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 v4 0/2] add support for GPIO based counter
Date: Tue, 26 Jan 2021 14:12:37 +0100 [thread overview]
Message-ID: <20210126131239.8335-1-o.rempel@pengutronix.de> (raw)
changes v4:
- use IRQ_NOAUTOEN to not enable IRQ by default
- rename gpio_ from name pattern and make this driver work any IRQ
source.
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 pulse-counter binding
counter: add IRQ or GPIO based pulse counter
.../bindings/counter/pulse-counter.yaml | 52 ++++
drivers/counter/Kconfig | 10 +
drivers/counter/Makefile | 1 +
drivers/counter/pulse-cnt.c | 235 ++++++++++++++++++
4 files changed, 298 insertions(+)
create mode 100644 Documentation/devicetree/bindings/counter/pulse-counter.yaml
create mode 100644 drivers/counter/pulse-cnt.c
--
2.30.0
next reply other threads:[~2021-01-26 13:14 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-26 13:12 Oleksij Rempel [this message]
2021-01-26 13:12 ` [PATCH v4 1/2] dt-bindings: counter: add pulse-counter binding Oleksij Rempel
2021-01-28 8:17 ` Linus Walleij
2021-01-28 13:39 ` Oleksij Rempel
2021-02-05 23:34 ` Rob Herring
2021-01-26 13:12 ` [PATCH v4 2/2] counter: add IRQ or GPIO based pulse counter Oleksij Rempel
2021-01-27 8:52 ` kernel test robot
2021-01-27 8:52 ` kernel test robot
2021-01-28 8:24 ` Linus Walleij
2021-01-28 13:58 ` Oleksij Rempel
2021-01-26 13:18 ` [PATCH v4 0/2] add support for GPIO based counter Marc Kleine-Budde
2021-01-27 6:44 ` Oleksij Rempel
2021-01-27 7:10 ` Marc Kleine-Budde
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