static u8 SM5414_set_topoff_current_limit_data(
struct i2c_client *client, int topoff_current)
{
u8 data;
u8 topoff_reg;
SM5414_i2c_read(client, SM5414_CHGCTRL4, &data);
data &= TOPOFF_MASK;
if(topoff_current < 100)
topoff_current = 100;
else if (topoff_current > 650)
topoff_current = 650;
topoff_reg = (topoff_current - 100) / 50;
data = data | (topoff_reg<<3);
SM5414_i2c_write(client, SM5414_CHGCTRL4, &data);
SM5414_i2c_read(client, SM5414_CHGCTRL4, &data);
dev_dbg(&client->dev,
"%s : SM5414_CHGCTRL4 (Top-off limit) : 0x%02x\n",
__func__, data);
return data;
}
static int SM5414_get_charging_status(struct i2c_client *client)
{
int status = POWER_SUPPLY_STATUS_UNKNOWN;
struct sec_charger_info *charger = i2c_get_clientdata(client);
int nCHG;
u8 int2, chg_en;
union power_supply_propval value;
SM5414_i2c_read(client, SM5414_INT2, &int2);
SM5414_i2c_read(client, SM5414_CTRL, &chg_en);
if((int2 & SM5414_INT2_DONE) || (int2 & SM5414_INT2_TOPOFF)) {
psy_do_property(charger->pdata->fuelgauge_name, get,
POWER_SUPPLY_PROP_CAPACITY, value);
if ((value.intval > 96) &&
(charger->cable_type != POWER_SUPPLY_TYPE_BATTERY)) {
status = POWER_SUPPLY_STATUS_FULL;
charger->is_fullcharged = true;
dev_info(&client->dev,
"%s : Power Supply Full\n", __func__);
}
} else if (chg_en & CHARGE_EN) {
nCHG = gpio_get_value(charger->pdata->chg_gpio_en);
if ((nCHG) || (charger_health != POWER_SUPPLY_HEALTH_GOOD))
status = POWER_SUPPLY_STATUS_DISCHARGING;
else
status = POWER_SUPPLY_STATUS_CHARGING;
} else {
status = POWER_SUPPLY_STATUS_DISCHARGING;
}
return (int)status;
}
bool SM5414_hal_chg_init(struct i2c_client *client)
{
u8 reg_data;
u8 int1 = 0;
struct sec_charger_info *charger = i2c_get_clientdata(client);
dev_info(&client->dev, "%s: SM5414 Charger init (Starting)!! \n", __func__);
charger->is_fullcharged = false;
SM5414_i2c_read(client, SM5414_INT1, &int1);
dev_info(&client->dev,
"%s : SM5414_INT1 : 0x%02x\n", __func__, int1);
reg_data = 0x1F;
SM5414_i2c_write(client, SM5414_INTMASK1, ®_data);
reg_data = 0xFC;
SM5414_i2c_write(client, SM5414_INTMASK2, ®_data);
SM5414_i2c_read(client, SM5414_CHGCTRL1, ®_data);
reg_data &= ~SM5414_CHGCTRL1_AUTOSTOP;
SM5414_i2c_write(client, SM5414_CHGCTRL1, ®_data);
(void) debugfs_create_file("SM5414_regs",
S_IRUGO, NULL, (void *)charger, &SM5414_debugfs_fops);
return true;
}
static u8 SM5414_set_toggle_charger(struct i2c_client *client, int enable)
{
u8 chg_en=0;
u8 data=0;
SM5414_i2c_read(client, SM5414_CTRL, &chg_en);
if (enable)
chg_en |= CHARGE_EN;
else
chg_en &= ~CHARGE_EN;
SM5414_i2c_write(client, SM5414_CTRL, &chg_en);
dev_info(&client->dev, "%s: SM5414 Charger toggled!! \n", __func__);
SM5414_i2c_read(client, SM5414_CTRL, &chg_en);
dev_info(&client->dev,
"%s : chg_en value(07h register): 0x%02x\n", __func__, chg_en);
SM5414_i2c_read(client, SM5414_CHGCTRL2, &data);
dev_info(&client->dev,
"%s : SM5414_CHGCTRL2 value: 0x%02x", __func__, data);
return chg_en;
}
static u8 SM5414_set_input_current_limit_data(
struct i2c_client *client, int input_current)
{
u8 set_reg, curr_reg = 0;
u8 chg_en;
if(input_current < 100)
input_current = 100;
else if (input_current >= 2050)
input_current = 2050;
set_reg = (input_current - 100) / 50;
curr_reg = ((input_current % 100) >= 50) ? 1 : 0;
SM5414_i2c_read(client, SM5414_CTRL, &chg_en);
if (chg_en & CHARGE_EN) {
SM5414_i2c_write(client, SM5414_VBUSCTRL, &set_reg);
} else {
while (set_reg >= curr_reg) {
SM5414_i2c_write(client, SM5414_VBUSCTRL, &curr_reg);
curr_reg += 2;
msleep(50);
};
}
SM5414_i2c_read(client, SM5414_VBUSCTRL, &curr_reg);
dev_dbg(&client->dev,
"%s : SM5414_VBUSCTRL (Input limit) : 0x%02x\n",
__func__, curr_reg);
return curr_reg;
}
static u8 SM5414_set_float_voltage_data(
struct i2c_client *client, int float_voltage)
{
u8 data, float_reg;
SM5414_i2c_read(client, SM5414_CHGCTRL3, &data);
data &= BATREG_MASK;
if (float_voltage < 4100)
float_voltage = 4100;
else if (float_voltage > 4475)
float_voltage = 4475;
float_reg = (float_voltage - 4100) / 25;
data |= (float_reg << 4);
SM5414_i2c_write(client, SM5414_CHGCTRL3, &data);
SM5414_i2c_read(client, SM5414_CHGCTRL3, &data);
dev_dbg(&client->dev,
"%s : SM5414_CHGCTRL3 (float) : 0x%02x\n", __func__, data);
return data;
}
static int SM5414_get_charging_health(struct i2c_client *client)
{
static int health = POWER_SUPPLY_HEALTH_GOOD;
struct sec_charger_info *charger = i2c_get_clientdata(client);
u8 int1;
SM5414_i2c_read(client, SM5414_INT1, &int1);
dev_info(&client->dev,
"%s : SM5414_INT1 : 0x%02x\n", __func__, int1);
if (int1 & SM5414_INT1_VBUSOVP) {
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
charger_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
} else if (int1 & SM5414_INT1_VBUSUVLO) {
msleep(1000);
if (charger->cable_type != POWER_SUPPLY_TYPE_BATTERY) {
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
charger_health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
}
} else if (int1 & SM5414_INT1_VBUSINOK) {
health = POWER_SUPPLY_HEALTH_GOOD;
charger_health = POWER_SUPPLY_HEALTH_GOOD;
}
return (int)health;
}
static void SM5414_read_regs(struct i2c_client *client, char *str)
{
u8 data = 0;
u32 addr = 0;
//0x00~02 are R/C (read and clear)
for (addr = SM5414_INTMASK1; addr <= SM5414_CHGCTRL5; addr++) {
SM5414_i2c_read(client, addr, &data);
sprintf(str+strlen(str), "0x%x, ", data);
}
}
static void SM5414_test_read(struct i2c_client *client)
{
u8 data = 0;
u32 addr = 0;
//0x00~02 are R/C
for (addr = SM5414_INTMASK1; addr <= SM5414_CHGCTRL5; addr++) {
SM5414_i2c_read(client, addr, &data);
dev_info(&client->dev,
"SM5414 addr : 0x%02x data : 0x%02x\n", addr, data);
}
}
static void SM5414_charger_otg_control(
struct i2c_client *client)
{
struct sec_charger_info *charger = i2c_get_clientdata(client);
u8 data;
//turn on/off ENBOOST
if (charger->cable_type ==
POWER_SUPPLY_TYPE_BATTERY) {
dev_info(&client->dev, "%s : turn off OTG\n", __func__);
/* turn off OTG */
SM5414_i2c_read(client, SM5414_CTRL, &data);
data &= 0xfe;
SM5414_i2c_write(client, SM5414_CTRL, &data);
} else {
dev_info(&client->dev, "%s : turn on OTG\n", __func__);
/* turn on OTG */
SM5414_i2c_read(client, SM5414_CTRL, &data);
data |= 0x01;
SM5414_i2c_write(client, SM5414_CTRL, &data);
}
}
bool sec_hal_chg_get_property(struct i2c_client *client,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct sec_charger_info *charger = i2c_get_clientdata(client);
u8 data;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
if (charger->is_fullcharged)
val->intval = POWER_SUPPLY_STATUS_FULL;
else
val->intval = SM5414_get_charging_status(client);
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = charger_health;
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
break;
// Have to mention the issue about POWER_SUPPLY_PROP_CHARGE_NOW to Marvel
case POWER_SUPPLY_PROP_CHARGE_NOW:
case POWER_SUPPLY_PROP_CURRENT_MAX:
case POWER_SUPPLY_PROP_CURRENT_AVG:
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (charger->charging_current) {
SM5414_i2c_read(client, SM5414_VBUSCTRL, &data);
data &= 0x3f;
val->intval = (100 + (data * 50));
if (val->intval < 2050)
val->intval = (100 + (data * 50));
/*dev_dbg(&client->dev,
"%s 1: set-current(%dmA), current now(%dmA)\n",
__func__, charger->charging_current, val->intval);*/
} else {
val->intval = 100;
/*dev_dbg(&client->dev,
"%s 2: set-current(%dmA), current now(%dmA)\n",
__func__, charger->charging_current, val->intval);*/
}
break;
case POWER_SUPPLY_PROP_POWER_STATUS:
val->intval = POWER_SUPPLY_PWR_RDY_UNKNOWN;
break;
default:
return false;
}
return true;
}
static int SM5414_debugfs_show(struct seq_file *s, void *data)
{
struct sec_charger_info *charger = s->private;
u8 reg;
u8 reg_data;
seq_printf(s, "SM CHARGER IC :\n");
seq_printf(s, "==================\n");
for (reg = SM5414_INTMASK1; reg <= SM5414_CHGCTRL5; reg++) {
SM5414_i2c_read(charger->client, reg, ®_data);
seq_printf(s, "0x%02x:\t0x%02x\n", reg, reg_data);
}
seq_printf(s, "\n");
return 0;
}
static u8 SM5414_set_fast_charging_current_data(
struct i2c_client *client, int fast_charging_current)
{
u8 data = 0;
if(fast_charging_current < 100)
fast_charging_current = 100;
else if (fast_charging_current > 2500)
fast_charging_current = 2500;
data = (fast_charging_current - 100) / 50;
SM5414_i2c_write(client, SM5414_CHGCTRL2, &data);
SM5414_i2c_read(client, SM5414_CHGCTRL2, &data);
dev_dbg(&client->dev,
"%s : SM5414_CHGCTRL2 (fast) : 0x%02x\n", __func__, data);
return data;
}
ssize_t SM5414_hal_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 sec_charger_info *chg =
container_of(psy, struct sec_charger_info, psy_chg);
int ret = 0;
int x = 0;
u8 data = 0;
switch (offset) {
case CHG_REG:
if (sscanf(buf, "%x\n", &x) == 1) {
chg->reg_addr = x;
SM5414_i2c_read(chg->client,
chg->reg_addr, &data);
chg->reg_data = data;
dev_dbg(dev, "%s: (read) addr = 0x%x, data = 0x%x\n",
__func__, chg->reg_addr, chg->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__, chg->reg_addr, data);
SM5414_i2c_write(chg->client,
chg->reg_addr, &data);
ret = count;
}
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static void SM5414_charger_function_control(
struct i2c_client *client)
{
struct sec_charger_info *charger = i2c_get_clientdata(client);
union power_supply_propval value;
u8 ctrl;
u8 chg_en;
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->charging_current < 0) {
dev_info(&client->dev,
"%s : OTG is activated. Ignore command!\n", __func__);
return;
}
if (charger->cable_type == POWER_SUPPLY_TYPE_BATTERY) {
/* Disable Charger */
dev_info(&client->dev,
"%s : Disable Charger, Battery Supply!\n", __func__);
// nCHG_EN is logic low so set 1 to disable charger
charger->is_fullcharged = false;
gpio_direction_output((charger->pdata->chg_gpio_en), 1);
SM5414_set_toggle_charger(client, 0);
} else {
psy_do_property(charger->pdata->fuelgauge_name, get,
POWER_SUPPLY_PROP_CAPACITY, value);
if (value.intval > 0) {
/* Suspend enable for register reset */
ctrl = 0x44;
SM5414_i2c_write(client, SM5414_CTRL, &ctrl);
msleep(20);
ctrl = 0x40;
SM5414_i2c_write(client, SM5414_CTRL, &ctrl);
}
dev_info(&client->dev, "%s : float voltage (%dmV)\n",
__func__, charger->pdata->chg_float_voltage);
/* Set float voltage */
SM5414_set_float_voltage_data(
client, charger->pdata->chg_float_voltage);
dev_info(&client->dev, "%s : topoff current (%dmA)\n",
__func__, charger->pdata->charging_current[
charger->cable_type].full_check_current_1st);
SM5414_set_topoff_current_limit_data(
client, charger->pdata->charging_current[
charger->cable_type].full_check_current_1st);
SM5414_i2c_read(client, SM5414_CTRL, &chg_en);
if (!(chg_en & CHARGE_EN)) {
SM5414_set_input_current_limit_data(client, 100);
// nCHG_EN is logic low so set 0 to enable charger
gpio_direction_output((charger->pdata->chg_gpio_en), 0);
SM5414_set_toggle_charger(client, 1);
msleep(100);
/* Input current limit */
dev_info(&client->dev, "%s : input current (%dmA)\n",
__func__, charger->charging_current_max);
SM5414_set_input_current_limit_data(
client, charger->charging_current_max);
}
/* Set fast charge current */
dev_info(&client->dev, "%s : fast charging current (%dmA), siop_level=%d\n",
__func__, charger->charging_current, charger->siop_level);
SM5414_set_fast_charging_current_data(
client, charger->charging_current);
dev_info(&client->dev,
"%s : Enable Charger!\n", __func__);
}
}