linux-kernel - [PATCH v1 0/2] add support for GPIO based counter

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Date:   Thu, 21 Jan 2021 15:27:14 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Rob Herring <robh+dt@...nel.org>,
        William Breathitt Gray <vilhelm.gray@...il.com>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        David Jander <david@...tonic.nl>,
        Robin van der Gracht <robin@...tonic.nl>,
        linux-iio@...r.kernel.org
Subject: [PATCH v1 0/2] add support for GPIO based counter 

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              | 245 ++++++++++++++++++
 4 files changed, 294 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/counter/gpio-pulse-counter.yaml
 create mode 100644 drivers/counter/gpio-pulse-cnt.c

-- 
2.30.0