linux-kernel - Re: [PATCH v2] hwmon: Add thermal sensor driver for Surface Aggregator Module

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Message-ID: <6027d9db-b1a8-4eb0-a0b7-451f1524834c@kernel.org>
Date: Sat, 10 Aug 2024 01:35:20 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Maximilian Luz <luzmaximilian@...il.com>,
 Guenter Roeck <linux@...ck-us.net>
Cc: Jean Delvare <jdelvare@...e.com>, Hans de Goede <hdegoede@...hat.com>,
 Ivor Wanders <ivor@...nders.net>, linux-kernel@...r.kernel.org,
 linux-hwmon@...r.kernel.org
Subject: Re: [PATCH v2] hwmon: Add thermal sensor driver for Surface
 Aggregator Module

On 5.08.2024 1:08 AM, Maximilian Luz wrote:
> Some of the newer Microsoft Surface devices (such as the Surface Book
> 3 and Pro 9) have thermal sensors connected via the Surface Aggregator
> Module (the embedded controller on those devices). Add a basic driver
> to read out the temperature values of those sensors.
> 
> The EC can have up to 16 thermal sensors connected via a single
> sub-device, each providing temperature readings and a label string.
> 
> Link: https://github.com/linux-surface/surface-aggregator-module/issues/59
> Reviewed-by: Hans de Goede <hdegoede@...hat.com>
> Co-developed-by: Ivor Wanders <ivor@...nders.net>
> Signed-off-by: Ivor Wanders <ivor@...nders.net>
> Signed-off-by: Maximilian Luz <luzmaximilian@...il.com>
> 
> ---

Gave it a shot on SL7, some names are repeated and one sensor is
totally busted

/sys/class/hwmon/hwmon66/name:surface_thermal
/sys/class/hwmon/hwmon66/temp10_input:32200
/sys/class/hwmon/hwmon66/temp10_label:I_RTS2
/sys/class/hwmon/hwmon66/temp11_input:31600
/sys/class/hwmon/hwmon66/temp11_label:I_RTS3
/sys/class/hwmon/hwmon66/temp12_input:38000
/sys/class/hwmon/hwmon66/temp12_label:I_RTS4
/sys/class/hwmon/hwmon66/temp1_input:43900
/sys/class/hwmon/hwmon66/temp1_label:I_RTS1
/sys/class/hwmon/hwmon66/temp2_input:44000
/sys/class/hwmon/hwmon66/temp2_label:I_RTS2
/sys/class/hwmon/hwmon66/temp3_input:47300
/sys/class/hwmon/hwmon66/temp3_label:I_RTS3
/sys/class/hwmon/hwmon66/temp4_input:-273100
/sys/class/hwmon/hwmon66/temp4_label:I_RTS4
/sys/class/hwmon/hwmon66/temp5_input:31300
/sys/class/hwmon/hwmon66/temp5_label:I_RTS5
/sys/class/hwmon/hwmon66/temp9_input:37100
/sys/class/hwmon/hwmon66/temp9_label:I_RTS1

Konrad