This patch series updates ALSA driver to use media controller API to share tuner with DVB and V4L2 drivers that control AU0828 media device. Two new interfaces are added to media controller API to enable creating media device as a device resource. This allows creating media device as a device resource on the main struct device that is common to all drivers that control a single media hardware and share resources on it. Drivers then can find the common media device to register entities and manage links, and pipelines.
Tested with and without CONFIG_MEDIA_CONTROLLER enabled. Tested tuner entity doesn't exist case as au0828 v4l2 driver is the one that will create the tuner when it gets updated to use media controller API.
Please note that au0828 updates media controller are necessary before the resource sharing can work across ALSA and au0828 dvb and v4l2 drivers. This work is in progress and another developer is working on it.
Shuah Khan (2): media: new media controller API for device resource support sound/usb: Update ALSA driver to use media controller API
drivers/media/media-device.c | 33 +++++++++++++++++++++++++ include/media/media-device.h | 2 ++ sound/usb/card.c | 5 ++++ sound/usb/card.h | 12 +++++++++ sound/usb/pcm.c | 23 +++++++++++++++++- sound/usb/quirks-table.h | 1 + sound/usb/quirks.c | 58 +++++++++++++++++++++++++++++++++++++++++++- sound/usb/quirks.h | 6 +++++ sound/usb/stream.c | 40 ++++++++++++++++++++++++++++++ sound/usb/usbaudio.h | 1 + 10 files changed, 179 insertions(+), 2 deletions(-)