[v1] rtc-rv8803: Implement timestamp trigger over event pins

[PATCH v1 0/7] rtc-rv8803: Implement timestamp trigger over event pins

Markus Burri posted 7 patches 1 year ago

Diff against v2 v3 v4
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There is a newer version of this series

.../devicetree/bindings/rtc/epson,rx8900.yaml |   2 +
drivers/rtc/rtc-rv8803.c                      | 778 +++++++++++++++++-
2 files changed, 778 insertions(+), 2 deletions(-)

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[PATCH v1 0/7] rtc-rv8803: Implement timestamp trigger over event pins

Posted by Markus Burri 1 year ago

The RV8901 RTC chip provides a function to store timestamp events.
There are three input pins (EVIN1-3) available for triggering.
The timestamp can be read to detect tamper alerts, for example.

This patch series extends the sysfs interface to enable, configure, and
read the timestamp events.

Currently the configuration is implemented in sysfs.
Maybe this could be moved into device-tree, since pull-resistor, edge and
timing is more hardware dependent.

The data-sheet can be found here:
https://download.epsondevice.com/td/pdf/brief/RX8901CE_en.pdf

This patch-queue applies to 'linux-6.13~rc6'

Markus Burri (7):
  dt-bindings: rtc: add new type for epson,rx8901
  rtc-rv8803: add new type for rv8901
  rtc-rv8803: add register definitions for rv8901 tamper detection
  rtc-rv8803: add tamper function to sysfs for rv8901
  rtc-rv8803: extend sysfs to trigger internal ts-event
  rtc-rv8803: make tamper function configurable via sysfs
  rtc-rv8803: extend sysfs to read ts-event and buffer status

 .../devicetree/bindings/rtc/epson,rx8900.yaml |   2 +
 drivers/rtc/rtc-rv8803.c                      | 778 +++++++++++++++++-
 2 files changed, 778 insertions(+), 2 deletions(-)

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2.39.5