diff options
Diffstat (limited to 'driver')
| -rw-r--r-- | driver/charger/sm5803.c | 43 | ||||
| -rw-r--r-- | driver/charger/sm5803.h | 19 |
2 files changed, 54 insertions, 8 deletions
diff --git a/driver/charger/sm5803.c b/driver/charger/sm5803.c index 4e274af858..cc06443c5d 100644 --- a/driver/charger/sm5803.c +++ b/driver/charger/sm5803.c @@ -603,6 +603,23 @@ static void sm5803_init(int chgnum) reg = SM5803_CURRENT_TO_REG(batt_info->precharge_current); reg = MIN(reg, SM5803_PRECHG_ICHG_PRE_SET); rv |= chg_write8(chgnum, SM5803_REG_PRECHG, reg); + + /* + * Set up BFET alerts + * + * We'll set the soft limit at 1.5W and the hard limit at 6W. + * + * The register is 29.2 mW per bit. + */ + reg = (1500 * 10) / 292; + rv |= meas_write8(chgnum, SM5803_REG_BFET_PWR_MAX_TH, reg); + reg = (6000 * 10) / 292; + rv |= meas_write8(chgnum, SM5803_REG_BFET_PWR_HWSAFE_MAX_TH, + reg); + rv |= main_read8(chgnum, SM5803_REG_INT3_EN, ®); + reg |= SM5803_INT3_BFET_PWR_LIMIT | + SM5803_INT3_BFET_PWR_HWSAFE_LIMIT; + rv |= main_write8(chgnum, SM5803_REG_INT3_EN, reg); } if (rv) @@ -624,6 +641,8 @@ void sm5803_handle_interrupt(int chgnum) enum ec_error_list rv; int int_reg, meas_reg; static bool throttled; + struct batt_params bp; + int act_chg, val; /* Note: Interrupt registers are clear on read */ rv = main_read8(chgnum, SM5803_REG_INT1_REQ, &int_reg); @@ -678,6 +697,30 @@ void sm5803_handle_interrupt(int chgnum) */ } + /* TODO(b/159376384): Take action on fatal BFET power alert. */ + rv = main_read8(chgnum, SM5803_REG_INT3_REQ, &int_reg); + if (rv) { + CPRINTS("%s %d: Failed to read int3 register", CHARGER_NAME, + chgnum); + return; + } + + if ((int_reg & SM5803_INT3_BFET_PWR_LIMIT) || + (int_reg & SM5803_INT3_BFET_PWR_HWSAFE_LIMIT)) { + battery_get_params(&bp); + act_chg = charge_manager_get_active_charge_port(); + CPRINTS("%s BFET power limit reached! (%s)", CHARGER_NAME, + (int_reg & SM5803_INT3_BFET_PWR_LIMIT) ? "warn" : + "FATAL"); + CPRINTS("\tVbat: %dmV", bp.voltage); + CPRINTS("\tIbat: %dmA", bp.current); + charger_get_voltage(act_chg, &val); + CPRINTS("\tVsys(aux): %dmV", val); + charger_get_current(act_chg, &val); + CPRINTS("\tIsys: %dmA", val); + cflush(); + } + rv = main_read8(chgnum, SM5803_REG_INT4_REQ, &int_reg); if (rv) { CPRINTS("%s %d: Failed to read int4 register", CHARGER_NAME, diff --git a/driver/charger/sm5803.h b/driver/charger/sm5803.h index 75e4885cbc..7c0eaca78b 100644 --- a/driver/charger/sm5803.h +++ b/driver/charger/sm5803.h @@ -52,14 +52,14 @@ #define SM5803_INT2_VSYS BIT(6) #define SM5803_INT2_TINT BIT(7) -#define SM5803_REG_INT3_REQ 0x07 -#define SM5803_REG_INT3_EN 0x0C -#define SM5803_INT3_GPADC0 BIT(0) -#define SM5803_INT3_VBATC1 BIT(1) -#define SM5803_INT3_VBATC2 BIT(2) -#define SM5803_INT3_SPARE BIT(3) -#define SM5803_INT3_VBUS_PWR_LIMIT BIT(4) -#define SM5803_INT3_IBAT BIT(5) +#define SM5803_REG_INT3_REQ 0x07 +#define SM5803_REG_INT3_EN 0x0C +#define SM5803_INT3_GPADC0 BIT(0) +#define SM5803_INT3_BFET_PWR_LIMIT BIT(1) +#define SM5803_INT3_BFET_PWR_HWSAFE_LIMIT BIT(2) +#define SM5803_INT3_SPARE BIT(3) +#define SM5803_INT3_VBUS_PWR_LIMIT BIT(4) +#define SM5803_INT3_IBAT BIT(5) #define SM5803_REG_INT4_REQ 0x08 #define SM5803_REG_INT4_EN 0x0D @@ -96,6 +96,9 @@ enum sm5803_gpio0_modes { GPIO0_MODE_INPUT }; +#define SM5803_REG_BFET_PWR_MAX_TH 0x35 +#define SM5803_REG_BFET_PWR_HWSAFE_MAX_TH 0x36 + #define SM5803_REG_PORTS_CTRL 0x40 #define SM5803_PORTS_VBUS_DISCH BIT(0) #define SM5803_PORTS_VBUS_PULLDOWN BIT(1) |