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android_kernel_samsung_on5x.../drivers/battery/s2mpu06_charger.c
awab228 f6dfaef42e Fixed MTP to work with TWRP
2018-06-19 23:16:04 +02:00

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/* drivers/battery/s2mpu06_charger.c
* S2MPU06 Charger Driver
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*/
#include <linux/mfd/samsung/s2mpu06.h>
#include <linux/power/s2mpu06_charger.h>
#include <linux/version.h>
#if defined(CONFIG_MUIC_NOTIFIER)
#include <linux/muic/muic.h>
#include <linux/muic/muic_notifier.h>
#endif
#define ENABLE 1
#define DISABLE 0
#define ENABLE_IVR 1
#define EN_OVP_IRQ 1
#define EN_IEOC_IRQ 1
#define EN_TOPOFF_IRQ 1
#define EN_RECHG_REQ_IRQ 0
#define EN_TR_IRQ 0
#define EN_MIVR_SW_REGULATION 0
#define EN_BST_IRQ 0
#define MINVAL(a, b) ((a <= b) ? a : b)
#define EOC_DEBOUNCE_CNT 2
#define HEALTH_DEBOUNCE_CNT 3
#define DEFAULT_CHARGING_CURRENT 500
#define EOC_SLEEP 200
#define EOC_TIMEOUT (EOC_SLEEP * 6)
#ifndef EN_TEST_READ
#define EN_TEST_READ 1
#endif
struct s2mpu06_charger_data {
struct i2c_client *client;
struct device *dev;
struct s2mpu06_platform_data *s2mpu06_pdata;
struct s2mpu06_dev *s2mpu06;
struct delayed_work charger_work;
struct workqueue_struct *charger_wqueue;
struct power_supply psy_chg;
struct power_supply psy_battery;
struct power_supply psy_usb;
struct power_supply psy_ac;
s2mpu06_charger_platform_data_t *pdata;
int dev_id;
int input_current;
int charging_current;
int topoff_current;
int cable_type;
int battery_cable_type;
bool is_charging;
struct mutex io_lock;
bool noti_check;
/* register programming */
int reg_addr;
int reg_data;
bool full_charged;
bool ovp;
int unhealth_cnt;
bool battery_valid;
int status;
int health;
int charge_mode;
/* s2mpu06 */
int irq_det_bat;
int irq_chg;
int irq_ovp;
struct delayed_work polling_work;
#if defined(CONFIG_FUELGAUGE_S2MPU06)
int voltage_now;
int voltage_avg;
int voltage_ocv;
unsigned int capacity;
#endif
#if defined(CONFIG_MUIC_NOTIFIER)
struct notifier_block cable_check;
#endif
};
static enum power_supply_property s2mpu06_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,
};
static int s2mpu06_get_charging_health(struct s2mpu06_charger_data *charger);
static void s2mpu06_enable_charger_switch(struct s2mpu06_charger_data *charger,
bool enable);
static void s2mpu06_test_read(struct i2c_client *i2c)
{
u8 data;
char str[1016] = {0,};
int i;
for (i = 0x0; i <= 0x23; i++) {
s2mpu06_read_reg(i2c, i, &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", i, data);
}
pr_err("%s: %s\n", __func__, str);
}
static void s2mpu06_chg_check(struct s2mpu06_charger_data *charger)
{
union power_supply_propval val;
unsigned int soc;
u8 temp;
pr_info("%s: start\n", __func__);
val.intval = SEC_FUELGAUGE_CAPACITY_TYPE_RAW;
psy_do_property(charger->pdata->fuelgauge_name, get,
POWER_SUPPLY_PROP_CAPACITY, val);
soc = val.intval / 100;
pr_info("%s: soc %d\n", __func__, soc);
s2mpu06_read_reg(charger->s2mpu06->i2c, 0x18, &temp);
if (soc >= 90 && soc <= 92) {
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL12, 0x08, 0x0C);
s2mpu06_write_reg(charger->client, 0x43, 0x34);
msleep(10);
s2mpu06_write_reg(charger->client, 0x43, 0x24);
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL12, 0x0C, 0x0C);
pr_info("%s: enable %d\n", __func__, soc);
}
pr_info("%s: end, soc=%d, monitor? = 0x%2x\n", __func__, soc, temp);
}
static void s2mpu06_charger_otg_control(struct s2mpu06_charger_data *charger,
bool enable)
{
if (enable) {
/* set mode to OTG */
if (s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL3,
CHG_MODE_OTG_BOOST << CHG_MODE_SHIFT,
CHG_MODE_MASK))
pr_err("%s: error updating charger ctrl3\n", __func__);
/* set boost frequency to 1MHz */
/* set OTG current limit to 0.5 A */
/* VBUS switches are OFF when OTG over-current happen */
/* set OTG voltage to 5.1 V */
/* turn on OTG */
if (s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL14,
OTG_EN_MASK, OTG_EN_MASK))
pr_err("%s: error updating charger ctrl14\n", __func__);
pr_info("%s : Turn on OTG\n", __func__);
} else {
/* turn off OTG */
if (s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL14,
0x00, OTG_EN_MASK))
pr_err("%s: error updating charger ctrl14\n", __func__);
/* set mode to BUCK mode */
if (s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL3,
CHG_MODE_EN << CHG_MODE_SHIFT,
CHG_MODE_MASK))
pr_err("%s: error updating charger ctrl3\n", __func__);
pr_info("%s : Turn off OTG\n", __func__);
}
}
static void s2mpu06_enable_charger_switch(struct s2mpu06_charger_data *charger,
bool enable)
{
if (enable) {
pr_err("[DEBUG]%s: turn on charger\n", __func__);
if (s2mpu06_update_reg(charger->client,
S2MPU06_CHG_REG_CTRL3, CHG_MODE_EN << CHG_MODE_SHIFT,
CHG_MODE_MASK))
pr_err("%s: error updating charger ctrl3\n", __func__);
msleep(200); /* 200ms delay for prevent fake UVLO */
} else {
charger->full_charged = false;
charger->ovp = false;
pr_err("[DEBUG] %s: turn off charger\n", __func__);
if (s2mpu06_update_reg(charger->client,
S2MPU06_CHG_REG_CTRL3, CHG_MODE_OFF << CHG_MODE_SHIFT,
CHG_MODE_MASK))
pr_err("%s: error updating charger ctrl3\n", __func__);
}
}
static void s2mpu06_set_regulation_voltage(struct s2mpu06_charger_data *charger,
int float_voltage)
{
u8 data;
pr_err("[DEBUG]%s: float_voltage %d\n", __func__, float_voltage);
if (float_voltage <= 3600)
data = 0x60;
else if (float_voltage > 3600 && float_voltage <= 4450)
data = (float_voltage - 3600) / 10 + 0x60;
else
data = 0xB5;
if (s2mpu06_write_reg(charger->client, S2MPU06_CHG_REG_CTRL2, data))
pr_err("%s: error writing charger ctrl2\n", __func__);
}
static void s2mpu06_set_input_current_limit(
struct s2mpu06_charger_data *charger, int charging_current)
{
u8 data;
pr_err("%s: input current limit %d\n", __func__,
charging_current);
if (charging_current <= 100)
data = 0x0A;
else if (charging_current > 100 && charging_current <= 1800)
data = charging_current / 10;
else
data = 0xB4;
if (s2mpu06_write_reg(charger->client, S2MPU06_CHG_REG_CTRL1, data))
pr_err("%s: error writing charger ctrl1\n", __func__);
}
static int s2mpu06_get_input_current_limit(struct i2c_client *i2c)
{
u8 data;
if (s2mpu06_read_reg(i2c, S2MPU06_CHG_REG_CTRL1, &data)) {
pr_err("%s: error reading charger ctrl1\n", __func__);
return 0;
}
if (data > 0xB4)
data = 0xB4;
return (data * 10);
}
static void s2mpu06_set_charging_current(struct i2c_client *i2c,
int charging_current)
{
u8 data;
pr_err("%s: current %d\n", __func__, charging_current);
if (charging_current <= 240)
data = 0x08;
else if (charging_current > 240 && charging_current <= 2000)
data = (charging_current - 240) / 20 + 0x08;
else
data = 0x60;
if (s2mpu06_update_reg(i2c, S2MPU06_CHG_REG_CTRL10,
data << FAST_CHARGING_CURRENT_SHIFT,
FAST_CHARGING_CURRENT_MASK))
pr_err("%s: error updating charger ctrl10\n", __func__);
}
static int s2mpu06_get_charging_current(struct i2c_client *i2c)
{
u8 data;
if (s2mpu06_read_reg(i2c, S2MPU06_CHG_REG_CTRL10, &data)) {
pr_err("%s: error reading charger ctrl10\n", __func__);
return 0;
}
data = data & FAST_CHARGING_CURRENT_MASK;
if (data > 0x60)
data = 0x60;
return ((data - 0x08) * 20 + 240);
}
static int s2mpu06_get_topoff_current(struct s2mpu06_charger_data *charger)
{
u8 data;
if (s2mpu06_read_reg(charger->client, S2MPU06_CHG_REG_CTRL9, &data)) {
pr_err("%s: error reading charger ctrl9\n", __func__);
return 0;
}
data = data & FIRST_TOPOFF_CURRENT_MASK;
if (data > 0x3C)
data = 0x3C;
return (data - 1) * 10 + 90;
}
static void s2mpu06_set_topoff_current(struct i2c_client *i2c,
int eoc_1st_2nd, int current_limit)
{
u8 data;
pr_err("%s: current %d\n", __func__, current_limit);
if (current_limit <= 100)
data = 0x02;
else if (current_limit > 100 && current_limit <= 500)
data = (current_limit - 100) / 10 + 0x02;
else
data = 0x2A;
switch (eoc_1st_2nd) {
case 1:
if (s2mpu06_update_reg(i2c, S2MPU06_CHG_REG_CTRL9,
data << FIRST_TOPOFF_CURRENT_SHIFT,
FIRST_TOPOFF_CURRENT_MASK))
pr_err("%s: error updating charger ctrl9\n", __func__);
break;
case 2:
break;
default:
break;
}
}
#if ENABLE_IVR
/* charger input regulation voltage setting */
static void s2mpu06_set_ivr_level(struct s2mpu06_charger_data *charger)
{
u8 ivr = S2MPU06_IVR_4400MV;
if (s2mpu06_write_reg(charger->client, S2MPU06_CHG_REG_CTRL5, ivr))
pr_err("%s: error writing charger ctrl5\n", __func__);
}
#endif /* ENABLE_IVR */
#define S2MPU06_MRSTB_CTRL 0x2C
static bool s2mpu06_chg_init(struct s2mpu06_charger_data *charger)
{
/* Buck switching mode frequency setting */
/* Disable Timer function (Charging timeout fault) */
if (s2mpu06_update_reg(charger->client,
S2MPU06_CHG_REG_CTRL4, 0x00, 0x01))
pr_err("%s: error for timer disable for aging test\n", __func__);
/* to be */
/* Disable TE */
/* to be */
/* MUST set correct regulation voltage first
* Before MUIC pass cable type information to charger
* charger would be already enabled (default setting)
* it might cause EOC event by incorrect regulation voltage */
/* to be */
#if !(ENABLE_IVR)
/* voltage regulatio disable does not exist mu005 */
#endif
s2mpu06_set_ivr_level(charger);
/* TOP-OFF debounce time set 256us */
/* only 003 ? need to check */
/* Disable (set 0min TOP OFF Timer) */
/* EN_BST_ST_DN disable */
if (s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL8,
0, EN_BST_ST_DN_MASK))
pr_err("%s: error updating charger ctrl8\n", __func__);
if (s2mpu06_update_reg(charger->client,
S2MPU06_CHG_REG_CTRL16, 0x00, 0x40))
pr_err("%s: error for updating charging Protection bit\n", __func__);
/* OTG Current Limit : 900mA */
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL13,
0x2, 0x3);
/* Top-Off Timer 30 min */
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL20,
0x80, 0xE0);
/* Disable Internal Timer */
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL4,
0x0, 0x1);
/* Termination Disable */
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL3,
0x0, 0x40);
/* Auto-Recharging Disable & WatchdogTimer Enable */
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL12,
0x8C, 0x8C);
/* protection for early CV */
if (s2mpu06_write_reg(charger->client, 0x50, 0x84))
pr_err("%s: error protecting early CV 0x50\n", __func__);
if (s2mpu06_write_reg(charger->client, 0x3C, 0x0D))
pr_err("%s: error protecting early CV 0x3C\n", __func__);
if (s2mpu06_write_reg(charger->client, 0x4B, 0xFA))
pr_err("%s: error protecting early CV 0x4B\n", __func__);
/* check CV mode */
s2mpu06_write_reg(charger->s2mpu06->i2c, 0x18, 0x44);
s2mpu06_write_reg(charger->client, 0x80, 0x7A);
/* SOC sel 80%->90% */
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL3, 0x08, 0x08);
return true;
}
static int s2mpu06_get_charging_status(struct s2mpu06_charger_data *charger)
{
int status = POWER_SUPPLY_STATUS_UNKNOWN;
u8 chg_sts, chg_sts2;
union power_supply_propval chg_mode;
if (s2mpu06_read_reg(charger->client, S2MPU06_CHG_REG_STATUS1, &chg_sts)) {
pr_err("%s: error reading charger status1\n", __func__);
return POWER_SUPPLY_STATUS_UNKNOWN;
}
if (s2mpu06_read_reg(charger->client, S2MPU06_CHG_REG_STATUS2, &chg_sts2)) {
pr_err("%s: error reading charger status2\n", __func__);
return POWER_SUPPLY_STATUS_UNKNOWN;
}
psy_do_property("battery", get, POWER_SUPPLY_PROP_CHARGE_NOW, chg_mode);
if ((chg_sts & 0x20) == 0 && (chg_sts2 & 0x20) == 0)
status = POWER_SUPPLY_STATUS_DISCHARGING;
else if (chg_sts2 & 0x20)
status = POWER_SUPPLY_STATUS_FULL;
else if (chg_sts & 0x20)
status = POWER_SUPPLY_STATUS_CHARGING;
else if (!(chg_sts & 0x02))
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
return status;
}
static int s2mpu06_get_charge_type(struct i2c_client *i2c)
{
int status = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
u8 ret;
if (s2mpu06_read_reg(i2c, S2MPU06_CHG_REG_STATUS1, &ret)) {
pr_err("%s: error reading charger status1\n", __func__);
return POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
}
switch (ret & 0x60) {
case 0x60:
status = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
default:
/* pre-charge mode */
status = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
}
return status;
}
static bool s2mpu06_get_batt_present(struct i2c_client *i2c)
{
u8 ret;
if (s2mpu06_read_reg(i2c, S2MPU06_CHG_REG_STATUS2, &ret)) {
pr_err("%s: error reading charger status2\n", __func__);
return false;
}
return (ret & DET_BAT_STATUS_MASK) ? false : true;
}
static int s2mpu06_get_charging_health(struct s2mpu06_charger_data *charger)
{
u8 ret;
s2mpu06_test_read(charger->client);
s2mpu06_chg_check(charger);
/* clear watchdog */
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL12,
0x01, 0x03);
s2mpu06_update_reg(charger->client, S2MPU06_CHG_REG_CTRL12,
0x00, 0x03);
if (s2mpu06_read_reg(charger->client, S2MPU06_CHG_REG_STATUS1, &ret)) {
pr_err("%s: error reading charger status1\n", __func__);
return POWER_SUPPLY_HEALTH_UNKNOWN;
}
pr_info("%s: read charger status 1 (0x%x)\n", __func__, ret);
if (ret & (1 << CHG_STATUS1_CHGVIN_STS)) {
charger->ovp = false;
return POWER_SUPPLY_HEALTH_GOOD;
}
charger->unhealth_cnt = HEALTH_DEBOUNCE_CNT;
if (charger->ovp)
return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
return POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
}
static int sec_chg_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
int chg_curr, aicr;
struct s2mpu06_charger_data *charger =
container_of(psy, struct s2mpu06_charger_data, psy_chg);
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = charger->charging_current ? 1 : 0;
break;
case POWER_SUPPLY_PROP_STATUS:
val->intval = s2mpu06_get_charging_status(charger);
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = s2mpu06_get_charging_health(charger);
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
val->intval = s2mpu06_get_input_current_limit(charger->client);
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (charger->charging_current) {
aicr = s2mpu06_get_input_current_limit(charger->client);
chg_curr =
s2mpu06_get_charging_current(charger->client);
val->intval = MINVAL(aicr, chg_curr);
} else
val->intval = 0;
break;
case POWER_SUPPLY_PROP_CURRENT_FULL:
val->intval = s2mpu06_get_topoff_current(charger);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
val->intval = s2mpu06_get_charge_type(charger->client);
break;
#if defined(CONFIG_BATTERY_SWELLING) || \
defined(CONFIG_BATTERY_SWELLING_SELF_DISCHARGING)
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
val->intval = charger->pdata->chg_float_voltage;
break;
#endif
case POWER_SUPPLY_PROP_PRESENT:
val->intval = s2mpu06_get_batt_present(charger->client);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
val->intval = charger->is_charging;
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 s2mpu06_charger_data *charger =
container_of(psy, struct s2mpu06_charger_data, psy_chg);
/* int eoc;
int previous_cable_type = charger->cable_type; */
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
charger->status = val->intval;
break;
/* val->intval : type */
case POWER_SUPPLY_PROP_ONLINE:
charger->cable_type = val->intval;
charger->input_current =
charger->pdata->charging_current[charger->cable_type].input_current_limit;
pr_info("%s:[BATT] cable_type(%d), input_current(%d)mA\n",
__func__, charger->cable_type, charger->input_current);
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
s2mpu06_set_input_current_limit(charger,
min(charger->input_current, val->intval));
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
case POWER_SUPPLY_PROP_CURRENT_NOW:
pr_info("%s: is_charging %d\n", __func__, charger->is_charging);
charger->charging_current = val->intval;
/* set charging current */
if (charger->is_charging)
s2mpu06_set_charging_current(charger->client,
charger->charging_current);
break;
case POWER_SUPPLY_PROP_CURRENT_FULL:
charger->topoff_current = val->intval;
s2mpu06_set_topoff_current(charger->client, 1, val->intval);
s2mpu06_test_read(charger->client);
break;
#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);
charger->pdata->chg_float_voltage = val->intval;
s2mpu06_set_regulation_voltage(charger,
charger->pdata->chg_float_voltage);
break;
#endif
case POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL:
s2mpu06_charger_otg_control(charger, val->intval);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
charger->charge_mode = val->intval;
pr_err("%s: Set Charge Mode :%d\n", __func__, charger->charge_mode);
switch (charger->charge_mode) {
case SEC_BAT_CHG_MODE_BUCK_OFF:
case SEC_BAT_CHG_MODE_CHARGING_OFF:
charger->is_charging = false;
break;
case SEC_BAT_CHG_MODE_CHARGING:
charger->is_charging = true;
break;
}
s2mpu06_enable_charger_switch(charger, charger->is_charging);
break;
default:
return -EINVAL;
}
return 0;
}
#ifdef CONFIG_CHARGER_SYSFS
ssize_t s2mu003_chg_show_attrs(struct device *dev,
const ptrdiff_t offset, char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct s2mu003_charger_data *charger =
container_of(psy, struct s2mu003_charger_data, psy_chg);
int i = 0;
char *str = NULL;
switch (offset) {
case CHG_REG:
i += scnprintf(buf + i, PAGE_SIZE - i, "%x\n",
charger->reg_addr);
break;
case CHG_DATA:
i += scnprintf(buf + i, PAGE_SIZE - i, "%x\n",
charger->reg_data);
break;
case CHG_REGS:
str = kzalloc(sizeof(char) * 256, GFP_KERNEL);
if (!str)
return -ENOMEM;
/* s2mpu06_read_regs(charger->client, str); */
i += scnprintf(buf + i, PAGE_SIZE - i, "%s\n",
str);
kfree(str);
break;
default:
i = -EINVAL;
break;
}
return i;
}
ssize_t s2mu003_chg_store_attrs(struct device *dev,
const ptrdiff_t offset,
const char *buf, size_t count)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct s2mu003_charger_data *charger =
container_of(psy, struct s2mu003_charger_data, psy_chg);
int ret = 0;
int x = 0;
uint8_t data = 0;
switch (offset) {
case CHG_REG:
if (sscanf(buf, "%x\n", &x) == 1) {
charger->reg_addr = x;
data = s2mu003_reg_read(charger->client,
charger->reg_addr);
charger->reg_data = data;
dev_dbg(dev, "%s: (read) addr = 0x%x, data = 0x%x\n",
__func__, charger->reg_addr, charger->reg_data);
ret = count;
}
break;
case CHG_DATA:
if (sscanf(buf, "%x\n", &x) == 1) {
data = (u8)x;
dev_dbg(dev, "%s: (write) addr = 0x%x, data = 0x%x\n",
__func__, charger->reg_addr, data);
ret = s2mu003_reg_write(charger->client,
charger->reg_addr, data);
if (ret < 0) {
dev_dbg(dev, "I2C write fail Reg0x%x = 0x%x\n",
(int)charger->reg_addr, (int)data);
}
ret = count;
}
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
#endif
/* s2mpu06 interrupt service routine */
static irqreturn_t s2mpu06_det_bat_isr(int irq, void *data)
{
struct s2mpu06_charger_data *charger = data;
u8 val;
if (s2mpu06_read_reg(charger->client, S2MPU06_CHG_REG_STATUS2, &val)) {
pr_err("%s: error reading charger status2\n", __func__);
return IRQ_HANDLED;
}
if ((val & DET_BAT_STATUS_MASK) == 0) {
s2mpu06_enable_charger_switch(charger, 0);
pr_err("charger-off if battery removed\n");
}
return IRQ_HANDLED;
}
static irqreturn_t s2mpu06_chg_isr(int irq, void *data)
{
struct s2mpu06_charger_data *charger = data;
u8 val;
if (s2mpu06_read_reg(charger->client, S2MPU06_CHG_REG_STATUS1, &val)) {
pr_err("%s: error reading charger status1\n", __func__);
return IRQ_HANDLED;
}
pr_err("%s , %02x\n " , __func__, val);
if (val & (1 << CHG_STATUS1_CHG_STS)) {
pr_err("add self chg done \n");
/* add chg done code here */
}
return IRQ_HANDLED;
}
static irqreturn_t s2mpu06_ovp_isr(int irq, void *data)
{
struct s2mpu06_charger_data *charger = data;
union power_supply_propval value;
u8 val;
if (s2mpu06_read_reg(charger->client, S2MPU06_CHG_REG_STATUS2, &val)) {
pr_err("%s: error reading charger status2\n", __func__);
return IRQ_HANDLED;
}
pr_err("%s , %02x\n " , __func__, val);
if (val & (1 << CHGVINOVP_STS_SHIFT)) {
pr_err("ovp status\n");
charger->ovp = true;
value.intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
psy_do_property("battery", set,
POWER_SUPPLY_PROP_HEALTH, value);
/* add chg done code here */
}
return IRQ_HANDLED;
}
static int s2mpu06_charger_parse_dt(struct device *dev,
struct s2mpu06_charger_platform_data *pdata)
{
struct device_node *np = of_find_node_by_name(NULL, "s2mpu06-charger");
const u32 *p;
int ret, i , len;
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);
#if defined(CONFIG_FUELGAUGE_S2MPU06)
ret = of_property_read_string(np,
"battery,fuelgauge_name",
(char const **)&pdata->fuelgauge_name);
#endif
pdata->battery_type = of_get_named_gpio(np, "battery,battery_type", 0);
if (gpio_get_value(pdata->battery_type)) {
/* SC_CTRL8 , SET_VF_VBAT , Battery regulation voltage setting */
ret = of_property_read_u32(np, "battery,chg_float_voltage2",
&pdata->chg_float_voltage);
pr_info("%s : 2600mAh %d voltage Battery\n", __func__, pdata->chg_float_voltage);
} else {
/* SC_CTRL8 , SET_VF_VBAT , Battery regulation voltage setting */
ret = of_property_read_u32(np, "battery,chg_float_voltage",
&pdata->chg_float_voltage);
pr_info("%s : 2400mAh %d voltage Battery\n", __func__, pdata->chg_float_voltage);
}
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");
p = of_get_property(np, "battery,input_current_limit", &len);
if (!p)
return 1;
len = len / sizeof(u32);
pdata->charging_current =
kzalloc(sizeof(sec_charging_current_t) * len, GFP_KERNEL);
for (i = 0; i < len; i++) {
ret = of_property_read_u32_index(np,
"battery,input_current_limit", i,
&pdata->charging_current[i].input_current_limit);
if (ret)
pr_info("%s : Input_current_limit is Empty\n", __func__);
}
}
dev_info(dev, "s2mpu06 charger parse dt retval = %d\n", ret);
return ret;
}
/* if need to set s2mpu06 pdata */
static struct of_device_id s2mpu06_charger_match_table[] = {
{ .compatible = "samsung,s2mpu06-charger",},
{},
};
static int s2mpu06_charger_probe(struct platform_device *pdev)
{
struct s2mpu06_dev *s2mpu06 = dev_get_drvdata(pdev->dev.parent);
struct s2mpu06_platform_data *pdata = dev_get_platdata(s2mpu06->dev);
struct s2mpu06_charger_data *charger;
int ret = 0;
pr_err("%s:[BATT] S2MPU06 Charger driver probe\n", __func__);
charger = kzalloc(sizeof(*charger), GFP_KERNEL);
if (!charger)
return -ENOMEM;
mutex_init(&charger->io_lock);
charger->dev = &pdev->dev;
charger->client = s2mpu06->charger;
charger->s2mpu06 = s2mpu06;
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 = s2mpu06_charger_parse_dt(&pdev->dev, charger->pdata);
if (ret < 0)
goto err_parse_dt;
platform_set_drvdata(pdev, charger);
charger->dev_id = s2mpu06->pmic_rev;
dev_info(&charger->client->dev, "%s : DEV ID : 0x%x\n", __func__,
charger->dev_id);
if (charger->pdata->charger_name == NULL)
charger->pdata->charger_name = "sec-charger";
charger->psy_chg.name = charger->pdata->charger_name;
charger->psy_chg.type = POWER_SUPPLY_TYPE_UNKNOWN;
charger->psy_chg.get_property = sec_chg_get_property;
charger->psy_chg.set_property = sec_chg_set_property;
charger->psy_chg.properties = s2mpu06_charger_props;
charger->psy_chg.num_properties = ARRAY_SIZE(s2mpu06_charger_props);
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;
}
s2mpu06_chg_init(charger);
/*
* irq request
* if you need to add irq , please refer below code.
*/
charger->irq_det_bat = pdata->irq_base + S2MPU06_CHG_IRQ_BATP_INT1;
ret = request_threaded_irq(charger->irq_det_bat, NULL,
s2mpu06_det_bat_isr, 0 , "det-bat-in-irq", charger);
if (ret < 0) {
dev_err(s2mpu06->dev, "%s: Fail to request det bat in IRQ: %d: %d\n",
__func__, charger->irq_det_bat, ret);
goto err_reg_irq;
}
charger->irq_chg = pdata->irq_base + S2MPU06_CHG_IRQ_CHGSTS_INT3;
ret = request_threaded_irq(charger->irq_chg, NULL,
s2mpu06_chg_isr, 0 , "chg-irq", charger);
if (ret < 0) {
dev_err(s2mpu06->dev, "%s: Fail to request det bat in IRQ: %d: %d\n",
__func__, charger->irq_chg, ret);
goto err_reg_irq;
}
charger->irq_ovp = pdata->irq_base + S2MPU06_CHG_IRQ_CINOVP_INT1;
ret = request_threaded_irq(charger->irq_ovp, NULL,
s2mpu06_ovp_isr, 0 , "chg-ovp", charger);
if (ret < 0) {
dev_err(s2mpu06->dev, "%s: Fail to request det bat in IRQ: %d: %d\n",
__func__, charger->irq_chg, ret);
goto err_reg_irq;
}
s2mpu06_test_read(charger->client);
charger->battery_cable_type = POWER_SUPPLY_TYPE_BATTERY;
charger->cable_type = POWER_SUPPLY_TYPE_BATTERY;
pr_info("%s:[BATT] S2MPU06 charger driver loaded OK\n", __func__);
return 0;
err_reg_irq:
power_supply_unregister(&charger->psy_chg);
err_power_supply_register:
err_parse_dt:
err_parse_dt_nomem:
mutex_destroy(&charger->io_lock);
kfree(charger);
return ret;
}
static int s2mpu06_charger_remove(struct platform_device *pdev)
{
struct s2mpu06_charger_data *charger =
platform_get_drvdata(pdev);
power_supply_unregister(&charger->psy_chg);
mutex_destroy(&charger->io_lock);
kfree(charger);
return 0;
}
#if defined CONFIG_PM
static int s2mpu06_charger_suspend(struct device *dev)
{
return 0;
}
static int s2mpu06_charger_resume(struct device *dev)
{
return 0;
}
#else
#define s2mpu06_charger_suspend NULL
#define s2mpu06_charger_resume NULL
#endif
static void s2mpu06_charger_shutdown(struct device *dev)
{
pr_info("%s: S2MPU06 Charger driver shutdown\n", __func__);
}
static SIMPLE_DEV_PM_OPS(s2mpu06_charger_pm_ops, s2mpu06_charger_suspend,
s2mpu06_charger_resume);
static struct platform_driver s2mpu06_charger_driver = {
.driver = {
.name = "s2mpu06-charger",
.owner = THIS_MODULE,
.of_match_table = s2mpu06_charger_match_table,
.pm = &s2mpu06_charger_pm_ops,
.shutdown = s2mpu06_charger_shutdown,
},
.probe = s2mpu06_charger_probe,
.remove = s2mpu06_charger_remove,
};
static int __init s2mpu06_charger_init(void)
{
int ret = 0;
ret = platform_driver_register(&s2mpu06_charger_driver);
return ret;
}
module_init(s2mpu06_charger_init);
static void __exit s2mpu06_charger_exit(void)
{
platform_driver_unregister(&s2mpu06_charger_driver);
}
module_exit(s2mpu06_charger_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Samsung Electronics");
MODULE_DESCRIPTION("Charger driver for S2MPU06");
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