linux-kernel - Re: Wacom based devices and the mt kernel protocol.

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Message-ID: <AANLkTikR0PXLqYuK8jDd_pWvcmVlRLnQFLVElHH8e71a@mail.gmail.com>
Date:	Sun, 20 Jun 2010 22:30:26 -0700
From:	Ping Cheng <pinglinux@...il.com>
To:	Rafi Rubin <rafi@...s.upenn.edu>
Cc:	Mohamed Ikbel Boulabiar <boulabiar@...il.com>,
	Henrik Rydberg <rydberg@...omail.se>,
	Chase Douglas <chase.douglas@...onical.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Kosina <jkosina@...e.cz>
Subject: Re: Wacom based devices and the mt kernel protocol.

On Sun, Jun 20, 2010 at 6:19 PM, Rafi Rubin <rafi@...s.upenn.edu> wrote:
>>
>>>>> This impact very much the decision of a Linux user wanting to buy wacom mt device.
>>>>
>>>> I think end users have already got the Linux support from Wacom.  Can
>>>> you share the specific issues that are preventing Linux end users from
>>>> buying a Wacom MT devices? If I didn't misunderstand your point here,
>>>> you are talking about Linux users, not Linux developers/hackers,
>>>> right?
>>>
>>> I think normal users wanting to use linux for MT are generally frustrated and
>>> confused at the moment.
>>
>> Why do the end users get frustrated and confused? Can you share some
>> examples from an end user's (not developer's) perspective with me?
>
> Sorry, I've been too focused on the n-trig users.  They have been frustrated,
> and I've seen from the forums that some have been playing with customized
> versions of both the kernel and wacom x driver to get your two finger gestures.
>
> I'm also projecting my own frustrations, seeing the X mt interface still not
> quite set, and very little in the way of applications that use mt at all.
> We're still quite a ways away from seeing the full potential of a more hands on desktop.

As far as I understand,  this issue is not device driver or MT support
specific. It is universal  on Linux.

>>> Certainly the protocol between the wacom kernel driver
>>> and the wacom user space driver is way below the level that most are following.
>>
>> By "most", do you mean most MT device drivers, or most end users, or
>> most developers? I am eager to bring the Wacom driver to the specific
>> level.
>
> End users, they don't tend to care about the internal protocols as long as their
> programs do what they want.

Then, I still don't get what you meant by "way below the level that
most are following". I'd really like to understand it so I can work on
it.

Thank you,

Ping
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