linux-kernel - [PATCH 0/2] Documentation: gpio: clarify that line values are logical

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Message-Id: <20240610092157.9147-1-warthog618@gmail.com>
Date: Mon, 10 Jun 2024 17:21:55 +0800
From: Kent Gibson <warthog618@...il.com>
To: linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	linux-doc@...r.kernel.org,
	brgl@...ev.pl,
	corbet@....net,
	drankinatty@...il.com
Cc: Kent Gibson <warthog618@...il.com>
Subject: [PATCH 0/2] Documentation: gpio: clarify that line values are logical

The line values passed by the GPIO uAPI are logical values, and the edges
returned are based on changes to logical line values.  While the
documentation consistently uses active/inactive terminology to identify
the values as logical, this is never explicitly spelt out.
This series clarifies those points, with paricular emphasis on the
effect the active low flag has on values and edge polarity.

Patch 1 provides clarification for ioctls passing line values.

Patch 2 provides clarification for functions returning edge events.

Cheers,
Kent.

Kent Gibson (2):
  Documentation: gpio: Clarify effect of active low flag on line values
  Documentation: gpio: Clarify effect of active low flag on line edges

 .../gpio/gpio-handle-get-line-values-ioctl.rst             | 7 +++++++
 .../gpio/gpio-handle-set-line-values-ioctl.rst             | 7 +++++++
 .../userspace-api/gpio/gpio-lineevent-data-read.rst        | 5 +++++
 .../userspace-api/gpio/gpio-v2-line-event-read.rst         | 5 +++++
 .../userspace-api/gpio/gpio-v2-line-get-values-ioctl.rst   | 7 +++++++
 .../userspace-api/gpio/gpio-v2-line-set-values-ioctl.rst   | 7 +++++++
 6 files changed, 38 insertions(+)

--
2.39.2