hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

media updates for v4.5-rc1 

-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJWlNJNAAoJEAhfPr2O5OEVrVEP/3wGrkzC3ykROabLiuFx6+uN
 fUxMlSnnIwSPsiK7OIP45EHI7PJr2zRLfg4p3X6ABOTBtycziUQGP3ARCcqllrSG
 Tl7KoJokNBTiNRPY2nefC3gB7H36D+TBv3zgpR+vPggr6HGSfc8c6y6sETl/IAvl
 do7EltQ5BUJzgQ9/ZAM/FLBLNSLGexkqeJe7EC5IX0hqJ/tlc1vqIEu2xcdsG1cd
 w1k03C+/ukOr1wfcVmqlh9K2WCPZ59V0c3XcNS+4SeCKH4wnmmf4/BOrAuRFtCjh
 691RuXHXpZKdX1l9TVAmp9CuVvXNDjWdFfNovxVG8POn9TF769zI6t+9rCBSg5Gb
 lzSMOB75/EArOml8sU7gxhEsVsVw9RlukMN7luVwiqPi9vDSPzQw0fzvYkX85Ay3
 TMBW2z1cVjWBvjotTBkSg/rgqetmTgaU04kJ2vIqlfLLd8r/8o5ILZU5WzQtugLJ
 HHipyqG5FZIhXCRmqmr1cEmk+PKP8IA59zKQQG7Z2W+H3rqM6jakc3AxXtJFcz08
 8c4gwXrNBNCWYh9x6e3h0x3p5pdTvrhH0cG9BxWYwaqdCiFZVL+3ZgZB0LmlRc0m
 shJkNAGNX503SqeMQOJnfwEi7Kdeb8mIQBSvM1ZmCrheNwyxtrdJnFkJK3w+q/Tf
 PsycImJtKpskfiXbhqWR
 =6J4t
 -----END PGP SIGNATURE-----

Merge tag 'media/v4.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull second batch of media updates from Mauro Carvalho Chehab:
 "This is the second part of the media patches.  It contains the media
  controller next generation patches, with is the result of one year of
  discussions and development.  It also contains patches to enable media
  controller support at the DVB subsystem.

  The goal is to improve the media controller to allow proper support
  for other types of Video4Linux devices (radio and TV ones) and to
  extend the media controller functionality to allow it to be used by
  other subsystems like DVB, ALSA and IIO.

  In order to use the new functionality, a new ioctl is needed
  (MEDIA_IOC_G_TOPOLOGY).  As we're still discussing how to pack the
  struct fields of this ioctl in order to avoid compat32 issues, I
  decided to add a patch at the end of this series commenting out the
  new ioctl, in order to postpone the addition of the new ioctl to the
  next Kernel version (4.6).

  With that, no userspace visible changes should happen at the media
  controller API, as the existing ioctls are untouched.  Yet, it helps
  DVB, ALSA and IIO developers to develop and test the patches adding
  media controller support there, as the core will contain all required
  internal changes to allow adding support for devices that belong to
  those subsystems"

* tag 'media/v4.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (177 commits)
  [media] Postpone the addition of MEDIA_IOC_G_TOPOLOGY
  [media] mxl111sf: Add a tuner entity
  [media] dvbdev: create links on devices with multiple frontends
  [media] media-entitiy: add a function to create multiple links
  [media] dvb-usb-v2: postpone removal of media_device
  [media] dvbdev: Add RF connector if needed
  [media] dvbdev: remove two dead functions if !CONFIG_MEDIA_CONTROLLER_DVB
  [media] call media_device_init() before registering the V4L2 device
  [media] uapi/media.h: Use u32 for the number of graph objects
  [media] media-entity: don't sleep at media_device_register_entity()
  [media] media-entity: increase max number of PADs
  [media] media-entity.h: document the remaining functions
  [media] media-device.h: use just one u32 counter for object ID
  [media] media-entity.h fix documentation for several parameters
  [media] DocBook: document media_entity_graph_walk_cleanup()
  [media] move documentation to the header files
  [media] media: Move MEDIA_ENTITY_MAX_PADS from media-entity.h to media-entity.c
  [media] media: Remove pre-allocated entity enumeration bitmap
  [media] staging: v4l: davinci_vpbe: Use the new media graph walk interface
  [media] staging: v4l: omap4iss: Use the new media graph walk interface
  ...
This commit is contained in:
Linus Torvalds 2016-01-13 11:46:37 -08:00
parent 50ae833e47 be0270ec89
commit 77a76b04d2
130 changed files with 5270 additions and 1882 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/DocBook/device-drivers.tmpl
View File

@ -263,6 +263,7 @@ X!Isound/sound_firmware.c
!Iinclude/media/lirc_dev.h
</sect1>
<sect1><title>Media Controller devices</title>
!Pinclude/media/media-device.h Media Controller
!Iinclude/media/media-device.h
!Iinclude/media/media-devnode.h
!Iinclude/media/media-entity.h

44
Documentation/DocBook/media/v4l/media-controller.xml
View File

@ -58,21 +58,36 @@
<title>Media device model</title>
<para>Discovering a 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.</para>
<para>An entity is a basic media hardware or software building block. It can
correspond to a large variety of logical blocks such as physical hardware
devices (CMOS sensor for instance), logical hardware devices (a building
block in a System-on-Chip image processing pipeline), DMA channels or
physical connectors.</para>
<para>A pad is a connection endpoint through which an entity can interact
with other entities. Data (not restricted to video) produced by an entity
flows from the entity's output to one or more entity inputs. Pads should not
be confused with physical pins at chip boundaries.</para>
<para>A link is a point-to-point oriented connection between two pads,
either on the same entity or on different entities. Data flows from a source
pad to a sink pad.</para>
devices and Linux Kernel interfaces are modelled as graph objects on
an oriented graph. The object types that constitute the graph are:</para>
<itemizedlist>
<listitem><para>An <emphasis role="bold">entity</emphasis>
is a basic media hardware or software building block. It can correspond to
a large variety of logical blocks such as physical hardware devices
(CMOS sensor for instance), logical hardware devices (a building block in
a System-on-Chip image processing pipeline), DMA channels or physical
connectors.</para></listitem>
<listitem><para>An <emphasis role="bold">interface</emphasis>
is a graph representation of a Linux Kernel userspace API interface,
like a device node or a sysfs file that controls one or more entities
in the graph.</para></listitem>
<listitem><para>A <emphasis role="bold">pad</emphasis>
is a data connection endpoint through which an entity can interact with
other entities. Data (not restricted to video) produced by an entity
flows from the entity's output to one or more entity inputs. Pads should
not be confused with physical pins at chip boundaries.</para></listitem>
<listitem><para>A <emphasis role="bold">data link</emphasis>
is a point-to-point oriented connection between two pads, either on the
same entity or on different entities. Data flows from a source pad to a
sink pad.</para></listitem>
<listitem><para>An <emphasis role="bold">interface link</emphasis>
is a point-to-point bidirectional control connection between a Linux
Kernel interface and an entity.m</para></listitem>
</itemizedlist>
</section>
<!-- All non-ioctl specific data types go here. -->
&sub-media-types;
</chapter>
<appendix id="media-user-func">
@ -83,6 +98,7 @@
&sub-media-func-ioctl;
<!-- All ioctls go here. -->
&sub-media-ioc-device-info;
&sub-media-ioc-g-topology;
&sub-media-ioc-enum-entities;
&sub-media-ioc-enum-links;
&sub-media-ioc-setup-link;

104
Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml
View File

@ -59,15 +59,6 @@
<para>Entity IDs can be non-contiguous. Applications must
<emphasis>not</emphasis> try to enumerate entities by calling
MEDIA_IOC_ENUM_ENTITIES with increasing id's until they get an error.</para>
<para>Two or more entities that share a common non-zero
<structfield>group_id</structfield> value are considered as logically
grouped. Groups are used to report
<itemizedlist>
<listitem><para>ALSA, VBI and video nodes that carry the same media
stream</para></listitem>
<listitem><para>lens and flash controllers associated with a sensor</para></listitem>
</itemizedlist>
</para>
<table pgwide="1" frame="none" id="media-entity-desc">
<title>struct <structname>media_entity_desc</structname></title>
@ -106,7 +97,7 @@
<entry><structfield>revision</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Entity revision in a driver/hardware specific format.</entry>
<entry>Entity revision. Always zero (obsolete)</entry>
</row>
<row>
<entry>__u32</entry>
@ -120,7 +111,7 @@
<entry><structfield>group_id</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Entity group ID</entry>
<entry>Entity group ID. Always zero (obsolete)</entry>
</row>
<row>
<entry>__u16</entry>
@ -171,97 +162,6 @@
</tbody>
</tgroup>
</table>
<table frame="none" pgwide="1" id="media-entity-type">
<title>Media entity types</title>
<tgroup cols="2">
<colspec colname="c1"/>
<colspec colname="c2"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE</constant></entry>
<entry>Unknown device node</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_V4L</constant></entry>
<entry>V4L video, radio or vbi device node</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_FB</constant></entry>
<entry>Frame buffer device node</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_ALSA</constant></entry>
<entry>ALSA card</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_FE</constant></entry>
<entry>DVB frontend devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_DEMUX</constant></entry>
<entry>DVB demux devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_DVR</constant></entry>
<entry>DVB DVR devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_CA</constant></entry>
<entry>DVB CAM devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_DEVNODE_DVB_NET</constant></entry>
<entry>DVB network devnode</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_V4L2_SUBDEV</constant></entry>
<entry>Unknown V4L sub-device</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_SENSOR</constant></entry>
<entry>Video sensor</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_FLASH</constant></entry>
<entry>Flash controller</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_LENS</constant></entry>
<entry>Lens controller</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_DECODER</constant></entry>
<entry>Video decoder, the basic function of the video decoder is to
accept analogue video from a wide variety of sources such as
broadcast, DVD players, cameras and video cassette recorders, in
either NTSC, PAL or HD format and still occasionally SECAM, separate
it into its component parts, luminance and chrominance, and output
it in some digital video standard, with appropriate embedded timing
signals.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_TUNER</constant></entry>
<entry>TV and/or radio tuner</entry>
</row>
</tbody>
</tgroup>
</table>
<table frame="none" pgwide="1" id="media-entity-flag">
<title>Media entity flags</title>
<tgroup cols="2">
<colspec colname="c1"/>
<colspec colname="c2"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_ENT_FL_DEFAULT</constant></entry>
<entry>Default entity for its type. Used to discover the default
audio, VBI and video devices, the default camera sensor, ...</entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1>
<refsect1>

56
Documentation/DocBook/media/v4l/media-ioc-enum-links.xml
View File

@ -118,35 +118,6 @@
</tgroup>
</table>
<table frame="none" pgwide="1" id="media-pad-flag">
<title>Media pad flags</title>
<tgroup cols="2">
<colspec colname="c1"/>
<colspec colname="c2"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_PAD_FL_SINK</constant></entry>
<entry>Input pad, relative to the entity. Input pads sink data and
are targets of links.</entry>
</row>
<row>
<entry><constant>MEDIA_PAD_FL_SOURCE</constant></entry>
<entry>Output pad, relative to the entity. Output pads source data
and are origins of links.</entry>
</row>
<row>
<entry><constant>MEDIA_PAD_FL_MUST_CONNECT</constant></entry>
<entry>If this flag is set and the pad is linked to any other
pad, then at least one of those links must be enabled for the
entity to be able to stream. There could be temporary reasons
(e.g. device configuration dependent) for the pad to need
enabled links even when this flag isn't set; the absence of the
flag doesn't imply there is none.</entry>
</row>
</tbody>
</tgroup>
</table>
<table pgwide="1" frame="none" id="media-link-desc">
<title>struct <structname>media_link_desc</structname></title>
<tgroup cols="3">
@ -171,33 +142,6 @@
</tgroup>
</table>
<table frame="none" pgwide="1" id="media-link-flag">
<title>Media link flags</title>
<tgroup cols="2">
<colspec colname="c1"/>
<colspec colname="c2"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_LNK_FL_ENABLED</constant></entry>
<entry>The link is enabled and can be used to transfer media data.
When two or more links target a sink pad, only one of them can be
enabled at a time.</entry>
</row>
<row>
<entry><constant>MEDIA_LNK_FL_IMMUTABLE</constant></entry>
<entry>The link enabled state can't be modified at runtime. An
immutable link is always enabled.</entry>
</row>
<row>
<entry><constant>MEDIA_LNK_FL_DYNAMIC</constant></entry>
<entry>The link enabled state can be modified during streaming. This
flag is set by drivers and is read-only for applications.</entry>
</row>
</tbody>
</tgroup>
</table>
<para>One and only one of <constant>MEDIA_PAD_FL_SINK</constant> and
<constant>MEDIA_PAD_FL_SOURCE</constant> must be set for every pad.</para>
</refsect1>
<refsect1>

394
Documentation/DocBook/media/v4l/media-ioc-g-topology.xml Normal file
View File

@ -0,0 +1,394 @@
<refentry id="media-g-topology">
<refmeta>
<refentrytitle>ioctl MEDIA_IOC_G_TOPOLOGY</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname>MEDIA_IOC_G_TOPOLOGY</refname>
<refpurpose>Enumerate the graph topology and graph element properties</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcprototype>
<funcdef>int <function>ioctl</function></funcdef>
<paramdef>int <parameter>fd</parameter></paramdef>
<paramdef>int <parameter>request</parameter></paramdef>
<paramdef>struct media_v2_topology *<parameter>argp</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Arguments</title>
<variablelist>
<varlistentry>
<term><parameter>fd</parameter></term>
<listitem>
<para>File descriptor returned by
<link linkend='media-func-open'><function>open()</function></link>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>request</parameter></term>
<listitem>
<para>MEDIA_IOC_G_TOPOLOGY</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>argp</parameter></term>
<listitem>
<para></para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Description</title>
<para><emphasis role="bold">NOTE:</emphasis> This new ioctl is programmed to be added on Kernel 4.6. Its definition/arguments may change until its final version.</para>
<para>The typical usage of this ioctl is to call it twice.
On the first call, the structure defined at &media-v2-topology; should
be zeroed. At return, if no errors happen, this ioctl will return the
<constant>topology_version</constant> and the total number of entities,
interfaces, pads and links.</para>
<para>Before the second call, the userspace should allocate arrays to
store the graph elements that are desired, putting the pointers to them
at the ptr_entities, ptr_interfaces, ptr_links and/or ptr_pads, keeping
the other values untouched.</para>
<para>If the <constant>topology_version</constant> remains the same, the
ioctl should fill the desired arrays with the media graph elements.</para>
<table pgwide="1" frame="none" id="media-v2-topology">
<title>struct <structname>media_v2_topology</structname></title>
<tgroup cols="5">
<colspec colname="c1" />
<colspec colname="c2" />
<colspec colname="c3" />
<colspec colname="c4" />
<colspec colname="c5" />
<tbody valign="top">
<row>
<entry>__u64</entry>
<entry><structfield>topology_version</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Version of the media graph topology. When the graph is
created, this field starts with zero. Every time a graph
element is added or removed, this field is
incremented.</entry>
</row>
<row>
<entry>__u64</entry>
<entry><structfield>num_entities</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Number of entities in the graph</entry>
</row>
<row>
<entry>__u64</entry>
<entry><structfield>ptr_entities</structfield></entry>
<entry></entry>
<entry></entry>
<entry>A pointer to a memory area where the entities array
will be stored, converted to a 64-bits integer.
It can be zero. if zero, the ioctl won't store the
entities. It will just update
<constant>num_entities</constant></entry>
</row>
<row>
<entry>__u64</entry>
<entry><structfield>num_interfaces</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Number of interfaces in the graph</entry>
</row>
<row>
<entry>__u64</entry>
<entry><structfield>ptr_interfaces</structfield></entry>
<entry></entry>
<entry></entry>
<entry>A pointer to a memory area where the interfaces array
will be stored, converted to a 64-bits integer.
It can be zero. if zero, the ioctl won't store the
interfaces. It will just update
<constant>num_interfaces</constant></entry>
</row>
<row>
<entry>__u64</entry>
<entry><structfield>num_pads</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Total number of pads in the graph</entry>
</row>
<row>
<entry>__u64</entry>
<entry><structfield>ptr_pads</structfield></entry>
<entry></entry>
<entry></entry>
<entry>A pointer to a memory area where the pads array
will be stored, converted to a 64-bits integer.
It can be zero. if zero, the ioctl won't store the
pads. It will just update
<constant>num_pads</constant></entry>
</row>
<row>
<entry>__u64</entry>
<entry><structfield>num_links</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Total number of data and interface links in the graph</entry>
</row>
<row>
<entry>__u64</entry>
<entry><structfield>ptr_links</structfield></entry>
<entry></entry>
<entry></entry>
<entry>A pointer to a memory area where the links array
will be stored, converted to a 64-bits integer.
It can be zero. if zero, the ioctl won't store the
links. It will just update
<constant>num_links</constant></entry>
</row>
</tbody>
</tgroup>
</table>
<table pgwide="1" frame="none" id="media-v2-entity">
<title>struct <structname>media_v2_entity</structname></title>
<tgroup cols="5">
<colspec colname="c1" />
<colspec colname="c2" />
<colspec colname="c3" />
<colspec colname="c4" />
<colspec colname="c5" />
<tbody valign="top">
<row>
<entry>__u32</entry>
<entry><structfield>id</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Unique ID for the entity.</entry>
</row>
<row>
<entry>char</entry>
<entry><structfield>name</structfield>[64]</entry>
<entry></entry>
<entry></entry>
<entry>Entity name as an UTF-8 NULL-terminated string.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>function</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Entity main function, see <xref linkend="media-entity-type" /> for details.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[12]</entry>
<entry>Reserved for future extensions. Drivers and applications must
set this array to zero.</entry>
</row>
</tbody>
</tgroup>
</table>
<table pgwide="1" frame="none" id="media-v2-interface">
<title>struct <structname>media_v2_interface</structname></title>
<tgroup cols="5">
<colspec colname="c1" />
<colspec colname="c2" />
<colspec colname="c3" />
<colspec colname="c4" />
<colspec colname="c5" />
<tbody valign="top">
<row>
<entry>__u32</entry>
<entry><structfield>id</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Unique ID for the interface.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>intf_type</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Interface type, see <xref linkend="media-intf-type" /> for details.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>flags</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Interface flags. Currently unused.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[9]</entry>
<entry></entry>
<entry></entry>
<entry>Reserved for future extensions. Drivers and applications must
set this array to zero.</entry>
</row>
<row>
<entry>struct media_v2_intf_devnode</entry>
<entry><structfield>devnode</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Used only for device node interfaces. See <xref linkend="media-v2-intf-devnode" /> for details..</entry>
</row>
</tbody>
</tgroup>
</table>
<table pgwide="1" frame="none" id="media-v2-intf-devnode">
<title>struct <structname>media_v2_interface</structname></title>
<tgroup cols="5">
<colspec colname="c1" />
<colspec colname="c2" />
<colspec colname="c3" />
<colspec colname="c4" />
<colspec colname="c5" />
<tbody valign="top">
<row>
<entry>__u32</entry>
<entry><structfield>major</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Device node major number.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>minor</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Device node minor number.</entry>
</row>
</tbody>
</tgroup>
</table>
<table pgwide="1" frame="none" id="media-v2-pad">
<title>struct <structname>media_v2_pad</structname></title>
<tgroup cols="5">
<colspec colname="c1" />
<colspec colname="c2" />
<colspec colname="c3" />
<colspec colname="c4" />
<colspec colname="c5" />
<tbody valign="top">
<row>
<entry>__u32</entry>
<entry><structfield>id</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Unique ID for the pad.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>entity_id</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Unique ID for the entity where this pad belongs.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>flags</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Pad flags, see <xref linkend="media-pad-flag" /> for more details.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[9]</entry>
<entry></entry>
<entry></entry>
<entry>Reserved for future extensions. Drivers and applications must
set this array to zero.</entry>
</row>
</tbody>
</tgroup>
</table>
<table pgwide="1" frame="none" id="media-v2-link">
<title>struct <structname>media_v2_pad</structname></title>
<tgroup cols="5">
<colspec colname="c1" />
<colspec colname="c2" />
<colspec colname="c3" />
<colspec colname="c4" />
<colspec colname="c5" />
<tbody valign="top">
<row>
<entry>__u32</entry>
<entry><structfield>id</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Unique ID for the pad.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>source_id</structfield></entry>
<entry></entry>
<entry></entry>
<entry>
<para>On pad to pad links: unique ID for the source pad.</para>
<para>On interface to entity links: unique ID for the interface.</para>
</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>sink_id</structfield></entry>
<entry></entry>
<entry></entry>
<entry>
<para>On pad to pad links: unique ID for the sink pad.</para>
<para>On interface to entity links: unique ID for the entity.</para>
</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>flags</structfield></entry>
<entry></entry>
<entry></entry>
<entry>Link flags, see <xref linkend="media-link-flag" /> for more details.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[5]</entry>
<entry></entry>
<entry></entry>
<entry>Reserved for future extensions. Drivers and applications must
set this array to zero.</entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1>
<refsect1>
&return-value;
<variablelist>
<varlistentry>
<term><errorcode>ENOSPC</errorcode></term>
<listitem>
<para>This is returned when either one or more of the num_entities,
num_interfaces, num_links or num_pads are non-zero and are smaller
than the actual number of elements inside the graph. This may happen
if the <constant>topology_version</constant> changed when compared
to the last time this ioctl was called. Userspace should usually
free the area for the pointers, zero the struct elements and call
this ioctl again.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
</refentry>

240
Documentation/DocBook/media/v4l/media-types.xml Normal file
View File

@ -0,0 +1,240 @@
<section id="media-controller-types">
<title>Types and flags used to represent the media graph elements</title>
<table frame="none" pgwide="1" id="media-entity-type">
<title>Media entity types</title>
<tgroup cols="2">
<colspec colname="c1"/>
<colspec colname="c2"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_ENT_F_UNKNOWN</constant> and <constant>MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN</constant></entry>
<entry>Unknown entity. That generally indicates that
a driver didn't initialize properly the entity, with is a Kernel bug</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_IO_V4L</constant></entry>
<entry>Data streaming input and/or output entity.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_IO_VBI</constant></entry>
<entry>V4L VBI streaming input or output entity</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_IO_SWRADIO</constant></entry>
<entry>V4L Software Digital Radio (SDR) streaming input or output entity</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_IO_DTV</constant></entry>
<entry>DVB Digital TV streaming input or output entity</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_DTV_DEMOD</constant></entry>
<entry>Digital TV demodulator entity.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_TS_DEMUX</constant></entry>
<entry>MPEG Transport stream demux entity. Could be implemented on hardware or in Kernelspace by the Linux DVB subsystem.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_DTV_CA</constant></entry>
<entry>Digital TV Conditional Access module (CAM) entity</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_DTV_NET_DECAP</constant></entry>
<entry>Digital TV network ULE/MLE desencapsulation entity. Could be implemented on hardware or in Kernelspace</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_CONN_RF</constant></entry>
<entry>Connector for a Radio Frequency (RF) signal.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_CONN_SVIDEO</constant></entry>
<entry>Connector for a S-Video signal.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_CONN_COMPOSITE</constant></entry>
<entry>Connector for a RGB composite signal.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_CONN_TEST</constant></entry>
<entry>Connector for a test generator.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_CAM_SENSOR</constant></entry>
<entry>Camera video sensor entity.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_FLASH</constant></entry>
<entry>Flash controller entity.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_LENS</constant></entry>
<entry>Lens controller entity.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_ATV_DECODER</constant></entry>
<entry>Analog video decoder, the basic function of the video decoder
is to accept analogue video from a wide variety of sources such as
broadcast, DVD players, cameras and video cassette recorders, in
either NTSC, PAL, SECAM or HD format, separating the stream
into its component parts, luminance and chrominance, and output
it in some digital video standard, with appropriate timing
signals.</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_F_TUNER</constant></entry>
<entry>Digital TV, analog TV, radio and/or software radio tuner.</entry>
</row>
</tbody>
</tgroup>
</table>
<table frame="none" pgwide="1" id="media-entity-flag">
<title>Media entity flags</title>
<tgroup cols="2">
<colspec colname="c1"/>
<colspec colname="c2"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_ENT_FL_DEFAULT</constant></entry>
<entry>Default entity for its type. Used to discover the default
audio, VBI and video devices, the default camera sensor, ...</entry>
</row>
<row>
<entry><constant>MEDIA_ENT_FL_CONNECTOR</constant></entry>
<entry>The entity represents a data conector</entry>
</row>
</tbody>
</tgroup>
</table>
<table frame="none" pgwide="1" id="media-intf-type">
<title>Media interface types</title>
<tgroup cols="3">
<colspec colname="c1"/>
<colspec colname="c2"/>
<colspec colname="c3"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_INTF_T_DVB_FE</constant></entry>
<entry>Device node interface for the Digital TV frontend</entry>
<entry>typically, /dev/dvb/adapter?/frontend?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_DVB_DEMUX</constant></entry>
<entry>Device node interface for the Digital TV demux</entry>
<entry>typically, /dev/dvb/adapter?/demux?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_DVB_DVR</constant></entry>
<entry>Device node interface for the Digital TV DVR</entry>
<entry>typically, /dev/dvb/adapter?/dvr?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_DVB_CA</constant></entry>
<entry>Device node interface for the Digital TV Conditional Access</entry>
<entry>typically, /dev/dvb/adapter?/ca?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_DVB_FE</constant></entry>
<entry>Device node interface for the Digital TV network control</entry>
<entry>typically, /dev/dvb/adapter?/net?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_V4L_VIDEO</constant></entry>
<entry>Device node interface for video (V4L)</entry>
<entry>typically, /dev/video?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_V4L_VBI</constant></entry>
<entry>Device node interface for VBI (V4L)</entry>
<entry>typically, /dev/vbi?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_V4L_RADIO</constant></entry>
<entry>Device node interface for radio (V4L)</entry>
<entry>typically, /dev/vbi?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_V4L_SUBDEV</constant></entry>
<entry>Device node interface for a V4L subdevice</entry>
<entry>typically, /dev/v4l-subdev?</entry>
</row>
<row>
<entry><constant>MEDIA_INTF_T_V4L_SWRADIO</constant></entry>
<entry>Device node interface for Software Defined Radio (V4L)</entry>
<entry>typically, /dev/swradio?</entry>
</row>
</tbody>
</tgroup>
</table>
<table frame="none" pgwide="1" id="media-pad-flag">
<title>Media pad flags</title>
<tgroup cols="2">
<colspec colname="c1"/>
<colspec colname="c2"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_PAD_FL_SINK</constant></entry>
<entry>Input pad, relative to the entity. Input pads sink data and
are targets of links.</entry>
</row>
<row>
<entry><constant>MEDIA_PAD_FL_SOURCE</constant></entry>
<entry>Output pad, relative to the entity. Output pads source data
and are origins of links.</entry>
</row>
<row>
<entry><constant>MEDIA_PAD_FL_MUST_CONNECT</constant></entry>
<entry>If this flag is set and the pad is linked to any other
pad, then at least one of those links must be enabled for the
entity to be able to stream. There could be temporary reasons
(e.g. device configuration dependent) for the pad to need
enabled links even when this flag isn't set; the absence of the
flag doesn't imply there is none.</entry>
</row>
</tbody>
</tgroup>
</table>
<para>One and only one of <constant>MEDIA_PAD_FL_SINK</constant> and
<constant>MEDIA_PAD_FL_SOURCE</constant> must be set for every pad.</para>
<table frame="none" pgwide="1" id="media-link-flag">
<title>Media link flags</title>
<tgroup cols="2">
<colspec colname="c1"/>
<colspec colname="c2"/>
<tbody valign="top">
<row>
<entry><constant>MEDIA_LNK_FL_ENABLED</constant></entry>
<entry>The link is enabled and can be used to transfer media data.
When two or more links target a sink pad, only one of them can be
enabled at a time.</entry>
</row>
<row>
<entry><constant>MEDIA_LNK_FL_IMMUTABLE</constant></entry>
<entry>The link enabled state can't be modified at runtime. An
immutable link is always enabled.</entry>
</row>
<row>
<entry><constant>MEDIA_LNK_FL_DYNAMIC</constant></entry>
<entry>The link enabled state can be modified during streaming. This
flag is set by drivers and is read-only for applications.</entry>
</row>
<row>
<entry><constant>MEDIA_LNK_FL_LINK_TYPE</constant></entry>
<entry><para>This is a bitmask that defines the type of the link.
Currently, two types of links are supported:</para>
<para><constant>MEDIA_LNK_FL_DATA_LINK</constant>
if the link is between two pads</para>
<para><constant>MEDIA_LNK_FL_INTERFACE_LINK</constant>
if the link is between an interface and an entity</para></entry>
</row>
</tbody>
</tgroup>
</table>
</section>

372
Documentation/media-framework.txt
View File

@ -1,372 +0,0 @@
Linux kernel media framework
============================
This document describes the Linux kernel media framework, its data structures,
functions and their usage.
Introduction
------------
The media controller API is documented in DocBook format in
Documentation/DocBook/media/v4l/media-controller.xml. This document will focus
on the kernel-side implementation of the media framework.
Abstract media device model
---------------------------
Discovering a device internal topology, and configuring it at runtime, is one
of the goals of the media framework. To achieve this, hardware devices are
modelled as an oriented graph of building blocks called entities connected
through pads.
An entity is a basic media hardware building block. It can correspond to
a large variety of logical blocks such as physical hardware devices
(CMOS sensor for instance), logical hardware devices (a building block
in a System-on-Chip image processing pipeline), DMA channels or physical
connectors.
A pad is a connection endpoint through which an entity can interact with
other entities. Data (not restricted to video) produced by an entity
flows from the entity's output to one or more entity inputs. Pads should
not be confused with physical pins at chip boundaries.
A link is a point-to-point oriented connection between two pads, either
on the same entity or on different entities. Data flows from a source
pad to a sink pad.
Media device
------------
A media device is represented by a struct media_device instance, defined in
include/media/media-device.h. Allocation of the structure is handled by the
media device driver, usually by embedding the media_device instance in a
larger driver-specific structure.
Drivers register media device instances by calling
media_device_register(struct media_device *mdev);
The caller is responsible for initializing the media_device structure before
registration. The following fields must be set:
- dev must point to the parent device (usually a pci_dev, usb_interface or
platform_device instance).
- model must be filled with the device model name as a NUL-terminated UTF-8
string. The device/model revision must not be stored in this field.
The following fields are optional:
- serial is a unique serial number stored as a NUL-terminated ASCII string.
The field is big enough to store a GUID in text form. If the hardware
doesn't provide a unique serial number this field must be left empty.
- bus_info represents the location of the device in the system as a
NUL-terminated ASCII string. For PCI/PCIe devices bus_info must be set to
"PCI:" (or "PCIe:") followed by the value of pci_name(). For USB devices,
the usb_make_path() function must be used. This field is used by
applications to distinguish between otherwise identical devices that don't
provide a serial number.
- hw_revision is the hardware device revision in a driver-specific format.
When possible the revision should be formatted with the KERNEL_VERSION
macro.
- driver_version is formatted with the KERNEL_VERSION macro. The version
minor must be incremented when new features are added to the userspace API
without breaking binary compatibility. The version major must be
incremented when binary compatibility is broken.
Upon successful registration a character device named media[0-9]+ is created.
The device major and minor numbers are dynamic. The model name is exported as
a sysfs attribute.
Drivers unregister media device instances by calling
media_device_unregister(struct media_device *mdev);
Unregistering a media device that hasn't been registered is *NOT* safe.
Entities, pads and links
------------------------
- Entities
Entities are represented by a struct media_entity instance, defined in
include/media/media-entity.h. The structure is usually embedded into a
higher-level structure, such as a v4l2_subdev or video_device instance,
although drivers can allocate entities directly.
Drivers initialize entities by calling
media_entity_init(struct media_entity *entity, u16 num_pads,
struct media_pad *pads, u16 extra_links);
The media_entity name, type, flags, revision and group_id fields can be
initialized before or after calling media_entity_init. Entities embedded in
higher-level standard structures can have some of those fields set by the
higher-level framework.
As the number of pads is known in advance, the pads array is not allocated
dynamically but is managed by the entity driver. Most drivers will embed the
pads array in a driver-specific structure, avoiding dynamic allocation.
Drivers must set the direction of every pad in the pads array before calling
media_entity_init. The function will initialize the other pads fields.
Unlike the number of pads, the total number of links isn't always known in
advance by the entity driver. As an initial estimate, media_entity_init
pre-allocates a number of links equal to the number of pads plus an optional
number of extra links. The links array will be reallocated if it grows beyond
the initial estimate.
Drivers register entities with a media device by calling
media_device_register_entity(struct media_device *mdev,
struct media_entity *entity);
Entities are identified by a unique positive integer ID. Drivers can provide an
ID by filling the media_entity id field prior to registration, or request the
media controller framework to assign an ID automatically. Drivers that provide
IDs manually must ensure that all IDs are unique. IDs are not guaranteed to be
contiguous even when they are all assigned automatically by the framework.
Drivers unregister entities by calling
media_device_unregister_entity(struct media_entity *entity);
Unregistering an entity will not change the IDs of the other entities, and the
ID will never be reused for a newly registered entity.
When a media device is unregistered, all its entities are unregistered
automatically. No manual entities unregistration is then required.
Drivers free resources associated with an entity by calling
media_entity_cleanup(struct media_entity *entity);
This function must be called during the cleanup phase after unregistering the
entity. Note that the media_entity instance itself must be freed explicitly by
the driver if required.
Entities have flags that describe the entity capabilities and state.
MEDIA_ENT_FL_DEFAULT indicates the default entity for a given type.
This can be used to report the default audio and video devices or the
default camera sensor.
Logical entity groups can be defined by setting the group ID of all member
entities to the same non-zero value. An entity group serves no purpose in the
kernel, but is reported to userspace during entities enumeration. The group_id
field belongs to the media device driver and must not by touched by entity
drivers.
Media device drivers should define groups if several entities are logically
bound together. Example usages include reporting
- ALSA, VBI and video nodes that carry the same media stream
- lens and flash controllers associated with a sensor
- Pads
Pads are represented by a struct media_pad instance, defined in
include/media/media-entity.h. Each entity stores its pads in a pads array
managed by the entity driver. Drivers usually embed the array in a
driver-specific structure.
Pads are identified by their entity and their 0-based index in the pads array.
Both information are stored in the media_pad structure, making the media_pad
pointer the canonical way to store and pass link references.
Pads have flags that describe the pad capabilities and state.
MEDIA_PAD_FL_SINK indicates that the pad supports sinking data.
MEDIA_PAD_FL_SOURCE indicates that the pad supports sourcing data.
One and only one of MEDIA_PAD_FL_SINK and MEDIA_PAD_FL_SOURCE must be set for
each pad.
- Links
Links are represented by a struct media_link instance, defined in
include/media/media-entity.h. Each entity stores all links originating at or
targeting any of its pads in a links array. A given link is thus stored
twice, once in the source entity and once in the target entity. The array is
pre-allocated and grows dynamically as needed.
Drivers create links by calling
media_entity_create_link(struct media_entity *source, u16 source_pad,
struct media_entity *sink, u16 sink_pad,
u32 flags);
An entry in the link array of each entity is allocated and stores pointers
to source and sink pads.
Links have flags that describe the link capabilities and state.
MEDIA_LNK_FL_ENABLED indicates that the link is enabled and can be used
to transfer media data. When two or more links target a sink pad, only
one of them can be enabled at a time.
MEDIA_LNK_FL_IMMUTABLE indicates that the link enabled state can't be
modified at runtime. If MEDIA_LNK_FL_IMMUTABLE is set, then
MEDIA_LNK_FL_ENABLED must also be set since an immutable link is always
enabled.
Graph traversal
---------------
The media framework provides APIs to iterate over entities in a graph.
To iterate over all entities belonging to a media device, drivers can use the
media_device_for_each_entity macro, defined in include/media/media-device.h.
struct media_entity *entity;
media_device_for_each_entity(entity, mdev) {
/* entity will point to each entity in turn */
...
}
Drivers might also need to iterate over all entities in a graph that can be
reached only through enabled links starting at a given entity. The media
framework provides a depth-first graph traversal API for that purpose.
Note that graphs with cycles (whether directed or undirected) are *NOT*
supported by the graph traversal API. To prevent infinite loops, the graph
traversal code limits the maximum depth to MEDIA_ENTITY_ENUM_MAX_DEPTH,
currently defined as 16.
Drivers initiate a graph traversal by calling
media_entity_graph_walk_start(struct media_entity_graph *graph,
struct media_entity *entity);
The graph structure, provided by the caller, is initialized to start graph
traversal at the given entity.
Drivers can then retrieve the next entity by calling
media_entity_graph_walk_next(struct media_entity_graph *graph);
When the graph traversal is complete the function will return NULL.
Graph traversal can be interrupted at any moment. No cleanup function call is
required and the graph structure can be freed normally.
Helper functions can be used to find a link between two given pads, or a pad
connected to another pad through an enabled link
media_entity_find_link(struct media_pad *source,
struct media_pad *sink);
media_entity_remote_pad(struct media_pad *pad);
Refer to the kerneldoc documentation for more information.
Use count and power handling
----------------------------
Due to the wide differences between drivers regarding power management needs,
the media controller does not implement power management. However, the
media_entity structure includes a use_count field that media drivers can use to
track the number of users of every entity for power management needs.
The use_count field is owned by media drivers and must not be touched by entity
drivers. Access to the field must be protected by the media device graph_mutex
lock.
Links setup
-----------
Link properties can be modified at runtime by calling
media_entity_setup_link(struct media_link *link, u32 flags);
The flags argument contains the requested new link flags.
The only configurable property is the ENABLED link flag to enable/disable a
link. Links marked with the IMMUTABLE link flag can not be enabled or disabled.
When a link is enabled or disabled, the media framework calls the
link_setup operation for the two entities at the source and sink of the link,
in that order. If the second link_setup call fails, another link_setup call is
made on the first entity to restore the original link flags.
Media device drivers can be notified of link setup operations by setting the
media_device::link_notify pointer to a callback function. If provided, the
notification callback will be called before enabling and after disabling
links.
Entity drivers must implement the link_setup operation if any of their links
is non-immutable. The operation must either configure the hardware or store
the configuration information to be applied later.
Link configuration must not have any side effect on other links. If an enabled
link at a sink pad prevents another link at the same pad from being enabled,
the link_setup operation must return -EBUSY and can't implicitly disable the
first enabled link.
Pipelines and media streams
---------------------------
When starting streaming, drivers must notify all entities in the pipeline to
prevent link states from being modified during streaming by calling
media_entity_pipeline_start(struct media_entity *entity,
struct media_pipeline *pipe);
The function will mark all entities connected to the given entity through
enabled links, either directly or indirectly, as streaming.
The media_pipeline instance pointed to by the pipe argument will be stored in
every entity in the pipeline. Drivers should embed the media_pipeline structure
in higher-level pipeline structures and can then access the pipeline through
the media_entity pipe field.
Calls to media_entity_pipeline_start() can be nested. The pipeline pointer must
be identical for all nested calls to the function.
media_entity_pipeline_start() may return an error. In that case, it will
clean up any of the changes it did by itself.
When stopping the stream, drivers must notify the entities with
media_entity_pipeline_stop(struct media_entity *entity);
If multiple calls to media_entity_pipeline_start() have been made the same
number of media_entity_pipeline_stop() calls are required to stop streaming. The
media_entity pipe field is reset to NULL on the last nested stop call.
Link configuration will fail with -EBUSY by default if either end of the link is
a streaming entity. Links that can be modified while streaming must be marked
with the MEDIA_LNK_FL_DYNAMIC flag.
If other operations need to be disallowed on streaming entities (such as
changing entities configuration parameters) drivers can explicitly check the
media_entity stream_count field to find out if an entity is streaming. This
operation must be done with the media_device graph_mutex held.
Link validation
---------------
Link validation is performed by media_entity_pipeline_start() for any
entity which has sink pads in the pipeline. The
media_entity::link_validate() callback is used for that purpose. In
link_validate() callback, entity driver should check that the properties of
the source pad of the connected entity and its own sink pad match. It is up
to the type of the entity (and in the end, the properties of the hardware)
what matching actually means.
Subsystems should facilitate link validation by providing subsystem specific
helper functions to provide easy access for commonly needed information, and
in the end provide a way to use driver-specific callbacks.

12
Documentation/video4linux/v4l2-framework.txt
View File

@ -295,16 +295,16 @@ module owner. This is done for you if you use the i2c helper functions.
If integration with the media framework is needed, you must initialize the
media_entity struct embedded in the v4l2_subdev struct (entity field) by
calling media_entity_init():
calling media_entity_pads_init(), if the entity has pads:
struct media_pad *pads = &my_sd->pads;
int err;
err = media_entity_init(&sd->entity, npads, pads, 0);
err = media_entity_pads_init(&sd->entity, npads, pads);
The pads array must have been previously initialized. There is no need to
manually set the struct media_entity type and name fields, but the revision
field must be initialized if needed.
manually set the struct media_entity function and name fields, but the
revision field must be initialized if needed.
A reference to the entity will be automatically acquired/released when the
subdev device node (if any) is opened/closed.
@ -695,12 +695,12 @@ difference is that the inode argument is omitted since it is never used.
If integration with the media framework is needed, you must initialize the
media_entity struct embedded in the video_device struct (entity field) by
calling media_entity_init():
calling media_entity_pads_init():
struct media_pad *pad = &my_vdev->pad;
int err;
err = media_entity_init(&vdev->entity, 1, pad, 0);
err = media_entity_pads_init(&vdev->entity, 1, pad);
The pads array must have been previously initialized. There is no need to
manually set the struct media_entity type and name fields.

8
Documentation/zh_CN/video4linux/v4l2-framework.txt
View File

@ -289,13 +289,13 @@ struct v4l2_subdev_ops {
然后，你必须用一个唯一的名字初始化 subdev->name，并初始化模块的
owner 域。若使用 i2c 辅助函数，这些都会帮你处理好。
若需同媒体框架整合，你必须调用 media_entity_init() 初始化 v4l2_subdev
若需同媒体框架整合，你必须调用 media_entity_pads_init() 初始化 v4l2_subdev
结构体中的 media_entity 结构体（entity 域）：
struct media_pad *pads = &my_sd->pads;
int err;
err = media_entity_init(&sd->entity, npads, pads, 0);
err = media_entity_pads_init(&sd->entity, npads, pads);
pads 数组必须预先初始化。无须手动设置 media_entity 的 type 和
name 域，但如有必要，revision 域必须初始化。
@ -596,13 +596,13 @@ void v4l2_disable_ioctl(struct video_device *vdev, unsigned int cmd);
v4l2_file_operations 结构体是 file_operations 的一个子集。其主要
区别在于：因 inode 参数从未被使用，它将被忽略。
如果需要与媒体框架整合，你必须通过调用 media_entity_init() 初始化
如果需要与媒体框架整合，你必须通过调用 media_entity_pads_init() 初始化
嵌入在 video_device 结构体中的 media_entity（entity 域）结构体：
struct media_pad *pad = &my_vdev->pad;
int err;
err = media_entity_init(&vdev->entity, 1, pad, 0);
err = media_entity_pads_init(&vdev->entity, 1, pad);
pads 数组必须预先初始化。没有必要手动设置 media_entity 的 type 和
name 域。

1
drivers/media/Kconfig
View File

@ -97,7 +97,6 @@ config MEDIA_CONTROLLER
config MEDIA_CONTROLLER_DVB
bool "Enable Media controller for DVB (EXPERIMENTAL)"
depends on MEDIA_CONTROLLER
depends on BROKEN
---help---
Enable the media controller API support for DVB.

7
drivers/media/common/siano/smsdvb-main.c
View File

@ -617,6 +617,7 @@ static void smsdvb_media_device_unregister(struct smsdvb_client_t *client)
if (!coredev->media_dev)
return;
media_device_unregister(coredev->media_dev);
media_device_cleanup(coredev->media_dev);
kfree(coredev->media_dev);
coredev->media_dev = NULL;
#endif
@ -1183,7 +1184,11 @@ static int smsdvb_hotplug(struct smscore_device_t *coredev,
if (smsdvb_debugfs_create(client) < 0)
pr_info("failed to create debugfs node\n");
dvb_create_media_graph(&client->adapter);
rc = dvb_create_media_graph(&client->adapter, true);
if (rc < 0) {
pr_err("dvb_create_media_graph failed %d\n", rc);
goto client_error;
}
pr_info("DVB interface registered.\n");
return 0;

4
drivers/media/dvb-core/dmxdev.c
View File

@ -1244,9 +1244,9 @@ int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
}
dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev,
DVB_DEVICE_DEMUX);
DVB_DEVICE_DEMUX, dmxdev->filternum);
dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr,
dmxdev, DVB_DEVICE_DVR);
dmxdev, DVB_DEVICE_DVR, dmxdev->filternum);
dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192);

2
drivers/media/dvb-core/dvb_ca_en50221.c
View File

@ -1695,7 +1695,7 @@ int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter,
pubca->private = ca;
/* register the DVB device */
ret = dvb_register_device(dvb_adapter, &ca->dvbdev, &dvbdev_ca, ca, DVB_DEVICE_CA);
ret = dvb_register_device(dvb_adapter, &ca->dvbdev, &dvbdev_ca, ca, DVB_DEVICE_CA, 0);
if (ret)
goto free_slot_info;

11
drivers/media/dvb-core/dvb_frontend.c
View File

@ -622,7 +622,7 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
struct media_device *mdev = adapter->mdev;
struct media_entity *entity, *source;
struct media_link *link, *found_link = NULL;
int i, ret, n_links = 0, active_links = 0;
int ret, n_links = 0, active_links = 0;
fepriv->pipe_start_entity = NULL;
@ -632,8 +632,7 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
entity = fepriv->dvbdev->entity;
fepriv->pipe_start_entity = entity;
for (i = 0; i < entity->num_links; i++) {
link = &entity->links[i];
list_for_each_entry(link, &entity->links, list) {
if (link->sink->entity == entity) {
found_link = link;
n_links++;
@ -659,13 +658,11 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe)
source = found_link->source->entity;
fepriv->pipe_start_entity = source;
for (i = 0; i < source->num_links; i++) {
list_for_each_entry(link, &source->links, list) {
struct media_entity *sink;
int flags = 0;
link = &source->links[i];
sink = link->sink->entity;
if (sink == entity)
flags = MEDIA_LNK_FL_ENABLED;
@ -2762,7 +2759,7 @@ int dvb_register_frontend(struct dvb_adapter* dvb,
fe->dvb->num, fe->id, fe->ops.info.name);
dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template,
fe, DVB_DEVICE_FRONTEND);
fe, DVB_DEVICE_FRONTEND, 0);
/*
* Initialize the cache to the proper values according with the

2
drivers/media/dvb-core/dvb_net.c
View File

@ -1502,6 +1502,6 @@ int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet,
dvbnet->state[i] = 0;
return dvb_register_device(adap, &dvbnet->dvbdev, &dvbdev_net,
dvbnet, DVB_DEVICE_NET);
dvbnet, DVB_DEVICE_NET, 0);
}
EXPORT_SYMBOL(dvb_net_init);

496
drivers/media/dvb-core/dvbdev.c
View File

@ -34,6 +34,9 @@
#include <linux/mutex.h>
#include "dvbdev.h"
/* Due to enum tuner_pad_index */
#include <media/tuner.h>
static DEFINE_MUTEX(dvbdev_mutex);
static int dvbdev_debug;
@ -180,102 +183,255 @@ skip:
return -ENFILE;
}
static void dvb_register_media_device(struct dvb_device *dvbdev,
int type, int minor)
static void dvb_media_device_free(struct dvb_device *dvbdev)
{
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
int ret = 0, npads;
if (dvbdev->entity) {
media_device_unregister_entity(dvbdev->entity);
kfree(dvbdev->entity);
kfree(dvbdev->pads);
dvbdev->entity = NULL;
dvbdev->pads = NULL;
}
if (!dvbdev->adapter->mdev)
return;
if (dvbdev->tsout_entity) {
int i;
dvbdev->entity = kzalloc(sizeof(*dvbdev->entity), GFP_KERNEL);
if (!dvbdev->entity)
return;
for (i = 0; i < dvbdev->tsout_num_entities; i++) {
media_device_unregister_entity(&dvbdev->tsout_entity[i]);
kfree(dvbdev->tsout_entity[i].name);
}
kfree(dvbdev->tsout_entity);
kfree(dvbdev->tsout_pads);
dvbdev->tsout_entity = NULL;
dvbdev->tsout_pads = NULL;
dvbdev->entity->info.dev.major = DVB_MAJOR;
dvbdev->entity->info.dev.minor = minor;
dvbdev->entity->name = dvbdev->name;
dvbdev->tsout_num_entities = 0;
}
if (dvbdev->intf_devnode) {
media_devnode_remove(dvbdev->intf_devnode);
dvbdev->intf_devnode = NULL;
}
if (dvbdev->adapter->conn) {
media_device_unregister_entity(dvbdev->adapter->conn);
dvbdev->adapter->conn = NULL;
kfree(dvbdev->adapter->conn_pads);
dvbdev->adapter->conn_pads = NULL;
}
#endif
}
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
static int dvb_create_tsout_entity(struct dvb_device *dvbdev,
const char *name, int npads)
{
int i, ret = 0;
dvbdev->tsout_pads = kcalloc(npads, sizeof(*dvbdev->tsout_pads),
GFP_KERNEL);
if (!dvbdev->tsout_pads)
return -ENOMEM;
dvbdev->tsout_entity = kcalloc(npads, sizeof(*dvbdev->tsout_entity),
GFP_KERNEL);
if (!dvbdev->tsout_entity)
return -ENOMEM;
dvbdev->tsout_num_entities = npads;
for (i = 0; i < npads; i++) {
struct media_pad *pads = &dvbdev->tsout_pads[i];
struct media_entity *entity = &dvbdev->tsout_entity[i];
entity->name = kasprintf(GFP_KERNEL, "%s #%d", name, i);
if (!entity->name)
return -ENOMEM;
entity->function = MEDIA_ENT_F_IO_DTV;
pads->flags = MEDIA_PAD_FL_SINK;
ret = media_entity_pads_init(entity, 1, pads);
if (ret < 0)
return ret;
ret = media_device_register_entity(dvbdev->adapter->mdev,
entity);
if (ret < 0)
return ret;
}
return 0;
}
#define DEMUX_TSOUT "demux-tsout"
#define DVR_TSOUT "dvr-tsout"
static int dvb_create_media_entity(struct dvb_device *dvbdev,
int type, int demux_sink_pads)
{
int i, ret, npads;
switch (type) {
case DVB_DEVICE_CA:
case DVB_DEVICE_DEMUX:
case DVB_DEVICE_FRONTEND:
npads = 2;
break;
case DVB_DEVICE_NET:
npads = 0;
case DVB_DEVICE_DVR:
ret = dvb_create_tsout_entity(dvbdev, DVR_TSOUT,
demux_sink_pads);
return ret;
case DVB_DEVICE_DEMUX:
npads = 1 + demux_sink_pads;
ret = dvb_create_tsout_entity(dvbdev, DEMUX_TSOUT,
demux_sink_pads);
if (ret < 0)
return ret;
break;
case DVB_DEVICE_CA:
npads = 2;
break;
case DVB_DEVICE_NET:
/*
* We should be creating entities for the MPE/ULE
* decapsulation hardware (or software implementation).
*
* However, the number of for the MPE/ULE decaps may not be
* fixed. As we don't have yet dynamic support for PADs at
* the Media Controller, let's not create the decap
* entities yet.
*/
return 0;
default:
npads = 1;
return 0;
}
dvbdev->entity = kzalloc(sizeof(*dvbdev->entity), GFP_KERNEL);
if (!dvbdev->entity)
return -ENOMEM;
dvbdev->entity->name = dvbdev->name;
if (npads) {
dvbdev->pads = kcalloc(npads, sizeof(*dvbdev->pads),
GFP_KERNEL);
if (!dvbdev->pads) {
kfree(dvbdev->entity);
return;
}
if (!dvbdev->pads)
return -ENOMEM;
}
switch (type) {
case DVB_DEVICE_FRONTEND:
dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_FE;
dvbdev->entity->function = MEDIA_ENT_F_DTV_DEMOD;
dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK;
dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE;
break;
case DVB_DEVICE_DEMUX:
dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_DEMUX;
dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK;
dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE;
break;
case DVB_DEVICE_DVR:
dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_DVR;
dvbdev->entity->function = MEDIA_ENT_F_TS_DEMUX;
dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK;
for (i = 1; i < npads; i++)
dvbdev->pads[i].flags = MEDIA_PAD_FL_SOURCE;
break;
case DVB_DEVICE_CA:
dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_CA;
dvbdev->entity->function = MEDIA_ENT_F_DTV_CA;
dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK;
dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE;
break;
default:
/* Should never happen, as the first switch prevents it */
kfree(dvbdev->entity);
kfree(dvbdev->pads);
dvbdev->entity = NULL;
dvbdev->pads = NULL;
return 0;
}
if (npads) {
ret = media_entity_pads_init(dvbdev->entity, npads, dvbdev->pads);
if (ret)
return ret;
}
ret = media_device_register_entity(dvbdev->adapter->mdev,
dvbdev->entity);
if (ret)
return (ret);
printk(KERN_DEBUG "%s: media entity '%s' registered.\n",
__func__, dvbdev->entity->name);
return 0;
}
#endif
static int dvb_register_media_device(struct dvb_device *dvbdev,
int type, int minor,
unsigned demux_sink_pads)
{
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
struct media_link *link;
u32 intf_type;
int ret;
if (!dvbdev->adapter->mdev)
return 0;
ret = dvb_create_media_entity(dvbdev, type, demux_sink_pads);
if (ret)
return ret;
switch (type) {
case DVB_DEVICE_FRONTEND:
intf_type = MEDIA_INTF_T_DVB_FE;
break;
case DVB_DEVICE_DEMUX:
intf_type = MEDIA_INTF_T_DVB_DEMUX;
break;
case DVB_DEVICE_DVR:
intf_type = MEDIA_INTF_T_DVB_DVR;
break;
case DVB_DEVICE_CA:
intf_type = MEDIA_INTF_T_DVB_CA;
break;
case DVB_DEVICE_NET:
dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_NET;
intf_type = MEDIA_INTF_T_DVB_NET;
break;
default:
kfree(dvbdev->entity);
dvbdev->entity = NULL;
return;
return 0;
}
if (npads)
ret = media_entity_init(dvbdev->entity, npads, dvbdev->pads, 0);
if (!ret)
ret = media_device_register_entity(dvbdev->adapter->mdev,
dvbdev->entity);
if (ret < 0) {
printk(KERN_ERR
"%s: media_device_register_entity failed for %s\n",
__func__, dvbdev->entity->name);
kfree(dvbdev->pads);
kfree(dvbdev->entity);
dvbdev->entity = NULL;
return;
}
dvbdev->intf_devnode = media_devnode_create(dvbdev->adapter->mdev,
intf_type, 0,
DVB_MAJOR, minor);
printk(KERN_DEBUG "%s: media device '%s' registered.\n",
__func__, dvbdev->entity->name);
if (!dvbdev->intf_devnode)
return -ENOMEM;
/*
* Create the "obvious" link, e. g. the ones that represent
* a direct association between an interface and an entity.
* Other links should be created elsewhere, like:
* DVB FE intf -> tuner
* DVB demux intf -> dvr
*/
if (!dvbdev->entity)
return 0;
link = media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf,
MEDIA_LNK_FL_ENABLED);
if (!link)
return -ENOMEM;
#endif
return 0;
}
int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
const struct dvb_device *template, void *priv, int type)
const struct dvb_device *template, void *priv, int type,
int demux_sink_pads)
{
struct dvb_device *dvbdev;
struct file_operations *dvbdevfops;
struct device *clsdev;
int minor;
int id;
int id, ret;
mutex_lock(&dvbdev_register_lock);
@ -286,7 +442,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
return -ENFILE;
}
*pdvbdev = dvbdev = kmalloc(sizeof(struct dvb_device), GFP_KERNEL);
*pdvbdev = dvbdev = kzalloc(sizeof(*dvbdev), GFP_KERNEL);
if (!dvbdev){
mutex_unlock(&dvbdev_register_lock);
@ -335,6 +491,20 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
dvb_minors[minor] = dvbdev;
up_write(&minor_rwsem);
ret = dvb_register_media_device(dvbdev, type, minor, demux_sink_pads);
if (ret) {
printk(KERN_ERR
"%s: dvb_register_media_device failed to create the mediagraph\n",
__func__);
dvb_media_device_free(dvbdev);
kfree(dvbdevfops);
kfree(dvbdev);
up_write(&minor_rwsem);
mutex_unlock(&dvbdev_register_lock);
return ret;
}
mutex_unlock(&dvbdev_register_lock);
clsdev = device_create(dvb_class, adap->device,
@ -348,8 +518,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
dprintk(KERN_DEBUG "DVB: register adapter%d/%s%d @ minor: %i (0x%02x)\n",
adap->num, dnames[type], id, minor, minor);
dvb_register_media_device(dvbdev, type, minor);
return 0;
}
EXPORT_SYMBOL(dvb_register_device);
@ -364,15 +532,9 @@ void dvb_unregister_device(struct dvb_device *dvbdev)
dvb_minors[dvbdev->minor] = NULL;
up_write(&minor_rwsem);
device_destroy(dvb_class, MKDEV(DVB_MAJOR, dvbdev->minor));
dvb_media_device_free(dvbdev);
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
if (dvbdev->entity) {
media_device_unregister_entity(dvbdev->entity);
kfree(dvbdev->entity);
kfree(dvbdev->pads);
}
#endif
device_destroy(dvb_class, MKDEV(DVB_MAJOR, dvbdev->minor));
list_del (&dvbdev->list_head);
kfree (dvbdev->fops);
@ -382,46 +544,212 @@ EXPORT_SYMBOL(dvb_unregister_device);
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
void dvb_create_media_graph(struct dvb_adapter *adap)
static int dvb_create_io_intf_links(struct dvb_adapter *adap,
struct media_interface *intf,
char *name)
{
struct media_device *mdev = adap->mdev;
struct media_entity *entity, *tuner = NULL, *fe = NULL;
struct media_entity *demux = NULL, *dvr = NULL, *ca = NULL;
if (!mdev)
return;
struct media_entity *entity;
struct media_link *link;
media_device_for_each_entity(entity, mdev) {
switch (entity->type) {
case MEDIA_ENT_T_V4L2_SUBDEV_TUNER:
if (entity->function == MEDIA_ENT_F_IO_DTV) {
if (strncmp(entity->name, name, strlen(name)))
continue;
link = media_create_intf_link(entity, intf,
MEDIA_LNK_FL_ENABLED);
if (!link)
return -ENOMEM;
}
}
return 0;
}
int dvb_create_media_graph(struct dvb_adapter *adap,
bool create_rf_connector)
{
struct media_device *mdev = adap->mdev;
struct media_entity *entity, *tuner = NULL, *demod = NULL, *conn;
struct media_entity *demux = NULL, *ca = NULL;
struct media_link *link;
struct media_interface *intf;
unsigned demux_pad = 0;
unsigned dvr_pad = 0;
unsigned ntuner = 0, ndemod = 0;
int ret;
static const char *connector_name = "Television";
if (!mdev)
return 0;
media_device_for_each_entity(entity, mdev) {
switch (entity->function) {
case MEDIA_ENT_F_TUNER:
tuner = entity;
ntuner++;
break;
case MEDIA_ENT_T_DEVNODE_DVB_FE:
fe = entity;
case MEDIA_ENT_F_DTV_DEMOD:
demod = entity;
ndemod++;
break;
case MEDIA_ENT_T_DEVNODE_DVB_DEMUX:
case MEDIA_ENT_F_TS_DEMUX:
demux = entity;
break;
case MEDIA_ENT_T_DEVNODE_DVB_DVR:
dvr = entity;
break;
case MEDIA_ENT_T_DEVNODE_DVB_CA:
case MEDIA_ENT_F_DTV_CA:
ca = entity;
break;
}
}
if (tuner && fe)
media_entity_create_link(tuner, 0, fe, 0, 0);
/*
* Prepare to signalize to media_create_pad_links() that multiple
* entities of the same type exists and a 1:n or n:1 links need to be
* created.
* NOTE: if both tuner and demod have multiple instances, it is up
* to the caller driver to create such links.
*/
if (ntuner > 1)
tuner = NULL;
if (ndemod > 1)
demod = NULL;
if (fe && demux)
media_entity_create_link(fe, 1, demux, 0, MEDIA_LNK_FL_ENABLED);
if (create_rf_connector) {
conn = kzalloc(sizeof(*conn), GFP_KERNEL);
if (!conn)
return -ENOMEM;
adap->conn = conn;
if (demux && dvr)
media_entity_create_link(demux, 1, dvr, 0, MEDIA_LNK_FL_ENABLED);
adap->conn_pads = kcalloc(1, sizeof(*adap->conn_pads),
GFP_KERNEL);
if (!adap->conn_pads)
return -ENOMEM;
if (demux && ca)
media_entity_create_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED);
conn->flags = MEDIA_ENT_FL_CONNECTOR;
conn->function = MEDIA_ENT_F_CONN_RF;
conn->name = connector_name;
adap->conn_pads->flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(conn, 1, adap->conn_pads);
if (ret)
return ret;
ret = media_device_register_entity(mdev, conn);
if (ret)
return ret;
if (!ntuner)
ret = media_create_pad_links(mdev,
MEDIA_ENT_F_CONN_RF,
conn, 0,
MEDIA_ENT_F_DTV_DEMOD,
demod, 0,
MEDIA_LNK_FL_ENABLED,
false);
else
ret = media_create_pad_links(mdev,
MEDIA_ENT_F_CONN_RF,
conn, 0,
MEDIA_ENT_F_TUNER,
tuner, TUNER_PAD_RF_INPUT,
MEDIA_LNK_FL_ENABLED,
false);
if (ret)
return ret;
}
if (ntuner && ndemod) {
ret = media_create_pad_links(mdev,
MEDIA_ENT_F_TUNER,
tuner, TUNER_PAD_IF_OUTPUT,
MEDIA_ENT_F_DTV_DEMOD,
demod, 0, MEDIA_LNK_FL_ENABLED,
false);
if (ret)
return ret;
}
if (ndemod && demux) {
ret = media_create_pad_links(mdev,
MEDIA_ENT_F_DTV_DEMOD,
demod, 1,
MEDIA_ENT_F_TS_DEMUX,
demux, 0, MEDIA_LNK_FL_ENABLED,
false);
if (ret)
return -ENOMEM;
}
if (demux && ca) {
ret = media_create_pad_link(demux, 1, ca,
0, MEDIA_LNK_FL_ENABLED);
if (!ret)
return -ENOMEM;
}
/* Create demux links for each ringbuffer/pad */
if (demux) {
media_device_for_each_entity(entity, mdev) {
if (entity->function == MEDIA_ENT_F_IO_DTV) {
if (!strncmp(entity->name, DVR_TSOUT,
strlen(DVR_TSOUT))) {
ret = media_create_pad_link(demux,
++dvr_pad,
entity, 0, 0);
if (ret)
return ret;
}
if (!strncmp(entity->name, DEMUX_TSOUT,
strlen(DEMUX_TSOUT))) {
ret = media_create_pad_link(demux,
++demux_pad,
entity, 0, 0);
if (ret)
return ret;
}
}
}
}
/* Create interface links for FE->tuner, DVR->demux and CA->ca */
media_device_for_each_intf(intf, mdev) {
if (intf->type == MEDIA_INTF_T_DVB_CA && ca) {
link = media_create_intf_link(ca, intf,
MEDIA_LNK_FL_ENABLED);
if (!link)
return -ENOMEM;
}
if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) {
link = media_create_intf_link(tuner, intf,
MEDIA_LNK_FL_ENABLED);
if (!link)
return -ENOMEM;
}
#if 0
/*
* Indirect link - let's not create yet, as we don't know how
* to handle indirect links, nor if this will
* actually be needed.
*/
if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) {
link = media_create_intf_link(demux, intf,
MEDIA_LNK_FL_ENABLED);
if (!link)
return -ENOMEM;
}
#endif
if (intf->type == MEDIA_INTF_T_DVB_DVR) {
ret = dvb_create_io_intf_links(adap, intf, DVR_TSOUT);
if (ret)
return ret;
}
if (intf->type == MEDIA_INTF_T_DVB_DEMUX) {
ret = dvb_create_io_intf_links(adap, intf, DEMUX_TSOUT);
if (ret)
return ret;
}
}
return 0;
}
EXPORT_SYMBOL_GPL(dvb_create_media_graph);
#endif

58
drivers/media/dvb-core/dvbdev.h
View File

@ -75,6 +75,9 @@ struct dvb_frontend;
* used.
* @mdev: pointer to struct media_device, used when the media
* controller is used.
* @conn: RF connector. Used only if the device has no separate
* tuner.
* @conn_pads: pointer to struct media_pad associated with @conn;
*/
struct dvb_adapter {
int num;
@ -94,6 +97,8 @@ struct dvb_adapter {
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
struct media_device *mdev;
struct media_entity *conn;
struct media_pad *conn_pads;
#endif
};
@ -120,6 +125,11 @@ struct dvb_adapter {
* @entity: pointer to struct media_entity associated with the device node
* @pads: pointer to struct media_pad associated with @entity;
* @priv: private data
* @intf_devnode: Pointer to media_intf_devnode. Used by the dvbdev core to
* store the MC device node interface
* @tsout_num_entities: Number of Transport Stream output entities
* @tsout_entity: array with MC entities associated to each TS output node
* @tsout_pads: array with the source pads for each @tsout_entity
*
* This structure is used by the DVB core (frontend, CA, net, demux) in
* order to create the device nodes. Usually, driver should not initialize
@ -148,8 +158,11 @@ struct dvb_device {
const char *name;
/* Allocated and filled inside dvbdev.c */
struct media_entity *entity;
struct media_pad *pads;
struct media_intf_devnode *intf_devnode;
unsigned tsout_num_entities;
struct media_entity *entity, *tsout_entity;
struct media_pad *pads, *tsout_pads;
#endif
void *priv;
@ -185,14 +198,18 @@ int dvb_unregister_adapter(struct dvb_adapter *adap);
* stored
* @template: Template used to create &pdvbdev;
* @priv: private data
* @type: type of the device: DVB_DEVICE_SEC, DVB_DEVICE_FRONTEND,
* DVB_DEVICE_DEMUX, DVB_DEVICE_DVR, DVB_DEVICE_CA, DVB_DEVICE_NET
* @type: type of the device: %DVB_DEVICE_SEC, %DVB_DEVICE_FRONTEND,
* %DVB_DEVICE_DEMUX, %DVB_DEVICE_DVR, %DVB_DEVICE_CA,
* %DVB_DEVICE_NET
* @demux_sink_pads: Number of demux outputs, to be used to create the TS
* outputs via the Media Controller.
*/
int dvb_register_device(struct dvb_adapter *adap,
struct dvb_device **pdvbdev,
const struct dvb_device *template,
void *priv,
int type);
int type,
int demux_sink_pads);
/**
* dvb_unregister_device - Unregisters a DVB device
@ -202,16 +219,43 @@ int dvb_register_device(struct dvb_adapter *adap,
void dvb_unregister_device(struct dvb_device *dvbdev);
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
void dvb_create_media_graph(struct dvb_adapter *adap);
/**
* dvb_create_media_graph - Creates media graph for the Digital TV part of the
* device.
*
* @adap: pointer to struct dvb_adapter
* @create_rf_connector: if true, it creates the RF connector too
*
* This function checks all DVB-related functions at the media controller
* entities and creates the needed links for the media graph. It is
* capable of working with multiple tuners or multiple frontends, but it
* won't create links if the device has multiple tuners and multiple frontends
* or if the device has multiple muxes. In such case, the caller driver should
* manually create the remaining links.
*/
__must_check int dvb_create_media_graph(struct dvb_adapter *adap,
bool create_rf_connector);
static inline void dvb_register_media_controller(struct dvb_adapter *adap,
struct media_device *mdev)
{
adap->mdev = mdev;
}
static inline struct media_device
*dvb_get_media_controller(struct dvb_adapter *adap)
{
return adap->mdev;
}
#else
static inline void dvb_create_media_graph(struct dvb_adapter *adap) {}
static inline
int dvb_create_media_graph(struct dvb_adapter *adap,
bool create_rf_connector)
{
return 0;
};
#define dvb_register_media_controller(a, b) {}
#define dvb_get_media_controller(a) NULL
#endif
int dvb_generic_open (struct inode *inode, struct file *file);

17
drivers/media/dvb-frontends/au8522_decoder.c
View File

@ -730,6 +730,9 @@ static int au8522_probe(struct i2c_client *client,
struct v4l2_ctrl_handler *hdl;
struct v4l2_subdev *sd;
int instance;
#ifdef CONFIG_MEDIA_CONTROLLER
int ret;
#endif
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter,
@ -758,6 +761,20 @@ static int au8522_probe(struct i2c_client *client,
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &au8522_ops);
#if defined(CONFIG_MEDIA_CONTROLLER)
state->pads[AU8522_PAD_INPUT].flags = MEDIA_PAD_FL_SINK;
state->pads[AU8522_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;
state->pads[AU8522_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_ATV_DECODER;
ret = media_entity_pads_init(&sd->entity, ARRAY_SIZE(state->pads),
state->pads);
if (ret < 0) {
v4l_info(client, "failed to initialize media entity!\n");
return ret;
}
#endif
hdl = &state->hdl;
v4l2_ctrl_handler_init(hdl, 4);

12
drivers/media/dvb-frontends/au8522_priv.h
View File

@ -39,6 +39,14 @@
#define AU8522_DIGITAL_MODE 1
#define AU8522_SUSPEND_MODE 2
enum au8522_media_pads {
AU8522_PAD_INPUT,
AU8522_PAD_VID_OUT,
AU8522_PAD_VBI_OUT,
AU8522_NUM_PADS
};
struct au8522_state {
struct i2c_client *c;
struct i2c_adapter *i2c;
@ -68,6 +76,10 @@ struct au8522_state {
u32 id;
u32 rev;
struct v4l2_ctrl_handler hdl;
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_pad pads[AU8522_NUM_PADS];
#endif
};
/* These are routines shared by both the VSB/QAM demodulator and the analog

2
drivers/media/firewire/firedtv-ci.c
View File

@ -241,7 +241,7 @@ int fdtv_ca_register(struct firedtv *fdtv)
return -EFAULT;
err = dvb_register_device(&fdtv->adapter, &fdtv->cadev,
&fdtv_ca, fdtv, DVB_DEVICE_CA);
&fdtv_ca, fdtv, DVB_DEVICE_CA, 0);
if (stat.ca_application_info == 0)
dev_err(fdtv->device, "CaApplicationInfo is not set\n");

2
drivers/media/i2c/ad9389b.c
View File

@ -1158,7 +1158,7 @@ static int ad9389b_probe(struct i2c_client *client, const struct i2c_device_id *
state->rgb_quantization_range_ctrl->is_private = true;
state->pad.flags = MEDIA_PAD_FL_SINK;
err = media_entity_init(&sd->entity, 1, &state->pad, 0);
err = media_entity_pads_init(&sd->entity, 1, &state->pad);
if (err)
goto err_hdl;

4
drivers/media/i2c/adp1653.c
View File

@ -512,11 +512,11 @@ static int adp1653_probe(struct i2c_client *client,
if (ret)
goto free_and_quit;
ret = media_entity_init(&flash->subdev.entity, 0, NULL, 0);
ret = media_entity_pads_init(&flash->subdev.entity, 0, NULL);
if (ret < 0)
goto free_and_quit;
flash->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
flash->subdev.entity.function = MEDIA_ENT_F_FLASH;
return 0;

4
drivers/media/i2c/adv7180.c
View File

@ -1213,8 +1213,8 @@ static int adv7180_probe(struct i2c_client *client,
goto err_unregister_vpp_client;
state->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
ret = media_entity_init(&sd->entity, 1, &state->pad, 0);
sd->entity.flags |= MEDIA_ENT_F_ATV_DECODER;
ret = media_entity_pads_init(&sd->entity, 1, &state->pad);
if (ret)
goto err_free_ctrl;

2
drivers/media/i2c/adv7511.c
View File

@ -1482,7 +1482,7 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *
state->rgb_quantization_range_ctrl->is_private = true;
state->pad.flags = MEDIA_PAD_FL_SINK;
err = media_entity_init(&sd->entity, 1, &state->pad, 0);
err = media_entity_pads_init(&sd->entity, 1, &state->pad);
if (err)
goto err_hdl;

4
drivers/media/i2c/adv7604.c
View File

@ -3208,8 +3208,8 @@ static int adv76xx_probe(struct i2c_client *client,
state->pads[i].flags = MEDIA_PAD_FL_SINK;
state->pads[state->source_pad].flags = MEDIA_PAD_FL_SOURCE;
err = media_entity_init(&sd->entity, state->source_pad + 1,
state->pads, 0);
err = media_entity_pads_init(&sd->entity, state->source_pad + 1,
state->pads);
if (err)
goto err_work_queues;

2
drivers/media/i2c/adv7842.c
View File

@ -3309,7 +3309,7 @@ static int adv7842_probe(struct i2c_client *client,
adv7842_delayed_work_enable_hotplug);
state->pad.flags = MEDIA_PAD_FL_SOURCE;
err = media_entity_init(&sd->entity, 1, &state->pad, 0);
err = media_entity_pads_init(&sd->entity, 1, &state->pad);
if (err)
goto err_work_queues;

4
drivers/media/i2c/as3645a.c
View File

@ -827,11 +827,11 @@ static int as3645a_probe(struct i2c_client *client,
if (ret < 0)
goto done;
ret = media_entity_init(&flash->subdev.entity, 0, NULL, 0);
ret = media_entity_pads_init(&flash->subdev.entity, 0, NULL);
if (ret < 0)
goto done;
flash->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
flash->subdev.entity.function = MEDIA_ENT_F_FLASH;
mutex_init(&flash->power_lock);

6
drivers/media/i2c/cx25840/cx25840-core.c
View File

@ -5211,10 +5211,10 @@ static int cx25840_probe(struct i2c_client *client,
state->pads[CX25840_PAD_INPUT].flags = MEDIA_PAD_FL_SINK;
state->pads[CX25840_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;
state->pads[CX25840_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
sd->entity.function = MEDIA_ENT_F_ATV_DECODER;
ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads),
state->pads, 0);
ret = media_entity_pads_init(&sd->entity, ARRAY_SIZE(state->pads),
state->pads);
if (ret < 0) {
v4l_info(client, "failed to initialize media entity!\n");
return ret;

4
drivers/media/i2c/lm3560.c
View File

@ -365,10 +365,10 @@ static int lm3560_subdev_init(struct lm3560_flash *flash,
rval = lm3560_init_controls(flash, led_no);
if (rval)
goto err_out;
rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL, 0);
rval = media_entity_pads_init(&flash->subdev_led[led_no].entity, 0, NULL);
if (rval < 0)
goto err_out;
flash->subdev_led[led_no].entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
flash->subdev_led[led_no].entity.function = MEDIA_ENT_F_FLASH;
return rval;

4
drivers/media/i2c/lm3646.c
View File

@ -282,10 +282,10 @@ static int lm3646_subdev_init(struct lm3646_flash *flash)
rval = lm3646_init_controls(flash);
if (rval)
goto err_out;
rval = media_entity_init(&flash->subdev_led.entity, 0, NULL, 0);
rval = media_entity_pads_init(&flash->subdev_led.entity, 0, NULL);
if (rval < 0)
goto err_out;
flash->subdev_led.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
flash->subdev_led.entity.function = MEDIA_ENT_F_FLASH;
return rval;
err_out:

4
drivers/media/i2c/m5mols/m5mols_core.c
View File

@ -975,10 +975,10 @@ static int m5mols_probe(struct i2c_client *client,
sd->internal_ops = &m5mols_subdev_internal_ops;
info->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
ret = media_entity_pads_init(&sd->entity, 1, &info->pad);
if (ret < 0)
return ret;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
init_waitqueue_head(&info->irq_waitq);
mutex_init(&info->lock);

2
drivers/media/i2c/mt9m032.c
View File

@ -799,7 +799,7 @@ static int mt9m032_probe(struct i2c_client *client,
sensor->subdev.ctrl_handler = &sensor->ctrls;
sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sensor->subdev.entity, 1, &sensor->pad, 0);
ret = media_entity_pads_init(&sensor->subdev.entity, 1, &sensor->pad);
if (ret < 0)
goto error_ctrl;

2
drivers/media/i2c/mt9p031.c
View File

@ -1112,7 +1112,7 @@ static int mt9p031_probe(struct i2c_client *client,
mt9p031->subdev.internal_ops = &mt9p031_subdev_internal_ops;
mt9p031->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad, 0);
ret = media_entity_pads_init(&mt9p031->subdev.entity, 1, &mt9p031->pad);
if (ret < 0)
goto done;

2
drivers/media/i2c/mt9t001.c
View File

@ -933,7 +933,7 @@ static int mt9t001_probe(struct i2c_client *client,
mt9t001->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
mt9t001->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&mt9t001->subdev.entity, 1, &mt9t001->pad, 0);
ret = media_entity_pads_init(&mt9t001->subdev.entity, 1, &mt9t001->pad);
done:
if (ret < 0) {

2
drivers/media/i2c/mt9v032.c
View File

@ -1046,7 +1046,7 @@ static int mt9v032_probe(struct i2c_client *client,
mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad, 0);
ret = media_entity_pads_init(&mt9v032->subdev.entity, 1, &mt9v032->pad);
if (ret < 0)
goto err;

4
drivers/media/i2c/noon010pc30.c
View File

@ -779,8 +779,8 @@ static int noon010_probe(struct i2c_client *client,
goto np_err;
info->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
ret = media_entity_init(&sd->entity, 1, &info->pad, 0);
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &info->pad);
if (ret < 0)
goto np_err;

4
drivers/media/i2c/ov2659.c
View File

@ -1445,8 +1445,8 @@ static int ov2659_probe(struct i2c_client *client,
#if defined(CONFIG_MEDIA_CONTROLLER)
ov2659->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
ret = media_entity_init(&sd->entity, 1, &ov2659->pad, 0);
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &ov2659->pad);
if (ret < 0) {
v4l2_ctrl_handler_free(&ov2659->ctrls);
return ret;

4
drivers/media/i2c/ov9650.c
View File

@ -1500,8 +1500,8 @@ static int ov965x_probe(struct i2c_client *client,
return ret;
ov965x->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
ret = media_entity_init(&sd->entity, 1, &ov965x->pad, 0);
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &ov965x->pad);
if (ret < 0)
return ret;

16
drivers/media/i2c/s5c73m3/s5c73m3-core.c
View File

@ -1482,11 +1482,11 @@ static int s5c73m3_oif_registered(struct v4l2_subdev *sd)
return ret;
}
ret = media_entity_create_link(&state->sensor_sd.entity,
ret = media_create_pad_link(&state->sensor_sd.entity,
S5C73M3_ISP_PAD, &state->oif_sd.entity, OIF_ISP_PAD,
MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
ret = media_entity_create_link(&state->sensor_sd.entity,
ret = media_create_pad_link(&state->sensor_sd.entity,
S5C73M3_JPEG_PAD, &state->oif_sd.entity, OIF_JPEG_PAD,
MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED);
@ -1688,10 +1688,10 @@ static int s5c73m3_probe(struct i2c_client *client,
state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE;
state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS,
state->sensor_pads, 0);
ret = media_entity_pads_init(&sd->entity, S5C73M3_NUM_PADS,
state->sensor_pads);
if (ret < 0)
return ret;
@ -1704,10 +1704,10 @@ static int s5c73m3_probe(struct i2c_client *client,
state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK;
state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK;
state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE;
oif_sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
oif_sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN;
ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS,
state->oif_pads, 0);
ret = media_entity_pads_init(&oif_sd->entity, OIF_NUM_PADS,
state->oif_pads);
if (ret < 0)
return ret;

4
drivers/media/i2c/s5k4ecgx.c
View File

@ -961,8 +961,8 @@ static int s5k4ecgx_probe(struct i2c_client *client,
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
priv->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
ret = media_entity_init(&sd->entity, 1, &priv->pad, 0);
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &priv->pad);
if (ret)
return ret;

12
drivers/media/i2c/s5k5baf.c
View File

@ -408,7 +408,7 @@ static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
static inline bool s5k5baf_is_cis_subdev(struct v4l2_subdev *sd)
{
return sd->entity.type == MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
return sd->entity.function == MEDIA_ENT_F_CAM_SENSOR;
}
static inline struct s5k5baf *to_s5k5baf(struct v4l2_subdev *sd)
@ -1756,7 +1756,7 @@ static int s5k5baf_registered(struct v4l2_subdev *sd)
v4l2_err(sd, "failed to register subdev %s\n",
state->cis_sd.name);
else
ret = media_entity_create_link(&state->cis_sd.entity, PAD_CIS,
ret = media_create_pad_link(&state->cis_sd.entity, PAD_CIS,
&state->sd.entity, PAD_CIS,
MEDIA_LNK_FL_IMMUTABLE |
MEDIA_LNK_FL_ENABLED);
@ -1904,8 +1904,8 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state,
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
state->cis_pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad, 0);
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad);
if (ret < 0)
goto err;
@ -1919,8 +1919,8 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state,
state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK;
state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads, 0);
sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN;
ret = media_entity_pads_init(&sd->entity, NUM_ISP_PADS, state->pads);
if (!ret)
return 0;

2
drivers/media/i2c/s5k6a3.c
View File

@ -333,7 +333,7 @@ static int s5k6a3_probe(struct i2c_client *client,
sensor->format.height = S5K6A3_DEFAULT_HEIGHT;
sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, 1, &sensor->pad, 0);
ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad);
if (ret < 0)
return ret;

4
drivers/media/i2c/s5k6aa.c
View File

@ -1577,8 +1577,8 @@ static int s5k6aa_probe(struct i2c_client *client,
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad, 0);
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &s5k6aa->pad);
if (ret)
return ret;

36
drivers/media/i2c/smiapp/smiapp-core.c
View File

@ -2487,23 +2487,11 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor)
if (!last)
continue;
rval = media_entity_init(&this->sd.entity,
this->npads, this->pads, 0);
rval = media_entity_pads_init(&this->sd.entity,
this->npads, this->pads);
if (rval) {
dev_err(&client->dev,
"media_entity_init failed\n");
return rval;
}
rval = media_entity_create_link(&this->sd.entity,
this->source_pad,
&last->sd.entity,
last->sink_pad,
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (rval) {
dev_err(&client->dev,
"media_entity_create_link failed\n");
"media_entity_pads_init failed\n");
return rval;
}
@ -2514,6 +2502,18 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor)
"v4l2_device_register_subdev failed\n");
return rval;
}
rval = media_create_pad_link(&this->sd.entity,
this->source_pad,
&last->sd.entity,
last->sink_pad,
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (rval) {
dev_err(&client->dev,
"media_create_pad_link failed\n");
return rval;
}
}
return 0;
@ -2763,7 +2763,7 @@ static int smiapp_init(struct smiapp_sensor *sensor)
dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile);
sensor->pixel_array->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
sensor->pixel_array->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
/* final steps */
smiapp_read_frame_fmt(sensor);
@ -3077,8 +3077,8 @@ static int smiapp_probe(struct i2c_client *client,
sensor->src->sensor = sensor;
sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE;
rval = media_entity_init(&sensor->src->sd.entity, 2,
sensor->src->pads, 0);
rval = media_entity_pads_init(&sensor->src->sd.entity, 2,
sensor->src->pads);
if (rval < 0)
return rval;

2
drivers/media/i2c/tc358743.c
View File

@ -1889,7 +1889,7 @@ static int tc358743_probe(struct i2c_client *client,
}
state->pad.flags = MEDIA_PAD_FL_SOURCE;
err = media_entity_init(&sd->entity, 1, &state->pad, 0);
err = media_entity_pads_init(&sd->entity, 1, &state->pad);
if (err < 0)
goto err_hdl;

4
drivers/media/i2c/tvp514x.c
View File

@ -1095,9 +1095,9 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id)
#if defined(CONFIG_MEDIA_CONTROLLER)
decoder->pad.flags = MEDIA_PAD_FL_SOURCE;
decoder->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
decoder->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
decoder->sd.entity.flags |= MEDIA_ENT_F_ATV_DECODER;
ret = media_entity_init(&decoder->sd.entity, 1, &decoder->pad, 0);
ret = media_entity_pads_init(&decoder->sd.entity, 1, &decoder->pad);
if (ret < 0) {
v4l2_err(sd, "%s decoder driver failed to register !!\n",
sd->name);

4
drivers/media/i2c/tvp7002.c
View File

@ -1012,9 +1012,9 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id)
#if defined(CONFIG_MEDIA_CONTROLLER)
device->pad.flags = MEDIA_PAD_FL_SOURCE;
device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER;
device->sd.entity.flags |= MEDIA_ENT_F_ATV_DECODER;
error = media_entity_init(&device->sd.entity, 1, &device->pad, 0);
error = media_entity_pads_init(&device->sd.entity, 1, &device->pad);
if (error < 0)
return error;
#endif

455
drivers/media/media-device.c
View File

@ -22,14 +22,18 @@
#include <linux/compat.h>
#include <linux/export.h>
#include <linux/idr.h>
#include <linux/ioctl.h>
#include <linux/media.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <media/media-device.h>
#include <media/media-devnode.h>
#include <media/media-entity.h>
#ifdef CONFIG_MEDIA_CONTROLLER
/* -----------------------------------------------------------------------------
* Userspace API
*/
@ -75,8 +79,8 @@ static struct media_entity *find_entity(struct media_device *mdev, u32 id)
spin_lock(&mdev->lock);
media_device_for_each_entity(entity, mdev) {
if ((entity->id == id && !next) ||
(entity->id > id && next)) {
if (((media_entity_id(entity) == id) && !next) ||
((media_entity_id(entity) > id) && next)) {
spin_unlock(&mdev->lock);
return entity;
}
@ -102,13 +106,13 @@ static long media_device_enum_entities(struct media_device *mdev,
if (ent == NULL)
return -EINVAL;
u_ent.id = ent->id;
u_ent.id = media_entity_id(ent);
if (ent->name)
strlcpy(u_ent.name, ent->name, sizeof(u_ent.name));
u_ent.type = ent->type;
u_ent.revision = ent->revision;
u_ent.type = ent->function;
u_ent.revision = 0; /* Unused */
u_ent.flags = ent->flags;
u_ent.group_id = ent->group_id;
u_ent.group_id = 0; /* Unused */
u_ent.pads = ent->num_pads;
u_ent.links = ent->num_links - ent->num_backlinks;
memcpy(&u_ent.raw, &ent->info, sizeof(ent->info));
@ -120,7 +124,7 @@ static long media_device_enum_entities(struct media_device *mdev,
static void media_device_kpad_to_upad(const struct media_pad *kpad,
struct media_pad_desc *upad)
{
upad->entity = kpad->entity->id;
upad->entity = media_entity_id(kpad->entity);
upad->index = kpad->index;
upad->flags = kpad->flags;
}
@ -148,25 +152,25 @@ static long __media_device_enum_links(struct media_device *mdev,
}
if (links->links) {
struct media_link_desc __user *ulink;
unsigned int l;
struct media_link *link;
struct media_link_desc __user *ulink_desc = links->links;
for (l = 0, ulink = links->links; l < entity->num_links; l++) {
struct media_link_desc link;
list_for_each_entry(link, &entity->links, list) {
struct media_link_desc klink_desc;
/* Ignore backlinks. */
if (entity->links[l].source->entity != entity)
if (link->source->entity != entity)
continue;
memset(&link, 0, sizeof(link));
media_device_kpad_to_upad(entity->links[l].source,
&link.source);
media_device_kpad_to_upad(entity->links[l].sink,
&link.sink);
link.flags = entity->links[l].flags;
if (copy_to_user(ulink, &link, sizeof(*ulink)))
memset(&klink_desc, 0, sizeof(klink_desc));
media_device_kpad_to_upad(link->source,
&klink_desc.source);
media_device_kpad_to_upad(link->sink,
&klink_desc.sink);
klink_desc.flags = link->flags;
if (copy_to_user(ulink_desc, &klink_desc,
sizeof(*ulink_desc)))
return -EFAULT;
ulink++;
ulink_desc++;
}
}
@ -230,6 +234,164 @@ static long media_device_setup_link(struct media_device *mdev,
return ret;
}
#if 0 /* Let's postpone it to Kernel 4.6 */
static long __media_device_get_topology(struct media_device *mdev,
struct media_v2_topology *topo)
{
struct media_entity *entity;
struct media_interface *intf;
struct media_pad *pad;
struct media_link *link;
struct media_v2_entity kentity, *uentity;
struct media_v2_interface kintf, *uintf;
struct media_v2_pad kpad, *upad;
struct media_v2_link klink, *ulink;
unsigned int i;
int ret = 0;
topo->topology_version = mdev->topology_version;
/* Get entities and number of entities */
i = 0;
uentity = media_get_uptr(topo->ptr_entities);
media_device_for_each_entity(entity, mdev) {
i++;
if (ret || !uentity)
continue;
if (i > topo->num_entities) {
ret = -ENOSPC;
continue;
}
/* Copy fields to userspace struct if not error */
memset(&kentity, 0, sizeof(kentity));
kentity.id = entity->graph_obj.id;
kentity.function = entity->function;
strncpy(kentity.name, entity->name,
sizeof(kentity.name));
if (copy_to_user(uentity, &kentity, sizeof(kentity)))
ret = -EFAULT;
uentity++;
}
topo->num_entities = i;
/* Get interfaces and number of interfaces */
i = 0;
uintf = media_get_uptr(topo->ptr_interfaces);
media_device_for_each_intf(intf, mdev) {
i++;
if (ret || !uintf)
continue;
if (i > topo->num_interfaces) {
ret = -ENOSPC;
continue;
}
memset(&kintf, 0, sizeof(kintf));
/* Copy intf fields to userspace struct */
kintf.id = intf->graph_obj.id;
kintf.intf_type = intf->type;
kintf.flags = intf->flags;
if (media_type(&intf->graph_obj) == MEDIA_GRAPH_INTF_DEVNODE) {
struct media_intf_devnode *devnode;
devnode = intf_to_devnode(intf);
kintf.devnode.major = devnode->major;
kintf.devnode.minor = devnode->minor;
}
if (copy_to_user(uintf, &kintf, sizeof(kintf)))
ret = -EFAULT;
uintf++;
}
topo->num_interfaces = i;
/* Get pads and number of pads */
i = 0;
upad = media_get_uptr(topo->ptr_pads);
media_device_for_each_pad(pad, mdev) {
i++;
if (ret || !upad)
continue;
if (i > topo->num_pads) {
ret = -ENOSPC;
continue;
}
memset(&kpad, 0, sizeof(kpad));
/* Copy pad fields to userspace struct */
kpad.id = pad->graph_obj.id;
kpad.entity_id = pad->entity->graph_obj.id;
kpad.flags = pad->flags;
if (copy_to_user(upad, &kpad, sizeof(kpad)))
ret = -EFAULT;
upad++;
}
topo->num_pads = i;
/* Get links and number of links */
i = 0;
ulink = media_get_uptr(topo->ptr_links);
media_device_for_each_link(link, mdev) {
if (link->is_backlink)
continue;
i++;
if (ret || !ulink)
continue;
if (i > topo->num_links) {
ret = -ENOSPC;
continue;
}
memset(&klink, 0, sizeof(klink));
/* Copy link fields to userspace struct */
klink.id = link->graph_obj.id;
klink.source_id = link->gobj0->id;
klink.sink_id = link->gobj1->id;
klink.flags = link->flags;
if (copy_to_user(ulink, &klink, sizeof(klink)))
ret = -EFAULT;
ulink++;
}
topo->num_links = i;
return ret;
}
static long media_device_get_topology(struct media_device *mdev,
struct media_v2_topology __user *utopo)
{
struct media_v2_topology ktopo;
int ret;
if (copy_from_user(&ktopo, utopo, sizeof(ktopo)))
return -EFAULT;
ret = __media_device_get_topology(mdev, &ktopo);
if (ret < 0)
return ret;
if (copy_to_user(utopo, &ktopo, sizeof(*utopo)))
return -EFAULT;
return 0;
}
#endif
static long media_device_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
@ -262,6 +424,14 @@ static long media_device_ioctl(struct file *filp, unsigned int cmd,
mutex_unlock(&dev->graph_mutex);
break;
#if 0 /* Let's postpone it to Kernel 4.6 */
case MEDIA_IOC_G_TOPOLOGY:
mutex_lock(&dev->graph_mutex);
ret = media_device_get_topology(dev,
(struct media_v2_topology __user *)arg);
mutex_unlock(&dev->graph_mutex);
break;
#endif
default:
ret = -ENOIOCTLCMD;
}
@ -310,6 +480,9 @@ static long media_device_compat_ioctl(struct file *filp, unsigned int cmd,
case MEDIA_IOC_DEVICE_INFO:
case MEDIA_IOC_ENUM_ENTITIES:
case MEDIA_IOC_SETUP_LINK:
#if 0 /* Let's postpone it to Kernel 4.6 */
case MEDIA_IOC_G_TOPOLOGY:
#endif
return media_device_ioctl(filp, cmd, arg);
case MEDIA_IOC_ENUM_LINKS32:
@ -357,10 +530,107 @@ static DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
static void media_device_release(struct media_devnode *mdev)
{
dev_dbg(mdev->parent, "Media device released\n");
}
/**
* media_device_register - register a media device
* media_device_register_entity - Register an entity with a media device
* @mdev: The media device
* @entity: The entity
*/
int __must_check media_device_register_entity(struct media_device *mdev,
struct media_entity *entity)
{
unsigned int i;
int ret;
if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN ||
entity->function == MEDIA_ENT_F_UNKNOWN)
dev_warn(mdev->dev,
"Entity type for entity %s was not initialized!\n",
entity->name);
/* Warn if we apparently re-register an entity */
WARN_ON(entity->graph_obj.mdev != NULL);
entity->graph_obj.mdev = mdev;
INIT_LIST_HEAD(&entity->links);
entity->num_links = 0;
entity->num_backlinks = 0;
if (!ida_pre_get(&mdev->entity_internal_idx, GFP_KERNEL))
return -ENOMEM;
spin_lock(&mdev->lock);
ret = ida_get_new_above(&mdev->entity_internal_idx, 1,
&entity->internal_idx);
if (ret < 0) {
spin_unlock(&mdev->lock);
return ret;
}
mdev->entity_internal_idx_max =
max(mdev->entity_internal_idx_max, entity->internal_idx);
/* Initialize media_gobj embedded at the entity */
media_gobj_create(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj);
/* Initialize objects at the pads */
for (i = 0; i < entity->num_pads; i++)
media_gobj_create(mdev, MEDIA_GRAPH_PAD,
&entity->pads[i].graph_obj);
spin_unlock(&mdev->lock);
return 0;
}
EXPORT_SYMBOL_GPL(media_device_register_entity);
static void __media_device_unregister_entity(struct media_entity *entity)
{
struct media_device *mdev = entity->graph_obj.mdev;
struct media_link *link, *tmp;
struct media_interface *intf;
unsigned int i;
ida_simple_remove(&mdev->entity_internal_idx, entity->internal_idx);
/* Remove all interface links pointing to this entity */
list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) {
list_for_each_entry_safe(link, tmp, &intf->links, list) {
if (link->entity == entity)
__media_remove_intf_link(link);
}
}
/* Remove all data links that belong to this entity */
__media_entity_remove_links(entity);
/* Remove all pads that belong to this entity */
for (i = 0; i < entity->num_pads; i++)
media_gobj_destroy(&entity->pads[i].graph_obj);
/* Remove the entity */
media_gobj_destroy(&entity->graph_obj);
entity->graph_obj.mdev = NULL;
}
void media_device_unregister_entity(struct media_entity *entity)
{
struct media_device *mdev = entity->graph_obj.mdev;
if (mdev == NULL)
return;
spin_lock(&mdev->lock);
__media_device_unregister_entity(entity);
spin_unlock(&mdev->lock);
}
EXPORT_SYMBOL_GPL(media_device_unregister_entity);
/**
* media_device_init() - initialize a media device
* @mdev: The media device
*
* The caller is responsible for initializing the media device before
@ -369,23 +639,41 @@ static void media_device_release(struct media_devnode *mdev)
* - dev must point to the parent device
* - model must be filled with the device model name
*/
void media_device_init(struct media_device *mdev)
{
INIT_LIST_HEAD(&mdev->entities);
INIT_LIST_HEAD(&mdev->interfaces);
INIT_LIST_HEAD(&mdev->pads);
INIT_LIST_HEAD(&mdev->links);
spin_lock_init(&mdev->lock);
mutex_init(&mdev->graph_mutex);
ida_init(&mdev->entity_internal_idx);
dev_dbg(mdev->dev, "Media device initialized\n");
}
EXPORT_SYMBOL_GPL(media_device_init);
void media_device_cleanup(struct media_device *mdev)
{
ida_destroy(&mdev->entity_internal_idx);
mdev->entity_internal_idx_max = 0;
mutex_destroy(&mdev->graph_mutex);
}
EXPORT_SYMBOL_GPL(media_device_cleanup);
int __must_check __media_device_register(struct media_device *mdev,
struct module *owner)
{
int ret;
if (WARN_ON(mdev->dev == NULL || mdev->model[0] == 0))
return -EINVAL;
mdev->entity_id = 1;
INIT_LIST_HEAD(&mdev->entities);
spin_lock_init(&mdev->lock);
mutex_init(&mdev->graph_mutex);
/* Register the device node. */
mdev->devnode.fops = &media_device_fops;
mdev->devnode.parent = mdev->dev;
mdev->devnode.release = media_device_release;
/* Set version 0 to indicate user-space that the graph is static */
mdev->topology_version = 0;
ret = media_devnode_register(&mdev->devnode, owner);
if (ret < 0)
return ret;
@ -396,69 +684,74 @@ int __must_check __media_device_register(struct media_device *mdev,
return ret;
}
dev_dbg(mdev->dev, "Media device registered\n");
return 0;
}
EXPORT_SYMBOL_GPL(__media_device_register);
/**
* media_device_unregister - unregister a media device
* @mdev: The media device
*
*/
void media_device_unregister(struct media_device *mdev)
{
struct media_entity *entity;
struct media_entity *next;
list_for_each_entry_safe(entity, next, &mdev->entities, list)
media_device_unregister_entity(entity);
device_remove_file(&mdev->devnode.dev, &dev_attr_model);
media_devnode_unregister(&mdev->devnode);
}
EXPORT_SYMBOL_GPL(media_device_unregister);
/**
* media_device_register_entity - Register an entity with a media device
* @mdev: The media device
* @entity: The entity
*/
int __must_check media_device_register_entity(struct media_device *mdev,
struct media_entity *entity)
{
/* Warn if we apparently re-register an entity */
WARN_ON(entity->parent != NULL);
entity->parent = mdev;
spin_lock(&mdev->lock);
if (entity->id == 0)
entity->id = mdev->entity_id++;
else
mdev->entity_id = max(entity->id + 1, mdev->entity_id);
list_add_tail(&entity->list, &mdev->entities);
spin_unlock(&mdev->lock);
return 0;
}
EXPORT_SYMBOL_GPL(media_device_register_entity);
/**
* media_device_unregister_entity - Unregister an entity
* @entity: The entity
*
* If the entity has never been registered this function will return
* immediately.
*/
void media_device_unregister_entity(struct media_entity *entity)
{
struct media_device *mdev = entity->parent;
struct media_interface *intf, *tmp_intf;
if (mdev == NULL)
return;
spin_lock(&mdev->lock);
list_del(&entity->list);
/* Check if mdev was ever registered at all */
if (!media_devnode_is_registered(&mdev->devnode)) {
spin_unlock(&mdev->lock);
return;
}
/* Remove all entities from the media device */
list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list)
__media_device_unregister_entity(entity);
/* Remove all interfaces from the media device */
list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces,
graph_obj.list) {
__media_remove_intf_links(intf);
media_gobj_destroy(&intf->graph_obj);
kfree(intf);
}
spin_unlock(&mdev->lock);
entity->parent = NULL;
device_remove_file(&mdev->devnode.dev, &dev_attr_model);
media_devnode_unregister(&mdev->devnode);
dev_dbg(mdev->dev, "Media device unregistered\n");
}
EXPORT_SYMBOL_GPL(media_device_unregister_entity);
EXPORT_SYMBOL_GPL(media_device_unregister);
static void media_device_release_devres(struct device *dev, void *res)
{
}
struct media_device *media_device_get_devres(struct device *dev)
{
struct media_device *mdev;
mdev = devres_find(dev, media_device_release_devres, NULL, NULL);
if (mdev)
return mdev;
mdev = devres_alloc(media_device_release_devres,
sizeof(struct media_device), GFP_KERNEL);
if (!mdev)
return NULL;
return devres_get(dev, mdev, NULL, NULL);
}
EXPORT_SYMBOL_GPL(media_device_get_devres);
struct media_device *media_device_find_devres(struct device *dev)
{
return devres_find(dev, media_device_release_devres, NULL, NULL);
}
EXPORT_SYMBOL_GPL(media_device_find_devres);
#endif /* CONFIG_MEDIA_CONTROLLER */

24
drivers/media/media-devnode.c
View File

@ -217,20 +217,6 @@ static const struct file_operations media_devnode_fops = {
.llseek = no_llseek,
};
/**
* media_devnode_register - register a media device node
* @mdev: media device node structure we want to register
*
* The registration code assigns minor numbers and registers the new device node
* with the kernel. An error is returned if no free minor number can be found,
* or if the registration of the device node fails.
*
* Zero is returned on success.
*
* Note that if the media_devnode_register call fails, the release() callback of
* the media_devnode structure is *not* called, so the caller is responsible for
* freeing any data.
*/
int __must_check media_devnode_register(struct media_devnode *mdev,
struct module *owner)
{
@ -285,16 +271,6 @@ error:
return ret;
}
/**
* media_devnode_unregister - unregister a media device node
* @mdev: the device node to unregister
*
* This unregisters the passed device. Future open calls will be met with
* errors.
*
* This function can safely be called if the device node has never been
* registered or has already been unregistered.
*/
void media_devnode_unregister(struct media_devnode *mdev)
{
/* Check if mdev was ever registered at all */

744
drivers/media/media-entity.c
View File

@ -26,65 +26,198 @@
#include <media/media-entity.h>
#include <media/media-device.h>
/**
* media_entity_init - Initialize a media entity
*
* @num_pads: Total number of sink and source pads.
* @extra_links: Initial estimate of the number of extra links.
* @pads: Array of 'num_pads' pads.
*
* The total number of pads is an intrinsic property of entities known by the
* entity driver, while the total number of links depends on hardware design
* and is an extrinsic property unknown to the entity driver. However, in most
* use cases the entity driver can guess the number of links which can safely
* be assumed to be equal to or larger than the number of pads.
*
* For those reasons the links array can be preallocated based on the entity
* driver guess and will be reallocated later if extra links need to be
* created.
*
* This function allocates a links array with enough space to hold at least
* 'num_pads' + 'extra_links' elements. The media_entity::max_links field will
* be set to the number of allocated elements.
*
* The pads array is managed by the entity driver and passed to
* media_entity_init() where its pointer will be stored in the entity structure.
*/
int
media_entity_init(struct media_entity *entity, u16 num_pads,
struct media_pad *pads, u16 extra_links)
static inline const char *gobj_type(enum media_gobj_type type)
{
struct media_link *links;
unsigned int max_links = num_pads + extra_links;
unsigned int i;
switch (type) {
case MEDIA_GRAPH_ENTITY:
return "entity";
case MEDIA_GRAPH_PAD:
return "pad";
case MEDIA_GRAPH_LINK:
return "link";
case MEDIA_GRAPH_INTF_DEVNODE:
return "intf-devnode";
default:
return "unknown";
}
}
links = kzalloc(max_links * sizeof(links[0]), GFP_KERNEL);
if (links == NULL)
static inline const char *intf_type(struct media_interface *intf)
{
switch (intf->type) {
case MEDIA_INTF_T_DVB_FE:
return "frontend";
case MEDIA_INTF_T_DVB_DEMUX:
return "demux";
case MEDIA_INTF_T_DVB_DVR:
return "DVR";
case MEDIA_INTF_T_DVB_CA:
return "CA";
case MEDIA_INTF_T_DVB_NET:
return "dvbnet";
case MEDIA_INTF_T_V4L_VIDEO:
return "video";
case MEDIA_INTF_T_V4L_VBI:
return "vbi";
case MEDIA_INTF_T_V4L_RADIO:
return "radio";
case MEDIA_INTF_T_V4L_SUBDEV:
return "v4l2-subdev";
case MEDIA_INTF_T_V4L_SWRADIO:
return "swradio";
default:
return "unknown-intf";
}
};
__must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum,
int idx_max)
{
ent_enum->bmap = kcalloc(DIV_ROUND_UP(idx_max, BITS_PER_LONG),
sizeof(long), GFP_KERNEL);
if (!ent_enum->bmap)
return -ENOMEM;
entity->group_id = 0;
entity->max_links = max_links;
entity->num_links = 0;
entity->num_backlinks = 0;
bitmap_zero(ent_enum->bmap, idx_max);
ent_enum->idx_max = idx_max;
return 0;
}
EXPORT_SYMBOL_GPL(__media_entity_enum_init);
void media_entity_enum_cleanup(struct media_entity_enum *ent_enum)
{
kfree(ent_enum->bmap);
}
EXPORT_SYMBOL_GPL(media_entity_enum_cleanup);
/**
* dev_dbg_obj - Prints in debug mode a change on some object
*
* @event_name: Name of the event to report. Could be __func__
* @gobj: Pointer to the object
*
* Enabled only if DEBUG or CONFIG_DYNAMIC_DEBUG. Otherwise, it
* won't produce any code.
*/
static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj)
{
#if defined(DEBUG) || defined (CONFIG_DYNAMIC_DEBUG)
switch (media_type(gobj)) {
case MEDIA_GRAPH_ENTITY:
dev_dbg(gobj->mdev->dev,
"%s id %u: entity '%s'\n",
event_name, media_id(gobj),
gobj_to_entity(gobj)->name);
break;
case MEDIA_GRAPH_LINK:
{
struct media_link *link = gobj_to_link(gobj);
dev_dbg(gobj->mdev->dev,
"%s id %u: %s link id %u ==> id %u\n",
event_name, media_id(gobj),
media_type(link->gobj0) == MEDIA_GRAPH_PAD ?
"data" : "interface",
media_id(link->gobj0),
media_id(link->gobj1));
break;
}
case MEDIA_GRAPH_PAD:
{
struct media_pad *pad = gobj_to_pad(gobj);
dev_dbg(gobj->mdev->dev,
"%s id %u: %s%spad '%s':%d\n",
event_name, media_id(gobj),
pad->flags & MEDIA_PAD_FL_SINK ? "sink " : "",
pad->flags & MEDIA_PAD_FL_SOURCE ? "source " : "",
pad->entity->name, pad->index);
break;
}
case MEDIA_GRAPH_INTF_DEVNODE:
{
struct media_interface *intf = gobj_to_intf(gobj);
struct media_intf_devnode *devnode = intf_to_devnode(intf);
dev_dbg(gobj->mdev->dev,
"%s id %u: intf_devnode %s - major: %d, minor: %d\n",
event_name, media_id(gobj),
intf_type(intf),
devnode->major, devnode->minor);
break;
}
}
#endif
}
void media_gobj_create(struct media_device *mdev,
enum media_gobj_type type,
struct media_gobj *gobj)
{
BUG_ON(!mdev);
gobj->mdev = mdev;
/* Create a per-type unique object ID */
gobj->id = media_gobj_gen_id(type, ++mdev->id);
switch (type) {
case MEDIA_GRAPH_ENTITY:
list_add_tail(&gobj->list, &mdev->entities);
break;
case MEDIA_GRAPH_PAD:
list_add_tail(&gobj->list, &mdev->pads);
break;
case MEDIA_GRAPH_LINK:
list_add_tail(&gobj->list, &mdev->links);
break;
case MEDIA_GRAPH_INTF_DEVNODE:
list_add_tail(&gobj->list, &mdev->interfaces);
break;
}
mdev->topology_version++;
dev_dbg_obj(__func__, gobj);
}
void media_gobj_destroy(struct media_gobj *gobj)
{
dev_dbg_obj(__func__, gobj);
gobj->mdev->topology_version++;
/* Remove the object from mdev list */
list_del(&gobj->list);
}
int media_entity_pads_init(struct media_entity *entity, u16 num_pads,
struct media_pad *pads)
{
struct media_device *mdev = entity->graph_obj.mdev;
unsigned int i;
entity->num_pads = num_pads;
entity->pads = pads;
entity->links = links;
if (mdev)
spin_lock(&mdev->lock);
for (i = 0; i < num_pads; i++) {
pads[i].entity = entity;
pads[i].index = i;
if (mdev)
media_gobj_create(mdev, MEDIA_GRAPH_PAD,
&entity->pads[i].graph_obj);
}
if (mdev)
spin_unlock(&mdev->lock);
return 0;
}
EXPORT_SYMBOL_GPL(media_entity_init);
void
media_entity_cleanup(struct media_entity *entity)
{
kfree(entity->links);
}
EXPORT_SYMBOL_GPL(media_entity_cleanup);
EXPORT_SYMBOL_GPL(media_entity_pads_init);
/* -----------------------------------------------------------------------------
* Graph traversal
@ -108,7 +241,7 @@ static void stack_push(struct media_entity_graph *graph,
return;
}
graph->top++;
graph->stack[graph->top].link = 0;
graph->stack[graph->top].link = entity->links.next;
graph->stack[graph->top].entity = entity;
}
@ -125,43 +258,51 @@ static struct media_entity *stack_pop(struct media_entity_graph *graph)
#define link_top(en) ((en)->stack[(en)->top].link)
#define stack_top(en) ((en)->stack[(en)->top].entity)
/**
* media_entity_graph_walk_start - Start walking the media graph at a given entity
* @graph: Media graph structure that will be used to walk the graph
* @entity: Starting entity
*
* This function initializes the graph traversal structure to walk the entities
* graph starting at the given entity. The traversal structure must not be
* modified by the caller during graph traversal. When done the structure can
* safely be freed.
/*
* TODO: Get rid of this.
*/
#define MEDIA_ENTITY_MAX_PADS 512
/**
* media_entity_graph_walk_init - Allocate resources for graph walk
* @graph: Media graph structure that will be used to walk the graph
* @mdev: Media device
*
* Reserve resources for graph walk in media device's current
* state. The memory must be released using
* media_entity_graph_walk_free().
*
* Returns error on failure, zero on success.
*/
__must_check int media_entity_graph_walk_init(
struct media_entity_graph *graph, struct media_device *mdev)
{
return media_entity_enum_init(&graph->ent_enum, mdev);
}
EXPORT_SYMBOL_GPL(media_entity_graph_walk_init);
/**
* media_entity_graph_walk_cleanup - Release resources related to graph walking
* @graph: Media graph structure that was used to walk the graph
*/
void media_entity_graph_walk_cleanup(struct media_entity_graph *graph)
{
media_entity_enum_cleanup(&graph->ent_enum);
}
EXPORT_SYMBOL_GPL(media_entity_graph_walk_cleanup);
void media_entity_graph_walk_start(struct media_entity_graph *graph,
struct media_entity *entity)
{
media_entity_enum_zero(&graph->ent_enum);
media_entity_enum_set(&graph->ent_enum, entity);
graph->top = 0;
graph->stack[graph->top].entity = NULL;
bitmap_zero(graph->entities, MEDIA_ENTITY_ENUM_MAX_ID);
if (WARN_ON(entity->id >= MEDIA_ENTITY_ENUM_MAX_ID))
return;
__set_bit(entity->id, graph->entities);
stack_push(graph, entity);
}
EXPORT_SYMBOL_GPL(media_entity_graph_walk_start);
/**
* media_entity_graph_walk_next - Get the next entity in the graph
* @graph: Media graph structure
*
* Perform a depth-first traversal of the given media entities graph.
*
* The graph structure must have been previously initialized with a call to
* media_entity_graph_walk_start().
*
* Return the next entity in the graph or NULL if the whole graph have been
* traversed.
*/
struct media_entity *
media_entity_graph_walk_next(struct media_entity_graph *graph)
{
@ -173,30 +314,30 @@ media_entity_graph_walk_next(struct media_entity_graph *graph)
* top of the stack until no more entities on the level can be
* found.
*/
while (link_top(graph) < stack_top(graph)->num_links) {
while (link_top(graph) != &stack_top(graph)->links) {
struct media_entity *entity = stack_top(graph);
struct media_link *link = &entity->links[link_top(graph)];
struct media_link *link;
struct media_entity *next;
link = list_entry(link_top(graph), typeof(*link), list);
/* The link is not enabled so we do not follow. */
if (!(link->flags & MEDIA_LNK_FL_ENABLED)) {
link_top(graph)++;
link_top(graph) = link_top(graph)->next;
continue;
}
/* Get the entity in the other end of the link . */
next = media_entity_other(entity, link);
if (WARN_ON(next->id >= MEDIA_ENTITY_ENUM_MAX_ID))
return NULL;
/* Has the entity already been visited? */
if (__test_and_set_bit(next->id, graph->entities)) {
link_top(graph)++;
if (media_entity_enum_test_and_set(&graph->ent_enum, next)) {
link_top(graph) = link_top(graph)->next;
continue;
}
/* Push the new entity to stack and start over. */
link_top(graph)++;
link_top(graph) = link_top(graph)->next;
stack_push(graph, next);
}
@ -208,39 +349,36 @@ EXPORT_SYMBOL_GPL(media_entity_graph_walk_next);
* Pipeline management
*/
/**
* media_entity_pipeline_start - Mark a pipeline as streaming
* @entity: Starting entity
* @pipe: Media pipeline to be assigned to all entities in the pipeline.
*
* Mark all entities connected to a given entity through enabled links, either
* directly or indirectly, as streaming. The given pipeline object is assigned to
* every entity in the pipeline and stored in the media_entity pipe field.
*
* Calls to this function can be nested, in which case the same number of
* media_entity_pipeline_stop() calls will be required to stop streaming. The
* pipeline pointer must be identical for all nested calls to
* media_entity_pipeline_start().
*/
__must_check int media_entity_pipeline_start(struct media_entity *entity,
struct media_pipeline *pipe)
{
struct media_device *mdev = entity->parent;
struct media_entity_graph graph;
struct media_device *mdev = entity->graph_obj.mdev;
struct media_entity_graph *graph = &pipe->graph;
struct media_entity *entity_err = entity;
struct media_link *link;
int ret;
mutex_lock(&mdev->graph_mutex);
media_entity_graph_walk_start(&graph, entity);
if (!pipe->streaming_count++) {
ret = media_entity_graph_walk_init(&pipe->graph, mdev);
if (ret)
goto error_graph_walk_start;
}
while ((entity = media_entity_graph_walk_next(&graph))) {
media_entity_graph_walk_start(&pipe->graph, entity);
while ((entity = media_entity_graph_walk_next(graph))) {
DECLARE_BITMAP(active, MEDIA_ENTITY_MAX_PADS);
DECLARE_BITMAP(has_no_links, MEDIA_ENTITY_MAX_PADS);
unsigned int i;
entity->stream_count++;
WARN_ON(entity->pipe && entity->pipe != pipe);
if (WARN_ON(entity->pipe && entity->pipe != pipe)) {
ret = -EBUSY;
goto error;
}
entity->pipe = pipe;
/* Already streaming --- no need to check. */
@ -253,8 +391,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
bitmap_zero(active, entity->num_pads);
bitmap_fill(has_no_links, entity->num_pads);
for (i = 0; i < entity->num_links; i++) {
struct media_link *link = &entity->links[i];
list_for_each_entry(link, &entity->links, list) {
struct media_pad *pad = link->sink->entity == entity
? link->sink : link->source;
@ -280,7 +417,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
ret = entity->ops->link_validate(link);
if (ret < 0 && ret != -ENOIOCTLCMD) {
dev_dbg(entity->parent->dev,
dev_dbg(entity->graph_obj.mdev->dev,
"link validation failed for \"%s\":%u -> \"%s\":%u, error %d\n",
link->source->entity->name,
link->source->index,
@ -294,7 +431,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity,
if (!bitmap_full(active, entity->num_pads)) {
ret = -EPIPE;
dev_dbg(entity->parent->dev,
dev_dbg(entity->graph_obj.mdev->dev,
"\"%s\":%u must be connected by an enabled link\n",
entity->name,
(unsigned)find_first_zero_bit(
@ -312,9 +449,9 @@ error:
* Link validation on graph failed. We revert what we did and
* return the error.
*/
media_entity_graph_walk_start(&graph, entity_err);
media_entity_graph_walk_start(graph, entity_err);
while ((entity_err = media_entity_graph_walk_next(&graph))) {
while ((entity_err = media_entity_graph_walk_next(graph))) {
entity_err->stream_count--;
if (entity_err->stream_count == 0)
entity_err->pipe = NULL;
@ -327,39 +464,36 @@ error:
break;
}
error_graph_walk_start:
if (!--pipe->streaming_count)
media_entity_graph_walk_cleanup(graph);
mutex_unlock(&mdev->graph_mutex);
return ret;
}
EXPORT_SYMBOL_GPL(media_entity_pipeline_start);
/**
* media_entity_pipeline_stop - Mark a pipeline as not streaming
* @entity: Starting entity
*
* Mark all entities connected to a given entity through enabled links, either
* directly or indirectly, as not streaming. The media_entity pipe field is
* reset to NULL.
*
* If multiple calls to media_entity_pipeline_start() have been made, the same
* number of calls to this function are required to mark the pipeline as not
* streaming.
*/
void media_entity_pipeline_stop(struct media_entity *entity)
{
struct media_device *mdev = entity->parent;
struct media_entity_graph graph;
struct media_device *mdev = entity->graph_obj.mdev;
struct media_entity_graph *graph = &entity->pipe->graph;
struct media_pipeline *pipe = entity->pipe;
mutex_lock(&mdev->graph_mutex);
media_entity_graph_walk_start(&graph, entity);
WARN_ON(!pipe->streaming_count);
media_entity_graph_walk_start(graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
while ((entity = media_entity_graph_walk_next(graph))) {
entity->stream_count--;
if (entity->stream_count == 0)
entity->pipe = NULL;
}
if (!--pipe->streaming_count)
media_entity_graph_walk_cleanup(graph);
mutex_unlock(&mdev->graph_mutex);
}
EXPORT_SYMBOL_GPL(media_entity_pipeline_stop);
@ -368,44 +502,26 @@ EXPORT_SYMBOL_GPL(media_entity_pipeline_stop);
* Module use count
*/
/*
* media_entity_get - Get a reference to the parent module
* @entity: The entity
*
* Get a reference to the parent media device module.
*
* The function will return immediately if @entity is NULL.
*
* Return a pointer to the entity on success or NULL on failure.
*/
struct media_entity *media_entity_get(struct media_entity *entity)
{
if (entity == NULL)
return NULL;
if (entity->parent->dev &&
!try_module_get(entity->parent->dev->driver->owner))
if (entity->graph_obj.mdev->dev &&
!try_module_get(entity->graph_obj.mdev->dev->driver->owner))
return NULL;
return entity;
}
EXPORT_SYMBOL_GPL(media_entity_get);
/*
* media_entity_put - Release the reference to the parent module
* @entity: The entity
*
* Release the reference count acquired by media_entity_get().
*
* The function will return immediately if @entity is NULL.
*/
void media_entity_put(struct media_entity *entity)
{
if (entity == NULL)
return;
if (entity->parent->dev)
module_put(entity->parent->dev->driver->owner);
if (entity->graph_obj.mdev->dev)
module_put(entity->graph_obj.mdev->dev->driver->owner);
}
EXPORT_SYMBOL_GPL(media_entity_put);
@ -413,29 +529,52 @@ EXPORT_SYMBOL_GPL(media_entity_put);
* Links management
*/
static struct media_link *media_entity_add_link(struct media_entity *entity)
static struct media_link *media_add_link(struct list_head *head)
{
if (entity->num_links >= entity->max_links) {
struct media_link *links = entity->links;
unsigned int max_links = entity->max_links + 2;
unsigned int i;
struct media_link *link;
links = krealloc(links, max_links * sizeof(*links), GFP_KERNEL);
if (links == NULL)
return NULL;
link = kzalloc(sizeof(*link), GFP_KERNEL);
if (link == NULL)
return NULL;
for (i = 0; i < entity->num_links; i++)
links[i].reverse->reverse = &links[i];
list_add_tail(&link->list, head);
entity->max_links = max_links;
entity->links = links;
return link;
}
static void __media_entity_remove_link(struct media_entity *entity,
struct media_link *link)
{
struct media_link *rlink, *tmp;
struct media_entity *remote;
if (link->source->entity == entity)
remote = link->sink->entity;
else
remote = link->source->entity;
list_for_each_entry_safe(rlink, tmp, &remote->links, list) {
if (rlink != link->reverse)
continue;
if (link->source->entity == entity)
remote->num_backlinks--;
/* Remove the remote link */
list_del(&rlink->list);
media_gobj_destroy(&rlink->graph_obj);
kfree(rlink);
if (--remote->num_links == 0)
break;
}
return &entity->links[entity->num_links++];
list_del(&link->list);
media_gobj_destroy(&link->graph_obj);
kfree(link);
}
int
media_entity_create_link(struct media_entity *source, u16 source_pad,
media_create_pad_link(struct media_entity *source, u16 source_pad,
struct media_entity *sink, u16 sink_pad, u32 flags)
{
struct media_link *link;
@ -445,68 +584,118 @@ media_entity_create_link(struct media_entity *source, u16 source_pad,
BUG_ON(source_pad >= source->num_pads);
BUG_ON(sink_pad >= sink->num_pads);
link = media_entity_add_link(source);
link = media_add_link(&source->links);
if (link == NULL)
return -ENOMEM;
link->source = &source->pads[source_pad];
link->sink = &sink->pads[sink_pad];
link->flags = flags;
link->flags = flags & ~MEDIA_LNK_FL_INTERFACE_LINK;
/* Initialize graph object embedded at the new link */
media_gobj_create(source->graph_obj.mdev, MEDIA_GRAPH_LINK,
&link->graph_obj);
/* Create the backlink. Backlinks are used to help graph traversal and
* are not reported to userspace.
*/
backlink = media_entity_add_link(sink);
backlink = media_add_link(&sink->links);
if (backlink == NULL) {
source->num_links--;
__media_entity_remove_link(source, link);
return -ENOMEM;
}
backlink->source = &source->pads[source_pad];
backlink->sink = &sink->pads[sink_pad];
backlink->flags = flags;
backlink->is_backlink = true;
/* Initialize graph object embedded at the new link */
media_gobj_create(sink->graph_obj.mdev, MEDIA_GRAPH_LINK,
&backlink->graph_obj);
link->reverse = backlink;
backlink->reverse = link;
sink->num_backlinks++;
sink->num_links++;
source->num_links++;
return 0;
}
EXPORT_SYMBOL_GPL(media_entity_create_link);
EXPORT_SYMBOL_GPL(media_create_pad_link);
int media_create_pad_links(const struct media_device *mdev,
const u32 source_function,
struct media_entity *source,
const u16 source_pad,
const u32 sink_function,
struct media_entity *sink,
const u16 sink_pad,
u32 flags,
const bool allow_both_undefined)
{
struct media_entity *entity;
unsigned function;
int ret;
/* Trivial case: 1:1 relation */
if (source && sink)
return media_create_pad_link(source, source_pad,
sink, sink_pad, flags);
/* Worse case scenario: n:n relation */
if (!source && !sink) {
if (!allow_both_undefined)
return 0;
media_device_for_each_entity(source, mdev) {
if (source->function != source_function)
continue;
media_device_for_each_entity(sink, mdev) {
if (sink->function != sink_function)
continue;
ret = media_create_pad_link(source, source_pad,
sink, sink_pad,
flags);
if (ret)
return ret;
flags &= ~(MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
}
}
return 0;
}
/* Handle 1:n and n:1 cases */
if (source)
function = sink_function;
else
function = source_function;
media_device_for_each_entity(entity, mdev) {
if (entity->function != function)
continue;
if (source)
ret = media_create_pad_link(source, source_pad,
entity, sink_pad, flags);
else
ret = media_create_pad_link(entity, source_pad,
sink, sink_pad, flags);
if (ret)
return ret;
flags &= ~(MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
}
return 0;
}
EXPORT_SYMBOL_GPL(media_create_pad_links);
void __media_entity_remove_links(struct media_entity *entity)
{
unsigned int i;
struct media_link *link, *tmp;
for (i = 0; i < entity->num_links; i++) {
struct media_link *link = &entity->links[i];
struct media_entity *remote;
unsigned int r = 0;
if (link->source->entity == entity)
remote = link->sink->entity;
else
remote = link->source->entity;
while (r < remote->num_links) {
struct media_link *rlink = &remote->links[r];
if (rlink != link->reverse) {
r++;
continue;
}
if (link->source->entity == entity)
remote->num_backlinks--;
if (--remote->num_links == 0)
break;
/* Insert last entry in place of the dropped link. */
*rlink = remote->links[remote->num_links];
}
}
list_for_each_entry_safe(link, tmp, &entity->links, list)
__media_entity_remove_link(entity, link);
entity->num_links = 0;
entity->num_backlinks = 0;
@ -515,13 +704,15 @@ EXPORT_SYMBOL_GPL(__media_entity_remove_links);
void media_entity_remove_links(struct media_entity *entity)
{
struct media_device *mdev = entity->graph_obj.mdev;
/* Do nothing if the entity is not registered. */
if (entity->parent == NULL)
if (mdev == NULL)
return;
mutex_lock(&entity->parent->graph_mutex);
spin_lock(&mdev->lock);
__media_entity_remove_links(entity);
mutex_unlock(&entity->parent->graph_mutex);
spin_unlock(&mdev->lock);
}
EXPORT_SYMBOL_GPL(media_entity_remove_links);
@ -549,20 +740,6 @@ static int __media_entity_setup_link_notify(struct media_link *link, u32 flags)
return 0;
}
/**
* __media_entity_setup_link - Configure a media link
* @link: The link being configured
* @flags: Link configuration flags
*
* The bulk of link setup is handled by the two entities connected through the
* link. This function notifies both entities of the link configuration change.
*
* If the link is immutable or if the current and new configuration are
* identical, return immediately.
*
* The user is expected to hold link->source->parent->mutex. If not,
* media_entity_setup_link() should be used instead.
*/
int __media_entity_setup_link(struct media_link *link, u32 flags)
{
const u32 mask = MEDIA_LNK_FL_ENABLED;
@ -590,7 +767,7 @@ int __media_entity_setup_link(struct media_link *link, u32 flags)
(source->stream_count || sink->stream_count))
return -EBUSY;
mdev = source->parent;
mdev = source->graph_obj.mdev;
if (mdev->link_notify) {
ret = mdev->link_notify(link, flags,
@ -611,31 +788,20 @@ int media_entity_setup_link(struct media_link *link, u32 flags)
{
int ret;
mutex_lock(&link->source->entity->parent->graph_mutex);
mutex_lock(&link->graph_obj.mdev->graph_mutex);
ret = __media_entity_setup_link(link, flags);
mutex_unlock(&link->source->entity->parent->graph_mutex);
mutex_unlock(&link->graph_obj.mdev->graph_mutex);
return ret;
}
EXPORT_SYMBOL_GPL(media_entity_setup_link);
/**
* media_entity_find_link - Find a link between two pads
* @source: Source pad
* @sink: Sink pad
*
* Return a pointer to the link between the two entities. If no such link
* exists, return NULL.
*/
struct media_link *
media_entity_find_link(struct media_pad *source, struct media_pad *sink)
{
struct media_link *link;
unsigned int i;
for (i = 0; i < source->entity->num_links; ++i) {
link = &source->entity->links[i];
list_for_each_entry(link, &source->entity->links, list) {
if (link->source->entity == source->entity &&
link->source->index == source->index &&
link->sink->entity == sink->entity &&
@ -647,23 +813,11 @@ media_entity_find_link(struct media_pad *source, struct media_pad *sink)
}
EXPORT_SYMBOL_GPL(media_entity_find_link);
/**
* media_entity_remote_pad - Find the pad at the remote end of a link
* @pad: Pad at the local end of the link
*
* Search for a remote pad connected to the given pad by iterating over all
* links originating or terminating at that pad until an enabled link is found.
*
* Return a pointer to the pad at the remote end of the first found enabled
* link, or NULL if no enabled link has been found.
*/
struct media_pad *media_entity_remote_pad(struct media_pad *pad)
{
unsigned int i;
for (i = 0; i < pad->entity->num_links; i++) {
struct media_link *link = &pad->entity->links[i];
struct media_link *link;
list_for_each_entry(link, &pad->entity->links, list) {
if (!(link->flags & MEDIA_LNK_FL_ENABLED))
continue;
@ -678,3 +832,113 @@ struct media_pad *media_entity_remote_pad(struct media_pad *pad)
}
EXPORT_SYMBOL_GPL(media_entity_remote_pad);
static void media_interface_init(struct media_device *mdev,
struct media_interface *intf,
u32 gobj_type,
u32 intf_type, u32 flags)
{
intf->type = intf_type;
intf->flags = flags;
INIT_LIST_HEAD(&intf->links);
media_gobj_create(mdev, gobj_type, &intf->graph_obj);
}
/* Functions related to the media interface via device nodes */
struct media_intf_devnode *media_devnode_create(struct media_device *mdev,
u32 type, u32 flags,
u32 major, u32 minor)
{
struct media_intf_devnode *devnode;
devnode = kzalloc(sizeof(*devnode), GFP_KERNEL);
if (!devnode)
return NULL;
devnode->major = major;
devnode->minor = minor;
media_interface_init(mdev, &devnode->intf, MEDIA_GRAPH_INTF_DEVNODE,
type, flags);
return devnode;
}
EXPORT_SYMBOL_GPL(media_devnode_create);
void media_devnode_remove(struct media_intf_devnode *devnode)
{
media_remove_intf_links(&devnode->intf);
media_gobj_destroy(&devnode->intf.graph_obj);
kfree(devnode);
}
EXPORT_SYMBOL_GPL(media_devnode_remove);
struct media_link *media_create_intf_link(struct media_entity *entity,
struct media_interface *intf,
u32 flags)
{
struct media_link *link;
link = media_add_link(&intf->links);
if (link == NULL)
return NULL;
link->intf = intf;
link->entity = entity;
link->flags = flags | MEDIA_LNK_FL_INTERFACE_LINK;
/* Initialize graph object embedded at the new link */
media_gobj_create(intf->graph_obj.mdev, MEDIA_GRAPH_LINK,
&link->graph_obj);
return link;
}
EXPORT_SYMBOL_GPL(media_create_intf_link);
void __media_remove_intf_link(struct media_link *link)
{
list_del(&link->list);
media_gobj_destroy(&link->graph_obj);
kfree(link);
}
EXPORT_SYMBOL_GPL(__media_remove_intf_link);
void media_remove_intf_link(struct media_link *link)
{
struct media_device *mdev = link->graph_obj.mdev;
/* Do nothing if the intf is not registered. */
if (mdev == NULL)
return;
spin_lock(&mdev->lock);
__media_remove_intf_link(link);
spin_unlock(&mdev->lock);
}
EXPORT_SYMBOL_GPL(media_remove_intf_link);
void __media_remove_intf_links(struct media_interface *intf)
{
struct media_link *link, *tmp;
list_for_each_entry_safe(link, tmp, &intf->links, list)
__media_remove_intf_link(link);
}
EXPORT_SYMBOL_GPL(__media_remove_intf_links);
void media_remove_intf_links(struct media_interface *intf)
{
struct media_device *mdev = intf->graph_obj.mdev;
/* Do nothing if the intf is not registered. */
if (mdev == NULL)
return;
spin_lock(&mdev->lock);
__media_remove_intf_links(intf);
spin_unlock(&mdev->lock);
}
EXPORT_SYMBOL_GPL(media_remove_intf_links);

3
drivers/media/pci/bt8xx/dst_ca.c
View File

@ -705,7 +705,8 @@ struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_
struct dvb_device *dvbdev;
dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device");
if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA) == 0) {
if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst,
DVB_DEVICE_CA, 0) == 0) {
dst->dst_ca = dvbdev;
return dst->dst_ca;
}

2
drivers/media/pci/ddbridge/ddbridge-core.c
View File

@ -1065,7 +1065,7 @@ static int ddb_ci_attach(struct ddb_port *port)
port->en, 0, 1);
ret = dvb_register_device(&port->output->adap, &port->output->dev,
&dvbdev_ci, (void *) port->output,
DVB_DEVICE_SEC);
DVB_DEVICE_SEC, 0);
return ret;
}

2
drivers/media/pci/ngene/ngene-core.c
View File

@ -1513,7 +1513,7 @@ static int init_channel(struct ngene_channel *chan)
set_transfer(&chan->dev->channel[2], 1);
dvb_register_device(adapter, &chan->ci_dev,
&ngene_dvbdev_ci, (void *) chan,
DVB_DEVICE_SEC);
DVB_DEVICE_SEC, 0);
if (!chan->ci_dev)
goto err;
}

2
drivers/media/pci/ttpci/av7110.c
View File

@ -1358,7 +1358,7 @@ static int av7110_register(struct av7110 *av7110)
#ifdef CONFIG_DVB_AV7110_OSD
dvb_register_device(&av7110->dvb_adapter, &av7110->osd_dev,
&dvbdev_osd, av7110, DVB_DEVICE_OSD);
&dvbdev_osd, av7110, DVB_DEVICE_OSD, 0);
#endif
dvb_net_init(&av7110->dvb_adapter, &av7110->dvb_net, &dvbdemux->dmx);

4
drivers/media/pci/ttpci/av7110_av.c
View File

@ -1594,10 +1594,10 @@ int av7110_av_register(struct av7110 *av7110)
memset(&av7110->video_size, 0, sizeof (video_size_t));
dvb_register_device(&av7110->dvb_adapter, &av7110->video_dev,
&dvbdev_video, av7110, DVB_DEVICE_VIDEO);
&dvbdev_video, av7110, DVB_DEVICE_VIDEO, 0);
dvb_register_device(&av7110->dvb_adapter, &av7110->audio_dev,
&dvbdev_audio, av7110, DVB_DEVICE_AUDIO);
&dvbdev_audio, av7110, DVB_DEVICE_AUDIO, 0);
return 0;
}

2
drivers/media/pci/ttpci/av7110_ca.c
View File

@ -378,7 +378,7 @@ static struct dvb_device dvbdev_ca = {
int av7110_ca_register(struct av7110 *av7110)
{
return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev,
&dvbdev_ca, av7110, DVB_DEVICE_CA);
&dvbdev_ca, av7110, DVB_DEVICE_CA, 0);
}
void av7110_ca_unregister(struct av7110 *av7110)

3
drivers/media/platform/exynos4-is/common.c
View File

@ -22,8 +22,7 @@ struct v4l2_subdev *fimc_find_remote_sensor(struct media_entity *entity)
while (pad->flags & MEDIA_PAD_FL_SINK) {
/* source pad */
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
sd = media_entity_to_v4l2_subdev(pad->entity);

11
drivers/media/platform/exynos4-is/fimc-capture.c
View File

@ -1136,8 +1136,7 @@ static int fimc_pipeline_validate(struct fimc_dev *fimc)
}
}
if (src_pad == NULL ||
media_entity_type(src_pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
break;
/* Don't call FIMC subdev operation to avoid nested locking */
@ -1392,7 +1391,7 @@ static int fimc_link_setup(struct media_entity *entity,
struct fimc_vid_cap *vc = &fimc->vid_cap;
struct v4l2_subdev *sensor;
if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!is_media_entity_v4l2_subdev(remote->entity))
return -EINVAL;
if (WARN_ON(fimc == NULL))
@ -1800,7 +1799,7 @@ static int fimc_register_capture_device(struct fimc_dev *fimc,
vid_cap->wb_fmt.code = fmt->mbus_code;
vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad);
if (ret)
goto err_free_ctx;
@ -1892,8 +1891,8 @@ int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK;
fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK;
fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
fimc->vid_cap.sd_pads, 0);
ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM,
fimc->vid_cap.sd_pads);
if (ret)
return ret;

11
drivers/media/platform/exynos4-is/fimc-isp-video.c
View File

@ -287,7 +287,7 @@ static int isp_video_open(struct file *file)
goto rel_fh;
if (v4l2_fh_is_singular_file(file)) {
mutex_lock(&me->parent->graph_mutex);
mutex_lock(&me->graph_obj.mdev->graph_mutex);
ret = fimc_pipeline_call(ve, open, me, true);
@ -295,7 +295,7 @@ static int isp_video_open(struct file *file)
if (ret == 0)
me->use_count++;
mutex_unlock(&me->parent->graph_mutex);
mutex_unlock(&me->graph_obj.mdev->graph_mutex);
}
if (!ret)
goto unlock;
@ -311,7 +311,7 @@ static int isp_video_release(struct file *file)
struct fimc_isp *isp = video_drvdata(file);
struct fimc_is_video *ivc = &isp->video_capture;
struct media_entity *entity = &ivc->ve.vdev.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
mutex_lock(&isp->video_lock);
@ -466,8 +466,7 @@ static int isp_video_pipeline_validate(struct fimc_isp *isp)
/* Retrieve format at the source pad */
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
sd = media_entity_to_v4l2_subdev(pad->entity);
@ -617,7 +616,7 @@ int fimc_isp_video_device_register(struct fimc_isp *isp,
vdev->lock = &isp->video_lock;
iv->pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&vdev->entity, 1, &iv->pad, 0);
ret = media_entity_pads_init(&vdev->entity, 1, &iv->pad);
if (ret < 0)
return ret;

4
drivers/media/platform/exynos4-is/fimc-isp.c
View File

@ -708,8 +708,8 @@ int fimc_isp_subdev_create(struct fimc_isp *isp)
isp->subdev_pads[FIMC_ISP_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_FIFO].flags = MEDIA_PAD_FL_SOURCE;
isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_DMA].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, FIMC_ISP_SD_PADS_NUM,
isp->subdev_pads, 0);
ret = media_entity_pads_init(&sd->entity, FIMC_ISP_SD_PADS_NUM,
isp->subdev_pads);
if (ret)
return ret;

24
drivers/media/platform/exynos4-is/fimc-lite.c
View File

@ -494,7 +494,7 @@ static int fimc_lite_open(struct file *file)
atomic_read(&fimc->out_path) != FIMC_IO_DMA)
goto unlock;
mutex_lock(&me->parent->graph_mutex);
mutex_lock(&me->graph_obj.mdev->graph_mutex);
ret = fimc_pipeline_call(&fimc->ve, open, me, true);
@ -502,7 +502,7 @@ static int fimc_lite_open(struct file *file)
if (ret == 0)
me->use_count++;
mutex_unlock(&me->parent->graph_mutex);
mutex_unlock(&me->graph_obj.mdev->graph_mutex);
if (!ret) {
fimc_lite_clear_event_counters(fimc);
@ -535,9 +535,9 @@ static int fimc_lite_release(struct file *file)
fimc_pipeline_call(&fimc->ve, close);
clear_bit(ST_FLITE_IN_USE, &fimc->state);
mutex_lock(&entity->parent->graph_mutex);
mutex_lock(&entity->graph_obj.mdev->graph_mutex);
entity->use_count--;
mutex_unlock(&entity->parent->graph_mutex);
mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
}
_vb2_fop_release(file, NULL);
@ -808,8 +808,7 @@ static int fimc_pipeline_validate(struct fimc_lite *fimc)
}
/* Retrieve format at the source pad */
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
sd = media_entity_to_v4l2_subdev(pad->entity);
@ -982,7 +981,6 @@ static int fimc_lite_link_setup(struct media_entity *entity,
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
unsigned int remote_ent_type = media_entity_type(remote->entity);
int ret = 0;
if (WARN_ON(fimc == NULL))
@ -994,7 +992,7 @@ static int fimc_lite_link_setup(struct media_entity *entity,
switch (local->index) {
case FLITE_SD_PAD_SINK:
if (remote_ent_type != MEDIA_ENT_T_V4L2_SUBDEV) {
if (!is_media_entity_v4l2_subdev(remote->entity)) {
ret = -EINVAL;
break;
}
@ -1012,7 +1010,7 @@ static int fimc_lite_link_setup(struct media_entity *entity,
case FLITE_SD_PAD_SOURCE_DMA:
if (!(flags & MEDIA_LNK_FL_ENABLED))
atomic_set(&fimc->out_path, FIMC_IO_NONE);
else if (remote_ent_type == MEDIA_ENT_T_DEVNODE)
else if (is_media_entity_v4l2_io(remote->entity))
atomic_set(&fimc->out_path, FIMC_IO_DMA);
else
ret = -EINVAL;
@ -1021,7 +1019,7 @@ static int fimc_lite_link_setup(struct media_entity *entity,
case FLITE_SD_PAD_SOURCE_ISP:
if (!(flags & MEDIA_LNK_FL_ENABLED))
atomic_set(&fimc->out_path, FIMC_IO_NONE);
else if (remote_ent_type == MEDIA_ENT_T_V4L2_SUBDEV)
else if (is_media_entity_v4l2_subdev(remote->entity))
atomic_set(&fimc->out_path, FIMC_IO_ISP);
else
ret = -EINVAL;
@ -1316,7 +1314,7 @@ static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
return ret;
fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad, 0);
ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad);
if (ret < 0)
return ret;
@ -1430,8 +1428,8 @@ static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, FLITE_SD_PADS_NUM,
fimc->subdev_pads, 0);
ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM,
fimc->subdev_pads);
if (ret)
return ret;

2
drivers/media/platform/exynos4-is/fimc-m2m.c
View File

@ -739,7 +739,7 @@ int fimc_register_m2m_device(struct fimc_dev *fimc,
return PTR_ERR(fimc->m2m.m2m_dev);
}
ret = media_entity_init(&vfd->entity, 0, NULL, 0);
ret = media_entity_pads_init(&vfd->entity, 0, NULL);
if (ret)
goto err_me;

73
drivers/media/platform/exynos4-is/media-dev.c
View File

@ -88,8 +88,7 @@ static void fimc_pipeline_prepare(struct fimc_pipeline *p,
break;
}
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
sd = media_entity_to_v4l2_subdev(pad->entity);
@ -729,7 +728,7 @@ static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd,
flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0;
sink = &fmd->fimc[i]->vid_cap.subdev.entity;
ret = media_entity_create_link(source, pad, sink,
ret = media_create_pad_link(source, pad, sink,
FIMC_SD_PAD_SINK_CAM, flags);
if (ret)
return ret;
@ -749,7 +748,7 @@ static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd,
continue;
sink = &fmd->fimc_lite[i]->subdev.entity;
ret = media_entity_create_link(source, pad, sink,
ret = media_create_pad_link(source, pad, sink,
FLITE_SD_PAD_SINK, 0);
if (ret)
return ret;
@ -781,13 +780,13 @@ static int __fimc_md_create_flite_source_links(struct fimc_md *fmd)
source = &fimc->subdev.entity;
sink = &fimc->ve.vdev.entity;
/* FIMC-LITE's subdev and video node */
ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_DMA,
ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_DMA,
sink, 0, 0);
if (ret)
break;
/* Link from FIMC-LITE to IS-ISP subdev */
sink = &fmd->fimc_is->isp.subdev.entity;
ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_ISP,
ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_ISP,
sink, 0, 0);
if (ret)
break;
@ -811,7 +810,7 @@ static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd)
/* Link from FIMC-IS-ISP subdev to FIMC */
sink = &fmd->fimc[i]->vid_cap.subdev.entity;
ret = media_entity_create_link(source, FIMC_ISP_SD_PAD_SRC_FIFO,
ret = media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_FIFO,
sink, FIMC_SD_PAD_SINK_FIFO, 0);
if (ret)
return ret;
@ -824,7 +823,7 @@ static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd)
if (sink->num_pads == 0)
return 0;
return media_entity_create_link(source, FIMC_ISP_SD_PAD_SRC_DMA,
return media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_DMA,
sink, 0, 0);
}
@ -873,7 +872,7 @@ static int fimc_md_create_links(struct fimc_md *fmd)
return -EINVAL;
pad = sensor->entity.num_pads - 1;
ret = media_entity_create_link(&sensor->entity, pad,
ret = media_create_pad_link(&sensor->entity, pad,
&csis->entity, CSIS_PAD_SINK,
MEDIA_LNK_FL_IMMUTABLE |
MEDIA_LNK_FL_ENABLED);
@ -927,7 +926,7 @@ static int fimc_md_create_links(struct fimc_md *fmd)
source = &fmd->fimc[i]->vid_cap.subdev.entity;
sink = &fmd->fimc[i]->vid_cap.ve.vdev.entity;
ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE,
ret = media_create_pad_link(source, FIMC_SD_PAD_SOURCE,
sink, 0, flags);
if (ret)
break;
@ -1046,11 +1045,11 @@ static int __fimc_md_modify_pipeline(struct media_entity *entity, bool enable)
return ret;
}
/* Locking: called with entity->parent->graph_mutex mutex held. */
static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable)
/* Locking: called with entity->graph_obj.mdev->graph_mutex mutex held. */
static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable,
struct media_entity_graph *graph)
{
struct media_entity *entity_err = entity;
struct media_entity_graph graph;
int ret;
/*
@ -1059,10 +1058,10 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable)
* through active links. This is needed as we cannot power on/off the
* subdevs in random order.
*/
media_entity_graph_walk_start(&graph, entity);
media_entity_graph_walk_start(graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
while ((entity = media_entity_graph_walk_next(graph))) {
if (!is_media_entity_v4l2_io(entity))
continue;
ret = __fimc_md_modify_pipeline(entity, enable);
@ -1072,11 +1071,12 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable)
}
return 0;
err:
media_entity_graph_walk_start(&graph, entity_err);
while ((entity_err = media_entity_graph_walk_next(&graph))) {
if (media_entity_type(entity_err) != MEDIA_ENT_T_DEVNODE)
err:
media_entity_graph_walk_start(graph, entity_err);
while ((entity_err = media_entity_graph_walk_next(graph))) {
if (!is_media_entity_v4l2_io(entity_err))
continue;
__fimc_md_modify_pipeline(entity_err, !enable);
@ -1091,21 +1091,29 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable)
static int fimc_md_link_notify(struct media_link *link, unsigned int flags,
unsigned int notification)
{
struct media_entity_graph *graph =
&container_of(link->graph_obj.mdev, struct fimc_md,
media_dev)->link_setup_graph;
struct media_entity *sink = link->sink->entity;
int ret = 0;
/* Before link disconnection */
if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH) {
ret = media_entity_graph_walk_init(graph,
link->graph_obj.mdev);
if (ret)
return ret;
if (!(flags & MEDIA_LNK_FL_ENABLED))
ret = __fimc_md_modify_pipelines(sink, false);
ret = __fimc_md_modify_pipelines(sink, false, graph);
#if 0
else
/* TODO: Link state change validation */
#endif
/* After link activation */
} else if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
(link->flags & MEDIA_LNK_FL_ENABLED)) {
ret = __fimc_md_modify_pipelines(sink, true);
} else if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH) {
if (link->flags & MEDIA_LNK_FL_ENABLED)
ret = __fimc_md_modify_pipelines(sink, true, graph);
media_entity_graph_walk_cleanup(graph);
}
return ret ? -EPIPE : 0;
@ -1314,7 +1322,10 @@ static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev);
unlock:
mutex_unlock(&fmd->media_dev.graph_mutex);
return ret;
if (ret < 0)
return ret;
return media_device_register(&fmd->media_dev);
}
static int fimc_md_probe(struct platform_device *pdev)
@ -1345,18 +1356,14 @@ static int fimc_md_probe(struct platform_device *pdev)
fmd->use_isp = fimc_md_is_isp_available(dev->of_node);
fmd->user_subdev_api = true;
media_device_init(&fmd->media_dev);
ret = v4l2_device_register(dev, &fmd->v4l2_dev);
if (ret < 0) {
v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret);
return ret;
}
ret = media_device_register(&fmd->media_dev);
if (ret < 0) {
v4l2_err(v4l2_dev, "Failed to register media device: %d\n", ret);
goto err_v4l2_dev;
}
ret = fimc_md_get_clocks(fmd);
if (ret)
goto err_md;
@ -1425,8 +1432,7 @@ err_clk:
err_m_ent:
fimc_md_unregister_entities(fmd);
err_md:
media_device_unregister(&fmd->media_dev);
err_v4l2_dev:
media_device_cleanup(&fmd->media_dev);
v4l2_device_unregister(&fmd->v4l2_dev);
return ret;
}
@ -1446,6 +1452,7 @@ static int fimc_md_remove(struct platform_device *pdev)
fimc_md_unregister_entities(fmd);
fimc_md_pipelines_free(fmd);
media_device_unregister(&fmd->media_dev);
media_device_cleanup(&fmd->media_dev);
fimc_md_put_clocks(fmd);
return 0;

9
drivers/media/platform/exynos4-is/media-dev.h
View File

@ -154,6 +154,7 @@ struct fimc_md {
bool user_subdev_api;
spinlock_t slock;
struct list_head pipelines;
struct media_entity_graph link_setup_graph;
};
static inline
@ -164,8 +165,8 @@ struct fimc_sensor_info *source_to_sensor_info(struct fimc_source_info *si)
static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me)
{
return me->parent == NULL ? NULL :
container_of(me->parent, struct fimc_md, media_dev);
return me->graph_obj.mdev == NULL ? NULL :
container_of(me->graph_obj.mdev, struct fimc_md, media_dev);
}
static inline struct fimc_md *notifier_to_fimc_md(struct v4l2_async_notifier *n)
@ -175,12 +176,12 @@ static inline struct fimc_md *notifier_to_fimc_md(struct v4l2_async_notifier *n)
static inline void fimc_md_graph_lock(struct exynos_video_entity *ve)
{
mutex_lock(&ve->vdev.entity.parent->graph_mutex);
mutex_lock(&ve->vdev.entity.graph_obj.mdev->graph_mutex);
}
static inline void fimc_md_graph_unlock(struct exynos_video_entity *ve)
{
mutex_unlock(&ve->vdev.entity.parent->graph_mutex);
mutex_unlock(&ve->vdev.entity.graph_obj.mdev->graph_mutex);
}
int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on);

4
drivers/media/platform/exynos4-is/mipi-csis.c
View File

@ -866,8 +866,8 @@ static int s5pcsis_probe(struct platform_device *pdev)
state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&state->sd.entity,
CSIS_PADS_NUM, state->pads, 0);
ret = media_entity_pads_init(&state->sd.entity,
CSIS_PADS_NUM, state->pads);
if (ret < 0)
goto e_clkdis;

306
drivers/media/platform/omap3isp/isp.c
View File

@ -683,15 +683,15 @@ static irqreturn_t isp_isr(int irq, void *_isp)
*
* Return the total number of users of all video device nodes in the pipeline.
*/
static int isp_pipeline_pm_use_count(struct media_entity *entity)
static int isp_pipeline_pm_use_count(struct media_entity *entity,
struct media_entity_graph *graph)
{
struct media_entity_graph graph;
int use = 0;
media_entity_graph_walk_start(&graph, entity);
media_entity_graph_walk_start(graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
while ((entity = media_entity_graph_walk_next(graph))) {
if (is_media_entity_v4l2_io(entity))
use += entity->use_count;
}
@ -714,7 +714,7 @@ static int isp_pipeline_pm_power_one(struct media_entity *entity, int change)
struct v4l2_subdev *subdev;
int ret;
subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV
subdev = is_media_entity_v4l2_subdev(entity)
? media_entity_to_v4l2_subdev(entity) : NULL;
if (entity->use_count == 0 && change > 0 && subdev != NULL) {
@ -742,29 +742,29 @@ static int isp_pipeline_pm_power_one(struct media_entity *entity, int change)
*
* Return 0 on success or a negative error code on failure.
*/
static int isp_pipeline_pm_power(struct media_entity *entity, int change)
static int isp_pipeline_pm_power(struct media_entity *entity, int change,
struct media_entity_graph *graph)
{
struct media_entity_graph graph;
struct media_entity *first = entity;
int ret = 0;
if (!change)
return 0;
media_entity_graph_walk_start(&graph, entity);
media_entity_graph_walk_start(graph, entity);
while (!ret && (entity = media_entity_graph_walk_next(&graph)))
if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
while (!ret && (entity = media_entity_graph_walk_next(graph)))
if (is_media_entity_v4l2_subdev(entity))
ret = isp_pipeline_pm_power_one(entity, change);
if (!ret)
return 0;
return ret;
media_entity_graph_walk_start(&graph, first);
media_entity_graph_walk_start(graph, first);
while ((first = media_entity_graph_walk_next(&graph))
while ((first = media_entity_graph_walk_next(graph))
&& first != entity)
if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE)
if (is_media_entity_v4l2_subdev(first))
isp_pipeline_pm_power_one(first, -change);
return ret;
@ -782,23 +782,24 @@ static int isp_pipeline_pm_power(struct media_entity *entity, int change)
* off is assumed to never fail. No failure can occur when the use parameter is
* set to 0.
*/
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use,
struct media_entity_graph *graph)
{
int change = use ? 1 : -1;
int ret;
mutex_lock(&entity->parent->graph_mutex);
mutex_lock(&entity->graph_obj.mdev->graph_mutex);
/* Apply use count to node. */
entity->use_count += change;
WARN_ON(entity->use_count < 0);
/* Apply power change to connected non-nodes. */
ret = isp_pipeline_pm_power(entity, change);
ret = isp_pipeline_pm_power(entity, change, graph);
if (ret < 0)
entity->use_count -= change;
mutex_unlock(&entity->parent->graph_mutex);
mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
return ret;
}
@ -820,35 +821,49 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
static int isp_pipeline_link_notify(struct media_link *link, u32 flags,
unsigned int notification)
{
struct media_entity_graph *graph =
&container_of(link->graph_obj.mdev, struct isp_device,
media_dev)->pm_count_graph;
struct media_entity *source = link->source->entity;
struct media_entity *sink = link->sink->entity;
int source_use = isp_pipeline_pm_use_count(source);
int sink_use = isp_pipeline_pm_use_count(sink);
int ret;
int source_use;
int sink_use;
int ret = 0;
if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH) {
ret = media_entity_graph_walk_init(graph,
link->graph_obj.mdev);
if (ret)
return ret;
}
source_use = isp_pipeline_pm_use_count(source, graph);
sink_use = isp_pipeline_pm_use_count(sink, graph);
if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
!(flags & MEDIA_LNK_FL_ENABLED)) {
/* Powering off entities is assumed to never fail. */
isp_pipeline_pm_power(source, -sink_use);
isp_pipeline_pm_power(sink, -source_use);
isp_pipeline_pm_power(source, -sink_use, graph);
isp_pipeline_pm_power(sink, -source_use, graph);
return 0;
}
if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH &&
(flags & MEDIA_LNK_FL_ENABLED)) {
ret = isp_pipeline_pm_power(source, sink_use);
ret = isp_pipeline_pm_power(source, sink_use, graph);
if (ret < 0)
return ret;
ret = isp_pipeline_pm_power(sink, source_use);
ret = isp_pipeline_pm_power(sink, source_use, graph);
if (ret < 0)
isp_pipeline_pm_power(source, -sink_use);
return ret;
isp_pipeline_pm_power(source, -sink_use, graph);
}
return 0;
if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH)
media_entity_graph_walk_cleanup(graph);
return ret;
}
/* -----------------------------------------------------------------------------
@ -881,7 +896,7 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe,
* starting entities if the pipeline won't start anyway (those entities
* would then likely fail to stop, making the problem worse).
*/
if (pipe->entities & isp->crashed)
if (media_entity_enum_intersects(&pipe->ent_enum, &isp->crashed))
return -EIO;
spin_lock_irqsave(&pipe->lock, flags);
@ -897,8 +912,7 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe,
break;
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
entity = pad->entity;
@ -987,8 +1001,7 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
break;
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
entity = pad->entity;
@ -1028,7 +1041,8 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
dev_info(isp->dev, "Unable to stop %s\n", subdev->name);
isp->stop_failure = true;
if (subdev == &isp->isp_prev.subdev)
isp->crashed |= 1U << subdev->entity.id;
media_entity_enum_set(&isp->crashed,
&subdev->entity);
failure = -ETIMEDOUT;
}
}
@ -1234,7 +1248,7 @@ static int isp_reset(struct isp_device *isp)
}
isp->stop_failure = false;
isp->crashed = 0;
media_entity_enum_zero(&isp->crashed);
return 0;
}
@ -1645,7 +1659,8 @@ static void __omap3isp_put(struct isp_device *isp, bool save_ctx)
/* Reset the ISP if an entity has failed to stop. This is the
* only way to recover from such conditions.
*/
if (isp->crashed || isp->stop_failure)
if (!media_entity_enum_empty(&isp->crashed) ||
isp->stop_failure)
isp_reset(isp);
isp_disable_clocks(isp);
}
@ -1792,6 +1807,7 @@ static void isp_unregister_entities(struct isp_device *isp)
v4l2_device_unregister(&isp->v4l2_dev);
media_device_unregister(&isp->media_dev);
media_device_cleanup(&isp->media_dev);
}
static int isp_link_entity(
@ -1862,7 +1878,7 @@ static int isp_link_entity(
return -EINVAL;
}
return media_entity_create_link(entity, i, input, pad, flags);
return media_create_pad_link(entity, i, input, pad, flags);
}
static int isp_register_entities(struct isp_device *isp)
@ -1874,12 +1890,7 @@ static int isp_register_entities(struct isp_device *isp)
sizeof(isp->media_dev.model));
isp->media_dev.hw_revision = isp->revision;
isp->media_dev.link_notify = isp_pipeline_link_notify;
ret = media_device_register(&isp->media_dev);
if (ret < 0) {
dev_err(isp->dev, "%s: Media device registration failed (%d)\n",
__func__, ret);
return ret;
}
media_device_init(&isp->media_dev);
isp->v4l2_dev.mdev = &isp->media_dev;
ret = v4l2_device_register(isp->dev, &isp->v4l2_dev);
@ -1930,6 +1941,118 @@ done:
return ret;
}
/*
* isp_create_links() - Create links for internal and external ISP entities
* @isp : Pointer to ISP device
*
* This function creates all links between ISP internal and external entities.
*
* Return: A negative error code on failure or zero on success. Possible error
* codes are those returned by media_create_pad_link().
*/
static int isp_create_links(struct isp_device *isp)
{
int ret;
/* Create links between entities and video nodes. */
ret = media_create_pad_link(
&isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE,
&isp->isp_csi2a.video_out.video.entity, 0, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_ccp2.video_in.video.entity, 0,
&isp->isp_ccp2.subdev.entity, CCP2_PAD_SINK, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF,
&isp->isp_ccdc.video_out.video.entity, 0, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_prev.video_in.video.entity, 0,
&isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_prev.subdev.entity, PREV_PAD_SOURCE,
&isp->isp_prev.video_out.video.entity, 0, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_res.video_in.video.entity, 0,
&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_res.subdev.entity, RESZ_PAD_SOURCE,
&isp->isp_res.video_out.video.entity, 0, 0);
if (ret < 0)
return ret;
/* Create links between entities. */
ret = media_create_pad_link(
&isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE,
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_ccp2.subdev.entity, CCP2_PAD_SOURCE,
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF,
&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_prev.subdev.entity, PREV_PAD_SOURCE,
&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_aewb.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_af.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
return ret;
ret = media_create_pad_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_hist.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
return ret;
return 0;
}
static void isp_cleanup_modules(struct isp_device *isp)
{
omap3isp_h3a_aewb_cleanup(isp);
@ -2000,62 +2123,8 @@ static int isp_initialize_modules(struct isp_device *isp)
goto error_h3a_af;
}
/* Connect the submodules. */
ret = media_entity_create_link(
&isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE,
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(
&isp->isp_ccp2.subdev.entity, CCP2_PAD_SOURCE,
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF,
&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(
&isp->isp_prev.subdev.entity, PREV_PAD_SOURCE,
&isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_aewb.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_af.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(
&isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP,
&isp->isp_hist.subdev.entity, 0,
MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
goto error_link;
return 0;
error_link:
omap3isp_h3a_af_cleanup(isp);
error_h3a_af:
omap3isp_h3a_aewb_cleanup(isp);
error_h3a_aewb:
@ -2149,6 +2218,8 @@ static int isp_remove(struct platform_device *pdev)
isp_detach_iommu(isp);
__omap3isp_put(isp, false);
media_entity_enum_cleanup(&isp->crashed);
return 0;
}
@ -2278,28 +2349,43 @@ static int isp_subdev_notifier_bound(struct v4l2_async_notifier *async,
struct v4l2_subdev *subdev,
struct v4l2_async_subdev *asd)
{
struct isp_device *isp = container_of(async, struct isp_device,
notifier);
struct isp_async_subdev *isd =
container_of(asd, struct isp_async_subdev, asd);
int ret;
ret = isp_link_entity(isp, &subdev->entity, isd->bus.interface);
if (ret < 0)
return ret;
isd->sd = subdev;
isd->sd->host_priv = &isd->bus;
return ret;
return 0;
}
static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async)
{
struct isp_device *isp = container_of(async, struct isp_device,
notifier);
struct v4l2_device *v4l2_dev = &isp->v4l2_dev;
struct v4l2_subdev *sd;
struct isp_bus_cfg *bus;
int ret;
return v4l2_device_register_subdev_nodes(&isp->v4l2_dev);
ret = media_entity_enum_init(&isp->crashed, &isp->media_dev);
if (ret)
return ret;
list_for_each_entry(sd, &v4l2_dev->subdevs, list) {
/* Only try to link entities whose interface was set on bound */
if (sd->host_priv) {
bus = (struct isp_bus_cfg *)sd->host_priv;
ret = isp_link_entity(isp, &sd->entity, bus->interface);
if (ret < 0)
return ret;
}
}
ret = v4l2_device_register_subdev_nodes(&isp->v4l2_dev);
if (ret < 0)
return ret;
return media_device_register(&isp->media_dev);
}
/*
@ -2465,6 +2551,10 @@ static int isp_probe(struct platform_device *pdev)
if (ret < 0)
goto error_modules;
ret = isp_create_links(isp);
if (ret < 0)
goto error_register_entities;
isp->notifier.bound = isp_subdev_notifier_bound;
isp->notifier.complete = isp_subdev_notifier_complete;

9
drivers/media/platform/omap3isp/isp.h
View File

@ -17,6 +17,7 @@
#ifndef OMAP3_ISP_CORE_H
#define OMAP3_ISP_CORE_H
#include <media/media-entity.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <linux/clk-provider.h>
@ -152,7 +153,7 @@ struct isp_xclk {
* @stat_lock: Spinlock for handling statistics
* @isp_mutex: Mutex for serializing requests to ISP.
* @stop_failure: Indicates that an entity failed to stop.
* @crashed: Bitmask of crashed entities (indexed by entity ID)
* @crashed: Crashed ent_enum
* @has_context: Context has been saved at least once and can be restored.
* @ref_count: Reference count for handling multiple ISP requests.
* @cam_ick: Pointer to camera interface clock structure.
@ -176,6 +177,7 @@ struct isp_device {
struct v4l2_device v4l2_dev;
struct v4l2_async_notifier notifier;
struct media_device media_dev;
struct media_entity_graph pm_count_graph;
struct device *dev;
u32 revision;
@ -194,7 +196,7 @@ struct isp_device {
spinlock_t stat_lock; /* common lock for statistic drivers */
struct mutex isp_mutex; /* For handling ref_count field */
bool stop_failure;
u32 crashed;
struct media_entity_enum crashed;
int has_context;
int ref_count;
unsigned int autoidle;
@ -265,7 +267,8 @@ void omap3isp_subclk_enable(struct isp_device *isp,
void omap3isp_subclk_disable(struct isp_device *isp,
enum isp_subclk_resource res);
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use);
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use,
struct media_entity_graph *graph);
int omap3isp_register_entities(struct platform_device *pdev,
struct v4l2_device *v4l2_dev);

31
drivers/media/platform/omap3isp/ispccdc.c
View File

@ -1608,7 +1608,7 @@ static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc)
/* Wait for the CCDC to become idle. */
if (ccdc_sbl_wait_idle(ccdc, 1000)) {
dev_info(isp->dev, "CCDC won't become idle!\n");
isp->crashed |= 1U << ccdc->subdev.entity.id;
media_entity_enum_set(&isp->crashed, &ccdc->subdev.entity);
omap3isp_pipeline_cancel_stream(pipe);
return 0;
}
@ -2513,9 +2513,14 @@ static int ccdc_link_setup(struct media_entity *entity,
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd);
struct isp_device *isp = to_isp_device(ccdc);
unsigned int index = local->index;
switch (local->index | media_entity_type(remote->entity)) {
case CCDC_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
/* FIXME: this is actually a hack! */
if (is_media_entity_v4l2_subdev(remote->entity))
index |= 2 << 16;
switch (index) {
case CCDC_PAD_SINK | 2 << 16:
/* Read from the sensor (parallel interface), CCP2, CSI2a or
* CSI2c.
*/
@ -2543,7 +2548,7 @@ static int ccdc_link_setup(struct media_entity *entity,
* Revisit this when it will be implemented, and return -EBUSY for now.
*/
case CCDC_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV:
case CCDC_PAD_SOURCE_VP | 2 << 16:
/* Write to preview engine, histogram and H3A. When none of
* those links are active, the video port can be disabled.
*/
@ -2556,7 +2561,7 @@ static int ccdc_link_setup(struct media_entity *entity,
}
break;
case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_DEVNODE:
case CCDC_PAD_SOURCE_OF:
/* Write to memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (ccdc->output & ~CCDC_OUTPUT_MEMORY)
@ -2567,7 +2572,7 @@ static int ccdc_link_setup(struct media_entity *entity,
}
break;
case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_V4L2_SUBDEV:
case CCDC_PAD_SOURCE_OF | 2 << 16:
/* Write to resizer */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (ccdc->output & ~CCDC_OUTPUT_RESIZER)
@ -2650,7 +2655,7 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc)
pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &ccdc_media_ops;
ret = media_entity_init(me, CCDC_PADS_NUM, pads, 0);
ret = media_entity_pads_init(me, CCDC_PADS_NUM, pads);
if (ret < 0)
return ret;
@ -2664,19 +2669,11 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc)
ret = omap3isp_video_init(&ccdc->video_out, "CCDC");
if (ret < 0)
goto error_video;
/* Connect the CCDC subdev to the video node. */
ret = media_entity_create_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF,
&ccdc->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
goto error;
return 0;
error_link:
omap3isp_video_cleanup(&ccdc->video_out);
error_video:
error:
media_entity_cleanup(me);
return ret;
}

27
drivers/media/platform/omap3isp/ispccp2.c
View File

@ -956,9 +956,14 @@ static int ccp2_link_setup(struct media_entity *entity,
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
unsigned int index = local->index;
switch (local->index | media_entity_type(remote->entity)) {
case CCP2_PAD_SINK | MEDIA_ENT_T_DEVNODE:
/* FIXME: this is actually a hack! */
if (is_media_entity_v4l2_subdev(remote->entity))
index |= 2 << 16;
switch (index) {
case CCP2_PAD_SINK:
/* read from memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (ccp2->input == CCP2_INPUT_SENSOR)
@ -970,7 +975,7 @@ static int ccp2_link_setup(struct media_entity *entity,
}
break;
case CCP2_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
case CCP2_PAD_SINK | 2 << 16:
/* read from sensor/phy */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (ccp2->input == CCP2_INPUT_MEMORY)
@ -981,7 +986,7 @@ static int ccp2_link_setup(struct media_entity *entity,
ccp2->input = CCP2_INPUT_NONE;
} break;
case CCP2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
case CCP2_PAD_SOURCE | 2 << 16:
/* write to video port/ccdc */
if (flags & MEDIA_LNK_FL_ENABLED)
ccp2->output = CCP2_OUTPUT_CCDC;
@ -1071,7 +1076,7 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2)
pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &ccp2_media_ops;
ret = media_entity_init(me, CCP2_PADS_NUM, pads, 0);
ret = media_entity_pads_init(me, CCP2_PADS_NUM, pads);
if (ret < 0)
return ret;
@ -1097,19 +1102,11 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2)
ret = omap3isp_video_init(&ccp2->video_in, "CCP2");
if (ret < 0)
goto error_video;
/* Connect the video node to the ccp2 subdev. */
ret = media_entity_create_link(&ccp2->video_in.video.entity, 0,
&ccp2->subdev.entity, CCP2_PAD_SINK, 0);
if (ret < 0)
goto error_link;
goto error;
return 0;
error_link:
omap3isp_video_cleanup(&ccp2->video_in);
error_video:
error:
media_entity_cleanup(&ccp2->subdev.entity);
return ret;
}

21
drivers/media/platform/omap3isp/ispcsi2.c
View File

@ -1144,14 +1144,19 @@ static int csi2_link_setup(struct media_entity *entity,
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd);
struct isp_csi2_ctrl_cfg *ctrl = &csi2->ctrl;
unsigned int index = local->index;
/*
* The ISP core doesn't support pipelines with multiple video outputs.
* Revisit this when it will be implemented, and return -EBUSY for now.
*/
switch (local->index | media_entity_type(remote->entity)) {
case CSI2_PAD_SOURCE | MEDIA_ENT_T_DEVNODE:
/* FIXME: this is actually a hack! */
if (is_media_entity_v4l2_subdev(remote->entity))
index |= 2 << 16;
switch (index) {
case CSI2_PAD_SOURCE:
if (flags & MEDIA_LNK_FL_ENABLED) {
if (csi2->output & ~CSI2_OUTPUT_MEMORY)
return -EBUSY;
@ -1161,7 +1166,7 @@ static int csi2_link_setup(struct media_entity *entity,
}
break;
case CSI2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
case CSI2_PAD_SOURCE | 2 << 16:
if (flags & MEDIA_LNK_FL_ENABLED) {
if (csi2->output & ~CSI2_OUTPUT_CCDC)
return -EBUSY;
@ -1245,7 +1250,7 @@ static int csi2_init_entities(struct isp_csi2_device *csi2)
| MEDIA_PAD_FL_MUST_CONNECT;
me->ops = &csi2_media_ops;
ret = media_entity_init(me, CSI2_PADS_NUM, pads, 0);
ret = media_entity_pads_init(me, CSI2_PADS_NUM, pads);
if (ret < 0)
return ret;
@ -1264,16 +1269,8 @@ static int csi2_init_entities(struct isp_csi2_device *csi2)
if (ret < 0)
goto error_video;
/* Connect the CSI2 subdev to the video node. */
ret = media_entity_create_link(&csi2->subdev.entity, CSI2_PAD_SOURCE,
&csi2->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
return 0;
error_link:
omap3isp_video_cleanup(&csi2->video_out);
error_video:
media_entity_cleanup(&csi2->subdev.entity);
return ret;

30
drivers/media/platform/omap3isp/isppreview.c
View File

@ -2144,9 +2144,14 @@ static int preview_link_setup(struct media_entity *entity,
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
unsigned int index = local->index;
switch (local->index | media_entity_type(remote->entity)) {
case PREV_PAD_SINK | MEDIA_ENT_T_DEVNODE:
/* FIXME: this is actually a hack! */
if (is_media_entity_v4l2_subdev(remote->entity))
index |= 2 << 16;
switch (index) {
case PREV_PAD_SINK:
/* read from memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (prev->input == PREVIEW_INPUT_CCDC)
@ -2158,7 +2163,7 @@ static int preview_link_setup(struct media_entity *entity,
}
break;
case PREV_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
case PREV_PAD_SINK | 2 << 16:
/* read from ccdc */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (prev->input == PREVIEW_INPUT_MEMORY)
@ -2175,7 +2180,7 @@ static int preview_link_setup(struct media_entity *entity,
* Revisit this when it will be implemented, and return -EBUSY for now.
*/
case PREV_PAD_SOURCE | MEDIA_ENT_T_DEVNODE:
case PREV_PAD_SOURCE:
/* write to memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (prev->output & ~PREVIEW_OUTPUT_MEMORY)
@ -2186,7 +2191,7 @@ static int preview_link_setup(struct media_entity *entity,
}
break;
case PREV_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
case PREV_PAD_SOURCE | 2 << 16:
/* write to resizer */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (prev->output & ~PREVIEW_OUTPUT_RESIZER)
@ -2282,7 +2287,7 @@ static int preview_init_entities(struct isp_prev_device *prev)
pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &preview_media_ops;
ret = media_entity_init(me, PREV_PADS_NUM, pads, 0);
ret = media_entity_pads_init(me, PREV_PADS_NUM, pads);
if (ret < 0)
return ret;
@ -2311,21 +2316,8 @@ static int preview_init_entities(struct isp_prev_device *prev)
if (ret < 0)
goto error_video_out;
/* Connect the video nodes to the previewer subdev. */
ret = media_entity_create_link(&prev->video_in.video.entity, 0,
&prev->subdev.entity, PREV_PAD_SINK, 0);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(&prev->subdev.entity, PREV_PAD_SOURCE,
&prev->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
return 0;
error_link:
omap3isp_video_cleanup(&prev->video_out);
error_video_out:
omap3isp_video_cleanup(&prev->video_in);
error_video_in:

28
drivers/media/platform/omap3isp/ispresizer.c
View File

@ -1623,9 +1623,14 @@ static int resizer_link_setup(struct media_entity *entity,
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct isp_res_device *res = v4l2_get_subdevdata(sd);
unsigned int index = local->index;
switch (local->index | media_entity_type(remote->entity)) {
case RESZ_PAD_SINK | MEDIA_ENT_T_DEVNODE:
/* FIXME: this is actually a hack! */
if (is_media_entity_v4l2_subdev(remote->entity))
index |= 2 << 16;
switch (index) {
case RESZ_PAD_SINK:
/* read from memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (res->input == RESIZER_INPUT_VP)
@ -1637,7 +1642,7 @@ static int resizer_link_setup(struct media_entity *entity,
}
break;
case RESZ_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
case RESZ_PAD_SINK | 2 << 16:
/* read from ccdc or previewer */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (res->input == RESIZER_INPUT_MEMORY)
@ -1649,7 +1654,7 @@ static int resizer_link_setup(struct media_entity *entity,
}
break;
case RESZ_PAD_SOURCE | MEDIA_ENT_T_DEVNODE:
case RESZ_PAD_SOURCE:
/* resizer always write to memory */
break;
@ -1728,7 +1733,7 @@ static int resizer_init_entities(struct isp_res_device *res)
pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &resizer_media_ops;
ret = media_entity_init(me, RESZ_PADS_NUM, pads, 0);
ret = media_entity_pads_init(me, RESZ_PADS_NUM, pads);
if (ret < 0)
return ret;
@ -1755,21 +1760,8 @@ static int resizer_init_entities(struct isp_res_device *res)
res->video_out.video.entity.flags |= MEDIA_ENT_FL_DEFAULT;
/* Connect the video nodes to the resizer subdev. */
ret = media_entity_create_link(&res->video_in.video.entity, 0,
&res->subdev.entity, RESZ_PAD_SINK, 0);
if (ret < 0)
goto error_link;
ret = media_entity_create_link(&res->subdev.entity, RESZ_PAD_SOURCE,
&res->video_out.video.entity, 0, 0);
if (ret < 0)
goto error_link;
return 0;
error_link:
omap3isp_video_cleanup(&res->video_out);
error_video_out:
omap3isp_video_cleanup(&res->video_in);
error_video_in:

2
drivers/media/platform/omap3isp/ispstat.c
View File

@ -1028,7 +1028,7 @@ static int isp_stat_init_entities(struct ispstat *stat, const char *name,
stat->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
me->ops = NULL;
return media_entity_init(me, 1, &stat->pad, 0);
return media_entity_pads_init(me, 1, &stat->pad);
}
int omap3isp_stat_init(struct ispstat *stat, const char *name,

49
drivers/media/platform/omap3isp/ispvideo.c
View File

@ -210,8 +210,7 @@ isp_video_remote_subdev(struct isp_video *video, u32 *pad)
remote = media_entity_remote_pad(&video->pad);
if (remote == NULL ||
media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
return NULL;
if (pad)
@ -226,16 +225,23 @@ static int isp_video_get_graph_data(struct isp_video *video,
{
struct media_entity_graph graph;
struct media_entity *entity = &video->video.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
struct isp_video *far_end = NULL;
int ret;
mutex_lock(&mdev->graph_mutex);
ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev);
if (ret) {
mutex_unlock(&mdev->graph_mutex);
return ret;
}
media_entity_graph_walk_start(&graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
struct isp_video *__video;
pipe->entities |= 1 << entity->id;
media_entity_enum_set(&pipe->ent_enum, entity);
if (far_end != NULL)
continue;
@ -243,7 +249,7 @@ static int isp_video_get_graph_data(struct isp_video *video,
if (entity == &video->video.entity)
continue;
if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
if (!is_media_entity_v4l2_io(entity))
continue;
__video = to_isp_video(media_entity_to_video_device(entity));
@ -253,6 +259,8 @@ static int isp_video_get_graph_data(struct isp_video *video,
mutex_unlock(&mdev->graph_mutex);
media_entity_graph_walk_cleanup(&graph);
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
pipe->input = far_end;
pipe->output = video;
@ -900,7 +908,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
for (i = 0; i < ARRAY_SIZE(ents); i++) {
/* Is the entity part of the pipeline? */
if (!(pipe->entities & (1 << ents[i]->id)))
if (!media_entity_enum_test(&pipe->ent_enum, ents[i]))
continue;
/* ISP entities have always sink pad == 0. Find source. */
@ -918,7 +926,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
return -EINVAL;
}
if (media_entity_type(source) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!is_media_entity_v4l2_subdev(source))
return 0;
pipe->external = media_entity_to_v4l2_subdev(source);
@ -952,7 +960,8 @@ static int isp_video_check_external_subdevs(struct isp_video *video,
pipe->external_rate = ctrl.value64;
if (pipe->entities & (1 << isp->isp_ccdc.subdev.entity.id)) {
if (media_entity_enum_test(&pipe->ent_enum,
&isp->isp_ccdc.subdev.entity)) {
unsigned int rate = UINT_MAX;
/*
* Check that maximum allowed CCDC pixel rate isn't
@ -1018,7 +1027,9 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
pipe = video->video.entity.pipe
? to_isp_pipeline(&video->video.entity) : &video->pipe;
pipe->entities = 0;
ret = media_entity_enum_init(&pipe->ent_enum, &video->isp->media_dev);
if (ret)
goto err_enum_init;
/* TODO: Implement PM QoS */
pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]);
@ -1092,6 +1103,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
}
mutex_unlock(&video->stream_lock);
return 0;
err_set_stream:
@ -1112,7 +1124,11 @@ err_pipeline_start:
INIT_LIST_HEAD(&video->dmaqueue);
video->queue = NULL;
media_entity_enum_cleanup(&pipe->ent_enum);
err_enum_init:
mutex_unlock(&video->stream_lock);
return ret;
}
@ -1164,6 +1180,8 @@ isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
/* TODO: Implement PM QoS */
media_entity_pipeline_stop(&video->video.entity);
media_entity_enum_cleanup(&pipe->ent_enum);
done:
mutex_unlock(&video->stream_lock);
return 0;
@ -1243,7 +1261,12 @@ static int isp_video_open(struct file *file)
goto done;
}
ret = omap3isp_pipeline_pm_use(&video->video.entity, 1);
ret = media_entity_graph_walk_init(&handle->graph,
&video->isp->media_dev);
if (ret)
goto done;
ret = omap3isp_pipeline_pm_use(&video->video.entity, 1, &handle->graph);
if (ret < 0) {
omap3isp_put(video->isp);
goto done;
@ -1274,6 +1297,7 @@ static int isp_video_open(struct file *file)
done:
if (ret < 0) {
v4l2_fh_del(&handle->vfh);
media_entity_graph_walk_cleanup(&handle->graph);
kfree(handle);
}
@ -1293,7 +1317,8 @@ static int isp_video_release(struct file *file)
vb2_queue_release(&handle->queue);
mutex_unlock(&video->queue_lock);
omap3isp_pipeline_pm_use(&video->video.entity, 0);
omap3isp_pipeline_pm_use(&video->video.entity, 0, &handle->graph);
media_entity_graph_walk_cleanup(&handle->graph);
/* Release the file handle. */
v4l2_fh_del(vfh);
@ -1367,7 +1392,7 @@ int omap3isp_video_init(struct isp_video *video, const char *name)
if (IS_ERR(video->alloc_ctx))
return PTR_ERR(video->alloc_ctx);
ret = media_entity_init(&video->video.entity, 1, &video->pad, 0);
ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
if (ret < 0) {
vb2_dma_contig_cleanup_ctx(video->alloc_ctx);
return ret;

5
drivers/media/platform/omap3isp/ispvideo.h
View File

@ -80,7 +80,7 @@ enum isp_pipeline_state {
* struct isp_pipeline - An ISP hardware pipeline
* @field: The field being processed by the pipeline
* @error: A hardware error occurred during capture
* @entities: Bitmask of entities in the pipeline (indexed by entity ID)
* @ent_enum: Entities in the pipeline
*/
struct isp_pipeline {
struct media_pipeline pipe;
@ -89,7 +89,7 @@ struct isp_pipeline {
enum isp_pipeline_stream_state stream_state;
struct isp_video *input;
struct isp_video *output;
u32 entities;
struct media_entity_enum ent_enum;
unsigned long l3_ick;
unsigned int max_rate;
enum v4l2_field field;
@ -189,6 +189,7 @@ struct isp_video_fh {
struct vb2_queue queue;
struct v4l2_format format;
struct v4l2_fract timeperframe;
struct media_entity_graph graph;
};
#define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh)

8
drivers/media/platform/s3c-camif/camif-capture.c
View File

@ -822,7 +822,7 @@ static int camif_pipeline_validate(struct camif_dev *camif)
/* Retrieve format at the sensor subdev source pad */
pad = media_entity_remote_pad(&camif->pads[0]);
if (!pad || media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
return -EPIPE;
src_fmt.pad = pad->index;
@ -1144,7 +1144,7 @@ int s3c_camif_register_video_node(struct camif_dev *camif, int idx)
goto err_vd_rel;
vp->pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&vfd->entity, 1, &vp->pad, 0);
ret = media_entity_pads_init(&vfd->entity, 1, &vp->pad);
if (ret)
goto err_vd_rel;
@ -1559,8 +1559,8 @@ int s3c_camif_create_subdev(struct camif_dev *camif)
camif->pads[CAMIF_SD_PAD_SOURCE_C].flags = MEDIA_PAD_FL_SOURCE;
camif->pads[CAMIF_SD_PAD_SOURCE_P].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&sd->entity, CAMIF_SD_PADS_NUM,
camif->pads, 0);
ret = media_entity_pads_init(&sd->entity, CAMIF_SD_PADS_NUM,
camif->pads);
if (ret)
return ret;

21
drivers/media/platform/s3c-camif/camif-core.c
View File

@ -263,7 +263,7 @@ static int camif_create_media_links(struct camif_dev *camif)
{
int i, ret;
ret = media_entity_create_link(&camif->sensor.sd->entity, 0,
ret = media_create_pad_link(&camif->sensor.sd->entity, 0,
&camif->subdev.entity, CAMIF_SD_PAD_SINK,
MEDIA_LNK_FL_IMMUTABLE |
MEDIA_LNK_FL_ENABLED);
@ -271,7 +271,7 @@ static int camif_create_media_links(struct camif_dev *camif)
return ret;
for (i = 1; i < CAMIF_SD_PADS_NUM && !ret; i++) {
ret = media_entity_create_link(&camif->subdev.entity, i,
ret = media_create_pad_link(&camif->subdev.entity, i,
&camif->vp[i - 1].vdev.entity, 0,
MEDIA_LNK_FL_IMMUTABLE |
MEDIA_LNK_FL_ENABLED);
@ -305,7 +305,7 @@ static void camif_unregister_media_entities(struct camif_dev *camif)
/*
* Media device
*/
static int camif_media_dev_register(struct camif_dev *camif)
static int camif_media_dev_init(struct camif_dev *camif)
{
struct media_device *md = &camif->media_dev;
struct v4l2_device *v4l2_dev = &camif->v4l2_dev;
@ -324,14 +324,12 @@ static int camif_media_dev_register(struct camif_dev *camif)
strlcpy(v4l2_dev->name, "s3c-camif", sizeof(v4l2_dev->name));
v4l2_dev->mdev = md;
media_device_init(md);
ret = v4l2_device_register(camif->dev, v4l2_dev);
if (ret < 0)
return ret;
ret = media_device_register(md);
if (ret < 0)
v4l2_device_unregister(v4l2_dev);
return ret;
}
@ -483,7 +481,7 @@ static int s3c_camif_probe(struct platform_device *pdev)
goto err_alloc;
}
ret = camif_media_dev_register(camif);
ret = camif_media_dev_init(camif);
if (ret < 0)
goto err_mdev;
@ -510,6 +508,11 @@ static int s3c_camif_probe(struct platform_device *pdev)
goto err_unlock;
mutex_unlock(&camif->media_dev.graph_mutex);
ret = media_device_register(&camif->media_dev);
if (ret < 0)
goto err_sens;
pm_runtime_put(dev);
return 0;
@ -518,6 +521,7 @@ err_unlock:
err_sens:
v4l2_device_unregister(&camif->v4l2_dev);
media_device_unregister(&camif->media_dev);
media_device_cleanup(&camif->media_dev);
camif_unregister_media_entities(camif);
err_mdev:
vb2_dma_contig_cleanup_ctx(camif->alloc_ctx);
@ -539,6 +543,7 @@ static int s3c_camif_remove(struct platform_device *pdev)
struct s3c_camif_plat_data *pdata = &camif->pdata;
media_device_unregister(&camif->media_dev);
media_device_cleanup(&camif->media_dev);
camif_unregister_media_entities(camif);
v4l2_device_unregister(&camif->v4l2_dev);

58
drivers/media/platform/vsp1/vsp1_drv.c
View File

@ -101,7 +101,7 @@ static int vsp1_create_links(struct vsp1_device *vsp1, struct vsp1_entity *sink)
if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK))
continue;
ret = media_entity_create_link(&source->subdev.entity,
ret = media_create_pad_link(&source->subdev.entity,
source->source_pad,
entity, pad, flags);
if (ret < 0)
@ -127,6 +127,7 @@ static void vsp1_destroy_entities(struct vsp1_device *vsp1)
v4l2_device_unregister(&vsp1->v4l2_dev);
media_device_unregister(&vsp1->media_dev);
media_device_cleanup(&vsp1->media_dev);
}
static int vsp1_create_entities(struct vsp1_device *vsp1)
@ -141,12 +142,7 @@ static int vsp1_create_entities(struct vsp1_device *vsp1)
strlcpy(mdev->model, "VSP1", sizeof(mdev->model));
snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s",
dev_name(mdev->dev));
ret = media_device_register(mdev);
if (ret < 0) {
dev_err(vsp1->dev, "media device registration failed (%d)\n",
ret);
return ret;
}
media_device_init(mdev);
vdev->mdev = mdev;
ret = v4l2_device_register(vsp1->dev, vdev);
@ -250,25 +246,6 @@ static int vsp1_create_entities(struct vsp1_device *vsp1)
list_add_tail(&wpf->entity.list_dev, &vsp1->entities);
}
/* Create links. */
list_for_each_entry(entity, &vsp1->entities, list_dev) {
if (entity->type == VSP1_ENTITY_LIF ||
entity->type == VSP1_ENTITY_RPF)
continue;
ret = vsp1_create_links(vsp1, entity);
if (ret < 0)
goto done;
}
if (vsp1->pdata.features & VSP1_HAS_LIF) {
ret = media_entity_create_link(
&vsp1->wpf[0]->entity.subdev.entity, RWPF_PAD_SOURCE,
&vsp1->lif->entity.subdev.entity, LIF_PAD_SINK, 0);
if (ret < 0)
return ret;
}
/* Register all subdevs. */
list_for_each_entry(entity, &vsp1->entities, list_dev) {
ret = v4l2_device_register_subdev(&vsp1->v4l2_dev,
@ -277,7 +254,36 @@ static int vsp1_create_entities(struct vsp1_device *vsp1)
goto done;
}
/* Create links. */
list_for_each_entry(entity, &vsp1->entities, list_dev) {
if (entity->type == VSP1_ENTITY_LIF) {
ret = vsp1_wpf_create_links(vsp1, entity);
if (ret < 0)
goto done;
} else if (entity->type == VSP1_ENTITY_RPF) {
ret = vsp1_rpf_create_links(vsp1, entity);
if (ret < 0)
goto done;
} else {
ret = vsp1_create_links(vsp1, entity);
if (ret < 0)
goto done;
}
}
if (vsp1->pdata.features & VSP1_HAS_LIF) {
ret = media_create_pad_link(
&vsp1->wpf[0]->entity.subdev.entity, RWPF_PAD_SOURCE,
&vsp1->lif->entity.subdev.entity, LIF_PAD_SINK, 0);
if (ret < 0)
return ret;
}
ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev);
if (ret < 0)
goto done;
ret = media_device_register(mdev);
done:
if (ret < 0)

4
drivers/media/platform/vsp1/vsp1_entity.c
View File

@ -219,8 +219,8 @@ int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE;
/* Initialize the media entity. */
return media_entity_init(&entity->subdev.entity, num_pads,
entity->pads, 0);
return media_entity_pads_init(&entity->subdev.entity, num_pads,
entity->pads);
}
void vsp1_entity_destroy(struct vsp1_entity *entity)

29
drivers/media/platform/vsp1/vsp1_rpf.c
View File

@ -277,18 +277,29 @@ struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index)
rpf->entity.video = video;
/* Connect the video device to the RPF. */
ret = media_entity_create_link(&rpf->video.video.entity, 0,
&rpf->entity.subdev.entity,
RWPF_PAD_SINK,
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0)
goto error;
return rpf;
error:
vsp1_entity_destroy(&rpf->entity);
return ERR_PTR(ret);
}
/*
* vsp1_rpf_create_links() - RPF pads links creation
* @vsp1: Pointer to VSP1 device
* @entity: Pointer to VSP1 entity
*
* return negative error code or zero on success
*/
int vsp1_rpf_create_links(struct vsp1_device *vsp1,
struct vsp1_entity *entity)
{
struct vsp1_rwpf *rpf = to_rwpf(&entity->subdev);
/* Connect the video device to the RPF. */
return media_create_pad_link(&rpf->video.video.entity, 0,
&rpf->entity.subdev.entity,
RWPF_PAD_SINK,
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
}

5
drivers/media/platform/vsp1/vsp1_rwpf.h
View File

@ -50,6 +50,11 @@ static inline struct vsp1_rwpf *to_rwpf(struct v4l2_subdev *subdev)
struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index);
struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index);
int vsp1_rpf_create_links(struct vsp1_device *vsp1,
struct vsp1_entity *entity);
int vsp1_wpf_create_links(struct vsp1_device *vsp1,
struct vsp1_entity *entity);
int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code);

64
drivers/media/platform/vsp1/vsp1_video.c
View File

@ -160,8 +160,7 @@ vsp1_video_remote_subdev(struct media_pad *local, u32 *pad)
struct media_pad *remote;
remote = media_entity_remote_pad(local);
if (remote == NULL ||
media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
return NULL;
if (pad)
@ -283,24 +282,35 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
struct vsp1_rwpf *output)
{
struct vsp1_entity *entity;
unsigned int entities = 0;
struct media_entity_enum ent_enum;
struct media_pad *pad;
int rval;
bool bru_found = false;
input->location.left = 0;
input->location.top = 0;
rval = media_entity_enum_init(
&ent_enum, input->entity.pads[RWPF_PAD_SOURCE].graph_obj.mdev);
if (rval)
return rval;
pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]);
while (1) {
if (pad == NULL)
return -EPIPE;
if (pad == NULL) {
rval = -EPIPE;
goto out;
}
/* We've reached a video node, that shouldn't have happened. */
if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
return -EPIPE;
if (!is_media_entity_v4l2_subdev(pad->entity)) {
rval = -EPIPE;
goto out;
}
entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
entity = to_vsp1_entity(
media_entity_to_v4l2_subdev(pad->entity));
/* A BRU is present in the pipeline, store the compose rectangle
* location in the input RPF for use when configuring the RPF.
@ -323,15 +333,18 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
break;
/* Ensure the branch has no loop. */
if (entities & (1 << entity->subdev.entity.id))
return -EPIPE;
entities |= 1 << entity->subdev.entity.id;
if (media_entity_enum_test_and_set(&ent_enum,
&entity->subdev.entity)) {
rval = -EPIPE;
goto out;
}
/* UDS can't be chained. */
if (entity->type == VSP1_ENTITY_UDS) {
if (pipe->uds)
return -EPIPE;
if (pipe->uds) {
rval = -EPIPE;
goto out;
}
pipe->uds = entity;
pipe->uds_input = bru_found ? pipe->bru
@ -349,9 +362,12 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe,
/* The last entity must be the output WPF. */
if (entity != &output->entity)
return -EPIPE;
rval = -EPIPE;
return 0;
out:
media_entity_enum_cleanup(&ent_enum);
return rval;
}
static void __vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe)
@ -380,13 +396,19 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
{
struct media_entity_graph graph;
struct media_entity *entity = &video->video.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
unsigned int i;
int ret;
mutex_lock(&mdev->graph_mutex);
/* Walk the graph to locate the entities and video nodes. */
ret = media_entity_graph_walk_init(&graph, mdev);
if (ret) {
mutex_unlock(&mdev->graph_mutex);
return ret;
}
media_entity_graph_walk_start(&graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
@ -394,7 +416,7 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
struct vsp1_rwpf *rwpf;
struct vsp1_entity *e;
if (media_entity_type(entity) != MEDIA_ENT_T_V4L2_SUBDEV) {
if (is_media_entity_v4l2_io(entity)) {
pipe->num_video++;
continue;
}
@ -420,6 +442,8 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe,
mutex_unlock(&mdev->graph_mutex);
media_entity_graph_walk_cleanup(&graph);
/* We need one output and at least one input. */
if (pipe->num_inputs == 0 || !pipe->output) {
ret = -EPIPE;
@ -663,7 +687,7 @@ void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
while (pad) {
if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!is_media_entity_v4l2_subdev(pad->entity))
break;
entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
@ -1193,7 +1217,7 @@ int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf)
video->pipe.state = VSP1_PIPELINE_STOPPED;
/* Initialize the media entity... */
ret = media_entity_init(&video->video.entity, 1, &video->pad, 0);
ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
if (ret < 0)
return ret;

40
drivers/media/platform/vsp1/vsp1_wpf.c
View File

@ -220,7 +220,6 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
struct v4l2_subdev *subdev;
struct vsp1_video *video;
struct vsp1_rwpf *wpf;
unsigned int flags;
int ret;
wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
@ -276,20 +275,6 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
goto error;
wpf->entity.video = video;
/* Connect the video device to the WPF. All connections are immutable
* except for the WPF0 source link if a LIF is present.
*/
flags = MEDIA_LNK_FL_ENABLED;
if (!(vsp1->pdata.features & VSP1_HAS_LIF) || index != 0)
flags |= MEDIA_LNK_FL_IMMUTABLE;
ret = media_entity_create_link(&wpf->entity.subdev.entity,
RWPF_PAD_SOURCE,
&wpf->video.video.entity, 0, flags);
if (ret < 0)
goto error;
wpf->entity.sink = &wpf->video.video.entity;
return wpf;
@ -298,3 +283,28 @@ error:
vsp1_entity_destroy(&wpf->entity);
return ERR_PTR(ret);
}
/*
* vsp1_wpf_create_links() - RPF pads links creation
* @vsp1: Pointer to VSP1 device
* @entity: Pointer to VSP1 entity
*
* return negative error code or zero on success
*/
int vsp1_wpf_create_links(struct vsp1_device *vsp1,
struct vsp1_entity *entity)
{
struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
unsigned int flags;
/* Connect the video device to the WPF. All connections are immutable
* except for the WPF0 source link if a LIF is present.
*/
flags = MEDIA_LNK_FL_ENABLED;
if (!(vsp1->pdata.features & VSP1_HAS_LIF) || entity->index != 0)
flags |= MEDIA_LNK_FL_IMMUTABLE;
return media_create_pad_link(&wpf->entity.subdev.entity,
RWPF_PAD_SOURCE,
&wpf->video.video.entity, 0, flags);
}

21
drivers/media/platform/xilinx/xilinx-dma.c
View File

@ -49,8 +49,7 @@ xvip_dma_remote_subdev(struct media_pad *local, u32 *pad)
struct media_pad *remote;
remote = media_entity_remote_pad(local);
if (remote == NULL ||
media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
return NULL;
if (pad)
@ -113,8 +112,7 @@ static int xvip_pipeline_start_stop(struct xvip_pipeline *pipe, bool start)
break;
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
entity = pad->entity;
@ -181,19 +179,26 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe,
{
struct media_entity_graph graph;
struct media_entity *entity = &start->video.entity;
struct media_device *mdev = entity->parent;
struct media_device *mdev = entity->graph_obj.mdev;
unsigned int num_inputs = 0;
unsigned int num_outputs = 0;
int ret;
mutex_lock(&mdev->graph_mutex);
/* Walk the graph to locate the video nodes. */
ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev);
if (ret) {
mutex_unlock(&mdev->graph_mutex);
return ret;
}
media_entity_graph_walk_start(&graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
struct xvip_dma *dma;
if (entity->type != MEDIA_ENT_T_DEVNODE_V4L)
if (entity->function != MEDIA_ENT_F_IO_V4L)
continue;
dma = to_xvip_dma(media_entity_to_video_device(entity));
@ -208,6 +213,8 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe,
mutex_unlock(&mdev->graph_mutex);
media_entity_graph_walk_cleanup(&graph);
/* We need exactly one output and zero or one input. */
if (num_outputs != 1 || num_inputs > 1)
return -EPIPE;
@ -677,7 +684,7 @@ int xvip_dma_init(struct xvip_composite_device *xdev, struct xvip_dma *dma,
dma->pad.flags = type == V4L2_BUF_TYPE_VIDEO_CAPTURE
? MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
ret = media_entity_init(&dma->video.entity, 1, &dma->pad, 0);
ret = media_entity_pads_init(&dma->video.entity, 1, &dma->pad);
if (ret < 0)
goto error;

2
drivers/media/platform/xilinx/xilinx-tpg.c
View File

@ -838,7 +838,7 @@ static int xtpg_probe(struct platform_device *pdev)
subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
subdev->entity.ops = &xtpg_media_ops;
ret = media_entity_init(&subdev->entity, xtpg->npads, xtpg->pads, 0);
ret = media_entity_pads_init(&subdev->entity, xtpg->npads, xtpg->pads);
if (ret < 0)
goto error;

16
drivers/media/platform/xilinx/xilinx-vipp.c
View File

@ -156,7 +156,7 @@ static int xvip_graph_build_one(struct xvip_composite_device *xdev,
local->name, local_pad->index,
remote->name, remote_pad->index);
ret = media_entity_create_link(local, local_pad->index,
ret = media_create_pad_link(local, local_pad->index,
remote, remote_pad->index,
link_flags);
if (ret < 0) {
@ -270,7 +270,7 @@ static int xvip_graph_build_dma(struct xvip_composite_device *xdev)
source->name, source_pad->index,
sink->name, sink_pad->index);
ret = media_entity_create_link(source, source_pad->index,
ret = media_create_pad_link(source, source_pad->index,
sink, sink_pad->index,
link_flags);
if (ret < 0) {
@ -311,7 +311,7 @@ static int xvip_graph_notify_complete(struct v4l2_async_notifier *notifier)
if (ret < 0)
dev_err(xdev->dev, "failed to register subdev nodes\n");
return ret;
return media_device_register(&xdev->media_dev);
}
static int xvip_graph_notify_bound(struct v4l2_async_notifier *notifier,
@ -573,6 +573,7 @@ static void xvip_composite_v4l2_cleanup(struct xvip_composite_device *xdev)
{
v4l2_device_unregister(&xdev->v4l2_dev);
media_device_unregister(&xdev->media_dev);
media_device_cleanup(&xdev->media_dev);
}
static int xvip_composite_v4l2_init(struct xvip_composite_device *xdev)
@ -584,19 +585,14 @@ static int xvip_composite_v4l2_init(struct xvip_composite_device *xdev)
sizeof(xdev->media_dev.model));
xdev->media_dev.hw_revision = 0;
ret = media_device_register(&xdev->media_dev);
if (ret < 0) {
dev_err(xdev->dev, "media device registration failed (%d)\n",
ret);
return ret;
}
media_device_init(&xdev->media_dev);
xdev->v4l2_dev.mdev = &xdev->media_dev;
ret = v4l2_device_register(xdev->dev, &xdev->v4l2_dev);
if (ret < 0) {
dev_err(xdev->dev, "V4L2 device registration failed (%d)\n",
ret);
media_device_unregister(&xdev->media_dev);
media_device_cleanup(&xdev->media_dev);
return ret;
}

4
drivers/media/usb/au0828/au0828-cards.c
View File

@ -228,6 +228,10 @@ void au0828_card_analog_fe_setup(struct au0828_dev *dev)
"au8522", 0x8e >> 1, NULL);
if (sd == NULL)
pr_err("analog subdev registration failed\n");
#ifdef CONFIG_MEDIA_CONTROLLER
if (sd)
dev->decoder = &sd->entity;
#endif
}
/* Setup tuners */

171
drivers/media/usb/au0828/au0828-core.c
View File

@ -27,6 +27,9 @@
#include <media/v4l2-common.h>
#include <linux/mutex.h>
/* Due to enum tuner_pad_index */
#include <media/tuner.h>
/*
* 1 = General debug messages
* 2 = USB handling
@ -127,8 +130,23 @@ static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
return status;
}
static void au0828_unregister_media_device(struct au0828_dev *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
if (dev->media_dev) {
media_device_unregister(dev->media_dev);
media_device_cleanup(dev->media_dev);
kfree(dev->media_dev);
dev->media_dev = NULL;
}
#endif
}
static void au0828_usb_release(struct au0828_dev *dev)
{
au0828_unregister_media_device(dev);
/* I2C */
au0828_i2c_unregister(dev);
@ -136,6 +154,20 @@ static void au0828_usb_release(struct au0828_dev *dev)
}
#ifdef CONFIG_VIDEO_AU0828_V4L2
static void au0828_usb_v4l2_media_release(struct au0828_dev *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
int i;
for (i = 0; i < AU0828_MAX_INPUT; i++) {
if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
return;
media_device_unregister_entity(&dev->input_ent[i]);
}
#endif
}
static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
{
struct au0828_dev *dev =
@ -143,6 +175,7 @@ static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev)
v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl);
v4l2_device_unregister(&dev->v4l2_dev);
au0828_usb_v4l2_media_release(dev);
au0828_usb_release(dev);
}
#endif
@ -174,12 +207,123 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
au0828_analog_unregister(dev);
v4l2_device_disconnect(&dev->v4l2_dev);
v4l2_device_put(&dev->v4l2_dev);
/*
* No need to call au0828_usb_release() if V4L2 is enabled,
* as this is already called via au0828_usb_v4l2_release()
*/
return;
}
#endif
au0828_usb_release(dev);
}
static int au0828_media_device_init(struct au0828_dev *dev,
struct usb_device *udev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *mdev;
mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
if (!mdev)
return -ENOMEM;
mdev->dev = &udev->dev;
if (!dev->board.name)
strlcpy(mdev->model, "unknown au0828", sizeof(mdev->model));
else
strlcpy(mdev->model, dev->board.name, sizeof(mdev->model));
if (udev->serial)
strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial));
strcpy(mdev->bus_info, udev->devpath);
mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
mdev->driver_version = LINUX_VERSION_CODE;
media_device_init(mdev);
dev->media_dev = mdev;
#endif
return 0;
}
static int au0828_create_media_graph(struct au0828_dev *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *mdev = dev->media_dev;
struct media_entity *entity;
struct media_entity *tuner = NULL, *decoder = NULL;
int i, ret;
if (!mdev)
return 0;
media_device_for_each_entity(entity, mdev) {
switch (entity->function) {
case MEDIA_ENT_F_TUNER:
tuner = entity;
break;
case MEDIA_ENT_F_ATV_DECODER:
decoder = entity;
break;
}
}
/* Analog setup, using tuner as a link */
/* Something bad happened! */
if (!decoder)
return -EINVAL;
if (tuner) {
ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT,
decoder, 0,
MEDIA_LNK_FL_ENABLED);
if (ret)
return ret;
}
ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
MEDIA_LNK_FL_ENABLED);
if (ret)
return ret;
ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
MEDIA_LNK_FL_ENABLED);
if (ret)
return ret;
for (i = 0; i < AU0828_MAX_INPUT; i++) {
struct media_entity *ent = &dev->input_ent[i];
if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
break;
switch (AUVI_INPUT(i).type) {
case AU0828_VMUX_CABLE:
case AU0828_VMUX_TELEVISION:
case AU0828_VMUX_DVB:
if (!tuner)
break;
ret = media_create_pad_link(ent, 0, tuner,
TUNER_PAD_RF_INPUT,
MEDIA_LNK_FL_ENABLED);
if (ret)
return ret;
break;
case AU0828_VMUX_COMPOSITE:
case AU0828_VMUX_SVIDEO:
default: /* AU0828_VMUX_DEBUG */
/* FIXME: fix the decoder PAD */
ret = media_create_pad_link(ent, 0, decoder, 0, 0);
if (ret)
return ret;
break;
}
}
#endif
return 0;
}
static int au0828_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
@ -224,11 +368,23 @@ static int au0828_usb_probe(struct usb_interface *interface,
dev->boardnr = id->driver_info;
dev->board = au0828_boards[dev->boardnr];
/* Initialize the media controller */
retval = au0828_media_device_init(dev, usbdev);
if (retval) {
pr_err("%s() au0828_media_device_init failed\n",
__func__);
mutex_unlock(&dev->lock);
kfree(dev);
return retval;
}
#ifdef CONFIG_VIDEO_AU0828_V4L2
dev->v4l2_dev.release = au0828_usb_v4l2_release;
/* Create the v4l2_device */
#ifdef CONFIG_MEDIA_CONTROLLER
dev->v4l2_dev.mdev = dev->media_dev;
#endif
retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
if (retval) {
pr_err("%s() v4l2_device_register failed\n",
@ -287,6 +443,21 @@ static int au0828_usb_probe(struct usb_interface *interface,
mutex_unlock(&dev->lock);
retval = au0828_create_media_graph(dev);
if (retval) {
pr_err("%s() au0282_dev_register failed to create graph\n",
__func__);
goto done;
}
#ifdef CONFIG_MEDIA_CONTROLLER
retval = media_device_register(dev->media_dev);
#endif
done:
if (retval < 0)
au0828_usb_disconnect(interface);
return retval;
}

12
drivers/media/usb/au0828/au0828-dvb.c
View File

@ -415,6 +415,11 @@ static int dvb_register(struct au0828_dev *dev)
result);
goto fail_adapter;
}
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
dvb->adapter.mdev = dev->media_dev;
#endif
dvb->adapter.priv = dev;
/* register frontend */
@ -480,8 +485,15 @@ static int dvb_register(struct au0828_dev *dev)
dvb->start_count = 0;
dvb->stop_count = 0;
result = dvb_create_media_graph(&dvb->adapter, false);
if (result < 0)
goto fail_create_graph;
return 0;
fail_create_graph:
dvb_net_release(&dvb->net);
fail_fe_conn:
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
fail_fe_mem:

126
drivers/media/usb/au0828/au0828-video.c
View File

@ -638,6 +638,64 @@ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb)
return rc;
}
static int au0828_enable_analog_tuner(struct au0828_dev *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *mdev = dev->media_dev;
struct media_entity *source;
struct media_link *link, *found_link = NULL;
int ret, active_links = 0;
if (!mdev || !dev->decoder)
return 0;
/*
* This will find the tuner that is connected into the decoder.
* Technically, this is not 100% correct, as the device may be
* using an analog input instead of the tuner. However, as we can't
* do DVB streaming while the DMA engine is being used for V4L2,
* this should be enough for the actual needs.
*/
list_for_each_entry(link, &dev->decoder->links, list) {
if (link->sink->entity == dev->decoder) {
found_link = link;
if (link->flags & MEDIA_LNK_FL_ENABLED)
active_links++;
break;
}
}
if (active_links == 1 || !found_link)
return 0;
source = found_link->source->entity;
list_for_each_entry(link, &source->links, list) {
struct media_entity *sink;
int flags = 0;
sink = link->sink->entity;
if (sink == dev->decoder)
flags = MEDIA_LNK_FL_ENABLED;
ret = media_entity_setup_link(link, flags);
if (ret) {
pr_err(
"Couldn't change link %s->%s to %s. Error %d\n",
source->name, sink->name,
flags ? "enabled" : "disabled",
ret);
return ret;
} else
au0828_isocdbg(
"link %s->%s was %s\n",
source->name, sink->name,
flags ? "ENABLED" : "disabled");
}
#endif
return 0;
}
static int queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], void *alloc_ctxs[])
@ -650,6 +708,8 @@ static int queue_setup(struct vb2_queue *vq,
*nplanes = 1;
sizes[0] = size;
au0828_enable_analog_tuner(dev);
return 0;
}
@ -1735,6 +1795,69 @@ static int au0828_vb2_setup(struct au0828_dev *dev)
return 0;
}
static void au0828_analog_create_entities(struct au0828_dev *dev)
{
#if defined(CONFIG_MEDIA_CONTROLLER)
static const char * const inames[] = {
[AU0828_VMUX_COMPOSITE] = "Composite",
[AU0828_VMUX_SVIDEO] = "S-Video",
[AU0828_VMUX_CABLE] = "Cable TV",
[AU0828_VMUX_TELEVISION] = "Television",
[AU0828_VMUX_DVB] = "DVB",
[AU0828_VMUX_DEBUG] = "tv debug"
};
int ret, i;
/* Initialize Video and VBI pads */
dev->video_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
if (ret < 0)
pr_err("failed to initialize video media entity!\n");
dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
if (ret < 0)
pr_err("failed to initialize vbi media entity!\n");
/* Create entities for each input connector */
for (i = 0; i < AU0828_MAX_INPUT; i++) {
struct media_entity *ent = &dev->input_ent[i];
if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED)
break;
ent->name = inames[AUVI_INPUT(i).type];
ent->flags = MEDIA_ENT_FL_CONNECTOR;
dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;
switch (AUVI_INPUT(i).type) {
case AU0828_VMUX_COMPOSITE:
ent->function = MEDIA_ENT_F_CONN_COMPOSITE;
break;
case AU0828_VMUX_SVIDEO:
ent->function = MEDIA_ENT_F_CONN_SVIDEO;
break;
case AU0828_VMUX_CABLE:
case AU0828_VMUX_TELEVISION:
case AU0828_VMUX_DVB:
ent->function = MEDIA_ENT_F_CONN_RF;
break;
default: /* AU0828_VMUX_DEBUG */
ent->function = MEDIA_ENT_F_CONN_TEST;
break;
}
ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);
if (ret < 0)
pr_err("failed to initialize input pad[%d]!\n", i);
ret = media_device_register_entity(dev->media_dev, ent);
if (ret < 0)
pr_err("failed to register input entity %d!\n", i);
}
#endif
}
/**************************************************************************/
int au0828_analog_register(struct au0828_dev *dev,
@ -1823,6 +1946,9 @@ int au0828_analog_register(struct au0828_dev *dev,
dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock;
strcpy(dev->vbi_dev.name, "au0828a vbi");
/* Init entities at the Media Controller */
au0828_analog_create_entities(dev);
/* initialize videobuf2 stuff */
retval = au0828_vb2_setup(dev);
if (retval != 0) {

10
drivers/media/usb/au0828/au0828.h
View File

@ -33,6 +33,7 @@
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/media-device.h>
/* DVB */
#include "demux.h"
@ -93,7 +94,6 @@ struct au0828_board {
unsigned char has_ir_i2c:1;
unsigned char has_analog:1;
struct au0828_input input[AU0828_MAX_INPUT];
};
struct au0828_dvb {
@ -276,6 +276,14 @@ struct au0828_dev {
/* Preallocated transfer digital transfer buffers */
char *dig_transfer_buffer[URB_COUNT];
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *media_dev;
struct media_pad video_pad, vbi_pad;
struct media_entity *decoder;
struct media_entity input_ent[AU0828_MAX_INPUT];
struct media_pad input_pad[AU0828_MAX_INPUT];
#endif
};

81
drivers/media/usb/cx231xx/cx231xx-cards.c
View File

@ -1172,6 +1172,7 @@ static void cx231xx_unregister_media_device(struct cx231xx *dev)
#ifdef CONFIG_MEDIA_CONTROLLER
if (dev->media_dev) {
media_device_unregister(dev->media_dev);
media_device_cleanup(dev->media_dev);
kfree(dev->media_dev);
dev->media_dev = NULL;
}
@ -1185,8 +1186,6 @@ static void cx231xx_unregister_media_device(struct cx231xx *dev)
*/
void cx231xx_release_resources(struct cx231xx *dev)
{
cx231xx_unregister_media_device(dev);
cx231xx_release_analog_resources(dev);
cx231xx_remove_from_devlist(dev);
@ -1199,22 +1198,23 @@ void cx231xx_release_resources(struct cx231xx *dev)
/* delete v4l2 device */
v4l2_device_unregister(&dev->v4l2_dev);
cx231xx_unregister_media_device(dev);
usb_put_dev(dev->udev);
/* Mark device as unused */
clear_bit(dev->devno, &cx231xx_devused);
}
static void cx231xx_media_device_register(struct cx231xx *dev,
struct usb_device *udev)
static int cx231xx_media_device_init(struct cx231xx *dev,
struct usb_device *udev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *mdev;
int ret;
mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
if (!mdev)
return;
return -ENOMEM;
mdev->dev = dev->dev;
strlcpy(mdev->model, dev->board.name, sizeof(mdev->model));
@ -1224,35 +1224,30 @@ static void cx231xx_media_device_register(struct cx231xx *dev,
mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
mdev->driver_version = LINUX_VERSION_CODE;
ret = media_device_register(mdev);
if (ret) {
dev_err(dev->dev,
"Couldn't create a media device. Error: %d\n",
ret);
kfree(mdev);
return;
}
media_device_init(mdev);
dev->media_dev = mdev;
#endif
return 0;
}
static void cx231xx_create_media_graph(struct cx231xx *dev)
static int cx231xx_create_media_graph(struct cx231xx *dev)
{
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device *mdev = dev->media_dev;
struct media_entity *entity;
struct media_entity *tuner = NULL, *decoder = NULL;
int ret;
if (!mdev)
return;
return 0;
media_device_for_each_entity(entity, mdev) {
switch (entity->type) {
case MEDIA_ENT_T_V4L2_SUBDEV_TUNER:
switch (entity->function) {
case MEDIA_ENT_F_TUNER:
tuner = entity;
break;
case MEDIA_ENT_T_V4L2_SUBDEV_DECODER:
case MEDIA_ENT_F_ATV_DECODER:
decoder = entity;
break;
}
@ -1261,16 +1256,24 @@ static void cx231xx_create_media_graph(struct cx231xx *dev)
/* Analog setup, using tuner as a link */
if (!decoder)
return;
return 0;
if (tuner)
media_entity_create_link(tuner, 0, decoder, 0,
MEDIA_LNK_FL_ENABLED);
media_entity_create_link(decoder, 1, &dev->vdev.entity, 0,
MEDIA_LNK_FL_ENABLED);
media_entity_create_link(decoder, 2, &dev->vbi_dev.entity, 0,
MEDIA_LNK_FL_ENABLED);
if (tuner) {
ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0,
MEDIA_LNK_FL_ENABLED);
if (ret < 0)
return ret;
}
ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0,
MEDIA_LNK_FL_ENABLED);
if (ret < 0)
return ret;
ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0,
MEDIA_LNK_FL_ENABLED);
if (ret < 0)
return ret;
#endif
return 0;
}
/*
@ -1660,8 +1663,12 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
/* Register the media controller */
cx231xx_media_device_register(dev, udev);
/* Initialize the media controller */
retval = cx231xx_media_device_init(dev, udev);
if (retval) {
dev_err(d, "cx231xx_media_device_init failed\n");
goto err_media_init;
}
/* Create v4l2 device */
#ifdef CONFIG_MEDIA_CONTROLLER
@ -1732,9 +1739,19 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
/* load other modules required */
request_modules(dev);
cx231xx_create_media_graph(dev);
retval = cx231xx_create_media_graph(dev);
if (retval < 0)
goto done;
#ifdef CONFIG_MEDIA_CONTROLLER
retval = media_device_register(dev->media_dev);
#endif
done:
if (retval < 0)
cx231xx_release_resources(dev);
return retval;
return 0;
err_video_alt:
/* cx231xx_uninit_dev: */
cx231xx_close_extension(dev);
@ -1746,6 +1763,8 @@ err_video_alt:
err_init:
v4l2_device_unregister(&dev->v4l2_dev);
err_v4l2:
cx231xx_unregister_media_device(dev);
err_media_init:
usb_set_intfdata(interface, NULL);
err_if:
usb_put_dev(udev);

6
drivers/media/usb/cx231xx/cx231xx-dvb.c
View File

@ -551,10 +551,14 @@ static int register_dvb(struct cx231xx_dvb *dvb,
/* register network adapter */
dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
dvb_create_media_graph(&dvb->adapter);
result = dvb_create_media_graph(&dvb->adapter, false);
if (result < 0)
goto fail_create_graph;
return 0;
fail_create_graph:
dvb_net_release(&dvb->net);
fail_fe_conn:
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
fail_fe_mem:

14
drivers/media/usb/cx231xx/cx231xx-video.c
View File

@ -106,7 +106,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
struct media_device *mdev = dev->media_dev;
struct media_entity *entity, *decoder = NULL, *source;
struct media_link *link, *found_link = NULL;
int i, ret, active_links = 0;
int ret, active_links = 0;
if (!mdev)
return 0;
@ -119,7 +119,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
* this should be enough for the actual needs.
*/
media_device_for_each_entity(entity, mdev) {
if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) {
if (entity->function == MEDIA_ENT_F_ATV_DECODER) {
decoder = entity;
break;
}
@ -127,8 +127,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
if (!decoder)
return 0;
for (i = 0; i < decoder->num_links; i++) {
link = &decoder->links[i];
list_for_each_entry(link, &decoder->links, list) {
if (link->sink->entity == decoder) {
found_link = link;
if (link->flags & MEDIA_LNK_FL_ENABLED)
@ -141,11 +140,10 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev)
return 0;
source = found_link->source->entity;
for (i = 0; i < source->num_links; i++) {
list_for_each_entry(link, &source->links, list) {
struct media_entity *sink;
int flags = 0;
link = &source->links[i];
sink = link->sink->entity;
if (sink == entity)
@ -2177,7 +2175,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
#if defined(CONFIG_MEDIA_CONTROLLER)
dev->video_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0);
ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);
if (ret < 0)
dev_err(dev->dev, "failed to initialize video media entity!\n");
#endif
@ -2204,7 +2202,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
#if defined(CONFIG_MEDIA_CONTROLLER)
dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0);
ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);
if (ret < 0)
dev_err(dev->dev, "failed to initialize vbi media entity!\n");
#endif

42
drivers/media/usb/dvb-usb-v2/dvb_usb_core.c
View File

@ -400,17 +400,16 @@ skip_feed_stop:
return ret;
}
static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap)
static int dvb_usbv2_media_device_init(struct dvb_usb_adapter *adap)
{
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
struct media_device *mdev;
struct dvb_usb_device *d = adap_to_d(adap);
struct usb_device *udev = d->udev;
int ret;
mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
if (!mdev)
return;
return -ENOMEM;
mdev->dev = &udev->dev;
strlcpy(mdev->model, d->name, sizeof(mdev->model));
@ -420,19 +419,21 @@ static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap)
mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
mdev->driver_version = LINUX_VERSION_CODE;
ret = media_device_register(mdev);
if (ret) {
dev_err(&d->udev->dev,
"Couldn't create a media device. Error: %d\n",
ret);
kfree(mdev);
return;
}
media_device_init(mdev);
dvb_register_media_controller(&adap->dvb_adap, mdev);
dev_info(&d->udev->dev, "media controller created\n");
#endif
return 0;
}
static int dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap)
{
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
return media_device_register(adap->dvb_adap.mdev);
#else
return 0;
#endif
}
@ -444,6 +445,7 @@ static void dvb_usbv2_media_device_unregister(struct dvb_usb_adapter *adap)
return;
media_device_unregister(adap->dvb_adap.mdev);
media_device_cleanup(adap->dvb_adap.mdev);
kfree(adap->dvb_adap.mdev);
adap->dvb_adap.mdev = NULL;
@ -467,7 +469,12 @@ static int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap)
adap->dvb_adap.priv = adap;
dvb_usbv2_media_device_register(adap);
ret = dvb_usbv2_media_device_init(adap);
if (ret < 0) {
dev_dbg(&d->udev->dev, "%s: dvb_usbv2_media_device_init() failed=%d\n",
__func__, ret);
goto err_dvb_register_mc;
}
if (d->props->read_mac_address) {
ret = d->props->read_mac_address(adap,
@ -518,6 +525,7 @@ err_dvb_dmxdev_init:
dvb_dmx_release(&adap->demux);
err_dvb_dmx_init:
dvb_usbv2_media_device_unregister(adap);
err_dvb_register_mc:
dvb_unregister_adapter(&adap->dvb_adap);
err_dvb_register_adapter:
adap->dvb_adap.priv = NULL;
@ -534,7 +542,6 @@ static int dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter *adap)
adap->demux.dmx.close(&adap->demux.dmx);
dvb_dmxdev_release(&adap->dmxdev);
dvb_dmx_release(&adap->demux);
dvb_usbv2_media_device_unregister(adap);
dvb_unregister_adapter(&adap->dvb_adap);
}
@ -698,9 +705,13 @@ static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap)
}
}
dvb_create_media_graph(&adap->dvb_adap);
ret = dvb_create_media_graph(&adap->dvb_adap, true);
if (ret < 0)
goto err_dvb_unregister_frontend;
return 0;
ret = dvb_usbv2_media_device_register(adap);
return ret;
err_dvb_unregister_frontend:
for (i = count_registered - 1; i >= 0; i--)
@ -840,6 +851,7 @@ static int dvb_usbv2_adapter_exit(struct dvb_usb_device *d)
dvb_usbv2_adapter_dvb_exit(&d->adapter[i]);
dvb_usbv2_adapter_stream_exit(&d->adapter[i]);
dvb_usbv2_adapter_frontend_exit(&d->adapter[i]);
dvb_usbv2_media_device_unregister(&d->adapter[i]);
}
}

20
drivers/media/usb/dvb-usb-v2/mxl111sf.c
View File

@ -10,6 +10,7 @@
#include <linux/vmalloc.h>
#include <linux/i2c.h>
#include <media/tuner.h>
#include "mxl111sf.h"
#include "mxl111sf-reg.h"
@ -868,6 +869,10 @@ static struct mxl111sf_tuner_config mxl_tuner_config = {
static int mxl111sf_attach_tuner(struct dvb_usb_adapter *adap)
{
struct mxl111sf_state *state = adap_to_priv(adap);
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
struct media_device *mdev = dvb_get_media_controller(&adap->dvb_adap);
int ret;
#endif
int i;
pr_debug("%s()\n", __func__);
@ -879,6 +884,21 @@ static int mxl111sf_attach_tuner(struct dvb_usb_adapter *adap)
adap->fe[i]->ops.read_signal_strength = adap->fe[i]->ops.tuner_ops.get_rf_strength;
}
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
state->tuner.function = MEDIA_ENT_F_TUNER;
state->tuner.name = "mxl111sf tuner";
state->tuner_pads[TUNER_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK;
state->tuner_pads[TUNER_PAD_IF_OUTPUT].flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&state->tuner,
TUNER_NUM_PADS, state->tuner_pads);
if (ret)
return ret;
ret = media_device_register_entity(mdev, &state->tuner);
if (ret)
return ret;
#endif
return 0;
}

5
drivers/media/usb/dvb-usb-v2/mxl111sf.h
View File

@ -17,6 +17,7 @@
#define DVB_USB_LOG_PREFIX "mxl111sf"
#include "dvb_usb.h"
#include <media/tveeprom.h>
#include <media/media-entity.h>
#define MXL_EP1_REG_READ 1
#define MXL_EP2_REG_WRITE 2
@ -85,6 +86,10 @@ struct mxl111sf_state {
struct mutex fe_lock;
u8 num_frontends;
struct mxl111sf_adap_state adap_state[3];
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
struct media_entity tuner;
struct media_pad tuner_pads[2];
#endif
};
int mxl111sf_read_reg(struct mxl111sf_state *state, u8 addr, u8 *data);

43
drivers/media/usb/dvb-usb/dvb-usb-dvb.c
View File

@ -95,17 +95,16 @@ static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
return dvb_usb_ctrl_feed(dvbdmxfeed, 0);
}
static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap)
static int dvb_usb_media_device_init(struct dvb_usb_adapter *adap)
{
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
struct media_device *mdev;
struct dvb_usb_device *d = adap->dev;
struct usb_device *udev = d->udev;
int ret;
mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
if (!mdev)
return;
return -ENOMEM;
mdev->dev = &udev->dev;
strlcpy(mdev->model, d->desc->name, sizeof(mdev->model));
@ -115,17 +114,21 @@ static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap)
mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
mdev->driver_version = LINUX_VERSION_CODE;
ret = media_device_register(mdev);
if (ret) {
dev_err(&d->udev->dev,
"Couldn't create a media device. Error: %d\n",
ret);
kfree(mdev);
return;
}
media_device_init(mdev);
dvb_register_media_controller(&adap->dvb_adap, mdev);
dev_info(&d->udev->dev, "media controller created\n");
#endif
return 0;
}
static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap)
{
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
return media_device_register(adap->dvb_adap.mdev);
#else
return 0;
#endif
}
@ -136,6 +139,7 @@ static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap)
return;
media_device_unregister(adap->dvb_adap.mdev);
media_device_cleanup(adap->dvb_adap.mdev);
kfree(adap->dvb_adap.mdev);
adap->dvb_adap.mdev = NULL;
#endif
@ -154,7 +158,11 @@ int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
}
adap->dvb_adap.priv = adap;
dvb_usb_media_device_register(adap);
ret = dvb_usb_media_device_init(adap);
if (ret < 0) {
deb_info("dvb_usb_media_device_init failed: error %d", ret);
goto err_mc;
}
if (adap->dev->props.read_mac_address) {
if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0)
@ -204,6 +212,7 @@ err_dmx_dev:
dvb_dmx_release(&adap->demux);
err_dmx:
dvb_usb_media_device_unregister(adap);
err_mc:
dvb_unregister_adapter(&adap->dvb_adap);
err:
return ret;
@ -318,10 +327,16 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap)
adap->num_frontends_initialized++;
}
if (ret)
return ret;
dvb_create_media_graph(&adap->dvb_adap);
ret = dvb_create_media_graph(&adap->dvb_adap, true);
if (ret)
return ret;
return 0;
ret = dvb_usb_media_device_register(adap);
return ret;
}
int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap)

5
drivers/media/usb/siano/smsusb.c
View File

@ -361,10 +361,11 @@ static void *siano_media_device_register(struct smsusb_device_t *dev,
mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
mdev->driver_version = LINUX_VERSION_CODE;
media_device_init(mdev);
ret = media_device_register(mdev);
if (ret) {
pr_err("Couldn't create a media device. Error: %d\n",
ret);
media_device_cleanup(mdev);
kfree(mdev);
return NULL;
}

11
drivers/media/usb/uvc/uvc_driver.c
View File

@ -1656,6 +1656,7 @@ static void uvc_delete(struct uvc_device *dev)
#ifdef CONFIG_MEDIA_CONTROLLER
if (media_devnode_is_registered(&dev->mdev.devnode))
media_device_unregister(&dev->mdev);
media_device_cleanup(&dev->mdev);
#endif
list_for_each_safe(p, n, &dev->chains) {
@ -1906,7 +1907,7 @@ static int uvc_probe(struct usb_interface *intf,
"linux-uvc-devel mailing list.\n");
}
/* Register the media and V4L2 devices. */
/* Initialize the media device and register the V4L2 device. */
#ifdef CONFIG_MEDIA_CONTROLLER
dev->mdev.dev = &intf->dev;
strlcpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model));
@ -1916,8 +1917,7 @@ static int uvc_probe(struct usb_interface *intf,
strcpy(dev->mdev.bus_info, udev->devpath);
dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
dev->mdev.driver_version = LINUX_VERSION_CODE;
if (media_device_register(&dev->mdev) < 0)
goto error;
media_device_init(&dev->mdev);
dev->vdev.mdev = &dev->mdev;
#endif
@ -1936,6 +1936,11 @@ static int uvc_probe(struct usb_interface *intf,
if (uvc_register_chains(dev) < 0)
goto error;
#ifdef CONFIG_MEDIA_CONTROLLER
/* Register the media device node */
if (media_device_register(&dev->mdev) < 0)
goto error;
#endif
/* Save our data pointer in the interface data. */
usb_set_intfdata(intf, dev);

Some files were not shown because too many files have changed in this diff Show More