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android_kernel_samsung_msm8976/drivers/battery/s2mu005_charger.c

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/* drivers/battery/s2mu005_charger.c
* S2MU005 Charger Driver
*
* 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; either version 2
* of the License, or (at your option) any later version.
*/
#include <linux/mfd/samsung/s2mu005.h>
#include <linux/battery/charger/s2mu005_charger.h>
#include <linux/version.h>
#include <linux/battery/sec_battery.h>
#define ENABLE_MIVR 1
#define EN_OVP_IRQ 1
#define EN_IEOC_IRQ 1
#define EN_TOPOFF_IRQ 1
#define EN_RECHG_REQ_IRQ 0
#define EN_TR_IRQ 0
#define EN_MIVR_SW_REGULATION 0
#define EN_BST_IRQ 0
#define MINVAL(a, b) ((a <= b) ? a : b)
#define EOC_DEBOUNCE_CNT 2
#define HEALTH_DEBOUNCE_CNT 0
#define DEFAULT_CHARGING_CURRENT 500
#define EOC_SLEEP 200
#define EOC_TIMEOUT (EOC_SLEEP * 6)
#ifndef EN_TEST_READ
#define EN_TEST_READ 1
#endif
#define ENABLE 1
#define DISABLE 0
struct s2mu005_charger_data {
struct i2c_client *client;
struct device *dev;
struct s2mu005_platform_data *s2mu005_pdata;
struct delayed_work charger_work;
struct delayed_work det_bat_work;
struct workqueue_struct *charger_wqueue;
struct power_supply psy_chg;
struct power_supply psy_otg;
s2mu005_charger_platform_data_t *pdata;
int dev_id;
int input_current;
int charging_current;
int topoff_current;
int cable_type;
bool is_charging;
int charge_mode;
struct mutex io_lock;
/* register programming */
int reg_addr;
int reg_data;
bool ovp;
int unhealth_cnt;
int status;
/* s2mu005 */
int irq_det_bat;
int irq_chg;
u8 fg_clock;
int fg_mode;
};
static enum power_supply_property sec_charger_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_CURRENT_MAX,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL,
POWER_SUPPLY_PROP_CHARGING_ENABLED,
POWER_SUPPLY_PROP_INPUT_VOLTAGE_REGULATION,
POWER_SUPPLY_PROP_AUTHENTIC,
};
static enum power_supply_property s2mu005_otg_props[] = {
POWER_SUPPLY_PROP_ONLINE,
};
int otg_enable_flag;
static void s2mu005_set_fast_charging_current(struct i2c_client *i2c,
int charging_current);
static int s2mu005_get_charging_health(struct s2mu005_charger_data *charger);
static void s2mu005_test_read(struct i2c_client *i2c)
{
u8 data;
char str[1016] = {0,};
int i;
for (i = 0x8; i <= 0x1A; i++) {
s2mu005_read_reg(i2c, i, &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", i, data);
}
pr_info("[DEBUG]%s: %s\n", __func__, str);
}
static BLOCKING_NOTIFIER_HEAD(s2m_acok_notifier_list);
static int s2m_acok_register_notifier(struct notifier_block *nb)
{
return blocking_notifier_chain_register(&s2m_acok_notifier_list, nb);
}
static int s2m_acok_unregister_notifier(struct notifier_block *nb)
{
return blocking_notifier_chain_unregister(&s2m_acok_notifier_list, nb);
}
int s2m_acok_notify_call_chain(void)
{
int ret = blocking_notifier_call_chain(&s2m_acok_notifier_list, 0, NULL);
return notifier_to_errno(ret);
}
EXPORT_SYMBOL(s2m_acok_notify_call_chain);
static int s2m_acok_notifier_call(
struct notifier_block *notifer,
unsigned long event, void *v)
{
struct power_supply *psy = get_power_supply_by_name("s2mu005-charger");
struct s2mu005_charger_data *charger =
container_of(psy, struct s2mu005_charger_data, psy_chg);
pr_info("s2m acok noti!!\n");
/* Delay 100ms for debounce */
queue_delayed_work(charger->charger_wqueue, &charger->charger_work, msecs_to_jiffies(100));
return true;
}
struct notifier_block s2m_acok_notifier = {
.notifier_call = s2m_acok_notifier_call,
};
static void s2mu005_charger_otg_control(struct s2mu005_charger_data *charger,
bool enable)
{
otg_enable_flag = enable;
if (!enable) {
/* set mode to Charger mode */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
2 << REG_MODE_SHIFT, REG_MODE_MASK);
/* mask VMID_INT */
s2mu005_update_reg(charger->client, S2MU005_REG_SC_INT_MASK,
1 << VMID_M_SHIFT, VMID_M_MASK);
pr_info("%s : Turn off OTG\n", __func__);
} else {
/* unmask VMID_INT */
s2mu005_update_reg(charger->client, S2MU005_REG_SC_INT_MASK,
0 << VMID_M_SHIFT, VMID_M_MASK);
/* set mode to OTG */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
4 << REG_MODE_SHIFT, REG_MODE_MASK);
/* set boost frequency to 1MHz */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL11,
2 << SET_OSC_BST_SHIFT, SET_OSC_BST_MASK);
/* set OTG current limit to 1.5 A */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL4,
3 << SET_OTG_OCP_SHIFT, SET_OTG_OCP_MASK);
/* VBUS switches are OFF when OTG over-current happen */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL4,
1 << OTG_OCP_SW_OFF_SHIFT, OTG_OCP_SW_OFF_MASK);
/* set OTG voltage to 5.1 V */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL5,
0x16 << SET_VF_VMID_BST_SHIFT, SET_VF_VMID_BST_MASK);
pr_info("%s : Turn on OTG\n", __func__);
}
#if EN_TEST_READ
s2mu005_test_read(charger->client);
#endif
}
static void s2mu005_enable_charger_switch(struct s2mu005_charger_data *charger,
int onoff)
{
/*
#if defined(CONFIG_SEC_FACTORY)
pr_info("%s: Factory Mode Skip CHG_EN Control\n", __func__);
return;
#endif
*/
#if 0
/* prevent vsys drip, set full current at QBAT */
s2mu005_set_fast_charging_current(charger->client, 1700);
msleep(20);
#endif
if (onoff > 0) {
pr_err("[DEBUG]%s: turn on charger\n", __func__);
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
0 << REG_MODE_SHIFT, REG_MODE_MASK);
msleep(50);
s2mu005_update_reg(charger->client, 0x2A, 0 << 3, 0x08); // set async time 150msec
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
2 << REG_MODE_SHIFT, REG_MODE_MASK);
msleep(150);
s2mu005_update_reg(charger->client, 0x2A, 1 << 3, 0x08); // set async time 20msec recover
} else {
pr_err("[DEBUG] %s: turn off charger\n", __func__);
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
0 << REG_MODE_SHIFT, REG_MODE_MASK);
}
}
static void s2mu005_set_regulation_voltage(struct s2mu005_charger_data *charger,
int float_voltage)
{
int data;
/*
#if defined(CONFIG_SEC_FACTORY)
return;
#endif
*/
pr_info("[DEBUG]%s: float_voltage %d \n", __func__, float_voltage);
if (float_voltage <= 3900)
data = 0;
else if (float_voltage > 3900 && float_voltage <= 4400)
data = (float_voltage - 3900) / 10;
else
data = 0x32;
s2mu005_update_reg(charger->client,
S2MU005_CHG_CTRL8, data << SET_VF_VBAT_SHIFT, SET_VF_VBAT_MASK);
}
static void s2mu005_set_input_current_limit(struct s2mu005_charger_data *charger,
int charging_current)
{
int data;
/*
#if defined(CONFIG_SEC_FACTORY)
return;
#endif
*/
pr_info("[DEBUG]%s: current %d \n", __func__, charging_current);
if (charging_current <= 100)
data = 0;
else if (charging_current >= 100 && charging_current <= 2600)
data = (charging_current - 100) / 50;
else
data = 0x3F;
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL2, data << INPUT_CURRENT_LIMIT_SHIFT,
INPUT_CURRENT_LIMIT_MASK);
#if EN_TEST_READ
s2mu005_test_read(charger->client);
#endif
}
static int s2mu005_get_input_current_limit(struct i2c_client *i2c)
{
u8 data;
int ret;
ret = s2mu005_read_reg(i2c, S2MU005_CHG_CTRL2, &data);
if (ret < 0)
return ret;
data = data & INPUT_CURRENT_LIMIT_MASK;
if (data > 0x3F)
data = 0x3F;
return data * 50 + 100;
}
static void s2mu005_set_fast_charging_current(struct i2c_client *i2c,
int charging_current)
{
int data;
/*
#if defined(CONFIG_SEC_FACTORY)
return;
#endif
*/
pr_info("[DEBUG]%s: current %d \n", __func__, charging_current);
if (charging_current <= 100)
data = 0;
else if (charging_current >= 100 && charging_current <= 2600)
data = ((charging_current - 100) / 50) + 1;
else
data = 0x33;
s2mu005_update_reg(i2c, S2MU005_CHG_CTRL7, data << FAST_CHARGING_CURRENT_SHIFT,
FAST_CHARGING_CURRENT_MASK);
/* work-around for unstable booting */
if (data > 0x13) data = 0x13; /* 0x13 : 1A */
s2mu005_update_reg(i2c, S2MU005_CHG_CTRL6, data << COOL_CHARGING_CURRENT_SHIFT,
COOL_CHARGING_CURRENT_MASK); /* set cool charging current with max limit 1A */
#if EN_TEST_READ
s2mu005_test_read(i2c);
#endif
}
static int s2mu005_get_fast_charging_current(struct i2c_client *i2c)
{
u8 data;
int ret;
ret = s2mu005_read_reg(i2c, S2MU005_CHG_CTRL7, &data);
if (ret < 0)
return ret;
data = data & FAST_CHARGING_CURRENT_MASK;
if (data > 0x33)
data = 0x33;
return (data - 1 )* 50 + 100;
}
static int s2mu005_get_topoff_current(struct s2mu005_charger_data *charger)
{
u8 data;
int ret;
ret = s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL10, &data);
if (ret < 0)
return ret;
data = data & FIRST_TOPOFF_CURRENT_MASK;
if (data > 0x0F)
data = 0x0F;
return data * 25 + 100;
}
static void s2mu005_set_topoff_current(struct i2c_client *i2c,
int eoc_1st_2nd, int current_limit)
{
int data;
pr_info("[DEBUG]%s: current %d \n", __func__, current_limit);
if (current_limit <= 100)
data = 0;
else if (current_limit > 100 && current_limit <= 475)
data = (current_limit - 100) / 25;
else
data = 0x0F;
switch(eoc_1st_2nd) {
case 1:
s2mu005_update_reg(i2c, S2MU005_CHG_CTRL10, data << FIRST_TOPOFF_CURRENT_SHIFT,
FIRST_TOPOFF_CURRENT_MASK);
break;
case 2:
s2mu005_update_reg(i2c, S2MU005_CHG_CTRL10, data << SECOND_TOPOFF_CURRENT_SHIFT,
SECOND_TOPOFF_CURRENT_MASK);
break;
default:
break;
}
}
enum {
S2MU005_MIVR_4200MV = 0,
S2MU005_MIVR_4300MV,
S2MU005_MIVR_4400MV,
S2MU005_MIVR_4500MV,
S2MU005_MIVR_4600MV,
S2MU005_MIVR_4700MV,
S2MU005_MIVR_4800MV,
S2MU005_MIVR_4900MV,
};
#if ENABLE_MIVR
/* charger input regulation voltage setting */
static void s2mu005_set_mivr_level(struct s2mu005_charger_data *charger)
{
int mivr = S2MU005_MIVR_4500MV;
u8 temp = 0;
s2mu005_read_reg(charger->client, 0x1A, &temp);
temp |= 0x80;
s2mu005_write_reg(charger->client, 0x1A, temp);
s2mu005_update_reg(charger->client,
S2MU005_CHG_CTRL1, mivr << SET_VIN_DROP_SHIFT, SET_VIN_DROP_MASK);
}
#endif /*ENABLE_MIVR*/
/* here is set init charger data */
#define S2MU003_MRSTB_CTRL 0X47
static bool s2mu005_chg_init(struct s2mu005_charger_data *charger)
{
u8 temp;
/* Read Charger IC Dev ID */
s2mu005_read_reg(charger->client, S2MU005_REG_REV_ID, &temp);
charger->dev_id = temp & 0x0F;
dev_info(charger->dev, "%s : DEV ID : 0x%x\n", __func__,
charger->dev_id);
/* ready for self-discharge */
s2mu005_update_reg(charger->client, S2MU005_REG_SELFDIS_CFG3,
SELF_DISCHG_MODE_MASK, SELF_DISCHG_MODE_MASK);
/* Buck switching mode frequency setting */
/* Disable Timer function (Charging timeout fault) */
// to be
/* Disable TE */
// to be
/* MUST set correct regulation voltage first
* Before MUIC pass cable type information to charger
* charger would be already enabled (default setting)
* it might cause EOC event by incorrect regulation voltage */
// to be
#if !(ENABLE_MIVR)
/* voltage regulatio disable does not exist mu005 */
#endif
/* TOP-OFF debounce time set 256us */
// only 003 ? need to check
/* Disable (set 0min TOP OFF Timer) */
// to be
s2mu005_read_reg(charger->client, 0x7B, &temp);
s2mu005_update_reg(charger->client, 0x2A, 1 << 3, 0x08); // set async time 20msec recover
charger->fg_clock = temp;
s2mu005_read_reg(charger->client, 0x20, &temp); //topoff timer disable
temp &= ~0x38;
temp |= 0x38;
s2mu005_write_reg(charger->client, 0x20, temp);
/* float voltage */
s2mu005_set_regulation_voltage(charger,
charger->pdata->chg_float_voltage);
dev_info(charger->dev, "%s: set float voltage : %d\n", __func__,charger->pdata->chg_float_voltage);
return true;
}
static void s2mu005_charger_initialize(struct s2mu005_charger_data *charger)
{
u8 temp = 0;
s2mu005_read_reg(charger->client, 0x5A, &temp);
temp |= 0x80;
s2mu005_write_reg(charger->client, 0x5A, temp);
if(charger->dev_id == 0) {
s2mu005_write_reg(charger->client, 0x87, 0x00);
s2mu005_write_reg(charger->client, 0x92, 0xE5);
s2mu005_write_reg(charger->client, 0x97, 0x85);
s2mu005_write_reg(charger->client, 0x9A, 0x67);
s2mu005_write_reg(charger->client, 0x9C, 0xEA);
s2mu005_write_reg(charger->client, 0x9E, 0x6E);
s2mu005_write_reg(charger->client, 0xA1, 0x20);
s2mu005_write_reg(charger->client, 0xA4, 0x0A);
s2mu005_write_reg(charger->client, 0xA5, 0x45);
s2mu005_read_reg(charger->client, 0x51, &temp);
if(temp & 0x02) {
s2mu005_read_reg(charger->client, 0x49, &temp);
switch(temp & 0x1F) {
case 0x18:
case 0x19:
case 0x1C:
case 0x1D:
break;
default:
s2mu005_read_reg(charger->client, 0x89, &temp);
temp &= 0xFC;
temp |= 0x01;
s2mu005_write_reg(charger->client, 0x89, temp);
break;
}
}
}
/* set fastest speed for QBAT switch */
s2mu005_read_reg(charger->client, 0x87, &temp);
temp &= ~0xF0;
s2mu005_write_reg(charger->client, 0x87, temp);
s2mu005_write_reg(charger->client, 0x27, 0x51);
s2mu005_write_reg(charger->client, 0x1A, 0x92);
s2mu005_read_reg(charger->client, 0x13, &temp);
temp &= ~0x60;
s2mu005_write_reg(charger->client, 0x13, temp);
s2mu005_read_reg(charger->client, 0xA8, &temp);
temp &= 0x7F;
temp |= 0x80;
s2mu005_write_reg(charger->client, 0xA8, temp);
s2mu005_write_reg(charger->client, 0x0F, 0x50);
s2mu005_read_reg(charger->client, 0x89, &temp);
temp &= ~0x80;
s2mu005_write_reg(charger->client, 0x89, temp);
s2mu005_read_reg(charger->client, 0xA5, &temp);
temp &= ~0x04;
s2mu005_write_reg(charger->client, 0xA5, temp);
s2mu005_read_reg(charger->client, 0x20, &temp); //topoff timer disable
temp &= ~0x38;
temp |= 0x38;
s2mu005_write_reg(charger->client, 0x20, temp);
#if ENABLE_MIVR
s2mu005_set_mivr_level(charger);
#endif /*DISABLE_MIVR*/
/* float voltage */
s2mu005_set_regulation_voltage(charger,
charger->pdata->chg_float_voltage);
/* topoff current */
charger->topoff_current = 100;
s2mu005_set_topoff_current(charger->client, 1, charger->topoff_current);
if (charger->pdata->chg_eoc_dualpath) {
s2mu005_set_topoff_current(charger->client, 2, charger->topoff_current);
}
dev_info(charger->dev, "%s: Re-initialize Charger completely\n", __func__);
}
static int s2mu005_get_charging_status(struct s2mu005_charger_data *charger)
{
int status = POWER_SUPPLY_STATUS_UNKNOWN;
int ret;
u8 chg_sts;
union power_supply_propval chg_mode;
union power_supply_propval value;
ret = s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS0, &chg_sts);
psy_do_property("battery", get, POWER_SUPPLY_PROP_CHARGE_NOW, chg_mode);
psy_do_property("s2mu005-fuelgauge", get, POWER_SUPPLY_PROP_CURRENT_AVG, value);
if (ret < 0)
return status;
switch (chg_sts & 0x0F) {
case 0x00: //charger is off
status = POWER_SUPPLY_STATUS_DISCHARGING;
break;
case 0x02: //Pre-charge state
case 0x03: //Cool-charge state
case 0x04: //CC state
case 0x05: //CV state
status = POWER_SUPPLY_STATUS_CHARGING;
break;
case 0x07: //Top-off state
case 0x06: //Done Flag
case 0x08: //Done state
dev_info(charger->dev, "%s: full check curr_avg(%d), topoff_curr(%d)\n",
__func__, value.intval, charger->topoff_current);
if (value.intval < charger->topoff_current)
status = POWER_SUPPLY_STATUS_FULL;
else
status = POWER_SUPPLY_STATUS_CHARGING;
break;
case 0x0F: //Input is invalid
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
break;
default:
break;
}
#if EN_TEST_READ
s2mu005_test_read(charger->client);
#endif
return status;
}
static int s2mu005_get_charge_type(struct i2c_client *iic)
{
int status = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
u8 ret;
s2mu005_read_reg(iic, S2MU005_CHG_STATUS0, &ret);
if (ret < 0)
dev_err(&iic->dev, "%s fail\n", __func__);
switch (ret & CHG_OK_MASK ) {
case CHG_OK_MASK:
status = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
default:
/* 005 does not need to do this */
/* pre-charge mode */
status = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
}
return status;
}
static bool s2mu005_get_batt_present(struct i2c_client *iic)
{
u8 ret;
s2mu005_read_reg(iic, S2MU005_CHG_STATUS1, &ret);
if (ret < 0)
return false;
return (ret & DET_BAT_STATUS_MASK) ? true : false;
}
static int s2mu005_get_charging_health(struct s2mu005_charger_data *charger)
{
u8 ret;
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS3, &ret);
s2mu005_write_reg(charger->client, S2MU005_CHG_CTRL13, 0x01); /* wdt clear */
ret &= 0x0f;
if (charger->is_charging && (ret == 0x05)) {
dev_info(&charger->client->dev,
"%s: watchdog error status, enable charger\n", __func__);
s2mu005_enable_charger_switch(charger, charger->is_charging);
}
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS1, &ret);
if (ret < 0)
return POWER_SUPPLY_HEALTH_UNKNOWN;
ret = (ret & 0x70) >> 4;
switch (ret) {
case 0x03:
case 0x05:
charger->ovp = false;
charger->unhealth_cnt = 0;
return POWER_SUPPLY_HEALTH_GOOD;
default:
break;
}
charger->unhealth_cnt++;
if (charger->unhealth_cnt < HEALTH_DEBOUNCE_CNT)
return POWER_SUPPLY_HEALTH_GOOD;
/* 005 need to check ovp & health count */
charger->unhealth_cnt = HEALTH_DEBOUNCE_CNT;
if (charger->ovp)
return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
return POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
}
static int sec_chg_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
int chg_curr, aicr;
struct s2mu005_charger_data *charger =
container_of(psy, struct s2mu005_charger_data, psy_chg);
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = charger->charging_current ? 1 : 0;
break;
case POWER_SUPPLY_PROP_STATUS:
val->intval = s2mu005_get_charging_status(charger);
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = s2mu005_get_charging_health(charger);
#if EN_TEST_READ
s2mu005_test_read(charger->client);
#endif
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
val->intval = s2mu005_get_input_current_limit(charger->client);
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (charger->charging_current) {
aicr = s2mu005_get_input_current_limit(charger->client);
chg_curr = s2mu005_get_fast_charging_current(charger->client);
val->intval = MINVAL(aicr, chg_curr);
} else
val->intval = 0;
break;
case POWER_SUPPLY_PROP_CURRENT_FULL:
val->intval = s2mu005_get_topoff_current(charger);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
val->intval = s2mu005_get_charge_type(charger->client);
break;
#if defined(CONFIG_BATTERY_SWELLING) || defined(CONFIG_BATTERY_SWELLING_SELF_DISCHARGING)
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
val->intval = charger->pdata->chg_float_voltage;
break;
#endif
case POWER_SUPPLY_PROP_PRESENT:
val->intval = s2mu005_get_batt_present(charger->client);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
val->intval = charger->is_charging;
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_REGULATION:
break;
default:
return -EINVAL;
}
return 0;
}
static int sec_chg_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct s2mu005_charger_data *charger =
container_of(psy, struct s2mu005_charger_data, psy_chg);
int buck_state = ENABLE;
union power_supply_propval value;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
charger->status = val->intval;
break;
/* val->intval : type */
case POWER_SUPPLY_PROP_ONLINE:
charger->cable_type = val->intval;
charger->input_current =
charger->pdata->charging_current[charger->cable_type].input_current_limit;
pr_info("[DEBUG]%s:[BATT] cable_type(%d), input_current(%d)mA\n",
__func__, charger->cable_type, charger->input_current);
if (charger->cable_type != POWER_SUPPLY_TYPE_OTG) {
if (charger->cable_type == POWER_SUPPLY_TYPE_BATTERY ||
charger->cable_type == POWER_SUPPLY_TYPE_UNKNOWN) {
value.intval = 0;
} else {
#if ENABLE_MIVR
s2mu005_set_mivr_level(charger);
#endif /*DISABLE_MIVR*/
value.intval = 1;
}
psy_do_property("s2mu005-fuelgauge", set, POWER_SUPPLY_PROP_ENERGY_AVG, value);
}
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
{
int input_current = val->intval;
if (charger->input_current < input_current) {
input_current = charger->input_current;
}
s2mu005_set_input_current_limit(charger, input_current);
}
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
case POWER_SUPPLY_PROP_CURRENT_NOW:
pr_info("[DEBUG] %s: is_charging %d\n", __func__, charger->is_charging);
charger->charging_current = val->intval;
/* set charging current */
if (charger->is_charging) {
/* decrease the charging current according to siop level */
s2mu005_set_fast_charging_current(charger->client, charger->charging_current);
}
#if EN_TEST_READ
s2mu005_test_read(charger->client);
#endif
break;
case POWER_SUPPLY_PROP_CURRENT_FULL:
charger->topoff_current = val->intval;
if (charger->pdata->chg_eoc_dualpath) {
s2mu005_set_topoff_current(charger->client, 1, val->intval);
s2mu005_set_topoff_current(charger->client, 2, 100);
}
else
s2mu005_set_topoff_current(charger->client, 1, val->intval);
break;
#if defined(CONFIG_BATTERY_SWELLING) || defined(CONFIG_BATTERY_SWELLING_SELF_DISCHARGING)
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
pr_info("[DEBUG]%s: float voltage(%d)\n", __func__, val->intval);
charger->pdata->chg_float_voltage = val->intval;
s2mu005_set_regulation_voltage(charger,
charger->pdata->chg_float_voltage);
break;
#endif
case POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL:
s2mu005_charger_otg_control(charger, val->intval);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
charger->charge_mode = val->intval;
psy_do_property("battery", get, POWER_SUPPLY_PROP_ONLINE, value);
if (value.intval != POWER_SUPPLY_TYPE_OTG) {
pr_info("[DEBUG]%s: CHARGING_ENABLE\n", __func__);
switch (charger->charge_mode) {
case SEC_BAT_CHG_MODE_BUCK_OFF:
buck_state = DISABLE;
case SEC_BAT_CHG_MODE_CHARGING_OFF:
charger->is_charging = false;
break;
case SEC_BAT_CHG_MODE_CHARGING:
charger->is_charging = true;
break;
}
s2mu005_enable_charger_switch(charger, charger->is_charging);
} else {
pr_info("[DEBUG]%s: SKIP CHARGING CONTROL(%d)\n", __func__, value.intval);
}
break;
case POWER_SUPPLY_PROP_CHARGE_ENABLED:
s2mu005_charger_initialize(charger);
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
/* Switch-off charger if JIG is connected
#if defined(CONFIG_SEC_FACTORY)
if (val->intval) {
pr_info("%s: JIG Connection status: %d \n", __func__, val->intval);
s2mu005_enable_charger_switch(charger, false);
}
#endif */
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_REGULATION:
if (val->intval) {
pr_info("%s: Relieve VBUS2BAT\n", __func__);
s2mu005_write_reg(charger->client, 0x26, 0x5D);
}
break;
case POWER_SUPPLY_PROP_AUTHENTIC:
if (val->intval) {
pr_info("%s: Bypass set\n", __func__);
s2mu005_write_reg(charger->client, 0x2A, 0x10);
s2mu005_write_reg(charger->client, 0x23, 0x15);
s2mu005_write_reg(charger->client, 0x24, 0x44);
}
break;
case POWER_SUPPLY_PROP_RESISTANCE:
if(val->intval) {
s2mu005_update_reg(charger->client, S2MU005_REG_SELFDIS_CFG2,
FC_SELF_DISCHG_MASK, FC_SELF_DISCHG_MASK);
} else {
s2mu005_update_reg(charger->client, S2MU005_REG_SELFDIS_CFG2,
0, FC_SELF_DISCHG_MASK);
}
break;
case POWER_SUPPLY_PROP_SCOPE:
charger->fg_mode = val->intval;
break;
default:
return -EINVAL;
}
return 0;
}
static int s2mu005_otg_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = otg_enable_flag;
break;
default:
return -EINVAL;
}
return 0;
}
static int s2mu005_otg_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct s2mu005_charger_data *charger =
container_of(psy, struct s2mu005_charger_data, psy_otg);
union power_supply_propval value;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
value.intval = val->intval;
pr_info("%s: OTG %s\n", __func__, value.intval > 0 ? "on" : "off");
psy_do_property(charger->pdata->charger_name, set,
POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL, value);
break;
default:
return -EINVAL;
}
return 0;
}
/*
ssize_t s2mu003_chg_show_attrs(struct device *dev,
const ptrdiff_t offset, char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct s2mu003_charger_data *charger =
container_of(psy, struct s2mu003_charger_data, psy_chg);
int i = 0;
char *str = NULL;
switch (offset) {
case CHG_REG:
i += scnprintf(buf + i, PAGE_SIZE - i, "%x\n",
charger->reg_addr);
break;
case CHG_DATA:
i += scnprintf(buf + i, PAGE_SIZE - i, "%x\n",
charger->reg_data);
break;
case CHG_REGS:
str = kzalloc(sizeof(char) * 256, GFP_KERNEL);
if (!str)
return -ENOMEM;
// s2mu005_read_regs(charger->client, str);
i += scnprintf(buf + i, PAGE_SIZE - i, "%s\n",
str);
kfree(str);
break;
default:
i = -EINVAL;
break;
}
return i;
}
ssize_t s2mu003_chg_store_attrs(struct device *dev,
const ptrdiff_t offset,
const char *buf, size_t count)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct s2mu003_charger_data *charger =
container_of(psy, struct s2mu003_charger_data, psy_chg);
int ret = 0;
int x = 0;
uint8_t data = 0;
switch (offset) {
case CHG_REG:
if (sscanf(buf, "%x\n", &x) == 1) {
charger->reg_addr = x;
data = s2mu003_reg_read(charger->client,
charger->reg_addr);
charger->reg_data = data;
dev_dbg(dev, "%s: (read) addr = 0x%x, data = 0x%x\n",
__func__, charger->reg_addr, charger->reg_data);
ret = count;
}
break;
case CHG_DATA:
if (sscanf(buf, "%x\n", &x) == 1) {
data = (u8)x;
dev_dbg(dev, "%s: (write) addr = 0x%x, data = 0x%x\n",
__func__, charger->reg_addr, data);
ret = s2mu003_reg_write(charger->client,
charger->reg_addr, data);
if (ret < 0) {
dev_dbg(dev, "I2C write fail Reg0x%x = 0x%x\n",
(int)charger->reg_addr, (int)data);
}
ret = count;
}
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
*/
static void s2mu005_det_bat_work(struct work_struct *work)
{
struct s2mu005_charger_data *charger =
container_of(work, struct s2mu005_charger_data, det_bat_work.work);
u8 val;
union power_supply_propval value;
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS1, &val);
if ((val & DET_BAT_STATUS_MASK) == 0)
{
//value.intval = 0;
psy_do_property("s2mu005-fuelgauge", set, POWER_SUPPLY_PROP_CHARGE_EMPTY, value);
s2mu005_enable_charger_switch(charger, 0);
pr_info("charger-off if battery removed \n");
}
}
/* s2mu005 interrupt service routine */
static irqreturn_t s2mu005_det_bat_isr(int irq, void *data)
{
struct s2mu005_charger_data *charger = data;
queue_delayed_work(charger->charger_wqueue, &charger->det_bat_work, 0);
return IRQ_HANDLED;
}
static irqreturn_t s2mu005_chg_isr(int irq, void *data)
{
struct s2mu005_charger_data *charger = data;
u8 val;
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS0, &val);
pr_info("[DEBUG] %s , %02x \n " , __func__, val);
if ( val & (CHG_STATUS_DONE << CHG_STATUS_SHIFT) )
{
pr_info("add self chg done \n");
/* add chg done code here */
}
return IRQ_HANDLED;
}
#if EN_OVP_IRQ
static void s2mu005_ovp_work(struct work_struct *work)
{
struct s2mu005_charger_data *charger =
container_of(work, struct s2mu005_charger_data, charger_work.work);
u8 val;
union power_supply_propval value;
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS1, &val);
val = (val & VBUS_OVP_MASK) >> VBUS_OVP_SHIFT;
if (val == 0x02) {
charger->ovp = true;
dev_info(charger->dev, "%s: OVP triggered, Vbus status: 0x%x\n", __func__, val);
charger->unhealth_cnt = HEALTH_DEBOUNCE_CNT;
value.intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
psy_do_property("battery", set,
POWER_SUPPLY_PROP_HEALTH, value);
} else if(val == 0x03 || val == 0x05) {
if(charger->ovp) {
dev_info(charger->dev, "%s: Recover from OVP, Vbus status 0x%x \n " , __func__, val);
charger->unhealth_cnt = 0;
charger->ovp = false;
value.intval = POWER_SUPPLY_HEALTH_GOOD;
psy_do_property("battery", set,
POWER_SUPPLY_PROP_HEALTH, value);
}
}
}
#endif
static int s2mu005_charger_parse_dt(struct device *dev,
struct s2mu005_charger_platform_data *pdata)
{
struct device_node *np = of_find_node_by_name(NULL, "s2mu005-charger");
const u32 *p;
int ret, i, len;
/* SC_CTRL11 , SET_OSC_BUCK , Buck switching frequency setting
* 0 : 500kHz
* 1 : 750kHz
* 2 : 1MHz
* 3 : 2MHz
*/
/* ret = of_property_read_u32(np,
"battery,switching_frequency_mode", pdata->switching_frequency_mode);
if (!ret)
pdata->switching_frequency_mode = 1;
pr_info("%s : switching_frequency_mode = %d\n", __func__,
pdata->switching_frequency_mode);
*/
/* SC_CTRL8 , SET_VF_VBAT , Battery regulation voltage setting */
ret = of_property_read_u32(np, "battery,chg_float_voltage",
&pdata->chg_float_voltage);
np = of_find_node_by_name(NULL, "battery");
if (!np) {
pr_err("%s np NULL\n", __func__);
} else {
ret = of_property_read_string(np,
"battery,charger_name", (char const **)&pdata->charger_name);
ret = of_property_read_u32(np, "battery,full_check_type_2nd",
&pdata->full_check_type_2nd);
if (ret)
pr_info("%s : Full check type 2nd is Empty\n", __func__);
pdata->chg_eoc_dualpath = of_property_read_bool(np,
"battery,chg_eoc_dualpath");
pdata->always_enable = of_property_read_bool(np,
"battery,always_enable");
p = of_get_property(np, "battery,input_current_limit", &len);
if (!p)
return 1;
len = len / sizeof(u32);
pdata->charging_current =
kzalloc(sizeof(sec_charging_current_t) * len,
GFP_KERNEL);
for(i = 0; i < len; i++) {
ret = of_property_read_u32_index(np,
"battery,input_current_limit", i,
&pdata->charging_current[i].input_current_limit);
if (ret)
pr_info("%s : Input_current_limit is Empty\n", __func__);
}
}
dev_info(dev, "s2mu005 charger parse dt retval = %d\n", ret);
return ret;
}
/* if need to set s2mu005 pdata */
static struct of_device_id s2mu005_charger_match_table[] = {
{ .compatible = "samsung,s2mu005-charger",},
{},
};
static int s2mu005_charger_probe(struct platform_device *pdev)
{
struct s2mu005_dev *s2mu005 = dev_get_drvdata(pdev->dev.parent);
struct s2mu005_platform_data *pdata = dev_get_platdata(s2mu005->dev);
struct s2mu005_charger_data *charger;
int ret = 0;
union power_supply_propval val;
otg_enable_flag = 0;
pr_info("%s:[BATT] S2MU005 Charger driver probe\n", __func__);
charger = kzalloc(sizeof(*charger), GFP_KERNEL);
if (!charger)
return -ENOMEM;
mutex_init(&charger->io_lock);
charger->dev = &pdev->dev;
charger->client = s2mu005->i2c;
charger->pdata = devm_kzalloc(&pdev->dev, sizeof(*(charger->pdata)),
GFP_KERNEL);
if (!charger->pdata) {
dev_err(&pdev->dev, "Failed to allocate memory\n");
ret = -ENOMEM;
goto err_parse_dt_nomem;
}
ret = s2mu005_charger_parse_dt(&pdev->dev, charger->pdata);
if (ret < 0)
goto err_parse_dt;
platform_set_drvdata(pdev, charger);
if (charger->pdata->charger_name == NULL)
charger->pdata->charger_name = "sec-charger";
charger->psy_chg.name = charger->pdata->charger_name;
charger->psy_chg.type = POWER_SUPPLY_TYPE_UNKNOWN;
charger->psy_chg.get_property = sec_chg_get_property;
charger->psy_chg.set_property = sec_chg_set_property;
charger->psy_chg.properties = sec_charger_props;
charger->psy_chg.num_properties = ARRAY_SIZE(sec_charger_props);
charger->psy_otg.name = "otg";
charger->psy_otg.type = POWER_SUPPLY_TYPE_OTG;
charger->psy_otg.get_property = s2mu005_otg_get_property;
charger->psy_otg.set_property = s2mu005_otg_set_property;
charger->psy_otg.properties = s2mu005_otg_props;
charger->psy_otg.num_properties = ARRAY_SIZE(s2mu005_otg_props);
s2mu005_chg_init(charger);
ret = power_supply_register(&pdev->dev, &charger->psy_chg);
if (ret) {
pr_err("%s: Failed to Register psy_chg\n", __func__);
goto err_power_supply_register;
}
ret = power_supply_register(&pdev->dev, &charger->psy_otg);
if (ret) {
pr_err("%s: Failed to Register otg_chg\n", __func__);
goto err_power_supply_register_otg;
}
charger->charger_wqueue = create_singlethread_workqueue("charger-wq");
if (!charger->charger_wqueue) {
dev_info(charger->dev, "%s: failed to create wq.\n", __func__);
ret = -ESRCH;
goto err_create_wq;
}
INIT_DELAYED_WORK(&charger->charger_work, s2mu005_ovp_work);
INIT_DELAYED_WORK(&charger->det_bat_work, s2mu005_det_bat_work);
/*
* irq request
* if you need to add irq , please refer below code.
*/
charger->irq_det_bat = pdata->irq_base + S2MU005_CHG_IRQ_DET_BAT;
ret = request_threaded_irq(charger->irq_det_bat, NULL,
s2mu005_det_bat_isr, 0 , "det-bat-in-irq", charger);
if(ret < 0) {
dev_err(s2mu005->dev, "%s: Fail to request det bat in IRQ: %d: %d\n",
__func__, charger->irq_det_bat, ret);
goto err_reg_irq;
}
charger->irq_chg = pdata->irq_base + S2MU005_CHG_IRQ_CHG;
ret = request_threaded_irq(charger->irq_chg, NULL,
s2mu005_chg_isr, 0 , "chg-irq", charger);
if(ret < 0) {
dev_err(s2mu005->dev, "%s: Fail to request det bat in IRQ: %d: %d\n",
__func__, charger->irq_chg, ret);
goto err_reg_irq;
}
psy_do_property("s2mu005-fuelgauge", get, POWER_SUPPLY_PROP_SCOPE, val);
charger->fg_mode = val.intval;
#if EN_TEST_READ
s2mu005_test_read(charger->client);
#endif
s2m_acok_register_notifier(&s2m_acok_notifier);
pr_info("%s:[BATT] S2MU005 charger driver loaded OK\n", __func__);
return 0;
err_create_wq:
destroy_workqueue(charger->charger_wqueue);
err_reg_irq:
power_supply_unregister(&charger->psy_otg);
err_power_supply_register_otg:
power_supply_unregister(&charger->psy_chg);
err_power_supply_register:
err_parse_dt:
err_parse_dt_nomem:
mutex_destroy(&charger->io_lock);
kfree(charger);
return ret;
}
static int s2mu005_charger_remove(struct platform_device *pdev)
{
struct s2mu005_charger_data *charger =
platform_get_drvdata(pdev);
power_supply_unregister(&charger->psy_chg);
s2m_acok_unregister_notifier(&s2m_acok_notifier);
mutex_destroy(&charger->io_lock);
kfree(charger);
return 0;
}
#if defined CONFIG_PM
static int s2mu005_charger_suspend(struct device *dev)
{
struct s2mu005_charger_data *charger = dev_get_drvdata(dev);
u8 data = 0;
if (charger->dev_id < 2) {
if (!charger->is_charging && !charger->fg_mode) {
s2mu005_read_reg(charger->client, 0x72, &data);
data |= 0x80;
s2mu005_write_reg(charger->client, 0x72, data);
data = charger->fg_clock + 64 > 0xFF ? 0xFF : charger->fg_clock + 64;
s2mu005_write_reg(charger->client, 0x7B, data);
}
s2mu005_read_reg(charger->client, 0x7B, &data);
pr_info("%s: 0x7B : 0x%x\n", __func__, data);
}
return 0;
}
static int s2mu005_charger_resume(struct device *dev)
{
struct s2mu005_charger_data *charger = dev_get_drvdata(dev);
u8 data;
if (charger->dev_id < 2) {
if (!charger->is_charging && !charger->fg_mode) {
s2mu005_read_reg(charger->client, 0x72, &data);
data &= ~0x80;
s2mu005_write_reg(charger->client, 0x72, data);
s2mu005_write_reg(charger->client, 0x7B, charger->fg_clock);
}
s2mu005_read_reg(charger->client, 0x7B, &data);
pr_info("%s: 0x7B : 0x%x\n", __func__, data);
}
return 0;
}
#else
#define s2mu005_charger_suspend NULL
#define s2mu005_charger_resume NULL
#endif
static void s2mu005_charger_shutdown(struct device *dev)
{
struct s2mu005_charger_data *charger = dev_get_drvdata(dev);
/*
* In case plug TA --> remove battery --> re-insert battery,
* we need to reset FG if SC_INT[0] = 1. However, it can make
* FG reset if plug TA --> power off --> LPM charging.
* To avoid the problem, when power-off sequence by power-key,
* 0x59[3]=0, 0x7C[0]=0 should be set in kernel.
* 0x59[3]=1, 0x7C[0]=1 should be set in bootloader.
*/
s2mu005_update_reg(charger->client, 0x59, 0, 0x01 << 3); /* manual reset disable */
s2mu005_update_reg(charger->client, 0x7C, 0, 0x01 << 0); /* i2c port reset disable */
pr_info("%s: S2MU005 Charger driver shutdown\n", __func__);
if (!(charger->pdata->always_enable)) {
pr_info("%s: turn on charger\n", __func__);
s2mu005_enable_charger_switch(charger, true);
}
}
static SIMPLE_DEV_PM_OPS(s2mu005_charger_pm_ops, s2mu005_charger_suspend,
s2mu005_charger_resume);
static struct platform_driver s2mu005_charger_driver = {
.driver = {
.name = "s2mu005-charger",
.owner = THIS_MODULE,
.of_match_table = s2mu005_charger_match_table,
.pm = &s2mu005_charger_pm_ops,
.shutdown = s2mu005_charger_shutdown,
},
.probe = s2mu005_charger_probe,
.remove = s2mu005_charger_remove,
};
static int __init s2mu005_charger_init(void)
{
int ret = 0;
ret = platform_driver_register(&s2mu005_charger_driver);
return ret;
}
module_init(s2mu005_charger_init);
static void __exit s2mu005_charger_exit(void)
{
platform_driver_unregister(&s2mu005_charger_driver);
}
module_exit(s2mu005_charger_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Samsung Electronics");
MODULE_DESCRIPTION("Charger driver for S2MU005");
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