Using serio_register_driver

Using serio_register_driver

[Fausto Carvalho]

I have a driver that have to coexist with ATKBD accessing the same
i8042 platform driver. But when a use serio_register_driver and
program the serio_driver.interrupt i only get the atkbd to respond!!
Is there any way to use ATKBD with another i8042 driver( serio)??
Any help is wellcome.

-- 
Fausto Carvalho

Re: Fwd: Using serio_register_driver

[Fausto Carvalho]

Well, i have a 8042 controller "connected" to the keyboard controller
that send information about battery and others to the keyboard
interrupt and io ports in the format of keystrokes. I want a way to
not alter atkbd but to create another driver that lives together with
atkbd. Is there a way?


On 2/27/07, Dmitry Torokhov <dtor@insightbb.com> wrote:
> On Monday 26 February 2007 20:32, Fausto Carvalho wrote:
> > Can you help me??
> >
> > ---------- Forwarded message ----------
> > From: Fausto Carvalho <faustocarva@gmail.com>
> > Date: Feb 26, 2007 8:03 PM
> > Subject: Using serio_register_driver
> > To: linux-kernel@vger.kernel.org
> >
> >
> > I have a driver that have to coexist with ATKBD accessing the same
> > i8042 platform driver. But when a use serio_register_driver and
> > program the serio_driver.interrupt i only get the atkbd to respond!!
> > Is there any way to use ATKBD with another i8042 driver( serio)??
> > Any help is wellcome.
> >
>
> Hi,
>
> Unfortunately you can't attach more than one driver to a serio port.
> Could you tell me what you are trying to achive in your driver?
>
> --
> Dmitry
>


-- 
Fausto Carvalho

Re: Fwd: Using serio_register_driver

[Dmitry Torokhov]

On 2/27/07, Fausto Carvalho <faustocarva@gmail.com> wrote:
> Well, i have a 8042 controller "connected" to the keyboard controller
> that send information about battery and others to the keyboard
> interrupt and io ports in the format of keystrokes. I want a way to
> not alter atkbd but to create another driver that lives together with
> atkbd. Is there a way?
>

Depending on how big and box-specific the code is we could either add
it to i8042
or you need to imaplement a pass-through serio port in your driver.
You would filter out "interesting" bytes and pass the rest to the new
serio port that your driver shoudl register. Tnen atkbd would bind to
that new port and function as usual. The only problem is that you
woudl need to bind you driver to the keyboard port from userspace (via
sysfs - /sys/bus/devices/serioX/drvctl)

-- 
Dmitry