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/kernel.h>
  21 #include <linux/module.h>
  22 #include <linux/mutex.h>
  23 #include <linux/slab.h>
  24 #include <linux/err.h>
  25 #include <linux/i2c.h>
  26 #include <linux/regmap.h>
  27 #include <linux/regulator/of_regulator.h>
  28 #include <linux/regulator/machine.h>
  29
  30 #include <linux/mfd/core.h>
  31 #include <linux/mfd/tps6586x.h>
  32
  33 /* interrupt control registers */
  34 #define TPS6586X_INT_ACK1       0xb5
  35 #define TPS6586X_INT_ACK2       0xb6
  36 #define TPS6586X_INT_ACK3       0xb7
  37 #define TPS6586X_INT_ACK4       0xb8
  38
  39 /* interrupt mask registers */
  40 #define TPS6586X_INT_MASK1      0xb0
  41 #define TPS6586X_INT_MASK2      0xb1
  42 #define TPS6586X_INT_MASK3      0xb2
  43 #define TPS6586X_INT_MASK4      0xb3
  44 #define TPS6586X_INT_MASK5      0xb4
  45
  46 /* device id */
  47 #define TPS6586X_VERSIONCRC     0xcd
  48
  49 /* Maximum register */
  50 #define TPS6586X_MAX_REGISTER   (TPS6586X_VERSIONCRC + 1)
  51
  52 struct tps6586x_irq_data {
  53         u8      mask_reg;
  54         u8      mask_mask;
  55 };
  56
  57 #define TPS6586X_IRQ(_reg, _mask)                               \
  58         {                                                       \
  59                 .mask_reg = (_reg) - TPS6586X_INT_MASK1,        \
  60                 .mask_mask = (_mask),                           \
  61         }
  62
  63 static const struct tps6586x_irq_data tps6586x_irqs[] = {
  64         [TPS6586X_INT_PLDO_0]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0),
  65         [TPS6586X_INT_PLDO_1]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1),
  66         [TPS6586X_INT_PLDO_2]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2),
  67         [TPS6586X_INT_PLDO_3]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3),
  68         [TPS6586X_INT_PLDO_4]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4),
  69         [TPS6586X_INT_PLDO_5]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5),
  70         [TPS6586X_INT_PLDO_6]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6),
  71         [TPS6586X_INT_PLDO_7]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7),
  72         [TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0),
  73         [TPS6586X_INT_ADC]      = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1),
  74         [TPS6586X_INT_PLDO_8]   = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2),
  75         [TPS6586X_INT_PLDO_9]   = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3),
  76         [TPS6586X_INT_PSM_0]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4),
  77         [TPS6586X_INT_PSM_1]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5),
  78         [TPS6586X_INT_PSM_2]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6),
  79         [TPS6586X_INT_PSM_3]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7),
  80         [TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4),
  81         [TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03),
  82         [TPS6586X_INT_USB_DET]  = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2),
  83         [TPS6586X_INT_AC_DET]   = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3),
  84         [TPS6586X_INT_BAT_DET]  = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0),
  85         [TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc),
  86         [TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06),
  87         [TPS6586X_INT_PP]       = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0),
  88         [TPS6586X_INT_RESUME]   = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5),
  89         [TPS6586X_INT_LOW_SYS]  = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6),
  90         [TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1),
  91 };
  92
  93 static struct mfd_cell tps6586x_cell[] = {
  94         {
  95                 .name = "tps6586x-gpio",
  96         },
  97         {
  98                 .name = "tps6586x-rtc",
  99         },
 100         {
 101                 .name = "tps6586x-onkey",
 102         },
 103 };
 104
 105 struct tps6586x {
 106         struct device           *dev;
 107         struct i2c_client       *client;
 108         struct regmap           *regmap;
 109
 110         struct irq_chip         irq_chip;
 111         struct mutex            irq_lock;
 112         int                     irq_base;
 113         u32                     irq_en;
 114         u8                      mask_reg[5];
 115 };
 116
 117 static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
 118 {
 119         return i2c_get_clientdata(to_i2c_client(dev));
 120 }
 121
 122 int tps6586x_write(struct device *dev, int reg, uint8_t val)
 123 {
 124         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 125
 126         return regmap_write(tps6586x->regmap, reg, val);
 127 }
 128 EXPORT_SYMBOL_GPL(tps6586x_write);
 129
 130 int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val)
 131 {
 132         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 133
 134         return regmap_bulk_write(tps6586x->regmap, reg, val, len);
 135 }
 136 EXPORT_SYMBOL_GPL(tps6586x_writes);
 137
 138 int tps6586x_read(struct device *dev, int reg, uint8_t *val)
 139 {
 140         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 141         unsigned int rval;
 142         int ret;
 143
 144         ret = regmap_read(tps6586x->regmap, reg, &rval);
 145         if (!ret)
 146                 *val = rval;
 147         return ret;
 148 }
 149 EXPORT_SYMBOL_GPL(tps6586x_read);
 150
 151 int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val)
 152 {
 153         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 154
 155         return regmap_bulk_read(tps6586x->regmap, reg, val, len);
 156 }
 157 EXPORT_SYMBOL_GPL(tps6586x_reads);
 158
 159 int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
 160 {
 161         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 162
 163         return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask);
 164 }
 165 EXPORT_SYMBOL_GPL(tps6586x_set_bits);
 166
 167 int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
 168 {
 169         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 170
 171         return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0);
 172 }
 173 EXPORT_SYMBOL_GPL(tps6586x_clr_bits);
 174
 175 int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
 176 {
 177         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 178
 179         return regmap_update_bits(tps6586x->regmap, reg, mask, val);
 180 }
 181 EXPORT_SYMBOL_GPL(tps6586x_update);
 182
 183 static int __remove_subdev(struct device *dev, void *unused)
 184 {
 185         platform_device_unregister(to_platform_device(dev));
 186         return 0;
 187 }
 188
 189 static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
 190 {
 191         return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
 192 }
 193
 194 static void tps6586x_irq_lock(struct irq_data *data)
 195 {
 196         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
 197
 198         mutex_lock(&tps6586x->irq_lock);
 199 }
 200
 201 static void tps6586x_irq_enable(struct irq_data *irq_data)
 202 {
 203         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
 204         unsigned int __irq = irq_data->irq - tps6586x->irq_base;
 205         const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
 206
 207         tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
 208         tps6586x->irq_en |= (1 << __irq);
 209 }
 210
 211 static void tps6586x_irq_disable(struct irq_data *irq_data)
 212 {
 213         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
 214
 215         unsigned int __irq = irq_data->irq - tps6586x->irq_base;
 216         const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
 217
 218         tps6586x->mask_reg[data->mask_reg] |= data->mask_mask;
 219         tps6586x->irq_en &= ~(1 << __irq);
 220 }
 221
 222 static void tps6586x_irq_sync_unlock(struct irq_data *data)
 223 {
 224         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
 225         int i;
 226
 227         for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) {
 228                 int ret;
 229                 ret = tps6586x_write(tps6586x->dev,
 230                                             TPS6586X_INT_MASK1 + i,
 231                                             tps6586x->mask_reg[i]);
 232                 WARN_ON(ret);
 233         }
 234
 235         mutex_unlock(&tps6586x->irq_lock);
 236 }
 237
 238 static irqreturn_t tps6586x_irq(int irq, void *data)
 239 {
 240         struct tps6586x *tps6586x = data;
 241         u32 acks;
 242         int ret = 0;
 243
 244         ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
 245                              sizeof(acks), (uint8_t *)&acks);
 246
 247         if (ret < 0) {
 248                 dev_err(tps6586x->dev, "failed to read interrupt status\n");
 249                 return IRQ_NONE;
 250         }
 251
 252         acks = le32_to_cpu(acks);
 253
 254         while (acks) {
 255                 int i = __ffs(acks);
 256
 257                 if (tps6586x->irq_en & (1 << i))
 258                         handle_nested_irq(tps6586x->irq_base + i);
 259
 260                 acks &= ~(1 << i);
 261         }
 262
 263         return IRQ_HANDLED;
 264 }
 265
 266 static int __devinit tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
 267                                        int irq_base)
 268 {
 269         int i, ret;
 270         u8 tmp[4];
 271
 272         if (!irq_base) {
 273                 dev_warn(tps6586x->dev, "No interrupt support on IRQ base\n");
 274                 return -EINVAL;
 275         }
 276
 277         mutex_init(&tps6586x->irq_lock);
 278         for (i = 0; i < 5; i++) {
 279                 tps6586x->mask_reg[i] = 0xff;
 280                 tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
 281         }
 282
 283         tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
 284
 285         tps6586x->irq_base = irq_base;
 286
 287         tps6586x->irq_chip.name = "tps6586x";
 288         tps6586x->irq_chip.irq_enable = tps6586x_irq_enable;
 289         tps6586x->irq_chip.irq_disable = tps6586x_irq_disable;
 290         tps6586x->irq_chip.irq_bus_lock = tps6586x_irq_lock;
 291         tps6586x->irq_chip.irq_bus_sync_unlock = tps6586x_irq_sync_unlock;
 292
 293         for (i = 0; i < ARRAY_SIZE(tps6586x_irqs); i++) {
 294                 int __irq = i + tps6586x->irq_base;
 295                 irq_set_chip_data(__irq, tps6586x);
 296                 irq_set_chip_and_handler(__irq, &tps6586x->irq_chip,
 297                                          handle_simple_irq);
 298                 irq_set_nested_thread(__irq, 1);
 299 #ifdef CONFIG_ARM
 300                 set_irq_flags(__irq, IRQF_VALID);
 301 #endif
 302         }
 303
 304         ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
 305                                    "tps6586x", tps6586x);
 306
 307         if (!ret) {
 308                 device_init_wakeup(tps6586x->dev, 1);
 309                 enable_irq_wake(irq);
 310         }
 311
 312         return ret;
 313 }
 314
 315 static int __devinit tps6586x_add_subdevs(struct tps6586x *tps6586x,
 316                                           struct tps6586x_platform_data *pdata)
 317 {
 318         struct tps6586x_subdev_info *subdev;
 319         struct platform_device *pdev;
 320         int i, ret = 0;
 321
 322         for (i = 0; i < pdata->num_subdevs; i++) {
 323                 subdev = &pdata->subdevs[i];
 324
 325                 pdev = platform_device_alloc(subdev->name, subdev->id);
 326                 if (!pdev) {
 327                         ret = -ENOMEM;
 328                         goto failed;
 329                 }
 330
 331                 pdev->dev.parent = tps6586x->dev;
 332                 pdev->dev.platform_data = subdev->platform_data;
 333                 pdev->dev.of_node = subdev->of_node;
 334
 335                 ret = platform_device_add(pdev);
 336                 if (ret) {
 337                         platform_device_put(pdev);
 338                         goto failed;
 339                 }
 340         }
 341         return 0;
 342
 343 failed:
 344         tps6586x_remove_subdevs(tps6586x);
 345         return ret;
 346 }
 347
 348 #ifdef CONFIG_OF
 349 static struct of_regulator_match tps6586x_matches[] = {
 350         { .name = "sys",     .driver_data = (void *)TPS6586X_ID_SYS     },
 351         { .name = "sm0",     .driver_data = (void *)TPS6586X_ID_SM_0    },
 352         { .name = "sm1",     .driver_data = (void *)TPS6586X_ID_SM_1    },
 353         { .name = "sm2",     .driver_data = (void *)TPS6586X_ID_SM_2    },
 354         { .name = "ldo0",    .driver_data = (void *)TPS6586X_ID_LDO_0   },
 355         { .name = "ldo1",    .driver_data = (void *)TPS6586X_ID_LDO_1   },
 356         { .name = "ldo2",    .driver_data = (void *)TPS6586X_ID_LDO_2   },
 357         { .name = "ldo3",    .driver_data = (void *)TPS6586X_ID_LDO_3   },
 358         { .name = "ldo4",    .driver_data = (void *)TPS6586X_ID_LDO_4   },
 359         { .name = "ldo5",    .driver_data = (void *)TPS6586X_ID_LDO_5   },
 360         { .name = "ldo6",    .driver_data = (void *)TPS6586X_ID_LDO_6   },
 361         { .name = "ldo7",    .driver_data = (void *)TPS6586X_ID_LDO_7   },
 362         { .name = "ldo8",    .driver_data = (void *)TPS6586X_ID_LDO_8   },
 363         { .name = "ldo9",    .driver_data = (void *)TPS6586X_ID_LDO_9   },
 364         { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
 365 };
 366
 367 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
 368 {
 369         const unsigned int num = ARRAY_SIZE(tps6586x_matches);
 370         struct device_node *np = client->dev.of_node;
 371         struct tps6586x_platform_data *pdata;
 372         struct tps6586x_subdev_info *devs;
 373         struct device_node *regs;
 374         const char *sys_rail_name = NULL;
 375         unsigned int count;
 376         unsigned int i, j;
 377         int err;
 378
 379         regs = of_find_node_by_name(np, "regulators");
 380         if (!regs)
 381                 return NULL;
 382
 383         err = of_regulator_match(&client->dev, regs, tps6586x_matches, num);
 384         if (err < 0) {
 385                 of_node_put(regs);
 386                 return NULL;
 387         }
 388
 389         of_node_put(regs);
 390         count = err;
 391
 392         devs = devm_kzalloc(&client->dev, count * sizeof(*devs), GFP_KERNEL);
 393         if (!devs)
 394                 return NULL;
 395
 396         for (i = 0, j = 0; i < num && j < count; i++) {
 397                 struct regulator_init_data *reg_idata;
 398
 399                 if (!tps6586x_matches[i].init_data)
 400                         continue;
 401
 402                 reg_idata  = tps6586x_matches[i].init_data;
 403                 devs[j].name = "tps6586x-regulator";
 404                 devs[j].platform_data = tps6586x_matches[i].init_data;
 405                 devs[j].id = (int)tps6586x_matches[i].driver_data;
 406                 if (devs[j].id == TPS6586X_ID_SYS)
 407                         sys_rail_name = reg_idata->constraints.name;
 408
 409                 if ((devs[j].id == TPS6586X_ID_LDO_5) ||
 410                         (devs[j].id == TPS6586X_ID_LDO_RTC))
 411                         reg_idata->supply_regulator = sys_rail_name;
 412
 413                 devs[j].of_node = tps6586x_matches[i].of_node;
 414                 j++;
 415         }
 416
 417         pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
 418         if (!pdata)
 419                 return NULL;
 420
 421         pdata->num_subdevs = count;
 422         pdata->subdevs = devs;
 423         pdata->gpio_base = -1;
 424         pdata->irq_base = -1;
 425
 426         return pdata;
 427 }
 428
 429 static struct of_device_id tps6586x_of_match[] = {
 430         { .compatible = "ti,tps6586x", },
 431         { },
 432 };
 433 #else
 434 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
 435 {
 436         return NULL;
 437 }
 438 #endif
 439
 440 static bool is_volatile_reg(struct device *dev, unsigned int reg)
 441 {
 442         /* Cache all interrupt mask register */
 443         if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5))
 444                 return false;
 445
 446         return true;
 447 }
 448
 449 static const struct regmap_config tps6586x_regmap_config = {
 450         .reg_bits = 8,
 451         .val_bits = 8,
 452         .max_register = TPS6586X_MAX_REGISTER - 1,
 453         .volatile_reg = is_volatile_reg,
 454         .cache_type = REGCACHE_RBTREE,
 455 };
 456
 457 static int __devinit tps6586x_i2c_probe(struct i2c_client *client,
 458                                         const struct i2c_device_id *id)
 459 {
 460         struct tps6586x_platform_data *pdata = client->dev.platform_data;
 461         struct tps6586x *tps6586x;
 462         int ret;
 463
 464         if (!pdata && client->dev.of_node)
 465                 pdata = tps6586x_parse_dt(client);
 466
 467         if (!pdata) {
 468                 dev_err(&client->dev, "tps6586x requires platform data\n");
 469                 return -ENOTSUPP;
 470         }
 471
 472         ret = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC);
 473         if (ret < 0) {
 474                 dev_err(&client->dev, "Chip ID read failed: %d\n", ret);
 475                 return -EIO;
 476         }
 477
 478         dev_info(&client->dev, "VERSIONCRC is %02x\n", ret);
 479
 480         tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL);
 481         if (tps6586x == NULL) {
 482                 dev_err(&client->dev, "memory for tps6586x alloc failed\n");
 483                 return -ENOMEM;
 484         }
 485
 486         tps6586x->client = client;
 487         tps6586x->dev = &client->dev;
 488         i2c_set_clientdata(client, tps6586x);
 489
 490         tps6586x->regmap = devm_regmap_init_i2c(client,
 491                                         &tps6586x_regmap_config);
 492         if (IS_ERR(tps6586x->regmap)) {
 493                 ret = PTR_ERR(tps6586x->regmap);
 494                 dev_err(&client->dev, "regmap init failed: %d\n", ret);
 495                 return ret;
 496         }
 497
 498
 499         if (client->irq) {
 500                 ret = tps6586x_irq_init(tps6586x, client->irq,
 501                                         pdata->irq_base);
 502                 if (ret) {
 503                         dev_err(&client->dev, "IRQ init failed: %d\n", ret);
 504                         return ret;
 505                 }
 506         }
 507
 508         ret = mfd_add_devices(tps6586x->dev, -1,
 509                               tps6586x_cell, ARRAY_SIZE(tps6586x_cell),
 510                               NULL, 0, NULL);
 511         if (ret < 0) {
 512                 dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
 513                 goto err_mfd_add;
 514         }
 515
 516         ret = tps6586x_add_subdevs(tps6586x, pdata);
 517         if (ret) {
 518                 dev_err(&client->dev, "add devices failed: %d\n", ret);
 519                 goto err_add_devs;
 520         }
 521
 522         return 0;
 523
 524 err_add_devs:
 525         mfd_remove_devices(tps6586x->dev);
 526 err_mfd_add:
 527         if (client->irq)
 528                 free_irq(client->irq, tps6586x);
 529         return ret;
 530 }
 531
 532 static int __devexit tps6586x_i2c_remove(struct i2c_client *client)
 533 {
 534         struct tps6586x *tps6586x = i2c_get_clientdata(client);
 535
 536         tps6586x_remove_subdevs(tps6586x);
 537         mfd_remove_devices(tps6586x->dev);
 538         if (client->irq)
 539                 free_irq(client->irq, tps6586x);
 540         return 0;
 541 }
 542
 543 static const struct i2c_device_id tps6586x_id_table[] = {
 544         { "tps6586x", 0 },
 545         { },
 546 };
 547 MODULE_DEVICE_TABLE(i2c, tps6586x_id_table);
 548
 549 static struct i2c_driver tps6586x_driver = {
 550         .driver = {
 551                 .name   = "tps6586x",
 552                 .owner  = THIS_MODULE,
 553                 .of_match_table = of_match_ptr(tps6586x_of_match),
 554         },
 555         .probe          = tps6586x_i2c_probe,
 556         .remove         = __devexit_p(tps6586x_i2c_remove),
 557         .id_table       = tps6586x_id_table,
 558 };
 559
 560 static int __init tps6586x_init(void)
 561 {
 562         return i2c_add_driver(&tps6586x_driver);
 563 }
 564 subsys_initcall(tps6586x_init);
 565
 566 static void __exit tps6586x_exit(void)
 567 {
 568         i2c_del_driver(&tps6586x_driver);
 569 }
 570 module_exit(tps6586x_exit);
 571
 572 MODULE_DESCRIPTION("TPS6586X core driver");
 573 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
 574 MODULE_LICENSE("GPL");