diff options
Diffstat (limited to 'driver/charger/sm5803.c')
| -rw-r--r-- | driver/charger/sm5803.c | 54 |
1 files changed, 50 insertions, 4 deletions
diff --git a/driver/charger/sm5803.c b/driver/charger/sm5803.c index 81108e7506..d4a20826a7 100644 --- a/driver/charger/sm5803.c +++ b/driver/charger/sm5803.c @@ -9,6 +9,7 @@ #include "battery_smart.h" #include "charge_state_v2.h" #include "charger.h" +#include "extpower.h" #include "gpio.h" #include "hooks.h" #include "i2c.h" @@ -624,6 +625,12 @@ static void sm5803_init(int chgnum) rv = chg_write8(chgnum, SM5803_REG_DPM_VL_SET_MSB, (reg >> 3)); rv |= chg_write8(chgnum, SM5803_REG_DPM_VL_SET_LSB, (reg & 0x7)); + /* Set the VCHGPWR thresholds to mirror those for VBUS. */ + rv |= meas_write8(chgnum, SM5803_REG_VCHG_PWR_HIGH_TH, + SM5803_VBUS_HIGH_LEVEL); + rv |= meas_write8(chgnum, SM5803_REG_VCHG_PWR_LOW_TH, + SM5803_VBUS_LOW_LEVEL); + /* Set default input current */ reg = SM5803_CURRENT_TO_REG(CONFIG_CHARGER_INPUT_CURRENT) & SM5803_CHG_ILIM_RAW; @@ -647,8 +654,11 @@ static void sm5803_init(int chgnum) SM5803_TINT_MIN_LEVEL); - /* Configure TINT interrupts to fire after thresholds are set */ - rv |= main_write8(chgnum, SM5803_REG_INT2_EN, SM5803_INT2_TINT); + /* + * Configure TINT & VCHGPWR interrupts to fire after thresholds are set + */ + rv |= main_write8(chgnum, SM5803_REG_INT2_EN, SM5803_INT2_TINT | + SM5803_INT2_VCHGPWR); /* * Configure CHG_ENABLE to only be set through I2C by setting @@ -1020,12 +1030,10 @@ void sm5803_handle_interrupt(int chgnum) charger_vbus[chgnum] = 0; if (IS_ENABLED(CONFIG_USB_CHARGER)) usb_charger_vbus_change(chgnum, 0); - board_vbus_present_change(); } else { charger_vbus[chgnum] = 1; if (IS_ENABLED(CONFIG_USB_CHARGER)) usb_charger_vbus_change(chgnum, 1); - board_vbus_present_change(); } } @@ -1070,6 +1078,10 @@ void sm5803_handle_interrupt(int chgnum) */ } + /* Update extpower if VCHGPWR changes. */ + if (int_reg & SM5803_INT2_VCHGPWR) + board_vbus_present_change(); + /* TODO(b/159376384): Take action on fatal BFET power alert. */ rv = main_read8(chgnum, SM5803_REG_INT3_REQ, &int_reg); if (rv) { @@ -1474,6 +1486,40 @@ static enum ec_error_list sm5803_get_option(int chgnum, int *option) return rv; } +enum ec_error_list sm5803_is_acok(int chgnum, bool *acok) +{ + int rv; + enum sm5803_charger_modes mode; + int reg; + + rv = chg_read8(chgnum, SM5803_REG_FLOW1, ®); + if (rv) + return rv; + + /* The charger mode is contained in the last 2 bits. */ + reg &= SM5803_FLOW1_MODE; + mode = (enum sm5803_charger_modes)reg; + + /* If we're not sinking, then AC can't be OK. */ + if (mode != CHARGER_MODE_SINK) { + *acok = false; + return EC_SUCCESS; + } + + /* + * Okay, we're sinking. Check that VCHGPWR has some voltage. This + * should indicate that the path is good. + */ + rv = meas_read8(chgnum, SM5803_REG_VCHG_PWR_MSB, ®); + if (rv) + return rv; + + /* Assume that ACOK would be asserted if VCHGPWR is higher than ~4V. */ + *acok = reg >= SM5803_VBUS_HIGH_LEVEL; + + return EC_SUCCESS; +} + static enum ec_error_list sm5803_is_input_current_limit_reached(int chgnum, bool *reached) { |