From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Stefan Popa <stefan.popa@analog.com>
Cc: linux-iio@vger.kernel.org, jic23@kernel.org, lars@metafoo.de,
Michael.Hennerich@analog.com, robh@kernel.org,
krzk+dt@kernel.org, conor+dt@kernel.org, andy@kernel.org,
dlechner@baylibre.com, nuno.sa@analog.com,
siratul.islam@linux.dev, u.kleine-koenig@baylibre.com,
linux@roeck-us.net, joshua.crofts1@gmail.com,
ciprian.hegbeli@analog.com, krzysztof.kozlowski@oss.qualcomm.com,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v9 2/2] iio: adc: add MAX40080 current-sense amplifier driver
Date: Mon, 31 Aug 2026 17:05:15 +0300 [thread overview]
Message-ID: <apWKGyFYmmJLe-Wx@ashevche-desk.local> (raw)
In-Reply-To: <20260831134334.196359-3-stefan.popa@analog.com>
On Mon, Aug 31, 2026 at 04:43:34PM +0300, Stefan Popa wrote:
> The MAX40080 is a bidirectional current-sense amplifier with an
> integrated 12-bit ADC and an I2C/SMBus interface. It measures the
> voltage across an external shunt resistor and the input bus voltage,
> storing the results in an internal FIFO.
>
> Add a direct-mode IIO driver exposing the current and voltage channels
> with raw, scale and hardware-gain attributes, a configurable
> oversampling (digital averaging) ratio, and PEC-protected register
> access. The current scale is derived from the shunt resistor value
> described in the device tree.
>
> The driver operates in single-measurement mode: each raw read triggers
> an on-demand conversion via SMBus Quick Command and returns a matched
> current/voltage pair. This avoids the latency and complexity of the
> continuous FIFO mode while ensuring each read reflects the current
> state. The two selectable current-sense ranges are exposed through
> scale/scale_available.
>
> Continuous FIFO buffering, threshold events and the alert interrupt are
> intentionally left out of this initial submission and may be added
> later.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
--
With Best Regards,
Andy Shevchenko
prev parent reply other threads:[~2026-08-31 14:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-31 13:43 [PATCH v9 0/2] iio: adc: add MAX40080 current-sense amplifier driver Stefan Popa
2026-08-31 13:43 ` [PATCH v9 1/2] dt-bindings: iio: adc: add adi,max40080 Stefan Popa
2026-08-31 13:43 ` [PATCH v9 2/2] iio: adc: add MAX40080 current-sense amplifier driver Stefan Popa
2026-08-31 14:05 ` Andy Shevchenko [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=apWKGyFYmmJLe-Wx@ashevche-desk.local \
--to=andriy.shevchenko@intel.com \
--cc=Michael.Hennerich@analog.com \
--cc=andy@kernel.org \
--cc=ciprian.hegbeli@analog.com \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=dlechner@baylibre.com \
--cc=jic23@kernel.org \
--cc=joshua.crofts1@gmail.com \
--cc=krzk+dt@kernel.org \
--cc=krzysztof.kozlowski@oss.qualcomm.com \
--cc=lars@metafoo.de \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@roeck-us.net \
--cc=nuno.sa@analog.com \
--cc=robh@kernel.org \
--cc=siratul.islam@linux.dev \
--cc=stefan.popa@analog.com \
--cc=u.kleine-koenig@baylibre.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox