mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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Driver: bd99955: Add ROHM bd99955 initial charger driver
BUG=none
BRANCH=none
TEST=Manually tested on Amenia prototype.
Used 'charger' console command to check the charger properties.
Used 'battery' console command to check the battery charging.
Change-Id: Ic8787bfa3e0e3a615542b9cf72e6404fccc96e18
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/334021
Commit-Ready: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Tested-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>
This commit is contained in:
Vijay Hiremath
committed by
chrome-bot
chrome-bot
parent
719f5d6d01
commit
4826d592ce
@@ -30,6 +30,7 @@ driver-$(CONFIG_BATTERY_SAMUS)+=battery/samus.o
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driver-$(CONFIG_BATTERY_SMART)+=battery/smart.o
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# Battery charger ICs
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driver-$(CONFIG_CHARGER_BD99955)+=charger/bd99955.o
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driver-$(CONFIG_CHARGER_BQ24192)+=charger/bq24192.o
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driver-$(CONFIG_CHARGER_BQ24707A)+=charger/bq24707a.o
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driver-$(CONFIG_CHARGER_BQ24715)+=charger/bq24715.o
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234
driver/charger/bd99955.c
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234
driver/charger/bd99955.c
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@@ -0,0 +1,234 @@
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/* Copyright 2016 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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* ROHM BD99955 battery charger driver.
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*/
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#include "battery.h"
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#include "battery_smart.h"
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#include "bd99955.h"
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#include "charger.h"
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#include "console.h"
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#include "i2c.h"
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#include "task.h"
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#include "util.h"
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/* Console output macros */
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#define CPRINTS(format, args...) cprints(CC_CHARGER, format, ## args)
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/* Charger parameters */
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static const struct charger_info bd99955_charger_info = {
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.name = CHARGER_NAME,
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.voltage_max = CHARGE_V_MAX,
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.voltage_min = CHARGE_V_MIN,
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.voltage_step = CHARGE_V_STEP,
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.current_max = CHARGE_I_MAX,
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.current_min = CHARGE_I_MIN,
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.current_step = CHARGE_I_STEP,
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.input_current_max = INPUT_I_MAX,
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.input_current_min = INPUT_I_MIN,
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.input_current_step = INPUT_I_STEP,
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};
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/* Charge command code map */
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static enum BD99955_COMMANDS charger_map_cmd = BD99955_INVALID_COMMAND;
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static struct mutex bd99955_map_mutex;
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static inline int ch_raw_read16(int cmd, int *param,
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enum BD99955_COMMANDS map_cmd)
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{
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int rv;
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/* Map the Charge command code to appropriate region */
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mutex_lock(&bd99955_map_mutex);
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if (charger_map_cmd != map_cmd) {
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rv = i2c_write16(I2C_PORT_CHARGER, I2C_ADDR_CHARGER,
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BD99955_CMD_MAP_SET, map_cmd);
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if (rv)
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goto bd99955_read_cleanup;
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charger_map_cmd = map_cmd;
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}
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rv = i2c_read16(I2C_PORT_CHARGER, I2C_ADDR_CHARGER, cmd, param);
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bd99955_read_cleanup:
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mutex_unlock(&bd99955_map_mutex);
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return rv;
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}
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static inline int ch_raw_write16(int cmd, int param,
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enum BD99955_COMMANDS map_cmd)
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{
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int rv;
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/* Map the Charge command code to appropriate region */
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mutex_lock(&bd99955_map_mutex);
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if (charger_map_cmd != map_cmd) {
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rv = i2c_write16(I2C_PORT_CHARGER, I2C_ADDR_CHARGER,
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BD99955_CMD_MAP_SET, map_cmd);
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if (rv)
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goto bd99955_write_cleanup;
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charger_map_cmd = map_cmd;
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}
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rv = i2c_write16(I2C_PORT_CHARGER, I2C_ADDR_CHARGER, cmd, param);
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bd99955_write_cleanup:
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mutex_unlock(&bd99955_map_mutex);
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return rv;
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}
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/* chip specific interfaces */
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int charger_set_input_current(int input_current)
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{
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int rv;
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/* Input current step 32 mA */
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input_current &= ~0x1F;
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rv = ch_raw_write16(BD99955_CMD_IBUS_LIM_SET, input_current,
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BD99955_BAT_CHG_COMMAND);
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if (rv)
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return rv;
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return ch_raw_write16(BD99955_CMD_ICC_LIM_SET, input_current,
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BD99955_BAT_CHG_COMMAND);
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}
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int charger_get_input_current(int *input_current)
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{
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int rv;
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rv = ch_raw_read16(BD99955_CMD_IBUS_LIM_SET, input_current,
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BD99955_BAT_CHG_COMMAND);
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if (rv)
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return rv;
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return ch_raw_read16(BD99955_CMD_ICC_LIM_SET, input_current,
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BD99955_BAT_CHG_COMMAND);
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}
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int charger_manufacturer_id(int *id)
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{
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return EC_ERROR_UNIMPLEMENTED;
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}
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int charger_device_id(int *id)
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{
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return ch_raw_read16(BD99955_CMD_CHIP_ID, id, BD99955_EXTENDED_COMMAND);
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}
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int charger_get_option(int *option)
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{
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return EC_ERROR_UNIMPLEMENTED;
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}
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int charger_set_option(int option)
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{
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return EC_ERROR_UNIMPLEMENTED;
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}
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/* Charger interfaces */
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const struct charger_info *charger_get_info(void)
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{
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return &bd99955_charger_info;
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}
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int charger_get_status(int *status)
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{
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*status = CHARGER_LEVEL_2;
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return EC_SUCCESS;
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}
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int charger_set_mode(int mode)
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{
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/* BD99955 does not support inhibit mode setting. */
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return EC_SUCCESS;
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}
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int charger_get_current(int *current)
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{
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return ch_raw_read16(BD99955_CMD_CHG_CURRENT, current,
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BD99955_BAT_CHG_COMMAND);
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}
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int charger_set_current(int current)
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{
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/* Charge current step 64 mA */
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current &= ~0x3F;
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return ch_raw_write16(BD99955_CMD_CHG_CURRENT, current,
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BD99955_BAT_CHG_COMMAND);
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}
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int charger_get_voltage(int *voltage)
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{
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return ch_raw_read16(BD99955_CMD_CHG_VOLTAGE, voltage,
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BD99955_BAT_CHG_COMMAND);
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}
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int charger_set_voltage(int voltage)
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{
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/*
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* The BD99955 will drop voltage to as low as requested. As the
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* charger state machine will pass in 0 voltage, protect the system
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* voltage by capping to the minimum. The reason is that the BD99955
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* only can regulate the system voltage which will kill the board's
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* power if below 0.
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*/
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if (voltage == 0) {
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const struct battery_info *bi = battery_get_info();
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voltage = bi->voltage_min;
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}
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/* Charge voltage step 16 mV */
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voltage &= ~0x0F;
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return ch_raw_write16(BD99955_CMD_CHG_VOLTAGE, voltage,
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BD99955_BAT_CHG_COMMAND);
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}
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int charger_post_init(void)
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{
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int rv;
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/*
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* TODO: Disable charger & re-enable to initialize it.
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*/
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rv = charger_discharge_on_ac(1);
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if (rv)
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return rv;
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return charger_discharge_on_ac(0);
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}
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int charger_discharge_on_ac(int enable)
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{
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int rv;
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int reg;
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rv = ch_raw_read16(BD99955_CMD_CHGOP_SET2, ®,
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BD99955_EXTENDED_COMMAND);
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if (rv)
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return rv;
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if (enable) {
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reg |= BD99955_CHGOP_SET2_BATT_LEARN;
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reg &= ~BD99955_CHGOP_SET2_CHG_EN;
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} else {
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reg &= ~BD99955_CHGOP_SET2_BATT_LEARN;
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reg |= BD99955_CHGOP_SET2_CHG_EN;
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}
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return ch_raw_write16(BD99955_CMD_CHGOP_SET2, reg,
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BD99955_EXTENDED_COMMAND);
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}
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166
driver/charger/bd99955.h
Normal file
166
driver/charger/bd99955.h
Normal file
@@ -0,0 +1,166 @@
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/* Copyright 2016 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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* ROHM BD99955 battery charger driver.
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*/
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#ifndef __CROS_EC_BD99955_H
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#define __CROS_EC_BD99955_H
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#define BD99955_ADDR 0x12 /* 7bit address 0001_001 */
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#define I2C_ADDR_CHARGER BD99955_ADDR
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/* BD99955 commands to change the command code map */
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enum BD99955_COMMANDS {
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BD99955_BAT_CHG_COMMAND,
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BD99955_EXTENDED_COMMAND,
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BD99955_DEBUG_COMMAND,
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BD99955_INVALID_COMMAND
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};
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/* Charger parameters */
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#define CHARGER_NAME "bd99955"
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#define CHARGE_V_MAX 19200
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#define CHARGE_V_MIN 3072
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#define CHARGE_V_STEP 16
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#define CHARGE_I_MAX 16320
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#define CHARGE_I_MIN 0
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#define CHARGE_I_OFF 0
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#define CHARGE_I_STEP 64
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#define INPUT_I_MAX 16352
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#define INPUT_I_MIN 0
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#define INPUT_I_STEP 32
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/* Battery Charger Commands */
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#define BD99955_CMD_CHG_CURRENT 0x14
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#define BD99955_CMD_CHG_VOLTAGE 0x15
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#define BD99955_CMD_IBUS_LIM_SET 0x3C
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#define BD99955_CMD_ICC_LIM_SET 0x3D
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#define BD99955_CMD_PROTECT_SET 0x3E
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#define BD99955_CMD_MAP_SET 0x3F
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/* Extended commands */
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#define BD99955_CMD_CHGSTM_STATUS 0x00
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#define BD99955_CMD_VBAT_VSYS_STATUS 0x01
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#define BD99955_CMD_VBUS_VCC_STATUS 0x02
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#define BD99955_CMD_CHGOP_STATUS 0x03
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#define BD99955_CMD_WDT_STATUS 0x04
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#define BD99955_CMD_CUR_ILIM_VAL 0x05
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#define BD99955_CMD_SEL_ILIM_VAL 0x06
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#define BD99955_CMD_EXT_IBUS_LIM_SET 0x07
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#define BD99955_CMD_EXT_ICC_LIM_SET 0x08
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#define BD99955_CMD_IOTG_LIM_SET 0x09
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#define BD99955_CMD_VIN_CTRL_SET 0x0A
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#define BD99955_CMD_CHGOP_SET1 0x0B
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#define BD99955_CMD_CHGOP_SET2 0x0C
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#define BD99955_CMD_VBUSCLPS_TH_SET 0x0D
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#define BD99955_CMD_VCCCLPS_TH_SET 0x0E
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#define BD99955_CMD_CHGWDT_SET 0x0F
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#define BD99955_CMD_BATTWDT_SET 0x10
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#define BD99955_CMD_VSYSREG_SETa 0x11
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#define BD99955_CMD_VSYSVAL_THH_SET 0x12
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#define BD99955_CMD_VSYSVAL_THL_SET 0x13
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#define BD99955_CMD_ITRICH_SET 0x14
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#define BD99955_CMD_IPRECH_SET 0x15
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#define BD99955_CMD_ICHG_SET 0x16
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#define BD99955_CMD_ITERM_SET 0x17
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#define BD99955_CMD_VPRECHG_TH_SET 0x18
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#define BD99955_CMD_VRBOOST_SET 0x19
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#define BD99955_CMD_VFASTCHG_REG_SET1 0x1A
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#define BD99955_CMD_VFASTCHG_REG_SET2 0x1B
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#define BD99955_CMD_VFASTCHG_REG_SET3 0x1C
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#define BD99955_CMD_VRECHG_SET 0x1D
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#define BD99955_CMD_VBATOVP_SET 0x1E
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#define BD99955_CMD_IBATSHORT_SET 0x1F
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#define BD99955_CMD_PROCHOT_CTRL_SET 0x20
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#define BD99955_CMD_PROCHOT_ICRIT_SET 0x21
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#define BD99955_CMD_PROCHOT_INORM_SET 0x22
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#define BD99955_CMD_PROCHOT_IDCHG_SET 0x23
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#define BD99955_CMD_PROCHOT_VSYS_SET 0x24
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#define BD99955_CMD_PMON_IOUT_CTRL_SET 0x25
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#define BD99955_CMD_PMON_DACIN_VAL 0x26
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#define BD99955_CMD_IOUT_DACIN_VAL 0x27
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#define BD99955_CMD_VCC_UCD_SET 0x28
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#define BD99955_CMD_VCC_UCD_STATUS 0x29
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#define BD99955_CMD_VCC_IDD_STATUS 0x2A
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#define BD99955_CMD_VCC_UCD_FCTRL_SET 0x2B
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#define BD99955_CMD_VCC_UCD_FCTRL_EN 0x2C
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#define BD99955_CMD_VBUS_UCD_SET 0x30
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#define BD99955_CMD_VBUS_UCD_STATUS 0x31
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#define BD99955_CMD_VBUS_IDD_STATUS 0x32
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#define BD99955_CMD_VBUS_UCD_FCTRL_SET 0x33
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#define BD99955_CMD_VBUS_UCD_FCTRL_EN 0x34
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#define BD99955_CMD_CHIP_ID 0x38
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#define BD99955_CMD_CHIP_REV 0x39
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#define BD99955_CMD_IC_SET1 0x3A
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#define BD99955_CMD_IC_SET2 0x3B
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#define BD99955_CMD_SYSTEM_STATUS 0x3C
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#define BD99955_CMD_SYSTEM_CTRL_SET 0x3D
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#define BD99955_CMD_EXT_PROTECT_SET 0x3E
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#define BD99955_CMD_EXT_MAP_SET 0x3F
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#define BD99955_CMD_VM_CTRL_SET 0x40
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#define BD99955_CMD_THERM_WINDOW_SET1 0x41
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#define BD99955_CMD_THERM_WINDOW_SET2 0x42
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#define BD99955_CMD_THERM_WINDOW_SET3 0x43
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#define BD99955_CMD_THERM_WINDOW_SET4 0x44
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#define BD99955_CMD_THERM_WINDOW_SET5 0x45
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#define BD99955_CMD_IBATP_TH_SET 0x46
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#define BD99955_CMD_IBATM_TH_SET 0x47
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#define BD99955_CMD_VBAT_TH_SET 0x48
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#define BD99955_CMD_THERM_TH_SET 0x49
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#define BD99955_CMD_IACP_TH_SET 0x4A
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#define BD99955_CMD_VACP_TH_SET 0x4B
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#define BD99955_CMD_VBUS_TH_SET 0x4C
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#define BD99955_CMD_VCC_TH_SET 0x4D
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#define BD99955_CMD_VSYS_TH_SET 0x4E
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#define BD99955_CMD_EXTIADP_TH_SET 0x4F
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#define BD99955_CMD_IBATP_VAL 0x50
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#define BD99955_CMD_IBATP_AVE_VAL 0x51
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#define BD99955_CMD_IBATM_VAL 0x52
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#define BD99955_CMD_IBATM_AVE_VAL 0x53
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#define BD99955_CMD_VBAT_VAL 0x54
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#define BD99955_CMD_VBAT_AVE_VAL 0x55
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#define BD99955_CMD_THERM_VAL 0x56
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#define BD99955_CMD_VTH_VAL 0x57
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#define BD99955_CMD_IACP_VAL 0x58
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#define BD99955_CMD_IACP_AVE_VAL 0x59
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#define BD99955_CMD_VACP_VAL 0x5A
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#define BD99955_CMD_VACP_AVE_VAL 0x5B
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#define BD99955_CMD_VBUS_VAL 0x5C
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#define BD99955_CMD_VBUS_AVE_VAL 0x5D
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#define BD99955_CMD_VCC_VAL 0x5E
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#define BD99955_CMD_VCC_AVE_VAL 0x5F
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#define BD99955_CMD_VSYS_VAL 0x60
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#define BD99955_CMD_VSYS_AVE_VAL 0x61
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#define BD99955_CMD_EXTIADP_VAL 0x62
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#define BD99955_CMD_EXTIADP_AVE_VAL 0x63
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#define BD99955_CMD_VACPCLPS_TH_SET 0x64
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#define BD99955_CMD_INT0_SET 0x68
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#define BD99955_CMD_INT1_SET 0x69
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#define BD99955_CMD_INT2_SET 0x6A
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#define BD99955_CMD_INT3_SET 0x6B
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#define BD99955_CMD_INT4_SET 0x6C
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#define BD99955_CMD_INT5_SET 0x6D
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#define BD99955_CMD_INT6_SET 0x6E
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#define BD99955_CMD_INT7_SET 0x6F
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#define BD99955_CMD_INT0_STATUS 0x70
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#define BD99955_CMD_INT1_STATUS 0x71
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#define BD99955_CMD_INT2_STATUS 0x72
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#define BD99955_CMD_INT3_STATUS 0x73
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#define BD99955_CMD_INT4_STATUS 0x74
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#define BD99955_CMD_INT5_STATUS 0x75
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#define BD99955_CMD_INT6_STATUS 0x76
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#define BD99955_CMD_INT7_STATUS 0x77
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#define BD99955_CMD_REG0 0x78
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#define BD99955_CMD_REG1 0x79
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#define BD99955_CMD_OTPREG0 0x7A
|
||||
#define BD99955_CMD_OTPREG1 0x7B
|
||||
#define BD99955_CMD_SMBREG 0x7C
|
||||
#define BD99955_CMD_DEBUG_MODE_SET 0x7F
|
||||
|
||||
/* Charger operation control setting 2 */
|
||||
#define BD99955_CHGOP_SET2_CHG_EN (1 << 7)
|
||||
#define BD99955_CHGOP_SET2_BATT_LEARN (1 << 8)
|
||||
|
||||
#endif /* __CROS_EC_BD99955_H */
|
||||
@@ -337,6 +337,7 @@
|
||||
#undef CONFIG_CHARGER_ADC_AMON_BMON
|
||||
|
||||
/* Compile charger-specific code for these chargers (pick at most one) */
|
||||
#undef CONFIG_CHARGER_BD99955
|
||||
#undef CONFIG_CHARGER_BQ24707A
|
||||
#undef CONFIG_CHARGER_BQ24715
|
||||
#undef CONFIG_CHARGER_BQ24725
|
||||
|
||||
Reference in New Issue
Block a user