18c2ecf20Sopenharmony_ciWhat: /sys/bus/hid/drivers/logitech-hidpp-device/<dev>/range 28c2ecf20Sopenharmony_ciDate: Jan, 2016 38c2ecf20Sopenharmony_ciKernelVersion: 4.6 48c2ecf20Sopenharmony_ciContact: linux-input@vger.kernel.org 58c2ecf20Sopenharmony_ciDescription: 68c2ecf20Sopenharmony_ci (RW) This attribute controls the amount of 'turn' permitted in 78c2ecf20Sopenharmony_ci Logitech G920 wheel. Reading from the file shows the current 88c2ecf20Sopenharmony_ci range of the steering wheel. Writing a value within the min and 98c2ecf20Sopenharmony_ci max boundary sets the range of the wheel. 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ciWhat: /sys/bus/hid/drivers/logitech-hidpp-device/<dev>/builtin_power_supply 128c2ecf20Sopenharmony_ciDate: Apr, 2017 138c2ecf20Sopenharmony_ciKernelVersion: 4.12 148c2ecf20Sopenharmony_ciContact: linux-input@vger.kernel.org 158c2ecf20Sopenharmony_ciDescription: 168c2ecf20Sopenharmony_ci Presence of this file indicates that HID++ driver is capable of 178c2ecf20Sopenharmony_ci handling battery properties in the kernel. This way, upower can 188c2ecf20Sopenharmony_ci add a udev rule to decide whether or not it should use the 198c2ecf20Sopenharmony_ci internal unifying support or the generic kernel one. 20