linux-kernel - [PATCH 0/4] iio: adc: ad4695: implement calibration support

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Message-Id: <20240820-ad4695-gain-offset-v1-0-c8f6e3b47551@baylibre.com>
Date: Tue, 20 Aug 2024 10:58:34 -0500
From: David Lechner <dlechner@...libre.com>
To: Jonathan Cameron <jic23@...nel.org>
Cc: Michael Hennerich <Michael.Hennerich@...log.com>, 
 Nuno Sá <nuno.sa@...log.com>, 
 Jonathan Corbet <corbet@....net>, linux-iio@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, 
 David Lechner <dlechner@...libre.com>
Subject: [PATCH 0/4] iio: adc: ad4695: implement calibration support

This series adds calibration support to the ad4695 driver.

This has the same "odd" gain and offset registers that are being used
for calibration as discussed recently in the ad4030 series [1]. So if
the ranges in the *_available attributes seem a bit big for calibration,
that is why. The official datasheet explanation for this feature is,
"The AD4695/AD4696 include offset and gain error correction
functionality to correct for first-order nonidealities in a full
[analog front end] signal chain."

[1]: https://lore.kernel.org/linux-iio/20240814193814.78fe45cc@jic23-huawei/

---
David Lechner (4):
      iio: adc: ad4695: add 2nd regmap for 16-bit registers
      iio: adc: ad4695: implement calibration support
      doc: iio: ad4695: update for calibration support
      iio: ABI: document ad4695 new attributes

 Documentation/ABI/testing/sysfs-bus-iio |   3 +
 Documentation/iio/ad4695.rst            |   7 +-
 drivers/iio/adc/ad4695.c                | 242 +++++++++++++++++++++++++++++---
 3 files changed, 234 insertions(+), 18 deletions(-)
---
base-commit: 0f718e10da81446df0909c9939dff2b77e3b4e95
change-id: 20240819-ad4695-gain-offset-c748d7addf27

Best regards,
-- 
David Lechner <dlechner@...libre.com>