132 lines
4.4 KiB
C
132 lines
4.4 KiB
C
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/* Copyright 2014 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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* TI bq24773 battery charger driver.
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*/
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#ifndef __CROS_EC_BQ24773_H
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#define __CROS_EC_BQ24773_H
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/* for i2c_read and i2c_write functions. */
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#include "i2c.h"
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/* I2C address */
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#define BQ24770_ADDR_FLAGS 0x09
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#define BQ24773_ADDR_FLAGS 0x6a
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/* Chip specific commands */
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#define BQ24770_CHARGE_OPTION0 0x12
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#define BQ24770_CHARGE_OPTION1 0x3B
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#define BQ24770_CHARGE_OPTION2 0x38
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#define BQ24770_PROCHOT_OPTION0 0x3C
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#define BQ24770_PROCHOT_OPTION1 0x3D
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#define BQ24770_CHARGE_CURRENT 0x14
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#define BQ24770_MAX_CHARGE_VOLTAGE 0x15
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#define BQ24770_MIN_SYSTEM_VOLTAGE 0x3E
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#define BQ24770_INPUT_CURRENT 0x3F
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#define BQ24770_MANUFACTURE_ID 0xFE
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#define BQ24770_DEVICE_ADDRESS 0xFF
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#define BQ24773_CHARGE_OPTION0 0x00
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#define BQ24773_CHARGE_OPTION1 0x02
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#define BQ24773_PROCHOT_OPTION0 0x04
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#define BQ24773_PROCHOT_OPTION1 0x06
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#define BQ24773_PROCHOT_STATUS 0x08
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#define BQ24773_DEVICE_ADDRESS 0x09
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#define BQ24773_CHARGE_CURRENT 0x0A
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#define BQ24773_MAX_CHARGE_VOLTAGE 0x0C
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#define BQ24773_MIN_SYSTEM_VOLTAGE 0x0E
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#define BQ24773_INPUT_CURRENT 0x0F
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#define BQ24773_CHARGE_OPTION2 0x10
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/* Option bits */
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#define OPTION0_CHARGE_INHIBIT BIT(0)
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#define OPTION0_LEARN_ENABLE BIT(5)
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#define OPTION0_SWITCHING_FREQ_MASK (3 << 8)
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#define OPTION0_SWITCHING_FREQ_600KHZ (0 << 8)
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#define OPTION0_SWITCHING_FREQ_800KHZ BIT(8)
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#define OPTION0_SWITCHING_FREQ_1000KHZ (2 << 8)
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#define OPTION0_SWITCHING_FREQ_1200KHZ (3 << 8)
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#define OPTION2_EN_EXTILIM BIT(7)
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/* Prochot Option bits */
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#define PROCHOT_OPTION1_SELECTOR_MASK 0x7f /* [6:0] PROCHOT SELECTOR */
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/* ChargeCurrent Register - 0x14 (mA) */
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#define CHARGE_I_OFF 0
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#define CHARGE_I_MIN 128
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#define CHARGE_I_MAX 8128
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#define CHARGE_I_STEP 64
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/* MaxChargeVoltage Register - 0x15 (mV) */
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#define CHARGE_V_MIN 1024
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#define CHARGE_V_MAX 19200
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#define CHARGE_V_STEP 16
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/* InputCurrent Register - 0x3f (mA) */
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#define INPUT_I_MIN 128
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#define INPUT_I_MAX 8128
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#define INPUT_I_STEP 64
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#ifdef CONFIG_CHARGER_BQ24770
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#define CHARGER_NAME "bq24770"
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#define I2C_ADDR_CHARGER_FLAGS BQ24770_ADDR_FLAGS
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#define REG_CHARGE_OPTION0 BQ24770_CHARGE_OPTION0
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#define REG_CHARGE_OPTION1 BQ24770_CHARGE_OPTION1
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#define REG_CHARGE_OPTION2 BQ24770_CHARGE_OPTION2
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#define REG_PROCHOT_OPTION0 BQ24770_PROCHOT_OPTION0
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#define REG_PROCHOT_OPTION1 BQ24770_PROCHOT_OPTION1
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#define REG_CHARGE_CURRENT BQ24770_CHARGE_CURRENT
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#define REG_MAX_CHARGE_VOLTAGE BQ24770_MAX_CHARGE_VOLTAGE
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#define REG_MIN_SYSTEM_VOLTAGE BQ24770_MIN_SYSTEM_VOLTAGE
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#define REG_INPUT_CURRENT BQ24770_INPUT_CURRENT
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#define REG_MANUFACTURE_ID BQ24770_MANUFACTURE_ID
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#define REG_DEVICE_ADDRESS BQ24770_DEVICE_ADDRESS
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#elif defined(CONFIG_CHARGER_BQ24773)
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#define CHARGER_NAME "bq24773"
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#define I2C_ADDR_CHARGER_FLAGS BQ24773_ADDR_FLAGS
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#define REG_CHARGE_OPTION0 BQ24773_CHARGE_OPTION0
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#define REG_CHARGE_OPTION1 BQ24773_CHARGE_OPTION1
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#define REG_CHARGE_OPTION2 BQ24773_CHARGE_OPTION2
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#define REG_PROCHOT_OPTION0 BQ24773_PROCHOT_OPTION0
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#define REG_PROCHOT_OPTION1 BQ24773_PROCHOT_OPTION1
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#define REG_CHARGE_CURRENT BQ24773_CHARGE_CURRENT
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#define REG_MAX_CHARGE_VOLTAGE BQ24773_MAX_CHARGE_VOLTAGE
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#define REG_MIN_SYSTEM_VOLTAGE BQ24773_MIN_SYSTEM_VOLTAGE
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#define REG_INPUT_CURRENT BQ24773_INPUT_CURRENT
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#define REG_DEVICE_ADDRESS BQ24773_DEVICE_ADDRESS
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#endif
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#ifdef CONFIG_CHARGER_BQ24773
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static inline int raw_read8(int offset, int *value)
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{
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return i2c_read8(I2C_PORT_CHARGER, I2C_ADDR_CHARGER_FLAGS,
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offset, value);
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}
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static inline int raw_write8(int offset, int value)
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{
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return i2c_write8(I2C_PORT_CHARGER, I2C_ADDR_CHARGER_FLAGS,
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offset, value);
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}
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#endif
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static inline int raw_read16(int offset, int *value)
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{
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return i2c_read16(I2C_PORT_CHARGER, I2C_ADDR_CHARGER_FLAGS,
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offset, value);
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}
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static inline int raw_write16(int offset, int value)
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{
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return i2c_write16(I2C_PORT_CHARGER, I2C_ADDR_CHARGER_FLAGS,
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offset, value);
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}
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#endif /* __CROS_EC_BQ24773_H */
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