Commit fb091be0 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (534 commits)
  V4L/DVB (13554a): v4l: Use the video_drvdata function in drivers
  V4L/DVB: vivi and mem2mem_testdev need slab.h to build
  V4L/DVB: tm6000: bugfix image position
  V4L/DVB: IR/imon: remove dead IMON_KEY_RELEASE_OFFSET
  V4L/DVB: tm6000: README - add vbi
  V4L/DVB: Fix unlock logic at medusa_video_init
  V4L/DVB: fix dvb frontend lockup
  V4L/DVB: s2255drv: remove dead code
  V4L/DVB: s2255drv: return if vdev not found
  V4L/DVB: ov511: cleanup: remove unneeded null check
  V4L/DVB: media/mem2mem: dereferencing free memory
  V4L/DVB: media/IR: Add missing include file to rc-map.c
  V4L/DVB: dvb/stv6110x: cleanup error handling
  V4L/DVB: ngene: Add lgdt3303 and mt2131 deps to Kconfig
  V4L/DVB: ngene: start separating out DVB functions into separate file
  V4L/DVB: ngene: split out card specific code into a separate file
  V4L/DVB: ngene: split out i2c code into a separate file
  V4L/DVB: ngene: add initial support for digital side of Avermedia m780
  V4L/DVB: ngene: properly support boards where channel 0 isn't a TS input
  V4L-DVB: ngene: make sure that tuner headers are included
  ...
parents bd7fc2f2 e8d04167
......@@ -17,6 +17,7 @@
<!ENTITY VIDIOC-DBG-G-REGISTER "<link linkend='vidioc-dbg-g-register'><constant>VIDIOC_DBG_G_REGISTER</constant></link>">
<!ENTITY VIDIOC-DBG-S-REGISTER "<link linkend='vidioc-dbg-g-register'><constant>VIDIOC_DBG_S_REGISTER</constant></link>">
<!ENTITY VIDIOC-DQBUF "<link linkend='vidioc-qbuf'><constant>VIDIOC_DQBUF</constant></link>">
<!ENTITY VIDIOC-DQEVENT "<link linkend='vidioc-dqevent'><constant>VIDIOC_DQEVENT</constant></link>">
<!ENTITY VIDIOC-ENCODER-CMD "<link linkend='vidioc-encoder-cmd'><constant>VIDIOC_ENCODER_CMD</constant></link>">
<!ENTITY VIDIOC-ENUMAUDIO "<link linkend='vidioc-enumaudio'><constant>VIDIOC_ENUMAUDIO</constant></link>">
<!ENTITY VIDIOC-ENUMAUDOUT "<link linkend='vidioc-enumaudioout'><constant>VIDIOC_ENUMAUDOUT</constant></link>">
......@@ -60,6 +61,7 @@
<!ENTITY VIDIOC-REQBUFS "<link linkend='vidioc-reqbufs'><constant>VIDIOC_REQBUFS</constant></link>">
<!ENTITY VIDIOC-STREAMOFF "<link linkend='vidioc-streamon'><constant>VIDIOC_STREAMOFF</constant></link>">
<!ENTITY VIDIOC-STREAMON "<link linkend='vidioc-streamon'><constant>VIDIOC_STREAMON</constant></link>">
<!ENTITY VIDIOC-SUBSCRIBE-EVENT "<link linkend='vidioc-subscribe-event'><constant>VIDIOC_SUBSCRIBE_EVENT</constant></link>">
<!ENTITY VIDIOC-S-AUDIO "<link linkend='vidioc-g-audio'><constant>VIDIOC_S_AUDIO</constant></link>">
<!ENTITY VIDIOC-S-AUDOUT "<link linkend='vidioc-g-audioout'><constant>VIDIOC_S_AUDOUT</constant></link>">
<!ENTITY VIDIOC-S-CROP "<link linkend='vidioc-g-crop'><constant>VIDIOC_S_CROP</constant></link>">
......@@ -83,6 +85,7 @@
<!ENTITY VIDIOC-TRY-ENCODER-CMD "<link linkend='vidioc-encoder-cmd'><constant>VIDIOC_TRY_ENCODER_CMD</constant></link>">
<!ENTITY VIDIOC-TRY-EXT-CTRLS "<link linkend='vidioc-g-ext-ctrls'><constant>VIDIOC_TRY_EXT_CTRLS</constant></link>">
<!ENTITY VIDIOC-TRY-FMT "<link linkend='vidioc-g-fmt'><constant>VIDIOC_TRY_FMT</constant></link>">
<!ENTITY VIDIOC-UNSUBSCRIBE-EVENT "<link linkend='vidioc-subscribe-event'><constant>VIDIOC_UNSUBSCRIBE_EVENT</constant></link>">
<!-- Types -->
<!ENTITY v4l2-std-id "<link linkend='v4l2-std-id'>v4l2_std_id</link>">
......@@ -141,6 +144,9 @@
<!ENTITY v4l2-enc-idx "struct&nbsp;<link linkend='v4l2-enc-idx'>v4l2_enc_idx</link>">
<!ENTITY v4l2-enc-idx-entry "struct&nbsp;<link linkend='v4l2-enc-idx-entry'>v4l2_enc_idx_entry</link>">
<!ENTITY v4l2-encoder-cmd "struct&nbsp;<link linkend='v4l2-encoder-cmd'>v4l2_encoder_cmd</link>">
<!ENTITY v4l2-event "struct&nbsp;<link linkend='v4l2-event'>v4l2_event</link>">
<!ENTITY v4l2-event-subscription "struct&nbsp;<link linkend='v4l2-event-subscription'>v4l2_event_subscription</link>">
<!ENTITY v4l2-event-vsync "struct&nbsp;<link linkend='v4l2-event-vsync'>v4l2_event_vsync</link>">
<!ENTITY v4l2-ext-control "struct&nbsp;<link linkend='v4l2-ext-control'>v4l2_ext_control</link>">
<!ENTITY v4l2-ext-controls "struct&nbsp;<link linkend='v4l2-ext-controls'>v4l2_ext_controls</link>">
<!ENTITY v4l2-fmtdesc "struct&nbsp;<link linkend='v4l2-fmtdesc'>v4l2_fmtdesc</link>">
......@@ -200,6 +206,7 @@
<!ENTITY sub-controls SYSTEM "v4l/controls.xml">
<!ENTITY sub-dev-capture SYSTEM "v4l/dev-capture.xml">
<!ENTITY sub-dev-codec SYSTEM "v4l/dev-codec.xml">
<!ENTITY sub-dev-event SYSTEM "v4l/dev-event.xml">
<!ENTITY sub-dev-effect SYSTEM "v4l/dev-effect.xml">
<!ENTITY sub-dev-osd SYSTEM "v4l/dev-osd.xml">
<!ENTITY sub-dev-output SYSTEM "v4l/dev-output.xml">
......@@ -292,6 +299,8 @@
<!ENTITY sub-v4l2grab-c SYSTEM "v4l/v4l2grab.c.xml">
<!ENTITY sub-videodev2-h SYSTEM "v4l/videodev2.h.xml">
<!ENTITY sub-v4l2 SYSTEM "v4l/v4l2.xml">
<!ENTITY sub-dqevent SYSTEM "v4l/vidioc-dqevent.xml">
<!ENTITY sub-subscribe-event SYSTEM "v4l/vidioc-subscribe-event.xml">
<!ENTITY sub-intro SYSTEM "dvb/intro.xml">
<!ENTITY sub-frontend SYSTEM "dvb/frontend.xml">
<!ENTITY sub-dvbproperty SYSTEM "dvb/dvbproperty.xml">
......@@ -381,3 +390,5 @@
<!ENTITY reqbufs SYSTEM "v4l/vidioc-reqbufs.xml">
<!ENTITY s-hw-freq-seek SYSTEM "v4l/vidioc-s-hw-freq-seek.xml">
<!ENTITY streamon SYSTEM "v4l/vidioc-streamon.xml">
<!ENTITY dqevent SYSTEM "v4l/vidioc-dqevent.xml">
<!ENTITY subscribe_event SYSTEM "v4l/vidioc-subscribe-event.xml">
......@@ -2332,6 +2332,17 @@ more information.</para>
</listitem>
</orderedlist>
</section>
<section>
<title>V4L2 in Linux 2.6.34</title>
<orderedlist>
<listitem>
<para>Added
<constant>V4L2_CID_IRIS_ABSOLUTE</constant> and
<constant>V4L2_CID_IRIS_RELATIVE</constant> controls to the
<link linkend="camera-controls">Camera controls class</link>.
</para>
</listitem>
</orderedlist>
</section>
<section id="other">
......@@ -2455,6 +2466,7 @@ interfaces and should not be implemented in new drivers.</para>
</listitem>
</itemizedlist>
</section>
</section>
<!--
Local Variables:
......
......@@ -266,6 +266,12 @@ minimum value disables backlight compensation.</entry>
<entry>boolean</entry>
<entry>Chroma automatic gain control.</entry>
</row>
<row>
<entry><constant>V4L2_CID_CHROMA_GAIN</constant></entry>
<entry>integer</entry>
<entry>Adjusts the Chroma gain control (for use when chroma AGC
is disabled).</entry>
</row>
<row>
<entry><constant>V4L2_CID_COLOR_KILLER</constant></entry>
<entry>boolean</entry>
......@@ -277,8 +283,15 @@ minimum value disables backlight compensation.</entry>
<entry>Selects a color effect. Possible values for
<constant>enum v4l2_colorfx</constant> are:
<constant>V4L2_COLORFX_NONE</constant> (0),
<constant>V4L2_COLORFX_BW</constant> (1) and
<constant>V4L2_COLORFX_SEPIA</constant> (2).</entry>
<constant>V4L2_COLORFX_BW</constant> (1),
<constant>V4L2_COLORFX_SEPIA</constant> (2),
<constant>V4L2_COLORFX_NEGATIVE</constant> (3),
<constant>V4L2_COLORFX_EMBOSS</constant> (4),
<constant>V4L2_COLORFX_SKETCH</constant> (5),
<constant>V4L2_COLORFX_SKY_BLUE</constant> (6),
<constant>V4L2_COLORFX_GRASS_GREEN</constant> (7),
<constant>V4L2_COLORFX_SKIN_WHITEN</constant> (8) and
<constant>V4L2_COLORFX_VIVID</constant> (9).</entry>
</row>
<row>
<entry><constant>V4L2_CID_ROTATE</constant></entry>
......@@ -1824,6 +1837,25 @@ wide-angle direction. The zoom speed unit is driver-specific.</entry>
</row>
<row><entry></entry></row>
<row>
<entry spanname="id"><constant>V4L2_CID_IRIS_ABSOLUTE</constant>&nbsp;</entry>
<entry>integer</entry>
</row><row><entry spanname="descr">This control sets the
camera's aperture to the specified value. The unit is undefined.
Larger values open the iris wider, smaller values close it.</entry>
</row>
<row><entry></entry></row>
<row>
<entry spanname="id"><constant>V4L2_CID_IRIS_RELATIVE</constant>&nbsp;</entry>
<entry>integer</entry>
</row><row><entry spanname="descr">This control modifies the
camera's aperture by the specified amount. The unit is undefined.
Positive values open the iris one step further, negative values close
it one step further. This is a write-only control.</entry>
</row>
<row><entry></entry></row>
<row>
<entry spanname="id"><constant>V4L2_CID_PRIVACY</constant>&nbsp;</entry>
<entry>boolean</entry>
......
<title>Event Interface</title>
<para>The V4L2 event interface provides means for user to get
immediately notified on certain conditions taking place on a device.
This might include start of frame or loss of signal events, for
example.
</para>
<para>To receive events, the events the user is interested in first must
be subscribed using the &VIDIOC-SUBSCRIBE-EVENT; ioctl. Once an event is
subscribed, the events of subscribed types are dequeueable using the
&VIDIOC-DQEVENT; ioctl. Events may be unsubscribed using
VIDIOC_UNSUBSCRIBE_EVENT ioctl. The special event type V4L2_EVENT_ALL may
be used to unsubscribe all the events the driver supports.</para>
<para>The event subscriptions and event queues are specific to file
handles. Subscribing an event on one file handle does not affect
other file handles.
</para>
<para>The information on dequeueable events is obtained by using select or
poll system calls on video devices. The V4L2 events use POLLPRI events on
poll system call and exceptions on select system call. </para>
<!--
Local Variables:
mode: sgml
sgml-parent-document: "v4l2.sgml"
indent-tabs-mode: nil
End:
-->
......@@ -701,6 +701,16 @@ buffer cannot be on both queues at the same time, the
They can be both cleared however, then the buffer is in "dequeued"
state, in the application domain to say so.</entry>
</row>
<row>
<entry><constant>V4L2_BUF_FLAG_ERROR</constant></entry>
<entry>0x0040</entry>
<entry>When this flag is set, the buffer has been dequeued
successfully, although the data might have been corrupted.
This is recoverable, streaming may continue as normal and
the buffer may be reused normally.
Drivers set this flag when the <constant>VIDIOC_DQBUF</constant>
ioctl is called.</entry>
</row>
<row>
<entry><constant>V4L2_BUF_FLAG_KEYFRAME</constant></entry>
<entry>0x0008</entry>
......@@ -918,8 +928,8 @@ order</emphasis>.</para>
<para>When the driver provides or accepts images field by field
rather than interleaved, it is also important applications understand
how the fields combine to frames. We distinguish between top and
bottom fields, the <emphasis>spatial order</emphasis>: The first line
how the fields combine to frames. We distinguish between top (aka odd) and
bottom (aka even) fields, the <emphasis>spatial order</emphasis>: The first line
of the top field is the first line of an interlaced frame, the first
line of the bottom field is the second line of that frame.</para>
......@@ -972,12 +982,12 @@ between <constant>V4L2_FIELD_TOP</constant> and
<row>
<entry><constant>V4L2_FIELD_TOP</constant></entry>
<entry>2</entry>
<entry>Images consist of the top field only.</entry>
<entry>Images consist of the top (aka odd) field only.</entry>
</row>
<row>
<entry><constant>V4L2_FIELD_BOTTOM</constant></entry>
<entry>3</entry>
<entry>Images consist of the bottom field only.
<entry>Images consist of the bottom (aka even) field only.
Applications may wish to prevent a device from capturing interlaced
images because they will have "comb" or "feathering" artefacts around
moving objects.</entry>
......
......@@ -792,6 +792,18 @@ http://www.thedirks.org/winnov/</ulink></para></entry>
<entry>'YYUV'</entry>
<entry>unknown</entry>
</row>
<row id="V4L2-PIX-FMT-Y4">
<entry><constant>V4L2_PIX_FMT_Y4</constant></entry>
<entry>'Y04 '</entry>
<entry>Old 4-bit greyscale format. Only the least significant 4 bits of each byte are used,
the other bits are set to 0.</entry>
</row>
<row id="V4L2-PIX-FMT-Y6">
<entry><constant>V4L2_PIX_FMT_Y6</constant></entry>
<entry>'Y06 '</entry>
<entry>Old 6-bit greyscale format. Only the least significant 6 bits of each byte are used,
the other bits are set to 0.</entry>
</row>
</tbody>
</tgroup>
</table>
......
......@@ -401,6 +401,7 @@ and discussions on the V4L mailing list.</revremark>
<section id="ttx"> &sub-dev-teletext; </section>
<section id="radio"> &sub-dev-radio; </section>
<section id="rds"> &sub-dev-rds; </section>
<section id="event"> &sub-dev-event; </section>
</chapter>
<chapter id="driver">
......@@ -426,6 +427,7 @@ and discussions on the V4L mailing list.</revremark>
&sub-cropcap;
&sub-dbg-g-chip-ident;
&sub-dbg-g-register;
&sub-dqevent;
&sub-encoder-cmd;
&sub-enumaudio;
&sub-enumaudioout;
......@@ -467,6 +469,7 @@ and discussions on the V4L mailing list.</revremark>
&sub-reqbufs;
&sub-s-hw-freq-seek;
&sub-streamon;
&sub-subscribe-event;
<!-- End of ioctls. -->
&sub-mmap;
&sub-munmap;
......
......@@ -1018,6 +1018,13 @@ enum <link linkend="v4l2-colorfx">v4l2_colorfx</link> {
V4L2_COLORFX_NONE = 0,
V4L2_COLORFX_BW = 1,
V4L2_COLORFX_SEPIA = 2,
V4L2_COLORFX_NEGATIVE = 3,
V4L2_COLORFX_EMBOSS = 4,
V4L2_COLORFX_SKETCH = 5,
V4L2_COLORFX_SKY_BLUE = 6,
V4L2_COLORFX_GRASS_GREEN = 7,
V4L2_COLORFX_SKIN_WHITEN = 8,
V4L2_COLORFX_VIVID = 9.
};
#define V4L2_CID_AUTOBRIGHTNESS (V4L2_CID_BASE+32)
#define V4L2_CID_BAND_STOP_FILTER (V4L2_CID_BASE+33)
......@@ -1271,6 +1278,9 @@ enum <link linkend="v4l2-exposure-auto-type">v4l2_exposure_auto_type</link> {
#define V4L2_CID_PRIVACY (V4L2_CID_CAMERA_CLASS_BASE+16)
#define V4L2_CID_IRIS_ABSOLUTE (V4L2_CID_CAMERA_CLASS_BASE+17)
#define V4L2_CID_IRIS_RELATIVE (V4L2_CID_CAMERA_CLASS_BASE+18)
/* FM Modulator class control IDs */
#define V4L2_CID_FM_TX_CLASS_BASE (V4L2_CTRL_CLASS_FM_TX | 0x900)
#define V4L2_CID_FM_TX_CLASS (V4L2_CTRL_CLASS_FM_TX | 1)
......
<refentry id="vidioc-dqevent">
<refmeta>
<refentrytitle>ioctl VIDIOC_DQEVENT</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname>VIDIOC_DQEVENT</refname>
<refpurpose>Dequeue event</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 v4l2_event
*<parameter>argp</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Arguments</title>
<variablelist>
<varlistentry>
<term><parameter>fd</parameter></term>
<listitem>
<para>&fd;</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>request</parameter></term>
<listitem>
<para>VIDIOC_DQEVENT</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>argp</parameter></term>
<listitem>
<para></para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Description</title>
<para>Dequeue an event from a video device. No input is required
for this ioctl. All the fields of the &v4l2-event; structure are
filled by the driver. The file handle will also receive exceptions
which the application may get by e.g. using the select system
call.</para>
<table frame="none" pgwide="1" id="v4l2-event">
<title>struct <structname>v4l2_event</structname></title>
<tgroup cols="4">
&cs-str;
<tbody valign="top">
<row>
<entry>__u32</entry>
<entry><structfield>type</structfield></entry>
<entry></entry>
<entry>Type of the event.</entry>
</row>
<row>
<entry>union</entry>
<entry><structfield>u</structfield></entry>
<entry></entry>
<entry></entry>
</row>
<row>
<entry></entry>
<entry>&v4l2-event-vsync;</entry>
<entry><structfield>vsync</structfield></entry>
<entry>Event data for event V4L2_EVENT_VSYNC.
</entry>
</row>
<row>
<entry></entry>
<entry>__u8</entry>
<entry><structfield>data</structfield>[64]</entry>
<entry>Event data. Defined by the event type. The union
should be used to define easily accessible type for
events.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>pending</structfield></entry>
<entry></entry>
<entry>Number of pending events excluding this one.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>sequence</structfield></entry>
<entry></entry>
<entry>Event sequence number. The sequence number is
incremented for every subscribed event that takes place.
If sequence numbers are not contiguous it means that
events have been lost.
</entry>
</row>
<row>
<entry>struct timespec</entry>
<entry><structfield>timestamp</structfield></entry>
<entry></entry>
<entry>Event timestamp.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[9]</entry>
<entry></entry>
<entry>Reserved for future extensions. Drivers must set
the array to zero.</entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1>
</refentry>
<!--
Local Variables:
mode: sgml
sgml-parent-document: "v4l2.sgml"
indent-tabs-mode: nil
End:
-->
......@@ -283,7 +283,7 @@ input/output interface to linux-media@vger.kernel.org on 19 Oct 2009.
<entry>This input supports setting DV presets by using VIDIOC_S_DV_PRESET.</entry>
</row>
<row>
<entry><constant>V4L2_OUT_CAP_CUSTOM_TIMINGS</constant></entry>
<entry><constant>V4L2_IN_CAP_CUSTOM_TIMINGS</constant></entry>
<entry>0x00000002</entry>
<entry>This input supports setting custom video timings by using VIDIOC_S_DV_TIMINGS.</entry>
</row>
......
......@@ -111,7 +111,11 @@ from the driver's outgoing queue. They just set the
and <structfield>reserved</structfield>
fields of a &v4l2-buffer; as above, when <constant>VIDIOC_DQBUF</constant>
is called with a pointer to this structure the driver fills the
remaining fields or returns an error code.</para>
remaining fields or returns an error code. The driver may also set
<constant>V4L2_BUF_FLAG_ERROR</constant> in the <structfield>flags</structfield>
field. It indicates a non-critical (recoverable) streaming error. In such case
the application may continue as normal, but should be aware that data in the
dequeued buffer might be corrupted.</para>
<para>By default <constant>VIDIOC_DQBUF</constant> blocks when no
buffer is in the outgoing queue. When the
......@@ -158,7 +162,13 @@ enqueue a user pointer buffer.</para>
<para><constant>VIDIOC_DQBUF</constant> failed due to an
internal error. Can also indicate temporary problems like signal
loss. Note the driver might dequeue an (empty) buffer despite
returning an error, or even stop capturing.</para>
returning an error, or even stop capturing. Reusing such buffer may be unsafe
though and its details (e.g. <structfield>index</structfield>) may not be
returned either. It is recommended that drivers indicate recoverable errors
by setting the <constant>V4L2_BUF_FLAG_ERROR</constant> and returning 0 instead.
In that case the application should be able to safely reuse the buffer and
continue streaming.
</para>
</listitem>
</varlistentry>
</variablelist>
......
......@@ -325,7 +325,7 @@ should be part of the control documentation.</entry>
<entry>n/a</entry>
<entry>This is not a control. When
<constant>VIDIOC_QUERYCTRL</constant> is called with a control ID
equal to a control class code (see <xref linkend="ctrl-class" />), the
equal to a control class code (see <xref linkend="ctrl-class" />) + 1, the
ioctl returns the name of the control class and this control type.
Older drivers which do not support this feature return an
&EINVAL;.</entry>
......
......@@ -61,7 +61,7 @@ fields of the <structname>v4l2_requestbuffers</structname> structure.
They set the <structfield>type</structfield> field to the respective
stream or buffer type, the <structfield>count</structfield> field to
the desired number of buffers, <structfield>memory</structfield>
must be set to the requested I/O method and the reserved array
must be set to the requested I/O method and the <structfield>reserved</structfield> array
must be zeroed. When the ioctl
is called with a pointer to this structure the driver will attempt to allocate
the requested number of buffers and it stores the actual number
......
<refentry id="vidioc-subscribe-event">
<refmeta>
<refentrytitle>ioctl VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</refname>
<refpurpose>Subscribe or unsubscribe event</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 v4l2_event_subscription
*<parameter>argp</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Arguments</title>
<variablelist>
<varlistentry>
<term><parameter>fd</parameter></term>
<listitem>
<para>&fd;</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>request</parameter></term>
<listitem>
<para>VIDIOC_SUBSCRIBE_EVENT, VIDIOC_UNSUBSCRIBE_EVENT</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>argp</parameter></term>
<listitem>
<para></para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Description</title>
<para>Subscribe or unsubscribe V4L2 event. Subscribed events are
dequeued by using the &VIDIOC-DQEVENT; ioctl.</para>
<table frame="none" pgwide="1" id="v4l2-event-subscription">
<title>struct <structname>v4l2_event_subscription</structname></title>
<tgroup cols="3">
&cs-str;
<tbody valign="top">
<row>
<entry>__u32</entry>
<entry><structfield>type</structfield></entry>
<entry>Type of the event.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[7]</entry>
<entry>Reserved for future extensions. Drivers and applications
must set the array to zero.</entry>
</row>
</tbody>
</tgroup>
</table>
<table frame="none" pgwide="1" id="event-type">
<title>Event Types</title>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
<row>
<entry><constant>V4L2_EVENT_ALL</constant></entry>
<entry>0</entry>
<entry>All events. V4L2_EVENT_ALL is valid only for
VIDIOC_UNSUBSCRIBE_EVENT for unsubscribing all events at once.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_VSYNC</constant></entry>
<entry>1</entry>
<entry>This event is triggered on the vertical sync.
This event has &v4l2-event-vsync; associated with it.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_EOS</constant></entry>
<entry>2</entry>
<entry>This event is triggered when the end of a stream is reached.
This is typically used with MPEG decoders to report to the application
when the last of the MPEG stream has been decoded.
</entry>
</row>
<row>
<entry><constant>V4L2_EVENT_PRIVATE_START</constant></entry>
<entry>0x08000000</entry>
<entry>Base event number for driver-private events.</entry>
</row>
</tbody>
</tgroup>
</table>
<table frame="none" pgwide="1" id="v4l2-event-vsync">
<title>struct <structname>v4l2_event_vsync</structname></title>
<tgroup cols="3">
&cs-str;
<tbody valign="top">
<row>
<entry>__u8</entry>
<entry><structfield>field</structfield></entry>
<entry>The upcoming field. See &v4l2-field;.</entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1>
</refentry>
<!--
Local Variables:
mode: sgml
sgml-parent-document: "v4l2.sgml"
indent-tabs-mode: nil
End:
-->
......@@ -100,7 +100,7 @@
99 -> AD-TVK503
100 -> Hercules Smart TV Stereo
101 -> Pace TV & Radio Card
102 -> IVC-200 [0000:a155,0001:a155,0002:a155,0003:a155,0100:a155,0101:a155,0102:a155,0103:a155]
102 -> IVC-200 [0000:a155,0001:a155,0002:a155,0003:a155,0100:a155,0101:a155,0102:a155,0103:a155,0800:a155,0801:a155,0802:a155,0803:a155]
103 -> Grand X-Guard / Trust 814PCI [0304:0102]
104 -> Nebula Electronics DigiTV [0071:0101]
105 -> ProVideo PV143 [aa00:1430,aa00:1431,aa00:1432,aa00:1433,aa03:1433]
......
......@@ -82,3 +82,4 @@
81 -> Leadtek WinFast DTV1800 Hybrid [107d:6654]
82 -> WinFast DTV2000 H rev. J [107d:6f2b]
83 -> Prof 7301 DVB-S/S2 [b034:3034]
84 -> Samsung SMT 7020 DVB-S [18ac:dc00,18ac:dccd]
0 -> Unknown EM2800 video grabber (em2800) [eb1a:2800]
1 -> Unknown EM2750/28xx video grabber (em2820/em2840) [eb1a:2710,eb1a:2820,eb1a:2821,eb1a:2860,eb1a:2861,eb1a:2862,eb1a:2870,eb1a:2881,eb1a:2883,eb1a:2868]
1 -> Unknown EM2750/28xx video grabber (em2820/em2840) [eb1a:2710,eb1a:2820,eb1a:2821,eb1a:2860,eb1a:2861,eb1a:2862,eb1a:2863,eb1a:2870,eb1a:2881,eb1a:2883,eb1a:2868]
2 -> Terratec Cinergy 250 USB (em2820/em2840) [0ccd:0036]
3 -> Pinnacle PCTV USB 2 (em2820/em2840) [2304:0208]
4 -> Hauppauge WinTV USB 2 (em2820/em2840) [2040:4200,2040:4201]
......@@ -27,6 +27,7 @@
26 -> Hercules Smart TV USB 2.0 (em2820/em2840)
27 -> Pinnacle PCTV USB 2 (Philips FM1216ME) (em2820/em2840)
28 -> Leadtek Winfast USB II Deluxe (em2820/em2840)
29 -> EM2860/TVP5150 Reference Design (em2860)
30 -> Videology 20K14XUSB USB2.0 (em2820/em2840)
31 -> Usbgear VD204v9 (em2821)
32 -> Supercomp USB 2.0 TV (em2821)
......@@ -70,3 +71,4 @@
72 -> Gadmei UTV330+ (em2861)
73 -> Reddo DVB-C USB TV Box (em2870)
74 -> Actionmaster/LinXcel/Digitus VC211A (em2800)
75 -> Dikom DK300 (em2882)
......@@ -175,3 +175,6 @@
174 -> Asus Europa Hybrid OEM [1043:4847]
175 -> Leadtek Winfast DTV1000S [107d:6655]
176 -> Beholder BeholdTV 505 RDS [0000:5051]
177 -> Hawell HW-404M7
179 -> Beholder BeholdTV H7 [5ace:7190]
180 -> Beholder BeholdTV A7 [5ace:7090]
This diff is collapsed.
......@@ -50,6 +50,8 @@ zc3xx 0458:700f Genius VideoCam Web V2
sonixj 0458:7025 Genius Eye 311Q
sn9c20x 0458:7029 Genius Look 320s
sonixj 0458:702e Genius Slim 310 NB
sn9c20x 0458:704a Genius Slim 1320
sn9c20x 0458:704c Genius i-Look 1321
sn9c20x 045e:00f4 LifeCam VX-6000 (SN9C20x + OV9650)
sonixj 045e:00f5 MicroSoft VX3000
sonixj 045e:00f7 MicroSoft VX1000
......@@ -305,12 +307,14 @@ sonixj 0c45:6138 Sn9c120 Mo4000
sonixj 0c45:613a Microdia Sonix PC Camera
sonixj 0c45:613b Surfer SN-206
sonixj 0c45:613c Sonix Pccam168
sonixj 0c45:6142 Hama PC-Webcam AC-150
sonixj 0c45:6143 Sonix Pccam168
sonixj 0c45:6148 Digitus DA-70811/ZSMC USB PC Camera ZS211/Microdia
sonixj 0c45:614a Frontech E-Ccam (JIL-2225)
sn9c20x 0c45:6240 PC Camera (SN9C201 + MT9M001)
sn9c20x 0c45:6242 PC Camera (SN9C201 + MT9M111)
sn9c20x 0c45:6248 PC Camera (SN9C201 + OV9655)
sn9c20x 0c45:624c PC Camera (SN9C201 + MT9M112)
sn9c20x 0c45:624e PC Camera (SN9C201 + SOI968)
sn9c20x 0c45:624f PC Camera (SN9C201 + OV9650)
sn9c20x 0c45:6251 PC Camera (SN9C201 + OV9650)
......@@ -323,6 +327,7 @@ sn9c20x 0c45:627f PC Camera (SN9C201 + OV9650)
sn9c20x 0c45:6280 PC Camera (SN9C202 + MT9M001)
sn9c20x 0c45:6282 PC Camera (SN9C202 + MT9M111)
sn9c20x 0c45:6288 PC Camera (SN9C202 + OV9655)
sn9c20x 0c45:628c PC Camera (SN9C201 + MT9M112)
sn9c20x 0c45:628e PC Camera (SN9C202 + SOI968)
sn9c20x 0c45:628f PC Camera (SN9C202 + OV9650)
sn9c20x 0c45:62a0 PC Camera (SN9C202 + OV7670)
......
......@@ -17,18 +17,18 @@ Generic scaling / cropping scheme
-2-- -\
| --\
| --\
+-5-- -\ -- -3--
| ---\
| --- -4-- -\
| -\
| - -6--
+-5-- . -- -3-- -\
| `... -\
| `... -4-- . - -7..
| `.
| `. .6--
|
| - -6'-
| -/
| --- -4'- -/
| ---/
+-5'- -/
| -- -3'-
| . .6'-
|
| ... -4'- .´
| ...´ - -7'.
+-5'- -/
| -- -3'- -/
| --/
| --/
-2'- -/
......@@ -36,7 +36,11 @@ Generic scaling / cropping scheme
|
-1'-
Produced by user requests:
In the above chart minuses and slashes represent "real" data amounts, points and
accents represent "useful" data, basically, CEU scaled amd cropped output,
mapped back onto the client's source plane.
Such a configuration can be produced by user requests:
S_CROP(left / top = (5) - (1), width / height = (5') - (5))
S_FMT(width / height = (6') - (6))
......@@ -106,52 +110,30 @@ window:
S_CROP
------
If old scale applied to new crop is invalid produce nearest new scale possible
1. Calculate current combined scales.
scale_comb = (((4') - (4)) / ((6') - (6))) * (((2') - (2)) / ((3') - (3)))
2. Apply iterative sensor S_CROP for new input window.
3. If old combined scales applied to new crop produce an impossible user window,
adjust scales to produce nearest possible window.
width_u_out = ((5') - (5)) / scale_comb
The API at http://v4l2spec.bytesex.org/spec/x1904.htm says:
if (width_u_out > max)
scale_comb = ((5') - (5)) / max;
else if (width_u_out < min)
scale_comb = ((5') - (5)) / min;
"...specification does not define an origin or units. However by convention
drivers should horizontally count unscaled samples relative to 0H."
4. Issue G_CROP to retrieve actual input window.
We choose to follow the advise and interpret cropping units as client input
pixels.
5. Using actual input window and calculated combined scales calculate sensor
target output window.
width_s_out = ((3') - (3)) = ((2') - (2)) / scale_comb
6. Apply iterative S_FMT for new sensor target output window.
7. Issue G_FMT to retrieve the actual sensor output window.
8. Calculate sensor scales.
scale_s = ((3') - (3)) / ((2') - (2))
Cropping is performed in the following 6 steps:
9. Calculate sensor output subwindow to be cropped on CEU by applying sensor
scales to the requested window.
1. Request exactly user rectangle from the sensor.
width_ceu = ((5') - (5)) / scale_s
2. If smaller - iterate until a larger one is obtained. Result: sensor cropped
to 2 : 2', target crop 5 : 5', current output format 6' - 6.
10. Use CEU cropping for above calculated window.
3. In the previous step the sensor has tried to preserve its output frame as
good as possible, but it could have changed. Retrieve it again.
11. Calculate CEU scales from sensor scales from results of (10) and user window
from (3)
4. Sensor scaled to 3 : 3'. Sensor's scale is (2' - 2) / (3' - 3). Calculate
intermediate window: 4' - 4 = (5' - 5) * (3' - 3) / (2' - 2)
scale_ceu = calc_scale(((5') - (5)), &width_u_out)
5. Calculate and apply host scale = (6' - 6) / (4' - 4)
12. Apply CEU scales.
6. Calculate and apply host crop: 6 - 7 = (5 - 2) * (6' - 6) / (5' - 5)
--
Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
......@@ -545,12 +545,11 @@ unregister them:
This will remove the device nodes from sysfs (causing udev to remove them
from /dev).
After video_unregister_device() returns no new opens can be done.
However, in the case of USB devices some application might still have one
of these device nodes open. You should block all new accesses to read,
write, poll, etc. except possibly for certain ioctl operations like
queueing buffers.
After video_unregister_device() returns no new opens can be done. However,
in the case of USB devices some application might still have one of these
device nodes open. So after the unregister all file operations will return
an error as well, except for the ioctl and unlocked_ioctl file operations:
those will still be passed on since some buffer ioctls may still be needed.
When the last user of the video device node exits, then the vdev->release()
callback is called and you can do the final cleanup there.
......@@ -609,3 +608,135 @@ scatter/gather method (videobuf-dma-sg), DMA with linear access
Please see Documentation/video4linux/videobuf for more information on how
to use the videobuf layer.
struct v4l2_fh
--------------
struct v4l2_fh provides a way to easily keep file handle specific data
that is used by the V4L2 framework. Using v4l2_fh is optional for
drivers.
The users of v4l2_fh (in the V4L2 framework, not the driver) know
whether a driver uses v4l2_fh as its file->private_data pointer by
testing the V4L2_FL_USES_V4L2_FH bit in video_device->flags.
Useful functions:
- v4l2_fh_init()
Initialise the file handle. This *MUST* be performed in the driver's
v4l2_file_operations->open() handler.
- v4l2_fh_add()
Add a v4l2_fh to video_device file handle list. May be called after
initialising the file handle.
- v4l2_fh_del()
Unassociate the file handle from video_device(). The file handle
exit function may now be called.
- v4l2_fh_exit()
Uninitialise the file handle. After uninitialisation the v4l2_fh
memory can be freed.
struct v4l2_fh is allocated as a part of the driver's own file handle
structure and is set to file->private_data in the driver's open
function by the driver. Drivers can extract their own file handle
structure by using the container_of macro. Example:
struct my_fh {
int blah;
struct v4l2_fh fh;
};
...
int my_open(struct file *file)
{
struct my_fh *my_fh;
struct video_device *vfd;
int ret;
...
ret = v4l2_fh_init(&my_fh->fh, vfd);
if (ret)
return ret;
v4l2_fh_add(&my_fh->fh);
file->private_data = &my_fh->fh;
...
}
int my_release(struct file *file)
{
struct v4l2_fh *fh = file->private_data;
struct my_fh *my_fh = container_of(fh, struct my_fh, fh);
...
}
V4L2 events
-----------
The V4L2 events provide a generic way to pass events to user space.
The driver must use v4l2_fh to be able to support V4L2 events.
Useful functions:
- v4l2_event_alloc()
To use events, the driver must allocate events for the file handle. By
calling the function more than once, the driver may assure that at least n
events in total have been allocated. The function may not be called in
atomic context.
- v4l2_event_queue()
Queue events to video device. The driver's only responsibility is to fill
in the type and the data fields. The other fields will be filled in by
V4L2.
- v4l2_event_subscribe()
The video_device->ioctl_ops->vidioc_subscribe_event must check the driver
is able to produce events with specified event id. Then it calls
v4l2_event_subscribe() to subscribe the event.
- v4l2_event_unsubscribe()
vidioc_unsubscribe_event in struct v4l2_ioctl_ops. A driver may use
v4l2_event_unsubscribe() directly unless it wants to be involved in
unsubscription process.
The special type V4L2_EVENT_ALL may be used to unsubscribe all events. The
drivers may want to handle this in a special way.
- v4l2_event_pending()
Returns the number of pending events. Useful when implementing poll.
Drivers do not initialise events directly. The events are initialised
through v4l2_fh_init() if video_device->ioctl_ops->vidioc_subscribe_event is
non-NULL. This *MUST* be performed in the driver's
v4l2_file_operations->open() handler.
Events are delivered to user space through the poll system call. The driver
can use v4l2_fh->events->wait wait_queue_head_t as the argument for
poll_wait().
There are standard and private events. New standard events must use the
smallest available event type. The drivers must allocate their events from
their own class starting from class base. Class base is
V4L2_EVENT_PRIVATE_START + n * 1000 where n is the lowest available number.
The first event type in the class is reserved for future use, so the first
available event type is 'class base + 1'.
An example on how the V4L2 events may be used can be found in the OMAP
3 ISP driver available at <URL:http://gitorious.org/omap3camera> as of
writing this.
......@@ -5963,7 +5963,7 @@ M: Laurent Pinchart <laurent.pinchart@skynet.be>
L: linux-uvc-devel@lists.berlios.de (subscribers-only)
L: linux-media@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6.git
W: http://linux-uvc.berlios.de
W: http://www.ideasonboard.org/uvc/
S: Maintained
F: drivers/media/video/uvc/
......
......@@ -7,3 +7,62 @@ config VIDEO_IR
tristate
depends on IR_CORE
default IR_CORE
source "drivers/media/IR/keymaps/Kconfig"
config IR_NEC_DECODER
tristate "Enable IR raw decoder for the NEC protocol"
depends on IR_CORE
default y
---help---
Enable this option if you have IR with NEC protocol, and
if the IR is decoded in software
config IR_RC5_DECODER
tristate "Enable IR raw decoder for the RC-5 protocol"
depends on IR_CORE
default y
---help---
Enable this option if you have IR with RC-5 protocol, and
if the IR is decoded in software
config IR_RC6_DECODER
tristate "Enable IR raw decoder for the RC6 protocol"
depends on IR_CORE
default y
---help---
Enable this option if you have an infrared remote control which
uses the RC6 protocol, and you need software decoding support.
config IR_JVC_DECODER
tristate "Enable IR raw decoder for the JVC protocol"
depends on IR_CORE
default y
---help---
Enable this option if you have an infrared remote control which
uses the JVC protocol, and you need software decoding support.
config IR_SONY_DECODER
tristate "Enable IR raw decoder for the Sony protocol"
depends on IR_CORE
default y
---help---
Enable this option if you have an infrared remote control which
uses the Sony protocol, and you need software decoding support.
config IR_IMON
tristate "SoundGraph iMON Receiver and Display"
depends on USB_ARCH_HAS_HCD
depends on IR_CORE
select USB
---help---
Say Y here if you want to use a SoundGraph iMON (aka Antec Veris)
IR Receiver and/or LCD/VFD/VGA display.
To compile this driver as a module, choose M here: the
module will be called imon.
ir-common-objs := ir-functions.o ir-keymaps.o
ir-core-objs := ir-keytable.o ir-sysfs.o
ir-common-objs := ir-functions.o
ir-core-objs := ir-keytable.o ir-sysfs.o ir-raw-event.o rc-map.o
obj-y += keymaps/
obj-$(CONFIG_IR_CORE) += ir-core.o
obj-$(CONFIG_VIDEO_IR) += ir-common.o
obj-$(CONFIG_IR_NEC_DECODER) += ir-nec-decoder.o
obj-$(CONFIG_IR_RC5_DECODER) += ir-rc5-decoder.o
obj-$(CONFIG_IR_RC6_DECODER) += ir-rc6-decoder.o
obj-$(CONFIG_IR_JVC_DECODER) += ir-jvc-decoder.o
obj-$(CONFIG_IR_SONY_DECODER) += ir-sony-decoder.o
# stand-alone IR receivers/transmitters
obj-$(CONFIG_IR_IMON) += imon.o
This diff is collapsed.
/*
* Remote Controller core raw events header
*
* Copyright (C) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _IR_RAW_EVENT
#define _IR_RAW_EVENT
#include <linux/slab.h>
#include <media/ir-core.h>
struct ir_raw_handler {
struct list_head list;
int (*decode)(struct input_dev *input_dev, struct ir_raw_event event);
int (*raw_register)(struct input_dev *input_dev);
int (*raw_unregister)(struct input_dev *input_dev);
};
struct ir_raw_event_ctrl {
struct work_struct rx_work; /* for the rx decoding workqueue */
struct kfifo kfifo; /* fifo for the pulse/space durations */
ktime_t last_event; /* when last event occurred */
enum raw_event_type last_type; /* last event type */
struct input_dev *input_dev; /* pointer to the parent input_dev */
};
/* macros for IR decoders */
static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin)
{
return d1 > (d2 - margin);
}
static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin)
{
return ((d1 > (d2 - margin)) && (d1 < (d2 + margin)));
}
static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y)
{
return x->pulse != y->pulse;
}
static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration)
{
if (duration > ev->duration)
ev->duration = 0;
else
ev->duration -= duration;
}
#define TO_US(duration) (((duration) + 500) / 1000)
#define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space")
#define IS_RESET(ev) (ev.duration == 0)
/*
* Routines from ir-sysfs.c - Meant to be called only internally inside
* ir-core
*/
int ir_register_class(struct input_dev *input_dev);
void ir_unregister_class(struct input_dev *input_dev);
/*
* Routines from ir-raw-event.c to be used internally and by decoders
*/
int ir_raw_event_register(struct input_dev *input_dev);
void ir_raw_event_unregister(struct input_dev *input_dev);
int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler);
void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler);
void ir_raw_init(void);
/*
* Decoder initialization code
*
* Those load logic are called during ir-core init, and automatically
* loads the compiled decoders for their usage with IR raw events
*/
/* from ir-nec-decoder.c */
#ifdef CONFIG_IR_NEC_DECODER_MODULE
#define load_nec_decode() request_module("ir-nec-decoder")
#else
#define load_nec_decode() 0
#endif
/* from ir-rc5-decoder.c */
#ifdef CONFIG_IR_RC5_DECODER_MODULE
#define load_rc5_decode() request_module("ir-rc5-decoder")
#else
#define load_rc5_decode() 0
#endif
/* from ir-rc6-decoder.c */
#ifdef CONFIG_IR_RC6_DECODER_MODULE
#define load_rc6_decode() request_module("ir-rc6-decoder")
#else
#define load_rc6_decode() 0
#endif
/* from ir-jvc-decoder.c */
#ifdef CONFIG_IR_JVC_DECODER_MODULE
#define load_jvc_decode() request_module("ir-jvc-decoder")
#else
#define load_jvc_decode() 0
#endif
/* from ir-sony-decoder.c */
#ifdef CONFIG_IR_SONY_DECODER_MODULE
#define load_sony_decode() request_module("ir-sony-decoder")
#else
#define load_sony_decode() 0
#endif
#endif /* _IR_RAW_EVENT */
......@@ -24,6 +24,7 @@
#include <linux/string.h>
#include <linux/jiffies.h>
#include <media/ir-common.h>
#include "ir-core-priv.h"
/* -------------------------------------------------------------------------- */
......
/* ir-jvc-decoder.c - handle JVC IR Pulse/Space protocol
*
* Copyright (C) 2010 by David Härdeman <david@hardeman.nu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/bitrev.h>
#include "ir-core-priv.h"
#define JVC_NBITS 16 /* dev(8) + func(8) */
#define JVC_UNIT 525000 /* ns */
#define JVC_HEADER_PULSE (16 * JVC_UNIT) /* lack of header -> repeat */
#define JVC_HEADER_SPACE (8 * JVC_UNIT)
#define JVC_BIT_PULSE (1 * JVC_UNIT)
#define JVC_BIT_0_SPACE (1 * JVC_UNIT)
#define JVC_BIT_1_SPACE (3 * JVC_UNIT)
#define JVC_TRAILER_PULSE (1 * JVC_UNIT)
#define JVC_TRAILER_SPACE (35 * JVC_UNIT)
/* Used to register jvc_decoder clients */
static LIST_HEAD(decoder_list);
DEFINE_SPINLOCK(decoder_lock);
enum jvc_state {
STATE_INACTIVE,
STATE_HEADER_SPACE,
STATE_BIT_PULSE,
STATE_BIT_SPACE,
STATE_TRAILER_PULSE,
STATE_TRAILER_SPACE,
};
struct decoder_data {
struct list_head list;
struct ir_input_dev *ir_dev;
int enabled:1;
/* State machine control */
enum jvc_state state;
u16 jvc_bits;
u16 jvc_old_bits;
unsigned count;
bool first;
bool toggle;
};
/**
* get_decoder_data() - gets decoder data
* @input_dev: input device
*
* Returns the struct decoder_data that corresponds to a device
*/
static struct decoder_data *get_decoder_data(struct ir_input_dev *ir_dev)
{
struct decoder_data *data = NULL;
spin_lock(&decoder_lock);
list_for_each_entry(data, &decoder_list, list) {
if (data->ir_dev == ir_dev)
break;
}
spin_unlock(&decoder_lock);
return data;
}
static ssize_t store_enabled(struct device *d,
struct device_attribute *mattr,
const char *buf,
size_t len)
{
unsigned long value;
struct ir_input_dev *ir_dev = dev_get_drvdata(d);
struct decoder_data *data = get_decoder_data(ir_dev);
if (!data)
return -EINVAL;
if (strict_strtoul(buf, 10, &value) || value > 1)
return -EINVAL;
data->enabled = value;
return len;
}
static ssize_t show_enabled(struct device *d,
struct device_attribute *mattr, char *buf)
{
struct ir_input_dev *ir_dev = dev_get_drvdata(d);
struct decoder_data *data = get_decoder_data(ir_dev);
if (!data)
return -EINVAL;
if (data->enabled)
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static DEVICE_ATTR(enabled, S_IRUGO | S_IWUSR, show_enabled, store_enabled);
static struct attribute *decoder_attributes[] = {
&dev_attr_enabled.attr,
NULL
};
static struct attribute_group decoder_attribute_group = {
.name = "jvc_decoder",
.attrs = decoder_attributes,
};
/**
* ir_jvc_decode() - Decode one JVC pulse or space
* @input_dev: the struct input_dev descriptor of the device
* @duration: the struct ir_raw_event descriptor of the pulse/space
*
* This function returns -EINVAL if the pulse violates the state machine
*/
static int ir_jvc_decode(struct input_dev *input_dev, struct ir_raw_event ev)
{
struct decoder_data *data;
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
data = get_decoder_data(ir_dev);
if (!data)
return -EINVAL;
if (!data->enabled)
return 0;
if (IS_RESET(ev)) {
data->state = STATE_INACTIVE;
return 0;
}
if (!geq_margin(ev.duration, JVC_UNIT, JVC_UNIT / 2))
goto out;
IR_dprintk(2, "JVC decode started at state %d (%uus %s)\n",
data->state, TO_US(ev.duration), TO_STR(ev.pulse));
switch (data->state) {
case STATE_INACTIVE:
if (!ev.pulse)
break;
if (!eq_margin(ev.duration, JVC_HEADER_PULSE, JVC_UNIT / 2))
break;
data->count = 0;
data->first = true;
data->toggle = !data->toggle;
data->state = STATE_HEADER_SPACE;
return 0;
case STATE_HEADER_SPACE:
if (ev.pulse)
break;
if (!eq_margin(ev.duration, JVC_HEADER_SPACE, JVC_UNIT / 2))
break;
data->state = STATE_BIT_PULSE;
return 0;
case STATE_BIT_PULSE:
if (!ev.pulse)
break;
if (!eq_margin(ev.duration, JVC_BIT_PULSE, JVC_UNIT / 2))
break;
data->state = STATE_BIT_SPACE;
return 0;
case STATE_BIT_SPACE:
if (ev.pulse)
break;
data->jvc_bits <<= 1;
if (eq_margin(ev.duration, JVC_BIT_1_SPACE, JVC_UNIT / 2)) {
data->jvc_bits |= 1;
decrease_duration(&ev, JVC_BIT_1_SPACE);
} else if (eq_margin(ev.duration, JVC_BIT_0_SPACE, JVC_UNIT / 2))
decrease_duration(&ev, JVC_BIT_0_SPACE);
else
break;
data->count++;
if (data->count == JVC_NBITS)
data->state = STATE_TRAILER_PULSE;
else
data->state = STATE_BIT_PULSE;
return 0;
case STATE_TRAILER_PULSE:
if (!ev.pulse)
break;
if (!eq_margin(ev.duration, JVC_TRAILER_PULSE, JVC_UNIT / 2))
break;
data->state = STATE_TRAILER_SPACE;
return 0;
case STATE_TRAILER_SPACE:
if (ev.pulse)
break;
if (!geq_margin(ev.duration, JVC_TRAILER_SPACE, JVC_UNIT / 2))
break;
if (data->first) {
u32 scancode;
scancode = (bitrev8((data->jvc_bits >> 8) & 0xff) << 8) |
(bitrev8((data->jvc_bits >> 0) & 0xff) << 0);
IR_dprintk(1, "JVC scancode 0x%04x\n", scancode);
ir_keydown(input_dev, scancode, data->toggle);
data->first = false;
data->jvc_old_bits = data->jvc_bits;
} else if (data->jvc_bits == data->jvc_old_bits) {
IR_dprintk(1, "JVC repeat\n");
ir_repeat(input_dev);
} else {
IR_dprintk(1, "JVC invalid repeat msg\n");
break;
}
data->count = 0;
data->state = STATE_BIT_PULSE;
return 0;
}
out:
IR_dprintk(1, "JVC decode failed at state %d (%uus %s)\n",
data->state, TO_US(ev.duration), TO_STR(ev.pulse));
data->state = STATE_INACTIVE;
return -EINVAL;
}
static int ir_jvc_register(struct input_dev *input_dev)
{
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
struct decoder_data *data;
int rc;
rc = sysfs_create_group(&ir_dev->dev.kobj, &decoder_attribute_group);
if (rc < 0)
return rc;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) {
sysfs_remove_group(&ir_dev->dev.kobj, &decoder_attribute_group);
return -ENOMEM;
}
data->ir_dev = ir_dev;
data->enabled = 1;
spin_lock(&decoder_lock);
list_add_tail(&data->list, &decoder_list);
spin_unlock(&decoder_lock);
return 0;
}
static int ir_jvc_unregister(struct input_dev *input_dev)
{
struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
static struct decoder_data *data;
data = get_decoder_data(ir_dev);
if (!data)
return 0;
sysfs_remove_group(&ir_dev->dev.kobj, &decoder_attribute_group);
spin_lock(&decoder_lock);
list_del(&data->list);
spin_unlock(&decoder_lock);
return 0;
}
static struct ir_raw_handler jvc_handler = {
.decode = ir_jvc_decode,
.raw_register = ir_jvc_register,
.raw_unregister = ir_jvc_unregister,
};
static int __init ir_jvc_decode_init(void)
{
ir_raw_handler_register(&jvc_handler);
printk(KERN_INFO "IR JVC protocol handler initialized\n");
return 0;
}
static void __exit ir_jvc_decode_exit(void)
{
ir_raw_handler_unregister(&jvc_handler);
}
module_init(ir_jvc_decode_init);
module_exit(ir_jvc_decode_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Härdeman <david@hardeman.nu>");
MODULE_DESCRIPTION("JVC IR protocol decoder");
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/* ir-raw-event.c - handle IR Pulse/Space event
*
* Copyright (C) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/workqueue.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include "ir-core-priv.h"
/* Define the max number of pulse/space transitions to buffer */
#define MAX_IR_EVENT_SIZE 512
/* Used to handle IR raw handler extensions */
static LIST_HEAD(ir_raw_handler_list);
static DEFINE_SPINLOCK(ir_raw_handler_lock);
/**
* RUN_DECODER() - runs an operation on all IR decoders
* @ops: IR raw handler operation to be called
* @arg: arguments to be passed to the callback
*
* Calls ir_raw_handler::ops for all registered IR handlers. It prevents
* new decode addition/removal while running, by locking ir_raw_handler_lock
* mutex. If an error occurs, it stops the ops. Otherwise, it returns a sum
* of the return codes.
*/
#define RUN_DECODER(ops, ...) ({ \
struct ir_raw_handler *_ir_raw_handler; \
int _sumrc = 0, _rc; \
spin_lock(&ir_raw_handler_lock); \
list_for_each_entry(_ir_raw_handler, &ir_raw_handler_list, list) { \
if (_ir_raw_handler->ops) { \
_rc = _ir_raw_handler->ops(__VA_ARGS__); \
if (_rc < 0) \
break; \
_sumrc += _rc; \
} \
} \
spin_unlock(&ir_raw_handler_lock); \
_sumrc; \
})
#ifdef MODULE
/* Used to load the decoders */
static struct work_struct wq_load;
#endif
static void ir_raw_event_work(struct work_struct *work)
{
struct ir_raw_event ev;
struct ir_raw_event_ctrl *raw =
container_of(work, struct ir_raw_event_ctrl, rx_work);
while (kfifo_out(&raw->kfifo, &ev, sizeof(ev)) == sizeof(ev))
RUN_DECODER(decode, raw->input_dev, ev);
}
int ir_raw_event_register(struct input_dev *input_dev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
int rc;
ir->raw = kzalloc(sizeof(*ir->raw), GFP_KERNEL);
if (!ir->raw)
return -ENOMEM;
ir->raw->input_dev = input_dev;
INIT_WORK(&ir->raw->rx_work, ir_raw_event_work);
rc = kfifo_alloc(&ir->raw->kfifo, sizeof(s64) * MAX_IR_EVENT_SIZE,
GFP_KERNEL);
if (rc < 0) {
kfree(ir->raw);
ir->raw = NULL;
return rc;
}
rc = RUN_DECODER(raw_register, input_dev);
if (rc < 0) {
kfifo_free(&ir->raw->kfifo);
kfree(ir->raw);
ir->raw = NULL;
return rc;
}
return rc;
}
void ir_raw_event_unregister(struct input_dev *input_dev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
if (!ir->raw)
return;
cancel_work_sync(&ir->raw->rx_work);
RUN_DECODER(raw_unregister, input_dev);
kfifo_free(&ir->raw->kfifo);
kfree(ir->raw);
ir->raw = NULL;
}
/**
* ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders
* @input_dev: the struct input_dev device descriptor
* @ev: the struct ir_raw_event descriptor of the pulse/space
*
* This routine (which may be called from an interrupt context) stores a
* pulse/space duration for the raw ir decoding state machines. Pulses are
* signalled as positive values and spaces as negative values. A zero value
* will reset the decoding state machines.
*/
int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
if (!ir->raw)
return -EINVAL;
if (kfifo_in(&ir->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev))
return -ENOMEM;
return 0;
}
EXPORT_SYMBOL_GPL(ir_raw_event_store);
/**
* ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space
* @input_dev: the struct input_dev device descriptor
* @type: the type of the event that has occurred
*
* This routine (which may be called from an interrupt context) is used to
* store the beginning of an ir pulse or space (or the start/end of ir
* reception) for the raw ir decoding state machines. This is used by
* hardware which does not provide durations directly but only interrupts
* (or similar events) on state change.
*/
int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
ktime_t now;
s64 delta; /* ns */
struct ir_raw_event ev;
int rc = 0;
if (!ir->raw)
return -EINVAL;
now = ktime_get();
delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
/* Check for a long duration since last event or if we're
* being called for the first time, note that delta can't
* possibly be negative.
*/
ev.duration = 0;
if (delta > IR_MAX_DURATION || !ir->raw->last_type)
type |= IR_START_EVENT;
else
ev.duration = delta;
if (type & IR_START_EVENT)
ir_raw_event_reset(input_dev);
else if (ir->raw->last_type & IR_SPACE) {
ev.pulse = false;
rc = ir_raw_event_store(input_dev, &ev);
} else if (ir->raw->last_type & IR_PULSE) {
ev.pulse = true;
rc = ir_raw_event_store(input_dev, &ev);
} else
return 0;
ir->raw->last_event = now;
ir->raw->last_type = type;
return rc;
}
EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
/**
* ir_raw_event_handle() - schedules the decoding of stored ir data
* @input_dev: the struct input_dev device descriptor
*
* This routine will signal the workqueue to start decoding stored ir data.
*/
void ir_raw_event_handle(struct input_dev *input_dev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
if (!ir->raw)
return;
schedule_work(&ir->raw->rx_work);
}
EXPORT_SYMBOL_GPL(ir_raw_event_handle);
/*
* Extension interface - used to register the IR decoders
*/
int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler)
{
spin_lock(&ir_raw_handler_lock);
list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list);
spin_unlock(&ir_raw_handler_lock);
return 0;
}
EXPORT_SYMBOL(ir_raw_handler_register);
void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler)
{
spin_lock(&ir_raw_handler_lock);
list_del(&ir_raw_handler->list);
spin_unlock(&ir_raw_handler_lock);
}
EXPORT_SYMBOL(ir_raw_handler_unregister);
#ifdef MODULE
static void init_decoders(struct work_struct *work)
{
/* Load the decoder modules */
load_nec_decode();
load_rc5_decode();
load_rc6_decode();
load_jvc_decode();
load_sony_decode();
/* If needed, we may later add some init code. In this case,
it is needed to change the CONFIG_MODULE test at ir-core.h
*/
}
#endif
void ir_raw_init(void)
{
#ifdef MODULE
INIT_WORK(&wq_load, init_decoders);
schedule_work(&wq_load);
#endif
}
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config RC_MAP
tristate "Compile Remote Controller keymap modules"
depends on IR_CORE
default y
---help---
This option enables the compilation of lots of Remote
Controller tables. They are short tables, but if you
don't use a remote controller, or prefer to load the
tables on userspace, you should disable it.
The ir-keytable program, available at v4l-utils package
provide the tool and the same RC maps for load from
userspace. Its available at
http://git.linuxtv.org/v4l-utils
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/* empty.h - Keytable for empty Remote Controller
*
* keymap imported from ir-keymaps.c
*
* Copyright (c) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <media/rc-map.h>
/* empty keytable, can be used as placeholder for not-yet created keytables */
static struct ir_scancode empty[] = {
{ 0x2a, KEY_COFFEE },
};
static struct rc_keymap empty_map = {
.map = {
.scan = empty,
.size = ARRAY_SIZE(empty),
.ir_type = IR_TYPE_UNKNOWN, /* Legacy IR type */
.name = RC_MAP_EMPTY,
}
};
static int __init init_rc_map_empty(void)
{
return ir_register_map(&empty_map);
}
static void __exit exit_rc_map_empty(void)
{
ir_unregister_map(&empty_map);
}
module_init(init_rc_map_empty)
module_exit(exit_rc_map_empty)
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
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