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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/charger-manager.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/charger-manager.c')
-rw-r--r--ANDROID_3.4.5/drivers/power/charger-manager.c1063
1 files changed, 0 insertions, 1063 deletions
diff --git a/ANDROID_3.4.5/drivers/power/charger-manager.c b/ANDROID_3.4.5/drivers/power/charger-manager.c
deleted file mode 100644
index 9eca9f1f..00000000
--- a/ANDROID_3.4.5/drivers/power/charger-manager.c
+++ /dev/null
@@ -1,1063 +0,0 @@
-/*
- * Copyright (C) 2011 Samsung Electronics Co., Ltd.
- * MyungJoo Ham <myungjoo.ham@samsung.com>
- *
- * This driver enables to monitor battery health and control charger
- * during suspend-to-mem.
- * Charger manager depends on other devices. register this later than
- * the depending devices.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-**/
-
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/rtc.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h>
-#include <linux/platform_device.h>
-#include <linux/power/charger-manager.h>
-#include <linux/regulator/consumer.h>
-
-/*
- * Regard CM_JIFFIES_SMALL jiffies is small enough to ignore for
- * delayed works so that we can run delayed works with CM_JIFFIES_SMALL
- * without any delays.
- */
-#define CM_JIFFIES_SMALL (2)
-
-/* If y is valid (> 0) and smaller than x, do x = y */
-#define CM_MIN_VALID(x, y) x = (((y > 0) && ((x) > (y))) ? (y) : (x))
-
-/*
- * Regard CM_RTC_SMALL (sec) is small enough to ignore error in invoking
- * rtc alarm. It should be 2 or larger
- */
-#define CM_RTC_SMALL (2)
-
-#define UEVENT_BUF_SIZE 32
-
-static LIST_HEAD(cm_list);
-static DEFINE_MUTEX(cm_list_mtx);
-
-/* About in-suspend (suspend-again) monitoring */
-static struct rtc_device *rtc_dev;
-/*
- * Backup RTC alarm
- * Save the wakeup alarm before entering suspend-to-RAM
- */
-static struct rtc_wkalrm rtc_wkalarm_save;
-/* Backup RTC alarm time in terms of seconds since 01-01-1970 00:00:00 */
-static unsigned long rtc_wkalarm_save_time;
-static bool cm_suspended;
-static bool cm_rtc_set;
-static unsigned long cm_suspend_duration_ms;
-
-/* Global charger-manager description */
-static struct charger_global_desc *g_desc; /* init with setup_charger_manager */
-
-/**
- * is_batt_present - See if the battery presents in place.
- * @cm: the Charger Manager representing the battery.
- */
-static bool is_batt_present(struct charger_manager *cm)
-{
- union power_supply_propval val;
- bool present = false;
- int i, ret;
-
- switch (cm->desc->battery_present) {
- case CM_FUEL_GAUGE:
- ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_PRESENT, &val);
- if (ret == 0 && val.intval)
- present = true;
- break;
- case CM_CHARGER_STAT:
- for (i = 0; cm->charger_stat[i]; i++) {
- ret = cm->charger_stat[i]->get_property(
- cm->charger_stat[i],
- POWER_SUPPLY_PROP_PRESENT, &val);
- if (ret == 0 && val.intval) {
- present = true;
- break;
- }
- }
- break;
- }
-
- return present;
-}
-
-/**
- * is_ext_pwr_online - See if an external power source is attached to charge
- * @cm: the Charger Manager representing the battery.
- *
- * Returns true if at least one of the chargers of the battery has an external
- * power source attached to charge the battery regardless of whether it is
- * actually charging or not.
- */
-static bool is_ext_pwr_online(struct charger_manager *cm)
-{
- union power_supply_propval val;
- bool online = false;
- int i, ret;
-
- /* If at least one of them has one, it's yes. */
- for (i = 0; cm->charger_stat[i]; i++) {
- ret = cm->charger_stat[i]->get_property(
- cm->charger_stat[i],
- POWER_SUPPLY_PROP_ONLINE, &val);
- if (ret == 0 && val.intval) {
- online = true;
- break;
- }
- }
-
- return online;
-}
-
-/**
- * get_batt_uV - Get the voltage level of the battery
- * @cm: the Charger Manager representing the battery.
- * @uV: the voltage level returned.
- *
- * Returns 0 if there is no error.
- * Returns a negative value on error.
- */
-static int get_batt_uV(struct charger_manager *cm, int *uV)
-{
- union power_supply_propval val;
- int ret;
-
- if (!cm->fuel_gauge)
- return -ENODEV;
-
- ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_VOLTAGE_NOW, &val);
- if (ret)
- return ret;
-
- *uV = val.intval;
- return 0;
-}
-
-/**
- * is_charging - Returns true if the battery is being charged.
- * @cm: the Charger Manager representing the battery.
- */
-static bool is_charging(struct charger_manager *cm)
-{
- int i, ret;
- bool charging = false;
- union power_supply_propval val;
-
- /* If there is no battery, it cannot be charged */
- if (!is_batt_present(cm))
- return false;
-
- /* If at least one of the charger is charging, return yes */
- for (i = 0; cm->charger_stat[i]; i++) {
- /* 1. The charger sholuld not be DISABLED */
- if (cm->emergency_stop)
- continue;
- if (!cm->charger_enabled)
- continue;
-
- /* 2. The charger should be online (ext-power) */
- ret = cm->charger_stat[i]->get_property(
- cm->charger_stat[i],
- POWER_SUPPLY_PROP_ONLINE, &val);
- if (ret) {
- dev_warn(cm->dev, "Cannot read ONLINE value from %s.\n",
- cm->desc->psy_charger_stat[i]);
- continue;
- }
- if (val.intval == 0)
- continue;
-
- /*
- * 3. The charger should not be FULL, DISCHARGING,
- * or NOT_CHARGING.
- */
- ret = cm->charger_stat[i]->get_property(
- cm->charger_stat[i],
- POWER_SUPPLY_PROP_STATUS, &val);
- if (ret) {
- dev_warn(cm->dev, "Cannot read STATUS value from %s.\n",
- cm->desc->psy_charger_stat[i]);
- continue;
- }
- if (val.intval == POWER_SUPPLY_STATUS_FULL ||
- val.intval == POWER_SUPPLY_STATUS_DISCHARGING ||
- val.intval == POWER_SUPPLY_STATUS_NOT_CHARGING)
- continue;
-
- /* Then, this is charging. */
- charging = true;
- break;
- }
-
- return charging;
-}
-
-/**
- * is_polling_required - Return true if need to continue polling for this CM.
- * @cm: the Charger Manager representing the battery.
- */
-static bool is_polling_required(struct charger_manager *cm)
-{
- switch (cm->desc->polling_mode) {
- case CM_POLL_DISABLE:
- return false;
- case CM_POLL_ALWAYS:
- return true;
- case CM_POLL_EXTERNAL_POWER_ONLY:
- return is_ext_pwr_online(cm);
- case CM_POLL_CHARGING_ONLY:
- return is_charging(cm);
- default:
- dev_warn(cm->dev, "Incorrect polling_mode (%d)\n",
- cm->desc->polling_mode);
- }
-
- return false;
-}
-
-/**
- * try_charger_enable - Enable/Disable chargers altogether
- * @cm: the Charger Manager representing the battery.
- * @enable: true: enable / false: disable
- *
- * Note that Charger Manager keeps the charger enabled regardless whether
- * the charger is charging or not (because battery is full or no external
- * power source exists) except when CM needs to disable chargers forcibly
- * bacause of emergency causes; when the battery is overheated or too cold.
- */
-static int try_charger_enable(struct charger_manager *cm, bool enable)
-{
- int err = 0, i;
- struct charger_desc *desc = cm->desc;
-
- /* Ignore if it's redundent command */
- if (enable == cm->charger_enabled)
- return 0;
-
- if (enable) {
- if (cm->emergency_stop)
- return -EAGAIN;
- err = regulator_bulk_enable(desc->num_charger_regulators,
- desc->charger_regulators);
- } else {
- /*
- * Abnormal battery state - Stop charging forcibly,
- * even if charger was enabled at the other places
- */
- err = regulator_bulk_disable(desc->num_charger_regulators,
- desc->charger_regulators);
-
- for (i = 0; i < desc->num_charger_regulators; i++) {
- if (regulator_is_enabled(
- desc->charger_regulators[i].consumer)) {
- regulator_force_disable(
- desc->charger_regulators[i].consumer);
- dev_warn(cm->dev,
- "Disable regulator(%s) forcibly.\n",
- desc->charger_regulators[i].supply);
- }
- }
- }
-
- if (!err)
- cm->charger_enabled = enable;
-
- return err;
-}
-
-/**
- * uevent_notify - Let users know something has changed.
- * @cm: the Charger Manager representing the battery.
- * @event: the event string.
- *
- * If @event is null, it implies that uevent_notify is called
- * by resume function. When called in the resume function, cm_suspended
- * should be already reset to false in order to let uevent_notify
- * notify the recent event during the suspend to users. While
- * suspended, uevent_notify does not notify users, but tracks
- * events so that uevent_notify can notify users later after resumed.
- */
-static void uevent_notify(struct charger_manager *cm, const char *event)
-{
- static char env_str[UEVENT_BUF_SIZE + 1] = "";
- static char env_str_save[UEVENT_BUF_SIZE + 1] = "";
-
- if (cm_suspended) {
- /* Nothing in suspended-event buffer */
- if (env_str_save[0] == 0) {
- if (!strncmp(env_str, event, UEVENT_BUF_SIZE))
- return; /* status not changed */
- strncpy(env_str_save, event, UEVENT_BUF_SIZE);
- return;
- }
-
- if (!strncmp(env_str_save, event, UEVENT_BUF_SIZE))
- return; /* Duplicated. */
- strncpy(env_str_save, event, UEVENT_BUF_SIZE);
- return;
- }
-
- if (event == NULL) {
- /* No messages pending */
- if (!env_str_save[0])
- return;
-
- strncpy(env_str, env_str_save, UEVENT_BUF_SIZE);
- kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
- env_str_save[0] = 0;
-
- return;
- }
-
- /* status not changed */
- if (!strncmp(env_str, event, UEVENT_BUF_SIZE))
- return;
-
- /* save the status and notify the update */
- strncpy(env_str, event, UEVENT_BUF_SIZE);
- kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
-
- dev_info(cm->dev, event);
-}
-
-/**
- * _cm_monitor - Monitor the temperature and return true for exceptions.
- * @cm: the Charger Manager representing the battery.
- *
- * Returns true if there is an event to notify for the battery.
- * (True if the status of "emergency_stop" changes)
- */
-static bool _cm_monitor(struct charger_manager *cm)
-{
- struct charger_desc *desc = cm->desc;
- int temp = desc->temperature_out_of_range(&cm->last_temp_mC);
-
- dev_dbg(cm->dev, "monitoring (%2.2d.%3.3dC)\n",
- cm->last_temp_mC / 1000, cm->last_temp_mC % 1000);
-
- /* It has been stopped or charging already */
- if (!!temp == !!cm->emergency_stop)
- return false;
-
- if (temp) {
- cm->emergency_stop = temp;
- if (!try_charger_enable(cm, false)) {
- if (temp > 0)
- uevent_notify(cm, "OVERHEAT");
- else
- uevent_notify(cm, "COLD");
- }
- } else {
- cm->emergency_stop = 0;
- if (!try_charger_enable(cm, true))
- uevent_notify(cm, "CHARGING");
- }
-
- return true;
-}
-
-/**
- * cm_monitor - Monitor every battery.
- *
- * Returns true if there is an event to notify from any of the batteries.
- * (True if the status of "emergency_stop" changes)
- */
-static bool cm_monitor(void)
-{
- bool stop = false;
- struct charger_manager *cm;
-
- mutex_lock(&cm_list_mtx);
-
- list_for_each_entry(cm, &cm_list, entry) {
- if (_cm_monitor(cm))
- stop = true;
- }
-
- mutex_unlock(&cm_list_mtx);
-
- return stop;
-}
-
-static int charger_get_property(struct power_supply *psy,
- enum power_supply_property psp,
- union power_supply_propval *val)
-{
- struct charger_manager *cm = container_of(psy,
- struct charger_manager, charger_psy);
- struct charger_desc *desc = cm->desc;
- int ret = 0;
- int uV;
-
- switch (psp) {
- case POWER_SUPPLY_PROP_STATUS:
- if (is_charging(cm))
- val->intval = POWER_SUPPLY_STATUS_CHARGING;
- else if (is_ext_pwr_online(cm))
- val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
- else
- val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
- break;
- case POWER_SUPPLY_PROP_HEALTH:
- if (cm->emergency_stop > 0)
- val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
- else if (cm->emergency_stop < 0)
- val->intval = POWER_SUPPLY_HEALTH_COLD;
- else
- val->intval = POWER_SUPPLY_HEALTH_GOOD;
- break;
- case POWER_SUPPLY_PROP_PRESENT:
- if (is_batt_present(cm))
- val->intval = 1;
- else
- val->intval = 0;
- break;
- case POWER_SUPPLY_PROP_VOLTAGE_NOW:
- ret = get_batt_uV(cm, &val->intval);
- break;
- case POWER_SUPPLY_PROP_CURRENT_NOW:
- ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_CURRENT_NOW, val);
- break;
- case POWER_SUPPLY_PROP_TEMP:
- /* in thenth of centigrade */
- if (cm->last_temp_mC == INT_MIN)
- desc->temperature_out_of_range(&cm->last_temp_mC);
- val->intval = cm->last_temp_mC / 100;
- if (!desc->measure_battery_temp)
- ret = -ENODEV;
- break;
- case POWER_SUPPLY_PROP_TEMP_AMBIENT:
- /* in thenth of centigrade */
- if (cm->last_temp_mC == INT_MIN)
- desc->temperature_out_of_range(&cm->last_temp_mC);
- val->intval = cm->last_temp_mC / 100;
- if (desc->measure_battery_temp)
- ret = -ENODEV;
- break;
- case POWER_SUPPLY_PROP_CAPACITY:
- if (!cm->fuel_gauge) {
- ret = -ENODEV;
- break;
- }
-
- if (!is_batt_present(cm)) {
- /* There is no battery. Assume 100% */
- val->intval = 100;
- break;
- }
-
- ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_CAPACITY, val);
- if (ret)
- break;
-
- if (val->intval > 100) {
- val->intval = 100;
- break;
- }
- if (val->intval < 0)
- val->intval = 0;
-
- /* Do not adjust SOC when charging: voltage is overrated */
- if (is_charging(cm))
- break;
-
- /*
- * If the capacity value is inconsistent, calibrate it base on
- * the battery voltage values and the thresholds given as desc
- */
- ret = get_batt_uV(cm, &uV);
- if (ret) {
- /* Voltage information not available. No calibration */
- ret = 0;
- break;
- }
-
- if (desc->fullbatt_uV > 0 && uV >= desc->fullbatt_uV &&
- !is_charging(cm)) {
- val->intval = 100;
- break;
- }
-
- break;
- case POWER_SUPPLY_PROP_ONLINE:
- if (is_ext_pwr_online(cm))
- val->intval = 1;
- else
- val->intval = 0;
- break;
- case POWER_SUPPLY_PROP_CHARGE_FULL:
- if (cm->fuel_gauge) {
- if (cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_CHARGE_FULL, val) == 0)
- break;
- }
-
- if (is_ext_pwr_online(cm)) {
- /* Not full if it's charging. */
- if (is_charging(cm)) {
- val->intval = 0;
- break;
- }
- /*
- * Full if it's powered but not charging andi
- * not forced stop by emergency
- */
- if (!cm->emergency_stop) {
- val->intval = 1;
- break;
- }
- }
-
- /* Full if it's over the fullbatt voltage */
- ret = get_batt_uV(cm, &uV);
- if (!ret && desc->fullbatt_uV > 0 && uV >= desc->fullbatt_uV &&
- !is_charging(cm)) {
- val->intval = 1;
- break;
- }
-
- /* Full if the cap is 100 */
- if (cm->fuel_gauge) {
- ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_CAPACITY, val);
- if (!ret && val->intval >= 100 && !is_charging(cm)) {
- val->intval = 1;
- break;
- }
- }
-
- val->intval = 0;
- ret = 0;
- break;
- case POWER_SUPPLY_PROP_CHARGE_NOW:
- if (is_charging(cm)) {
- ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_CHARGE_NOW,
- val);
- if (ret) {
- val->intval = 1;
- ret = 0;
- } else {
- /* If CHARGE_NOW is supplied, use it */
- val->intval = (val->intval > 0) ?
- val->intval : 1;
- }
- } else {
- val->intval = 0;
- }
- break;
- default:
- return -EINVAL;
- }
- return ret;
-}
-
-#define NUM_CHARGER_PSY_OPTIONAL (4)
-static enum power_supply_property default_charger_props[] = {
- /* Guaranteed to provide */
- POWER_SUPPLY_PROP_STATUS,
- POWER_SUPPLY_PROP_HEALTH,
- POWER_SUPPLY_PROP_PRESENT,
- POWER_SUPPLY_PROP_VOLTAGE_NOW,
- POWER_SUPPLY_PROP_CAPACITY,
- POWER_SUPPLY_PROP_ONLINE,
- POWER_SUPPLY_PROP_CHARGE_FULL,
- /*
- * Optional properties are:
- * POWER_SUPPLY_PROP_CHARGE_NOW,
- * POWER_SUPPLY_PROP_CURRENT_NOW,
- * POWER_SUPPLY_PROP_TEMP, and
- * POWER_SUPPLY_PROP_TEMP_AMBIENT,
- */
-};
-
-static struct power_supply psy_default = {
- .name = "battery",
- .type = POWER_SUPPLY_TYPE_BATTERY,
- .properties = default_charger_props,
- .num_properties = ARRAY_SIZE(default_charger_props),
- .get_property = charger_get_property,
-};
-
-/**
- * cm_setup_timer - For in-suspend monitoring setup wakeup alarm
- * for suspend_again.
- *
- * Returns true if the alarm is set for Charger Manager to use.
- * Returns false if
- * cm_setup_timer fails to set an alarm,
- * cm_setup_timer does not need to set an alarm for Charger Manager,
- * or an alarm previously configured is to be used.
- */
-static bool cm_setup_timer(void)
-{
- struct charger_manager *cm;
- unsigned int wakeup_ms = UINT_MAX;
- bool ret = false;
-
- mutex_lock(&cm_list_mtx);
-
- list_for_each_entry(cm, &cm_list, entry) {
- /* Skip if polling is not required for this CM */
- if (!is_polling_required(cm) && !cm->emergency_stop)
- continue;
- if (cm->desc->polling_interval_ms == 0)
- continue;
- CM_MIN_VALID(wakeup_ms, cm->desc->polling_interval_ms);
- }
-
- mutex_unlock(&cm_list_mtx);
-
- if (wakeup_ms < UINT_MAX && wakeup_ms > 0) {
- pr_info("Charger Manager wakeup timer: %u ms.\n", wakeup_ms);
- if (rtc_dev) {
- struct rtc_wkalrm tmp;
- unsigned long time, now;
- unsigned long add = DIV_ROUND_UP(wakeup_ms, 1000);
-
- /*
- * Set alarm with the polling interval (wakeup_ms)
- * except when rtc_wkalarm_save comes first.
- * However, the alarm time should be NOW +
- * CM_RTC_SMALL or later.
- */
- tmp.enabled = 1;
- rtc_read_time(rtc_dev, &tmp.time);
- rtc_tm_to_time(&tmp.time, &now);
- if (add < CM_RTC_SMALL)
- add = CM_RTC_SMALL;
- time = now + add;
-
- ret = true;
-
- if (rtc_wkalarm_save.enabled &&
- rtc_wkalarm_save_time &&
- rtc_wkalarm_save_time < time) {
- if (rtc_wkalarm_save_time < now + CM_RTC_SMALL)
- time = now + CM_RTC_SMALL;
- else
- time = rtc_wkalarm_save_time;
-
- /* The timer is not appointed by CM */
- ret = false;
- }
-
- pr_info("Waking up after %lu secs.\n",
- time - now);
-
- rtc_time_to_tm(time, &tmp.time);
- rtc_set_alarm(rtc_dev, &tmp);
- cm_suspend_duration_ms += wakeup_ms;
- return ret;
- }
- }
-
- if (rtc_dev)
- rtc_set_alarm(rtc_dev, &rtc_wkalarm_save);
- return false;
-}
-
-/**
- * cm_suspend_again - Determine whether suspend again or not
- *
- * Returns true if the system should be suspended again
- * Returns false if the system should be woken up
- */
-bool cm_suspend_again(void)
-{
- struct charger_manager *cm;
- bool ret = false;
-
- if (!g_desc || !g_desc->rtc_only_wakeup || !g_desc->rtc_only_wakeup() ||
- !cm_rtc_set)
- return false;
-
- if (cm_monitor())
- goto out;
-
- ret = true;
- mutex_lock(&cm_list_mtx);
- list_for_each_entry(cm, &cm_list, entry) {
- if (cm->status_save_ext_pwr_inserted != is_ext_pwr_online(cm) ||
- cm->status_save_batt != is_batt_present(cm)) {
- ret = false;
- break;
- }
- }
- mutex_unlock(&cm_list_mtx);
-
- cm_rtc_set = cm_setup_timer();
-out:
- /* It's about the time when the non-CM appointed timer goes off */
- if (rtc_wkalarm_save.enabled) {
- unsigned long now;
- struct rtc_time tmp;
-
- rtc_read_time(rtc_dev, &tmp);
- rtc_tm_to_time(&tmp, &now);
-
- if (rtc_wkalarm_save_time &&
- now + CM_RTC_SMALL >= rtc_wkalarm_save_time)
- return false;
- }
- return ret;
-}
-EXPORT_SYMBOL_GPL(cm_suspend_again);
-
-/**
- * setup_charger_manager - initialize charger_global_desc data
- * @gd: pointer to instance of charger_global_desc
- */
-int setup_charger_manager(struct charger_global_desc *gd)
-{
- if (!gd)
- return -EINVAL;
-
- if (rtc_dev)
- rtc_class_close(rtc_dev);
- rtc_dev = NULL;
- g_desc = NULL;
-
- if (!gd->rtc_only_wakeup) {
- pr_err("The callback rtc_only_wakeup is not given.\n");
- return -EINVAL;
- }
-
- if (gd->rtc_name) {
- rtc_dev = rtc_class_open(gd->rtc_name);
- if (IS_ERR_OR_NULL(rtc_dev)) {
- rtc_dev = NULL;
- /* Retry at probe. RTC may be not registered yet */
- }
- } else {
- pr_warn("No wakeup timer is given for charger manager."
- "In-suspend monitoring won't work.\n");
- }
-
- g_desc = gd;
- return 0;
-}
-EXPORT_SYMBOL_GPL(setup_charger_manager);
-
-static int charger_manager_probe(struct platform_device *pdev)
-{
- struct charger_desc *desc = dev_get_platdata(&pdev->dev);
- struct charger_manager *cm;
- int ret = 0, i = 0;
- union power_supply_propval val;
-
- if (g_desc && !rtc_dev && g_desc->rtc_name) {
- rtc_dev = rtc_class_open(g_desc->rtc_name);
- if (IS_ERR_OR_NULL(rtc_dev)) {
- rtc_dev = NULL;
- dev_err(&pdev->dev, "Cannot get RTC %s.\n",
- g_desc->rtc_name);
- ret = -ENODEV;
- goto err_alloc;
- }
- }
-
- if (!desc) {
- dev_err(&pdev->dev, "No platform data (desc) found.\n");
- ret = -ENODEV;
- goto err_alloc;
- }
-
- cm = kzalloc(sizeof(struct charger_manager), GFP_KERNEL);
- if (!cm) {
- dev_err(&pdev->dev, "Cannot allocate memory.\n");
- ret = -ENOMEM;
- goto err_alloc;
- }
-
- /* Basic Values. Unspecified are Null or 0 */
- cm->dev = &pdev->dev;
- cm->desc = kzalloc(sizeof(struct charger_desc), GFP_KERNEL);
- if (!cm->desc) {
- dev_err(&pdev->dev, "Cannot allocate memory.\n");
- ret = -ENOMEM;
- goto err_alloc_desc;
- }
- memcpy(cm->desc, desc, sizeof(struct charger_desc));
- cm->last_temp_mC = INT_MIN; /* denotes "unmeasured, yet" */
-
- if (!desc->charger_regulators || desc->num_charger_regulators < 1) {
- ret = -EINVAL;
- dev_err(&pdev->dev, "charger_regulators undefined.\n");
- goto err_no_charger;
- }
-
- if (!desc->psy_charger_stat || !desc->psy_charger_stat[0]) {
- dev_err(&pdev->dev, "No power supply defined.\n");
- ret = -EINVAL;
- goto err_no_charger_stat;
- }
-
- /* Counting index only */
- while (desc->psy_charger_stat[i])
- i++;
-
- cm->charger_stat = kzalloc(sizeof(struct power_supply *) * (i + 1),
- GFP_KERNEL);
- if (!cm->charger_stat) {
- ret = -ENOMEM;
- goto err_no_charger_stat;
- }
-
- for (i = 0; desc->psy_charger_stat[i]; i++) {
- cm->charger_stat[i] = power_supply_get_by_name(
- desc->psy_charger_stat[i]);
- if (!cm->charger_stat[i]) {
- dev_err(&pdev->dev, "Cannot find power supply "
- "\"%s\"\n",
- desc->psy_charger_stat[i]);
- ret = -ENODEV;
- goto err_chg_stat;
- }
- }
-
- cm->fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);
- if (!cm->fuel_gauge) {
- dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",
- desc->psy_fuel_gauge);
- ret = -ENODEV;
- goto err_chg_stat;
- }
-
- if (desc->polling_interval_ms == 0 ||
- msecs_to_jiffies(desc->polling_interval_ms) <= CM_JIFFIES_SMALL) {
- dev_err(&pdev->dev, "polling_interval_ms is too small\n");
- ret = -EINVAL;
- goto err_chg_stat;
- }
-
- if (!desc->temperature_out_of_range) {
- dev_err(&pdev->dev, "there is no temperature_out_of_range\n");
- ret = -EINVAL;
- goto err_chg_stat;
- }
-
- platform_set_drvdata(pdev, cm);
-
- memcpy(&cm->charger_psy, &psy_default, sizeof(psy_default));
-
- if (!desc->psy_name) {
- strncpy(cm->psy_name_buf, psy_default.name, PSY_NAME_MAX);
- } else {
- strncpy(cm->psy_name_buf, desc->psy_name, PSY_NAME_MAX);
- }
- cm->charger_psy.name = cm->psy_name_buf;
-
- /* Allocate for psy properties because they may vary */
- cm->charger_psy.properties = kzalloc(sizeof(enum power_supply_property)
- * (ARRAY_SIZE(default_charger_props) +
- NUM_CHARGER_PSY_OPTIONAL),
- GFP_KERNEL);
- if (!cm->charger_psy.properties) {
- dev_err(&pdev->dev, "Cannot allocate for psy properties.\n");
- ret = -ENOMEM;
- goto err_chg_stat;
- }
- memcpy(cm->charger_psy.properties, default_charger_props,
- sizeof(enum power_supply_property) *
- ARRAY_SIZE(default_charger_props));
- cm->charger_psy.num_properties = psy_default.num_properties;
-
- /* Find which optional psy-properties are available */
- if (!cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_CHARGE_NOW, &val)) {
- cm->charger_psy.properties[cm->charger_psy.num_properties] =
- POWER_SUPPLY_PROP_CHARGE_NOW;
- cm->charger_psy.num_properties++;
- }
- if (!cm->fuel_gauge->get_property(cm->fuel_gauge,
- POWER_SUPPLY_PROP_CURRENT_NOW,
- &val)) {
- cm->charger_psy.properties[cm->charger_psy.num_properties] =
- POWER_SUPPLY_PROP_CURRENT_NOW;
- cm->charger_psy.num_properties++;
- }
-
- if (desc->measure_battery_temp) {
- cm->charger_psy.properties[cm->charger_psy.num_properties] =
- POWER_SUPPLY_PROP_TEMP;
- cm->charger_psy.num_properties++;
- } else {
- cm->charger_psy.properties[cm->charger_psy.num_properties] =
- POWER_SUPPLY_PROP_TEMP_AMBIENT;
- cm->charger_psy.num_properties++;
- }
-
- ret = power_supply_register(NULL, &cm->charger_psy);
- if (ret) {
- dev_err(&pdev->dev, "Cannot register charger-manager with"
- " name \"%s\".\n", cm->charger_psy.name);
- goto err_register;
- }
-
- ret = regulator_bulk_get(&pdev->dev, desc->num_charger_regulators,
- desc->charger_regulators);
- if (ret) {
- dev_err(&pdev->dev, "Cannot get charger regulators.\n");
- goto err_bulk_get;
- }
-
- ret = try_charger_enable(cm, true);
- if (ret) {
- dev_err(&pdev->dev, "Cannot enable charger regulators\n");
- goto err_chg_enable;
- }
-
- /* Add to the list */
- mutex_lock(&cm_list_mtx);
- list_add(&cm->entry, &cm_list);
- mutex_unlock(&cm_list_mtx);
-
- return 0;
-
-err_chg_enable:
- regulator_bulk_free(desc->num_charger_regulators,
- desc->charger_regulators);
-err_bulk_get:
- power_supply_unregister(&cm->charger_psy);
-err_register:
- kfree(cm->charger_psy.properties);
-err_chg_stat:
- kfree(cm->charger_stat);
-err_no_charger_stat:
-err_no_charger:
- kfree(cm->desc);
-err_alloc_desc:
- kfree(cm);
-err_alloc:
- return ret;
-}
-
-static int __devexit charger_manager_remove(struct platform_device *pdev)
-{
- struct charger_manager *cm = platform_get_drvdata(pdev);
- struct charger_desc *desc = cm->desc;
-
- /* Remove from the list */
- mutex_lock(&cm_list_mtx);
- list_del(&cm->entry);
- mutex_unlock(&cm_list_mtx);
-
- regulator_bulk_free(desc->num_charger_regulators,
- desc->charger_regulators);
- power_supply_unregister(&cm->charger_psy);
- kfree(cm->charger_psy.properties);
- kfree(cm->charger_stat);
- kfree(cm->desc);
- kfree(cm);
-
- return 0;
-}
-
-static const struct platform_device_id charger_manager_id[] = {
- { "charger-manager", 0 },
- { },
-};
-MODULE_DEVICE_TABLE(platform, charger_manager_id);
-
-static int cm_suspend_prepare(struct device *dev)
-{
- struct charger_manager *cm = dev_get_drvdata(dev);
-
- if (!cm_suspended) {
- if (rtc_dev) {
- struct rtc_time tmp;
- unsigned long now;
-
- rtc_read_alarm(rtc_dev, &rtc_wkalarm_save);
- rtc_read_time(rtc_dev, &tmp);
-
- if (rtc_wkalarm_save.enabled) {
- rtc_tm_to_time(&rtc_wkalarm_save.time,
- &rtc_wkalarm_save_time);
- rtc_tm_to_time(&tmp, &now);
- if (now > rtc_wkalarm_save_time)
- rtc_wkalarm_save_time = 0;
- } else {
- rtc_wkalarm_save_time = 0;
- }
- }
- cm_suspended = true;
- }
-
- cm->status_save_ext_pwr_inserted = is_ext_pwr_online(cm);
- cm->status_save_batt = is_batt_present(cm);
-
- if (!cm_rtc_set) {
- cm_suspend_duration_ms = 0;
- cm_rtc_set = cm_setup_timer();
- }
-
- return 0;
-}
-
-static void cm_suspend_complete(struct device *dev)
-{
- struct charger_manager *cm = dev_get_drvdata(dev);
-
- if (cm_suspended) {
- if (rtc_dev) {
- struct rtc_wkalrm tmp;
-
- rtc_read_alarm(rtc_dev, &tmp);
- rtc_wkalarm_save.pending = tmp.pending;
- rtc_set_alarm(rtc_dev, &rtc_wkalarm_save);
- }
- cm_suspended = false;
- cm_rtc_set = false;
- }
-
- uevent_notify(cm, NULL);
-}
-
-static const struct dev_pm_ops charger_manager_pm = {
- .prepare = cm_suspend_prepare,
- .complete = cm_suspend_complete,
-};
-
-static struct platform_driver charger_manager_driver = {
- .driver = {
- .name = "charger-manager",
- .owner = THIS_MODULE,
- .pm = &charger_manager_pm,
- },
- .probe = charger_manager_probe,
- .remove = __devexit_p(charger_manager_remove),
- .id_table = charger_manager_id,
-};
-
-static int __init charger_manager_init(void)
-{
- return platform_driver_register(&charger_manager_driver);
-}
-late_initcall(charger_manager_init);
-
-static void __exit charger_manager_cleanup(void)
-{
- platform_driver_unregister(&charger_manager_driver);
-}
-module_exit(charger_manager_cleanup);
-
-MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
-MODULE_DESCRIPTION("Charger Manager");
-MODULE_LICENSE("GPL");