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 #include <linux/of.h>
  30
  31 #include <linux/mfd/core.h>
  32 #include <linux/mfd/tps6586x.h>
  33
  34 #define TPS6586X_SUPPLYENE      0x14
  35 #define EXITSLREQ_BIT           BIT(1)
  36 #define SLEEP_MODE_BIT          BIT(3)
  37
  38 /* interrupt control registers */
  39 #define TPS6586X_INT_ACK1       0xb5
  40 #define TPS6586X_INT_ACK2       0xb6
  41 #define TPS6586X_INT_ACK3       0xb7
  42 #define TPS6586X_INT_ACK4       0xb8
  43
  44 /* interrupt mask registers */
  45 #define TPS6586X_INT_MASK1      0xb0
  46 #define TPS6586X_INT_MASK2      0xb1
  47 #define TPS6586X_INT_MASK3      0xb2
  48 #define TPS6586X_INT_MASK4      0xb3
  49 #define TPS6586X_INT_MASK5      0xb4
  50
  51 /* device id */
  52 #define TPS6586X_VERSIONCRC     0xcd
  53
  54 /* Maximum register */
  55 #define TPS6586X_MAX_REGISTER   (TPS6586X_VERSIONCRC + 1)
  56
  57 struct tps6586x_irq_data {
  58         u8      mask_reg;
  59         u8      mask_mask;
  60 };
  61
  62 #define TPS6586X_IRQ(_reg, _mask)                               \
  63         {                                                       \
  64                 .mask_reg = (_reg) - TPS6586X_INT_MASK1,        \
  65                 .mask_mask = (_mask),                           \
  66         }
  67
  68 static const struct tps6586x_irq_data tps6586x_irqs[] = {
  69         [TPS6586X_INT_PLDO_0]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0),
  70         [TPS6586X_INT_PLDO_1]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1),
  71         [TPS6586X_INT_PLDO_2]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2),
  72         [TPS6586X_INT_PLDO_3]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3),
  73         [TPS6586X_INT_PLDO_4]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4),
  74         [TPS6586X_INT_PLDO_5]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5),
  75         [TPS6586X_INT_PLDO_6]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6),
  76         [TPS6586X_INT_PLDO_7]   = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7),
  77         [TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0),
  78         [TPS6586X_INT_ADC]      = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1),
  79         [TPS6586X_INT_PLDO_8]   = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2),
  80         [TPS6586X_INT_PLDO_9]   = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3),
  81         [TPS6586X_INT_PSM_0]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4),
  82         [TPS6586X_INT_PSM_1]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5),
  83         [TPS6586X_INT_PSM_2]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6),
  84         [TPS6586X_INT_PSM_3]    = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7),
  85         [TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4),
  86         [TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03),
  87         [TPS6586X_INT_USB_DET]  = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2),
  88         [TPS6586X_INT_AC_DET]   = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3),
  89         [TPS6586X_INT_BAT_DET]  = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0),
  90         [TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc),
  91         [TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06),
  92         [TPS6586X_INT_PP]       = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0),
  93         [TPS6586X_INT_RESUME]   = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5),
  94         [TPS6586X_INT_LOW_SYS]  = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6),
  95         [TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1),
  96 };
  97
  98 static struct resource tps6586x_rtc_resources[] = {
  99         {
 100                 .start  = TPS6586X_INT_RTC_ALM1,
 101                 .end    = TPS6586X_INT_RTC_ALM1,
 102                 .flags  = IORESOURCE_IRQ,
 103         },
 104 };
 105
 106 static struct mfd_cell tps6586x_cell[] = {
 107         {
 108                 .name = "tps6586x-gpio",
 109         },
 110         {
 111                 .name = "tps6586x-regulator",
 112         },
 113         {
 114                 .name = "tps6586x-rtc",
 115                 .num_resources = ARRAY_SIZE(tps6586x_rtc_resources),
 116                 .resources = &tps6586x_rtc_resources[0],
 117         },
 118         {
 119                 .name = "tps6586x-onkey",
 120         },
 121 };
 122
 123 struct tps6586x {
 124         struct device           *dev;
 125         struct i2c_client       *client;
 126         struct regmap           *regmap;
 127
 128         int                     irq;
 129         struct irq_chip         irq_chip;
 130         struct mutex            irq_lock;
 131         int                     irq_base;
 132         u32                     irq_en;
 133         u8                      mask_reg[5];
 134         struct irq_domain       *irq_domain;
 135 };
 136
 137 static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
 138 {
 139         return i2c_get_clientdata(to_i2c_client(dev));
 140 }
 141
 142 int tps6586x_write(struct device *dev, int reg, uint8_t val)
 143 {
 144         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 145
 146         return regmap_write(tps6586x->regmap, reg, val);
 147 }
 148 EXPORT_SYMBOL_GPL(tps6586x_write);
 149
 150 int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val)
 151 {
 152         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 153
 154         return regmap_bulk_write(tps6586x->regmap, reg, val, len);
 155 }
 156 EXPORT_SYMBOL_GPL(tps6586x_writes);
 157
 158 int tps6586x_read(struct device *dev, int reg, uint8_t *val)
 159 {
 160         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 161         unsigned int rval;
 162         int ret;
 163
 164         ret = regmap_read(tps6586x->regmap, reg, &rval);
 165         if (!ret)
 166                 *val = rval;
 167         return ret;
 168 }
 169 EXPORT_SYMBOL_GPL(tps6586x_read);
 170
 171 int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val)
 172 {
 173         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 174
 175         return regmap_bulk_read(tps6586x->regmap, reg, val, len);
 176 }
 177 EXPORT_SYMBOL_GPL(tps6586x_reads);
 178
 179 int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
 180 {
 181         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 182
 183         return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask);
 184 }
 185 EXPORT_SYMBOL_GPL(tps6586x_set_bits);
 186
 187 int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
 188 {
 189         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 190
 191         return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0);
 192 }
 193 EXPORT_SYMBOL_GPL(tps6586x_clr_bits);
 194
 195 int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
 196 {
 197         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 198
 199         return regmap_update_bits(tps6586x->regmap, reg, mask, val);
 200 }
 201 EXPORT_SYMBOL_GPL(tps6586x_update);
 202
 203 int tps6586x_irq_get_virq(struct device *dev, int irq)
 204 {
 205         struct tps6586x *tps6586x = dev_to_tps6586x(dev);
 206
 207         return irq_create_mapping(tps6586x->irq_domain, irq);
 208 }
 209 EXPORT_SYMBOL_GPL(tps6586x_irq_get_virq);
 210
 211 static int __remove_subdev(struct device *dev, void *unused)
 212 {
 213         platform_device_unregister(to_platform_device(dev));
 214         return 0;
 215 }
 216
 217 static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
 218 {
 219         return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
 220 }
 221
 222 static void tps6586x_irq_lock(struct irq_data *data)
 223 {
 224         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
 225
 226         mutex_lock(&tps6586x->irq_lock);
 227 }
 228
 229 static void tps6586x_irq_enable(struct irq_data *irq_data)
 230 {
 231         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
 232         unsigned int __irq = irq_data->hwirq;
 233         const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
 234
 235         tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
 236         tps6586x->irq_en |= (1 << __irq);
 237 }
 238
 239 static void tps6586x_irq_disable(struct irq_data *irq_data)
 240 {
 241         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
 242
 243         unsigned int __irq = irq_data->hwirq;
 244         const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
 245
 246         tps6586x->mask_reg[data->mask_reg] |= data->mask_mask;
 247         tps6586x->irq_en &= ~(1 << __irq);
 248 }
 249
 250 static void tps6586x_irq_sync_unlock(struct irq_data *data)
 251 {
 252         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
 253         int i;
 254
 255         for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) {
 256                 int ret;
 257                 ret = tps6586x_write(tps6586x->dev,
 258                                             TPS6586X_INT_MASK1 + i,
 259                                             tps6586x->mask_reg[i]);
 260                 WARN_ON(ret);
 261         }
 262
 263         mutex_unlock(&tps6586x->irq_lock);
 264 }
 265
 266 #ifdef CONFIG_PM_SLEEP
 267 static int tps6586x_irq_set_wake(struct irq_data *irq_data, unsigned int on)
 268 {
 269         struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
 270         return irq_set_irq_wake(tps6586x->irq, on);
 271 }
 272 #else
 273 #define tps6586x_irq_set_wake NULL
 274 #endif
 275
 276 static struct irq_chip tps6586x_irq_chip = {
 277         .name = "tps6586x",
 278         .irq_bus_lock = tps6586x_irq_lock,
 279         .irq_bus_sync_unlock = tps6586x_irq_sync_unlock,
 280         .irq_disable = tps6586x_irq_disable,
 281         .irq_enable = tps6586x_irq_enable,
 282         .irq_set_wake = tps6586x_irq_set_wake,
 283 };
 284
 285 static int tps6586x_irq_map(struct irq_domain *h, unsigned int virq,
 286                                 irq_hw_number_t hw)
 287 {
 288         struct tps6586x *tps6586x = h->host_data;
 289
 290         irq_set_chip_data(virq, tps6586x);
 291         irq_set_chip_and_handler(virq, &tps6586x_irq_chip, handle_simple_irq);
 292         irq_set_nested_thread(virq, 1);
 293
 294         /* ARM needs us to explicitly flag the IRQ as valid
 295          * and will set them noprobe when we do so. */
 296 #ifdef CONFIG_ARM
 297         set_irq_flags(virq, IRQF_VALID);
 298 #else
 299         irq_set_noprobe(virq);
 300 #endif
 301
 302         return 0;
 303 }
 304
 305 static struct irq_domain_ops tps6586x_domain_ops = {
 306         .map    = tps6586x_irq_map,
 307         .xlate  = irq_domain_xlate_twocell,
 308 };
 309
 310 static irqreturn_t tps6586x_irq(int irq, void *data)
 311 {
 312         struct tps6586x *tps6586x = data;
 313         u32 acks;
 314         int ret = 0;
 315
 316         ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
 317                              sizeof(acks), (uint8_t *)&acks);
 318
 319         if (ret < 0) {
 320                 dev_err(tps6586x->dev, "failed to read interrupt status\n");
 321                 return IRQ_NONE;
 322         }
 323
 324         acks = le32_to_cpu(acks);
 325
 326         while (acks) {
 327                 int i = __ffs(acks);
 328
 329                 if (tps6586x->irq_en & (1 << i))
 330                         handle_nested_irq(
 331                                 irq_find_mapping(tps6586x->irq_domain, i));
 332
 333                 acks &= ~(1 << i);
 334         }
 335
 336         return IRQ_HANDLED;
 337 }
 338
 339 static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
 340                                        int irq_base)
 341 {
 342         int i, ret;
 343         u8 tmp[4];
 344         int new_irq_base;
 345         int irq_num = ARRAY_SIZE(tps6586x_irqs);
 346
 347         tps6586x->irq = irq;
 348
 349         mutex_init(&tps6586x->irq_lock);
 350         for (i = 0; i < 5; i++) {
 351                 tps6586x->mask_reg[i] = 0xff;
 352                 tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
 353         }
 354
 355         tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
 356
 357         if  (irq_base > 0) {
 358                 new_irq_base = irq_alloc_descs(irq_base, 0, irq_num, -1);
 359                 if (new_irq_base < 0) {
 360                         dev_err(tps6586x->dev,
 361                                 "Failed to alloc IRQs: %d\n", new_irq_base);
 362                         return new_irq_base;
 363                 }
 364         } else {
 365                 new_irq_base = 0;
 366         }
 367
 368         tps6586x->irq_domain = irq_domain_add_simple(tps6586x->dev->of_node,
 369                                 irq_num, new_irq_base, &tps6586x_domain_ops,
 370                                 tps6586x);
 371         if (!tps6586x->irq_domain) {
 372                 dev_err(tps6586x->dev, "Failed to create IRQ domain\n");
 373                 return -ENOMEM;
 374         }
 375         ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
 376                                    "tps6586x", tps6586x);
 377
 378         if (!ret)
 379                 device_init_wakeup(tps6586x->dev, 1);
 380
 381         return ret;
 382 }
 383
 384 static int tps6586x_add_subdevs(struct tps6586x *tps6586x,
 385                                           struct tps6586x_platform_data *pdata)
 386 {
 387         struct tps6586x_subdev_info *subdev;
 388         struct platform_device *pdev;
 389         int i, ret = 0;
 390
 391         for (i = 0; i < pdata->num_subdevs; i++) {
 392                 subdev = &pdata->subdevs[i];
 393
 394                 pdev = platform_device_alloc(subdev->name, subdev->id);
 395                 if (!pdev) {
 396                         ret = -ENOMEM;
 397                         goto failed;
 398                 }
 399
 400                 pdev->dev.parent = tps6586x->dev;
 401                 pdev->dev.platform_data = subdev->platform_data;
 402                 pdev->dev.of_node = subdev->of_node;
 403
 404                 ret = platform_device_add(pdev);
 405                 if (ret) {
 406                         platform_device_put(pdev);
 407                         goto failed;
 408                 }
 409         }
 410         return 0;
 411
 412 failed:
 413         tps6586x_remove_subdevs(tps6586x);
 414         return ret;
 415 }
 416
 417 #ifdef CONFIG_OF
 418 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
 419 {
 420         struct device_node *np = client->dev.of_node;
 421         struct tps6586x_platform_data *pdata;
 422
 423         pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
 424         if (!pdata) {
 425                 dev_err(&client->dev, "Memory allocation failed\n");
 426                 return NULL;
 427         }
 428
 429         pdata->num_subdevs = 0;
 430         pdata->subdevs = NULL;
 431         pdata->gpio_base = -1;
 432         pdata->irq_base = -1;
 433         pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller");
 434
 435         return pdata;
 436 }
 437
 438 static struct of_device_id tps6586x_of_match[] = {
 439         { .compatible = "ti,tps6586x", },
 440         { },
 441 };
 442 #else
 443 static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
 444 {
 445         return NULL;
 446 }
 447 #endif
 448
 449 static bool is_volatile_reg(struct device *dev, unsigned int reg)
 450 {
 451         /* Cache all interrupt mask register */
 452         if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5))
 453                 return false;
 454
 455         return true;
 456 }
 457
 458 static const struct regmap_config tps6586x_regmap_config = {
 459         .reg_bits = 8,
 460         .val_bits = 8,
 461         .max_register = TPS6586X_MAX_REGISTER - 1,
 462         .volatile_reg = is_volatile_reg,
 463         .cache_type = REGCACHE_RBTREE,
 464 };
 465
 466 static struct device *tps6586x_dev;
 467 static void tps6586x_power_off(void)
 468 {
 469         if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT))
 470                 return;
 471
 472         tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT);
 473 }
 474
 475 static int tps6586x_i2c_probe(struct i2c_client *client,
 476                                         const struct i2c_device_id *id)
 477 {
 478         struct tps6586x_platform_data *pdata = dev_get_platdata(&client->dev);
 479         struct tps6586x *tps6586x;
 480         int ret;
 481
 482         if (!pdata && client->dev.of_node)
 483                 pdata = tps6586x_parse_dt(client);
 484
 485         if (!pdata) {
 486                 dev_err(&client->dev, "tps6586x requires platform data\n");
 487                 return -ENOTSUPP;
 488         }
 489
 490         ret = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC);
 491         if (ret < 0) {
 492                 dev_err(&client->dev, "Chip ID read failed: %d\n", ret);
 493                 return -EIO;
 494         }
 495
 496         dev_info(&client->dev, "VERSIONCRC is %02x\n", ret);
 497
 498         tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL);
 499         if (tps6586x == NULL) {
 500                 dev_err(&client->dev, "memory for tps6586x alloc failed\n");
 501                 return -ENOMEM;
 502         }
 503
 504         tps6586x->client = client;
 505         tps6586x->dev = &client->dev;
 506         i2c_set_clientdata(client, tps6586x);
 507
 508         tps6586x->regmap = devm_regmap_init_i2c(client,
 509                                         &tps6586x_regmap_config);
 510         if (IS_ERR(tps6586x->regmap)) {
 511                 ret = PTR_ERR(tps6586x->regmap);
 512                 dev_err(&client->dev, "regmap init failed: %d\n", ret);
 513                 return ret;
 514         }
 515
 516
 517         if (client->irq) {
 518                 ret = tps6586x_irq_init(tps6586x, client->irq,
 519                                         pdata->irq_base);
 520                 if (ret) {
 521                         dev_err(&client->dev, "IRQ init failed: %d\n", ret);
 522                         return ret;
 523                 }
 524         }
 525
 526         ret = mfd_add_devices(tps6586x->dev, -1,
 527                               tps6586x_cell, ARRAY_SIZE(tps6586x_cell),
 528                               NULL, 0, tps6586x->irq_domain);
 529         if (ret < 0) {
 530                 dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
 531                 goto err_mfd_add;
 532         }
 533
 534         ret = tps6586x_add_subdevs(tps6586x, pdata);
 535         if (ret) {
 536                 dev_err(&client->dev, "add devices failed: %d\n", ret);
 537                 goto err_add_devs;
 538         }
 539
 540         if (pdata->pm_off && !pm_power_off) {
 541                 tps6586x_dev = &client->dev;
 542                 pm_power_off = tps6586x_power_off;
 543         }
 544
 545         return 0;
 546
 547 err_add_devs:
 548         mfd_remove_devices(tps6586x->dev);
 549 err_mfd_add:
 550         if (client->irq)
 551                 free_irq(client->irq, tps6586x);
 552         return ret;
 553 }
 554
 555 static int tps6586x_i2c_remove(struct i2c_client *client)
 556 {
 557         struct tps6586x *tps6586x = i2c_get_clientdata(client);
 558
 559         tps6586x_remove_subdevs(tps6586x);
 560         mfd_remove_devices(tps6586x->dev);
 561         if (client->irq)
 562                 free_irq(client->irq, tps6586x);
 563         return 0;
 564 }
 565
 566 static const struct i2c_device_id tps6586x_id_table[] = {
 567         { "tps6586x", 0 },
 568         { },
 569 };
 570 MODULE_DEVICE_TABLE(i2c, tps6586x_id_table);
 571
 572 static struct i2c_driver tps6586x_driver = {
 573         .driver = {
 574                 .name   = "tps6586x",
 575                 .owner  = THIS_MODULE,
 576                 .of_match_table = of_match_ptr(tps6586x_of_match),
 577         },
 578         .probe          = tps6586x_i2c_probe,
 579         .remove         = tps6586x_i2c_remove,
 580         .id_table       = tps6586x_id_table,
 581 };
 582
 583 static int __init tps6586x_init(void)
 584 {
 585         return i2c_add_driver(&tps6586x_driver);
 586 }
 587 subsys_initcall(tps6586x_init);
 588
 589 static void __exit tps6586x_exit(void)
 590 {
 591         i2c_del_driver(&tps6586x_driver);
 592 }
 593 module_exit(tps6586x_exit);
 594
 595 MODULE_DESCRIPTION("TPS6586X core driver");
 596 MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
 597 MODULE_LICENSE("GPL");