static int ec_get_battery_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct ec_battery_info *chip = container_of(psy,
struct ec_battery_info, bat);
int ret = 0, cur_sign = -1;
int comp_cap = 0;
u8 val8, cap;
u16 val16;
mutex_lock(&chip->lock);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
ret = byt_ec_read_byte(EC_BAT0_CUR_CAP_REG, &cap);
if (ret < 0)
goto ec_read_err;
ret = byt_ec_read_byte(EC_BAT0_STAT_REG, &val8);
if (ret < 0)
goto ec_read_err;
ret = byt_ec_read_word(EC_BAT0_BATTSBS_STATUS, &val16);
if (ret < 0)
goto ec_read_err;
if (val8 & BAT0_STAT_DISCHARGING)
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
else if (val8 & BAT0_STAT_CHARGING)
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else if (val8 & BAT0_STAT_LOW_BATT)
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
else if ((cap == 100) || (val16 & BAT0_BATTSBS_STATUS_FC))
val->intval = POWER_SUPPLY_STATUS_FULL;
else if (cap != 0)
val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
else
val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
break;
case POWER_SUPPLY_PROP_HEALTH:
ret = byt_ec_read_byte(EC_BAT0_STAT_REG, &val8);
if (ret < 0)
goto ec_read_err;
/* If battery is not connected
* return POWER_SUPPLY_HEALTH_UNKNOWN
*/
if (!(val8 & BAT0_STAT_BATT_PRESENT)) {
val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
break;
}
/* Battery operational temperature range is
* 0C to 40C while charging and -20 C to 60C
* while Discharging/Full/Not Charging.
*/
ret = byt_ec_read_word(EC_BAT0_TEMP_REG, &val16);
if (ret < 0)
goto ec_read_err;
/* Android framwork don't differentiate b/w hot and cold.
*Both are treated as overheat cases.
*So report overheat in both high and low temp cases.
*/
if ((val16 >= EC_BAT_CHRG_OVER_TEMP)
| (val16 <= EC_BAT_CHRG_UNDER_TEMP)) {
val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
break;
}
ret = byt_ec_read_word(EC_BAT0_VBATT_REG, &val16);
if (ret < 0)
goto ec_read_err;
/* The battery is treated as DEAD if the battery voltage is
*bellow <= 6.55V in BYT-M
*/
if (val16 <= EC_BAT_DEAD_VOLTAGE) {
val->intval = POWER_SUPPLY_HEALTH_DEAD;
break;
}
val->intval = POWER_SUPPLY_HEALTH_GOOD;
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
ret = byt_ec_read_word(EC_BAT0_VBATT_REG, &val16);
if (ret < 0)
goto ec_read_err;
val->intval = val16 * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
ret = byt_ec_read_byte(EC_BAT0_STAT_REG, &val8);
if (ret < 0)
goto ec_read_err;
if (val8 & BAT0_STAT_CHARGING) {
ret = byt_ec_read_word(EC_BAT0_CIBATT_CUR_REG, &val16);
cur_sign = 1;
} else {
ret = byt_ec_read_word(EC_BAT0_DIBATT_CUR_REG, &val16);
cur_sign = -1;
}
if (ret < 0)
goto ec_read_err;
val->intval = cur_sign * ((int)val16 * 1000);
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
ret = byt_ec_read_word(EC_BAT0_AVG_CUR_REG, &val16);
if (ret < 0)
goto ec_read_err;
val->intval = (int)adjust_sign_value(val16) * 1000;
break;
case POWER_SUPPLY_PROP_PRESENT:
ret = byt_ec_read_byte(EC_BAT0_CUR_CAP_REG, &cap);
if (ret < 0)
goto ec_read_err;
ret = byt_ec_read_byte(EC_BAT0_STAT_REG, &val8);
if (ret < 0)
goto ec_read_err;
if ((val8 & 0x7) || (cap != 0))
val->intval = 1;
else
val->intval = 0;
break;
case POWER_SUPPLY_PROP_CAPACITY:
ret = byt_ec_read_byte(EC_BAT0_CUR_CAP_REG, &val8);
if (ret < 0)
goto ec_read_err;
/* 6% of battery capacity is minimun treshold for BYT-M
*So, the 6% is mapped to 0% in android.
* 6% to 100% is compensated with 0% to 100% to OS.
* Compensated capacity = cap - ((100 - cap)*6)/100 + 0.5
*/
comp_cap = val8;
comp_cap = comp_cap*100 - ((100 - comp_cap)
*EC_BAT_SAFE_MIN_CAPACITY) + 50;
comp_cap /= 100;
if (comp_cap < 0)
comp_cap = 0;
val->intval = comp_cap;
break;
case POWER_SUPPLY_PROP_TEMP:
ret = byt_ec_read_word(EC_BAT0_TEMP_REG, &val16);
if (ret < 0)
goto ec_read_err;
/*
* convert temperature from degree kelvin
* to degree celsius: T(C) = T(K) - 273.15
* also 1 LSB of Temp register = 0.1 Kelvin.
*/
val->intval = (((int)val16 * 10) -
EC_BAT_TEMP_CONV_FACTOR) / 10;
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
ret = byt_ec_read_byte(EC_BAT0_STAT_REG, &val8);
if (ret < 0)
goto ec_read_err;
/*If battery is not connected
*return POWER_SUPPLY_TECHNOLOGY_UNKNOWN
*/
if (val8 & BAT0_STAT_BATT_PRESENT)
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
else
val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
break;
case POWER_SUPPLY_PROP_CHARGE_NOW:
ret = byt_ec_read_word(EC_BAT0_REM_CAP_REG, &val16);
if (ret < 0)
goto ec_read_err;
val->intval = ((int)val16) * 1000;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
ret = byt_ec_read_word(EC_BAT0_FULL_CHRG_CAP_REG, &val16);
if (ret < 0)
goto ec_read_err;
val->intval = ((int)val16) * 1000;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
ret = byt_ec_read_word(EC_BAT0_DESIGN_CAP_REG, &val16);
if (ret < 0)
goto ec_read_err;
val->intval = ((int)val16) * 1000;
break;
default:
mutex_unlock(&chip->lock);
return -EINVAL;
}
mutex_unlock(&chip->lock);
return 0;
ec_read_err:
mutex_unlock(&chip->lock);
return ret;
}
static int ulpmc_get_battery_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
int ret = 0;
struct ulpmc_chip_info *chip = container_of(psy,
struct ulpmc_chip_info, bat);
mutex_lock(&chip->lock);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_FLAGS);
if (ret < 0)
goto i2c_read_err;
val->intval = ulpmc_battery_status(chip, ret);
break;
case POWER_SUPPLY_PROP_HEALTH:
/*
* RVP doesn't support health detection yet.
* This feature will be supported on PR1.
*/
val->intval = POWER_SUPPLY_HEALTH_GOOD;
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_VOLT);
if (ret < 0)
goto i2c_read_err;
val->intval = ret * 1000;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
val->intval = chip->pdata->volt_sh_min * 1000;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_AI);
if (ret < 0)
goto i2c_read_err;
val->intval = ((int)adjust_sign_value(ret)) * 1000;
break;
case POWER_SUPPLY_PROP_PRESENT:
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_FLAGS);
if (ret < 0)
goto i2c_read_err;
val->intval = (ret & FG_FLAG_BDET) ? 1 : 0;
break;
case POWER_SUPPLY_PROP_CAPACITY:
if (chip->pdata->version == BYTULPMCFGV3)
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_SOC);
else
ret = ulpmc_read_reg16(chip->client,
ULPMC_FG_REG_SOC_V4);
if (ret < 0)
goto i2c_read_err;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_TEMP:
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_TEMP);
if (ret < 0)
goto i2c_read_err;
dev_dbg(&chip->client->dev, "BQ FG Temp:%d\n", ret - 2731);
/*
* RVP doesn't support temperature readings.
* This feature will be supported on PR1.
*/
val->intval = 350;
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
case POWER_SUPPLY_PROP_CHARGE_NOW:
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_RMC);
if (ret < 0)
goto i2c_read_err;
val->intval = ret * 1000;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_FCC);
if (ret < 0)
goto i2c_read_err;
val->intval = ret * 1000;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_FAC);
if (ret < 0)
goto i2c_read_err;
val->intval = ret * 1000;
break;
case POWER_SUPPLY_PROP_CYCLE_COUNT:
if (chip->pdata->version == BYTULPMCFGV3)
ret = ulpmc_read_reg16(chip->client, ULPMC_FG_REG_CYCT);
else
ret = ulpmc_read_reg16(chip->client,
ULPMC_FG_REG_CYCT_V4);
if (ret < 0)
goto i2c_read_err;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = chip->pdata->battid;
break;
default:
mutex_unlock(&chip->lock);
return -EINVAL;
}
mutex_unlock(&chip->lock);
return 0;
i2c_read_err:
mutex_unlock(&chip->lock);
return ret;
}