From: Sicelo <absicsz@gmail.com>
To: linux-iio@vger.kernel.org
Cc: maemo-leste@lists.dyne.org,
Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>,
linux-input@vger.kernel.org
Subject: supporting binary (near-far) proximity sensors over gpio
Date: Fri, 17 Nov 2023 20:21:59 +0200 [thread overview]
Message-ID: <ZVevR_ajeB1jfDS9@tp440p.steeds.sam> (raw)
Hi
Some phones have 1-bit proximity sensors, which simply toggle a GPIO
line to indicate that an object is near or far. Thresholds are set at
hardware level. One such sensor is OSRAM SFH 7741 [1], which is used on
the Nokia N900.
It is currently exported over evdev, emitting the SW_FRONT_PROXIMITY key
code [2].
So the question is: should a new, general purpose iio-gpio driver be
written, that would switch such a proximity sensor to the iio framework?
Or evdev is really the best place to support it?
There are a couple of people who are willing to write such an iio
driver, if iio is the way to go.
Regards,
Sicelo
[1] https://media.digikey.com/pdf/Data%20Sheets/Osram%20PDFs/SFH_7741.pdf
[2] https://elixir.bootlin.com/linux/v6.6.1/source/arch/arm/boot/dts/ti/omap/omap3-n900.dts#L111
next reply other threads:[~2023-11-17 18:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-17 18:21 Sicelo [this message]
2023-11-19 0:09 ` supporting binary (near-far) proximity sensors over gpio David Lechner
2023-11-20 17:31 ` Jonathan Cameron
2023-11-20 20:23 ` Sicelo
2023-11-26 4:33 ` Jeff LaBundy
2023-11-26 10:59 ` Philipp Jungkamp
2023-12-04 10:09 ` Jonathan Cameron
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