power: supply: sbs-battery: Add alert callback

To simplify the sbs-manager code and notification of battery removal
use the i2c alert callback to notify the sbs-battery driver that an
event has occurred.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>

1 files changed, 13 insertions, 3 deletions

diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index 171c701a2d49..e3a114e60f1a 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -701,21 +701,30 @@ done:
         return 0;
 }
 
-static irqreturn_t sbs_irq(int irq, void *devid)
+static void sbs_supply_changed(struct sbs_info *chip)
 {
-        struct sbs_info *chip = devid;
         struct power_supply *battery = chip->power_supply;
         int ret;
 
         ret = gpiod_get_value_cansleep(chip->gpio_detect);
         if (ret < 0)
-                return ret;
+                return;
         chip->is_present = ret;
         power_supply_changed(battery);
+}
 
+static irqreturn_t sbs_irq(int irq, void *devid)
+{
+        sbs_supply_changed(devid);
         return IRQ_HANDLED;
 }
 
+static void sbs_alert(struct i2c_client *client, enum i2c_alert_protocol prot,
+        unsigned int data)
+{
+        sbs_supply_changed(i2c_get_clientdata(client));
+}
+
 static void sbs_external_power_changed(struct power_supply *psy)
 {
         struct sbs_info *chip = power_supply_get_drvdata(psy);
@@ -936,6 +945,7 @@ MODULE_DEVICE_TABLE(of, sbs_dt_ids);
 static struct i2c_driver sbs_battery_driver = {
         .probe          = sbs_probe,
         .remove         = sbs_remove,
+        .alert          = sbs_alert,
         .id_table       = sbs_id,
         .driver = {
                 .name   = "sbs-battery",