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HarryCuttsbentiss
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HID: logitech: Enable high-resolution scrolling on Logitech mice
There are three features used by various Logitech mice for high-resolution scrolling: the scrolling acceleration bit in HID++ 1.0, and the x2120 and x2121 features in HID++ 2.0 and above. This patch supports all three, and uses the multiplier reported by the mouse for the HID++ 2.0+ features. The full list of product IDs of mice which support high-resolution scrolling was provided by Logitech, but the patch was tested using the following mice (using the Unifying receiver): * HID++ 1.0: Anywhere MX, Performance MX * x2120: M560 * x2121: MX Anywhere 2, MX Master 2S This patch is a combinations of the now-reverted commits 1ff2e1a, d56ca98, 5fe2ccb, 044ee89 together with some extra bits for the directional and timeout-based reset. The previous patch series was in hid-input, it appears this remainder handling is logitech-specific and was moved to hid-logitech-hidpp.c and renamed accordingly. Signed-off-by: Harry Cutts <hcutts@chromium.org> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Verified-by: Harry Cutts <hcutts@chromium.org> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
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