Commit 7721c2fd authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Sebastian Reichel
Browse files

power: supply: sbs-battery: add MANUFACTURE_DATE support 



Expose the battery's manufacture date to userspace.

Reviewed-by: default avatarEmil Velikov <emil.velikov@collabora.com>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 787fdbcf

drivers/power/supply/sbs-battery.c

+43 −0
Original line number Diff line number Diff line
@@ -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__);