1What:		/sys/class/rc/
2Date:		Apr 2010
3KernelVersion:	2.6.35
4Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
5Description:
6		The rc/ class sub-directory belongs to the Remote Controller
7		core and provides a sysfs interface for configuring infrared
8		remote controller receivers.
9
10What:		/sys/class/rc/rcN/
11Date:		Apr 2010
12KernelVersion:	2.6.35
13Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
14Description:
15		A /sys/class/rc/rcN directory is created for each remote
16		control receiver device where N is the number of the receiver.
17
18What:		/sys/class/rc/rcN/protocols
19Date:		Jun 2010
20KernelVersion:	2.6.36
21Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
22Description:
23		Reading this file returns a list of available protocols,
24		something like:
25		    "rc5 [rc6] nec jvc [sony]"
26		Enabled protocols are shown in [] brackets.
27		Writing "+proto" will add a protocol to the list of enabled
28		protocols.
29		Writing "-proto" will remove a protocol from the list of enabled
30		protocols.
31		Writing "proto" will enable only "proto".
32		Writing "none" will disable all protocols.
33		Write fails with EINVAL if an invalid protocol combination or
34		unknown protocol name is used.
35
36What:		/sys/class/rc/rcN/filter
37Date:		Jan 2014
38KernelVersion:	3.15
39Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
40Description:
41		Sets the scancode filter expected value.
42		Use in combination with /sys/class/rc/rcN/filter_mask to set the
43		expected value of the bits set in the filter mask.
44		If the hardware supports it then scancodes which do not match
45		the filter will be ignored. Otherwise the write will fail with
46		an error.
47		This value may be reset to 0 if the current protocol is altered.
48
49What:		/sys/class/rc/rcN/filter_mask
50Date:		Jan 2014
51KernelVersion:	3.15
52Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
53Description:
54		Sets the scancode filter mask of bits to compare.
55		Use in combination with /sys/class/rc/rcN/filter to set the bits
56		of the scancode which should be compared against the expected
57		value. A value of 0 disables the filter to allow all valid
58		scancodes to be processed.
59		If the hardware supports it then scancodes which do not match
60		the filter will be ignored. Otherwise the write will fail with
61		an error.
62		This value may be reset to 0 if the current protocol is altered.
63
64What:		/sys/class/rc/rcN/wakeup_protocols
65Date:		Feb 2017
66KernelVersion:	4.11
67Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
68Description:
69		Reading this file returns a list of available protocols to use
70		for the wakeup filter, something like:
71		    "rc-5 nec nec-x rc-6-0 rc-6-6a-24 [rc-6-6a-32] rc-6-mce"
72		Note that protocol variants are listed, so "nec", "sony",
73		"rc-5", "rc-6" have their different bit length encodings
74		listed if available.
75		The enabled wakeup protocol is shown in [] brackets.
76		Only one protocol can be selected at a time.
77		Writing "proto" will use "proto" for wakeup events.
78		Writing "none" will disable wakeup.
79		Write fails with EINVAL if an invalid protocol combination or
80		unknown protocol name is used, or if wakeup is not supported by
81		the hardware.
82
83What:		/sys/class/rc/rcN/wakeup_filter
84Date:		Jan 2014
85KernelVersion:	3.15
86Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
87Description:
88		Sets the scancode wakeup filter expected value.
89		Use in combination with /sys/class/rc/rcN/wakeup_filter_mask to
90		set the expected value of the bits set in the wakeup filter mask
91		to trigger a system wake event.
92		If the hardware supports it and wakeup_filter_mask is not 0 then
93		scancodes which match the filter will wake the system from e.g.
94		suspend to RAM or power off.
95		Otherwise the write will fail with an error.
96		This value may be reset to 0 if the wakeup protocol is altered.
97
98What:		/sys/class/rc/rcN/wakeup_filter_mask
99Date:		Jan 2014
100KernelVersion:	3.15
101Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
102Description:
103		Sets the scancode wakeup filter mask of bits to compare.
104		Use in combination with /sys/class/rc/rcN/wakeup_filter to set
105		the bits of the scancode which should be compared against the
106		expected value to trigger a system wake event.
107		If the hardware supports it and wakeup_filter_mask is not 0 then
108		scancodes which match the filter will wake the system from e.g.
109		suspend to RAM or power off.
110		Otherwise the write will fail with an error.
111		This value may be reset to 0 if the wakeup protocol is altered.
112