From: Christoph Fritz <chf.fritz@googlemail.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>,
"Datta, Shubhrajyoti" <shubhrajyoti@ti.com>,
"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>
Subject: Re: [RFC][PATCHv3 1/2] SFH7741: proximity sensor driver support
Date: Wed, 12 May 2010 22:08:15 +0200 [thread overview]
Message-ID: <1273694895.15717.4.camel@lovely> (raw)
In-Reply-To: <20100512182913.GC29366@core.coreip.homeip.net>
On Wed, 2010-05-12 at 11:29 -0700, Dmitry Torokhov wrote:
> On Wed, May 12, 2010 at 07:15:22PM +0100, Jonathan Cameron wrote:
> > Hi,
> >
> > I was wondering if you could provide a bit more detail on what this
> > driver is actually doing? My appologies if I have missed a
> > previous explanation. If so, please add a Documentation file
> > to explain what is going on.
> >
> > The driver you have here does virtually nothing itself. It takes
> > both its source of interrupt and read function from platform
> > data. Given the value is always 0 or 1, I'm guessing you are
> > simply reading a gpio pin. That makes this effectively a button
> > and doesn't require any specific code. The fact it is a
> > proximity sensor isn't relevant to anything other than perhaps
> > the name.
>
> Excellent point. Maybe it should simply use gpio_keys driver with
> SW_FRONT_PROXIMITY code.
>
I had a look into the datasheet, this SFH 7741 has one Schmitt trigger
output: So yes, it's a "key" even without chatter.
next prev parent reply other threads:[~2010-05-12 20:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-12 15:26 [RFC][PATCHv3 1/2] SFH7741: proximity sensor driver support Datta, Shubhrajyoti
2010-05-12 18:15 ` Jonathan Cameron
2010-05-12 18:29 ` Dmitry Torokhov
2010-05-12 20:08 ` Christoph Fritz [this message]
2010-05-13 6:46 ` Hemanth V
2010-05-13 7:50 ` Dmitry Torokhov
2010-05-13 8:04 ` Hemanth V
2010-05-13 8:12 ` Dmitry Torokhov
2010-05-14 8:53 ` Datta, Shubhrajyoti
2010-05-12 18:25 ` Dmitry Torokhov
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