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authorPeter Hutterer <peter.hutterer@who-t.net>2015-03-19 14:19:58 +1000
committerPeter Hutterer <peter.hutterer@who-t.net>2015-04-11 08:44:33 +1000
commit51c0c2869845a058268d54c3111d55d0dd485704 (patch)
treec2da7abb5eee37b67e998393e24c100dfaff5b6f /docs
parent8a0fd83cf03547653a195582ba004d2ff69dfbd0 (diff)
udev: builtin-keyboard: add support for EVDEV_ABS_*
Parse properties in the form EVDEV_ABS_00="<min>:<max>:<res>:<fuzz>:<flat>" and apply them to the kernel device. Future processes that open that device will see the updated EV_ABS range. This is particularly useful for touchpads that don't provide a resolution in the kernel driver but can be fixed up through hwdb entries (e.g. bcm5974). All values in the property are optional, e.g. a string of "::45" is valid to set the resolution to 45. The order intentionally orders resolution before fuzz and flat despite it being the last element in the absinfo struct. The use-case for setting fuzz/flat is almost non-existent, resolution is probably the most common case we'll need. To avoid multiple hwdb invocations for the same device, replace the hwdb "keyboard:" prefix with "evdev:" and drop the separate 60-keyboard.rules file. The new 60-evdev.rules is called for all event nodes anyway, we don't need a separate rules file and second callout to the hwdb builtin.
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