diff options
Diffstat (limited to 'common/pmu_tps65090.c')
| -rw-r--r-- | common/pmu_tps65090.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/common/pmu_tps65090.c b/common/pmu_tps65090.c index 10e106fd75..d9b72ec765 100644 --- a/common/pmu_tps65090.c +++ b/common/pmu_tps65090.c @@ -44,6 +44,12 @@ #define CG_ISET_SHIFT 0 #define CG_ISET_MASK (7 << CG_ISET_SHIFT) #define CG_NOITERM (1 << 5) +#define CG_TSET_SHIFT 5 +#define CG_TSET_MASK (7 << CG_TSET_SHIFT) + +/* A temperature threshold to force charger hardware error */ +#define CG_TEMP_THRESHOLD_ERROR 0 + /* IRQ events */ #define EVENT_VACG (1 << 1) /* AC voltage good */ @@ -55,6 +61,14 @@ /* Charger alarm */ #define CHARGER_ALARM 3 +/* Charger temperature threshold table */ +static const uint8_t const pmu_temp_threshold[] = { + 1, /* 0b001, 0 degree C */ + 2, /* 0b010, 10 degree C */ + 5, /* 0b101, 45 degree C */ + 7, /* 0b111, 60 degree C */ +}; + /* Read all tps65090 interrupt events */ static int pmu_get_event(int *event) { @@ -200,6 +214,61 @@ int pmu_set_term_voltage(enum TPS_TEMPERATURE_RANGE range, } /** + * Set temperature threshold + * + * @param temp_n TSET_T1 to TSET_T4 + * @param value 0b000 ~ 0b111, temperature threshold + */ +int pmu_set_temp_threshold(enum TPS_TEMPERATURE temp_n, uint8_t value) +{ + int rv; + int reg_val; + + /* + * Temperature threshold T1 to T4 are stored in TPSCHROME registers + * CG_CTRL1 to CG_CTRL4. + */ + rv = pmu_read(CG_CTRL1 + temp_n, ®_val); + if (rv) + return rv; + + reg_val &= ~CG_TSET_MASK; + reg_val |= (value << CG_TSET_SHIFT) & CG_TSET_MASK; + + return pmu_write(CG_CTRL1 + temp_n, reg_val); +} + +/** + * Force charger into error state, turn off charging and blinks charging LED + * + * @param enable true to turn off charging and blink LED + * @return EC_SUCCESS for success + */ +int pmu_blink_led(int enable) +{ + int rv; + enum TPS_TEMPERATURE t; + uint8_t threshold; + + for (t = TSET_T1; t <= TSET_T4; t++) { + if (enable) + threshold = CG_TEMP_THRESHOLD_ERROR; + else + threshold = pmu_temp_threshold[t]; + + rv = pmu_set_temp_threshold(t, threshold); + if (rv) { + /* Retry */ + rv = pmu_set_temp_threshold(t, threshold); + if (rv) + return rv; + } + } + + return EC_SUCCESS; +} + +/** * Enable low current charging * * @param enable enable/disable low current charging |