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