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power: supply: sbs-battery: add MANUFACTURE_DATE support 

Expose the battery's manufacture date to userspace.

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Sebastian Reichel 2020-05-13 20:56:08 +02:00 committed by Sebastian Reichel
parent 787fdbcf5b
commit 7721c2fd26
1 changed files with 43 additions and 0 deletions
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43
drivers/power/supply/sbs-battery.c
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@ -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__);