[systemd-devel] [PATCH v2 1/4] udev: Add rules and hwdb files for setting pointingstick properties

[Peter Hutterer]

On Fri, Apr 03, 2015 at 04:11:57PM +0200, Hans de Goede wrote:
> There is quite a wide spread in the delta events generated by pointingsticks,
> some generate deltas of 1-2 under normal use, while others generate deltas
> from 1-20.
> 
> This commit adds a set of rules + a hwdb file which allows specifying a
> per model POINTINGSTICK_CONST_ACCEL value which can be used by the userspace
> input stack to normalize the deltas so that all pointingsticks get the same
> speed/feeling ootb.
> 
> The hwdb matching is modelled after 60-keyboard.rules, rather then after

s/then/than/

Cheers,
   Peter

> 70-mouse.rules, as pointingsticks are typically (but not always) found
> integrated into laptops and the keyboard matching rules are a better match
> to this.
> ---
>  hwdb/70-pointingstick.hwdb   | 59 ++++++++++++++++++++++++++++++++++++++++++++
>  rules/70-mouse.rules         |  1 +
>  rules/70-pointingstick.rules | 16 ++++++++++++
>  3 files changed, 76 insertions(+)
>  create mode 100644 hwdb/70-pointingstick.hwdb
>  create mode 100644 rules/70-pointingstick.rules
> 
> diff --git a/hwdb/70-pointingstick.hwdb b/hwdb/70-pointingstick.hwdb
> new file mode 100644
> index 0000000..a893da6
> --- /dev/null
> +++ b/hwdb/70-pointingstick.hwdb
> @@ -0,0 +1,59 @@
> +# This file is part of systemd.
> +#
> +# Pointingstick const-accel configuration, to make different brand / model
> +# laptop pointingsticks have the same speed / feel, and per model adjustment
> +# of the IBM TrackPoint driver's sensitivty setting
> +#
> +# The lookup keys are composed in:
> +#   70-pointingstick.rules
> +#
> +# Note: The format of the "pointingstick:" prefix match key is a
> +# contract between the rules file and the hardware data, it might
> +# change in later revisions to support more or better matches, it
> +# is not necessarily expected to be a stable ABI.
> +#
> +# Supported hardware matches are:
> +#  - Generic input devices match:
> +#      pointingstick:input:bZZZZvYYYYpXXXXeWWWW-VVVV
> +#    This matches on the kernel modalias of the input-device, mainly:
> +#    ZZZZ is the bus-id (see /usr/include/linux/input.h BUS_*), YYYY, XXXX and
> +#    WWW are the 4-digit hex uppercase vendor, product and version ID and VVVV
> +#    is an arbitrary length input-modalias describing the device capabilities.
> +#
> +#  - Input driver device name and DMI data match:
> +#      pointingstick:name:<input device name>:dmi:bvn*:bvr*:bd*:svn<vendor>:pn*
> +#    <input device name> is the name device specified by the driver,
> +#    <vendor> is the firmware-provided string from the kernel DMI modalias.
> +#
> +# To add local entries, create a new file
> +#   /etc/udev/hwdb.d/71-pointingstick-local.hwdb
> +# and add your rules there. To load the new rules execute (as root):
> +#   udevadm hwdb --update
> +#   udevadm trigger /dev/input/eventXX
> +# where /dev/input/eventXX is the pointingstick in question. If in
> +# doubt, simply use /dev/input/event* to reload all input rules.
> +#
> +# If your changes are generally applicable, open a bug report on
> +#   http://bugs.freedesktop.org/enter_bug.cgi?product=systemd
> +# and include your new rules, a description of the device, and the
> +# output of
> +#   udevadm info /dev/input/eventXX
> +# (or /dev/input/event*).
> +#
> +# Allowed properties are:
> +#   POINTINGSTICK_CONST_ACCEL
> +#
> +#########################################
> +#      POINTINGSTICK_CONST_ACCEL        #
> +#########################################
> +#
> +# Trackpoint const accel settings are specified as
> +#    POINTINGSTICK_CONST_ACCEL=<accel>
> +#
> +# Where <accel> is a floating point number, using a '.' seperator, specifying
> +# by how much to multiply deltas generated by the pointingstick to get
> +# normalized deltas.
> +#
> +
> +#
> +# Sort by by brand, model
> diff --git a/rules/70-mouse.rules b/rules/70-mouse.rules
> index 3ea743a..4f1e32d 100644
> --- a/rules/70-mouse.rules
> +++ b/rules/70-mouse.rules
> @@ -3,6 +3,7 @@
>  ACTION=="remove", GOTO="mouse_end"
>  KERNEL!="event*", GOTO="mouse_end"
>  ENV{ID_INPUT_MOUSE}=="", GOTO="mouse_end"
> +ENV{ID_INPUT_POINTINGSTICK}=="1", GOTO="mouse_end"
>  
>  # mouse:<subsystem>:v<vid>p<pid>:name:<name>:*
>  KERNELS=="input*", ENV{ID_BUS}=="usb", \
> diff --git a/rules/70-pointingstick.rules b/rules/70-pointingstick.rules
> new file mode 100644
> index 0000000..5a853f3
> --- /dev/null
> +++ b/rules/70-pointingstick.rules
> @@ -0,0 +1,16 @@
> +# do not edit this file, it will be overwritten on update
> +
> +ACTION=="remove", GOTO="pointingstick_end"
> +KERNEL!="event*", GOTO="pointingstick_end"
> +ENV{ID_INPUT_POINTINGSTICK}=="", GOTO="pointingstick_end"
> +
> +# skip later rules when we find something for this input device
> +IMPORT{builtin}="hwdb --subsystem=input --lookup-prefix=pointingstick:", \
> +  GOTO="pointingstick_end"
> +
> +# device matching the input device name and the machine's DMI data
> +KERNELS=="input*", \
> +  IMPORT{builtin}="hwdb 'pointingstick:name:$attr{device/name}:$attr{[dmi/id]modalias}'", \
> +  GOTO="pointingstick_end"
> +
> +LABEL="pointingstick_end"
> -- 
> 2.3.4
> 
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