media: atomisp: Add support for v4l2-async sensor registration

From:		Hans de Goede <hdegoede-AT-redhat.com>
To:		Mauro Carvalho Chehab <mchehab-AT-kernel.org>, Sakari Ailus <sakari.ailus-AT-linux.intel.com>, Andy Shevchenko <andy-AT-kernel.org>
Subject:		[PATCH v2 0/5] media: atomisp: Add support for v4l2-async sensor registration
Date:		Thu, 25 May 2023 21:00:55 +0200
Message-ID:		<20230525190100.130010-1-hdegoede@redhat.com>
Cc:		Hans de Goede <hdegoede-AT-redhat.com>, Kate Hsuan <hpa-AT-redhat.com>, Tsuchiya Yuto <kitakar-AT-gmail.com>, Yury Luneff <yury.lunev-AT-gmail.com>, Nable <nable.maininbox-AT-googlemail.com>, andrey.i.trufanov-AT-gmail.com, Fabio Aiuto <fabioaiuto83-AT-gmail.com>, Dan Scally <djrscally-AT-gmail.com>, linux-media-AT-vger.kernel.org, linux-staging-AT-lists.linux.dev
Archive-link:		Article

Hi All,

Here is a new version of my v4l2-async sensor registration support
for atomisp. I have merged all the prep / cleanup patches which Andy
already gave his Reviewed-by for in my media-atomisp branch:

https://git.kernel.org/pub/scm/linux/kernel/git/hansg/lin...

This v2 series applies on top of that branch!

This v2 series is the remainder (and core part) of
my previous 2 related patch-series:

https://lore.kernel.org/linux-media/20230518153733.195306...
https://lore.kernel.org/linux-media/20230518153214.194976...

The big change in this v2 is making atomisp_csi2_bridge_init() also
add the ACPI GPIO mappings to the sensors it finds / it is adding
fwnode graph endpoints for. Combined with making sensor drivers
check there is a fwnode graph endpoint (and return -EPROBE_DEFER if not)
before trying to get GPIOs so that the mappings are in place before
getting the GPIOs.

Thank you Sakari for suggesting this nice solution.

Patch 1    Adds the v4l2-async sensor registration support
Patch 2-3  Convert the ov2680 and gc0310 drivers to this
Patch 4    Removes some now dead code
Patch 5    Moves the now fully standard / no custom atomisp API
           gc0310 sensor driver to drivers/media/i2c

Patches 1-4 only touch atomisp code and build on top of previous
work so I plan to merge these through my media-atomisp branch.

Patch 5 also depends on all the others, so it should also
get merged through my media-atomisp branch. Sakari may I have
your Ack for this ?  Alternatively we could delay the move to
the next kernel cycle and then it could be merged directly
into some other linux-media branch. Either way works for me.

Regards,

Hans


Hans de Goede (5):
  media: atomisp: Add support for v4l2-async sensor registration
  media: atomisp: ov2680: Turn into standard v4l2 sensor driver
  media: atomisp: gc0310: Turn into standard v4l2 sensor driver
  media: atomisp: Drop v4l2_get_acpi_sensor_info() function
  media: Move gc0310 sensor drivers to drivers/media/i2c/

 drivers/media/i2c/Kconfig                     |  10 +
 drivers/media/i2c/Makefile                    |   1 +
 .../atomisp-gc0310.c => media/i2c/gc0310.c}   |  29 +-
 drivers/staging/media/atomisp/Makefile        |   1 +
 drivers/staging/media/atomisp/i2c/Kconfig     |   8 -
 drivers/staging/media/atomisp/i2c/Makefile    |   1 -
 .../media/atomisp/i2c/atomisp-ov2680.c        |  38 +-
 drivers/staging/media/atomisp/i2c/ov2680.h    |   3 +-
 .../staging/media/atomisp/pci/atomisp_csi2.c  |   4 +
 .../staging/media/atomisp/pci/atomisp_csi2.h  |  88 +-
 .../media/atomisp/pci/atomisp_csi2_bridge.c   | 805 ++++++++++++++++++
 .../media/atomisp/pci/atomisp_gmin_platform.c | 240 ------
 .../media/atomisp/pci/atomisp_internal.h      |   2 +
 .../staging/media/atomisp/pci/atomisp_v4l2.c  |  38 +-
 .../staging/media/atomisp/pci/atomisp_v4l2.h  |   1 +
 15 files changed, 962 insertions(+), 307 deletions(-)
 rename drivers/{staging/media/atomisp/i2c/atomisp-gc0310.c => media/i2c/gc0310.c} (96%)
 create mode 100644 drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c

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