void pm8x41_reg_write_mask(uint32_t addr, uint8_t mask, uint8_t val)
{
uint8_t tmp;
tmp = pm8x41_reg_read(addr);
tmp &= mask;
tmp |= (val & ~mask);
pm8x41_reg_write(addr, tmp);
tmp = pm8x41_reg_read(addr);
}
unsigned check_hard_reboot_mode(void)
{
uint8_t hard_restart_reason = 0;
uint8_t value = 0;
/* Read reboot reason and scrub it
* Bit-5, bit-6 and bit-7 of SOFT_RB_SPARE for hard reset reason
*/
value = pm8x41_reg_read(PON_SOFT_RB_SPARE);
hard_restart_reason = value >> 5;
pm8x41_reg_write(PON_SOFT_RB_SPARE, value & 0x1f);
return hard_restart_reason;
}
/* API to check for borken battery */
int pm8xxx_is_battery_broken()
{
uint8_t trkl_default = 0;
uint8_t vbat_det_default = 0;
int batt_is_broken = 0;
/* Store original trickle charging current setting */
trkl_default = pm8x41_reg_read(PM8XXX_IBAT_ATC_A);
/* Store original VBAT_DET_LO setting */
vbat_det_default = pm8x41_reg_read(PM8XXX_VBAT_DET);
/*Set trickle charge current to 50mA (IBAT_ATC_A = 0x00) */
pm8x41_reg_write(PM8XXX_IBAT_ATC_A, 0x00);
/* Set VBAT_DET_LO to 4.3V so that VBAT_DET_HI = 4.52V (VBAT_DET_LO = 0x35) */
pm8x41_reg_write(PM8XXX_VBAT_DET, VBAT_DET_LO_4_30V);
/* Unlock SMBBP Secured Register */
pm8x41_reg_write(PM8XXX_SEC_ACCESS, SEC_ACCESS);
/* Disable VTRKL_FAULT comp (SMBBP_CHGR_COMP_OVR0 = 0x08) */
pm8x41_reg_write(PM8XXX_COMP_OVR0, OVR0_DIS_VTRKL_FAULT);
/* Disable VCP (SMBB_BAT_IF_VCP = 0x00) */
pm8x41_reg_write(PM8XXX_VCP, 0x00);
/* Unlock SMBBP Secured Register */
pm8x41_reg_write(PM8XXX_SEC_ACCESS, SEC_ACCESS);
/* Force trickle charging (SMBB_CHGR_TRKL_CHG_TEST = 0x01) */
pm8x41_reg_write(PM8XXX_TRKL_CHG_TEST, CHG_TRICKLE_FORCED_ON);
/* Wait for vbat to rise */
mdelay(12);
/* Check Above VBAT_DET_HIGH status */
if (pm8x41_reg_read(PM8XXX_VBAT_IN_TSTS) & VBAT_DET_HI_RT_STS)
batt_is_broken = 1;
else
batt_is_broken = 0;
/* Unlock SMBBP Secured Register */
pm8x41_reg_write(PM8XXX_SEC_ACCESS, SEC_ACCESS);
/* Disable force trickle charging */
pm8x41_reg_write(PM8XXX_TRKL_CHG_TEST, 0x00);
/* re-enable VCP */
pm8x41_reg_write(PM8XXX_VCP, VCP_ENABLE);
/* restore trickle charging default current */
pm8x41_reg_write(PM8XXX_IBAT_ATC_A, trkl_default);
/* restore VBAT_DET_LO setting to original value */
pm8x41_reg_write(PM8XXX_VBAT_DET, vbat_det_default);
return batt_is_broken;
}
void pm8x41_clear_pmic_watchdog(void)
{
pm8x41_reg_write(PMIC_WD_RESET_S2_CTL2, 0x0);
}
