From: Russell Shaw <rjshaw@netspace.net.au>
Cc: linux-input <linux-input@vger.kernel.org>
Subject: Re: Evdev uniq id
Date: Sat, 06 Nov 2010 20:49:55 +1100 [thread overview]
Message-ID: <4CD524C3.10300@netspace.net.au> (raw)
In-Reply-To: <20101106094541.GA16663@core.coreip.homeip.net>
On 06/11/10 20:45, Dmitry Torokhov wrote:
> Hi Russell,
>
> On Fri, Nov 05, 2010 at 03:42:19PM +1100, Russell Shaw wrote:
>> Hi,
>> In X, i want an application program to apply settings to a specific
>> mouse/puck device, regardless of how many other devices have been
>> plugged in since the last session.
>>
>> Prefereably, a manufacturer-model-serial_number call would be available
>> from evdev.
>>
>> Minimally, a uniq non-changing ID could be useful. I found this in
>> linux-2.6.31.1/drivers/input/evdev.c:
>>
>> if (_IOC_NR(cmd) == _IOC_NR(EVIOCGUNIQ(0)))
>> return str_to_user(dev->uniq, _IOC_SIZE(cmd), p);
>>
>> How is "dev->uniq" constructed?
>
> USB HID devices populate this field with data from descriptor.iSerialNumber.
> I suppose we should do that in other USB drivers as well, patches are
> welcome.
Hi Dmitry.T,
I was just getting around to seeing if i could add manufacturer-model-
serial_number ioctl functionality.
next prev parent reply other threads:[~2010-11-06 9:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-05 4:42 Evdev uniq id Russell Shaw
2010-11-06 9:45 ` Dmitry Torokhov
2010-11-06 9:49 ` Russell Shaw [this message]
2010-11-06 14:47 ` Chris Bagwell
2010-11-06 15:39 ` Dmitry Torokhov
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