Re: /dev/psaux-Interface

[Arjan van de Ven]

> No.   That's not  a  problem  specific with  my  touchscreen.  It's  a
> general  problem  with   the  design  of  the  input   layer.   It  is
> implementing  *policies*  (on how  to  interpret  data  read from  the
> PS2/AUX port), instead of providing  a *mechanism* to access (read and
> write) that port.

well, it's the kernels job to abstract hardware. You don't also expose
raw scsi and ide devices to userspace, you abstract them away and
provide a uniform "block device" interface to userspace.
The input layer tries to do the same wrt HID devices and imo it makes
sense. Why should userspace care if a mouse is attached to the USB port
or via the USB->PS/2 connector thingy to the PS/2 port. Requiring
different configuration for both cases, and potentially even requiring
different userspace applications for each type make it sound like
abstracting this away from userspace does have merit.

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