diff options
Diffstat (limited to 'driver/battery/max17055.h')
| -rw-r--r-- | driver/battery/max17055.h | 111 |
1 files changed, 108 insertions, 3 deletions
diff --git a/driver/battery/max17055.h b/driver/battery/max17055.h index 5a3764d9de..f223fa15e8 100644 --- a/driver/battery/max17055.h +++ b/driver/battery/max17055.h @@ -12,6 +12,9 @@ #define MAX17055_DEVICE_ID 0x4010 #define REG_STATUS 0x00 +#define REG_VALRTTH 0x01 +#define REG_TALRTTH 0x02 +#define REG_SALRTTH 0x03 #define REG_AT_RATE 0x04 #define REG_REMAINING_CAPACITY 0x05 #define REG_STATE_OF_CHARGE 0x06 @@ -27,6 +30,9 @@ #define REG_CYCLE_COUNT 0x17 #define REG_DESIGN_CAPACITY 0x18 #define REG_AVERAGE_VOLTAGE 0x19 +#define REG_MAX_MIN_TEMP 0x1a +#define REG_MAX_MIN_VOLT 0x1b +#define REG_MAX_MIN_CURR 0x1c #define REG_CHARGE_TERM_CURRENT 0x1e #define REG_TIME_TO_FULL 0x20 #define REG_DEVICE_NAME 0x21 @@ -42,17 +48,41 @@ #define REG_DQACC 0x45 #define REG_DPACC 0x46 #define REG_STATUS2 0xb0 +#define REG_IALRTTH 0xb4 #define REG_HIBCFG 0xba #define REG_CONFIG2 0xbb #define REG_TIMERH 0xbe #define REG_MODELCFG 0xdb /* Status reg (0x00) flags */ -#define STATUS_POR 0x0002 -#define STATUS_BST 0x0008 +#define STATUS_POR (1 << 1) +#define STATUS_IMN (1 << 2) +#define STATUS_BST (1 << 3) +#define STATUS_IMX (1 << 6) +#define STATUS_VMN (1 << 8) +#define STATUS_TMN (1 << 9) +#define STATUS_SMN (1 << 10) +#define STATUS_VMX (1 << 12) +#define STATUS_TMX (1 << 13) +#define STATUS_SMX (1 << 14) +#define STATUS_ALL_ALRT \ + (STATUS_IMN | STATUS_IMX | STATUS_VMN | STATUS_VMX | STATUS_TMN | \ + STATUS_TMX | STATUS_SMN | STATUS_SMX) + +/* Alert disable values (0x01, 0x02, 0x03, 0xb4) */ +#define VALRT_DISABLE 0xff00 +#define TALRT_DISABLE 0x7f80 +#define SALRT_DISABLE 0xff00 +#define IALRT_DISABLE 0x7f80 /* Config reg (0x1d) flags */ -#define CONF_TSEL 0x8000 +#define CONF_AEN (1 << 2) +#define CONF_IS (1 << 11) +#define CONF_VS (1 << 12) +#define CONF_TS (1 << 13) +#define CONF_SS (1 << 14) +#define CONF_TSEL (1 << 15) +#define CONF_ALL_STICKY (CONF_IS | CONF_VS | CONF_TS | CONF_SS) /* FStat reg (0x3d) flags */ #define FSTAT_DNR 0x0001 @@ -86,6 +116,27 @@ #define MAX17055_VEMPTY_REG(ve_mv, vr_mv) \ (((ve_mv / 10) << 7) | (vr_mv / 40)) +#define MAX17055_MAX_MIN_REG(mx, mn) ((((int16_t)(mx)) << 8) | ((mn))) +/* Converts voltages alert range for VALRTTH_REG */ +#define MAX17055_VALRTTH_RESOLUTION 20 +#define MAX17055_VALRTTH_REG(mx, mn) \ + MAX17055_MAX_MIN_REG((uint8_t)(mx / MAX17055_VALRTTH_RESOLUTION), \ + (uint8_t)(mn / MAX17055_VALRTTH_RESOLUTION)) +/* Converts temperature alert range for TALRTTH_REG */ +#define MAX17055_TALRTTH_REG(mx, mn) \ + MAX17055_MAX_MIN_REG((int8_t)(mx), (int8_t)(mn)) +/* Converts state-of-charge alert range for SALRTTH_REG */ +#define MAX17055_SALRTTH_REG(mx, mn) \ + MAX17055_MAX_MIN_REG((uint8_t)(mx), (uint8_t)(mn)) +/* Converts current alert range for IALRTTH_REG */ +/* Current resolution: 0.4mV/RSENSE */ +#define MAX17055_IALRTTH_MUL (10 * BATTERY_MAX17055_RSENSE) +#define MAX17055_IALRTTH_DIV 4 +#define MAX17055_IALRTTH_REG(mx, mn) \ + MAX17055_MAX_MIN_REG( \ + (int8_t)(mx * MAX17055_IALRTTH_MUL / MAX17055_IALRTTH_DIV), \ + (int8_t)(mn * MAX17055_IALRTTH_MUL / MAX17055_IALRTTH_DIV)) + /* * max17055 needs some special battery parameters for fuel gauge * learning algorithm. Maxim can help characterize the battery pack @@ -127,4 +178,58 @@ struct max17055_batt_profile { /* Return the special battery parameters max17055 needs. */ const struct max17055_batt_profile *max17055_get_batt_profile(void); +#ifdef CONFIG_BATTERY_MAX17055_ALERT +/* + * max17055 supports alert on voltage, current, state-of-charge, and + * temperature. To enable this feature, the information of the limit range is + * needed. + */ +struct max17055_alert_profile { + /* + * Sets voltage upper and lower limits that generate an alert if + * voltage is outside of the v_alert_mxmn range. + * The upper 8 bits set the maximum value and the lower 8 bits set the + * minimum value. Interrupt threshold limits are selectable with 20mV + * resolution. + * Use MAX17055_VALRTTH_REG(max, min) to setup the desired range, + * VALRT_DISABLE to disable the alert. + */ + const uint16_t v_alert_mxmn; + /* + * Sets temperature upper and lower limits that generate an alert if + * temperature is outside of the t_alert_mxmn range. + * The upper 8 bits set the maximum value and the lower 8 bits set the + * minimum value. Interrupt threshold limits are stored in + * 2’s-complement format with 1°C resolution. + * Use MAX17055_TALRTTH_REG(max, min) to setup the desired range, + * TALRT_DISABLE to disable the alert. + */ + const uint16_t t_alert_mxmn; + /* + * Sets reported state-of-charge upper and lower limits that generate + * an alert if SOC is outside of the s_alert_mxmn range. + * The upper 8 bits set the maximum value and the lower 8 bits set the + * minimum value. Interrupt threshold limits are configurable with 1% + * resolution. + * Use MAX17055_SALRTTH_REG(max, min) to setup the desired range, + * SALRT_DISABLE to disable the alert. + */ + const uint16_t s_alert_mxmn; + /* + * Sets current upper and lower limits that generate an alert if + * current is outside of the i_alert_mxmn range. + * The upper 8 bits set the maximum value and the lower 8 bits set the + * minimum value. Interrupt threshold limits are selectable with + * 0.4mV/R SENSE resolution. + * Use MAX17055_IALRTTH_REG(max, min) to setup the desired range, + * IALRT_DISABLE to disable the alert. + */ + const uint16_t i_alert_mxmn; +}; + +/* + * Return the battery/system's alert threshoulds that max17055 needs. + */ +const struct max17055_alert_profile *max17055_get_alert_profile(void); +#endif /* CONFIG_BATTERY_MAX17055_ALERT */ #endif /* __CROS_EC_MAX17055_H */ |