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authorMatheus Castello <matheus@castello.eng.br>2019-12-05 12:44:10 -0300
committerSebastian Reichel <sre@kernel.org>2019-12-19 01:51:52 +0100
commita08990ea11dc3386cc972c817a121525f7bc7321 (patch)
treef9558b46af836030faf696b6e506b962c12aa076 /drivers/power
parentcccdd0ca1c0d985c3cf1dfe65a3b42387a6e3d22 (diff)
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power: supply: max17040: Send uevent in SOC and status change
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>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/supply/max17040_battery.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
index 2a2a1fd8d4eb..c1188e94cf54 100644
--- a/drivers/power/supply/max17040_battery.c
+++ b/drivers/power/supply/max17040_battery.c
@@ -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);
}