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;
}
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 __devexit int max8907c_charger_remove(struct platform_device *pdev)
{
struct max8907c_charger *charger = platform_get_drvdata(pdev);
struct max8907c *chip = charger->chip;
int ret;
ret = max8907c_reg_write(charger->i2c, MAX8907C_REG_CHG_IRQ1_MASK, 0xFF);
if (unlikely(ret != 0)) {
pr_err("Failed to set IRQ1_MASK: %d\n", ret);
goto out;
}
free_irq(chip->irq_base + MAX8907C_IRQ_VCHG_DC_R, charger);
free_irq(chip->irq_base + MAX8907C_IRQ_VCHG_DC_F, charger);
power_supply_unregister(&max8907c_charger_ps);
out:
kfree(charger);
return 0;
}
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);
}
}
void max8907c_deep_sleep(int enter)
{
if (!max8907c_client)
return;
if (enter) {
max8907c_reg_write(max8907c_client, MAX8907C_REG_SDSEQCNT1,
MAX8907C_POWER_UP_DELAY_CNT12);
max8907c_reg_write(max8907c_client, MAX8907C_REG_SDSEQCNT2,
MAX8907C_DELAY_CNT0);
max8907c_reg_write(max8907c_client, MAX8907C_REG_SDCTL2,
MAX8907C_SD_SEQ2);
} else {
max8907c_reg_write(max8907c_client, MAX8907C_REG_SDSEQCNT1,
MAX8907C_DELAY_CNT0);
max8907c_reg_write(max8907c_client, MAX8907C_REG_SDCTL2,
MAX8907C_SD_SEQ1);
max8907c_reg_write(max8907c_client, MAX8907C_REG_SDSEQCNT2,
MAX8907C_POWER_UP_DELAY_CNT1 | MAX8907C_POWER_DOWN_DELAY_CNT12);
}
}
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
//
}
