| // SPDX-License-Identifier: GPL-2.0+ |
| // |
| // max14577_charger.c - Battery charger driver for the Maxim 14577/77836 |
| // |
| // Copyright (C) 2013,2014 Samsung Electronics |
| // Krzysztof Kozlowski <krzk@kernel.org> |
| |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/power_supply.h> |
| #include <linux/mfd/max14577-private.h> |
| #include <linux/mfd/max14577.h> |
| |
| struct max14577_charger { |
| struct device *dev; |
| struct max14577 *max14577; |
| struct power_supply *charger; |
| |
| struct max14577_charger_platform_data *pdata; |
| }; |
| |
| /* |
| * Helper function for mapping values of STATUS2/CHGTYP register on max14577 |
| * and max77836 chipsets to enum maxim_muic_charger_type. |
| */ |
| static enum max14577_muic_charger_type maxim_get_charger_type( |
| enum maxim_device_type dev_type, u8 val) { |
| switch (val) { |
| case MAX14577_CHARGER_TYPE_NONE: |
| case MAX14577_CHARGER_TYPE_USB: |
| case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT: |
| case MAX14577_CHARGER_TYPE_DEDICATED_CHG: |
| case MAX14577_CHARGER_TYPE_SPECIAL_500MA: |
| case MAX14577_CHARGER_TYPE_SPECIAL_1A: |
| return val; |
| case MAX14577_CHARGER_TYPE_DEAD_BATTERY: |
| case MAX14577_CHARGER_TYPE_RESERVED: |
| if (dev_type == MAXIM_DEVICE_TYPE_MAX77836) |
| val |= 0x8; |
| return val; |
| default: |
| WARN_ONCE(1, "max14577: Unsupported chgtyp register value 0x%02x", val); |
| return val; |
| } |
| } |
| |
| static int max14577_get_charger_state(struct max14577_charger *chg, int *val) |
| { |
| struct regmap *rmap = chg->max14577->regmap; |
| int ret; |
| u8 reg_data; |
| |
| /* |
| * Charging occurs only if: |
| * - CHGCTRL2/MBCHOSTEN == 1 |
| * - STATUS2/CGMBC == 1 |
| * |
| * TODO: |
| * - handle FULL after Top-off timer (EOC register may be off |
| * and the charger won't be charging although MBCHOSTEN is on) |
| * - handle properly dead-battery charging (respect timer) |
| * - handle timers (fast-charge and prequal) /MBCCHGERR/ |
| */ |
| ret = max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL2, ®_data); |
| if (ret < 0) |
| goto out; |
| |
| if ((reg_data & CHGCTRL2_MBCHOSTEN_MASK) == 0) { |
| *val = POWER_SUPPLY_STATUS_DISCHARGING; |
| goto out; |
| } |
| |
| ret = max14577_read_reg(rmap, MAX14577_CHG_REG_STATUS3, ®_data); |
| if (ret < 0) |
| goto out; |
| |
| if (reg_data & STATUS3_CGMBC_MASK) { |
| /* Charger or USB-cable is connected */ |
| if (reg_data & STATUS3_EOC_MASK) |
| *val = POWER_SUPPLY_STATUS_FULL; |
| else |
| *val = POWER_SUPPLY_STATUS_CHARGING; |
| goto out; |
| } |
| |
| *val = POWER_SUPPLY_STATUS_DISCHARGING; |
| |
| out: |
| return ret; |
| } |
| |
| /* |
| * Supported charge types: |
| * - POWER_SUPPLY_CHARGE_TYPE_NONE |
| * - POWER_SUPPLY_CHARGE_TYPE_FAST |
| */ |
| static int max14577_get_charge_type(struct max14577_charger *chg, int *val) |
| { |
| int ret, charging; |
| |
| /* |
| * TODO: CHARGE_TYPE_TRICKLE (VCHGR_RC or EOC)? |
| * As spec says: |
| * [after reaching EOC interrupt] |
| * "When the battery is fully charged, the 30-minute (typ) |
| * top-off timer starts. The device continues to trickle |
| * charge the battery until the top-off timer runs out." |
| */ |
| ret = max14577_get_charger_state(chg, &charging); |
| if (ret < 0) |
| return ret; |
| |
| if (charging == POWER_SUPPLY_STATUS_CHARGING) |
| *val = POWER_SUPPLY_CHARGE_TYPE_FAST; |
| else |
| *val = POWER_SUPPLY_CHARGE_TYPE_NONE; |
| |
| return 0; |
| } |
| |
| static int max14577_get_online(struct max14577_charger *chg, int *val) |
| { |
| struct regmap *rmap = chg->max14577->regmap; |
| u8 reg_data; |
| int ret; |
| enum max14577_muic_charger_type chg_type; |
| |
| ret = max14577_read_reg(rmap, MAX14577_MUIC_REG_STATUS2, ®_data); |
| if (ret < 0) |
| return ret; |
| |
| reg_data = ((reg_data & STATUS2_CHGTYP_MASK) >> STATUS2_CHGTYP_SHIFT); |
| chg_type = maxim_get_charger_type(chg->max14577->dev_type, reg_data); |
| switch (chg_type) { |
| case MAX14577_CHARGER_TYPE_USB: |
| case MAX14577_CHARGER_TYPE_DEDICATED_CHG: |
| case MAX14577_CHARGER_TYPE_SPECIAL_500MA: |
| case MAX14577_CHARGER_TYPE_SPECIAL_1A: |
| case MAX14577_CHARGER_TYPE_DEAD_BATTERY: |
| case MAX77836_CHARGER_TYPE_SPECIAL_BIAS: |
| *val = 1; |
| break; |
| case MAX14577_CHARGER_TYPE_NONE: |
| case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT: |
| case MAX14577_CHARGER_TYPE_RESERVED: |
| case MAX77836_CHARGER_TYPE_RESERVED: |
| default: |
| *val = 0; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Supported health statuses: |
| * - POWER_SUPPLY_HEALTH_DEAD |
| * - POWER_SUPPLY_HEALTH_OVERVOLTAGE |
| * - POWER_SUPPLY_HEALTH_GOOD |
| */ |
| static int max14577_get_battery_health(struct max14577_charger *chg, int *val) |
| { |
| struct regmap *rmap = chg->max14577->regmap; |
| int ret; |
| u8 reg_data; |
| enum max14577_muic_charger_type chg_type; |
| |
| ret = max14577_read_reg(rmap, MAX14577_MUIC_REG_STATUS2, ®_data); |
| if (ret < 0) |
| goto out; |
| |
| reg_data = ((reg_data & STATUS2_CHGTYP_MASK) >> STATUS2_CHGTYP_SHIFT); |
| chg_type = maxim_get_charger_type(chg->max14577->dev_type, reg_data); |
| if (chg_type == MAX14577_CHARGER_TYPE_DEAD_BATTERY) { |
| *val = POWER_SUPPLY_HEALTH_DEAD; |
| goto out; |
| } |
| |
| ret = max14577_read_reg(rmap, MAX14577_CHG_REG_STATUS3, ®_data); |
| if (ret < 0) |
| goto out; |
| |
| if (reg_data & STATUS3_OVP_MASK) { |
| *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE; |
| goto out; |
| } |
| |
| /* Not dead, not overvoltage */ |
| *val = POWER_SUPPLY_HEALTH_GOOD; |
| |
| out: |
| return ret; |
| } |
| |
| /* |
| * Always returns 1. |
| * The max14577 chip doesn't report any status of battery presence. |
| * Lets assume that it will always be used with some battery. |
| */ |
| static int max14577_get_present(struct max14577_charger *chg, int *val) |
| { |
| *val = 1; |
| |
| return 0; |
| } |
| |
| static int max14577_set_fast_charge_timer(struct max14577_charger *chg, |
| unsigned long hours) |
| { |
| u8 reg_data; |
| |
| switch (hours) { |
| case 5 ... 7: |
| reg_data = hours - 3; |
| break; |
| case 0: |
| /* Disable */ |
| reg_data = 0x7; |
| break; |
| default: |
| dev_err(chg->dev, "Wrong value for Fast-Charge Timer: %lu\n", |
| hours); |
| return -EINVAL; |
| } |
| reg_data <<= CHGCTRL1_TCHW_SHIFT; |
| |
| return max14577_update_reg(chg->max14577->regmap, |
| MAX14577_REG_CHGCTRL1, CHGCTRL1_TCHW_MASK, reg_data); |
| } |
| |
| static int max14577_init_constant_voltage(struct max14577_charger *chg, |
| unsigned int uvolt) |
| { |
| u8 reg_data; |
| |
| if (uvolt < MAXIM_CHARGER_CONSTANT_VOLTAGE_MIN || |
| uvolt > MAXIM_CHARGER_CONSTANT_VOLTAGE_MAX) |
| return -EINVAL; |
| |
| if (uvolt == 4200000) |
| reg_data = 0x0; |
| else if (uvolt == MAXIM_CHARGER_CONSTANT_VOLTAGE_MAX) |
| reg_data = 0x1f; |
| else if (uvolt <= 4280000) { |
| unsigned int val = uvolt; |
| |
| val -= MAXIM_CHARGER_CONSTANT_VOLTAGE_MIN; |
| val /= MAXIM_CHARGER_CONSTANT_VOLTAGE_STEP; |
| if (uvolt <= 4180000) |
| reg_data = 0x1 + val; |
| else |
| reg_data = val; /* Fix for gap between 4.18V and 4.22V */ |
| } else |
| return -EINVAL; |
| |
| reg_data <<= CHGCTRL3_MBCCVWRC_SHIFT; |
| |
| return max14577_write_reg(chg->max14577->regmap, |
| MAX14577_CHG_REG_CHG_CTRL3, reg_data); |
| } |
| |
| static int max14577_init_eoc(struct max14577_charger *chg, |
| unsigned int uamp) |
| { |
| unsigned int current_bits; |
| u8 reg_data; |
| |
| switch (chg->max14577->dev_type) { |
| case MAXIM_DEVICE_TYPE_MAX77836: |
| if (uamp < 5000) |
| return -EINVAL; /* Requested current is too low */ |
| |
| if (uamp >= 7500 && uamp < 10000) |
| current_bits = 0x0; |
| else if (uamp <= 50000) { |
| /* <5000, 7499> and <10000, 50000> */ |
| current_bits = uamp / 5000; |
| } else { |
| uamp = min(uamp, 100000U) - 50000U; |
| current_bits = 0xa + uamp / 10000; |
| } |
| break; |
| |
| case MAXIM_DEVICE_TYPE_MAX14577: |
| default: |
| if (uamp < MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN) |
| return -EINVAL; /* Requested current is too low */ |
| |
| uamp = min(uamp, MAX14577_CHARGER_EOC_CURRENT_LIMIT_MAX); |
| uamp -= MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN; |
| current_bits = uamp / MAX14577_CHARGER_EOC_CURRENT_LIMIT_STEP; |
| break; |
| } |
| |
| reg_data = current_bits << CHGCTRL5_EOCS_SHIFT; |
| |
| return max14577_update_reg(chg->max14577->regmap, |
| MAX14577_CHG_REG_CHG_CTRL5, CHGCTRL5_EOCS_MASK, |
| reg_data); |
| } |
| |
| static int max14577_init_fast_charge(struct max14577_charger *chg, |
| unsigned int uamp) |
| { |
| u8 reg_data; |
| int ret; |
| const struct maxim_charger_current *limits = |
| &maxim_charger_currents[chg->max14577->dev_type]; |
| |
| ret = maxim_charger_calc_reg_current(limits, uamp, uamp, ®_data); |
| if (ret) { |
| dev_err(chg->dev, "Wrong value for fast charge: %u\n", uamp); |
| return ret; |
| } |
| |
| return max14577_update_reg(chg->max14577->regmap, |
| MAX14577_CHG_REG_CHG_CTRL4, |
| CHGCTRL4_MBCICHWRCL_MASK | CHGCTRL4_MBCICHWRCH_MASK, |
| reg_data); |
| } |
| |
| /* |
| * Sets charger registers to proper and safe default values. |
| * Some of these values are equal to defaults in MAX14577E |
| * data sheet but there are minor differences. |
| */ |
| static int max14577_charger_reg_init(struct max14577_charger *chg) |
| { |
| struct regmap *rmap = chg->max14577->regmap; |
| u8 reg_data; |
| int ret; |
| |
| /* |
| * Charger-Type Manual Detection, default off (set CHGTYPMAN to 0) |
| * Charger-Detection Enable, default on (set CHGDETEN to 1) |
| * Combined mask of CHGDETEN and CHGTYPMAN will zero the CHGTYPMAN bit |
| */ |
| reg_data = 0x1 << CDETCTRL1_CHGDETEN_SHIFT; |
| max14577_update_reg(rmap, MAX14577_REG_CDETCTRL1, |
| CDETCTRL1_CHGDETEN_MASK | CDETCTRL1_CHGTYPMAN_MASK, |
| reg_data); |
| |
| /* |
| * Wall-Adapter Rapid Charge, default on |
| * Battery-Charger, default on |
| */ |
| reg_data = 0x1 << CHGCTRL2_VCHGR_RC_SHIFT; |
| reg_data |= 0x1 << CHGCTRL2_MBCHOSTEN_SHIFT; |
| max14577_write_reg(rmap, MAX14577_REG_CHGCTRL2, reg_data); |
| |
| /* Auto Charging Stop, default off */ |
| reg_data = 0x0 << CHGCTRL6_AUTOSTOP_SHIFT; |
| max14577_write_reg(rmap, MAX14577_REG_CHGCTRL6, reg_data); |
| |
| ret = max14577_init_constant_voltage(chg, chg->pdata->constant_uvolt); |
| if (ret) |
| return ret; |
| |
| ret = max14577_init_eoc(chg, chg->pdata->eoc_uamp); |
| if (ret) |
| return ret; |
| |
| ret = max14577_init_fast_charge(chg, chg->pdata->fast_charge_uamp); |
| if (ret) |
| return ret; |
| |
| ret = max14577_set_fast_charge_timer(chg, |
| MAXIM_CHARGER_FAST_CHARGE_TIMER_DEFAULT); |
| if (ret) |
| return ret; |
| |
| /* Initialize Overvoltage-Protection Threshold */ |
| switch (chg->pdata->ovp_uvolt) { |
| case 7500000: |
| reg_data = 0x0; |
| break; |
| case 6000000: |
| case 6500000: |
| case 7000000: |
| reg_data = 0x1 + (chg->pdata->ovp_uvolt - 6000000) / 500000; |
| break; |
| default: |
| dev_err(chg->dev, "Wrong value for OVP: %u\n", |
| chg->pdata->ovp_uvolt); |
| return -EINVAL; |
| } |
| reg_data <<= CHGCTRL7_OTPCGHCVS_SHIFT; |
| max14577_write_reg(rmap, MAX14577_REG_CHGCTRL7, reg_data); |
| |
| return 0; |
| } |
| |
| /* Support property from charger */ |
| static enum power_supply_property max14577_charger_props[] = { |
| POWER_SUPPLY_PROP_STATUS, |
| POWER_SUPPLY_PROP_CHARGE_TYPE, |
| POWER_SUPPLY_PROP_HEALTH, |
| POWER_SUPPLY_PROP_PRESENT, |
| POWER_SUPPLY_PROP_ONLINE, |
| POWER_SUPPLY_PROP_MODEL_NAME, |
| POWER_SUPPLY_PROP_MANUFACTURER, |
| }; |
| |
| static const char * const model_names[] = { |
| [MAXIM_DEVICE_TYPE_UNKNOWN] = "MAX14577-like", |
| [MAXIM_DEVICE_TYPE_MAX14577] = "MAX14577", |
| [MAXIM_DEVICE_TYPE_MAX77836] = "MAX77836", |
| }; |
| static const char *manufacturer = "Maxim Integrated"; |
| |
| static int max14577_charger_get_property(struct power_supply *psy, |
| enum power_supply_property psp, |
| union power_supply_propval *val) |
| { |
| struct max14577_charger *chg = power_supply_get_drvdata(psy); |
| int ret = 0; |
| |
| switch (psp) { |
| case POWER_SUPPLY_PROP_STATUS: |
| ret = max14577_get_charger_state(chg, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_CHARGE_TYPE: |
| ret = max14577_get_charge_type(chg, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_HEALTH: |
| ret = max14577_get_battery_health(chg, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_PRESENT: |
| ret = max14577_get_present(chg, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_ONLINE: |
| ret = max14577_get_online(chg, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_MODEL_NAME: |
| BUILD_BUG_ON(ARRAY_SIZE(model_names) != MAXIM_DEVICE_TYPE_NUM); |
| val->strval = model_names[chg->max14577->dev_type]; |
| break; |
| case POWER_SUPPLY_PROP_MANUFACTURER: |
| val->strval = manufacturer; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static const struct power_supply_desc max14577_charger_desc = { |
| .name = "max14577-charger", |
| .type = POWER_SUPPLY_TYPE_BATTERY, |
| .properties = max14577_charger_props, |
| .num_properties = ARRAY_SIZE(max14577_charger_props), |
| .get_property = max14577_charger_get_property, |
| }; |
| |
| #ifdef CONFIG_OF |
| static struct max14577_charger_platform_data *max14577_charger_dt_init( |
| struct platform_device *pdev) |
| { |
| struct max14577_charger_platform_data *pdata; |
| struct device_node *np = pdev->dev.of_node; |
| int ret; |
| |
| if (!np) { |
| dev_err(&pdev->dev, "No charger OF node\n"); |
| return ERR_PTR(-EINVAL); |
| } |
| |
| pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| if (!pdata) |
| return ERR_PTR(-ENOMEM); |
| |
| ret = of_property_read_u32(np, "maxim,constant-uvolt", |
| &pdata->constant_uvolt); |
| if (ret) { |
| dev_err(&pdev->dev, "Cannot parse maxim,constant-uvolt field from DT\n"); |
| return ERR_PTR(ret); |
| } |
| |
| ret = of_property_read_u32(np, "maxim,fast-charge-uamp", |
| &pdata->fast_charge_uamp); |
| if (ret) { |
| dev_err(&pdev->dev, "Cannot parse maxim,fast-charge-uamp field from DT\n"); |
| return ERR_PTR(ret); |
| } |
| |
| ret = of_property_read_u32(np, "maxim,eoc-uamp", &pdata->eoc_uamp); |
| if (ret) { |
| dev_err(&pdev->dev, "Cannot parse maxim,eoc-uamp field from DT\n"); |
| return ERR_PTR(ret); |
| } |
| |
| ret = of_property_read_u32(np, "maxim,ovp-uvolt", &pdata->ovp_uvolt); |
| if (ret) { |
| dev_err(&pdev->dev, "Cannot parse maxim,ovp-uvolt field from DT\n"); |
| return ERR_PTR(ret); |
| } |
| |
| return pdata; |
| } |
| #else /* CONFIG_OF */ |
| static struct max14577_charger_platform_data *max14577_charger_dt_init( |
| struct platform_device *pdev) |
| { |
| return NULL; |
| } |
| #endif /* CONFIG_OF */ |
| |
| static ssize_t show_fast_charge_timer(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct max14577_charger *chg = dev_get_drvdata(dev); |
| u8 reg_data; |
| int ret; |
| unsigned int val; |
| |
| ret = max14577_read_reg(chg->max14577->regmap, MAX14577_REG_CHGCTRL1, |
| ®_data); |
| if (ret) |
| return ret; |
| |
| reg_data &= CHGCTRL1_TCHW_MASK; |
| reg_data >>= CHGCTRL1_TCHW_SHIFT; |
| switch (reg_data) { |
| case 0x2 ... 0x4: |
| val = reg_data + 3; |
| break; |
| case 0x7: |
| val = 0; |
| break; |
| default: |
| val = 5; |
| break; |
| } |
| |
| return sysfs_emit(buf, "%u\n", val); |
| } |
| |
| static ssize_t store_fast_charge_timer(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct max14577_charger *chg = dev_get_drvdata(dev); |
| unsigned long val; |
| int ret; |
| |
| ret = kstrtoul(buf, 10, &val); |
| if (ret) |
| return ret; |
| |
| ret = max14577_set_fast_charge_timer(chg, val); |
| if (ret) |
| return ret; |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(fast_charge_timer, S_IRUGO | S_IWUSR, |
| show_fast_charge_timer, store_fast_charge_timer); |
| |
| static int max14577_charger_probe(struct platform_device *pdev) |
| { |
| struct max14577_charger *chg; |
| struct power_supply_config psy_cfg = {}; |
| struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent); |
| int ret; |
| |
| chg = devm_kzalloc(&pdev->dev, sizeof(*chg), GFP_KERNEL); |
| if (!chg) |
| return -ENOMEM; |
| |
| platform_set_drvdata(pdev, chg); |
| chg->dev = &pdev->dev; |
| chg->max14577 = max14577; |
| |
| chg->pdata = max14577_charger_dt_init(pdev); |
| if (IS_ERR_OR_NULL(chg->pdata)) |
| return PTR_ERR(chg->pdata); |
| |
| ret = max14577_charger_reg_init(chg); |
| if (ret) |
| return ret; |
| |
| ret = device_create_file(&pdev->dev, &dev_attr_fast_charge_timer); |
| if (ret) { |
| dev_err(&pdev->dev, "failed: create sysfs entry\n"); |
| return ret; |
| } |
| |
| psy_cfg.drv_data = chg; |
| chg->charger = power_supply_register(&pdev->dev, &max14577_charger_desc, |
| &psy_cfg); |
| if (IS_ERR(chg->charger)) { |
| dev_err(&pdev->dev, "failed: power supply register\n"); |
| ret = PTR_ERR(chg->charger); |
| goto err; |
| } |
| |
| /* Check for valid values for charger */ |
| BUILD_BUG_ON(MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN + |
| MAX14577_CHARGER_EOC_CURRENT_LIMIT_STEP * 0xf != |
| MAX14577_CHARGER_EOC_CURRENT_LIMIT_MAX); |
| return 0; |
| |
| err: |
| device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer); |
| |
| return ret; |
| } |
| |
| static int max14577_charger_remove(struct platform_device *pdev) |
| { |
| struct max14577_charger *chg = platform_get_drvdata(pdev); |
| |
| device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer); |
| power_supply_unregister(chg->charger); |
| |
| return 0; |
| } |
| |
| static const struct platform_device_id max14577_charger_id[] = { |
| { "max14577-charger", MAXIM_DEVICE_TYPE_MAX14577, }, |
| { "max77836-charger", MAXIM_DEVICE_TYPE_MAX77836, }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(platform, max14577_charger_id); |
| |
| static const struct of_device_id of_max14577_charger_dt_match[] = { |
| { .compatible = "maxim,max14577-charger", |
| .data = (void *)MAXIM_DEVICE_TYPE_MAX14577, }, |
| { .compatible = "maxim,max77836-charger", |
| .data = (void *)MAXIM_DEVICE_TYPE_MAX77836, }, |
| { }, |
| }; |
| MODULE_DEVICE_TABLE(of, of_max14577_charger_dt_match); |
| |
| static struct platform_driver max14577_charger_driver = { |
| .driver = { |
| .name = "max14577-charger", |
| .of_match_table = of_max14577_charger_dt_match, |
| }, |
| .probe = max14577_charger_probe, |
| .remove = max14577_charger_remove, |
| .id_table = max14577_charger_id, |
| }; |
| module_platform_driver(max14577_charger_driver); |
| |
| MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>"); |
| MODULE_DESCRIPTION("Maxim 14577/77836 charger driver"); |
| MODULE_LICENSE("GPL"); |