linux-kernel - [PATCH v3 0/9] w1: ds2438: adding support for calibration of current measurements

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Message-Id: <20210403044547.390226-1-sampaio.ime@gmail.com>
Date:   Sat,  3 Apr 2021 01:45:47 -0300
From:   Luiz Sampaio <sampaio.ime@...il.com>
To:     zbr@...emap.net
Cc:     corbet@....net, rikard.falkeborn@...il.com,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        Luiz Sampaio <sampaio.ime@...il.com>
Subject: [PATCH v3 0/9] w1: ds2438: adding support for calibration of current measurements

The following patches aim to make a user able to calibrate the current measurement of the DS2438. This chip uses a offset register in page1, which is added to the current register to give the user the current measurement. If this value is wrong, the user will get an offset current value, even if the current is zero, for instance. This patch gives support for reading the page1 registers (including the offset register) and for writing to the offset register. The DS2438 datasheet shows a calibration routine, and with this patch, the user can do this quickly by writing the correct value to the offset register. This patch was tested on real hardware using a power supply and an electronic load.
Please help to review this series of patches.

Best regards!
Sampaio
---
Changes in v3:
- I accidentally added a wrong line that would not compile. I'm sorry. Fixed it.

Changes in v2:
- Using git send-email to send the patches
- Adding documentation as requested
- Separating the coding style changes in different patches as requested

Luiz Sampaio (9):
  w1: ds2438: fixed a coding style issue
  w1: ds2438: fixed a coding style issue
  w1: ds2438: fixed a coding style issue
  w1: ds2438: fixed a coding style issue
  w1: ds2438: fixed a coding style issue
  w1: ds2438: fixed a coding style issue
  w1: ds2438: fixing bug that would always get page0
  w1: ds2438: adding support for reading page1
  w1: ds2438: support for writing to offset register

 Documentation/w1/slaves/w1_ds2438.rst |  19 +++-
 drivers/w1/slaves/w1_ds2438.c         | 122 ++++++++++++++++++++++----
 2 files changed, 124 insertions(+), 17 deletions(-)

-- 
2.30.1