static void smb347_set_charging_state(struct smb_charger_callbacks *ptr,
int cable_status)
{
struct smb347_chg_data *chg = container_of(ptr,
struct smb347_chg_data, callbacks);
if (cable_status) {
/* Init smb347 charger */
smb347_charger_init(chg);
switch (cable_status) {
case CABLE_TYPE_AC:
/* Input current limit : DCIN 1800mA, USBIN HC 1800mA */
smb347_i2c_write(chg->client,
SMB347_INPUT_CURRENTLIMIT, 0x66);
/* CommandB : High-current mode */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x03);
pr_info("%s : 1.8A charging enable\n", __func__);
break;
case CABLE_TYPE_USB:
/* CommandB : USB5 */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x02);
pr_info("%s : LOW(USB5) charging enable\n", __func__);
break;
default:
/* CommandB : USB1 */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x00);
pr_info("%s : LOW(USB1) charging enable\n", __func__);
break;
}
}
}
void smb347_set_charging_current(int set_current)
{
struct smb347_chg_data *chg = smb347_chg;
if (set_current > 450) {
/* CommandB : High-current mode */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x03);
udelay(10);
} else {
/* CommandB : USB5 */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x02);
udelay(10);
}
pr_debug("%s: Set charging current as %dmA.\n", __func__, set_current);
}
static void smb347_i2c_write_array(struct i2c_client *client,
u8 *buf, int size)
{
int i;
for (i = 0; i < size; i += 3)
smb347_i2c_write(client, (u8) (*(buf + i)), (buf + i) + 1);
}
static void smb347_set_charging_state(int enable, int charging_mode)
{
struct smb347_chg_data *chg = smb347_chg;
pr_info("%s : enable(%d), charging_mode(%d)\n",
__func__, enable, charging_mode);
if (enable) {
/* Only for P4C rev0.2, Check vbus for opeartion charger */
if (!smb347_check_powersource(chg))
return;
/* Init smb347 charger */
smb347_charger_init(chg);
switch (charging_mode) {
case CABLE_TYPE_TA:
/* Input current limit : DCIN 1800mA, USBIN HC 1800mA */
smb347_i2c_write(chg->client,
SMB347_INPUT_CURRENTLIMIT, 0x66);
/* CommandB : High-current mode */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x03);
pr_info("%s : 1.8A charging enable\n", __func__);
break;
case CABLE_TYPE_DESKDOCK:
/* Input current limit : DCIN 1500mA, USBIN HC 1500mA */
smb347_i2c_write(chg->client,
SMB347_INPUT_CURRENTLIMIT, 0x55);
/* CommandB : High-current mode */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x03);
pr_info("%s : 1.5A charging enable\n", __func__);
break;
case CABLE_TYPE_USB:
/* CommandB : USB5 */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x02);
pr_info("%s : LOW(USB5) charging enable\n", __func__);
break;
default:
/* CommandB : USB1 */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x00);
pr_info("%s : LOW(USB1) charging enable\n", __func__);
break;
}
smb347_enable_charging(chg);
} else {
smb347_disable_charging(chg);
}
smb347_test_read();
}
static void smb347_allow_volatile_writes(struct i2c_client *client)
{
int val, reg;
u8 data;
reg = SMB347_COMMAND_A;
val = smb347_i2c_read(client, reg, &data);
if ((val >= 0) && !(data & 0x80)) {
dev_dbg(&client->dev,
"%s : reg(0x%02x): 0x%02x", __func__, reg, data);
data |= (0x1 << 7);
if (smb347_i2c_write(client, reg, &data) < 0)
dev_err(&client->dev, "%s : error!\n", __func__);
val = smb347_i2c_read(client, reg, &data);
if (val >= 0) {
data = (u8) data;
dev_dbg(&client->dev, " => 0x%02x\n", data);
}
}
}
static void smb347_set_command(struct i2c_client *client,
int reg, int datum)
{
int val;
u8 data = 0;
val = smb347_i2c_read(client, reg, &data);
if (val >= 0) {
dev_dbg(&client->dev, "%s : reg(0x%02x): 0x%02x",
__func__, reg, data);
if (data != datum) {
data = datum;
if (smb347_i2c_write(client, reg, &data) < 0)
dev_err(&client->dev,
"%s : error!\n", __func__);
val = smb347_i2c_read(client, reg, &data);
if (val >= 0)
dev_dbg(&client->dev, " => 0x%02x\n", data);
}
}
}
ssize_t sec_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;
smb347_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);
smb347_i2c_write(chg->client,
chg->reg_addr, &data);
ret = count;
}
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static void smb347_charger_init(struct smb347_chg_data *chg)
{
/* Allow volatile writes to CONFIG registers */
smb347_i2c_write(chg->client, SMB347_COMMAND_A, 0x80);
/* Command B : USB1 mode, USB mode */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x00);
/* Charge curr : Fast-chg 2200mA */
/* Pre-charge curr 250mA, Term curr 250mA */
smb347_i2c_write(chg->client, SMB347_CHARGE_CURRENT, 0xDD);
/* Pin enable control : Charger enable control EN Pin - Active Low */
/* : USB5/1/HC or USB9/1.5/HC Control - Register Control */
/* : USB5/1/HC Input state - Tri-state Input */
smb347_i2c_write(chg->client, SMB347_PIN_ENABLE_CONTROL, 0x60);
/* Input current limit : DCIN 1800mA, USBIN HC 1800mA */
smb347_i2c_write(chg->client, SMB347_INPUT_CURRENTLIMIT, 0x66);
/* Various func. : USBIN primary input, VCHG func. enable */
smb347_i2c_write(chg->client, SMB347_VARIOUS_FUNCTIONS, 0x87);
/* Float voltage : 4.2V */
smb347_i2c_write(chg->client, SMB347_FLOAT_VOLTAGE, 0x63);
/* Charge control : Auto recharge disable, APSD disable */
smb347_i2c_write(chg->client, SMB347_CHARGE_CONTROL, 0x80);
/* STAT, Timer control : STAT active low, Complete time out 1527min. */
smb347_i2c_write(chg->client, SMB347_STAT_TIMERS_CONTROL, 0x1A);
/* Therm control : Therm monitor disable */
smb347_i2c_write(chg->client, SMB347_THERM_CONTROL_A, 0x7F);
/* USB selection : USB2.0(100mA/500mA), INOK polarity */
/* Active low */
smb347_i2c_write(chg->client, SMB347_SYSOK_USB30_SELECTION, 0x08);
/* Other control */
smb347_i2c_write(chg->client, SMB347_OTHER_CONTROL_A, 0x1D);
/* OTG tlim therm control */
smb347_i2c_write(chg->client, SMB347_OTG_TLIM_THERM_CONTROL, 0x3F);
/* Limit cell temperature */
smb347_i2c_write(chg->client,
SMB347_LIMIT_CELL_TEMPERATURE_MONITOR, 0x01);
/* Fault interrupt : Clear */
smb347_i2c_write(chg->client, SMB347_FAULT_INTERRUPT, 0x00);
/* STATUS ingerrupt : Clear */
smb347_i2c_write(chg->client, SMB347_STATUS_INTERRUPT, 0x00);
msleep(50);
}
static void smb347_charger_init(struct smb347_chg_data *chg)
{
pr_info("%s\n", __func__);
/* Only for P4C rev0.2, Check vbus for opeartion charger */
if (!smb347_check_powersource(chg))
return;
/* Set GPIO_TA_EN as HIGH, charging disable */
smb347_disable_charging(chg);
mdelay(100);
/* Allow volatile writes to CONFIG registers */
smb347_i2c_write(chg->client, SMB347_COMMAND_A, 0x80);
/* Command B : USB1 mode, USB mode */
smb347_i2c_write(chg->client, SMB347_COMMAND_B, 0x00);
/* Charge curr : Fast-chg 2200mA */
/* Pre-charge curr 250mA, Term curr 250mA */
smb347_i2c_write(chg->client, SMB347_CHARGE_CURRENT, 0xDD);
/* Pin enable control : Charger enable control EN Pin - Active Low */
/* : USB5/1/HC or USB9/1.5/HC Control - Register Control */
/* : USB5/1/HC Input state - Tri-state Input */
smb347_i2c_write(chg->client, SMB347_PIN_ENABLE_CONTROL, 0x60);
/* Input current limit : DCIN 1800mA, USBIN HC 1800mA */
smb347_i2c_write(chg->client, SMB347_INPUT_CURRENTLIMIT, 0x66);
/* Various func. : USBIN primary input, VCHG func. enable */
smb347_i2c_write(chg->client, SMB347_VARIOUS_FUNCTIONS, 0xA7);
/* Float voltage : 4.2V */
smb347_i2c_write(chg->client, SMB347_FLOAT_VOLTAGE, 0x63);
/* Charge control : Auto recharge disable, APSD disable */
smb347_i2c_write(chg->client, SMB347_CHARGE_CONTROL, 0x80);
/* STAT, Timer control : STAT active low, Complete time out 1527min. */
smb347_i2c_write(chg->client, SMB347_STAT_TIMERS_CONTROL, 0x1A);
/* Therm control : Therm monitor disable */
smb347_i2c_write(chg->client, SMB347_THERM_CONTROL_A, 0xBF);
/* USB selection : USB2.0(100mA/500mA), INOK polarity */
if ((system_rev >= 2) && (system_rev <= 5)) {
/* Active high */
smb347_i2c_write(chg->client, SMB347_SYSOK_USB30_SELECTION,
0x09);
} else {
/* Active low */
smb347_i2c_write(chg->client, SMB347_SYSOK_USB30_SELECTION,
0x08);
}
/* Other control */
smb347_i2c_write(chg->client, SMB347_OTHER_CONTROL_A, 0x0D);
/* OTG tlim therm control */
smb347_i2c_write(chg->client, SMB347_OTG_TLIM_THERM_CONTROL, 0x3F);
/* Limit cell temperature */
smb347_i2c_write(chg->client, SMB347_LIMIT_CELL_TEMPERATURE_MONITOR,
0x01);
/* Fault interrupt : Clear */
smb347_i2c_write(chg->client, SMB347_FAULT_INTERRUPT, 0x00);
/* STATUS ingerrupt : Clear */
smb347_i2c_write(chg->client, SMB347_STATUS_INTERRUPT, 0x00);
}