[PATCH 00/14] staging: vc04_services: bcm2835-isp support

Umang Jain
2022-11-21T21:48:30Z

This series aims to upport bcm2835-isp from the RPi kernel [1] and is a
independent subset of earlier series [2] posted to upport CSI-2/CCP2
receiver IP core("Unicam) + the ISP driver found in BCM283x and compatible
SoCs (namely BCM2711). Unicam is still under active development to work
with multistream support to get into mainline. Hence only the ISP driver
will remain the primary area of this series.

Patch (01-02)/14 adds a new driver named vc-sm-cma to handle memory sharing
with the VC4 VPU.

Patch 03/14 adds a small extension to videobuf2 to allow exporting as a
dma_buf instead of a file-descriptor.

Patch (04-05)/14 adds a couple of improvements/support for
bcm2835-isp(event callback and zero-copy) to vchiq-mmal.

Patch (06-09)/14 adds the core bcm2835-isp driver along with headers
and format defintions.

Patch (10-11)/14 deals with the colorspace support.
Note: This is still WIP since the implementation of colorspace is still
getting ironed out (especially around setting of colorspace flags handling).

Patch 12/14 allows multiple instances of the ISP.

Patch 13/14 adds a admin-guide document on bcm2835-isp.

Patch 14/14 wires all this up with the vchiq-mmal driver.

Testing:
Tested with RPi Model 4B running linux mainline v6.1-rc6. To test
end-to-end, I choose to cherry-pick the Unicam patches and OV5647 DT
bindings from [1]). Once done, functional testing was conducted with
libcamera[3] and its utility tools.

Also note: Reviews given on [2] for the relevant ISP driver patches have
been incorporated in this version.

Known issues:
- Colorspace handling
- vc-sm-cma spamming kernel log with
- pr_err("%s: Expecting an uncached alias for dma_addr %pad\n"

[1]: https://github.com/raspberrypi/linux
[2]: https://lore.kernel.org/linux-media/20200504092611.9798-1-laurent.pinchart@ideasonboard.com/
[3]: https://libcamera.org/getting-started.html

Dave Stevenson (7):
staging: vc04_services: Add new vc-sm-cma driver
staging: vchiq_arm: Register vcsm-cma as a platform driver
media: videobuf2: Allow exporting of a struct dmabuf
staging: mmal-vchiq: Add support for event callbacks
staging: mmal-vchiq: Use vc-sm-cma to support zero copy
staging: mmal_vchiq: Add image formats to be used by bcm2835-isp
uapi: bcm2835-isp: Add bcm2835-isp uapi header file

David Plowman (2):
vc04_services: bcm2835-isp: Allow formats with different colour spaces
vc04_services: bcm2835-isp: Permit all sRGB colour spaces on ISP
outputs

Naushir Patuck (5):
media: uapi: v4l2-core: Add ISP statistics output V4L2 fourcc type
staging: vc04_services: bcm2835-isp: Add a more complex ISP processing
component
staging: vc04_services: bcm2835_isp: Allow multiple users
docs: admin-guide: media: bcm2835-isp: Add documentation for
bcm2835-isp
staging: vc04_services: vchiq: Load bcm2835_isp driver from vchiq

.../admin-guide/media/bcm2835-isp.rst | 127 ++
.../userspace-api/media/drivers/index.rst | 1 +
.../userspace-api/media/v4l/meta-formats.rst | 1 +
.../v4l/pixfmt-meta-bcm2835-isp-stats.rst | 41 +
MAINTAINERS | 9 +
.../media/common/videobuf2/videobuf2-core.c | 36 +-
drivers/media/v4l2-core/v4l2-ioctl.c | 1 +
drivers/staging/vc04_services/Kconfig | 4 +
drivers/staging/vc04_services/Makefile | 2 +
.../staging/vc04_services/bcm2835-isp/Kconfig | 14 +
.../vc04_services/bcm2835-isp/Makefile | 8 +
.../bcm2835-isp/bcm2835-isp-ctrls.h | 72 +
.../bcm2835-isp/bcm2835-isp-fmts.h | 558 +++++
.../bcm2835-isp/bcm2835-v4l2-isp.c | 1817 +++++++++++++++++
.../interface/vchiq_arm/vchiq_arm.c | 6 +
.../staging/vc04_services/vc-sm-cma/Kconfig | 10 +
.../staging/vc04_services/vc-sm-cma/Makefile | 12 +
.../staging/vc04_services/vc-sm-cma/vc_sm.c | 801 ++++++++
.../staging/vc04_services/vc-sm-cma/vc_sm.h | 54 +
.../vc04_services/vc-sm-cma/vc_sm_cma_vchi.c | 507 +++++
.../vc04_services/vc-sm-cma/vc_sm_cma_vchi.h | 63 +
.../vc04_services/vc-sm-cma/vc_sm_defs.h | 187 ++
.../vc04_services/vc-sm-cma/vc_sm_knl.h | 28 +
.../staging/vc04_services/vchiq-mmal/Kconfig | 1 +
.../vc04_services/vchiq-mmal/mmal-common.h | 5 +
.../vc04_services/vchiq-mmal/mmal-encodings.h | 66 +
.../vc04_services/vchiq-mmal/mmal-msg.h | 35 +
.../vchiq-mmal/mmal-parameters.h | 165 +-
.../vc04_services/vchiq-mmal/mmal-vchiq.c | 253 ++-
.../vc04_services/vchiq-mmal/mmal-vchiq.h | 5 +
include/media/videobuf2-core.h | 15 +
include/uapi/linux/bcm2835-isp.h | 347 ++++
include/uapi/linux/v4l2-controls.h | 6 +
include/uapi/linux/videodev2.h | 1 +
34 files changed, 5225 insertions(+), 33 deletions(-)
create mode 100644 Documentation/admin-guide/media/bcm2835-isp.rst
create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-meta-bcm2835-isp-stats.rst
create mode 100644 drivers/staging/vc04_services/bcm2835-isp/Kconfig
create mode 100644 drivers/staging/vc04_services/bcm2835-isp/Makefile
create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-ctrls.h
create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-isp-fmts.h
create mode 100644 drivers/staging/vc04_services/bcm2835-isp/bcm2835-v4l2-isp.c
create mode 100644 drivers/staging/vc04_services/vc-sm-cma/Kconfig
create mode 100644 drivers/staging/vc04_services/vc-sm-cma/Makefile
create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm.c
create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm.h
create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c
create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.h
create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm_defs.h
create mode 100644 drivers/staging/vc04_services/vc-sm-cma/vc_sm_knl.h
create mode 100644 include/uapi/linux/bcm2835-isp.h

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2.37.3