guru
/
android_kernel_lenovo_1050f
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
android_kernel_lenovo_1050f/drivers/power/intel_fuel_gauge.c

722 lines
20 KiB
C
Raw Permalink Blame History

/*
* intel_fuel_gauge.c - Intel MID Fuel Gauge Driver
*
* Copyright (C) 2014 Intel Corporation
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
* Srinidhi Rao <srinidhi.rao@intel.com>
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/workqueue.h>
#include <linux/jiffies.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <linux/slab.h>
#include <linux/param.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/wakelock.h>
#include <linux/version.h>
#include <linux/suspend.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/sched.h>
#include <linux/pm_runtime.h>
#include <linux/async.h>
#include <linux/reboot.h>
#include <linux/notifier.h>
#include <linux/power/intel_fuel_gauge.h>
#include <asm/intel_em_config.h>
#include <linux/power/battery_id.h>
#define DRIVER_NAME "intel_fuel_gauge"
#define INTEL_FG_WAKELOCK_TIMEOUT (1 * HZ)
#define INTEL_FG_DISP_LOWBATT_TIMEOUT (3 * HZ)
#define SOC_WARN_LVL1 14
#define SOC_WARN_LVL2 4
#define SOC_WARN_LVL3 0
#define BATT_OVP_OFFSET 50000 /* 50mV */
#define FG_ADC_VBATT_OFF_ADJ 5000 /* 5mV */
#define FG_ADC_IBATT_OFF_ADJ 30000 /* 30mA */
#define FG_OCV_SMOOTH_DIV_NOR 20
#define FG_OCV_SMOOTH_DIV_FULL 100
#define FG_OCV_SMOOTH_CAP_LIM 97
#define BOUND(min_val, x, max_val) min(max(x, min_val), max_val)
struct intel_fg_wakeup_event {
int soc_bfr_sleep;
bool wake_enable;
struct wake_lock wakelock;
};
struct intel_fg_info {
struct device *dev;
struct intel_fg_batt_spec *batt_spec;
struct intel_fg_input *input;
struct intel_fg_algo *algo;
struct intel_fg_algo *algo_sec;
struct delayed_work fg_worker;
struct power_supply psy;
struct mutex lock;
struct intel_fg_wakeup_event wake_ui;
struct fg_batt_params batt_params;
};
static struct intel_fg_info *info_ptr;
/* default battery spec data */
static struct intel_fg_batt_spec bspec = {
.volt_min_design = 3400000,
.volt_max_design = 4350000,
.temp_min = 0,
.temp_max = 450,
.charge_full_design = 4980000,
};
static enum power_supply_property fg_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_OCV,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CHARGE_NOW,
POWER_SUPPLY_PROP_CHARGE_FULL,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_CHARGE_COUNTER,
POWER_SUPPLY_PROP_MODEL_NAME,
};
/**
* intel_fg_check_low_batt_event - Checks low batt condition
* @info : Pointer to the intel_fg_info structure instance
*
* Returns 0 if success
*/
static int intel_fg_check_low_batt_event(struct intel_fg_info *info)
{
int ret;
/*
* Compare the previously stored capacity before going to suspend mode,
* with the current capacity during resume, along with the SOC_WARN_LVLs
* and if the new SOC during resume has fell below any of the low batt
* warning levels, hold the wake lock for 1 sec so that Android user
* space will have sufficient time to display the warning message.
*/
if (BOUND(info->batt_params.capacity, SOC_WARN_LVL1,
info->wake_ui.soc_bfr_sleep) == SOC_WARN_LVL1)
info->wake_ui.wake_enable = true;
else if (BOUND(info->batt_params.capacity, SOC_WARN_LVL2,
info->wake_ui.soc_bfr_sleep) == SOC_WARN_LVL2)
info->wake_ui.wake_enable = true;
else if (info->batt_params.capacity == SOC_WARN_LVL3)
info->wake_ui.wake_enable = true;
else {
if (wake_lock_active(&info_ptr->wake_ui.wakelock))
wake_unlock(&info_ptr->wake_ui.wakelock);
info->wake_ui.wake_enable = false;
}
if (info->wake_ui.wake_enable) {
wake_lock_timeout(&info_ptr->wake_ui.wakelock,
INTEL_FG_DISP_LOWBATT_TIMEOUT);
info->wake_ui.wake_enable = false;
}
return ret;
}
static int intel_fg_vbatt_soc_calc(struct intel_fg_info *info, int vbatt)
{
int soc;
soc = (vbatt - info->batt_spec->volt_min_design) * 100;
soc /= (info->batt_spec->volt_max_design - info->batt_spec->volt_min_design);
/* limit the capacity to 0 to 100 */
soc = clamp(soc, 0, 100);
return soc;
}
static int intel_fg_apply_volt_smooth(int vocv, int vbatt, int ibatt, int cap)
{
static int vsocv = -1;
int vdiff;
if (vsocv == -1) {
vsocv = vocv;
return vsocv;
}
/*
* for fully charged battery vbatt
* and ocv should be same.
*/
if (cap >= FG_OCV_SMOOTH_CAP_LIM &&
ibatt >= FG_ADC_IBATT_OFF_ADJ)
vocv = vbatt;
vdiff = vocv - vsocv;
/*
* handle leakage current or CC errors
* scenarios for OCV calculation.
*/
if ((ibatt > -FG_ADC_IBATT_OFF_ADJ &&
ibatt < FG_ADC_IBATT_OFF_ADJ) && (cap < 100)) {
vsocv += vdiff / FG_OCV_SMOOTH_DIV_FULL;
return vsocv;
}
/* round off to +/- 5000uV */
if (vdiff <= FG_ADC_VBATT_OFF_ADJ &&
vdiff >= -FG_ADC_VBATT_OFF_ADJ)
vsocv = vocv;
else
vsocv += vdiff / FG_OCV_SMOOTH_DIV_NOR;
return vsocv;
}
static void intel_fg_worker(struct work_struct *work)
{
struct intel_fg_info *fg_info = container_of(work,
struct intel_fg_info, fg_worker);
struct fg_algo_ip_params ip;
struct fg_algo_op_params op;
int ret;
memset(&op, 0, sizeof(struct fg_algo_op_params));
mutex_lock(&fg_info->lock);
ret = fg_info->input->get_delta_q(&ip.delta_q);
if (ret)
dev_err(fg_info->dev, "Error while getting delta Q\n");
ret = fg_info->input->get_batt_params(&ip.vbatt,
&ip.ibatt, &ip.bat_temp);
if (ret)
dev_err(fg_info->dev, "Error while getting battery props\n");
ret = fg_info->input->get_v_avg(&ip.vavg);
if (ret)
dev_err(fg_info->dev, "Error while getting V-AVG\n");
ret = fg_info->input->get_v_ocv(&ip.vocv);
if (ret)
dev_err(fg_info->dev, "Error while getting OCV\n");
ret = fg_info->input->get_i_avg(&ip.iavg);
if (ret)
dev_err(fg_info->dev, "Error while getting Current Average\n");
mutex_unlock(&fg_info->lock);
if (fg_info->algo) {
ret = fg_info->algo->fg_algo_process(&ip, &op);
mutex_lock(&fg_info->lock);
if (ret) {
dev_err(fg_info->dev, "Err processing FG Algo primary\n");
fg_info->batt_params.capacity = intel_fg_vbatt_soc_calc(fg_info,
ip.vocv);
} else {
/* update battery parameters */
fg_info->batt_params.capacity = op.soc;
fg_info->batt_params.charge_now = op.nac;
fg_info->batt_params.charge_full = op.fcc;
}
} else if (fg_info->algo_sec) {
ret = fg_info->algo_sec->fg_algo_process(&ip, &op);
mutex_lock(&fg_info->lock);
if (ret)
dev_err(fg_info->dev, "Err processing FG Algo Secondary\n");
/* update battery parameters from secondary Algo*/
fg_info->batt_params.capacity = op.soc;
fg_info->batt_params.charge_now = op.nac;
fg_info->batt_params.charge_full = op.fcc;
}
fg_info->batt_params.vbatt_now = ip.vbatt;
fg_info->batt_params.v_ocv_now = intel_fg_apply_volt_smooth(ip.vocv, ip.vbatt,
ip.ibatt, op.soc);
fg_info->batt_params.i_batt_now = ip.ibatt;
fg_info->batt_params.i_batt_avg = ip.iavg;
fg_info->batt_params.batt_temp_now = ip.bat_temp;
fg_info->batt_params.charge_counter += ip.delta_q;
if (op.calib_cc) {
ret = fg_info->input->calibrate_cc();
if (ret)
dev_err(fg_info->dev,
"error while calibrating CC\n");
}
mutex_unlock(&fg_info->lock);
power_supply_changed(&fg_info->psy);
if (fg_info->wake_ui.wake_enable)
intel_fg_check_low_batt_event(fg_info);
schedule_delayed_work(&fg_info->fg_worker, 30 * HZ);
}
static int intel_fg_battery_health(struct intel_fg_info *info)
{
struct fg_batt_params *bat = &info->batt_params;
int health;
if (!info->batt_params.is_valid_battery)
health = POWER_SUPPLY_HEALTH_UNKNOWN;
else if (bat->vbatt_now > info->batt_spec->volt_max_design
+ BATT_OVP_OFFSET)
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
else if (bat->batt_temp_now > info->batt_spec->temp_max ||
bat->batt_temp_now < info->batt_spec->temp_min)
health = POWER_SUPPLY_HEALTH_OVERHEAT;
else if (bat->v_ocv_now < info->batt_spec->volt_min_design)
health = POWER_SUPPLY_HEALTH_DEAD;
else
health = POWER_SUPPLY_HEALTH_GOOD;
return health;
}
static int intel_fuel_gauge_get_property(struct power_supply *psup,
enum power_supply_property prop,
union power_supply_propval *val)
{
struct intel_fg_info *fg_info = container_of(psup,
struct intel_fg_info, psy);
mutex_lock(&fg_info->lock);
switch (prop) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = fg_info->batt_params.status;
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = 0x1;
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = intel_fg_battery_health(fg_info);
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = fg_info->batt_params.vbatt_now;
break;
case POWER_SUPPLY_PROP_VOLTAGE_OCV:
val->intval = fg_info->batt_params.v_ocv_now;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
val->intval = fg_info->batt_spec->volt_min_design;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
val->intval = fg_info->batt_spec->volt_max_design;
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = fg_info->batt_params.i_batt_now;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
val->intval = fg_info->batt_params.i_batt_avg;
break;
case POWER_SUPPLY_PROP_CAPACITY:
if (fg_info->algo || fg_info->algo_sec)
val->intval = fg_info->batt_params.capacity;
else
val->intval = intel_fg_vbatt_soc_calc(fg_info,
fg_info->batt_params.v_ocv_now);
break;
case POWER_SUPPLY_PROP_TEMP:
val->intval = fg_info->batt_params.batt_temp_now;
break;
case POWER_SUPPLY_PROP_CHARGE_NOW:
val->intval = fg_info->batt_params.charge_now;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
val->intval = fg_info->batt_params.charge_full;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
val->intval = fg_info->batt_spec->charge_full_design;
break;
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
val->intval = fg_info->batt_params.charge_counter;
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = fg_info->batt_params.battid;
break;
default:
mutex_unlock(&fg_info->lock);
return -EINVAL;
}
mutex_unlock(&fg_info->lock);
return 0;
}
static int intel_fuel_gauge_set_property(struct power_supply *psup,
enum power_supply_property prop,
union power_supply_propval *val)
{
struct intel_fg_info *fg_info = container_of(psup,
struct intel_fg_info, psy);
mutex_lock(&fg_info->lock);
switch (prop) {
case POWER_SUPPLY_PROP_STATUS:
fg_info->batt_params.status = val->intval;
break;
default:
dev_warn(fg_info->dev, "invalid psy prop\b");
mutex_unlock(&fg_info->lock);
return -EINVAL;
}
mutex_unlock(&fg_info->lock);
return 0;
}
static void intel_fg_ext_psy_changed(struct power_supply *psy)
{
struct intel_fg_info *fg_info = container_of(psy,
struct intel_fg_info, psy);
dev_info(fg_info->dev, "%s\n", __func__);
power_supply_changed(&fg_info->psy);
}
static void intel_fg_init_batt_props(struct intel_fg_info *fg_info)
{
struct fg_algo_ip_params ip;
int ret;
ret = fg_info->input->get_batt_params(&ip.vbatt,
&ip.ibatt, &ip.bat_temp);
if (ret)
dev_err(fg_info->dev, "Error while getting battery props\n");
ret = fg_info->input->get_v_ocv(&ip.vocv);
if (ret)
dev_err(fg_info->dev, "\nError while getting OCV");
ret = fg_info->input->get_i_avg(&ip.iavg);
if (ret)
dev_err(fg_info->dev, "\nError while getting Current Average");
fg_info->batt_params.capacity = intel_fg_vbatt_soc_calc(fg_info,
ip.vocv);
fg_info->batt_params.vbatt_now = ip.vbatt;
fg_info->batt_params.v_ocv_now = ip.vocv;
fg_info->batt_params.i_batt_now = ip.ibatt;
fg_info->batt_params.i_batt_avg = ip.iavg;
fg_info->batt_params.batt_temp_now = ip.bat_temp;
}
static void intel_fuel_gauge_algo_init(struct intel_fg_info *fg_info)
{
int ret;
ret = fg_info->input->get_v_ocv_bootup(
&fg_info->batt_params.v_ocv_bootup);
if (ret)
dev_err(fg_info->dev, "error in getting bootup voltage\n");
else
dev_info(fg_info->dev, "boot up voltage:%d\n",
fg_info->batt_params.v_ocv_bootup);
ret = fg_info->input->get_i_bat_bootup(
&fg_info->batt_params.i_bat_bootup);
if (ret)
dev_err(fg_info->dev, "error in getting bootup ibat\n");
else
dev_info(fg_info->dev, "boot up ibat:%d\n",
fg_info->batt_params.i_bat_bootup);
/* update battery adc params */
intel_fg_init_batt_props(info_ptr);
fg_info->batt_params.boot_flag = true;
if (fg_info->algo && !fg_info->algo->init_done) {
fg_info->algo->fg_algo_init(&fg_info->batt_params);
fg_info->algo->init_done = true;
} else if (fg_info->algo_sec && !fg_info->algo_sec->init_done) {
fg_info->algo_sec->fg_algo_init(&fg_info->batt_params);
fg_info->algo_sec->init_done = true;
}
fg_info->batt_params.boot_flag = false;
/* Schedule worker in 5 Sec to update the FG status during bootup.*/
schedule_delayed_work(&fg_info->fg_worker, 5 * HZ);
}
int intel_fg_register_input(struct intel_fg_input *input)
{
int ret;
if (!info_ptr)
return -EAGAIN;
mutex_lock(&info_ptr->lock);
info_ptr->input = input;
/* init fuel gauge lib's or algo's */
if (info_ptr->algo || info_ptr->algo_sec)
intel_fuel_gauge_algo_init(info_ptr);
else
intel_fg_init_batt_props(info_ptr);
mutex_unlock(&info_ptr->lock);
info_ptr->psy.name = "intel_fuel_gauge";
info_ptr->psy.type = POWER_SUPPLY_TYPE_BATTERY;
info_ptr->psy.get_property = &intel_fuel_gauge_get_property;
info_ptr->psy.set_property = &intel_fuel_gauge_set_property;
info_ptr->psy.external_power_changed = &intel_fg_ext_psy_changed;
info_ptr->psy.properties = &fg_props;
info_ptr->psy.num_properties = ARRAY_SIZE(fg_props);
ret = power_supply_register(info_ptr->dev, &info_ptr->psy);
if (ret) {
dev_err(info_ptr->dev, "power supply class reg failed\n");
return ret;
}
/*Start Coulomb Counter Calibration*/
ret = info_ptr->input->calibrate_cc();
if (ret)
dev_err(info_ptr->dev, "error in calibrating CC\n");
/*If No FG Algo has been registered, schedule the worker thread
upon input driver registration*/
if (!info_ptr->algo && !info_ptr->algo_sec)
schedule_delayed_work(&info_ptr->fg_worker, 40 * HZ);
return 0;
}
EXPORT_SYMBOL(intel_fg_register_input);
int intel_fg_unregister_input(struct intel_fg_input *input)
{
if (!info_ptr || !info_ptr->input)
return -ENODEV;
flush_scheduled_work();
power_supply_unregister(&info_ptr->psy);
mutex_lock(&info_ptr->lock);
info_ptr->input = NULL;
mutex_unlock(&info_ptr->lock);
return 0;
}
EXPORT_SYMBOL(intel_fg_unregister_input);
int intel_fg_register_algo(struct intel_fg_algo *algo)
{
if (!info_ptr)
return -EAGAIN;
mutex_lock(&info_ptr->lock);
if (algo->type == INTEL_FG_ALGO_PRIMARY) {
if (!info_ptr->algo)
info_ptr->algo = algo;
else
goto register_algo;
} else {
if (!info_ptr->algo_sec)
info_ptr->algo_sec = algo;
else
goto register_algo;
}
/* init fuel gauge lib's or algo's */
if (info_ptr->input)
intel_fuel_gauge_algo_init(info_ptr);
mutex_unlock(&info_ptr->lock);
return 0;
register_algo:
mutex_unlock(&info_ptr->lock);
return -EBUSY;
}
EXPORT_SYMBOL(intel_fg_register_algo);
int intel_fg_unregister_algo(struct intel_fg_algo *algo)
{
if (!info_ptr)
return -ENODEV;
mutex_lock(&info_ptr->lock);
if (algo->type == INTEL_FG_ALGO_PRIMARY) {
if (info_ptr->algo)
info_ptr->algo = NULL;
else
goto unregister_algo;
} else {
if (!info_ptr->algo_sec)
info_ptr->algo_sec = NULL;
else
goto unregister_algo;
}
mutex_unlock(&info_ptr->lock);
return 0;
unregister_algo:
mutex_unlock(&info_ptr->lock);
return -ENODEV;
}
EXPORT_SYMBOL(intel_fg_unregister_algo);
static int intel_fuel_gauge_probe(struct platform_device *pdev)
{
struct intel_fg_info *fg_info;
struct em_config_oem0_data oem0_data;
int ret = 0;
fg_info = devm_kzalloc(&pdev->dev, sizeof(*fg_info), GFP_KERNEL);
if (!fg_info) {
dev_err(&pdev->dev, "mem alloc failed\n");
return -ENOMEM;
}
fg_info->dev = &pdev->dev;
fg_info->batt_spec = &bspec;
platform_set_drvdata(pdev, fg_info);
mutex_init(&fg_info->lock);
INIT_DELAYED_WORK(&fg_info->fg_worker, &intel_fg_worker);
fg_info->batt_params.status = POWER_SUPPLY_STATUS_DISCHARGING;
if (em_config_get_oem0_data(&oem0_data)) {
fg_info->batt_params.is_valid_battery = true;
strncpy(fg_info->batt_params.battid, oem0_data.batt_id, BATTID_STR_LEN);
} else {
fg_info->batt_params.is_valid_battery = false;
strncpy(fg_info->batt_params.battid, "unknown", BATTID_STR_LEN);
}
wake_lock_init(&fg_info->wake_ui.wakelock, WAKE_LOCK_SUSPEND,
"intel_fg_wakelock");
info_ptr = fg_info;
return 0;
}
static int intel_fuel_gauge_remove(struct platform_device *pdev)
{
struct intel_fg_info *fg_info = platform_get_drvdata(pdev);
wake_lock_destroy(&fg_info->wake_ui.wakelock);
return 0;
}
static int intel_fuel_gauge_suspend(struct device *dev)
{
/*
* Store the current SOC value before going to suspend as
* this value will be used by the worker function in resume to
* check whether the low battery threshold has been crossed.
*/
info_ptr->wake_ui.soc_bfr_sleep = info_ptr->batt_params.capacity;
cancel_delayed_work_sync(&info_ptr->fg_worker);
return 0;
}
static bool intel_fuel_gauge_suspend_again(void)
{
return false;
}
static int intel_fuel_gauge_resume(struct device *dev)
{
/*
* Set the wake_enable flag as true and schedule the
* work queue at 0 secs so that the worker function is
* scheduled immediately at the next available tick.
* Once the intel_fg_worker function starts executing
* It can check and clear the wake_enable flag and hold
* the wakelock if low batt warning notification has to
* be sent
*/
wake_lock_timeout(&info_ptr->wake_ui.wakelock, INTEL_FG_WAKELOCK_TIMEOUT);
info_ptr->wake_ui.wake_enable = true;
schedule_delayed_work(&info_ptr->fg_worker, 0);
return 0;
}
static int intel_fuel_gauge_runtime_suspend(struct device *dev)
{
return 0;
}
static int intel_fuel_gauge_runtime_resume(struct device *dev)
{
return 0;
}
static int intel_fuel_gauge_runtime_idle(struct device *dev)
{
return 0;
}
static const struct dev_pm_ops intel_fuel_gauge_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(intel_fuel_gauge_suspend,
intel_fuel_gauge_resume)
SET_RUNTIME_PM_OPS(intel_fuel_gauge_runtime_suspend,
intel_fuel_gauge_runtime_resume,
intel_fuel_gauge_runtime_idle)
};
static const struct platform_device_id intel_fuel_gauge_id[] = {
{DRIVER_NAME, },
{ },
};
MODULE_DEVICE_TABLE(platform, intel_fuel_gauge_id);
static struct platform_driver intel_fuel_gauge_driver = {
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.pm = &intel_fuel_gauge_pm_ops,
},
.probe = intel_fuel_gauge_probe,
.remove = intel_fuel_gauge_remove,
.id_table = intel_fuel_gauge_id,
};
static int __init intel_fuel_gauge_init(void)
{
return platform_driver_register(&intel_fuel_gauge_driver);
}
module_init(intel_fuel_gauge_init);
static void __exit intel_fuel_gauge_exit(void)
{
platform_driver_unregister(&intel_fuel_gauge_driver);
}
module_exit(intel_fuel_gauge_exit);
MODULE_AUTHOR("Ramakrishna Pallala <ramakrishna.pallala@intel.com>");
MODULE_AUTHOR("Srinidhi Rao <srinidhi.rao@intel.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Intel MID Fuel Gauge Driver");
Reference in New Issue View Git Blame Copy Permalink