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Date: Wed, 21 Feb 2024 16:02:06 +0000
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Message-ID: <20240221160215.484151-1-panikiel@google.com>
Subject: [PATCH v2 0/9] Add Chameleon v3 video support
From: "=?UTF-8?q?Pawe=C5=82=20Anikiel?=" <panikiel@google.com>
To: airlied@gmail.com, akpm@linux-foundation.org, conor+dt@kernel.org, 
	daniel@ffwll.ch, dinguyen@kernel.org, hverkuil-cisco@xs4all.nl, 
	krzysztof.kozlowski+dt@linaro.org, maarten.lankhorst@linux.intel.com, 
	mchehab@kernel.org, mripard@kernel.org, robh+dt@kernel.org, 
	tzimmermann@suse.de
Cc: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, 
	linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, 
	chromeos-krk-upstreaming@google.com, ribalda@chromium.org, 
	"=?UTF-8?q?Pawe=C5=82=20Anikiel?=" <panikiel@google.com>
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Google Chameleon v3 is a testing device capable of emulating multiple
DisplayPort monitors, used for testing purposes.  It is based on an Arria
10 SoCFPGA.  This patchset adds V4L2 drivers for two IP blocks used in
the device's FPGA: the Chameleon v3 framebuffer, and the Intel DisplayPort
RX IP.  The former is a video capture device that takes video signal and
writes frames into memory, which can be later processed by userspace.
The latter is a DisplayPort receiver IP from Intel, its datasheet can
be found at:
https://www.intel.com/programmable/technical-pdfs/683273.pdf

The framebuffer driver is a regular v4l2 capture device driver, while
the DP RX driver is a v4l2 subdevice driver. In order to avoid code
duplication, some parts of the DisplayPort code from the DRM subsystem
were put into headers usable by the DP RX driver. Apart from that, the
patchset adds a new callback to the internal v4l2 subdevice API to allow
querying the dv timings of individual video streams of the DP receiver.

v2 changes:
  - Add missing includes in dt binding examples
  - Add version number to intel,dprx compatible
  - Use generic node names in dts
  - Add and document IP configuration parameters
  - Remove IRQ registers from intel-dprx (they're not a part of the IP)
  - Remove no-endpoint property and check for "port" node instead

Pawe=C5=82 Anikiel (9):
  media: v4l2-subdev: Add a pad variant of .query_dv_timings()
  media: Add Chameleon v3 framebuffer driver
  drm/dp_mst: Move DRM-independent structures to separate header
  lib: Move DisplayPort CRC functions to common lib
  drm/display: Add mask definitions for DP_PAYLOAD_ALLOCATE_* registers
  media: intel: Add Displayport RX IP driver
  media: dt-bindings: Add Chameleon v3 framebuffer
  media: dt-bindings: Add Intel Displayport RX IP
  ARM: dts: chameleonv3: Add video device nodes

 .../bindings/media/google,chv3-fb.yaml        |   67 +
 .../devicetree/bindings/media/intel,dprx.yaml |  160 ++
 .../socfpga/socfpga_arria10_chameleonv3.dts   |  152 ++
 drivers/gpu/drm/display/Kconfig               |    1 +
 drivers/gpu/drm/display/drm_dp_mst_topology.c |   76 +-
 drivers/media/platform/Kconfig                |    1 +
 drivers/media/platform/Makefile               |    1 +
 drivers/media/platform/google/Kconfig         |    3 +
 drivers/media/platform/google/Makefile        |    2 +
 .../media/platform/google/chameleonv3/Kconfig |   13 +
 .../platform/google/chameleonv3/Makefile      |    3 +
 .../platform/google/chameleonv3/chv3-fb.c     |  895 +++++++
 drivers/media/platform/intel/Kconfig          |   12 +
 drivers/media/platform/intel/Makefile         |    1 +
 drivers/media/platform/intel/intel-dprx.c     | 2176 +++++++++++++++++
 drivers/media/v4l2-core/v4l2-subdev.c         |   11 +
 include/drm/display/drm_dp.h                  |    9 +-
 include/drm/display/drm_dp_mst.h              |  238 ++
 include/drm/display/drm_dp_mst_helper.h       |  232 +-
 include/linux/crc-dp.h                        |   10 +
 include/media/v4l2-subdev.h                   |    5 +
 lib/Kconfig                                   |    8 +
 lib/Makefile                                  |    1 +
 lib/crc-dp.c                                  |   78 +
 24 files changed, 3851 insertions(+), 304 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/google,chv3-fb.=
yaml
 create mode 100644 Documentation/devicetree/bindings/media/intel,dprx.yaml
 create mode 100644 drivers/media/platform/google/Kconfig
 create mode 100644 drivers/media/platform/google/Makefile
 create mode 100644 drivers/media/platform/google/chameleonv3/Kconfig
 create mode 100644 drivers/media/platform/google/chameleonv3/Makefile
 create mode 100644 drivers/media/platform/google/chameleonv3/chv3-fb.c
 create mode 100644 drivers/media/platform/intel/intel-dprx.c
 create mode 100644 include/drm/display/drm_dp_mst.h
 create mode 100644 include/linux/crc-dp.h
 create mode 100644 lib/crc-dp.c

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2.44.0.rc0.258.g7320e95886-goog