<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/Documentation/video4linux/v4l2-framework.txt, branch v2.6.33.1</title>
<subtitle>Linux kernel for Apalis and Colibri modules</subtitle>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/'/>
<entry>
<title>V4L/DVB (13549): v4l: Add video_device_node_name function</title>
<updated>2009-12-16T02:17:54+00:00</updated>
<author>
<name>Laurent Pinchart</name>
<email>laurent.pinchart@ideasonboard.com</email>
</author>
<published>2009-11-27T16:56:50+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=eac8ea536aded07004bde917f05a2329902c64b0'/>
<id>eac8ea536aded07004bde917f05a2329902c64b0</id>
<content type='text'>
Many drivers access the device number (video_device::v4l2_devnode::num)
in order to print the video device node name. Add and use a helper
function to retrieve the video_device node name.

Signed-off-by: Laurent Pinchart &lt;laurent.pinchart@ideasonboard.com&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Many drivers access the device number (video_device::v4l2_devnode::num)
in order to print the video device node name. Add and use a helper
function to retrieve the video_device node name.

Signed-off-by: Laurent Pinchart &lt;laurent.pinchart@ideasonboard.com&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (12725): v4l: warn when desired devnodenr is in use &amp; add _no_warn function</title>
<updated>2009-09-19T03:19:34+00:00</updated>
<author>
<name>Hans Verkuil</name>
<email>hverkuil@xs4all.nl</email>
</author>
<published>2009-09-06T10:54:00+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=6b5270d21202fcf6ae16a6266fed83a30ccece7a'/>
<id>6b5270d21202fcf6ae16a6266fed83a30ccece7a</id>
<content type='text'>
Warn when the desired device node number is already in use, except when
the new video_register_device_no_warn function is called since in some
use-cases that warning is not relevant.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Warn when the desired device node number is already in use, except when
the new video_register_device_no_warn function is called since in some
use-cases that warning is not relevant.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (12722): v4l2-dev: replace 'kernel number' by 'device node number'.</title>
<updated>2009-09-19T03:19:27+00:00</updated>
<author>
<name>Hans Verkuil</name>
<email>hverkuil@xs4all.nl</email>
</author>
<published>2009-09-06T10:13:14+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=22e221258b56cc1a4dc5a9fb2c26f4d6ed9dde81'/>
<id>22e221258b56cc1a4dc5a9fb2c26f4d6ed9dde81</id>
<content type='text'>
The term 'kernel number' is very vague, so replace it with the somewhat more
descriptive term 'device node number'.

In one place the local variable 'nr' was used to create the device node number
of the new device name. This has been replaced with the vdev-&gt;num field to
more clearly mark this as being the device node number and not the minor
number.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The term 'kernel number' is very vague, so replace it with the somewhat more
descriptive term 'device node number'.

In one place the local variable 'nr' was used to create the device node number
of the new device name. This has been replaced with the vdev-&gt;num field to
more clearly mark this as being the device node number and not the minor
number.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (12541): v4l: remove video_register_device_index</title>
<updated>2009-09-19T03:19:26+00:00</updated>
<author>
<name>Hans Verkuil</name>
<email>hverkuil@xs4all.nl</email>
</author>
<published>2009-06-19T14:32:56+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=7ae0cd9bc793e16d8d68df3c17c601732cc1d3c7'/>
<id>7ae0cd9bc793e16d8d68df3c17c601732cc1d3c7</id>
<content type='text'>
video_register_device_index is never actually called, instead the
stream index number is always calculated automatically.

This patch removes this function and simplifies the internal get_index
function since that can now always just return the first free index.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
video_register_device_index is never actually called, instead the
stream index number is always calculated automatically.

This patch removes this function and simplifies the internal get_index
function since that can now always just return the first free index.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (12540): v4l: simplify v4l2_i2c_new_subdev and friends</title>
<updated>2009-09-19T03:19:24+00:00</updated>
<author>
<name>Hans Verkuil</name>
<email>hverkuil@xs4all.nl</email>
</author>
<published>2009-08-10T05:49:08+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=53dacb15705901e14b03dcba27e40364fedd9d09'/>
<id>53dacb15705901e14b03dcba27e40364fedd9d09</id>
<content type='text'>
Rewrite v4l2_i2c_new_subdev as a simplified version of v4l2_i2c_new_subdev_cfg
and remove v4l2_i2c_new_probed_subdev and v4l2_i2c_new_probed_subdev_addr.

This simplifies this API substantially.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Rewrite v4l2_i2c_new_subdev as a simplified version of v4l2_i2c_new_subdev_cfg
and remove v4l2_i2c_new_probed_subdev and v4l2_i2c_new_probed_subdev_addr.

This simplifies this API substantially.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (12128): v4l2: update framework documentation.</title>
<updated>2009-06-23T06:15:52+00:00</updated>
<author>
<name>Hans Verkuil</name>
<email>hverkuil@xs4all.nl</email>
</author>
<published>2009-06-09T20:29:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=2c0b19ac3b73199fe7b3fbff884051046554c048'/>
<id>2c0b19ac3b73199fe7b3fbff884051046554c048</id>
<content type='text'>
Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (11671): v4l2: add v4l2_device_set_name()</title>
<updated>2009-06-16T21:20:50+00:00</updated>
<author>
<name>Hans Verkuil</name>
<email>hverkuil@xs4all.nl</email>
</author>
<published>2009-05-02T13:12:50+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=102e78136446faca7d7d241b628c5bd0e0d61d5d'/>
<id>102e78136446faca7d7d241b628c5bd0e0d61d5d</id>
<content type='text'>
Add a utility function that can be used to setup the v4l2_device's name
field in a standard manner.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add a utility function that can be used to setup the v4l2_device's name
field in a standard manner.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (11373): v4l2-common: add explicit v4l2_device pointer as first arg to new_(probed)_subdev</title>
<updated>2009-04-07T00:44:24+00:00</updated>
<author>
<name>Hans Verkuil</name>
<email>hverkuil@xs4all.nl</email>
</author>
<published>2009-04-01T06:57:53+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=e6574f2fbecdb8af807169d345c10131ae060a88'/>
<id>e6574f2fbecdb8af807169d345c10131ae060a88</id>
<content type='text'>
The functions v4l2_i2c_new_subdev and v4l2_i2c_new_probed_subdev relied on
i2c_get_adapdata to return the v4l2_device. However, this is not always
possible on embedded platforms. So modify the API to pass the v4l2_device
pointer explicitly.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The functions v4l2_i2c_new_subdev and v4l2_i2c_new_probed_subdev relied on
i2c_get_adapdata to return the v4l2_device. However, this is not always
possible on embedded platforms. So modify the API to pass the v4l2_device
pointer explicitly.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (11367): v4l2-common: remove legacy code</title>
<updated>2009-04-07T00:44:20+00:00</updated>
<author>
<name>Hans Verkuil</name>
<email>hverkuil@xs4all.nl</email>
</author>
<published>2009-04-01T06:41:09+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=78a3b4db2e53a1903c86e2856e175d85a3849e84'/>
<id>78a3b4db2e53a1903c86e2856e175d85a3849e84</id>
<content type='text'>
Now that all drivers are converted to v4l2_subdev we can remove legacy code
in v4l2-common. Also move the documentation of the internal API to
v4l2-subdev.h where it really belongs.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Now that all drivers are converted to v4l2_subdev we can remove legacy code
in v4l2-common. Also move the documentation of the internal API to
v4l2-subdev.h where it really belongs.

Signed-off-by: Hans Verkuil &lt;hverkuil@xs4all.nl&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>V4L/DVB (11351): v4l: use usb_interface for v4l2_device_register</title>
<updated>2009-04-07T00:43:59+00:00</updated>
<author>
<name>Janne Grunau</name>
<email>j@jannau.net</email>
</author>
<published>2009-04-01T11:30:06+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=073d696d547ef933e1f0748086da785e95cb8395'/>
<id>073d696d547ef933e1f0748086da785e95cb8395</id>
<content type='text'>
If usb_interface.dev is used as dev parameter for v4l2_device_register
v4l2_dev.name contains the v4l driver/module name and usb device and
interface instead of a simple "usb x-y".
It also matches the recommendation to set the parent devices for usb
drivers.

Signed-off-by: Janne Grunau &lt;j@jannau.net&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
If usb_interface.dev is used as dev parameter for v4l2_device_register
v4l2_dev.name contains the v4l driver/module name and usb device and
interface instead of a simple "usb x-y".
It also matches the recommendation to set the parent devices for usb
drivers.

Signed-off-by: Janne Grunau &lt;j@jannau.net&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab@redhat.com&gt;
</pre>
</div>
</content>
</entry>
</feed>
