[PATCH v2, 00/10] Enable two H264 encoder cores on MT8195

[Irui Wang]

MT8195 has two H264 encoder cores, they have their own power-domains,
clocks, interrupts, register base. The two H264 encoder cores can work
together to achieve higher performance, it's a core mode called
frame-racing, one core has 4K at 30fps performance, two cores can achieve
4K at 60fps.
The two encoder core encoding process looks like this:

    VENC Core0: frm#0....frm#2....frm#4....
    VENC Core1: ..frm#1....frm#3....frm#5....

This series of patches are used to enable the two H264 encoder cores,
encoding process will be changed:
As-Is: Synchronous
V4L2_VIDIOC_QBUF#0 --> device_run(triger encoder) --> wait encoder IRQ -->
encoding done with result --> job_finish
V4l2_VIDIOC_QBUF#1 --> device_run(triger encoder) --> wait encoder IRQ -->
encoding done with result --> job_finish
...

To-Be: Asynchronous
V4L2_VIDIOC_QBUF#0 --> device_run(triger encoder) --> job_finish
..V4l2_VIDIOC_QBUF#1 --> device_run(triger encoder) --> job_finish
(venc core0 may encode done here, done the encoding result to client)
V4L2_VIDIOC_QBUF#2 --> device_run(triger encoder) --> job_finish.

There is no "wait encoder IRQ" synchronous call during frame-racing mode
encoding process, it can full use the two encoder cores to achieve higher
performance.

---
This series patches dependent on:
[1]: the latest linux stage tree: https://git.linuxtv.org/media_stage.git

mtk decoder patches
[2]: https://patchwork.linuxtv.org/project/linux-media/list/?series=7105
[3]: https://patchwork.linuxtv.org/project/linux-media/list/?series=7131

new yaml included files
[4]:
https://patchwork.kernel.org/project/linux-mediatek/list/?series=551641
[5]:
https://patchwork.kernel.org/project/linux-mediatek/list/?series=580579

---
---
changes compared with v1:
- of_platform_populate was used in place of the component framework.
- new yaml file for venc cores.
- some modifications for patch v1's review comments.
---

Irui Wang (10):
  media: mtk-vcodec: Use core type to indicate h264 and vp8 enc
  media: mtk-vcodec: export encoder functions
  dt-bindings: media: mtk-vcodec: Adds encoder cores dt-bindings for
    mt8195
  media: mtk-vcodec: Enable venc dual core usage
  media: mtk-vcodec: mtk-vcodec: Rewrite venc power manage interface
  media: mtk-vcodec: Add venc power on/off interface
  media: mtk-vcodec: Rewrite venc clock interface
  media: mtk-vcodec: Add more extra processing for dual-core mode
  media: mtk-vcodec: Add dual core mode encode process
  media: mtk-vcodec: Done encode result to client

 .../media/mediatek,vcodec-encoder-core.yaml   | 214 +++++++++++++++++
 drivers/media/platform/mtk-vcodec/Makefile    |   4 +-
 .../platform/mtk-vcodec/mtk_vcodec_drv.h      |  44 +++-
 .../platform/mtk-vcodec/mtk_vcodec_enc.c      | 109 ++++++---
 .../platform/mtk-vcodec/mtk_vcodec_enc.h      |   7 +-
 .../platform/mtk-vcodec/mtk_vcodec_enc_core.c | 187 +++++++++++++++
 .../platform/mtk-vcodec/mtk_vcodec_enc_core.h |  36 +++
 .../platform/mtk-vcodec/mtk_vcodec_enc_drv.c  | 118 ++++++----
 .../platform/mtk-vcodec/mtk_vcodec_enc_pm.c   | 187 +++++++++++++--
 .../platform/mtk-vcodec/mtk_vcodec_enc_pm.h   |  11 +-
 .../platform/mtk-vcodec/mtk_vcodec_util.c     |  19 ++
 .../platform/mtk-vcodec/mtk_vcodec_util.h     |   5 +
 .../platform/mtk-vcodec/venc/venc_h264_if.c   | 216 +++++++++++++++---
 .../platform/mtk-vcodec/venc/venc_vp8_if.c    |   3 +-
 .../media/platform/mtk-vcodec/venc_drv_if.c   |  79 +++++--
 .../media/platform/mtk-vcodec/venc_drv_if.h   |   7 +
 .../media/platform/mtk-vcodec/venc_vpu_if.c   |  10 +-
 .../media/platform/mtk-vcodec/venc_vpu_if.h   |   3 +-
 18 files changed, 1097 insertions(+), 162 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/mediatek,vcodec-encoder-core.yaml
 create mode 100644 drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_core.c
 create mode 100644 drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_core.h

-- 
2.18.0