mbox series

[v2,00/15] staging: vc04_services: bcm2835-isp support

Message ID 20231109210309.638594-1-umang.jain@ideasonboard.com
Headers show
Series staging: vc04_services: bcm2835-isp support | expand

Message

Umang Jain Nov. 9, 2023, 9:02 p.m. UTC
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.

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

Comments

Stefan Wahren Nov. 10, 2023, 10:32 a.m. UTC | #1
Hi Umang,

Am 09.11.23 um 22:02 schrieb Umang Jain:
> 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.
>
> 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.

since this is V2, i couldn't find a changelog? The first one was one
year ago, so it's very hard to remember. In such a case a link to the
last version is also helpful.

Recently i saw you have a Github account. For such a complex series it's
also very helpful to provide a link to a working test branch with this
series applied. It's not a must, but appreciated.

Best regards

>
> 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
>
Laurent Pinchart Nov. 15, 2023, 7:59 p.m. UTC | #2
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
Stefan Wahren Nov. 15, 2023, 8:57 p.m. UTC | #3
Hi Laurent,

[add Ivan & Peter]

Am 15.11.23 um 20:59 schrieb Laurent Pinchart:
> 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
i don't remember exactly, but wasn't the bcm2835-camera required for Pi
Camera V1.3?

At the end cannot speak for the users. AFAIK OpenSuSE and Fedora use the
driver.
Laurent Pinchart Nov. 16, 2023, 12:50 a.m. UTC | #4
On Wed, Nov 15, 2023 at 09:57:52PM +0100, Stefan Wahren wrote:
> Hi Laurent,
> 
> [add Ivan & Peter]
> 
> Am 15.11.23 um 20:59 schrieb Laurent Pinchart:
> > 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
>
> i don't remember exactly, but wasn't the bcm2835-camera required for Pi
> Camera V1.3?

If I'm not mistaken (Dave can correct me), the legacy camera stack works
only with the Raspberry Pi official camera v1, v2 and HQ modules.
Raspberry Pi has switched to a new camera stack based on libcamera,
which works on the Pi Zero 2, Pi 3, Pi 4 and Pi 5. This new stack
supports the same camera modules as the legacy stack, and many more. The
legacy stack doesn't work on Pi 5 at all.

> At the end cannot speak for the users. AFAIK OpenSuSE and Fedora use the
> driver.
Ivan T. Ivanov Nov. 16, 2023, 10:54 a.m. UTC | #5
Hi,

On 2023-11-16 02:50, Laurent Pinchart wrote:
> On Wed, Nov 15, 2023 at 09:57:52PM +0100, Stefan Wahren wrote:
>> Hi Laurent,
>> 
>> [add Ivan & Peter]
>> 
>> Am 15.11.23 um 20:59 schrieb Laurent Pinchart:
>> > 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
>> 
>> i don't remember exactly, but wasn't the bcm2835-camera required for 
>> Pi
>> Camera V1.3?
> 
> If I'm not mistaken (Dave can correct me), the legacy camera stack 
> works
> only with the Raspberry Pi official camera v1, v2 and HQ modules.
> Raspberry Pi has switched to a new camera stack based on libcamera,
> which works on the Pi Zero 2, Pi 3, Pi 4 and Pi 5. This new stack
> supports the same camera modules as the legacy stack, and many more. 
> The
> legacy stack doesn't work on Pi 5 at all.
> 
>> At the end cannot speak for the users. AFAIK OpenSuSE and Fedora use 
>> the
>> driver.

Guillaume (in CC) is more authoritative about this topic, but as long we 
have
smooth migration plan I am more than happy to switch to proper camera 
driver.

Regards,
Ivan