diff options
Diffstat (limited to 'driver/charger/bq24773.c')
| -rw-r--r-- | driver/charger/bq24773.c | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/driver/charger/bq24773.c b/driver/charger/bq24773.c deleted file mode 100644 index d242f105c6..0000000000 --- a/driver/charger/bq24773.c +++ /dev/null @@ -1,308 +0,0 @@ -/* Copyright 2014 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 bq24773 battery charger driver. - */ - -#include "battery_smart.h" -#include "bq24773.h" -#include "charger.h" -#include "console.h" -#include "common.h" -#include "util.h" - -/* - * on the I2C version of the charger, - * some registers are 8-bit only (eg input current) - * and they are shifted by 6 bits compared to the SMBUS version (bq24770). - */ -#define REG8_SHIFT 6 -#define R8 (1 << (REG8_SHIFT)) -/* 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) -#define REG8_TO_CURRENT(REG, RS) ((REG) * DEFAULT_SENSE_RESISTOR / (RS) * R8) -#define CURRENT_TO_REG8(CUR, RS) ((CUR) * (RS) / DEFAULT_SENSE_RESISTOR / R8) - -/* ChargeCurrent Register - 0x14 (mA) */ -#define CHARGE_I_OFF 0 -#define CHARGE_I_MIN 128 -#define CHARGE_I_MAX 8128 -#define CHARGE_I_STEP 64 - -/* MaxChargeVoltage Register - 0x15 (mV) */ -#define CHARGE_V_MIN 1024 -#define CHARGE_V_MAX 19200 -#define CHARGE_V_STEP 16 - -/* InputCurrent Register - 0x3f (mA) */ -#define INPUT_I_MIN 128 -#define INPUT_I_MAX 8128 -#define INPUT_I_STEP 64 - -/* Charger parameters */ -static const struct charger_info bq2477x_charger_info = { - .name = CHARGER_NAME, - .voltage_max = CHARGE_V_MAX, - .voltage_min = CHARGE_V_MIN, - .voltage_step = CHARGE_V_STEP, - .current_max = REG_TO_CURRENT(CHARGE_I_MAX, R_SNS), - .current_min = REG_TO_CURRENT(CHARGE_I_MIN, R_SNS), - .current_step = REG_TO_CURRENT(CHARGE_I_STEP, R_SNS), - .input_current_max = REG_TO_CURRENT(INPUT_I_MAX, R_AC), - .input_current_min = REG_TO_CURRENT(INPUT_I_MIN, R_AC), - .input_current_step = REG_TO_CURRENT(INPUT_I_STEP, R_AC), -}; - -#ifdef CONFIG_CHARGER_BQ24773 -static inline enum ec_error_list raw_read8(int chgnum, int offset, int *value) -{ - return i2c_read8(chg_chips[chgnum].i2c_port, - chg_chips[chgnum].i2c_addr_flags, - offset, value); -} - -static inline enum ec_error_list raw_write8(int chgnum, int offset, int value) -{ - return i2c_write8(chg_chips[chgnum].i2c_port, - chg_chips[chgnum].i2c_addr_flags, - offset, value); -} -#endif - -static inline enum ec_error_list raw_read16(int chgnum, int offset, int *value) -{ - return i2c_read16(chg_chips[chgnum].i2c_port, - chg_chips[chgnum].i2c_addr_flags, - offset, value); -} - -static inline enum ec_error_list raw_write16(int chgnum, int offset, int value) -{ - return i2c_write16(chg_chips[chgnum].i2c_port, - chg_chips[chgnum].i2c_addr_flags, - offset, value); -} - - -/* chip specific interfaces */ - -static enum ec_error_list bq2477x_set_input_current_limit(int chgnum, - int input_current) -{ -#ifdef CONFIG_CHARGER_BQ24770 - return raw_write16(chgnum, REG_INPUT_CURRENT, - CURRENT_TO_REG(input_current, R_AC)); -#elif defined(CONFIG_CHARGER_BQ24773) - return raw_write8(chgnum, REG_INPUT_CURRENT, - CURRENT_TO_REG8(input_current, R_AC)); -#endif -} - -static enum ec_error_list bq2477x_get_input_current_limit(int chgnum, - int *input_current) -{ - int rv; - int reg; - -#ifdef CONFIG_CHARGER_BQ24770 - rv = raw_read16(chgnum, REG_INPUT_CURRENT, ®); -#elif defined(CONFIG_CHARGER_BQ24773) - rv = raw_read8(chgnum, REG_INPUT_CURRENT, ®); -#endif - if (rv) - return rv; - -#ifdef CONFIG_CHARGER_BQ24770 - *input_current = REG_TO_CURRENT(reg, R_AC); -#elif defined(CONFIG_CHARGER_BQ24773) - *input_current = REG8_TO_CURRENT(reg, R_AC); -#endif - return EC_SUCCESS; -} - -static enum ec_error_list bq2477x_manufacturer_id(int chgnum, int *id) -{ -#ifdef CONFIG_CHARGER_BQ24770 - return raw_read16(chgnum, REG_MANUFACTURE_ID, id); -#elif defined(CONFIG_CHARGER_BQ24773) - *id = 0x40; /* TI */ - return EC_SUCCESS; -#endif -} - -static enum ec_error_list bq2477x_device_id(int chgnum, int *id) -{ -#ifdef CONFIG_CHARGER_BQ24770 - return raw_read16(chgnum, REG_DEVICE_ADDRESS, id); -#elif defined(CONFIG_CHARGER_BQ24773) - return raw_read8(chgnum, REG_DEVICE_ADDRESS, id); -#endif -} - -static enum ec_error_list bq2477x_get_option(int chgnum, int *option) -{ - return raw_read16(chgnum, REG_CHARGE_OPTION0, option); -} - -static enum ec_error_list bq2477x_set_option(int chgnum, int option) -{ - return raw_write16(chgnum, REG_CHARGE_OPTION0, option); -} - -/* Charger interfaces */ - -static const struct charger_info *bq2477x_get_info(int chgnum) -{ - return &bq2477x_charger_info; -} - -static enum ec_error_list bq2477x_get_status(int chgnum, int *status) -{ - int rv; - int option; - - rv = bq2477x_get_option(chgnum, &option); - if (rv) - return rv; - - /* Default status */ - *status = CHARGER_LEVEL_2; - - if (option & OPTION0_CHARGE_INHIBIT) - *status |= CHARGER_CHARGE_INHIBITED; - - return EC_SUCCESS; -} - -static enum ec_error_list bq2477x_set_mode(int chgnum, int mode) -{ - int rv; - int option; - - rv = bq2477x_get_option(chgnum, &option); - if (rv) - return rv; - - if (mode & CHARGE_FLAG_INHIBIT_CHARGE) - option |= OPTION0_CHARGE_INHIBIT; - else - option &= ~OPTION0_CHARGE_INHIBIT; - return bq2477x_set_option(chgnum, option); -} - -static enum ec_error_list bq2477x_get_current(int chgnum, int *current) -{ - int rv; - int reg; - - rv = raw_read16(chgnum, REG_CHARGE_CURRENT, ®); - - if (rv) - return rv; - - *current = REG_TO_CURRENT(reg, R_SNS); - return EC_SUCCESS; -} - -static enum ec_error_list bq2477x_set_current(int chgnum, int current) -{ - current = charger_closest_current(current); - return raw_write16(chgnum, REG_CHARGE_CURRENT, - CURRENT_TO_REG(current, R_SNS)); -} - -static enum ec_error_list bq2477x_get_voltage(int chgnum, int *voltage) -{ - return raw_read16(chgnum, REG_MAX_CHARGE_VOLTAGE, voltage); -} - -static enum ec_error_list bq2477x_set_voltage(int chgnum, int voltage) -{ - voltage = charger_closest_voltage(voltage); - return raw_write16(chgnum, REG_MAX_CHARGE_VOLTAGE, voltage); -} - -/* Charging power state initialization */ -static enum ec_error_list bq2477x_post_init(int chgnum) -{ - int rv, option; -#ifdef CONFIG_CHARGER_ILIM_PIN_DISABLED - int option2; -#endif - - rv = bq2477x_get_option(chgnum, &option); - if (rv) - return rv; - - option &= ~OPTION0_LEARN_ENABLE; - rv = bq2477x_set_option(chgnum, option); - if (rv) - return rv; - - /* Turn off PROCHOT warning */ - rv = raw_read16(chgnum, REG_PROCHOT_OPTION1, &option); - if (rv) - return rv; - - option &= ~PROCHOT_OPTION1_SELECTOR_MASK; - rv = raw_write16(chgnum, REG_PROCHOT_OPTION1, option); - - if (rv) - return rv; - -#ifdef CONFIG_CHARGER_ILIM_PIN_DISABLED - /* Read the external ILIM pin enabled flag. */ - rv = raw_read16(chgnum, REG_CHARGE_OPTION2, &option2); - if (rv) - return rv; - - /* Set ILIM pin disabled if it is currently enabled. */ - if (option2 & OPTION2_EN_EXTILIM) { - option2 &= ~OPTION2_EN_EXTILIM; - rv = raw_write16(chgnum, REG_CHARGE_OPTION2, option2); - } - return rv; -#else - return EC_SUCCESS; -#endif -} - -static enum ec_error_list bq2477x_discharge_on_ac(int chgnum, int enable) -{ - int rv; - int option; - - rv = bq2477x_get_option(chgnum, &option); - if (rv) - return rv; - - if (enable) - rv = bq2477x_set_option(chgnum, option | OPTION0_LEARN_ENABLE); - else - rv = bq2477x_set_option(chgnum, option & ~OPTION0_LEARN_ENABLE); - - return rv; -} - -const struct charger_drv bq2477x_drv = { - .post_init = &bq2477x_post_init, - .get_info = &bq2477x_get_info, - .get_status = &bq2477x_get_status, - .set_mode = &bq2477x_set_mode, - .get_current = &bq2477x_get_current, - .set_current = &bq2477x_set_current, - .get_voltage = &bq2477x_get_voltage, - .set_voltage = &bq2477x_set_voltage, - .discharge_on_ac = &bq2477x_discharge_on_ac, - .set_input_current_limit = &bq2477x_set_input_current_limit, - .get_input_current_limit = &bq2477x_get_input_current_limit, - .manufacturer_id = &bq2477x_manufacturer_id, - .device_id = &bq2477x_device_id, - .get_option = &bq2477x_get_option, - .set_option = &bq2477x_set_option, -}; |