xref: /linux/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff (revision bbfd0ccc598ded2ec9f618f10b5bc54b1130f4d3)
1*bbfd0cccSMichal MalýWhat:		/sys/bus/hid/drivers/logitech/<dev>/range
218e10abaSMichal MalýDate:		July 2011
318e10abaSMichal MalýKernelVersion:	3.2
4*bbfd0cccSMichal MalýContact:	Michal Malý <madcatxster@devoid-pointer.net>
518e10abaSMichal MalýDescription:	Display minimum, maximum and current range of the steering
618e10abaSMichal Malý		wheel. Writing a value within min and max boundaries sets the
718e10abaSMichal Malý		range of the wheel.
8b96d23ecSMichal Malý
9b96d23ecSMichal MalýWhat:		/sys/bus/hid/drivers/logitech/<dev>/alternate_modes
10b96d23ecSMichal MalýDate:		Feb 2015
11b96d23ecSMichal MalýKernelVersion:	4.1
12*bbfd0cccSMichal MalýContact:	Michal Malý <madcatxster@devoid-pointer.net>
13b96d23ecSMichal MalýDescription:	Displays a set of alternate modes supported by a wheel. Each
14b96d23ecSMichal Malý		mode is listed as follows:
15b96d23ecSMichal Malý		  Tag: Mode Name
16b96d23ecSMichal Malý		Currently active mode is marked with an asterisk. List also
17b96d23ecSMichal Malý		contains an abstract item "native" which always denotes the
18f31a2de3SMichal Malý		native mode of the wheel. Echoing the mode tag switches the
19f31a2de3SMichal Malý		wheel into the corresponding mode. Depending on the exact model
20f31a2de3SMichal Malý		of the wheel not all listed modes might always be selectable.
21f31a2de3SMichal Malý		If a wheel cannot be switched into the desired mode, -EINVAL
22f31a2de3SMichal Malý		is returned accompanied with an explanatory message in the
23f31a2de3SMichal Malý		kernel log.
24f31a2de3SMichal Malý		This entry is not created for devices that have only one mode.
25f31a2de3SMichal Malý
26f31a2de3SMichal Malý		Currently supported mode switches:
27f31a2de3SMichal Malý		Driving Force Pro:
28f31a2de3SMichal Malý		  DF-EX --> DFP
29f31a2de3SMichal Malý
30f31a2de3SMichal Malý		G25:
31f31a2de3SMichal Malý		  DF-EX --> DFP --> G25
32f31a2de3SMichal Malý
33f31a2de3SMichal Malý		G27:
34f31a2de3SMichal Malý		  DF-EX <*> DFP <-> G25 <-> G27
35f31a2de3SMichal Malý		  DF-EX <*--------> G25 <-> G27
36f31a2de3SMichal Malý		  DF-EX <*----------------> G27
37f31a2de3SMichal Malý
38f31a2de3SMichal Malý		DFGT:
39f31a2de3SMichal Malý		  DF-EX <*> DFP <-> DFGT
40f31a2de3SMichal Malý		  DF-EX <*--------> DFGT
41f31a2de3SMichal Malý
42f31a2de3SMichal Malý		* hid_logitech module must be loaded with lg4ff_no_autoswitch=1
43f31a2de3SMichal Malý		  parameter set in order for the switch to DF-EX mode to work.
44b96d23ecSMichal Malý
45b96d23ecSMichal MalýWhat:		/sys/bus/hid/drivers/logitech/<dev>/real_id
46b96d23ecSMichal MalýDate:		Feb 2015
47b96d23ecSMichal MalýKernelVersion:	4.1
48*bbfd0cccSMichal MalýContact:	Michal Malý <madcatxster@devoid-pointer.net>
49b96d23ecSMichal MalýDescription:	Displays the real model of the wheel regardless of any
50b96d23ecSMichal Malý		alternate mode the wheel might be switched to.
51b96d23ecSMichal Malý		It is a read-only value.
52b96d23ecSMichal Malý		This entry is not created for devices that have only one mode.
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