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Shuah Khan bc81c1c796 media: selftests: media_dev_allocator api test
Add a new test for Media Device Allocator API.

Media Device Allocator API to allows multiple drivers share a media device.
This API solves a very common use-case for media devices where one physical
device (an USB stick) provides both audio and video. When such media device
exposes a standard USB Audio class, a proprietary Video class, two or more
independent drivers will share a single physical USB bridge. In such cases,
it is necessary to coordinate access to the shared resource.

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 test does a series of unbind/bind tests to make sure media device
is released correctly when it is no longer is use and when the last
driver releases the reference.

Signed-off-by: Shuah Khan <shuah@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-04-22 11:23:14 -04:00
arch Kbuild updates for v5.1 (2nd) 2019-03-17 13:25:26 -07:00
block
certs
crypto
Documentation media: Media Device Allocator API 2019-04-22 11:18:26 -04:00
drivers media: au0828: fix enable and disable source audio and video inconsistencies 2019-04-22 11:22:30 -04:00
fs
include media: media.h: Enable ALSA MEDIA_INTF_T* interface types 2019-04-22 11:19:56 -04:00
init
ipc
kernel
lib Kbuild updates for v5.1 (2nd) 2019-03-17 13:25:26 -07:00
LICENSES
mm
net
samples
scripts
security
sound media: sound/usb: Use Media Controller API to share media resources 2019-04-22 11:21:06 -04:00
tools media: selftests: media_dev_allocator api test 2019-04-22 11:23:14 -04:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS media: MAINTAINERS: Fix files for obsolete SoC camera framework 2019-03-29 10:45:07 -04:00
Makefile Linux 5.1-rc1 2019-03-17 14:22:26 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.