diff options
Diffstat (limited to 'driver/charger/bq24707a.c')
| -rw-r--r-- | driver/charger/bq24707a.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/driver/charger/bq24707a.c b/driver/charger/bq24707a.c deleted file mode 100644 index 53e3f5b531..0000000000 --- a/driver/charger/bq24707a.c +++ /dev/null @@ -1,178 +0,0 @@ -/* Copyright 2012 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * TI bq24707A battery charger driver. - */ - -#include "battery_smart.h" -#include "bq24707a.h" -#include "charger.h" -#include "console.h" -#include "common.h" -#include "i2c.h" -#include "util.h" - -/* Sense resistor configurations and macros */ -#define DEFAULT_SENSE_RESISTOR 10 -#define R_SNS CONFIG_CHARGER_SENSE_RESISTOR -#define R_AC CONFIG_CHARGER_SENSE_RESISTOR_AC -#define REG_TO_CURRENT(REG, RS) ((REG) * DEFAULT_SENSE_RESISTOR / (RS)) -#define CURRENT_TO_REG(CUR, RS) ((CUR) * (RS) / DEFAULT_SENSE_RESISTOR) - -/* - * charge voltage bitmask: 0111 1111 1111 0000 - * charge current bitmask: 0001 1111 1100 0000 - * input current bitmask : 0001 1111 1000 0000 - */ -static const struct charger_info bq24707a_charger_info = { - .name = "bq24707A", - .voltage_max = 19200, - .voltage_min = 1024, - .voltage_step = 16, - .current_max = REG_TO_CURRENT(0x1fc0, R_SNS), - .current_min = REG_TO_CURRENT(0x40, R_SNS), - .current_step = REG_TO_CURRENT(0x40, R_SNS), - .input_current_max = REG_TO_CURRENT(0x1F80, R_AC), - .input_current_min = REG_TO_CURRENT(0x80, R_AC), - .input_current_step = REG_TO_CURRENT(0x80, R_AC), -}; - -/* bq24707a specific interfaces */ - -static inline int sbc_read(int cmd, int *param) -{ - return i2c_read16(I2C_PORT_CHARGER, CHARGER_ADDR, cmd, param); -} - -static inline int sbc_write(int cmd, int param) -{ - return i2c_write16(I2C_PORT_CHARGER, CHARGER_ADDR, cmd, param); -} - -int charger_set_input_current(int input_current) -{ - return sbc_write(BQ24707_INPUT_CURRENT, - CURRENT_TO_REG(input_current, R_AC)); -} - -int charger_get_input_current(int *input_current) -{ - int rv; - int reg; - - rv = sbc_read(BQ24707_INPUT_CURRENT, ®); - if (rv) - return rv; - - *input_current = REG_TO_CURRENT(reg, R_AC); - - return EC_SUCCESS; -} - -int charger_manufacturer_id(int *id) -{ - return sbc_read(BQ24707_MANUFACTURE_ID, id); -} - -int charger_device_id(int *id) -{ - return sbc_read(BQ24707_DEVICE_ID, id); -} - -int charger_get_option(int *option) -{ - return sbc_read(BQ24707_CHARGE_OPTION, option); -} - -int charger_set_option(int option) -{ - return sbc_write(BQ24707_CHARGE_OPTION, option); -} - -/* Charger interfaces */ - -const struct charger_info *charger_get_info(void) -{ - return &bq24707a_charger_info; -} - -int charger_get_status(int *status) -{ - int rv; - int option; - - rv = charger_get_option(&option); - if (rv) - return rv; - - /* Default status */ - *status = CHARGER_LEVEL_2; - - if (option & OPTION_CHARGE_INHIBIT) - *status |= CHARGER_CHARGE_INHIBITED; - - return EC_SUCCESS; -} - -int charger_set_mode(int mode) -{ - int rv; - int option; - - rv = charger_get_option(&option); - if (rv) - return rv; - - if (mode & CHARGE_FLAG_INHIBIT_CHARGE) - option |= OPTION_CHARGE_INHIBIT; - else - option &= ~OPTION_CHARGE_INHIBIT; - return charger_set_option(option); -} - -int charger_get_current(int *current) -{ - int rv; - int reg; - - rv = sbc_read(SB_CHARGING_CURRENT, ®); - if (rv) - return rv; - - *current = REG_TO_CURRENT(reg, R_SNS); - return EC_SUCCESS; -} - -int charger_set_current(int current) -{ - current = charger_closest_current(current); - - return sbc_write(SB_CHARGING_CURRENT, CURRENT_TO_REG(current, R_SNS)); -} - -int charger_get_voltage(int *voltage) -{ - return sbc_read(SB_CHARGING_VOLTAGE, voltage); -} - -int charger_set_voltage(int voltage) -{ - return sbc_write(SB_CHARGING_VOLTAGE, voltage); -} - -/* Charging power state initialization */ -int charger_post_init(void) -{ - /* - * Note: bq24725 power on reset state is: - * watch dog timer = 175 sec - * input current limit = ~1/2 maximum setting - * charging voltage = 0 mV - * charging current = 0 mA - * IOUT = 20x adapter current sense - */ - - /* Set charger input current limit */ - return charger_set_input_current(CONFIG_CHARGER_INPUT_CURRENT); -} |