mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Luca Weiss <luca.weiss@fairphone.com>
Cc: "Jonathan Cameron" <jic23@kernel.org>,
	"David Lechner" <dlechner@baylibre.com>,
	"Nuno Sá" <nuno.sa@analog.com>,
	"Andy Shevchenko" <andy@kernel.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	"Zhang Rui" <rui.zhang@intel.com>,
	"Lukasz Luba" <lukasz.luba@arm.com>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Laxman Dewangan" <ldewangan@nvidia.com>,
	"Bjorn Andersson" <andersson@kernel.org>,
	"Konrad Dybcio" <konradybcio@kernel.org>,
	"Hans de Goede" <hansg@kernel.org>,
	"Jens Reidel" <adrian@mainlining.org>,
	"Casey Connolly" <casey.connolly@linaro.org>,
	"Val Packett" <val@packett.cool>,
	"Daniel Lezcano" <daniel.lezcano@kernel.org>,
	~postmarketos/upstreaming@lists.sr.ht,
	phone-devel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v3 1/5] iio: adc: qcom-spmi-adc5: Add battery thermal channels
Date: Fri, 13 Nov 2026 18:24:14 +0200	[thread overview]
Message-ID: <avc5rnvIAEmZbyE1@ashevche-desk.local> (raw)
In-Reply-To: <20261113-bat-temp-adc-v3-1-743979a8fd90@fairphone.com>

On Fri, Nov 13, 2026 at 04:56:42PM +0100, Luca Weiss wrote:
> Add the BAT_THERM channels with millivolt as output, which can then be
> used along with information regarding the NTC in the battery, to get the
> actual battery temperature.
> 
> A static lookup table in the ADC driver won't work since different
> devices have different Ohm and Beta values in their battery NTCs, for
> example a NTC can be 10kOhm & B=3435K.

...

> +static int qcom_vadc_scale_hw_calib_therm_volt(

This is broken indentation. Was `clang-format` being used to achieve that?

> +				const struct u32_fract *prescale,
> +				const struct adc5_data *data,
> +				u16 adc_code, int *result_uv)

result_uV

> +{
> +	*result_uv = qcom_vadc_scale_code_voltage_factor(adc_code,
> +				prescale, data, 1000);

1000 is odd, can you use something from units.h or combination of those
to show what this multiplier is for?

> +	return 0;
> +}

-- 
With Best Regards,
Andy Shevchenko



  reply	other threads:[~2026-11-13 16:24 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-13 15:56 [PATCH v3 0/5] Battery temperature ADC plumbing on Qualcomm platforms Luca Weiss
2026-11-13 15:56 ` [PATCH v3 1/5] iio: adc: qcom-spmi-adc5: Add battery thermal channels Luca Weiss
2026-11-13 16:24   ` Andy Shevchenko [this message]
2026-11-13 15:56 ` [PATCH v3 2/5] dt-bindings: thermal: generic-adc: Document #io-channel-cells Luca Weiss
2026-11-13 15:56 ` [PATCH v3 3/5] thermal/drivers/generic-adc: Allow probe without TZ registration Luca Weiss
2026-11-13 16:28   ` Andy Shevchenko
2026-11-13 15:56 ` [PATCH v3 4/5] arm64: dts: qcom: pm7250b: Define battery temperature ADC channels Luca Weiss
2026-11-13 15:56 ` [PATCH v3 5/5] arm64: dts: qcom: sm7225-fairphone-fp4: Add battery temperature node Luca Weiss

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=avc5rnvIAEmZbyE1@ashevche-desk.local \
    --to=andriy.shevchenko@intel.com \
    --cc=adrian@mainlining.org \
    --cc=andersson@kernel.org \
    --cc=andy@kernel.org \
    --cc=casey.connolly@linaro.org \
    --cc=conor+dt@kernel.org \
    --cc=daniel.lezcano@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=dlechner@baylibre.com \
    --cc=hansg@kernel.org \
    --cc=jic23@kernel.org \
    --cc=konradybcio@kernel.org \
    --cc=krzk+dt@kernel.org \
    --cc=ldewangan@nvidia.com \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-iio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=luca.weiss@fairphone.com \
    --cc=lukasz.luba@arm.com \
    --cc=nuno.sa@analog.com \
    --cc=phone-devel@vger.kernel.org \
    --cc=rafael@kernel.org \
    --cc=robh@kernel.org \
    --cc=rui.zhang@intel.com \
    --cc=val@packett.cool \
    --cc=~postmarketos/upstreaming@lists.sr.ht \
    /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

all inboxes | Powered by JetHome®