linux-kernel - [PATCH v2 0/8] Additional features for Hantro HEVC

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Date:   Thu, 10 Jun 2021 17:44:34 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     hverkuil@...all.nl, ezequiel@...labora.com, p.zabel@...gutronix.de,
        mchehab@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        festevam@...il.com, gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...l.net, emil.l.velikov@...il.com,
        andrzej.p@...labora.com, jc@...esim.co.uk, jernej.skrabec@...il.com
Cc:     kernel@...gutronix.de, linux-imx@....com,
        linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v2 0/8] Additional features for Hantro HEVC

version 2:
 - Fix structure name in ext-ctrls-codec.rst
 - Define the value for compression storage size
 - Add comments about registers usage
 - Add documentation about P010 padding

Basic HEVC support has been added to Hantro driver in this pull request:
https://www.spinics.net/lists/linux-media/msg193744.html

Thanks to that it is now possible to support more features for this driver.

The first patch allow to log the hardware performance per macroblock.
The second patch makes the driver use compressed reference frames to
reduce memory bandwidth consumption.
Patches 3 to 5 allow to decode and produce 10-bits P010 frames.
Patch 6 make usage of G2 post processor to scale down the frames.
Patches 7 and 8 add the support of HEVC scaling matrix by adding a new
control.

All these patches enhance the HEVC support for Hantro (G2) hardware.
Unluckily they almost all touch the same pieces of code, where buffer
size, offset and addresses are set, so they have to be in this order.
They depend of the series pushed in this pull request:
https://www.spinics.net/lists/linux-media/msg193744.html

Benjamin

Benjamin Gaignard (8):
  media: hantro: Trace hevc hw cycles performance register
  media: hantro: Add support of compressed reference buffers
  media: hantro: hevc: Allow 10-bits encoded streams
  media: Add P010 video format
  media: hantro: hevc: Allow to produce 10-bit frames
  media: hantro: enumerate scaled output formats
  media: hevc: Add scaling matrix control
  media: hantro: Add scaling lists feature

 .../media/v4l/ext-ctrls-codec.rst             |  45 +++++
 .../media/v4l/pixfmt-yuv-planar.rst           |  78 +++++++-
 .../media/v4l/vidioc-queryctrl.rst            |   6 +
 drivers/media/v4l2-core/v4l2-common.c         |   1 +
 drivers/media/v4l2-core/v4l2-ctrls-core.c     |   6 +
 drivers/media/v4l2-core/v4l2-ctrls-defs.c     |   4 +
 drivers/media/v4l2-core/v4l2-ioctl.c          |   1 +
 drivers/staging/media/hantro/hantro.h         |   4 +
 drivers/staging/media/hantro/hantro_drv.c     |  32 ++-
 .../staging/media/hantro/hantro_g2_hevc_dec.c | 186 ++++++++++++++++--
 drivers/staging/media/hantro/hantro_g2_regs.h |  12 ++
 drivers/staging/media/hantro/hantro_hevc.c    |  67 ++++++-
 drivers/staging/media/hantro/hantro_hw.h      |   7 +
 drivers/staging/media/hantro/hantro_v4l2.c    |  10 +-
 drivers/staging/media/hantro/imx8m_vpu_hw.c   |   6 +
 drivers/staging/media/hantro/trace.h          |  40 ++++
 include/media/hevc-ctrls.h                    |  11 ++
 include/uapi/linux/videodev2.h                |   1 +
 18 files changed, 493 insertions(+), 24 deletions(-)
 create mode 100644 drivers/staging/media/hantro/trace.h

-- 
2.25.1