From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Rob Herring <robh+dt@kernel.org>,
William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Pengutronix Kernel Team <kernel@pengutronix.de>,
David Jander <david@protonic.nl>,
Robin van der Gracht <robin@protonic.nl>,
linux-iio@vger.kernel.org
Subject: [PATCH v2 0/2] add support for GPIO based counter
Date: Fri, 22 Jan 2021 12:24:32 +0100 [thread overview]
Message-ID: <20210122112434.27886-1-o.rempel@pengutronix.de> (raw)
changes v3:
- convert counter to atomic_t
changes v2:
- add commas
- avoid possible unhandled interrupts in the enable path
- do not use of_ specific gpio functions
Add support for GPIO based pulse counter. For now it can only count
pulses. With counter char device support, we will be able to attach
timestamps and measure actual pulse frequency.
Never the less, it is better to mainline this driver now (before chardev
patches go mainline), to provide developers additional use case for the counter
framework with chardev support.
Oleksij Rempel (2):
dt-bindings: counter: add gpio-pulse-counter binding
counter: add GPIO based pulse counters
.../bindings/counter/gpio-pulse-counter.yaml | 39 +++
drivers/counter/Kconfig | 9 +
drivers/counter/Makefile | 1 +
drivers/counter/gpio-pulse-cnt.c | 244 ++++++++++++++++++
4 files changed, 293 insertions(+)
create mode 100644 Documentation/devicetree/bindings/counter/gpio-pulse-counter.yaml
create mode 100644 drivers/counter/gpio-pulse-cnt.c
--
2.30.0
next reply other threads:[~2021-01-22 11:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 11:24 Oleksij Rempel [this message]
2021-01-22 11:24 ` [PATCH v3 1/2] dt-bindings: counter: add gpio-pulse-counter binding Oleksij Rempel
2021-01-24 14:34 ` Jonathan Cameron
2021-01-22 11:24 ` [PATCH v3 2/2] counter: add GPIO based pulse counters Oleksij Rempel
2021-01-22 11:50 ` Ahmad Fatoum
2021-01-24 14:47 ` Jonathan Cameron
2021-01-26 8:07 ` Oleksij Rempel
-- strict thread matches above, loose matches on Subject: below --
2021-01-22 9:33 [PATCH v2 0/2] add support for GPIO based counter Oleksij Rempel
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