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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /driver/battery/max17055.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-stabilize-14333.B-ish.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'driver/battery/max17055.c')
-rw-r--r--driver/battery/max17055.c692
1 files changed, 0 insertions, 692 deletions
diff --git a/driver/battery/max17055.c b/driver/battery/max17055.c
deleted file mode 100644
index bb0b941937..0000000000
--- a/driver/battery/max17055.c
+++ /dev/null
@@ -1,692 +0,0 @@
-/* Copyright 2017 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.
- *
- * Battery driver for MAX17055.
- */
-
-#include "battery.h"
-#include "console.h"
-#include "extpower.h"
-#include "hooks.h"
-#include "i2c.h"
-#include "max17055.h"
-#include "printf.h"
-#include "timer.h"
-#include "util.h"
-
-/* Console output macros */
-#define CPRINTS(format, args...) cprints(CC_CHARGER, format, ## args)
-
-/*
- * For max17055 to finish battery presence detection, this is the minimal time
- * we have to wait since the last POR. LSB = 175ms.
- */
-#define RELIABLE_BATT_DETECT_TIME 0x10
-
-/*
- * Convert the register values to the units that match
- * smart battery protocol.
- */
-
-/* Voltage reg value to mV */
-#define VOLTAGE_CONV(REG) ((REG * 5) >> 6)
-/* Current reg value to mA */
-#define CURRENT_CONV(REG) (((REG * 25) >> 4) / BATTERY_MAX17055_RSENSE)
-/* Capacity reg value to mAh */
-#define CAPACITY_CONV(REG) (REG * 5 / BATTERY_MAX17055_RSENSE)
-/* Time reg value to minute */
-#define TIME_CONV(REG) ((REG * 3) >> 5)
-/* Temperature reg value to 0.1K */
-#define TEMPERATURE_CONV(REG) (((REG * 10) >> 8) + 2731)
-/* Percentage reg value to 1% */
-#define PERCENTAGE_CONV(REG) (REG >> 8)
-/* Cycle count reg value (LSB = 1%) to absolute count (100%) */
-#define CYCLE_COUNT_CONV(REG) ((REG * 5) >> 9)
-
-/* Useful macros */
-#define MAX17055_READ_DEBUG(offset, ptr_reg) \
- do { \
- if (max17055_read(offset, ptr_reg)) { \
- CPRINTS("%s: failed to read reg %02x", \
- __func__, offset); \
- return; \
- } \
- } while (0)
-#define MAX17055_WRITE_DEBUG(offset, reg) \
- do { \
- if (max17055_write(offset, reg)) { \
- CPRINTS("%s: failed to read reg %02x", \
- __func__, offset); \
- return; \
- } \
- } while (0)
-
-static int fake_state_of_charge = -1;
-
-static int max17055_read(int offset, int *data)
-{
- return i2c_read16(I2C_PORT_BATTERY, MAX17055_ADDR_FLAGS,
- offset, data);
-}
-
-static int max17055_write(int offset, int data)
-{
- return i2c_write16(I2C_PORT_BATTERY, MAX17055_ADDR_FLAGS,
- offset, data);
-}
-
-/* Return 1 if the device id is correct. */
-static int max17055_probe(void)
-{
- int dev_id;
-
- if (max17055_read(REG_DEVICE_NAME, &dev_id))
- return 0;
- if (dev_id == MAX17055_DEVICE_ID)
- return 1;
- return 0;
-}
-
-int battery_device_name(char *device_name, int buf_size)
-{
- int dev_id;
- int rv;
-
- rv = max17055_read(REG_DEVICE_NAME, &dev_id);
- if (!rv)
- snprintf(device_name, buf_size, "0x%04x", dev_id);
-
- return rv;
-}
-
-int battery_state_of_charge_abs(int *percent)
-{
- return EC_ERROR_UNIMPLEMENTED;
-}
-
-int battery_remaining_capacity(int *capacity)
-{
- int rv;
- int reg;
-
- rv = max17055_read(REG_REMAINING_CAPACITY, &reg);
- if (!rv)
- *capacity = CAPACITY_CONV(reg);
- return rv;
-}
-
-int battery_full_charge_capacity(int *capacity)
-{
- int rv;
- int reg;
-
- rv = max17055_read(REG_FULL_CHARGE_CAPACITY, &reg);
- if (!rv)
- *capacity = CAPACITY_CONV(reg);
- return rv;
-}
-
-int battery_time_to_empty(int *minutes)
-{
- int rv;
- int reg;
-
- rv = max17055_read(REG_TIME_TO_EMPTY, &reg);
- if (!rv)
- *minutes = TIME_CONV(reg);
- return rv;
-}
-
-int battery_time_to_full(int *minutes)
-{
- int rv;
- int reg;
-
- rv = max17055_read(REG_TIME_TO_FULL, &reg);
- if (!rv)
- *minutes = TIME_CONV(reg);
- return rv;
-}
-
-int battery_cycle_count(int *count)
-{
- int rv;
- int reg;
-
- rv = max17055_read(REG_CYCLE_COUNT, &reg);
- if (!rv)
- *count = CYCLE_COUNT_CONV(reg);
- return rv;
-}
-
-int battery_design_capacity(int *capacity)
-{
- int rv;
- int reg;
-
- rv = max17055_read(REG_DESIGN_CAPACITY, &reg);
- if (!rv)
- *capacity = CAPACITY_CONV(reg);
- return rv;
-}
-
-int battery_time_at_rate(int rate, int *minutes)
-{
- return EC_ERROR_UNIMPLEMENTED;
-}
-
-int battery_device_chemistry(char *dest, int size)
-{
- strzcpy(dest, "<unkn>", size);
-
- return EC_SUCCESS;
-}
-
-int battery_serial_number(int *serial)
-{
- /* TODO(philipchen): Implement this function. */
- *serial = 0xFFFFFFFF;
- return EC_SUCCESS;
-}
-
-int battery_manufacture_date(int *year, int *month, int *day)
-{
- return EC_ERROR_UNIMPLEMENTED;
-}
-
-int battery_design_voltage(int *voltage)
-{
- *voltage = battery_get_info()->voltage_normal;
-
- return EC_SUCCESS;
-}
-
-int battery_get_mode(int *mode)
-{
- return EC_ERROR_UNIMPLEMENTED;
-}
-
-int battery_status(int *status)
-{
- int rv;
- int reg;
-
- *status = 0;
-
- rv = max17055_read(REG_FSTAT, &reg);
- if (rv)
- return rv;
- if (reg & FSTAT_FQ)
- *status |= BATTERY_FULLY_CHARGED;
-
- rv = max17055_read(REG_AVERAGE_CURRENT, &reg);
- if (rv)
- return rv;
- if (reg >> 15)
- *status |= BATTERY_DISCHARGING;
-
- return EC_SUCCESS;
-}
-
-enum battery_present battery_is_present(void)
-{
- int reg = 0;
- static uint8_t batt_pres_sure;
-
- if (max17055_read(REG_STATUS, &reg))
- return BP_NOT_SURE;
-
- if (reg & STATUS_BST)
- return BP_NO;
-
- if (!batt_pres_sure) {
- /*
- * The battery detection result is not reliable within
- * ~2.8 secs since POR.
- */
- if (!max17055_read(REG_TIMERH, &reg)) {
- /*
- * The LSB of TIMERH reg is 3.2 hrs. If the reg has a
- * nonzero value, battery detection must have been
- * settled.
- */
- if (reg) {
- batt_pres_sure = 1;
- return BP_YES;
- }
- if (!max17055_read(REG_TIMER, &reg) &&
- ((uint32_t)reg > RELIABLE_BATT_DETECT_TIME)) {
- batt_pres_sure = 1;
- return BP_YES;
- }
- }
- return BP_NOT_SURE;
- }
- return BP_YES;
-}
-
-void battery_get_params(struct batt_params *batt)
-{
- int reg = 0;
- struct batt_params batt_new = {0};
-
- /*
- * Assuming the battery is responsive as long as
- * max17055 finds battery is present.
- */
- batt_new.is_present = battery_is_present();
-
- if (batt_new.is_present == BP_YES)
- batt_new.flags |= BATT_FLAG_RESPONSIVE;
- else if (batt_new.is_present == BP_NO)
- /* Battery is not present, gauge won't report useful info. */
- goto batt_out;
-
- if (max17055_read(REG_TEMPERATURE, &reg))
- batt_new.flags |= BATT_FLAG_BAD_TEMPERATURE;
-
- batt_new.temperature = TEMPERATURE_CONV((int16_t)reg);
-
- if (max17055_read(REG_STATE_OF_CHARGE, &reg) &&
- fake_state_of_charge < 0)
- batt_new.flags |= BATT_FLAG_BAD_STATE_OF_CHARGE;
-
- batt_new.state_of_charge = fake_state_of_charge >= 0 ?
- fake_state_of_charge : PERCENTAGE_CONV(reg);
-
- if (max17055_read(REG_VOLTAGE, &reg))
- batt_new.flags |= BATT_FLAG_BAD_VOLTAGE;
-
- batt_new.voltage = VOLTAGE_CONV(reg);
-
- if (max17055_read(REG_AVERAGE_CURRENT, &reg))
- batt_new.flags |= BATT_FLAG_BAD_CURRENT;
-
- batt_new.current = CURRENT_CONV((int16_t)reg);
-
- batt_new.desired_voltage = battery_get_info()->voltage_max;
- batt_new.desired_current = BATTERY_DESIRED_CHARGING_CURRENT;
-
- if (battery_remaining_capacity(&batt_new.remaining_capacity))
- batt_new.flags |= BATT_FLAG_BAD_REMAINING_CAPACITY;
-
- if (battery_full_charge_capacity(&batt_new.full_capacity))
- batt_new.flags |= BATT_FLAG_BAD_FULL_CAPACITY;
-
- /*
- * Charging allowed if both desired voltage and current are nonzero
- * and battery isn't full (and we read them all correctly).
- */
- if (!(batt_new.flags & BATT_FLAG_BAD_STATE_OF_CHARGE) &&
- batt_new.desired_voltage &&
- batt_new.desired_current &&
- batt_new.state_of_charge < BATTERY_LEVEL_FULL)
- batt_new.flags |= BATT_FLAG_WANT_CHARGE;
-
- if (battery_status(&batt_new.status))
- batt_new.flags |= BATT_FLAG_BAD_STATUS;
-
-batt_out:
- /* Update visible battery parameters */
- memcpy(batt, &batt_new, sizeof(*batt));
-}
-
-#ifdef CONFIG_CMD_PWR_AVG
-int battery_get_avg_current(void)
-{
- /* TODO(crbug.com/752320) implement this */
- return EC_ERROR_UNIMPLEMENTED;
-}
-
-int battery_get_avg_voltage(void)
-{
- /* TODO(crbug.com/752320) implement this */
- return -EC_ERROR_UNIMPLEMENTED;
-}
-#endif /* CONFIG_CMD_PWR_AVG */
-
-/* Wait until battery is totally stable. */
-int battery_wait_for_stable(void)
-{
- /* TODO(philipchen): Implement this function. */
- return EC_SUCCESS;
-}
-
-static int max17055_poll_flag_clear(int regno, int mask, int timeout)
-{
- int reg;
-
- do {
- if (max17055_read(regno, &reg))
- return EC_ERROR_UNKNOWN;
-
- if (!(mask & reg))
- return EC_SUCCESS;
-
- msleep(10);
- timeout -= 10;
- } while (timeout > 0);
-
- return EC_ERROR_TIMEOUT;
-}
-
-static int max17055_load_ocv_table(const struct max17055_batt_profile *config)
-{
- int i;
- int reg;
- int retries = 3;
-
- /* Unlock ocv table */
- if (max17055_write(REG_LOCK1, 0x0059) ||
- max17055_write(REG_LOCK2, 0x00c4))
- return EC_ERROR_UNKNOWN;
-
- ASSERT(config->ocv_table);
-
- /* Write ocv data */
- for (i = 0; i < MAX17055_OCV_TABLE_SIZE; i++) {
- if (max17055_write(REG_OCV_TABLE_START + i,
- config->ocv_table[i]))
- return EC_ERROR_UNKNOWN;
- }
-
- /* Read and compare ocv data */
- for (i = 0; i < MAX17055_OCV_TABLE_SIZE; i++) {
- if (max17055_read(REG_OCV_TABLE_START + i, &reg) ||
- reg != config->ocv_table[i])
- return EC_ERROR_UNKNOWN;
- }
-
- while (--retries) {
- /* Lock ocv table */
- if (max17055_write(REG_LOCK1, 0x0000) ||
- max17055_write(REG_LOCK2, 0x0000))
- return EC_ERROR_UNKNOWN;
-
- /*
- * If the ocv table remains unlocked, the MAX17055 cannot
- * monitor the capacity of the battery. Therefore, it is very
- * critical that the ocv table is locked. To verify it is
- * locked, simply read back the values. However, this time,
- * all values should be read as 0x0000.
- */
- for (i = 0; i < MAX17055_OCV_TABLE_SIZE; i++) {
- reg = 0xff;
- if (max17055_read(REG_OCV_TABLE_START + i, &reg))
- return EC_ERROR_UNKNOWN;
- if (reg)
- break;
- }
- if (i == MAX17055_OCV_TABLE_SIZE)
- break;
- msleep(20);
- }
- if (!retries)
- return EC_ERROR_TIMEOUT;
-
- /*
- * Delay 180ms is to prepare the environment to load the custom
- * battery parameters. Otherwise, the initialization operation
- * has a very small probability of failure.
- */
- msleep(180);
-
- return EC_SUCCESS;
-}
-
-static int max17055_exit_hibernate(void)
-{
- /*
- * Write REG_COMMAND with 0x90 to force the firmware to stop running.
- * Write REG_HIBCFG with 0x00 to exit hibernate mode immediately.
- * Write REG_COMMAND with 0x00 to run the firmware again.
- */
- if (max17055_write(REG_COMMAND, 0x90) ||
- max17055_write(REG_HIBCFG, 0x00) ||
- max17055_write(REG_COMMAND, 0x00))
- return EC_ERROR_UNKNOWN;
-
- return EC_SUCCESS;
-}
-
-/* Configured MAX17055 with the battery parameters for full model. */
-static int max17055_load_batt_model_full(void)
-{
- int reg;
- int hib_cfg;
-
- const struct max17055_batt_profile *config;
-
- config = max17055_get_batt_profile();
-
- /* Store the original HibCFG value. */
- if (max17055_read(REG_HIBCFG, &hib_cfg))
- return EC_ERROR_UNKNOWN;
-
- /* Force exit from hibernate */
- if (max17055_exit_hibernate())
- return EC_ERROR_UNKNOWN;
-
- /* Write LearnCFG with LS 7 */
- if (max17055_write(REG_LEARNCFG, config->learn_cfg | 0x0070))
- return EC_ERROR_UNKNOWN;
-
- /*
- * Unlock ocv table access, write/compare/verify custom ocv table,
- * lock ocv table access.
- */
- if (max17055_load_ocv_table(config))
- return EC_ERROR_UNKNOWN;
-
- /* Write custom parameters */
- if (max17055_write(REG_DESIGN_CAPACITY, config->design_cap) ||
- max17055_write(REG_DQACC, config->design_cap >> 4) ||
- max17055_write(REG_DPACC, 0x0c80) ||
- max17055_write(REG_CHARGE_TERM_CURRENT, config->ichg_term) ||
- max17055_write(REG_EMPTY_VOLTAGE, config->v_empty_detect))
- return EC_ERROR_UNKNOWN;
-
- if (max17055_write(REG_RCOMP0, config->rcomp0) ||
- max17055_write(REG_TEMPCO, config->tempco) ||
- max17055_write(REG_QR_TABLE00, config->qr_table00) ||
- max17055_write(REG_QR_TABLE10, config->qr_table10))
- return EC_ERROR_UNKNOWN;
-
- /* Update required capacity registers */
- if (max17055_write(REG_REMAINING_CAPACITY, 0x0000) ||
- max17055_read(REG_VFSOC, &reg))
- return EC_ERROR_UNKNOWN;
-
- if (max17055_write(REG_VFSOC0, reg) ||
- max17055_write(REG_FULL_CHARGE_CAPACITY, config->design_cap) ||
- max17055_write(REG_FULLCAPNOM, config->design_cap))
- return EC_ERROR_UNKNOWN;
-
- /* Prepare to Load Model */
- if (max17055_write(REG_REMAINING_CAPACITY, 0x0000) ||
- max17055_write(REG_MIXCAP, config->design_cap))
- return EC_ERROR_UNKNOWN;
-
- /* Initiate model loading */
- if (max17055_read(REG_CONFIG2, &reg) ||
- max17055_write(REG_CONFIG2, reg | CONFIG2_LDMDL))
- return EC_ERROR_UNKNOWN;
-
- if (max17055_poll_flag_clear(REG_CONFIG2, CONFIG2_LDMDL, 500))
- return EC_ERROR_UNKNOWN;
-
- /* Write LearnCFG with LS 0 */
- if (max17055_write(REG_LEARNCFG, config->learn_cfg & 0xff8f) ||
- max17055_write(REG_QR_TABLE20, config->qr_table20) ||
- max17055_write(REG_QR_TABLE30, config->qr_table30))
- return EC_ERROR_UNKNOWN;
-
- /* Restore the original HibCFG value. */
- if (max17055_write(REG_HIBCFG, hib_cfg))
- return EC_ERROR_UNKNOWN;
-
- return EC_SUCCESS;
-}
-
-/*
- * Configured MAX17055 with the battery parameters for short model or ez model
- */
-static int max17055_load_batt_model_short_or_ez(void)
-{
- int hib_cfg;
- int dqacc;
- int dpacc;
-
- const struct max17055_batt_profile *config;
-
- config = max17055_get_batt_profile();
-
- if (config->is_ez_config) {
- dqacc = config->design_cap / 32;
- /* Choose the model for charge voltage > 4.275V. */
- dpacc = dqacc * 51200 / config->design_cap;
- } else {
- dqacc = config->design_cap / 16;
- dpacc = config->dpacc;
- }
-
- if (max17055_write(REG_DESIGN_CAPACITY, config->design_cap) ||
- max17055_write(REG_DQACC, dqacc) ||
- max17055_write(REG_CHARGE_TERM_CURRENT, config->ichg_term) ||
- max17055_write(REG_EMPTY_VOLTAGE, config->v_empty_detect))
- return EC_ERROR_UNKNOWN;
-
- if (!config->is_ez_config) {
- if (max17055_write(REG_LEARNCFG, config->learn_cfg))
- return EC_ERROR_UNKNOWN;
- }
-
- /* Store the original HibCFG value. */
- if (max17055_read(REG_HIBCFG, &hib_cfg))
- return EC_ERROR_UNKNOWN;
-
- /* Force exit from hibernate */
- if (max17055_exit_hibernate())
- return EC_ERROR_UNKNOWN;
-
- if (max17055_write(REG_DPACC, dpacc) ||
- max17055_write(REG_MODELCFG, (MODELCFG_REFRESH | MODELCFG_VCHG)))
- return EC_ERROR_UNKNOWN;
-
- /* Delay up to 500 ms until MODELCFG.REFRESH bit == 0. */
- if (max17055_poll_flag_clear(REG_MODELCFG, MODELCFG_REFRESH, 500))
- return EC_ERROR_UNKNOWN;
-
- if (!config->is_ez_config) {
- if (max17055_write(REG_RCOMP0, config->rcomp0) ||
- max17055_write(REG_TEMPCO, config->tempco) ||
- max17055_write(REG_QR_TABLE00, config->qr_table00) ||
- max17055_write(REG_QR_TABLE10, config->qr_table10) ||
- max17055_write(REG_QR_TABLE20, config->qr_table20) ||
- max17055_write(REG_QR_TABLE30, config->qr_table30))
- return EC_ERROR_UNKNOWN;
- }
-
- /* Restore the original HibCFG value. */
- if (max17055_write(REG_HIBCFG, hib_cfg))
- return EC_ERROR_UNKNOWN;
- return EC_SUCCESS;
-}
-
-static int max17055_load_batt_model(void)
-{
- if (IS_ENABLED(CONFIG_BATTERY_MAX17055_FULL_MODEL))
- return max17055_load_batt_model_full();
- else
- return max17055_load_batt_model_short_or_ez();
-}
-
-static void max17055_init(void)
-{
- int reg;
- int retries = 80;
-#ifdef CONFIG_BATTERY_MAX17055_ALERT
- const struct max17055_alert_profile *alert_profile =
- max17055_get_alert_profile();
-#endif
-
- if (!max17055_probe()) {
- CPRINTS("Wrong max17055 id!");
- return;
- }
-
- /*
- * Set CONFIG.TSEL to measure temperature using external thermistor.
- * Set it as early as possible because max17055 takes up to 1000ms to
- * have the first reliable external temperature reading.
- */
- MAX17055_READ_DEBUG(REG_CONFIG, &reg);
- MAX17055_WRITE_DEBUG(REG_CONFIG, (reg | CONF_TSEL));
-
- MAX17055_READ_DEBUG(REG_STATUS, &reg);
-
- /* Check for POR */
- if (STATUS_POR & reg) {
- /* Delay up to 800 ms until FSTAT.DNR bit == 0. */
- while (--retries) {
- MAX17055_READ_DEBUG(REG_FSTAT, &reg);
- if (!(FSTAT_DNR & reg))
- break;
- msleep(10);
- }
- if (!retries) {
- CPRINTS("%s: timeout waiting for FSTAT.DNR cleared",
- __func__);
- return;
- }
-
- if (max17055_load_batt_model()) {
- CPRINTS("max17055 configuration failed!");
- return;
- }
-
- /* Clear POR bit */
- MAX17055_READ_DEBUG(REG_STATUS, &reg);
- MAX17055_WRITE_DEBUG(REG_STATUS, (reg & ~STATUS_POR));
- } else {
- const struct max17055_batt_profile *config;
-
- config = max17055_get_batt_profile();
- MAX17055_READ_DEBUG(REG_DESIGN_CAPACITY, &reg);
-
- /*
- * Reload the battery model if the current running one
- * is wrong.
- */
- if (config->design_cap != reg) {
- CPRINTS("max17055 reconfig...");
- if (max17055_load_batt_model()) {
- CPRINTS("max17055 configuration failed!");
- return;
- }
- }
- }
-
-#ifdef CONFIG_BATTERY_MAX17055_ALERT
- /* Set voltage alert range */
- MAX17055_WRITE_DEBUG(REG_VALRTTH, alert_profile->v_alert_mxmn);
- /* Set temperature alert range */
- MAX17055_WRITE_DEBUG(REG_TALRTTH, alert_profile->t_alert_mxmn);
- /* Set state-of-charge alert range */
- MAX17055_WRITE_DEBUG(REG_SALRTTH, alert_profile->s_alert_mxmn);
- /* Set current alert range */
- MAX17055_WRITE_DEBUG(REG_IALRTTH, alert_profile->i_alert_mxmn);
-
- /* Disable all sticky bits; enable alert AEN */
- MAX17055_READ_DEBUG(REG_CONFIG, &reg);
- MAX17055_WRITE_DEBUG(REG_CONFIG, (reg & ~CONF_ALL_STICKY) | CONF_AEN);
-
- /* Clear alerts */
- MAX17055_READ_DEBUG(REG_STATUS, &reg);
- MAX17055_WRITE_DEBUG(REG_STATUS, reg & ~STATUS_ALL_ALRT);
-#endif
-
- CPRINTS("max17055 configuration succeeded!");
-}
-DECLARE_HOOK(HOOK_INIT, max17055_init, HOOK_PRIO_DEFAULT);