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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/power/abx500_chargalg.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/power/abx500_chargalg.c')
-rw-r--r--ANDROID_3.4.5/drivers/power/abx500_chargalg.c1921
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diff --git a/ANDROID_3.4.5/drivers/power/abx500_chargalg.c b/ANDROID_3.4.5/drivers/power/abx500_chargalg.c
deleted file mode 100644
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--- a/ANDROID_3.4.5/drivers/power/abx500_chargalg.c
+++ /dev/null
@@ -1,1921 +0,0 @@
-/*
- * Copyright (C) ST-Ericsson SA 2012
- *
- * Charging algorithm driver for abx500 variants
- *
- * License Terms: GNU General Public License v2
- * Authors:
- * Johan Palsson <johan.palsson@stericsson.com>
- * Karl Komierowski <karl.komierowski@stericsson.com>
- * Arun R Murthy <arun.murthy@stericsson.com>
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/power_supply.h>
-#include <linux/completion.h>
-#include <linux/workqueue.h>
-#include <linux/kobject.h>
-#include <linux/mfd/abx500.h>
-#include <linux/mfd/abx500/ux500_chargalg.h>
-#include <linux/mfd/abx500/ab8500-bm.h>
-
-/* Watchdog kick interval */
-#define CHG_WD_INTERVAL (6 * HZ)
-
-/* End-of-charge criteria counter */
-#define EOC_COND_CNT 10
-
-/* Recharge criteria counter */
-#define RCH_COND_CNT 3
-
-#define to_abx500_chargalg_device_info(x) container_of((x), \
- struct abx500_chargalg, chargalg_psy);
-
-enum abx500_chargers {
- NO_CHG,
- AC_CHG,
- USB_CHG,
-};
-
-struct abx500_chargalg_charger_info {
- enum abx500_chargers conn_chg;
- enum abx500_chargers prev_conn_chg;
- enum abx500_chargers online_chg;
- enum abx500_chargers prev_online_chg;
- enum abx500_chargers charger_type;
- bool usb_chg_ok;
- bool ac_chg_ok;
- int usb_volt;
- int usb_curr;
- int ac_volt;
- int ac_curr;
- int usb_vset;
- int usb_iset;
- int ac_vset;
- int ac_iset;
-};
-
-struct abx500_chargalg_suspension_status {
- bool suspended_change;
- bool ac_suspended;
- bool usb_suspended;
-};
-
-struct abx500_chargalg_battery_data {
- int temp;
- int volt;
- int avg_curr;
- int inst_curr;
- int percent;
-};
-
-enum abx500_chargalg_states {
- STATE_HANDHELD_INIT,
- STATE_HANDHELD,
- STATE_CHG_NOT_OK_INIT,
- STATE_CHG_NOT_OK,
- STATE_HW_TEMP_PROTECT_INIT,
- STATE_HW_TEMP_PROTECT,
- STATE_NORMAL_INIT,
- STATE_NORMAL,
- STATE_WAIT_FOR_RECHARGE_INIT,
- STATE_WAIT_FOR_RECHARGE,
- STATE_MAINTENANCE_A_INIT,
- STATE_MAINTENANCE_A,
- STATE_MAINTENANCE_B_INIT,
- STATE_MAINTENANCE_B,
- STATE_TEMP_UNDEROVER_INIT,
- STATE_TEMP_UNDEROVER,
- STATE_TEMP_LOWHIGH_INIT,
- STATE_TEMP_LOWHIGH,
- STATE_SUSPENDED_INIT,
- STATE_SUSPENDED,
- STATE_OVV_PROTECT_INIT,
- STATE_OVV_PROTECT,
- STATE_SAFETY_TIMER_EXPIRED_INIT,
- STATE_SAFETY_TIMER_EXPIRED,
- STATE_BATT_REMOVED_INIT,
- STATE_BATT_REMOVED,
- STATE_WD_EXPIRED_INIT,
- STATE_WD_EXPIRED,
-};
-
-static const char *states[] = {
- "HANDHELD_INIT",
- "HANDHELD",
- "CHG_NOT_OK_INIT",
- "CHG_NOT_OK",
- "HW_TEMP_PROTECT_INIT",
- "HW_TEMP_PROTECT",
- "NORMAL_INIT",
- "NORMAL",
- "WAIT_FOR_RECHARGE_INIT",
- "WAIT_FOR_RECHARGE",
- "MAINTENANCE_A_INIT",
- "MAINTENANCE_A",
- "MAINTENANCE_B_INIT",
- "MAINTENANCE_B",
- "TEMP_UNDEROVER_INIT",
- "TEMP_UNDEROVER",
- "TEMP_LOWHIGH_INIT",
- "TEMP_LOWHIGH",
- "SUSPENDED_INIT",
- "SUSPENDED",
- "OVV_PROTECT_INIT",
- "OVV_PROTECT",
- "SAFETY_TIMER_EXPIRED_INIT",
- "SAFETY_TIMER_EXPIRED",
- "BATT_REMOVED_INIT",
- "BATT_REMOVED",
- "WD_EXPIRED_INIT",
- "WD_EXPIRED",
-};
-
-struct abx500_chargalg_events {
- bool batt_unknown;
- bool mainextchnotok;
- bool batt_ovv;
- bool batt_rem;
- bool btemp_underover;
- bool btemp_lowhigh;
- bool main_thermal_prot;
- bool usb_thermal_prot;
- bool main_ovv;
- bool vbus_ovv;
- bool usbchargernotok;
- bool safety_timer_expired;
- bool maintenance_timer_expired;
- bool ac_wd_expired;
- bool usb_wd_expired;
- bool ac_cv_active;
- bool usb_cv_active;
- bool vbus_collapsed;
-};
-
-/**
- * struct abx500_charge_curr_maximization - Charger maximization parameters
- * @original_iset: the non optimized/maximised charger current
- * @current_iset: the charging current used at this moment
- * @test_delta_i: the delta between the current we want to charge and the
- current that is really going into the battery
- * @condition_cnt: number of iterations needed before a new charger current
- is set
- * @max_current: maximum charger current
- * @wait_cnt: to avoid too fast current step down in case of charger
- * voltage collapse, we insert this delay between step
- * down
- * @level: tells in how many steps the charging current has been
- increased
- */
-struct abx500_charge_curr_maximization {
- int original_iset;
- int current_iset;
- int test_delta_i;
- int condition_cnt;
- int max_current;
- int wait_cnt;
- u8 level;
-};
-
-enum maxim_ret {
- MAXIM_RET_NOACTION,
- MAXIM_RET_CHANGE,
- MAXIM_RET_IBAT_TOO_HIGH,
-};
-
-/**
- * struct abx500_chargalg - abx500 Charging algorithm device information
- * @dev: pointer to the structure device
- * @charge_status: battery operating status
- * @eoc_cnt: counter used to determine end-of_charge
- * @rch_cnt: counter used to determine start of recharge
- * @maintenance_chg: indicate if maintenance charge is active
- * @t_hyst_norm temperature hysteresis when the temperature has been
- * over or under normal limits
- * @t_hyst_lowhigh temperature hysteresis when the temperature has been
- * over or under the high or low limits
- * @charge_state: current state of the charging algorithm
- * @ccm charging current maximization parameters
- * @chg_info: information about connected charger types
- * @batt_data: data of the battery
- * @susp_status: current charger suspension status
- * @pdata: pointer to the abx500_chargalg platform data
- * @bat: pointer to the abx500_bm platform data
- * @chargalg_psy: structure that holds the battery properties exposed by
- * the charging algorithm
- * @events: structure for information about events triggered
- * @chargalg_wq: work queue for running the charging algorithm
- * @chargalg_periodic_work: work to run the charging algorithm periodically
- * @chargalg_wd_work: work to kick the charger watchdog periodically
- * @chargalg_work: work to run the charging algorithm instantly
- * @safety_timer: charging safety timer
- * @maintenance_timer: maintenance charging timer
- * @chargalg_kobject: structure of type kobject
- */
-struct abx500_chargalg {
- struct device *dev;
- int charge_status;
- int eoc_cnt;
- int rch_cnt;
- bool maintenance_chg;
- int t_hyst_norm;
- int t_hyst_lowhigh;
- enum abx500_chargalg_states charge_state;
- struct abx500_charge_curr_maximization ccm;
- struct abx500_chargalg_charger_info chg_info;
- struct abx500_chargalg_battery_data batt_data;
- struct abx500_chargalg_suspension_status susp_status;
- struct abx500_chargalg_platform_data *pdata;
- struct abx500_bm_data *bat;
- struct power_supply chargalg_psy;
- struct ux500_charger *ac_chg;
- struct ux500_charger *usb_chg;
- struct abx500_chargalg_events events;
- struct workqueue_struct *chargalg_wq;
- struct delayed_work chargalg_periodic_work;
- struct delayed_work chargalg_wd_work;
- struct work_struct chargalg_work;
- struct timer_list safety_timer;
- struct timer_list maintenance_timer;
- struct kobject chargalg_kobject;
-};
-
-/* Main battery properties */
-static enum power_supply_property abx500_chargalg_props[] = {
- POWER_SUPPLY_PROP_STATUS,
- POWER_SUPPLY_PROP_HEALTH,
-};
-
-/**
- * abx500_chargalg_safety_timer_expired() - Expiration of the safety timer
- * @data: pointer to the abx500_chargalg structure
- *
- * This function gets called when the safety timer for the charger
- * expires
- */
-static void abx500_chargalg_safety_timer_expired(unsigned long data)
-{
- struct abx500_chargalg *di = (struct abx500_chargalg *) data;
- dev_err(di->dev, "Safety timer expired\n");
- di->events.safety_timer_expired = true;
-
- /* Trigger execution of the algorithm instantly */
- queue_work(di->chargalg_wq, &di->chargalg_work);
-}
-
-/**
- * abx500_chargalg_maintenance_timer_expired() - Expiration of
- * the maintenance timer
- * @i: pointer to the abx500_chargalg structure
- *
- * This function gets called when the maintenence timer
- * expires
- */
-static void abx500_chargalg_maintenance_timer_expired(unsigned long data)
-{
-
- struct abx500_chargalg *di = (struct abx500_chargalg *) data;
- dev_dbg(di->dev, "Maintenance timer expired\n");
- di->events.maintenance_timer_expired = true;
-
- /* Trigger execution of the algorithm instantly */
- queue_work(di->chargalg_wq, &di->chargalg_work);
-}
-
-/**
- * abx500_chargalg_state_to() - Change charge state
- * @di: pointer to the abx500_chargalg structure
- *
- * This function gets called when a charge state change should occur
- */
-static void abx500_chargalg_state_to(struct abx500_chargalg *di,
- enum abx500_chargalg_states state)
-{
- dev_dbg(di->dev,
- "State changed: %s (From state: [%d] %s =to=> [%d] %s )\n",
- di->charge_state == state ? "NO" : "YES",
- di->charge_state,
- states[di->charge_state],
- state,
- states[state]);
-
- di->charge_state = state;
-}
-
-/**
- * abx500_chargalg_check_charger_connection() - Check charger connection change
- * @di: pointer to the abx500_chargalg structure
- *
- * This function will check if there is a change in the charger connection
- * and change charge state accordingly. AC has precedence over USB.
- */
-static int abx500_chargalg_check_charger_connection(struct abx500_chargalg *di)
-{
- if (di->chg_info.conn_chg != di->chg_info.prev_conn_chg ||
- di->susp_status.suspended_change) {
- /*
- * Charger state changed or suspension
- * has changed since last update
- */
- if ((di->chg_info.conn_chg & AC_CHG) &&
- !di->susp_status.ac_suspended) {
- dev_dbg(di->dev, "Charging source is AC\n");
- if (di->chg_info.charger_type != AC_CHG) {
- di->chg_info.charger_type = AC_CHG;
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- }
- } else if ((di->chg_info.conn_chg & USB_CHG) &&
- !di->susp_status.usb_suspended) {
- dev_dbg(di->dev, "Charging source is USB\n");
- di->chg_info.charger_type = USB_CHG;
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- } else if (di->chg_info.conn_chg &&
- (di->susp_status.ac_suspended ||
- di->susp_status.usb_suspended)) {
- dev_dbg(di->dev, "Charging is suspended\n");
- di->chg_info.charger_type = NO_CHG;
- abx500_chargalg_state_to(di, STATE_SUSPENDED_INIT);
- } else {
- dev_dbg(di->dev, "Charging source is OFF\n");
- di->chg_info.charger_type = NO_CHG;
- abx500_chargalg_state_to(di, STATE_HANDHELD_INIT);
- }
- di->chg_info.prev_conn_chg = di->chg_info.conn_chg;
- di->susp_status.suspended_change = false;
- }
- return di->chg_info.conn_chg;
-}
-
-/**
- * abx500_chargalg_start_safety_timer() - Start charging safety timer
- * @di: pointer to the abx500_chargalg structure
- *
- * The safety timer is used to avoid overcharging of old or bad batteries.
- * There are different timers for AC and USB
- */
-static void abx500_chargalg_start_safety_timer(struct abx500_chargalg *di)
-{
- unsigned long timer_expiration = 0;
-
- switch (di->chg_info.charger_type) {
- case AC_CHG:
- timer_expiration =
- round_jiffies(jiffies +
- (di->bat->main_safety_tmr_h * 3600 * HZ));
- break;
-
- case USB_CHG:
- timer_expiration =
- round_jiffies(jiffies +
- (di->bat->usb_safety_tmr_h * 3600 * HZ));
- break;
-
- default:
- dev_err(di->dev, "Unknown charger to charge from\n");
- break;
- }
-
- di->events.safety_timer_expired = false;
- di->safety_timer.expires = timer_expiration;
- if (!timer_pending(&di->safety_timer))
- add_timer(&di->safety_timer);
- else
- mod_timer(&di->safety_timer, timer_expiration);
-}
-
-/**
- * abx500_chargalg_stop_safety_timer() - Stop charging safety timer
- * @di: pointer to the abx500_chargalg structure
- *
- * The safety timer is stopped whenever the NORMAL state is exited
- */
-static void abx500_chargalg_stop_safety_timer(struct abx500_chargalg *di)
-{
- di->events.safety_timer_expired = false;
- del_timer(&di->safety_timer);
-}
-
-/**
- * abx500_chargalg_start_maintenance_timer() - Start charging maintenance timer
- * @di: pointer to the abx500_chargalg structure
- * @duration: duration of ther maintenance timer in hours
- *
- * The maintenance timer is used to maintain the charge in the battery once
- * the battery is considered full. These timers are chosen to match the
- * discharge curve of the battery
- */
-static void abx500_chargalg_start_maintenance_timer(struct abx500_chargalg *di,
- int duration)
-{
- unsigned long timer_expiration;
-
- /* Convert from hours to jiffies */
- timer_expiration = round_jiffies(jiffies + (duration * 3600 * HZ));
-
- di->events.maintenance_timer_expired = false;
- di->maintenance_timer.expires = timer_expiration;
- if (!timer_pending(&di->maintenance_timer))
- add_timer(&di->maintenance_timer);
- else
- mod_timer(&di->maintenance_timer, timer_expiration);
-}
-
-/**
- * abx500_chargalg_stop_maintenance_timer() - Stop maintenance timer
- * @di: pointer to the abx500_chargalg structure
- *
- * The maintenance timer is stopped whenever maintenance ends or when another
- * state is entered
- */
-static void abx500_chargalg_stop_maintenance_timer(struct abx500_chargalg *di)
-{
- di->events.maintenance_timer_expired = false;
- del_timer(&di->maintenance_timer);
-}
-
-/**
- * abx500_chargalg_kick_watchdog() - Kick charger watchdog
- * @di: pointer to the abx500_chargalg structure
- *
- * The charger watchdog have to be kicked periodically whenever the charger is
- * on, else the ABB will reset the system
- */
-static int abx500_chargalg_kick_watchdog(struct abx500_chargalg *di)
-{
- /* Check if charger exists and kick watchdog if charging */
- if (di->ac_chg && di->ac_chg->ops.kick_wd &&
- di->chg_info.online_chg & AC_CHG)
- return di->ac_chg->ops.kick_wd(di->ac_chg);
- else if (di->usb_chg && di->usb_chg->ops.kick_wd &&
- di->chg_info.online_chg & USB_CHG)
- return di->usb_chg->ops.kick_wd(di->usb_chg);
-
- return -ENXIO;
-}
-
-/**
- * abx500_chargalg_ac_en() - Turn on/off the AC charger
- * @di: pointer to the abx500_chargalg structure
- * @enable: charger on/off
- * @vset: requested charger output voltage
- * @iset: requested charger output current
- *
- * The AC charger will be turned on/off with the requested charge voltage and
- * current
- */
-static int abx500_chargalg_ac_en(struct abx500_chargalg *di, int enable,
- int vset, int iset)
-{
- if (!di->ac_chg || !di->ac_chg->ops.enable)
- return -ENXIO;
-
- /* Select maximum of what both the charger and the battery supports */
- if (di->ac_chg->max_out_volt)
- vset = min(vset, di->ac_chg->max_out_volt);
- if (di->ac_chg->max_out_curr)
- iset = min(iset, di->ac_chg->max_out_curr);
-
- di->chg_info.ac_iset = iset;
- di->chg_info.ac_vset = vset;
-
- return di->ac_chg->ops.enable(di->ac_chg, enable, vset, iset);
-}
-
-/**
- * abx500_chargalg_usb_en() - Turn on/off the USB charger
- * @di: pointer to the abx500_chargalg structure
- * @enable: charger on/off
- * @vset: requested charger output voltage
- * @iset: requested charger output current
- *
- * The USB charger will be turned on/off with the requested charge voltage and
- * current
- */
-static int abx500_chargalg_usb_en(struct abx500_chargalg *di, int enable,
- int vset, int iset)
-{
- if (!di->usb_chg || !di->usb_chg->ops.enable)
- return -ENXIO;
-
- /* Select maximum of what both the charger and the battery supports */
- if (di->usb_chg->max_out_volt)
- vset = min(vset, di->usb_chg->max_out_volt);
- if (di->usb_chg->max_out_curr)
- iset = min(iset, di->usb_chg->max_out_curr);
-
- di->chg_info.usb_iset = iset;
- di->chg_info.usb_vset = vset;
-
- return di->usb_chg->ops.enable(di->usb_chg, enable, vset, iset);
-}
-
-/**
- * abx500_chargalg_update_chg_curr() - Update charger current
- * @di: pointer to the abx500_chargalg structure
- * @iset: requested charger output current
- *
- * The charger output current will be updated for the charger
- * that is currently in use
- */
-static int abx500_chargalg_update_chg_curr(struct abx500_chargalg *di,
- int iset)
-{
- /* Check if charger exists and update current if charging */
- if (di->ac_chg && di->ac_chg->ops.update_curr &&
- di->chg_info.charger_type & AC_CHG) {
- /*
- * Select maximum of what both the charger
- * and the battery supports
- */
- if (di->ac_chg->max_out_curr)
- iset = min(iset, di->ac_chg->max_out_curr);
-
- di->chg_info.ac_iset = iset;
-
- return di->ac_chg->ops.update_curr(di->ac_chg, iset);
- } else if (di->usb_chg && di->usb_chg->ops.update_curr &&
- di->chg_info.charger_type & USB_CHG) {
- /*
- * Select maximum of what both the charger
- * and the battery supports
- */
- if (di->usb_chg->max_out_curr)
- iset = min(iset, di->usb_chg->max_out_curr);
-
- di->chg_info.usb_iset = iset;
-
- return di->usb_chg->ops.update_curr(di->usb_chg, iset);
- }
-
- return -ENXIO;
-}
-
-/**
- * abx500_chargalg_stop_charging() - Stop charging
- * @di: pointer to the abx500_chargalg structure
- *
- * This function is called from any state where charging should be stopped.
- * All charging is disabled and all status parameters and timers are changed
- * accordingly
- */
-static void abx500_chargalg_stop_charging(struct abx500_chargalg *di)
-{
- abx500_chargalg_ac_en(di, false, 0, 0);
- abx500_chargalg_usb_en(di, false, 0, 0);
- abx500_chargalg_stop_safety_timer(di);
- abx500_chargalg_stop_maintenance_timer(di);
- di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
- di->maintenance_chg = false;
- cancel_delayed_work(&di->chargalg_wd_work);
- power_supply_changed(&di->chargalg_psy);
-}
-
-/**
- * abx500_chargalg_hold_charging() - Pauses charging
- * @di: pointer to the abx500_chargalg structure
- *
- * This function is called in the case where maintenance charging has been
- * disabled and instead a battery voltage mode is entered to check when the
- * battery voltage has reached a certain recharge voltage
- */
-static void abx500_chargalg_hold_charging(struct abx500_chargalg *di)
-{
- abx500_chargalg_ac_en(di, false, 0, 0);
- abx500_chargalg_usb_en(di, false, 0, 0);
- abx500_chargalg_stop_safety_timer(di);
- abx500_chargalg_stop_maintenance_timer(di);
- di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
- di->maintenance_chg = false;
- cancel_delayed_work(&di->chargalg_wd_work);
- power_supply_changed(&di->chargalg_psy);
-}
-
-/**
- * abx500_chargalg_start_charging() - Start the charger
- * @di: pointer to the abx500_chargalg structure
- * @vset: requested charger output voltage
- * @iset: requested charger output current
- *
- * A charger will be enabled depending on the requested charger type that was
- * detected previously.
- */
-static void abx500_chargalg_start_charging(struct abx500_chargalg *di,
- int vset, int iset)
-{
- switch (di->chg_info.charger_type) {
- case AC_CHG:
- dev_dbg(di->dev,
- "AC parameters: Vset %d, Ich %d\n", vset, iset);
- abx500_chargalg_usb_en(di, false, 0, 0);
- abx500_chargalg_ac_en(di, true, vset, iset);
- break;
-
- case USB_CHG:
- dev_dbg(di->dev,
- "USB parameters: Vset %d, Ich %d\n", vset, iset);
- abx500_chargalg_ac_en(di, false, 0, 0);
- abx500_chargalg_usb_en(di, true, vset, iset);
- break;
-
- default:
- dev_err(di->dev, "Unknown charger to charge from\n");
- break;
- }
-}
-
-/**
- * abx500_chargalg_check_temp() - Check battery temperature ranges
- * @di: pointer to the abx500_chargalg structure
- *
- * The battery temperature is checked against the predefined limits and the
- * charge state is changed accordingly
- */
-static void abx500_chargalg_check_temp(struct abx500_chargalg *di)
-{
- if (di->batt_data.temp > (di->bat->temp_low + di->t_hyst_norm) &&
- di->batt_data.temp < (di->bat->temp_high - di->t_hyst_norm)) {
- /* Temp OK! */
- di->events.btemp_underover = false;
- di->events.btemp_lowhigh = false;
- di->t_hyst_norm = 0;
- di->t_hyst_lowhigh = 0;
- } else {
- if (((di->batt_data.temp >= di->bat->temp_high) &&
- (di->batt_data.temp <
- (di->bat->temp_over - di->t_hyst_lowhigh))) ||
- ((di->batt_data.temp >
- (di->bat->temp_under + di->t_hyst_lowhigh)) &&
- (di->batt_data.temp <= di->bat->temp_low))) {
- /* TEMP minor!!!!! */
- di->events.btemp_underover = false;
- di->events.btemp_lowhigh = true;
- di->t_hyst_norm = di->bat->temp_hysteresis;
- di->t_hyst_lowhigh = 0;
- } else if (di->batt_data.temp <= di->bat->temp_under ||
- di->batt_data.temp >= di->bat->temp_over) {
- /* TEMP major!!!!! */
- di->events.btemp_underover = true;
- di->events.btemp_lowhigh = false;
- di->t_hyst_norm = 0;
- di->t_hyst_lowhigh = di->bat->temp_hysteresis;
- } else {
- /* Within hysteresis */
- dev_dbg(di->dev, "Within hysteresis limit temp: %d "
- "hyst_lowhigh %d, hyst normal %d\n",
- di->batt_data.temp, di->t_hyst_lowhigh,
- di->t_hyst_norm);
- }
- }
-}
-
-/**
- * abx500_chargalg_check_charger_voltage() - Check charger voltage
- * @di: pointer to the abx500_chargalg structure
- *
- * Charger voltage is checked against maximum limit
- */
-static void abx500_chargalg_check_charger_voltage(struct abx500_chargalg *di)
-{
- if (di->chg_info.usb_volt > di->bat->chg_params->usb_volt_max)
- di->chg_info.usb_chg_ok = false;
- else
- di->chg_info.usb_chg_ok = true;
-
- if (di->chg_info.ac_volt > di->bat->chg_params->ac_volt_max)
- di->chg_info.ac_chg_ok = false;
- else
- di->chg_info.ac_chg_ok = true;
-
-}
-
-/**
- * abx500_chargalg_end_of_charge() - Check if end-of-charge criteria is fulfilled
- * @di: pointer to the abx500_chargalg structure
- *
- * End-of-charge criteria is fulfilled when the battery voltage is above a
- * certain limit and the battery current is below a certain limit for a
- * predefined number of consecutive seconds. If true, the battery is full
- */
-static void abx500_chargalg_end_of_charge(struct abx500_chargalg *di)
-{
- if (di->charge_status == POWER_SUPPLY_STATUS_CHARGING &&
- di->charge_state == STATE_NORMAL &&
- !di->maintenance_chg && (di->batt_data.volt >=
- di->bat->bat_type[di->bat->batt_id].termination_vol ||
- di->events.usb_cv_active || di->events.ac_cv_active) &&
- di->batt_data.avg_curr <
- di->bat->bat_type[di->bat->batt_id].termination_curr &&
- di->batt_data.avg_curr > 0) {
- if (++di->eoc_cnt >= EOC_COND_CNT) {
- di->eoc_cnt = 0;
- di->charge_status = POWER_SUPPLY_STATUS_FULL;
- di->maintenance_chg = true;
- dev_dbg(di->dev, "EOC reached!\n");
- power_supply_changed(&di->chargalg_psy);
- } else {
- dev_dbg(di->dev,
- " EOC limit reached for the %d"
- " time, out of %d before EOC\n",
- di->eoc_cnt,
- EOC_COND_CNT);
- }
- } else {
- di->eoc_cnt = 0;
- }
-}
-
-static void init_maxim_chg_curr(struct abx500_chargalg *di)
-{
- di->ccm.original_iset =
- di->bat->bat_type[di->bat->batt_id].normal_cur_lvl;
- di->ccm.current_iset =
- di->bat->bat_type[di->bat->batt_id].normal_cur_lvl;
- di->ccm.test_delta_i = di->bat->maxi->charger_curr_step;
- di->ccm.max_current = di->bat->maxi->chg_curr;
- di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
- di->ccm.level = 0;
-}
-
-/**
- * abx500_chargalg_chg_curr_maxim - increases the charger current to
- * compensate for the system load
- * @di pointer to the abx500_chargalg structure
- *
- * This maximization function is used to raise the charger current to get the
- * battery current as close to the optimal value as possible. The battery
- * current during charging is affected by the system load
- */
-static enum maxim_ret abx500_chargalg_chg_curr_maxim(struct abx500_chargalg *di)
-{
- int delta_i;
-
- if (!di->bat->maxi->ena_maxi)
- return MAXIM_RET_NOACTION;
-
- delta_i = di->ccm.original_iset - di->batt_data.inst_curr;
-
- if (di->events.vbus_collapsed) {
- dev_dbg(di->dev, "Charger voltage has collapsed %d\n",
- di->ccm.wait_cnt);
- if (di->ccm.wait_cnt == 0) {
- dev_dbg(di->dev, "lowering current\n");
- di->ccm.wait_cnt++;
- di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
- di->ccm.max_current =
- di->ccm.current_iset - di->ccm.test_delta_i;
- di->ccm.current_iset = di->ccm.max_current;
- di->ccm.level--;
- return MAXIM_RET_CHANGE;
- } else {
- dev_dbg(di->dev, "waiting\n");
- /* Let's go in here twice before lowering curr again */
- di->ccm.wait_cnt = (di->ccm.wait_cnt + 1) % 3;
- return MAXIM_RET_NOACTION;
- }
- }
-
- di->ccm.wait_cnt = 0;
-
- if ((di->batt_data.inst_curr > di->ccm.original_iset)) {
- dev_dbg(di->dev, " Maximization Ibat (%dmA) too high"
- " (limit %dmA) (current iset: %dmA)!\n",
- di->batt_data.inst_curr, di->ccm.original_iset,
- di->ccm.current_iset);
-
- if (di->ccm.current_iset == di->ccm.original_iset)
- return MAXIM_RET_NOACTION;
-
- di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
- di->ccm.current_iset = di->ccm.original_iset;
- di->ccm.level = 0;
-
- return MAXIM_RET_IBAT_TOO_HIGH;
- }
-
- if (delta_i > di->ccm.test_delta_i &&
- (di->ccm.current_iset + di->ccm.test_delta_i) <
- di->ccm.max_current) {
- if (di->ccm.condition_cnt-- == 0) {
- /* Increse the iset with cco.test_delta_i */
- di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
- di->ccm.current_iset += di->ccm.test_delta_i;
- di->ccm.level++;
- dev_dbg(di->dev, " Maximization needed, increase"
- " with %d mA to %dmA (Optimal ibat: %d)"
- " Level %d\n",
- di->ccm.test_delta_i,
- di->ccm.current_iset,
- di->ccm.original_iset,
- di->ccm.level);
- return MAXIM_RET_CHANGE;
- } else {
- return MAXIM_RET_NOACTION;
- }
- } else {
- di->ccm.condition_cnt = di->bat->maxi->wait_cycles;
- return MAXIM_RET_NOACTION;
- }
-}
-
-static void handle_maxim_chg_curr(struct abx500_chargalg *di)
-{
- enum maxim_ret ret;
- int result;
-
- ret = abx500_chargalg_chg_curr_maxim(di);
- switch (ret) {
- case MAXIM_RET_CHANGE:
- result = abx500_chargalg_update_chg_curr(di,
- di->ccm.current_iset);
- if (result)
- dev_err(di->dev, "failed to set chg curr\n");
- break;
- case MAXIM_RET_IBAT_TOO_HIGH:
- result = abx500_chargalg_update_chg_curr(di,
- di->bat->bat_type[di->bat->batt_id].normal_cur_lvl);
- if (result)
- dev_err(di->dev, "failed to set chg curr\n");
- break;
-
- case MAXIM_RET_NOACTION:
- default:
- /* Do nothing..*/
- break;
- }
-}
-
-static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
-{
- struct power_supply *psy;
- struct power_supply *ext;
- struct abx500_chargalg *di;
- union power_supply_propval ret;
- int i, j;
- bool psy_found = false;
-
- psy = (struct power_supply *)data;
- ext = dev_get_drvdata(dev);
- di = to_abx500_chargalg_device_info(psy);
- /* For all psy where the driver name appears in any supplied_to */
- for (i = 0; i < ext->num_supplicants; i++) {
- if (!strcmp(ext->supplied_to[i], psy->name))
- psy_found = true;
- }
- if (!psy_found)
- return 0;
-
- /* Go through all properties for the psy */
- for (j = 0; j < ext->num_properties; j++) {
- enum power_supply_property prop;
- prop = ext->properties[j];
-
- /* Initialize chargers if not already done */
- if (!di->ac_chg &&
- ext->type == POWER_SUPPLY_TYPE_MAINS)
- di->ac_chg = psy_to_ux500_charger(ext);
- else if (!di->usb_chg &&
- ext->type == POWER_SUPPLY_TYPE_USB)
- di->usb_chg = psy_to_ux500_charger(ext);
-
- if (ext->get_property(ext, prop, &ret))
- continue;
- switch (prop) {
- case POWER_SUPPLY_PROP_PRESENT:
- switch (ext->type) {
- case POWER_SUPPLY_TYPE_BATTERY:
- /* Battery present */
- if (ret.intval)
- di->events.batt_rem = false;
- /* Battery removed */
- else
- di->events.batt_rem = true;
- break;
- case POWER_SUPPLY_TYPE_MAINS:
- /* AC disconnected */
- if (!ret.intval &&
- (di->chg_info.conn_chg & AC_CHG)) {
- di->chg_info.prev_conn_chg =
- di->chg_info.conn_chg;
- di->chg_info.conn_chg &= ~AC_CHG;
- }
- /* AC connected */
- else if (ret.intval &&
- !(di->chg_info.conn_chg & AC_CHG)) {
- di->chg_info.prev_conn_chg =
- di->chg_info.conn_chg;
- di->chg_info.conn_chg |= AC_CHG;
- }
- break;
- case POWER_SUPPLY_TYPE_USB:
- /* USB disconnected */
- if (!ret.intval &&
- (di->chg_info.conn_chg & USB_CHG)) {
- di->chg_info.prev_conn_chg =
- di->chg_info.conn_chg;
- di->chg_info.conn_chg &= ~USB_CHG;
- }
- /* USB connected */
- else if (ret.intval &&
- !(di->chg_info.conn_chg & USB_CHG)) {
- di->chg_info.prev_conn_chg =
- di->chg_info.conn_chg;
- di->chg_info.conn_chg |= USB_CHG;
- }
- break;
- default:
- break;
- }
- break;
-
- case POWER_SUPPLY_PROP_ONLINE:
- switch (ext->type) {
- case POWER_SUPPLY_TYPE_BATTERY:
- break;
- case POWER_SUPPLY_TYPE_MAINS:
- /* AC offline */
- if (!ret.intval &&
- (di->chg_info.online_chg & AC_CHG)) {
- di->chg_info.prev_online_chg =
- di->chg_info.online_chg;
- di->chg_info.online_chg &= ~AC_CHG;
- }
- /* AC online */
- else if (ret.intval &&
- !(di->chg_info.online_chg & AC_CHG)) {
- di->chg_info.prev_online_chg =
- di->chg_info.online_chg;
- di->chg_info.online_chg |= AC_CHG;
- queue_delayed_work(di->chargalg_wq,
- &di->chargalg_wd_work, 0);
- }
- break;
- case POWER_SUPPLY_TYPE_USB:
- /* USB offline */
- if (!ret.intval &&
- (di->chg_info.online_chg & USB_CHG)) {
- di->chg_info.prev_online_chg =
- di->chg_info.online_chg;
- di->chg_info.online_chg &= ~USB_CHG;
- }
- /* USB online */
- else if (ret.intval &&
- !(di->chg_info.online_chg & USB_CHG)) {
- di->chg_info.prev_online_chg =
- di->chg_info.online_chg;
- di->chg_info.online_chg |= USB_CHG;
- queue_delayed_work(di->chargalg_wq,
- &di->chargalg_wd_work, 0);
- }
- break;
- default:
- break;
- }
- break;
-
- case POWER_SUPPLY_PROP_HEALTH:
- switch (ext->type) {
- case POWER_SUPPLY_TYPE_BATTERY:
- break;
- case POWER_SUPPLY_TYPE_MAINS:
- switch (ret.intval) {
- case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE:
- di->events.mainextchnotok = true;
- di->events.main_thermal_prot = false;
- di->events.main_ovv = false;
- di->events.ac_wd_expired = false;
- break;
- case POWER_SUPPLY_HEALTH_DEAD:
- di->events.ac_wd_expired = true;
- di->events.mainextchnotok = false;
- di->events.main_ovv = false;
- di->events.main_thermal_prot = false;
- break;
- case POWER_SUPPLY_HEALTH_COLD:
- case POWER_SUPPLY_HEALTH_OVERHEAT:
- di->events.main_thermal_prot = true;
- di->events.mainextchnotok = false;
- di->events.main_ovv = false;
- di->events.ac_wd_expired = false;
- break;
- case POWER_SUPPLY_HEALTH_OVERVOLTAGE:
- di->events.main_ovv = true;
- di->events.mainextchnotok = false;
- di->events.main_thermal_prot = false;
- di->events.ac_wd_expired = false;
- break;
- case POWER_SUPPLY_HEALTH_GOOD:
- di->events.main_thermal_prot = false;
- di->events.mainextchnotok = false;
- di->events.main_ovv = false;
- di->events.ac_wd_expired = false;
- break;
- default:
- break;
- }
- break;
-
- case POWER_SUPPLY_TYPE_USB:
- switch (ret.intval) {
- case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE:
- di->events.usbchargernotok = true;
- di->events.usb_thermal_prot = false;
- di->events.vbus_ovv = false;
- di->events.usb_wd_expired = false;
- break;
- case POWER_SUPPLY_HEALTH_DEAD:
- di->events.usb_wd_expired = true;
- di->events.usbchargernotok = false;
- di->events.usb_thermal_prot = false;
- di->events.vbus_ovv = false;
- break;
- case POWER_SUPPLY_HEALTH_COLD:
- case POWER_SUPPLY_HEALTH_OVERHEAT:
- di->events.usb_thermal_prot = true;
- di->events.usbchargernotok = false;
- di->events.vbus_ovv = false;
- di->events.usb_wd_expired = false;
- break;
- case POWER_SUPPLY_HEALTH_OVERVOLTAGE:
- di->events.vbus_ovv = true;
- di->events.usbchargernotok = false;
- di->events.usb_thermal_prot = false;
- di->events.usb_wd_expired = false;
- break;
- case POWER_SUPPLY_HEALTH_GOOD:
- di->events.usbchargernotok = false;
- di->events.usb_thermal_prot = false;
- di->events.vbus_ovv = false;
- di->events.usb_wd_expired = false;
- break;
- default:
- break;
- }
- default:
- break;
- }
- break;
-
- case POWER_SUPPLY_PROP_VOLTAGE_NOW:
- switch (ext->type) {
- case POWER_SUPPLY_TYPE_BATTERY:
- di->batt_data.volt = ret.intval / 1000;
- break;
- case POWER_SUPPLY_TYPE_MAINS:
- di->chg_info.ac_volt = ret.intval / 1000;
- break;
- case POWER_SUPPLY_TYPE_USB:
- di->chg_info.usb_volt = ret.intval / 1000;
- break;
- default:
- break;
- }
- break;
-
- case POWER_SUPPLY_PROP_VOLTAGE_AVG:
- switch (ext->type) {
- case POWER_SUPPLY_TYPE_MAINS:
- /* AVG is used to indicate when we are
- * in CV mode */
- if (ret.intval)
- di->events.ac_cv_active = true;
- else
- di->events.ac_cv_active = false;
-
- break;
- case POWER_SUPPLY_TYPE_USB:
- /* AVG is used to indicate when we are
- * in CV mode */
- if (ret.intval)
- di->events.usb_cv_active = true;
- else
- di->events.usb_cv_active = false;
-
- break;
- default:
- break;
- }
- break;
-
- case POWER_SUPPLY_PROP_TECHNOLOGY:
- switch (ext->type) {
- case POWER_SUPPLY_TYPE_BATTERY:
- if (ret.intval)
- di->events.batt_unknown = false;
- else
- di->events.batt_unknown = true;
-
- break;
- default:
- break;
- }
- break;
-
- case POWER_SUPPLY_PROP_TEMP:
- di->batt_data.temp = ret.intval / 10;
- break;
-
- case POWER_SUPPLY_PROP_CURRENT_NOW:
- switch (ext->type) {
- case POWER_SUPPLY_TYPE_MAINS:
- di->chg_info.ac_curr =
- ret.intval / 1000;
- break;
- case POWER_SUPPLY_TYPE_USB:
- di->chg_info.usb_curr =
- ret.intval / 1000;
- break;
- case POWER_SUPPLY_TYPE_BATTERY:
- di->batt_data.inst_curr = ret.intval / 1000;
- break;
- default:
- break;
- }
- break;
-
- case POWER_SUPPLY_PROP_CURRENT_AVG:
- switch (ext->type) {
- case POWER_SUPPLY_TYPE_BATTERY:
- di->batt_data.avg_curr = ret.intval / 1000;
- break;
- case POWER_SUPPLY_TYPE_USB:
- if (ret.intval)
- di->events.vbus_collapsed = true;
- else
- di->events.vbus_collapsed = false;
- break;
- default:
- break;
- }
- break;
- case POWER_SUPPLY_PROP_CAPACITY:
- di->batt_data.percent = ret.intval;
- break;
- default:
- break;
- }
- }
- return 0;
-}
-
-/**
- * abx500_chargalg_external_power_changed() - callback for power supply changes
- * @psy: pointer to the structure power_supply
- *
- * This function is the entry point of the pointer external_power_changed
- * of the structure power_supply.
- * This function gets executed when there is a change in any external power
- * supply that this driver needs to be notified of.
- */
-static void abx500_chargalg_external_power_changed(struct power_supply *psy)
-{
- struct abx500_chargalg *di = to_abx500_chargalg_device_info(psy);
-
- /*
- * Trigger execution of the algorithm instantly and read
- * all power_supply properties there instead
- */
- queue_work(di->chargalg_wq, &di->chargalg_work);
-}
-
-/**
- * abx500_chargalg_algorithm() - Main function for the algorithm
- * @di: pointer to the abx500_chargalg structure
- *
- * This is the main control function for the charging algorithm.
- * It is called periodically or when something happens that will
- * trigger a state change
- */
-static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
-{
- int charger_status;
-
- /* Collect data from all power_supply class devices */
- class_for_each_device(power_supply_class, NULL,
- &di->chargalg_psy, abx500_chargalg_get_ext_psy_data);
-
- abx500_chargalg_end_of_charge(di);
- abx500_chargalg_check_temp(di);
- abx500_chargalg_check_charger_voltage(di);
-
- charger_status = abx500_chargalg_check_charger_connection(di);
- /*
- * First check if we have a charger connected.
- * Also we don't allow charging of unknown batteries if configured
- * this way
- */
- if (!charger_status ||
- (di->events.batt_unknown && !di->bat->chg_unknown_bat)) {
- if (di->charge_state != STATE_HANDHELD) {
- di->events.safety_timer_expired = false;
- abx500_chargalg_state_to(di, STATE_HANDHELD_INIT);
- }
- }
-
- /* If suspended, we should not continue checking the flags */
- else if (di->charge_state == STATE_SUSPENDED_INIT ||
- di->charge_state == STATE_SUSPENDED) {
- /* We don't do anything here, just don,t continue */
- }
-
- /* Safety timer expiration */
- else if (di->events.safety_timer_expired) {
- if (di->charge_state != STATE_SAFETY_TIMER_EXPIRED)
- abx500_chargalg_state_to(di,
- STATE_SAFETY_TIMER_EXPIRED_INIT);
- }
- /*
- * Check if any interrupts has occured
- * that will prevent us from charging
- */
-
- /* Battery removed */
- else if (di->events.batt_rem) {
- if (di->charge_state != STATE_BATT_REMOVED)
- abx500_chargalg_state_to(di, STATE_BATT_REMOVED_INIT);
- }
- /* Main or USB charger not ok. */
- else if (di->events.mainextchnotok || di->events.usbchargernotok) {
- /*
- * If vbus_collapsed is set, we have to lower the charger
- * current, which is done in the normal state below
- */
- if (di->charge_state != STATE_CHG_NOT_OK &&
- !di->events.vbus_collapsed)
- abx500_chargalg_state_to(di, STATE_CHG_NOT_OK_INIT);
- }
- /* VBUS, Main or VBAT OVV. */
- else if (di->events.vbus_ovv ||
- di->events.main_ovv ||
- di->events.batt_ovv ||
- !di->chg_info.usb_chg_ok ||
- !di->chg_info.ac_chg_ok) {
- if (di->charge_state != STATE_OVV_PROTECT)
- abx500_chargalg_state_to(di, STATE_OVV_PROTECT_INIT);
- }
- /* USB Thermal, stop charging */
- else if (di->events.main_thermal_prot ||
- di->events.usb_thermal_prot) {
- if (di->charge_state != STATE_HW_TEMP_PROTECT)
- abx500_chargalg_state_to(di,
- STATE_HW_TEMP_PROTECT_INIT);
- }
- /* Battery temp over/under */
- else if (di->events.btemp_underover) {
- if (di->charge_state != STATE_TEMP_UNDEROVER)
- abx500_chargalg_state_to(di,
- STATE_TEMP_UNDEROVER_INIT);
- }
- /* Watchdog expired */
- else if (di->events.ac_wd_expired ||
- di->events.usb_wd_expired) {
- if (di->charge_state != STATE_WD_EXPIRED)
- abx500_chargalg_state_to(di, STATE_WD_EXPIRED_INIT);
- }
- /* Battery temp high/low */
- else if (di->events.btemp_lowhigh) {
- if (di->charge_state != STATE_TEMP_LOWHIGH)
- abx500_chargalg_state_to(di, STATE_TEMP_LOWHIGH_INIT);
- }
-
- dev_dbg(di->dev,
- "[CHARGALG] Vb %d Ib_avg %d Ib_inst %d Tb %d Cap %d Maint %d "
- "State %s Active_chg %d Chg_status %d AC %d USB %d "
- "AC_online %d USB_online %d AC_CV %d USB_CV %d AC_I %d "
- "USB_I %d AC_Vset %d AC_Iset %d USB_Vset %d USB_Iset %d\n",
- di->batt_data.volt,
- di->batt_data.avg_curr,
- di->batt_data.inst_curr,
- di->batt_data.temp,
- di->batt_data.percent,
- di->maintenance_chg,
- states[di->charge_state],
- di->chg_info.charger_type,
- di->charge_status,
- di->chg_info.conn_chg & AC_CHG,
- di->chg_info.conn_chg & USB_CHG,
- di->chg_info.online_chg & AC_CHG,
- di->chg_info.online_chg & USB_CHG,
- di->events.ac_cv_active,
- di->events.usb_cv_active,
- di->chg_info.ac_curr,
- di->chg_info.usb_curr,
- di->chg_info.ac_vset,
- di->chg_info.ac_iset,
- di->chg_info.usb_vset,
- di->chg_info.usb_iset);
-
- switch (di->charge_state) {
- case STATE_HANDHELD_INIT:
- abx500_chargalg_stop_charging(di);
- di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
- abx500_chargalg_state_to(di, STATE_HANDHELD);
- /* Intentional fallthrough */
-
- case STATE_HANDHELD:
- break;
-
- case STATE_SUSPENDED_INIT:
- if (di->susp_status.ac_suspended)
- abx500_chargalg_ac_en(di, false, 0, 0);
- if (di->susp_status.usb_suspended)
- abx500_chargalg_usb_en(di, false, 0, 0);
- abx500_chargalg_stop_safety_timer(di);
- abx500_chargalg_stop_maintenance_timer(di);
- di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
- di->maintenance_chg = false;
- abx500_chargalg_state_to(di, STATE_SUSPENDED);
- power_supply_changed(&di->chargalg_psy);
- /* Intentional fallthrough */
-
- case STATE_SUSPENDED:
- /* CHARGING is suspended */
- break;
-
- case STATE_BATT_REMOVED_INIT:
- abx500_chargalg_stop_charging(di);
- abx500_chargalg_state_to(di, STATE_BATT_REMOVED);
- /* Intentional fallthrough */
-
- case STATE_BATT_REMOVED:
- if (!di->events.batt_rem)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- break;
-
- case STATE_HW_TEMP_PROTECT_INIT:
- abx500_chargalg_stop_charging(di);
- abx500_chargalg_state_to(di, STATE_HW_TEMP_PROTECT);
- /* Intentional fallthrough */
-
- case STATE_HW_TEMP_PROTECT:
- if (!di->events.main_thermal_prot &&
- !di->events.usb_thermal_prot)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- break;
-
- case STATE_OVV_PROTECT_INIT:
- abx500_chargalg_stop_charging(di);
- abx500_chargalg_state_to(di, STATE_OVV_PROTECT);
- /* Intentional fallthrough */
-
- case STATE_OVV_PROTECT:
- if (!di->events.vbus_ovv &&
- !di->events.main_ovv &&
- !di->events.batt_ovv &&
- di->chg_info.usb_chg_ok &&
- di->chg_info.ac_chg_ok)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- break;
-
- case STATE_CHG_NOT_OK_INIT:
- abx500_chargalg_stop_charging(di);
- abx500_chargalg_state_to(di, STATE_CHG_NOT_OK);
- /* Intentional fallthrough */
-
- case STATE_CHG_NOT_OK:
- if (!di->events.mainextchnotok &&
- !di->events.usbchargernotok)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- break;
-
- case STATE_SAFETY_TIMER_EXPIRED_INIT:
- abx500_chargalg_stop_charging(di);
- abx500_chargalg_state_to(di, STATE_SAFETY_TIMER_EXPIRED);
- /* Intentional fallthrough */
-
- case STATE_SAFETY_TIMER_EXPIRED:
- /* We exit this state when charger is removed */
- break;
-
- case STATE_NORMAL_INIT:
- abx500_chargalg_start_charging(di,
- di->bat->bat_type[di->bat->batt_id].normal_vol_lvl,
- di->bat->bat_type[di->bat->batt_id].normal_cur_lvl);
- abx500_chargalg_state_to(di, STATE_NORMAL);
- abx500_chargalg_start_safety_timer(di);
- abx500_chargalg_stop_maintenance_timer(di);
- init_maxim_chg_curr(di);
- di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
- di->eoc_cnt = 0;
- di->maintenance_chg = false;
- power_supply_changed(&di->chargalg_psy);
-
- break;
-
- case STATE_NORMAL:
- handle_maxim_chg_curr(di);
- if (di->charge_status == POWER_SUPPLY_STATUS_FULL &&
- di->maintenance_chg) {
- if (di->bat->no_maintenance)
- abx500_chargalg_state_to(di,
- STATE_WAIT_FOR_RECHARGE_INIT);
- else
- abx500_chargalg_state_to(di,
- STATE_MAINTENANCE_A_INIT);
- }
- break;
-
- /* This state will be used when the maintenance state is disabled */
- case STATE_WAIT_FOR_RECHARGE_INIT:
- abx500_chargalg_hold_charging(di);
- abx500_chargalg_state_to(di, STATE_WAIT_FOR_RECHARGE);
- di->rch_cnt = RCH_COND_CNT;
- /* Intentional fallthrough */
-
- case STATE_WAIT_FOR_RECHARGE:
- if (di->batt_data.volt <=
- di->bat->bat_type[di->bat->batt_id].recharge_vol) {
- if (di->rch_cnt-- == 0)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- } else
- di->rch_cnt = RCH_COND_CNT;
- break;
-
- case STATE_MAINTENANCE_A_INIT:
- abx500_chargalg_stop_safety_timer(di);
- abx500_chargalg_start_maintenance_timer(di,
- di->bat->bat_type[
- di->bat->batt_id].maint_a_chg_timer_h);
- abx500_chargalg_start_charging(di,
- di->bat->bat_type[
- di->bat->batt_id].maint_a_vol_lvl,
- di->bat->bat_type[
- di->bat->batt_id].maint_a_cur_lvl);
- abx500_chargalg_state_to(di, STATE_MAINTENANCE_A);
- power_supply_changed(&di->chargalg_psy);
- /* Intentional fallthrough*/
-
- case STATE_MAINTENANCE_A:
- if (di->events.maintenance_timer_expired) {
- abx500_chargalg_stop_maintenance_timer(di);
- abx500_chargalg_state_to(di, STATE_MAINTENANCE_B_INIT);
- }
- break;
-
- case STATE_MAINTENANCE_B_INIT:
- abx500_chargalg_start_maintenance_timer(di,
- di->bat->bat_type[
- di->bat->batt_id].maint_b_chg_timer_h);
- abx500_chargalg_start_charging(di,
- di->bat->bat_type[
- di->bat->batt_id].maint_b_vol_lvl,
- di->bat->bat_type[
- di->bat->batt_id].maint_b_cur_lvl);
- abx500_chargalg_state_to(di, STATE_MAINTENANCE_B);
- power_supply_changed(&di->chargalg_psy);
- /* Intentional fallthrough*/
-
- case STATE_MAINTENANCE_B:
- if (di->events.maintenance_timer_expired) {
- abx500_chargalg_stop_maintenance_timer(di);
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- }
- break;
-
- case STATE_TEMP_LOWHIGH_INIT:
- abx500_chargalg_start_charging(di,
- di->bat->bat_type[
- di->bat->batt_id].low_high_vol_lvl,
- di->bat->bat_type[
- di->bat->batt_id].low_high_cur_lvl);
- abx500_chargalg_stop_maintenance_timer(di);
- di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
- abx500_chargalg_state_to(di, STATE_TEMP_LOWHIGH);
- power_supply_changed(&di->chargalg_psy);
- /* Intentional fallthrough */
-
- case STATE_TEMP_LOWHIGH:
- if (!di->events.btemp_lowhigh)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- break;
-
- case STATE_WD_EXPIRED_INIT:
- abx500_chargalg_stop_charging(di);
- abx500_chargalg_state_to(di, STATE_WD_EXPIRED);
- /* Intentional fallthrough */
-
- case STATE_WD_EXPIRED:
- if (!di->events.ac_wd_expired &&
- !di->events.usb_wd_expired)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- break;
-
- case STATE_TEMP_UNDEROVER_INIT:
- abx500_chargalg_stop_charging(di);
- abx500_chargalg_state_to(di, STATE_TEMP_UNDEROVER);
- /* Intentional fallthrough */
-
- case STATE_TEMP_UNDEROVER:
- if (!di->events.btemp_underover)
- abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
- break;
- }
-
- /* Start charging directly if the new state is a charge state */
- if (di->charge_state == STATE_NORMAL_INIT ||
- di->charge_state == STATE_MAINTENANCE_A_INIT ||
- di->charge_state == STATE_MAINTENANCE_B_INIT)
- queue_work(di->chargalg_wq, &di->chargalg_work);
-}
-
-/**
- * abx500_chargalg_periodic_work() - Periodic work for the algorithm
- * @work: pointer to the work_struct structure
- *
- * Work queue function for the charging algorithm
- */
-static void abx500_chargalg_periodic_work(struct work_struct *work)
-{
- struct abx500_chargalg *di = container_of(work,
- struct abx500_chargalg, chargalg_periodic_work.work);
-
- abx500_chargalg_algorithm(di);
-
- /*
- * If a charger is connected then the battery has to be monitored
- * frequently, else the work can be delayed.
- */
- if (di->chg_info.conn_chg)
- queue_delayed_work(di->chargalg_wq,
- &di->chargalg_periodic_work,
- di->bat->interval_charging * HZ);
- else
- queue_delayed_work(di->chargalg_wq,
- &di->chargalg_periodic_work,
- di->bat->interval_not_charging * HZ);
-}
-
-/**
- * abx500_chargalg_wd_work() - periodic work to kick the charger watchdog
- * @work: pointer to the work_struct structure
- *
- * Work queue function for kicking the charger watchdog
- */
-static void abx500_chargalg_wd_work(struct work_struct *work)
-{
- int ret;
- struct abx500_chargalg *di = container_of(work,
- struct abx500_chargalg, chargalg_wd_work.work);
-
- dev_dbg(di->dev, "abx500_chargalg_wd_work\n");
-
- ret = abx500_chargalg_kick_watchdog(di);
- if (ret < 0)
- dev_err(di->dev, "failed to kick watchdog\n");
-
- queue_delayed_work(di->chargalg_wq,
- &di->chargalg_wd_work, CHG_WD_INTERVAL);
-}
-
-/**
- * abx500_chargalg_work() - Work to run the charging algorithm instantly
- * @work: pointer to the work_struct structure
- *
- * Work queue function for calling the charging algorithm
- */
-static void abx500_chargalg_work(struct work_struct *work)
-{
- struct abx500_chargalg *di = container_of(work,
- struct abx500_chargalg, chargalg_work);
-
- abx500_chargalg_algorithm(di);
-}
-
-/**
- * abx500_chargalg_get_property() - get the chargalg properties
- * @psy: pointer to the power_supply structure
- * @psp: pointer to the power_supply_property structure
- * @val: pointer to the power_supply_propval union
- *
- * This function gets called when an application tries to get the
- * chargalg properties by reading the sysfs files.
- * status: charging/discharging/full/unknown
- * health: health of the battery
- * Returns error code in case of failure else 0 on success
- */
-static int abx500_chargalg_get_property(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
-{
- struct abx500_chargalg *di;
-
- di = to_abx500_chargalg_device_info(psy);
-
- switch (psp) {
- case POWER_SUPPLY_PROP_STATUS:
- val->intval = di->charge_status;
- break;
- case POWER_SUPPLY_PROP_HEALTH:
- if (di->events.batt_ovv) {
- val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
- } else if (di->events.btemp_underover) {
- if (di->batt_data.temp <= di->bat->temp_under)
- val->intval = POWER_SUPPLY_HEALTH_COLD;
- else
- val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
- } else {
- val->intval = POWER_SUPPLY_HEALTH_GOOD;
- }
- break;
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-/* Exposure to the sysfs interface */
-
-/**
- * abx500_chargalg_sysfs_charger() - sysfs store operations
- * @kobj: pointer to the struct kobject
- * @attr: pointer to the struct attribute
- * @buf: buffer that holds the parameter passed from userspace
- * @length: length of the parameter passed
- *
- * Returns length of the buffer(input taken from user space) on success
- * else error code on failure
- * The operation to be performed on passing the parameters from the user space.
- */
-static ssize_t abx500_chargalg_sysfs_charger(struct kobject *kobj,
- struct attribute *attr, const char *buf, size_t length)
-{
- struct abx500_chargalg *di = container_of(kobj,
- struct abx500_chargalg, chargalg_kobject);
- long int param;
- int ac_usb;
- int ret;
- char entry = *attr->name;
-
- switch (entry) {
- case 'c':
- ret = strict_strtol(buf, 10, &param);
- if (ret < 0)
- return ret;
-
- ac_usb = param;
- switch (ac_usb) {
- case 0:
- /* Disable charging */
- di->susp_status.ac_suspended = true;
- di->susp_status.usb_suspended = true;
- di->susp_status.suspended_change = true;
- /* Trigger a state change */
- queue_work(di->chargalg_wq,
- &di->chargalg_work);
- break;
- case 1:
- /* Enable AC Charging */
- di->susp_status.ac_suspended = false;
- di->susp_status.suspended_change = true;
- /* Trigger a state change */
- queue_work(di->chargalg_wq,
- &di->chargalg_work);
- break;
- case 2:
- /* Enable USB charging */
- di->susp_status.usb_suspended = false;
- di->susp_status.suspended_change = true;
- /* Trigger a state change */
- queue_work(di->chargalg_wq,
- &di->chargalg_work);
- break;
- default:
- dev_info(di->dev, "Wrong input\n"
- "Enter 0. Disable AC/USB Charging\n"
- "1. Enable AC charging\n"
- "2. Enable USB Charging\n");
- };
- break;
- };
- return strlen(buf);
-}
-
-static struct attribute abx500_chargalg_en_charger = \
-{
- .name = "chargalg",
- .mode = S_IWUGO,
-};
-
-static struct attribute *abx500_chargalg_chg[] = {
- &abx500_chargalg_en_charger,
- NULL
-};
-
-static const struct sysfs_ops abx500_chargalg_sysfs_ops = {
- .store = abx500_chargalg_sysfs_charger,
-};
-
-static struct kobj_type abx500_chargalg_ktype = {
- .sysfs_ops = &abx500_chargalg_sysfs_ops,
- .default_attrs = abx500_chargalg_chg,
-};
-
-/**
- * abx500_chargalg_sysfs_exit() - de-init of sysfs entry
- * @di: pointer to the struct abx500_chargalg
- *
- * This function removes the entry in sysfs.
- */
-static void abx500_chargalg_sysfs_exit(struct abx500_chargalg *di)
-{
- kobject_del(&di->chargalg_kobject);
-}
-
-/**
- * abx500_chargalg_sysfs_init() - init of sysfs entry
- * @di: pointer to the struct abx500_chargalg
- *
- * This function adds an entry in sysfs.
- * Returns error code in case of failure else 0(on success)
- */
-static int abx500_chargalg_sysfs_init(struct abx500_chargalg *di)
-{
- int ret = 0;
-
- ret = kobject_init_and_add(&di->chargalg_kobject,
- &abx500_chargalg_ktype,
- NULL, "abx500_chargalg");
- if (ret < 0)
- dev_err(di->dev, "failed to create sysfs entry\n");
-
- return ret;
-}
-/* Exposure to the sysfs interface <<END>> */
-
-#if defined(CONFIG_PM)
-static int abx500_chargalg_resume(struct platform_device *pdev)
-{
- struct abx500_chargalg *di = platform_get_drvdata(pdev);
-
- /* Kick charger watchdog if charging (any charger online) */
- if (di->chg_info.online_chg)
- queue_delayed_work(di->chargalg_wq, &di->chargalg_wd_work, 0);
-
- /*
- * Run the charging algorithm directly to be sure we don't
- * do it too seldom
- */
- queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0);
-
- return 0;
-}
-
-static int abx500_chargalg_suspend(struct platform_device *pdev,
- pm_message_t state)
-{
- struct abx500_chargalg *di = platform_get_drvdata(pdev);
-
- if (di->chg_info.online_chg)
- cancel_delayed_work_sync(&di->chargalg_wd_work);
-
- cancel_delayed_work_sync(&di->chargalg_periodic_work);
-
- return 0;
-}
-#else
-#define abx500_chargalg_suspend NULL
-#define abx500_chargalg_resume NULL
-#endif
-
-static int __devexit abx500_chargalg_remove(struct platform_device *pdev)
-{
- struct abx500_chargalg *di = platform_get_drvdata(pdev);
-
- /* sysfs interface to enable/disbale charging from user space */
- abx500_chargalg_sysfs_exit(di);
-
- /* Delete the work queue */
- destroy_workqueue(di->chargalg_wq);
-
- flush_scheduled_work();
- power_supply_unregister(&di->chargalg_psy);
- platform_set_drvdata(pdev, NULL);
- kfree(di);
-
- return 0;
-}
-
-static int __devinit abx500_chargalg_probe(struct platform_device *pdev)
-{
- struct abx500_bm_plat_data *plat_data;
- int ret = 0;
-
- struct abx500_chargalg *di =
- kzalloc(sizeof(struct abx500_chargalg), GFP_KERNEL);
- if (!di)
- return -ENOMEM;
-
- /* get device struct */
- di->dev = &pdev->dev;
-
- plat_data = pdev->dev.platform_data;
- di->pdata = plat_data->chargalg;
- di->bat = plat_data->battery;
-
- /* chargalg supply */
- di->chargalg_psy.name = "abx500_chargalg";
- di->chargalg_psy.type = POWER_SUPPLY_TYPE_BATTERY;
- di->chargalg_psy.properties = abx500_chargalg_props;
- di->chargalg_psy.num_properties = ARRAY_SIZE(abx500_chargalg_props);
- di->chargalg_psy.get_property = abx500_chargalg_get_property;
- di->chargalg_psy.supplied_to = di->pdata->supplied_to;
- di->chargalg_psy.num_supplicants = di->pdata->num_supplicants;
- di->chargalg_psy.external_power_changed =
- abx500_chargalg_external_power_changed;
-
- /* Initilialize safety timer */
- init_timer(&di->safety_timer);
- di->safety_timer.function = abx500_chargalg_safety_timer_expired;
- di->safety_timer.data = (unsigned long) di;
-
- /* Initilialize maintenance timer */
- init_timer(&di->maintenance_timer);
- di->maintenance_timer.function =
- abx500_chargalg_maintenance_timer_expired;
- di->maintenance_timer.data = (unsigned long) di;
-
- /* Create a work queue for the chargalg */
- di->chargalg_wq =
- create_singlethread_workqueue("abx500_chargalg_wq");
- if (di->chargalg_wq == NULL) {
- dev_err(di->dev, "failed to create work queue\n");
- goto free_device_info;
- }
-
- /* Init work for chargalg */
- INIT_DELAYED_WORK_DEFERRABLE(&di->chargalg_periodic_work,
- abx500_chargalg_periodic_work);
- INIT_DELAYED_WORK_DEFERRABLE(&di->chargalg_wd_work,
- abx500_chargalg_wd_work);
-
- /* Init work for chargalg */
- INIT_WORK(&di->chargalg_work, abx500_chargalg_work);
-
- /* To detect charger at startup */
- di->chg_info.prev_conn_chg = -1;
-
- /* Register chargalg power supply class */
- ret = power_supply_register(di->dev, &di->chargalg_psy);
- if (ret) {
- dev_err(di->dev, "failed to register chargalg psy\n");
- goto free_chargalg_wq;
- }
-
- platform_set_drvdata(pdev, di);
-
- /* sysfs interface to enable/disable charging from user space */
- ret = abx500_chargalg_sysfs_init(di);
- if (ret) {
- dev_err(di->dev, "failed to create sysfs entry\n");
- goto free_psy;
- }
-
- /* Run the charging algorithm */
- queue_delayed_work(di->chargalg_wq, &di->chargalg_periodic_work, 0);
-
- dev_info(di->dev, "probe success\n");
- return ret;
-
-free_psy:
- power_supply_unregister(&di->chargalg_psy);
-free_chargalg_wq:
- destroy_workqueue(di->chargalg_wq);
-free_device_info:
- kfree(di);
-
- return ret;
-}
-
-static struct platform_driver abx500_chargalg_driver = {
- .probe = abx500_chargalg_probe,
- .remove = __devexit_p(abx500_chargalg_remove),
- .suspend = abx500_chargalg_suspend,
- .resume = abx500_chargalg_resume,
- .driver = {
- .name = "abx500-chargalg",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init abx500_chargalg_init(void)
-{
- return platform_driver_register(&abx500_chargalg_driver);
-}
-
-static void __exit abx500_chargalg_exit(void)
-{
- platform_driver_unregister(&abx500_chargalg_driver);
-}
-
-module_init(abx500_chargalg_init);
-module_exit(abx500_chargalg_exit);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Johan Palsson, Karl Komierowski");
-MODULE_ALIAS("platform:abx500-chargalg");
-MODULE_DESCRIPTION("abx500 battery charging algorithm");