1c5b64a99SLinus Walleij // SPDX-License-Identifier: GPL-2.0-only 2c5b64a99SLinus Walleij /* 3c5b64a99SLinus Walleij * Copyright (C) ST-Ericsson SA 2012 4c5b64a99SLinus Walleij * Copyright (c) 2012 Sony Mobile Communications AB 5c5b64a99SLinus Walleij * 6c5b64a99SLinus Walleij * Charging algorithm driver for AB8500 7c5b64a99SLinus Walleij * 8c5b64a99SLinus Walleij * Authors: 9c5b64a99SLinus Walleij * Johan Palsson <johan.palsson@stericsson.com> 10c5b64a99SLinus Walleij * Karl Komierowski <karl.komierowski@stericsson.com> 11c5b64a99SLinus Walleij * Arun R Murthy <arun.murthy@stericsson.com> 12c5b64a99SLinus Walleij * Author: Imre Sunyi <imre.sunyi@sonymobile.com> 13c5b64a99SLinus Walleij */ 14c5b64a99SLinus Walleij 15c5b64a99SLinus Walleij #include <linux/init.h> 16c5b64a99SLinus Walleij #include <linux/module.h> 17c5b64a99SLinus Walleij #include <linux/device.h> 18c5b64a99SLinus Walleij #include <linux/component.h> 19c5b64a99SLinus Walleij #include <linux/hrtimer.h> 20c5b64a99SLinus Walleij #include <linux/interrupt.h> 21c5b64a99SLinus Walleij #include <linux/delay.h> 22c5b64a99SLinus Walleij #include <linux/slab.h> 23c5b64a99SLinus Walleij #include <linux/platform_device.h> 24c5b64a99SLinus Walleij #include <linux/power_supply.h> 25c5b64a99SLinus Walleij #include <linux/completion.h> 26c5b64a99SLinus Walleij #include <linux/workqueue.h> 27c5b64a99SLinus Walleij #include <linux/kobject.h> 28c5b64a99SLinus Walleij #include <linux/of.h> 29c5b64a99SLinus Walleij #include <linux/mfd/core.h> 30c5b64a99SLinus Walleij #include <linux/mfd/abx500.h> 31c5b64a99SLinus Walleij #include <linux/mfd/abx500/ab8500.h> 32c5b64a99SLinus Walleij #include <linux/notifier.h> 33c5b64a99SLinus Walleij 34c5b64a99SLinus Walleij #include "ab8500-bm.h" 35c5b64a99SLinus Walleij #include "ab8500-chargalg.h" 36c5b64a99SLinus Walleij 37c5b64a99SLinus Walleij /* Watchdog kick interval */ 38c5b64a99SLinus Walleij #define CHG_WD_INTERVAL (6 * HZ) 39c5b64a99SLinus Walleij 40c5b64a99SLinus Walleij /* End-of-charge criteria counter */ 41c5b64a99SLinus Walleij #define EOC_COND_CNT 10 42c5b64a99SLinus Walleij 43c5b64a99SLinus Walleij /* One hour expressed in seconds */ 44c5b64a99SLinus Walleij #define ONE_HOUR_IN_SECONDS 3600 45c5b64a99SLinus Walleij 46c5b64a99SLinus Walleij /* Five minutes expressed in seconds */ 47c5b64a99SLinus Walleij #define FIVE_MINUTES_IN_SECONDS 300 48c5b64a99SLinus Walleij 491091ed7dSLinus Walleij /* 501091ed7dSLinus Walleij * This is the battery capacity limit that will trigger a new 511091ed7dSLinus Walleij * full charging cycle in the case where maintenance charging 521091ed7dSLinus Walleij * has been disabled 531091ed7dSLinus Walleij */ 541091ed7dSLinus Walleij #define AB8500_RECHARGE_CAP 95 551091ed7dSLinus Walleij 56c5b64a99SLinus Walleij enum ab8500_chargers { 57c5b64a99SLinus Walleij NO_CHG, 58c5b64a99SLinus Walleij AC_CHG, 59c5b64a99SLinus Walleij USB_CHG, 60c5b64a99SLinus Walleij }; 61c5b64a99SLinus Walleij 62c5b64a99SLinus Walleij struct ab8500_chargalg_charger_info { 63c5b64a99SLinus Walleij enum ab8500_chargers conn_chg; 64c5b64a99SLinus Walleij enum ab8500_chargers prev_conn_chg; 65c5b64a99SLinus Walleij enum ab8500_chargers online_chg; 66c5b64a99SLinus Walleij enum ab8500_chargers prev_online_chg; 67c5b64a99SLinus Walleij enum ab8500_chargers charger_type; 68c5b64a99SLinus Walleij bool usb_chg_ok; 69c5b64a99SLinus Walleij bool ac_chg_ok; 70bc6e0287SLinus Walleij int usb_volt_uv; 7183e5aa77SLinus Walleij int usb_curr_ua; 72bc6e0287SLinus Walleij int ac_volt_uv; 7383e5aa77SLinus Walleij int ac_curr_ua; 74bc6e0287SLinus Walleij int usb_vset_uv; 7583e5aa77SLinus Walleij int usb_iset_ua; 76bc6e0287SLinus Walleij int ac_vset_uv; 7783e5aa77SLinus Walleij int ac_iset_ua; 78c5b64a99SLinus Walleij }; 79c5b64a99SLinus Walleij 80c5b64a99SLinus Walleij struct ab8500_chargalg_battery_data { 81c5b64a99SLinus Walleij int temp; 822a5f4183SLinus Walleij int volt_uv; 839c20899dSLinus Walleij int avg_curr_ua; 8483e5aa77SLinus Walleij int inst_curr_ua; 85c5b64a99SLinus Walleij int percent; 86c5b64a99SLinus Walleij }; 87c5b64a99SLinus Walleij 88c5b64a99SLinus Walleij enum ab8500_chargalg_states { 89c5b64a99SLinus Walleij STATE_HANDHELD_INIT, 90c5b64a99SLinus Walleij STATE_HANDHELD, 91c5b64a99SLinus Walleij STATE_CHG_NOT_OK_INIT, 92c5b64a99SLinus Walleij STATE_CHG_NOT_OK, 93c5b64a99SLinus Walleij STATE_HW_TEMP_PROTECT_INIT, 94c5b64a99SLinus Walleij STATE_HW_TEMP_PROTECT, 95c5b64a99SLinus Walleij STATE_NORMAL_INIT, 96c5b64a99SLinus Walleij STATE_NORMAL, 97c5b64a99SLinus Walleij STATE_WAIT_FOR_RECHARGE_INIT, 98c5b64a99SLinus Walleij STATE_WAIT_FOR_RECHARGE, 99c5b64a99SLinus Walleij STATE_MAINTENANCE_A_INIT, 100c5b64a99SLinus Walleij STATE_MAINTENANCE_A, 101c5b64a99SLinus Walleij STATE_MAINTENANCE_B_INIT, 102c5b64a99SLinus Walleij STATE_MAINTENANCE_B, 103c5b64a99SLinus Walleij STATE_TEMP_UNDEROVER_INIT, 104c5b64a99SLinus Walleij STATE_TEMP_UNDEROVER, 105c5b64a99SLinus Walleij STATE_TEMP_LOWHIGH_INIT, 106c5b64a99SLinus Walleij STATE_TEMP_LOWHIGH, 107c5b64a99SLinus Walleij STATE_OVV_PROTECT_INIT, 108c5b64a99SLinus Walleij STATE_OVV_PROTECT, 109c5b64a99SLinus Walleij STATE_SAFETY_TIMER_EXPIRED_INIT, 110c5b64a99SLinus Walleij STATE_SAFETY_TIMER_EXPIRED, 111c5b64a99SLinus Walleij STATE_BATT_REMOVED_INIT, 112c5b64a99SLinus Walleij STATE_BATT_REMOVED, 113c5b64a99SLinus Walleij STATE_WD_EXPIRED_INIT, 114c5b64a99SLinus Walleij STATE_WD_EXPIRED, 115c5b64a99SLinus Walleij }; 116c5b64a99SLinus Walleij 11738334231SColin Ian King static const char * const states[] = { 118c5b64a99SLinus Walleij "HANDHELD_INIT", 119c5b64a99SLinus Walleij "HANDHELD", 120c5b64a99SLinus Walleij "CHG_NOT_OK_INIT", 121c5b64a99SLinus Walleij "CHG_NOT_OK", 122c5b64a99SLinus Walleij "HW_TEMP_PROTECT_INIT", 123c5b64a99SLinus Walleij "HW_TEMP_PROTECT", 124c5b64a99SLinus Walleij "NORMAL_INIT", 125c5b64a99SLinus Walleij "NORMAL", 126c5b64a99SLinus Walleij "WAIT_FOR_RECHARGE_INIT", 127c5b64a99SLinus Walleij "WAIT_FOR_RECHARGE", 128c5b64a99SLinus Walleij "MAINTENANCE_A_INIT", 129c5b64a99SLinus Walleij "MAINTENANCE_A", 130c5b64a99SLinus Walleij "MAINTENANCE_B_INIT", 131c5b64a99SLinus Walleij "MAINTENANCE_B", 132c5b64a99SLinus Walleij "TEMP_UNDEROVER_INIT", 133c5b64a99SLinus Walleij "TEMP_UNDEROVER", 134c5b64a99SLinus Walleij "TEMP_LOWHIGH_INIT", 135c5b64a99SLinus Walleij "TEMP_LOWHIGH", 136c5b64a99SLinus Walleij "OVV_PROTECT_INIT", 137c5b64a99SLinus Walleij "OVV_PROTECT", 138c5b64a99SLinus Walleij "SAFETY_TIMER_EXPIRED_INIT", 139c5b64a99SLinus Walleij "SAFETY_TIMER_EXPIRED", 140c5b64a99SLinus Walleij "BATT_REMOVED_INIT", 141c5b64a99SLinus Walleij "BATT_REMOVED", 142c5b64a99SLinus Walleij "WD_EXPIRED_INIT", 143c5b64a99SLinus Walleij "WD_EXPIRED", 144c5b64a99SLinus Walleij }; 145c5b64a99SLinus Walleij 146c5b64a99SLinus Walleij struct ab8500_chargalg_events { 147c5b64a99SLinus Walleij bool batt_unknown; 148c5b64a99SLinus Walleij bool mainextchnotok; 149c5b64a99SLinus Walleij bool batt_ovv; 150c5b64a99SLinus Walleij bool batt_rem; 151c5b64a99SLinus Walleij bool btemp_underover; 152c5b64a99SLinus Walleij bool btemp_lowhigh; 153c5b64a99SLinus Walleij bool main_thermal_prot; 154c5b64a99SLinus Walleij bool usb_thermal_prot; 155c5b64a99SLinus Walleij bool main_ovv; 156c5b64a99SLinus Walleij bool vbus_ovv; 157c5b64a99SLinus Walleij bool usbchargernotok; 158c5b64a99SLinus Walleij bool safety_timer_expired; 159c5b64a99SLinus Walleij bool maintenance_timer_expired; 160c5b64a99SLinus Walleij bool ac_wd_expired; 161c5b64a99SLinus Walleij bool usb_wd_expired; 162c5b64a99SLinus Walleij bool ac_cv_active; 163c5b64a99SLinus Walleij bool usb_cv_active; 164c5b64a99SLinus Walleij bool vbus_collapsed; 165c5b64a99SLinus Walleij }; 166c5b64a99SLinus Walleij 167c5b64a99SLinus Walleij /** 168c5b64a99SLinus Walleij * struct ab8500_charge_curr_maximization - Charger maximization parameters 16983e5aa77SLinus Walleij * @original_iset_ua: the non optimized/maximised charger current 17083e5aa77SLinus Walleij * @current_iset_ua: the charging current used at this moment 171c5b64a99SLinus Walleij * @condition_cnt: number of iterations needed before a new charger current 172c5b64a99SLinus Walleij is set 17383e5aa77SLinus Walleij * @max_current_ua: maximum charger current 174c5b64a99SLinus Walleij * @wait_cnt: to avoid too fast current step down in case of charger 175c5b64a99SLinus Walleij * voltage collapse, we insert this delay between step 176c5b64a99SLinus Walleij * down 177c5b64a99SLinus Walleij * @level: tells in how many steps the charging current has been 178c5b64a99SLinus Walleij increased 179c5b64a99SLinus Walleij */ 180c5b64a99SLinus Walleij struct ab8500_charge_curr_maximization { 18183e5aa77SLinus Walleij int original_iset_ua; 18283e5aa77SLinus Walleij int current_iset_ua; 183c5b64a99SLinus Walleij int condition_cnt; 18483e5aa77SLinus Walleij int max_current_ua; 185c5b64a99SLinus Walleij int wait_cnt; 186c5b64a99SLinus Walleij u8 level; 187c5b64a99SLinus Walleij }; 188c5b64a99SLinus Walleij 189c5b64a99SLinus Walleij enum maxim_ret { 190c5b64a99SLinus Walleij MAXIM_RET_NOACTION, 191c5b64a99SLinus Walleij MAXIM_RET_CHANGE, 192c5b64a99SLinus Walleij MAXIM_RET_IBAT_TOO_HIGH, 193c5b64a99SLinus Walleij }; 194c5b64a99SLinus Walleij 195c5b64a99SLinus Walleij /** 196c5b64a99SLinus Walleij * struct ab8500_chargalg - ab8500 Charging algorithm device information 197c5b64a99SLinus Walleij * @dev: pointer to the structure device 198c5b64a99SLinus Walleij * @charge_status: battery operating status 199c5b64a99SLinus Walleij * @eoc_cnt: counter used to determine end-of_charge 200c5b64a99SLinus Walleij * @maintenance_chg: indicate if maintenance charge is active 201c5b64a99SLinus Walleij * @t_hyst_norm temperature hysteresis when the temperature has been 202c5b64a99SLinus Walleij * over or under normal limits 203c5b64a99SLinus Walleij * @t_hyst_lowhigh temperature hysteresis when the temperature has been 204c5b64a99SLinus Walleij * over or under the high or low limits 205c5b64a99SLinus Walleij * @charge_state: current state of the charging algorithm 206c5b64a99SLinus Walleij * @ccm charging current maximization parameters 207c5b64a99SLinus Walleij * @chg_info: information about connected charger types 208c5b64a99SLinus Walleij * @batt_data: data of the battery 209c5b64a99SLinus Walleij * @bm: Platform specific battery management information 210c5b64a99SLinus Walleij * @parent: pointer to the struct ab8500 211c5b64a99SLinus Walleij * @chargalg_psy: structure that holds the battery properties exposed by 212c5b64a99SLinus Walleij * the charging algorithm 213c5b64a99SLinus Walleij * @events: structure for information about events triggered 214c5b64a99SLinus Walleij * @chargalg_wq: work queue for running the charging algorithm 215c5b64a99SLinus Walleij * @chargalg_periodic_work: work to run the charging algorithm periodically 216c5b64a99SLinus Walleij * @chargalg_wd_work: work to kick the charger watchdog periodically 217c5b64a99SLinus Walleij * @chargalg_work: work to run the charging algorithm instantly 218c5b64a99SLinus Walleij * @safety_timer: charging safety timer 219c5b64a99SLinus Walleij * @maintenance_timer: maintenance charging timer 220c5b64a99SLinus Walleij * @chargalg_kobject: structure of type kobject 221c5b64a99SLinus Walleij */ 222c5b64a99SLinus Walleij struct ab8500_chargalg { 223c5b64a99SLinus Walleij struct device *dev; 224c5b64a99SLinus Walleij int charge_status; 225c5b64a99SLinus Walleij int eoc_cnt; 226c5b64a99SLinus Walleij bool maintenance_chg; 227c5b64a99SLinus Walleij int t_hyst_norm; 228c5b64a99SLinus Walleij int t_hyst_lowhigh; 229c5b64a99SLinus Walleij enum ab8500_chargalg_states charge_state; 230c5b64a99SLinus Walleij struct ab8500_charge_curr_maximization ccm; 231c5b64a99SLinus Walleij struct ab8500_chargalg_charger_info chg_info; 232c5b64a99SLinus Walleij struct ab8500_chargalg_battery_data batt_data; 233c5b64a99SLinus Walleij struct ab8500 *parent; 234484a9cc3SLinus Walleij struct ab8500_bm_data *bm; 235c5b64a99SLinus Walleij struct power_supply *chargalg_psy; 236c5b64a99SLinus Walleij struct ux500_charger *ac_chg; 237c5b64a99SLinus Walleij struct ux500_charger *usb_chg; 238c5b64a99SLinus Walleij struct ab8500_chargalg_events events; 239c5b64a99SLinus Walleij struct workqueue_struct *chargalg_wq; 240c5b64a99SLinus Walleij struct delayed_work chargalg_periodic_work; 241c5b64a99SLinus Walleij struct delayed_work chargalg_wd_work; 242c5b64a99SLinus Walleij struct work_struct chargalg_work; 243c5b64a99SLinus Walleij struct hrtimer safety_timer; 244c5b64a99SLinus Walleij struct hrtimer maintenance_timer; 245c5b64a99SLinus Walleij struct kobject chargalg_kobject; 246c5b64a99SLinus Walleij }; 247c5b64a99SLinus Walleij 248c5b64a99SLinus Walleij /*External charger prepare notifier*/ 249c5b64a99SLinus Walleij BLOCKING_NOTIFIER_HEAD(charger_notifier_list); 250c5b64a99SLinus Walleij 251c5b64a99SLinus Walleij /* Main battery properties */ 252c5b64a99SLinus Walleij static enum power_supply_property ab8500_chargalg_props[] = { 253c5b64a99SLinus Walleij POWER_SUPPLY_PROP_STATUS, 254c5b64a99SLinus Walleij POWER_SUPPLY_PROP_HEALTH, 255c5b64a99SLinus Walleij }; 256c5b64a99SLinus Walleij 257c5b64a99SLinus Walleij struct ab8500_chargalg_sysfs_entry { 258c5b64a99SLinus Walleij struct attribute attr; 25938334231SColin Ian King ssize_t (*show)(struct ab8500_chargalg *di, char *buf); 26038334231SColin Ian King ssize_t (*store)(struct ab8500_chargalg *di, const char *buf, size_t length); 261c5b64a99SLinus Walleij }; 262c5b64a99SLinus Walleij 263c5b64a99SLinus Walleij /** 264c5b64a99SLinus Walleij * ab8500_chargalg_safety_timer_expired() - Expiration of the safety timer 265c5b64a99SLinus Walleij * @timer: pointer to the hrtimer structure 266c5b64a99SLinus Walleij * 267c5b64a99SLinus Walleij * This function gets called when the safety timer for the charger 268c5b64a99SLinus Walleij * expires 269c5b64a99SLinus Walleij */ 270c5b64a99SLinus Walleij static enum hrtimer_restart 271c5b64a99SLinus Walleij ab8500_chargalg_safety_timer_expired(struct hrtimer *timer) 272c5b64a99SLinus Walleij { 273c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(timer, struct ab8500_chargalg, 274c5b64a99SLinus Walleij safety_timer); 275c5b64a99SLinus Walleij dev_err(di->dev, "Safety timer expired\n"); 276c5b64a99SLinus Walleij di->events.safety_timer_expired = true; 277c5b64a99SLinus Walleij 278c5b64a99SLinus Walleij /* Trigger execution of the algorithm instantly */ 279c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 280c5b64a99SLinus Walleij 281c5b64a99SLinus Walleij return HRTIMER_NORESTART; 282c5b64a99SLinus Walleij } 283c5b64a99SLinus Walleij 284c5b64a99SLinus Walleij /** 285c5b64a99SLinus Walleij * ab8500_chargalg_maintenance_timer_expired() - Expiration of 286c5b64a99SLinus Walleij * the maintenance timer 287c5b64a99SLinus Walleij * @timer: pointer to the timer structure 288c5b64a99SLinus Walleij * 289c5b64a99SLinus Walleij * This function gets called when the maintenence timer 290c5b64a99SLinus Walleij * expires 291c5b64a99SLinus Walleij */ 292c5b64a99SLinus Walleij static enum hrtimer_restart 293c5b64a99SLinus Walleij ab8500_chargalg_maintenance_timer_expired(struct hrtimer *timer) 294c5b64a99SLinus Walleij { 295c5b64a99SLinus Walleij 296c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(timer, struct ab8500_chargalg, 297c5b64a99SLinus Walleij maintenance_timer); 298c5b64a99SLinus Walleij 299c5b64a99SLinus Walleij dev_dbg(di->dev, "Maintenance timer expired\n"); 300c5b64a99SLinus Walleij di->events.maintenance_timer_expired = true; 301c5b64a99SLinus Walleij 302c5b64a99SLinus Walleij /* Trigger execution of the algorithm instantly */ 303c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 304c5b64a99SLinus Walleij 305c5b64a99SLinus Walleij return HRTIMER_NORESTART; 306c5b64a99SLinus Walleij } 307c5b64a99SLinus Walleij 308c5b64a99SLinus Walleij /** 309c5b64a99SLinus Walleij * ab8500_chargalg_state_to() - Change charge state 310c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 311c5b64a99SLinus Walleij * 312c5b64a99SLinus Walleij * This function gets called when a charge state change should occur 313c5b64a99SLinus Walleij */ 314c5b64a99SLinus Walleij static void ab8500_chargalg_state_to(struct ab8500_chargalg *di, 315c5b64a99SLinus Walleij enum ab8500_chargalg_states state) 316c5b64a99SLinus Walleij { 317c5b64a99SLinus Walleij dev_dbg(di->dev, 318c5b64a99SLinus Walleij "State changed: %s (From state: [%d] %s =to=> [%d] %s )\n", 319c5b64a99SLinus Walleij di->charge_state == state ? "NO" : "YES", 320c5b64a99SLinus Walleij di->charge_state, 321c5b64a99SLinus Walleij states[di->charge_state], 322c5b64a99SLinus Walleij state, 323c5b64a99SLinus Walleij states[state]); 324c5b64a99SLinus Walleij 325c5b64a99SLinus Walleij di->charge_state = state; 326c5b64a99SLinus Walleij } 327c5b64a99SLinus Walleij 328c5b64a99SLinus Walleij static int ab8500_chargalg_check_charger_enable(struct ab8500_chargalg *di) 329c5b64a99SLinus Walleij { 33025fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 33183e5aa77SLinus Walleij 332c5b64a99SLinus Walleij switch (di->charge_state) { 333c5b64a99SLinus Walleij case STATE_NORMAL: 334c5b64a99SLinus Walleij case STATE_MAINTENANCE_A: 335c5b64a99SLinus Walleij case STATE_MAINTENANCE_B: 336c5b64a99SLinus Walleij break; 337c5b64a99SLinus Walleij default: 338c5b64a99SLinus Walleij return 0; 339c5b64a99SLinus Walleij } 340c5b64a99SLinus Walleij 341c5b64a99SLinus Walleij if (di->chg_info.charger_type & USB_CHG) { 342c5b64a99SLinus Walleij return di->usb_chg->ops.check_enable(di->usb_chg, 343bc6e0287SLinus Walleij bi->constant_charge_voltage_max_uv, 34483e5aa77SLinus Walleij bi->constant_charge_current_max_ua); 345c5b64a99SLinus Walleij } else if ((di->chg_info.charger_type & AC_CHG) && 346c5b64a99SLinus Walleij !(di->ac_chg->external)) { 347c5b64a99SLinus Walleij return di->ac_chg->ops.check_enable(di->ac_chg, 348bc6e0287SLinus Walleij bi->constant_charge_voltage_max_uv, 34983e5aa77SLinus Walleij bi->constant_charge_current_max_ua); 350c5b64a99SLinus Walleij } 351c5b64a99SLinus Walleij return 0; 352c5b64a99SLinus Walleij } 353c5b64a99SLinus Walleij 354c5b64a99SLinus Walleij /** 355c5b64a99SLinus Walleij * ab8500_chargalg_check_charger_connection() - Check charger connection change 356c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 357c5b64a99SLinus Walleij * 358c5b64a99SLinus Walleij * This function will check if there is a change in the charger connection 359c5b64a99SLinus Walleij * and change charge state accordingly. AC has precedence over USB. 360c5b64a99SLinus Walleij */ 361c5b64a99SLinus Walleij static int ab8500_chargalg_check_charger_connection(struct ab8500_chargalg *di) 362c5b64a99SLinus Walleij { 363*75ee3f6fSLinus Walleij if (di->chg_info.conn_chg != di->chg_info.prev_conn_chg) { 364*75ee3f6fSLinus Walleij /* Charger state changed since last update */ 365*75ee3f6fSLinus Walleij if (di->chg_info.conn_chg & AC_CHG) { 366*75ee3f6fSLinus Walleij dev_info(di->dev, "Charging source is AC\n"); 367c5b64a99SLinus Walleij if (di->chg_info.charger_type != AC_CHG) { 368c5b64a99SLinus Walleij di->chg_info.charger_type = AC_CHG; 369c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 370c5b64a99SLinus Walleij } 371*75ee3f6fSLinus Walleij } else if (di->chg_info.conn_chg & USB_CHG) { 372*75ee3f6fSLinus Walleij dev_info(di->dev, "Charging source is USB\n"); 373c5b64a99SLinus Walleij di->chg_info.charger_type = USB_CHG; 374c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 375c5b64a99SLinus Walleij } else { 376c5b64a99SLinus Walleij dev_dbg(di->dev, "Charging source is OFF\n"); 377c5b64a99SLinus Walleij di->chg_info.charger_type = NO_CHG; 378c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_HANDHELD_INIT); 379c5b64a99SLinus Walleij } 380c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = di->chg_info.conn_chg; 381c5b64a99SLinus Walleij } 382c5b64a99SLinus Walleij return di->chg_info.conn_chg; 383c5b64a99SLinus Walleij } 384c5b64a99SLinus Walleij 385c5b64a99SLinus Walleij /** 386c5b64a99SLinus Walleij * ab8500_chargalg_start_safety_timer() - Start charging safety timer 387c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 388c5b64a99SLinus Walleij * 389c5b64a99SLinus Walleij * The safety timer is used to avoid overcharging of old or bad batteries. 390c5b64a99SLinus Walleij * There are different timers for AC and USB 391c5b64a99SLinus Walleij */ 392c5b64a99SLinus Walleij static void ab8500_chargalg_start_safety_timer(struct ab8500_chargalg *di) 393c5b64a99SLinus Walleij { 394c5b64a99SLinus Walleij /* Charger-dependent expiration time in hours*/ 395c5b64a99SLinus Walleij int timer_expiration = 0; 396c5b64a99SLinus Walleij 397c5b64a99SLinus Walleij switch (di->chg_info.charger_type) { 398c5b64a99SLinus Walleij case AC_CHG: 399c5b64a99SLinus Walleij timer_expiration = di->bm->main_safety_tmr_h; 400c5b64a99SLinus Walleij break; 401c5b64a99SLinus Walleij 402c5b64a99SLinus Walleij case USB_CHG: 403c5b64a99SLinus Walleij timer_expiration = di->bm->usb_safety_tmr_h; 404c5b64a99SLinus Walleij break; 405c5b64a99SLinus Walleij 406c5b64a99SLinus Walleij default: 407c5b64a99SLinus Walleij dev_err(di->dev, "Unknown charger to charge from\n"); 408c5b64a99SLinus Walleij break; 409c5b64a99SLinus Walleij } 410c5b64a99SLinus Walleij 411c5b64a99SLinus Walleij di->events.safety_timer_expired = false; 412c5b64a99SLinus Walleij hrtimer_set_expires_range(&di->safety_timer, 413c5b64a99SLinus Walleij ktime_set(timer_expiration * ONE_HOUR_IN_SECONDS, 0), 414c5b64a99SLinus Walleij ktime_set(FIVE_MINUTES_IN_SECONDS, 0)); 415c5b64a99SLinus Walleij hrtimer_start_expires(&di->safety_timer, HRTIMER_MODE_REL); 416c5b64a99SLinus Walleij } 417c5b64a99SLinus Walleij 418c5b64a99SLinus Walleij /** 419c5b64a99SLinus Walleij * ab8500_chargalg_stop_safety_timer() - Stop charging safety timer 420c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 421c5b64a99SLinus Walleij * 422c5b64a99SLinus Walleij * The safety timer is stopped whenever the NORMAL state is exited 423c5b64a99SLinus Walleij */ 424c5b64a99SLinus Walleij static void ab8500_chargalg_stop_safety_timer(struct ab8500_chargalg *di) 425c5b64a99SLinus Walleij { 426c5b64a99SLinus Walleij if (hrtimer_try_to_cancel(&di->safety_timer) >= 0) 427c5b64a99SLinus Walleij di->events.safety_timer_expired = false; 428c5b64a99SLinus Walleij } 429c5b64a99SLinus Walleij 430c5b64a99SLinus Walleij /** 431c5b64a99SLinus Walleij * ab8500_chargalg_start_maintenance_timer() - Start charging maintenance timer 432c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 433c5b64a99SLinus Walleij * @duration: duration of ther maintenance timer in hours 434c5b64a99SLinus Walleij * 435c5b64a99SLinus Walleij * The maintenance timer is used to maintain the charge in the battery once 436c5b64a99SLinus Walleij * the battery is considered full. These timers are chosen to match the 437c5b64a99SLinus Walleij * discharge curve of the battery 438c5b64a99SLinus Walleij */ 439c5b64a99SLinus Walleij static void ab8500_chargalg_start_maintenance_timer(struct ab8500_chargalg *di, 440c5b64a99SLinus Walleij int duration) 441c5b64a99SLinus Walleij { 442c5b64a99SLinus Walleij hrtimer_set_expires_range(&di->maintenance_timer, 443c5b64a99SLinus Walleij ktime_set(duration * ONE_HOUR_IN_SECONDS, 0), 444c5b64a99SLinus Walleij ktime_set(FIVE_MINUTES_IN_SECONDS, 0)); 445c5b64a99SLinus Walleij di->events.maintenance_timer_expired = false; 446c5b64a99SLinus Walleij hrtimer_start_expires(&di->maintenance_timer, HRTIMER_MODE_REL); 447c5b64a99SLinus Walleij } 448c5b64a99SLinus Walleij 449c5b64a99SLinus Walleij /** 450c5b64a99SLinus Walleij * ab8500_chargalg_stop_maintenance_timer() - Stop maintenance timer 451c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 452c5b64a99SLinus Walleij * 453c5b64a99SLinus Walleij * The maintenance timer is stopped whenever maintenance ends or when another 454c5b64a99SLinus Walleij * state is entered 455c5b64a99SLinus Walleij */ 456c5b64a99SLinus Walleij static void ab8500_chargalg_stop_maintenance_timer(struct ab8500_chargalg *di) 457c5b64a99SLinus Walleij { 458c5b64a99SLinus Walleij if (hrtimer_try_to_cancel(&di->maintenance_timer) >= 0) 459c5b64a99SLinus Walleij di->events.maintenance_timer_expired = false; 460c5b64a99SLinus Walleij } 461c5b64a99SLinus Walleij 462c5b64a99SLinus Walleij /** 463c5b64a99SLinus Walleij * ab8500_chargalg_kick_watchdog() - Kick charger watchdog 464c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 465c5b64a99SLinus Walleij * 466c5b64a99SLinus Walleij * The charger watchdog have to be kicked periodically whenever the charger is 467c5b64a99SLinus Walleij * on, else the ABB will reset the system 468c5b64a99SLinus Walleij */ 469c5b64a99SLinus Walleij static int ab8500_chargalg_kick_watchdog(struct ab8500_chargalg *di) 470c5b64a99SLinus Walleij { 471c5b64a99SLinus Walleij /* Check if charger exists and kick watchdog if charging */ 472c5b64a99SLinus Walleij if (di->ac_chg && di->ac_chg->ops.kick_wd && 473c5b64a99SLinus Walleij di->chg_info.online_chg & AC_CHG) { 474c5b64a99SLinus Walleij /* 475c5b64a99SLinus Walleij * If AB charger watchdog expired, pm2xxx charging 476c5b64a99SLinus Walleij * gets disabled. To be safe, kick both AB charger watchdog 477c5b64a99SLinus Walleij * and pm2xxx watchdog. 478c5b64a99SLinus Walleij */ 479c5b64a99SLinus Walleij if (di->ac_chg->external && 480c5b64a99SLinus Walleij di->usb_chg && di->usb_chg->ops.kick_wd) 481c5b64a99SLinus Walleij di->usb_chg->ops.kick_wd(di->usb_chg); 482c5b64a99SLinus Walleij 483c5b64a99SLinus Walleij return di->ac_chg->ops.kick_wd(di->ac_chg); 48438334231SColin Ian King } else if (di->usb_chg && di->usb_chg->ops.kick_wd && 485c5b64a99SLinus Walleij di->chg_info.online_chg & USB_CHG) 486c5b64a99SLinus Walleij return di->usb_chg->ops.kick_wd(di->usb_chg); 487c5b64a99SLinus Walleij 488c5b64a99SLinus Walleij return -ENXIO; 489c5b64a99SLinus Walleij } 490c5b64a99SLinus Walleij 491c5b64a99SLinus Walleij /** 492c5b64a99SLinus Walleij * ab8500_chargalg_ac_en() - Turn on/off the AC charger 493c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 494c5b64a99SLinus Walleij * @enable: charger on/off 495bc6e0287SLinus Walleij * @vset_uv: requested charger output voltage in microvolt 49683e5aa77SLinus Walleij * @iset_ua: requested charger output current in microampere 497c5b64a99SLinus Walleij * 498c5b64a99SLinus Walleij * The AC charger will be turned on/off with the requested charge voltage and 499c5b64a99SLinus Walleij * current 500c5b64a99SLinus Walleij */ 501c5b64a99SLinus Walleij static int ab8500_chargalg_ac_en(struct ab8500_chargalg *di, int enable, 502bc6e0287SLinus Walleij int vset_uv, int iset_ua) 503c5b64a99SLinus Walleij { 504c5b64a99SLinus Walleij static int ab8500_chargalg_ex_ac_enable_toggle; 505c5b64a99SLinus Walleij 506c5b64a99SLinus Walleij if (!di->ac_chg || !di->ac_chg->ops.enable) 507c5b64a99SLinus Walleij return -ENXIO; 508c5b64a99SLinus Walleij 509c5b64a99SLinus Walleij /* Select maximum of what both the charger and the battery supports */ 510bc6e0287SLinus Walleij if (di->ac_chg->max_out_volt_uv) 511bc6e0287SLinus Walleij vset_uv = min(vset_uv, di->ac_chg->max_out_volt_uv); 51283e5aa77SLinus Walleij if (di->ac_chg->max_out_curr_ua) 51383e5aa77SLinus Walleij iset_ua = min(iset_ua, di->ac_chg->max_out_curr_ua); 514c5b64a99SLinus Walleij 51583e5aa77SLinus Walleij di->chg_info.ac_iset_ua = iset_ua; 516bc6e0287SLinus Walleij di->chg_info.ac_vset_uv = vset_uv; 517c5b64a99SLinus Walleij 518c5b64a99SLinus Walleij /* Enable external charger */ 519c5b64a99SLinus Walleij if (enable && di->ac_chg->external && 520c5b64a99SLinus Walleij !ab8500_chargalg_ex_ac_enable_toggle) { 521c5b64a99SLinus Walleij blocking_notifier_call_chain(&charger_notifier_list, 522c5b64a99SLinus Walleij 0, di->dev); 523c5b64a99SLinus Walleij ab8500_chargalg_ex_ac_enable_toggle++; 524c5b64a99SLinus Walleij } 525c5b64a99SLinus Walleij 526bc6e0287SLinus Walleij return di->ac_chg->ops.enable(di->ac_chg, enable, vset_uv, iset_ua); 527c5b64a99SLinus Walleij } 528c5b64a99SLinus Walleij 529c5b64a99SLinus Walleij /** 530c5b64a99SLinus Walleij * ab8500_chargalg_usb_en() - Turn on/off the USB charger 531c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 532c5b64a99SLinus Walleij * @enable: charger on/off 533bc6e0287SLinus Walleij * @vset_uv: requested charger output voltage in microvolt 53483e5aa77SLinus Walleij * @iset_ua: requested charger output current in microampere 535c5b64a99SLinus Walleij * 536c5b64a99SLinus Walleij * The USB charger will be turned on/off with the requested charge voltage and 537c5b64a99SLinus Walleij * current 538c5b64a99SLinus Walleij */ 539c5b64a99SLinus Walleij static int ab8500_chargalg_usb_en(struct ab8500_chargalg *di, int enable, 540bc6e0287SLinus Walleij int vset_uv, int iset_ua) 541c5b64a99SLinus Walleij { 542c5b64a99SLinus Walleij if (!di->usb_chg || !di->usb_chg->ops.enable) 543c5b64a99SLinus Walleij return -ENXIO; 544c5b64a99SLinus Walleij 545c5b64a99SLinus Walleij /* Select maximum of what both the charger and the battery supports */ 546bc6e0287SLinus Walleij if (di->usb_chg->max_out_volt_uv) 547bc6e0287SLinus Walleij vset_uv = min(vset_uv, di->usb_chg->max_out_volt_uv); 54883e5aa77SLinus Walleij if (di->usb_chg->max_out_curr_ua) 54983e5aa77SLinus Walleij iset_ua = min(iset_ua, di->usb_chg->max_out_curr_ua); 550c5b64a99SLinus Walleij 55183e5aa77SLinus Walleij di->chg_info.usb_iset_ua = iset_ua; 552bc6e0287SLinus Walleij di->chg_info.usb_vset_uv = vset_uv; 553c5b64a99SLinus Walleij 554bc6e0287SLinus Walleij return di->usb_chg->ops.enable(di->usb_chg, enable, vset_uv, iset_ua); 555c5b64a99SLinus Walleij } 556c5b64a99SLinus Walleij 557c5b64a99SLinus Walleij /** 558c5b64a99SLinus Walleij * ab8500_chargalg_update_chg_curr() - Update charger current 559c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 56083e5aa77SLinus Walleij * @iset_ua: requested charger output current in microampere 561c5b64a99SLinus Walleij * 562c5b64a99SLinus Walleij * The charger output current will be updated for the charger 563c5b64a99SLinus Walleij * that is currently in use 564c5b64a99SLinus Walleij */ 565c5b64a99SLinus Walleij static int ab8500_chargalg_update_chg_curr(struct ab8500_chargalg *di, 56683e5aa77SLinus Walleij int iset_ua) 567c5b64a99SLinus Walleij { 568c5b64a99SLinus Walleij /* Check if charger exists and update current if charging */ 569c5b64a99SLinus Walleij if (di->ac_chg && di->ac_chg->ops.update_curr && 570c5b64a99SLinus Walleij di->chg_info.charger_type & AC_CHG) { 571c5b64a99SLinus Walleij /* 572c5b64a99SLinus Walleij * Select maximum of what both the charger 573c5b64a99SLinus Walleij * and the battery supports 574c5b64a99SLinus Walleij */ 57583e5aa77SLinus Walleij if (di->ac_chg->max_out_curr_ua) 57683e5aa77SLinus Walleij iset_ua = min(iset_ua, di->ac_chg->max_out_curr_ua); 577c5b64a99SLinus Walleij 57883e5aa77SLinus Walleij di->chg_info.ac_iset_ua = iset_ua; 579c5b64a99SLinus Walleij 58083e5aa77SLinus Walleij return di->ac_chg->ops.update_curr(di->ac_chg, iset_ua); 581c5b64a99SLinus Walleij } else if (di->usb_chg && di->usb_chg->ops.update_curr && 582c5b64a99SLinus Walleij di->chg_info.charger_type & USB_CHG) { 583c5b64a99SLinus Walleij /* 584c5b64a99SLinus Walleij * Select maximum of what both the charger 585c5b64a99SLinus Walleij * and the battery supports 586c5b64a99SLinus Walleij */ 58783e5aa77SLinus Walleij if (di->usb_chg->max_out_curr_ua) 58883e5aa77SLinus Walleij iset_ua = min(iset_ua, di->usb_chg->max_out_curr_ua); 589c5b64a99SLinus Walleij 59083e5aa77SLinus Walleij di->chg_info.usb_iset_ua = iset_ua; 591c5b64a99SLinus Walleij 59283e5aa77SLinus Walleij return di->usb_chg->ops.update_curr(di->usb_chg, iset_ua); 593c5b64a99SLinus Walleij } 594c5b64a99SLinus Walleij 595c5b64a99SLinus Walleij return -ENXIO; 596c5b64a99SLinus Walleij } 597c5b64a99SLinus Walleij 598c5b64a99SLinus Walleij /** 599c5b64a99SLinus Walleij * ab8500_chargalg_stop_charging() - Stop charging 600c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 601c5b64a99SLinus Walleij * 602c5b64a99SLinus Walleij * This function is called from any state where charging should be stopped. 603c5b64a99SLinus Walleij * All charging is disabled and all status parameters and timers are changed 604c5b64a99SLinus Walleij * accordingly 605c5b64a99SLinus Walleij */ 606c5b64a99SLinus Walleij static void ab8500_chargalg_stop_charging(struct ab8500_chargalg *di) 607c5b64a99SLinus Walleij { 608c5b64a99SLinus Walleij ab8500_chargalg_ac_en(di, false, 0, 0); 609c5b64a99SLinus Walleij ab8500_chargalg_usb_en(di, false, 0, 0); 610c5b64a99SLinus Walleij ab8500_chargalg_stop_safety_timer(di); 611c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 612c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING; 613c5b64a99SLinus Walleij di->maintenance_chg = false; 614c5b64a99SLinus Walleij cancel_delayed_work(&di->chargalg_wd_work); 615c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 616c5b64a99SLinus Walleij } 617c5b64a99SLinus Walleij 618c5b64a99SLinus Walleij /** 619c5b64a99SLinus Walleij * ab8500_chargalg_hold_charging() - Pauses charging 620c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 621c5b64a99SLinus Walleij * 622c5b64a99SLinus Walleij * This function is called in the case where maintenance charging has been 623c5b64a99SLinus Walleij * disabled and instead a battery voltage mode is entered to check when the 624c5b64a99SLinus Walleij * battery voltage has reached a certain recharge voltage 625c5b64a99SLinus Walleij */ 626c5b64a99SLinus Walleij static void ab8500_chargalg_hold_charging(struct ab8500_chargalg *di) 627c5b64a99SLinus Walleij { 628c5b64a99SLinus Walleij ab8500_chargalg_ac_en(di, false, 0, 0); 629c5b64a99SLinus Walleij ab8500_chargalg_usb_en(di, false, 0, 0); 630c5b64a99SLinus Walleij ab8500_chargalg_stop_safety_timer(di); 631c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 632c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_CHARGING; 633c5b64a99SLinus Walleij di->maintenance_chg = false; 634c5b64a99SLinus Walleij cancel_delayed_work(&di->chargalg_wd_work); 635c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 636c5b64a99SLinus Walleij } 637c5b64a99SLinus Walleij 638c5b64a99SLinus Walleij /** 639c5b64a99SLinus Walleij * ab8500_chargalg_start_charging() - Start the charger 640c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 641bc6e0287SLinus Walleij * @vset_uv: requested charger output voltage in microvolt 64283e5aa77SLinus Walleij * @iset_ua: requested charger output current in microampere 643c5b64a99SLinus Walleij * 644c5b64a99SLinus Walleij * A charger will be enabled depending on the requested charger type that was 645c5b64a99SLinus Walleij * detected previously. 646c5b64a99SLinus Walleij */ 647c5b64a99SLinus Walleij static void ab8500_chargalg_start_charging(struct ab8500_chargalg *di, 648bc6e0287SLinus Walleij int vset_uv, int iset_ua) 649c5b64a99SLinus Walleij { 650c5b64a99SLinus Walleij switch (di->chg_info.charger_type) { 651c5b64a99SLinus Walleij case AC_CHG: 652c5b64a99SLinus Walleij dev_dbg(di->dev, 653bc6e0287SLinus Walleij "AC parameters: Vset %d, Ich %d\n", vset_uv, iset_ua); 654c5b64a99SLinus Walleij ab8500_chargalg_usb_en(di, false, 0, 0); 655bc6e0287SLinus Walleij ab8500_chargalg_ac_en(di, true, vset_uv, iset_ua); 656c5b64a99SLinus Walleij break; 657c5b64a99SLinus Walleij 658c5b64a99SLinus Walleij case USB_CHG: 659c5b64a99SLinus Walleij dev_dbg(di->dev, 660bc6e0287SLinus Walleij "USB parameters: Vset %d, Ich %d\n", vset_uv, iset_ua); 661c5b64a99SLinus Walleij ab8500_chargalg_ac_en(di, false, 0, 0); 662bc6e0287SLinus Walleij ab8500_chargalg_usb_en(di, true, vset_uv, iset_ua); 663c5b64a99SLinus Walleij break; 664c5b64a99SLinus Walleij 665c5b64a99SLinus Walleij default: 666c5b64a99SLinus Walleij dev_err(di->dev, "Unknown charger to charge from\n"); 667c5b64a99SLinus Walleij break; 668c5b64a99SLinus Walleij } 669c5b64a99SLinus Walleij } 670c5b64a99SLinus Walleij 671c5b64a99SLinus Walleij /** 672c5b64a99SLinus Walleij * ab8500_chargalg_check_temp() - Check battery temperature ranges 673c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 674c5b64a99SLinus Walleij * 675c5b64a99SLinus Walleij * The battery temperature is checked against the predefined limits and the 676c5b64a99SLinus Walleij * charge state is changed accordingly 677c5b64a99SLinus Walleij */ 678c5b64a99SLinus Walleij static void ab8500_chargalg_check_temp(struct ab8500_chargalg *di) 679c5b64a99SLinus Walleij { 68025fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 6816252c706SLinus Walleij 6826252c706SLinus Walleij if (di->batt_data.temp > (bi->temp_alert_min + di->t_hyst_norm) && 6836252c706SLinus Walleij di->batt_data.temp < (bi->temp_alert_max - di->t_hyst_norm)) { 684c5b64a99SLinus Walleij /* Temp OK! */ 685c5b64a99SLinus Walleij di->events.btemp_underover = false; 686c5b64a99SLinus Walleij di->events.btemp_lowhigh = false; 687c5b64a99SLinus Walleij di->t_hyst_norm = 0; 688c5b64a99SLinus Walleij di->t_hyst_lowhigh = 0; 689c5b64a99SLinus Walleij } else { 6906252c706SLinus Walleij if (((di->batt_data.temp >= bi->temp_alert_max) && 691c5b64a99SLinus Walleij (di->batt_data.temp < 6926252c706SLinus Walleij (bi->temp_max - di->t_hyst_lowhigh))) || 693c5b64a99SLinus Walleij ((di->batt_data.temp > 6946252c706SLinus Walleij (bi->temp_min + di->t_hyst_lowhigh)) && 6956252c706SLinus Walleij (di->batt_data.temp <= bi->temp_alert_min))) { 696c5b64a99SLinus Walleij /* TEMP minor!!!!! */ 697c5b64a99SLinus Walleij di->events.btemp_underover = false; 698c5b64a99SLinus Walleij di->events.btemp_lowhigh = true; 699c5b64a99SLinus Walleij di->t_hyst_norm = di->bm->temp_hysteresis; 700c5b64a99SLinus Walleij di->t_hyst_lowhigh = 0; 7016252c706SLinus Walleij } else if (di->batt_data.temp <= bi->temp_min || 7026252c706SLinus Walleij di->batt_data.temp >= bi->temp_max) { 703c5b64a99SLinus Walleij /* TEMP major!!!!! */ 704c5b64a99SLinus Walleij di->events.btemp_underover = true; 705c5b64a99SLinus Walleij di->events.btemp_lowhigh = false; 706c5b64a99SLinus Walleij di->t_hyst_norm = 0; 707c5b64a99SLinus Walleij di->t_hyst_lowhigh = di->bm->temp_hysteresis; 708c5b64a99SLinus Walleij } else { 709c5b64a99SLinus Walleij /* Within hysteresis */ 710c5b64a99SLinus Walleij dev_dbg(di->dev, "Within hysteresis limit temp: %d " 711c5b64a99SLinus Walleij "hyst_lowhigh %d, hyst normal %d\n", 712c5b64a99SLinus Walleij di->batt_data.temp, di->t_hyst_lowhigh, 713c5b64a99SLinus Walleij di->t_hyst_norm); 714c5b64a99SLinus Walleij } 715c5b64a99SLinus Walleij } 716c5b64a99SLinus Walleij } 717c5b64a99SLinus Walleij 718c5b64a99SLinus Walleij /** 719c5b64a99SLinus Walleij * ab8500_chargalg_check_charger_voltage() - Check charger voltage 720c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 721c5b64a99SLinus Walleij * 722c5b64a99SLinus Walleij * Charger voltage is checked against maximum limit 723c5b64a99SLinus Walleij */ 724c5b64a99SLinus Walleij static void ab8500_chargalg_check_charger_voltage(struct ab8500_chargalg *di) 725c5b64a99SLinus Walleij { 726bc6e0287SLinus Walleij if (di->chg_info.usb_volt_uv > di->bm->chg_params->usb_volt_max_uv) 727c5b64a99SLinus Walleij di->chg_info.usb_chg_ok = false; 728c5b64a99SLinus Walleij else 729c5b64a99SLinus Walleij di->chg_info.usb_chg_ok = true; 730c5b64a99SLinus Walleij 731bc6e0287SLinus Walleij if (di->chg_info.ac_volt_uv > di->bm->chg_params->ac_volt_max_uv) 732c5b64a99SLinus Walleij di->chg_info.ac_chg_ok = false; 733c5b64a99SLinus Walleij else 734c5b64a99SLinus Walleij di->chg_info.ac_chg_ok = true; 735c5b64a99SLinus Walleij 736c5b64a99SLinus Walleij } 737c5b64a99SLinus Walleij 738c5b64a99SLinus Walleij /** 739c5b64a99SLinus Walleij * ab8500_chargalg_end_of_charge() - Check if end-of-charge criteria is fulfilled 740c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 741c5b64a99SLinus Walleij * 742c5b64a99SLinus Walleij * End-of-charge criteria is fulfilled when the battery voltage is above a 743c5b64a99SLinus Walleij * certain limit and the battery current is below a certain limit for a 744c5b64a99SLinus Walleij * predefined number of consecutive seconds. If true, the battery is full 745c5b64a99SLinus Walleij */ 746c5b64a99SLinus Walleij static void ab8500_chargalg_end_of_charge(struct ab8500_chargalg *di) 747c5b64a99SLinus Walleij { 748c5b64a99SLinus Walleij if (di->charge_status == POWER_SUPPLY_STATUS_CHARGING && 749c5b64a99SLinus Walleij di->charge_state == STATE_NORMAL && 7502a5f4183SLinus Walleij !di->maintenance_chg && (di->batt_data.volt_uv >= 751d662a7dfSLinus Walleij di->bm->bi->voltage_max_design_uv || 752c5b64a99SLinus Walleij di->events.usb_cv_active || di->events.ac_cv_active) && 7539c20899dSLinus Walleij di->batt_data.avg_curr_ua < 75425fd3303SLinus Walleij di->bm->bi->charge_term_current_ua && 7559c20899dSLinus Walleij di->batt_data.avg_curr_ua > 0) { 756c5b64a99SLinus Walleij if (++di->eoc_cnt >= EOC_COND_CNT) { 757c5b64a99SLinus Walleij di->eoc_cnt = 0; 758c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_FULL; 759c5b64a99SLinus Walleij di->maintenance_chg = true; 760c5b64a99SLinus Walleij dev_dbg(di->dev, "EOC reached!\n"); 761c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 762c5b64a99SLinus Walleij } else { 763c5b64a99SLinus Walleij dev_dbg(di->dev, 764c5b64a99SLinus Walleij " EOC limit reached for the %d" 765c5b64a99SLinus Walleij " time, out of %d before EOC\n", 766c5b64a99SLinus Walleij di->eoc_cnt, 767c5b64a99SLinus Walleij EOC_COND_CNT); 768c5b64a99SLinus Walleij } 769c5b64a99SLinus Walleij } else { 770c5b64a99SLinus Walleij di->eoc_cnt = 0; 771c5b64a99SLinus Walleij } 772c5b64a99SLinus Walleij } 773c5b64a99SLinus Walleij 774c5b64a99SLinus Walleij static void init_maxim_chg_curr(struct ab8500_chargalg *di) 775c5b64a99SLinus Walleij { 77625fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 77783e5aa77SLinus Walleij 77883e5aa77SLinus Walleij di->ccm.original_iset_ua = bi->constant_charge_current_max_ua; 77983e5aa77SLinus Walleij di->ccm.current_iset_ua = bi->constant_charge_current_max_ua; 78083e5aa77SLinus Walleij di->ccm.max_current_ua = di->bm->maxi->chg_curr_ua; 781c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 782c5b64a99SLinus Walleij di->ccm.level = 0; 783c5b64a99SLinus Walleij } 784c5b64a99SLinus Walleij 785c5b64a99SLinus Walleij /** 786c5b64a99SLinus Walleij * ab8500_chargalg_chg_curr_maxim - increases the charger current to 787c5b64a99SLinus Walleij * compensate for the system load 788c5b64a99SLinus Walleij * @di pointer to the ab8500_chargalg structure 789c5b64a99SLinus Walleij * 790c5b64a99SLinus Walleij * This maximization function is used to raise the charger current to get the 791c5b64a99SLinus Walleij * battery current as close to the optimal value as possible. The battery 792c5b64a99SLinus Walleij * current during charging is affected by the system load 793c5b64a99SLinus Walleij */ 794c5b64a99SLinus Walleij static enum maxim_ret ab8500_chargalg_chg_curr_maxim(struct ab8500_chargalg *di) 795c5b64a99SLinus Walleij { 79683e5aa77SLinus Walleij int delta_i_ua; 797c5b64a99SLinus Walleij 798c5b64a99SLinus Walleij if (!di->bm->maxi->ena_maxi) 799c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 800c5b64a99SLinus Walleij 80183e5aa77SLinus Walleij delta_i_ua = di->ccm.original_iset_ua - di->batt_data.inst_curr_ua; 802c5b64a99SLinus Walleij 803c5b64a99SLinus Walleij if (di->events.vbus_collapsed) { 804c5b64a99SLinus Walleij dev_dbg(di->dev, "Charger voltage has collapsed %d\n", 805c5b64a99SLinus Walleij di->ccm.wait_cnt); 806c5b64a99SLinus Walleij if (di->ccm.wait_cnt == 0) { 807c5b64a99SLinus Walleij dev_dbg(di->dev, "lowering current\n"); 808c5b64a99SLinus Walleij di->ccm.wait_cnt++; 809c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 81005906f58SLinus Walleij di->ccm.max_current_ua = di->ccm.current_iset_ua; 81183e5aa77SLinus Walleij di->ccm.current_iset_ua = di->ccm.max_current_ua; 812c5b64a99SLinus Walleij di->ccm.level--; 813c5b64a99SLinus Walleij return MAXIM_RET_CHANGE; 814c5b64a99SLinus Walleij } else { 815c5b64a99SLinus Walleij dev_dbg(di->dev, "waiting\n"); 816c5b64a99SLinus Walleij /* Let's go in here twice before lowering curr again */ 817c5b64a99SLinus Walleij di->ccm.wait_cnt = (di->ccm.wait_cnt + 1) % 3; 818c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 819c5b64a99SLinus Walleij } 820c5b64a99SLinus Walleij } 821c5b64a99SLinus Walleij 822c5b64a99SLinus Walleij di->ccm.wait_cnt = 0; 823c5b64a99SLinus Walleij 82483e5aa77SLinus Walleij if (di->batt_data.inst_curr_ua > di->ccm.original_iset_ua) { 82583e5aa77SLinus Walleij dev_dbg(di->dev, " Maximization Ibat (%duA) too high" 82683e5aa77SLinus Walleij " (limit %duA) (current iset: %duA)!\n", 82783e5aa77SLinus Walleij di->batt_data.inst_curr_ua, di->ccm.original_iset_ua, 82883e5aa77SLinus Walleij di->ccm.current_iset_ua); 829c5b64a99SLinus Walleij 83083e5aa77SLinus Walleij if (di->ccm.current_iset_ua == di->ccm.original_iset_ua) 831c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 832c5b64a99SLinus Walleij 833c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 83483e5aa77SLinus Walleij di->ccm.current_iset_ua = di->ccm.original_iset_ua; 835c5b64a99SLinus Walleij di->ccm.level = 0; 836c5b64a99SLinus Walleij 837c5b64a99SLinus Walleij return MAXIM_RET_IBAT_TOO_HIGH; 838c5b64a99SLinus Walleij } 839c5b64a99SLinus Walleij 840c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 841c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 842c5b64a99SLinus Walleij } 843c5b64a99SLinus Walleij 844c5b64a99SLinus Walleij static void handle_maxim_chg_curr(struct ab8500_chargalg *di) 845c5b64a99SLinus Walleij { 84625fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 847c5b64a99SLinus Walleij enum maxim_ret ret; 848c5b64a99SLinus Walleij int result; 849c5b64a99SLinus Walleij 850c5b64a99SLinus Walleij ret = ab8500_chargalg_chg_curr_maxim(di); 851c5b64a99SLinus Walleij switch (ret) { 852c5b64a99SLinus Walleij case MAXIM_RET_CHANGE: 853c5b64a99SLinus Walleij result = ab8500_chargalg_update_chg_curr(di, 85483e5aa77SLinus Walleij di->ccm.current_iset_ua); 855c5b64a99SLinus Walleij if (result) 856c5b64a99SLinus Walleij dev_err(di->dev, "failed to set chg curr\n"); 857c5b64a99SLinus Walleij break; 858c5b64a99SLinus Walleij case MAXIM_RET_IBAT_TOO_HIGH: 859c5b64a99SLinus Walleij result = ab8500_chargalg_update_chg_curr(di, 86083e5aa77SLinus Walleij bi->constant_charge_current_max_ua); 861c5b64a99SLinus Walleij if (result) 862c5b64a99SLinus Walleij dev_err(di->dev, "failed to set chg curr\n"); 863c5b64a99SLinus Walleij break; 864c5b64a99SLinus Walleij 865c5b64a99SLinus Walleij case MAXIM_RET_NOACTION: 866c5b64a99SLinus Walleij default: 867c5b64a99SLinus Walleij /* Do nothing..*/ 868c5b64a99SLinus Walleij break; 869c5b64a99SLinus Walleij } 870c5b64a99SLinus Walleij } 871c5b64a99SLinus Walleij 872c5b64a99SLinus Walleij static int ab8500_chargalg_get_ext_psy_data(struct device *dev, void *data) 873c5b64a99SLinus Walleij { 874c5b64a99SLinus Walleij struct power_supply *psy; 875c5b64a99SLinus Walleij struct power_supply *ext = dev_get_drvdata(dev); 876c5b64a99SLinus Walleij const char **supplicants = (const char **)ext->supplied_to; 877c5b64a99SLinus Walleij struct ab8500_chargalg *di; 878c5b64a99SLinus Walleij union power_supply_propval ret; 879c5b64a99SLinus Walleij int j; 880c5b64a99SLinus Walleij bool capacity_updated = false; 881c5b64a99SLinus Walleij 882c5b64a99SLinus Walleij psy = (struct power_supply *)data; 883c5b64a99SLinus Walleij di = power_supply_get_drvdata(psy); 884c5b64a99SLinus Walleij /* For all psy where the driver name appears in any supplied_to */ 885c5b64a99SLinus Walleij j = match_string(supplicants, ext->num_supplicants, psy->desc->name); 886c5b64a99SLinus Walleij if (j < 0) 887c5b64a99SLinus Walleij return 0; 888c5b64a99SLinus Walleij 889c5b64a99SLinus Walleij /* 890c5b64a99SLinus Walleij * If external is not registering 'POWER_SUPPLY_PROP_CAPACITY' to its 891c5b64a99SLinus Walleij * property because of handling that sysfs entry on its own, this is 892c5b64a99SLinus Walleij * the place to get the battery capacity. 893c5b64a99SLinus Walleij */ 894c5b64a99SLinus Walleij if (!power_supply_get_property(ext, POWER_SUPPLY_PROP_CAPACITY, &ret)) { 895c5b64a99SLinus Walleij di->batt_data.percent = ret.intval; 896c5b64a99SLinus Walleij capacity_updated = true; 897c5b64a99SLinus Walleij } 898c5b64a99SLinus Walleij 899c5b64a99SLinus Walleij /* Go through all properties for the psy */ 900c5b64a99SLinus Walleij for (j = 0; j < ext->desc->num_properties; j++) { 901c5b64a99SLinus Walleij enum power_supply_property prop; 902c5b64a99SLinus Walleij prop = ext->desc->properties[j]; 903c5b64a99SLinus Walleij 904c5b64a99SLinus Walleij /* 905c5b64a99SLinus Walleij * Initialize chargers if not already done. 906c5b64a99SLinus Walleij * The ab8500_charger*/ 907c5b64a99SLinus Walleij if (!di->ac_chg && 908c5b64a99SLinus Walleij ext->desc->type == POWER_SUPPLY_TYPE_MAINS) 909c5b64a99SLinus Walleij di->ac_chg = psy_to_ux500_charger(ext); 910c5b64a99SLinus Walleij else if (!di->usb_chg && 911c5b64a99SLinus Walleij ext->desc->type == POWER_SUPPLY_TYPE_USB) 912c5b64a99SLinus Walleij di->usb_chg = psy_to_ux500_charger(ext); 913c5b64a99SLinus Walleij 914c5b64a99SLinus Walleij if (power_supply_get_property(ext, prop, &ret)) 915c5b64a99SLinus Walleij continue; 916c5b64a99SLinus Walleij switch (prop) { 917c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_PRESENT: 918c5b64a99SLinus Walleij switch (ext->desc->type) { 919c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 920c5b64a99SLinus Walleij /* Battery present */ 921c5b64a99SLinus Walleij if (ret.intval) 922c5b64a99SLinus Walleij di->events.batt_rem = false; 923c5b64a99SLinus Walleij /* Battery removed */ 924c5b64a99SLinus Walleij else 925c5b64a99SLinus Walleij di->events.batt_rem = true; 926c5b64a99SLinus Walleij break; 927c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 928c5b64a99SLinus Walleij /* AC disconnected */ 929c5b64a99SLinus Walleij if (!ret.intval && 930c5b64a99SLinus Walleij (di->chg_info.conn_chg & AC_CHG)) { 931c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = 932c5b64a99SLinus Walleij di->chg_info.conn_chg; 933c5b64a99SLinus Walleij di->chg_info.conn_chg &= ~AC_CHG; 934c5b64a99SLinus Walleij } 935c5b64a99SLinus Walleij /* AC connected */ 936c5b64a99SLinus Walleij else if (ret.intval && 937c5b64a99SLinus Walleij !(di->chg_info.conn_chg & AC_CHG)) { 938c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = 939c5b64a99SLinus Walleij di->chg_info.conn_chg; 940c5b64a99SLinus Walleij di->chg_info.conn_chg |= AC_CHG; 941c5b64a99SLinus Walleij } 942c5b64a99SLinus Walleij break; 943c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 944c5b64a99SLinus Walleij /* USB disconnected */ 945c5b64a99SLinus Walleij if (!ret.intval && 946c5b64a99SLinus Walleij (di->chg_info.conn_chg & USB_CHG)) { 947c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = 948c5b64a99SLinus Walleij di->chg_info.conn_chg; 949c5b64a99SLinus Walleij di->chg_info.conn_chg &= ~USB_CHG; 950c5b64a99SLinus Walleij } 951c5b64a99SLinus Walleij /* USB connected */ 952c5b64a99SLinus Walleij else if (ret.intval && 953c5b64a99SLinus Walleij !(di->chg_info.conn_chg & USB_CHG)) { 954c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = 955c5b64a99SLinus Walleij di->chg_info.conn_chg; 956c5b64a99SLinus Walleij di->chg_info.conn_chg |= USB_CHG; 957c5b64a99SLinus Walleij } 958c5b64a99SLinus Walleij break; 959c5b64a99SLinus Walleij default: 960c5b64a99SLinus Walleij break; 961c5b64a99SLinus Walleij } 962c5b64a99SLinus Walleij break; 963c5b64a99SLinus Walleij 964c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_ONLINE: 965c5b64a99SLinus Walleij switch (ext->desc->type) { 966c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 967c5b64a99SLinus Walleij break; 968c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 969c5b64a99SLinus Walleij /* AC offline */ 970c5b64a99SLinus Walleij if (!ret.intval && 971c5b64a99SLinus Walleij (di->chg_info.online_chg & AC_CHG)) { 972c5b64a99SLinus Walleij di->chg_info.prev_online_chg = 973c5b64a99SLinus Walleij di->chg_info.online_chg; 974c5b64a99SLinus Walleij di->chg_info.online_chg &= ~AC_CHG; 975c5b64a99SLinus Walleij } 976c5b64a99SLinus Walleij /* AC online */ 977c5b64a99SLinus Walleij else if (ret.intval && 978c5b64a99SLinus Walleij !(di->chg_info.online_chg & AC_CHG)) { 979c5b64a99SLinus Walleij di->chg_info.prev_online_chg = 980c5b64a99SLinus Walleij di->chg_info.online_chg; 981c5b64a99SLinus Walleij di->chg_info.online_chg |= AC_CHG; 982c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 983c5b64a99SLinus Walleij &di->chargalg_wd_work, 0); 984c5b64a99SLinus Walleij } 985c5b64a99SLinus Walleij break; 986c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 987c5b64a99SLinus Walleij /* USB offline */ 988c5b64a99SLinus Walleij if (!ret.intval && 989c5b64a99SLinus Walleij (di->chg_info.online_chg & USB_CHG)) { 990c5b64a99SLinus Walleij di->chg_info.prev_online_chg = 991c5b64a99SLinus Walleij di->chg_info.online_chg; 992c5b64a99SLinus Walleij di->chg_info.online_chg &= ~USB_CHG; 993c5b64a99SLinus Walleij } 994c5b64a99SLinus Walleij /* USB online */ 995c5b64a99SLinus Walleij else if (ret.intval && 996c5b64a99SLinus Walleij !(di->chg_info.online_chg & USB_CHG)) { 997c5b64a99SLinus Walleij di->chg_info.prev_online_chg = 998c5b64a99SLinus Walleij di->chg_info.online_chg; 999c5b64a99SLinus Walleij di->chg_info.online_chg |= USB_CHG; 1000c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1001c5b64a99SLinus Walleij &di->chargalg_wd_work, 0); 1002c5b64a99SLinus Walleij } 1003c5b64a99SLinus Walleij break; 1004c5b64a99SLinus Walleij default: 1005c5b64a99SLinus Walleij break; 1006c5b64a99SLinus Walleij } 1007c5b64a99SLinus Walleij break; 1008c5b64a99SLinus Walleij 1009c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_HEALTH: 1010c5b64a99SLinus Walleij switch (ext->desc->type) { 1011c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 1012c5b64a99SLinus Walleij break; 1013c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 1014c5b64a99SLinus Walleij switch (ret.intval) { 1015c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE: 1016c5b64a99SLinus Walleij di->events.mainextchnotok = true; 1017c5b64a99SLinus Walleij di->events.main_thermal_prot = false; 1018c5b64a99SLinus Walleij di->events.main_ovv = false; 1019c5b64a99SLinus Walleij di->events.ac_wd_expired = false; 1020c5b64a99SLinus Walleij break; 1021c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_DEAD: 1022c5b64a99SLinus Walleij di->events.ac_wd_expired = true; 1023c5b64a99SLinus Walleij di->events.mainextchnotok = false; 1024c5b64a99SLinus Walleij di->events.main_ovv = false; 1025c5b64a99SLinus Walleij di->events.main_thermal_prot = false; 1026c5b64a99SLinus Walleij break; 1027c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_COLD: 1028c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_OVERHEAT: 1029c5b64a99SLinus Walleij di->events.main_thermal_prot = true; 1030c5b64a99SLinus Walleij di->events.mainextchnotok = false; 1031c5b64a99SLinus Walleij di->events.main_ovv = false; 1032c5b64a99SLinus Walleij di->events.ac_wd_expired = false; 1033c5b64a99SLinus Walleij break; 1034c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_OVERVOLTAGE: 1035c5b64a99SLinus Walleij di->events.main_ovv = true; 1036c5b64a99SLinus Walleij di->events.mainextchnotok = false; 1037c5b64a99SLinus Walleij di->events.main_thermal_prot = false; 1038c5b64a99SLinus Walleij di->events.ac_wd_expired = false; 1039c5b64a99SLinus Walleij break; 1040c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_GOOD: 1041c5b64a99SLinus Walleij di->events.main_thermal_prot = false; 1042c5b64a99SLinus Walleij di->events.mainextchnotok = false; 1043c5b64a99SLinus Walleij di->events.main_ovv = false; 1044c5b64a99SLinus Walleij di->events.ac_wd_expired = false; 1045c5b64a99SLinus Walleij break; 1046c5b64a99SLinus Walleij default: 1047c5b64a99SLinus Walleij break; 1048c5b64a99SLinus Walleij } 1049c5b64a99SLinus Walleij break; 1050c5b64a99SLinus Walleij 1051c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1052c5b64a99SLinus Walleij switch (ret.intval) { 1053c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE: 1054c5b64a99SLinus Walleij di->events.usbchargernotok = true; 1055c5b64a99SLinus Walleij di->events.usb_thermal_prot = false; 1056c5b64a99SLinus Walleij di->events.vbus_ovv = false; 1057c5b64a99SLinus Walleij di->events.usb_wd_expired = false; 1058c5b64a99SLinus Walleij break; 1059c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_DEAD: 1060c5b64a99SLinus Walleij di->events.usb_wd_expired = true; 1061c5b64a99SLinus Walleij di->events.usbchargernotok = false; 1062c5b64a99SLinus Walleij di->events.usb_thermal_prot = false; 1063c5b64a99SLinus Walleij di->events.vbus_ovv = false; 1064c5b64a99SLinus Walleij break; 1065c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_COLD: 1066c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_OVERHEAT: 1067c5b64a99SLinus Walleij di->events.usb_thermal_prot = true; 1068c5b64a99SLinus Walleij di->events.usbchargernotok = false; 1069c5b64a99SLinus Walleij di->events.vbus_ovv = false; 1070c5b64a99SLinus Walleij di->events.usb_wd_expired = false; 1071c5b64a99SLinus Walleij break; 1072c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_OVERVOLTAGE: 1073c5b64a99SLinus Walleij di->events.vbus_ovv = true; 1074c5b64a99SLinus Walleij di->events.usbchargernotok = false; 1075c5b64a99SLinus Walleij di->events.usb_thermal_prot = false; 1076c5b64a99SLinus Walleij di->events.usb_wd_expired = false; 1077c5b64a99SLinus Walleij break; 1078c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_GOOD: 1079c5b64a99SLinus Walleij di->events.usbchargernotok = false; 1080c5b64a99SLinus Walleij di->events.usb_thermal_prot = false; 1081c5b64a99SLinus Walleij di->events.vbus_ovv = false; 1082c5b64a99SLinus Walleij di->events.usb_wd_expired = false; 1083c5b64a99SLinus Walleij break; 1084c5b64a99SLinus Walleij default: 1085c5b64a99SLinus Walleij break; 1086c5b64a99SLinus Walleij } 10874520dcbeSLinus Torvalds break; 1088c5b64a99SLinus Walleij default: 1089c5b64a99SLinus Walleij break; 1090c5b64a99SLinus Walleij } 1091c5b64a99SLinus Walleij break; 1092c5b64a99SLinus Walleij 1093c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_VOLTAGE_NOW: 1094c5b64a99SLinus Walleij switch (ext->desc->type) { 1095c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 10962a5f4183SLinus Walleij di->batt_data.volt_uv = ret.intval; 1097c5b64a99SLinus Walleij break; 1098c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 1099bc6e0287SLinus Walleij di->chg_info.ac_volt_uv = ret.intval; 1100c5b64a99SLinus Walleij break; 1101c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1102bc6e0287SLinus Walleij di->chg_info.usb_volt_uv = ret.intval; 1103c5b64a99SLinus Walleij break; 1104c5b64a99SLinus Walleij default: 1105c5b64a99SLinus Walleij break; 1106c5b64a99SLinus Walleij } 1107c5b64a99SLinus Walleij break; 1108c5b64a99SLinus Walleij 1109c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_VOLTAGE_AVG: 1110c5b64a99SLinus Walleij switch (ext->desc->type) { 1111c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 1112c5b64a99SLinus Walleij /* AVG is used to indicate when we are 1113c5b64a99SLinus Walleij * in CV mode */ 1114c5b64a99SLinus Walleij if (ret.intval) 1115c5b64a99SLinus Walleij di->events.ac_cv_active = true; 1116c5b64a99SLinus Walleij else 1117c5b64a99SLinus Walleij di->events.ac_cv_active = false; 1118c5b64a99SLinus Walleij 1119c5b64a99SLinus Walleij break; 1120c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1121c5b64a99SLinus Walleij /* AVG is used to indicate when we are 1122c5b64a99SLinus Walleij * in CV mode */ 1123c5b64a99SLinus Walleij if (ret.intval) 1124c5b64a99SLinus Walleij di->events.usb_cv_active = true; 1125c5b64a99SLinus Walleij else 1126c5b64a99SLinus Walleij di->events.usb_cv_active = false; 1127c5b64a99SLinus Walleij 1128c5b64a99SLinus Walleij break; 1129c5b64a99SLinus Walleij default: 1130c5b64a99SLinus Walleij break; 1131c5b64a99SLinus Walleij } 1132c5b64a99SLinus Walleij break; 1133c5b64a99SLinus Walleij 1134c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_TECHNOLOGY: 1135c5b64a99SLinus Walleij switch (ext->desc->type) { 1136c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 1137c5b64a99SLinus Walleij if (ret.intval) 1138c5b64a99SLinus Walleij di->events.batt_unknown = false; 1139c5b64a99SLinus Walleij else 1140c5b64a99SLinus Walleij di->events.batt_unknown = true; 1141c5b64a99SLinus Walleij 1142c5b64a99SLinus Walleij break; 1143c5b64a99SLinus Walleij default: 1144c5b64a99SLinus Walleij break; 1145c5b64a99SLinus Walleij } 1146c5b64a99SLinus Walleij break; 1147c5b64a99SLinus Walleij 1148c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_TEMP: 1149c5b64a99SLinus Walleij di->batt_data.temp = ret.intval / 10; 1150c5b64a99SLinus Walleij break; 1151c5b64a99SLinus Walleij 1152c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_CURRENT_NOW: 1153c5b64a99SLinus Walleij switch (ext->desc->type) { 1154c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 115583e5aa77SLinus Walleij di->chg_info.ac_curr_ua = ret.intval; 1156c5b64a99SLinus Walleij break; 1157c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 115883e5aa77SLinus Walleij di->chg_info.usb_curr_ua = ret.intval; 1159c5b64a99SLinus Walleij break; 1160c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 116183e5aa77SLinus Walleij di->batt_data.inst_curr_ua = ret.intval; 1162c5b64a99SLinus Walleij break; 1163c5b64a99SLinus Walleij default: 1164c5b64a99SLinus Walleij break; 1165c5b64a99SLinus Walleij } 1166c5b64a99SLinus Walleij break; 1167c5b64a99SLinus Walleij 1168c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_CURRENT_AVG: 1169c5b64a99SLinus Walleij switch (ext->desc->type) { 1170c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 11719c20899dSLinus Walleij di->batt_data.avg_curr_ua = ret.intval; 1172c5b64a99SLinus Walleij break; 1173c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1174c5b64a99SLinus Walleij if (ret.intval) 1175c5b64a99SLinus Walleij di->events.vbus_collapsed = true; 1176c5b64a99SLinus Walleij else 1177c5b64a99SLinus Walleij di->events.vbus_collapsed = false; 1178c5b64a99SLinus Walleij break; 1179c5b64a99SLinus Walleij default: 1180c5b64a99SLinus Walleij break; 1181c5b64a99SLinus Walleij } 1182c5b64a99SLinus Walleij break; 1183c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_CAPACITY: 1184c5b64a99SLinus Walleij if (!capacity_updated) 1185c5b64a99SLinus Walleij di->batt_data.percent = ret.intval; 1186c5b64a99SLinus Walleij break; 1187c5b64a99SLinus Walleij default: 1188c5b64a99SLinus Walleij break; 1189c5b64a99SLinus Walleij } 1190c5b64a99SLinus Walleij } 1191c5b64a99SLinus Walleij return 0; 1192c5b64a99SLinus Walleij } 1193c5b64a99SLinus Walleij 1194c5b64a99SLinus Walleij /** 1195c5b64a99SLinus Walleij * ab8500_chargalg_external_power_changed() - callback for power supply changes 1196c5b64a99SLinus Walleij * @psy: pointer to the structure power_supply 1197c5b64a99SLinus Walleij * 1198c5b64a99SLinus Walleij * This function is the entry point of the pointer external_power_changed 1199c5b64a99SLinus Walleij * of the structure power_supply. 1200c5b64a99SLinus Walleij * This function gets executed when there is a change in any external power 1201c5b64a99SLinus Walleij * supply that this driver needs to be notified of. 1202c5b64a99SLinus Walleij */ 1203c5b64a99SLinus Walleij static void ab8500_chargalg_external_power_changed(struct power_supply *psy) 1204c5b64a99SLinus Walleij { 1205c5b64a99SLinus Walleij struct ab8500_chargalg *di = power_supply_get_drvdata(psy); 1206c5b64a99SLinus Walleij 1207c5b64a99SLinus Walleij /* 1208c5b64a99SLinus Walleij * Trigger execution of the algorithm instantly and read 1209c5b64a99SLinus Walleij * all power_supply properties there instead 1210c5b64a99SLinus Walleij */ 1211661d10eeSLinus Walleij if (di->chargalg_wq) 1212c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 1213c5b64a99SLinus Walleij } 1214c5b64a99SLinus Walleij 1215c5b64a99SLinus Walleij /** 1216c5b64a99SLinus Walleij * ab8500_chargalg_algorithm() - Main function for the algorithm 1217c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 1218c5b64a99SLinus Walleij * 1219c5b64a99SLinus Walleij * This is the main control function for the charging algorithm. 1220c5b64a99SLinus Walleij * It is called periodically or when something happens that will 1221c5b64a99SLinus Walleij * trigger a state change 1222c5b64a99SLinus Walleij */ 1223c5b64a99SLinus Walleij static void ab8500_chargalg_algorithm(struct ab8500_chargalg *di) 1224c5b64a99SLinus Walleij { 122525fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 1226c5b64a99SLinus Walleij int charger_status; 1227c5b64a99SLinus Walleij int ret; 1228c5b64a99SLinus Walleij 1229c5b64a99SLinus Walleij /* Collect data from all power_supply class devices */ 1230c5b64a99SLinus Walleij class_for_each_device(power_supply_class, NULL, 1231c5b64a99SLinus Walleij di->chargalg_psy, ab8500_chargalg_get_ext_psy_data); 1232c5b64a99SLinus Walleij 1233c5b64a99SLinus Walleij ab8500_chargalg_end_of_charge(di); 1234c5b64a99SLinus Walleij ab8500_chargalg_check_temp(di); 1235c5b64a99SLinus Walleij ab8500_chargalg_check_charger_voltage(di); 1236c5b64a99SLinus Walleij 1237c5b64a99SLinus Walleij charger_status = ab8500_chargalg_check_charger_connection(di); 1238c5b64a99SLinus Walleij 1239c5b64a99SLinus Walleij if (is_ab8500(di->parent)) { 1240c5b64a99SLinus Walleij ret = ab8500_chargalg_check_charger_enable(di); 1241c5b64a99SLinus Walleij if (ret < 0) 1242c5b64a99SLinus Walleij dev_err(di->dev, "Checking charger is enabled error" 1243c5b64a99SLinus Walleij ": Returned Value %d\n", ret); 1244c5b64a99SLinus Walleij } 1245c5b64a99SLinus Walleij 1246c5b64a99SLinus Walleij /* 1247c5b64a99SLinus Walleij * First check if we have a charger connected. 1248c5b64a99SLinus Walleij * Also we don't allow charging of unknown batteries if configured 1249c5b64a99SLinus Walleij * this way 1250c5b64a99SLinus Walleij */ 1251c5b64a99SLinus Walleij if (!charger_status || 1252c5b64a99SLinus Walleij (di->events.batt_unknown && !di->bm->chg_unknown_bat)) { 1253c5b64a99SLinus Walleij if (di->charge_state != STATE_HANDHELD) { 1254c5b64a99SLinus Walleij di->events.safety_timer_expired = false; 1255c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_HANDHELD_INIT); 1256c5b64a99SLinus Walleij } 1257c5b64a99SLinus Walleij } 1258c5b64a99SLinus Walleij 1259c5b64a99SLinus Walleij /* Safety timer expiration */ 1260c5b64a99SLinus Walleij else if (di->events.safety_timer_expired) { 1261c5b64a99SLinus Walleij if (di->charge_state != STATE_SAFETY_TIMER_EXPIRED) 1262c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1263c5b64a99SLinus Walleij STATE_SAFETY_TIMER_EXPIRED_INIT); 1264c5b64a99SLinus Walleij } 1265c5b64a99SLinus Walleij /* 1266c5b64a99SLinus Walleij * Check if any interrupts has occured 1267c5b64a99SLinus Walleij * that will prevent us from charging 1268c5b64a99SLinus Walleij */ 1269c5b64a99SLinus Walleij 1270c5b64a99SLinus Walleij /* Battery removed */ 1271c5b64a99SLinus Walleij else if (di->events.batt_rem) { 1272c5b64a99SLinus Walleij if (di->charge_state != STATE_BATT_REMOVED) 1273c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_BATT_REMOVED_INIT); 1274c5b64a99SLinus Walleij } 1275c5b64a99SLinus Walleij /* Main or USB charger not ok. */ 1276c5b64a99SLinus Walleij else if (di->events.mainextchnotok || di->events.usbchargernotok) { 1277c5b64a99SLinus Walleij /* 1278c5b64a99SLinus Walleij * If vbus_collapsed is set, we have to lower the charger 1279c5b64a99SLinus Walleij * current, which is done in the normal state below 1280c5b64a99SLinus Walleij */ 1281c5b64a99SLinus Walleij if (di->charge_state != STATE_CHG_NOT_OK && 1282c5b64a99SLinus Walleij !di->events.vbus_collapsed) 1283c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_CHG_NOT_OK_INIT); 1284c5b64a99SLinus Walleij } 1285c5b64a99SLinus Walleij /* VBUS, Main or VBAT OVV. */ 1286c5b64a99SLinus Walleij else if (di->events.vbus_ovv || 1287c5b64a99SLinus Walleij di->events.main_ovv || 1288c5b64a99SLinus Walleij di->events.batt_ovv || 1289c5b64a99SLinus Walleij !di->chg_info.usb_chg_ok || 1290c5b64a99SLinus Walleij !di->chg_info.ac_chg_ok) { 1291c5b64a99SLinus Walleij if (di->charge_state != STATE_OVV_PROTECT) 1292c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_OVV_PROTECT_INIT); 1293c5b64a99SLinus Walleij } 1294c5b64a99SLinus Walleij /* USB Thermal, stop charging */ 1295c5b64a99SLinus Walleij else if (di->events.main_thermal_prot || 1296c5b64a99SLinus Walleij di->events.usb_thermal_prot) { 1297c5b64a99SLinus Walleij if (di->charge_state != STATE_HW_TEMP_PROTECT) 1298c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1299c5b64a99SLinus Walleij STATE_HW_TEMP_PROTECT_INIT); 1300c5b64a99SLinus Walleij } 1301c5b64a99SLinus Walleij /* Battery temp over/under */ 1302c5b64a99SLinus Walleij else if (di->events.btemp_underover) { 1303c5b64a99SLinus Walleij if (di->charge_state != STATE_TEMP_UNDEROVER) 1304c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1305c5b64a99SLinus Walleij STATE_TEMP_UNDEROVER_INIT); 1306c5b64a99SLinus Walleij } 1307c5b64a99SLinus Walleij /* Watchdog expired */ 1308c5b64a99SLinus Walleij else if (di->events.ac_wd_expired || 1309c5b64a99SLinus Walleij di->events.usb_wd_expired) { 1310c5b64a99SLinus Walleij if (di->charge_state != STATE_WD_EXPIRED) 1311c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_WD_EXPIRED_INIT); 1312c5b64a99SLinus Walleij } 1313c5b64a99SLinus Walleij /* Battery temp high/low */ 1314c5b64a99SLinus Walleij else if (di->events.btemp_lowhigh) { 1315c5b64a99SLinus Walleij if (di->charge_state != STATE_TEMP_LOWHIGH) 1316c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_TEMP_LOWHIGH_INIT); 1317c5b64a99SLinus Walleij } 1318c5b64a99SLinus Walleij 1319c5b64a99SLinus Walleij dev_dbg(di->dev, 1320c5b64a99SLinus Walleij "[CHARGALG] Vb %d Ib_avg %d Ib_inst %d Tb %d Cap %d Maint %d " 1321c5b64a99SLinus Walleij "State %s Active_chg %d Chg_status %d AC %d USB %d " 1322c5b64a99SLinus Walleij "AC_online %d USB_online %d AC_CV %d USB_CV %d AC_I %d " 1323c5b64a99SLinus Walleij "USB_I %d AC_Vset %d AC_Iset %d USB_Vset %d USB_Iset %d\n", 13242a5f4183SLinus Walleij di->batt_data.volt_uv, 13259c20899dSLinus Walleij di->batt_data.avg_curr_ua, 132683e5aa77SLinus Walleij di->batt_data.inst_curr_ua, 1327c5b64a99SLinus Walleij di->batt_data.temp, 1328c5b64a99SLinus Walleij di->batt_data.percent, 1329c5b64a99SLinus Walleij di->maintenance_chg, 1330c5b64a99SLinus Walleij states[di->charge_state], 1331c5b64a99SLinus Walleij di->chg_info.charger_type, 1332c5b64a99SLinus Walleij di->charge_status, 1333c5b64a99SLinus Walleij di->chg_info.conn_chg & AC_CHG, 1334c5b64a99SLinus Walleij di->chg_info.conn_chg & USB_CHG, 1335c5b64a99SLinus Walleij di->chg_info.online_chg & AC_CHG, 1336c5b64a99SLinus Walleij di->chg_info.online_chg & USB_CHG, 1337c5b64a99SLinus Walleij di->events.ac_cv_active, 1338c5b64a99SLinus Walleij di->events.usb_cv_active, 133983e5aa77SLinus Walleij di->chg_info.ac_curr_ua, 134083e5aa77SLinus Walleij di->chg_info.usb_curr_ua, 1341bc6e0287SLinus Walleij di->chg_info.ac_vset_uv, 134283e5aa77SLinus Walleij di->chg_info.ac_iset_ua, 1343bc6e0287SLinus Walleij di->chg_info.usb_vset_uv, 134483e5aa77SLinus Walleij di->chg_info.usb_iset_ua); 1345c5b64a99SLinus Walleij 1346c5b64a99SLinus Walleij switch (di->charge_state) { 1347c5b64a99SLinus Walleij case STATE_HANDHELD_INIT: 1348c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1349c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING; 1350c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_HANDHELD); 1351c5b64a99SLinus Walleij fallthrough; 1352c5b64a99SLinus Walleij 1353c5b64a99SLinus Walleij case STATE_HANDHELD: 1354c5b64a99SLinus Walleij break; 1355c5b64a99SLinus Walleij 1356c5b64a99SLinus Walleij case STATE_BATT_REMOVED_INIT: 1357c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1358c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_BATT_REMOVED); 1359c5b64a99SLinus Walleij fallthrough; 1360c5b64a99SLinus Walleij 1361c5b64a99SLinus Walleij case STATE_BATT_REMOVED: 1362c5b64a99SLinus Walleij if (!di->events.batt_rem) 1363c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1364c5b64a99SLinus Walleij break; 1365c5b64a99SLinus Walleij 1366c5b64a99SLinus Walleij case STATE_HW_TEMP_PROTECT_INIT: 1367c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1368c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_HW_TEMP_PROTECT); 1369c5b64a99SLinus Walleij fallthrough; 1370c5b64a99SLinus Walleij 1371c5b64a99SLinus Walleij case STATE_HW_TEMP_PROTECT: 1372c5b64a99SLinus Walleij if (!di->events.main_thermal_prot && 1373c5b64a99SLinus Walleij !di->events.usb_thermal_prot) 1374c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1375c5b64a99SLinus Walleij break; 1376c5b64a99SLinus Walleij 1377c5b64a99SLinus Walleij case STATE_OVV_PROTECT_INIT: 1378c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1379c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_OVV_PROTECT); 1380c5b64a99SLinus Walleij fallthrough; 1381c5b64a99SLinus Walleij 1382c5b64a99SLinus Walleij case STATE_OVV_PROTECT: 1383c5b64a99SLinus Walleij if (!di->events.vbus_ovv && 1384c5b64a99SLinus Walleij !di->events.main_ovv && 1385c5b64a99SLinus Walleij !di->events.batt_ovv && 1386c5b64a99SLinus Walleij di->chg_info.usb_chg_ok && 1387c5b64a99SLinus Walleij di->chg_info.ac_chg_ok) 1388c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1389c5b64a99SLinus Walleij break; 1390c5b64a99SLinus Walleij 1391c5b64a99SLinus Walleij case STATE_CHG_NOT_OK_INIT: 1392c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1393c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_CHG_NOT_OK); 1394c5b64a99SLinus Walleij fallthrough; 1395c5b64a99SLinus Walleij 1396c5b64a99SLinus Walleij case STATE_CHG_NOT_OK: 1397c5b64a99SLinus Walleij if (!di->events.mainextchnotok && 1398c5b64a99SLinus Walleij !di->events.usbchargernotok) 1399c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1400c5b64a99SLinus Walleij break; 1401c5b64a99SLinus Walleij 1402c5b64a99SLinus Walleij case STATE_SAFETY_TIMER_EXPIRED_INIT: 1403c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1404c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_SAFETY_TIMER_EXPIRED); 1405c5b64a99SLinus Walleij fallthrough; 1406c5b64a99SLinus Walleij 1407c5b64a99SLinus Walleij case STATE_SAFETY_TIMER_EXPIRED: 1408c5b64a99SLinus Walleij /* We exit this state when charger is removed */ 1409c5b64a99SLinus Walleij break; 1410c5b64a99SLinus Walleij 1411c5b64a99SLinus Walleij case STATE_NORMAL_INIT: 141205906f58SLinus Walleij if (bi->constant_charge_current_max_ua == 0) 141305906f58SLinus Walleij /* "charging" with 0 uA */ 1414c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1415c5b64a99SLinus Walleij else { 1416c5b64a99SLinus Walleij ab8500_chargalg_start_charging(di, 1417bc6e0287SLinus Walleij bi->constant_charge_voltage_max_uv, 141805906f58SLinus Walleij bi->constant_charge_current_max_ua); 1419c5b64a99SLinus Walleij } 1420c5b64a99SLinus Walleij 1421c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL); 1422c5b64a99SLinus Walleij ab8500_chargalg_start_safety_timer(di); 1423c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1424c5b64a99SLinus Walleij init_maxim_chg_curr(di); 1425c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_CHARGING; 1426c5b64a99SLinus Walleij di->eoc_cnt = 0; 1427c5b64a99SLinus Walleij di->maintenance_chg = false; 1428c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1429c5b64a99SLinus Walleij 1430c5b64a99SLinus Walleij break; 1431c5b64a99SLinus Walleij 1432c5b64a99SLinus Walleij case STATE_NORMAL: 1433c5b64a99SLinus Walleij handle_maxim_chg_curr(di); 1434c5b64a99SLinus Walleij if (di->charge_status == POWER_SUPPLY_STATUS_FULL && 1435c5b64a99SLinus Walleij di->maintenance_chg) { 1436c5b64a99SLinus Walleij if (di->bm->no_maintenance) 1437c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1438c5b64a99SLinus Walleij STATE_WAIT_FOR_RECHARGE_INIT); 1439c5b64a99SLinus Walleij else 1440c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1441c5b64a99SLinus Walleij STATE_MAINTENANCE_A_INIT); 1442c5b64a99SLinus Walleij } 1443c5b64a99SLinus Walleij break; 1444c5b64a99SLinus Walleij 1445c5b64a99SLinus Walleij /* This state will be used when the maintenance state is disabled */ 1446c5b64a99SLinus Walleij case STATE_WAIT_FOR_RECHARGE_INIT: 1447c5b64a99SLinus Walleij ab8500_chargalg_hold_charging(di); 1448c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_WAIT_FOR_RECHARGE); 1449c5b64a99SLinus Walleij fallthrough; 1450c5b64a99SLinus Walleij 1451c5b64a99SLinus Walleij case STATE_WAIT_FOR_RECHARGE: 14521091ed7dSLinus Walleij if (di->batt_data.percent <= AB8500_RECHARGE_CAP) 1453c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1454c5b64a99SLinus Walleij break; 1455c5b64a99SLinus Walleij 1456c5b64a99SLinus Walleij case STATE_MAINTENANCE_A_INIT: 1457c5b64a99SLinus Walleij ab8500_chargalg_stop_safety_timer(di); 1458c5b64a99SLinus Walleij ab8500_chargalg_start_maintenance_timer(di, 1459e5dff305SLinus Walleij di->bm->bat_type->maint_a_chg_timer_h); 1460c5b64a99SLinus Walleij ab8500_chargalg_start_charging(di, 1461e5dff305SLinus Walleij di->bm->bat_type->maint_a_vol_lvl, 1462e5dff305SLinus Walleij di->bm->bat_type->maint_a_cur_lvl); 1463c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_MAINTENANCE_A); 1464c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1465c5b64a99SLinus Walleij fallthrough; 1466c5b64a99SLinus Walleij 1467c5b64a99SLinus Walleij case STATE_MAINTENANCE_A: 1468c5b64a99SLinus Walleij if (di->events.maintenance_timer_expired) { 1469c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1470c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_MAINTENANCE_B_INIT); 1471c5b64a99SLinus Walleij } 1472c5b64a99SLinus Walleij break; 1473c5b64a99SLinus Walleij 1474c5b64a99SLinus Walleij case STATE_MAINTENANCE_B_INIT: 1475c5b64a99SLinus Walleij ab8500_chargalg_start_maintenance_timer(di, 1476e5dff305SLinus Walleij di->bm->bat_type->maint_b_chg_timer_h); 1477c5b64a99SLinus Walleij ab8500_chargalg_start_charging(di, 1478e5dff305SLinus Walleij di->bm->bat_type->maint_b_vol_lvl, 1479e5dff305SLinus Walleij di->bm->bat_type->maint_b_cur_lvl); 1480c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_MAINTENANCE_B); 1481c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1482c5b64a99SLinus Walleij fallthrough; 1483c5b64a99SLinus Walleij 1484c5b64a99SLinus Walleij case STATE_MAINTENANCE_B: 1485c5b64a99SLinus Walleij if (di->events.maintenance_timer_expired) { 1486c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1487c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1488c5b64a99SLinus Walleij } 1489c5b64a99SLinus Walleij break; 1490c5b64a99SLinus Walleij 1491c5b64a99SLinus Walleij case STATE_TEMP_LOWHIGH_INIT: 1492c5b64a99SLinus Walleij ab8500_chargalg_start_charging(di, 1493e5dff305SLinus Walleij di->bm->bat_type->low_high_vol_lvl, 1494e5dff305SLinus Walleij di->bm->bat_type->low_high_cur_lvl); 1495c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1496c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_CHARGING; 1497c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_TEMP_LOWHIGH); 1498c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1499c5b64a99SLinus Walleij fallthrough; 1500c5b64a99SLinus Walleij 1501c5b64a99SLinus Walleij case STATE_TEMP_LOWHIGH: 1502c5b64a99SLinus Walleij if (!di->events.btemp_lowhigh) 1503c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1504c5b64a99SLinus Walleij break; 1505c5b64a99SLinus Walleij 1506c5b64a99SLinus Walleij case STATE_WD_EXPIRED_INIT: 1507c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1508c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_WD_EXPIRED); 1509c5b64a99SLinus Walleij fallthrough; 1510c5b64a99SLinus Walleij 1511c5b64a99SLinus Walleij case STATE_WD_EXPIRED: 1512c5b64a99SLinus Walleij if (!di->events.ac_wd_expired && 1513c5b64a99SLinus Walleij !di->events.usb_wd_expired) 1514c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1515c5b64a99SLinus Walleij break; 1516c5b64a99SLinus Walleij 1517c5b64a99SLinus Walleij case STATE_TEMP_UNDEROVER_INIT: 1518c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1519c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_TEMP_UNDEROVER); 1520c5b64a99SLinus Walleij fallthrough; 1521c5b64a99SLinus Walleij 1522c5b64a99SLinus Walleij case STATE_TEMP_UNDEROVER: 1523c5b64a99SLinus Walleij if (!di->events.btemp_underover) 1524c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1525c5b64a99SLinus Walleij break; 1526c5b64a99SLinus Walleij } 1527c5b64a99SLinus Walleij 1528c5b64a99SLinus Walleij /* Start charging directly if the new state is a charge state */ 1529c5b64a99SLinus Walleij if (di->charge_state == STATE_NORMAL_INIT || 1530c5b64a99SLinus Walleij di->charge_state == STATE_MAINTENANCE_A_INIT || 1531c5b64a99SLinus Walleij di->charge_state == STATE_MAINTENANCE_B_INIT) 1532c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 1533c5b64a99SLinus Walleij } 1534c5b64a99SLinus Walleij 1535c5b64a99SLinus Walleij /** 1536c5b64a99SLinus Walleij * ab8500_chargalg_periodic_work() - Periodic work for the algorithm 1537c5b64a99SLinus Walleij * @work: pointer to the work_struct structure 1538c5b64a99SLinus Walleij * 1539c5b64a99SLinus Walleij * Work queue function for the charging algorithm 1540c5b64a99SLinus Walleij */ 1541c5b64a99SLinus Walleij static void ab8500_chargalg_periodic_work(struct work_struct *work) 1542c5b64a99SLinus Walleij { 1543c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(work, 1544c5b64a99SLinus Walleij struct ab8500_chargalg, chargalg_periodic_work.work); 1545c5b64a99SLinus Walleij 1546c5b64a99SLinus Walleij ab8500_chargalg_algorithm(di); 1547c5b64a99SLinus Walleij 1548c5b64a99SLinus Walleij /* 1549c5b64a99SLinus Walleij * If a charger is connected then the battery has to be monitored 1550c5b64a99SLinus Walleij * frequently, else the work can be delayed. 1551c5b64a99SLinus Walleij */ 1552c5b64a99SLinus Walleij if (di->chg_info.conn_chg) 1553c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1554c5b64a99SLinus Walleij &di->chargalg_periodic_work, 1555c5b64a99SLinus Walleij di->bm->interval_charging * HZ); 1556c5b64a99SLinus Walleij else 1557c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1558c5b64a99SLinus Walleij &di->chargalg_periodic_work, 1559c5b64a99SLinus Walleij di->bm->interval_not_charging * HZ); 1560c5b64a99SLinus Walleij } 1561c5b64a99SLinus Walleij 1562c5b64a99SLinus Walleij /** 1563c5b64a99SLinus Walleij * ab8500_chargalg_wd_work() - periodic work to kick the charger watchdog 1564c5b64a99SLinus Walleij * @work: pointer to the work_struct structure 1565c5b64a99SLinus Walleij * 1566c5b64a99SLinus Walleij * Work queue function for kicking the charger watchdog 1567c5b64a99SLinus Walleij */ 1568c5b64a99SLinus Walleij static void ab8500_chargalg_wd_work(struct work_struct *work) 1569c5b64a99SLinus Walleij { 1570c5b64a99SLinus Walleij int ret; 1571c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(work, 1572c5b64a99SLinus Walleij struct ab8500_chargalg, chargalg_wd_work.work); 1573c5b64a99SLinus Walleij 1574c5b64a99SLinus Walleij ret = ab8500_chargalg_kick_watchdog(di); 1575c5b64a99SLinus Walleij if (ret < 0) 1576c5b64a99SLinus Walleij dev_err(di->dev, "failed to kick watchdog\n"); 1577c5b64a99SLinus Walleij 1578c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1579c5b64a99SLinus Walleij &di->chargalg_wd_work, CHG_WD_INTERVAL); 1580c5b64a99SLinus Walleij } 1581c5b64a99SLinus Walleij 1582c5b64a99SLinus Walleij /** 1583c5b64a99SLinus Walleij * ab8500_chargalg_work() - Work to run the charging algorithm instantly 1584c5b64a99SLinus Walleij * @work: pointer to the work_struct structure 1585c5b64a99SLinus Walleij * 1586c5b64a99SLinus Walleij * Work queue function for calling the charging algorithm 1587c5b64a99SLinus Walleij */ 1588c5b64a99SLinus Walleij static void ab8500_chargalg_work(struct work_struct *work) 1589c5b64a99SLinus Walleij { 1590c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(work, 1591c5b64a99SLinus Walleij struct ab8500_chargalg, chargalg_work); 1592c5b64a99SLinus Walleij 1593c5b64a99SLinus Walleij ab8500_chargalg_algorithm(di); 1594c5b64a99SLinus Walleij } 1595c5b64a99SLinus Walleij 1596c5b64a99SLinus Walleij /** 1597c5b64a99SLinus Walleij * ab8500_chargalg_get_property() - get the chargalg properties 1598c5b64a99SLinus Walleij * @psy: pointer to the power_supply structure 1599c5b64a99SLinus Walleij * @psp: pointer to the power_supply_property structure 1600c5b64a99SLinus Walleij * @val: pointer to the power_supply_propval union 1601c5b64a99SLinus Walleij * 1602c5b64a99SLinus Walleij * This function gets called when an application tries to get the 1603c5b64a99SLinus Walleij * chargalg properties by reading the sysfs files. 1604c5b64a99SLinus Walleij * status: charging/discharging/full/unknown 1605c5b64a99SLinus Walleij * health: health of the battery 1606c5b64a99SLinus Walleij * Returns error code in case of failure else 0 on success 1607c5b64a99SLinus Walleij */ 1608c5b64a99SLinus Walleij static int ab8500_chargalg_get_property(struct power_supply *psy, 1609c5b64a99SLinus Walleij enum power_supply_property psp, 1610c5b64a99SLinus Walleij union power_supply_propval *val) 1611c5b64a99SLinus Walleij { 1612c5b64a99SLinus Walleij struct ab8500_chargalg *di = power_supply_get_drvdata(psy); 1613c5b64a99SLinus Walleij 1614c5b64a99SLinus Walleij switch (psp) { 1615c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_STATUS: 1616c5b64a99SLinus Walleij val->intval = di->charge_status; 1617c5b64a99SLinus Walleij break; 1618c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_HEALTH: 1619c5b64a99SLinus Walleij if (di->events.batt_ovv) { 1620c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; 1621c5b64a99SLinus Walleij } else if (di->events.btemp_underover) { 162225fd3303SLinus Walleij if (di->batt_data.temp <= di->bm->bi->temp_min) 1623c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_COLD; 1624c5b64a99SLinus Walleij else 1625c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; 1626c5b64a99SLinus Walleij } else if (di->charge_state == STATE_SAFETY_TIMER_EXPIRED || 1627c5b64a99SLinus Walleij di->charge_state == STATE_SAFETY_TIMER_EXPIRED_INIT) { 1628c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; 1629c5b64a99SLinus Walleij } else { 1630c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_GOOD; 1631c5b64a99SLinus Walleij } 1632c5b64a99SLinus Walleij break; 1633c5b64a99SLinus Walleij default: 1634c5b64a99SLinus Walleij return -EINVAL; 1635c5b64a99SLinus Walleij } 1636c5b64a99SLinus Walleij return 0; 1637c5b64a99SLinus Walleij } 1638c5b64a99SLinus Walleij 1639c5b64a99SLinus Walleij static int __maybe_unused ab8500_chargalg_resume(struct device *dev) 1640c5b64a99SLinus Walleij { 1641c5b64a99SLinus Walleij struct ab8500_chargalg *di = dev_get_drvdata(dev); 1642c5b64a99SLinus Walleij 1643c5b64a99SLinus Walleij /* Kick charger watchdog if charging (any charger online) */ 1644c5b64a99SLinus Walleij if (di->chg_info.online_chg) 1645c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, &di->chargalg_wd_work, 0); 1646c5b64a99SLinus Walleij 1647c5b64a99SLinus Walleij /* 1648c5b64a99SLinus Walleij * Run the charging algorithm directly to be sure we don't 1649c5b64a99SLinus Walleij * do it too seldom 1650c5b64a99SLinus Walleij */ 1651c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0); 1652c5b64a99SLinus Walleij 1653c5b64a99SLinus Walleij return 0; 1654c5b64a99SLinus Walleij } 1655c5b64a99SLinus Walleij 1656c5b64a99SLinus Walleij static int __maybe_unused ab8500_chargalg_suspend(struct device *dev) 1657c5b64a99SLinus Walleij { 1658c5b64a99SLinus Walleij struct ab8500_chargalg *di = dev_get_drvdata(dev); 1659c5b64a99SLinus Walleij 1660c5b64a99SLinus Walleij if (di->chg_info.online_chg) 1661c5b64a99SLinus Walleij cancel_delayed_work_sync(&di->chargalg_wd_work); 1662c5b64a99SLinus Walleij 1663c5b64a99SLinus Walleij cancel_delayed_work_sync(&di->chargalg_periodic_work); 1664c5b64a99SLinus Walleij 1665c5b64a99SLinus Walleij return 0; 1666c5b64a99SLinus Walleij } 1667c5b64a99SLinus Walleij 1668c5b64a99SLinus Walleij static char *supply_interface[] = { 1669c5b64a99SLinus Walleij "ab8500_fg", 1670c5b64a99SLinus Walleij }; 1671c5b64a99SLinus Walleij 1672c5b64a99SLinus Walleij static const struct power_supply_desc ab8500_chargalg_desc = { 1673661d10eeSLinus Walleij .name = "ab8500_chargalg", 1674c5b64a99SLinus Walleij .type = POWER_SUPPLY_TYPE_BATTERY, 1675c5b64a99SLinus Walleij .properties = ab8500_chargalg_props, 1676c5b64a99SLinus Walleij .num_properties = ARRAY_SIZE(ab8500_chargalg_props), 1677c5b64a99SLinus Walleij .get_property = ab8500_chargalg_get_property, 1678c5b64a99SLinus Walleij .external_power_changed = ab8500_chargalg_external_power_changed, 1679c5b64a99SLinus Walleij }; 1680c5b64a99SLinus Walleij 1681c5b64a99SLinus Walleij static int ab8500_chargalg_bind(struct device *dev, struct device *master, 1682c5b64a99SLinus Walleij void *data) 1683c5b64a99SLinus Walleij { 1684c5b64a99SLinus Walleij struct ab8500_chargalg *di = dev_get_drvdata(dev); 1685c5b64a99SLinus Walleij 1686c5b64a99SLinus Walleij /* Create a work queue for the chargalg */ 1687c5b64a99SLinus Walleij di->chargalg_wq = alloc_ordered_workqueue("ab8500_chargalg_wq", 1688c5b64a99SLinus Walleij WQ_MEM_RECLAIM); 1689c5b64a99SLinus Walleij if (di->chargalg_wq == NULL) { 1690c5b64a99SLinus Walleij dev_err(di->dev, "failed to create work queue\n"); 1691c5b64a99SLinus Walleij return -ENOMEM; 1692c5b64a99SLinus Walleij } 1693c5b64a99SLinus Walleij 1694c5b64a99SLinus Walleij /* Run the charging algorithm */ 1695c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0); 1696c5b64a99SLinus Walleij 1697c5b64a99SLinus Walleij return 0; 1698c5b64a99SLinus Walleij } 1699c5b64a99SLinus Walleij 1700c5b64a99SLinus Walleij static void ab8500_chargalg_unbind(struct device *dev, struct device *master, 1701c5b64a99SLinus Walleij void *data) 1702c5b64a99SLinus Walleij { 1703c5b64a99SLinus Walleij struct ab8500_chargalg *di = dev_get_drvdata(dev); 1704c5b64a99SLinus Walleij 1705c5b64a99SLinus Walleij /* Stop all timers and work */ 1706c5b64a99SLinus Walleij hrtimer_cancel(&di->safety_timer); 1707c5b64a99SLinus Walleij hrtimer_cancel(&di->maintenance_timer); 1708c5b64a99SLinus Walleij 1709c5b64a99SLinus Walleij cancel_delayed_work_sync(&di->chargalg_periodic_work); 1710c5b64a99SLinus Walleij cancel_delayed_work_sync(&di->chargalg_wd_work); 1711c5b64a99SLinus Walleij cancel_work_sync(&di->chargalg_work); 1712c5b64a99SLinus Walleij 1713c5b64a99SLinus Walleij /* Delete the work queue */ 1714c5b64a99SLinus Walleij destroy_workqueue(di->chargalg_wq); 1715c5b64a99SLinus Walleij flush_scheduled_work(); 1716c5b64a99SLinus Walleij } 1717c5b64a99SLinus Walleij 1718c5b64a99SLinus Walleij static const struct component_ops ab8500_chargalg_component_ops = { 1719c5b64a99SLinus Walleij .bind = ab8500_chargalg_bind, 1720c5b64a99SLinus Walleij .unbind = ab8500_chargalg_unbind, 1721c5b64a99SLinus Walleij }; 1722c5b64a99SLinus Walleij 1723c5b64a99SLinus Walleij static int ab8500_chargalg_probe(struct platform_device *pdev) 1724c5b64a99SLinus Walleij { 1725c5b64a99SLinus Walleij struct device *dev = &pdev->dev; 1726c5b64a99SLinus Walleij struct power_supply_config psy_cfg = {}; 1727c5b64a99SLinus Walleij struct ab8500_chargalg *di; 1728c5b64a99SLinus Walleij 1729c5b64a99SLinus Walleij di = devm_kzalloc(dev, sizeof(*di), GFP_KERNEL); 1730c5b64a99SLinus Walleij if (!di) 1731c5b64a99SLinus Walleij return -ENOMEM; 1732c5b64a99SLinus Walleij 1733c5b64a99SLinus Walleij di->bm = &ab8500_bm_data; 1734c5b64a99SLinus Walleij 1735c5b64a99SLinus Walleij /* get device struct and parent */ 1736c5b64a99SLinus Walleij di->dev = dev; 1737c5b64a99SLinus Walleij di->parent = dev_get_drvdata(pdev->dev.parent); 1738c5b64a99SLinus Walleij 1739c5b64a99SLinus Walleij psy_cfg.supplied_to = supply_interface; 1740c5b64a99SLinus Walleij psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface); 1741c5b64a99SLinus Walleij psy_cfg.drv_data = di; 1742c5b64a99SLinus Walleij 1743c5b64a99SLinus Walleij /* Initilialize safety timer */ 1744c5b64a99SLinus Walleij hrtimer_init(&di->safety_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); 1745c5b64a99SLinus Walleij di->safety_timer.function = ab8500_chargalg_safety_timer_expired; 1746c5b64a99SLinus Walleij 1747c5b64a99SLinus Walleij /* Initilialize maintenance timer */ 1748c5b64a99SLinus Walleij hrtimer_init(&di->maintenance_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); 1749c5b64a99SLinus Walleij di->maintenance_timer.function = 1750c5b64a99SLinus Walleij ab8500_chargalg_maintenance_timer_expired; 1751c5b64a99SLinus Walleij 1752c5b64a99SLinus Walleij /* Init work for chargalg */ 1753c5b64a99SLinus Walleij INIT_DEFERRABLE_WORK(&di->chargalg_periodic_work, 1754c5b64a99SLinus Walleij ab8500_chargalg_periodic_work); 1755c5b64a99SLinus Walleij INIT_DEFERRABLE_WORK(&di->chargalg_wd_work, 1756c5b64a99SLinus Walleij ab8500_chargalg_wd_work); 1757c5b64a99SLinus Walleij 1758c5b64a99SLinus Walleij /* Init work for chargalg */ 1759c5b64a99SLinus Walleij INIT_WORK(&di->chargalg_work, ab8500_chargalg_work); 1760c5b64a99SLinus Walleij 1761c5b64a99SLinus Walleij /* To detect charger at startup */ 1762c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = -1; 1763c5b64a99SLinus Walleij 1764c5b64a99SLinus Walleij /* Register chargalg power supply class */ 1765c5b64a99SLinus Walleij di->chargalg_psy = devm_power_supply_register(di->dev, 1766c5b64a99SLinus Walleij &ab8500_chargalg_desc, 1767c5b64a99SLinus Walleij &psy_cfg); 1768c5b64a99SLinus Walleij if (IS_ERR(di->chargalg_psy)) { 1769c5b64a99SLinus Walleij dev_err(di->dev, "failed to register chargalg psy\n"); 1770c5b64a99SLinus Walleij return PTR_ERR(di->chargalg_psy); 1771c5b64a99SLinus Walleij } 1772c5b64a99SLinus Walleij 1773c5b64a99SLinus Walleij platform_set_drvdata(pdev, di); 1774c5b64a99SLinus Walleij 1775c5b64a99SLinus Walleij dev_info(di->dev, "probe success\n"); 1776c5b64a99SLinus Walleij return component_add(dev, &ab8500_chargalg_component_ops); 1777c5b64a99SLinus Walleij } 1778c5b64a99SLinus Walleij 1779c5b64a99SLinus Walleij static int ab8500_chargalg_remove(struct platform_device *pdev) 1780c5b64a99SLinus Walleij { 1781c5b64a99SLinus Walleij component_del(&pdev->dev, &ab8500_chargalg_component_ops); 1782c5b64a99SLinus Walleij 1783c5b64a99SLinus Walleij return 0; 1784c5b64a99SLinus Walleij } 1785c5b64a99SLinus Walleij 1786c5b64a99SLinus Walleij static SIMPLE_DEV_PM_OPS(ab8500_chargalg_pm_ops, ab8500_chargalg_suspend, ab8500_chargalg_resume); 1787c5b64a99SLinus Walleij 1788c5b64a99SLinus Walleij static const struct of_device_id ab8500_chargalg_match[] = { 1789c5b64a99SLinus Walleij { .compatible = "stericsson,ab8500-chargalg", }, 1790c5b64a99SLinus Walleij { }, 1791c5b64a99SLinus Walleij }; 1792c5b64a99SLinus Walleij 1793c5b64a99SLinus Walleij struct platform_driver ab8500_chargalg_driver = { 1794c5b64a99SLinus Walleij .probe = ab8500_chargalg_probe, 1795c5b64a99SLinus Walleij .remove = ab8500_chargalg_remove, 1796c5b64a99SLinus Walleij .driver = { 1797c5b64a99SLinus Walleij .name = "ab8500_chargalg", 1798c5b64a99SLinus Walleij .of_match_table = ab8500_chargalg_match, 1799c5b64a99SLinus Walleij .pm = &ab8500_chargalg_pm_ops, 1800c5b64a99SLinus Walleij }, 1801c5b64a99SLinus Walleij }; 1802c5b64a99SLinus Walleij MODULE_LICENSE("GPL v2"); 1803c5b64a99SLinus Walleij MODULE_AUTHOR("Johan Palsson, Karl Komierowski"); 1804c5b64a99SLinus Walleij MODULE_ALIAS("platform:ab8500-chargalg"); 1805c5b64a99SLinus Walleij MODULE_DESCRIPTION("ab8500 battery charging algorithm"); 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