What: /sys/class/rc/
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Date: Apr 2010
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KernelVersion: 2.6.35
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Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Description:
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The rc/ class sub-directory belongs to the Remote Controller
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core and provides a sysfs interface for configuring infrared
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remote controller receivers.
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What: /sys/class/rc/rcN/
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Date: Apr 2010
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KernelVersion: 2.6.35
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Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Description:
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A /sys/class/rc/rcN directory is created for each remote
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control receiver device where N is the number of the receiver.
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What: /sys/class/rc/rcN/protocols
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Date: Jun 2010
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KernelVersion: 2.6.36
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Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Description:
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Reading this file returns a list of available protocols,
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something like::
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"rc5 [rc6] nec jvc [sony]"
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Enabled protocols are shown in [] brackets.
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Writing "+proto" will add a protocol to the list of enabled
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protocols.
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Writing "-proto" will remove a protocol from the list of enabled
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protocols.
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Writing "proto" will enable only "proto".
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Writing "none" will disable all protocols.
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Write fails with EINVAL if an invalid protocol combination or
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unknown protocol name is used.
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What: /sys/class/rc/rcN/filter
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Date: Jan 2014
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KernelVersion: 3.15
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Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Description:
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Sets the scancode filter expected value.
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Use in combination with /sys/class/rc/rcN/filter_mask to set the
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expected value of the bits set in the filter mask.
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If the hardware supports it then scancodes which do not match
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the filter will be ignored. Otherwise the write will fail with
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an error.
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This value may be reset to 0 if the current protocol is altered.
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What: /sys/class/rc/rcN/filter_mask
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Date: Jan 2014
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KernelVersion: 3.15
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Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Description:
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Sets the scancode filter mask of bits to compare.
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Use in combination with /sys/class/rc/rcN/filter to set the bits
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of the scancode which should be compared against the expected
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value. A value of 0 disables the filter to allow all valid
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scancodes to be processed.
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If the hardware supports it then scancodes which do not match
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the filter will be ignored. Otherwise the write will fail with
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an error.
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This value may be reset to 0 if the current protocol is altered.
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What: /sys/class/rc/rcN/wakeup_protocols
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Date: Feb 2017
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KernelVersion: 4.11
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Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Description:
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Reading this file returns a list of available protocols to use
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for the wakeup filter, something like::
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"rc-5 nec nec-x rc-6-0 rc-6-6a-24 [rc-6-6a-32] rc-6-mce"
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Note that protocol variants are listed, so "nec", "sony",
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"rc-5", "rc-6" have their different bit length encodings
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listed if available.
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The enabled wakeup protocol is shown in [] brackets.
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Only one protocol can be selected at a time.
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Writing "proto" will use "proto" for wakeup events.
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Writing "none" will disable wakeup.
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Write fails with EINVAL if an invalid protocol combination or
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unknown protocol name is used, or if wakeup is not supported by
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the hardware.
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What: /sys/class/rc/rcN/wakeup_filter
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Date: Jan 2014
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KernelVersion: 3.15
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Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Description:
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Sets the scancode wakeup filter expected value.
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Use in combination with /sys/class/rc/rcN/wakeup_filter_mask to
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set the expected value of the bits set in the wakeup filter mask
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to trigger a system wake event.
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If the hardware supports it and wakeup_filter_mask is not 0 then
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scancodes which match the filter will wake the system from e.g.
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suspend to RAM or power off.
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Otherwise the write will fail with an error.
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This value may be reset to 0 if the wakeup protocol is altered.
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What: /sys/class/rc/rcN/wakeup_filter_mask
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Date: Jan 2014
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KernelVersion: 3.15
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Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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Description:
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Sets the scancode wakeup filter mask of bits to compare.
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Use in combination with /sys/class/rc/rcN/wakeup_filter to set
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the bits of the scancode which should be compared against the
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expected value to trigger a system wake event.
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If the hardware supports it and wakeup_filter_mask is not 0 then
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scancodes which match the filter will wake the system from e.g.
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suspend to RAM or power off.
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Otherwise the write will fail with an error.
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This value may be reset to 0 if the wakeup protocol is altered.
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