aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/power/ab8500_bmdata.c19
-rw-r--r--drivers/power/ab8500_fg.c146
-rw-r--r--drivers/power/abx500_chargalg.c30
-rw-r--r--include/linux/mfd/abx500.h6
-rw-r--r--include/linux/mfd/abx500/ab8500-bm.h2
5 files changed, 168 insertions, 35 deletions
diff --git a/drivers/power/ab8500_bmdata.c b/drivers/power/ab8500_bmdata.c
index 0bf52369d6a..20c157b4fe9 100644
--- a/drivers/power/ab8500_bmdata.c
+++ b/drivers/power/ab8500_bmdata.c
@@ -192,7 +192,7 @@ static struct abx500_battery_type bat_type_thermistor[] = {
.nominal_voltage = 3700,
.termination_vol = 4050,
.termination_curr = 200,
- .recharge_vol = 3990,
+ .recharge_cap = 95,
.normal_cur_lvl = 400,
.normal_vol_lvl = 4100,
.maint_a_cur_lvl = 400,
@@ -219,7 +219,7 @@ static struct abx500_battery_type bat_type_thermistor[] = {
.nominal_voltage = 3600,
.termination_vol = 4150,
.termination_curr = 80,
- .recharge_vol = 4130,
+ .recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
@@ -247,7 +247,7 @@ static struct abx500_battery_type bat_type_thermistor[] = {
.nominal_voltage = 3600,
.termination_vol = 4150,
.termination_curr = 80,
- .recharge_vol = 4130,
+ .recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
@@ -278,7 +278,7 @@ static struct abx500_battery_type bat_type_ext_thermistor[] = {
.nominal_voltage = 3700,
.termination_vol = 4050,
.termination_curr = 200,
- .recharge_vol = 3990,
+ .recharge_cap = 95,
.normal_cur_lvl = 400,
.normal_vol_lvl = 4100,
.maint_a_cur_lvl = 400,
@@ -310,7 +310,7 @@ static struct abx500_battery_type bat_type_ext_thermistor[] = {
.nominal_voltage = 3700,
.termination_vol = 4150,
.termination_curr = 100,
- .recharge_vol = 4130,
+ .recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
@@ -337,7 +337,7 @@ static struct abx500_battery_type bat_type_ext_thermistor[] = {
.nominal_voltage = 3700,
.termination_vol = 4150,
.termination_curr = 100,
- .recharge_vol = 4130,
+ .recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
@@ -364,7 +364,7 @@ static struct abx500_battery_type bat_type_ext_thermistor[] = {
.nominal_voltage = 3700,
.termination_vol = 4150,
.termination_curr = 100,
- .recharge_vol = 4130,
+ .recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
@@ -405,8 +405,8 @@ static const struct abx500_fg_parameters fg = {
.lowbat_threshold = 3100,
.battok_falling_th_sel0 = 2860,
.battok_raising_th_sel1 = 2860,
+ .maint_thres = 95,
.user_cap_limit = 15,
- .maint_thres = 97,
};
static const struct abx500_maxim_parameters maxi_params = {
@@ -435,6 +435,7 @@ struct abx500_bm_data ab8500_bm_data = {
.bkup_bat_v = BUP_VCH_SEL_2P6V,
.bkup_bat_i = BUP_ICH_SEL_150UA,
.no_maintenance = false,
+ .capacity_scaling = false,
.adc_therm = ABx500_ADC_THERM_BATCTRL,
.chg_unknown_bat = false,
.enable_overshoot = false,
@@ -479,7 +480,7 @@ int __devinit ab8500_bm_of_probe(struct device *dev,
bm->chg_unknown_bat = true;
bm->bat_type[BATTERY_UNKNOWN].charge_full_design = 2600;
bm->bat_type[BATTERY_UNKNOWN].termination_vol = 4150;
- bm->bat_type[BATTERY_UNKNOWN].recharge_vol = 4130;
+ bm->bat_type[BATTERY_UNKNOWN].recharge_cap = 95;
bm->bat_type[BATTERY_UNKNOWN].normal_cur_lvl = 520;
bm->bat_type[BATTERY_UNKNOWN].normal_vol_lvl = 4200;
}
diff --git a/drivers/power/ab8500_fg.c b/drivers/power/ab8500_fg.c
index f3dbba8b392..76fab6b5c54 100644
--- a/drivers/power/ab8500_fg.c
+++ b/drivers/power/ab8500_fg.c
@@ -113,6 +113,13 @@ struct ab8500_fg_avg_cap {
int sum;
};
+struct ab8500_fg_cap_scaling {
+ bool enable;
+ int cap_to_scale[2];
+ int disable_cap_level;
+ int scaled_cap;
+};
+
struct ab8500_fg_battery_capacity {
int max_mah_design;
int max_mah;
@@ -123,6 +130,7 @@ struct ab8500_fg_battery_capacity {
int prev_percent;
int prev_level;
int user_mah;
+ struct ab8500_fg_cap_scaling cap_scale;
};
struct ab8500_fg_flags {
@@ -1167,6 +1175,99 @@ static int ab8500_fg_capacity_level(struct ab8500_fg *di)
}
/**
+ * ab8500_fg_calculate_scaled_capacity() - Capacity scaling
+ * @di: pointer to the ab8500_fg structure
+ *
+ * Calculates the capacity to be shown to upper layers. Scales the capacity
+ * to have 100% as a reference from the actual capacity upon removal of charger
+ * when charging is in maintenance mode.
+ */
+static int ab8500_fg_calculate_scaled_capacity(struct ab8500_fg *di)
+{
+ struct ab8500_fg_cap_scaling *cs = &di->bat_cap.cap_scale;
+ int capacity = di->bat_cap.prev_percent;
+
+ if (!cs->enable)
+ return capacity;
+
+ /*
+ * As long as we are in fully charge mode scale the capacity
+ * to show 100%.
+ */
+ if (di->flags.fully_charged) {
+ cs->cap_to_scale[0] = 100;
+ cs->cap_to_scale[1] =
+ max(capacity, di->bm->fg_params->maint_thres);
+ dev_dbg(di->dev, "Scale cap with %d/%d\n",
+ cs->cap_to_scale[0], cs->cap_to_scale[1]);
+ }
+
+ /* Calculates the scaled capacity. */
+ if ((cs->cap_to_scale[0] != cs->cap_to_scale[1])
+ && (cs->cap_to_scale[1] > 0))
+ capacity = min(100,
+ DIV_ROUND_CLOSEST(di->bat_cap.prev_percent *
+ cs->cap_to_scale[0],
+ cs->cap_to_scale[1]));
+
+ if (di->flags.charging) {
+ if (capacity < cs->disable_cap_level) {
+ cs->disable_cap_level = capacity;
+ dev_dbg(di->dev, "Cap to stop scale lowered %d%%\n",
+ cs->disable_cap_level);
+ } else if (!di->flags.fully_charged) {
+ if (di->bat_cap.prev_percent >=
+ cs->disable_cap_level) {
+ dev_dbg(di->dev, "Disabling scaled capacity\n");
+ cs->enable = false;
+ capacity = di->bat_cap.prev_percent;
+ } else {
+ dev_dbg(di->dev,
+ "Waiting in cap to level %d%%\n",
+ cs->disable_cap_level);
+ capacity = cs->disable_cap_level;
+ }
+ }
+ }
+
+ return capacity;
+}
+
+/**
+ * ab8500_fg_update_cap_scalers() - Capacity scaling
+ * @di: pointer to the ab8500_fg structure
+ *
+ * To be called when state change from charge<->discharge to update
+ * the capacity scalers.
+ */
+static void ab8500_fg_update_cap_scalers(struct ab8500_fg *di)
+{
+ struct ab8500_fg_cap_scaling *cs = &di->bat_cap.cap_scale;
+
+ if (!cs->enable)
+ return;
+ if (di->flags.charging) {
+ di->bat_cap.cap_scale.disable_cap_level =
+ di->bat_cap.cap_scale.scaled_cap;
+ dev_dbg(di->dev, "Cap to stop scale at charge %d%%\n",
+ di->bat_cap.cap_scale.disable_cap_level);
+ } else {
+ if (cs->scaled_cap != 100) {
+ cs->cap_to_scale[0] = cs->scaled_cap;
+ cs->cap_to_scale[1] = di->bat_cap.prev_percent;
+ } else {
+ cs->cap_to_scale[0] = 100;
+ cs->cap_to_scale[1] =
+ max(di->bat_cap.prev_percent,
+ di->bm->fg_params->maint_thres);
+ }
+
+ dev_dbg(di->dev, "Cap to scale at discharge %d/%d\n",
+ cs->cap_to_scale[0], cs->cap_to_scale[1]);
+ }
+}
+
+/**
* ab8500_fg_check_capacity_limits() - Check if capacity has changed
* @di: pointer to the ab8500_fg structure
* @init: capacity is allowed to go up in init mode
@@ -1214,16 +1315,24 @@ static void ab8500_fg_check_capacity_limits(struct ab8500_fg *di, bool init)
} else if (di->flags.fully_charged) {
/*
* We report 100% if algorithm reported fully charged
- * unless capacity drops too much
+ * and show 100% during maintenance charging (scaling).
*/
if (di->flags.force_full) {
di->bat_cap.prev_percent = di->bat_cap.permille / 10;
di->bat_cap.prev_mah = di->bat_cap.mah;
- } else if (!di->flags.force_full &&
- di->bat_cap.prev_percent !=
- (di->bat_cap.permille) / 10 &&
- (di->bat_cap.permille / 10) <
- di->bm->fg_params->maint_thres) {
+
+ changed = true;
+
+ if (!di->bat_cap.cap_scale.enable &&
+ di->bm->capacity_scaling) {
+ di->bat_cap.cap_scale.enable = true;
+ di->bat_cap.cap_scale.cap_to_scale[0] = 100;
+ di->bat_cap.cap_scale.cap_to_scale[1] =
+ di->bat_cap.prev_percent;
+ di->bat_cap.cap_scale.disable_cap_level = 100;
+ }
+ } else if ( di->bat_cap.prev_percent !=
+ (di->bat_cap.permille) / 10) {
dev_dbg(di->dev,
"battery reported full "
"but capacity dropping: %d\n",
@@ -1272,6 +1381,14 @@ static void ab8500_fg_check_capacity_limits(struct ab8500_fg *di, bool init)
}
if (changed) {
+ if (di->bm->capacity_scaling) {
+ di->bat_cap.cap_scale.scaled_cap =
+ ab8500_fg_calculate_scaled_capacity(di);
+
+ dev_info(di->dev, "capacity=%d (%d)\n",
+ di->bat_cap.prev_percent,
+ di->bat_cap.cap_scale.scaled_cap);
+ }
power_supply_changed(&di->fg_psy);
if (di->flags.fully_charged && di->flags.force_full) {
dev_dbg(di->dev, "Battery full, notifying.\n");
@@ -1337,7 +1454,7 @@ static void ab8500_fg_algorithm_charging(struct ab8500_fg *di)
* Read the FG and calculate the new capacity
*/
mutex_lock(&di->cc_lock);
- if (!di->flags.conv_done) {
+ if (!di->flags.conv_done && !di->flags.force_full) {
/* Wasn't the CC IRQ that got us here */
mutex_unlock(&di->cc_lock);
dev_dbg(di->dev, "%s CC conv not done\n",
@@ -2027,7 +2144,9 @@ static int ab8500_fg_get_property(struct power_supply *psy,
val->intval = di->bat_cap.prev_mah;
break;
case POWER_SUPPLY_PROP_CAPACITY:
- if (di->flags.batt_unknown && !di->bm->chg_unknown_bat &&
+ if (di->bm->capacity_scaling)
+ val->intval = di->bat_cap.cap_scale.scaled_cap;
+ else if (di->flags.batt_unknown && !di->bm->chg_unknown_bat &&
di->flags.batt_id_received)
val->intval = 100;
else
@@ -2091,6 +2210,8 @@ static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data)
break;
di->flags.charging = false;
di->flags.fully_charged = false;
+ if (di->bm->capacity_scaling)
+ ab8500_fg_update_cap_scalers(di);
queue_work(di->fg_wq, &di->fg_work);
break;
case POWER_SUPPLY_STATUS_FULL:
@@ -2103,10 +2224,13 @@ static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data)
queue_work(di->fg_wq, &di->fg_work);
break;
case POWER_SUPPLY_STATUS_CHARGING:
- if (di->flags.charging)
+ if (di->flags.charging &&
+ !di->flags.fully_charged)
break;
di->flags.charging = true;
di->flags.fully_charged = false;
+ if (di->bm->capacity_scaling)
+ ab8500_fg_update_cap_scalers(di);
queue_work(di->fg_wq, &di->fg_work);
break;
};
@@ -2146,8 +2270,8 @@ static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data)
case POWER_SUPPLY_PROP_TEMP:
switch (ext->type) {
case POWER_SUPPLY_TYPE_BATTERY:
- if (di->flags.batt_id_received)
- di->bat_temp = ret.intval;
+ if (di->flags.batt_id_received)
+ di->bat_temp = ret.intval;
break;
default:
break;
diff --git a/drivers/power/abx500_chargalg.c b/drivers/power/abx500_chargalg.c
index 8b69da0ae5a..78b623572b5 100644
--- a/drivers/power/abx500_chargalg.c
+++ b/drivers/power/abx500_chargalg.c
@@ -33,9 +33,6 @@
/* End-of-charge criteria counter */
#define EOC_COND_CNT 10
-/* Recharge criteria counter */
-#define RCH_COND_CNT 3
-
#define to_abx500_chargalg_device_info(x) container_of((x), \
struct abx500_chargalg, chargalg_psy);
@@ -196,7 +193,6 @@ enum maxim_ret {
* @dev: pointer to the structure device
* @charge_status: battery operating status
* @eoc_cnt: counter used to determine end-of_charge
- * @rch_cnt: counter used to determine start of recharge
* @maintenance_chg: indicate if maintenance charge is active
* @t_hyst_norm temperature hysteresis when the temperature has been
* over or under normal limits
@@ -223,7 +219,6 @@ struct abx500_chargalg {
struct device *dev;
int charge_status;
int eoc_cnt;
- int rch_cnt;
bool maintenance_chg;
int t_hyst_norm;
int t_hyst_lowhigh;
@@ -858,6 +853,7 @@ static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
union power_supply_propval ret;
int i, j;
bool psy_found = false;
+ bool capacity_updated = false;
psy = (struct power_supply *)data;
ext = dev_get_drvdata(dev);
@@ -870,6 +866,16 @@ static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
if (!psy_found)
return 0;
+ /*
+ * If external is not registering 'POWER_SUPPLY_PROP_CAPACITY' to its
+ * property because of handling that sysfs entry on its own, this is
+ * the place to get the battery capacity.
+ */
+ if (!ext->get_property(ext, POWER_SUPPLY_PROP_CAPACITY, &ret)) {
+ di->batt_data.percent = ret.intval;
+ capacity_updated = true;
+ }
+
/* Go through all properties for the psy */
for (j = 0; j < ext->num_properties; j++) {
enum power_supply_property prop;
@@ -1154,7 +1160,8 @@ static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
}
break;
case POWER_SUPPLY_PROP_CAPACITY:
- di->batt_data.percent = ret.intval;
+ if (!capacity_updated)
+ di->batt_data.percent = ret.intval;
break;
default:
break;
@@ -1424,16 +1431,13 @@ static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
case STATE_WAIT_FOR_RECHARGE_INIT:
abx500_chargalg_hold_charging(di);
abx500_chargalg_state_to(di, STATE_WAIT_FOR_RECHARGE);
- di->rch_cnt = RCH_COND_CNT;
/* Intentional fallthrough */
case STATE_WAIT_FOR_RECHARGE:
- if (di->batt_data.volt <=
- di->bm->bat_type[di->bm->batt_id].recharge_vol) {
- if (di->rch_cnt-- == 0)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- } else
- di->rch_cnt = RCH_COND_CNT;
+ if (di->batt_data.percent <=
+ di->bm->bat_type[di->bm->batt_id].
+ recharge_cap)
+ abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
break;
case STATE_MAINTENANCE_A_INIT:
diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h
index 4906b1842d2..0e6e90badfc 100644
--- a/include/linux/mfd/abx500.h
+++ b/include/linux/mfd/abx500.h
@@ -131,7 +131,7 @@ struct abx500_maxim_parameters {
* @nominal_voltage: Nominal voltage of the battery in mV
* @termination_vol: max voltage upto which battery can be charged
* @termination_curr battery charging termination current in mA
- * @recharge_vol battery voltage limit that will trigger a new
+ * @recharge_cap battery capacity limit that will trigger a new
* full charging cycle in the case where maintenan-
* -ce charging has been disabled
* @normal_cur_lvl: charger current in normal state in mA
@@ -160,7 +160,7 @@ struct abx500_battery_type {
int nominal_voltage;
int termination_vol;
int termination_curr;
- int recharge_vol;
+ int recharge_cap;
int normal_cur_lvl;
int normal_vol_lvl;
int maint_a_cur_lvl;
@@ -224,6 +224,7 @@ struct abx500_bm_charger_parameters {
* @bkup_bat_v voltage which we charge the backup battery with
* @bkup_bat_i current which we charge the backup battery with
* @no_maintenance indicates that maintenance charging is disabled
+ * @capacity_scaling indicates whether capacity scaling is to be used
* @abx500_adc_therm placement of thermistor, batctrl or battemp adc
* @chg_unknown_bat flag to enable charging of unknown batteries
* @enable_overshoot flag to enable VBAT overshoot control
@@ -254,6 +255,7 @@ struct abx500_bm_data {
int bkup_bat_v;
int bkup_bat_i;
bool no_maintenance;
+ bool capacity_scaling;
bool chg_unknown_bat;
bool enable_overshoot;
bool auto_trig;
diff --git a/include/linux/mfd/abx500/ab8500-bm.h b/include/linux/mfd/abx500/ab8500-bm.h
index 6c6a02e53cd..fac684a6f34 100644
--- a/include/linux/mfd/abx500/ab8500-bm.h
+++ b/include/linux/mfd/abx500/ab8500-bm.h
@@ -355,6 +355,7 @@ struct ab8500_bm_charger_parameters {
* @bkup_bat_v voltage which we charge the backup battery with
* @bkup_bat_i current which we charge the backup battery with
* @no_maintenance indicates that maintenance charging is disabled
+ * @capacity_scaling indicates whether capacity scaling is to be used
* @adc_therm placement of thermistor, batctrl or battemp adc
* @chg_unknown_bat flag to enable charging of unknown batteries
* @enable_overshoot flag to enable VBAT overshoot control
@@ -383,6 +384,7 @@ struct ab8500_bm_data {
int bkup_bat_v;
int bkup_bat_i;
bool no_maintenance;
+ bool capacity_scaling;
bool chg_unknown_bat;
bool enable_overshoot;
enum abx500_adc_therm adc_therm;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-29 01:21:45 +0000