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power: supply: max17040: Send uevent in SOC and status change

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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 <matheus@castello.eng.br>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Matheus Castello 2019-12-05 12:44:10 -03:00 committed by Sebastian Reichel
parent cccdd0ca1c
commit a08990ea11
1 changed files with 9 additions and 0 deletions
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9
drivers/power/supply/max17040_battery.c
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@ -207,10 +207,19 @@ static void max17040_check_changes(struct i2c_client *client)
static void max17040_work(struct work_struct *work)
{
struct max17040_chip *chip;
int last_soc, last_status;
chip = container_of(work, struct max17040_chip, work.work);
/* store SOC and status to check changes */
last_soc = chip->soc;
last_status = chip->status;
max17040_check_changes(chip->client);
/* check changes and send uevent */
if (last_soc != chip->soc || last_status != chip->status)
power_supply_changed(chip->battery);
queue_delayed_work(system_power_efficient_wq, &chip->work,
MAX17040_DELAY);
}