Add support for reporting the SBS battery's condition flag
to userspace using the new "Calibration required" health status.
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
---
drivers/power/supply/sbs-battery.c | 27 ++++++++++++++++++++++++---
1 file changed, 24 insertions(+), 3 deletions(-)
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index 4fa553d61db2..2a2b926ad75c 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -23,6 +23,7 @@
enum {
REG_MANUFACTURER_DATA,
+ REG_BATTERY_MODE,
REG_TEMPERATURE,
REG_VOLTAGE,
REG_CURRENT_NOW,
@@ -94,6 +95,8 @@ static const struct chip_data {
} sbs_data[] = {
[REG_MANUFACTURER_DATA] =
SBS_DATA(POWER_SUPPLY_PROP_PRESENT, 0x00, 0, 65535),
+ [REG_BATTERY_MODE] =
+ SBS_DATA(-1, 0x03, 0, 65535),
[REG_TEMPERATURE] =
SBS_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535),
[REG_VOLTAGE] =
@@ -366,6 +369,17 @@ static int sbs_status_correct(struct i2c_client *client, int *intval)
return 0;
}
+static bool sbs_bat_needs_calibration(struct i2c_client *client)
+{
+ int ret;
+
+ ret = sbs_read_word_data(client, sbs_data[REG_BATTERY_MODE].addr);
+ if (ret < 0)
+ return false;
+
+ return !!(ret & BIT(7));
+}
+
static int sbs_get_battery_presence_and_health(
struct i2c_client *client, enum power_supply_property psp,
union power_supply_propval *val)
@@ -385,9 +399,14 @@ static int sbs_get_battery_presence_and_health(
if (psp == POWER_SUPPLY_PROP_PRESENT)
val->intval = 1; /* battery present */
- else /* POWER_SUPPLY_PROP_HEALTH */
- /* SBS spec doesn't have a general health command. */
- val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
+ else { /* POWER_SUPPLY_PROP_HEALTH */
+ if (sbs_bat_needs_calibration(client)) {
+ val->intval = POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED;
+ } else {
+ /* SBS spec doesn't have a general health command. */
+ val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
+ }
+ }
return 0;
}
@@ -441,6 +460,8 @@ static int sbs_get_ti_battery_presence_and_health(
val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
else if (ret == 0x0C)
val->intval = POWER_SUPPLY_HEALTH_DEAD;
+ else if (sbs_bat_needs_calibration(client))
+ val->intval = POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED;
else
val->intval = POWER_SUPPLY_HEALTH_GOOD;
}
--
2.26.2
