Hi everybody,
Here is the seventh version of the media controller core and V4L2 patches. the first one to be sent outside of the linux-media mailing list.
Quick reminder for those who missed the previous version. let me quote the documentation (Documentation/DocBook/v4l/media-controller.xml).
"Discovering a [media] device internal topology, and configuring it at runtime, is one of the goals of the media controller API. To achieve this, hardware devices are modelled as an oriented graph of building blocks called entities connected through pads."
The code has been extensively reviewed by the V4L community, and this version is the first one to incorporate comments from the ALSA community (big thanks to Mark Brown and Clemens Ladisch). Two issues are not fully addressed yet, namely power management (I need to discuss this some more with the ALSA developers to really understand their requirements) and entities type names. I'm still posting this for review, as other developers have showed interest in commenting on the code.
I want to emphasize once again that the media controller API does not replace the V4L, DVB or ALSA APIs. It complements them.
The first user of the media controller API is the OMAP3 ISP driver. You can find it (as well as these patches and other V4L-specific patches) in a git tree at http://git.linuxtv.org/pinchartl/media.git (media-0004-omap3isp branch). The OMAP3 ISP driver patches are regularly posted for review on the linux-media list.
Laurent Pinchart (10): media: Media device node support media: Media device media: Entities, pads and links media: Media device information query media: Entities, pads and links enumeration media: Links setup media: Pipelines and media streams v4l: Add a media_device pointer to the v4l2_device structure v4l: Make video_device inherit from media_entity v4l: Make v4l2_subdev inherit from media_entity
Sakari Ailus (2): media: Entity graph traversal media: Reference count and power handling
Documentation/DocBook/media-entities.tmpl | 24 + Documentation/DocBook/media.tmpl | 3 + Documentation/DocBook/v4l/media-controller.xml | 89 +++ Documentation/DocBook/v4l/media-func-close.xml | 59 ++ Documentation/DocBook/v4l/media-func-ioctl.xml | 116 ++++ Documentation/DocBook/v4l/media-func-open.xml | 94 +++ .../DocBook/v4l/media-ioc-device-info.xml | 133 ++++ .../DocBook/v4l/media-ioc-enum-entities.xml | 308 +++++++++ Documentation/DocBook/v4l/media-ioc-enum-links.xml | 207 ++++++ Documentation/DocBook/v4l/media-ioc-setup-link.xml | 93 +++ Documentation/media-framework.txt | 383 +++++++++++ Documentation/video4linux/v4l2-framework.txt | 72 ++- drivers/media/Kconfig | 13 + drivers/media/Makefile | 10 +- drivers/media/media-device.c | 382 +++++++++++ drivers/media/media-devnode.c | 321 +++++++++ drivers/media/media-entity.c | 690 ++++++++++++++++++++ drivers/media/video/v4l2-dev.c | 49 ++- drivers/media/video/v4l2-device.c | 52 ++- drivers/media/video/v4l2-subdev.c | 41 ++- include/linux/Kbuild | 1 + include/linux/media.h | 132 ++++ include/media/media-device.h | 92 +++ include/media/media-devnode.h | 97 +++ include/media/media-entity.h | 148 +++++ include/media/v4l2-dev.h | 7 + include/media/v4l2-device.h | 4 + include/media/v4l2-subdev.h | 10 + 28 files changed, 3603 insertions(+), 27 deletions(-) create mode 100644 Documentation/DocBook/v4l/media-controller.xml create mode 100644 Documentation/DocBook/v4l/media-func-close.xml create mode 100644 Documentation/DocBook/v4l/media-func-ioctl.xml create mode 100644 Documentation/DocBook/v4l/media-func-open.xml create mode 100644 Documentation/DocBook/v4l/media-ioc-device-info.xml create mode 100644 Documentation/DocBook/v4l/media-ioc-enum-entities.xml create mode 100644 Documentation/DocBook/v4l/media-ioc-enum-links.xml create mode 100644 Documentation/DocBook/v4l/media-ioc-setup-link.xml create mode 100644 Documentation/media-framework.txt create mode 100644 drivers/media/media-device.c create mode 100644 drivers/media/media-devnode.c create mode 100644 drivers/media/media-entity.c create mode 100644 include/linux/media.h create mode 100644 include/media/media-device.h create mode 100644 include/media/media-devnode.h create mode 100644 include/media/media-entity.h