#define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */
#define CHRG_CCCV_CHG_EN (1 << 7)
-#define CV_4100 4100 /* 4100mV */
-#define CV_4150 4150 /* 4150mV */
-#define CV_4200 4200 /* 4200mV */
-#define CV_4350 4350 /* 4350mV */
-
#define TEMP_IRQ_CFG_QWBTU (1 << 0)
#define TEMP_IRQ_CFG_WBTU (1 << 1)
#define TEMP_IRQ_CFG_QWBTO (1 << 2)
/* 1.1mV per LSB expressed in uV */
#define VOLTAGE_FROM_ADC(a) ((a * 11) / 10)
-/* properties converted to tenths of degrees, uV, uA, uW */
-#define PROP_TEMP(a) ((a) * 10)
-#define UNPROP_TEMP(a) ((a) / 10)
+/* properties converted to uV, uA */
#define PROP_VOLT(a) ((a) * 1000)
#define PROP_CURR(a) ((a) * 1000)
struct axp288_fg_info {
struct platform_device *pdev;
- struct axp20x_fg_pdata *pdata;
struct regmap *regmap;
struct regmap_irq_chip_data *regmap_irqc;
int irq[AXP288_FG_INTR_NUM];
struct power_supply *bat;
struct mutex lock;
int status;
+ int max_volt;
struct delayed_work status_monitor;
struct dentry *debug_file;
};
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
- POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_OCV,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN,
- POWER_SUPPLY_PROP_TEMP,
- POWER_SUPPLY_PROP_TEMP_MAX,
- POWER_SUPPLY_PROP_TEMP_MIN,
- POWER_SUPPLY_PROP_TEMP_ALERT_MIN,
- POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_CHARGE_FULL,
POWER_SUPPLY_PROP_CHARGE_NOW,
- POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
- POWER_SUPPLY_PROP_MODEL_NAME,
};
static int fuel_gauge_reg_readb(struct axp288_fg_info *info, int reg)
return ret;
}
-static int temp_to_adc(struct axp288_fg_info *info, int tval)
-{
- int rntc = 0, i, ret, adc_val;
- int rmin, rmax, tmin, tmax;
- int tcsz = info->pdata->tcsz;
-
- /* get the Rntc resitance value for this temp */
- if (tval > info->pdata->thermistor_curve[0][1]) {
- rntc = info->pdata->thermistor_curve[0][0];
- } else if (tval <= info->pdata->thermistor_curve[tcsz-1][1]) {
- rntc = info->pdata->thermistor_curve[tcsz-1][0];
- } else {
- for (i = 1; i < tcsz; i++) {
- if (tval > info->pdata->thermistor_curve[i][1]) {
- rmin = info->pdata->thermistor_curve[i-1][0];
- rmax = info->pdata->thermistor_curve[i][0];
- tmin = info->pdata->thermistor_curve[i-1][1];
- tmax = info->pdata->thermistor_curve[i][1];
- rntc = rmin + ((rmax - rmin) *
- (tval - tmin) / (tmax - tmin));
- break;
- }
- }
- }
-
- /* we need the current to calculate the proper adc voltage */
- ret = fuel_gauge_reg_readb(info, AXP20X_ADC_RATE);
- if (ret < 0) {
- dev_err(&info->pdev->dev, "%s:read err:%d\n", __func__, ret);
- ret = 0x30;
- }
-
- /*
- * temperature is proportional to NTS thermistor resistance
- * ADC_RATE[5-4] determines current, 00=20uA,01=40uA,10=60uA,11=80uA
- * [12-bit ADC VAL] = R_NTC(Ω) * current / 800
- */
- adc_val = rntc * (20 + (20 * ((ret >> 4) & 0x3))) / 800;
-
- return adc_val;
-}
-
-static int adc_to_temp(struct axp288_fg_info *info, int adc_val)
-{
- int ret, r, i, tval = 0;
- int rmin, rmax, tmin, tmax;
- int tcsz = info->pdata->tcsz;
-
- ret = fuel_gauge_reg_readb(info, AXP20X_ADC_RATE);
- if (ret < 0) {
- dev_err(&info->pdev->dev, "%s:read err:%d\n", __func__, ret);
- ret = 0x30;
- }
-
- /*
- * temperature is proportional to NTS thermistor resistance
- * ADC_RATE[5-4] determines current, 00=20uA,01=40uA,10=60uA,11=80uA
- * R_NTC(Ω) = [12-bit ADC VAL] * 800 / current
- */
- r = adc_val * 800 / (20 + (20 * ((ret >> 4) & 0x3)));
-
- if (r < info->pdata->thermistor_curve[0][0]) {
- tval = info->pdata->thermistor_curve[0][1];
- } else if (r >= info->pdata->thermistor_curve[tcsz-1][0]) {
- tval = info->pdata->thermistor_curve[tcsz-1][1];
- } else {
- for (i = 1; i < tcsz; i++) {
- if (r < info->pdata->thermistor_curve[i][0]) {
- rmin = info->pdata->thermistor_curve[i-1][0];
- rmax = info->pdata->thermistor_curve[i][0];
- tmin = info->pdata->thermistor_curve[i-1][1];
- tmax = info->pdata->thermistor_curve[i][1];
- tval = tmin + ((tmax - tmin) *
- (r - rmin) / (rmax - rmin));
- break;
- }
- }
- }
-
- return tval;
-}
-
-static int fuel_gauge_get_btemp(struct axp288_fg_info *info, int *btemp)
-{
- int ret, raw_val = 0;
-
- ret = pmic_read_adc_val("axp288-batt-temp", &raw_val, info);
- if (ret < 0)
- goto temp_read_fail;
-
- *btemp = adc_to_temp(info, raw_val);
-
-temp_read_fail:
- return ret;
-}
-
static int fuel_gauge_get_vocv(struct axp288_fg_info *info, int *vocv)
{
int ret, value;
static int fuel_gauge_battery_health(struct axp288_fg_info *info)
{
- int temp, vocv;
- int ret, health = POWER_SUPPLY_HEALTH_UNKNOWN;
-
- ret = fuel_gauge_get_btemp(info, &temp);
- if (ret < 0)
- goto health_read_fail;
+ int ret, vocv, health = POWER_SUPPLY_HEALTH_UNKNOWN;
ret = fuel_gauge_get_vocv(info, &vocv);
if (ret < 0)
goto health_read_fail;
- if (vocv > info->pdata->max_volt)
+ if (vocv > info->max_volt)
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
- else if (temp > info->pdata->max_temp)
- health = POWER_SUPPLY_HEALTH_OVERHEAT;
- else if (temp < info->pdata->min_temp)
- health = POWER_SUPPLY_HEALTH_COLD;
- else if (vocv < info->pdata->min_volt)
- health = POWER_SUPPLY_HEALTH_DEAD;
else
health = POWER_SUPPLY_HEALTH_GOOD;
return health;
}
-static int fuel_gauge_set_high_btemp_alert(struct axp288_fg_info *info)
-{
- int ret, adc_val;
-
- /* program temperature threshold as 1/16 ADC value */
- adc_val = temp_to_adc(info, info->pdata->max_temp);
- ret = fuel_gauge_reg_writeb(info, AXP20X_V_HTF_DISCHRG, adc_val >> 4);
-
- return ret;
-}
-
-static int fuel_gauge_set_low_btemp_alert(struct axp288_fg_info *info)
-{
- int ret, adc_val;
-
- /* program temperature threshold as 1/16 ADC value */
- adc_val = temp_to_adc(info, info->pdata->min_temp);
- ret = fuel_gauge_reg_writeb(info, AXP20X_V_LTF_DISCHRG, adc_val >> 4);
-
- return ret;
-}
-
static int fuel_gauge_get_property(struct power_supply *ps,
enum power_supply_property prop,
union power_supply_propval *val)
goto fuel_gauge_read_err;
val->intval = (ret & 0x0f);
break;
- case POWER_SUPPLY_PROP_TEMP:
- ret = fuel_gauge_get_btemp(info, &value);
- if (ret < 0)
- goto fuel_gauge_read_err;
- val->intval = PROP_TEMP(value);
- break;
- case POWER_SUPPLY_PROP_TEMP_MAX:
- case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
- val->intval = PROP_TEMP(info->pdata->max_temp);
- break;
- case POWER_SUPPLY_PROP_TEMP_MIN:
- case POWER_SUPPLY_PROP_TEMP_ALERT_MIN:
- val->intval = PROP_TEMP(info->pdata->min_temp);
- break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
value |= (ret & FG_DES_CAP0_VAL_MASK);
val->intval = value * FG_DES_CAP_RES_LSB;
break;
- case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
- val->intval = PROP_CURR(info->pdata->design_cap);
- break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
- val->intval = PROP_VOLT(info->pdata->max_volt);
- break;
- case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
- val->intval = PROP_VOLT(info->pdata->min_volt);
- break;
- case POWER_SUPPLY_PROP_MODEL_NAME:
- val->strval = info->pdata->battid;
+ val->intval = PROP_VOLT(info->max_volt);
break;
default:
mutex_unlock(&info->lock);
mutex_lock(&info->lock);
switch (prop) {
- case POWER_SUPPLY_PROP_STATUS:
- info->status = val->intval;
- break;
- case POWER_SUPPLY_PROP_TEMP_MIN:
- case POWER_SUPPLY_PROP_TEMP_ALERT_MIN:
- if ((val->intval < PD_DEF_MIN_TEMP) ||
- (val->intval > PD_DEF_MAX_TEMP)) {
- ret = -EINVAL;
- break;
- }
- info->pdata->min_temp = UNPROP_TEMP(val->intval);
- ret = fuel_gauge_set_low_btemp_alert(info);
- if (ret < 0)
- dev_err(&info->pdev->dev,
- "temp alert min set fail:%d\n", ret);
- break;
- case POWER_SUPPLY_PROP_TEMP_MAX:
- case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
- if ((val->intval < PD_DEF_MIN_TEMP) ||
- (val->intval > PD_DEF_MAX_TEMP)) {
- ret = -EINVAL;
- break;
- }
- info->pdata->max_temp = UNPROP_TEMP(val->intval);
- ret = fuel_gauge_set_high_btemp_alert(info);
- if (ret < 0)
- dev_err(&info->pdev->dev,
- "temp alert max set fail:%d\n", ret);
- break;
case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
if ((val->intval < 0) || (val->intval > 15)) {
ret = -EINVAL;
int ret;
switch (psp) {
- case POWER_SUPPLY_PROP_STATUS:
- case POWER_SUPPLY_PROP_TEMP_MIN:
- case POWER_SUPPLY_PROP_TEMP_ALERT_MIN:
- case POWER_SUPPLY_PROP_TEMP_MAX:
- case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
ret = 1;
break;
.external_power_changed = fuel_gauge_external_power_changed,
};
-static int fuel_gauge_set_lowbatt_thresholds(struct axp288_fg_info *info)
-{
- int ret;
- u8 reg_val;
-
- ret = fuel_gauge_reg_readb(info, AXP20X_FG_RES);
- if (ret < 0) {
- dev_err(&info->pdev->dev, "%s:read err:%d\n", __func__, ret);
- return ret;
- }
- ret = (ret & FG_REP_CAP_VAL_MASK);
-
- if (ret > FG_LOW_CAP_WARN_THR)
- reg_val = FG_LOW_CAP_WARN_THR;
- else if (ret > FG_LOW_CAP_CRIT_THR)
- reg_val = FG_LOW_CAP_CRIT_THR;
- else
- reg_val = FG_LOW_CAP_SHDN_THR;
-
- reg_val |= FG_LOW_CAP_THR1_VAL;
- ret = fuel_gauge_reg_writeb(info, AXP288_FG_LOW_CAP_REG, reg_val);
- if (ret < 0)
- dev_err(&info->pdev->dev, "%s:write err:%d\n", __func__, ret);
-
- return ret;
-}
-
-static int fuel_gauge_program_vbatt_full(struct axp288_fg_info *info)
-{
- int ret;
- u8 val;
-
- ret = fuel_gauge_reg_readb(info, AXP20X_CHRG_CTRL1);
- if (ret < 0)
- goto fg_prog_ocv_fail;
- else
- val = (ret & ~CHRG_CCCV_CV_MASK);
-
- switch (info->pdata->max_volt) {
- case CV_4100:
- val |= (CHRG_CCCV_CV_4100MV << CHRG_CCCV_CV_BIT_POS);
- break;
- case CV_4150:
- val |= (CHRG_CCCV_CV_4150MV << CHRG_CCCV_CV_BIT_POS);
- break;
- case CV_4200:
- val |= (CHRG_CCCV_CV_4200MV << CHRG_CCCV_CV_BIT_POS);
- break;
- case CV_4350:
- val |= (CHRG_CCCV_CV_4350MV << CHRG_CCCV_CV_BIT_POS);
- break;
- default:
- val |= (CHRG_CCCV_CV_4200MV << CHRG_CCCV_CV_BIT_POS);
- break;
- }
-
- ret = fuel_gauge_reg_writeb(info, AXP20X_CHRG_CTRL1, val);
-fg_prog_ocv_fail:
- return ret;
-}
-
-static int fuel_gauge_program_design_cap(struct axp288_fg_info *info)
-{
- int ret;
-
- ret = fuel_gauge_reg_writeb(info,
- AXP288_FG_DES_CAP1_REG, info->pdata->cap1);
- if (ret < 0)
- goto fg_prog_descap_fail;
-
- ret = fuel_gauge_reg_writeb(info,
- AXP288_FG_DES_CAP0_REG, info->pdata->cap0);
-
-fg_prog_descap_fail:
- return ret;
-}
-
-static int fuel_gauge_program_ocv_curve(struct axp288_fg_info *info)
-{
- int ret = 0, i;
-
- for (i = 0; i < OCV_CURVE_SIZE; i++) {
- ret = fuel_gauge_reg_writeb(info,
- AXP288_FG_OCV_CURVE_REG + i, info->pdata->ocv_curve[i]);
- if (ret < 0)
- goto fg_prog_ocv_fail;
- }
-
-fg_prog_ocv_fail:
- return ret;
-}
-
-static int fuel_gauge_program_rdc_vals(struct axp288_fg_info *info)
-{
- int ret;
-
- ret = fuel_gauge_reg_writeb(info,
- AXP288_FG_RDC1_REG, info->pdata->rdc1);
- if (ret < 0)
- goto fg_prog_ocv_fail;
-
- ret = fuel_gauge_reg_writeb(info,
- AXP288_FG_RDC0_REG, info->pdata->rdc0);
-
-fg_prog_ocv_fail:
- return ret;
-}
-
-static void fuel_gauge_init_config_regs(struct axp288_fg_info *info)
-{
- int ret;
-
- /*
- * check if the config data is already
- * programmed and if so just return.
- */
-
- ret = fuel_gauge_reg_readb(info, AXP288_FG_DES_CAP1_REG);
- if (ret < 0) {
- dev_warn(&info->pdev->dev, "CAP1 reg read err!!\n");
- } else if (!(ret & FG_DES_CAP1_VALID)) {
- dev_info(&info->pdev->dev, "FG data needs to be initialized\n");
- } else {
- dev_info(&info->pdev->dev, "FG data is already initialized\n");
- return;
- }
-
- ret = fuel_gauge_program_vbatt_full(info);
- if (ret < 0)
- dev_err(&info->pdev->dev, "set vbatt full fail:%d\n", ret);
-
- ret = fuel_gauge_program_design_cap(info);
- if (ret < 0)
- dev_err(&info->pdev->dev, "set design cap fail:%d\n", ret);
-
- ret = fuel_gauge_program_rdc_vals(info);
- if (ret < 0)
- dev_err(&info->pdev->dev, "set rdc fail:%d\n", ret);
-
- ret = fuel_gauge_program_ocv_curve(info);
- if (ret < 0)
- dev_err(&info->pdev->dev, "set ocv curve fail:%d\n", ret);
-
- ret = fuel_gauge_set_lowbatt_thresholds(info);
- if (ret < 0)
- dev_err(&info->pdev->dev, "lowbatt thr set fail:%d\n", ret);
-
- ret = fuel_gauge_reg_writeb(info, AXP20X_CC_CTRL, 0xef);
- if (ret < 0)
- dev_err(&info->pdev->dev, "gauge cntl set fail:%d\n", ret);
-}
-
static void fuel_gauge_init_irq(struct axp288_fg_info *info)
{
int ret, i, pirq;
static void fuel_gauge_init_hw_regs(struct axp288_fg_info *info)
{
- int ret;
unsigned int val;
- ret = fuel_gauge_set_high_btemp_alert(info);
- if (ret < 0)
- dev_err(&info->pdev->dev, "high batt temp set fail:%d\n", ret);
-
- ret = fuel_gauge_set_low_btemp_alert(info);
- if (ret < 0)
- dev_err(&info->pdev->dev, "low batt temp set fail:%d\n", ret);
-
/* enable interrupts */
val = fuel_gauge_reg_readb(info, AXP20X_IRQ3_EN);
val |= TEMP_IRQ_CFG_MASK;
info->regmap = axp20x->regmap;
info->regmap_irqc = axp20x->regmap_irqc;
info->status = POWER_SUPPLY_STATUS_UNKNOWN;
- info->pdata = pdev->dev.platform_data;
- if (!info->pdata)
- return -ENODEV;
platform_set_drvdata(pdev, info);
mutex_init(&info->lock);
INIT_DELAYED_WORK(&info->status_monitor, fuel_gauge_status_monitor);
+ ret = fuel_gauge_reg_readb(info, AXP288_FG_DES_CAP1_REG);
+ if (ret < 0)
+ return ret;
+
+ if (!(ret & FG_DES_CAP1_VALID)) {
+ dev_err(&pdev->dev, "axp288 not configured by firmware\n");
+ return -ENODEV;
+ }
+
+ ret = fuel_gauge_reg_readb(info, AXP20X_CHRG_CTRL1);
+ if (ret < 0)
+ return ret;
+ switch ((ret & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS) {
+ case CHRG_CCCV_CV_4100MV:
+ info->max_volt = 4100;
+ break;
+ case CHRG_CCCV_CV_4150MV:
+ info->max_volt = 4150;
+ break;
+ case CHRG_CCCV_CV_4200MV:
+ info->max_volt = 4200;
+ break;
+ case CHRG_CCCV_CV_4350MV:
+ info->max_volt = 4350;
+ break;
+ }
+
psy_cfg.drv_data = info;
info->bat = power_supply_register(&pdev->dev, &fuel_gauge_desc, &psy_cfg);
if (IS_ERR(info->bat)) {
}
fuel_gauge_create_debugfs(info);
- fuel_gauge_init_config_regs(info);
fuel_gauge_init_irq(info);
fuel_gauge_init_hw_regs(info);
schedule_delayed_work(&info->status_monitor, STATUS_MON_DELAY_JIFFIES);
- return ret;
+ return 0;
}
static const struct platform_device_id axp288_fg_id_table[] = {
projects / mirror_ubuntu-eoan-kernel.git / commitdiff