| What: /sys/bus/hid/drivers/logitech-hidpp-device/<dev>/range | |
| Date: Jan, 2016 | |
| KernelVersion: 4.6 | |
| Contact: linux-input@vger.kernel.org | |
| Description: | |
| (RW) This attribute controls the amount of 'turn' permitted in | |
| Logitech G920 wheel. Reading from the file shows the current | |
| range of the steering wheel. Writing a value within the min and | |
| max boundary sets the range of the wheel. | |
| What: /sys/bus/hid/drivers/logitech-hidpp-device/<dev>/builtin_power_supply | |
| Date: Apr, 2017 | |
| KernelVersion: 4.12 | |
| Contact: linux-input@vger.kernel.org | |
| Description: | |
| Presence of this file indicates that HID++ driver is capable of | |
| handling battery properties in the kernel. This way, upower can | |
| add a udev rule to decide whether or not it should use the | |
| internal unifying support or the generic kernel one. |