4 Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
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.
10 What: /sys/class/rc/rcN/
13 Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
15 A /sys/class/rc/rcN directory is created for each remote
16 control receiver device where N is the number of the receiver.
18 What: /sys/class/rc/rcN/protocols
21 Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
23 Reading this file returns a list of available protocols,
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
29 Writing "-proto" will remove a protocol from the list of enabled
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.
36 What: /sys/class/rc/rcN/filter
39 Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
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
47 This value may be reset to 0 if the current protocol is altered.
49 What: /sys/class/rc/rcN/filter_mask
52 Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
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
62 This value may be reset to 0 if the current protocol is altered.
64 What: /sys/class/rc/rcN/wakeup_protocols
67 Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
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
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
83 What: /sys/class/rc/rcN/wakeup_filter
86 Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
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.
98 What: /sys/class/rc/rcN/wakeup_filter_mask
101 Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
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.