drivers/mfd/tps6586x.c

   1 /*
   2  * Core driver for TI TPS6586x PMIC family
   3  *
   4  * Copyright (c) 2010 CompuLab Ltd.
   5  * Mike Rapoport <mike@compulab.co.il>
   6  *
   7  * Based on da903x.c.
   8  * Copyright (C) 2008 Compulab, Ltd.
   9  * Mike Rapoport <mike@compulab.co.il>
  10  * Copyright (C) 2006-2008 Marvell International Ltd.
  11  * Eric Miao <eric.miao@marvell.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #include <linux/interrupt.h>
  19 #include <linux/irq.h>
  20 #include <linux/irqdomain.h>
  21 #include <linux/kernel.h>
  22 #include <linux/module.h>
  23 #include <linux/mutex.h>
  24 #include <linux/slab.h>
  25 #include <linux/err.h>
  26 #include <linux/i2c.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/regmap.h>
  29
  30 #include <linux/mfd/core.h>
  31 #include <linux/mfd/tps6586x.h>
  32
  33 #define TPS6586X_SUPPLYENE      0x14
  34 #define EXITSLREQ_BIT           BIT(1)
  35 #define SLEEP_MODE_BIT          BIT(3)
  36
  37 /* interrupt control registers */
  38 #define TPS6586X_INT_ACK1       0xb5
  39 #define TPS6586X_INT_ACK2       0xb6
  40 #define TPS6586X_INT_ACK3       0xb7
  41 #define TPS6586X_INT_ACK4       0xb8
  42
  43 /* interrupt mask registers */
  44 #define TPS6586X_INT_MASK1      0xb0
  45 #define TPS6586X_INT_MASK2      0xb1
  46 #define TPS6586X_INT_MASK3      0xb2
  47 #define TPS6586X_INT_MASK4      0xb3
  48 #define TPS6586X_INT_MASK5      0xb4
  49
  50 /* device id */
  51 #define TPS6586X_VERSIONCRC     0xcd
  52
  53 /* Maximum register */
  54 #define TPS6586X_MAX_REGISTER   (TPS6586X_VERSIONCRC + 1)
  55
  56 struct tps6586x_irq_data {
  57         u8      mask_reg;
  58         u8      mask_mask;
  59 };
  60
  61 #define TPS6586X_IRQ(_reg, _mask)                               \
  62         {                                                       \
  63                 .mask_reg = (_reg) - TPS6586X_INT_MASK1,        \
  64                 .mask_mask = (_mask),                           \
  65         }
  66
  67 static const struct tps6586x_irq_data tps6586x_irqs[] = {
  68         [TPS6586X_INT_PLDO_0]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0),
  69         [TPS6586X_INT_PLDO_1]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1),
  70         [TPS6586X_INT_PLDO_2]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2),
  71         [TPS6586X_INT_PLDO_3]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3),
  72         [TPS6586X_INT_PLDO_4]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4),
  73         [TPS6586X_INT_PLDO_5]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5),
  74         [TPS6586X_INT_PLDO_6]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6),
  75         [TPS6586X_INT_PLDO_7]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7),
  76         [TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0),
  77         [TPS6586X_INT_ADC]      = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1),
  78         [TPS6586X_INT_PLDO_8]   = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2),
  79         [TPS6586X_INT_PLDO_9]   = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3),
  80         [TPS6586X_INT_PSM_0]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4),
  81         [TPS6586X_INT_PSM_1]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5),
  82         [TPS6586X_INT_PSM_2]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6),
  83         [TPS6586X_INT_PSM_3]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7),
  84         [TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4),
  85         [TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03),
  86         [TPS6586X_INT_USB_DET]  = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2),
  87         [TPS6586X_INT_AC_DET]   = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3),
  88         [TPS6586X_INT_BAT_DET]  = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0),
  89         [TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc),
  90         [TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06),
  91         [TPS6586X_INT_PP]       = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0),
  92         [TPS6586X_INT_RESUME]   = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5),
  93         [TPS6586X_INT_LOW_SYS]  = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6),
  94         [TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1),
  95 };
  96
  97 static struct resource tps6586x_rtc_resources[] = {
  98         {
  99                 .start  = TPS6586X_INT_RTC_ALM1,
 100                 .end    = TPS6586X_INT_RTC_ALM1,
 101                 .flags  = IORESOURCE_IRQ,
 102         },
 103 };
 104
 105 static struct mfd_cell tps6586x_cell[] = {
 106         {
 107                 .name = "tps6586x-gpio",
 108         },
 109         {
 110                 .name = "tps6586x-pmic",
 111         },
 112         {
 113                 .name = "tps6586x-rtc",
 114                 .num_resources = ARRAY_SIZE(tps6586x_rtc_resources),
 115                 .resources = &tps6586x_rtc_resources[0],
 116         },
 117         {
 118                 .name = "tps6586x-onkey",
 119         },
 120 };
 121
 122 struct tps6586x {
 123         struct device           *dev;
 124         struct i2c_client       *client;
 125         struct regmap           *regmap;
 126
 127         struct irq_chip         irq_chip;
 128         struct mutex            irq_lock;
 129         int                     irq_base;
 130         u32                     irq_en;
 131         u8                      mask_reg[5];
 132         struct irq_domain       *irq_domain;
 133 };
 134
 135 static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
 136 {
 137         return i2c_get_clientdata(to_i2c_client(dev));
 138 }
 139
 140 int tps6586x_write(struct device *dev, int reg, uint8_t val)
 141 {
 142         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 143
 144         return regmap_write(tps6586x->regmap, reg, val);
 145 }
 146 EXPORT_SYMBOL_GPL(tps6586x_write);
 147
 148 int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val)
 149 {
 150         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 151
 152         return regmap_bulk_write(tps6586x->regmap, reg, val, len);
 153 }
 154 EXPORT_SYMBOL_GPL(tps6586x_writes);
 155
 156 int tps6586x_read(struct device *dev, int reg, uint8_t *val)
 157 {
 158         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 159         unsigned int rval;
 160         int ret;
 161
 162         ret = regmap_read(tps6586x->regmap, reg, &rval);
 163         if (!ret)
 164                 *val = rval;
 165         return ret;
 166 }
 167 EXPORT_SYMBOL_GPL(tps6586x_read);
 168
 169 int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val)
 170 {
 171         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 172
 173         return regmap_bulk_read(tps6586x->regmap, reg, val, len);
 174 }
 175 EXPORT_SYMBOL_GPL(tps6586x_reads);
 176
 177 int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
 178 {
 179         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 180
 181         return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask);
 182 }
 183 EXPORT_SYMBOL_GPL(tps6586x_set_bits);
 184
 185 int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
 186 {
 187         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 188
 189         return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0);
 190 }
 191 EXPORT_SYMBOL_GPL(tps6586x_clr_bits);
 192
 193 int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
 194 {
 195         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 196
 197         return regmap_update_bits(tps6586x->regmap, reg, mask, val);
 198 }
 199 EXPORT_SYMBOL_GPL(tps6586x_update);
 200
 201 int tps6586x_irq_get_virq(struct device *dev, int irq)
 202 {
 203         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 204
 205         return irq_create_mapping(tps6586x->irq_domain, irq);
 206 }
 207 EXPORT_SYMBOL_GPL(tps6586x_irq_get_virq);
 208
 209 static int __remove_subdev(struct device *dev, void *unused)
 210 {
 211         platform_device_unregister(to_platform_device(dev));
 212         return 0;
 213 }
 214
 215 static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
 216 {
 217         return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
 218 }
 219
 220 static void tps6586x_irq_lock(struct irq_data *data)
 221 {
 222         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
 223
 224         mutex_lock(&tps6586x->irq_lock);
 225 }
 226
 227 static void tps6586x_irq_enable(struct irq_data *irq_data)
 228 {
 229         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
 230         unsigned int __irq = irq_data->hwirq;
 231         const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
 232
 233         tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
 234         tps6586x->irq_en |= (1 << __irq);
 235 }
 236
 237 static void tps6586x_irq_disable(struct irq_data *irq_data)
 238 {
 239         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
 240
 241         unsigned int __irq = irq_data->hwirq;
 242         const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
 243
 244         tps6586x->mask_reg[data->mask_reg] |= data->mask_mask;
 245         tps6586x->irq_en &= ~(1 << __irq);
 246 }
 247
 248 static void tps6586x_irq_sync_unlock(struct irq_data *data)
 249 {
 250         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
 251         int i;
 252
 253         for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) {
 254                 int ret;
 255                 ret = tps6586x_write(tps6586x->dev,
 256                                             TPS6586X_INT_MASK1 + i,
 257                                             tps6586x->mask_reg[i]);
 258                 WARN_ON(ret);
 259         }
 260
 261         mutex_unlock(&tps6586x->irq_lock);
 262 }
 263
 264 static struct irq_chip tps6586x_irq_chip = {
 265         .name = "tps6586x",
 266         .irq_bus_lock = tps6586x_irq_lock,
 267         .irq_bus_sync_unlock = tps6586x_irq_sync_unlock,
 268         .irq_disable = tps6586x_irq_disable,
 269         .irq_enable = tps6586x_irq_enable,
 270 };
 271
 272 static int tps6586x_irq_map(struct irq_domain *h, unsigned int virq,
 273                                 irq_hw_number_t hw)
 274 {
 275         struct tps6586x *tps6586x = h->host_data;
 276
 277         irq_set_chip_data(virq, tps6586x);
 278         irq_set_chip_and_handler(virq, &tps6586x_irq_chip, handle_simple_irq);
 279         irq_set_nested_thread(virq, 1);
 280
 281         /* ARM needs us to explicitly flag the IRQ as valid
 282          * and will set them noprobe when we do so. */
 283 #ifdef CONFIG_ARM
 284         set_irq_flags(virq, IRQF_VALID);
 285 #else
 286         irq_set_noprobe(virq);
 287 #endif
 288
 289         return 0;
 290 }
 291
 292 static struct irq_domain_ops tps6586x_domain_ops = {
 293         .map    = tps6586x_irq_map,
 294         .xlate  = irq_domain_xlate_twocell,
 295 };
 296
 297 static irqreturn_t tps6586x_irq(int irq, void *data)
 298 {
 299         struct tps6586x *tps6586x = data;
 300         u32 acks;
 301         int ret = 0;
 302
 303         ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
 304                              sizeof(acks), (uint8_t *)&acks);
 305
 306         if (ret < 0) {
 307                 dev_err(tps6586x->dev, "failed to read interrupt status\n");
 308                 return IRQ_NONE;
 309         }
 310
 311         acks = le32_to_cpu(acks);
 312
 313         while (acks) {
 314                 int i = __ffs(acks);
 315
 316                 if (tps6586x->irq_en & (1 << i))
 317                         handle_nested_irq(
 318                                 irq_find_mapping(tps6586x->irq_domain, i));
 319
 320                 acks &= ~(1 << i);
 321         }
 322
 323         return IRQ_HANDLED;
 324 }
 325
 326 static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
 327                                        int irq_base)
 328 {
 329         int i, ret;
 330         u8 tmp[4];
 331         int new_irq_base;
 332         int irq_num = ARRAY_SIZE(tps6586x_irqs);
 333
 334         mutex_init(&tps6586x->irq_lock);
 335         for (i = 0; i < 5; i++) {
 336                 tps6586x->mask_reg[i] = 0xff;
 337                 tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
 338         }
 339
 340         tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
 341
 342         if  (irq_base > 0) {
 343                 new_irq_base = irq_alloc_descs(irq_base, 0, irq_num, -1);
 344                 if (new_irq_base < 0) {
 345                         dev_err(tps6586x->dev,
 346                                 "Failed to alloc IRQs: %d\n", new_irq_base);
 347                         return new_irq_base;
 348                 }
 349         } else {
 350                 new_irq_base = 0;
 351         }
 352
 353         tps6586x->irq_domain = irq_domain_add_simple(tps6586x->dev->of_node,
 354                                 irq_num, new_irq_base, &tps6586x_domain_ops,
 355                                 tps6586x);
 356         if (!tps6586x->irq_domain) {
 357                 dev_err(tps6586x->dev, "Failed to create IRQ domain\n");
 358                 return -ENOMEM;
 359         }
 360         ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
 361                                    "tps6586x", tps6586x);
 362
 363         if (!ret) {
 364                 device_init_wakeup(tps6586x->dev, 1);
 365                 enable_irq_wake(irq);
 366         }
 367
 368         return ret;
 369 }
 370
 371 static int tps6586x_add_subdevs(struct tps6586x *tps6586x,
 372                                           struct tps6586x_platform_data *pdata)
 373 {
 374         struct tps6586x_subdev_info *subdev;
 375         struct platform_device *pdev;
 376         int i, ret = 0;
 377
 378         for (i = 0; i < pdata->num_subdevs; i++) {
 379                 subdev = &pdata->subdevs[i];
 380
 381                 pdev = platform_device_alloc(subdev->name, subdev->id);
 382                 if (!pdev) {
 383                         ret = -ENOMEM;
 384                         goto failed;
 385                 }
 386
 387                 pdev->dev.parent = tps6586x->dev;
 388                 pdev->dev.platform_data = subdev->platform_data;
 389                 pdev->dev.of_node = subdev->of_node;
 390
 391                 ret = platform_device_add(pdev);
 392                 if (ret) {
 393                         platform_device_put(pdev);
 394                         goto failed;
 395                 }
 396         }
 397         return 0;
 398
 399 failed:
 400         tps6586x_remove_subdevs(tps6586x);
 401         return ret;
 402 }
 403
 404 #ifdef CONFIG_OF
 405 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
 406 {
 407         struct device_node *np = client->dev.of_node;
 408         struct tps6586x_platform_data *pdata;
 409
 410         pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
 411         if (!pdata) {
 412                 dev_err(&client->dev, "Memory allocation failed\n");
 413                 return NULL;
 414         }
 415
 416         pdata->num_subdevs = 0;
 417         pdata->subdevs = NULL;
 418         pdata->gpio_base = -1;
 419         pdata->irq_base = -1;
 420         pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller");
 421
 422         return pdata;
 423 }
 424
 425 static struct of_device_id tps6586x_of_match[] = {
 426         { .compatible = "ti,tps6586x", },
 427         { },
 428 };
 429 #else
 430 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
 431 {
 432         return NULL;
 433 }
 434 #endif
 435
 436 static bool is_volatile_reg(struct device *dev, unsigned int reg)
 437 {
 438         /* Cache all interrupt mask register */
 439         if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5))
 440                 return false;
 441
 442         return true;
 443 }
 444
 445 static const struct regmap_config tps6586x_regmap_config = {
 446         .reg_bits = 8,
 447         .val_bits = 8,
 448         .max_register = TPS6586X_MAX_REGISTER - 1,
 449         .volatile_reg = is_volatile_reg,
 450         .cache_type = REGCACHE_RBTREE,
 451 };
 452
 453 static struct device *tps6586x_dev;
 454 static void tps6586x_power_off(void)
 455 {
 456         if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT))
 457                 return;
 458
 459         tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT);
 460 }
 461
 462 static int tps6586x_i2c_probe(struct i2c_client *client,
 463                                         const struct i2c_device_id *id)
 464 {
 465         struct tps6586x_platform_data *pdata = client->dev.platform_data;
 466         struct tps6586x *tps6586x;
 467         int ret;
 468
 469         if (!pdata && client->dev.of_node)
 470                 pdata = tps6586x_parse_dt(client);
 471
 472         if (!pdata) {
 473                 dev_err(&client->dev, "tps6586x requires platform data\n");
 474                 return -ENOTSUPP;
 475         }
 476
 477         ret = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC);
 478         if (ret < 0) {
 479                 dev_err(&client->dev, "Chip ID read failed: %d\n", ret);
 480                 return -EIO;
 481         }
 482
 483         dev_info(&client->dev, "VERSIONCRC is %02x\n", ret);
 484
 485         tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL);
 486         if (tps6586x == NULL) {
 487                 dev_err(&client->dev, "memory for tps6586x alloc failed\n");
 488                 return -ENOMEM;
 489         }
 490
 491         tps6586x->client = client;
 492         tps6586x->dev = &client->dev;
 493         i2c_set_clientdata(client, tps6586x);
 494
 495         tps6586x->regmap = devm_regmap_init_i2c(client,
 496                                         &tps6586x_regmap_config);
 497         if (IS_ERR(tps6586x->regmap)) {
 498                 ret = PTR_ERR(tps6586x->regmap);
 499                 dev_err(&client->dev, "regmap init failed: %d\n", ret);
 500                 return ret;
 501         }
 502
 503
 504         if (client->irq) {
 505                 ret = tps6586x_irq_init(tps6586x, client->irq,
 506                                         pdata->irq_base);
 507                 if (ret) {
 508                         dev_err(&client->dev, "IRQ init failed: %d\n", ret);
 509                         return ret;
 510                 }
 511         }
 512
 513         ret = mfd_add_devices(tps6586x->dev, -1,
 514                               tps6586x_cell, ARRAY_SIZE(tps6586x_cell),
 515                               NULL, 0, tps6586x->irq_domain);
 516         if (ret < 0) {
 517                 dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
 518                 goto err_mfd_add;
 519         }
 520
 521         ret = tps6586x_add_subdevs(tps6586x, pdata);
 522         if (ret) {
 523                 dev_err(&client->dev, "add devices failed: %d\n", ret);
 524                 goto err_add_devs;
 525         }
 526
 527         if (pdata->pm_off && !pm_power_off) {
 528                 tps6586x_dev = &client->dev;
 529                 pm_power_off = tps6586x_power_off;
 530         }
 531
 532         return 0;
 533
 534 err_add_devs:
 535         mfd_remove_devices(tps6586x->dev);
 536 err_mfd_add:
 537         if (client->irq)
 538                 free_irq(client->irq, tps6586x);
 539         return ret;
 540 }
 541
 542 static int tps6586x_i2c_remove(struct i2c_client *client)
 543 {
 544         struct tps6586x *tps6586x = i2c_get_clientdata(client);
 545
 546         tps6586x_remove_subdevs(tps6586x);
 547         mfd_remove_devices(tps6586x->dev);
 548         if (client->irq)
 549                 free_irq(client->irq, tps6586x);
 550         return 0;
 551 }
 552
 553 static const struct i2c_device_id tps6586x_id_table[] = {
 554         { "tps6586x", 0 },
 555         { },
 556 };
 557 MODULE_DEVICE_TABLE(i2c, tps6586x_id_table);
 558
 559 static struct i2c_driver tps6586x_driver = {
 560         .driver = {
 561                 .name   = "tps6586x",
 562                 .owner  = THIS_MODULE,
 563                 .of_match_table = of_match_ptr(tps6586x_of_match),
 564         },
 565         .probe          = tps6586x_i2c_probe,
 566         .remove         = tps6586x_i2c_remove,
 567         .id_table       = tps6586x_id_table,
 568 };
 569
 570 static int __init tps6586x_init(void)
 571 {
 572         return i2c_add_driver(&tps6586x_driver);
 573 }
 574 subsys_initcall(tps6586x_init);
 575
 576 static void __exit tps6586x_exit(void)
 577 {
 578         i2c_del_driver(&tps6586x_driver);
 579 }
 580 module_exit(tps6586x_exit);
 581
 582 MODULE_DESCRIPTION("TPS6586X core driver");
 583 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
 584 MODULE_LICENSE("GPL");