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Subject[PATCH v5 5/5] power: supply: max17040: Send uevent in SOC and status change
Date
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>
---
drivers/power/supply/max17040_battery.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
index c48a691cbd7b..d7405650cc38 100644
--- a/drivers/power/supply/max17040_battery.c
+++ b/drivers/power/supply/max17040_battery.c
@@ -209,10 +209,19 @@ 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);
}
--
2.24.0.rc2
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