int max8907c_pwr_en_config(void)
{
int ret;
u8 data;
if (!max8907c_client)
return -EINVAL;
/*
* Enable/disable PWREN h/w control mechanism (PWREN signal must be
* inactive = high at this time)
*/
ret = max8907c_set_bits(max8907c_client, MAX8907C_REG_RESET_CNFG,
MAX8907C_MASK_PWR_EN, MAX8907C_PWR_EN);
if (ret != 0)
return ret;
/*
* When enabled, connect PWREN to SEQ2 by clearing SEQ2 configuration
* settings for silicon revision that requires s/w WAR. On other
* MAX8907B revisions PWREN is always connected to SEQ2.
*/
data = max8907c_reg_read(max8907c_client, MAX8907C_REG_II2RR);
if (data == MAX8907B_II2RR_PWREN_WAR) {
data = 0x00;
ret = max8907c_reg_write(max8907c_client, MAX8907C_REG_SEQ2CNFG, data);
}
return ret;
}
static int max8907c_charger_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
const static int types[] = {
POWER_SUPPLY_CHARGE_TYPE_TRICKLE,
POWER_SUPPLY_CHARGE_TYPE_FAST,
POWER_SUPPLY_CHARGE_TYPE_FAST,
POWER_SUPPLY_CHARGE_TYPE_NONE,
};
int ret = -ENODEV;
int status;
struct max8907c_charger *charger = dev_get_drvdata(psy->dev->parent);
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = charger->online;
ret = 0;
break;
case POWER_SUPPLY_PROP_STATUS:
/* Get charger status from CHG_EN_STAT */
status = max8907c_reg_read(charger->i2c, MAX8907C_REG_CHG_STAT);
val->intval = ((status & 0x10) == 0x10) ?
POWER_SUPPLY_STATUS_CHARGING :
POWER_SUPPLY_STATUS_NOT_CHARGING;
ret = 0;
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
/* Get charging type from CHG_MODE */
status = max8907c_reg_read(charger->i2c, MAX8907C_REG_CHG_STAT);
val->intval = types[(status & 0x0C) >> 2];
ret = 0;
break;
default:
val->intval = 0;
ret = -EINVAL;
break;
}
return ret;
}
static __devinit int max8907c_charger_probe(struct platform_device *pdev)
{
struct max8907c_charger_pdata *pdata = pdev->dev.platform_data;
struct max8907c_charger *charger = 0;
struct max8907c *chip = dev_get_drvdata(pdev->dev.parent);
int ret;
charger = kzalloc(sizeof(*charger), GFP_KERNEL);
if (!charger)
return -ENOMEM;
charger->pdata = pdata;
charger->online = 0;
charger->chip = chip;
charger->i2c = chip->i2c_power;
platform_set_drvdata(pdev, charger);
ret = max8907c_reg_read(charger->i2c, MAX8907C_REG_CHG_STAT);
if (ret & (1 << 7)) {
charger->online = 1;
max8907c_set_charger(charger);
}
ret = request_threaded_irq(chip->irq_base + MAX8907C_IRQ_VCHG_DC_F, NULL,
max8907c_charger_isr, IRQF_ONESHOT,
"power-remove", charger);
if (unlikely(ret < 0)) {
pr_debug("max8907c: failed to request IRQ %X\n", ret);
goto out;
}
ret = request_threaded_irq(chip->irq_base + MAX8907C_IRQ_VCHG_DC_R, NULL,
max8907c_charger_isr, IRQF_ONESHOT,
"power-insert", charger);
if (unlikely(ret < 0)) {
pr_debug("max8907c: failed to request IRQ %X\n", ret);
goto out1;
}
ret = power_supply_register(&pdev->dev, &max8907c_charger_ps);
if (unlikely(ret != 0)) {
pr_err("Failed to register max8907c_charger driver: %d\n", ret);
goto out2;
}
return 0;
out2:
free_irq(chip->irq_base + MAX8907C_IRQ_VCHG_DC_R, charger);
out1:
free_irq(chip->irq_base + MAX8907C_IRQ_VCHG_DC_F, charger);
out:
kfree(charger);
return ret;
}