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 void max8907c_power_off(void)
{
if (!max8907c_client)
return;
max8907c_set_bits(max8907c_client, MAX8907C_REG_RESET_CNFG,
MAX8907C_MASK_POWER_OFF, 0x40);
}
int max8907c_power_off(void)
{
if (!max8907c_client)
return -EINVAL;
//
#if defined (CONFIG_MACH_STAR) || defined (CONFIG_MACH_BSSQ)
// Disable WLED (Qwerty LED or touch LED)
max8907c_reg_write(max8907c_client, MAX8907C_REG_ILED_CNTL, 0x00);
// Disable all regulators i2c controlled, set value as i2c_enabled, discharge res connected, output disabled
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL3, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL4, 0x1e);
// max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL5, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL6, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL7, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL8, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL9, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL10, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL11, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL12, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL13, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL14, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL15, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL16, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL17, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL18, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL19, 0x1e);
max8907c_reg_write(max8907c_client, MAX8907C_REG_LDOCTL20, 0x1e);
// Disable PWREN, SW Power off SEQ1, SFT reset
return max8907c_set_bits(max8907c_client, MAX8907C_REG_RESET_CNFG,
0xe0, 0x60);
#else
return max8907c_set_bits(max8907c_client, MAX8907C_REG_RESET_CNFG,
MAX8907C_MASK_POWER_OFF, 0x40);
#endif
//
}
static void max8907c_set_charger(struct max8907c_charger *charger)
{
struct max8907c_charger_pdata *pdata = charger->pdata;
int ret;
if (charger->online) {
ret = max8907c_reg_write(charger->i2c, MAX8907C_REG_CHG_CNTL1,
(pdata->topoff_threshold << 5) |
(pdata->restart_hysteresis << 3) |
(pdata->fast_charging_current));
if (unlikely(ret != 0))
pr_err("Failed to set CHG_CNTL1: %d\n", ret);
ret = max8907c_set_bits(charger->i2c, MAX8907C_REG_CHG_CNTL2,
0x30, pdata->fast_charger_time << 4);
if (unlikely(ret != 0))
pr_err("Failed to set CHG_CNTL2: %d\n", ret);
} else {
ret = max8907c_set_bits(charger->i2c, MAX8907C_REG_CHG_CNTL1, 0x80, 0x1);
if (unlikely(ret != 0))
pr_err("Failed to set CHG_CNTL1: %d\n", ret);
}
}
int max8907c_pwr_en_attach(void)
{
int ret;
if (!max8907c_client)
return -EINVAL;
/* No sequencer delay for CPU rail when it is attached */
ret = max8907c_reg_write(max8907c_client, MAX8907C_REG_SDSEQCNT1,
MAX8907C_DELAY_CNT0);
if (ret != 0)
return ret;
return max8907c_set_bits(max8907c_client, MAX8907C_REG_SDCTL1,
MAX8907C_MASK_CTL_SEQ, MAX8907C_CTL_SEQ);
}
static int max8907c_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
printk(KERN_WARNING "[MAX8907C] probe called.");
struct max8907c *max8907c;
struct max8907c_platform_data *pdata = i2c->dev.platform_data;
int ret;
int i;
max8907c = kzalloc(sizeof(struct max8907c), GFP_KERNEL);
if (max8907c == NULL)
return -ENOMEM;
max8907c->dev = &i2c->dev;
dev_set_drvdata(max8907c->dev, max8907c);
max8907c->i2c_power = i2c;
i2c_set_clientdata(i2c, max8907c);
max8907c->i2c_rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
i2c_set_clientdata(max8907c->i2c_rtc, max8907c);
//
max8907c->i2c_adc = i2c_new_dummy(i2c->adapter, ADC_I2C_ADDR);
i2c_set_clientdata(max8907c->i2c_adc, max8907c);
//
mutex_init(&max8907c->io_lock);
for (i = 0; i < ARRAY_SIZE(cells); i++)
cells[i].mfd_data = max8907c;
ret = mfd_add_devices(max8907c->dev, -1, cells, ARRAY_SIZE(cells),
NULL, 0);
if (ret != 0) {
i2c_unregister_device(max8907c->i2c_rtc);
kfree(max8907c);
pr_debug("max8907c: failed to add MFD devices %X\n", ret);
return ret;
}
max8907c_client = i2c;
max8907c_irq_init(max8907c, i2c->irq, pdata->irq_base);
ret = max8097c_add_subdevs(max8907c, pdata);
if (pdata->max8907c_setup)
return pdata->max8907c_setup();
//
else{
int ret;
ret = max8907c_set_bits(max8907c_client, MAX8907C_REG_RESET_CNFG,
MAX8907C_MASK_PWR_EN, MAX8907C_PWR_EN);
if (ret != 0)
return ret;
}
//
return ret;
}
