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path: root/drivers/power/supply/bq27xxx_battery.c
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Diffstat (limited to 'drivers/power/supply/bq27xxx_battery.c')
-rw-r--r--drivers/power/supply/bq27xxx_battery.c118
1 files changed, 65 insertions, 53 deletions
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index abca56834468..750fda543308 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -1545,7 +1545,8 @@ static int bq27xxx_battery_read_soc(struct bq27xxx_device_info *di)
* Return a battery charge value in µAh
* Or < 0 if something fails.
*/
-static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg)
+static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg,
+ union power_supply_propval *val)
{
int charge;
@@ -1561,34 +1562,39 @@ static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg)
else
charge *= 1000;
- return charge;
+ val->intval = charge;
+
+ return 0;
}
/*
* Return the battery Nominal available capacity in µAh
* Or < 0 if something fails.
*/
-static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di)
+static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
{
- return bq27xxx_battery_read_charge(di, BQ27XXX_REG_NAC);
+ return bq27xxx_battery_read_charge(di, BQ27XXX_REG_NAC, val);
}
/*
* Return the battery Remaining Capacity in µAh
* Or < 0 if something fails.
*/
-static inline int bq27xxx_battery_read_rc(struct bq27xxx_device_info *di)
+static inline int bq27xxx_battery_read_rc(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
{
- return bq27xxx_battery_read_charge(di, BQ27XXX_REG_RC);
+ return bq27xxx_battery_read_charge(di, BQ27XXX_REG_RC, val);
}
/*
* Return the battery Full Charge Capacity in µAh
* Or < 0 if something fails.
*/
-static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di)
+static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
{
- return bq27xxx_battery_read_charge(di, BQ27XXX_REG_FCC);
+ return bq27xxx_battery_read_charge(di, BQ27XXX_REG_FCC, val);
}
/*
@@ -1633,7 +1639,8 @@ static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di,
* Return the battery Available energy in µWh
* Or < 0 if something fails.
*/
-static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di)
+static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
{
int ae;
@@ -1648,14 +1655,17 @@ static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di)
else
ae *= 1000;
- return ae;
+ val->intval = ae;
+
+ return 0;
}
/*
- * Return the battery temperature in tenths of degree Kelvin
+ * Return the battery temperature in tenths of degree Celsius
* Or < 0 if something fails.
*/
-static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di)
+static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
{
int temp;
@@ -1668,14 +1678,20 @@ static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di)
if (di->opts & BQ27XXX_O_ZERO)
temp = 5 * temp / 2;
- return temp;
+ /* Convert decidegree Kelvin to Celsius */
+ temp -= 2731;
+
+ val->intval = temp;
+
+ return 0;
}
/*
* Return the battery Cycle count total
* Or < 0 if something fails.
*/
-static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di)
+static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
{
int cyct;
@@ -1683,14 +1699,17 @@ static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di)
if (cyct < 0)
dev_err(di->dev, "error reading cycle count total\n");
- return cyct;
+ val->intval = cyct;
+
+ return 0;
}
/*
* Read a time register.
* Return < 0 if something fails.
*/
-static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg)
+static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg,
+ union power_supply_propval *val)
{
int tval;
@@ -1704,7 +1723,9 @@ static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg)
if (tval == 65535)
return -ENODATA;
- return tval * 60;
+ val->intval = tval * 60;
+
+ return 0;
}
/*
@@ -1756,19 +1777,26 @@ static bool bq27xxx_battery_capacity_inaccurate(struct bq27xxx_device_info *di,
return false;
}
-static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di)
+static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di,
+ union power_supply_propval *val)
{
+ int health;
+
/* Unlikely but important to return first */
if (unlikely(bq27xxx_battery_overtemp(di, di->cache.flags)))
- return POWER_SUPPLY_HEALTH_OVERHEAT;
- if (unlikely(bq27xxx_battery_undertemp(di, di->cache.flags)))
- return POWER_SUPPLY_HEALTH_COLD;
- if (unlikely(bq27xxx_battery_dead(di, di->cache.flags)))
- return POWER_SUPPLY_HEALTH_DEAD;
- if (unlikely(bq27xxx_battery_capacity_inaccurate(di, di->cache.flags)))
- return POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED;
-
- return POWER_SUPPLY_HEALTH_GOOD;
+ health = POWER_SUPPLY_HEALTH_OVERHEAT;
+ else if (unlikely(bq27xxx_battery_undertemp(di, di->cache.flags)))
+ health = POWER_SUPPLY_HEALTH_COLD;
+ else if (unlikely(bq27xxx_battery_dead(di, di->cache.flags)))
+ health = POWER_SUPPLY_HEALTH_DEAD;
+ else if (unlikely(bq27xxx_battery_capacity_inaccurate(di, di->cache.flags)))
+ health = POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED;
+ else
+ health = POWER_SUPPLY_HEALTH_GOOD;
+
+ val->intval = health;
+
+ return 0;
}
static bool bq27xxx_battery_is_full(struct bq27xxx_device_info *di, int flags)
@@ -1851,22 +1879,8 @@ static void bq27xxx_battery_update_unlocked(struct bq27xxx_device_info *di)
if ((cache.flags & 0xff) == 0xff)
cache.flags = -1; /* read error */
if (cache.flags >= 0) {
- cache.temperature = bq27xxx_battery_read_temperature(di);
- if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR)
- cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE);
- if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR)
- cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP);
- if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR)
- cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF);
-
- cache.charge_full = bq27xxx_battery_read_fcc(di);
cache.capacity = bq27xxx_battery_read_soc(di);
- if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR)
- cache.energy = bq27xxx_battery_read_energy(di);
di->cache.flags = cache.flags;
- cache.health = bq27xxx_battery_read_health(di);
- if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR)
- cache.cycle_count = bq27xxx_battery_read_cyct(di);
/*
* On gauges with signed current reporting the current must be
@@ -2038,18 +2052,16 @@ static int bq27xxx_battery_get_property(struct power_supply *psy,
ret = bq27xxx_battery_capacity_level(di, val);
break;
case POWER_SUPPLY_PROP_TEMP:
- ret = bq27xxx_simple_value(di->cache.temperature, val);
- if (ret == 0)
- val->intval -= 2731; /* convert decidegree k to c */
+ ret = bq27xxx_battery_read_temperature(di, val);
break;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
- ret = bq27xxx_simple_value(di->cache.time_to_empty, val);
+ ret = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE, val);
break;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
- ret = bq27xxx_simple_value(di->cache.time_to_empty_avg, val);
+ ret = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP, val);
break;
case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
- ret = bq27xxx_simple_value(di->cache.time_to_full, val);
+ ret = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF, val);
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
if (di->opts & BQ27XXX_O_MUL_CHEM)
@@ -2059,12 +2071,12 @@ static int bq27xxx_battery_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_CHARGE_NOW:
if (di->regs[BQ27XXX_REG_NAC] != INVALID_REG_ADDR)
- ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val);
+ ret = bq27xxx_battery_read_nac(di, val);
else
- ret = bq27xxx_simple_value(bq27xxx_battery_read_rc(di), val);
+ ret = bq27xxx_battery_read_rc(di, val);
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
- ret = bq27xxx_simple_value(di->cache.charge_full, val);
+ ret = bq27xxx_battery_read_fcc(di, val);
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
ret = bq27xxx_battery_read_dcap(di, val);
@@ -2077,16 +2089,16 @@ static int bq27xxx_battery_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
return -EINVAL;
case POWER_SUPPLY_PROP_CYCLE_COUNT:
- ret = bq27xxx_simple_value(di->cache.cycle_count, val);
+ ret = bq27xxx_battery_read_cyct(di, val);
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
- ret = bq27xxx_simple_value(di->cache.energy, val);
+ ret = bq27xxx_battery_read_energy(di, val);
break;
case POWER_SUPPLY_PROP_POWER_AVG:
ret = bq27xxx_battery_pwr_avg(di, val);
break;
case POWER_SUPPLY_PROP_HEALTH:
- ret = bq27xxx_simple_value(di->cache.health, val);
+ ret = bq27xxx_battery_read_health(di, val);
break;
case POWER_SUPPLY_PROP_MANUFACTURER:
val->strval = BQ27XXX_MANUFACTURER;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 14:45:45 +0100