121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
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/* Copyright 2019 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Renesas (Intersil) ISL-9241 battery charger driver header.
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*/
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#ifndef __CROS_EC_ISL9241_H
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#define __CROS_EC_ISL9241_H
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#define ISL9241_ADDR_FLAGS 0x09
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#define I2C_ADDR_CHARGER_FLAGS ISL9241_ADDR_FLAGS
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#define CHARGER_NAME "ISL9241"
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#define CHARGE_V_MAX 18304
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#define CHARGE_V_MIN 64
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#define CHARGE_V_STEP 8
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#define CHARGE_I_MAX 6140
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#define CHARGE_I_MIN 4
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#define CHARGE_I_STEP 4
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#define INPUT_I_MAX 6140
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#define INPUT_I_MIN 4
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#define INPUT_I_STEP 4
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/* Registers */
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/*
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* ChargeCurrentLimit [12:2] 11-bit (0x0000h = disables fast charging,
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* trickle charging is allowed)
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*/
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#define ISL9241_REG_CHG_CURRENT_LIMIT 0x14
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/* MaxSystemVoltage [14:3] 12-bit, (0x0000h = disables switching) */
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#define ISL9241_REG_MAX_SYSTEM_VOLTAGE 0x15
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#define ISL9241_REG_CONTROL7 0x38
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/* Configures various charger options */
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#define ISL9241_REG_CONTROL0 0x39
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/* 2: Input Voltage Regulation (0 = Enable (default), 1 = Disable) */
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#define ISL9241_CONTROL0_INPUT_VTG_REGULATION BIT(2)
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#define ISL9241_REG_INFORMATION1 0x3A
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#define ISL9241_REG_ADAPTER_CUR_LIMIT2 0x3B
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/* Configures various charger options */
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#define ISL9241_REG_CONTROL1 0x3C
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#define ISL9241_CONTROL1_LEARN_MODE BIT(12)
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/* Configures various charger options */
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#define ISL9241_REG_CONTROL2 0x3D
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/*
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* 15:13 - Trickle Charging Current
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* <000> 32mA (do not use)
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* <001> 64mA
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* <010> 96mA
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* <011> 128mA (default)
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* <100> 160mA
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* <101> 192mA
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* <110> 224mA
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* <111> 256mA
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*/
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#define ISL9241_CONTROL2_TRICKLE_CHG_CURR(curr) ((((curr) >> 5) - 1) << 13)
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/* 12 - Two-Level Adapter Current Limit */
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#define ISL9241_CONTROL2_TWO_LEVEL_ADP_CURR BIT(12)
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/* 10:9 PROCHOT# debounce time in uS */
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#define ISL9241_CONTROL2_PROCHOT_DEBOUNCE_1000 (3 << 9)
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/* MinSystemVoltage [13:6] 8-bit (0x0000h = disables all battery charging) */
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#define ISL9241_REG_MIN_SYSTEM_VOLTAGE 0x3E
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#define ISL9241_REG_ADAPTER_CUR_LIMIT1 0x3F
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#define ISL9241_REG_ACOK_REFERENCE 0x40
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#define ISL9241_REG_CONTROL6 0x43
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#define ISL9241_REG_AC_PROCHOT 0x47
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#define ISL9241_REG_DC_PROCHOT 0x48
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#define ISL9241_REG_OTG_VOLTAGE 0x49
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#define ISL9241_REG_OTG_CURRENT 0x4A
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/* VIN Voltage (ADP Min Voltage) (default 4.096V) */
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#define ISL9241_REG_VIN_VOLTAGE 0x4B
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/* Configures various charger options */
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#define ISL9241_REG_CONTROL3 0x4C
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/* 14: ACLIM Reload (0 - reload, 1 - Do not reload */
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#define ISL9241_CONTROL3_ACLIM_RELOAD BIT(14)
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/* 2: Digital Reset (0 - Idle, 1 - Reset */
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#define ISL9241_CONTROL3_DIGITAL_RESET BIT(2)
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/* 0: Enable ADC (0 - Active when charging, 1 - Active always) */
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#define ISL9241_CONTROL3_ENABLE_ADC BIT(0)
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/* Indicates various charger status */
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#define ISL9241_REG_INFORMATION2 0x4D
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/* 12: BATGONE pin status (0 = Battery is present, 1 = No battery) */
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#define ISL9241_INFORMATION2_BATGONE_PIN BIT(12)
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/* 14: ACOK pin status (0 = No adapter, 1 = Adapter is present) */
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#define ISL9241_INFORMATION2_ACOK_PIN BIT(14)
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#define ISL9241_REG_CONTROL4 0x4E
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#define ISL9241_REG_CONTROL5 0x4F
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#define ISL9241_REG_NTC_ADC_RESULTS 0x80
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#define ISL9241_REG_VBAT_ADC_RESULTS 0x81
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#define ISL9241_REG_TJ_ADC_RESULTS 0x82
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/* ADC result for adapter current measurements, LSB = 22.2mA */
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#define ISL9241_REG_IADP_ADC_RESULTS 0x83
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#define ISL9241_REG_DC_ADC_RESULTS 0x84
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#define ISL9241_REG_CC_ADC_RESULTS 0x85
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#define ISL9241_REG_VSYS_ADC_RESULTS 0x86
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#define ISL9241_REG_VIN_ADC_RESULTS 0x87
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#define ISL9241_REG_INFORMATION3 0x90
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#define ISL9241_REG_INFORMATION4 0x91
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#define ISL9241_REG_MANUFACTURER_ID 0xFE
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#define ISL9241_REG_DEVICE_ID 0xFF
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#define ISL9241_VIN_ADC_BIT_OFFSET 6
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#define ISL9241_VIN_ADC_STEP_MV 96
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#endif /* __CROS_EC_ISL9241_H */
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