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android_kernel_samsung_a7y1.../drivers/battery/max77833_charger.c
Waldemar Tomme 4e6e413da6 A750FNXXU5CUD3
2023-04-06 22:47:12 +02:00

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/*
* max77833_charger.c
* Samsung MAX77833 Charger Driver
*
* Copyright (C) 2012 Samsung Electronics
*
*
* 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.
*/
#define DEBUG
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/mfd/max77833-private.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/power_supply.h>
#include <linux/mfd/max77833.h>
#ifdef CONFIG_USB_HOST_NOTIFY
#include <linux/usb_notify.h>
#endif
#define ENABLE 1
#define DISABLE 0
static enum power_supply_property max77833_charger_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
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_FULL_DESIGN,
POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL,
POWER_SUPPLY_PROP_USB_HC,
#if defined(CONFIG_BATTERY_SWELLING) || defined(CONFIG_BATTERY_SWELLING_SELF_DISCHARGING)
POWER_SUPPLY_PROP_VOLTAGE_MAX,
#endif
#if defined(CONFIG_AFC_CHARGER_MODE)
POWER_SUPPLY_PROP_AFC_CHARGER_MODE,
#endif
POWER_SUPPLY_PROP_CHARGE_NOW,
};
static struct device_attribute max77833_charger_attrs[] = {
MAX77833_CHARGER_ATTR(chip_id),
};
static void max77833_charger_initialize(struct max77833_charger_data *charger);
static int max77833_get_vbus_state(struct max77833_charger_data *charger);
static int max77833_get_charger_state(struct max77833_charger_data *charger);
static void max77833_set_charger_state(struct max77833_charger_data *charger,
int enable);
static bool max77833_charger_unlock(struct max77833_charger_data *charger)
{
u8 reg_data;
u8 chgprot;
int retry_cnt = 0;
bool need_init = false;
do {
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_PROTECT, &reg_data);
chgprot = reg_data & 0x03;
if (chgprot != 0x03) {
pr_err("%s: unlock err, chgprot(0x%x), retry(%d)\n",
__func__, chgprot, retry_cnt);
max77833_write_reg(charger->i2c, MAX77833_CHG_REG_PROTECT,
0x03);
need_init = true;
msleep(20);
} else {
pr_debug("%s: unlock success, chgprot(0x%x)\n",
__func__, chgprot);
break;
}
} while ((chgprot != 0x03) && (++retry_cnt < 10));
return need_init;
}
static void check_charger_unlock_state(struct max77833_charger_data *charger)
{
bool need_reg_init;
pr_debug("%s\n", __func__);
need_reg_init = max77833_charger_unlock(charger);
if (need_reg_init) {
pr_err("%s: charger locked state, reg init\n", __func__);
max77833_charger_initialize(charger);
}
}
static void max77833_test_read(struct max77833_charger_data *charger)
{
u8 data = 0;
u32 addr = 0;
for (addr = 0x81; addr <= 0x9D; addr++) {
max77833_read_reg(charger->i2c, addr, &data);
pr_debug("MAX77833 addr : 0x%02x data : 0x%02x\n", addr, data);
}
}
static int max77833_get_vbus_state(struct max77833_charger_data *charger)
{
u8 reg_data;
union power_supply_propval value;
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_00, &reg_data);
psy_do_property("battery", get, POWER_SUPPLY_PROP_ONLINE,
value);
if (value.intval == POWER_SUPPLY_TYPE_WIRELESS)
reg_data = ((reg_data & MAX77833_WCIN_DTLS) >>
MAX77833_WCIN_DTLS_SHIFT);
else
reg_data = ((reg_data & MAX77833_CHGIN_DTLS) >>
MAX77833_CHGIN_DTLS_SHIFT);
switch (reg_data) {
case 0x00:
pr_info("%s: VBUS is invalid. CHGIN < CHGIN_UVLO\n",
__func__);
break;
case 0x01:
pr_info("%s: VBUS is invalid. CHGIN < MBAT+CHGIN2SYS" \
"and CHGIN > CHGIN_UVLO\n", __func__);
break;
case 0x02:
pr_info("%s: VBUS is invalid. CHGIN > CHGIN_OVLO",
__func__);
break;
case 0x03:
pr_info("%s: VBUS is valid. CHGIN < CHGIN_OVLO", __func__);
break;
default:
break;
}
return reg_data;
}
static int max77833_get_charger_state(struct max77833_charger_data *charger)
{
int status = POWER_SUPPLY_STATUS_UNKNOWN;
u8 reg_data;
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_01, &reg_data);
pr_info("%s : charger status (0x%02x)\n", __func__, reg_data);
reg_data &= 0x0f;
switch (reg_data)
{
case 0x00:
case 0x01:
case 0x02:
status = POWER_SUPPLY_STATUS_CHARGING;
break;
case 0x03:
case 0x04:
status = POWER_SUPPLY_STATUS_FULL;
break;
case 0x05:
case 0x06:
case 0x07:
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
break;
case 0x08:
case 0xA:
case 0xB:
status = POWER_SUPPLY_STATUS_DISCHARGING;
break;
default:
status = POWER_SUPPLY_STATUS_UNKNOWN;
break;
}
return (int)status;
}
static int max77833_get_charging_health(struct max77833_charger_data *charger)
{
int state;
int vbus_state;
int retry_cnt;
u8 chg_dtls_00, chg_dtls, reg_data;
u8 chg_cnfg_00, chg_cnfg_04 ,chg_cnfg_05, chg_cnfg_06, chg_cnfg_16, chg_cnfg_18;
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_01, &reg_data);
reg_data = ((reg_data & MAX77833_BAT_DTLS) >> MAX77833_BAT_DTLS_SHIFT);
pr_info("%s: reg_data(0x%x)\n", __func__, reg_data);
switch (reg_data) {
case 0x00:
pr_info("%s: No battery and the charger is suspended\n",
__func__);
state = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
break;
case 0x01:
pr_info("%s: battery is okay "
"but its voltage is low(~VPQLB)\n", __func__);
state = POWER_SUPPLY_HEALTH_GOOD;
break;
case 0x02:
pr_info("%s: battery dead\n", __func__);
state = POWER_SUPPLY_HEALTH_DEAD;
break;
case 0x03:
state = POWER_SUPPLY_HEALTH_GOOD;
break;
case 0x04:
pr_info("%s: battery is okay" \
"but its voltage is low\n", __func__);
state = POWER_SUPPLY_HEALTH_GOOD;
break;
case 0x07:
pr_info("%s: battery voltage information not available\n",
__func__);
state = POWER_SUPPLY_HEALTH_UNKNOWN;
break;
default:
pr_info("%s: battery unknown : 0x%d\n", __func__, reg_data);
state = POWER_SUPPLY_HEALTH_UNKNOWN;
break;
}
if (state == POWER_SUPPLY_HEALTH_GOOD) {
union power_supply_propval value;
psy_do_property("battery", get,
POWER_SUPPLY_PROP_HEALTH, value);
/* VBUS OVP state return battery OVP state */
vbus_state = max77833_get_vbus_state(charger);
/* read CHG_DTLS and detecting battery terminal error */
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_01, &chg_dtls);
chg_dtls = ((chg_dtls & MAX77833_CHG_DTLS) >>
MAX77833_CHG_DTLS_SHIFT);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_00, &chg_cnfg_00);
/* print the log at the abnormal case */
if((charger->is_charging == 1) && (chg_dtls & 0x08)) {
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_00, &chg_dtls_00);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_04, &chg_cnfg_04);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_05, &chg_cnfg_05);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_06, &chg_cnfg_06);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_16, &chg_cnfg_16);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_18, &chg_cnfg_18);
pr_info("%s: CHG_DTLS_00(0x%x), CHG_DTLS_01(0x%x), CHG_CNFG_00(0x%x)\n",
__func__, chg_dtls_00, chg_dtls, chg_cnfg_00);
pr_info("%s: CHG_CNFG_04(0x%x), CHG_CNFG_05(0x%x), CHG_CNFG_06(0x%x)\n",
__func__, chg_cnfg_04, chg_cnfg_05, chg_cnfg_06);
pr_info("%s: CHG_CNFG_16(0x%x), CHG_CNFG_18(0x%x)\n",
__func__, chg_cnfg_16, chg_cnfg_18);
max77833_set_charger_state(charger, 0);
max77833_set_charger_state(charger, 1);
}
pr_info("%s: vbus_state : 0x%d, chg_dtls : 0x%d\n", __func__, vbus_state, chg_dtls);
/* OVP is higher priority */
if (vbus_state == 0x02) { /* CHGIN_OVLO */
pr_info("%s: vbus ovp\n", __func__);
state = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
if (charger->cable_type == POWER_SUPPLY_TYPE_WIRELESS) {
retry_cnt = 0;
do {
msleep(50);
vbus_state = max77833_get_vbus_state(charger);
} while((retry_cnt++ < 2) && (vbus_state == 0x02));
if (vbus_state == 0x02) {
state = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
pr_info("%s: wpc and over-voltage\n", __func__);
} else
state = POWER_SUPPLY_HEALTH_GOOD;
}
} else if (((vbus_state == 0x0) || (vbus_state == 0x01)) && (chg_dtls & 0x08) && \
(chg_cnfg_00 & MAX77833_MODE_BUCK) && \
(chg_cnfg_00 & MAX77833_MODE_CHGR) && \
(charger->cable_type != POWER_SUPPLY_TYPE_WIRELESS)) {
pr_info("%s: vbus is under\n", __func__);
state = POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
} else if ((value.intval == POWER_SUPPLY_HEALTH_UNDERVOLTAGE) && \
((vbus_state == 0x0) || (vbus_state == 0x01)) && \
(charger->cable_type != POWER_SUPPLY_TYPE_WIRELESS)) {
pr_info("%s: keep under-voltage\n", __func__);
state = POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
}
}
return (int)state;
}
static u8 max77833_get_float_voltage_data(int float_voltage)
{
int voltage = 3000;
int i;
for (i = 0; voltage <= 4500; i++) {
if (float_voltage <= voltage)
break;
voltage += 10;
}
return i;
}
static int max77833_get_input_current(struct max77833_charger_data *charger)
{
u8 reg_data;
int get_current = 0;
if (charger->cable_type == POWER_SUPPLY_TYPE_WIRELESS) {
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_17, &reg_data);
/* AND operation for removing the formal 2bit */
reg_data = reg_data & 0x7F;
if (reg_data <= 0x3)
get_current = 75;
else if (reg_data >= 0x50)
get_current = 2000;
else
get_current = reg_data * 25;
} else {
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_16, &reg_data);
/* AND operation for removing the formal 1bit */
if (reg_data <= 0x3)
get_current = 75;
else if (reg_data >= 0xA0)
get_current = 4000;
else
get_current = reg_data * 25;
}
return get_current;
}
static bool max77833_check_battery(struct max77833_charger_data *charger)
{
u8 reg_data;
u8 reg_data2;
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_OK, &reg_data);
pr_info("%s : CHG_INT_OK(0x%x)\n", __func__, reg_data);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_00, &reg_data2);
pr_info("%s : CHG_DETAILS00(0x%x)\n", __func__, reg_data2);
if ((reg_data & MAX77833_BATP_OK) ||
!(reg_data2 & MAX77833_BATP_DTLS))
return true;
else
return false;
}
static void max77833_set_buck(struct max77833_charger_data *charger,
int enable)
{
u8 reg_data;
if (enable) {
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
CHG_CNFG_00_BUCK_MASK, CHG_CNFG_00_BUCK_MASK);
} else {
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
0, CHG_CNFG_00_BUCK_MASK);
}
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00, &reg_data);
pr_debug("%s : CHG_CNFG_00(0x%02x)\n", __func__, reg_data);
}
static void max77833_check_slow_charging(struct max77833_charger_data *charger,
int input_current)
{
/* under 400mA considered as slow charging concept for VZW */
if (input_current <= SLOW_CHARGING_CURRENT_STANDARD &&
charger->cable_type != POWER_SUPPLY_TYPE_BATTERY) {
union power_supply_propval value;
charger->aicl_on = true;
pr_info("%s: slow charging on : input current(%dmA), cable type(%d)\n",
__func__, input_current, charger->cable_type);
psy_do_property("battery", set,
POWER_SUPPLY_PROP_CHARGE_TYPE, value);
}
else
charger->aicl_on = false;
}
static void max77833_set_input_current(struct max77833_charger_data *charger,
int input_current)
{
u8 set_reg, reg_data;
mutex_lock(&charger->charger_mutex);
if (charger->cable_type == POWER_SUPPLY_TYPE_WIRELESS) {
set_reg = MAX77833_CHG_REG_CNFG_17;
max77833_read_reg(charger->i2c,
set_reg, &reg_data);
reg_data &= ~MAX77833_CHG_WCIN_LIM;
} else {
set_reg = MAX77833_CHG_REG_CNFG_16;
max77833_read_reg(charger->i2c,
set_reg, &reg_data);
}
if (input_current <= 0)
max77833_set_buck(charger, DISABLE);
else {
max77833_set_buck(charger, ENABLE);
}
if (!input_current) {
max77833_write_reg(charger->i2c,
set_reg, reg_data);
} else if(charger->cable_type == POWER_SUPPLY_TYPE_WIRELESS) {
if (input_current >= 2000)
reg_data = 0x50;
else
reg_data = input_current / 25;
max77833_write_reg(charger->i2c,
set_reg, reg_data);
} else {
input_current = (input_current > charger->charging_current_max) ?
charger->charging_current_max : input_current;
if (input_current >= 4000)
reg_data = 0xA0;
else
reg_data = input_current / 25;
max77833_write_reg(charger->i2c,
set_reg, reg_data);
}
mutex_unlock(&charger->charger_mutex);
pr_info("[%s] REG(0x%02x) DATA(0x%02x)\n",
__func__, set_reg, reg_data);
}
static void max77833_set_charge_current(struct max77833_charger_data *charger,
int fast_charging_current)
{
int curr_step = 50;
u8 reg_data;
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_05, &reg_data);
if (!fast_charging_current) {
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_05, 0x00);
} else {
reg_data = fast_charging_current / curr_step;
max77833_write_reg(charger->i2c,MAX77833_CHG_REG_CNFG_05, reg_data);
}
pr_info("[%s] REG(0x%02x) DATA(0x%02x), CURRENT(%d)\n",
__func__, MAX77833_CHG_REG_CNFG_05,
reg_data, fast_charging_current);
}
static int max77833_check_aicl_state(struct max77833_charger_data *charger)
{
u8 aicl_state;
if (!max77833_read_reg(charger->i2c, MAX77833_CHG_REG_INT_OK, &aicl_state)) {
pr_info("%s aicl state \n", __func__);
return !(aicl_state & 0x80);
}
return 0;
}
static void max77833_set_current(struct max77833_charger_data *charger)
{
int current_now = charger->charging_current,
current_max = charger->charging_current_max;
int usb_charging_current = charger->pdata->charging_current[
POWER_SUPPLY_TYPE_USB].fast_charging_current;
pr_info("%s: siop_level=%d, afc_detec=%d, current_max=%d, current_now=%d\n",
__func__, charger->siop_level, charger->afc_detect, current_max, current_now);
if (charger->is_charging) {
/* decrease the charging current according to siop level */
current_now = current_now * charger->siop_level / 100;
/* do forced set charging current */
if (current_now > 0 && current_now < usb_charging_current)
current_now = usb_charging_current;
if (charger->siop_level < 100) {
if (charger->cable_type == POWER_SUPPLY_TYPE_WIRELESS) {
current_max = SIOP_WIRELESS_INPUT_LIMIT_CURRENT;
if (current_now > SIOP_WIRELESS_CHARGING_LIMIT_CURRENT)
current_now = SIOP_WIRELESS_CHARGING_LIMIT_CURRENT;
} else if (charger->cable_type == POWER_SUPPLY_TYPE_HV_MAINS ||
charger->cable_type == POWER_SUPPLY_TYPE_HV_ERR){
if (current_max > SIOP_HV_INPUT_LIMIT_CURRENT)
current_max = SIOP_HV_INPUT_LIMIT_CURRENT;
if (current_now > SIOP_HV_CHARGING_LIMIT_CURRENT)
current_now = SIOP_HV_CHARGING_LIMIT_CURRENT;
} else {
if (current_max > SIOP_INPUT_LIMIT_CURRENT)
current_max = SIOP_INPUT_LIMIT_CURRENT;
if (current_now > SIOP_CHARGING_LIMIT_CURRENT)
current_now = SIOP_CHARGING_LIMIT_CURRENT;
}
}
}
pr_info("%s: siop_level=%d, afc_detec=%d, current_max=%d, current_now=%d\n",
__func__, charger->siop_level, charger->afc_detect, current_max, current_now);
if (max77833_check_aicl_state(charger)) {
wake_lock(&charger->aicl_wake_lock);
queue_delayed_work(charger->wqueue, &charger->aicl_work,
msecs_to_jiffies(50));
}
max77833_set_charge_current(charger, current_now);
max77833_set_input_current(charger, current_max);
max77833_test_read(charger);
}
static void afc_detect_work(struct work_struct *work)
{
struct max77833_charger_data *charger = container_of(work,
struct max77833_charger_data,
afc_work.work);
pr_info("%s\n", __func__);
if ((charger->cable_type == POWER_SUPPLY_TYPE_MAINS) && charger->is_charging && charger->afc_detect) {
charger->afc_detect = false;
if (charger->charging_current_max >= INPUT_CURRENT_TA) {
charger->charging_current_max = charger->pdata->charging_current[
POWER_SUPPLY_TYPE_MAINS].input_current_limit;
}
pr_info("%s: current_max(%d)\n", __func__, charger->charging_current_max);
max77833_set_current(charger);
}
}
static void max77833_set_topoff_current(struct max77833_charger_data *charger,
int termination_current,
int termination_time)
{
int curr_base, curr_step;
u8 reg_data;
curr_base = 125;
curr_step = 75;
if (termination_current < curr_base)
termination_current = curr_base;
else if (termination_current > 650)
termination_current = 650;
reg_data = (termination_current - curr_base) / curr_step;
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_02,
reg_data, 0x7);
pr_info("%s: reg_data(0x%02x), topoff(%d)\n",
__func__, reg_data, termination_current);
}
static void max77833_set_charger_state(struct max77833_charger_data *charger,
int enable)
{
u8 reg_data;
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00, &reg_data);
if (enable) {
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
CHG_CNFG_00_CHG_MASK, CHG_CNFG_00_CHG_MASK);
} else {
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
0, CHG_CNFG_00_CHG_MASK);
}
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00, &reg_data);
pr_debug("%s : CHG_CNFG_00(0x%02x)\n", __func__, reg_data);
}
static void reduce_input_current(struct max77833_charger_data *charger, int cur)
{
u8 set_value;
unsigned int min_input_current = 0;
min_input_current = MINIMUM_INPUT_CURRENT;
if (!max77833_read_reg(charger->i2c, MAX77833_CHG_REG_CNFG_16, &set_value)) {
if ((set_value <= (min_input_current / charger->input_curr_limit_step)) ||
(set_value <= (cur / charger->input_curr_limit_step)))
return;
set_value -= (cur / charger->input_curr_limit_step);
set_value = (set_value < (min_input_current / charger->input_curr_limit_step)) ?
(min_input_current / charger->input_curr_limit_step) : set_value;
max77833_write_reg(charger->i2c, MAX77833_CHG_REG_CNFG_16, set_value);
charger->charging_current_max = max77833_get_input_current(charger);
pr_info("%s: set current: reg:(0x%x), val:(0x%x), input_current(%d)\n",
__func__, MAX77833_CHG_REG_CNFG_16, set_value, charger->charging_current_max);
}
}
static void max77833_charger_function_control(
struct max77833_charger_data *charger)
{
u8 chg_cnfg_00 = 0;
union power_supply_propval value;
union power_supply_propval chg_mode;
union power_supply_propval swelling_state;
union power_supply_propval battery_status;
psy_do_property("battery", get, POWER_SUPPLY_PROP_ONLINE, value);
psy_do_property("battery", get, POWER_SUPPLY_PROP_CHARGE_COUNTER_SHADOW, battery_status);
/* OTG_EN control */
if (charger->pdata->otg_en) {
if (battery_status.intval == POWER_SUPPLY_TYPE_USB) {
gpio_direction_output(charger->pdata->otg_en, 1);
pr_info("%s: OTG_EN set to HIGH. cable(%d)\n", __func__, value.intval);
} else {
if (value.intval != POWER_SUPPLY_TYPE_WIRELESS) {
gpio_direction_output(charger->pdata->otg_en, 0);
pr_info("%s: OTG_EN set to LOW. cable(%d)\n", __func__, value.intval);
}
}
}
psy_do_property("battery", get, POWER_SUPPLY_PROP_HEALTH, value);
pr_info("####%s####\n", __func__);
if (charger->cable_type == POWER_SUPPLY_TYPE_BATTERY ||
charger->cable_type == POWER_SUPPLY_TYPE_OTG) {
charger->is_charging = false;
charger->afc_detect = false;
charger->aicl_on = false;
charger->is_mdock = false;
charger->charging_current = 0;
if ((charger->status == POWER_SUPPLY_STATUS_DISCHARGING) ||
(value.intval == POWER_SUPPLY_HEALTH_UNSPEC_FAILURE) ||
(value.intval == POWER_SUPPLY_HEALTH_OVERHEATLIMIT)) {
charger->charging_current_max =
((value.intval == POWER_SUPPLY_HEALTH_UNSPEC_FAILURE) || \
(value.intval == POWER_SUPPLY_HEALTH_OVERHEATLIMIT)) ?
0 : charger->pdata->charging_current[POWER_SUPPLY_TYPE_USB].input_current_limit;
}
if (charger->cable_type == POWER_SUPPLY_TYPE_OTG) {
/* OTG_EN set to HIGH */
if (charger->pdata->otg_en) {
gpio_direction_output(charger->pdata->otg_en, 1);
pr_info("%s: OTG_EN set to HIGH. cable type OTG\n", __func__);
}
chg_cnfg_00 |= (CHG_CNFG_00_OTG_MASK
| CHG_CNFG_00_BOOST_MASK);
chg_cnfg_00 &= ~(CHG_CNFG_00_BUCK_MASK);
max77833_update_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_00,
chg_cnfg_00,
(CHG_CNFG_00_OTG_MASK |
CHG_CNFG_00_BOOST_MASK |
CHG_CNFG_00_BUCK_MASK));
} else {
if (charger->status == POWER_SUPPLY_STATUS_DISCHARGING) { /* cable type battery + discharging */
max77833_write_reg(charger->i2c, MAX77833_CHG_REG_CNFG_07, 0x00);
pr_info("%s: Vsysmin set to 3.0V. cable(%d)\n", __func__, charger->cable_type);
}
psy_do_property("battery", get, POWER_SUPPLY_PROP_CHARGE_COUNTER_SHADOW, value);
/* OTG_EN set to LOW */
if (charger->pdata->otg_en && value.intval != POWER_SUPPLY_TYPE_USB) {
gpio_direction_output(charger->pdata->otg_en, 0);
pr_info("%s: OTG_EN set to LOW. cable type BATTERY\n", __func__);
}
chg_cnfg_00 &= ~(CHG_CNFG_00_CHG_MASK
| CHG_CNFG_00_OTG_MASK
| CHG_CNFG_00_BOOST_MASK);
max77833_update_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_00,
chg_cnfg_00,
(CHG_CNFG_00_CHG_MASK |
CHG_CNFG_00_OTG_MASK |
CHG_CNFG_00_BOOST_MASK));
}
} else {
if (charger->cable_type == POWER_SUPPLY_TYPE_HMT_CONNECTED)
charger->is_charging = false;
else
charger->is_charging = true;
charger->afc_detect = false;
charger->charging_current_max =
charger->pdata->charging_current
[charger->cable_type].input_current_limit;
charger->charging_current =
charger->pdata->charging_current
[charger->cable_type].fast_charging_current;
if (charger->is_mdock) { /* if mdock was alread inserted, then check OTG, or NOTG state */
if (charger->cable_type == POWER_SUPPLY_TYPE_SMART_NOTG) {
charger->charging_current =
charger->pdata->charging_current
[POWER_SUPPLY_TYPE_MDOCK_TA].fast_charging_current;
charger->charging_current_max =
charger->pdata->charging_current
[POWER_SUPPLY_TYPE_MDOCK_TA].input_current_limit;
} else if (charger->cable_type == POWER_SUPPLY_TYPE_SMART_OTG) {
charger->charging_current =
charger->pdata->charging_current
[POWER_SUPPLY_TYPE_MDOCK_TA].fast_charging_current - 500;
charger->charging_current_max =
charger->pdata->charging_current
[POWER_SUPPLY_TYPE_MDOCK_TA].input_current_limit - 500;
}
} else { /*if mdock wasn't inserted, then check mdock state*/
if (charger->cable_type == POWER_SUPPLY_TYPE_MDOCK_TA)
charger->is_mdock = true;
}
if (charger->cable_type == POWER_SUPPLY_TYPE_MAINS) {
charger->afc_detect = true;
charger->charging_current_max = INPUT_CURRENT_TA;
queue_delayed_work(charger->wqueue, &charger->afc_work, msecs_to_jiffies(2000));
wake_lock_timeout(&charger->afc_wake_lock, HZ * 3);
}
}
pr_info("charging = %d, fc = %d, il = %d, t1 = %d, t2 = %d, cable = %d\n",
charger->is_charging,
charger->charging_current,
charger->charging_current_max,
charger->pdata->charging_current[charger->cable_type].full_check_current_1st,
charger->pdata->charging_current[charger->cable_type].full_check_current_2nd,
charger->cable_type);
if (charger->pdata->full_check_type_2nd == SEC_BATTERY_FULLCHARGED_CHGPSY) {
psy_do_property("battery", get,
POWER_SUPPLY_PROP_CHARGE_NOW,
chg_mode);
#if defined(CONFIG_BATTERY_SWELLING)
psy_do_property("battery", get,
POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
swelling_state);
#else
swelling_state.intval = 0;
#endif
if (chg_mode.intval == SEC_BATTERY_CHARGING_2ND || swelling_state.intval) {
max77833_set_charger_state(charger, 0);
max77833_set_topoff_current(charger,
charger->pdata->charging_current[
charger->cable_type].full_check_current_2nd,
(70 * 60));
} else {
max77833_set_topoff_current(charger,
charger->pdata->charging_current[
charger->cable_type].full_check_current_1st,
(70 * 60));
}
} else {
max77833_set_topoff_current(charger,
charger->pdata->charging_current[
charger->cable_type].full_check_current_1st,
charger->pdata->charging_current[
charger->cable_type].full_check_current_2nd);
}
max77833_set_charger_state(charger, charger->is_charging);
pr_info("charging = %d, fc = %d, il = %d, t1 = %d, t2 = %d, cable = %d\n",
charger->is_charging,
charger->charging_current,
charger->charging_current_max,
charger->pdata->charging_current[charger->cable_type].full_check_current_1st,
charger->pdata->charging_current[charger->cable_type].full_check_current_2nd,
charger->cable_type);
max77833_test_read(charger);
}
static void max77833_charger_initialize(struct max77833_charger_data *charger)
{
u8 reg_data;
pr_info("%s\n", __func__);
/* unmasked: CHGIN_I, WCIN_I, BATP_I, BYP_I */
/*max77833_write_reg(charger->i2c, MAX77833_CHG_REG_INT_MASK, 0x9a);*/
/* unlock charger setting protect */
reg_data = 0x03;
max77833_write_reg(charger->i2c, MAX77833_CHG_REG_PROTECT, reg_data);
/*
* fast charge timer disable
* restart threshold disable
* pre-qual charge enable(default)
*/
reg_data = (0x03 << 4);
max77833_write_reg(charger->i2c, MAX77833_CHG_REG_CNFG_04, reg_data);
/*
* top off current 125mA
* top off timer 70min
* otg current limit 1200mA
*/
reg_data = 0xB8;
max77833_write_reg(charger->i2c, MAX77833_CHG_REG_CNFG_02, reg_data);
/*
* cv voltage 4.2V or 4.35V
* MINVSYS 3.6V(default)
*/
reg_data = max77833_get_float_voltage_data(charger->pdata->chg_float_voltage);
max77833_write_word(charger->i2c, MAX77833_CHG_REG_CNFG_06, reg_data);
pr_info("%s: battery cv voltage 0x%x\n", __func__, reg_data);
/*
* CHGIN falling AICL threshold 4.3V(default)
*/
reg_data = 0x03;
max77833_write_word(charger->i2c, MAX77833_CHG_REG_CNFG_11, reg_data);
pr_info("%s: CHGIN AICL threshold 0x%x\n", __func__, reg_data);
/* SYS_OCT_ACT = 0 */
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_15, 0, 1);
max77833_test_read(charger);
}
#if defined(CONFIG_BATTERY_SWELLING) || defined(CONFIG_BATTERY_SWELLING_SELF_DISCHARGING)
static void max77833_set_float_voltage(struct max77833_charger_data *charger, int float_voltage)
{
u8 reg_data = 0;
reg_data = max77833_get_float_voltage_data(float_voltage);
max77833_write_word(charger->i2c, MAX77833_CHG_REG_CNFG_06, reg_data);
charger->pdata->chg_float_voltage = float_voltage;
pr_info("%s: battery cv voltage 0x%x, chg_float_voltage = %dmV \n", __func__, reg_data, charger->pdata->chg_float_voltage);
}
static u8 max77833_get_float_voltage(struct max77833_charger_data *charger)
{
u8 reg_data = 0;
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_CNFG_06, &reg_data);
pr_info("%s: battery cv voltage 0x%x, chg_float_voltage = %dmV \n", __func__, reg_data, charger->pdata->chg_float_voltage);
return reg_data;
}
#endif
static int max77833_chg_create_attrs(struct device *dev)
{
unsigned long i;
int rc;
for (i = 0; i < ARRAY_SIZE(max77833_charger_attrs); i++) {
rc = device_create_file(dev, &max77833_charger_attrs[i]);
if (rc)
goto create_attrs_failed;
}
return rc;
create_attrs_failed:
dev_err(dev, "%s: failed (%d)\n", __func__, rc);
while (i--)
device_remove_file(dev, &max77833_charger_attrs[i]);
return rc;
}
ssize_t max77833_chg_show_attrs(struct device *dev,
struct device_attribute *attr, char *buf)
{
const ptrdiff_t offset = attr - max77833_charger_attrs;
int i = 0;
switch(offset) {
case CHIP_ID:
i += scnprintf(buf + i, PAGE_SIZE - i, "%s\n", "MAX77833");
break;
default:
return -EINVAL;
}
return i;
}
ssize_t max77833_chg_store_attrs(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
const ptrdiff_t offset = attr - max77833_charger_attrs;
int ret = 0;
switch(offset) {
case CHIP_ID:
ret = count;
break;
default:
ret = -EINVAL;
}
return ret;
}
static void max77833_chg_otype_check(struct max77833_charger_data *charger)
{
u8 reg_data;
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_CNFG_06, &reg_data);
if (reg_data != 0x78) {
return;
} else {
pr_info("%s : o-type register reset.\n", __func__);
/* unlock charger setting protect */
reg_data = 0x03;
max77833_write_reg(charger->i2c, MAX77833_CHG_REG_PROTECT, reg_data);
reg_data = max77833_get_float_voltage_data(charger->pdata->chg_float_voltage);
max77833_write_word(charger->i2c, MAX77833_CHG_REG_CNFG_06, reg_data);
pr_info("%s: battery cv voltage 0x%x\n", __func__, reg_data);
if (!charger->is_charging) {
return;
} else {
max77833_set_charger_state(charger, 0);
max77833_charger_function_control(charger);
}
}
}
static int max77833_chg_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct max77833_charger_data *charger =
container_of(psy, struct max77833_charger_data, psy_chg);
u8 reg_data;
max77833_chg_otype_check(charger);
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = POWER_SUPPLY_TYPE_BATTERY;
if (max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_OK, &reg_data) == 0) {
if (reg_data & MAX77833_WCIN_OK) {
val->intval = POWER_SUPPLY_TYPE_WIRELESS;
charger->wc_w_state = 1;
} else if (reg_data & MAX77833_CHGIN_OK) {
val->intval = POWER_SUPPLY_TYPE_MAINS;
}
}
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = max77833_check_battery(charger);
break;
case POWER_SUPPLY_PROP_STATUS:
val->intval = max77833_get_charger_state(charger);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
if (!charger->is_charging)
val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
else if (charger->aicl_on)
{
val->intval = POWER_SUPPLY_CHARGE_TYPE_SLOW;
pr_info("%s: slow-charging mode\n", __func__);
}
else
val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = max77833_get_charging_health(charger);
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
val->intval = charger->charging_current_max;
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
val->intval = max77833_get_input_current(charger);
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = max77833_get_input_current(charger);
pr_debug("%s : set-current(%dmA), current now(%dmA)\n",
__func__, charger->charging_current, val->intval);
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
break;
#if defined(CONFIG_BATTERY_SWELLING) || defined(CONFIG_BATTERY_SWELLING_SELF_DISCHARGING)
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
val->intval = max77833_get_float_voltage(charger);
break;
#endif
#if defined(CONFIG_AFC_CHARGER_MODE)
case POWER_SUPPLY_PROP_AFC_CHARGER_MODE:
return -ENODATA;
#endif
case POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL:
return -ENODATA;
case POWER_SUPPLY_PROP_USB_HC:
return -ENODATA;
case POWER_SUPPLY_PROP_CHARGE_NOW:
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_01, &reg_data);
reg_data &= 0x0F;
switch (reg_data) {
case 0x01:
val->strval = "CC Mode";
break;
case 0x02:
val->strval = "CV Mode";
break;
case 0x03:
val->strval = "EOC";
break;
case 0x04:
val->strval = "DONE";
break;
default:
val->strval = "NONE";
break;
}
break;
default:
return -EINVAL;
}
return 0;
}
static int max77833_chg_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct max77833_charger_data *charger =
container_of(psy, struct max77833_charger_data, psy_chg);
union power_supply_propval value;
u8 chg_cnfg_00 = 0;
static u8 chg_int_state;
switch (psp) {
/* val->intval : type */
case POWER_SUPPLY_PROP_STATUS:
charger->status = val->intval;
break;
case POWER_SUPPLY_PROP_ONLINE:
/* check and unlock */
check_charger_unlock_state(charger);
if (val->intval == POWER_SUPPLY_TYPE_POWER_SHARING) {
psy_do_property("ps", get,
POWER_SUPPLY_PROP_STATUS, value);
if (value.intval) {
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
CHG_CNFG_00_OTG_CTRL, CHG_CNFG_00_OTG_CTRL);
} else {
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
0, CHG_CNFG_00_OTG_CTRL);
}
break;
}
charger->cable_type = val->intval;
max77833_charger_function_control(charger);
max77833_set_current(charger);
break;
/* val->intval : input charging current */
case POWER_SUPPLY_PROP_CURRENT_MAX:
charger->charging_current_max = val->intval;
max77833_set_input_current(charger, val->intval);
break;
/* val->intval : charging current */
case POWER_SUPPLY_PROP_CURRENT_AVG:
#if defined(CONFIG_BATTERY_SWELLING)
if (val->intval > charger->pdata->charging_current
[charger->cable_type].fast_charging_current) {
break;
}
#endif
charger->charging_current = val->intval;
max77833_set_charge_current(charger,
val->intval);
break;
/* val->intval : charging current */
case POWER_SUPPLY_PROP_CURRENT_NOW:
max77833_set_charge_current(charger,
val->intval);
max77833_set_input_current(charger,
val->intval);
break;
#if defined(CONFIG_AFC_CHARGER_MODE)
case POWER_SUPPLY_PROP_AFC_CHARGER_MODE:
// max77833_hv_muic_charger_init();
break;
#endif
#if defined(CONFIG_BATTERY_SWELLING) || defined(CONFIG_BATTERY_SWELLING_SELF_DISCHARGING)
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
pr_info("%s: float voltage(%d)\n", __func__, val->intval);
max77833_set_float_voltage(charger, val->intval);
break;
#endif
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
charger->siop_level = val->intval;
max77833_set_current(charger);
break;
case POWER_SUPPLY_PROP_USB_HC:
/* set input/charging current for usb up to TA's current */
if (val->intval) {
charger->pdata->charging_current[
POWER_SUPPLY_TYPE_USB].fast_charging_current =
charger->pdata->charging_current[
POWER_SUPPLY_TYPE_MAINS].fast_charging_current;
charger->pdata->charging_current[
POWER_SUPPLY_TYPE_USB].input_current_limit =
charger->pdata->charging_current[
POWER_SUPPLY_TYPE_MAINS].input_current_limit;
/* restore input/charging current for usb */
} else {
charger->pdata->charging_current[
POWER_SUPPLY_TYPE_USB].fast_charging_current =
charger->pdata->charging_current[
POWER_SUPPLY_TYPE_BATTERY].input_current_limit;
charger->pdata->charging_current[
POWER_SUPPLY_TYPE_USB].input_current_limit =
charger->pdata->charging_current[
POWER_SUPPLY_TYPE_BATTERY].input_current_limit;
}
break;
case POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL:
if (val->intval) {
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_INT_MASK,
&chg_int_state);
/* OTG_EN set to HIGH */
if (charger->pdata->otg_en)
gpio_direction_output(charger->pdata->otg_en, 1);
/* eable charger interrupt: CHG_I, CHGIN_I */
/* enable charger interrupt: BYP_I */
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_INT_MASK,
0,
MAX77833_CHG_IM | MAX77833_CHGIN_IM | MAX77833_BYP_IM);
/* OTG on, boost on */
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
CHG_CNFG_00_OTG_CTRL, CHG_CNFG_00_OTG_CTRL);
} else {
psy_do_property("battery", get, POWER_SUPPLY_PROP_CHARGE_COUNTER_SHADOW, value);
if (charger->pdata->otg_en && value.intval != POWER_SUPPLY_TYPE_USB) {
gpio_direction_output(charger->pdata->otg_en, 0);
pr_info("%s: OTG_EN set to LOW. cable(%d)\n", __func__, charger->cable_type);
}
/* OTG off, boost off, (buck on) */
max77833_update_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
CHG_CNFG_00_BUCK_MASK, CHG_CNFG_00_BUCK_MASK | CHG_CNFG_00_OTG_CTRL);
/* enable charger interrupt */
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, chg_int_state);
}
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_INT_MASK,
&chg_int_state);
max77833_read_reg(charger->i2c, MAX77833_CHG_REG_CNFG_00,
&chg_cnfg_00);
pr_info("%s: INT_MASK(0x%x), CHG_CNFG_00(0x%x)\n",
__func__, chg_int_state, chg_cnfg_00);
break;
case POWER_SUPPLY_PROP_CHARGE_NOW:
default:
return -EINVAL;
}
return 0;
}
static int max77833_debugfs_show(struct seq_file *s, void *data)
{
struct max77833_charger_data *charger = s->private;
u8 reg;
u8 reg_data;
seq_printf(s, "MAX77833 CHARGER IC :\n");
seq_printf(s, "===================\n");
for (reg = 0x80; reg <= 0x9D; reg++) {
max77833_read_reg(charger->i2c, reg, &reg_data);
seq_printf(s, "0x%02x:\t0x%02x\n", reg, reg_data);
}
seq_printf(s, "\n");
return 0;
}
static int max77833_debugfs_open(struct inode *inode, struct file *file)
{
return single_open(file, max77833_debugfs_show, inode->i_private);
}
static const struct file_operations max77833_debugfs_fops = {
.open = max77833_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void max77833_chg_isr_work(struct work_struct *work)
{
struct max77833_charger_data *charger =
container_of(work, struct max77833_charger_data, isr_work.work);
union power_supply_propval val;
if (charger->pdata->full_check_type ==
SEC_BATTERY_FULLCHARGED_CHGINT) {
val.intval = max77833_get_charger_state(charger);
switch (val.intval) {
case POWER_SUPPLY_STATUS_DISCHARGING:
pr_err("%s: Interrupted but Discharging\n", __func__);
break;
case POWER_SUPPLY_STATUS_NOT_CHARGING:
pr_err("%s: Interrupted but NOT Charging\n", __func__);
break;
case POWER_SUPPLY_STATUS_FULL:
pr_info("%s: Interrupted by Full\n", __func__);
psy_do_property("battery", set,
POWER_SUPPLY_PROP_STATUS, val);
break;
case POWER_SUPPLY_STATUS_CHARGING:
pr_err("%s: Interrupted but Charging\n", __func__);
break;
case POWER_SUPPLY_STATUS_UNKNOWN:
default:
pr_err("%s: Invalid Charger Status\n", __func__);
break;
}
}
if (charger->pdata->ovp_uvlo_check_type ==
SEC_BATTERY_OVP_UVLO_CHGINT) {
val.intval = max77833_get_charging_health(charger);
switch (val.intval) {
case POWER_SUPPLY_HEALTH_OVERHEAT:
case POWER_SUPPLY_HEALTH_COLD:
pr_err("%s: Interrupted but Hot/Cold\n", __func__);
break;
case POWER_SUPPLY_HEALTH_DEAD:
pr_err("%s: Interrupted but Dead\n", __func__);
break;
case POWER_SUPPLY_HEALTH_OVERVOLTAGE:
case POWER_SUPPLY_HEALTH_UNDERVOLTAGE:
pr_info("%s: Interrupted by OVP/UVLO\n", __func__);
psy_do_property("battery", set,
POWER_SUPPLY_PROP_HEALTH, val);
break;
case POWER_SUPPLY_HEALTH_UNSPEC_FAILURE:
pr_err("%s: Interrupted but Unspec\n", __func__);
break;
case POWER_SUPPLY_HEALTH_GOOD:
pr_err("%s: Interrupted but Good\n", __func__);
break;
case POWER_SUPPLY_HEALTH_UNKNOWN:
default:
pr_err("%s: Invalid Charger Health\n", __func__);
break;
}
}
}
static irqreturn_t max77833_chg_irq_thread(int irq, void *irq_data)
{
struct max77833_charger_data *charger = irq_data;
pr_info("%s: Charger interrupt occured\n", __func__);
if ((charger->pdata->full_check_type ==
SEC_BATTERY_FULLCHARGED_CHGINT) ||
(charger->pdata->ovp_uvlo_check_type ==
SEC_BATTERY_OVP_UVLO_CHGINT))
schedule_delayed_work(&charger->isr_work, 0);
return IRQ_HANDLED;
}
static void wpc_detect_work(struct work_struct *work)
{
struct max77833_charger_data *charger = container_of(work,
struct max77833_charger_data,
wpc_work.work);
int wc_w_state;
int retry_cnt;
union power_supply_propval value;
u8 reg_data;
pr_info("%s\n", __func__);
max77833_update_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, 0, MAX77833_WCIN_IM);
/* check and unlock */
check_charger_unlock_state(charger);
retry_cnt = 0;
do {
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_OK, &reg_data);
wc_w_state = (reg_data & MAX77833_WCIN_OK)
>> MAX77833_WCIN_OK_SHIFT;
msleep(50);
} while((retry_cnt++ < 2) && (wc_w_state == 0));
if ((charger->wc_w_state == 0) && (wc_w_state == 1)) {
value.intval = 1;
psy_do_property("wireless", set,
POWER_SUPPLY_PROP_ONLINE, value);
value.intval = POWER_SUPPLY_TYPE_WIRELESS;
pr_info("%s: wpc activated, set V_INT as PN\n",
__func__);
} else if ((charger->wc_w_state == 1) && (wc_w_state == 0)) {
if (!charger->is_charging)
max77833_set_charger_state(charger, true);
retry_cnt = 0;
do {
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_01, &reg_data);
reg_data = ((reg_data & MAX77833_CHG_DTLS)
>> MAX77833_CHG_DTLS_SHIFT);
msleep(50);
} while((retry_cnt++ < 2) && (reg_data == 0x8));
pr_info("%s: reg_data: 0x%x, charging: %d\n", __func__,
reg_data, charger->is_charging);
if (!charger->is_charging)
max77833_set_charger_state(charger, false);
if ((reg_data != 0x08)
&& (charger->cable_type == POWER_SUPPLY_TYPE_WIRELESS)) {
pr_info("%s: wpc uvlo, but charging\n", __func__);
queue_delayed_work(charger->wqueue, &charger->wpc_work,
msecs_to_jiffies(500));
return;
} else {
value.intval = 0;
psy_do_property("wireless", set,
POWER_SUPPLY_PROP_ONLINE, value);
pr_info("%s: wpc deactivated, set V_INT as PD\n",
__func__);
}
}
pr_info("%s: w(%d to %d)\n", __func__,
charger->wc_w_state, wc_w_state);
charger->wc_w_state = wc_w_state;
/* Do unmask again. (for frequent wcin irq problem) */
max77833_update_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, 0, MAX77833_WCIN_IM);
wake_unlock(&charger->wpc_wake_lock);
}
static irqreturn_t wpc_charger_irq(int irq, void *data)
{
struct max77833_charger_data *charger = data;
unsigned long delay;
u8 reg_data;
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, &reg_data);
reg_data |= (1 << 5);
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, reg_data);
wake_lock(&charger->wpc_wake_lock);
#ifdef CONFIG_SAMSUNG_BATTERY_FACTORY
delay = msecs_to_jiffies(0);
#else
if (charger->wc_w_state)
delay = msecs_to_jiffies(500);
else
delay = msecs_to_jiffies(0);
#endif
queue_delayed_work(charger->wqueue, &charger->wpc_work,
delay);
return IRQ_HANDLED;
}
static irqreturn_t max77833_batp_irq(int irq, void *data)
{
struct max77833_charger_data *charger = data;
union power_supply_propval value;
u8 reg_data;
pr_info("%s : irq(%d)\n", __func__, irq);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, &reg_data);
reg_data |= (1 << 2);
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, reg_data);
check_charger_unlock_state(charger);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_OK,
&reg_data);
if (!(reg_data & MAX77833_BATP_OK))
psy_do_property("battery", set, POWER_SUPPLY_PROP_PRESENT, value);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, &reg_data);
reg_data &= ~(1 << 2);
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, reg_data);
return IRQ_HANDLED;
}
static irqreturn_t max77833_bypass_irq(int irq, void *data)
{
struct max77833_charger_data *charger = data;
u8 dtls_02;
u8 byp_dtls;
u8 chg_cnfg_00;
u8 vbus_state;
#ifdef CONFIG_USB_HOST_NOTIFY
struct otg_notify *o_notify;
o_notify = get_otg_notify();
#endif
pr_info("%s: irq(%d)\n", __func__, irq);
/* check and unlock */
check_charger_unlock_state(charger);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_02,
&dtls_02);
byp_dtls = ((dtls_02 & MAX77833_BYP_DTLS) >>
MAX77833_BYP_DTLS_SHIFT);
pr_info("%s: BYP_DTLS(0x%02x)\n", __func__, byp_dtls);
vbus_state = max77833_get_vbus_state(charger);
if (byp_dtls & 0x1) {
pr_info("%s: bypass overcurrent limit\n", __func__);
#ifdef CONFIG_USB_HOST_NOTIFY
send_otg_notify(o_notify, NOTIFY_EVENT_OVERCURRENT, 0);
#endif
/* disable the register values just related to OTG and
keep the values about the charging */
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_00, &chg_cnfg_00);
chg_cnfg_00 &= ~(CHG_CNFG_00_OTG_MASK
| CHG_CNFG_00_BOOST_MASK);
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_00,
chg_cnfg_00);
}
return IRQ_HANDLED;
}
static void max77833_aicl_work(struct work_struct *work)
{
struct max77833_charger_data *charger = container_of(work,
struct max77833_charger_data, aicl_work.work);
charger->afc_detect = false;
if ((charger->is_charging) &&
(charger->cable_type != POWER_SUPPLY_TYPE_WIRELESS)) {
int now_count = 0,
max_count = charger->charging_current_max / REDUCE_CURRENT_STEP;
int prev_current_max = charger->charging_current_max;
mutex_lock(&charger->charger_mutex);
check_charger_unlock_state(charger);
while (max77833_check_aicl_state(charger) &&
(now_count++ < max_count) && (charger->is_charging) &&
(charger->cable_type != POWER_SUPPLY_TYPE_WIRELESS)) {
reduce_input_current(charger, REDUCE_CURRENT_STEP);
msleep(50);
}
pr_info("%s: charging_current_max(%d --> %d)\n",
__func__, prev_current_max, charger->charging_current_max);
if (prev_current_max > charger->charging_current_max) {
max77833_check_slow_charging(charger, charger->charging_current_max);
}
mutex_unlock(&charger->charger_mutex);
}
wake_unlock(&charger->aicl_wake_lock);
}
static irqreturn_t max77833_aicl_irq(int irq, void *data)
{
struct max77833_charger_data *charger = data;
pr_info("%s: irq(%d)\n", __func__, irq);
wake_lock(&charger->aicl_wake_lock);
queue_delayed_work(charger->wqueue, &charger->aicl_work,
msecs_to_jiffies(50));
return IRQ_HANDLED;
}
static void max77833_chgin_isr_work(struct work_struct *work)
{
struct max77833_charger_data *charger = container_of(work,
struct max77833_charger_data, chgin_work);
u8 chgin_dtls, chg_dtls, chg_cnfg_00, reg_data;
u8 prev_chgin_dtls = 0xff;
int battery_health;
union power_supply_propval value;
int stable_count = 0;
wake_lock(&charger->chgin_wake_lock);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, &reg_data);
reg_data |= (1 << 6);
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, reg_data);
while (1) {
psy_do_property("battery", get,
POWER_SUPPLY_PROP_HEALTH, value);
battery_health = value.intval;
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_00,
&chgin_dtls);
chgin_dtls = ((chgin_dtls & MAX77833_CHGIN_DTLS) >>
MAX77833_CHGIN_DTLS_SHIFT);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_DTLS_01, &chg_dtls);
chg_dtls = ((chg_dtls & MAX77833_CHG_DTLS) >>
MAX77833_CHG_DTLS_SHIFT);
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_00, &chg_cnfg_00);
if (prev_chgin_dtls == chgin_dtls)
stable_count++;
else
stable_count = 0;
if (stable_count > 10) {
pr_info("%s: irq(%d), chgin(0x%x), chg_dtls(0x%x) prev 0x%x\n",
__func__, charger->irq_chgin,
chgin_dtls, chg_dtls, prev_chgin_dtls);
if (charger->is_charging) {
if ((chgin_dtls == 0x02) && \
(battery_health != POWER_SUPPLY_HEALTH_OVERVOLTAGE)) {
pr_info("%s: charger is over voltage\n",
__func__);
value.intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
psy_do_property("battery", set,
POWER_SUPPLY_PROP_HEALTH, value);
} else if (((chgin_dtls == 0x0) || (chgin_dtls == 0x01)) &&(chg_dtls & 0x08) && \
(chg_cnfg_00 & MAX77833_MODE_BUCK) && \
(chg_cnfg_00 & MAX77833_MODE_CHGR) && \
(battery_health != POWER_SUPPLY_HEALTH_UNDERVOLTAGE) && \
(charger->cable_type != POWER_SUPPLY_TYPE_WIRELESS)) {
pr_info("%s, vbus_state : 0x%d, chg_state : 0x%d\n", __func__, chgin_dtls, chg_dtls);
pr_info("%s: vBus is undervoltage\n", __func__);
value.intval = POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
psy_do_property("battery", set,
POWER_SUPPLY_PROP_HEALTH, value);
}
} else {
if ((battery_health == \
POWER_SUPPLY_HEALTH_OVERVOLTAGE) &&
(chgin_dtls != 0x02)) {
pr_info("%s: vbus_state : 0x%d, chg_state : 0x%d\n", __func__, chgin_dtls, chg_dtls);
pr_info("%s: overvoltage->normal\n", __func__);
value.intval = POWER_SUPPLY_HEALTH_GOOD;
psy_do_property("battery", set,
POWER_SUPPLY_PROP_HEALTH, value);
} else if ((battery_health == \
POWER_SUPPLY_HEALTH_UNDERVOLTAGE) &&
!((chgin_dtls == 0x0) || (chgin_dtls == 0x01))){
pr_info("%s: vbus_state : 0x%d, chg_state : 0x%d\n", __func__, chgin_dtls, chg_dtls);
pr_info("%s: undervoltage->normal\n", __func__);
value.intval = POWER_SUPPLY_HEALTH_GOOD;
psy_do_property("battery", set,
POWER_SUPPLY_PROP_HEALTH, value);
max77833_set_input_current(charger,
charger->charging_current_max);
}
}
break;
}
prev_chgin_dtls = chgin_dtls;
msleep(100);
}
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, &reg_data);
reg_data &= ~(1 << 6);
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, reg_data);
wake_unlock(&charger->chgin_wake_lock);
}
static irqreturn_t max77833_chgin_irq(int irq, void *data)
{
struct max77833_charger_data *charger = data;
queue_work(charger->wqueue, &charger->chgin_work);
return IRQ_HANDLED;
}
/* register chgin isr after sec_battery_probe */
static void max77833_chgin_init_work(struct work_struct *work)
{
struct max77833_charger_data *charger = container_of(work,
struct max77833_charger_data,
chgin_init_work.work);
int ret;
pr_info("%s \n", __func__);
ret = request_threaded_irq(charger->irq_chgin, NULL,
max77833_chgin_irq, 0, "chgin-irq", charger);
if (ret < 0) {
pr_err("%s: fail to request chgin IRQ: %d: %d\n",
__func__, charger->irq_chgin, ret);
} else {
max77833_update_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, 0, MAX77833_CHGIN_IM);
}
}
#ifdef CONFIG_OF
static int max77833_charger_parse_dt(struct max77833_charger_data *charger)
{
struct device_node *np = of_find_node_by_name(NULL, "max77833-charger");
sec_charger_platform_data_t *pdata = charger->pdata;
int ret = 0;
int i, len;
const u32 *p;
u32 irq_gpio_flags;
if (np == NULL) {
pr_err("%s np NULL\n", __func__);
} else {
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 = pdata->irq_gpio = of_get_named_gpio_flags(np, "battery,irq_gpio",
0, &irq_gpio_flags);
if (ret < 0)
pr_err("%s : can't get irq-gpio \n", __func__);
else {
pr_info("%s : irq_gpio = %d \n",__func__, pdata->irq_gpio);
pdata->chg_irq = gpio_to_irq(pdata->irq_gpio);
pr_info("%s : chg_irq = 0x%x \n",__func__, pdata->chg_irq);
}
pdata->wpc_det = of_get_named_gpio(np, "battery,wpc_det", 0);
if (pdata->wpc_det < 0)
pdata->wpc_det = 0;
pdata->otg_en = of_get_named_gpio(np, "battery,otg_en", 0);
if (pdata->otg_en < 0)
pdata->otg_en = 0;
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__);
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);
ret = of_property_read_u32_index(np,
"battery,fast_charging_current", i,
&pdata->charging_current[i].fast_charging_current);
ret = of_property_read_u32_index(np,
"battery,full_check_current_1st", i,
&pdata->charging_current[i].full_check_current_1st);
ret = of_property_read_u32_index(np,
"battery,full_check_current_2nd", i,
&pdata->charging_current[i].full_check_current_2nd);
}
}
return ret;
}
#endif
static int __devinit max77833_charger_probe(struct platform_device *pdev)
{
struct max77833_dev *max77833 = dev_get_drvdata(pdev->dev.parent);
struct max77833_platform_data *pdata = dev_get_platdata(max77833->dev);
struct max77833_charger_data *charger;
int ret = 0;
u8 reg_data;
pr_info("%s: Max77833 Charger Driver Loading\n", __func__);
charger = kzalloc(sizeof(*charger), GFP_KERNEL);
if (!charger)
return -ENOMEM;
pdata->charger_data = kzalloc(sizeof(sec_charger_platform_data_t), GFP_KERNEL);
if (!pdata->charger_data) {
ret = -ENOMEM;
goto err_free;
}
mutex_init(&charger->charger_mutex);
charger->dev = &pdev->dev;
charger->i2c = max77833->i2c;
charger->pdata = pdata->charger_data;
charger->aicl_on = false;
charger->afc_detect = false;
charger->is_mdock = false;
charger->siop_level = 100;
charger->max77833_pdata = pdata;
charger->input_curr_limit_step = 25;
#if defined(CONFIG_OF)
ret = max77833_charger_parse_dt(charger);
if (ret < 0) {
pr_err("%s not found charger dt! ret[%d]\n",
__func__, ret);
}
#endif
platform_set_drvdata(pdev, charger);
charger->psy_chg.name = "max77833-charger";
charger->psy_chg.type = POWER_SUPPLY_TYPE_UNKNOWN;
charger->psy_chg.get_property = max77833_chg_get_property;
charger->psy_chg.set_property = max77833_chg_set_property;
charger->psy_chg.properties = max77833_charger_props;
charger->psy_chg.num_properties = ARRAY_SIZE(max77833_charger_props);
max77833_charger_initialize(charger);
if (charger->pdata->otg_en) {
ret = gpio_request(charger->pdata->otg_en, "OTG_EN");
if (ret) {
pr_err("failed to request GPIO %u\n", charger->pdata->otg_en);
goto err_gpio;
}
}
if (max77833_read_reg(max77833->i2c, MAX77833_PMIC_REG_PMICREV, &reg_data) < 0) {
pr_err("device not found on this channel (this is not an error)\n");
ret = -ENOMEM;
goto err_pdata_free;
} else {
charger->pmic_ver = (reg_data & 0x7);
pr_info("%s : device found : ver.0x%x\n", __func__, charger->pmic_ver);
}
(void) debugfs_create_file("max77833-regs",
S_IRUGO, NULL, (void *)charger, &max77833_debugfs_fops);
charger->wqueue =
create_singlethread_workqueue(dev_name(&pdev->dev));
if (!charger->wqueue) {
pr_err("%s: Fail to Create Workqueue\n", __func__);
goto err_pdata_free;
}
wake_lock_init(&charger->chgin_wake_lock, WAKE_LOCK_SUSPEND,
"charger->chgin");
INIT_WORK(&charger->chgin_work, max77833_chgin_isr_work);
INIT_DELAYED_WORK(&charger->chgin_init_work, max77833_chgin_init_work);
wake_lock_init(&charger->wpc_wake_lock, WAKE_LOCK_SUSPEND,
"charger-wpc");
wake_lock_init(&charger->afc_wake_lock, WAKE_LOCK_SUSPEND,
"charger-afc");
INIT_DELAYED_WORK(&charger->wpc_work, wpc_detect_work);
INIT_DELAYED_WORK(&charger->afc_work, afc_detect_work);
wake_lock_init(&charger->aicl_wake_lock, WAKE_LOCK_SUSPEND,
"charger-aicl");
INIT_DELAYED_WORK(&charger->aicl_work, max77833_aicl_work);
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;
}
if (charger->pdata->chg_irq) {
INIT_DELAYED_WORK(&charger->isr_work, max77833_chg_isr_work);
ret = request_threaded_irq(charger->pdata->chg_irq,
NULL, max77833_chg_irq_thread,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
IRQF_ONESHOT,
"charger-irq", charger);
if (ret) {
pr_err("%s: Failed to Request IRQ\n", __func__);
goto err_irq;
}
ret = enable_irq_wake(charger->pdata->chg_irq);
if (ret < 0)
pr_err("%s: Failed to Enable Wakeup Source(%d)\n",
__func__, ret);
}
charger->wc_w_irq = pdata->irq_base + MAX77833_CHG_IRQ_WCIN_I;
ret = request_threaded_irq(charger->wc_w_irq,
NULL, wpc_charger_irq,
IRQF_TRIGGER_FALLING,
"wpc-int", charger);
if (ret) {
pr_err("%s: Failed to Request IRQ\n", __func__);
goto err_wc_irq;
}
max77833_read_reg(charger->i2c,
MAX77833_CHG_REG_INT_OK, &reg_data);
charger->wc_w_state = (reg_data & MAX77833_WCIN_OK)
>> MAX77833_WCIN_OK_SHIFT;
charger->irq_chgin = pdata->irq_base + MAX77833_CHG_IRQ_CHGIN_I;
/* enable chgin irq after sec_battery_probe */
queue_delayed_work(charger->wqueue, &charger->chgin_init_work,
msecs_to_jiffies(3000));
charger->irq_bypass = pdata->irq_base + MAX77833_CHG_IRQ_BYP_I;
ret = request_threaded_irq(charger->irq_bypass, NULL,
max77833_bypass_irq, 0, "bypass-irq", charger);
if (ret < 0) {
pr_err("%s: fail to request bypass IRQ: %d: %d\n",
__func__, charger->irq_bypass, ret);
} else {
max77833_update_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, 0, MAX77833_BYP_IM);
}
charger->irq_batp = pdata->irq_base + MAX77833_CHG_IRQ_BATP_I;
ret = request_threaded_irq(charger->irq_batp, NULL,
max77833_batp_irq, 0,
"batp-irq", charger);
if (ret < 0) {
pr_err("%s: fail to request batp IRQ: %d: %d\n",
__func__, charger->irq_batp, ret);
} else {
max77833_update_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, 0, MAX77833_BATP_IM);
}
charger->irq_aicl = pdata->irq_base + MAX77833_CHG_IRQ_AICL_I;
ret = request_threaded_irq(charger->irq_aicl, NULL,
max77833_aicl_irq, 0, "aicl-irq", charger);
if (ret < 0) {
pr_err("%s: fail to request aicl IRQ: %d: %d\n",
__func__, charger->irq_aicl, ret);
} else {
max77833_update_reg(charger->i2c,
MAX77833_CHG_REG_INT_MASK, 0, MAX77833_AICL_IM);
}
ret = max77833_chg_create_attrs(charger->psy_chg.dev);
if (ret) {
dev_err(charger->dev,
"%s : Failed to create_attrs\n", __func__);
goto err_wc_irq;
}
pr_info("%s: MAX77833 Charger Driver Loaded\n", __func__);
return 0;
err_wc_irq:
free_irq(charger->pdata->chg_irq, NULL);
err_irq:
power_supply_unregister(&charger->psy_chg);
err_power_supply_register:
destroy_workqueue(charger->wqueue);
err_pdata_free:
if (charger->pdata->otg_en)
gpio_free(charger->pdata->otg_en);
err_gpio:
kfree(pdata->charger_data);
mutex_destroy(&charger->charger_mutex);
err_free:
kfree(charger);
return ret;
}
static int __devexit max77833_charger_remove(struct platform_device *pdev)
{
struct max77833_charger_data *charger =
platform_get_drvdata(pdev);
destroy_workqueue(charger->wqueue);
free_irq(charger->wc_w_irq, NULL);
free_irq(charger->pdata->chg_irq, NULL);
power_supply_unregister(&charger->psy_chg);
mutex_destroy(&charger->charger_mutex);
kfree(charger);
return 0;
}
#if defined CONFIG_PM
static int max77833_charger_suspend(struct device *dev)
{
return 0;
}
static int max77833_charger_resume(struct device *dev)
{
return 0;
}
#else
#define max77833_charger_suspend NULL
#define max77833_charger_resume NULL
#endif
static void max77833_charger_shutdown(struct device *dev)
{
struct max77833_charger_data *charger =
dev_get_drvdata(dev);
u8 reg_data;
pr_info("%s: MAX77833 Charger driver shutdown\n", __func__);
if (!charger->i2c) {
pr_err("%s: no max77833 i2c client\n", __func__);
return;
}
reg_data = 0x04;
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_00, reg_data);
reg_data = 0x14;
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_16, reg_data);
reg_data = 0x14;
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_17, reg_data);
reg_data = 0xE7;
max77833_write_reg(charger->i2c,
MAX77833_CHG_REG_CNFG_18, reg_data);
pr_info("func:%s \n", __func__);
}
static SIMPLE_DEV_PM_OPS(max77833_charger_pm_ops, max77833_charger_suspend,
max77833_charger_resume);
static struct platform_driver max77833_charger_driver = {
.driver = {
.name = "max77833-charger",
.owner = THIS_MODULE,
#ifdef CONFIG_PM
.pm = &max77833_charger_pm_ops,
#endif
.shutdown = max77833_charger_shutdown,
},
.probe = max77833_charger_probe,
.remove = __devexit_p(max77833_charger_remove),
};
static int __init max77833_charger_init(void)
{
pr_info("%s : \n", __func__);
return platform_driver_register(&max77833_charger_driver);
}
static void __exit max77833_charger_exit(void)
{
platform_driver_unregister(&max77833_charger_driver);
}
module_init(max77833_charger_init);
module_exit(max77833_charger_exit);
MODULE_DESCRIPTION("Samsung MAX77833 Charger Driver");
MODULE_AUTHOR("Samsung Electronics");
MODULE_LICENSE("GPL");
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