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power: supply: bq24190_charger: Add power_supply_battery_info support 

Set pre-charge and charge-term current, obtained from power_supply_battery_info.
Add sysfs attributes precharge_current & charge_term_current.

Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This commit is contained in:
Liam Breck 2017-08-28 14:23:49 -07:00 committed by Sebastian Reichel
parent 8412a5bea7
commit 14e1a131b5
1 changed files with 87 additions and 0 deletions
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87
drivers/power/supply/bq24190_charger.c
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@ -59,9 +59,13 @@
#define BQ24190_REG_PCTCC_IPRECHG_MASK (BIT(7) | BIT(6) | BIT(5) | \
BIT(4))
#define BQ24190_REG_PCTCC_IPRECHG_SHIFT 4
#define BQ24190_REG_PCTCC_IPRECHG_MIN 128
#define BQ24190_REG_PCTCC_IPRECHG_MAX 2048
#define BQ24190_REG_PCTCC_ITERM_MASK (BIT(3) | BIT(2) | BIT(1) | \
BIT(0))
#define BQ24190_REG_PCTCC_ITERM_SHIFT 0
#define BQ24190_REG_PCTCC_ITERM_MIN 128
#define BQ24190_REG_PCTCC_ITERM_MAX 2048
#define BQ24190_REG_CVC 0x04 /* Charge Voltage Control */
#define BQ24190_REG_CVC_VREG_MASK (BIT(7) | BIT(6) | BIT(5) | \
@ -162,6 +166,8 @@ struct bq24190_dev_info {
bool initialized;
bool irq_event;
u16 sys_min;
u16 iprechg;
u16 iterm;
struct mutex f_reg_lock;
u8 f_reg;
u8 ss_reg;
@ -543,6 +549,26 @@ static int bq24190_set_config(struct bq24190_dev_info *bdi)
return ret;
}
if (bdi->iprechg) {
v = bdi->iprechg / 128 - 1; // manual section 9.5.1.4, table 11
ret = bq24190_write_mask(bdi, BQ24190_REG_PCTCC,
BQ24190_REG_PCTCC_IPRECHG_MASK,
BQ24190_REG_PCTCC_IPRECHG_SHIFT,
v);
if (ret < 0)
return ret;
}
if (bdi->iterm) {
v = bdi->iterm / 128 - 1; // manual section 9.5.1.4, table 11
ret = bq24190_write_mask(bdi, BQ24190_REG_PCTCC,
BQ24190_REG_PCTCC_ITERM_MASK,
BQ24190_REG_PCTCC_ITERM_SHIFT,
v);
if (ret < 0)
return ret;
}
return 0;
}
@ -791,6 +817,38 @@ static int bq24190_charger_set_temp_alert_max(struct bq24190_dev_info *bdi,
return bq24190_battery_set_temp_alert_max(bdi, val);
}
static int bq24190_charger_get_precharge(struct bq24190_dev_info *bdi,
union power_supply_propval *val)
{
u8 v;
int ret;
ret = bq24190_read_mask(bdi, BQ24190_REG_PCTCC,
BQ24190_REG_PCTCC_IPRECHG_MASK,
BQ24190_REG_PCTCC_IPRECHG_SHIFT, &v);
if (ret < 0)
return ret;
val->intval = ++v * 128 * 1000;
return 0;
}
static int bq24190_charger_get_charge_term(struct bq24190_dev_info *bdi,
union power_supply_propval *val)
{
u8 v;
int ret;
ret = bq24190_read_mask(bdi, BQ24190_REG_PCTCC,
BQ24190_REG_PCTCC_ITERM_MASK,
BQ24190_REG_PCTCC_ITERM_SHIFT, &v);
if (ret < 0)
return ret;
val->intval = ++v * 128 * 1000;
return 0;
}
static int bq24190_charger_get_current(struct bq24190_dev_info *bdi,
union power_supply_propval *val)
{
@ -938,6 +996,12 @@ static int bq24190_charger_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
ret = bq24190_charger_get_temp_alert_max(bdi, val);
break;
case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
ret = bq24190_charger_get_precharge(bdi, val);
break;
case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
ret = bq24190_charger_get_charge_term(bdi, val);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = bq24190_charger_get_current(bdi, val);
break;
@ -1044,6 +1108,8 @@ static enum power_supply_property bq24190_charger_properties[] = {
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
@ -1523,6 +1589,7 @@ static int bq24190_hw_init(struct bq24190_dev_info *bdi)
static int bq24190_get_config(struct bq24190_dev_info *bdi)
{
const char * const s = "ti,system-minimum-microvolt";
struct power_supply_battery_info info = {};
int v;
if (device_property_read_u32(bdi->dev, s, &v) == 0) {
@ -1534,6 +1601,25 @@ static int bq24190_get_config(struct bq24190_dev_info *bdi)
dev_warn(bdi->dev, "invalid value for %s: %u\n", s, v);
}
if (bdi->dev->of_node &&
!power_supply_get_battery_info(bdi->charger, &info)) {
v = info.precharge_current_ua / 1000;
if (v >= BQ24190_REG_PCTCC_IPRECHG_MIN
&& v <= BQ24190_REG_PCTCC_IPRECHG_MAX)
bdi->iprechg = v;
else
dev_warn(bdi->dev, "invalid value for battery:precharge-current-microamp: %d\n",
v);
v = info.charge_term_current_ua / 1000;
if (v >= BQ24190_REG_PCTCC_ITERM_MIN
&& v <= BQ24190_REG_PCTCC_ITERM_MAX)
bdi->iterm = v;
else
dev_warn(bdi->dev, "invalid value for battery:charge-term-current-microamp: %d\n",
v);
}
return 0;
}
@ -1601,6 +1687,7 @@ static int bq24190_probe(struct i2c_client *client,
}
charger_cfg.drv_data = bdi;
charger_cfg.of_node = dev->of_node;
charger_cfg.supplied_to = bq24190_charger_supplied_to;
charger_cfg.num_supplicants = ARRAY_SIZE(bq24190_charger_supplied_to),
bdi->charger = power_supply_register(dev, &bq24190_charger_desc,