/* * pmbus.h - Common defines and structures for PMBus devices * * Copyright (c) 2010, 2011 Ericsson AB. * Copyright (c) 2012 Guenter Roeck * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #ifndef PMBUS_H #define PMBUS_H /* * Registers */ #define PMBUS_PAGE 0x00 #define PMBUS_OPERATION 0x01 #define PMBUS_ON_OFF_CONFIG 0x02 #define PMBUS_CLEAR_FAULTS 0x03 #define PMBUS_PHASE 0x04 #define PMBUS_CAPABILITY 0x19 #define PMBUS_QUERY 0x1A #define PMBUS_VOUT_MODE 0x20 #define PMBUS_VOUT_COMMAND 0x21 #define PMBUS_VOUT_TRIM 0x22 #define PMBUS_VOUT_CAL_OFFSET 0x23 #define PMBUS_VOUT_MAX 0x24 #define PMBUS_VOUT_MARGIN_HIGH 0x25 #define PMBUS_VOUT_MARGIN_LOW 0x26 #define PMBUS_VOUT_TRANSITION_RATE 0x27 #define PMBUS_VOUT_DROOP 0x28 #define PMBUS_VOUT_SCALE_LOOP 0x29 #define PMBUS_VOUT_SCALE_MONITOR 0x2A #define PMBUS_COEFFICIENTS 0x30 #define PMBUS_POUT_MAX 0x31 #define PMBUS_FAN_CONFIG_12 0x3A #define PMBUS_FAN_COMMAND_1 0x3B #define PMBUS_FAN_COMMAND_2 0x3C #define PMBUS_FAN_CONFIG_34 0x3D #define PMBUS_FAN_COMMAND_3 0x3E #define PMBUS_FAN_COMMAND_4 0x3F #define PMBUS_VOUT_OV_FAULT_LIMIT 0x40 #define PMBUS_VOUT_OV_FAULT_RESPONSE 0x41 #define PMBUS_VOUT_OV_WARN_LIMIT 0x42 #define PMBUS_VOUT_UV_WARN_LIMIT 0x43 #define PMBUS_VOUT_UV_FAULT_LIMIT 0x44 #define PMBUS_VOUT_UV_FAULT_RESPONSE 0x45 #define PMBUS_IOUT_OC_FAULT_LIMIT 0x46 #define PMBUS_IOUT_OC_FAULT_RESPONSE 0x47 #define PMBUS_IOUT_OC_LV_FAULT_LIMIT 0x48 #define PMBUS_IOUT_OC_LV_FAULT_RESPONSE 0x49 #define PMBUS_IOUT_OC_WARN_LIMIT 0x4A #define PMBUS_IOUT_UC_FAULT_LIMIT 0x4B #define PMBUS_IOUT_UC_FAULT_RESPONSE 0x4C #define PMBUS_OT_FAULT_LIMIT 0x4F #define PMBUS_OT_FAULT_RESPONSE 0x50 #define PMBUS_OT_WARN_LIMIT 0x51 #define PMBUS_UT_WARN_LIMIT 0x52 #define PMBUS_UT_FAULT_LIMIT 0x53 #define PMBUS_UT_FAULT_RESPONSE 0x54 #define PMBUS_VIN_OV_FAULT_LIMIT 0x55 #define PMBUS_VIN_OV_FAULT_RESPONSE 0x56 #define PMBUS_VIN_OV_WARN_LIMIT 0x57 #define PMBUS_VIN_UV_WARN_LIMIT 0x58 #define PMBUS_VIN_UV_FAULT_LIMIT 0x59 #define PMBUS_IIN_OC_FAULT_LIMIT 0x5B #define PMBUS_IIN_OC_WARN_LIMIT 0x5D #define PMBUS_POUT_OP_FAULT_LIMIT 0x68 #define PMBUS_POUT_OP_WARN_LIMIT 0x6A #define PMBUS_PIN_OP_WARN_LIMIT 0x6B #define PMBUS_STATUS_BYTE 0x78 #define PMBUS_STATUS_WORD 0x79 #define PMBUS_STATUS_VOUT 0x7A #define PMBUS_STATUS_IOUT 0x7B #define PMBUS_STATUS_INPUT 0x7C #define PMBUS_STATUS_TEMPERATURE 0x7D #define PMBUS_STATUS_CML 0x7E #define PMBUS_STATUS_OTHER 0x7F #define PMBUS_STATUS_MFR_SPECIFIC 0x80 #define PMBUS_STATUS_FAN_12 0x81 #define PMBUS_STATUS_FAN_34 0x82 #define PMBUS_READ_VIN 0x88 #define PMBUS_READ_IIN 0x89 #define PMBUS_READ_VCAP 0x8A #define PMBUS_READ_VOUT 0x8B #define PMBUS_READ_IOUT 0x8C #define PMBUS_READ_TEMPERATURE_1 0x8D #define PMBUS_READ_TEMPERATURE_2 0x8E #define PMBUS_READ_TEMPERATURE_3 0x8F #define PMBUS_READ_FAN_SPEED_1 0x90 #define PMBUS_READ_FAN_SPEED_2 0x91 #define PMBUS_READ_FAN_SPEED_3 0x92 #define PMBUS_READ_FAN_SPEED_4 0x93 #define PMBUS_READ_DUTY_CYCLE 0x94 #define PMBUS_READ_FREQUENCY 0x95 #define PMBUS_READ_POUT 0x96 #define PMBUS_READ_PIN 0x97 #define PMBUS_REVISION 0x98 #define PMBUS_MFR_ID 0x99 #define PMBUS_MFR_MODEL 0x9A #define PMBUS_MFR_REVISION 0x9B #define PMBUS_MFR_LOCATION 0x9C #define PMBUS_MFR_DATE 0x9D #define PMBUS_MFR_SERIAL 0x9E /* * Virtual registers. * Useful to support attributes which are not supported by standard PMBus * registers but exist as manufacturer specific registers on individual chips. * Must be mapped to real registers in device specific code. * * Semantics: * Virtual registers are all word size. * READ registers are read-only; writes are either ignored or return an error. * RESET registers are read/write. Reading reset registers returns zero * (used for detection), writing any value causes the associated history to be * reset. * Virtual registers have to be handled in device specific driver code. Chip * driver code returns non-negative register values if a virtual register is * supported, or a negative error code if not. The chip driver may return * -ENODATA or any other error code in this case, though an error code other * than -ENODATA is handled more efficiently and thus preferred. Either case, * the calling PMBus core code will abort if the chip driver returns an error * code when reading or writing virtual registers. */ #define PMBUS_VIRT_BASE 0x100 #define PMBUS_VIRT_READ_TEMP_AVG (PMBUS_VIRT_BASE + 0) #define PMBUS_VIRT_READ_TEMP_MIN (PMBUS_VIRT_BASE + 1) #define PMBUS_VIRT_READ_TEMP_MAX (PMBUS_VIRT_BASE + 2) #define PMBUS_VIRT_RESET_TEMP_HISTORY (PMBUS_VIRT_BASE + 3) #define PMBUS_VIRT_READ_VIN_AVG (PMBUS_VIRT_BASE + 4) #define PMBUS_VIRT_READ_VIN_MIN (PMBUS_VIRT_BASE + 5) #define PMBUS_VIRT_READ_VIN_MAX (PMBUS_VIRT_BASE + 6) #define PMBUS_VIRT_RESET_VIN_HISTORY (PMBUS_VIRT_BASE + 7) #define PMBUS_VIRT_READ_IIN_AVG (PMBUS_VIRT_BASE + 8) #define PMBUS_VIRT_READ_IIN_MIN (PMBUS_VIRT_BASE + 9) #define PMBUS_VIRT_READ_IIN_MAX (PMBUS_VIRT_BASE + 10) #define PMBUS_VIRT_RESET_IIN_HISTORY (PMBUS_VIRT_BASE + 11) #define PMBUS_VIRT_READ_PIN_AVG (PMBUS_VIRT_BASE + 12) #define PMBUS_VIRT_READ_PIN_MIN (PMBUS_VIRT_BASE + 13) #define PMBUS_VIRT_READ_PIN_MAX (PMBUS_VIRT_BASE + 14) #define PMBUS_VIRT_RESET_PIN_HISTORY (PMBUS_VIRT_BASE + 15) #define PMBUS_VIRT_READ_POUT_AVG (PMBUS_VIRT_BASE + 16) #define PMBUS_VIRT_READ_POUT_MIN (PMBUS_VIRT_BASE + 17) #define PMBUS_VIRT_READ_POUT_MAX (PMBUS_VIRT_BASE + 18) #define PMBUS_VIRT_RESET_POUT_HISTORY (PMBUS_VIRT_BASE + 19) #define PMBUS_VIRT_READ_VOUT_AVG (PMBUS_VIRT_BASE + 20) #define PMBUS_VIRT_READ_VOUT_MIN (PMBUS_VIRT_BASE + 21) #define PMBUS_VIRT_READ_VOUT_MAX (PMBUS_VIRT_BASE + 22) #define PMBUS_VIRT_RESET_VOUT_HISTORY (PMBUS_VIRT_BASE + 23) #define PMBUS_VIRT_READ_IOUT_AVG (PMBUS_VIRT_BASE + 24) #define PMBUS_VIRT_READ_IOUT_MIN (PMBUS_VIRT_BASE + 25) #define PMBUS_VIRT_READ_IOUT_MAX (PMBUS_VIRT_BASE + 26) #define PMBUS_VIRT_RESET_IOUT_HISTORY (PMBUS_VIRT_BASE + 27) #define PMBUS_VIRT_READ_TEMP2_AVG (PMBUS_VIRT_BASE + 28) #define PMBUS_VIRT_READ_TEMP2_MIN (PMBUS_VIRT_BASE + 29) #define PMBUS_VIRT_READ_TEMP2_MAX (PMBUS_VIRT_BASE + 30) #define PMBUS_VIRT_RESET_TEMP2_HISTORY (PMBUS_VIRT_BASE + 31) #define PMBUS_VIRT_READ_VMON (PMBUS_VIRT_BASE + 32) #define PMBUS_VIRT_VMON_UV_WARN_LIMIT (PMBUS_VIRT_BASE + 33) #define PMBUS_VIRT_VMON_OV_WARN_LIMIT (PMBUS_VIRT_BASE + 34) #define PMBUS_VIRT_VMON_UV_FAULT_LIMIT (PMBUS_VIRT_BASE + 35) #define PMBUS_VIRT_VMON_OV_FAULT_LIMIT (PMBUS_VIRT_BASE + 36) #define PMBUS_VIRT_STATUS_VMON (PMBUS_VIRT_BASE + 37) /* * OPERATION */ #define PB_OPERATION_CONTROL_ON (1<<7) /* * CAPABILITY */ #define PB_CAPABILITY_SMBALERT (1<<4) #define PB_CAPABILITY_ERROR_CHECK (1<<7) /* * VOUT_MODE */ #define PB_VOUT_MODE_MODE_MASK 0xe0 #define PB_VOUT_MODE_PARAM_MASK 0x1f #define PB_VOUT_MODE_LINEAR 0x00 #define PB_VOUT_MODE_VID 0x20 #define PB_VOUT_MODE_DIRECT 0x40 /* * Fan configuration */ #define PB_FAN_2_PULSE_MASK ((1 << 0) | (1 << 1)) #define PB_FAN_2_RPM (1 << 2) #define PB_FAN_2_INSTALLED (1 << 3) #define PB_FAN_1_PULSE_MASK ((1 << 4) | (1 << 5)) #define PB_FAN_1_RPM (1 << 6) #define PB_FAN_1_INSTALLED (1 << 7) /* * STATUS_BYTE, STATUS_WORD (lower) */ #define PB_STATUS_NONE_ABOVE (1<<0) #define PB_STATUS_CML (1<<1) #define PB_STATUS_TEMPERATURE (1<<2) #define PB_STATUS_VIN_UV (1<<3) #define PB_STATUS_IOUT_OC (1<<4) #define PB_STATUS_VOUT_OV (1<<5) #define PB_STATUS_OFF (1<<6) #define PB_STATUS_BUSY (1<<7) /* * STATUS_WORD (upper) */ #define PB_STATUS_UNKNOWN (1<<8) #define PB_STATUS_OTHER (1<<9) #define PB_STATUS_FANS (1<<10) #define PB_STATUS_POWER_GOOD_N (1<<11) #define PB_STATUS_WORD_MFR (1<<12) #define PB_STATUS_INPUT (1<<13) #define PB_STATUS_IOUT_POUT (1<<14) #define PB_STATUS_VOUT (1<<15) /* * STATUS_IOUT */ #define PB_POUT_OP_WARNING (1<<0) #define PB_POUT_OP_FAULT (1<<1) #define PB_POWER_LIMITING (1<<2) #define PB_CURRENT_SHARE_FAULT (1<<3) #define PB_IOUT_UC_FAULT (1<<4) #define PB_IOUT_OC_WARNING (1<<5) #define PB_IOUT_OC_LV_FAULT (1<<6) #define PB_IOUT_OC_FAULT (1<<7) /* * STATUS_VOUT, STATUS_INPUT */ #define PB_VOLTAGE_UV_FAULT (1<<4) #define PB_VOLTAGE_UV_WARNING (1<<5) #define PB_VOLTAGE_OV_WARNING (1<<6) #define PB_VOLTAGE_OV_FAULT (1<<7) /* * STATUS_INPUT */ #define PB_PIN_OP_WARNING (1<<0) #define PB_IIN_OC_WARNING (1<<1) #define PB_IIN_OC_FAULT (1<<2) /* * STATUS_TEMPERATURE */ #define PB_TEMP_UT_FAULT (1<<4) #define PB_TEMP_UT_WARNING (1<<5) #define PB_TEMP_OT_WARNING (1<<6) #define PB_TEMP_OT_FAULT (1<<7) /* * STATUS_FAN */ #define PB_FAN_AIRFLOW_WARNING (1<<0) #define PB_FAN_AIRFLOW_FAULT (1<<1) #define PB_FAN_FAN2_SPEED_OVERRIDE (1<<2) #define PB_FAN_FAN1_SPEED_OVERRIDE (1<<3) #define PB_FAN_FAN2_WARNING (1<<4) #define PB_FAN_FAN1_WARNING (1<<5) #define PB_FAN_FAN2_FAULT (1<<6) #define PB_FAN_FAN1_FAULT (1<<7) /* * CML_FAULT_STATUS */ #define PB_CML_FAULT_OTHER_MEM_LOGIC (1<<0) #define PB_CML_FAULT_OTHER_COMM (1<<1) #define PB_CML_FAULT_PROCESSOR (1<<3) #define PB_CML_FAULT_MEMORY (1<<4) #define PB_CML_FAULT_PACKET_ERROR (1<<5) #define PB_CML_FAULT_INVALID_DATA (1<<6) #define PB_CML_FAULT_INVALID_COMMAND (1<<7) enum pmbus_sensor_classes { PSC_VOLTAGE_IN = 0, PSC_VOLTAGE_OUT, PSC_CURRENT_IN, PSC_CURRENT_OUT, PSC_POWER, PSC_TEMPERATURE, PSC_FAN, PSC_NUM_CLASSES /* Number of power sensor classes */ }; #define PMBUS_PAGES 32 /* Per PMBus specification */ /* Functionality bit mask */ #define PMBUS_HAVE_VIN (1 << 0) #define PMBUS_HAVE_VCAP (1 << 1) #define PMBUS_HAVE_VOUT (1 << 2) #define PMBUS_HAVE_IIN (1 << 3) #define PMBUS_HAVE_IOUT (1 << 4) #define PMBUS_HAVE_PIN (1 << 5) #define PMBUS_HAVE_POUT (1 << 6) #define PMBUS_HAVE_FAN12 (1 << 7) #define PMBUS_HAVE_FAN34 (1 << 8) #define PMBUS_HAVE_TEMP (1 << 9) #define PMBUS_HAVE_TEMP2 (1 << 10) #define PMBUS_HAVE_TEMP3 (1 << 11) #define PMBUS_HAVE_STATUS_VOUT (1 << 12) #define PMBUS_HAVE_STATUS_IOUT (1 << 13) #define PMBUS_HAVE_STATUS_INPUT (1 << 14) #define PMBUS_HAVE_STATUS_TEMP (1 << 15) #define PMBUS_HAVE_STATUS_FAN12 (1 << 16) #define PMBUS_HAVE_STATUS_FAN34 (1 << 17) #define PMBUS_HAVE_VMON (1 << 18) #define PMBUS_HAVE_STATUS_VMON (1 << 19) enum pmbus_data_format { linear = 0, direct, vid }; struct pmbus_driver_info { int pages; /* Total number of pages */ enum pmbus_data_format format[PSC_NUM_CLASSES]; /* * Support one set of coefficients for each sensor type * Used for chips providing data in direct mode. */ int m[PSC_NUM_CLASSES]; /* mantissa for direct data format */ int b[PSC_NUM_CLASSES]; /* offset */ int R[PSC_NUM_CLASSES]; /* exponent */ u32 func[PMBUS_PAGES]; /* Functionality, per page */ /* * The following functions map manufacturing specific register values * to PMBus standard register values. Specify only if mapping is * necessary. * Functions return the register value (read) or zero (write) if * successful. A return value of -ENODATA indicates that there is no * manufacturer specific register, but that a standard PMBus register * may exist. Any other negative return value indicates that the * register does not exist, and that no attempt should be made to read * the standard register. */ int (*read_byte_data)(struct i2c_client *client, int page, int reg); int (*read_word_data)(struct i2c_client *client, int page, int reg); int (*write_word_data)(struct i2c_client *client, int page, int reg, u16 word); int (*write_byte)(struct i2c_client *client, int page, u8 value); /* * The identify function determines supported PMBus functionality. * This function is only necessary if a chip driver supports multiple * chips, and the chip functionality is not pre-determined. */ int (*identify)(struct i2c_client *client, struct pmbus_driver_info *info); /* Regulator functionality, if supported by this chip driver. */ int num_regulators; const struct regulator_desc *reg_desc; }; /* Regulator ops */ extern const struct regulator_ops pmbus_regulator_ops; /* Macro for filling in array of struct regulator_desc */ #define PMBUS_REGULATOR(_name, _id) \ [_id] = { \ .name = (_name # _id), \ .id = (_id), \ .of_match = of_match_ptr(_name # _id), \ .regulators_node = of_match_ptr("regulators"), \ .ops = &pmbus_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ } /* Function declarations */ void pmbus_clear_cache(struct i2c_client *client); int pmbus_set_page(struct i2c_client *client, u8 page); int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg); int pmbus_write_word_data(struct i2c_client *client, u8 page, u8 reg, u16 word); int pmbus_read_byte_data(struct i2c_client *client, int page, u8 reg); int pmbus_write_byte(struct i2c_client *client, int page, u8 value); int pmbus_write_byte_data(struct i2c_client *client, int page, u8 reg, u8 value); int pmbus_update_byte_data(struct i2c_client *client, int page, u8 reg, u8 mask, u8 value); void pmbus_clear_faults(struct i2c_client *client); bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg); bool pmbus_check_word_register(struct i2c_client *client, int page, int reg); int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id, struct pmbus_driver_info *info); int pmbus_do_remove(struct i2c_client *client); const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client *client); #endif /* PMBUS_H */