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android_kernel_samsung_a7y1.../drivers/battery_v2/s2mu005_charger.c
prashantpaddune 671d649fa8 A750FNPUU4CTE3
2020-08-18 17:44:51 +05:30

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/*
* s2mu005_charger.c - S2MU005 Charger Driver
*
* Copyright (C) 2017 Samsung Electronics, Inc.
*
* 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; either version 2
* of the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "include/charger/s2mu005_charger.h"
#include <linux/version.h>
#define ENABLE_MIVR 1
#define EN_OVP_IRQ 1
#define EN_IVR_IRQ 1
#define MINVAL(a, b) ((a <= b) ? a : b)
#define HEALTH_DEBOUNCE_CNT 3
#ifndef EN_TEST_READ
#define EN_TEST_READ 1
#endif
#define ENABLE 1
#define DISABLE 0
#define IVR_WORK_DELAY 0
extern int factory_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 int s2mu005_get_input_current_limit(struct i2c_client *i2c);
static void s2mu005_set_input_current_limit(struct s2mu005_charger_data *charger,
int charging_current);
static void s2mu005_set_input_current_limit_no_lock(struct s2mu005_charger_data *charger,
int charging_current);
#if EN_IVR_IRQ
static void s2mu005_enable_ivr_irq(struct s2mu005_charger_data *charger);
#endif
static void s2mu005_test_read(struct i2c_client *i2c)
{
static int reg_list[] = {
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x2A,
0x51, 0x7E, 0x55, 0x5E, 0x7B, 0x23, 0x26, 0xA7
};
u8 data;
char str[1016] = {0,};
int i = 0, reg_list_size = 0;
reg_list_size = ARRAY_SIZE(reg_list);
for (i = 0; i < reg_list_size; i++) {
s2mu005_read_reg(i2c, reg_list[i], &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", reg_list[i], data);
}
pr_info("[DEBUG][CHG]%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 = power_supply_get_drvdata(psy);
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,
};
bool s2mu005_charger_check_otg_mode(struct s2mu005_charger_data *charger)
{
bool otg_status = false;
u8 chg_ctrl0;
s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL0, &chg_ctrl0);
chg_ctrl0 &= 0xF8;
if (chg_ctrl0 & (1 << S2MU005_CHARGER_REG_MODE_OTG)) {
otg_status = true;
} else {
otg_status = false;
}
pr_debug("[DEBUG]%s: OTG STATUS %d\n", __func__, otg_status);
return otg_status;
}
static void s2mu005_charger_otg_control(struct s2mu005_charger_data *charger,
bool enable)
{
u8 temp;
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);
/* OTG OCP debounce time 100usec->1msec, 0x88[3:2]=11 --> 10 */
s2mu005_update_reg(charger->client, 0x88,
0x8, 0xC);
/* OTG OCP current sence offset */
s2mu005_write_reg(charger->client, 0x98, charger->reg_0x98);
s2mu005_update_reg(charger->client, 0x96, 0x01, 0x01);
#ifdef CONFIG_SEC_FACTORY
if (charger->dev_id >= 4) {
/* set mode to Tx mode */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
5 << REG_MODE_SHIFT, REG_MODE_MASK);
msleep(150);
pr_info("%s: EVT4 OTG Control for factory mode\n", __func__);
/* set mode to Charger mode */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
2 << REG_MODE_SHIFT, REG_MODE_MASK);
}
#endif
/* 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 {
s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL0, &temp);
if ((temp & REG_MODE_MASK) == 4) {
pr_info("%s : already otg on! Skip Turn on OTG\n", __func__);
goto out;
}
/* unmask VMID_INT */
s2mu005_update_reg(charger->client, S2MU005_REG_SC_INT_MASK,
0 << VMID_M_SHIFT, VMID_M_MASK);
#ifndef CONFIG_SEC_FACTORY
/* EN_OTG OFF */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL15,
0 << T_EN_OTG_SHIFT, T_EN_OTG_MASK);
/* OTG SCP disable */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL4,
1 << OTG_OCP_SW_ON_SHIFT, OTG_OCP_SW_ON_MASK);
#endif
/* OTG OCP current sence offset */
s2mu005_read_reg(charger->client, 0x96, &temp);
if (temp & 0x01) {
if (charger->reg_0x98 <= 50)
temp = 0;
else
temp = charger->reg_0x98 - 50;
s2mu005_write_reg(charger->client, 0x98, temp);
s2mu005_update_reg(charger->client, 0x96, 0x00, 0x01);
}
/* set mode to OTG */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
4 << REG_MODE_SHIFT, REG_MODE_MASK);
/* OTG OCP debounce time 100usec->1msec, 0x88[3:2]=10 --> 11 */
s2mu005_update_reg(charger->client, 0x88,
0xC, 0xC);
#ifndef CONFIG_SEC_FACTORY
msleep(5);
/* EN_OTG ON */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL15,
1 << T_EN_OTG_SHIFT, T_EN_OTG_MASK);
/* OTG SCP enable */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL4,
0 << OTG_OCP_SW_ON_SHIFT, OTG_OCP_SW_ON_MASK);
#endif
/* 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,
0 << OTG_OCP_SW_OFF_SHIFT, OTG_OCP_SW_OFF_MASK);
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL4,
1 << OTG_OCP_SW_ON_SHIFT, OTG_OCP_SW_ON_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__);
}
out :
#if EN_TEST_READ
s2mu005_test_read(charger->client);
#endif
power_supply_changed(charger->psy_otg);
}
#if EN_IVR_IRQ
static bool s2mu005_check_slow_charging(struct s2mu005_charger_data *charger,
int input_current)
{
u8 chg_sts;
int ret;
bool slow_charge_prev = charger->slow_charging;
ret = s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS0, &chg_sts);
if (ret < 0)
pr_err("%s: ERROR in reading charger STATUS0\n", __func__);
if (!(chg_sts & 0x80)) {
pr_err("%s: VBUS invalid, not check slow charging\n", __func__);
charger->slow_charging = false;
return charger->slow_charging;
}
pr_info("%s: charger->cable_type %d, input_current %d\n",
__func__, charger->cable_type, input_current);
/* under 400mA considered as slow charging concept for VZW */
if (input_current <= charger->pdata->slow_charging_current &&
charger->cable_type != SEC_BATTERY_CABLE_NONE) {
union power_supply_propval value;
charger->slow_charging = true;
pr_info("%s: slow charging on : input current(%dmA), cable type(%d)\n",
__func__, input_current, charger->cable_type);
if (slow_charge_prev != charger->slow_charging) {
value.intval = POWER_SUPPLY_CHARGE_TYPE_SLOW;
psy_do_property("battery", set,
POWER_SUPPLY_PROP_CHARGE_TYPE, value);
}
} else
charger->slow_charging = false;
return charger->slow_charging;
}
static void reduce_input_current(struct s2mu005_charger_data *charger)
{
int old_input_current, new_input_current;
int data;
old_input_current = s2mu005_get_input_current_limit(charger->client);
new_input_current = (old_input_current > MINIMUM_INPUT_CURRENT + REDUCE_CURRENT_STEP) ?
(old_input_current - REDUCE_CURRENT_STEP) : MINIMUM_INPUT_CURRENT;
if (old_input_current <= new_input_current) {
pr_info("%s: Same or less new input current:(%d, %d, %d)\n", __func__,
old_input_current, new_input_current, charger->input_current);
} else {
pr_info("%s: input currents:(%d, %d, %d)\n", __func__,
old_input_current, new_input_current, charger->input_current);
data = (new_input_current - 100) / 50;
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL2,
data << INPUT_CURRENT_LIMIT_SHIFT,
INPUT_CURRENT_LIMIT_MASK);
charger->input_current = s2mu005_get_input_current_limit(charger->client);
}
charger->ivr_on = true;
}
#endif
static void s2mu005_wdt_control(struct s2mu005_charger_data *charger,
int onoff)
{
u8 temp;
if (onoff > 0) {
s2mu005_read_reg(charger->client, 0x1A, &temp);
temp &= ~0x3;
temp |= 0x2;
s2mu005_write_reg(charger->client, 0x1A, temp);
pr_info("%s : Watchdog Timer Enabled,\n", __func__);
} else {
s2mu005_read_reg(charger->client, 0x1A, &temp);
temp &= ~0x3;
temp |= 0x1;
s2mu005_write_reg(charger->client, 0x1A, temp);
pr_info("%s : Watchdog Timer Disabled,\n", __func__);
}
}
static void s2mu005_enable_charger_switch(struct s2mu005_charger_data *charger,
int onoff)
{
int buck_mode = 0;
u8 ctrl13 = 0;
#if defined(CONFIG_S2MU005_DISABLE_BUCK_MODE)
int original_input_current = 0;
#endif
if (factory_mode || charger->is_otg) {
pr_info("%s: Factory Mode or OTG Skip CHG_EN Control\n", __func__);
return;
}
/* prevent vsys drop, set full current at QBAT */
if (charger->dev_id <= 2) {
s2mu005_set_fast_charging_current(charger->client, 1700);
msleep(20);
}
if (charger->dev_id >= 4)
/* 0: all-off mode, 1: buck-on mode */
/* If BUCK ON mode is not supported the feature below should be enabled */
#if defined(CONFIG_S2MU005_DISABLE_BUCK_MODE)
buck_mode = 0; /* do not support buck only mode */
#else
buck_mode = 1;
#endif
else
buck_mode = 0; /* do not support buck only mode */
if (onoff > 0) {
pr_info("[DEBUG]%s: turn on charger\n", __func__);
if (charger->dev_id < 4) {
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
buck_mode << REG_MODE_SHIFT, REG_MODE_MASK);
}
if (charger->dev_id <= 2) {
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);
if (charger->dev_id <= 2) {
msleep(150);
s2mu005_update_reg(charger->client, 0x2A, 1 << 3, 0x08); /* set async time 20msec recover */
}
/* To prevent entering watchdog issue case we set WDT_CLR to not clear before enabling WDT */
s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL13, &ctrl13);
ctrl13 &= ~0x1;
s2mu005_write_reg(charger->client, S2MU005_CHG_CTRL13, ctrl13); /* wdt not clear, CTRL13 REG bit[0]*/
s2mu005_wdt_control(charger, 1); /* watchdog timer enable */
} else {
pr_info("[DEBUG] %s: turn off charger\n", __func__);
#if defined(CONFIG_S2MU005_DISABLE_BUCK_MODE)
/* work-around for BC1.2 */
if (charger->dev_id >= 4) {
mutex_lock(&charger->charger_mutex);
original_input_current = s2mu005_get_input_current_limit(charger->client);
#if defined(CONFIG_S2MU005_SUPPORT_BC1P2_CERTI)
pr_info("%s: set dp 0V\n", __func__);
s2mu005_write_reg(charger->client, 0x55, 0x00); /* set dp 0V */
#endif
s2mu005_set_input_current_limit_no_lock(charger, 500);
usleep_range(1950, 2050);
s2mu005_set_input_current_limit_no_lock(charger, 100);
usleep_range(1950, 2050);
}
#endif
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0,
buck_mode << REG_MODE_SHIFT, REG_MODE_MASK);
#if defined(CONFIG_S2MU005_DISABLE_BUCK_MODE)
/* work-around for BC1.2 */
if (charger->dev_id >= 4) {
s2mu005_set_input_current_limit_no_lock(charger, original_input_current);
mutex_unlock(&charger->charger_mutex);
}
#endif
s2mu005_wdt_control(charger, 0); /* watchdog timer disable */
}
}
static void s2mu005_set_buck(struct s2mu005_charger_data *charger, int enable)
{
int original_input_current = 0;
if (enable) {
pr_info("[DEBUG]%s: set buck on\n", __func__);
s2mu005_enable_charger_switch(charger, charger->is_charging);
} else {
pr_info("[DEBUG]%s: set buck off (charger off mode)\n", __func__);
/* work-around for BC1.2 */
if (charger->dev_id >= 4) {
mutex_lock(&charger->charger_mutex);
original_input_current = s2mu005_get_input_current_limit(charger->client);
#if defined(CONFIG_S2MU005_SUPPORT_BC1P2_CERTI)
pr_info("%s: set dp 0V\n", __func__);
s2mu005_write_reg(charger->client, 0x55, 0x00); /* set dp 0V */
#endif
s2mu005_set_input_current_limit_no_lock(charger, 500);
usleep_range(1950, 2050);
s2mu005_set_input_current_limit_no_lock(charger, 100);
usleep_range(1950, 2050);
}
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0, 0 << REG_MODE_SHIFT, REG_MODE_MASK);
/* work-around for BC1.2 */
if (charger->dev_id >= 4) {
s2mu005_set_input_current_limit_no_lock(charger, original_input_current);
mutex_unlock(&charger->charger_mutex);
}
}
}
static void s2mu005_set_regulation_voltage(struct s2mu005_charger_data *charger,
int float_voltage)
{
int data;
if (factory_mode)
return;
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 int s2mu005_get_regulation_voltage(struct s2mu005_charger_data *charger)
{
u8 reg_data = 0;
int float_voltage = 0;
s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL8, &reg_data);
reg_data &= 0x7E;
float_voltage = (reg_data >> SET_VF_VBAT_SHIFT) * 10 + 3900;
pr_debug("%s: battery cv reg : 0x%x, float voltage val : %d\n",
__func__, reg_data, float_voltage);
return float_voltage;
}
static void s2mu005_set_input_current_limit(struct s2mu005_charger_data *charger,
int charging_current)
{
int data;
if (factory_mode)
return;
mutex_lock(&charger->charger_mutex);
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);
mutex_unlock(&charger->charger_mutex);
#if EN_TEST_READ
s2mu005_test_read(charger->client);
#endif
}
static void s2mu005_set_input_current_limit_no_lock(struct s2mu005_charger_data *charger,
int charging_current)
{
int data;
if (factory_mode)
return;
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 (factory_mode)
return;
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 s2mu005_charger_data *charger,
int eoc_1st_2nd, int current_limit)
{
int data;
#if defined(CONFIG_S2MU005_VOLT_MODE_TUNING)
union power_supply_propval value;
struct power_supply *psy;
#endif
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(charger->client, S2MU005_CHG_CTRL10, data << FIRST_TOPOFF_CURRENT_SHIFT,
FIRST_TOPOFF_CURRENT_MASK);
#if defined(CONFIG_S2MU005_VOLT_MODE_TUNING)
psy = power_supply_get_by_name("s2mu005-fuelgauge");
if (!psy)
pr_err("%s, fail to set topoff current to FG\n", __func__);
else {
value.intval = current_limit;
power_supply_set_property(psy, POWER_SUPPLY_PROP_CURRENT_FULL, &value);
}
#endif
break;
case 2:
s2mu005_update_reg(charger->client, 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 = charger->pdata->mivr_voltage;
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);
/* OTG OCP current offset */
s2mu005_read_reg(charger->client, 0x98, &charger->reg_0x98);
s2mu005_read_reg(charger->client, 0x96, &temp);
if ((temp & 0x01) == 0x00) {
/* protecting overflow */
if (charger->reg_0x98 > 0xCD)
charger->reg_0x98 = 0xFF;
else
charger->reg_0x98 += 50;
s2mu005_write_reg(charger->client, 0x98, charger->reg_0x98);
s2mu005_update_reg(charger->client, 0x96, 0x01, 0x01);
}
/* s2mu005 : CHG 0xAF[7]=1 for SMPL issue, 0xAF[7]=0 for JIG case */
#if !defined(CONFIG_SEC_FACTORY)
if (charger->dev_id == 3) {
s2mu005_update_reg(charger->client, 0xAF, 1 << 7, 1 << 7);
s2mu005_read_reg(charger->client, 0xAF, &temp);
dev_info(charger->dev, "[DEBUG]%s : 0xAF(0x%x)\n", __func__, temp);
}
#endif
/* ready for self-discharge */
s2mu005_update_reg(charger->client, S2MU005_REG_SELFDIS_CFG3,
SELF_DISCHG_MODE_MASK, SELF_DISCHG_MODE_MASK);
#if !(ENABLE_MIVR)
/* voltage regulatio disable does not exist mu005 */
#endif
s2mu005_read_reg(charger->client, 0x7B, &temp);
if (charger->dev_id <= 2) {
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 90min, watchdog timer 80sec */
temp &= ~0x3F;
temp |= 0x35;
s2mu005_write_reg(charger->client, 0x20, temp);
s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL0, &temp); /* Always CHG_EN is ENABLED */
if (!(temp & 0x10)) {
temp |= 0x10;
s2mu005_write_reg(charger->client, S2MU005_CHG_CTRL0, temp);
dev_info(charger->dev, "%s: CHG CTRL0 CHG EN : 0x%02x\n", __func__, 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);
s2mu005_read_reg(charger->client, 0x29, &temp); /* Disable FC_CHG and PRE_CHG Timers */
temp &= 0x7F;
s2mu005_write_reg(charger->client, 0x29, temp);
/* PD test - OTG load transient protection : CCM operating 0x94[3:0] = 1111 */
if (charger->pdata->pd_authentication) {
s2mu005_update_reg(charger->client, 0x94, 0x0F, 0x0F);
}
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_read_reg(charger->client, 0x20, &temp); /* topoff timer 90min, watchdog timer 80sec */
temp &= ~0x3F;
temp |= 0x35;
s2mu005_write_reg(charger->client, 0x20, temp);
s2mu005_write_reg(charger->client, 0x1A, 0x91);
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 90min */
temp &= ~0x38;
temp |= 0x30;
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, 1, charger->topoff_current);
if (charger->pdata->chg_eoc_dualpath) {
s2mu005_set_topoff_current(charger, 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 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 void s2mu005_wdt_clear(struct s2mu005_charger_data *charger)
{
u8 status3;
u8 ctrl13;
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS3, &status3);
s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL13, &ctrl13);
ctrl13 &= ~0x1;
ctrl13 |= 0x1;
s2mu005_write_reg(charger->client, S2MU005_CHG_CTRL13, ctrl13); /* wdt clear */
status3 &= 0x0f;
if (status3 == 0x05) {
dev_info(&charger->client->dev,
"%s: watchdog error status, enable charger\n", __func__);
s2mu005_enable_charger_switch(charger, charger->is_charging);
}
}
static int s2mu005_get_vsys_charging_health(struct s2mu005_charger_data *charger)
{
u8 data;
int ret;
union power_supply_propval value;
/* add VSYS OVP handling codes for ACT test */
ret = s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS3, &data);
data = data & 0xf;
pr_info("%s: CHG_STASTUS3(0x%x)\n", __func__, data);
switch(data) {
case 0x3:
pr_info("%s: VSYS OVP\n", __func__);
psy_do_property("battery", set, POWER_SUPPLY_EXT_PROP_SYSOVLO, value);
return POWER_SUPPLY_HEALTH_VSYS_OVP;
case 0x4:
pr_info("%s: VSYS UVLO\n", __func__);
return POWER_SUPPLY_HEALTH_GOOD;
default:
return POWER_SUPPLY_HEALTH_GOOD;
}
}
static int s2mu005_get_charging_health(struct s2mu005_charger_data *charger)
{
u8 ret;
int health = POWER_SUPPLY_HEALTH_GOOD;
if (s2mu005_get_vsys_charging_health(charger) == POWER_SUPPLY_HEALTH_VSYS_OVP)
return POWER_SUPPLY_HEALTH_VSYS_OVP;
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS1, &ret);
if (charger->is_charging) {
s2mu005_wdt_clear(charger);
}
if (ret < 0) {
pr_err("%s ERROR in reading health status\n", __func__);
return health;
}
ret = (ret & 0x70) >> 4;
switch (ret) {
case 0x03:
case 0x05:
charger->ovp = false;
charger->unhealth_cnt = 0;
return health;
default:
break;
}
charger->unhealth_cnt++;
if (charger->unhealth_cnt < HEALTH_DEBOUNCE_CNT) {
return health;
}
/* 005 need to check ovp & health count */
charger->unhealth_cnt = HEALTH_DEBOUNCE_CNT;
if (charger->ovp) {
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
return health;
}
health = POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
return health;
}
static int sec_chg_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct s2mu005_charger_data *charger = power_supply_get_drvdata(psy);
int chg_curr, aicr;
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_CONSTANT_CHARGE_CURRENT:
val->intval = s2mu005_get_fast_charging_current(charger->client);
break;
case POWER_SUPPLY_PROP_CURRENT_FULL:
val->intval = s2mu005_get_topoff_current(charger);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
if ((!charger->is_charging) || (charger->cable_type == SEC_BATTERY_CABLE_NONE))
val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
#if EN_IVR_IRQ
else if (s2mu005_check_slow_charging(charger, charger->input_current)) {
val->intval = POWER_SUPPLY_CHARGE_TYPE_SLOW;
pr_info("%s: slow-charging mode\n", __func__);
}
#endif
else
val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
val->intval = s2mu005_get_regulation_voltage(charger);
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = s2mu005_get_batt_present(charger->client);
break;
case POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL:
val->intval = s2mu005_charger_check_otg_mode(charger);
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 = power_supply_get_drvdata(psy);
enum power_supply_ext_property ext_psp = psp;
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->ivr_on = false;
charger->slow_charging = false;
charger->input_current = s2mu005_get_input_current_limit(charger->client);
pr_info("[DEBUG]%s:[BATT] cable_type(%d), input_current(%d)mA\n",
__func__, charger->cable_type, charger->input_current);
if (charger->cable_type != SEC_BATTERY_CABLE_OTG) {
if (charger->cable_type == SEC_BATTERY_CABLE_NONE ||
charger->cable_type == SEC_BATTERY_CABLE_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);
}
#if EN_IVR_IRQ
if (charger->cable_type == SEC_BATTERY_CABLE_NONE) {
/* At cable removal enable IVR IRQ if it was disabled */
if (charger->irq_ivr_enabled == 0) {
u8 reg_data;
charger->irq_ivr_enabled = 1;
/* Unmask IRQ */
s2mu005_update_reg(charger->client, 0x01, 0 << IVR_M_SHIFT, S2MU005_IVR_M);
enable_irq(charger->irq_ivr);
s2mu005_read_reg(charger->client,
S2MU005_REG_SC_INT_MASK, &reg_data);
pr_info("%s : enable ivr : 0x%x\n", __func__, reg_data);
}
}
#endif
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
{
int input_current = val->intval;
s2mu005_set_input_current_limit(charger, input_current);
charger->input_current = val->intval;
}
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 */
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_CONSTANT_CHARGE_CURRENT:
break;
case POWER_SUPPLY_PROP_CURRENT_FULL:
charger->topoff_current = val->intval;
if (charger->pdata->chg_eoc_dualpath) {
s2mu005_set_topoff_current(charger, 1, val->intval);
s2mu005_set_topoff_current(charger, 2, 100);
}
else
s2mu005_set_topoff_current(charger, 1, val->intval);
break;
#if defined(CONFIG_BATTERY_SWELLING)
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 != SEC_BATTERY_CABLE_OTG) {
pr_info("[DEBUG]%s: CHARGING_ENABLE(%d)\n", __func__, charger->charge_mode);
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;
}
if (charger->dev_id >= 4) {
if (buck_state) {
s2mu005_enable_charger_switch(charger, charger->is_charging);
} else {
/* set buck off only if SEC_BAT_CHG_MODE_BUCK_OFF */
s2mu005_set_buck(charger, buck_state);
}
} else {
s2mu005_enable_charger_switch(charger, charger->is_charging);
}
value.intval = charger->is_charging;
psy_do_property("s2mu005-fuelgauge", set,
POWER_SUPPLY_PROP_CHARGING_ENABLED, value);
} else {
pr_info("[DEBUG]%s: SKIP CHARGING CONTROL while OTG(%d)\n",
__func__, value.intval);
}
break;
case POWER_SUPPLY_PROP_CHARGE_ENABLED:
s2mu005_charger_initialize(charger);
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
{
#if !defined(CONFIG_SEC_FACTORY)
u8 temp;
if (charger->dev_id == 3) {
if (val->intval) {
s2mu005_update_reg(charger->client, 0xAF, 0 << 7, 1 << 7);
s2mu005_read_reg(charger->client, 0xAF, &temp);
pr_info("[DEBUG]%s: 0xAF(0x%x) (%d)\n", __func__, temp, val->intval);
}
}
#endif
/* Switch-off charger if JIG is connected */
if (val->intval && factory_mode) {
pr_info("%s: JIG Connection status: %d\n", __func__, val->intval);
s2mu005_enable_charger_switch(charger, false);
}
}
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_REGULATION:
if (val->intval) {
pr_info("%s: Relieve VBUS2BAT\n", __func__);
/* IN2BATT Off */
s2mu005_write_reg(charger->client, 0x26, 0x5D);
}
break;
case POWER_SUPPLY_PROP_AUTHENTIC:
{
u8 temp;
if (val->intval) {
pr_info("%s: Bypass set\n", __func__);
/* JIG Bypass mode enable */
s2mu005_write_reg(charger->client, 0x2A, 0x10);
s2mu005_write_reg(charger->client, 0x23, 0x15);
s2mu005_write_reg(charger->client, 0x24, 0x44);
pr_info("%s: Do additional setting!!!!!\n", __func__);
s2mu005_update_reg(charger->client, 0x0E, 0x01 << 6, 0x01 << 6);
/* SYS SCP function Off */
s2mu005_update_reg(charger->client, 0xA1, 0x01 << 7, 0x01 << 7);
/* VIO reset function Off */
s2mu005_write_reg(charger->client, 0x7C, 0x00);
/* MRSTB 8seconds setting */
s2mu005_write_reg(charger->client, 0x59, 0x0F);
/* BAT2SYS Diode Off */
s2mu005_update_reg(charger->client, 0xAF, 0x00 << 7, 0x01 << 7);
/* Maintain ACOK Low */
s2mu005_write_reg(charger->client, 0x1C, 0x5D);
s2mu005_write_reg(charger->client, 0x26, 0x51);
/* ULDO off */
s2mu005_update_reg(charger->client, 0x5A, 0x00 << 7, 0x01 << 7);
s2mu005_read_reg(charger->client, 0x0E, &temp);
pr_info("[DEBUG]%s: 0x0E(0x%x) (%d)\n", __func__, temp, val->intval);
s2mu005_read_reg(charger->client, 0xA1, &temp);
pr_info("[DEBUG]%s: 0xA1(0x%x) (%d)\n", __func__, temp, val->intval);
s2mu005_read_reg(charger->client, 0x7C, &temp);
pr_info("[DEBUG]%s: 0x7C(0x%x) (%d)\n", __func__, temp, val->intval);
s2mu005_read_reg(charger->client, 0x59, &temp);
pr_info("[DEBUG]%s: 0x59(0x%x) (%d)\n", __func__, temp, val->intval);
s2mu005_read_reg(charger->client, 0xAF, &temp);
pr_info("[DEBUG]%s: 0xAF(0x%x) (%d)\n", __func__, temp, val->intval);
s2mu005_read_reg(charger->client, 0x1C, &temp);
pr_info("[DEBUG]%s: 0x1C(0x%x) (%d)\n", __func__, temp, val->intval);
s2mu005_read_reg(charger->client, 0x26, &temp);
pr_info("[DEBUG]%s: 0x26(0x%x) (%d)\n", __func__, temp, val->intval);
s2mu005_read_reg(charger->client, 0x5A, &temp);
pr_info("[DEBUG]%s: 0x5A(0x%x) (%d)\n", __func__, temp, val->intval);
}
}
break;
#if EN_IVR_IRQ
case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
{
u8 reg_data = 0;
if (!factory_mode) {
s2mu005_enable_ivr_irq(charger);
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS4, &reg_data);
if (reg_data & IVR_STATUS)
queue_delayed_work(charger->charger_wqueue,
&charger->ivr_work, msecs_to_jiffies(IVR_WORK_DELAY));
}
break;
}
#endif
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;
case POWER_SUPPLY_PROP_MAX ... POWER_SUPPLY_EXT_PROP_MAX:
switch (ext_psp) {
case POWER_SUPPLY_EXT_PROP_FUELGAUGE_RESET:
s2mu005_write_reg(charger->client, 0x57, 0xC4);
msleep(500);
s2mu005_write_reg(charger->client, 0x57, 0x04);
msleep(500);
pr_info("%s: reset fuelgauge when surge occur!\n", __func__);
break;
case POWER_SUPPLY_EXT_PROP_CURRENT_MEASURE:
if (val->intval) {
pr_info("%s: Bypass set for current measure\n", __func__);
/*
* Charger/muic interrupt can occur by entering Bypass mode
* Disable all interrupts (mask) for testing current measure.
*/
s2mu005_write_reg(charger->client, S2MU005_REG_SC_INT_MASK, 0xFF);
s2mu005_write_reg(charger->client, S2MU005_REG_MUIC_INT1_MASK, 0xFF);
s2mu005_write_reg(charger->client, S2MU005_REG_MUIC_INT2_MASK, 0xFF);
/* Enter Bypass mode set for current measure */
/* FAST JIG enable */
s2mu005_update_reg(charger->client, 0xA2, 0x01 << 6, 0x01 << 6);
/* set JIG_QBAT On */
s2mu005_update_reg(charger->client, 0xA7, 0x80, 0x80);
s2mu005_update_reg(charger->client, 0x23, 0x0C, 0x0C);
/* VBUS UVLO Low set */
s2mu005_update_reg(charger->client, 0x96, 0x00, 0xC0);
/* JIG_ON_AP enable (enter factory mode) */
s2mu005_update_reg(charger->client, 0x0E, 0x01 << 5, 0x01 << 5);
/* UVLO and IN2BAT Off */
s2mu005_write_reg(charger->client, 0x26, 0xdd);
/* BAT to SYS diode off */
s2mu005_update_reg(charger->client, 0xAF, 0x00, 0x80);
/* EN_JIG_BYPASS_MODE enable */
s2mu005_update_reg(charger->client, 0x0E, 0x01 << 6, 0x01 << 6);
/* USB LDO off */
s2mu005_update_reg(charger->client, S2MU005_REG_PWRSEL_CTRL0,
0 << 7, 1 << 7);
msleep(50);
/* set JIG_QBAT_OFF */
s2mu005_update_reg(charger->client, 0xA7, 0x00, 0x80);
psy_do_property( "s2mu005-fuelgauge", set,
POWER_SUPPLY_EXT_PROP_FUELGAUGE_FACTORY, value);
} else {
pr_info("%s: Bypass exit for current measure\n", __func__);
/* Force QBAT Off */
s2mu005_update_reg(charger->client, 0x1C, 0xC0, 0xC0);
/* Charger Off */
s2mu005_write_reg(charger->client, 0x0E, 0x00);
}
break;
case POWER_SUPPLY_EXT_PROP_FACTORY_VOLTAGE_REGULATION:
/* S2MU005 set VSYS out to 4.0V by 0x0E[7] = 0 */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0, 0 << 7, 1 << 7);
pr_info("%s: factory voltage regulation 4.0V\n", __func__);
break;
case POWER_SUPPLY_EXT_PROP_DISABLE_FACTORY_MODE:
{
u8 temp;
if (val->intval) {
/* Disable Factory Mode */
pr_info("%s: Disable Factory Mode\n", __func__);
/* Buck regulation voltage applied */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0, 1 << 7, 1 << 7);
/* Bat to Sys Diode On */
s2mu005_update_reg(charger->client, 0xAF, 1 << 7, 1 << 7);
/* Disable JIGON, Charger mode */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL0, 0x00, 0x20);
/* Set Float voltage to 4.35V */
s2mu005_write_reg(charger->client, S2MU005_CHG_CTRL8, 0x5A);
/* JIG QBAT On */
s2mu005_update_reg(charger->client, 0xA7, 1 << 7, 1 << 7);
/* SYS OVP enable */
s2mu005_update_reg(charger->client, 0x9E, 1 << 5, 1 << 5);
/* IN to BAT function On */
s2mu005_update_reg(charger->client, 0x26, 0x04, 0x0C);
/* BUCK OSC 750KHz */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL11, 0x08, 0x18);
/* Disable FAST JIG */
s2mu005_update_reg(charger->client, 0xA2, 0 << 6, 1 << 6);
/* VMID Switch Off Enable */
s2mu005_update_reg(charger->client, 0xA1, 0 << 6, 1 << 6);
/* OVP Level Recover */
s2mu005_update_reg(charger->client, S2MU005_CHG_CTRL1, 1 << 2, 1 << 2);
s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL0, &temp);
pr_info("[DEBUG]%s: 0x0E : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, 0xAF, &temp);
pr_info("[DEBUG]%s: 0xAF : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, S2MU005_CHG_CTRL8, &temp);
pr_info("[DEBUG]%s: 0x16 : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, 0xA7, &temp);
pr_info("[DEBUG]%s: 0xA7 : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, 0x9E, &temp);
pr_info("[DEBUG]%s: 0x9E : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, 0x26, &temp);
pr_info("[DEBUG]%s: 0x26 : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, 0x19, &temp);
pr_info("[DEBUG]%s: 0x19 : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, 0xA2, &temp);
pr_info("[DEBUG]%s: 0xA2 : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, 0xA1, &temp);
pr_info("[DEBUG]%s: 0xA1 : 0x%x\n", __func__, temp);
s2mu005_read_reg(charger->client, 0x0F, &temp);
pr_info("[DEBUG]%s: 0x0F : 0x%x\n", __func__, temp);
}
}
break;
default:
return -EINVAL;
}
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 = power_supply_get_drvdata(psy);
union power_supply_propval value;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
value.intval = val->intval;
charger->is_otg = val->intval;
pr_info("%s: OTG %s\n", __func__, value.intval > 0 ? "on" : "off");
s2mu005_charger_otg_control(charger, val->intval);
power_supply_changed(charger->psy_otg);
break;
default:
return -EINVAL;
}
return 0;
}
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)
{
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");
/* Switch off BUCK to immediately power-off the device */
s2mu005_set_buck(charger, 0);
}
}
/* 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;
}
#if 0
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;
}
#endif
#if EN_IVR_IRQ
static void s2mu005_ivr_irq_work(struct work_struct *work)
{
struct s2mu005_charger_data *charger = container_of(work,
struct s2mu005_charger_data, ivr_work.work);
u8 ivr_state;
int ret;
int ivr_cnt = 0;
pr_info("%s:\n", __func__);
if (charger->cable_type == SEC_BATTERY_CABLE_NONE) {
u8 ivr_mask;
pr_info("%s : skip\n", __func__);
s2mu005_read_reg(charger->client, 0x01, &ivr_mask);
if (ivr_mask & 0x04) {
/* Unmask IRQ */
s2mu005_update_reg(charger->client, 0x01, 0 << IVR_M_SHIFT, S2MU005_IVR_M);
}
wake_unlock(&charger->ivr_wake_lock);
return;
}
ret = s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS4, &ivr_state);
if (ret < 0) {
wake_unlock(&charger->ivr_wake_lock);
pr_info("%s : I2C error\n", __func__);
/* Unmask IRQ */
s2mu005_update_reg(charger->client, 0x01, 0 << IVR_M_SHIFT, S2MU005_IVR_M);
return;
}
pr_info("%s: ivr_status 0x0C:0x%02x\n", __func__, ivr_state);
mutex_lock(&charger->charger_mutex);
while (charger->cable_type != SEC_BATTERY_CABLE_NONE) {
reduce_input_current(charger);
if (s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS4, &ivr_state)) {
pr_err("%s: Error reading S2MU005_CHG_STATUS4\n", __func__);
break;
}
pr_info("%s: 0x0C:0x%02x\n", __func__, ivr_state);
while (!(ivr_state & IVR_STATUS)) {
s2mu005_read_reg(charger->client, S2MU005_CHG_STATUS4, &ivr_state);
pr_info("%s: ivr_status 0x0C:0x%02x\n", __func__, ivr_state);
if ((ivr_state & IVR_STATUS) || (ivr_cnt >= 2) ||
(charger->cable_type == SEC_BATTERY_CABLE_NONE)) {
ivr_cnt = 0;
break;
}
ivr_cnt++;
}
if (!(ivr_state & IVR_STATUS)) {
pr_info("%s: EXIT IVR WORK: check value (0x0C:0x%02x, input current:%d)\n", __func__,
ivr_state, charger->input_current);
break;
}
if (s2mu005_get_input_current_limit(charger->client) <= MINIMUM_INPUT_CURRENT)
break;
}
if (charger->ivr_on) {
union power_supply_propval value;
if (is_not_wireless_type(charger->cable_type))
s2mu005_check_slow_charging(charger, charger->input_current);
if ((charger->irq_ivr_enabled == 1) &&
(charger->input_current <= MINIMUM_INPUT_CURRENT) &&
(charger->slow_charging)) {
/* Disable IVR IRQ, can't reduce current any more */
u8 reg_data;
charger->irq_ivr_enabled = 0;
disable_irq_nosync(charger->irq_ivr);
/* Mask IRQ */
s2mu005_update_reg(charger->client, 0x01, S2MU005_IVR_M, S2MU005_IVR_M);
s2mu005_read_reg(charger->client, S2MU005_REG_SC_INT_MASK, &reg_data);
pr_info("%s : disable ivr : 0x%x\n", __func__, reg_data);
}
value.intval = s2mu005_get_input_current_limit(charger->client);
psy_do_property("battery", set,
POWER_SUPPLY_EXT_PROP_AICL_CURRENT, value);
}
if (charger->irq_ivr_enabled == 1) {
/* Unmask IRQ */
s2mu005_update_reg(charger->client, 0x01, 0 << IVR_M_SHIFT, S2MU005_IVR_M);
}
mutex_unlock(&charger->charger_mutex);
wake_unlock(&charger->ivr_wake_lock);
}
static irqreturn_t s2mu005_ivr_isr(int irq, void *data)
{
struct s2mu005_charger_data *charger = data;
pr_info("%s: Start\n", __func__);
wake_lock(&charger->ivr_wake_lock);
/* Mask IRQ */
s2mu005_update_reg(charger->client, 0x01, S2MU005_IVR_M, S2MU005_IVR_M);
queue_delayed_work(charger->charger_wqueue, &charger->ivr_work,
msecs_to_jiffies(IVR_WORK_DELAY));
pr_info("%s: irq(%d)\n", __func__, irq);
return IRQ_HANDLED;
}
static void s2mu005_enable_ivr_irq(struct s2mu005_charger_data *charger)
{
int ret;
ret = request_threaded_irq(charger->irq_ivr, NULL,
s2mu005_ivr_isr, 0, "ivr-irq", charger);
if (ret < 0) {
pr_err("%s: Fail to request IVR_INT IRQ: %d: %d\n",
__func__, charger->irq_ivr, ret);
charger->irq_ivr_enabled = -1;
} else {
/* Unmask IRQ */
s2mu005_update_reg(charger->client, 0x01, 0 << IVR_M_SHIFT, S2MU005_IVR_M);
charger->irq_ivr_enabled = 1;
}
pr_info("%s enabled : %d\n", __func__, charger->irq_ivr_enabled);
}
#endif
#if EN_OVP_IRQ
static void s2mu005_get_ovp_status(struct s2mu005_charger_data *charger)
{
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);
}
}
charger->pending_chg_work = false;
}
static void s2mu005_ovp_work(struct work_struct *work)
{
struct s2mu005_charger_data *charger =
container_of(work, struct s2mu005_charger_data, charger_work.work);
if (!charger->suspended) {
s2mu005_get_ovp_status(charger);
} else {
charger->pending_chg_work = true;
}
}
#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");
int ret;
/* 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);
ret = of_property_read_u32(np, "battery,mivr_voltage",
&pdata->mivr_voltage);
if (ret) {
pr_info("%s : MIVR voltage is Empty\n", __func__);
pdata->mivr_voltage = S2MU005_MIVR_4500MV;
}
ret = of_property_read_u32(np, "charger,slow_charging_current",
&pdata->slow_charging_current);
if (ret) {
pdata->slow_charging_current = SLOW_CHARGING_CURRENT_STANDARD;
pr_info("%s : slow_charging_current is Empty, set default %d\n",
__func__, SLOW_CHARGING_CURRENT_STANDARD);
} else {
pr_info("%s : slow_charging_current is %d \n", __func__, pdata->slow_charging_current);
}
ret = of_property_read_u32(np, "charger,pd_authentication",
&pdata->pd_authentication);
if (ret) {
pdata->pd_authentication = 0;
pr_info("%s : pd_authentication is Empty\n", __func__);
}
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");
}
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 const struct power_supply_desc s2mu005_charger_power_supply_desc = {
.name = "s2mu005-charger",
.type = POWER_SUPPLY_TYPE_UNKNOWN,
.properties = sec_charger_props,
.num_properties = ARRAY_SIZE(sec_charger_props),
.get_property = sec_chg_get_property,
.set_property = sec_chg_set_property,
};
static const struct power_supply_desc otg_power_supply_desc = {
.name = "otg",
.type = POWER_SUPPLY_TYPE_OTG,
.properties = s2mu005_otg_props,
.num_properties = ARRAY_SIZE(s2mu005_otg_props),
.get_property = s2mu005_otg_get_property,
.set_property = s2mu005_otg_set_property,
};
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;
struct power_supply_config charger_cfg = {};
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->charger_mutex);
charger->dev = &pdev->dev;
charger->client = s2mu005->i2c;
charger->ivr_on = false;
charger->slow_charging = false;
charger->input_current = 1000;
charger->cable_type = SEC_BATTERY_CABLE_NONE;
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 = "s2mu005-charger";
s2mu005_chg_init(charger);
charger_cfg.drv_data = charger;
charger->psy_chg = power_supply_register(&pdev->dev, &s2mu005_charger_power_supply_desc, &charger_cfg);
if (!charger->psy_chg) {
dev_err(&pdev->dev, "%s: Failed to Register psy_chg\n", __func__);
goto err_power_supply_register;
}
charger->psy_otg = power_supply_register(&pdev->dev, &otg_power_supply_desc, &charger_cfg);
if (!charger->psy_otg) {
dev_err(&pdev->dev, "%s: Failed to Register psy_otg\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);
#if EN_IVR_IRQ
wake_lock_init(&charger->ivr_wake_lock, WAKE_LOCK_SUSPEND,
"charger-ivr");
INIT_DELAYED_WORK(&charger->ivr_work, s2mu005_ivr_irq_work);
#endif
/*
* 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;
}
#if 0
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;
}
#endif
#if EN_IVR_IRQ
charger->irq_ivr_enabled = -1;
charger->irq_ivr = pdata->irq_base + S2MU005_CHG_IRQ_IVR;
#endif
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
charger->suspended = false;
charger->pending_chg_work = false;
s2m_acok_register_notifier(&s2m_acok_notifier);
pr_info("%s:[BATT] S2MU005 charger driver loaded OK\n", __func__);
return 0;
err_reg_irq:
destroy_workqueue(charger->charger_wqueue);
power_supply_unregister(charger->psy_otg);
err_create_wq:
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->charger_mutex);
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->charger_mutex);
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;
cancel_delayed_work_sync(&charger->charger_work);
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);
}
charger->suspended = true;
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);
}
if (charger->pending_chg_work) {
s2mu005_get_ovp_status(charger);
}
charger->suspended = false;
return 0;
}
#else
#define s2mu005_charger_suspend NULL
#define s2mu005_charger_resume NULL
#endif
static void s2mu005_charger_shutdown(struct platform_device *pdev)
{
struct s2mu005_charger_data *charger = platform_get_drvdata(pdev);
#if !defined(CONFIG_SEC_FACTORY)
#if !defined(CONFIG_S2MU005_INNER_BATTERY)
/*
* 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 */
#endif
/* default value for Bypass mode of factory mode */
s2mu005_write_reg(charger->client, 0x2A, 0x08);
s2mu005_write_reg(charger->client, 0x23, 0x55);
s2mu005_write_reg(charger->client, 0x24, 0x55);
#endif
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,
},
.probe = s2mu005_charger_probe,
.remove = s2mu005_charger_remove,
.shutdown = s2mu005_charger_shutdown,
};
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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