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 4983e5aa77SLinus Walleij #define CHARGALG_CURR_STEP_LOW_UA 0 5083e5aa77SLinus Walleij #define CHARGALG_CURR_STEP_HIGH_UA 100000 51c5b64a99SLinus Walleij 521091ed7dSLinus Walleij /* 531091ed7dSLinus Walleij * This is the battery capacity limit that will trigger a new 541091ed7dSLinus Walleij * full charging cycle in the case where maintenance charging 551091ed7dSLinus Walleij * has been disabled 561091ed7dSLinus Walleij */ 571091ed7dSLinus Walleij #define AB8500_RECHARGE_CAP 95 581091ed7dSLinus Walleij 59c5b64a99SLinus Walleij enum ab8500_chargers { 60c5b64a99SLinus Walleij NO_CHG, 61c5b64a99SLinus Walleij AC_CHG, 62c5b64a99SLinus Walleij USB_CHG, 63c5b64a99SLinus Walleij }; 64c5b64a99SLinus Walleij 65c5b64a99SLinus Walleij struct ab8500_chargalg_charger_info { 66c5b64a99SLinus Walleij enum ab8500_chargers conn_chg; 67c5b64a99SLinus Walleij enum ab8500_chargers prev_conn_chg; 68c5b64a99SLinus Walleij enum ab8500_chargers online_chg; 69c5b64a99SLinus Walleij enum ab8500_chargers prev_online_chg; 70c5b64a99SLinus Walleij enum ab8500_chargers charger_type; 71c5b64a99SLinus Walleij bool usb_chg_ok; 72c5b64a99SLinus Walleij bool ac_chg_ok; 73bc6e0287SLinus Walleij int usb_volt_uv; 7483e5aa77SLinus Walleij int usb_curr_ua; 75bc6e0287SLinus Walleij int ac_volt_uv; 7683e5aa77SLinus Walleij int ac_curr_ua; 77bc6e0287SLinus Walleij int usb_vset_uv; 7883e5aa77SLinus Walleij int usb_iset_ua; 79bc6e0287SLinus Walleij int ac_vset_uv; 8083e5aa77SLinus Walleij int ac_iset_ua; 81c5b64a99SLinus Walleij }; 82c5b64a99SLinus Walleij 83c5b64a99SLinus Walleij struct ab8500_chargalg_suspension_status { 84c5b64a99SLinus Walleij bool suspended_change; 85c5b64a99SLinus Walleij bool ac_suspended; 86c5b64a99SLinus Walleij bool usb_suspended; 87c5b64a99SLinus Walleij }; 88c5b64a99SLinus Walleij 89c5b64a99SLinus Walleij struct ab8500_chargalg_current_step_status { 90c5b64a99SLinus Walleij bool curr_step_change; 9183e5aa77SLinus Walleij int curr_step_ua; 92c5b64a99SLinus Walleij }; 93c5b64a99SLinus Walleij 94c5b64a99SLinus Walleij struct ab8500_chargalg_battery_data { 95c5b64a99SLinus Walleij int temp; 962a5f4183SLinus Walleij int volt_uv; 979c20899dSLinus Walleij int avg_curr_ua; 9883e5aa77SLinus Walleij int inst_curr_ua; 99c5b64a99SLinus Walleij int percent; 100c5b64a99SLinus Walleij }; 101c5b64a99SLinus Walleij 102c5b64a99SLinus Walleij enum ab8500_chargalg_states { 103c5b64a99SLinus Walleij STATE_HANDHELD_INIT, 104c5b64a99SLinus Walleij STATE_HANDHELD, 105c5b64a99SLinus Walleij STATE_CHG_NOT_OK_INIT, 106c5b64a99SLinus Walleij STATE_CHG_NOT_OK, 107c5b64a99SLinus Walleij STATE_HW_TEMP_PROTECT_INIT, 108c5b64a99SLinus Walleij STATE_HW_TEMP_PROTECT, 109c5b64a99SLinus Walleij STATE_NORMAL_INIT, 110c5b64a99SLinus Walleij STATE_NORMAL, 111c5b64a99SLinus Walleij STATE_WAIT_FOR_RECHARGE_INIT, 112c5b64a99SLinus Walleij STATE_WAIT_FOR_RECHARGE, 113c5b64a99SLinus Walleij STATE_MAINTENANCE_A_INIT, 114c5b64a99SLinus Walleij STATE_MAINTENANCE_A, 115c5b64a99SLinus Walleij STATE_MAINTENANCE_B_INIT, 116c5b64a99SLinus Walleij STATE_MAINTENANCE_B, 117c5b64a99SLinus Walleij STATE_TEMP_UNDEROVER_INIT, 118c5b64a99SLinus Walleij STATE_TEMP_UNDEROVER, 119c5b64a99SLinus Walleij STATE_TEMP_LOWHIGH_INIT, 120c5b64a99SLinus Walleij STATE_TEMP_LOWHIGH, 121c5b64a99SLinus Walleij STATE_SUSPENDED_INIT, 122c5b64a99SLinus Walleij STATE_SUSPENDED, 123c5b64a99SLinus Walleij STATE_OVV_PROTECT_INIT, 124c5b64a99SLinus Walleij STATE_OVV_PROTECT, 125c5b64a99SLinus Walleij STATE_SAFETY_TIMER_EXPIRED_INIT, 126c5b64a99SLinus Walleij STATE_SAFETY_TIMER_EXPIRED, 127c5b64a99SLinus Walleij STATE_BATT_REMOVED_INIT, 128c5b64a99SLinus Walleij STATE_BATT_REMOVED, 129c5b64a99SLinus Walleij STATE_WD_EXPIRED_INIT, 130c5b64a99SLinus Walleij STATE_WD_EXPIRED, 131c5b64a99SLinus Walleij }; 132c5b64a99SLinus Walleij 13338334231SColin Ian King static const char * const states[] = { 134c5b64a99SLinus Walleij "HANDHELD_INIT", 135c5b64a99SLinus Walleij "HANDHELD", 136c5b64a99SLinus Walleij "CHG_NOT_OK_INIT", 137c5b64a99SLinus Walleij "CHG_NOT_OK", 138c5b64a99SLinus Walleij "HW_TEMP_PROTECT_INIT", 139c5b64a99SLinus Walleij "HW_TEMP_PROTECT", 140c5b64a99SLinus Walleij "NORMAL_INIT", 141c5b64a99SLinus Walleij "NORMAL", 142c5b64a99SLinus Walleij "WAIT_FOR_RECHARGE_INIT", 143c5b64a99SLinus Walleij "WAIT_FOR_RECHARGE", 144c5b64a99SLinus Walleij "MAINTENANCE_A_INIT", 145c5b64a99SLinus Walleij "MAINTENANCE_A", 146c5b64a99SLinus Walleij "MAINTENANCE_B_INIT", 147c5b64a99SLinus Walleij "MAINTENANCE_B", 148c5b64a99SLinus Walleij "TEMP_UNDEROVER_INIT", 149c5b64a99SLinus Walleij "TEMP_UNDEROVER", 150c5b64a99SLinus Walleij "TEMP_LOWHIGH_INIT", 151c5b64a99SLinus Walleij "TEMP_LOWHIGH", 152c5b64a99SLinus Walleij "SUSPENDED_INIT", 153c5b64a99SLinus Walleij "SUSPENDED", 154c5b64a99SLinus Walleij "OVV_PROTECT_INIT", 155c5b64a99SLinus Walleij "OVV_PROTECT", 156c5b64a99SLinus Walleij "SAFETY_TIMER_EXPIRED_INIT", 157c5b64a99SLinus Walleij "SAFETY_TIMER_EXPIRED", 158c5b64a99SLinus Walleij "BATT_REMOVED_INIT", 159c5b64a99SLinus Walleij "BATT_REMOVED", 160c5b64a99SLinus Walleij "WD_EXPIRED_INIT", 161c5b64a99SLinus Walleij "WD_EXPIRED", 162c5b64a99SLinus Walleij }; 163c5b64a99SLinus Walleij 164c5b64a99SLinus Walleij struct ab8500_chargalg_events { 165c5b64a99SLinus Walleij bool batt_unknown; 166c5b64a99SLinus Walleij bool mainextchnotok; 167c5b64a99SLinus Walleij bool batt_ovv; 168c5b64a99SLinus Walleij bool batt_rem; 169c5b64a99SLinus Walleij bool btemp_underover; 170c5b64a99SLinus Walleij bool btemp_lowhigh; 171c5b64a99SLinus Walleij bool main_thermal_prot; 172c5b64a99SLinus Walleij bool usb_thermal_prot; 173c5b64a99SLinus Walleij bool main_ovv; 174c5b64a99SLinus Walleij bool vbus_ovv; 175c5b64a99SLinus Walleij bool usbchargernotok; 176c5b64a99SLinus Walleij bool safety_timer_expired; 177c5b64a99SLinus Walleij bool maintenance_timer_expired; 178c5b64a99SLinus Walleij bool ac_wd_expired; 179c5b64a99SLinus Walleij bool usb_wd_expired; 180c5b64a99SLinus Walleij bool ac_cv_active; 181c5b64a99SLinus Walleij bool usb_cv_active; 182c5b64a99SLinus Walleij bool vbus_collapsed; 183c5b64a99SLinus Walleij }; 184c5b64a99SLinus Walleij 185c5b64a99SLinus Walleij /** 186c5b64a99SLinus Walleij * struct ab8500_charge_curr_maximization - Charger maximization parameters 18783e5aa77SLinus Walleij * @original_iset_ua: the non optimized/maximised charger current 18883e5aa77SLinus Walleij * @current_iset_ua: the charging current used at this moment 18983e5aa77SLinus Walleij * @test_delta_i_ua: the delta between the current we want to charge and the 190c5b64a99SLinus Walleij current that is really going into the battery 191c5b64a99SLinus Walleij * @condition_cnt: number of iterations needed before a new charger current 192c5b64a99SLinus Walleij is set 19383e5aa77SLinus Walleij * @max_current_ua: maximum charger current 194c5b64a99SLinus Walleij * @wait_cnt: to avoid too fast current step down in case of charger 195c5b64a99SLinus Walleij * voltage collapse, we insert this delay between step 196c5b64a99SLinus Walleij * down 197c5b64a99SLinus Walleij * @level: tells in how many steps the charging current has been 198c5b64a99SLinus Walleij increased 199c5b64a99SLinus Walleij */ 200c5b64a99SLinus Walleij struct ab8500_charge_curr_maximization { 20183e5aa77SLinus Walleij int original_iset_ua; 20283e5aa77SLinus Walleij int current_iset_ua; 20383e5aa77SLinus Walleij int test_delta_i_ua; 204c5b64a99SLinus Walleij int condition_cnt; 20583e5aa77SLinus Walleij int max_current_ua; 206c5b64a99SLinus Walleij int wait_cnt; 207c5b64a99SLinus Walleij u8 level; 208c5b64a99SLinus Walleij }; 209c5b64a99SLinus Walleij 210c5b64a99SLinus Walleij enum maxim_ret { 211c5b64a99SLinus Walleij MAXIM_RET_NOACTION, 212c5b64a99SLinus Walleij MAXIM_RET_CHANGE, 213c5b64a99SLinus Walleij MAXIM_RET_IBAT_TOO_HIGH, 214c5b64a99SLinus Walleij }; 215c5b64a99SLinus Walleij 216c5b64a99SLinus Walleij /** 217c5b64a99SLinus Walleij * struct ab8500_chargalg - ab8500 Charging algorithm device information 218c5b64a99SLinus Walleij * @dev: pointer to the structure device 219c5b64a99SLinus Walleij * @charge_status: battery operating status 220c5b64a99SLinus Walleij * @eoc_cnt: counter used to determine end-of_charge 221c5b64a99SLinus Walleij * @maintenance_chg: indicate if maintenance charge is active 222c5b64a99SLinus Walleij * @t_hyst_norm temperature hysteresis when the temperature has been 223c5b64a99SLinus Walleij * over or under normal limits 224c5b64a99SLinus Walleij * @t_hyst_lowhigh temperature hysteresis when the temperature has been 225c5b64a99SLinus Walleij * over or under the high or low limits 226c5b64a99SLinus Walleij * @charge_state: current state of the charging algorithm 227c5b64a99SLinus Walleij * @ccm charging current maximization parameters 228c5b64a99SLinus Walleij * @chg_info: information about connected charger types 229c5b64a99SLinus Walleij * @batt_data: data of the battery 230c5b64a99SLinus Walleij * @susp_status: current charger suspension status 231c5b64a99SLinus Walleij * @bm: Platform specific battery management information 232c5b64a99SLinus Walleij * @curr_status: Current step status for over-current protection 233c5b64a99SLinus Walleij * @parent: pointer to the struct ab8500 234c5b64a99SLinus Walleij * @chargalg_psy: structure that holds the battery properties exposed by 235c5b64a99SLinus Walleij * the charging algorithm 236c5b64a99SLinus Walleij * @events: structure for information about events triggered 237c5b64a99SLinus Walleij * @chargalg_wq: work queue for running the charging algorithm 238c5b64a99SLinus Walleij * @chargalg_periodic_work: work to run the charging algorithm periodically 239c5b64a99SLinus Walleij * @chargalg_wd_work: work to kick the charger watchdog periodically 240c5b64a99SLinus Walleij * @chargalg_work: work to run the charging algorithm instantly 241c5b64a99SLinus Walleij * @safety_timer: charging safety timer 242c5b64a99SLinus Walleij * @maintenance_timer: maintenance charging timer 243c5b64a99SLinus Walleij * @chargalg_kobject: structure of type kobject 244c5b64a99SLinus Walleij */ 245c5b64a99SLinus Walleij struct ab8500_chargalg { 246c5b64a99SLinus Walleij struct device *dev; 247c5b64a99SLinus Walleij int charge_status; 248c5b64a99SLinus Walleij int eoc_cnt; 249c5b64a99SLinus Walleij bool maintenance_chg; 250c5b64a99SLinus Walleij int t_hyst_norm; 251c5b64a99SLinus Walleij int t_hyst_lowhigh; 252c5b64a99SLinus Walleij enum ab8500_chargalg_states charge_state; 253c5b64a99SLinus Walleij struct ab8500_charge_curr_maximization ccm; 254c5b64a99SLinus Walleij struct ab8500_chargalg_charger_info chg_info; 255c5b64a99SLinus Walleij struct ab8500_chargalg_battery_data batt_data; 256c5b64a99SLinus Walleij struct ab8500_chargalg_suspension_status susp_status; 257c5b64a99SLinus Walleij struct ab8500 *parent; 258c5b64a99SLinus Walleij struct ab8500_chargalg_current_step_status curr_status; 259484a9cc3SLinus Walleij struct ab8500_bm_data *bm; 260c5b64a99SLinus Walleij struct power_supply *chargalg_psy; 261c5b64a99SLinus Walleij struct ux500_charger *ac_chg; 262c5b64a99SLinus Walleij struct ux500_charger *usb_chg; 263c5b64a99SLinus Walleij struct ab8500_chargalg_events events; 264c5b64a99SLinus Walleij struct workqueue_struct *chargalg_wq; 265c5b64a99SLinus Walleij struct delayed_work chargalg_periodic_work; 266c5b64a99SLinus Walleij struct delayed_work chargalg_wd_work; 267c5b64a99SLinus Walleij struct work_struct chargalg_work; 268c5b64a99SLinus Walleij struct hrtimer safety_timer; 269c5b64a99SLinus Walleij struct hrtimer maintenance_timer; 270c5b64a99SLinus Walleij struct kobject chargalg_kobject; 271c5b64a99SLinus Walleij }; 272c5b64a99SLinus Walleij 273c5b64a99SLinus Walleij /*External charger prepare notifier*/ 274c5b64a99SLinus Walleij BLOCKING_NOTIFIER_HEAD(charger_notifier_list); 275c5b64a99SLinus Walleij 276c5b64a99SLinus Walleij /* Main battery properties */ 277c5b64a99SLinus Walleij static enum power_supply_property ab8500_chargalg_props[] = { 278c5b64a99SLinus Walleij POWER_SUPPLY_PROP_STATUS, 279c5b64a99SLinus Walleij POWER_SUPPLY_PROP_HEALTH, 280c5b64a99SLinus Walleij }; 281c5b64a99SLinus Walleij 282c5b64a99SLinus Walleij struct ab8500_chargalg_sysfs_entry { 283c5b64a99SLinus Walleij struct attribute attr; 28438334231SColin Ian King ssize_t (*show)(struct ab8500_chargalg *di, char *buf); 28538334231SColin Ian King ssize_t (*store)(struct ab8500_chargalg *di, const char *buf, size_t length); 286c5b64a99SLinus Walleij }; 287c5b64a99SLinus Walleij 288c5b64a99SLinus Walleij /** 289c5b64a99SLinus Walleij * ab8500_chargalg_safety_timer_expired() - Expiration of the safety timer 290c5b64a99SLinus Walleij * @timer: pointer to the hrtimer structure 291c5b64a99SLinus Walleij * 292c5b64a99SLinus Walleij * This function gets called when the safety timer for the charger 293c5b64a99SLinus Walleij * expires 294c5b64a99SLinus Walleij */ 295c5b64a99SLinus Walleij static enum hrtimer_restart 296c5b64a99SLinus Walleij ab8500_chargalg_safety_timer_expired(struct hrtimer *timer) 297c5b64a99SLinus Walleij { 298c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(timer, struct ab8500_chargalg, 299c5b64a99SLinus Walleij safety_timer); 300c5b64a99SLinus Walleij dev_err(di->dev, "Safety timer expired\n"); 301c5b64a99SLinus Walleij di->events.safety_timer_expired = true; 302c5b64a99SLinus Walleij 303c5b64a99SLinus Walleij /* Trigger execution of the algorithm instantly */ 304c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 305c5b64a99SLinus Walleij 306c5b64a99SLinus Walleij return HRTIMER_NORESTART; 307c5b64a99SLinus Walleij } 308c5b64a99SLinus Walleij 309c5b64a99SLinus Walleij /** 310c5b64a99SLinus Walleij * ab8500_chargalg_maintenance_timer_expired() - Expiration of 311c5b64a99SLinus Walleij * the maintenance timer 312c5b64a99SLinus Walleij * @timer: pointer to the timer structure 313c5b64a99SLinus Walleij * 314c5b64a99SLinus Walleij * This function gets called when the maintenence timer 315c5b64a99SLinus Walleij * expires 316c5b64a99SLinus Walleij */ 317c5b64a99SLinus Walleij static enum hrtimer_restart 318c5b64a99SLinus Walleij ab8500_chargalg_maintenance_timer_expired(struct hrtimer *timer) 319c5b64a99SLinus Walleij { 320c5b64a99SLinus Walleij 321c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(timer, struct ab8500_chargalg, 322c5b64a99SLinus Walleij maintenance_timer); 323c5b64a99SLinus Walleij 324c5b64a99SLinus Walleij dev_dbg(di->dev, "Maintenance timer expired\n"); 325c5b64a99SLinus Walleij di->events.maintenance_timer_expired = true; 326c5b64a99SLinus Walleij 327c5b64a99SLinus Walleij /* Trigger execution of the algorithm instantly */ 328c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 329c5b64a99SLinus Walleij 330c5b64a99SLinus Walleij return HRTIMER_NORESTART; 331c5b64a99SLinus Walleij } 332c5b64a99SLinus Walleij 333c5b64a99SLinus Walleij /** 334c5b64a99SLinus Walleij * ab8500_chargalg_state_to() - Change charge state 335c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 336c5b64a99SLinus Walleij * 337c5b64a99SLinus Walleij * This function gets called when a charge state change should occur 338c5b64a99SLinus Walleij */ 339c5b64a99SLinus Walleij static void ab8500_chargalg_state_to(struct ab8500_chargalg *di, 340c5b64a99SLinus Walleij enum ab8500_chargalg_states state) 341c5b64a99SLinus Walleij { 342c5b64a99SLinus Walleij dev_dbg(di->dev, 343c5b64a99SLinus Walleij "State changed: %s (From state: [%d] %s =to=> [%d] %s )\n", 344c5b64a99SLinus Walleij di->charge_state == state ? "NO" : "YES", 345c5b64a99SLinus Walleij di->charge_state, 346c5b64a99SLinus Walleij states[di->charge_state], 347c5b64a99SLinus Walleij state, 348c5b64a99SLinus Walleij states[state]); 349c5b64a99SLinus Walleij 350c5b64a99SLinus Walleij di->charge_state = state; 351c5b64a99SLinus Walleij } 352c5b64a99SLinus Walleij 353c5b64a99SLinus Walleij static int ab8500_chargalg_check_charger_enable(struct ab8500_chargalg *di) 354c5b64a99SLinus Walleij { 355*25fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 35683e5aa77SLinus Walleij 357c5b64a99SLinus Walleij switch (di->charge_state) { 358c5b64a99SLinus Walleij case STATE_NORMAL: 359c5b64a99SLinus Walleij case STATE_MAINTENANCE_A: 360c5b64a99SLinus Walleij case STATE_MAINTENANCE_B: 361c5b64a99SLinus Walleij break; 362c5b64a99SLinus Walleij default: 363c5b64a99SLinus Walleij return 0; 364c5b64a99SLinus Walleij } 365c5b64a99SLinus Walleij 366c5b64a99SLinus Walleij if (di->chg_info.charger_type & USB_CHG) { 367c5b64a99SLinus Walleij return di->usb_chg->ops.check_enable(di->usb_chg, 368bc6e0287SLinus Walleij bi->constant_charge_voltage_max_uv, 36983e5aa77SLinus Walleij bi->constant_charge_current_max_ua); 370c5b64a99SLinus Walleij } else if ((di->chg_info.charger_type & AC_CHG) && 371c5b64a99SLinus Walleij !(di->ac_chg->external)) { 372c5b64a99SLinus Walleij return di->ac_chg->ops.check_enable(di->ac_chg, 373bc6e0287SLinus Walleij bi->constant_charge_voltage_max_uv, 37483e5aa77SLinus Walleij bi->constant_charge_current_max_ua); 375c5b64a99SLinus Walleij } 376c5b64a99SLinus Walleij return 0; 377c5b64a99SLinus Walleij } 378c5b64a99SLinus Walleij 379c5b64a99SLinus Walleij /** 380c5b64a99SLinus Walleij * ab8500_chargalg_check_charger_connection() - Check charger connection change 381c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 382c5b64a99SLinus Walleij * 383c5b64a99SLinus Walleij * This function will check if there is a change in the charger connection 384c5b64a99SLinus Walleij * and change charge state accordingly. AC has precedence over USB. 385c5b64a99SLinus Walleij */ 386c5b64a99SLinus Walleij static int ab8500_chargalg_check_charger_connection(struct ab8500_chargalg *di) 387c5b64a99SLinus Walleij { 388c5b64a99SLinus Walleij if (di->chg_info.conn_chg != di->chg_info.prev_conn_chg || 389c5b64a99SLinus Walleij di->susp_status.suspended_change) { 390c5b64a99SLinus Walleij /* 391c5b64a99SLinus Walleij * Charger state changed or suspension 392c5b64a99SLinus Walleij * has changed since last update 393c5b64a99SLinus Walleij */ 394c5b64a99SLinus Walleij if ((di->chg_info.conn_chg & AC_CHG) && 395c5b64a99SLinus Walleij !di->susp_status.ac_suspended) { 396c5b64a99SLinus Walleij dev_dbg(di->dev, "Charging source is AC\n"); 397c5b64a99SLinus Walleij if (di->chg_info.charger_type != AC_CHG) { 398c5b64a99SLinus Walleij di->chg_info.charger_type = AC_CHG; 399c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 400c5b64a99SLinus Walleij } 401c5b64a99SLinus Walleij } else if ((di->chg_info.conn_chg & USB_CHG) && 402c5b64a99SLinus Walleij !di->susp_status.usb_suspended) { 403c5b64a99SLinus Walleij dev_dbg(di->dev, "Charging source is USB\n"); 404c5b64a99SLinus Walleij di->chg_info.charger_type = USB_CHG; 405c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 406c5b64a99SLinus Walleij } else if (di->chg_info.conn_chg && 407c5b64a99SLinus Walleij (di->susp_status.ac_suspended || 408c5b64a99SLinus Walleij di->susp_status.usb_suspended)) { 409c5b64a99SLinus Walleij dev_dbg(di->dev, "Charging is suspended\n"); 410c5b64a99SLinus Walleij di->chg_info.charger_type = NO_CHG; 411c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_SUSPENDED_INIT); 412c5b64a99SLinus Walleij } else { 413c5b64a99SLinus Walleij dev_dbg(di->dev, "Charging source is OFF\n"); 414c5b64a99SLinus Walleij di->chg_info.charger_type = NO_CHG; 415c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_HANDHELD_INIT); 416c5b64a99SLinus Walleij } 417c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = di->chg_info.conn_chg; 418c5b64a99SLinus Walleij di->susp_status.suspended_change = false; 419c5b64a99SLinus Walleij } 420c5b64a99SLinus Walleij return di->chg_info.conn_chg; 421c5b64a99SLinus Walleij } 422c5b64a99SLinus Walleij 423c5b64a99SLinus Walleij /** 424c5b64a99SLinus Walleij * ab8500_chargalg_check_current_step_status() - Check charging current 425c5b64a99SLinus Walleij * step status. 426c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 427c5b64a99SLinus Walleij * 428c5b64a99SLinus Walleij * This function will check if there is a change in the charging current step 429c5b64a99SLinus Walleij * and change charge state accordingly. 430c5b64a99SLinus Walleij */ 431c5b64a99SLinus Walleij static void ab8500_chargalg_check_current_step_status 432c5b64a99SLinus Walleij (struct ab8500_chargalg *di) 433c5b64a99SLinus Walleij { 434c5b64a99SLinus Walleij if (di->curr_status.curr_step_change) 435c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 436c5b64a99SLinus Walleij di->curr_status.curr_step_change = false; 437c5b64a99SLinus Walleij } 438c5b64a99SLinus Walleij 439c5b64a99SLinus Walleij /** 440c5b64a99SLinus Walleij * ab8500_chargalg_start_safety_timer() - Start charging safety timer 441c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 442c5b64a99SLinus Walleij * 443c5b64a99SLinus Walleij * The safety timer is used to avoid overcharging of old or bad batteries. 444c5b64a99SLinus Walleij * There are different timers for AC and USB 445c5b64a99SLinus Walleij */ 446c5b64a99SLinus Walleij static void ab8500_chargalg_start_safety_timer(struct ab8500_chargalg *di) 447c5b64a99SLinus Walleij { 448c5b64a99SLinus Walleij /* Charger-dependent expiration time in hours*/ 449c5b64a99SLinus Walleij int timer_expiration = 0; 450c5b64a99SLinus Walleij 451c5b64a99SLinus Walleij switch (di->chg_info.charger_type) { 452c5b64a99SLinus Walleij case AC_CHG: 453c5b64a99SLinus Walleij timer_expiration = di->bm->main_safety_tmr_h; 454c5b64a99SLinus Walleij break; 455c5b64a99SLinus Walleij 456c5b64a99SLinus Walleij case USB_CHG: 457c5b64a99SLinus Walleij timer_expiration = di->bm->usb_safety_tmr_h; 458c5b64a99SLinus Walleij break; 459c5b64a99SLinus Walleij 460c5b64a99SLinus Walleij default: 461c5b64a99SLinus Walleij dev_err(di->dev, "Unknown charger to charge from\n"); 462c5b64a99SLinus Walleij break; 463c5b64a99SLinus Walleij } 464c5b64a99SLinus Walleij 465c5b64a99SLinus Walleij di->events.safety_timer_expired = false; 466c5b64a99SLinus Walleij hrtimer_set_expires_range(&di->safety_timer, 467c5b64a99SLinus Walleij ktime_set(timer_expiration * ONE_HOUR_IN_SECONDS, 0), 468c5b64a99SLinus Walleij ktime_set(FIVE_MINUTES_IN_SECONDS, 0)); 469c5b64a99SLinus Walleij hrtimer_start_expires(&di->safety_timer, HRTIMER_MODE_REL); 470c5b64a99SLinus Walleij } 471c5b64a99SLinus Walleij 472c5b64a99SLinus Walleij /** 473c5b64a99SLinus Walleij * ab8500_chargalg_stop_safety_timer() - Stop charging safety timer 474c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 475c5b64a99SLinus Walleij * 476c5b64a99SLinus Walleij * The safety timer is stopped whenever the NORMAL state is exited 477c5b64a99SLinus Walleij */ 478c5b64a99SLinus Walleij static void ab8500_chargalg_stop_safety_timer(struct ab8500_chargalg *di) 479c5b64a99SLinus Walleij { 480c5b64a99SLinus Walleij if (hrtimer_try_to_cancel(&di->safety_timer) >= 0) 481c5b64a99SLinus Walleij di->events.safety_timer_expired = false; 482c5b64a99SLinus Walleij } 483c5b64a99SLinus Walleij 484c5b64a99SLinus Walleij /** 485c5b64a99SLinus Walleij * ab8500_chargalg_start_maintenance_timer() - Start charging maintenance timer 486c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 487c5b64a99SLinus Walleij * @duration: duration of ther maintenance timer in hours 488c5b64a99SLinus Walleij * 489c5b64a99SLinus Walleij * The maintenance timer is used to maintain the charge in the battery once 490c5b64a99SLinus Walleij * the battery is considered full. These timers are chosen to match the 491c5b64a99SLinus Walleij * discharge curve of the battery 492c5b64a99SLinus Walleij */ 493c5b64a99SLinus Walleij static void ab8500_chargalg_start_maintenance_timer(struct ab8500_chargalg *di, 494c5b64a99SLinus Walleij int duration) 495c5b64a99SLinus Walleij { 496c5b64a99SLinus Walleij hrtimer_set_expires_range(&di->maintenance_timer, 497c5b64a99SLinus Walleij ktime_set(duration * ONE_HOUR_IN_SECONDS, 0), 498c5b64a99SLinus Walleij ktime_set(FIVE_MINUTES_IN_SECONDS, 0)); 499c5b64a99SLinus Walleij di->events.maintenance_timer_expired = false; 500c5b64a99SLinus Walleij hrtimer_start_expires(&di->maintenance_timer, HRTIMER_MODE_REL); 501c5b64a99SLinus Walleij } 502c5b64a99SLinus Walleij 503c5b64a99SLinus Walleij /** 504c5b64a99SLinus Walleij * ab8500_chargalg_stop_maintenance_timer() - Stop maintenance timer 505c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 506c5b64a99SLinus Walleij * 507c5b64a99SLinus Walleij * The maintenance timer is stopped whenever maintenance ends or when another 508c5b64a99SLinus Walleij * state is entered 509c5b64a99SLinus Walleij */ 510c5b64a99SLinus Walleij static void ab8500_chargalg_stop_maintenance_timer(struct ab8500_chargalg *di) 511c5b64a99SLinus Walleij { 512c5b64a99SLinus Walleij if (hrtimer_try_to_cancel(&di->maintenance_timer) >= 0) 513c5b64a99SLinus Walleij di->events.maintenance_timer_expired = false; 514c5b64a99SLinus Walleij } 515c5b64a99SLinus Walleij 516c5b64a99SLinus Walleij /** 517c5b64a99SLinus Walleij * ab8500_chargalg_kick_watchdog() - Kick charger watchdog 518c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 519c5b64a99SLinus Walleij * 520c5b64a99SLinus Walleij * The charger watchdog have to be kicked periodically whenever the charger is 521c5b64a99SLinus Walleij * on, else the ABB will reset the system 522c5b64a99SLinus Walleij */ 523c5b64a99SLinus Walleij static int ab8500_chargalg_kick_watchdog(struct ab8500_chargalg *di) 524c5b64a99SLinus Walleij { 525c5b64a99SLinus Walleij /* Check if charger exists and kick watchdog if charging */ 526c5b64a99SLinus Walleij if (di->ac_chg && di->ac_chg->ops.kick_wd && 527c5b64a99SLinus Walleij di->chg_info.online_chg & AC_CHG) { 528c5b64a99SLinus Walleij /* 529c5b64a99SLinus Walleij * If AB charger watchdog expired, pm2xxx charging 530c5b64a99SLinus Walleij * gets disabled. To be safe, kick both AB charger watchdog 531c5b64a99SLinus Walleij * and pm2xxx watchdog. 532c5b64a99SLinus Walleij */ 533c5b64a99SLinus Walleij if (di->ac_chg->external && 534c5b64a99SLinus Walleij di->usb_chg && di->usb_chg->ops.kick_wd) 535c5b64a99SLinus Walleij di->usb_chg->ops.kick_wd(di->usb_chg); 536c5b64a99SLinus Walleij 537c5b64a99SLinus Walleij return di->ac_chg->ops.kick_wd(di->ac_chg); 53838334231SColin Ian King } else if (di->usb_chg && di->usb_chg->ops.kick_wd && 539c5b64a99SLinus Walleij di->chg_info.online_chg & USB_CHG) 540c5b64a99SLinus Walleij return di->usb_chg->ops.kick_wd(di->usb_chg); 541c5b64a99SLinus Walleij 542c5b64a99SLinus Walleij return -ENXIO; 543c5b64a99SLinus Walleij } 544c5b64a99SLinus Walleij 545c5b64a99SLinus Walleij /** 546c5b64a99SLinus Walleij * ab8500_chargalg_ac_en() - Turn on/off the AC charger 547c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 548c5b64a99SLinus Walleij * @enable: charger on/off 549bc6e0287SLinus Walleij * @vset_uv: requested charger output voltage in microvolt 55083e5aa77SLinus Walleij * @iset_ua: requested charger output current in microampere 551c5b64a99SLinus Walleij * 552c5b64a99SLinus Walleij * The AC charger will be turned on/off with the requested charge voltage and 553c5b64a99SLinus Walleij * current 554c5b64a99SLinus Walleij */ 555c5b64a99SLinus Walleij static int ab8500_chargalg_ac_en(struct ab8500_chargalg *di, int enable, 556bc6e0287SLinus Walleij int vset_uv, int iset_ua) 557c5b64a99SLinus Walleij { 558c5b64a99SLinus Walleij static int ab8500_chargalg_ex_ac_enable_toggle; 559c5b64a99SLinus Walleij 560c5b64a99SLinus Walleij if (!di->ac_chg || !di->ac_chg->ops.enable) 561c5b64a99SLinus Walleij return -ENXIO; 562c5b64a99SLinus Walleij 563c5b64a99SLinus Walleij /* Select maximum of what both the charger and the battery supports */ 564bc6e0287SLinus Walleij if (di->ac_chg->max_out_volt_uv) 565bc6e0287SLinus Walleij vset_uv = min(vset_uv, di->ac_chg->max_out_volt_uv); 56683e5aa77SLinus Walleij if (di->ac_chg->max_out_curr_ua) 56783e5aa77SLinus Walleij iset_ua = min(iset_ua, di->ac_chg->max_out_curr_ua); 568c5b64a99SLinus Walleij 56983e5aa77SLinus Walleij di->chg_info.ac_iset_ua = iset_ua; 570bc6e0287SLinus Walleij di->chg_info.ac_vset_uv = vset_uv; 571c5b64a99SLinus Walleij 572c5b64a99SLinus Walleij /* Enable external charger */ 573c5b64a99SLinus Walleij if (enable && di->ac_chg->external && 574c5b64a99SLinus Walleij !ab8500_chargalg_ex_ac_enable_toggle) { 575c5b64a99SLinus Walleij blocking_notifier_call_chain(&charger_notifier_list, 576c5b64a99SLinus Walleij 0, di->dev); 577c5b64a99SLinus Walleij ab8500_chargalg_ex_ac_enable_toggle++; 578c5b64a99SLinus Walleij } 579c5b64a99SLinus Walleij 580bc6e0287SLinus Walleij return di->ac_chg->ops.enable(di->ac_chg, enable, vset_uv, iset_ua); 581c5b64a99SLinus Walleij } 582c5b64a99SLinus Walleij 583c5b64a99SLinus Walleij /** 584c5b64a99SLinus Walleij * ab8500_chargalg_usb_en() - Turn on/off the USB charger 585c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 586c5b64a99SLinus Walleij * @enable: charger on/off 587bc6e0287SLinus Walleij * @vset_uv: requested charger output voltage in microvolt 58883e5aa77SLinus Walleij * @iset_ua: requested charger output current in microampere 589c5b64a99SLinus Walleij * 590c5b64a99SLinus Walleij * The USB charger will be turned on/off with the requested charge voltage and 591c5b64a99SLinus Walleij * current 592c5b64a99SLinus Walleij */ 593c5b64a99SLinus Walleij static int ab8500_chargalg_usb_en(struct ab8500_chargalg *di, int enable, 594bc6e0287SLinus Walleij int vset_uv, int iset_ua) 595c5b64a99SLinus Walleij { 596c5b64a99SLinus Walleij if (!di->usb_chg || !di->usb_chg->ops.enable) 597c5b64a99SLinus Walleij return -ENXIO; 598c5b64a99SLinus Walleij 599c5b64a99SLinus Walleij /* Select maximum of what both the charger and the battery supports */ 600bc6e0287SLinus Walleij if (di->usb_chg->max_out_volt_uv) 601bc6e0287SLinus Walleij vset_uv = min(vset_uv, di->usb_chg->max_out_volt_uv); 60283e5aa77SLinus Walleij if (di->usb_chg->max_out_curr_ua) 60383e5aa77SLinus Walleij iset_ua = min(iset_ua, di->usb_chg->max_out_curr_ua); 604c5b64a99SLinus Walleij 60583e5aa77SLinus Walleij di->chg_info.usb_iset_ua = iset_ua; 606bc6e0287SLinus Walleij di->chg_info.usb_vset_uv = vset_uv; 607c5b64a99SLinus Walleij 608bc6e0287SLinus Walleij return di->usb_chg->ops.enable(di->usb_chg, enable, vset_uv, iset_ua); 609c5b64a99SLinus Walleij } 610c5b64a99SLinus Walleij 611c5b64a99SLinus Walleij /** 612c5b64a99SLinus Walleij * ab8500_chargalg_update_chg_curr() - Update charger current 613c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 61483e5aa77SLinus Walleij * @iset_ua: requested charger output current in microampere 615c5b64a99SLinus Walleij * 616c5b64a99SLinus Walleij * The charger output current will be updated for the charger 617c5b64a99SLinus Walleij * that is currently in use 618c5b64a99SLinus Walleij */ 619c5b64a99SLinus Walleij static int ab8500_chargalg_update_chg_curr(struct ab8500_chargalg *di, 62083e5aa77SLinus Walleij int iset_ua) 621c5b64a99SLinus Walleij { 622c5b64a99SLinus Walleij /* Check if charger exists and update current if charging */ 623c5b64a99SLinus Walleij if (di->ac_chg && di->ac_chg->ops.update_curr && 624c5b64a99SLinus Walleij di->chg_info.charger_type & AC_CHG) { 625c5b64a99SLinus Walleij /* 626c5b64a99SLinus Walleij * Select maximum of what both the charger 627c5b64a99SLinus Walleij * and the battery supports 628c5b64a99SLinus Walleij */ 62983e5aa77SLinus Walleij if (di->ac_chg->max_out_curr_ua) 63083e5aa77SLinus Walleij iset_ua = min(iset_ua, di->ac_chg->max_out_curr_ua); 631c5b64a99SLinus Walleij 63283e5aa77SLinus Walleij di->chg_info.ac_iset_ua = iset_ua; 633c5b64a99SLinus Walleij 63483e5aa77SLinus Walleij return di->ac_chg->ops.update_curr(di->ac_chg, iset_ua); 635c5b64a99SLinus Walleij } else if (di->usb_chg && di->usb_chg->ops.update_curr && 636c5b64a99SLinus Walleij di->chg_info.charger_type & USB_CHG) { 637c5b64a99SLinus Walleij /* 638c5b64a99SLinus Walleij * Select maximum of what both the charger 639c5b64a99SLinus Walleij * and the battery supports 640c5b64a99SLinus Walleij */ 64183e5aa77SLinus Walleij if (di->usb_chg->max_out_curr_ua) 64283e5aa77SLinus Walleij iset_ua = min(iset_ua, di->usb_chg->max_out_curr_ua); 643c5b64a99SLinus Walleij 64483e5aa77SLinus Walleij di->chg_info.usb_iset_ua = iset_ua; 645c5b64a99SLinus Walleij 64683e5aa77SLinus Walleij return di->usb_chg->ops.update_curr(di->usb_chg, iset_ua); 647c5b64a99SLinus Walleij } 648c5b64a99SLinus Walleij 649c5b64a99SLinus Walleij return -ENXIO; 650c5b64a99SLinus Walleij } 651c5b64a99SLinus Walleij 652c5b64a99SLinus Walleij /** 653c5b64a99SLinus Walleij * ab8500_chargalg_stop_charging() - Stop charging 654c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 655c5b64a99SLinus Walleij * 656c5b64a99SLinus Walleij * This function is called from any state where charging should be stopped. 657c5b64a99SLinus Walleij * All charging is disabled and all status parameters and timers are changed 658c5b64a99SLinus Walleij * accordingly 659c5b64a99SLinus Walleij */ 660c5b64a99SLinus Walleij static void ab8500_chargalg_stop_charging(struct ab8500_chargalg *di) 661c5b64a99SLinus Walleij { 662c5b64a99SLinus Walleij ab8500_chargalg_ac_en(di, false, 0, 0); 663c5b64a99SLinus Walleij ab8500_chargalg_usb_en(di, false, 0, 0); 664c5b64a99SLinus Walleij ab8500_chargalg_stop_safety_timer(di); 665c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 666c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING; 667c5b64a99SLinus Walleij di->maintenance_chg = false; 668c5b64a99SLinus Walleij cancel_delayed_work(&di->chargalg_wd_work); 669c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 670c5b64a99SLinus Walleij } 671c5b64a99SLinus Walleij 672c5b64a99SLinus Walleij /** 673c5b64a99SLinus Walleij * ab8500_chargalg_hold_charging() - Pauses charging 674c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 675c5b64a99SLinus Walleij * 676c5b64a99SLinus Walleij * This function is called in the case where maintenance charging has been 677c5b64a99SLinus Walleij * disabled and instead a battery voltage mode is entered to check when the 678c5b64a99SLinus Walleij * battery voltage has reached a certain recharge voltage 679c5b64a99SLinus Walleij */ 680c5b64a99SLinus Walleij static void ab8500_chargalg_hold_charging(struct ab8500_chargalg *di) 681c5b64a99SLinus Walleij { 682c5b64a99SLinus Walleij ab8500_chargalg_ac_en(di, false, 0, 0); 683c5b64a99SLinus Walleij ab8500_chargalg_usb_en(di, false, 0, 0); 684c5b64a99SLinus Walleij ab8500_chargalg_stop_safety_timer(di); 685c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 686c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_CHARGING; 687c5b64a99SLinus Walleij di->maintenance_chg = false; 688c5b64a99SLinus Walleij cancel_delayed_work(&di->chargalg_wd_work); 689c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 690c5b64a99SLinus Walleij } 691c5b64a99SLinus Walleij 692c5b64a99SLinus Walleij /** 693c5b64a99SLinus Walleij * ab8500_chargalg_start_charging() - Start the charger 694c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 695bc6e0287SLinus Walleij * @vset_uv: requested charger output voltage in microvolt 69683e5aa77SLinus Walleij * @iset_ua: requested charger output current in microampere 697c5b64a99SLinus Walleij * 698c5b64a99SLinus Walleij * A charger will be enabled depending on the requested charger type that was 699c5b64a99SLinus Walleij * detected previously. 700c5b64a99SLinus Walleij */ 701c5b64a99SLinus Walleij static void ab8500_chargalg_start_charging(struct ab8500_chargalg *di, 702bc6e0287SLinus Walleij int vset_uv, int iset_ua) 703c5b64a99SLinus Walleij { 704c5b64a99SLinus Walleij switch (di->chg_info.charger_type) { 705c5b64a99SLinus Walleij case AC_CHG: 706c5b64a99SLinus Walleij dev_dbg(di->dev, 707bc6e0287SLinus Walleij "AC parameters: Vset %d, Ich %d\n", vset_uv, iset_ua); 708c5b64a99SLinus Walleij ab8500_chargalg_usb_en(di, false, 0, 0); 709bc6e0287SLinus Walleij ab8500_chargalg_ac_en(di, true, vset_uv, iset_ua); 710c5b64a99SLinus Walleij break; 711c5b64a99SLinus Walleij 712c5b64a99SLinus Walleij case USB_CHG: 713c5b64a99SLinus Walleij dev_dbg(di->dev, 714bc6e0287SLinus Walleij "USB parameters: Vset %d, Ich %d\n", vset_uv, iset_ua); 715c5b64a99SLinus Walleij ab8500_chargalg_ac_en(di, false, 0, 0); 716bc6e0287SLinus Walleij ab8500_chargalg_usb_en(di, true, vset_uv, iset_ua); 717c5b64a99SLinus Walleij break; 718c5b64a99SLinus Walleij 719c5b64a99SLinus Walleij default: 720c5b64a99SLinus Walleij dev_err(di->dev, "Unknown charger to charge from\n"); 721c5b64a99SLinus Walleij break; 722c5b64a99SLinus Walleij } 723c5b64a99SLinus Walleij } 724c5b64a99SLinus Walleij 725c5b64a99SLinus Walleij /** 726c5b64a99SLinus Walleij * ab8500_chargalg_check_temp() - Check battery temperature ranges 727c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 728c5b64a99SLinus Walleij * 729c5b64a99SLinus Walleij * The battery temperature is checked against the predefined limits and the 730c5b64a99SLinus Walleij * charge state is changed accordingly 731c5b64a99SLinus Walleij */ 732c5b64a99SLinus Walleij static void ab8500_chargalg_check_temp(struct ab8500_chargalg *di) 733c5b64a99SLinus Walleij { 734*25fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 7356252c706SLinus Walleij 7366252c706SLinus Walleij if (di->batt_data.temp > (bi->temp_alert_min + di->t_hyst_norm) && 7376252c706SLinus Walleij di->batt_data.temp < (bi->temp_alert_max - di->t_hyst_norm)) { 738c5b64a99SLinus Walleij /* Temp OK! */ 739c5b64a99SLinus Walleij di->events.btemp_underover = false; 740c5b64a99SLinus Walleij di->events.btemp_lowhigh = false; 741c5b64a99SLinus Walleij di->t_hyst_norm = 0; 742c5b64a99SLinus Walleij di->t_hyst_lowhigh = 0; 743c5b64a99SLinus Walleij } else { 7446252c706SLinus Walleij if (((di->batt_data.temp >= bi->temp_alert_max) && 745c5b64a99SLinus Walleij (di->batt_data.temp < 7466252c706SLinus Walleij (bi->temp_max - di->t_hyst_lowhigh))) || 747c5b64a99SLinus Walleij ((di->batt_data.temp > 7486252c706SLinus Walleij (bi->temp_min + di->t_hyst_lowhigh)) && 7496252c706SLinus Walleij (di->batt_data.temp <= bi->temp_alert_min))) { 750c5b64a99SLinus Walleij /* TEMP minor!!!!! */ 751c5b64a99SLinus Walleij di->events.btemp_underover = false; 752c5b64a99SLinus Walleij di->events.btemp_lowhigh = true; 753c5b64a99SLinus Walleij di->t_hyst_norm = di->bm->temp_hysteresis; 754c5b64a99SLinus Walleij di->t_hyst_lowhigh = 0; 7556252c706SLinus Walleij } else if (di->batt_data.temp <= bi->temp_min || 7566252c706SLinus Walleij di->batt_data.temp >= bi->temp_max) { 757c5b64a99SLinus Walleij /* TEMP major!!!!! */ 758c5b64a99SLinus Walleij di->events.btemp_underover = true; 759c5b64a99SLinus Walleij di->events.btemp_lowhigh = false; 760c5b64a99SLinus Walleij di->t_hyst_norm = 0; 761c5b64a99SLinus Walleij di->t_hyst_lowhigh = di->bm->temp_hysteresis; 762c5b64a99SLinus Walleij } else { 763c5b64a99SLinus Walleij /* Within hysteresis */ 764c5b64a99SLinus Walleij dev_dbg(di->dev, "Within hysteresis limit temp: %d " 765c5b64a99SLinus Walleij "hyst_lowhigh %d, hyst normal %d\n", 766c5b64a99SLinus Walleij di->batt_data.temp, di->t_hyst_lowhigh, 767c5b64a99SLinus Walleij di->t_hyst_norm); 768c5b64a99SLinus Walleij } 769c5b64a99SLinus Walleij } 770c5b64a99SLinus Walleij } 771c5b64a99SLinus Walleij 772c5b64a99SLinus Walleij /** 773c5b64a99SLinus Walleij * ab8500_chargalg_check_charger_voltage() - Check charger voltage 774c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 775c5b64a99SLinus Walleij * 776c5b64a99SLinus Walleij * Charger voltage is checked against maximum limit 777c5b64a99SLinus Walleij */ 778c5b64a99SLinus Walleij static void ab8500_chargalg_check_charger_voltage(struct ab8500_chargalg *di) 779c5b64a99SLinus Walleij { 780bc6e0287SLinus Walleij if (di->chg_info.usb_volt_uv > di->bm->chg_params->usb_volt_max_uv) 781c5b64a99SLinus Walleij di->chg_info.usb_chg_ok = false; 782c5b64a99SLinus Walleij else 783c5b64a99SLinus Walleij di->chg_info.usb_chg_ok = true; 784c5b64a99SLinus Walleij 785bc6e0287SLinus Walleij if (di->chg_info.ac_volt_uv > di->bm->chg_params->ac_volt_max_uv) 786c5b64a99SLinus Walleij di->chg_info.ac_chg_ok = false; 787c5b64a99SLinus Walleij else 788c5b64a99SLinus Walleij di->chg_info.ac_chg_ok = true; 789c5b64a99SLinus Walleij 790c5b64a99SLinus Walleij } 791c5b64a99SLinus Walleij 792c5b64a99SLinus Walleij /** 793c5b64a99SLinus Walleij * ab8500_chargalg_end_of_charge() - Check if end-of-charge criteria is fulfilled 794c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 795c5b64a99SLinus Walleij * 796c5b64a99SLinus Walleij * End-of-charge criteria is fulfilled when the battery voltage is above a 797c5b64a99SLinus Walleij * certain limit and the battery current is below a certain limit for a 798c5b64a99SLinus Walleij * predefined number of consecutive seconds. If true, the battery is full 799c5b64a99SLinus Walleij */ 800c5b64a99SLinus Walleij static void ab8500_chargalg_end_of_charge(struct ab8500_chargalg *di) 801c5b64a99SLinus Walleij { 802c5b64a99SLinus Walleij if (di->charge_status == POWER_SUPPLY_STATUS_CHARGING && 803c5b64a99SLinus Walleij di->charge_state == STATE_NORMAL && 8042a5f4183SLinus Walleij !di->maintenance_chg && (di->batt_data.volt_uv >= 805*25fd3303SLinus Walleij di->bm->bi->overvoltage_limit_uv || 806c5b64a99SLinus Walleij di->events.usb_cv_active || di->events.ac_cv_active) && 8079c20899dSLinus Walleij di->batt_data.avg_curr_ua < 808*25fd3303SLinus Walleij di->bm->bi->charge_term_current_ua && 8099c20899dSLinus Walleij di->batt_data.avg_curr_ua > 0) { 810c5b64a99SLinus Walleij if (++di->eoc_cnt >= EOC_COND_CNT) { 811c5b64a99SLinus Walleij di->eoc_cnt = 0; 812c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_FULL; 813c5b64a99SLinus Walleij di->maintenance_chg = true; 814c5b64a99SLinus Walleij dev_dbg(di->dev, "EOC reached!\n"); 815c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 816c5b64a99SLinus Walleij } else { 817c5b64a99SLinus Walleij dev_dbg(di->dev, 818c5b64a99SLinus Walleij " EOC limit reached for the %d" 819c5b64a99SLinus Walleij " time, out of %d before EOC\n", 820c5b64a99SLinus Walleij di->eoc_cnt, 821c5b64a99SLinus Walleij EOC_COND_CNT); 822c5b64a99SLinus Walleij } 823c5b64a99SLinus Walleij } else { 824c5b64a99SLinus Walleij di->eoc_cnt = 0; 825c5b64a99SLinus Walleij } 826c5b64a99SLinus Walleij } 827c5b64a99SLinus Walleij 828c5b64a99SLinus Walleij static void init_maxim_chg_curr(struct ab8500_chargalg *di) 829c5b64a99SLinus Walleij { 830*25fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 83183e5aa77SLinus Walleij 83283e5aa77SLinus Walleij di->ccm.original_iset_ua = bi->constant_charge_current_max_ua; 83383e5aa77SLinus Walleij di->ccm.current_iset_ua = bi->constant_charge_current_max_ua; 83483e5aa77SLinus Walleij di->ccm.test_delta_i_ua = di->bm->maxi->charger_curr_step_ua; 83583e5aa77SLinus Walleij di->ccm.max_current_ua = di->bm->maxi->chg_curr_ua; 836c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 837c5b64a99SLinus Walleij di->ccm.level = 0; 838c5b64a99SLinus Walleij } 839c5b64a99SLinus Walleij 840c5b64a99SLinus Walleij /** 841c5b64a99SLinus Walleij * ab8500_chargalg_chg_curr_maxim - increases the charger current to 842c5b64a99SLinus Walleij * compensate for the system load 843c5b64a99SLinus Walleij * @di pointer to the ab8500_chargalg structure 844c5b64a99SLinus Walleij * 845c5b64a99SLinus Walleij * This maximization function is used to raise the charger current to get the 846c5b64a99SLinus Walleij * battery current as close to the optimal value as possible. The battery 847c5b64a99SLinus Walleij * current during charging is affected by the system load 848c5b64a99SLinus Walleij */ 849c5b64a99SLinus Walleij static enum maxim_ret ab8500_chargalg_chg_curr_maxim(struct ab8500_chargalg *di) 850c5b64a99SLinus Walleij { 85183e5aa77SLinus Walleij int delta_i_ua; 852c5b64a99SLinus Walleij 853c5b64a99SLinus Walleij if (!di->bm->maxi->ena_maxi) 854c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 855c5b64a99SLinus Walleij 85683e5aa77SLinus Walleij delta_i_ua = di->ccm.original_iset_ua - di->batt_data.inst_curr_ua; 857c5b64a99SLinus Walleij 858c5b64a99SLinus Walleij if (di->events.vbus_collapsed) { 859c5b64a99SLinus Walleij dev_dbg(di->dev, "Charger voltage has collapsed %d\n", 860c5b64a99SLinus Walleij di->ccm.wait_cnt); 861c5b64a99SLinus Walleij if (di->ccm.wait_cnt == 0) { 862c5b64a99SLinus Walleij dev_dbg(di->dev, "lowering current\n"); 863c5b64a99SLinus Walleij di->ccm.wait_cnt++; 864c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 86583e5aa77SLinus Walleij di->ccm.max_current_ua = 86683e5aa77SLinus Walleij di->ccm.current_iset_ua - di->ccm.test_delta_i_ua; 86783e5aa77SLinus Walleij di->ccm.current_iset_ua = di->ccm.max_current_ua; 868c5b64a99SLinus Walleij di->ccm.level--; 869c5b64a99SLinus Walleij return MAXIM_RET_CHANGE; 870c5b64a99SLinus Walleij } else { 871c5b64a99SLinus Walleij dev_dbg(di->dev, "waiting\n"); 872c5b64a99SLinus Walleij /* Let's go in here twice before lowering curr again */ 873c5b64a99SLinus Walleij di->ccm.wait_cnt = (di->ccm.wait_cnt + 1) % 3; 874c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 875c5b64a99SLinus Walleij } 876c5b64a99SLinus Walleij } 877c5b64a99SLinus Walleij 878c5b64a99SLinus Walleij di->ccm.wait_cnt = 0; 879c5b64a99SLinus Walleij 88083e5aa77SLinus Walleij if (di->batt_data.inst_curr_ua > di->ccm.original_iset_ua) { 88183e5aa77SLinus Walleij dev_dbg(di->dev, " Maximization Ibat (%duA) too high" 88283e5aa77SLinus Walleij " (limit %duA) (current iset: %duA)!\n", 88383e5aa77SLinus Walleij di->batt_data.inst_curr_ua, di->ccm.original_iset_ua, 88483e5aa77SLinus Walleij di->ccm.current_iset_ua); 885c5b64a99SLinus Walleij 88683e5aa77SLinus Walleij if (di->ccm.current_iset_ua == di->ccm.original_iset_ua) 887c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 888c5b64a99SLinus Walleij 889c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 89083e5aa77SLinus Walleij di->ccm.current_iset_ua = di->ccm.original_iset_ua; 891c5b64a99SLinus Walleij di->ccm.level = 0; 892c5b64a99SLinus Walleij 893c5b64a99SLinus Walleij return MAXIM_RET_IBAT_TOO_HIGH; 894c5b64a99SLinus Walleij } 895c5b64a99SLinus Walleij 89683e5aa77SLinus Walleij if (delta_i_ua > di->ccm.test_delta_i_ua && 89783e5aa77SLinus Walleij (di->ccm.current_iset_ua + di->ccm.test_delta_i_ua) < 89883e5aa77SLinus Walleij di->ccm.max_current_ua) { 899c5b64a99SLinus Walleij if (di->ccm.condition_cnt-- == 0) { 900c5b64a99SLinus Walleij /* Increse the iset with cco.test_delta_i */ 901c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 90283e5aa77SLinus Walleij di->ccm.current_iset_ua += di->ccm.test_delta_i_ua; 903c5b64a99SLinus Walleij di->ccm.level++; 904c5b64a99SLinus Walleij dev_dbg(di->dev, " Maximization needed, increase" 90583e5aa77SLinus Walleij " with %d uA to %duA (Optimal ibat: %d uA)" 906c5b64a99SLinus Walleij " Level %d\n", 90783e5aa77SLinus Walleij di->ccm.test_delta_i_ua, 90883e5aa77SLinus Walleij di->ccm.current_iset_ua, 90983e5aa77SLinus Walleij di->ccm.original_iset_ua, 910c5b64a99SLinus Walleij di->ccm.level); 911c5b64a99SLinus Walleij return MAXIM_RET_CHANGE; 912c5b64a99SLinus Walleij } else { 913c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 914c5b64a99SLinus Walleij } 915c5b64a99SLinus Walleij } else { 916c5b64a99SLinus Walleij di->ccm.condition_cnt = di->bm->maxi->wait_cycles; 917c5b64a99SLinus Walleij return MAXIM_RET_NOACTION; 918c5b64a99SLinus Walleij } 919c5b64a99SLinus Walleij } 920c5b64a99SLinus Walleij 921c5b64a99SLinus Walleij static void handle_maxim_chg_curr(struct ab8500_chargalg *di) 922c5b64a99SLinus Walleij { 923*25fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 924c5b64a99SLinus Walleij enum maxim_ret ret; 925c5b64a99SLinus Walleij int result; 926c5b64a99SLinus Walleij 927c5b64a99SLinus Walleij ret = ab8500_chargalg_chg_curr_maxim(di); 928c5b64a99SLinus Walleij switch (ret) { 929c5b64a99SLinus Walleij case MAXIM_RET_CHANGE: 930c5b64a99SLinus Walleij result = ab8500_chargalg_update_chg_curr(di, 93183e5aa77SLinus Walleij di->ccm.current_iset_ua); 932c5b64a99SLinus Walleij if (result) 933c5b64a99SLinus Walleij dev_err(di->dev, "failed to set chg curr\n"); 934c5b64a99SLinus Walleij break; 935c5b64a99SLinus Walleij case MAXIM_RET_IBAT_TOO_HIGH: 936c5b64a99SLinus Walleij result = ab8500_chargalg_update_chg_curr(di, 93783e5aa77SLinus Walleij bi->constant_charge_current_max_ua); 938c5b64a99SLinus Walleij if (result) 939c5b64a99SLinus Walleij dev_err(di->dev, "failed to set chg curr\n"); 940c5b64a99SLinus Walleij break; 941c5b64a99SLinus Walleij 942c5b64a99SLinus Walleij case MAXIM_RET_NOACTION: 943c5b64a99SLinus Walleij default: 944c5b64a99SLinus Walleij /* Do nothing..*/ 945c5b64a99SLinus Walleij break; 946c5b64a99SLinus Walleij } 947c5b64a99SLinus Walleij } 948c5b64a99SLinus Walleij 949c5b64a99SLinus Walleij static int ab8500_chargalg_get_ext_psy_data(struct device *dev, void *data) 950c5b64a99SLinus Walleij { 951c5b64a99SLinus Walleij struct power_supply *psy; 952c5b64a99SLinus Walleij struct power_supply *ext = dev_get_drvdata(dev); 953c5b64a99SLinus Walleij const char **supplicants = (const char **)ext->supplied_to; 954c5b64a99SLinus Walleij struct ab8500_chargalg *di; 955c5b64a99SLinus Walleij union power_supply_propval ret; 956c5b64a99SLinus Walleij int j; 957c5b64a99SLinus Walleij bool capacity_updated = false; 958c5b64a99SLinus Walleij 959c5b64a99SLinus Walleij psy = (struct power_supply *)data; 960c5b64a99SLinus Walleij di = power_supply_get_drvdata(psy); 961c5b64a99SLinus Walleij /* For all psy where the driver name appears in any supplied_to */ 962c5b64a99SLinus Walleij j = match_string(supplicants, ext->num_supplicants, psy->desc->name); 963c5b64a99SLinus Walleij if (j < 0) 964c5b64a99SLinus Walleij return 0; 965c5b64a99SLinus Walleij 966c5b64a99SLinus Walleij /* 967c5b64a99SLinus Walleij * If external is not registering 'POWER_SUPPLY_PROP_CAPACITY' to its 968c5b64a99SLinus Walleij * property because of handling that sysfs entry on its own, this is 969c5b64a99SLinus Walleij * the place to get the battery capacity. 970c5b64a99SLinus Walleij */ 971c5b64a99SLinus Walleij if (!power_supply_get_property(ext, POWER_SUPPLY_PROP_CAPACITY, &ret)) { 972c5b64a99SLinus Walleij di->batt_data.percent = ret.intval; 973c5b64a99SLinus Walleij capacity_updated = true; 974c5b64a99SLinus Walleij } 975c5b64a99SLinus Walleij 976c5b64a99SLinus Walleij /* Go through all properties for the psy */ 977c5b64a99SLinus Walleij for (j = 0; j < ext->desc->num_properties; j++) { 978c5b64a99SLinus Walleij enum power_supply_property prop; 979c5b64a99SLinus Walleij prop = ext->desc->properties[j]; 980c5b64a99SLinus Walleij 981c5b64a99SLinus Walleij /* 982c5b64a99SLinus Walleij * Initialize chargers if not already done. 983c5b64a99SLinus Walleij * The ab8500_charger*/ 984c5b64a99SLinus Walleij if (!di->ac_chg && 985c5b64a99SLinus Walleij ext->desc->type == POWER_SUPPLY_TYPE_MAINS) 986c5b64a99SLinus Walleij di->ac_chg = psy_to_ux500_charger(ext); 987c5b64a99SLinus Walleij else if (!di->usb_chg && 988c5b64a99SLinus Walleij ext->desc->type == POWER_SUPPLY_TYPE_USB) 989c5b64a99SLinus Walleij di->usb_chg = psy_to_ux500_charger(ext); 990c5b64a99SLinus Walleij 991c5b64a99SLinus Walleij if (power_supply_get_property(ext, prop, &ret)) 992c5b64a99SLinus Walleij continue; 993c5b64a99SLinus Walleij switch (prop) { 994c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_PRESENT: 995c5b64a99SLinus Walleij switch (ext->desc->type) { 996c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 997c5b64a99SLinus Walleij /* Battery present */ 998c5b64a99SLinus Walleij if (ret.intval) 999c5b64a99SLinus Walleij di->events.batt_rem = false; 1000c5b64a99SLinus Walleij /* Battery removed */ 1001c5b64a99SLinus Walleij else 1002c5b64a99SLinus Walleij di->events.batt_rem = true; 1003c5b64a99SLinus Walleij break; 1004c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 1005c5b64a99SLinus Walleij /* AC disconnected */ 1006c5b64a99SLinus Walleij if (!ret.intval && 1007c5b64a99SLinus Walleij (di->chg_info.conn_chg & AC_CHG)) { 1008c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = 1009c5b64a99SLinus Walleij di->chg_info.conn_chg; 1010c5b64a99SLinus Walleij di->chg_info.conn_chg &= ~AC_CHG; 1011c5b64a99SLinus Walleij } 1012c5b64a99SLinus Walleij /* AC connected */ 1013c5b64a99SLinus Walleij else if (ret.intval && 1014c5b64a99SLinus Walleij !(di->chg_info.conn_chg & AC_CHG)) { 1015c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = 1016c5b64a99SLinus Walleij di->chg_info.conn_chg; 1017c5b64a99SLinus Walleij di->chg_info.conn_chg |= AC_CHG; 1018c5b64a99SLinus Walleij } 1019c5b64a99SLinus Walleij break; 1020c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1021c5b64a99SLinus Walleij /* USB disconnected */ 1022c5b64a99SLinus Walleij if (!ret.intval && 1023c5b64a99SLinus Walleij (di->chg_info.conn_chg & USB_CHG)) { 1024c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = 1025c5b64a99SLinus Walleij di->chg_info.conn_chg; 1026c5b64a99SLinus Walleij di->chg_info.conn_chg &= ~USB_CHG; 1027c5b64a99SLinus Walleij } 1028c5b64a99SLinus Walleij /* USB connected */ 1029c5b64a99SLinus Walleij else if (ret.intval && 1030c5b64a99SLinus Walleij !(di->chg_info.conn_chg & USB_CHG)) { 1031c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = 1032c5b64a99SLinus Walleij di->chg_info.conn_chg; 1033c5b64a99SLinus Walleij di->chg_info.conn_chg |= USB_CHG; 1034c5b64a99SLinus Walleij } 1035c5b64a99SLinus Walleij break; 1036c5b64a99SLinus Walleij default: 1037c5b64a99SLinus Walleij break; 1038c5b64a99SLinus Walleij } 1039c5b64a99SLinus Walleij break; 1040c5b64a99SLinus Walleij 1041c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_ONLINE: 1042c5b64a99SLinus Walleij switch (ext->desc->type) { 1043c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 1044c5b64a99SLinus Walleij break; 1045c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 1046c5b64a99SLinus Walleij /* AC offline */ 1047c5b64a99SLinus Walleij if (!ret.intval && 1048c5b64a99SLinus Walleij (di->chg_info.online_chg & AC_CHG)) { 1049c5b64a99SLinus Walleij di->chg_info.prev_online_chg = 1050c5b64a99SLinus Walleij di->chg_info.online_chg; 1051c5b64a99SLinus Walleij di->chg_info.online_chg &= ~AC_CHG; 1052c5b64a99SLinus Walleij } 1053c5b64a99SLinus Walleij /* AC online */ 1054c5b64a99SLinus Walleij else if (ret.intval && 1055c5b64a99SLinus Walleij !(di->chg_info.online_chg & AC_CHG)) { 1056c5b64a99SLinus Walleij di->chg_info.prev_online_chg = 1057c5b64a99SLinus Walleij di->chg_info.online_chg; 1058c5b64a99SLinus Walleij di->chg_info.online_chg |= AC_CHG; 1059c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1060c5b64a99SLinus Walleij &di->chargalg_wd_work, 0); 1061c5b64a99SLinus Walleij } 1062c5b64a99SLinus Walleij break; 1063c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1064c5b64a99SLinus Walleij /* USB offline */ 1065c5b64a99SLinus Walleij if (!ret.intval && 1066c5b64a99SLinus Walleij (di->chg_info.online_chg & USB_CHG)) { 1067c5b64a99SLinus Walleij di->chg_info.prev_online_chg = 1068c5b64a99SLinus Walleij di->chg_info.online_chg; 1069c5b64a99SLinus Walleij di->chg_info.online_chg &= ~USB_CHG; 1070c5b64a99SLinus Walleij } 1071c5b64a99SLinus Walleij /* USB online */ 1072c5b64a99SLinus Walleij else if (ret.intval && 1073c5b64a99SLinus Walleij !(di->chg_info.online_chg & USB_CHG)) { 1074c5b64a99SLinus Walleij di->chg_info.prev_online_chg = 1075c5b64a99SLinus Walleij di->chg_info.online_chg; 1076c5b64a99SLinus Walleij di->chg_info.online_chg |= USB_CHG; 1077c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1078c5b64a99SLinus Walleij &di->chargalg_wd_work, 0); 1079c5b64a99SLinus Walleij } 1080c5b64a99SLinus Walleij break; 1081c5b64a99SLinus Walleij default: 1082c5b64a99SLinus Walleij break; 1083c5b64a99SLinus Walleij } 1084c5b64a99SLinus Walleij break; 1085c5b64a99SLinus Walleij 1086c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_HEALTH: 1087c5b64a99SLinus Walleij switch (ext->desc->type) { 1088c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 1089c5b64a99SLinus Walleij break; 1090c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 1091c5b64a99SLinus Walleij switch (ret.intval) { 1092c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE: 1093c5b64a99SLinus Walleij di->events.mainextchnotok = true; 1094c5b64a99SLinus Walleij di->events.main_thermal_prot = false; 1095c5b64a99SLinus Walleij di->events.main_ovv = false; 1096c5b64a99SLinus Walleij di->events.ac_wd_expired = false; 1097c5b64a99SLinus Walleij break; 1098c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_DEAD: 1099c5b64a99SLinus Walleij di->events.ac_wd_expired = true; 1100c5b64a99SLinus Walleij di->events.mainextchnotok = false; 1101c5b64a99SLinus Walleij di->events.main_ovv = false; 1102c5b64a99SLinus Walleij di->events.main_thermal_prot = false; 1103c5b64a99SLinus Walleij break; 1104c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_COLD: 1105c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_OVERHEAT: 1106c5b64a99SLinus Walleij di->events.main_thermal_prot = true; 1107c5b64a99SLinus Walleij di->events.mainextchnotok = false; 1108c5b64a99SLinus Walleij di->events.main_ovv = false; 1109c5b64a99SLinus Walleij di->events.ac_wd_expired = false; 1110c5b64a99SLinus Walleij break; 1111c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_OVERVOLTAGE: 1112c5b64a99SLinus Walleij di->events.main_ovv = true; 1113c5b64a99SLinus Walleij di->events.mainextchnotok = false; 1114c5b64a99SLinus Walleij di->events.main_thermal_prot = false; 1115c5b64a99SLinus Walleij di->events.ac_wd_expired = false; 1116c5b64a99SLinus Walleij break; 1117c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_GOOD: 1118c5b64a99SLinus Walleij di->events.main_thermal_prot = false; 1119c5b64a99SLinus Walleij di->events.mainextchnotok = false; 1120c5b64a99SLinus Walleij di->events.main_ovv = false; 1121c5b64a99SLinus Walleij di->events.ac_wd_expired = false; 1122c5b64a99SLinus Walleij break; 1123c5b64a99SLinus Walleij default: 1124c5b64a99SLinus Walleij break; 1125c5b64a99SLinus Walleij } 1126c5b64a99SLinus Walleij break; 1127c5b64a99SLinus Walleij 1128c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1129c5b64a99SLinus Walleij switch (ret.intval) { 1130c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE: 1131c5b64a99SLinus Walleij di->events.usbchargernotok = true; 1132c5b64a99SLinus Walleij di->events.usb_thermal_prot = false; 1133c5b64a99SLinus Walleij di->events.vbus_ovv = false; 1134c5b64a99SLinus Walleij di->events.usb_wd_expired = false; 1135c5b64a99SLinus Walleij break; 1136c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_DEAD: 1137c5b64a99SLinus Walleij di->events.usb_wd_expired = true; 1138c5b64a99SLinus Walleij di->events.usbchargernotok = false; 1139c5b64a99SLinus Walleij di->events.usb_thermal_prot = false; 1140c5b64a99SLinus Walleij di->events.vbus_ovv = false; 1141c5b64a99SLinus Walleij break; 1142c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_COLD: 1143c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_OVERHEAT: 1144c5b64a99SLinus Walleij di->events.usb_thermal_prot = true; 1145c5b64a99SLinus Walleij di->events.usbchargernotok = false; 1146c5b64a99SLinus Walleij di->events.vbus_ovv = false; 1147c5b64a99SLinus Walleij di->events.usb_wd_expired = false; 1148c5b64a99SLinus Walleij break; 1149c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_OVERVOLTAGE: 1150c5b64a99SLinus Walleij di->events.vbus_ovv = true; 1151c5b64a99SLinus Walleij di->events.usbchargernotok = false; 1152c5b64a99SLinus Walleij di->events.usb_thermal_prot = false; 1153c5b64a99SLinus Walleij di->events.usb_wd_expired = false; 1154c5b64a99SLinus Walleij break; 1155c5b64a99SLinus Walleij case POWER_SUPPLY_HEALTH_GOOD: 1156c5b64a99SLinus Walleij di->events.usbchargernotok = false; 1157c5b64a99SLinus Walleij di->events.usb_thermal_prot = false; 1158c5b64a99SLinus Walleij di->events.vbus_ovv = false; 1159c5b64a99SLinus Walleij di->events.usb_wd_expired = false; 1160c5b64a99SLinus Walleij break; 1161c5b64a99SLinus Walleij default: 1162c5b64a99SLinus Walleij break; 1163c5b64a99SLinus Walleij } 11644520dcbeSLinus Torvalds break; 1165c5b64a99SLinus Walleij default: 1166c5b64a99SLinus Walleij break; 1167c5b64a99SLinus Walleij } 1168c5b64a99SLinus Walleij break; 1169c5b64a99SLinus Walleij 1170c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_VOLTAGE_NOW: 1171c5b64a99SLinus Walleij switch (ext->desc->type) { 1172c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 11732a5f4183SLinus Walleij di->batt_data.volt_uv = ret.intval; 1174c5b64a99SLinus Walleij break; 1175c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 1176bc6e0287SLinus Walleij di->chg_info.ac_volt_uv = ret.intval; 1177c5b64a99SLinus Walleij break; 1178c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1179bc6e0287SLinus Walleij di->chg_info.usb_volt_uv = ret.intval; 1180c5b64a99SLinus Walleij break; 1181c5b64a99SLinus Walleij default: 1182c5b64a99SLinus Walleij break; 1183c5b64a99SLinus Walleij } 1184c5b64a99SLinus Walleij break; 1185c5b64a99SLinus Walleij 1186c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_VOLTAGE_AVG: 1187c5b64a99SLinus Walleij switch (ext->desc->type) { 1188c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 1189c5b64a99SLinus Walleij /* AVG is used to indicate when we are 1190c5b64a99SLinus Walleij * in CV mode */ 1191c5b64a99SLinus Walleij if (ret.intval) 1192c5b64a99SLinus Walleij di->events.ac_cv_active = true; 1193c5b64a99SLinus Walleij else 1194c5b64a99SLinus Walleij di->events.ac_cv_active = false; 1195c5b64a99SLinus Walleij 1196c5b64a99SLinus Walleij break; 1197c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1198c5b64a99SLinus Walleij /* AVG is used to indicate when we are 1199c5b64a99SLinus Walleij * in CV mode */ 1200c5b64a99SLinus Walleij if (ret.intval) 1201c5b64a99SLinus Walleij di->events.usb_cv_active = true; 1202c5b64a99SLinus Walleij else 1203c5b64a99SLinus Walleij di->events.usb_cv_active = false; 1204c5b64a99SLinus Walleij 1205c5b64a99SLinus Walleij break; 1206c5b64a99SLinus Walleij default: 1207c5b64a99SLinus Walleij break; 1208c5b64a99SLinus Walleij } 1209c5b64a99SLinus Walleij break; 1210c5b64a99SLinus Walleij 1211c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_TECHNOLOGY: 1212c5b64a99SLinus Walleij switch (ext->desc->type) { 1213c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 1214c5b64a99SLinus Walleij if (ret.intval) 1215c5b64a99SLinus Walleij di->events.batt_unknown = false; 1216c5b64a99SLinus Walleij else 1217c5b64a99SLinus Walleij di->events.batt_unknown = true; 1218c5b64a99SLinus Walleij 1219c5b64a99SLinus Walleij break; 1220c5b64a99SLinus Walleij default: 1221c5b64a99SLinus Walleij break; 1222c5b64a99SLinus Walleij } 1223c5b64a99SLinus Walleij break; 1224c5b64a99SLinus Walleij 1225c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_TEMP: 1226c5b64a99SLinus Walleij di->batt_data.temp = ret.intval / 10; 1227c5b64a99SLinus Walleij break; 1228c5b64a99SLinus Walleij 1229c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_CURRENT_NOW: 1230c5b64a99SLinus Walleij switch (ext->desc->type) { 1231c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_MAINS: 123283e5aa77SLinus Walleij di->chg_info.ac_curr_ua = ret.intval; 1233c5b64a99SLinus Walleij break; 1234c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 123583e5aa77SLinus Walleij di->chg_info.usb_curr_ua = ret.intval; 1236c5b64a99SLinus Walleij break; 1237c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 123883e5aa77SLinus Walleij di->batt_data.inst_curr_ua = ret.intval; 1239c5b64a99SLinus Walleij break; 1240c5b64a99SLinus Walleij default: 1241c5b64a99SLinus Walleij break; 1242c5b64a99SLinus Walleij } 1243c5b64a99SLinus Walleij break; 1244c5b64a99SLinus Walleij 1245c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_CURRENT_AVG: 1246c5b64a99SLinus Walleij switch (ext->desc->type) { 1247c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_BATTERY: 12489c20899dSLinus Walleij di->batt_data.avg_curr_ua = ret.intval; 1249c5b64a99SLinus Walleij break; 1250c5b64a99SLinus Walleij case POWER_SUPPLY_TYPE_USB: 1251c5b64a99SLinus Walleij if (ret.intval) 1252c5b64a99SLinus Walleij di->events.vbus_collapsed = true; 1253c5b64a99SLinus Walleij else 1254c5b64a99SLinus Walleij di->events.vbus_collapsed = false; 1255c5b64a99SLinus Walleij break; 1256c5b64a99SLinus Walleij default: 1257c5b64a99SLinus Walleij break; 1258c5b64a99SLinus Walleij } 1259c5b64a99SLinus Walleij break; 1260c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_CAPACITY: 1261c5b64a99SLinus Walleij if (!capacity_updated) 1262c5b64a99SLinus Walleij di->batt_data.percent = ret.intval; 1263c5b64a99SLinus Walleij break; 1264c5b64a99SLinus Walleij default: 1265c5b64a99SLinus Walleij break; 1266c5b64a99SLinus Walleij } 1267c5b64a99SLinus Walleij } 1268c5b64a99SLinus Walleij return 0; 1269c5b64a99SLinus Walleij } 1270c5b64a99SLinus Walleij 1271c5b64a99SLinus Walleij /** 1272c5b64a99SLinus Walleij * ab8500_chargalg_external_power_changed() - callback for power supply changes 1273c5b64a99SLinus Walleij * @psy: pointer to the structure power_supply 1274c5b64a99SLinus Walleij * 1275c5b64a99SLinus Walleij * This function is the entry point of the pointer external_power_changed 1276c5b64a99SLinus Walleij * of the structure power_supply. 1277c5b64a99SLinus Walleij * This function gets executed when there is a change in any external power 1278c5b64a99SLinus Walleij * supply that this driver needs to be notified of. 1279c5b64a99SLinus Walleij */ 1280c5b64a99SLinus Walleij static void ab8500_chargalg_external_power_changed(struct power_supply *psy) 1281c5b64a99SLinus Walleij { 1282c5b64a99SLinus Walleij struct ab8500_chargalg *di = power_supply_get_drvdata(psy); 1283c5b64a99SLinus Walleij 1284c5b64a99SLinus Walleij /* 1285c5b64a99SLinus Walleij * Trigger execution of the algorithm instantly and read 1286c5b64a99SLinus Walleij * all power_supply properties there instead 1287c5b64a99SLinus Walleij */ 1288661d10eeSLinus Walleij if (di->chargalg_wq) 1289c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 1290c5b64a99SLinus Walleij } 1291c5b64a99SLinus Walleij 1292c5b64a99SLinus Walleij /** 1293c5b64a99SLinus Walleij * ab8500_chargalg_algorithm() - Main function for the algorithm 1294c5b64a99SLinus Walleij * @di: pointer to the ab8500_chargalg structure 1295c5b64a99SLinus Walleij * 1296c5b64a99SLinus Walleij * This is the main control function for the charging algorithm. 1297c5b64a99SLinus Walleij * It is called periodically or when something happens that will 1298c5b64a99SLinus Walleij * trigger a state change 1299c5b64a99SLinus Walleij */ 1300c5b64a99SLinus Walleij static void ab8500_chargalg_algorithm(struct ab8500_chargalg *di) 1301c5b64a99SLinus Walleij { 1302*25fd3303SLinus Walleij struct power_supply_battery_info *bi = di->bm->bi; 1303c5b64a99SLinus Walleij int charger_status; 1304c5b64a99SLinus Walleij int ret; 130583e5aa77SLinus Walleij int curr_step_lvl_ua; 1306c5b64a99SLinus Walleij 1307c5b64a99SLinus Walleij /* Collect data from all power_supply class devices */ 1308c5b64a99SLinus Walleij class_for_each_device(power_supply_class, NULL, 1309c5b64a99SLinus Walleij di->chargalg_psy, ab8500_chargalg_get_ext_psy_data); 1310c5b64a99SLinus Walleij 1311c5b64a99SLinus Walleij ab8500_chargalg_end_of_charge(di); 1312c5b64a99SLinus Walleij ab8500_chargalg_check_temp(di); 1313c5b64a99SLinus Walleij ab8500_chargalg_check_charger_voltage(di); 1314c5b64a99SLinus Walleij 1315c5b64a99SLinus Walleij charger_status = ab8500_chargalg_check_charger_connection(di); 1316c5b64a99SLinus Walleij ab8500_chargalg_check_current_step_status(di); 1317c5b64a99SLinus Walleij 1318c5b64a99SLinus Walleij if (is_ab8500(di->parent)) { 1319c5b64a99SLinus Walleij ret = ab8500_chargalg_check_charger_enable(di); 1320c5b64a99SLinus Walleij if (ret < 0) 1321c5b64a99SLinus Walleij dev_err(di->dev, "Checking charger is enabled error" 1322c5b64a99SLinus Walleij ": Returned Value %d\n", ret); 1323c5b64a99SLinus Walleij } 1324c5b64a99SLinus Walleij 1325c5b64a99SLinus Walleij /* 1326c5b64a99SLinus Walleij * First check if we have a charger connected. 1327c5b64a99SLinus Walleij * Also we don't allow charging of unknown batteries if configured 1328c5b64a99SLinus Walleij * this way 1329c5b64a99SLinus Walleij */ 1330c5b64a99SLinus Walleij if (!charger_status || 1331c5b64a99SLinus Walleij (di->events.batt_unknown && !di->bm->chg_unknown_bat)) { 1332c5b64a99SLinus Walleij if (di->charge_state != STATE_HANDHELD) { 1333c5b64a99SLinus Walleij di->events.safety_timer_expired = false; 1334c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_HANDHELD_INIT); 1335c5b64a99SLinus Walleij } 1336c5b64a99SLinus Walleij } 1337c5b64a99SLinus Walleij 1338c5b64a99SLinus Walleij /* If suspended, we should not continue checking the flags */ 1339c5b64a99SLinus Walleij else if (di->charge_state == STATE_SUSPENDED_INIT || 1340c5b64a99SLinus Walleij di->charge_state == STATE_SUSPENDED) { 1341c5b64a99SLinus Walleij /* We don't do anything here, just don,t continue */ 1342c5b64a99SLinus Walleij } 1343c5b64a99SLinus Walleij 1344c5b64a99SLinus Walleij /* Safety timer expiration */ 1345c5b64a99SLinus Walleij else if (di->events.safety_timer_expired) { 1346c5b64a99SLinus Walleij if (di->charge_state != STATE_SAFETY_TIMER_EXPIRED) 1347c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1348c5b64a99SLinus Walleij STATE_SAFETY_TIMER_EXPIRED_INIT); 1349c5b64a99SLinus Walleij } 1350c5b64a99SLinus Walleij /* 1351c5b64a99SLinus Walleij * Check if any interrupts has occured 1352c5b64a99SLinus Walleij * that will prevent us from charging 1353c5b64a99SLinus Walleij */ 1354c5b64a99SLinus Walleij 1355c5b64a99SLinus Walleij /* Battery removed */ 1356c5b64a99SLinus Walleij else if (di->events.batt_rem) { 1357c5b64a99SLinus Walleij if (di->charge_state != STATE_BATT_REMOVED) 1358c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_BATT_REMOVED_INIT); 1359c5b64a99SLinus Walleij } 1360c5b64a99SLinus Walleij /* Main or USB charger not ok. */ 1361c5b64a99SLinus Walleij else if (di->events.mainextchnotok || di->events.usbchargernotok) { 1362c5b64a99SLinus Walleij /* 1363c5b64a99SLinus Walleij * If vbus_collapsed is set, we have to lower the charger 1364c5b64a99SLinus Walleij * current, which is done in the normal state below 1365c5b64a99SLinus Walleij */ 1366c5b64a99SLinus Walleij if (di->charge_state != STATE_CHG_NOT_OK && 1367c5b64a99SLinus Walleij !di->events.vbus_collapsed) 1368c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_CHG_NOT_OK_INIT); 1369c5b64a99SLinus Walleij } 1370c5b64a99SLinus Walleij /* VBUS, Main or VBAT OVV. */ 1371c5b64a99SLinus Walleij else if (di->events.vbus_ovv || 1372c5b64a99SLinus Walleij di->events.main_ovv || 1373c5b64a99SLinus Walleij di->events.batt_ovv || 1374c5b64a99SLinus Walleij !di->chg_info.usb_chg_ok || 1375c5b64a99SLinus Walleij !di->chg_info.ac_chg_ok) { 1376c5b64a99SLinus Walleij if (di->charge_state != STATE_OVV_PROTECT) 1377c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_OVV_PROTECT_INIT); 1378c5b64a99SLinus Walleij } 1379c5b64a99SLinus Walleij /* USB Thermal, stop charging */ 1380c5b64a99SLinus Walleij else if (di->events.main_thermal_prot || 1381c5b64a99SLinus Walleij di->events.usb_thermal_prot) { 1382c5b64a99SLinus Walleij if (di->charge_state != STATE_HW_TEMP_PROTECT) 1383c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1384c5b64a99SLinus Walleij STATE_HW_TEMP_PROTECT_INIT); 1385c5b64a99SLinus Walleij } 1386c5b64a99SLinus Walleij /* Battery temp over/under */ 1387c5b64a99SLinus Walleij else if (di->events.btemp_underover) { 1388c5b64a99SLinus Walleij if (di->charge_state != STATE_TEMP_UNDEROVER) 1389c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1390c5b64a99SLinus Walleij STATE_TEMP_UNDEROVER_INIT); 1391c5b64a99SLinus Walleij } 1392c5b64a99SLinus Walleij /* Watchdog expired */ 1393c5b64a99SLinus Walleij else if (di->events.ac_wd_expired || 1394c5b64a99SLinus Walleij di->events.usb_wd_expired) { 1395c5b64a99SLinus Walleij if (di->charge_state != STATE_WD_EXPIRED) 1396c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_WD_EXPIRED_INIT); 1397c5b64a99SLinus Walleij } 1398c5b64a99SLinus Walleij /* Battery temp high/low */ 1399c5b64a99SLinus Walleij else if (di->events.btemp_lowhigh) { 1400c5b64a99SLinus Walleij if (di->charge_state != STATE_TEMP_LOWHIGH) 1401c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_TEMP_LOWHIGH_INIT); 1402c5b64a99SLinus Walleij } 1403c5b64a99SLinus Walleij 1404c5b64a99SLinus Walleij dev_dbg(di->dev, 1405c5b64a99SLinus Walleij "[CHARGALG] Vb %d Ib_avg %d Ib_inst %d Tb %d Cap %d Maint %d " 1406c5b64a99SLinus Walleij "State %s Active_chg %d Chg_status %d AC %d USB %d " 1407c5b64a99SLinus Walleij "AC_online %d USB_online %d AC_CV %d USB_CV %d AC_I %d " 1408c5b64a99SLinus Walleij "USB_I %d AC_Vset %d AC_Iset %d USB_Vset %d USB_Iset %d\n", 14092a5f4183SLinus Walleij di->batt_data.volt_uv, 14109c20899dSLinus Walleij di->batt_data.avg_curr_ua, 141183e5aa77SLinus Walleij di->batt_data.inst_curr_ua, 1412c5b64a99SLinus Walleij di->batt_data.temp, 1413c5b64a99SLinus Walleij di->batt_data.percent, 1414c5b64a99SLinus Walleij di->maintenance_chg, 1415c5b64a99SLinus Walleij states[di->charge_state], 1416c5b64a99SLinus Walleij di->chg_info.charger_type, 1417c5b64a99SLinus Walleij di->charge_status, 1418c5b64a99SLinus Walleij di->chg_info.conn_chg & AC_CHG, 1419c5b64a99SLinus Walleij di->chg_info.conn_chg & USB_CHG, 1420c5b64a99SLinus Walleij di->chg_info.online_chg & AC_CHG, 1421c5b64a99SLinus Walleij di->chg_info.online_chg & USB_CHG, 1422c5b64a99SLinus Walleij di->events.ac_cv_active, 1423c5b64a99SLinus Walleij di->events.usb_cv_active, 142483e5aa77SLinus Walleij di->chg_info.ac_curr_ua, 142583e5aa77SLinus Walleij di->chg_info.usb_curr_ua, 1426bc6e0287SLinus Walleij di->chg_info.ac_vset_uv, 142783e5aa77SLinus Walleij di->chg_info.ac_iset_ua, 1428bc6e0287SLinus Walleij di->chg_info.usb_vset_uv, 142983e5aa77SLinus Walleij di->chg_info.usb_iset_ua); 1430c5b64a99SLinus Walleij 1431c5b64a99SLinus Walleij switch (di->charge_state) { 1432c5b64a99SLinus Walleij case STATE_HANDHELD_INIT: 1433c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1434c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING; 1435c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_HANDHELD); 1436c5b64a99SLinus Walleij fallthrough; 1437c5b64a99SLinus Walleij 1438c5b64a99SLinus Walleij case STATE_HANDHELD: 1439c5b64a99SLinus Walleij break; 1440c5b64a99SLinus Walleij 1441c5b64a99SLinus Walleij case STATE_SUSPENDED_INIT: 1442c5b64a99SLinus Walleij if (di->susp_status.ac_suspended) 1443c5b64a99SLinus Walleij ab8500_chargalg_ac_en(di, false, 0, 0); 1444c5b64a99SLinus Walleij if (di->susp_status.usb_suspended) 1445c5b64a99SLinus Walleij ab8500_chargalg_usb_en(di, false, 0, 0); 1446c5b64a99SLinus Walleij ab8500_chargalg_stop_safety_timer(di); 1447c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1448c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING; 1449c5b64a99SLinus Walleij di->maintenance_chg = false; 1450c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_SUSPENDED); 1451c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1452c5b64a99SLinus Walleij fallthrough; 1453c5b64a99SLinus Walleij 1454c5b64a99SLinus Walleij case STATE_SUSPENDED: 1455c5b64a99SLinus Walleij /* CHARGING is suspended */ 1456c5b64a99SLinus Walleij break; 1457c5b64a99SLinus Walleij 1458c5b64a99SLinus Walleij case STATE_BATT_REMOVED_INIT: 1459c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1460c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_BATT_REMOVED); 1461c5b64a99SLinus Walleij fallthrough; 1462c5b64a99SLinus Walleij 1463c5b64a99SLinus Walleij case STATE_BATT_REMOVED: 1464c5b64a99SLinus Walleij if (!di->events.batt_rem) 1465c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1466c5b64a99SLinus Walleij break; 1467c5b64a99SLinus Walleij 1468c5b64a99SLinus Walleij case STATE_HW_TEMP_PROTECT_INIT: 1469c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1470c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_HW_TEMP_PROTECT); 1471c5b64a99SLinus Walleij fallthrough; 1472c5b64a99SLinus Walleij 1473c5b64a99SLinus Walleij case STATE_HW_TEMP_PROTECT: 1474c5b64a99SLinus Walleij if (!di->events.main_thermal_prot && 1475c5b64a99SLinus Walleij !di->events.usb_thermal_prot) 1476c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1477c5b64a99SLinus Walleij break; 1478c5b64a99SLinus Walleij 1479c5b64a99SLinus Walleij case STATE_OVV_PROTECT_INIT: 1480c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1481c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_OVV_PROTECT); 1482c5b64a99SLinus Walleij fallthrough; 1483c5b64a99SLinus Walleij 1484c5b64a99SLinus Walleij case STATE_OVV_PROTECT: 1485c5b64a99SLinus Walleij if (!di->events.vbus_ovv && 1486c5b64a99SLinus Walleij !di->events.main_ovv && 1487c5b64a99SLinus Walleij !di->events.batt_ovv && 1488c5b64a99SLinus Walleij di->chg_info.usb_chg_ok && 1489c5b64a99SLinus Walleij di->chg_info.ac_chg_ok) 1490c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1491c5b64a99SLinus Walleij break; 1492c5b64a99SLinus Walleij 1493c5b64a99SLinus Walleij case STATE_CHG_NOT_OK_INIT: 1494c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1495c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_CHG_NOT_OK); 1496c5b64a99SLinus Walleij fallthrough; 1497c5b64a99SLinus Walleij 1498c5b64a99SLinus Walleij case STATE_CHG_NOT_OK: 1499c5b64a99SLinus Walleij if (!di->events.mainextchnotok && 1500c5b64a99SLinus Walleij !di->events.usbchargernotok) 1501c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1502c5b64a99SLinus Walleij break; 1503c5b64a99SLinus Walleij 1504c5b64a99SLinus Walleij case STATE_SAFETY_TIMER_EXPIRED_INIT: 1505c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1506c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_SAFETY_TIMER_EXPIRED); 1507c5b64a99SLinus Walleij fallthrough; 1508c5b64a99SLinus Walleij 1509c5b64a99SLinus Walleij case STATE_SAFETY_TIMER_EXPIRED: 1510c5b64a99SLinus Walleij /* We exit this state when charger is removed */ 1511c5b64a99SLinus Walleij break; 1512c5b64a99SLinus Walleij 1513c5b64a99SLinus Walleij case STATE_NORMAL_INIT: 151483e5aa77SLinus Walleij if (di->curr_status.curr_step_ua == CHARGALG_CURR_STEP_LOW_UA) 1515c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1516c5b64a99SLinus Walleij else { 151783e5aa77SLinus Walleij curr_step_lvl_ua = bi->constant_charge_current_max_ua 151883e5aa77SLinus Walleij * di->curr_status.curr_step_ua 151983e5aa77SLinus Walleij / CHARGALG_CURR_STEP_HIGH_UA; 1520c5b64a99SLinus Walleij ab8500_chargalg_start_charging(di, 1521bc6e0287SLinus Walleij bi->constant_charge_voltage_max_uv, 152283e5aa77SLinus Walleij curr_step_lvl_ua); 1523c5b64a99SLinus Walleij } 1524c5b64a99SLinus Walleij 1525c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL); 1526c5b64a99SLinus Walleij ab8500_chargalg_start_safety_timer(di); 1527c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1528c5b64a99SLinus Walleij init_maxim_chg_curr(di); 1529c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_CHARGING; 1530c5b64a99SLinus Walleij di->eoc_cnt = 0; 1531c5b64a99SLinus Walleij di->maintenance_chg = false; 1532c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1533c5b64a99SLinus Walleij 1534c5b64a99SLinus Walleij break; 1535c5b64a99SLinus Walleij 1536c5b64a99SLinus Walleij case STATE_NORMAL: 1537c5b64a99SLinus Walleij handle_maxim_chg_curr(di); 1538c5b64a99SLinus Walleij if (di->charge_status == POWER_SUPPLY_STATUS_FULL && 1539c5b64a99SLinus Walleij di->maintenance_chg) { 1540c5b64a99SLinus Walleij if (di->bm->no_maintenance) 1541c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1542c5b64a99SLinus Walleij STATE_WAIT_FOR_RECHARGE_INIT); 1543c5b64a99SLinus Walleij else 1544c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, 1545c5b64a99SLinus Walleij STATE_MAINTENANCE_A_INIT); 1546c5b64a99SLinus Walleij } 1547c5b64a99SLinus Walleij break; 1548c5b64a99SLinus Walleij 1549c5b64a99SLinus Walleij /* This state will be used when the maintenance state is disabled */ 1550c5b64a99SLinus Walleij case STATE_WAIT_FOR_RECHARGE_INIT: 1551c5b64a99SLinus Walleij ab8500_chargalg_hold_charging(di); 1552c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_WAIT_FOR_RECHARGE); 1553c5b64a99SLinus Walleij fallthrough; 1554c5b64a99SLinus Walleij 1555c5b64a99SLinus Walleij case STATE_WAIT_FOR_RECHARGE: 15561091ed7dSLinus Walleij if (di->batt_data.percent <= AB8500_RECHARGE_CAP) 1557c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1558c5b64a99SLinus Walleij break; 1559c5b64a99SLinus Walleij 1560c5b64a99SLinus Walleij case STATE_MAINTENANCE_A_INIT: 1561c5b64a99SLinus Walleij ab8500_chargalg_stop_safety_timer(di); 1562c5b64a99SLinus Walleij ab8500_chargalg_start_maintenance_timer(di, 1563e5dff305SLinus Walleij di->bm->bat_type->maint_a_chg_timer_h); 1564c5b64a99SLinus Walleij ab8500_chargalg_start_charging(di, 1565e5dff305SLinus Walleij di->bm->bat_type->maint_a_vol_lvl, 1566e5dff305SLinus Walleij di->bm->bat_type->maint_a_cur_lvl); 1567c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_MAINTENANCE_A); 1568c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1569c5b64a99SLinus Walleij fallthrough; 1570c5b64a99SLinus Walleij 1571c5b64a99SLinus Walleij case STATE_MAINTENANCE_A: 1572c5b64a99SLinus Walleij if (di->events.maintenance_timer_expired) { 1573c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1574c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_MAINTENANCE_B_INIT); 1575c5b64a99SLinus Walleij } 1576c5b64a99SLinus Walleij break; 1577c5b64a99SLinus Walleij 1578c5b64a99SLinus Walleij case STATE_MAINTENANCE_B_INIT: 1579c5b64a99SLinus Walleij ab8500_chargalg_start_maintenance_timer(di, 1580e5dff305SLinus Walleij di->bm->bat_type->maint_b_chg_timer_h); 1581c5b64a99SLinus Walleij ab8500_chargalg_start_charging(di, 1582e5dff305SLinus Walleij di->bm->bat_type->maint_b_vol_lvl, 1583e5dff305SLinus Walleij di->bm->bat_type->maint_b_cur_lvl); 1584c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_MAINTENANCE_B); 1585c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1586c5b64a99SLinus Walleij fallthrough; 1587c5b64a99SLinus Walleij 1588c5b64a99SLinus Walleij case STATE_MAINTENANCE_B: 1589c5b64a99SLinus Walleij if (di->events.maintenance_timer_expired) { 1590c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1591c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1592c5b64a99SLinus Walleij } 1593c5b64a99SLinus Walleij break; 1594c5b64a99SLinus Walleij 1595c5b64a99SLinus Walleij case STATE_TEMP_LOWHIGH_INIT: 1596c5b64a99SLinus Walleij ab8500_chargalg_start_charging(di, 1597e5dff305SLinus Walleij di->bm->bat_type->low_high_vol_lvl, 1598e5dff305SLinus Walleij di->bm->bat_type->low_high_cur_lvl); 1599c5b64a99SLinus Walleij ab8500_chargalg_stop_maintenance_timer(di); 1600c5b64a99SLinus Walleij di->charge_status = POWER_SUPPLY_STATUS_CHARGING; 1601c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_TEMP_LOWHIGH); 1602c5b64a99SLinus Walleij power_supply_changed(di->chargalg_psy); 1603c5b64a99SLinus Walleij fallthrough; 1604c5b64a99SLinus Walleij 1605c5b64a99SLinus Walleij case STATE_TEMP_LOWHIGH: 1606c5b64a99SLinus Walleij if (!di->events.btemp_lowhigh) 1607c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1608c5b64a99SLinus Walleij break; 1609c5b64a99SLinus Walleij 1610c5b64a99SLinus Walleij case STATE_WD_EXPIRED_INIT: 1611c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1612c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_WD_EXPIRED); 1613c5b64a99SLinus Walleij fallthrough; 1614c5b64a99SLinus Walleij 1615c5b64a99SLinus Walleij case STATE_WD_EXPIRED: 1616c5b64a99SLinus Walleij if (!di->events.ac_wd_expired && 1617c5b64a99SLinus Walleij !di->events.usb_wd_expired) 1618c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1619c5b64a99SLinus Walleij break; 1620c5b64a99SLinus Walleij 1621c5b64a99SLinus Walleij case STATE_TEMP_UNDEROVER_INIT: 1622c5b64a99SLinus Walleij ab8500_chargalg_stop_charging(di); 1623c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_TEMP_UNDEROVER); 1624c5b64a99SLinus Walleij fallthrough; 1625c5b64a99SLinus Walleij 1626c5b64a99SLinus Walleij case STATE_TEMP_UNDEROVER: 1627c5b64a99SLinus Walleij if (!di->events.btemp_underover) 1628c5b64a99SLinus Walleij ab8500_chargalg_state_to(di, STATE_NORMAL_INIT); 1629c5b64a99SLinus Walleij break; 1630c5b64a99SLinus Walleij } 1631c5b64a99SLinus Walleij 1632c5b64a99SLinus Walleij /* Start charging directly if the new state is a charge state */ 1633c5b64a99SLinus Walleij if (di->charge_state == STATE_NORMAL_INIT || 1634c5b64a99SLinus Walleij di->charge_state == STATE_MAINTENANCE_A_INIT || 1635c5b64a99SLinus Walleij di->charge_state == STATE_MAINTENANCE_B_INIT) 1636c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 1637c5b64a99SLinus Walleij } 1638c5b64a99SLinus Walleij 1639c5b64a99SLinus Walleij /** 1640c5b64a99SLinus Walleij * ab8500_chargalg_periodic_work() - Periodic work for the algorithm 1641c5b64a99SLinus Walleij * @work: pointer to the work_struct structure 1642c5b64a99SLinus Walleij * 1643c5b64a99SLinus Walleij * Work queue function for the charging algorithm 1644c5b64a99SLinus Walleij */ 1645c5b64a99SLinus Walleij static void ab8500_chargalg_periodic_work(struct work_struct *work) 1646c5b64a99SLinus Walleij { 1647c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(work, 1648c5b64a99SLinus Walleij struct ab8500_chargalg, chargalg_periodic_work.work); 1649c5b64a99SLinus Walleij 1650c5b64a99SLinus Walleij ab8500_chargalg_algorithm(di); 1651c5b64a99SLinus Walleij 1652c5b64a99SLinus Walleij /* 1653c5b64a99SLinus Walleij * If a charger is connected then the battery has to be monitored 1654c5b64a99SLinus Walleij * frequently, else the work can be delayed. 1655c5b64a99SLinus Walleij */ 1656c5b64a99SLinus Walleij if (di->chg_info.conn_chg) 1657c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1658c5b64a99SLinus Walleij &di->chargalg_periodic_work, 1659c5b64a99SLinus Walleij di->bm->interval_charging * HZ); 1660c5b64a99SLinus Walleij else 1661c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1662c5b64a99SLinus Walleij &di->chargalg_periodic_work, 1663c5b64a99SLinus Walleij di->bm->interval_not_charging * HZ); 1664c5b64a99SLinus Walleij } 1665c5b64a99SLinus Walleij 1666c5b64a99SLinus Walleij /** 1667c5b64a99SLinus Walleij * ab8500_chargalg_wd_work() - periodic work to kick the charger watchdog 1668c5b64a99SLinus Walleij * @work: pointer to the work_struct structure 1669c5b64a99SLinus Walleij * 1670c5b64a99SLinus Walleij * Work queue function for kicking the charger watchdog 1671c5b64a99SLinus Walleij */ 1672c5b64a99SLinus Walleij static void ab8500_chargalg_wd_work(struct work_struct *work) 1673c5b64a99SLinus Walleij { 1674c5b64a99SLinus Walleij int ret; 1675c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(work, 1676c5b64a99SLinus Walleij struct ab8500_chargalg, chargalg_wd_work.work); 1677c5b64a99SLinus Walleij 1678c5b64a99SLinus Walleij ret = ab8500_chargalg_kick_watchdog(di); 1679c5b64a99SLinus Walleij if (ret < 0) 1680c5b64a99SLinus Walleij dev_err(di->dev, "failed to kick watchdog\n"); 1681c5b64a99SLinus Walleij 1682c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, 1683c5b64a99SLinus Walleij &di->chargalg_wd_work, CHG_WD_INTERVAL); 1684c5b64a99SLinus Walleij } 1685c5b64a99SLinus Walleij 1686c5b64a99SLinus Walleij /** 1687c5b64a99SLinus Walleij * ab8500_chargalg_work() - Work to run the charging algorithm instantly 1688c5b64a99SLinus Walleij * @work: pointer to the work_struct structure 1689c5b64a99SLinus Walleij * 1690c5b64a99SLinus Walleij * Work queue function for calling the charging algorithm 1691c5b64a99SLinus Walleij */ 1692c5b64a99SLinus Walleij static void ab8500_chargalg_work(struct work_struct *work) 1693c5b64a99SLinus Walleij { 1694c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(work, 1695c5b64a99SLinus Walleij struct ab8500_chargalg, chargalg_work); 1696c5b64a99SLinus Walleij 1697c5b64a99SLinus Walleij ab8500_chargalg_algorithm(di); 1698c5b64a99SLinus Walleij } 1699c5b64a99SLinus Walleij 1700c5b64a99SLinus Walleij /** 1701c5b64a99SLinus Walleij * ab8500_chargalg_get_property() - get the chargalg properties 1702c5b64a99SLinus Walleij * @psy: pointer to the power_supply structure 1703c5b64a99SLinus Walleij * @psp: pointer to the power_supply_property structure 1704c5b64a99SLinus Walleij * @val: pointer to the power_supply_propval union 1705c5b64a99SLinus Walleij * 1706c5b64a99SLinus Walleij * This function gets called when an application tries to get the 1707c5b64a99SLinus Walleij * chargalg properties by reading the sysfs files. 1708c5b64a99SLinus Walleij * status: charging/discharging/full/unknown 1709c5b64a99SLinus Walleij * health: health of the battery 1710c5b64a99SLinus Walleij * Returns error code in case of failure else 0 on success 1711c5b64a99SLinus Walleij */ 1712c5b64a99SLinus Walleij static int ab8500_chargalg_get_property(struct power_supply *psy, 1713c5b64a99SLinus Walleij enum power_supply_property psp, 1714c5b64a99SLinus Walleij union power_supply_propval *val) 1715c5b64a99SLinus Walleij { 1716c5b64a99SLinus Walleij struct ab8500_chargalg *di = power_supply_get_drvdata(psy); 1717c5b64a99SLinus Walleij 1718c5b64a99SLinus Walleij switch (psp) { 1719c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_STATUS: 1720c5b64a99SLinus Walleij val->intval = di->charge_status; 1721c5b64a99SLinus Walleij break; 1722c5b64a99SLinus Walleij case POWER_SUPPLY_PROP_HEALTH: 1723c5b64a99SLinus Walleij if (di->events.batt_ovv) { 1724c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; 1725c5b64a99SLinus Walleij } else if (di->events.btemp_underover) { 1726*25fd3303SLinus Walleij if (di->batt_data.temp <= di->bm->bi->temp_min) 1727c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_COLD; 1728c5b64a99SLinus Walleij else 1729c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; 1730c5b64a99SLinus Walleij } else if (di->charge_state == STATE_SAFETY_TIMER_EXPIRED || 1731c5b64a99SLinus Walleij di->charge_state == STATE_SAFETY_TIMER_EXPIRED_INIT) { 1732c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; 1733c5b64a99SLinus Walleij } else { 1734c5b64a99SLinus Walleij val->intval = POWER_SUPPLY_HEALTH_GOOD; 1735c5b64a99SLinus Walleij } 1736c5b64a99SLinus Walleij break; 1737c5b64a99SLinus Walleij default: 1738c5b64a99SLinus Walleij return -EINVAL; 1739c5b64a99SLinus Walleij } 1740c5b64a99SLinus Walleij return 0; 1741c5b64a99SLinus Walleij } 1742c5b64a99SLinus Walleij 1743c5b64a99SLinus Walleij /* Exposure to the sysfs interface */ 1744c5b64a99SLinus Walleij 1745c5b64a99SLinus Walleij static ssize_t ab8500_chargalg_curr_step_show(struct ab8500_chargalg *di, 1746c5b64a99SLinus Walleij char *buf) 1747c5b64a99SLinus Walleij { 174883e5aa77SLinus Walleij return sprintf(buf, "%d\n", di->curr_status.curr_step_ua); 1749c5b64a99SLinus Walleij } 1750c5b64a99SLinus Walleij 1751c5b64a99SLinus Walleij static ssize_t ab8500_chargalg_curr_step_store(struct ab8500_chargalg *di, 1752c5b64a99SLinus Walleij const char *buf, size_t length) 1753c5b64a99SLinus Walleij { 175438334231SColin Ian King long param; 1755c5b64a99SLinus Walleij int ret; 1756c5b64a99SLinus Walleij 1757c5b64a99SLinus Walleij ret = kstrtol(buf, 10, ¶m); 1758c5b64a99SLinus Walleij if (ret < 0) 1759c5b64a99SLinus Walleij return ret; 1760c5b64a99SLinus Walleij 176183e5aa77SLinus Walleij di->curr_status.curr_step_ua = param; 176283e5aa77SLinus Walleij if (di->curr_status.curr_step_ua >= CHARGALG_CURR_STEP_LOW_UA && 176383e5aa77SLinus Walleij di->curr_status.curr_step_ua <= CHARGALG_CURR_STEP_HIGH_UA) { 1764c5b64a99SLinus Walleij di->curr_status.curr_step_change = true; 1765c5b64a99SLinus Walleij queue_work(di->chargalg_wq, &di->chargalg_work); 1766c5b64a99SLinus Walleij } else 1767c5b64a99SLinus Walleij dev_info(di->dev, "Wrong current step\n" 1768c5b64a99SLinus Walleij "Enter 0. Disable AC/USB Charging\n" 1769c5b64a99SLinus Walleij "1--100. Set AC/USB charging current step\n" 1770c5b64a99SLinus Walleij "100. Enable AC/USB Charging\n"); 1771c5b64a99SLinus Walleij 1772c5b64a99SLinus Walleij return strlen(buf); 1773c5b64a99SLinus Walleij } 1774c5b64a99SLinus Walleij 1775c5b64a99SLinus Walleij 1776c5b64a99SLinus Walleij static ssize_t ab8500_chargalg_en_show(struct ab8500_chargalg *di, 1777c5b64a99SLinus Walleij char *buf) 1778c5b64a99SLinus Walleij { 1779c5b64a99SLinus Walleij return sprintf(buf, "%d\n", 1780c5b64a99SLinus Walleij di->susp_status.ac_suspended && 1781c5b64a99SLinus Walleij di->susp_status.usb_suspended); 1782c5b64a99SLinus Walleij } 1783c5b64a99SLinus Walleij 1784c5b64a99SLinus Walleij static ssize_t ab8500_chargalg_en_store(struct ab8500_chargalg *di, 1785c5b64a99SLinus Walleij const char *buf, size_t length) 1786c5b64a99SLinus Walleij { 178738334231SColin Ian King long param; 1788c5b64a99SLinus Walleij int ac_usb; 1789c5b64a99SLinus Walleij int ret; 1790c5b64a99SLinus Walleij 1791c5b64a99SLinus Walleij ret = kstrtol(buf, 10, ¶m); 1792c5b64a99SLinus Walleij if (ret < 0) 1793c5b64a99SLinus Walleij return ret; 1794c5b64a99SLinus Walleij 1795c5b64a99SLinus Walleij ac_usb = param; 1796c5b64a99SLinus Walleij switch (ac_usb) { 1797c5b64a99SLinus Walleij case 0: 1798c5b64a99SLinus Walleij /* Disable charging */ 1799c5b64a99SLinus Walleij di->susp_status.ac_suspended = true; 1800c5b64a99SLinus Walleij di->susp_status.usb_suspended = true; 1801c5b64a99SLinus Walleij di->susp_status.suspended_change = true; 1802c5b64a99SLinus Walleij /* Trigger a state change */ 1803c5b64a99SLinus Walleij queue_work(di->chargalg_wq, 1804c5b64a99SLinus Walleij &di->chargalg_work); 1805c5b64a99SLinus Walleij break; 1806c5b64a99SLinus Walleij case 1: 1807c5b64a99SLinus Walleij /* Enable AC Charging */ 1808c5b64a99SLinus Walleij di->susp_status.ac_suspended = false; 1809c5b64a99SLinus Walleij di->susp_status.suspended_change = true; 1810c5b64a99SLinus Walleij /* Trigger a state change */ 1811c5b64a99SLinus Walleij queue_work(di->chargalg_wq, 1812c5b64a99SLinus Walleij &di->chargalg_work); 1813c5b64a99SLinus Walleij break; 1814c5b64a99SLinus Walleij case 2: 1815c5b64a99SLinus Walleij /* Enable USB charging */ 1816c5b64a99SLinus Walleij di->susp_status.usb_suspended = false; 1817c5b64a99SLinus Walleij di->susp_status.suspended_change = true; 1818c5b64a99SLinus Walleij /* Trigger a state change */ 1819c5b64a99SLinus Walleij queue_work(di->chargalg_wq, 1820c5b64a99SLinus Walleij &di->chargalg_work); 1821c5b64a99SLinus Walleij break; 1822c5b64a99SLinus Walleij default: 1823c5b64a99SLinus Walleij dev_info(di->dev, "Wrong input\n" 1824c5b64a99SLinus Walleij "Enter 0. Disable AC/USB Charging\n" 1825c5b64a99SLinus Walleij "1. Enable AC charging\n" 1826c5b64a99SLinus Walleij "2. Enable USB Charging\n"); 1827c5b64a99SLinus Walleij } 1828c5b64a99SLinus Walleij return strlen(buf); 1829c5b64a99SLinus Walleij } 1830c5b64a99SLinus Walleij 1831c5b64a99SLinus Walleij static struct ab8500_chargalg_sysfs_entry ab8500_chargalg_en_charger = 1832c5b64a99SLinus Walleij __ATTR(chargalg, 0644, ab8500_chargalg_en_show, 1833c5b64a99SLinus Walleij ab8500_chargalg_en_store); 1834c5b64a99SLinus Walleij 1835c5b64a99SLinus Walleij static struct ab8500_chargalg_sysfs_entry ab8500_chargalg_curr_step = 1836c5b64a99SLinus Walleij __ATTR(chargalg_curr_step, 0644, ab8500_chargalg_curr_step_show, 1837c5b64a99SLinus Walleij ab8500_chargalg_curr_step_store); 1838c5b64a99SLinus Walleij 1839c5b64a99SLinus Walleij static ssize_t ab8500_chargalg_sysfs_show(struct kobject *kobj, 1840c5b64a99SLinus Walleij struct attribute *attr, char *buf) 1841c5b64a99SLinus Walleij { 1842c5b64a99SLinus Walleij struct ab8500_chargalg_sysfs_entry *entry = container_of(attr, 1843c5b64a99SLinus Walleij struct ab8500_chargalg_sysfs_entry, attr); 1844c5b64a99SLinus Walleij 1845c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(kobj, 1846c5b64a99SLinus Walleij struct ab8500_chargalg, chargalg_kobject); 1847c5b64a99SLinus Walleij 1848c5b64a99SLinus Walleij if (!entry->show) 1849c5b64a99SLinus Walleij return -EIO; 1850c5b64a99SLinus Walleij 1851c5b64a99SLinus Walleij return entry->show(di, buf); 1852c5b64a99SLinus Walleij } 1853c5b64a99SLinus Walleij 1854c5b64a99SLinus Walleij static ssize_t ab8500_chargalg_sysfs_charger(struct kobject *kobj, 1855c5b64a99SLinus Walleij struct attribute *attr, const char *buf, size_t length) 1856c5b64a99SLinus Walleij { 1857c5b64a99SLinus Walleij struct ab8500_chargalg_sysfs_entry *entry = container_of(attr, 1858c5b64a99SLinus Walleij struct ab8500_chargalg_sysfs_entry, attr); 1859c5b64a99SLinus Walleij 1860c5b64a99SLinus Walleij struct ab8500_chargalg *di = container_of(kobj, 1861c5b64a99SLinus Walleij struct ab8500_chargalg, chargalg_kobject); 1862c5b64a99SLinus Walleij 1863c5b64a99SLinus Walleij if (!entry->store) 1864c5b64a99SLinus Walleij return -EIO; 1865c5b64a99SLinus Walleij 1866c5b64a99SLinus Walleij return entry->store(di, buf, length); 1867c5b64a99SLinus Walleij } 1868c5b64a99SLinus Walleij 1869c5b64a99SLinus Walleij static struct attribute *ab8500_chargalg_chg[] = { 1870c5b64a99SLinus Walleij &ab8500_chargalg_en_charger.attr, 1871c5b64a99SLinus Walleij &ab8500_chargalg_curr_step.attr, 1872c5b64a99SLinus Walleij NULL, 1873c5b64a99SLinus Walleij }; 1874c5b64a99SLinus Walleij 1875c5b64a99SLinus Walleij static const struct sysfs_ops ab8500_chargalg_sysfs_ops = { 1876c5b64a99SLinus Walleij .show = ab8500_chargalg_sysfs_show, 1877c5b64a99SLinus Walleij .store = ab8500_chargalg_sysfs_charger, 1878c5b64a99SLinus Walleij }; 1879c5b64a99SLinus Walleij 1880c5b64a99SLinus Walleij static struct kobj_type ab8500_chargalg_ktype = { 1881c5b64a99SLinus Walleij .sysfs_ops = &ab8500_chargalg_sysfs_ops, 1882c5b64a99SLinus Walleij .default_attrs = ab8500_chargalg_chg, 1883c5b64a99SLinus Walleij }; 1884c5b64a99SLinus Walleij 1885c5b64a99SLinus Walleij /** 1886c5b64a99SLinus Walleij * ab8500_chargalg_sysfs_exit() - de-init of sysfs entry 1887c5b64a99SLinus Walleij * @di: pointer to the struct ab8500_chargalg 1888c5b64a99SLinus Walleij * 1889c5b64a99SLinus Walleij * This function removes the entry in sysfs. 1890c5b64a99SLinus Walleij */ 1891c5b64a99SLinus Walleij static void ab8500_chargalg_sysfs_exit(struct ab8500_chargalg *di) 1892c5b64a99SLinus Walleij { 1893c5b64a99SLinus Walleij kobject_del(&di->chargalg_kobject); 1894c5b64a99SLinus Walleij } 1895c5b64a99SLinus Walleij 1896c5b64a99SLinus Walleij /** 1897c5b64a99SLinus Walleij * ab8500_chargalg_sysfs_init() - init of sysfs entry 1898c5b64a99SLinus Walleij * @di: pointer to the struct ab8500_chargalg 1899c5b64a99SLinus Walleij * 1900c5b64a99SLinus Walleij * This function adds an entry in sysfs. 1901c5b64a99SLinus Walleij * Returns error code in case of failure else 0(on success) 1902c5b64a99SLinus Walleij */ 1903c5b64a99SLinus Walleij static int ab8500_chargalg_sysfs_init(struct ab8500_chargalg *di) 1904c5b64a99SLinus Walleij { 1905c5b64a99SLinus Walleij int ret = 0; 1906c5b64a99SLinus Walleij 1907c5b64a99SLinus Walleij ret = kobject_init_and_add(&di->chargalg_kobject, 1908c5b64a99SLinus Walleij &ab8500_chargalg_ktype, 1909c5b64a99SLinus Walleij NULL, "ab8500_chargalg"); 1910c5b64a99SLinus Walleij if (ret < 0) 1911c5b64a99SLinus Walleij dev_err(di->dev, "failed to create sysfs entry\n"); 1912c5b64a99SLinus Walleij 1913c5b64a99SLinus Walleij return ret; 1914c5b64a99SLinus Walleij } 1915c5b64a99SLinus Walleij /* Exposure to the sysfs interface <<END>> */ 1916c5b64a99SLinus Walleij 1917c5b64a99SLinus Walleij static int __maybe_unused ab8500_chargalg_resume(struct device *dev) 1918c5b64a99SLinus Walleij { 1919c5b64a99SLinus Walleij struct ab8500_chargalg *di = dev_get_drvdata(dev); 1920c5b64a99SLinus Walleij 1921c5b64a99SLinus Walleij /* Kick charger watchdog if charging (any charger online) */ 1922c5b64a99SLinus Walleij if (di->chg_info.online_chg) 1923c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, &di->chargalg_wd_work, 0); 1924c5b64a99SLinus Walleij 1925c5b64a99SLinus Walleij /* 1926c5b64a99SLinus Walleij * Run the charging algorithm directly to be sure we don't 1927c5b64a99SLinus Walleij * do it too seldom 1928c5b64a99SLinus Walleij */ 1929c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0); 1930c5b64a99SLinus Walleij 1931c5b64a99SLinus Walleij return 0; 1932c5b64a99SLinus Walleij } 1933c5b64a99SLinus Walleij 1934c5b64a99SLinus Walleij static int __maybe_unused ab8500_chargalg_suspend(struct device *dev) 1935c5b64a99SLinus Walleij { 1936c5b64a99SLinus Walleij struct ab8500_chargalg *di = dev_get_drvdata(dev); 1937c5b64a99SLinus Walleij 1938c5b64a99SLinus Walleij if (di->chg_info.online_chg) 1939c5b64a99SLinus Walleij cancel_delayed_work_sync(&di->chargalg_wd_work); 1940c5b64a99SLinus Walleij 1941c5b64a99SLinus Walleij cancel_delayed_work_sync(&di->chargalg_periodic_work); 1942c5b64a99SLinus Walleij 1943c5b64a99SLinus Walleij return 0; 1944c5b64a99SLinus Walleij } 1945c5b64a99SLinus Walleij 1946c5b64a99SLinus Walleij static char *supply_interface[] = { 1947c5b64a99SLinus Walleij "ab8500_fg", 1948c5b64a99SLinus Walleij }; 1949c5b64a99SLinus Walleij 1950c5b64a99SLinus Walleij static const struct power_supply_desc ab8500_chargalg_desc = { 1951661d10eeSLinus Walleij .name = "ab8500_chargalg", 1952c5b64a99SLinus Walleij .type = POWER_SUPPLY_TYPE_BATTERY, 1953c5b64a99SLinus Walleij .properties = ab8500_chargalg_props, 1954c5b64a99SLinus Walleij .num_properties = ARRAY_SIZE(ab8500_chargalg_props), 1955c5b64a99SLinus Walleij .get_property = ab8500_chargalg_get_property, 1956c5b64a99SLinus Walleij .external_power_changed = ab8500_chargalg_external_power_changed, 1957c5b64a99SLinus Walleij }; 1958c5b64a99SLinus Walleij 1959c5b64a99SLinus Walleij static int ab8500_chargalg_bind(struct device *dev, struct device *master, 1960c5b64a99SLinus Walleij void *data) 1961c5b64a99SLinus Walleij { 1962c5b64a99SLinus Walleij struct ab8500_chargalg *di = dev_get_drvdata(dev); 1963c5b64a99SLinus Walleij 1964c5b64a99SLinus Walleij /* Create a work queue for the chargalg */ 1965c5b64a99SLinus Walleij di->chargalg_wq = alloc_ordered_workqueue("ab8500_chargalg_wq", 1966c5b64a99SLinus Walleij WQ_MEM_RECLAIM); 1967c5b64a99SLinus Walleij if (di->chargalg_wq == NULL) { 1968c5b64a99SLinus Walleij dev_err(di->dev, "failed to create work queue\n"); 1969c5b64a99SLinus Walleij return -ENOMEM; 1970c5b64a99SLinus Walleij } 1971c5b64a99SLinus Walleij 1972c5b64a99SLinus Walleij /* Run the charging algorithm */ 1973c5b64a99SLinus Walleij queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0); 1974c5b64a99SLinus Walleij 1975c5b64a99SLinus Walleij return 0; 1976c5b64a99SLinus Walleij } 1977c5b64a99SLinus Walleij 1978c5b64a99SLinus Walleij static void ab8500_chargalg_unbind(struct device *dev, struct device *master, 1979c5b64a99SLinus Walleij void *data) 1980c5b64a99SLinus Walleij { 1981c5b64a99SLinus Walleij struct ab8500_chargalg *di = dev_get_drvdata(dev); 1982c5b64a99SLinus Walleij 1983c5b64a99SLinus Walleij /* Stop all timers and work */ 1984c5b64a99SLinus Walleij hrtimer_cancel(&di->safety_timer); 1985c5b64a99SLinus Walleij hrtimer_cancel(&di->maintenance_timer); 1986c5b64a99SLinus Walleij 1987c5b64a99SLinus Walleij cancel_delayed_work_sync(&di->chargalg_periodic_work); 1988c5b64a99SLinus Walleij cancel_delayed_work_sync(&di->chargalg_wd_work); 1989c5b64a99SLinus Walleij cancel_work_sync(&di->chargalg_work); 1990c5b64a99SLinus Walleij 1991c5b64a99SLinus Walleij /* Delete the work queue */ 1992c5b64a99SLinus Walleij destroy_workqueue(di->chargalg_wq); 1993c5b64a99SLinus Walleij flush_scheduled_work(); 1994c5b64a99SLinus Walleij } 1995c5b64a99SLinus Walleij 1996c5b64a99SLinus Walleij static const struct component_ops ab8500_chargalg_component_ops = { 1997c5b64a99SLinus Walleij .bind = ab8500_chargalg_bind, 1998c5b64a99SLinus Walleij .unbind = ab8500_chargalg_unbind, 1999c5b64a99SLinus Walleij }; 2000c5b64a99SLinus Walleij 2001c5b64a99SLinus Walleij static int ab8500_chargalg_probe(struct platform_device *pdev) 2002c5b64a99SLinus Walleij { 2003c5b64a99SLinus Walleij struct device *dev = &pdev->dev; 2004c5b64a99SLinus Walleij struct power_supply_config psy_cfg = {}; 2005c5b64a99SLinus Walleij struct ab8500_chargalg *di; 2006c5b64a99SLinus Walleij int ret = 0; 2007c5b64a99SLinus Walleij 2008c5b64a99SLinus Walleij di = devm_kzalloc(dev, sizeof(*di), GFP_KERNEL); 2009c5b64a99SLinus Walleij if (!di) 2010c5b64a99SLinus Walleij return -ENOMEM; 2011c5b64a99SLinus Walleij 2012c5b64a99SLinus Walleij di->bm = &ab8500_bm_data; 2013c5b64a99SLinus Walleij 2014c5b64a99SLinus Walleij /* get device struct and parent */ 2015c5b64a99SLinus Walleij di->dev = dev; 2016c5b64a99SLinus Walleij di->parent = dev_get_drvdata(pdev->dev.parent); 2017c5b64a99SLinus Walleij 2018c5b64a99SLinus Walleij psy_cfg.supplied_to = supply_interface; 2019c5b64a99SLinus Walleij psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface); 2020c5b64a99SLinus Walleij psy_cfg.drv_data = di; 2021c5b64a99SLinus Walleij 2022c5b64a99SLinus Walleij /* Initilialize safety timer */ 2023c5b64a99SLinus Walleij hrtimer_init(&di->safety_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); 2024c5b64a99SLinus Walleij di->safety_timer.function = ab8500_chargalg_safety_timer_expired; 2025c5b64a99SLinus Walleij 2026c5b64a99SLinus Walleij /* Initilialize maintenance timer */ 2027c5b64a99SLinus Walleij hrtimer_init(&di->maintenance_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); 2028c5b64a99SLinus Walleij di->maintenance_timer.function = 2029c5b64a99SLinus Walleij ab8500_chargalg_maintenance_timer_expired; 2030c5b64a99SLinus Walleij 2031c5b64a99SLinus Walleij /* Init work for chargalg */ 2032c5b64a99SLinus Walleij INIT_DEFERRABLE_WORK(&di->chargalg_periodic_work, 2033c5b64a99SLinus Walleij ab8500_chargalg_periodic_work); 2034c5b64a99SLinus Walleij INIT_DEFERRABLE_WORK(&di->chargalg_wd_work, 2035c5b64a99SLinus Walleij ab8500_chargalg_wd_work); 2036c5b64a99SLinus Walleij 2037c5b64a99SLinus Walleij /* Init work for chargalg */ 2038c5b64a99SLinus Walleij INIT_WORK(&di->chargalg_work, ab8500_chargalg_work); 2039c5b64a99SLinus Walleij 2040c5b64a99SLinus Walleij /* To detect charger at startup */ 2041c5b64a99SLinus Walleij di->chg_info.prev_conn_chg = -1; 2042c5b64a99SLinus Walleij 2043c5b64a99SLinus Walleij /* Register chargalg power supply class */ 2044c5b64a99SLinus Walleij di->chargalg_psy = devm_power_supply_register(di->dev, 2045c5b64a99SLinus Walleij &ab8500_chargalg_desc, 2046c5b64a99SLinus Walleij &psy_cfg); 2047c5b64a99SLinus Walleij if (IS_ERR(di->chargalg_psy)) { 2048c5b64a99SLinus Walleij dev_err(di->dev, "failed to register chargalg psy\n"); 2049c5b64a99SLinus Walleij return PTR_ERR(di->chargalg_psy); 2050c5b64a99SLinus Walleij } 2051c5b64a99SLinus Walleij 2052c5b64a99SLinus Walleij platform_set_drvdata(pdev, di); 2053c5b64a99SLinus Walleij 2054c5b64a99SLinus Walleij /* sysfs interface to enable/disable charging from user space */ 2055c5b64a99SLinus Walleij ret = ab8500_chargalg_sysfs_init(di); 2056c5b64a99SLinus Walleij if (ret) { 2057c5b64a99SLinus Walleij dev_err(di->dev, "failed to create sysfs entry\n"); 2058c5b64a99SLinus Walleij return ret; 2059c5b64a99SLinus Walleij } 206083e5aa77SLinus Walleij di->curr_status.curr_step_ua = CHARGALG_CURR_STEP_HIGH_UA; 2061c5b64a99SLinus Walleij 2062c5b64a99SLinus Walleij dev_info(di->dev, "probe success\n"); 2063c5b64a99SLinus Walleij return component_add(dev, &ab8500_chargalg_component_ops); 2064c5b64a99SLinus Walleij } 2065c5b64a99SLinus Walleij 2066c5b64a99SLinus Walleij static int ab8500_chargalg_remove(struct platform_device *pdev) 2067c5b64a99SLinus Walleij { 2068c5b64a99SLinus Walleij struct ab8500_chargalg *di = platform_get_drvdata(pdev); 2069c5b64a99SLinus Walleij 2070c5b64a99SLinus Walleij component_del(&pdev->dev, &ab8500_chargalg_component_ops); 2071c5b64a99SLinus Walleij 2072c5b64a99SLinus Walleij /* sysfs interface to enable/disable charging from user space */ 2073c5b64a99SLinus Walleij ab8500_chargalg_sysfs_exit(di); 2074c5b64a99SLinus Walleij 2075c5b64a99SLinus Walleij return 0; 2076c5b64a99SLinus Walleij } 2077c5b64a99SLinus Walleij 2078c5b64a99SLinus Walleij static SIMPLE_DEV_PM_OPS(ab8500_chargalg_pm_ops, ab8500_chargalg_suspend, ab8500_chargalg_resume); 2079c5b64a99SLinus Walleij 2080c5b64a99SLinus Walleij static const struct of_device_id ab8500_chargalg_match[] = { 2081c5b64a99SLinus Walleij { .compatible = "stericsson,ab8500-chargalg", }, 2082c5b64a99SLinus Walleij { }, 2083c5b64a99SLinus Walleij }; 2084c5b64a99SLinus Walleij 2085c5b64a99SLinus Walleij struct platform_driver ab8500_chargalg_driver = { 2086c5b64a99SLinus Walleij .probe = ab8500_chargalg_probe, 2087c5b64a99SLinus Walleij .remove = ab8500_chargalg_remove, 2088c5b64a99SLinus Walleij .driver = { 2089c5b64a99SLinus Walleij .name = "ab8500_chargalg", 2090c5b64a99SLinus Walleij .of_match_table = ab8500_chargalg_match, 2091c5b64a99SLinus Walleij .pm = &ab8500_chargalg_pm_ops, 2092c5b64a99SLinus Walleij }, 2093c5b64a99SLinus Walleij }; 2094c5b64a99SLinus Walleij MODULE_LICENSE("GPL v2"); 2095c5b64a99SLinus Walleij MODULE_AUTHOR("Johan Palsson, Karl Komierowski"); 2096c5b64a99SLinus Walleij MODULE_ALIAS("platform:ab8500-chargalg"); 2097c5b64a99SLinus Walleij MODULE_DESCRIPTION("ab8500 battery charging algorithm"); 2098