From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: Re: [PATCH 4/4] power: supply: max17040: Send uevent in SOC changes Date: Wed, 25 Jul 2018 12:52:03 +0200 Message-ID: References: <20180723040816.19455-1-matheus@castello.eng.br> <20180723040816.19455-5-matheus@castello.eng.br> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: In-Reply-To: <20180723040816.19455-5-matheus@castello.eng.br> Sender: linux-kernel-owner@vger.kernel.org To: Matheus Castello Cc: sre@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-pm@vger.kernel.org On 23 July 2018 at 06:08, Matheus Castello wrote: > Add check for changes in state of charge from delayed work, so > in case of changes we call power_supply_changed to send an uevent. > > power_supply_changed send an uevent for alert user space about > changes, is useful for example to user space apps made changes in > UI battery level or made other decisions. Hi, Too many "changes". How about: Notify core through power_supply_changed() in case of changes in state of charge. This is useful for user-space to efficiently update current battery level. Reviewed-by: Krzysztof Kozlowski Best regards, Krzysztof > Signed-off-by: Matheus Castello > --- > drivers/power/supply/max17040_battery.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c > index 3efa52d32b44..72915ac9e13b 100644 > --- a/drivers/power/supply/max17040_battery.c > +++ b/drivers/power/supply/max17040_battery.c > @@ -202,14 +202,22 @@ static void max17040_get_of_data(struct max17040_chip *chip) > static void max17040_work(struct work_struct *work) > { > struct max17040_chip *chip; > + u16 last_soc; > > chip = container_of(work, struct max17040_chip, work.work); > > + /* store SOC for check change */ > + last_soc = chip->soc; > + > max17040_get_vcell(chip->client); > max17040_get_soc(chip->client); > max17040_get_online(chip->client); > max17040_get_status(chip->client); > > + /* check changes and send uevent */ > + if (last_soc != chip->soc) > + power_supply_changed(chip->battery); > + > queue_delayed_work(system_power_efficient_wq, &chip->work, > MAX17040_DELAY); > } > -- > 2.13.3 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html