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authorMatheus Castello <matheus@castello.eng.br>2020-07-05 21:10:03 -0300
committerSebastian Reichel <sebastian.reichel@collabora.com>2020-07-28 02:15:58 +0200
commit2f38dc4d9190cd97b8ceb88be5b835ee5feb44d1 (patch)
tree64275111227320e61d74bf0a27ee35ec2f9bcc1e
parentccf193dee1f0fff55b556928591f7818bac1b3b1 (diff)
power: supply: max17040: Add POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN
Adds the property POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN to export the chip->low_soc_alert and add the property as writeable, implementing max17040_prop_writeable and max17040_set_property, so with that the user space can readjust the alerts. Signed-off-by: Matheus Castello <matheus@castello.eng.br> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
-rw-r--r--drivers/power/supply/max17040_battery.c51
1 files changed, 46 insertions, 5 deletions
diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
index 48aa44665e2f..6cb31b9a958d 100644
--- a/drivers/power/supply/max17040_battery.c
+++ b/drivers/power/supply/max17040_battery.c
@@ -69,6 +69,9 @@ static int max17040_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = chip->soc;
break;
+ case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
+ val->intval = chip->low_soc_alert;
+ break;
default:
return -EINVAL;
}
@@ -256,19 +259,57 @@ static int max17040_enable_alert_irq(struct max17040_chip *chip)
return ret;
}
+static int max17040_prop_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int max17040_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct max17040_chip *chip = power_supply_get_drvdata(psy);
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
+ /* alert threshold can be programmed from 1% up to 32% */
+ if ((val->intval < 1) || (val->intval > 32)) {
+ ret = -EINVAL;
+ break;
+ }
+ ret = max17040_set_low_soc_alert(chip->client, val->intval);
+ chip->low_soc_alert = val->intval;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
static enum power_supply_property max17040_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN,
};
static const struct power_supply_desc max17040_battery_desc = {
- .name = "battery",
- .type = POWER_SUPPLY_TYPE_BATTERY,
- .get_property = max17040_get_property,
- .properties = max17040_battery_props,
- .num_properties = ARRAY_SIZE(max17040_battery_props),
+ .name = "battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .get_property = max17040_get_property,
+ .set_property = max17040_set_property,
+ .property_is_writeable = max17040_prop_writeable,
+ .properties = max17040_battery_props,
+ .num_properties = ARRAY_SIZE(max17040_battery_props),
};
static int max17040_probe(struct i2c_client *client,