support for >1 planes
  31  */
  32 static const struct venus_format vdec_formats[] = {
  33         {
  34                 .pixfmt = V4L2_PIX_FMT_QC08C,
  35                 .num_planes = 1,
  36                 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
  37         }, {
  38                 .pixfmt = V4L2_PIX_FMT_QC10C,
  39                 .num_planes = 1,
  40                 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
  41         },{
  42                 .pixfmt = V4L2_PIX_FMT_NV12,
  43                 .num_planes = 1,
  44                 .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
  45         }, {
  46                 .pixfmt = V4L2_PIX_FMT_MPEG4,
  47                 .num_planes = 1,
  48                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  49                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  50         }, {
  51                 .pixfmt = V4L2_PIX_FMT_MPEG2,
  52                 .num_planes = 1,
  53                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  54                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  55         }, {
  56                 .pixfmt = V4L2_PIX_FMT_H263,
  57                 .num_planes = 1,
  58                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  59                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  60         }, {
  61                 .pixfmt = V4L2_PIX_FMT_VC1_ANNEX_G,
  62                 .num_planes = 1,
  63                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  64                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  65         }, {
  66                 .pixfmt = V4L2_PIX_FMT_VC1_ANNEX_L,
  67                 .num_planes = 1,
  68                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  69                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  70         }, {
  71                 .pixfmt = V4L2_PIX_FMT_H264,
  72                 .num_planes = 1,
  73                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  74                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  75         }, {
  76                 .pixfmt = V4L2_PIX_FMT_VP8,
  77                 .num_planes = 1,
  78                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  79                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  80         }, {
  81                 .pixfmt = V4L2_PIX_FMT_VP9,
  82                 .num_planes = 1,
  83                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  84                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  85         }, {
  86                 .pixfmt = V4L2_PIX_FMT_XVID,
  87                 .num_planes = 1,
  88                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  89                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  90         }, {
  91                 .pixfmt = V4L2_PIX_FMT_HEVC,
  92                 .num_planes = 1,
  93                 .type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE,
  94                 .flags = V4L2_FMT_FLAG_DYN_RESOLUTION,
  95         },
  96 };
  97
  98 static const struct venus_format *
  99 find_format(struct venus_inst *inst, u32 pixfmt, u32 type)
 100 {
 101         const struct venus_format *fmt = vdec_formats;
 102         unsigned int size = ARRAY_SIZE(vdec_formats);
 103         unsigned int i;
 104
 105         for (i = 0; i < size; i++) {
 106                 if (fmt[i].pixfmt == pixfmt)
 107                         break;
 108         }
 109
 110         if (i == size || fmt[i].type != type)
 111                 return NULL;
 112
 113         if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
 114             !venus_helper_check_codec(inst, fmt[i].pixfmt))
 115                 return NULL;
 116
 117         if (V4L2_TYPE_IS_CAPTURE(type) &&
 118             !venus_helper_check_format(inst, fmt[i].pixfmt))
 119                 return NULL;
 120
 121         if (V4L2_TYPE_IS_CAPTURE(type) && fmt[i].pixfmt == V4L2_PIX_FMT_QC10C &&
 122             !(inst->bit_depth == VIDC_BITDEPTH_10))
 123                 return NULL;
 124
 125         return &fmt[i];
 126 }
 127
 128 static const struct venus_format *
 129 find_format_by_index(struct venus_inst *inst, unsigned int index, u32 type)
 130 {
 131         const struct venus_format *fmt = vdec_formats;
 132         unsigned int size = ARRAY_SIZE(vdec_formats);
 133         unsigned int i, k = 0;
 134
 135         if (index > size)
 136                 return NULL;
 137
 138         for (i = 0; i < size; i++) {
 139                 bool valid;
 140
 141                 if (fmt[i].type != type)
 142                         continue;
 143
 144                 if (V4L2_TYPE_IS_OUTPUT(type)) {
 145                         valid = venus_helper_check_codec(inst, fmt[i].pixfmt);
 146                 } else if (V4L2_TYPE_IS_CAPTURE(type)) {
 147                         valid = venus_helper_check_format(inst, fmt[i].pixfmt);
 148
 149                         if (fmt[i].pixfmt == V4L2_PIX_FMT_QC10C &&
 150                             !(inst->bit_depth == VIDC_BITDEPTH_10))
 151                                 valid = false;
 152                 }
 153
 154                 if (k == index && valid)
 155                         break;
 156                 if (valid)
 157                         k++;
 158         }
 159
 160         if (i == size)
 161                 return NULL;
 162
 163         return &fmt[i];
 164 }
 165
 166 static const struct venus_format *
 167 vdec_try_fmt_common(struct venus_inst *inst, struct v4l2_format *f)
 168 {
 169         struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
 170         struct v4l2_plane_pix_format *pfmt = pixmp->plane_fmt;
 171         const struct venus_format *fmt;
 172         u32 szimage;
 173
 174         memset(pfmt[0].reserved, 0, sizeof(pfmt[0].reserved));
 175         memset(pixmp->reserved, 0, sizeof(pixmp->reserved));
 176
 177         fmt = find_format(inst, pixmp->pixelformat, f->type);
 178         if (!fmt) {
 179                 if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 180                         pixmp->pixelformat = V4L2_PIX_FMT_NV12;
 181                 else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 182                         pixmp->pixelformat = V4L2_PIX_FMT_H264;
 183                 else
 184                         return NULL;
 185                 fmt = find_format(inst, pixmp->pixelformat, f->type);
 186         }
 187
 188         pixmp->width = clamp(pixmp->width, frame_width_min(inst),
 189                              frame_width_max(inst));
 190         pixmp->height = clamp(pixmp->height, frame_height_min(inst),
 191                               frame_height_max(inst));
 192
 193         if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 194                 pixmp->height = ALIGN(pixmp->height, 32);
 195
 196         if (pixmp->field == V4L2_FIELD_ANY)
 197                 pixmp->field = V4L2_FIELD_NONE;
 198         pixmp->num_planes = fmt->num_planes;
 199         pixmp->flags = 0;
 200
 201         szimage = venus_helper_get_framesz(pixmp->pixelformat, pixmp->width,
 202                                            pixmp->height);
 203
 204         if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 205                 pfmt[0].sizeimage = szimage;
 206                 pfmt[0].bytesperline = ALIGN(pixmp->width, 128);
 207         } else {
 208                 pfmt[0].sizeimage = clamp_t(u32, pfmt[0].sizeimage, 0, SZ_8M);
 209                 pfmt[0].sizeimage = max(pfmt[0].sizeimage, szimage);
 210                 pfmt[0].bytesperline = 0;
 211         }
 212
 213         return fmt;
 214 }
 215
 216 static int vdec_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
 217 {
 218         struct venus_inst *inst = to_inst(file);
 219
 220         vdec_try_fmt_common(inst, f);
 221
 222         return 0;
 223 }
 224
 225 static int vdec_check_src_change(struct venus_inst *inst)
 226 {
 227         int ret;
 228
 229         if (inst->subscriptions & V4L2_EVENT_SOURCE_CHANGE &&
 230             inst->codec_state == VENUS_DEC_STATE_INIT &&
 231             !inst->reconfig)
 232                 return -EINVAL;
 233
 234         if (inst->subscriptions & V4L2_EVENT_SOURCE_CHANGE)
 235                 return 0;
 236
 237         /*
 238          * The code snippet below is a workaround for backward compatibility
 239          * with applications which doesn't support V4L2 events. It will be
 240          * dropped in future once those applications are fixed.
 241          */
 242
 243         if (inst->codec_state != VENUS_DEC_STATE_INIT)
 244                 goto done;
 245
 246         ret = wait_event_timeout(inst->reconf_wait, inst->reconfig,
 247                                  msecs_to_jiffies(100));
 248         if (!ret)
 249                 return -EINVAL;
 250
 251         if (!(inst->codec_state == VENUS_DEC_STATE_CAPTURE_SETUP) ||
 252             !inst->reconfig)
 253                 dev_dbg(inst->core->dev, VDBGH "wrong state\n");
 254
 255 done:
 256         return 0;
 257 }
 258
 259 static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
 260 {
 261         struct venus_inst *inst = to_inst(file);
 262         const struct venus_format *fmt = NULL;
 263         struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
 264         int ret;
 265
 266         if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
 267                 fmt = inst->fmt_cap;
 268         else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 269                 fmt = inst->fmt_out;
 270
 271         if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 272                 ret = vdec_check_src_change(inst);
 273                 if (ret)
 274                         return ret;
 275         }
 276
 277         pixmp->pixelformat = fmt->pixfmt;
 278
 279         if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 280                 pixmp->width = inst->width;
 281                 pixmp->height = inst->height;
 282                 pixmp->colorspace = inst->colorspace;
 283                 pixmp->ycbcr_enc = inst->ycbcr_enc;
 284                 pixmp->quantization = inst->quantization;
 285                 pixmp->xfer_func = inst->xfer_func;
 286         } else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
 287                 pixmp->width = inst->out_width;
 288                 pixmp->height = inst->out_height;
 289         }
 290
 291         vdec_try_fmt_common(inst, f);
 292
 293         return 0;
 294 }
 295
 296 static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
 297 {
 298         struct venus_inst *inst = to_inst(file);
 299         struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
 300         struct v4l2_pix_format_mplane orig_pixmp;
 301         const struct venus_format *fmt;
 302         struct v4l2_format format;
 303         u32 pixfmt_out = 0, pixfmt_cap = 0;
 304         struct vb2_queue *q;
 305
 306         q = v4l2_m2m_get_vq(inst->m2m_ctx, f->type);
 307         if (!q)
 308                 return -EINVAL;
 309
 310         if (vb2_is_busy(q))
 311                 return -EBUSY;
 312
 313         orig_pixmp = *pixmp;
 314
 315         fmt = vdec_try_fmt_common(inst, f);
 316
 317         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
 318                 pixfmt_out = pixmp->pixelformat;
 319                 pixfmt_cap = inst->fmt_cap->pixfmt;
 320         } else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 321                 pixfmt_cap = pixmp->pixelformat;
 322                 pixfmt_out = inst->fmt_out->pixfmt;
 323         }
 324
 325         memset(&format, 0, sizeof(format));
 326
 327         format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
 328         format.fmt.pix_mp.pixelformat = pixfmt_out;
 329         format.fmt.pix_mp.width = orig_pixmp.width;
 330         format.fmt.pix_mp.height = orig_pixmp.height;
 331         vdec_try_fmt_common(inst, &format);
 332
 333         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
 334                 inst->out_width = format.fmt.pix_mp.width;
 335                 inst->out_height = format.fmt.pix_mp.height;
 336                 inst->colorspace = pixmp->colorspace;
 337                 inst->ycbcr_enc = pixmp->ycbcr_enc;
 338                 inst->quantization = pixmp->quantization;
 339                 inst->xfer_func = pixmp->xfer_func;
 340                 inst->input_buf_size = pixmp->plane_fmt[0].sizeimage;
 341         }
 342
 343         memset(&format, 0, sizeof(format));
 344
 345         format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
 346         format.fmt.pix_mp.pixelformat = pixfmt_cap;
 347         format.fmt.pix_mp.width = orig_pixmp.width;
 348         format.fmt.pix_mp.height = orig_pixmp.height;
 349         vdec_try_fmt_common(inst, &format);
 350
 351         inst->width = format.fmt.pix_mp.width;
 352         inst->height = format.fmt.pix_mp.height;
 353         inst->crop.top = 0;
 354         inst->crop.left = 0;
 355         inst->crop.width = inst->width;
 356         inst->crop.height = inst->height;
 357
 358         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 359                 inst->fmt_out = fmt;
 360         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
 361                 inst->fmt_cap = fmt;
 362                 inst->output2_buf_size =
 363                         venus_helper_get_framesz(pixfmt_cap, orig_pixmp.width, orig_pixmp.height);
 364         }
 365
 366         return 0;
 367 }
 368
 369 static int
 370 vdec_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
 371 {
 372         struct venus_inst *inst = to_inst(file);
 373
 374         if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 375             s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 376                 return -EINVAL;
 377
 378         s->r.top = 0;
 379         s->r.left = 0;
 380
 381         switch (s->target) {
 382         case V4L2_SEL_TGT_CROP_BOUNDS:
 383         case V4L2_SEL_TGT_CROP_DEFAULT:
 384         case V4L2_SEL_TGT_CROP:
 385                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
 386                         return -EINVAL;
 387                 s->r.width = inst->out_width;
 388                 s->r.height = inst->out_height;
 389                 break;
 390         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
 391         case V4L2_SEL_TGT_COMPOSE_PADDED:
 392                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 393                         return -EINVAL;
 394                 s->r.width = inst->width;
 395                 s->r.height = inst->height;
 396                 break;
 397         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
 398         case V4L2_SEL_TGT_COMPOSE:
 399                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 400                         return -EINVAL;
 401                 s->r = inst->crop;
 402                 break;
 403         default:
 404                 return -EINVAL;
 405         }
 406
 407         return 0;
 408 }
 409
 410 static int
 411 vdec_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
 412 {
 413         strscpy(cap->driver, "qcom-venus", sizeof(cap->driver));
 414         strscpy(cap->card, "Qualcomm Venus video decoder", sizeof(cap->card));
 415         strscpy(cap->bus_info, "platform:qcom-venus", sizeof(cap->bus_info));
 416
 417         return 0;
 418 }
 419
 420 static int vdec_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
 421 {
 422         struct venus_inst *inst = to_inst(file);
 423         const struct venus_format *fmt;
 424
 425         memset(f->reserved, 0, sizeof(f->reserved));
 426
 427         fmt = find_format_by_index(inst, f->index, f->type);
 428         if (!fmt)
 429                 return -EINVAL;
 430
 431         f->pixelformat = fmt->pixfmt;
 432         f->flags = fmt->flags;
 433
 434         return 0;
 435 }
 436
 437 static int vdec_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
 438 {
 439         struct venus_inst *inst = to_inst(file);
 440         struct v4l2_captureparm *cap = &a->parm.capture;
 441         struct v4l2_fract *timeperframe = &cap->timeperframe;
 442         u64 us_per_frame, fps;
 443
 444         if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
 445             a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
 446                 return -EINVAL;
 447
 448         memset(cap->reserved, 0, sizeof(cap->reserved));
 449         if (!timeperframe->denominator)
 450                 timeperframe->denominator = inst->timeperframe.denominator;
 451         if (!timeperframe->numerator)
 452                 timeperframe->numerator = inst->timeperframe.numerator;
 453         cap->readbuffers = 0;
 454         cap->extendedmode = 0;
 455         cap->capability = V4L2_CAP_TIMEPERFRAME;
 456         us_per_frame = timeperframe->numerator * (u64)USEC_PER_SEC;
 457         do_div(us_per_frame, timeperframe->denominator);
 458
 459         if (!us_per_frame)
 460                 return -EINVAL;
 461
 462         fps = (u64)USEC_PER_SEC;
 463         do_div(fps, us_per_frame);
 464
 465         inst->fps = fps;
 466         inst->timeperframe = *timeperframe;
 467
 468         return 0;
 469 }
 470
 471 static int vdec_enum_framesizes(struct file *file, void *fh,
 472                                 struct v4l2_frmsizeenum *fsize)
 473 {
 474         struct venus_inst *inst = to_inst(file);
 475         const struct venus_format *fmt;
 476
 477         fmt = find_format(inst, fsize->pixel_format,
 478                           V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
 479         if (!fmt) {
 480                 fmt = find_format(inst, fsize->pixel_format,
 481                                   V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
 482                 if (!fmt)
 483                         return -EINVAL;
 484         }
 485
 486         if (fsize->index)
 487                 return -EINVAL;
 488
 489         fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
 490
 491         fsize->stepwise.min_width = frame_width_min(inst);
 492         fsize->stepwise.max_width = frame_width_max(inst);
 493         fsize->stepwise.step_width = frame_width_step(inst);
 494         fsize->stepwise.min_height = frame_height_min(inst);
 495         fsize->stepwise.max_height = frame_height_max(inst);
 496         fsize->stepwise.step_height = frame_height_step(inst);
 497
 498         return 0;
 499 }
 500
 501 static int vdec_subscribe_event(struct v4l2_fh *fh,
 502                                 const struct v4l2_event_subscription *sub)
 503 {
 504         struct venus_inst *inst = container_of(fh, struct venus_inst, fh);
 505         int ret;
 506
 507         switch (sub->type) {
 508         case V4L2_EVENT_EOS:
 509                 return v4l2_event_subscribe(fh, sub, 2, NULL);
 510         case V4L2_EVENT_SOURCE_CHANGE:
 511                 ret = v4l2_src_change_event_subscribe(fh, sub);
 512                 if (ret)
 513                         return ret;
 514                 inst->subscriptions |= V4L2_EVENT_SOURCE_CHANGE;
 515                 return 0;
 516         case V4L2_EVENT_CTRL:
 517                 return v4l2_ctrl_subscribe_event(fh, sub);
 518         default:
 519                 return -EINVAL;
 520         }
 521 }
 522
 523 static int
 524 vdec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
 525 {
 526         struct venus_inst *inst = to_inst(file);
 527         struct hfi_frame_data fdata = {0};
 528         int ret;
 529
 530         ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, cmd);
 531         if (ret)
 532                 return ret;
 533
 534         mutex_lock(&inst->lock);
 535
 536         if (cmd->cmd == V4L2_DEC_CMD_STOP) {
 537                 /*
 538                  * Implement V4L2_DEC_CMD_STOP by enqueue an empty buffer on
 539                  * decoder input to signal EOS.
 540                  */
 541                 if (!(inst->streamon_out && inst->streamon_cap))
 542                         goto unlock;
 543
 544                 fdata.buffer_type = HFI_BUFFER_INPUT;
 545                 fdata.flags |= HFI_BUFFERFLAG_EOS;
 546                 if (IS_V6(inst->core))
 547                         fdata.device_addr = 0;
 548                 else
 549                         fdata.device_addr = 0xdeadb000;
 550
 551                 ret = hfi_session_process_buf(inst, &fdata);
 552
 553                 if (!ret && inst->codec_state == VENUS_DEC_STATE_DECODING) {
 554                         inst->codec_state = VENUS_DEC_STATE_DRAIN;
 555                         inst->drain_active = true;
 556                 }
 557         }
 558
 559 unlock:
 560         mutex_unlock(&inst->lock);
 561         return ret;
 562 }
 563
 564 static const struct v4l2_ioctl_ops vdec_ioctl_ops = {
 565         .vidioc_querycap = vdec_querycap,
 566         .vidioc_enum_fmt_vid_cap = vdec_enum_fmt,
 567         .vidioc_enum_fmt_vid_out = vdec_enum_fmt,
 568         .vidioc_s_fmt_vid_cap_mplane = vdec_s_fmt,
 569         .vidioc_s_fmt_vid_out_mplane = vdec_s_fmt,
 570         .vidioc_g_fmt_vid_cap_mplane = vdec_g_fmt,
 571         .vidioc_g_fmt_vid_out_mplane = vdec_g_fmt,
 572         .vidioc_try_fmt_vid_cap_mplane = vdec_try_fmt,
 573         .vidioc_try_fmt_vid_out_mplane = vdec_try_fmt,
 574         .vidioc_g_selection = vdec_g_selection,
 575         .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
 576         .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
 577         .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
 578         .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
 579         .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
 580         .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
 581         .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
 582         .vidioc_streamon = v4l2_m2m_ioctl_streamon,
 583         .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
 584         .vidioc_s_parm = vdec_s_parm,
 585         .vidioc_enum_framesizes = vdec_enum_framesizes,
 586         .vidioc_subscribe_event = vdec_subscribe_event,
 587         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
 588         .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
 589         .vidioc_decoder_cmd = vdec_decoder_cmd,
 590 };
 591
 592 static int vdec_pm_get(struct venus_inst *inst)
 593 {
 594         struct venus_core *core = inst->core;
 595         struct device *dev = core->dev_dec;
 596         int ret;
 597
 598         mutex_lock(&core->pm_lock);
 599         ret = pm_runtime_resume_and_get(dev);
 600         mutex_unlock(&core->pm_lock);
 601
 602         return ret;
 603 }
 604
 605 static int vdec_pm_put(struct venus_inst *inst, bool autosuspend)
 606 {
 607         struct venus_core *core = inst->core;
 608         struct device *dev = core->dev_dec;
 609         int ret;
 610
 611         mutex_lock(&core->pm_lock);
 612
 613         if (autosuspend)
 614                 ret = pm_runtime_put_autosuspend(dev);
 615         else
 616                 ret = pm_runtime_put_sync(dev);
 617
 618         mutex_unlock(&core->pm_lock);
 619
 620         return ret < 0 ? ret : 0;
 621 }
 622
 623 static int vdec_pm_get_put(struct venus_inst *inst)
 624 {
 625         struct venus_core *core = inst->core;
 626         struct device *dev = core->dev_dec;
 627         int ret = 0;
 628
 629         mutex_lock(&core->pm_lock);
 630
 631         if (pm_runtime_suspended(dev)) {
 632                 ret = pm_runtime_resume_and_get(dev);
 633                 if (ret < 0)
 634                         goto error;
 635
 636                 ret = pm_runtime_put_autosuspend(dev);
 637         }
 638
 639 error:
 640         mutex_unlock(&core->pm_lock);
 641
 642         return ret < 0 ? ret : 0;
 643 }
 644
 645 static void vdec_pm_touch(struct venus_inst *inst)
 646 {
 647         pm_runtime_mark_last_busy(inst->core->dev_dec);
 648 }
 649
 650 static int vdec_set_properties(struct venus_inst *inst)
 651 {
 652         struct vdec_controls *ctr = &inst->controls.dec;
 653         struct hfi_enable en = { .enable = 1 };
 654         u32 ptype, decode_order, conceal;
 655         int ret;
 656
 657         if (ctr->post_loop_deb_mode) {
 658                 ptype = HFI_PROPERTY_CONFIG_VDEC_POST_LOOP_DEBLOCKER;
 659                 ret = hfi_session_set_property(inst, ptype, &en);
 660                 if (ret)
 661                         return ret;
 662         }
 663
 664         if (ctr->display_delay_enable && ctr->display_delay == 0) {
 665                 ptype = HFI_PROPERTY_PARAM_VDEC_OUTPUT_ORDER;
 666                 decode_order = HFI_OUTPUT_ORDER_DECODE;
 667                 ret = hfi_session_set_property(inst, ptype, &decode_order);
 668                 if (ret)
 669                         return ret;
 670         }
 671
 672         ptype = HFI_PROPERTY_PARAM_VDEC_CONCEAL_COLOR;
 673         conceal = ctr->conceal_color & 0xffff;
 674         conceal |= ((ctr->conceal_color >> 16) & 0xffff) << 10;
 675         conceal |= ((ctr->conceal_color >> 32) & 0xffff) << 20;
 676
 677         ret = hfi_session_set_property(inst, ptype, &conceal);
 678         if (ret)
 679                 return ret;
 680
 681         return 0;
 682 }
 683
 684 static int vdec_set_work_route(struct venus_inst *inst)
 685 {
 686         u32 ptype = HFI_PROPERTY_PARAM_WORK_ROUTE;
 687         struct hfi_video_work_route wr;
 688
 689         if (!IS_V6(inst->core))
 690                 return 0;
 691
 692         wr.video_work_route = inst->core->res->num_vpp_pipes;
 693
 694         return hfi_session_set_property(inst, ptype, &wr);
 695 }
 696
 697 #define is_ubwc_fmt(fmt) (!!((fmt) & HFI_COLOR_FORMAT_UBWC_BASE))
 698
 699 static int vdec_output_conf(struct venus_inst *inst)
 700 {
 701         struct venus_core *core = inst->core;
 702         struct hfi_enable en = { .enable = 1 };
 703         struct hfi_buffer_requirements bufreq;
 704         u32 width = inst->width;
 705         u32 height = inst->height;
 706         u32 out_fmt, out2_fmt;
 707         bool ubwc = false;
 708         u32 ptype;
 709         int ret;
 710
 711         ret = venus_helper_set_work_mode(inst);
 712         if (ret)
 713                 return ret;
 714
 715         if (core->res->hfi_version == HFI_VERSION_1XX) {
 716                 ptype = HFI_PROPERTY_PARAM_VDEC_CONTINUE_DATA_TRANSFER;
 717                 ret = hfi_session_set_property(inst, ptype, &en);
 718                 if (ret)
 719                         return ret;
 720         }
 721
 722         /* Force searching UBWC formats for bigger then HD resolutions */
 723         if (width > 1920 && height > ALIGN(1080, 32))
 724                 ubwc = true;
 725
 726         /* For Venus v4/v6 UBWC format is mandatory */
 727         if (IS_V4(core) || IS_V6(core))
 728                 ubwc = true;
 729
 730         ret = venus_helper_get_out_fmts(inst, inst->fmt_cap->pixfmt, &out_fmt,
 731                                         &out2_fmt, ubwc);
 732         if (ret)
 733                 return ret;
 734
 735         inst->output_buf_size =
 736                         venus_helper_get_framesz_raw(out_fmt, width, height);
 737         inst->output2_buf_size =
 738                         venus_helper_get_framesz_raw(out2_fmt, width, height);
 739
 740         if (is_ubwc_fmt(out_fmt)) {
 741                 inst->opb_buftype = HFI_BUFFER_OUTPUT2;
 742                 inst->opb_fmt = out2_fmt;
 743                 inst->dpb_buftype = HFI_BUFFER_OUTPUT;
 744                 inst->dpb_fmt = out_fmt;
 745         } else if (is_ubwc_fmt(out2_fmt)) {
 746                 inst->opb_buftype = HFI_BUFFER_OUTPUT;
 747                 inst->opb_fmt = out_fmt;
 748                 inst->dpb_buftype = HFI_BUFFER_OUTPUT2;
 749                 inst->dpb_fmt = out2_fmt;
 750         } else {
 751                 inst->opb_buftype = HFI_BUFFER_OUTPUT;
 752                 inst->opb_fmt = out_fmt;
 753                 inst->dpb_buftype = 0;
 754                 inst->dpb_fmt = 0;
 755         }
 756
 757         ret = venus_helper_set_raw_format(inst, inst->opb_fmt,
 758                                           inst->opb_buftype);
 759         if (ret)
 760                 return ret;
 761
 762         ret = venus_helper_set_format_constraints(inst);
 763         if (ret)
 764                 return ret;
 765
 766         if (inst->dpb_fmt) {
 767                 ret = venus_helper_set_multistream(inst, false, true);
 768                 if (ret)
 769                         return ret;
 770
 771                 ret = venus_helper_set_raw_format(inst, inst->dpb_fmt,
 772                                                   inst->dpb_buftype);
 773                 if (ret)
 774                         return ret;
 775
 776                 ret = venus_helper_set_output_resolution(inst, width, height,
 777                                                          HFI_BUFFER_OUTPUT2);
 778                 if (ret)
 779                         return ret;
 780         }
 781
 782         if (IS_V3(core) || IS_V4(core) || IS_V6(core)) {
 783                 ret = venus_helper_get_bufreq(inst, HFI_BUFFER_OUTPUT, &bufreq);
 784                 if (ret)
 785                         return ret;
 786
 787                 if (bufreq.size > inst->output_buf_size)
 788                         return -EINVAL;
 789
 790                 if (inst->dpb_fmt) {
 791                         ret = venus_helper_get_bufreq(inst, HFI_BUFFER_OUTPUT2,
 792                                                       &bufreq);
 793                         if (ret)
 794                                 return ret;
 795
 796                         if (bufreq.size > inst->output2_buf_size)
 797                                 return -EINVAL;
 798                 }
 799
 800                 if (inst->output2_buf_size) {
 801                         ret = venus_helper_set_bufsize(inst,
 802                                                        inst->output2_buf_size,
 803                                                        HFI_BUFFER_OUTPUT2);
 804                         if (ret)
 805                                 return ret;
 806                 }
 807
 808                 if (inst->output_buf_size) {
 809                         ret = venus_helper_set_bufsize(inst,
 810                                                        inst->output_buf_size,
 811                                                        HFI_BUFFER_OUTPUT);
 812                         if (ret)
 813                                 return ret;
 814                 }
 815         }
 816
 817         ret = venus_helper_set_dyn_bufmode(inst);
 818         if (ret)
 819                 return ret;
 820
 821         return 0;
 822 }
 823
 824 static int vdec_session_init(struct venus_inst *inst)
 825 {
 826         int ret;
 827
 828         ret = venus_helper_session_init(inst);
 829         if (ret == -EALREADY)
 830                 return 0;
 831         else if (ret)
 832                 return ret;
 833
 834         ret = venus_helper_set_input_resolution(inst, frame_width_min(inst),
 835                                                 frame_height_min(inst));
 836         if (ret)
 837                 goto deinit;
 838
 839         return 0;
 840 deinit:
 841         hfi_session_deinit(inst);
 842         return ret;
 843 }
 844
 845 static int vdec_num_buffers(struct venus_inst *inst, unsigned int *in_num,
 846                             unsigned int *out_num)
 847 {
 848         enum hfi_version ver = inst->core->res->hfi_version;
 849         struct hfi_buffer_requirements bufreq;
 850         int ret;
 851
 852         *in_num = *out_num = 0;
 853
 854         ret = venus_helper_get_bufreq(inst, HFI_BUFFER_INPUT, &bufreq);
 855         if (ret)
 856                 return ret;
 857
 858         *in_num = HFI_BUFREQ_COUNT_MIN(&bufreq, ver);
 859
 860         ret = venus_helper_get_bufreq(inst, HFI_BUFFER_OUTPUT, &bufreq);
 861         if (ret)
 862                 return ret;
 863
 864         *out_num = HFI_BUFREQ_COUNT_MIN(&bufreq, ver);
 865
 866         return 0;
 867 }
 868
 869 static int vdec_queue_setup(struct vb2_queue *q,
 870                             unsigned int *num_buffers, unsigned int *num_planes,
 871                             unsigned int sizes[], struct device *alloc_devs[])
 872 {
 873         struct venus_inst *inst = vb2_get_drv_priv(q);
 874         struct venus_core *core = inst->core;
 875         unsigned int in_num, out_num;
 876         int ret = 0;
 877
 878         if (*num_planes) {
 879                 unsigned int output_buf_size = venus_helper_get_opb_size(inst);
 880
 881                 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
 882                     *num_planes != inst->fmt_out->num_planes)
 883                         return -EINVAL;
 884
 885                 if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
 886                     *num_planes != inst->fmt_cap->num_planes)
 887                         return -EINVAL;
 888
 889                 if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
 890                     sizes[0] < inst->input_buf_size)
 891                         return -EINVAL;
 892
 893                 if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
 894                     sizes[0] < output_buf_size)
 895                         return -EINVAL;
 896
 897                 return 0;
 898         }
 899
 900         if (test_bit(0, &core->sys_error)) {
 901                 if (inst->nonblock)
 902                         return -EAGAIN;
 903
 904                 ret = wait_event_interruptible(core->sys_err_done,
 905                                                !test_bit(0, &core->sys_error));
 906                 if (ret)
 907                         return ret;
 908         }
 909
 910         ret = vdec_pm_get(inst);
 911         if (ret)
 912                 return ret;
 913
 914         ret = vdec_session_init(inst);
 915         if (ret)
 916                 goto put_power;
 917
 918         ret = vdec_num_buffers(inst, &in_num, &out_num);
 919         if (ret)
 920                 goto put_power;
 921
 922         ret = vdec_pm_put(inst, false);
 923         if (ret)
 924                 return ret;
 925
 926         switch (q->type) {
 927         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
 928                 *num_planes = inst->fmt_out->num_planes;
 929                 sizes[0] = venus_helper_get_framesz(inst->fmt_out->pixfmt,
 930                                                     inst->out_width,
 931                                                     inst->out_height);
 932                 sizes[0] = max(sizes[0], inst->input_buf_size);
 933                 inst->input_buf_size = sizes[0];
 934                 *num_buffers = max(*num_buffers, in_num);
 935                 inst->num_input_bufs = *num_buffers;
 936                 inst->num_output_bufs = out_num;
 937                 break;
 938         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
 939                 *num_planes = inst->fmt_cap->num_planes;
 940                 sizes[0] = venus_helper_get_framesz(inst->fmt_cap->pixfmt,
 941                                                     inst->width,
 942                                                     inst->height);
 943                 inst->output_buf_size = sizes[0];
 944                 *num_buffers = max(*num_buffers, out_num);
 945                 inst->num_output_bufs = *num_buffers;
 946
 947                 mutex_lock(&inst->lock);
 948                 if (inst->codec_state == VENUS_DEC_STATE_CAPTURE_SETUP)
 949                         inst->codec_state = VENUS_DEC_STATE_STOPPED;
 950                 mutex_unlock(&inst->lock);
 951                 break;
 952         default:
 953                 ret = -EINVAL;
 954                 break;
 955         }
 956
 957         return ret;
 958
 959 put_power:
 960         vdec_pm_put(inst, false);
 961         return ret;
 962 }
 963
 964 static int vdec_verify_conf(struct venus_inst *inst)
 965 {
 966         enum hfi_version ver = inst->core->res->hfi_version;
 967         struct hfi_buffer_requirements bufreq;
 968         int ret;
 969
 970         if (!inst->num_input_bufs || !inst->num_output_bufs)
 971                 return -EINVAL;
 972
 973         ret = venus_helper_get_bufreq(inst, HFI_BUFFER_OUTPUT, &bufreq);
 974         if (ret)
 975                 return ret;
 976
 977         if (inst->num_output_bufs < bufreq.count_actual ||
 978             inst->num_output_bufs < HFI_BUFREQ_COUNT_MIN(&bufreq, ver))
 979                 return -EINVAL;
 980
 981         ret = venus_helper_get_bufreq(inst, HFI_BUFFER_INPUT, &bufreq);
 982         if (ret)
 983                 return ret;
 984
 985         if (inst->num_input_bufs < HFI_BUFREQ_COUNT_MIN(&bufreq, ver))
 986                 return -EINVAL;
 987
 988         return 0;
 989 }
 990
 991 static int vdec_start_capture(struct venus_inst *inst)
 992 {
 993         int ret;
 994
 995         if (!inst->streamon_out)
 996                 return 0;
 997
 998         if (inst->codec_state == VENUS_DEC_STATE_DECODING) {
 999                 if (inst->reconfig)
1000                         goto reconfigure;
1001
1002                 venus_helper_queue_dpb_bufs(inst);
1003                 venus_helper_process_initial_cap_bufs(inst);
1004                 inst->streamon_cap = 1;
1005                 return 0;
1006         }
1007
1008         if (inst->codec_state != VENUS_DEC_STATE_STOPPED)
1009                 return 0;
1010
1011 reconfigure:
1012         ret = vdec_output_conf(inst);
1013         if (ret)
1014                 return ret;
1015
1016         ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,
1017                                         VB2_MAX_FRAME, VB2_MAX_FRAME);
1018         if (ret)
1019                 return ret;
1020
1021         ret = venus_helper_intbufs_realloc(inst);
1022         if (ret)
1023                 goto err;
1024
1025         venus_pm_load_scale(inst);
1026
1027         inst->next_buf_last = false;
1028
1029         ret = venus_helper_alloc_dpb_bufs(inst);
1030         if (ret)
1031                 goto err;
1032
1033         ret = hfi_session_continue(inst);
1034         if (ret)
1035                 goto free_dpb_bufs;
1036
1037         ret = venus_helper_queue_dpb_bufs(inst);
1038         if (ret)
1039                 goto free_dpb_bufs;
1040
1041         ret = venus_helper_process_initial_cap_bufs(inst);
1042         if (ret)
1043                 goto free_dpb_bufs;
1044
1045         inst->codec_state = VENUS_DEC_STATE_DECODING;
1046
1047         if (inst->drain_active)
1048                 inst->codec_state = VENUS_DEC_STATE_DRAIN;
1049
1050         inst->streamon_cap = 1;
1051         inst->sequence_cap = 0;
1052         inst->reconfig = false;
1053         inst->drain_active = false;
1054
1055         return 0;
1056
1057 free_dpb_bufs:
1058         venus_helper_free_dpb_bufs(inst);
1059 err:
1060         return ret;
1061 }
1062
1063 static int vdec_start_output(struct venus_inst *inst)
1064 {
1065         int ret;
1066
1067         if (inst->codec_state == VENUS_DEC_STATE_SEEK) {
1068                 ret = venus_helper_process_initial_out_bufs(inst);
1069                 if (inst->next_buf_last)
1070                         inst->codec_state = VENUS_DEC_STATE_DRC;
1071                 else
1072                         inst->codec_state = VENUS_DEC_STATE_DECODING;
1073                 goto done;
1074         }
1075
1076         if (inst->codec_state == VENUS_DEC_STATE_INIT ||
1077             inst->codec_state == VENUS_DEC_STATE_CAPTURE_SETUP) {
1078                 ret = venus_helper_process_initial_out_bufs(inst);
1079                 goto done;
1080         }
1081
1082         if (inst->codec_state != VENUS_DEC_STATE_DEINIT)
1083                 return -EINVAL;
1084
1085         venus_helper_init_instance(inst);
1086         inst->sequence_out = 0;
1087         inst->reconfig = false;
1088         inst->next_buf_last = false;
1089
1090         ret = vdec_set_properties(inst);
1091         if (ret)
1092                 return ret;
1093
1094         ret = vdec_set_work_route(inst);
1095         if (ret)
1096                 return ret;
1097
1098         ret = vdec_output_conf(inst);
1099         if (ret)
1100                 return ret;
1101
1102         ret = vdec_verify_conf(inst);
1103         if (ret)
1104                 return ret;
1105
1106         ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,
1107                                         VB2_MAX_FRAME, VB2_MAX_FRAME);
1108         if (ret)
1109                 return ret;
1110
1111         ret = venus_helper_vb2_start_streaming(inst);
1112         if (ret)
1113                 return ret;
1114
1115         ret = venus_helper_process_initial_out_bufs(inst);
1116         if (ret)
1117                 return ret;
1118
1119         inst->codec_state = VENUS_DEC_STATE_INIT;
1120
1121 done:
1122         inst->streamon_out = 1;
1123         return ret;
1124 }
1125
1126 static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
1127 {
1128         struct venus_inst *inst = vb2_get_drv_priv(q);
1129         int ret;
1130
1131         mutex_lock(&inst->lock);
1132
1133         if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
1134                 ret = vdec_start_capture(inst);
1135         } else {
1136                 ret = vdec_pm_get(inst);
1137                 if (ret)
1138                         goto error;
1139
1140                 ret = venus_pm_acquire_core(inst);
1141                 if (ret)
1142                         goto put_power;
1143
1144                 ret = vdec_pm_put(inst, true);
1145                 if (ret)
1146                         goto error;
1147
1148                 ret = vdec_start_output(inst);
1149         }
1150
1151         if (ret)
1152                 goto error;
1153
1154         mutex_unlock(&inst->lock);
1155         return 0;
1156
1157 put_power:
1158         vdec_pm_put(inst, false);
1159 error:
1160         venus_helper_buffers_done(inst, q->type, VB2_BUF_STATE_QUEUED);
1161         mutex_unlock(&inst->lock);
1162         return ret;
1163 }
1164
1165 static void vdec_cancel_dst_buffers(struct venus_inst *inst)
1166 {
1167         struct vb2_v4l2_buffer *buf;
1168
1169         while ((buf = v4l2_m2m_dst_buf_remove(inst->m2m_ctx)))
1170                 v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
1171 }
1172
1173 static int vdec_stop_capture(struct venus_inst *inst)
1174 {
1175         int ret = 0;
1176
1177         switch (inst->codec_state) {
1178         case VENUS_DEC_STATE_DECODING:
1179                 ret = hfi_session_flush(inst, HFI_FLUSH_ALL, true);
1180                 fallthrough;
1181         case VENUS_DEC_STATE_DRAIN:
1182                 inst->codec_state = VENUS_DEC_STATE_STOPPED;
1183                 inst->drain_active = false;
1184                 fallthrough;
1185         case VENUS_DEC_STATE_SEEK:
1186                 vdec_cancel_dst_buffers(inst);
1187                 break;
1188         case VENUS_DEC_STATE_DRC:
1189                 ret = hfi_session_flush(inst, HFI_FLUSH_OUTPUT, true);
1190                 inst->codec_state = VENUS_DEC_STATE_CAPTURE_SETUP;
1191                 venus_helper_free_dpb_bufs(inst);
1192                 break;
1193         default:
1194                 break;
1195         }
1196
1197         return ret;
1198 }
1199
1200 static int vdec_stop_output(struct venus_inst *inst)
1201 {
1202         int ret = 0;
1203
1204         switch (inst->codec_state) {
1205         case VENUS_DEC_STATE_DECODING:
1206         case VENUS_DEC_STATE_DRAIN:
1207         case VENUS_DEC_STATE_STOPPED:
1208         case VENUS_DEC_STATE_DRC:
1209                 ret = hfi_session_flush(inst, HFI_FLUSH_ALL, true);
1210                 inst->codec_state = VENUS_DEC_STATE_SEEK;
1211                 break;
1212         case VENUS_DEC_STATE_INIT:
1213         case VENUS_DEC_STATE_CAPTURE_SETUP:
1214                 ret = hfi_session_flush(inst, HFI_FLUSH_INPUT, true);
1215                 break;
1216         default:
1217                 break;
1218         }
1219
1220         return ret;
1221 }
1222
1223 static void vdec_stop_streaming(struct vb2_queue *q)
1224 {
1225         struct venus_inst *inst = vb2_get_drv_priv(q);
1226         int ret = -EINVAL;
1227
1228         vdec_pm_get_put(inst);
1229
1230         mutex_lock(&inst->lock);
1231
1232         if (q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1233                 ret = vdec_stop_capture(inst);
1234         else
1235                 ret = vdec_stop_output(inst);
1236
1237         venus_helper_buffers_done(inst, q->type, VB2_BUF_STATE_ERROR);
1238
1239         inst->session_error = 0;
1240
1241         if (ret)
1242                 goto unlock;
1243
1244         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1245                 inst->streamon_out = 0;
1246         else
1247                 inst->streamon_cap = 0;
1248
1249 unlock:
1250         mutex_unlock(&inst->lock);
1251 }
1252
1253 static void vdec_session_release(struct venus_inst *inst)
1254 {
1255         struct venus_core *core = inst->core;
1256         int ret, abort = 0;
1257
1258         vdec_pm_get(inst);
1259
1260         mutex_lock(&inst->lock);
1261         inst->codec_state = VENUS_DEC_STATE_DEINIT;
1262
1263         ret = hfi_session_stop(inst);
1264         abort = (ret && ret != -EINVAL) ? 1 : 0;
1265         ret = hfi_session_unload_res(inst);
1266         abort = (ret && ret != -EINVAL) ? 1 : 0;
1267         ret = venus_helper_unregister_bufs(inst);
1268         abort = (ret && ret != -EINVAL) ? 1 : 0;
1269         ret = venus_helper_intbufs_free(inst);
1270         abort = (ret && ret != -EINVAL) ? 1 : 0;
1271         ret = hfi_session_deinit(inst);
1272         abort = (ret && ret != -EINVAL) ? 1 : 0;
1273
1274         if (inst->session_error || test_bit(0, &core->sys_error))
1275                 abort = 1;
1276
1277         if (abort)
1278                 hfi_session_abort(inst);
1279
1280         venus_helper_free_dpb_bufs(inst);
1281         venus_pm_load_scale(inst);
1282         INIT_LIST_HEAD(&inst->registeredbufs);
1283         mutex_unlock(&inst->lock);
1284
1285         venus_pm_release_core(inst);
1286         vdec_pm_put(inst, false);
1287 }
1288
1289 static int vdec_buf_init(struct vb2_buffer *vb)
1290 {
1291         struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
1292
1293         inst->buf_count++;
1294
1295         return venus_helper_vb2_buf_init(vb);
1296 }
1297
1298 static void vdec_buf_cleanup(struct vb2_buffer *vb)
1299 {
1300         struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
1301         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1302         struct venus_buffer *buf = to_venus_buffer(vbuf);
1303
1304         mutex_lock(&inst->lock);
1305         if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
1306                 if (!list_empty(&inst->registeredbufs))
1307                         list_del_init(&buf->reg_list);
1308         mutex_unlock(&inst->lock);
1309
1310         inst->buf_count--;
1311         if (!inst->buf_count)
1312                 vdec_session_release(inst);
1313 }
1314
1315 static void vdec_vb2_buf_queue(struct vb2_buffer *vb)
1316 {
1317         struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
1318         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1319         static const struct v4l2_event eos = { .type = V4L2_EVENT_EOS };
1320
1321         vdec_pm_get_put(inst);
1322
1323         mutex_lock(&inst->lock);
1324
1325         if (inst->next_buf_last && V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type) &&
1326             inst->codec_state == VENUS_DEC_STATE_DRC) {
1327                 vbuf->flags |= V4L2_BUF_FLAG_LAST;
1328                 vbuf->sequence = inst->sequence_cap++;
1329                 vbuf->field = V4L2_FIELD_NONE;
1330                 vb2_set_plane_payload(vb, 0, 0);
1331                 v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
1332                 v4l2_event_queue_fh(&inst->fh, &eos);
1333                 inst->next_buf_last = false;
1334                 mutex_unlock(&inst->lock);
1335                 return;
1336         }
1337
1338         venus_helper_vb2_buf_queue(vb);
1339         mutex_unlock(&inst->lock);
1340 }
1341
1342 static const struct vb2_ops vdec_vb2_ops = {
1343         .queue_setup = vdec_queue_setup,
1344         .buf_init = vdec_buf_init,
1345         .buf_cleanup = vdec_buf_cleanup,
1346         .buf_prepare = venus_helper_vb2_buf_prepare,
1347         .start_streaming = vdec_start_streaming,
1348         .stop_streaming = vdec_stop_streaming,
1349         .buf_queue = vdec_vb2_buf_queue,
1350 };
1351
1352 static void vdec_buf_done(struct venus_inst *inst, unsigned int buf_type,
1353                           u32 tag, u32 bytesused, u32 data_offset, u32 flags,
1354                           u32 hfi_flags, u64 timestamp_us)
1355 {
1356         enum vb2_buffer_state state = VB2_BUF_STATE_DONE;
1357         struct vb2_v4l2_buffer *vbuf;
1358         struct vb2_buffer *vb;
1359         unsigned int type;
1360
1361         vdec_pm_touch(inst);
1362
1363         if (buf_type == HFI_BUFFER_INPUT)
1364                 type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1365         else
1366                 type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1367
1368         vbuf = venus_helper_find_buf(inst, type, tag);
1369         if (!vbuf) {
1370                 venus_helper_change_dpb_owner(inst, vbuf, type, buf_type, tag);
1371                 return;
1372         }
1373
1374         vbuf->flags = flags;
1375         vbuf->field = V4L2_FIELD_NONE;
1376         vb = &vbuf->vb2_buf;
1377
1378         if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
1379                 vb2_set_plane_payload(vb, 0, bytesused);
1380                 vb->planes[0].data_offset = data_offset;
1381                 vb->timestamp = timestamp_us * NSEC_PER_USEC;
1382                 vbuf->sequence = inst->sequence_cap++;
1383
1384                 if (vbuf->flags & V4L2_BUF_FLAG_LAST) {
1385                         const struct v4l2_event ev = { .type = V4L2_EVENT_EOS };
1386
1387                         v4l2_event_queue_fh(&inst->fh, &ev);
1388
1389                         if (inst->codec_state == VENUS_DEC_STATE_DRAIN) {
1390                                 inst->drain_active = false;
1391                                 inst->codec_state = VENUS_DEC_STATE_STOPPED;
1392                         }
1393                 }
1394
1395                 if (!bytesused)
1396                         state = VB2_BUF_STATE_ERROR;
1397         } else {
1398                 vbuf->sequence = inst->sequence_out++;
1399         }
1400
1401         venus_helper_get_ts_metadata(inst, timestamp_us, vbuf);
1402
1403         if (hfi_flags & HFI_BUFFERFLAG_READONLY)
1404                 venus_helper_acquire_buf_ref(vbuf);
1405
1406         if (hfi_flags & HFI_BUFFERFLAG_DATACORRUPT)
1407                 state = VB2_BUF_STATE_ERROR;
1408
1409         if (hfi_flags & HFI_BUFFERFLAG_DROP_FRAME) {
1410                 state = VB2_BUF_STATE_ERROR;
1411                 vb2_set_plane_payload(vb, 0, 0);
1412                 vb->timestamp = 0;
1413         }
1414
1415         v4l2_m2m_buf_done(vbuf, state);
1416 }
1417
1418 static void vdec_event_change(struct venus_inst *inst,
1419                               struct hfi_event_data *ev_data, bool sufficient)
1420 {
1421         static const struct v4l2_event ev = {
1422                 .type = V4L2_EVENT_SOURCE_CHANGE,
1423                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION };
1424         struct device *dev = inst->core->dev_dec;
1425         struct v4l2_format format = {};
1426
1427         mutex_lock(&inst->lock);
1428
1429         format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1430         format.fmt.pix_mp.pixelformat = inst->fmt_cap->pixfmt;
1431         format.fmt.pix_mp.width = ev_data->width;
1432         format.fmt.pix_mp.height = ev_data->height;
1433
1434         vdec_try_fmt_common(inst, &format);
1435
1436         inst->width = format.fmt.pix_mp.width;
1437         inst->height = format.fmt.pix_mp.height;
1438         /*
1439          * Some versions of the firmware do not report crop information for
1440          * all codecs. For these cases, set the crop to the coded resolution.
1441          */
1442         if (ev_data->input_crop.width > 0 && ev_data->input_crop.height > 0) {
1443                 inst->crop.left = ev_data->input_crop.left;
1444                 inst->crop.top = ev_data->input_crop.top;
1445                 inst->crop.width = ev_data->input_crop.width;
1446                 inst->crop.height = ev_data->input_crop.height;
1447         } else {
1448                 inst->crop.left = 0;
1449                 inst->crop.top = 0;
1450                 inst->crop.width = ev_data->width;
1451                 inst->crop.height = ev_data->height;
1452         }
1453
1454         inst->fw_min_cnt = ev_data->buf_count;
1455         /* overwriting this to 11 for vp9 due to fw bug */
1456         if (inst->hfi_codec == HFI_VIDEO_CODEC_VP9)
1457                 inst->fw_min_cnt = 11;
1458
1459         inst->out_width = ev_data->width;
1460         inst->out_height = ev_data->height;
1461
1462         if (inst->bit_depth != ev_data->bit_depth)
1463                 inst->bit_depth = ev_data->bit_depth;
1464
1465         if (inst->pic_struct != ev_data->pic_struct)
1466                 inst->pic_struct = ev_data->pic_struct;
1467
1468         dev_dbg(dev, VDBGM "event %s sufficient resources (%ux%u)\n",
1469                 sufficient ? "" : "not", ev_data->width, ev_data->height);
1470
1471         switch (inst->codec_state) {
1472         case VENUS_DEC_STATE_INIT:
1473                 inst->codec_state = VENUS_DEC_STATE_CAPTURE_SETUP;
1474                 break;
1475         case VENUS_DEC_STATE_DECODING:
1476         case VENUS_DEC_STATE_DRAIN:
1477                 inst->codec_state = VENUS_DEC_STATE_DRC;
1478                 break;
1479         default:
1480                 break;
1481         }
1482
1483         /*
1484          * The assumption is that the firmware have to return the last buffer
1485          * before this event is received in the v4l2 driver. Also the firmware
1486          * itself doesn't mark the last decoder output buffer with HFI EOS flag.
1487          */
1488
1489         if (inst->codec_state == VENUS_DEC_STATE_DRC) {
1490                 int ret;
1491
1492                 inst->next_buf_last = true;
1493
1494                 ret = hfi_session_flush(inst, HFI_FLUSH_OUTPUT, false);
1495                 if (ret)
1496                         dev_dbg(dev, VDBGH "flush output error %d\n", ret);
1497         }
1498
1499         inst->next_buf_last = true;
1500         inst->reconfig = true;
1501         v4l2_event_queue_fh(&inst->fh, &ev);
1502         wake_up(&inst->reconf_wait);
1503
1504         mutex_unlock(&inst->lock);
1505 }
1506
1507 static void vdec_event_notify(struct venus_inst *inst, u32 event,
1508                               struct hfi_event_data *data)
1509 {
1510         struct venus_core *core = inst->core;
1511         struct device *dev = core->dev_dec;
1512
1513         vdec_pm_touch(inst);
1514
1515         switch (event) {
1516         case EVT_SESSION_ERROR:
1517                 inst->session_error = true;
1518                 venus_helper_vb2_queue_error(inst);
1519                 dev_err(dev, "dec: event session error %x\n", inst->error);
1520                 break;
1521         case EVT_SYS_EVENT_CHANGE:
1522                 switch (data->event_type) {
1523                 case HFI_EVENT_DATA_SEQUENCE_CHANGED_SUFFICIENT_BUF_RESOURCES:
1524                         vdec_event_change(inst, data, true);
1525                         break;
1526                 case HFI_EVENT_DATA_SEQUENCE_CHANGED_INSUFFICIENT_BUF_RESOURCES:
1527                         vdec_event_change(inst, data, false);
1528                         break;
1529                 case HFI_EVENT_RELEASE_BUFFER_REFERENCE:
1530                         venus_helper_release_buf_ref(inst, data->tag);
1531                         break;
1532                 default:
1533                         break;
1534                 }
1535                 break;
1536         default:
1537                 break;
1538         }
1539 }
1540
1541 static void vdec_flush_done(struct venus_inst *inst)
1542 {
1543         dev_dbg(inst->core->dev_dec, VDBGH "flush done\n");
1544 }
1545
1546 static const struct hfi_inst_ops vdec_hfi_ops = {
1547         .buf_done = vdec_buf_done,
1548         .event_notify = vdec_event_notify,
1549         .flush_done = vdec_flush_done,
1550 };
1551
1552 static void vdec_inst_init(struct venus_inst *inst)
1553 {
1554         inst->hfi_codec = HFI_VIDEO_CODEC_H264;
1555         inst->fmt_out = &vdec_formats[8];
1556         inst->fmt_cap = &vdec_formats[0];
1557         inst->width = frame_width_min(inst);
1558         inst->height = ALIGN(frame_height_min(inst), 32);
1559         inst->crop.left = 0;
1560         inst->crop.top = 0;
1561         inst->crop.width = inst->width;
1562         inst->crop.height = inst->height;
1563         inst->fw_min_cnt = 8;
1564         inst->out_width = frame_width_min(inst);
1565         inst->out_height = frame_height_min(inst);
1566         inst->fps = 30;
1567         inst->timeperframe.numerator = 1;
1568         inst->timeperframe.denominator = 30;
1569         inst->opb_buftype = HFI_BUFFER_OUTPUT;
1570 }
1571
1572 static void vdec_m2m_device_run(void *priv)
1573 {
1574 }
1575
1576 static const struct v4l2_m2m_ops vdec_m2m_ops = {
1577         .device_run = vdec_m2m_device_run,
1578         .job_abort = venus_helper_m2m_job_abort,
1579 };
1580
1581 static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
1582                           struct vb2_queue *dst_vq)
1583 {
1584         struct venus_inst *inst = priv;
1585         int ret;
1586
1587         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1588         src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1589         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1590         src_vq->ops = &vdec_vb2_ops;
1591         src_vq->mem_ops = &vb2_dma_contig_memops;
1592         src_vq->drv_priv = inst;
1593         src_vq->buf_struct_size = sizeof(struct venus_buffer);
1594         src_vq->allow_zero_bytesused = 1;
1595         src_vq->min_buffers_needed = 0;
1596         src_vq->dev = inst->core->dev;
1597         ret = vb2_queue_init(src_vq);
1598         if (ret)
1599                 return ret;
1600
1601         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1602         dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1603         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1604         dst_vq->ops = &vdec_vb2_ops;
1605         dst_vq->mem_ops = &vb2_dma_contig_memops;
1606         dst_vq->drv_priv = inst;
1607         dst_vq->buf_struct_size = sizeof(struct venus_buffer);
1608         dst_vq->allow_zero_bytesused = 1;
1609         dst_vq->min_buffers_needed = 0;
1610         dst_vq->dev = inst->core->dev;
1611         return vb2_queue_init(dst_vq);
1612 }
1613
1614 static int vdec_open(struct file *file)
1615 {
1616         struct venus_core *core = video_drvdata(file);
1617         struct venus_inst *inst;
1618         int ret;
1619
1620         inst = kzalloc(sizeof(*inst), GFP_KERNEL);
1621         if (!inst)
1622                 return -ENOMEM;
1623
1624         INIT_LIST_HEAD(&inst->dpbbufs);
1625         INIT_LIST_HEAD(&inst->registeredbufs);
1626         INIT_LIST_HEAD(&inst->internalbufs);
1627         INIT_LIST_HEAD(&inst->list);
1628         mutex_init(&inst->lock);
1629
1630         inst->core = core;
1631         inst->session_type = VIDC_SESSION_TYPE_DEC;
1632         inst->num_output_bufs = 1;
1633         inst->codec_state = VENUS_DEC_STATE_DEINIT;
1634         inst->buf_count = 0;
1635         inst->clk_data.core_id = VIDC_CORE_ID_DEFAULT;
1636         inst->core_acquired = false;
1637         inst->bit_depth = VIDC_BITDEPTH_8;
1638         inst->pic_struct = HFI_INTERLACE_FRAME_PROGRESSIVE;
1639         init_waitqueue_head(&inst->reconf_wait);
1640         inst->nonblock = file->f_flags & O_NONBLOCK;
1641
1642         venus_helper_init_instance(inst);
1643
1644         ret = vdec_ctrl_init(inst);
1645         if (ret)
1646                 goto err_free;
1647
1648         ret = hfi_session_create(inst, &vdec_hfi_ops);
1649         if (ret)
1650                 goto err_ctrl_deinit;
1651
1652         vdec_inst_init(inst);
1653
1654         ida_init(&inst->dpb_ids);
1655
1656         /*
1657          * create m2m device for every instance, the m2m context scheduling
1658          * is made by firmware side so we do not need to care about.
1659          */
1660         inst->m2m_dev = v4l2_m2m_init(&vdec_m2m_ops);
1661         if (IS_ERR(inst->m2m_dev)) {
1662                 ret = PTR_ERR(inst->m2m_dev);
1663                 goto err_session_destroy;
1664         }
1665
1666         inst->m2m_ctx = v4l2_m2m_ctx_init(inst->m2m_dev, inst, m2m_queue_init);
1667         if (IS_ERR(inst->m2m_ctx)) {
1668                 ret = PTR_ERR(inst->m2m_ctx);
1669                 goto err_m2m_release;
1670         }
1671
1672         v4l2_fh_init(&inst->fh, core->vdev_dec);
1673
1674         inst->fh.ctrl_handler = &inst->ctrl_handler;
1675         v4l2_fh_add(&inst->fh);
1676         inst->fh.m2m_ctx = inst->m2m_ctx;
1677         file->private_data = &inst->fh;
1678
1679         return 0;
1680
1681 err_m2m_release:
1682         v4l2_m2m_release(inst->m2m_dev);
1683 err_session_destroy:
1684         hfi_session_destroy(inst);
1685 err_ctrl_deinit:
1686         vdec_ctrl_deinit(inst);
1687 err_free:
1688         kfree(inst);
1689         return ret;
1690 }
1691
1692 static int vdec_close(struct file *file)
1693 {
1694         struct venus_inst *inst = to_inst(file);
1695
1696         vdec_pm_get(inst);
1697
1698         v4l2_m2m_ctx_release(inst->m2m_ctx);
1699         v4l2_m2m_release(inst->m2m_dev);
1700         vdec_ctrl_deinit(inst);
1701         ida_destroy(&inst->dpb_ids);
1702         hfi_session_destroy(inst);
1703         mutex_destroy(&inst->lock);
1704         v4l2_fh_del(&inst->fh);
1705         v4l2_fh_exit(&inst->fh);
1706
1707         vdec_pm_put(inst, false);
1708
1709         kfree(inst);
1710         return 0;
1711 }
1712
1713 static const struct v4l2_file_operations vdec_fops = {
1714         .owner = THIS_MODULE,
1715         .open = vdec_open,
1716         .release = vdec_close,
1717         .unlocked_ioctl = video_ioctl2,
1718         .poll = v4l2_m2m_fop_poll,
1719         .mmap = v4l2_m2m_fop_mmap,
1720 };
1721
1722 static int vdec_probe(struct platform_device *pdev)
1723 {
1724         struct device *dev = &pdev->dev;
1725         struct video_device *vdev;
1726         struct venus_core *core;
1727         int ret;
1728
1729         if (!dev->parent)
1730                 return -EPROBE_DEFER;
1731
1732         core = dev_get_drvdata(dev->parent);
1733         if (!core)
1734                 return -EPROBE_DEFER;
1735
1736         platform_set_drvdata(pdev, core);
1737
1738         if (core->pm_ops->vdec_get) {
1739                 ret = core->pm_ops->vdec_get(dev);
1740                 if (ret)
1741                         return ret;
1742         }
1743
1744         vdev = video_device_alloc();
1745         if (!vdev)
1746                 return -ENOMEM;
1747
1748         strscpy(vdev->name, "qcom-venus-decoder", sizeof(vdev->name));
1749         vdev->release = video_device_release;
1750         vdev->fops = &vdec_fops;
1751         vdev->ioctl_ops = &vdec_ioctl_ops;
1752         vdev->vfl_dir = VFL_DIR_M2M;
1753         vdev->v4l2_dev = &core->v4l2_dev;
1754         vdev->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
1755
1756         ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
1757         if (ret)
1758                 goto err_vdev_release;
1759
1760         core->vdev_dec = vdev;
1761         core->dev_dec = dev;
1762
1763         video_set_drvdata(vdev, core);
1764         pm_runtime_set_autosuspend_delay(dev, 2000);
1765         pm_runtime_use_autosuspend(dev);
1766         pm_runtime_enable(dev);
1767
1768         return 0;
1769
1770 err_vdev_release:
1771         video_device_release(vdev);
1772         return ret;
1773 }
1774
1775 static int vdec_remove(struct platform_device *pdev)
1776 {
1777         struct venus_core *core = dev_get_drvdata(pdev->dev.parent);
1778
1779         video_unregister_device(core->vdev_dec);
1780         pm_runtime_disable(core->dev_dec);
1781
1782         if (core->pm_ops->vdec_put)
1783                 core->pm_ops->vdec_put(core->dev_dec);
1784
1785         return 0;
1786 }
1787
1788 static __maybe_unused int vdec_runtime_suspend(struct device *dev)
1789 {
1790         struct venus_core *core = dev_get_drvdata(dev);
1791         const struct venus_pm_ops *pm_ops = core->pm_ops;
1792         int ret = 0;
1793
1794         if (pm_ops->vdec_power)
1795                 ret = pm_ops->vdec_power(dev, POWER_OFF);
1796
1797         return ret;
1798 }
1799
1800 static __maybe_unused int vdec_runtime_resume(struct device *dev)
1801 {
1802         struct venus_core *core = dev_get_drvdata(dev);
1803         const struct venus_pm_ops *pm_ops = core->pm_ops;
1804         int ret = 0;
1805
1806         if (pm_ops->vdec_power)
1807                 ret = pm_ops->vdec_power(dev, POWER_ON);
1808
1809         return ret;
1810 }
1811
1812 static const struct dev_pm_ops vdec_pm_ops = {
1813         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1814                                 pm_runtime_force_resume)
1815         SET_RUNTIME_PM_OPS(vdec_runtime_suspend, vdec_runtime_resume, NULL)
1816 };
1817
1818 static const struct of_device_id vdec_dt_match[] = {
1819         { .compatible = "venus-decoder" },
1820         { }
1821 };
1822 MODULE_DEVICE_TABLE(of, vdec_dt_match);
1823
1824 static struct platform_driver qcom_venus_dec_driver = {
1825         .probe = vdec_probe,
1826         .remove = vdec_remove,
1827         .driver = {
1828                 .name = "qcom-venus-decoder",
1829                 .of_match_table = vdec_dt_match,
1830                 .pm = &vdec_pm_ops,
1831         },
1832 };
1833 module_platform_driver(qcom_venus_dec_driver);
1834
1835 MODULE_ALIAS("platform:qcom-venus-decoder");
1836 MODULE_DESCRIPTION("Qualcomm Venus video decoder driver");
1837 MODULE_LICENSE("GPL v2");