#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_CI BIT(4) /* Capacity Inaccurate 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 */
int charge_full;
int cycle_count;
int capacity;
+ int energy;
int flags;
-
- int current_now;
};
struct bq27x00_device_info {
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,
return ilmd;
}
+/*
+ * Return the battery Available energy in µWh
+ * Or < 0 if something fails.
+ */
+static int bq27x00_battery_read_energy(struct bq27x00_device_info *di)
+{
+ int ae;
+
+ ae = bq27x00_read(di, BQ27x00_REG_AE, false);
+ if (ae < 0) {
+ dev_err(di->dev, "error reading available energy\n");
+ return ae;
+ }
+
+ if (di->chip == BQ27500)
+ ae *= 1000;
+ else
+ ae = ae * 29200 / BQ27000_RS;
+
+ return ae;
+}
+
/*
* Return the battery Cycle count total
* Or < 0 if something fails.
cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, is_bq27500);
if (cache.flags >= 0) {
- cache.capacity = bq27x00_battery_read_rsoc(di);
+ if (!is_bq27500 && (cache.flags & BQ27000_FLAG_CI)) {
+ cache.capacity = -ENODATA;
+ cache.energy = -ENODATA;
+ cache.time_to_empty = -ENODATA;
+ cache.time_to_empty_avg = -ENODATA;
+ cache.time_to_full = -ENODATA;
+ cache.charge_full = -ENODATA;
+ } else {
+ cache.capacity = bq27x00_battery_read_rsoc(di);
+ cache.energy = bq27x00_battery_read_energy(di);
+ cache.time_to_empty = bq27x00_battery_read_time(di, BQ27x00_REG_TTE);
+ cache.time_to_empty_avg = bq27x00_battery_read_time(di, BQ27x00_REG_TTECP);
+ cache.time_to_full = bq27x00_battery_read_time(di, BQ27x00_REG_TTF);
+ cache.charge_full = bq27x00_battery_read_lmd(di);
+ }
cache.temperature = bq27x00_read(di, BQ27x00_REG_TEMP, false);
- cache.time_to_empty = bq27x00_battery_read_time(di, BQ27x00_REG_TTE);
- cache.time_to_empty_avg = bq27x00_battery_read_time(di, BQ27x00_REG_TTECP);
- cache.time_to_full = bq27x00_battery_read_time(di, BQ27x00_REG_TTF);
- cache.charge_full = bq27x00_battery_read_lmd(di);
cache.cycle_count = bq27x00_battery_read_cyct(di);
- if (!is_bq27500)
- cache.current_now = bq27x00_read(di, BQ27x00_REG_AI, false);
-
/* We only have to read charge design full once */
if (di->charge_design_full <= 0)
di->charge_design_full = bq27x00_battery_read_ilmd(di);
}
- /* Ignore current_now which is a snapshot of the current battery state
- * and is likely to be different even between two consecutive reads */
- if (memcmp(&di->cache, &cache, sizeof(cache) - sizeof(int)) != 0) {
+ if (memcmp(&di->cache, &cache, sizeof(cache)) != 0) {
di->cache = cache;
power_supply_changed(&di->bat);
}
union power_supply_propval *val)
{
int curr;
+ int flags;
- if (di->chip == BQ27500)
- curr = bq27x00_read(di, BQ27x00_REG_AI, false);
- else
- curr = di->cache.current_now;
-
+ curr = bq27x00_read(di, BQ27x00_REG_AI, false);
if (curr < 0)
return curr;
/* bq27500 returns signed value */
val->intval = (int)((s16)curr) * 1000;
} else {
- if (di->cache.flags & BQ27000_FLAG_CHGS) {
+ flags = bq27x00_read(di, BQ27x00_REG_FLAGS, false);
+ if (flags & BQ27000_FLAG_CHGS) {
dev_dbg(di->dev, "negative current!\n");
curr = -curr;
}
return 0;
}
-/*
- * Return the battery Voltage in milivolts
- * Or < 0 if something fails.
- */
-static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
+static int bq27x00_battery_capacity_level(struct bq27x00_device_info *di,
union power_supply_propval *val)
{
- int volt;
+ int level;
- volt = bq27x00_read(di, BQ27x00_REG_VOLT, false);
- if (volt < 0)
- return volt;
+ 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 = volt * 1000;
+ val->intval = level;
return 0;
}
/*
- * Return the battery Available energy in µWh
+ * Return the battery Voltage in milivolts
* Or < 0 if something fails.
*/
-static int bq27x00_battery_energy(struct bq27x00_device_info *di,
+static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
union power_supply_propval *val)
{
- int ae;
-
- ae = bq27x00_read(di, BQ27x00_REG_AE, false);
- if (ae < 0) {
- dev_err(di->dev, "error reading available energy\n");
- return ae;
- }
+ int volt;
- if (di->chip == BQ27500)
- ae *= 1000;
- else
- ae = ae * 29200 / BQ27000_RS;
+ volt = bq27x00_read(di, BQ27x00_REG_VOLT, false);
+ if (volt < 0)
+ return volt;
- val->intval = ae;
+ val->intval = volt * 1000;
return 0;
}
-
static int bq27x00_simple_value(int value,
union power_supply_propval *val)
{
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;
ret = bq27x00_simple_value(di->cache.cycle_count, val);
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
- ret = bq27x00_battery_energy(di, val);
+ ret = bq27x00_simple_value(di->cache.energy, val);
break;
default:
return -EINVAL;
git.openpandora.org / pandora-kernel.git / blobdiff