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