1 What: /sys/class/rc/ 1 What: /sys/class/rc/
2 Date: Apr 2010 2 Date: Apr 2010
3 KernelVersion: 2.6.35 3 KernelVersion: 2.6.35
4 Contact: Mauro Carvalho Chehab <mchehab+ 4 Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
5 Description: 5 Description:
6 The rc/ class sub-directory be 6 The rc/ class sub-directory belongs to the Remote Controller
7 core and provides a sysfs inte 7 core and provides a sysfs interface for configuring infrared
8 remote controller receivers. 8 remote controller receivers.
9 9
10 What: /sys/class/rc/rc<N>/ 10 What: /sys/class/rc/rc<N>/
11 Date: Apr 2010 11 Date: Apr 2010
12 KernelVersion: 2.6.35 12 KernelVersion: 2.6.35
13 Contact: Mauro Carvalho Chehab <mchehab+ 13 Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
14 Description: 14 Description:
15 A /sys/class/rc/rcN directory 15 A /sys/class/rc/rcN directory is created for each remote
16 control receiver device where 16 control receiver device where N is the number of the receiver.
17 17
18 What: /sys/class/rc/rc<N>/protocols 18 What: /sys/class/rc/rc<N>/protocols
19 Date: Jun 2010 19 Date: Jun 2010
20 KernelVersion: 2.6.36 20 KernelVersion: 2.6.36
21 Contact: Mauro Carvalho Chehab <mchehab+ 21 Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
22 Description: 22 Description:
23 Reading this file returns a li 23 Reading this file returns a list of available protocols,
24 something like:: 24 something like::
25 25
26 "rc5 [rc6] nec jvc [sony]" 26 "rc5 [rc6] nec jvc [sony]"
27 27
28 Enabled protocols are shown in 28 Enabled protocols are shown in [] brackets.
29 29
30 Writing "+proto" will add a pr 30 Writing "+proto" will add a protocol to the list of enabled
31 protocols. 31 protocols.
32 32
33 Writing "-proto" will remove a 33 Writing "-proto" will remove a protocol from the list of enabled
34 protocols. 34 protocols.
35 35
36 Writing "proto" will enable on 36 Writing "proto" will enable only "proto".
37 37
38 Writing "none" will disable al 38 Writing "none" will disable all protocols.
39 39
40 Write fails with EINVAL if an 40 Write fails with EINVAL if an invalid protocol combination or
41 unknown protocol name is used. 41 unknown protocol name is used.
42 42
43 What: /sys/class/rc/rc<N>/filter 43 What: /sys/class/rc/rc<N>/filter
44 Date: Jan 2014 44 Date: Jan 2014
45 KernelVersion: 3.15 45 KernelVersion: 3.15
46 Contact: Mauro Carvalho Chehab <mchehab+ 46 Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
47 Description: 47 Description:
48 Sets the scancode filter expec 48 Sets the scancode filter expected value.
49 49
50 Use in combination with /sys/c 50 Use in combination with /sys/class/rc/rcN/filter_mask to set the
51 expected value of the bits set 51 expected value of the bits set in the filter mask.
52 If the hardware supports it th 52 If the hardware supports it then scancodes which do not match
53 the filter will be ignored. Ot 53 the filter will be ignored. Otherwise the write will fail with
54 an error. 54 an error.
55 55
56 This value may be reset to 0 i 56 This value may be reset to 0 if the current protocol is altered.
57 57
58 What: /sys/class/rc/rc<N>/filter_mas 58 What: /sys/class/rc/rc<N>/filter_mask
59 Date: Jan 2014 59 Date: Jan 2014
60 KernelVersion: 3.15 60 KernelVersion: 3.15
61 Contact: Mauro Carvalho Chehab <mchehab+ 61 Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
62 Description: 62 Description:
63 Sets the scancode filter mask 63 Sets the scancode filter mask of bits to compare.
64 Use in combination with /sys/c 64 Use in combination with /sys/class/rc/rcN/filter to set the bits
65 of the scancode which should b 65 of the scancode which should be compared against the expected
66 value. A value of 0 disables t 66 value. A value of 0 disables the filter to allow all valid
67 scancodes to be processed. 67 scancodes to be processed.
68 68
69 If the hardware supports it th 69 If the hardware supports it then scancodes which do not match
70 the filter will be ignored. Ot 70 the filter will be ignored. Otherwise the write will fail with
71 an error. 71 an error.
72 72
73 This value may be reset to 0 i 73 This value may be reset to 0 if the current protocol is altered.
74 74
75 What: /sys/class/rc/rc<N>/wakeup_pro 75 What: /sys/class/rc/rc<N>/wakeup_protocols
76 Date: Feb 2017 76 Date: Feb 2017
77 KernelVersion: 4.11 77 KernelVersion: 4.11
78 Contact: Mauro Carvalho Chehab <mchehab+ 78 Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
79 Description: 79 Description:
80 Reading this file returns a li 80 Reading this file returns a list of available protocols to use
81 for the wakeup filter, somethi 81 for the wakeup filter, something like::
82 82
83 "rc-5 nec nec-x rc-6-0 rc- 83 "rc-5 nec nec-x rc-6-0 rc-6-6a-24 [rc-6-6a-32] rc-6-mce"
84 84
85 Note that protocol variants ar 85 Note that protocol variants are listed, so "nec", "sony",
86 "rc-5", "rc-6" have their diff 86 "rc-5", "rc-6" have their different bit length encodings
87 listed if available. 87 listed if available.
88 88
89 The enabled wakeup protocol is 89 The enabled wakeup protocol is shown in [] brackets.
90 90
91 Only one protocol can be selec 91 Only one protocol can be selected at a time.
92 92
93 Writing "proto" will use "prot 93 Writing "proto" will use "proto" for wakeup events.
94 94
95 Writing "none" will disable wa 95 Writing "none" will disable wakeup.
96 96
97 Write fails with EINVAL if an 97 Write fails with EINVAL if an invalid protocol combination or
98 unknown protocol name is used, 98 unknown protocol name is used, or if wakeup is not supported by
99 the hardware. 99 the hardware.
100 100
101 What: /sys/class/rc/rc<N>/wakeup_fil 101 What: /sys/class/rc/rc<N>/wakeup_filter
102 Date: Jan 2014 102 Date: Jan 2014
103 KernelVersion: 3.15 103 KernelVersion: 3.15
104 Contact: Mauro Carvalho Chehab <mchehab+ 104 Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
105 Description: 105 Description:
106 Sets the scancode wakeup filte 106 Sets the scancode wakeup filter expected value.
107 107
108 Use in combination with /sys/c 108 Use in combination with /sys/class/rc/rcN/wakeup_filter_mask to
109 set the expected value of the 109 set the expected value of the bits set in the wakeup filter mask
110 to trigger a system wake event 110 to trigger a system wake event.
111 111
112 If the hardware supports it an 112 If the hardware supports it and wakeup_filter_mask is not 0 then
113 scancodes which match the filt 113 scancodes which match the filter will wake the system from e.g.
114 suspend to RAM or power off. 114 suspend to RAM or power off.
115 115
116 Otherwise the write will fail 116 Otherwise the write will fail with an error.
117 117
118 This value may be reset to 0 i 118 This value may be reset to 0 if the wakeup protocol is altered.
119 119
120 What: /sys/class/rc/rc<N>/wakeup_fil 120 What: /sys/class/rc/rc<N>/wakeup_filter_mask
121 Date: Jan 2014 121 Date: Jan 2014
122 KernelVersion: 3.15 122 KernelVersion: 3.15
123 Contact: Mauro Carvalho Chehab <mchehab+ 123 Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
124 Description: 124 Description:
125 Sets the scancode wakeup filte 125 Sets the scancode wakeup filter mask of bits to compare.
126 126
127 Use in combination with /sys/c 127 Use in combination with /sys/class/rc/rcN/wakeup_filter to set
128 the bits of the scancode which 128 the bits of the scancode which should be compared against the
129 expected value to trigger a sy 129 expected value to trigger a system wake event.
130 130
131 If the hardware supports it an 131 If the hardware supports it and wakeup_filter_mask is not 0 then
132 scancodes which match the filt 132 scancodes which match the filter will wake the system from e.g.
133 suspend to RAM or power off. 133 suspend to RAM or power off.
134 134
135 Otherwise the write will fail 135 Otherwise the write will fail with an error.
136 136
137 This value may be reset to 0 i 137 This value may be reset to 0 if the wakeup protocol is altered.
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