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linux/Documentation/media/v4l-drivers/v4l-with-ir.rst

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[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
Infrared remote control support in video4linux drivers
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
======================================================
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
Authors: Gerd Hoffmann, Mauro Carvalho Chehab
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] doc-rst: add documentation about IR on V4L boards This section is outdated, but let's add it, after converting to ReST, and then fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:11:47 +00:00
Basics
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
------
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
Most analog and digital TV boards support remote controllers. Several of
them have a microprocessor that receives the IR carriers, convert into
pulse/space sequences and then to scan codes, returning such codes to
userspace ("scancode mode"). Other boards return just the pulse/space
sequences ("raw mode").
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
The support for remote controller in scancode mode is provided by the
standard Linux input layer. The support for raw mode is provided via LIRC.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
In order to check the support and test it, it is suggested to download
the `v4l-utils <https://git.linuxtv.org/v4l-utils.git/>`_. It provides
two tools to handle remote controllers:
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
- ir-keytable: provides a way to query the remote controller, list the
protocols it supports, enable in-kernel support for IR decoder or
switch the protocol and to test the reception of scan codes;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
- ir-ctl: provide tools to handle remote controllers that support raw mode
via LIRC interface.
Usually, the remote controller module is auto-loaded when the TV card is
detected. However, for a few devices, you need to manually load the
ir-kbd-i2c module.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] doc-rst: add documentation about IR on V4L boards This section is outdated, but let's add it, after converting to ReST, and then fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:11:47 +00:00
How it works
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
------------
The modules register the remote as keyboard within the linux input
layer, i.e. you'll see the keys of the remote as normal key strokes
(if CONFIG_INPUT_KEYBOARD is enabled).
Using the event devices (CONFIG_INPUT_EVDEV) it is possible for
applications to access the remote via /dev/input/event<n> devices.
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
The udev/systemd will automatically create the devices. If you install
the `v4l-utils <https://git.linuxtv.org/v4l-utils.git/>`_, it may also
automatically load a different keytable than the default one. Please see
`v4l-utils <https://git.linuxtv.org/v4l-utils.git/>`_ ir-keytable.1
man page for details.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
The ir-keytable tool is nice for trouble shooting, i.e. to check
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
whenever the input device is really present, which of the devices it
is, check whenever pressing keys on the remote actually generates
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
events and the like. You can also use any other input utility that changes
the keymaps, like the input kbd utility.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] doc-rst: add documentation about IR on V4L boards This section is outdated, but let's add it, after converting to ReST, and then fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:11:47 +00:00
Using with lircd
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
================
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
The latest versions of the lircd daemon supports reading events from the
linux input layer (via event device). It also supports receiving IR codes
in lirc mode.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] doc-rst: add documentation about IR on V4L boards This section is outdated, but let's add it, after converting to ReST, and then fix it. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:11:47 +00:00
Using without lircd
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
===================
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
Xorg recognizes several IR keycodes that have its numerical value lower
than 247. With the advent of Wayland, the input driver got updated too,
and should now accept all keycodes. Yet, you may want to just reasign
the keycodes to something that your favorite media application likes.
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 22:20:36 +00:00
[media] v4l-with-ir.rst: update it to reflect the current status This document were really old. Update it to reflect the current status of the IR drivers for TV. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2016-07-18 01:34:51 +00:00
This can be done by setting
`v4l-utils <https://git.linuxtv.org/v4l-utils.git/>`_ to load your own
keytable in runtime. Please read ir-keytable.1 man page for details.
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