[PATCH v8 0/6] Add support for MT8196 video encoder

[Irui Wang]

This series adds support for the MT8196 video encoder.

Patch 1 adds the device-tree binding changes.
Patch 2 adds the new encoder platform data.
Patches 3 through 5 add a new encoder driver interface for VCP firmware.
Patch 6 adds the MT8196 compatible data.

The v4l2-compliance result for the encoder is:

  Total for mtk-vcodec-enc device /dev/video3: 47, Succeeded: 46,
  Failed: 1, Warnings: 0

The one failed test is not caused by this series:

  fail: v4l2-test-controls.cpp(1171):
        node->codec_mask & STATEFUL_ENCODER
  test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: FAIL

This series depends on the MT8196 video decoder v6 series [1]. The decoder
series retains the "Add MediaTek VCP remoteproc driver support" v4
prerequisite [2].

[1] https://patchwork.linuxtv.org/project/linux-media/list/?series=28000
[2] https://patchwork.kernel.org/series/1086068/

Changes in v8:
 - Rebase the encoder series on the MT8196 decoder v6 series.
 - Adapt patch 2 to the decoder v6 firmware-selection flow, retaining its
   generic selector and validation while supplying the encoder platform
   firmware initialization callback.
 - Adapt patch 5 to the decoder v6 VCP teardown flow, retaining the complete
   teardown before adding the encoder firmware-device callback.
 - Link to v7:
   https://patchwork.linuxtv.org/project/linux-media/list/?series=26089

Changes in v7:
 - Patch 2: Add new pdata members to remove device-tree parsing branches.
 - Rebase the series on the decoder patch set.
 - Link to v6:
   https://patchwork.linuxtv.org/project/linux-media/cover/20260423073345.27402-1-irui.wang@mediatek.com/

Changes in v6:
 - Move the device-tree binding changes to patch 1.
 - Rebase the series on the decoder patch set.
 - Link to v5:
   https://patchwork.linuxtv.org/project/linux-media/cover/20260302035244.8994-1-irui.wang@mediatek.com/

Changes in v5:
 - Rewrite the patch 5 commit subject.
 - Add the else branch in patch 5.
 - Link to v4:
   https://patchwork.linuxtv.org/project/linux-media/list/?series=21757

Changes in v4:
 - Rework the patch 3 commit message.
 - Rework patch 5 with more details.
 - Rebase the series on the decoder patch set.
 - Link to v3:
   https://patchwork.linuxtv.org/project/linux-media/cover/20250814085642.17343-1-kyrie.wu@mediatek.com/

Changes in v3:
 - Add encoder rate-control buffer allocation failure handling.
 - Add the mediatek,vcp property definition to the device-tree binding.

Changes in v2:
 - Add support for the VCP encode process.
 - Add the MT8196 encoder platform data.
 - Rebase the encoder series on the decoder patch set.
 - Address review comments from v1.

Irui Wang (6):
  media: dt-bindings: mediatek,vcodec-encoder: Add MT8196
  media: mediatek: encoder: Add new platform data members
  media: mediatek: encoder: Add a new encoder driver interface
  media: mediatek: encoder: Add support for common firmware interface
  media: mediatek: encoder: Add support for VCP encode process
  media: mediatek: encoder: Add MT8196 encoder compatible data

 .../media/mediatek,vcodec-encoder.yaml        |  22 +
 .../mediatek/vcodec/common/mtk_vcodec_fw.c    |   6 +
 .../mediatek/vcodec/common/mtk_vcodec_fw.h    |   1 +
 .../vcodec/common/mtk_vcodec_fw_priv.h        |   1 +
 .../vcodec/common/mtk_vcodec_fw_vcp.c         |   6 +
 .../platform/mediatek/vcodec/encoder/Makefile |   1 +
 .../mediatek/vcodec/encoder/mtk_vcodec_enc.c  |  24 +-
 .../vcodec/encoder/mtk_vcodec_enc_drv.c       |  63 +-
 .../vcodec/encoder/mtk_vcodec_enc_drv.h       |  15 +-
 .../vcodec/encoder/venc/venc_common_if.c      | 684 ++++++++++++++++++
 .../mediatek/vcodec/encoder/venc_drv_if.c     |   3 +-
 .../mediatek/vcodec/encoder/venc_drv_if.h     |   3 +
 .../mediatek/vcodec/encoder/venc_ipi_msg.h    |  26 +
 .../mediatek/vcodec/encoder/venc_vpu_if.c     |  47 +-
 14 files changed, 850 insertions(+), 52 deletions(-)
 create mode 100644 drivers/media/platform/mediatek/vcodec/encoder/venc/venc_common_if.c


base-commit: bf115aeef8fc70bc46b05733d0d3b77bd9e8af50
-- 
2.55.0.windows.3