linux-kernel - Re: [PATCH v3 1/5] power: supply: max17040: Add IRQ handler for low SOC alert

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Message-ID: <CAJKOXPc1v8FqegAnYvrmU9Mne7isMovD6o-FSs2To7EqFc8XXQ@mail.gmail.com>
Date:   Wed, 29 May 2019 16:26:35 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Matheus Castello <matheus@...tello.eng.br>
Cc:     sre@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Bartłomiej Żołnierkiewicz 
        <b.zolnierkie@...sung.com>, lee.jones@...aro.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/5] power: supply: max17040: Add IRQ handler for low
 SOC alert

On Mon, 27 May 2019 at 04:45, Matheus Castello <matheus@...tello.eng.br> wrote:
>
> According datasheet max17040 has a pin for alert host for low SOC.
> This pin can be used as external interrupt, so we need to check for
> interrupts assigned for device and handle it.
>
> In handler we are checking and storing fuel gauge registers values
> and send an uevent to notificate user space, so user space can decide
> save work or turn off since the alert demonstrate that the battery may
> no have the power to keep the system turned on for much longer.
>
> Signed-off-by: Matheus Castello <matheus@...tello.eng.br>
> ---
>  drivers/power/supply/max17040_battery.c | 65 +++++++++++++++++++++++--
>  1 file changed, 60 insertions(+), 5 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof