From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matheus Castello Subject: [PATCH v3 5/5] power: supply: max17040: Send uevent in SOC and status change Date: Sun, 26 May 2019 23:22:58 -0300 Message-ID: <20190527022258.32748-6-matheus@castello.eng.br> References: <20190527022258.32748-1-matheus@castello.eng.br> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190527022258.32748-1-matheus@castello.eng.br> Sender: linux-kernel-owner@vger.kernel.org To: sre@kernel.org, krzk@kernel.org, robh+dt@kernel.org Cc: mark.rutland@arm.com, cw00.choi@samsung.com, b.zolnierkie@samsung.com, lee.jones@linaro.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Matheus Castello List-Id: devicetree@vger.kernel.org Notify core through power_supply_changed() in case of changes in state of charge and power supply status. This is useful for user-space to efficiently update current battery level. Signed-off-by: Matheus Castello --- drivers/power/supply/max17040_battery.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c index 61e6fcfea8a1..34278845cfe5 100644 --- a/drivers/power/supply/max17040_battery.c +++ b/drivers/power/supply/max17040_battery.c @@ -176,6 +176,9 @@ static void max17040_get_online(struct i2c_client *client) static void max17040_get_status(struct i2c_client *client) { struct max17040_chip *chip = i2c_get_clientdata(client); + int last_status; + + last_status = chip->status; if (!chip->pdata || !chip->pdata->charger_online || !chip->pdata->charger_enable) { @@ -194,6 +197,9 @@ static void max17040_get_status(struct i2c_client *client) if (chip->soc > MAX17040_BATTERY_FULL) chip->status = POWER_SUPPLY_STATUS_FULL; + + if (last_status != chip->status) + power_supply_changed(chip->battery); } static void max17040_get_of_data(struct max17040_chip *chip) @@ -217,10 +223,18 @@ static void max17040_check_changes(struct i2c_client *client) static void max17040_work(struct work_struct *work) { struct max17040_chip *chip; + int last_soc; chip = container_of(work, struct max17040_chip, work.work); + + /* store SOC for check change */ + last_soc = chip->soc; max17040_check_changes(chip->client); + /* check changes and send uevent */ + if (chip->soc >= 0 && last_soc != chip->soc) + power_supply_changed(chip->battery); + queue_delayed_work(system_power_efficient_wq, &chip->work, MAX17040_DELAY); } -- 2.20.1