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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Battery driver for Marvell 88PM860x PMIC4 *5 * Copyright (c) 2012 Marvell International Ltd.6 * Author: Jett Zhou <jtzhou@marvell.com>7 * Haojian Zhuang <haojian.zhuang@marvell.com>8 */9 10#include <linux/kernel.h>11#include <linux/module.h>12#include <linux/platform_device.h>13#include <linux/slab.h>14#include <linux/power_supply.h>15#include <linux/mfd/88pm860x.h>16#include <linux/delay.h>17#include <linux/uaccess.h>18#include <asm/div64.h>19 20/* bit definitions of Status Query Interface 2 */21#define STATUS2_CHG (1 << 2)22 23/* bit definitions of Reset Out Register */24#define RESET_SW_PD (1 << 7)25 26/* bit definitions of PreReg 1 */27#define PREREG1_90MA (0x0)28#define PREREG1_180MA (0x1)29#define PREREG1_450MA (0x4)30#define PREREG1_540MA (0x5)31#define PREREG1_1350MA (0xE)32#define PREREG1_VSYS_4_5V (3 << 4)33 34/* bit definitions of Charger Control 1 Register */35#define CC1_MODE_OFF (0)36#define CC1_MODE_PRECHARGE (1)37#define CC1_MODE_FASTCHARGE (2)38#define CC1_MODE_PULSECHARGE (3)39#define CC1_ITERM_20MA (0 << 2)40#define CC1_ITERM_60MA (2 << 2)41#define CC1_VFCHG_4_2V (9 << 4)42 43/* bit definitions of Charger Control 2 Register */44#define CC2_ICHG_100MA (0x1)45#define CC2_ICHG_500MA (0x9)46#define CC2_ICHG_1000MA (0x13)47 48/* bit definitions of Charger Control 3 Register */49#define CC3_180MIN_TIMEOUT (0x6 << 4)50#define CC3_270MIN_TIMEOUT (0x7 << 4)51#define CC3_360MIN_TIMEOUT (0xA << 4)52#define CC3_DISABLE_TIMEOUT (0xF << 4)53 54/* bit definitions of Charger Control 4 Register */55#define CC4_IPRE_40MA (7)56#define CC4_VPCHG_3_2V (3 << 4)57#define CC4_IFCHG_MON_EN (1 << 6)58#define CC4_BTEMP_MON_EN (1 << 7)59 60/* bit definitions of Charger Control 6 Register */61#define CC6_BAT_OV_EN (1 << 2)62#define CC6_BAT_UV_EN (1 << 3)63#define CC6_UV_VBAT_SET (0x3 << 6) /* 2.8v */64 65/* bit definitions of Charger Control 7 Register */66#define CC7_BAT_REM_EN (1 << 3)67#define CC7_IFSM_EN (1 << 7)68 69/* bit definitions of Measurement Enable 1 Register */70#define MEAS1_VBAT (1 << 0)71 72/* bit definitions of Measurement Enable 3 Register */73#define MEAS3_IBAT_EN (1 << 0)74#define MEAS3_CC_EN (1 << 2)75 76#define FSM_INIT 077#define FSM_DISCHARGE 178#define FSM_PRECHARGE 279#define FSM_FASTCHARGE 380 81#define PRECHARGE_THRESHOLD 310082#define POWEROFF_THRESHOLD 340083#define CHARGE_THRESHOLD 400084#define DISCHARGE_THRESHOLD 418085 86/* over-temperature on PM8606 setting */87#define OVER_TEMP_FLAG (1 << 6)88#define OVTEMP_AUTORECOVER (1 << 3)89 90/* over-voltage protect on vchg setting mv */91#define VCHG_NORMAL_LOW 420092#define VCHG_NORMAL_CHECK 580093#define VCHG_NORMAL_HIGH 600094#define VCHG_OVP_LOW 550095 96struct pm860x_charger_info {97 struct pm860x_chip *chip;98 struct i2c_client *i2c;99 struct i2c_client *i2c_8606;100 struct device *dev;101 102 struct power_supply *usb;103 struct mutex lock;104 int irq_nums;105 int irq[7];106 unsigned state:3; /* fsm state */107 unsigned online:1; /* usb charger */108 unsigned present:1; /* battery present */109 unsigned allowed:1;110};111 112static char *pm860x_supplied_to[] = {113 "battery-monitor",114};115 116static int measure_vchg(struct pm860x_charger_info *info, int *data)117{118 unsigned char buf[2];119 int ret = 0;120 121 ret = pm860x_bulk_read(info->i2c, PM8607_VCHG_MEAS1, 2, buf);122 if (ret < 0)123 return ret;124 125 *data = ((buf[0] & 0xff) << 4) | (buf[1] & 0x0f);126 /* V_BATT_MEAS(mV) = value * 5 * 1.8 * 1000 / (2^12) */127 *data = ((*data & 0xfff) * 9 * 125) >> 9;128 129 dev_dbg(info->dev, "%s, vchg: %d mv\n", __func__, *data);130 131 return ret;132}133 134static void set_vchg_threshold(struct pm860x_charger_info *info,135 int min, int max)136{137 int data;138 139 /* (tmp << 8) * / 5 / 1800 */140 if (min <= 0)141 data = 0;142 else143 data = (min << 5) / 1125;144 pm860x_reg_write(info->i2c, PM8607_VCHG_LOWTH, data);145 dev_dbg(info->dev, "VCHG_LOWTH:%dmv, 0x%x\n", min, data);146 147 if (max <= 0)148 data = 0xff;149 else150 data = (max << 5) / 1125;151 pm860x_reg_write(info->i2c, PM8607_VCHG_HIGHTH, data);152 dev_dbg(info->dev, "VCHG_HIGHTH:%dmv, 0x%x\n", max, data);153 154}155 156static void set_vbatt_threshold(struct pm860x_charger_info *info,157 int min, int max)158{159 int data;160 161 /* (tmp << 8) * 3 / 1800 */162 if (min <= 0)163 data = 0;164 else165 data = (min << 5) / 675;166 pm860x_reg_write(info->i2c, PM8607_VBAT_LOWTH, data);167 dev_dbg(info->dev, "VBAT Min:%dmv, LOWTH:0x%x\n", min, data);168 169 if (max <= 0)170 data = 0xff;171 else172 data = (max << 5) / 675;173 pm860x_reg_write(info->i2c, PM8607_VBAT_HIGHTH, data);174 dev_dbg(info->dev, "VBAT Max:%dmv, HIGHTH:0x%x\n", max, data);175 176 return;177}178 179static int start_precharge(struct pm860x_charger_info *info)180{181 int ret;182 183 dev_dbg(info->dev, "Start Pre-charging!\n");184 set_vbatt_threshold(info, 0, 0);185 186 ret = pm860x_reg_write(info->i2c_8606, PM8606_PREREGULATORA,187 PREREG1_1350MA | PREREG1_VSYS_4_5V);188 if (ret < 0)189 goto out;190 /* stop charging */191 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3,192 CC1_MODE_OFF);193 if (ret < 0)194 goto out;195 /* set 270 minutes timeout */196 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL3, (0xf << 4),197 CC3_270MIN_TIMEOUT);198 if (ret < 0)199 goto out;200 /* set precharge current, termination voltage, IBAT & TBAT monitor */201 ret = pm860x_reg_write(info->i2c, PM8607_CHG_CTRL4,202 CC4_IPRE_40MA | CC4_VPCHG_3_2V |203 CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN);204 if (ret < 0)205 goto out;206 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL7,207 CC7_BAT_REM_EN | CC7_IFSM_EN,208 CC7_BAT_REM_EN | CC7_IFSM_EN);209 if (ret < 0)210 goto out;211 /* trigger precharge */212 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3,213 CC1_MODE_PRECHARGE);214out:215 return ret;216}217 218static int start_fastcharge(struct pm860x_charger_info *info)219{220 int ret;221 222 dev_dbg(info->dev, "Start Fast-charging!\n");223 224 /* set fastcharge termination current & voltage, disable charging */225 ret = pm860x_reg_write(info->i2c, PM8607_CHG_CTRL1,226 CC1_MODE_OFF | CC1_ITERM_60MA |227 CC1_VFCHG_4_2V);228 if (ret < 0)229 goto out;230 ret = pm860x_reg_write(info->i2c_8606, PM8606_PREREGULATORA,231 PREREG1_540MA | PREREG1_VSYS_4_5V);232 if (ret < 0)233 goto out;234 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL2, 0x1f,235 CC2_ICHG_500MA);236 if (ret < 0)237 goto out;238 /* set 270 minutes timeout */239 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL3, (0xf << 4),240 CC3_270MIN_TIMEOUT);241 if (ret < 0)242 goto out;243 /* set IBAT & TBAT monitor */244 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL4,245 CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN,246 CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN);247 if (ret < 0)248 goto out;249 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL6,250 CC6_BAT_OV_EN | CC6_BAT_UV_EN |251 CC6_UV_VBAT_SET,252 CC6_BAT_OV_EN | CC6_BAT_UV_EN |253 CC6_UV_VBAT_SET);254 if (ret < 0)255 goto out;256 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL7,257 CC7_BAT_REM_EN | CC7_IFSM_EN,258 CC7_BAT_REM_EN | CC7_IFSM_EN);259 if (ret < 0)260 goto out;261 /* launch fast-charge */262 ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3,263 CC1_MODE_FASTCHARGE);264 /* vchg threshold setting */265 set_vchg_threshold(info, VCHG_NORMAL_LOW, VCHG_NORMAL_HIGH);266out:267 return ret;268}269 270static void stop_charge(struct pm860x_charger_info *info, int vbatt)271{272 dev_dbg(info->dev, "Stop charging!\n");273 pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, CC1_MODE_OFF);274 if (vbatt > CHARGE_THRESHOLD && info->online)275 set_vbatt_threshold(info, CHARGE_THRESHOLD, 0);276}277 278static void power_off_notification(struct pm860x_charger_info *info)279{280 dev_dbg(info->dev, "Power-off notification!\n");281}282 283static int set_charging_fsm(struct pm860x_charger_info *info)284{285 struct power_supply *psy;286 union power_supply_propval data;287 unsigned char fsm_state[][16] = { "init", "discharge", "precharge",288 "fastcharge",289 };290 int ret;291 int vbatt;292 293 psy = power_supply_get_by_name(pm860x_supplied_to[0]);294 if (!psy)295 return -EINVAL;296 ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW,297 &data);298 if (ret) {299 power_supply_put(psy);300 return ret;301 }302 vbatt = data.intval / 1000;303 304 ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_PRESENT, &data);305 if (ret) {306 power_supply_put(psy);307 return ret;308 }309 power_supply_put(psy);310 311 mutex_lock(&info->lock);312 info->present = data.intval;313 314 dev_dbg(info->dev, "Entering FSM:%s, Charger:%s, Battery:%s, "315 "Allowed:%d\n",316 &fsm_state[info->state][0],317 (info->online) ? "online" : "N/A",318 (info->present) ? "present" : "N/A", info->allowed);319 dev_dbg(info->dev, "set_charging_fsm:vbatt:%d(mV)\n", vbatt);320 321 switch (info->state) {322 case FSM_INIT:323 if (info->online && info->present && info->allowed) {324 if (vbatt < PRECHARGE_THRESHOLD) {325 info->state = FSM_PRECHARGE;326 start_precharge(info);327 } else if (vbatt > DISCHARGE_THRESHOLD) {328 info->state = FSM_DISCHARGE;329 stop_charge(info, vbatt);330 } else if (vbatt < DISCHARGE_THRESHOLD) {331 info->state = FSM_FASTCHARGE;332 start_fastcharge(info);333 }334 } else {335 if (vbatt < POWEROFF_THRESHOLD) {336 power_off_notification(info);337 } else {338 info->state = FSM_DISCHARGE;339 stop_charge(info, vbatt);340 }341 }342 break;343 case FSM_PRECHARGE:344 if (info->online && info->present && info->allowed) {345 if (vbatt > PRECHARGE_THRESHOLD) {346 info->state = FSM_FASTCHARGE;347 start_fastcharge(info);348 }349 } else {350 info->state = FSM_DISCHARGE;351 stop_charge(info, vbatt);352 }353 break;354 case FSM_FASTCHARGE:355 if (info->online && info->present && info->allowed) {356 if (vbatt < PRECHARGE_THRESHOLD) {357 info->state = FSM_PRECHARGE;358 start_precharge(info);359 }360 } else {361 info->state = FSM_DISCHARGE;362 stop_charge(info, vbatt);363 }364 break;365 case FSM_DISCHARGE:366 if (info->online && info->present && info->allowed) {367 if (vbatt < PRECHARGE_THRESHOLD) {368 info->state = FSM_PRECHARGE;369 start_precharge(info);370 } else if (vbatt < DISCHARGE_THRESHOLD) {371 info->state = FSM_FASTCHARGE;372 start_fastcharge(info);373 }374 } else {375 if (vbatt < POWEROFF_THRESHOLD)376 power_off_notification(info);377 else if (vbatt > CHARGE_THRESHOLD && info->online)378 set_vbatt_threshold(info, CHARGE_THRESHOLD, 0);379 }380 break;381 default:382 dev_warn(info->dev, "FSM meets wrong state:%d\n",383 info->state);384 break;385 }386 dev_dbg(info->dev,387 "Out FSM:%s, Charger:%s, Battery:%s, Allowed:%d\n",388 &fsm_state[info->state][0],389 (info->online) ? "online" : "N/A",390 (info->present) ? "present" : "N/A", info->allowed);391 mutex_unlock(&info->lock);392 393 return 0;394}395 396static irqreturn_t pm860x_charger_handler(int irq, void *data)397{398 struct pm860x_charger_info *info = data;399 int ret;400 401 mutex_lock(&info->lock);402 ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2);403 if (ret < 0) {404 mutex_unlock(&info->lock);405 goto out;406 }407 if (ret & STATUS2_CHG) {408 info->online = 1;409 info->allowed = 1;410 } else {411 info->online = 0;412 info->allowed = 0;413 }414 mutex_unlock(&info->lock);415 dev_dbg(info->dev, "%s, Charger:%s, Allowed:%d\n", __func__,416 (info->online) ? "online" : "N/A", info->allowed);417 418 set_charging_fsm(info);419 420 power_supply_changed(info->usb);421out:422 return IRQ_HANDLED;423}424 425static irqreturn_t pm860x_temp_handler(int irq, void *data)426{427 struct power_supply *psy;428 struct pm860x_charger_info *info = data;429 union power_supply_propval temp;430 int value;431 int ret;432 433 psy = power_supply_get_by_name(pm860x_supplied_to[0]);434 if (!psy)435 return IRQ_HANDLED;436 ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_TEMP, &temp);437 if (ret)438 goto out;439 value = temp.intval / 10;440 441 mutex_lock(&info->lock);442 /* Temperature < -10 C or >40 C, Will not allow charge */443 if (value < -10 || value > 40)444 info->allowed = 0;445 else446 info->allowed = 1;447 dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);448 mutex_unlock(&info->lock);449 450 set_charging_fsm(info);451out:452 power_supply_put(psy);453 return IRQ_HANDLED;454}455 456static irqreturn_t pm860x_exception_handler(int irq, void *data)457{458 struct pm860x_charger_info *info = data;459 460 mutex_lock(&info->lock);461 info->allowed = 0;462 mutex_unlock(&info->lock);463 dev_dbg(info->dev, "%s, irq: %d\n", __func__, irq);464 465 set_charging_fsm(info);466 return IRQ_HANDLED;467}468 469static irqreturn_t pm860x_done_handler(int irq, void *data)470{471 struct pm860x_charger_info *info = data;472 struct power_supply *psy;473 union power_supply_propval val;474 int ret;475 int vbatt;476 477 mutex_lock(&info->lock);478 /* pre-charge done, will transimit to fast-charge stage */479 if (info->state == FSM_PRECHARGE) {480 info->allowed = 1;481 goto out;482 }483 /*484 * Fast charge done, delay to read485 * the correct status of CHG_DET.486 */487 mdelay(5);488 info->allowed = 0;489 psy = power_supply_get_by_name(pm860x_supplied_to[0]);490 if (!psy)491 goto out;492 ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW,493 &val);494 if (ret)495 goto out_psy_put;496 vbatt = val.intval / 1000;497 /*498 * CHG_DONE interrupt is faster than CHG_DET interrupt when499 * plug in/out usb, So we can not rely on info->online, we500 * need check pm8607 status register to check usb is online501 * or not, then we can decide it is real charge done502 * automatically or it is triggered by usb plug out;503 */504 ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2);505 if (ret < 0)506 goto out_psy_put;507 if (vbatt > CHARGE_THRESHOLD && ret & STATUS2_CHG)508 power_supply_set_property(psy, POWER_SUPPLY_PROP_CHARGE_FULL,509 &val);510 511out_psy_put:512 power_supply_put(psy);513out:514 mutex_unlock(&info->lock);515 dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);516 set_charging_fsm(info);517 518 return IRQ_HANDLED;519}520 521static irqreturn_t pm860x_vbattery_handler(int irq, void *data)522{523 struct pm860x_charger_info *info = data;524 525 mutex_lock(&info->lock);526 527 set_vbatt_threshold(info, 0, 0);528 529 if (info->present && info->online)530 info->allowed = 1;531 else532 info->allowed = 0;533 mutex_unlock(&info->lock);534 dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);535 536 set_charging_fsm(info);537 538 return IRQ_HANDLED;539}540 541static irqreturn_t pm860x_vchg_handler(int irq, void *data)542{543 struct pm860x_charger_info *info = data;544 int vchg = 0;545 546 if (info->present)547 goto out;548 549 measure_vchg(info, &vchg);550 551 mutex_lock(&info->lock);552 if (!info->online) {553 int status;554 /* check if over-temp on pm8606 or not */555 status = pm860x_reg_read(info->i2c_8606, PM8606_FLAGS);556 if (status & OVER_TEMP_FLAG) {557 /* clear over temp flag and set auto recover */558 pm860x_set_bits(info->i2c_8606, PM8606_FLAGS,559 OVER_TEMP_FLAG, OVER_TEMP_FLAG);560 pm860x_set_bits(info->i2c_8606,561 PM8606_VSYS,562 OVTEMP_AUTORECOVER,563 OVTEMP_AUTORECOVER);564 dev_dbg(info->dev,565 "%s, pm8606 over-temp occurred\n", __func__);566 }567 }568 569 if (vchg > VCHG_NORMAL_CHECK) {570 set_vchg_threshold(info, VCHG_OVP_LOW, 0);571 info->allowed = 0;572 dev_dbg(info->dev,573 "%s,pm8607 over-vchg occurred,vchg = %dmv\n",574 __func__, vchg);575 } else if (vchg < VCHG_OVP_LOW) {576 set_vchg_threshold(info, VCHG_NORMAL_LOW,577 VCHG_NORMAL_HIGH);578 info->allowed = 1;579 dev_dbg(info->dev,580 "%s,pm8607 over-vchg recover,vchg = %dmv\n",581 __func__, vchg);582 }583 mutex_unlock(&info->lock);584 585 dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);586 set_charging_fsm(info);587out:588 return IRQ_HANDLED;589}590 591static int pm860x_usb_get_prop(struct power_supply *psy,592 enum power_supply_property psp,593 union power_supply_propval *val)594{595 struct pm860x_charger_info *info = power_supply_get_drvdata(psy);596 597 switch (psp) {598 case POWER_SUPPLY_PROP_STATUS:599 if (info->state == FSM_FASTCHARGE ||600 info->state == FSM_PRECHARGE)601 val->intval = POWER_SUPPLY_STATUS_CHARGING;602 else603 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;604 break;605 case POWER_SUPPLY_PROP_ONLINE:606 val->intval = info->online;607 break;608 default:609 return -ENODEV;610 }611 return 0;612}613 614static enum power_supply_property pm860x_usb_props[] = {615 POWER_SUPPLY_PROP_STATUS,616 POWER_SUPPLY_PROP_ONLINE,617};618 619static int pm860x_init_charger(struct pm860x_charger_info *info)620{621 int ret;622 623 ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2);624 if (ret < 0)625 return ret;626 627 mutex_lock(&info->lock);628 info->state = FSM_INIT;629 if (ret & STATUS2_CHG) {630 info->online = 1;631 info->allowed = 1;632 } else {633 info->online = 0;634 info->allowed = 0;635 }636 mutex_unlock(&info->lock);637 638 set_charging_fsm(info);639 return 0;640}641 642static struct pm860x_irq_desc {643 const char *name;644 irqreturn_t (*handler)(int irq, void *data);645} pm860x_irq_descs[] = {646 { "usb supply detect", pm860x_charger_handler },647 { "charge done", pm860x_done_handler },648 { "charge timeout", pm860x_exception_handler },649 { "charge fault", pm860x_exception_handler },650 { "temperature", pm860x_temp_handler },651 { "vbatt", pm860x_vbattery_handler },652 { "vchg", pm860x_vchg_handler },653};654 655static const struct power_supply_desc pm860x_charger_desc = {656 .name = "usb",657 .type = POWER_SUPPLY_TYPE_USB,658 .properties = pm860x_usb_props,659 .num_properties = ARRAY_SIZE(pm860x_usb_props),660 .get_property = pm860x_usb_get_prop,661};662 663static int pm860x_charger_probe(struct platform_device *pdev)664{665 struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);666 struct power_supply_config psy_cfg = {};667 struct pm860x_charger_info *info;668 int ret;669 int count;670 int i;671 int j;672 673 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);674 if (!info)675 return -ENOMEM;676 677 count = pdev->num_resources;678 for (i = 0, j = 0; i < count; i++) {679 info->irq[j] = platform_get_irq(pdev, i);680 if (info->irq[j] < 0)681 continue;682 j++;683 }684 info->irq_nums = j;685 686 info->chip = chip;687 info->i2c =688 (chip->id == CHIP_PM8607) ? chip->client : chip->companion;689 info->i2c_8606 =690 (chip->id == CHIP_PM8607) ? chip->companion : chip->client;691 if (!info->i2c_8606) {692 dev_err(&pdev->dev, "Missed I2C address of 88PM8606!\n");693 return -EINVAL;694 }695 info->dev = &pdev->dev;696 697 /* set init value for the case we are not using battery */698 set_vchg_threshold(info, VCHG_NORMAL_LOW, VCHG_OVP_LOW);699 700 mutex_init(&info->lock);701 platform_set_drvdata(pdev, info);702 703 psy_cfg.drv_data = info;704 psy_cfg.supplied_to = pm860x_supplied_to;705 psy_cfg.num_supplicants = ARRAY_SIZE(pm860x_supplied_to);706 info->usb = devm_power_supply_register(&pdev->dev, &pm860x_charger_desc,707 &psy_cfg);708 if (IS_ERR(info->usb)) {709 return PTR_ERR(info->usb);710 }711 712 pm860x_init_charger(info);713 714 for (i = 0; i < ARRAY_SIZE(info->irq); i++) {715 ret = devm_request_threaded_irq(&pdev->dev, info->irq[i], NULL,716 pm860x_irq_descs[i].handler,717 IRQF_ONESHOT,718 pm860x_irq_descs[i].name, info);719 if (ret < 0) {720 dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",721 info->irq[i], ret);722 return ret;723 }724 }725 return 0;726}727 728static struct platform_driver pm860x_charger_driver = {729 .driver = {730 .name = "88pm860x-charger",731 },732 .probe = pm860x_charger_probe,733};734module_platform_driver(pm860x_charger_driver);735 736MODULE_DESCRIPTION("Marvell 88PM860x Charger driver");737MODULE_LICENSE("GPL");738