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bq27x00_battery: Add support for property POWER_SUPPLY_PROP_CAPACITY_LEVEL 

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This commit is contained in:
Pali Rohár 2011-11-01 01:43:04 +01:00 committed by Anton Vorontsov
parent b68f6216c5
commit d66bab3f3a
1 changed files with 39 additions and 1 deletions
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40
drivers/power/bq27x00_battery.c
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@ -54,12 +54,16 @@
#define BQ27000_REG_RSOC 0x0B /* Relative State-of-Charge */
#define BQ27000_REG_ILMD 0x76 /* Initial last measured discharge */
#define BQ27000_FLAG_CHGS BIT(7)
#define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */
#define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */
#define BQ27000_FLAG_FC BIT(5)
#define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */
#define BQ27500_REG_SOC 0x2C
#define BQ27500_REG_DCAP 0x3C /* Design capacity */
#define BQ27500_FLAG_DSC BIT(0)
#define BQ27500_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */
#define BQ27500_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */
#define BQ27500_FLAG_FC BIT(9)
#define BQ27000_RS 20 /* Resistor sense */
@ -106,6 +110,7 @@ static enum power_supply_property bq27x00_battery_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
@ -373,6 +378,36 @@ static int bq27x00_battery_status(struct bq27x00_device_info *di,
return 0;
}
static int bq27x00_battery_capacity_level(struct bq27x00_device_info *di,
union power_supply_propval *val)
{
int level;
if (di->chip == BQ27500) {
if (di->cache.flags & BQ27500_FLAG_FC)
level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
else if (di->cache.flags & BQ27500_FLAG_SOC1)
level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
else if (di->cache.flags & BQ27500_FLAG_SOCF)
level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
else
level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
} else {
if (di->cache.flags & BQ27000_FLAG_FC)
level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
else if (di->cache.flags & BQ27000_FLAG_EDV1)
level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
else if (di->cache.flags & BQ27000_FLAG_EDVF)
level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
else
level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
}
val->intval = level;
return 0;
}
/*
* Return the battery Voltage in milivolts
* Or < 0 if something fails.
@ -464,6 +499,9 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
case POWER_SUPPLY_PROP_CAPACITY:
ret = bq27x00_simple_value(di->cache.capacity, val);
break;
case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
ret = bq27x00_battery_capacity_level(di, val);
break;
case POWER_SUPPLY_PROP_TEMP:
ret = bq27x00_battery_temperature(di, val);
break;