mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 04:34:11 +08:00
82559ac027
All those files are under GFDL 1.1 or later, with no invariant sections. Tag them as such. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
152 lines
4.6 KiB
ReStructuredText
152 lines
4.6 KiB
ReStructuredText
.. Permission is granted to copy, distribute and/or modify this
|
|
.. document under the terms of the GNU Free Documentation License,
|
|
.. Version 1.1 or any later version published by the Free Software
|
|
.. Foundation, with no Invariant Sections, no Front-Cover Texts
|
|
.. and no Back-Cover Texts. A copy of the license is included at
|
|
.. Documentation/media/uapi/fdl-appendix.rst.
|
|
..
|
|
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
|
|
|
|
.. _remote_controllers_sysfs_nodes:
|
|
|
|
*******************************
|
|
Remote Controller's sysfs nodes
|
|
*******************************
|
|
|
|
As defined at ``Documentation/ABI/testing/sysfs-class-rc``, those are
|
|
the sysfs nodes that control the Remote Controllers:
|
|
|
|
|
|
.. _sys_class_rc:
|
|
|
|
/sys/class/rc/
|
|
==============
|
|
|
|
The ``/sys/class/rc/`` class sub-directory belongs to the Remote
|
|
Controller core and provides a sysfs interface for configuring infrared
|
|
remote controller receivers.
|
|
|
|
|
|
.. _sys_class_rc_rcN:
|
|
|
|
/sys/class/rc/rcN/
|
|
==================
|
|
|
|
A ``/sys/class/rc/rcN`` directory is created for each remote control
|
|
receiver device where N is the number of the receiver.
|
|
|
|
|
|
.. _sys_class_rc_rcN_protocols:
|
|
|
|
/sys/class/rc/rcN/protocols
|
|
===========================
|
|
|
|
Reading this file returns a list of available protocols, something like::
|
|
|
|
rc5 [rc6] nec jvc [sony]
|
|
|
|
Enabled protocols are shown in [] brackets.
|
|
|
|
Writing "+proto" will add a protocol to the list of enabled protocols.
|
|
|
|
Writing "-proto" will remove a protocol from the list of enabled
|
|
protocols.
|
|
|
|
Writing "proto" will enable only "proto".
|
|
|
|
Writing "none" will disable all protocols.
|
|
|
|
Write fails with ``EINVAL`` if an invalid protocol combination or unknown
|
|
protocol name is used.
|
|
|
|
|
|
.. _sys_class_rc_rcN_filter:
|
|
|
|
/sys/class/rc/rcN/filter
|
|
========================
|
|
|
|
Sets the scancode filter expected value.
|
|
|
|
Use in combination with ``/sys/class/rc/rcN/filter_mask`` to set the
|
|
expected value of the bits set in the filter mask. If the hardware
|
|
supports it then scancodes which do not match the filter will be
|
|
ignored. Otherwise the write will fail with an error.
|
|
|
|
This value may be reset to 0 if the current protocol is altered.
|
|
|
|
|
|
.. _sys_class_rc_rcN_filter_mask:
|
|
|
|
/sys/class/rc/rcN/filter_mask
|
|
=============================
|
|
|
|
Sets the scancode filter mask of bits to compare. Use in combination
|
|
with ``/sys/class/rc/rcN/filter`` to set the bits of the scancode which
|
|
should be compared against the expected value. A value of 0 disables the
|
|
filter to allow all valid scancodes to be processed.
|
|
|
|
If the hardware supports it then scancodes which do not match the filter
|
|
will be ignored. Otherwise the write will fail with an error.
|
|
|
|
This value may be reset to 0 if the current protocol is altered.
|
|
|
|
|
|
.. _sys_class_rc_rcN_wakeup_protocols:
|
|
|
|
/sys/class/rc/rcN/wakeup_protocols
|
|
==================================
|
|
|
|
Reading this file returns a list of available protocols to use for the
|
|
wakeup filter, something like::
|
|
|
|
rc-5 nec nec-x rc-6-0 rc-6-6a-24 [rc-6-6a-32] rc-6-mce
|
|
|
|
Note that protocol variants are listed, so ``nec``, ``sony``, ``rc-5``, ``rc-6``
|
|
have their different bit length encodings listed if available.
|
|
|
|
Note that all protocol variants are listed.
|
|
|
|
The enabled wakeup protocol is shown in [] brackets.
|
|
|
|
Only one protocol can be selected at a time.
|
|
|
|
Writing "proto" will use "proto" for wakeup events.
|
|
|
|
Writing "none" will disable wakeup.
|
|
|
|
Write fails with ``EINVAL`` if an invalid protocol combination or unknown
|
|
protocol name is used, or if wakeup is not supported by the hardware.
|
|
|
|
|
|
.. _sys_class_rc_rcN_wakeup_filter:
|
|
|
|
/sys/class/rc/rcN/wakeup_filter
|
|
===============================
|
|
|
|
Sets the scancode wakeup filter expected value. Use in combination with
|
|
``/sys/class/rc/rcN/wakeup_filter_mask`` to set the expected value of
|
|
the bits set in the wakeup filter mask to trigger a system wake event.
|
|
|
|
If the hardware supports it and wakeup_filter_mask is not 0 then
|
|
scancodes which match the filter will wake the system from e.g. suspend
|
|
to RAM or power off. Otherwise the write will fail with an error.
|
|
|
|
This value may be reset to 0 if the wakeup protocol is altered.
|
|
|
|
|
|
.. _sys_class_rc_rcN_wakeup_filter_mask:
|
|
|
|
/sys/class/rc/rcN/wakeup_filter_mask
|
|
====================================
|
|
|
|
Sets the scancode wakeup filter mask of bits to compare. Use in
|
|
combination with ``/sys/class/rc/rcN/wakeup_filter`` to set the bits of
|
|
the scancode which should be compared against the expected value to
|
|
trigger a system wake event.
|
|
|
|
If the hardware supports it and wakeup_filter_mask is not 0 then
|
|
scancodes which match the filter will wake the system from e.g. suspend
|
|
to RAM or power off. Otherwise the write will fail with an error.
|
|
|
|
This value may be reset to 0 if the wakeup protocol is altered.
|