Expose the battery's manufacture date to userspace.
Signed-off-by: Sebastian Reichel <sebastian.reic...@collabora.com>
---
drivers/power/supply/sbs-battery.c | 43 ++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/drivers/power/supply/sbs-battery.c
b/drivers/power/supply/sbs-battery.c
index e6f61baa9bed..4fa553d61db2 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -58,6 +58,8 @@ enum {
#define SBS_VERSION_1_1 2
#define SBS_VERSION_1_1_WITH_PEC 3
+#define REG_ADDR_MANUFACTURE_DATE 0x1B
+
/* Battery Mode defines */
#define BATTERY_MODE_OFFSET 0x03
#define BATTERY_MODE_CAPACITY_MASK BIT(15)
@@ -171,6 +173,9 @@ static enum power_supply_property sbs_properties[] = {
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
+ POWER_SUPPLY_PROP_MANUFACTURE_YEAR,
+ POWER_SUPPLY_PROP_MANUFACTURE_MONTH,
+ POWER_SUPPLY_PROP_MANUFACTURE_DAY,
/* Properties of type `const char *' */
POWER_SUPPLY_PROP_MANUFACTURER,
POWER_SUPPLY_PROP_MODEL_NAME
@@ -682,6 +687,38 @@ static int sbs_get_chemistry(struct i2c_client *client,
return 0;
}
+static int sbs_get_battery_manufacture_date(struct i2c_client *client,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret;
+ u16 day, month, year;
+
+ ret = sbs_read_word_data(client, REG_ADDR_MANUFACTURE_DATE);
+ if (ret < 0)
+ return ret;
+
+ day = ret & GENMASK(4, 0);
+ month = (ret & GENMASK(8, 5)) >> 5;
+ year = ((ret & GENMASK(15, 9)) >> 9) + 1980;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_MANUFACTURE_YEAR:
+ val->intval = year;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURE_MONTH:
+ val->intval = month;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURE_DAY:
+ val->intval = day;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int sbs_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -790,6 +827,12 @@ static int sbs_get_property(struct power_supply *psy,
val->strval = manufacturer;
break;
+ case POWER_SUPPLY_PROP_MANUFACTURE_YEAR:
+ case POWER_SUPPLY_PROP_MANUFACTURE_MONTH:
+ case POWER_SUPPLY_PROP_MANUFACTURE_DAY:
+ ret = sbs_get_battery_manufacture_date(client, psp, val);
+ break;
+
default:
dev_err(&client->dev,
"%s: INVALID property\n", __func__);
--
2.26.2
