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power: supply: bq24190_charger: Deprecate battery class and replicate its features in charger 

The driver was registering two classes, bq24190-battery & -charger.
Because the power supply framework cannot surface features from multiple
drivers in a single class, a fuel gauge driver would create a third class,
which some power management utilities cannot see.

Deprecate the -battery class for future removal and replicate its features
in -charger. Set /sys/class...-charger/online = pg_stat && !batfet_disable.
If device_property "omit-battery-class" is set, don't register -battery.

Cc: Tony Lindgren <tony@atomide.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
hifive-unleashed-5.1
Liam Breck 2017-04-16 16:06:26 -07:00 committed by Sebastian Reichel
parent 2848e039c5
commit 1eb2869b3c
1 changed files with 111 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

146
drivers/power/supply/bq24190_charger.c
View File

@ -662,22 +662,25 @@ static int bq24190_charger_get_health(struct bq24190_dev_info *bdi,
v = bdi->f_reg;
mutex_unlock(&bdi->f_reg_lock);
if (v & BQ24190_REG_F_BOOST_FAULT_MASK) {
/*
* This could be over-current or over-voltage but there's
* no way to tell which. Return 'OVERVOLTAGE' since there
* isn't an 'OVERCURRENT' value defined that we can return
* even if it was over-current.
*/
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
} else {
v &= BQ24190_REG_F_CHRG_FAULT_MASK;
v >>= BQ24190_REG_F_CHRG_FAULT_SHIFT;
switch (v) {
case 0x0: /* Normal */
health = POWER_SUPPLY_HEALTH_GOOD;
if (v & BQ24190_REG_F_NTC_FAULT_MASK) {
switch (v >> BQ24190_REG_F_NTC_FAULT_SHIFT & 0x7) {
case 0x1: /* TS1 Cold */
case 0x3: /* TS2 Cold */
case 0x5: /* Both Cold */
health = POWER_SUPPLY_HEALTH_COLD;
break;
case 0x2: /* TS1 Hot */
case 0x4: /* TS2 Hot */
case 0x6: /* Both Hot */
health = POWER_SUPPLY_HEALTH_OVERHEAT;
break;
default:
health = POWER_SUPPLY_HEALTH_UNKNOWN;
}
} else if (v & BQ24190_REG_F_BAT_FAULT_MASK) {
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
} else if (v & BQ24190_REG_F_CHRG_FAULT_MASK) {
switch (v >> BQ24190_REG_F_CHRG_FAULT_SHIFT & 0x3) {
case 0x1: /* Input Fault (VBUS OVP or VBAT<VBUS<3.8V) */
/*
* This could be over-voltage or under-voltage
@ -694,9 +697,19 @@ static int bq24190_charger_get_health(struct bq24190_dev_info *bdi,
case 0x3: /* Charge Safety Timer Expiration */
health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
break;
default:
health = POWER_SUPPLY_HEALTH_UNKNOWN;
default: /* prevent compiler warning */
health = -1;
}
} else if (v & BQ24190_REG_F_BOOST_FAULT_MASK) {
/*
* This could be over-current or over-voltage but there's
* no way to tell which. Return 'OVERVOLTAGE' since there
* isn't an 'OVERCURRENT' value defined that we can return
* even if it was over-current.
*/
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
} else {
health = POWER_SUPPLY_HEALTH_GOOD;
}
val->intval = health;
@ -707,19 +720,59 @@ static int bq24190_charger_get_health(struct bq24190_dev_info *bdi,
static int bq24190_charger_get_online(struct bq24190_dev_info *bdi,
union power_supply_propval *val)
{
u8 v;
u8 pg_stat, batfet_disable;
int ret;
ret = bq24190_read_mask(bdi, BQ24190_REG_SS,
BQ24190_REG_SS_PG_STAT_MASK,
BQ24190_REG_SS_PG_STAT_SHIFT, &v);
BQ24190_REG_SS_PG_STAT_SHIFT, &pg_stat);
if (ret < 0)
return ret;
val->intval = v;
ret = bq24190_read_mask(bdi, BQ24190_REG_MOC,
BQ24190_REG_MOC_BATFET_DISABLE_MASK,
BQ24190_REG_MOC_BATFET_DISABLE_SHIFT, &batfet_disable);
if (ret < 0)
return ret;
val->intval = pg_stat && !batfet_disable;
return 0;
}
static int bq24190_battery_set_online(struct bq24190_dev_info *bdi,
const union power_supply_propval *val);
static int bq24190_battery_get_status(struct bq24190_dev_info *bdi,
union power_supply_propval *val);
static int bq24190_battery_get_temp_alert_max(struct bq24190_dev_info *bdi,
union power_supply_propval *val);
static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi,
const union power_supply_propval *val);
static int bq24190_charger_set_online(struct bq24190_dev_info *bdi,
const union power_supply_propval *val)
{
return bq24190_battery_set_online(bdi, val);
}
static int bq24190_charger_get_status(struct bq24190_dev_info *bdi,
union power_supply_propval *val)
{
return bq24190_battery_get_status(bdi, val);
}
static int bq24190_charger_get_temp_alert_max(struct bq24190_dev_info *bdi,
union power_supply_propval *val)
{
return bq24190_battery_get_temp_alert_max(bdi, val);
}
static int bq24190_charger_set_temp_alert_max(struct bq24190_dev_info *bdi,
const union power_supply_propval *val)
{
return bq24190_battery_set_temp_alert_max(bdi, val);
}
static int bq24190_charger_get_current(struct bq24190_dev_info *bdi,
union power_supply_propval *val)
{
@ -834,6 +887,12 @@ static int bq24190_charger_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_ONLINE:
ret = bq24190_charger_get_online(bdi, val);
break;
case POWER_SUPPLY_PROP_STATUS:
ret = bq24190_charger_get_status(bdi, val);
break;
case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
ret = bq24190_charger_get_temp_alert_max(bdi, val);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = bq24190_charger_get_current(bdi, val);
break;
@ -882,6 +941,12 @@ static int bq24190_charger_set_property(struct power_supply *psy,
return ret;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
ret = bq24190_charger_set_online(bdi, val);
break;
case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
ret = bq24190_charger_set_temp_alert_max(bdi, val);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
ret = bq24190_charger_set_charge_type(bdi, val);
break;
@ -907,6 +972,8 @@ static int bq24190_charger_property_is_writeable(struct power_supply *psy,
int ret;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
case POWER_SUPPLY_PROP_CHARGE_TYPE:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
@ -923,6 +990,8 @@ static enum power_supply_property bq24190_charger_properties[] = {
POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
@ -1096,6 +1165,7 @@ static int bq24190_battery_get_property(struct power_supply *psy,
struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy);
int ret;
dev_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n");
dev_dbg(bdi->dev, "prop: %d\n", psp);
ret = pm_runtime_get_sync(bdi->dev);
@ -1141,6 +1211,7 @@ static int bq24190_battery_set_property(struct power_supply *psy,
struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy);
int ret;
dev_warn(bdi->dev, "warning: /sys/class/power_supply/bq24190-battery is deprecated\n");
dev_dbg(bdi->dev, "prop: %d\n", psp);
ret = pm_runtime_get_sync(bdi->dev);
@ -1269,9 +1340,9 @@ static void bq24190_check_status(struct bq24190_dev_info *bdi)
bdi->ss_reg = ss_reg;
}
if (alert_charger)
if (alert_charger || alert_battery)
power_supply_changed(bdi->charger);
if (alert_battery)
if (alert_battery && bdi->battery)
power_supply_changed(bdi->battery);
dev_dbg(bdi->dev, "ss_reg: 0x%02x, f_reg: 0x%02x\n", ss_reg, f_reg);
@ -1476,19 +1547,23 @@ static int bq24190_probe(struct i2c_client *client,
goto out_pmrt;
}
battery_cfg.drv_data = bdi;
bdi->battery = power_supply_register(dev, &bq24190_battery_desc,
&battery_cfg);
if (IS_ERR(bdi->battery)) {
dev_err(dev, "Can't register battery\n");
ret = PTR_ERR(bdi->battery);
goto out_charger;
/* the battery class is deprecated and will be removed. */
/* in the interim, this property hides it. */
if (!device_property_read_bool(dev, "omit-battery-class")) {
battery_cfg.drv_data = bdi;
bdi->battery = power_supply_register(dev, &bq24190_battery_desc,
&battery_cfg);
if (IS_ERR(bdi->battery)) {
dev_err(dev, "Can't register battery\n");
ret = PTR_ERR(bdi->battery);
goto out_charger;
}
}
ret = bq24190_sysfs_create_group(bdi);
if (ret) {
dev_err(dev, "Can't create sysfs entries\n");
goto out_battery;
goto out_charger;
}
bdi->initialized = true;
@ -1526,10 +1601,9 @@ static int bq24190_probe(struct i2c_client *client,
out_sysfs:
bq24190_sysfs_remove_group(bdi);
out_battery:
power_supply_unregister(bdi->battery);
out_charger:
if (!IS_ERR_OR_NULL(bdi->battery))
power_supply_unregister(bdi->battery);
power_supply_unregister(bdi->charger);
out_pmrt:
@ -1552,7 +1626,8 @@ static int bq24190_remove(struct i2c_client *client)
bq24190_register_reset(bdi);
bq24190_sysfs_remove_group(bdi);
power_supply_unregister(bdi->battery);
if (bdi->battery)
power_supply_unregister(bdi->battery);
power_supply_unregister(bdi->charger);
if (error >= 0)
pm_runtime_put_sync(bdi->dev);
@ -1639,7 +1714,8 @@ static __maybe_unused int bq24190_pm_resume(struct device *dev)
/* Things may have changed while suspended so alert upper layer */
power_supply_changed(bdi->charger);
power_supply_changed(bdi->battery);
if (bdi->battery)
power_supply_changed(bdi->battery);
return 0;
}