linux/drivers/power/supply/axp20x_usb_power.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * AXP20x PMIC USB power supply status driver
   4 *
   5 * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
   6 * Copyright (C) 2014 Bruno Prémont <bonbons@linux-vserver.org>
   7 */
   8
   9#include <linux/bitops.h>
  10#include <linux/device.h>
  11#include <linux/devm-helpers.h>
  12#include <linux/init.h>
  13#include <linux/interrupt.h>
  14#include <linux/kernel.h>
  15#include <linux/mfd/axp20x.h>
  16#include <linux/module.h>
  17#include <linux/of.h>
  18#include <linux/of_device.h>
  19#include <linux/platform_device.h>
  20#include <linux/pm.h>
  21#include <linux/power_supply.h>
  22#include <linux/regmap.h>
  23#include <linux/slab.h>
  24#include <linux/iio/consumer.h>
  25#include <linux/workqueue.h>
  26
  27#define DRVNAME "axp20x-usb-power-supply"
  28
  29#define AXP20X_PWR_STATUS_VBUS_PRESENT  BIT(5)
  30#define AXP20X_PWR_STATUS_VBUS_USED     BIT(4)
  31
  32#define AXP20X_USB_STATUS_VBUS_VALID    BIT(2)
  33
  34#define AXP20X_VBUS_PATH_SEL            BIT(7)
  35#define AXP20X_VBUS_PATH_SEL_OFFSET     7
  36
  37#define AXP20X_VBUS_VHOLD_uV(b)         (4000000 + (((b) >> 3) & 7) * 100000)
  38#define AXP20X_VBUS_VHOLD_MASK          GENMASK(5, 3)
  39#define AXP20X_VBUS_VHOLD_OFFSET        3
  40#define AXP20X_VBUS_CLIMIT_MASK         3
  41#define AXP20X_VBUS_CLIMIT_900mA        0
  42#define AXP20X_VBUS_CLIMIT_500mA        1
  43#define AXP20X_VBUS_CLIMIT_100mA        2
  44#define AXP20X_VBUS_CLIMIT_NONE         3
  45
  46#define AXP813_VBUS_CLIMIT_900mA        0
  47#define AXP813_VBUS_CLIMIT_1500mA       1
  48#define AXP813_VBUS_CLIMIT_2000mA       2
  49#define AXP813_VBUS_CLIMIT_2500mA       3
  50
  51#define AXP20X_ADC_EN1_VBUS_CURR        BIT(2)
  52#define AXP20X_ADC_EN1_VBUS_VOLT        BIT(3)
  53
  54#define AXP20X_VBUS_MON_VBUS_VALID      BIT(3)
  55
  56#define AXP813_BC_EN            BIT(0)
  57
  58/*
  59 * Note do not raise the debounce time, we must report Vusb high within
  60 * 100ms otherwise we get Vbus errors in musb.
  61 */
  62#define DEBOUNCE_TIME                   msecs_to_jiffies(50)
  63
  64struct axp20x_usb_power {
  65        struct regmap *regmap;
  66        struct power_supply *supply;
  67        enum axp20x_variants axp20x_id;
  68        struct iio_channel *vbus_v;
  69        struct iio_channel *vbus_i;
  70        struct delayed_work vbus_detect;
  71        unsigned int old_status;
  72        unsigned int online;
  73        unsigned int num_irqs;
  74        unsigned int irqs[];
  75};
  76
  77static bool axp20x_usb_vbus_needs_polling(struct axp20x_usb_power *power)
  78{
  79        /*
  80         * Polling is only necessary while VBUS is offline. While online, a
  81         * present->absent transition implies an online->offline transition
  82         * and will trigger the VBUS_REMOVAL IRQ.
  83         */
  84        if (power->axp20x_id >= AXP221_ID && !power->online)
  85                return true;
  86
  87        return false;
  88}
  89
  90static irqreturn_t axp20x_usb_power_irq(int irq, void *devid)
  91{
  92        struct axp20x_usb_power *power = devid;
  93
  94        power_supply_changed(power->supply);
  95
  96        mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME);
  97
  98        return IRQ_HANDLED;
  99}
 100
 101static void axp20x_usb_power_poll_vbus(struct work_struct *work)
 102{
 103        struct axp20x_usb_power *power =
 104                container_of(work, struct axp20x_usb_power, vbus_detect.work);
 105        unsigned int val;
 106        int ret;
 107
 108        ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &val);
 109        if (ret)
 110                goto out;
 111
 112        val &= (AXP20X_PWR_STATUS_VBUS_PRESENT | AXP20X_PWR_STATUS_VBUS_USED);
 113        if (val != power->old_status)
 114                power_supply_changed(power->supply);
 115
 116        power->old_status = val;
 117        power->online = val & AXP20X_PWR_STATUS_VBUS_USED;
 118
 119out:
 120        if (axp20x_usb_vbus_needs_polling(power))
 121                mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME);
 122}
 123
 124static int axp20x_get_current_max(struct axp20x_usb_power *power, int *val)
 125{
 126        unsigned int v;
 127        int ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
 128
 129        if (ret)
 130                return ret;
 131
 132        switch (v & AXP20X_VBUS_CLIMIT_MASK) {
 133        case AXP20X_VBUS_CLIMIT_100mA:
 134                if (power->axp20x_id == AXP221_ID)
 135                        *val = -1; /* No 100mA limit */
 136                else
 137                        *val = 100000;
 138                break;
 139        case AXP20X_VBUS_CLIMIT_500mA:
 140                *val = 500000;
 141                break;
 142        case AXP20X_VBUS_CLIMIT_900mA:
 143                *val = 900000;
 144                break;
 145        case AXP20X_VBUS_CLIMIT_NONE:
 146                *val = -1;
 147                break;
 148        }
 149
 150        return 0;
 151}
 152
 153static int axp813_get_current_max(struct axp20x_usb_power *power, int *val)
 154{
 155        unsigned int v;
 156        int ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
 157
 158        if (ret)
 159                return ret;
 160
 161        switch (v & AXP20X_VBUS_CLIMIT_MASK) {
 162        case AXP813_VBUS_CLIMIT_900mA:
 163                *val = 900000;
 164                break;
 165        case AXP813_VBUS_CLIMIT_1500mA:
 166                *val = 1500000;
 167                break;
 168        case AXP813_VBUS_CLIMIT_2000mA:
 169                *val = 2000000;
 170                break;
 171        case AXP813_VBUS_CLIMIT_2500mA:
 172                *val = 2500000;
 173                break;
 174        }
 175        return 0;
 176}
 177
 178static int axp20x_usb_power_get_property(struct power_supply *psy,
 179        enum power_supply_property psp, union power_supply_propval *val)
 180{
 181        struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
 182        unsigned int input, v;
 183        int ret;
 184
 185        switch (psp) {
 186        case POWER_SUPPLY_PROP_VOLTAGE_MIN:
 187                ret = regmap_read(power->regmap, AXP20X_VBUS_IPSOUT_MGMT, &v);
 188                if (ret)
 189                        return ret;
 190
 191                val->intval = AXP20X_VBUS_VHOLD_uV(v);
 192                return 0;
 193        case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 194                if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
 195                        ret = iio_read_channel_processed(power->vbus_v,
 196                                                         &val->intval);
 197                        if (ret)
 198                                return ret;
 199
 200                        /*
 201                         * IIO framework gives mV but Power Supply framework
 202                         * gives uV.
 203                         */
 204                        val->intval *= 1000;
 205                        return 0;
 206                }
 207
 208                ret = axp20x_read_variable_width(power->regmap,
 209                                                 AXP20X_VBUS_V_ADC_H, 12);
 210                if (ret < 0)
 211                        return ret;
 212
 213                val->intval = ret * 1700; /* 1 step = 1.7 mV */
 214                return 0;
 215        case POWER_SUPPLY_PROP_CURRENT_MAX:
 216                if (power->axp20x_id == AXP813_ID)
 217                        return axp813_get_current_max(power, &val->intval);
 218                return axp20x_get_current_max(power, &val->intval);
 219        case POWER_SUPPLY_PROP_CURRENT_NOW:
 220                if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
 221                        ret = iio_read_channel_processed(power->vbus_i,
 222                                                         &val->intval);
 223                        if (ret)
 224                                return ret;
 225
 226                        /*
 227                         * IIO framework gives mA but Power Supply framework
 228                         * gives uA.
 229                         */
 230                        val->intval *= 1000;
 231                        return 0;
 232                }
 233
 234                ret = axp20x_read_variable_width(power->regmap,
 235                                                 AXP20X_VBUS_I_ADC_H, 12);
 236                if (ret < 0)
 237                        return ret;
 238
 239                val->intval = ret * 375; /* 1 step = 0.375 mA */
 240                return 0;
 241        default:
 242                break;
 243        }
 244
 245        /* All the properties below need the input-status reg value */
 246        ret = regmap_read(power->regmap, AXP20X_PWR_INPUT_STATUS, &input);
 247        if (ret)
 248                return ret;
 249
 250        switch (psp) {
 251        case POWER_SUPPLY_PROP_HEALTH:
 252                if (!(input & AXP20X_PWR_STATUS_VBUS_PRESENT)) {
 253                        val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
 254                        break;
 255                }
 256
 257                val->intval = POWER_SUPPLY_HEALTH_GOOD;
 258
 259                if (power->axp20x_id == AXP202_ID) {
 260                        ret = regmap_read(power->regmap,
 261                                          AXP20X_USB_OTG_STATUS, &v);
 262                        if (ret)
 263                                return ret;
 264
 265                        if (!(v & AXP20X_USB_STATUS_VBUS_VALID))
 266                                val->intval =
 267                                        POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
 268                }
 269                break;
 270        case POWER_SUPPLY_PROP_PRESENT:
 271                val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_PRESENT);
 272                break;
 273        case POWER_SUPPLY_PROP_ONLINE:
 274                val->intval = !!(input & AXP20X_PWR_STATUS_VBUS_USED);
 275                break;
 276        default:
 277                return -EINVAL;
 278        }
 279
 280        return 0;
 281}
 282
 283static int axp813_usb_power_set_online(struct axp20x_usb_power *power,
 284                                       int intval)
 285{
 286        int val = !intval << AXP20X_VBUS_PATH_SEL_OFFSET;
 287
 288        return regmap_update_bits(power->regmap,
 289                                  AXP20X_VBUS_IPSOUT_MGMT,
 290                                  AXP20X_VBUS_PATH_SEL, val);
 291}
 292
 293static int axp20x_usb_power_set_voltage_min(struct axp20x_usb_power *power,
 294                                            int intval)
 295{
 296        int val;
 297
 298        switch (intval) {
 299        case 4000000:
 300        case 4100000:
 301        case 4200000:
 302        case 4300000:
 303        case 4400000:
 304        case 4500000:
 305        case 4600000:
 306        case 4700000:
 307                val = (intval - 4000000) / 100000;
 308                return regmap_update_bits(power->regmap,
 309                                          AXP20X_VBUS_IPSOUT_MGMT,
 310                                          AXP20X_VBUS_VHOLD_MASK,
 311                                          val << AXP20X_VBUS_VHOLD_OFFSET);
 312        default:
 313                return -EINVAL;
 314        }
 315
 316        return -EINVAL;
 317}
 318
 319static int axp813_usb_power_set_current_max(struct axp20x_usb_power *power,
 320                                            int intval)
 321{
 322        int val;
 323
 324        switch (intval) {
 325        case 900000:
 326                return regmap_update_bits(power->regmap,
 327                                          AXP20X_VBUS_IPSOUT_MGMT,
 328                                          AXP20X_VBUS_CLIMIT_MASK,
 329                                          AXP813_VBUS_CLIMIT_900mA);
 330        case 1500000:
 331        case 2000000:
 332        case 2500000:
 333                val = (intval - 1000000) / 500000;
 334                return regmap_update_bits(power->regmap,
 335                                          AXP20X_VBUS_IPSOUT_MGMT,
 336                                          AXP20X_VBUS_CLIMIT_MASK, val);
 337        default:
 338                return -EINVAL;
 339        }
 340
 341        return -EINVAL;
 342}
 343
 344static int axp20x_usb_power_set_current_max(struct axp20x_usb_power *power,
 345                                            int intval)
 346{
 347        int val;
 348
 349        switch (intval) {
 350        case 100000:
 351                if (power->axp20x_id == AXP221_ID)
 352                        return -EINVAL;
 353                fallthrough;
 354        case 500000:
 355        case 900000:
 356                val = (900000 - intval) / 400000;
 357                return regmap_update_bits(power->regmap,
 358                                          AXP20X_VBUS_IPSOUT_MGMT,
 359                                          AXP20X_VBUS_CLIMIT_MASK, val);
 360        default:
 361                return -EINVAL;
 362        }
 363
 364        return -EINVAL;
 365}
 366
 367static int axp20x_usb_power_set_property(struct power_supply *psy,
 368                                         enum power_supply_property psp,
 369                                         const union power_supply_propval *val)
 370{
 371        struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
 372
 373        switch (psp) {
 374        case POWER_SUPPLY_PROP_ONLINE:
 375                if (power->axp20x_id != AXP813_ID)
 376                        return -EINVAL;
 377                return axp813_usb_power_set_online(power, val->intval);
 378
 379        case POWER_SUPPLY_PROP_VOLTAGE_MIN:
 380                return axp20x_usb_power_set_voltage_min(power, val->intval);
 381
 382        case POWER_SUPPLY_PROP_CURRENT_MAX:
 383                if (power->axp20x_id == AXP813_ID)
 384                        return axp813_usb_power_set_current_max(power,
 385                                                                val->intval);
 386                return axp20x_usb_power_set_current_max(power, val->intval);
 387
 388        default:
 389                return -EINVAL;
 390        }
 391
 392        return -EINVAL;
 393}
 394
 395static int axp20x_usb_power_prop_writeable(struct power_supply *psy,
 396                                           enum power_supply_property psp)
 397{
 398        struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
 399
 400        /*
 401         * The VBUS path select flag works differently on AXP288 and newer:
 402         *  - On AXP20x and AXP22x, the flag enables VBUS (ignoring N_VBUSEN).
 403         *  - On AXP288 and AXP8xx, the flag disables VBUS (ignoring N_VBUSEN).
 404         * We only expose the control on variants where it can be used to force
 405         * the VBUS input offline.
 406         */
 407        if (psp == POWER_SUPPLY_PROP_ONLINE)
 408                return power->axp20x_id == AXP813_ID;
 409
 410        return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN ||
 411               psp == POWER_SUPPLY_PROP_CURRENT_MAX;
 412}
 413
 414static enum power_supply_property axp20x_usb_power_properties[] = {
 415        POWER_SUPPLY_PROP_HEALTH,
 416        POWER_SUPPLY_PROP_PRESENT,
 417        POWER_SUPPLY_PROP_ONLINE,
 418        POWER_SUPPLY_PROP_VOLTAGE_MIN,
 419        POWER_SUPPLY_PROP_VOLTAGE_NOW,
 420        POWER_SUPPLY_PROP_CURRENT_MAX,
 421        POWER_SUPPLY_PROP_CURRENT_NOW,
 422};
 423
 424static enum power_supply_property axp22x_usb_power_properties[] = {
 425        POWER_SUPPLY_PROP_HEALTH,
 426        POWER_SUPPLY_PROP_PRESENT,
 427        POWER_SUPPLY_PROP_ONLINE,
 428        POWER_SUPPLY_PROP_VOLTAGE_MIN,
 429        POWER_SUPPLY_PROP_CURRENT_MAX,
 430};
 431
 432static const struct power_supply_desc axp20x_usb_power_desc = {
 433        .name = "axp20x-usb",
 434        .type = POWER_SUPPLY_TYPE_USB,
 435        .properties = axp20x_usb_power_properties,
 436        .num_properties = ARRAY_SIZE(axp20x_usb_power_properties),
 437        .property_is_writeable = axp20x_usb_power_prop_writeable,
 438        .get_property = axp20x_usb_power_get_property,
 439        .set_property = axp20x_usb_power_set_property,
 440};
 441
 442static const struct power_supply_desc axp22x_usb_power_desc = {
 443        .name = "axp20x-usb",
 444        .type = POWER_SUPPLY_TYPE_USB,
 445        .properties = axp22x_usb_power_properties,
 446        .num_properties = ARRAY_SIZE(axp22x_usb_power_properties),
 447        .property_is_writeable = axp20x_usb_power_prop_writeable,
 448        .get_property = axp20x_usb_power_get_property,
 449        .set_property = axp20x_usb_power_set_property,
 450};
 451
 452static const char * const axp20x_irq_names[] = {
 453        "VBUS_PLUGIN",
 454        "VBUS_REMOVAL",
 455        "VBUS_VALID",
 456        "VBUS_NOT_VALID",
 457};
 458
 459static const char * const axp22x_irq_names[] = {
 460        "VBUS_PLUGIN",
 461        "VBUS_REMOVAL",
 462};
 463
 464struct axp_data {
 465        const struct power_supply_desc  *power_desc;
 466        const char * const              *irq_names;
 467        unsigned int                    num_irq_names;
 468        enum axp20x_variants            axp20x_id;
 469};
 470
 471static const struct axp_data axp202_data = {
 472        .power_desc     = &axp20x_usb_power_desc,
 473        .irq_names      = axp20x_irq_names,
 474        .num_irq_names  = ARRAY_SIZE(axp20x_irq_names),
 475        .axp20x_id      = AXP202_ID,
 476};
 477
 478static const struct axp_data axp221_data = {
 479        .power_desc     = &axp22x_usb_power_desc,
 480        .irq_names      = axp22x_irq_names,
 481        .num_irq_names  = ARRAY_SIZE(axp22x_irq_names),
 482        .axp20x_id      = AXP221_ID,
 483};
 484
 485static const struct axp_data axp223_data = {
 486        .power_desc     = &axp22x_usb_power_desc,
 487        .irq_names      = axp22x_irq_names,
 488        .num_irq_names  = ARRAY_SIZE(axp22x_irq_names),
 489        .axp20x_id      = AXP223_ID,
 490};
 491
 492static const struct axp_data axp813_data = {
 493        .power_desc     = &axp22x_usb_power_desc,
 494        .irq_names      = axp22x_irq_names,
 495        .num_irq_names  = ARRAY_SIZE(axp22x_irq_names),
 496        .axp20x_id      = AXP813_ID,
 497};
 498
 499#ifdef CONFIG_PM_SLEEP
 500static int axp20x_usb_power_suspend(struct device *dev)
 501{
 502        struct axp20x_usb_power *power = dev_get_drvdata(dev);
 503        int i = 0;
 504
 505        /*
 506         * Allow wake via VBUS_PLUGIN only.
 507         *
 508         * As nested threaded IRQs are not automatically disabled during
 509         * suspend, we must explicitly disable the remainder of the IRQs.
 510         */
 511        if (device_may_wakeup(&power->supply->dev))
 512                enable_irq_wake(power->irqs[i++]);
 513        while (i < power->num_irqs)
 514                disable_irq(power->irqs[i++]);
 515
 516        return 0;
 517}
 518
 519static int axp20x_usb_power_resume(struct device *dev)
 520{
 521        struct axp20x_usb_power *power = dev_get_drvdata(dev);
 522        int i = 0;
 523
 524        if (device_may_wakeup(&power->supply->dev))
 525                disable_irq_wake(power->irqs[i++]);
 526        while (i < power->num_irqs)
 527                enable_irq(power->irqs[i++]);
 528
 529        mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME);
 530
 531        return 0;
 532}
 533#endif
 534
 535static SIMPLE_DEV_PM_OPS(axp20x_usb_power_pm_ops, axp20x_usb_power_suspend,
 536                                                  axp20x_usb_power_resume);
 537
 538static int configure_iio_channels(struct platform_device *pdev,
 539                                  struct axp20x_usb_power *power)
 540{
 541        power->vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v");
 542        if (IS_ERR(power->vbus_v)) {
 543                if (PTR_ERR(power->vbus_v) == -ENODEV)
 544                        return -EPROBE_DEFER;
 545                return PTR_ERR(power->vbus_v);
 546        }
 547
 548        power->vbus_i = devm_iio_channel_get(&pdev->dev, "vbus_i");
 549        if (IS_ERR(power->vbus_i)) {
 550                if (PTR_ERR(power->vbus_i) == -ENODEV)
 551                        return -EPROBE_DEFER;
 552                return PTR_ERR(power->vbus_i);
 553        }
 554
 555        return 0;
 556}
 557
 558static int configure_adc_registers(struct axp20x_usb_power *power)
 559{
 560        /* Enable vbus voltage and current measurement */
 561        return regmap_update_bits(power->regmap, AXP20X_ADC_EN1,
 562                                  AXP20X_ADC_EN1_VBUS_CURR |
 563                                  AXP20X_ADC_EN1_VBUS_VOLT,
 564                                  AXP20X_ADC_EN1_VBUS_CURR |
 565                                  AXP20X_ADC_EN1_VBUS_VOLT);
 566}
 567
 568static int axp20x_usb_power_probe(struct platform_device *pdev)
 569{
 570        struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
 571        struct power_supply_config psy_cfg = {};
 572        struct axp20x_usb_power *power;
 573        const struct axp_data *axp_data;
 574        int i, irq, ret;
 575
 576        if (!of_device_is_available(pdev->dev.of_node))
 577                return -ENODEV;
 578
 579        if (!axp20x) {
 580                dev_err(&pdev->dev, "Parent drvdata not set\n");
 581                return -EINVAL;
 582        }
 583
 584        axp_data = of_device_get_match_data(&pdev->dev);
 585
 586        power = devm_kzalloc(&pdev->dev,
 587                             struct_size(power, irqs, axp_data->num_irq_names),
 588                             GFP_KERNEL);
 589        if (!power)
 590                return -ENOMEM;
 591
 592        platform_set_drvdata(pdev, power);
 593
 594        power->axp20x_id = axp_data->axp20x_id;
 595        power->regmap = axp20x->regmap;
 596        power->num_irqs = axp_data->num_irq_names;
 597
 598        ret = devm_delayed_work_autocancel(&pdev->dev, &power->vbus_detect,
 599                                           axp20x_usb_power_poll_vbus);
 600        if (ret)
 601                return ret;
 602
 603        if (power->axp20x_id == AXP202_ID) {
 604                /* Enable vbus valid checking */
 605                ret = regmap_update_bits(power->regmap, AXP20X_VBUS_MON,
 606                                         AXP20X_VBUS_MON_VBUS_VALID,
 607                                         AXP20X_VBUS_MON_VBUS_VALID);
 608                if (ret)
 609                        return ret;
 610
 611                if (IS_ENABLED(CONFIG_AXP20X_ADC))
 612                        ret = configure_iio_channels(pdev, power);
 613                else
 614                        ret = configure_adc_registers(power);
 615
 616                if (ret)
 617                        return ret;
 618        }
 619
 620        if (power->axp20x_id == AXP813_ID) {
 621                /* Enable USB Battery Charging specification detection */
 622                ret = regmap_update_bits(axp20x->regmap, AXP288_BC_GLOBAL,
 623                                   AXP813_BC_EN, AXP813_BC_EN);
 624                if (ret)
 625                        return ret;
 626        }
 627
 628        psy_cfg.of_node = pdev->dev.of_node;
 629        psy_cfg.drv_data = power;
 630
 631        power->supply = devm_power_supply_register(&pdev->dev,
 632                                                   axp_data->power_desc,
 633                                                   &psy_cfg);
 634        if (IS_ERR(power->supply))
 635                return PTR_ERR(power->supply);
 636
 637        /* Request irqs after registering, as irqs may trigger immediately */
 638        for (i = 0; i < axp_data->num_irq_names; i++) {
 639                irq = platform_get_irq_byname(pdev, axp_data->irq_names[i]);
 640                if (irq < 0)
 641                        return irq;
 642
 643                power->irqs[i] = regmap_irq_get_virq(axp20x->regmap_irqc, irq);
 644                ret = devm_request_any_context_irq(&pdev->dev, power->irqs[i],
 645                                                   axp20x_usb_power_irq, 0,
 646                                                   DRVNAME, power);
 647                if (ret < 0) {
 648                        dev_err(&pdev->dev, "Error requesting %s IRQ: %d\n",
 649                                axp_data->irq_names[i], ret);
 650                        return ret;
 651                }
 652        }
 653
 654        if (axp20x_usb_vbus_needs_polling(power))
 655                queue_delayed_work(system_power_efficient_wq, &power->vbus_detect, 0);
 656
 657        return 0;
 658}
 659
 660static const struct of_device_id axp20x_usb_power_match[] = {
 661        {
 662                .compatible = "x-powers,axp202-usb-power-supply",
 663                .data = &axp202_data,
 664        }, {
 665                .compatible = "x-powers,axp221-usb-power-supply",
 666                .data = &axp221_data,
 667        }, {
 668                .compatible = "x-powers,axp223-usb-power-supply",
 669                .data = &axp223_data,
 670        }, {
 671                .compatible = "x-powers,axp813-usb-power-supply",
 672                .data = &axp813_data,
 673        }, { /* sentinel */ }
 674};
 675MODULE_DEVICE_TABLE(of, axp20x_usb_power_match);
 676
 677static struct platform_driver axp20x_usb_power_driver = {
 678        .probe = axp20x_usb_power_probe,
 679        .driver = {
 680                .name           = DRVNAME,
 681                .of_match_table = axp20x_usb_power_match,
 682                .pm             = &axp20x_usb_power_pm_ops,
 683        },
 684};
 685
 686module_platform_driver(axp20x_usb_power_driver);
 687
 688MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
 689MODULE_DESCRIPTION("AXP20x PMIC USB power supply status driver");
 690MODULE_LICENSE("GPL");
 691