| From: |
| Shuah Khan <shuahkh@osg.samsung.com> |
| To: |
| mchehab@osg.samsung.com, laurent.pinchart@ideasonboard.com, sakari.ailus@iki.fi, hans.verkuil@cisco.com, chehabrafael@gmail.com, javier@osg.samsung.com, inki.dae@samsung.com, g.liakhovetski@gmx.de, jh1009.sung@samsung.com |
| Subject: |
| [PATCH v2 0/2] Media Device Allocator API |
| Date: |
| Tue, 24 May 2016 17:39:46 -0600 |
| Message-ID: |
| <cover.1464132578.git.shuahkh@osg.samsung.com> |
| Cc: |
| Shuah Khan <shuahkh@osg.samsung.com>, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org |
| Archive‑link: | |
Article |
Media Device Allocator API to allows multiple drivers share a media device.
Using this API, drivers can allocate a media device with the shared struct
device as the key. Once the media device is allocated by a driver, other
drivers can get a reference to it. The media device is released when all
the references are released.
This patch series has been tested with au0828 and snd-usb-audio drivers.
snd-us-audio patch isn't included in this series. Once this patch series
is reviews and gets a stable state, I will send out the snd-usb-audio
patch.
Changes since Patch v1 series: (based on Hans Virkuil's review)
- Removed media_device_get() and media_device_allocate(). These are
unnecessary.
- media_device_usb_allocate() holds media_device_lock to do allocate
and initialize the media device.
- Changed media_device_put() to media_device_delete() for symmetry with
media_device_*_allocate().
- Dropped media_device_unregister_put(). au0828 calls media_device_delete()
instead.
Shuah Khan (2):
media: Media Device Allocator API
media: change au0828 to use Media Device Allocator API
drivers/media/Makefile | 3 +-
drivers/media/media-dev-allocator.c | 120 +++++++++++++++++++++++++++++++++
drivers/media/usb/au0828/au0828-core.c | 12 ++--
drivers/media/usb/au0828/au0828.h | 1 +
include/media/media-dev-allocator.h | 85 +++++++++++++++++++++++
5 files changed, 212 insertions(+), 9 deletions(-)
create mode 100644 drivers/media/media-dev-allocator.c
create mode 100644 include/media/media-dev-allocator.h
--
2.7.4
