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From: Henrik Rydberg <rydberg@euromail.se>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>,
	linux-input@vger.kernel.org, kyungmin.park@samsung.com
Subject: Re: [PATCH v2] input: qt602240 - Add ATMEL QT602240 touchscreen driver
Date: Mon, 28 Jun 2010 10:46:59 +0200	[thread overview]
Message-ID: <4C286183.6080304@euromail.se> (raw)
In-Reply-To: <20100628084212.GE25287@core.coreip.homeip.net>

Dmitry Torokhov wrote:
> On Mon, Jun 28, 2010 at 10:34:13AM +0200, Henrik Rydberg wrote:
>> It is a bit confusing I agree, but the document is correct. The empty
>> input_mt_sync() is used when there is no data to report, no lifted fingers,
>> nothing. Just imagine a device which gets polled periodically.
> 
> If there is no new data to report why we need to call input_mt_sync() at
> all? You can send input_sync() but input core will filter it out...
> 

Yep, that is the reason. Admittedly, this is a corner cases that type A does not
handle very gracefully, but it works. The only device so far where this seems
useful is for the magic mouse, which does not want to report BTN_TOUCH at all.

Henrik

  reply	other threads:[~2010-06-28  8:47 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-25  1:54 [PATCH v2] input: qt602240 - Add ATMEL QT602240 touchscreen driver Joonyoung Shim
2010-06-25 14:08 ` Henrik Rydberg
2010-06-28  5:16   ` Joonyoung Shim
2010-06-28  7:37     ` Henrik Rydberg
2010-06-28  8:17       ` Joonyoung Shim
2010-06-28  8:34         ` Henrik Rydberg
2010-06-28  8:42           ` Dmitry Torokhov
2010-06-28  8:46             ` Henrik Rydberg [this message]
2010-06-28  9:01               ` Dmitry Torokhov
2010-06-28  9:10                 ` Henrik Rydberg
2010-06-28  9:05           ` Joonyoung Shim
2010-06-28  9:17             ` Henrik Rydberg
2010-06-28 10:00               ` Joonyoung Shim
2010-06-28 10:22                 ` Henrik Rydberg
2010-06-28 11:12                   ` Joonyoung Shim
2010-06-28 12:23                     ` Henrik Rydberg
2010-06-28 12:58                       ` Joonyoung Shim
2010-06-28 13:24                         ` Henrik Rydberg
2010-06-28 13:41                           ` Joonyoung Shim
     [not found]                             ` <AANLkTikNh-LTClIgXGAIEkegLCmWNnN2Zk05XhZWOumb@mail.gmail.com>
2010-06-28 14:33                               ` Dan Murphy
2010-06-29  3:33                               ` Joonyoung Shim

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