From: "Jürgen Beisert" <jbe@pengutronix.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Jonathan Cameron <jic23@kernel.org>,
linux-iio@vger.kernel.org, devel@driverdev.osuosl.org,
marex@denx.de, fabio.estevam@freescale.com, jic23@cam.ac.uk,
Torokhov <dmitry.torokhov@gmail.com>,
"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>
Subject: Re: [PATCH 5/6] Staging/iio/adc/touchscreen/MXS: add interrupt driven touch detection
Date: Thu, 19 Sep 2013 14:49:37 +0200 [thread overview]
Message-ID: <201309191449.37274.jbe@pengutronix.de> (raw)
In-Reply-To: <0fb59809-c835-49b0-bd82-e791db1a9db7@email.android.com>
Hi Jonathan,
On Monday 16 September 2013 17:30:32 Jonathan Cameron wrote:
> >On Sunday 15 September 2013 12:56:25 Jonathan Cameron wrote:
> >> On 09/11/13 09:18, Juergen Beisert wrote:
> >> > For battery driven systems it is a very bad idea to collect the
> >> > touchscreen data within a kernel busy loop.
> >> >
> >> > This change uses the features of the hardware to delay and
> >> > accumulate samples in hardware to avoid a high interrupt and CPU loa=
d.
> >> >
> >> > Note: this is only tested on an i.MX23 SoC yet.
> >> >
> >> > Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
> >> > CC: linux-arm-kernel@lists.infradead.org
> >> > CC: devel@driverdev.osuosl.org
> >> > CC: Marek Vasut <marex@denx.de>
> >> > CC: Fabio Estevam <fabio.estevam@freescale.com>
> >> > CC: Jonathan Cameron <jic23@cam.ac.uk>
> >>
> >> While this driver is placed in IIO within staging at the moment,
> >> these changes are definitely input related. Hence I have cc'd Dmitry =
and
> >> the input list.
> >>
> >> I am personaly a little uncomfortable that we have such a complex bit
> >> of input code sat within an IIO driver but such is life.
> >
> > Maybe an MFD for this ADC unit would be a better way to go?
>
> That would be great and is definitely the preferred method.
Cannot continue to convert the driver into an MFD device. The project does =
not=20
give me the time to do so.
Regards,
Juergen
=2D-=20
Pengutronix e.K. =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0| Juergen Beisert =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |
Linux Solutions for Science and Industry =C2=A0 =C2=A0 =C2=A0| http://www.p=
engutronix.de/ |
next prev parent reply other threads:[~2013-09-19 12:49 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-11 8:18 [RFCv4] staging/iio/adc: change the MXS touchscreen driver implementation Juergen Beisert
2013-09-11 8:18 ` [PATCH 1/6] Staging/iio/adc/touchscreen/MXS: distinguish i.MX23's and i.MX28's LRADC Juergen Beisert
2013-09-11 8:18 ` [PATCH 2/6] Staging/iio/adc/touchscreen/MXS: separate i.MX28 specific register bits Juergen Beisert
2013-09-15 10:27 ` Jonathan Cameron
2013-09-11 8:18 ` [PATCH 3/6] Staging/iio/adc/touchscreen/MXS: simplify register access Juergen Beisert
2013-09-15 10:35 ` Jonathan Cameron
2013-09-16 8:17 ` Jürgen Beisert
2013-09-16 18:39 ` Jonathan Cameron
2013-09-16 14:15 ` Marek Vasut
2013-09-11 8:18 ` [PATCH 4/6] Staging/iio/adc/touchscreen/MXS: add i.MX23 support to the LRADC touchscreen driver Juergen Beisert
2013-09-15 10:50 ` Jonathan Cameron
2013-09-16 8:14 ` Jürgen Beisert
2013-09-16 14:19 ` Marek Vasut
2013-09-11 8:18 ` [PATCH 5/6] Staging/iio/adc/touchscreen/MXS: add interrupt driven touch detection Juergen Beisert
2013-09-15 10:56 ` Jonathan Cameron
2013-09-15 16:10 ` Jonathan Cameron
2013-09-16 8:38 ` Jürgen Beisert
2013-09-16 8:10 ` Jürgen Beisert
2013-09-16 9:37 ` Jürgen Beisert
2013-09-16 14:23 ` Marek Vasut
2013-09-16 14:34 ` Jürgen Beisert
2013-09-16 15:10 ` Marek Vasut
2013-09-16 15:30 ` Jonathan Cameron
2013-09-19 12:49 ` Jürgen Beisert [this message]
2013-09-19 16:12 ` Jonathan Cameron
2013-09-16 15:28 ` Dmitry Torokhov
2013-09-17 7:33 ` Jürgen Beisert
2013-09-11 8:18 ` [PATCH 6/6] Staging/iio/adc/touchscreen/MXS: Remove old touchscreen detection implementation Juergen Beisert
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