diff options
Diffstat (limited to 'driver/charger/bq24715.c')
| -rw-r--r-- | driver/charger/bq24715.c | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/driver/charger/bq24715.c b/driver/charger/bq24715.c deleted file mode 100644 index d2eb0e432a..0000000000 --- a/driver/charger/bq24715.c +++ /dev/null @@ -1,252 +0,0 @@ -/* Copyright 2013 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 bq24715 battery charger driver. - */ - -#include "battery_smart.h" -#include "bq24715.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) - -/* Note: it is assumed that the sense resistors are 10mOhm. */ - -static const struct charger_info bq24715_charger_info = { - .name = "bq24715", - .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), -}; - -static inline enum ec_error_list sbc_read(int chgnum, int cmd, int *param) -{ - return i2c_read16(chg_chips[chgnum].i2c_port, - chg_chips[chgnum].i2c_addr_flags, - cmd, param); -} - -static inline enum ec_error_list sbc_write(int chgnum, int cmd, int param) -{ - return i2c_write16(chg_chips[chgnum].i2c_port, - chg_chips[chgnum].i2c_addr_flags, - cmd, param); -} - -static enum ec_error_list bq24715_set_input_current_limit(int chgnum, - int input_current) -{ - return sbc_write(chgnum, BQ24715_INPUT_CURRENT, - CURRENT_TO_REG(input_current, R_AC)); -} - -static enum ec_error_list bq24715_get_input_current_limit(int chgnum, - int *input_current) -{ - int rv; - int reg; - - rv = sbc_read(chgnum, BQ24715_INPUT_CURRENT, ®); - if (rv) - return rv; - - *input_current = REG_TO_CURRENT(reg, R_AC); - - return EC_SUCCESS; -} - -static enum ec_error_list bq24715_manufacturer_id(int chgnum, int *id) -{ - return sbc_read(chgnum, BQ24715_MANUFACTURER_ID, id); -} - -static enum ec_error_list bq24715_device_id(int chgnum, int *id) -{ - return sbc_read(chgnum, BQ24715_DEVICE_ID, id); -} - -static enum ec_error_list bq24715_get_option(int chgnum, int *option) -{ - return sbc_read(chgnum, BQ24715_CHARGE_OPTION, option); -} - -static enum ec_error_list bq24715_set_option(int chgnum, int option) -{ - return sbc_write(chgnum, BQ24715_CHARGE_OPTION, option); -} - -/* Charger interfaces */ - -static const struct charger_info *bq24715_get_info(int chgnum) -{ - return &bq24715_charger_info; -} - -static enum ec_error_list bq24715_get_status(int chgnum, int *status) -{ - int rv; - int option; - - rv = bq24715_get_option(chgnum, &option); - if (rv) - return rv; - - /* Default status */ - *status = CHARGER_LEVEL_2; - - if ((option & OPT_CHARGE_INHIBIT_MASK) == OPT_CHARGE_DISABLE) - *status |= CHARGER_CHARGE_INHIBITED; - - return EC_SUCCESS; -} - -static enum ec_error_list bq24715_set_mode(int chgnum, int mode) -{ - int rv; - int option; - - rv = bq24715_get_option(chgnum, &option); - if (rv) - return rv; - - option &= ~OPT_CHARGE_INHIBIT_MASK; - if (mode & CHARGE_FLAG_INHIBIT_CHARGE) - option |= OPT_CHARGE_DISABLE; - else - option |= OPT_CHARGE_ENABLE; - return bq24715_set_option(chgnum, option); -} - -static enum ec_error_list bq24715_get_current(int chgnum, int *current) -{ - int rv; - int reg; - - rv = sbc_read(chgnum, SB_CHARGING_CURRENT, ®); - if (rv) - return rv; - - *current = REG_TO_CURRENT(reg, R_SNS); - return EC_SUCCESS; -} - -static enum ec_error_list bq24715_set_current(int chgnum, int current) -{ - current = charger_closest_current(current); - - return sbc_write(chgnum, SB_CHARGING_CURRENT, - CURRENT_TO_REG(current, R_SNS)); -} - -/* The voltage setting needs to be cached to work with the current - * charging infrastructure and state machine. The reason is that - * the state machine expects to be able to set a 0V charging voltage. - * The bq24715 does not allow this in the hardware register. Therefore - * 0V is handled specially to appease the state machine. */ -static int cached_voltage; - -static enum ec_error_list bq24715_get_voltage(int chgnum, int *voltage) -{ - int ret; - - if (cached_voltage == 0) { - *voltage = cached_voltage; - return EC_SUCCESS; - } - - ret = sbc_read(chgnum, SB_CHARGING_VOLTAGE, &cached_voltage); - - if (ret == EC_SUCCESS) - *voltage = cached_voltage; - - return ret; -} - -static enum ec_error_list bq24715_set_voltage(int chgnum, int voltage) -{ - cached_voltage = voltage; - return sbc_write(chgnum, SB_CHARGING_VOLTAGE, voltage); -} - -/* Charging power state initialization */ -static enum ec_error_list bq24715_post_init(int chgnum) -{ - int rv; - int option; - - rv = bq24715_get_option(chgnum, &option); - if (rv) - return rv; - - /* Don't be noisy */ - option |= OPT_AUDIO_FREQ_40KHZ_LIMIT; - - /* Always monitor adapter current (40X multiplier). */ - option |= OPT_FIX_IOUT_ALWAYS; - option &= ~OPT_IOUT_MASK; - option &= ~OPT_LEARN_MASK; - - /* Enable dynamic power management */ - option |= OPT_IDPM_ENABLE; - - rv = bq24715_set_option(chgnum, option); - if (rv) - return rv; - - rv = bq24715_set_input_current_limit(chgnum, - CONFIG_CHARGER_INPUT_CURRENT); - return rv; -} - -static enum ec_error_list bq24715_discharge_on_ac(int chgnum, int enable) -{ - int rv; - int option; - - rv = bq24715_get_option(chgnum, &option); - if (rv) - return rv; - - option &= ~OPT_LEARN_MASK; - if (enable) - option |= OPT_LEARN_ENABLE; - else - option |= OPT_LEARN_DISABLE; - rv = bq24715_set_option(chgnum, option); - - return rv; -} - -const struct charger_drv bq24715_drv = { - .post_init = &bq24715_post_init, - .get_info = &bq24715_get_info, - .get_status = &bq24715_get_status, - .set_mode = &bq24715_set_mode, - .get_current = &bq24715_get_current, - .set_current = &bq24715_set_current, - .get_voltage = &bq24715_get_voltage, - .set_voltage = &bq24715_set_voltage, - .discharge_on_ac = &bq24715_discharge_on_ac, - .set_input_current_limit = &bq24715_set_input_current_limit, - .get_input_current_limit = &bq24715_get_input_current_limit, - .manufacturer_id = &bq24715_manufacturer_id, - .device_id = &bq24715_device_id, - .get_option = &bq24715_get_option, - .set_option = &bq24715_set_option, -}; |