Hi all,
This set adds support for multiple downstream links in an async
sub-device, by separating the sub-device registration from the link
creation.
A new concept, V4L2 async connection is added. Generally async notifiers
have a number of connections but at that level there is no knowledge of
how many sub-devices they will connect to. The bound and unbound callbacks
now work on connections. For the existing drivers there's only one
connection so I do not expect regressions because of that.
Async sub-device fwnode matching will now take place between the device
(the dev field of struct v4l2_subdev) and a struct v4l2_async_connection
(an endpoint for devices that have endpoints or the device for those that
do not). This is because the graph data structure only describes
point-to-point connections so therefore defining one end of the connection
defines the entire connection.
This set is unlikely to address all needs people have related to the async
framework but I think that beyond what it does, it paves some way for
addressing more of those additional needs.
To be frank, I'd like to get rid of the entire V4L2 async framework, but
it would require allowing much more dynamic driver initialisation,
including sub-devices and device nodes popping up in the system in the
order and extent there is successfully probed hardware. Until that, and
this may well be the entire foreseeable future, we have at least some of
this complexity.
There's a bugfix, too, in the first patch. That should be merged
separately. The rest depends on it so I'm sending it as part of the set.
since RFC v1:
- Address missing API usage changes in a lot of drivers.
- Fix compilation problems in intermediate patches.
- Move V4L2 device registration earlier or move notifier initialisation
and fwnode endpoint parsing past the current V4L2 device registration
(patches 11--16).
Sakari Ailus (18):
media: v4l: async: Return async sub-devices to subnotifier list
media: v4l: async: Add some debug prints
media: v4l: async: Simplify async sub-device fwnode matching
media: v4l: async: Make V4L2 async match information a struct
media: v4l: async: Clean testing for duplicated async subdevs
media: v4l: async: Only pass match information for async subdev
validation
media: v4l: async: Clean up list heads and entries
media: v4l: async: Rename v4l2_async_subdev as v4l2_async_connection
media: v4l: async: Differentiate connecting and creating sub-devices
media: pxa_camera: Register V4L2 device early, fix probe error
handling
media: marvell: cafe: Register V4L2 device earlier
media: am437x-vpfe: Register V4L2 device early
media: omap3isp: Initialise V4L2 async notifier later
media: xilinx-vipp: Init async notifier after registering V4L2 device
media: davinci: Init async notifier after registering V4L2 device
media: qcom: Initialise V4L2 async notifier later
media: v4l: async: Set v4l2_device in async notifier init
Documentation: media: Document sub-device notifiers
.../driver-api/media/v4l2-subdev.rst | 16 +-
drivers/media/i2c/adv748x/adv748x-csi2.c | 3 -
drivers/media/i2c/max9286.c | 27 +-
drivers/media/i2c/rdacm20.c | 15 +-
drivers/media/i2c/rdacm21.c | 15 +-
drivers/media/i2c/st-mipid02.c | 12 +-
drivers/media/i2c/tc358746.c | 13 +-
drivers/media/pci/intel/ipu3/ipu3-cio2-main.c | 14 +-
drivers/media/platform/atmel/atmel-isi.c | 12 +-
drivers/media/platform/atmel/atmel-isi.h | 2 +-
drivers/media/platform/cadence/cdns-csi2rx.c | 10 +-
drivers/media/platform/intel/pxa_camera.c | 46 +-
drivers/media/platform/marvell/cafe-driver.c | 19 +-
drivers/media/platform/marvell/mcam-core.c | 12 +-
drivers/media/platform/marvell/mmp-driver.c | 6 +-
.../platform/microchip/microchip-csi2dc.c | 11 +-
.../platform/microchip/microchip-isc-base.c | 4 +-
.../media/platform/microchip/microchip-isc.h | 2 +-
.../microchip/microchip-sama5d2-isc.c | 9 +-
.../microchip/microchip-sama7g5-isc.c | 9 +-
drivers/media/platform/nxp/imx-mipi-csis.c | 10 +-
drivers/media/platform/nxp/imx7-media-csi.c | 10 +-
drivers/media/platform/qcom/camss/camss.c | 26 +-
drivers/media/platform/qcom/camss/camss.h | 2 +-
drivers/media/platform/renesas/rcar-isp.c | 12 +-
.../platform/renesas/rcar-vin/rcar-core.c | 26 +-
.../platform/renesas/rcar-vin/rcar-csi2.c | 12 +-
.../platform/renesas/rcar-vin/rcar-vin.h | 4 +-
drivers/media/platform/renesas/rcar_drif.c | 12 +-
drivers/media/platform/renesas/renesas-ceu.c | 10 +-
.../platform/renesas/rzg2l-cru/rzg2l-core.c | 14 +-
.../platform/renesas/rzg2l-cru/rzg2l-cru.h | 2 +-
.../platform/renesas/rzg2l-cru/rzg2l-csi2.c | 12 +-
.../platform/rockchip/rkisp1/rkisp1-dev.c | 12 +-
.../platform/samsung/exynos4-is/media-dev.c | 11 +-
.../platform/samsung/exynos4-is/media-dev.h | 2 +-
drivers/media/platform/st/stm32/stm32-dcmi.c | 12 +-
.../platform/sunxi/sun4i-csi/sun4i_csi.c | 10 +-
.../sunxi/sun6i-csi/sun6i_csi_bridge.c | 8 +-
.../sunxi/sun6i-csi/sun6i_csi_bridge.h | 2 +-
.../sunxi/sun6i-mipi-csi2/sun6i_mipi_csi2.c | 10 +-
.../sun8i_a83t_mipi_csi2.c | 10 +-
.../media/platform/ti/am437x/am437x-vpfe.c | 37 +-
.../media/platform/ti/am437x/am437x-vpfe.h | 2 +-
drivers/media/platform/ti/cal/cal.c | 10 +-
.../media/platform/ti/davinci/vpif_capture.c | 33 +-
drivers/media/platform/ti/omap3isp/isp.c | 17 +-
drivers/media/platform/video-mux.c | 10 +-
drivers/media/platform/xilinx/xilinx-vipp.c | 29 +-
drivers/media/v4l2-core/v4l2-async.c | 601 +++++++++++-------
drivers/media/v4l2-core/v4l2-fwnode.c | 20 +-
.../media/deprecated/atmel/atmel-isc-base.c | 4 +-
.../media/deprecated/atmel/atmel-isc.h | 2 +-
.../deprecated/atmel/atmel-sama5d2-isc.c | 9 +-
.../deprecated/atmel/atmel-sama7g5-isc.c | 4 +-
drivers/staging/media/imx/imx-media-csi.c | 10 +-
.../staging/media/imx/imx-media-dev-common.c | 8 +-
drivers/staging/media/imx/imx-media-dev.c | 2 +-
drivers/staging/media/imx/imx-media-of.c | 4 +-
drivers/staging/media/imx/imx6-mipi-csi2.c | 12 +-
drivers/staging/media/imx/imx8mq-mipi-csi2.c | 10 +-
.../media/sunxi/sun6i-isp/sun6i_isp_proc.c | 6 +-
.../media/sunxi/sun6i-isp/sun6i_isp_proc.h | 2 +-
drivers/staging/media/tegra-video/vi.c | 18 +-
drivers/staging/media/tegra-video/vi.h | 2 +-
include/media/davinci/vpif_types.h | 2 +-
include/media/v4l2-async.h | 181 +++---
include/media/v4l2-fwnode.h | 10 +-
include/media/v4l2-subdev.h | 2 +-
69 files changed, 825 insertions(+), 708 deletions(-)
--
2.30.2
