From 26fe41245f43c86f65cae272a2851dd792e443f7 Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Tue, 18 Nov 2014 16:50:09 -0800 Subject: [PATCH] HID: wacom: Add angular resolution data to some ABS axes Provide the resolution of several angular axes (tilt, pen rotation, puck rotation) to userspace. Because these values are natively degree-based, we need to convert them to into units/radian as required by the input_absinfo struct. To ensure wraparound behaves properly for the rotation axes, the converted value was rounded up rather than rounded nearest. Notably, the touchring axes (ABS_WHEEL and ABS_THROTTLE) are left without a a declared resolution because the their low resolution cannot be accurately represented (the worst-case rounding-induced error would be ~16 degrees). Pre-scaling the values and range by at least 10x would reduce the error in the resolution to acceptable levels, but the xf86-input-wacom driver is not able to use pre-scaled values for these axes at this time. Signed-off-by: Jason Gerecke Reviewed-by: Ping Cheng Signed-off-by: Jiri Kosina --- Reading git-format-patch failed