linux-kernel - [PATCH v2 00/12] iio: accel: adxl313: add power-save on activity/inactivity

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Message-Id: <20250520225007.10990-1-l.rubusch@gmail.com>
Date: Tue, 20 May 2025 22:49:55 +0000
From: Lothar Rubusch <l.rubusch@...il.com>
To: jic23@...nel.org,
	dlechner@...libre.com,
	nuno.sa@...log.com,
	andy@...nel.org,
	corbet@....net,
	lucas.p.stankus@...il.com,
	lars@...afoo.de,
	Michael.Hennerich@...log.com,
	l.rubusch@...il.com
Cc: linux-iio@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 00/12] iio: accel: adxl313: add power-save on activity/inactivity

The patch set covers the following topics:
- add debug register and regmap cache
- prepare iio channel scan_type and scan_index
- prepare interrupt handling
- implement fifo with watermark
- add activity/inactivity together with auto-sleep with link bit
- documentation

Similar situation and approach as for the ADXL345. AC/DC coupling might be
a pending option as it is quite the same as for ADXL345.

Since activity and inactivity here are implemented covering all axis, I
assumed x&y&z. Thus the driver uses a fake channel for activity/inactiviy.

Signed-off-by: Lothar Rubusch <l.rubusch@...il.com>
---
v1 -> v2:
- usage of units.h
- simplify approach for return values
---
Lothar Rubusch (12):
  iio: accel: adxl313: add debug register
  iio: accel: adxl313: introduce channel scan_index
  iio: accel: adxl313: configure scan type for buffer
  iio: accel: adxl313: make use of regmap cache
  iio: accel: adxl313: add function to enable measurement
  iio: accel: adxl313: prepare interrupt handling
  iio: accel: adxl313: add basic interrupt handling
  iio: accel: adxl313: add FIFO watermark
  iio: accel: adxl313: add activity sensing
  iio: accel: adxl313: add inactivity sensing
  iio: accel: adxl313: implement power-save on inactivity
  docs: iio: add ADXL313 accelerometer

 Documentation/iio/adxl313.rst    | 196 ++++++++++
 Documentation/iio/index.rst      |   1 +
 drivers/iio/accel/adxl313.h      |  35 +-
 drivers/iio/accel/adxl313_core.c | 625 ++++++++++++++++++++++++++++++-
 drivers/iio/accel/adxl313_i2c.c  |   6 +
 drivers/iio/accel/adxl313_spi.c  |   6 +
 6 files changed, 860 insertions(+), 9 deletions(-)
 create mode 100644 Documentation/iio/adxl313.rst

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2.39.5