summaryrefslogtreecommitdiffstats
path: root/Documentation
diff options
context:
space:
mode:
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-24 15:14:43 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-24 15:14:43 -0700
commitb5aef682e00c424bb2f55639168083b61803a012 (patch)
treeb7b69146e8331f96db02b766fc139d8a0907d446 /Documentation
parent90f8908127b55aa22f5a995880d5ac8cd23fbe1e (diff)
parent9e895ace5d82df8929b16f58e9f515f6d54ab82d (diff)
downloadlinux-b5aef682e00c424bb2f55639168083b61803a012.tar.bz2
Merge 3.10-rc7 into driver-core-next
We want the firmware merge fixes, and other bits, in here now. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/DocBook/media/v4l/dev-codec.xml35
-rw-r--r--Documentation/DocBook/media/v4l/v4l2.xml2
-rw-r--r--Documentation/devicetree/bindings/media/exynos-fimc-lite.txt2
-rw-r--r--Documentation/sound/alsa/HD-Audio-Models.txt3
4 files changed, 27 insertions, 15 deletions
diff --git a/Documentation/DocBook/media/v4l/dev-codec.xml b/Documentation/DocBook/media/v4l/dev-codec.xml
index dca0ecd54dc6..ff44c16fc080 100644
--- a/Documentation/DocBook/media/v4l/dev-codec.xml
+++ b/Documentation/DocBook/media/v4l/dev-codec.xml
@@ -1,18 +1,27 @@
<title>Codec Interface</title>
- <note>
- <title>Suspended</title>
+ <para>A V4L2 codec can compress, decompress, transform, or otherwise
+convert video data from one format into another format, in memory. Typically
+such devices are memory-to-memory devices (i.e. devices with the
+<constant>V4L2_CAP_VIDEO_M2M</constant> or <constant>V4L2_CAP_VIDEO_M2M_MPLANE</constant>
+capability set).
+</para>
- <para>This interface has been be suspended from the V4L2 API
-implemented in Linux 2.6 until we have more experience with codec
-device interfaces.</para>
- </note>
+ <para>A memory-to-memory video node acts just like a normal video node, but it
+supports both output (sending frames from memory to the codec hardware) and
+capture (receiving the processed frames from the codec hardware into memory)
+stream I/O. An application will have to setup the stream
+I/O for both sides and finally call &VIDIOC-STREAMON; for both capture and output
+to start the codec.</para>
- <para>A V4L2 codec can compress, decompress, transform, or otherwise
-convert video data from one format into another format, in memory.
-Applications send data to be converted to the driver through a
-&func-write; call, and receive the converted data through a
-&func-read; call. For efficiency a driver may also support streaming
-I/O.</para>
+ <para>Video compression codecs use the MPEG controls to setup their codec parameters
+(note that the MPEG controls actually support many more codecs than just MPEG).
+See <xref linkend="mpeg-controls"></xref>.</para>
- <para>[to do]</para>
+ <para>Memory-to-memory devices can often be used as a shared resource: you can
+open the video node multiple times, each application setting up their own codec properties
+that are local to the file handle, and each can use it independently from the others.
+The driver will arbitrate access to the codec and reprogram it whenever another file
+handler gets access. This is different from the usual video node behavior where the video properties
+are global to the device (i.e. changing something through one file handle is visible
+through another file handle).</para>
diff --git a/Documentation/DocBook/media/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml
index bfc93cdcf696..bfe823dd0f31 100644
--- a/Documentation/DocBook/media/v4l/v4l2.xml
+++ b/Documentation/DocBook/media/v4l/v4l2.xml
@@ -493,7 +493,7 @@ and discussions on the V4L mailing list.</revremark>
</partinfo>
<title>Video for Linux Two API Specification</title>
- <subtitle>Revision 3.9</subtitle>
+ <subtitle>Revision 3.10</subtitle>
<chapter id="common">
&sub-common;
diff --git a/Documentation/devicetree/bindings/media/exynos-fimc-lite.txt b/Documentation/devicetree/bindings/media/exynos-fimc-lite.txt
index 3f62adfb3e0b..de9f6b78ee51 100644
--- a/Documentation/devicetree/bindings/media/exynos-fimc-lite.txt
+++ b/Documentation/devicetree/bindings/media/exynos-fimc-lite.txt
@@ -2,7 +2,7 @@ Exynos4x12/Exynos5 SoC series camera host interface (FIMC-LITE)
Required properties:
-- compatible : should be "samsung,exynos4212-fimc" for Exynos4212 and
+- compatible : should be "samsung,exynos4212-fimc-lite" for Exynos4212 and
Exynos4412 SoCs;
- reg : physical base address and size of the device memory mapped
registers;
diff --git a/Documentation/sound/alsa/HD-Audio-Models.txt b/Documentation/sound/alsa/HD-Audio-Models.txt
index bb8b0dc532b8..77d68e23b247 100644
--- a/Documentation/sound/alsa/HD-Audio-Models.txt
+++ b/Documentation/sound/alsa/HD-Audio-Models.txt
@@ -29,6 +29,8 @@ ALC269/270/275/276/280/282
alc271-dmic Enable ALC271X digital mic workaround
inv-dmic Inverted internal mic workaround
lenovo-dock Enables docking station I/O for some Lenovos
+ dell-headset-multi Headset jack, which can also be used as mic-in
+ dell-headset-dock Headset jack (without mic-in), and also dock I/O
ALC662/663/272
==============
@@ -42,6 +44,7 @@ ALC662/663/272
asus-mode7 ASUS
asus-mode8 ASUS
inv-dmic Inverted internal mic workaround
+ dell-headset-multi Headset jack, which can also be used as mic-in
ALC680
======