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Message-ID: <20231115195947.GD29486@pendragon.ideasonboard.com>
Date: Wed, 15 Nov 2023 21:59:47 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Umang Jain <umang.jain@...asonboard.com>
Cc: linux-media@...r.kernel.org, kernel-list@...pberrypi.com,
linux-kernel@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org,
linux-staging@...ts.linux.dev,
Dave Stevenson <dave.stevenson@...pberrypi.com>,
Kieran Bingham <kieran.bingham@...asonboard.com>,
"Ricardo B . Marliere" <ricardo@...liere.net>,
Dan Carpenter <error27@...il.com>,
Stefan Wahren <stefan.wahren@...e.com>
Subject: Re: [PATCH v2 00/15] staging: vc04_services: bcm2835-isp support
Hello,
On Thu, Nov 09, 2023 at 04:02:52PM -0500, Umang Jain wrote:
> This series aims to upport bcm2835-isp from the RPi kernel.
> It is developed on top of staging-next which comprises many
> VC04 changes for it's de-staging. Hence, the merge of this
> driver is targeted when VC04 is de-staged completely (which I
> have been pushing), but it can be helped getting reviewed meanwhile.
> Hence, the reason for posting the series.
Related question, what do people think about dropping the legacy
firmware-based bcm2385-camera driver once this gets merged ?
firmware-based camera operation is deprecated by Raspberry Pi, and
doesn't work on the Pi 5.
> Patch (01-02)/15 adds a new driver named vc-sm-cma to handle memory sharing
> with the VC4 VPU.
>
> Patch 03/15 adds a small extension to videobuf2 to allow exporting as a
> dma_buf instead of a file-descriptor.
>
> Patch (04-05)/15 adds a couple of improvements/support for
> bcm2835-isp(event callback and zero-copy) to vchiq-mmal.
>
> Patch (06-10)/15 adds the core bcm2835-isp driver along with headers
> and format defintions. 09/15 is a standalone patch which can be merged
> independently I believe.
>
> Patch (11-12)/15 deals with the colorspace support.
>
> Patch 13/15 allows multiple instances of the ISP.
>
> Patch 14/15 adds a admin-guide document on bcm2835-isp.
>
> Patch 15/15 deals with driver registeration.
>
> Dave Stevenson (6):
> staging: vc04_services: Add new vc-sm-cma 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 (4):
> 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
>
> Umang Jain (3):
> staging: vc04_services: vchiq_arm: Register vcsm-cma driver
> staging: vc04_services: Add helpers for vchiq driver data
> staging: vc04_services: vchiq: Register bcm2835-isp
>
> .../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 | 32 +
> 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 | 3 +-
> .../staging/vc04_services/bcm2835-isp/Kconfig | 14 +
> .../vc04_services/bcm2835-isp/Makefile | 4 +
> .../bcm2835-isp/bcm2835-isp-ctrls.h | 72 +
> .../bcm2835-isp/bcm2835-isp-fmts.h | 559 +++++
> .../bcm2835-isp/bcm2835-v4l2-isp.c | 1822 +++++++++++++++++
> .../interface/vchiq_arm/vchiq_arm.c | 6 +
> .../interface/vchiq_arm/vchiq_bus.h | 10 +
> .../staging/vc04_services/vc-sm-cma/Kconfig | 10 +
> .../staging/vc04_services/vc-sm-cma/Makefile | 4 +
> .../staging/vc04_services/vc-sm-cma/vc_sm.c | 817 ++++++++
> .../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 | 5 +
> include/uapi/linux/videodev2.h | 1 +
> 35 files changed, 5235 insertions(+), 34 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
--
Regards,
Laurent Pinchart
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