sysfs-class-rc (4493B)
1What: /sys/class/rc/ 2Date: Apr 2010 3KernelVersion: 2.6.35 4Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 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/rc<N>/ 11Date: Apr 2010 12KernelVersion: 2.6.35 13Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 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/rc<N>/protocols 19Date: Jun 2010 20KernelVersion: 2.6.36 21Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 22Description: 23 Reading this file returns a list of available protocols, 24 something like:: 25 26 "rc5 [rc6] nec jvc [sony]" 27 28 Enabled protocols are shown in [] brackets. 29 30 Writing "+proto" will add a protocol to the list of enabled 31 protocols. 32 33 Writing "-proto" will remove a protocol from the list of enabled 34 protocols. 35 36 Writing "proto" will enable only "proto". 37 38 Writing "none" will disable all protocols. 39 40 Write fails with EINVAL if an invalid protocol combination or 41 unknown protocol name is used. 42 43What: /sys/class/rc/rc<N>/filter 44Date: Jan 2014 45KernelVersion: 3.15 46Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 47Description: 48 Sets the scancode filter expected value. 49 50 Use in combination with /sys/class/rc/rcN/filter_mask to set the 51 expected value of the bits set in the filter mask. 52 If the hardware supports it then scancodes which do not match 53 the filter will be ignored. Otherwise the write will fail with 54 an error. 55 56 This value may be reset to 0 if the current protocol is altered. 57 58What: /sys/class/rc/rc<N>/filter_mask 59Date: Jan 2014 60KernelVersion: 3.15 61Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 62Description: 63 Sets the scancode filter mask of bits to compare. 64 Use in combination with /sys/class/rc/rcN/filter to set the bits 65 of the scancode which should be compared against the expected 66 value. A value of 0 disables the filter to allow all valid 67 scancodes to be processed. 68 69 If the hardware supports it then scancodes which do not match 70 the filter will be ignored. Otherwise the write will fail with 71 an error. 72 73 This value may be reset to 0 if the current protocol is altered. 74 75What: /sys/class/rc/rc<N>/wakeup_protocols 76Date: Feb 2017 77KernelVersion: 4.11 78Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 79Description: 80 Reading this file returns a list of available protocols to use 81 for the wakeup filter, something like:: 82 83 "rc-5 nec nec-x rc-6-0 rc-6-6a-24 [rc-6-6a-32] rc-6-mce" 84 85 Note that protocol variants are listed, so "nec", "sony", 86 "rc-5", "rc-6" have their different bit length encodings 87 listed if available. 88 89 The enabled wakeup protocol is shown in [] brackets. 90 91 Only one protocol can be selected at a time. 92 93 Writing "proto" will use "proto" for wakeup events. 94 95 Writing "none" will disable wakeup. 96 97 Write fails with EINVAL if an invalid protocol combination or 98 unknown protocol name is used, or if wakeup is not supported by 99 the hardware. 100 101What: /sys/class/rc/rc<N>/wakeup_filter 102Date: Jan 2014 103KernelVersion: 3.15 104Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 105Description: 106 Sets the scancode wakeup filter expected value. 107 108 Use in combination with /sys/class/rc/rcN/wakeup_filter_mask to 109 set the expected value of the bits set in the wakeup filter mask 110 to trigger a system wake event. 111 112 If the hardware supports it and wakeup_filter_mask is not 0 then 113 scancodes which match the filter will wake the system from e.g. 114 suspend to RAM or power off. 115 116 Otherwise the write will fail with an error. 117 118 This value may be reset to 0 if the wakeup protocol is altered. 119 120What: /sys/class/rc/rc<N>/wakeup_filter_mask 121Date: Jan 2014 122KernelVersion: 3.15 123Contact: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> 124Description: 125 Sets the scancode wakeup filter mask of bits to compare. 126 127 Use in combination with /sys/class/rc/rcN/wakeup_filter to set 128 the bits of the scancode which should be compared against the 129 expected value to trigger a system wake event. 130 131 If the hardware supports it and wakeup_filter_mask is not 0 then 132 scancodes which match the filter will wake the system from e.g. 133 suspend to RAM or power off. 134 135 Otherwise the write will fail with an error. 136 137 This value may be reset to 0 if the wakeup protocol is altered.