linux-kernel - Re: [PATCH v3 2/3] power: supply: Add Acer Aspire 1 embedded controller driver

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Date: Fri, 23 Feb 2024 20:34:29 +0500
From: Nikita Travkin <nikita@...n.ru>
To: Sebastian Reichel <sebastian.reichel@...labora.com>
Cc: Hans de Goede <hdegoede@...hat.com>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley
 <conor+dt@...nel.org>, cros-qcom-dts-watchers@...omium.org, Andy Gross
 <agross@...nel.org>, Bjorn Andersson <andersson@...nel.org>, Konrad Dybcio
 <konrad.dybcio@...aro.org>, Rob Herring <robh@...nel.org>,
 linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v3 2/3] power: supply: Add Acer Aspire 1 embedded
 controller driver

Sebastian Reichel писал(а) 23.02.2024 20:04:
> Hi,
> 
> On Fri, Feb 23, 2024 at 07:32:17PM +0500, Nikita Travkin wrote:
>> >> + This driver provides battery and AC status support for the mentioned
>> >
>> > I did not see any AC status bits?
>>
>> I was referring to whatever ACPI spec calls "AC Adapter" but I guess
>> I should have used the word "charger" instead... Will reword this.
> 
> But you only register a power-supply device for the battery and not
> for the AC adapter/charger. When you write "and AC status support" I
> would have expected something similar to this (that's from ACPI AC
> adapter driver):
> 
> $ cat /sys/class/power_supply/AC/uevent
> POWER_SUPPLY_NAME=AC
> POWER_SUPPLY_TYPE=Mains
> POWER_SUPPLY_ONLINE=1
> 

Ah, I see... Yeah looking at it one more time, I mistakenly assumed the
acpi ac code uses the same data fields as the battery but seems like it
reads the single online flag from a different place. I don't think there
is really a point on implementing that field since we can still easily
track the battery charging/discharging status so I will probably omit it
for now. Will reword the help text to not mention charger/ac adapter.

Thanks for clarifying!
Nikita

> -- Sebastian