xref: /OK3568_Linux_fs/kernel/Documentation/ABI/testing/sysfs-driver-hid-logitech-lg4ff (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593SmuzhiyunWhat:		/sys/bus/hid/drivers/logitech/<dev>/range
2*4882a593SmuzhiyunDate:		July 2011
3*4882a593SmuzhiyunKernelVersion:	3.2
4*4882a593SmuzhiyunContact:	Michal Malý <madcatxster@devoid-pointer.net>
5*4882a593SmuzhiyunDescription:	Display minimum, maximum and current range of the steering
6*4882a593Smuzhiyun		wheel. Writing a value within min and max boundaries sets the
7*4882a593Smuzhiyun		range of the wheel.
8*4882a593Smuzhiyun
9*4882a593SmuzhiyunWhat:		/sys/bus/hid/drivers/logitech/<dev>/alternate_modes
10*4882a593SmuzhiyunDate:		Feb 2015
11*4882a593SmuzhiyunKernelVersion:	4.1
12*4882a593SmuzhiyunContact:	Michal Malý <madcatxster@devoid-pointer.net>
13*4882a593SmuzhiyunDescription:	Displays a set of alternate modes supported by a wheel. Each
14*4882a593Smuzhiyun		mode is listed as follows:
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun		  Tag: Mode Name
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun		Currently active mode is marked with an asterisk. List also
19*4882a593Smuzhiyun		contains an abstract item "native" which always denotes the
20*4882a593Smuzhiyun		native mode of the wheel. Echoing the mode tag switches the
21*4882a593Smuzhiyun		wheel into the corresponding mode. Depending on the exact model
22*4882a593Smuzhiyun		of the wheel not all listed modes might always be selectable.
23*4882a593Smuzhiyun		If a wheel cannot be switched into the desired mode, -EINVAL
24*4882a593Smuzhiyun		is returned accompanied with an explanatory message in the
25*4882a593Smuzhiyun		kernel log.
26*4882a593Smuzhiyun		This entry is not created for devices that have only one mode.
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun		Currently supported mode switches:
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun		Driving Force Pro::
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun		  DF-EX --> DFP
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun		G25::
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun		  DF-EX --> DFP --> G25
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun		G27::
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun		  DF-EX <*> DFP <-> G25 <-> G27
41*4882a593Smuzhiyun		  DF-EX <*--------> G25 <-> G27
42*4882a593Smuzhiyun		  DF-EX <*----------------> G27
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun		G29::
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun		  DF-EX <*> DFP <-> G25 <-> G27 <-> G29
47*4882a593Smuzhiyun		  DF-EX <*--------> G25 <-> G27 <-> G29
48*4882a593Smuzhiyun		  DF-EX <*----------------> G27 <-> G29
49*4882a593Smuzhiyun		  DF-EX <*------------------------> G29
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun		DFGT::
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun		  DF-EX <*> DFP <-> DFGT
54*4882a593Smuzhiyun		  DF-EX <*--------> DFGT
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun		* hid_logitech module must be loaded with lg4ff_no_autoswitch=1
57*4882a593Smuzhiyun		  parameter set in order for the switch to DF-EX mode to work.
58*4882a593Smuzhiyun
59*4882a593SmuzhiyunWhat:		/sys/bus/hid/drivers/logitech/<dev>/real_id
60*4882a593SmuzhiyunDate:		Feb 2015
61*4882a593SmuzhiyunKernelVersion:	4.1
62*4882a593SmuzhiyunContact:	Michal Malý <madcatxster@devoid-pointer.net>
63*4882a593SmuzhiyunDescription:	Displays the real model of the wheel regardless of any
64*4882a593Smuzhiyun		alternate mode the wheel might be switched to.
65*4882a593Smuzhiyun		It is a read-only value.
66*4882a593Smuzhiyun		This entry is not created for devices that have only one mode.
67*4882a593Smuzhiyun
68*4882a593SmuzhiyunWhat:		/sys/bus/hid/drivers/logitech/<dev>/combine_pedals
69*4882a593SmuzhiyunDate:		Sep 2016
70*4882a593SmuzhiyunKernelVersion:	4.9
71*4882a593SmuzhiyunContact:	Simon Wood <simon@mungewell.org>
72*4882a593SmuzhiyunDescription:	Controls whether a combined value of accelerator and brake is
73*4882a593Smuzhiyun		reported on the Y axis of the controller. Useful for older games
74*4882a593Smuzhiyun		which can do not work with separate accelerator/brake axis.
75*4882a593Smuzhiyun		Off ('0') by default, enabled by setting '1'.
76