[PATCH v4 00/15] media: mtk-vcodec: support for MT8183 decoder

[Alexandre Courbot <acourbot@chromium.org>]

This series adds support for the stateless API into mtk-vcodec, by first
separating the stateful ops into their own source file, and introducing
a new set of ops suitable for stateless decoding. As such, support for
stateful decoders should remain completely unaffected.

This series has been tested with both MT8183 and MT8173. Decoding was
working for both chips, and in the case of MT8173 no regression has been
noticed.

Patches 1-9 add MT8183 support to the decoder using the stateless API.
MT8183 only support H.264 acceleration.

Patches 10-15 are follow-ups that further improve compliance for the
decoder and encoder, by fixing support for commands on both. Patch 11
also makes sure that supported H.264 profiles are exported on MT8173.

Changes since v3:
* Stop checking that controls are set for every request.
* Add V4L2_CID_STATELESS_H264_START_CODE control.
* Stop mapping OUTPUT buffers and getting the NAL type from them, use the
  nal_ref_idc field instead.
* Make V4L2_CID_MIN_BUFFERS_FOR_CAPTURE control stateful-only.
* Set vb2_buffer's field to V4L2_FIELD_NONE in buffer validation hook.

Changes since v2:
* Add follow-up patches fixing support for START/STOP commands for the
  encoder, and stateful decoder.

Alexandre Courbot (8):
  media: mtk-vcodec: vdec: handle firmware version field
  media: mtk-vcodec: support version 2 of decoder firmware ABI
  media: add Mediatek's MM21 format
  dt-bindings: media: document mediatek,mt8183-vcodec-dec
  media: mtk-vcodec: vdec: use helpers in VIDIOC_(TRY_)DECODER_CMD
  media: mtk-vcodec: vdec: clamp OUTPUT resolution to hardware limits
  media: mtk-vcodec: make flush buffer reusable by encoder
  media: mtk-vcodec: venc: support START and STOP commands

Hirokazu Honda (1):
  media: mtk-vcodec: vdec: Support H264 profile control

Hsin-Yi Wang (1):
  media: mtk-vcodec: venc: make sure buffer exists in list before
    removing

Yunfei Dong (5):
  media: mtk-vcodec: vdec: move stateful ops into their own file
  media: mtk-vcodec: vdec: support stateless API
  media: mtk-vcodec: vdec: support stateless H.264 decoding
  media: mtk-vcodec: vdec: add media device if using stateless api
  media: mtk-vcodec: enable MT8183 decoder

 .../bindings/media/mediatek-vcodec.txt        |   1 +
 .../media/v4l/pixfmt-reserved.rst             |   7 +
 drivers/media/platform/Kconfig                |   2 +
 drivers/media/platform/mtk-vcodec/Makefile    |   3 +
 .../platform/mtk-vcodec/mtk_vcodec_dec.c      | 818 +++---------------
 .../platform/mtk-vcodec/mtk_vcodec_dec.h      |  28 +-
 .../platform/mtk-vcodec/mtk_vcodec_dec_drv.c  |  66 +-
 .../mtk-vcodec/mtk_vcodec_dec_stateful.c      | 667 ++++++++++++++
 .../mtk-vcodec/mtk_vcodec_dec_stateless.c     | 370 ++++++++
 .../platform/mtk-vcodec/mtk_vcodec_drv.h      |  58 +-
 .../platform/mtk-vcodec/mtk_vcodec_enc.c      | 135 ++-
 .../platform/mtk-vcodec/mtk_vcodec_enc_drv.c  |   4 +
 .../mtk-vcodec/vdec/vdec_h264_req_if.c        | 780 +++++++++++++++++
 .../media/platform/mtk-vcodec/vdec_drv_if.c   |   3 +
 .../media/platform/mtk-vcodec/vdec_drv_if.h   |   1 +
 .../media/platform/mtk-vcodec/vdec_ipi_msg.h  |  23 +-
 .../media/platform/mtk-vcodec/vdec_vpu_if.c   |  43 +-
 .../media/platform/mtk-vcodec/vdec_vpu_if.h   |   5 +
 drivers/media/v4l2-core/v4l2-ioctl.c          |   1 +
 include/uapi/linux/videodev2.h                |   1 +
 20 files changed, 2293 insertions(+), 723 deletions(-)
 create mode 100644 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateful.c
 create mode 100644 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_stateless.c
 create mode 100644 drivers/media/platform/mtk-vcodec/vdec/vdec_h264_req_if.c

--
2.31.1.498.g6c1eba8ee3d-goog