Re: [PATCH 5/6] input: Add keycodes used by Lenovo Carbon X1 2014
From: Henrique de Moraes Holschuh
Date: Mon Feb 23 2015 - 09:10:22 EST
On Mon, Feb 23, 2015, at 08:41, Bastien Nocera wrote:
> > You could opt to change some of those keypresses dinamically into
> > driver-specific
> > ACPI events, by setting the keymap entry to KEY_RESERVED. The driver
> > will
> > issue HKEY events in that case. That will be an viable alternative for
> > some of the new
> > keys.
> I don't understand what you mean here.
I mean please set anything that you don't have a keycode for in the new
keymaps to either KEY_RESERVED (will issue an HKEY ACPI event) or
KEY_UNKNOWN (will issue an input EV_KEY event for KEY_UNKNOWN grouped
with an EV_MSC EV MSC_SCAN event that allows userspace to know which key
was pressed/released even if it has no specific keycode).
> > The beauty of it is that keymaps are configurable in run-time, so
> > userspace can
> > just set any key entries it wants to change to something else, and ACPI
> > events will be
> > suppressed if the entry is not set to KEY_RESERVED anymore.
> Keymaps are already configurable at run-time, that's how udev changes
> keymaps. Or did you mean something else?
I mean if anyone wants to change something that is KEY_RESERVED or
KEY_UNKNOWN they can configure the driver to do so at runtime through
the input device interface, i.e. get udev to do it.
Nothing new, there.
> > We need to be careful with tpacpi_input_send_key_masked(). If any of the
> > codepaths
> > could call it from the adaptative keyboard handling code,
> But we're not calling it from there, are we?
Probably not, but it would be a good idea to double-check.
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