This reads the battery chemistry from the battery chip instead
of incorrectly hardcoding the type to be Li-Ion.
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
---
drivers/power/supply/sbs-battery.c | 43 ++++++++++++++++++++++++++++--
1 file changed, 41 insertions(+), 2 deletions(-)
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index 611a11385496..b697a42d9ccf 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -43,6 +43,7 @@ enum {
REG_DESIGN_CAPACITY_CHARGE,
REG_DESIGN_VOLTAGE_MIN,
REG_DESIGN_VOLTAGE_MAX,
+ REG_CHEMISTRY,
REG_MANUFACTURER,
REG_MODEL_NAME,
};
@@ -133,7 +134,9 @@ static const struct chip_data {
[REG_MANUFACTURER] =
SBS_DATA(POWER_SUPPLY_PROP_MANUFACTURER, 0x20, 0, 65535),
[REG_MODEL_NAME] =
- SBS_DATA(POWER_SUPPLY_PROP_MODEL_NAME, 0x21, 0, 65535)
+ SBS_DATA(POWER_SUPPLY_PROP_MODEL_NAME, 0x21, 0, 65535),
+ [REG_CHEMISTRY] =
+ SBS_DATA(POWER_SUPPLY_PROP_TECHNOLOGY, 0x22, 0, 65535)
};
static enum power_supply_property sbs_properties[] = {
@@ -185,6 +188,7 @@ struct sbs_info {
static char model_name[I2C_SMBUS_BLOCK_MAX + 1];
static char manufacturer[I2C_SMBUS_BLOCK_MAX + 1];
+static char chemistry[I2C_SMBUS_BLOCK_MAX + 1];
static bool force_load;
static int sbs_update_presence(struct sbs_info *chip, bool is_present)
@@ -636,6 +640,38 @@ static int sbs_get_property_index(struct i2c_client *client,
return -EINVAL;
}
+static int sbs_get_chemistry(struct i2c_client *client,
+ union power_supply_propval *val)
+{
+ enum power_supply_property psp = POWER_SUPPLY_PROP_TECHNOLOGY;
+ int ret;
+
+ ret = sbs_get_property_index(client, psp);
+ if (ret < 0)
+ return ret;
+
+ ret = sbs_get_battery_string_property(client, ret, psp,
+ chemistry);
+ if (ret < 0)
+ return ret;
+
+ if (!strncasecmp(chemistry, "LION", 4))
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ else if (!strncasecmp(chemistry, "LiP", 3))
+ val->intval = POWER_SUPPLY_TECHNOLOGY_LIPO;
+ else if (!strncasecmp(chemistry, "NiCd", 4))
+ val->intval = POWER_SUPPLY_TECHNOLOGY_NiCd;
+ else if (!strncasecmp(chemistry, "NiMH", 4))
+ val->intval = POWER_SUPPLY_TECHNOLOGY_NiMH;
+ else
+ val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
+
+ if (val->intval == POWER_SUPPLY_TECHNOLOGY_UNKNOWN)
+ dev_warn(&client->dev, "Unknown chemistry: %s\n", chemistry);
+
+ return 0;
+}
+
static int sbs_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -673,7 +709,10 @@ static int sbs_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
- val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+ ret = sbs_get_chemistry(client, val);
+ if (ret < 0)
+ break;
+
goto done; /* don't trigger power_supply_changed()! */
case POWER_SUPPLY_PROP_ENERGY_NOW:
--
2.26.2
