[PATCH v2,00/21] add driver to support secure video decoder

[Yunfei Dong]

This patch series is consists of four parts. The first is from Jeffrey,
adding secure memory flag in v4l2 framework to support request secure
buffer.

The second and third parts are from John and T.J, adding some heap
interfaces, then our kernel users could allocate buffer from special
heap. The patch v1 is inside below dmabuf link.
https://lore.kernel.org/linux-mediatek/20230911023038.30649-1-yong.wu@xxxxxxxxxxxx/
To avoid confusing, move them into vcodec patchset since we use the
new interfaces directly.

The fourth part is mediatek decoder driver, adding tee interface to
support secure video decoder(svp).

Patch 1~4   add secure memory flag in v4l2 framework with Jeffrey's patch.
Patch 5~7   support allocate dmabufs from specific with John and T.J's patch.
Patch 8~11  initialize tee related interface and parameters.
Patch 12    allocate/free secure memory.
Patch 13    map vsi for secure mode.
Patch 14~16 support one plane capture buffer.
Patch 17~18 re-construct h264 driver to support secure mode.
Patch 19    disable interrupt.
Patch 20    support tee decode.
Patch 21    move init decoder interface to setup queue.
---
Changed in v2:
- remove setting decoder mode and getting secure handle from decode
- add Jeffrey's patch
- add John and T.J's patch
- getting secure flag with request buffer
- fix some comments from patch v1
---
Jeffrey Kardatzke (4):
  v4l2: add secure memory flags
  v4l2: handle secure memory flags in queue setup
  v4l2: verify secure dmabufs are used in secure queue
  v4l: add documentation for secure memory flag

John Stultz (2):
  dma-heap: Add proper kref handling on dma-buf heaps
  dma-heap: Provide accessors so that in-kernel drivers can allocate
    dmabufs from specific heaps

T.J. Mercier (1):
  dma-buf: heaps: Deduplicate docs and adopt common format

Yunfei Dong (14):
  media: mediatek: vcodec: add tee client interface to communiate with
    optee-os
  media: mediatek: vcodec: allocate tee share memory
  media: mediatek: vcodec: send share memory data to optee
  media: mediatek: vcodec: initialize msg and vsi information
  media: mediatek: vcodec: add interface to allocate/free secure memory
  media: mediatek: vcodec: using shared memory as vsi address
  media: mediatek: vcodec: Add capture format to support one plane
    memory
  media: mediatek: vcodec: Add one plane format
  media: medkatek: vcodec: support one plane capture buffer
  media: medkatek: vcodec: re-construct h264 driver to support svp mode
  media: medkatek: vcodec: remove parse nal_info in kernel
  media: medkatek: vcodec: disable wait interrupt for svp mode
  media: medkatek: vcodec: support tee decoder
  media: mediatek: vcodec: move vdec init interface to setup callback

 .../userspace-api/media/v4l/buffer.rst        |   8 +-
 .../media/v4l/pixfmt-reserved.rst             |   8 +
 drivers/dma-buf/dma-heap.c                    | 139 +++++--
 .../media/common/videobuf2/videobuf2-core.c   |  25 ++
 .../common/videobuf2/videobuf2-dma-contig.c   |   6 +
 .../media/common/videobuf2/videobuf2-dma-sg.c |   6 +
 .../media/common/videobuf2/videobuf2-v4l2.c   |  33 +-
 .../media/platform/mediatek/vcodec/Kconfig    |   1 +
 .../mediatek/vcodec/common/mtk_vcodec_util.c  | 121 +++++-
 .../mediatek/vcodec/common/mtk_vcodec_util.h  |   3 +
 .../platform/mediatek/vcodec/decoder/Makefile |   1 +
 .../mediatek/vcodec/decoder/mtk_vcodec_dec.c  | 155 ++++---
 .../vcodec/decoder/mtk_vcodec_dec_drv.c       |   8 +
 .../vcodec/decoder/mtk_vcodec_dec_drv.h       |   7 +
 .../vcodec/decoder/mtk_vcodec_dec_hw.c        |  34 +-
 .../vcodec/decoder/mtk_vcodec_dec_optee.c     | 383 ++++++++++++++++++
 .../vcodec/decoder/mtk_vcodec_dec_optee.h     | 156 +++++++
 .../vcodec/decoder/mtk_vcodec_dec_stateless.c |  35 +-
 .../decoder/vdec/vdec_h264_req_common.c       |  11 +-
 .../decoder/vdec/vdec_h264_req_multi_if.c     | 334 +++++++++------
 .../mediatek/vcodec/decoder/vdec_drv_if.c     |   4 +-
 .../mediatek/vcodec/decoder/vdec_msg_queue.c  |   9 +-
 .../mediatek/vcodec/decoder/vdec_vpu_if.c     |  57 ++-
 .../mediatek/vcodec/decoder/vdec_vpu_if.h     |   4 +
 drivers/media/v4l2-core/v4l2-common.c         |   2 +
 drivers/media/v4l2-core/v4l2-ioctl.c          |   1 +
 include/linux/dma-heap.h                      |  29 +-
 include/media/videobuf2-core.h                |   8 +-
 include/uapi/linux/videodev2.h                |   3 +
 29 files changed, 1292 insertions(+), 299 deletions(-)
 create mode 100644 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.c
 create mode 100644 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_optee.h

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2.18.0