diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/power/supply/ab8500-bm.h | 14 | ||||
-rw-r--r-- | drivers/power/supply/ab8500_bmdata.c | 27 | ||||
-rw-r--r-- | drivers/power/supply/ab8500_chargalg.c | 41 | ||||
-rw-r--r-- | drivers/power/supply/power_supply_core.c | 11 |
4 files changed, 62 insertions, 31 deletions
diff --git a/drivers/power/supply/ab8500-bm.h b/drivers/power/supply/ab8500-bm.h index 6efd5174dbce..4d74d21cf1eb 100644 --- a/drivers/power/supply/ab8500-bm.h +++ b/drivers/power/supply/ab8500-bm.h @@ -331,24 +331,12 @@ struct ab8500_maxim_parameters { * struct ab8500_battery_type - different batteries supported * @resis_high: battery upper resistance limit * @resis_low: battery lower resistance limit - * @maint_a_cur_lvl: charger current in maintenance A state in mA - * @maint_a_vol_lvl: charger voltage in maintenance A state in mV - * @maint_a_chg_timer_h: charge time in maintenance A state - * @maint_b_cur_lvl: charger current in maintenance B state in mA - * @maint_b_vol_lvl: charger voltage in maintenance B state in mV - * @maint_b_chg_timer_h: charge time in maintenance B state * @low_high_cur_lvl: charger current in temp low/high state in mA * @low_high_vol_lvl: charger voltage in temp low/high state in mV' */ struct ab8500_battery_type { int resis_high; int resis_low; - int maint_a_cur_lvl; - int maint_a_vol_lvl; - int maint_a_chg_timer_h; - int maint_b_cur_lvl; - int maint_b_vol_lvl; - int maint_b_chg_timer_h; int low_high_cur_lvl; int low_high_vol_lvl; }; @@ -393,7 +381,6 @@ struct ab8500_bm_charger_parameters { * @usb_safety_tmr_h safety timer for usb charger * @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 * @chg_unknown_bat flag to enable charging of unknown batteries * @enable_overshoot flag to enable VBAT overshoot control @@ -417,7 +404,6 @@ struct ab8500_bm_data { int usb_safety_tmr_h; int bkup_bat_v; int bkup_bat_i; - bool no_maintenance; bool capacity_scaling; bool chg_unknown_bat; bool enable_overshoot; diff --git a/drivers/power/supply/ab8500_bmdata.c b/drivers/power/supply/ab8500_bmdata.c index d8fc72be0f0e..66a454942c7c 100644 --- a/drivers/power/supply/ab8500_bmdata.c +++ b/drivers/power/supply/ab8500_bmdata.c @@ -58,16 +58,25 @@ static struct power_supply_resistance_temp_table temp_to_batres_tbl_thermistor[] { .temp = -20, .resistance = 198 /* 595 mOhm */ }, }; +static struct power_supply_maintenance_charge_table ab8500_maint_charg_table[] = { + { + /* Maintenance charging phase A, 60 hours */ + .charge_current_max_ua = 400000, + .charge_voltage_max_uv = 4050000, + .charge_safety_timer_minutes = 60*60, + }, + { + /* Maintenance charging phase B, 200 hours */ + .charge_current_max_ua = 400000, + .charge_voltage_max_uv = 4000000, + .charge_safety_timer_minutes = 200*60, + } +}; + /* Default battery type for reference designs is the unknown type */ static struct ab8500_battery_type bat_type_thermistor_unknown = { .resis_high = 0, .resis_low = 0, - .maint_a_cur_lvl = 400, - .maint_a_vol_lvl = 4050, - .maint_a_chg_timer_h = 60, - .maint_b_cur_lvl = 400, - .maint_b_vol_lvl = 4000, - .maint_b_chg_timer_h = 200, .low_high_cur_lvl = 300, .low_high_vol_lvl = 4000, }; @@ -124,7 +133,6 @@ struct ab8500_bm_data ab8500_bm_data = { .usb_safety_tmr_h = 4, .bkup_bat_v = BUP_VCH_SEL_2P6V, .bkup_bat_i = BUP_ICH_SEL_150UA, - .no_maintenance = false, .capacity_scaling = false, .chg_unknown_bat = false, .enable_overshoot = false, @@ -179,6 +187,11 @@ int ab8500_bm_of_probe(struct power_supply *psy, /* Charging stops when we drop below this current */ bi->charge_term_current_ua = 200000; + if (!bi->maintenance_charge || !bi->maintenance_charge_size) { + bi->maintenance_charge = ab8500_maint_charg_table; + bi->maintenance_charge_size = ARRAY_SIZE(ab8500_maint_charg_table); + } + /* * Internal resistance and factory resistance are tightly coupled * so both MUST be defined or we fall back to defaults. diff --git a/drivers/power/supply/ab8500_chargalg.c b/drivers/power/supply/ab8500_chargalg.c index b5a3096e78a1..6054996b6260 100644 --- a/drivers/power/supply/ab8500_chargalg.c +++ b/drivers/power/supply/ab8500_chargalg.c @@ -430,7 +430,7 @@ static void ab8500_chargalg_stop_safety_timer(struct ab8500_chargalg *di) /** * ab8500_chargalg_start_maintenance_timer() - Start charging maintenance timer * @di: pointer to the ab8500_chargalg structure - * @duration: duration of ther maintenance timer in hours + * @duration: duration of ther maintenance timer in minutes * * The maintenance timer is used to maintain the charge in the battery once * the battery is considered full. These timers are chosen to match the @@ -439,9 +439,10 @@ static void ab8500_chargalg_stop_safety_timer(struct ab8500_chargalg *di) static void ab8500_chargalg_start_maintenance_timer(struct ab8500_chargalg *di, int duration) { + /* Set a timer in minutes with a 30 second range */ hrtimer_set_expires_range(&di->maintenance_timer, - ktime_set(duration * ONE_HOUR_IN_SECONDS, 0), - ktime_set(FIVE_MINUTES_IN_SECONDS, 0)); + ktime_set(duration * 60, 0), + ktime_set(30, 0)); di->events.maintenance_timer_expired = false; hrtimer_start_expires(&di->maintenance_timer, HRTIMER_MODE_REL); } @@ -1223,6 +1224,7 @@ static void ab8500_chargalg_external_power_changed(struct power_supply *psy) static void ab8500_chargalg_algorithm(struct ab8500_chargalg *di) { struct power_supply_battery_info *bi = di->bm->bi; + struct power_supply_maintenance_charge_table *mt; int charger_status; int ret; @@ -1433,7 +1435,12 @@ static void ab8500_chargalg_algorithm(struct ab8500_chargalg *di) handle_maxim_chg_curr(di); if (di->charge_status == POWER_SUPPLY_STATUS_FULL && di->maintenance_chg) { - if (di->bm->no_maintenance) + /* + * The battery is fully charged, check if we support + * maintenance charging else go back to waiting for + * the recharge voltage limit. + */ + if (!power_supply_supports_maintenance_charging(bi)) ab8500_chargalg_state_to(di, STATE_WAIT_FOR_RECHARGE_INIT); else @@ -1454,12 +1461,19 @@ static void ab8500_chargalg_algorithm(struct ab8500_chargalg *di) break; case STATE_MAINTENANCE_A_INIT: + mt = power_supply_get_maintenance_charging_setting(bi, 0); + if (!mt) { + /* No maintenance A state, go back to normal */ + ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); + power_supply_changed(di->chargalg_psy); + break; + } ab8500_chargalg_stop_safety_timer(di); ab8500_chargalg_start_maintenance_timer(di, - di->bm->bat_type->maint_a_chg_timer_h); + mt->charge_safety_timer_minutes); ab8500_chargalg_start_charging(di, - di->bm->bat_type->maint_a_vol_lvl, - di->bm->bat_type->maint_a_cur_lvl); + mt->charge_voltage_max_uv, + mt->charge_current_max_ua); ab8500_chargalg_state_to(di, STATE_MAINTENANCE_A); power_supply_changed(di->chargalg_psy); fallthrough; @@ -1472,11 +1486,18 @@ static void ab8500_chargalg_algorithm(struct ab8500_chargalg *di) break; case STATE_MAINTENANCE_B_INIT: + mt = power_supply_get_maintenance_charging_setting(bi, 1); + if (!mt) { + /* No maintenance B state, go back to normal */ + ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); + power_supply_changed(di->chargalg_psy); + break; + } ab8500_chargalg_start_maintenance_timer(di, - di->bm->bat_type->maint_b_chg_timer_h); + mt->charge_safety_timer_minutes); ab8500_chargalg_start_charging(di, - di->bm->bat_type->maint_b_vol_lvl, - di->bm->bat_type->maint_b_cur_lvl); + mt->charge_voltage_max_uv, + mt->charge_current_max_ua); ab8500_chargalg_state_to(di, STATE_MAINTENANCE_B); power_supply_changed(di->chargalg_psy); fallthrough; diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index 8dbd1197cc62..accbbd36bfe7 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -595,6 +595,7 @@ int power_supply_get_battery_info(struct power_supply *psy, info->precharge_voltage_max_uv = -EINVAL; info->charge_restart_voltage_uv = -EINVAL; info->overvoltage_limit_uv = -EINVAL; + info->maintenance_charge = NULL; info->temp_ambient_alert_min = INT_MIN; info->temp_ambient_alert_max = INT_MAX; info->temp_alert_min = INT_MIN; @@ -844,6 +845,16 @@ int power_supply_temp2resist_simple(struct power_supply_resistance_temp_table *t } EXPORT_SYMBOL_GPL(power_supply_temp2resist_simple); +struct power_supply_maintenance_charge_table * +power_supply_get_maintenance_charging_setting(struct power_supply_battery_info *info, + int index) +{ + if (index >= info->maintenance_charge_size) + return NULL; + return &info->maintenance_charge[index]; +} +EXPORT_SYMBOL_GPL(power_supply_get_maintenance_charging_setting); + /** * power_supply_ocv2cap_simple() - find the battery capacity * @table: Pointer to battery OCV lookup table |