drivers/regulator/da9121-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // DA9121 Single-channel dual-phase 10A buck converter
   4 //
   5 // Copyright (C) 2020 Axis Communications AB
   6 //
   7 // DA9130 Single-channel dual-phase 10A buck converter (Automotive)
   8 // DA9217 Single-channel dual-phase  6A buck converter
   9 // DA9122 Dual-channel single-phase  5A buck converter
  10 // DA9131 Dual-channel single-phase  5A buck converter (Automotive)
  11 // DA9220 Dual-channel single-phase  3A buck converter
  12 // DA9132 Dual-channel single-phase  3A buck converter (Automotive)
  13 //
  14 // Copyright (C) 2020 Dialog Semiconductor
  15
  16 #include <linux/of_device.h>
  17 #include <linux/of_gpio.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <linux/regulator/of_regulator.h>
  20 #include <linux/regulator/machine.h>
  21 #include <linux/regulator/driver.h>
  22 #include <linux/module.h>
  23 #include <linux/regmap.h>
  24 #include <linux/err.h>
  25 #include <linux/i2c.h>
  26 #include <linux/regulator/da9121.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/workqueue.h>
  29
  30 #include "da9121-regulator.h"
  31
  32 /* Chip data */
  33 struct da9121 {
  34         struct device *dev;
  35         struct delayed_work work;
  36         struct da9121_pdata *pdata;
  37         struct regmap *regmap;
  38         struct regulator_dev *rdev[DA9121_IDX_MAX];
  39         unsigned int persistent[2];
  40         unsigned int passive_delay;
  41         int chip_irq;
  42         int variant_id;
  43         int subvariant_id;
  44 };
  45
  46 /* Define ranges for different variants, enabling translation to/from
  47  * registers. Maximums give scope to allow for transients.
  48  */
  49 struct da9121_range {
  50         int val_min;
  51         int val_max;
  52         int val_stp;
  53         int reg_min;
  54         int reg_max;
  55 };
  56
  57 static struct da9121_range da9121_10A_2phase_current = {
  58         .val_min =  7000000,
  59         .val_max = 20000000,
  60         .val_stp =  1000000,
  61         .reg_min = 1,
  62         .reg_max = 14,
  63 };
  64
  65 static struct da9121_range da9121_6A_2phase_current = {
  66         .val_min =  7000000,
  67         .val_max = 12000000,
  68         .val_stp =  1000000,
  69         .reg_min = 1,
  70         .reg_max = 6,
  71 };
  72
  73 static struct da9121_range da9121_5A_1phase_current = {
  74         .val_min =  3500000,
  75         .val_max = 10000000,
  76         .val_stp =   500000,
  77         .reg_min = 1,
  78         .reg_max = 14,
  79 };
  80
  81 static struct da9121_range da9121_3A_1phase_current = {
  82         .val_min = 3500000,
  83         .val_max = 6000000,
  84         .val_stp =  500000,
  85         .reg_min = 1,
  86         .reg_max = 6,
  87 };
  88
  89 struct da9121_variant_info {
  90         int num_bucks;
  91         int num_phases;
  92         struct da9121_range *current_range;
  93 };
  94
  95 static const struct da9121_variant_info variant_parameters[] = {
  96         { 1, 2, &da9121_10A_2phase_current },   //DA9121_TYPE_DA9121_DA9130
  97         { 2, 1, &da9121_3A_1phase_current  },   //DA9121_TYPE_DA9220_DA9132
  98         { 2, 1, &da9121_5A_1phase_current  },   //DA9121_TYPE_DA9122_DA9131
  99         { 1, 2, &da9121_6A_2phase_current  },   //DA9121_TYPE_DA9217
 100 };
 101
 102 struct da9121_field {
 103         unsigned int reg;
 104         unsigned int msk;
 105 };
 106
 107 static const struct da9121_field da9121_current_field[2] = {
 108         { DA9121_REG_BUCK_BUCK1_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM },
 109         { DA9xxx_REG_BUCK_BUCK2_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM },
 110 };
 111
 112 static const struct da9121_field da9121_mode_field[2] = {
 113         { DA9121_REG_BUCK_BUCK1_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE },
 114         { DA9xxx_REG_BUCK_BUCK2_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE },
 115 };
 116
 117 struct status_event_data {
 118         int buck_id; /* 0=core, 1/2-buck */
 119         int reg_index;  /* index for status/event/mask register selection */
 120         int status_bit; /* bit masks... */
 121         int event_bit;
 122         int mask_bit;
 123         unsigned long notification; /* Notification for status inception */
 124         char *warn; /* if NULL, notify - otherwise dev_warn this string */
 125 };
 126
 127 #define DA9121_STATUS(id, bank, name, notification, warning) \
 128         { id, bank, \
 129         DA9121_MASK_SYS_STATUS_##bank##_##name, \
 130         DA9121_MASK_SYS_EVENT_##bank##_E_##name, \
 131         DA9121_MASK_SYS_MASK_##bank##_M_##name, \
 132         notification, warning }
 133
 134 /* For second buck related event bits that are specific to DA9122, DA9220 variants */
 135 #define DA9xxx_STATUS(id, bank, name, notification, warning) \
 136         { id, bank, \
 137         DA9xxx_MASK_SYS_STATUS_##bank##_##name, \
 138         DA9xxx_MASK_SYS_EVENT_##bank##_E_##name, \
 139         DA9xxx_MASK_SYS_MASK_##bank##_M_##name, \
 140         notification, warning }
 141
 142 /* The status signals that may need servicing, depending on device variant.
 143  * After assertion, they persist; so event is notified, the IRQ disabled,
 144  * and status polled until clear again and IRQ is reenabled.
 145  *
 146  * SG/PG1/PG2 should be set when device first powers up and should never
 147  * re-occur. When this driver starts, it is expected that these will have
 148  * self-cleared for when the IRQs are enabled, so these should never be seen.
 149  * If seen, the implication is that the device has reset.
 150  *
 151  * GPIO0/1/2 are not configured for use by default, so should not be seen.
 152  */
 153 static const struct status_event_data status_event_handling[] = {
 154         DA9xxx_STATUS(0, 0, SG, 0, "Handled E_SG\n"),
 155         DA9121_STATUS(0, 0, TEMP_CRIT, (REGULATOR_EVENT_OVER_TEMP|REGULATOR_EVENT_DISABLE), NULL),
 156         DA9121_STATUS(0, 0, TEMP_WARN, REGULATOR_EVENT_OVER_TEMP, NULL),
 157         DA9121_STATUS(1, 1, PG1, 0, "Handled E_PG1\n"),
 158         DA9121_STATUS(1, 1, OV1, REGULATOR_EVENT_REGULATION_OUT, NULL),
 159         DA9121_STATUS(1, 1, UV1, REGULATOR_EVENT_UNDER_VOLTAGE, NULL),
 160         DA9121_STATUS(1, 1, OC1, REGULATOR_EVENT_OVER_CURRENT, NULL),
 161         DA9xxx_STATUS(2, 1, PG2, 0, "Handled E_PG2\n"),
 162         DA9xxx_STATUS(2, 1, OV2, REGULATOR_EVENT_REGULATION_OUT, NULL),
 163         DA9xxx_STATUS(2, 1, UV2, REGULATOR_EVENT_UNDER_VOLTAGE, NULL),
 164         DA9xxx_STATUS(2, 1, OC2, REGULATOR_EVENT_OVER_CURRENT, NULL),
 165         DA9121_STATUS(0, 2, GPIO0, 0, "Handled E_GPIO0\n"),
 166         DA9121_STATUS(0, 2, GPIO1, 0, "Handled E_GPIO1\n"),
 167         DA9121_STATUS(0, 2, GPIO2, 0, "Handled E_GPIO2\n"),
 168 };
 169
 170 static int da9121_get_current_limit(struct regulator_dev *rdev)
 171 {
 172         struct da9121 *chip = rdev_get_drvdata(rdev);
 173         int id = rdev_get_id(rdev);
 174         struct da9121_range *range =
 175                 variant_parameters[chip->variant_id].current_range;
 176         unsigned int val = 0;
 177         int ret = 0;
 178
 179         ret = regmap_read(chip->regmap, da9121_current_field[id].reg, &val);
 180         if (ret < 0) {
 181                 dev_err(chip->dev, "Cannot read BUCK register: %d\n", ret);
 182                 goto error;
 183         }
 184
 185         if (val < range->reg_min) {
 186                 ret = -EACCES;
 187                 goto error;
 188         }
 189
 190         if (val > range->reg_max) {
 191                 ret = -EINVAL;
 192                 goto error;
 193         }
 194
 195         return range->val_min + (range->val_stp * (val - range->reg_min));
 196 error:
 197         return ret;
 198 }
 199
 200 static int da9121_ceiling_selector(struct regulator_dev *rdev,
 201                 int min, int max,
 202                 unsigned int *selector)
 203 {
 204         struct da9121 *chip = rdev_get_drvdata(rdev);
 205         struct da9121_range *range =
 206                 variant_parameters[chip->variant_id].current_range;
 207         unsigned int level;
 208         unsigned int i = 0;
 209         unsigned int sel = 0;
 210         int ret = 0;
 211
 212         if (range->val_min > max || range->val_max < min) {
 213                 dev_err(chip->dev,
 214                         "Requested current out of regulator capability\n");
 215                 ret = -EINVAL;
 216                 goto error;
 217         }
 218
 219         level = range->val_max;
 220         for (i = range->reg_max; i >= range->reg_min; i--) {
 221                 if (level <= max) {
 222                         sel = i;
 223                         break;
 224                 }
 225                 level -= range->val_stp;
 226         }
 227
 228         if (level < min) {
 229                 dev_err(chip->dev,
 230                         "Best match falls below minimum requested current\n");
 231                 ret = -EINVAL;
 232                 goto error;
 233         }
 234
 235         *selector = sel;
 236 error:
 237         return ret;
 238 }
 239
 240 static int da9121_set_current_limit(struct regulator_dev *rdev,
 241                                 int min_ua, int max_ua)
 242 {
 243         struct da9121 *chip = rdev_get_drvdata(rdev);
 244         int id = rdev_get_id(rdev);
 245         struct da9121_range *range =
 246                 variant_parameters[chip->variant_id].current_range;
 247         unsigned int sel = 0;
 248         int ret = 0;
 249
 250         if (min_ua < range->val_min ||
 251             max_ua > range->val_max) {
 252                 ret = -EINVAL;
 253                 goto error;
 254         }
 255
 256         ret = da9121_ceiling_selector(rdev, min_ua, max_ua, &sel);
 257         if (ret < 0)
 258                 goto error;
 259
 260         ret = regmap_update_bits(chip->regmap,
 261                                 da9121_current_field[id].reg,
 262                                 da9121_current_field[id].msk,
 263                                 (unsigned int)sel);
 264         if (ret < 0)
 265                 dev_err(chip->dev, "Cannot update BUCK current limit, err: %d\n", ret);
 266
 267 error:
 268         return ret;
 269 }
 270
 271 static unsigned int da9121_map_mode(unsigned int mode)
 272 {
 273         switch (mode) {
 274         case DA9121_BUCK_MODE_FORCE_PWM:
 275                 return REGULATOR_MODE_FAST;
 276         case DA9121_BUCK_MODE_FORCE_PWM_SHEDDING:
 277                 return REGULATOR_MODE_NORMAL;
 278         case DA9121_BUCK_MODE_AUTO:
 279                 return REGULATOR_MODE_IDLE;
 280         case DA9121_BUCK_MODE_FORCE_PFM:
 281                 return REGULATOR_MODE_STANDBY;
 282         default:
 283                 return -EINVAL;
 284         }
 285 }
 286
 287 static int da9121_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
 288 {
 289         struct da9121 *chip = rdev_get_drvdata(rdev);
 290         int id = rdev_get_id(rdev);
 291         unsigned int val;
 292
 293         switch (mode) {
 294         case REGULATOR_MODE_FAST:
 295                 val = DA9121_BUCK_MODE_FORCE_PWM;
 296                 break;
 297         case REGULATOR_MODE_NORMAL:
 298                 val = DA9121_BUCK_MODE_FORCE_PWM_SHEDDING;
 299                 break;
 300         case REGULATOR_MODE_IDLE:
 301                 val = DA9121_BUCK_MODE_AUTO;
 302                 break;
 303         case REGULATOR_MODE_STANDBY:
 304                 val = DA9121_BUCK_MODE_FORCE_PFM;
 305                 break;
 306         default:
 307                 return -EINVAL;
 308         }
 309
 310         return regmap_update_bits(chip->regmap,
 311                                   da9121_mode_field[id].reg,
 312                                   da9121_mode_field[id].msk,
 313                                   val);
 314 }
 315
 316 static unsigned int da9121_buck_get_mode(struct regulator_dev *rdev)
 317 {
 318         struct da9121 *chip = rdev_get_drvdata(rdev);
 319         int id = rdev_get_id(rdev);
 320         unsigned int val;
 321         int ret = 0;
 322
 323         ret = regmap_read(chip->regmap, da9121_mode_field[id].reg, &val);
 324         if (ret < 0) {
 325                 dev_err(chip->dev, "Cannot read BUCK register: %d\n", ret);
 326                 return -EINVAL;
 327         }
 328
 329         return da9121_map_mode(val & da9121_mode_field[id].msk);
 330 }
 331
 332 static const struct regulator_ops da9121_buck_ops = {
 333         .enable = regulator_enable_regmap,
 334         .disable = regulator_disable_regmap,
 335         .is_enabled = regulator_is_enabled_regmap,
 336         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 337         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 338         .list_voltage = regulator_list_voltage_linear,
 339         .get_current_limit = da9121_get_current_limit,
 340         .set_current_limit = da9121_set_current_limit,
 341         .set_mode = da9121_buck_set_mode,
 342         .get_mode = da9121_buck_get_mode,
 343 };
 344
 345 static struct of_regulator_match da9121_matches[] = {
 346         [DA9121_IDX_BUCK1] = { .name = "buck1" },
 347         [DA9121_IDX_BUCK2] = { .name = "buck2" },
 348 };
 349
 350 static int da9121_of_parse_cb(struct device_node *np,
 351                                 const struct regulator_desc *desc,
 352                                 struct regulator_config *config)
 353 {
 354         struct da9121 *chip = config->driver_data;
 355         struct da9121_pdata *pdata;
 356         struct gpio_desc *ena_gpiod;
 357
 358         if (chip->pdata == NULL) {
 359                 pdata = devm_kzalloc(chip->dev, sizeof(*pdata), GFP_KERNEL);
 360                 if (!pdata)
 361                         return -ENOMEM;
 362         } else {
 363                 pdata = chip->pdata;
 364         }
 365
 366         pdata->num_buck++;
 367
 368         if (pdata->num_buck > variant_parameters[chip->variant_id].num_bucks) {
 369                 dev_err(chip->dev, "Error: excessive regulators for device\n");
 370                 return -ENODEV;
 371         }
 372
 373         ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(np), "enable", 0,
 374                                                 GPIOD_OUT_HIGH |
 375                                                 GPIOD_FLAGS_BIT_NONEXCLUSIVE,
 376                                                 "da9121-enable");
 377         if (!IS_ERR(ena_gpiod))
 378                 config->ena_gpiod = ena_gpiod;
 379
 380         if (variant_parameters[chip->variant_id].num_bucks == 2) {
 381                 uint32_t ripple_cancel;
 382                 uint32_t ripple_reg;
 383                 int ret;
 384
 385                 if (of_property_read_u32(da9121_matches[pdata->num_buck-1].of_node,
 386                                 "dlg,ripple-cancel", &ripple_cancel)) {
 387                         if (pdata->num_buck > 1)
 388                                 ripple_reg = DA9xxx_REG_BUCK_BUCK2_7;
 389                         else
 390                                 ripple_reg = DA9121_REG_BUCK_BUCK1_7;
 391
 392                         ret = regmap_update_bits(chip->regmap, ripple_reg,
 393                                 DA9xxx_MASK_BUCK_BUCKx_7_CHx_RIPPLE_CANCEL,
 394                                 ripple_cancel);
 395                         if (ret < 0)
 396                                 dev_err(chip->dev, "Cannot set ripple mode, err: %d\n", ret);
 397                 }
 398         }
 399
 400         return 0;
 401 }
 402
 403 #define DA9121_MIN_MV           300
 404 #define DA9121_MAX_MV           1900
 405 #define DA9121_STEP_MV          10
 406 #define DA9121_MIN_SEL          (DA9121_MIN_MV / DA9121_STEP_MV)
 407 #define DA9121_N_VOLTAGES       (((DA9121_MAX_MV - DA9121_MIN_MV) / DA9121_STEP_MV) \
 408                                  + 1 + DA9121_MIN_SEL)
 409
 410 static const struct regulator_desc da9121_reg = {
 411         .id = DA9121_IDX_BUCK1,
 412         .name = "da9121",
 413         .of_match = "buck1",
 414         .of_parse_cb = da9121_of_parse_cb,
 415         .owner = THIS_MODULE,
 416         .regulators_node = of_match_ptr("regulators"),
 417         .of_map_mode = da9121_map_mode,
 418         .ops = &da9121_buck_ops,
 419         .type = REGULATOR_VOLTAGE,
 420         .n_voltages = DA9121_N_VOLTAGES,
 421         .min_uV = DA9121_MIN_MV * 1000,
 422         .uV_step = DA9121_STEP_MV * 1000,
 423         .linear_min_sel = DA9121_MIN_SEL,
 424         .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
 425         .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
 426         .enable_reg = DA9121_REG_BUCK_BUCK1_0,
 427         .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
 428         /* Default value of BUCK_BUCK1_0.CH1_SRC_DVC_UP */
 429         .ramp_delay = 20000,
 430         /* tBUCK_EN */
 431         .enable_time = 20,
 432 };
 433
 434 static const struct regulator_desc da9220_reg[2] = {
 435         {
 436                 .id = DA9121_IDX_BUCK1,
 437                 .name = "DA9220/DA9132 BUCK1",
 438                 .of_match = "buck1",
 439                 .of_parse_cb = da9121_of_parse_cb,
 440                 .owner = THIS_MODULE,
 441                 .regulators_node = of_match_ptr("regulators"),
 442                 .of_map_mode = da9121_map_mode,
 443                 .ops = &da9121_buck_ops,
 444                 .type = REGULATOR_VOLTAGE,
 445                 .n_voltages = DA9121_N_VOLTAGES,
 446                 .min_uV = DA9121_MIN_MV * 1000,
 447                 .uV_step = DA9121_STEP_MV * 1000,
 448                 .linear_min_sel = DA9121_MIN_SEL,
 449                 .enable_reg = DA9121_REG_BUCK_BUCK1_0,
 450                 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
 451                 .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
 452                 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
 453         },
 454         {
 455                 .id = DA9121_IDX_BUCK2,
 456                 .name = "DA9220/DA9132 BUCK2",
 457                 .of_match = "buck2",
 458                 .of_parse_cb = da9121_of_parse_cb,
 459                 .owner = THIS_MODULE,
 460                 .regulators_node = of_match_ptr("regulators"),
 461                 .of_map_mode = da9121_map_mode,
 462                 .ops = &da9121_buck_ops,
 463                 .type = REGULATOR_VOLTAGE,
 464                 .n_voltages = DA9121_N_VOLTAGES,
 465                 .min_uV = DA9121_MIN_MV * 1000,
 466                 .uV_step = DA9121_STEP_MV * 1000,
 467                 .linear_min_sel = DA9121_MIN_SEL,
 468                 .enable_reg = DA9xxx_REG_BUCK_BUCK2_0,
 469                 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
 470                 .vsel_reg = DA9xxx_REG_BUCK_BUCK2_5,
 471                 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
 472         }
 473 };
 474
 475 static const struct regulator_desc da9122_reg[2] = {
 476         {
 477                 .id = DA9121_IDX_BUCK1,
 478                 .name = "DA9122/DA9131 BUCK1",
 479                 .of_match = "buck1",
 480                 .of_parse_cb = da9121_of_parse_cb,
 481                 .owner = THIS_MODULE,
 482                 .regulators_node = of_match_ptr("regulators"),
 483                 .of_map_mode = da9121_map_mode,
 484                 .ops = &da9121_buck_ops,
 485                 .type = REGULATOR_VOLTAGE,
 486                 .n_voltages = DA9121_N_VOLTAGES,
 487                 .min_uV = DA9121_MIN_MV * 1000,
 488                 .uV_step = DA9121_STEP_MV * 1000,
 489                 .linear_min_sel = DA9121_MIN_SEL,
 490                 .enable_reg = DA9121_REG_BUCK_BUCK1_0,
 491                 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
 492                 .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
 493                 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
 494         },
 495         {
 496                 .id = DA9121_IDX_BUCK2,
 497                 .name = "DA9122/DA9131 BUCK2",
 498                 .of_match = "buck2",
 499                 .of_parse_cb = da9121_of_parse_cb,
 500                 .owner = THIS_MODULE,
 501                 .regulators_node = of_match_ptr("regulators"),
 502                 .of_map_mode = da9121_map_mode,
 503                 .ops = &da9121_buck_ops,
 504                 .type = REGULATOR_VOLTAGE,
 505                 .n_voltages = DA9121_N_VOLTAGES,
 506                 .min_uV = DA9121_MIN_MV * 1000,
 507                 .uV_step = DA9121_STEP_MV * 1000,
 508                 .linear_min_sel = DA9121_MIN_SEL,
 509                 .enable_reg = DA9xxx_REG_BUCK_BUCK2_0,
 510                 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
 511                 .vsel_reg = DA9xxx_REG_BUCK_BUCK2_5,
 512                 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
 513         }
 514 };
 515
 516 static const struct regulator_desc da9217_reg = {
 517         .id = DA9121_IDX_BUCK1,
 518         .name = "DA9217 BUCK1",
 519         .of_match = "buck1",
 520         .of_parse_cb = da9121_of_parse_cb,
 521         .owner = THIS_MODULE,
 522         .regulators_node = of_match_ptr("regulators"),
 523         .of_map_mode = da9121_map_mode,
 524         .ops = &da9121_buck_ops,
 525         .type = REGULATOR_VOLTAGE,
 526         .n_voltages = DA9121_N_VOLTAGES,
 527         .min_uV = DA9121_MIN_MV * 1000,
 528         .uV_step = DA9121_STEP_MV * 1000,
 529         .linear_min_sel = DA9121_MIN_SEL,
 530         .enable_reg = DA9121_REG_BUCK_BUCK1_0,
 531         .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
 532         .vsel_reg = DA9121_REG_BUCK_BUCK1_5,
 533         .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
 534 };
 535
 536 static const struct regulator_desc *local_da9121_regulators[][DA9121_IDX_MAX] = {
 537         [DA9121_TYPE_DA9121_DA9130] = { &da9121_reg, NULL },
 538         [DA9121_TYPE_DA9220_DA9132] = { &da9220_reg[0], &da9220_reg[1] },
 539         [DA9121_TYPE_DA9122_DA9131] = { &da9122_reg[0], &da9122_reg[1] },
 540         [DA9121_TYPE_DA9217] = { &da9217_reg, NULL },
 541 };
 542
 543 static void da9121_status_poll_on(struct work_struct *work)
 544 {
 545         struct da9121 *chip = container_of(work, struct da9121, work.work);
 546         int status[3] = {0};
 547         int clear[3] = {0};
 548         unsigned long delay;
 549         int i;
 550         int ret;
 551
 552         ret = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_STATUS_0, status, 2);
 553         if (ret < 0) {
 554                 dev_err(chip->dev,
 555                         "Failed to read STATUS registers: %d\n", ret);
 556                 goto error;
 557         }
 558
 559         /* Possible events are tested to be within range for the variant, potentially
 560          * masked by the IRQ handler (not just warned about), as having been masked,
 561          * and the respective state cleared - then flagged to unmask for next IRQ.
 562          */
 563         for (i = 0; i < ARRAY_SIZE(status_event_handling); i++) {
 564                 const struct status_event_data *item = &status_event_handling[i];
 565                 int reg_idx = item->reg_index;
 566                 bool relevant = (item->buck_id <= variant_parameters[chip->variant_id].num_bucks);
 567                 bool supported = (item->warn == NULL);
 568                 bool persisting = (chip->persistent[reg_idx] & item->event_bit);
 569                 bool now_cleared = !(status[reg_idx] & item->status_bit);
 570
 571                 if (relevant && supported && persisting && now_cleared) {
 572                         clear[reg_idx] |= item->mask_bit;
 573                         chip->persistent[reg_idx] &= ~item->event_bit;
 574                 }
 575         }
 576
 577         for (i = 0; i < 2; i++) {
 578                 if (clear[i]) {
 579                         unsigned int reg = DA9121_REG_SYS_MASK_0 + i;
 580                         unsigned int mbit = clear[i];
 581
 582                         ret = regmap_update_bits(chip->regmap, reg, mbit, 0);
 583                         if (ret < 0) {
 584                                 dev_err(chip->dev,
 585                                         "Failed to unmask 0x%02x %d\n",
 586                                         reg, ret);
 587                                 goto error;
 588                         }
 589                 }
 590         }
 591
 592         if (chip->persistent[0] | chip->persistent[1]) {
 593                 delay = msecs_to_jiffies(chip->passive_delay);
 594                 queue_delayed_work(system_freezable_wq, &chip->work, delay);
 595         }
 596
 597 error:
 598         return;
 599 }
 600
 601 static irqreturn_t da9121_irq_handler(int irq, void *data)
 602 {
 603         struct da9121 *chip = data;
 604         struct regulator_dev *rdev;
 605         int event[3] = {0};
 606         int handled[3] = {0};
 607         int mask[3] = {0};
 608         int ret = IRQ_NONE;
 609         int i;
 610         int err;
 611
 612         err = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_EVENT_0, event, 3);
 613         if (err < 0) {
 614                 dev_err(chip->dev, "Failed to read EVENT registers %d\n", err);
 615                 ret = IRQ_NONE;
 616                 goto error;
 617         }
 618
 619         err = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_MASK_0, mask, 3);
 620         if (err < 0) {
 621                 dev_err(chip->dev,
 622                         "Failed to read MASK registers: %d\n", ret);
 623                 ret = IRQ_NONE;
 624                 goto error;
 625         }
 626
 627         rdev = chip->rdev[DA9121_IDX_BUCK1];
 628
 629         /* Possible events are tested to be within range for the variant, currently
 630          * enabled, and having triggered this IRQ. The event may then be notified,
 631          * or a warning given for unexpected events - those from device POR, and
 632          * currently unsupported GPIO configurations.
 633          */
 634         for (i = 0; i < ARRAY_SIZE(status_event_handling); i++) {
 635                 const struct status_event_data *item = &status_event_handling[i];
 636                 int reg_idx = item->reg_index;
 637                 bool relevant = (item->buck_id <= variant_parameters[chip->variant_id].num_bucks);
 638                 bool enabled = !(mask[reg_idx] & item->mask_bit);
 639                 bool active = (event[reg_idx] & item->event_bit);
 640                 bool notify = (item->warn == NULL);
 641
 642                 if (relevant && enabled && active) {
 643                         if (notify) {
 644                                 chip->persistent[reg_idx] |= item->event_bit;
 645                                 regulator_notifier_call_chain(rdev, item->notification, NULL);
 646                         } else {
 647                                 dev_warn(chip->dev, item->warn);
 648                                 handled[reg_idx] |= item->event_bit;
 649                                 ret = IRQ_HANDLED;
 650                         }
 651                 }
 652         }
 653
 654         for (i = 0; i < 3; i++) {
 655                 if (event[i] != handled[i]) {
 656                         dev_warn(chip->dev,
 657                                 "Unhandled event(s) in bank%d 0x%02x\n", i,
 658                                 event[i] ^ handled[i]);
 659                 }
 660         }
 661
 662         /* Mask the interrupts for persistent events OV, OC, UV, WARN, CRIT */
 663         for (i = 0; i < 2; i++) {
 664                 if (handled[i]) {
 665                         unsigned int reg = DA9121_REG_SYS_MASK_0 + i;
 666                         unsigned int mbit = handled[i];
 667
 668                         err = regmap_update_bits(chip->regmap, reg, mbit, mbit);
 669                         if (err < 0) {
 670                                 dev_err(chip->dev,
 671                                         "Failed to mask 0x%02x interrupt %d\n",
 672                                         reg, err);
 673                                 ret = IRQ_NONE;
 674                                 goto error;
 675                         }
 676                 }
 677         }
 678
 679         /* clear the events */
 680         if (handled[0] | handled[1] | handled[2]) {
 681                 err = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_EVENT_0, handled, 3);
 682                 if (err < 0) {
 683                         dev_err(chip->dev, "Fail to write EVENTs %d\n", err);
 684                         ret = IRQ_NONE;
 685                         goto error;
 686                 }
 687         }
 688
 689         queue_delayed_work(system_freezable_wq, &chip->work, 0);
 690 error:
 691         return ret;
 692 }
 693
 694 static int da9121_set_regulator_config(struct da9121 *chip)
 695 {
 696         struct regulator_config config = { };
 697         unsigned int max_matches = variant_parameters[chip->variant_id].num_bucks;
 698         int ret = 0;
 699         int i;
 700
 701         for (i = 0; i < max_matches; i++) {
 702                 const struct regulator_desc *regl_desc =
 703                         local_da9121_regulators[chip->variant_id][i];
 704
 705                 config.dev = chip->dev;
 706                 config.driver_data = chip;
 707                 config.regmap = chip->regmap;
 708
 709                 chip->rdev[i] = devm_regulator_register(chip->dev,
 710                                         regl_desc, &config);
 711                 if (IS_ERR(chip->rdev[i])) {
 712                         dev_err(chip->dev, "Failed to register regulator %s, %d/%d\n",
 713                                 regl_desc->name, (i+1), max_matches);
 714                         ret = PTR_ERR(chip->rdev[i]);
 715                         goto error;
 716                 }
 717         }
 718
 719 error:
 720         return ret;
 721 }
 722
 723 /* DA9121 chip register model */
 724 static const struct regmap_range da9121_1ch_readable_ranges[] = {
 725         regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3),
 726         regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
 727         regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
 728         regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_6),
 729         regmap_reg_range(DA9121_REG_OTP_DEVICE_ID, DA9121_REG_OTP_CONFIG_ID),
 730 };
 731
 732 static const struct regmap_access_table da9121_1ch_readable_table = {
 733         .yes_ranges = da9121_1ch_readable_ranges,
 734         .n_yes_ranges = ARRAY_SIZE(da9121_1ch_readable_ranges),
 735 };
 736
 737 static const struct regmap_range da9121_2ch_readable_ranges[] = {
 738         regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3),
 739         regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
 740         regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
 741         regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_7),
 742         regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_0, DA9xxx_REG_BUCK_BUCK2_7),
 743         regmap_reg_range(DA9121_REG_OTP_DEVICE_ID, DA9121_REG_OTP_CONFIG_ID),
 744 };
 745
 746 static const struct regmap_access_table da9121_2ch_readable_table = {
 747         .yes_ranges = da9121_2ch_readable_ranges,
 748         .n_yes_ranges = ARRAY_SIZE(da9121_2ch_readable_ranges),
 749 };
 750
 751 static const struct regmap_range da9121_1ch_writeable_ranges[] = {
 752         regmap_reg_range(DA9121_REG_SYS_EVENT_0, DA9121_REG_SYS_MASK_3),
 753         regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
 754         regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
 755         regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_2),
 756         regmap_reg_range(DA9121_REG_BUCK_BUCK1_4, DA9121_REG_BUCK_BUCK1_6),
 757 };
 758
 759 static const struct regmap_access_table da9121_1ch_writeable_table = {
 760         .yes_ranges = da9121_1ch_writeable_ranges,
 761         .n_yes_ranges = ARRAY_SIZE(da9121_1ch_writeable_ranges),
 762 };
 763
 764 static const struct regmap_range da9121_2ch_writeable_ranges[] = {
 765         regmap_reg_range(DA9121_REG_SYS_EVENT_0, DA9121_REG_SYS_MASK_3),
 766         regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
 767         regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
 768         regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_2),
 769         regmap_reg_range(DA9121_REG_BUCK_BUCK1_4, DA9121_REG_BUCK_BUCK1_7),
 770         regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_0, DA9xxx_REG_BUCK_BUCK2_2),
 771         regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_4, DA9xxx_REG_BUCK_BUCK2_7),
 772 };
 773
 774 static const struct regmap_access_table da9121_2ch_writeable_table = {
 775         .yes_ranges = da9121_2ch_writeable_ranges,
 776         .n_yes_ranges = ARRAY_SIZE(da9121_2ch_writeable_ranges),
 777 };
 778
 779
 780 static const struct regmap_range da9121_volatile_ranges[] = {
 781         regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_EVENT_2),
 782         regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
 783         regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_6),
 784 };
 785
 786 static const struct regmap_access_table da9121_volatile_table = {
 787         .yes_ranges = da9121_volatile_ranges,
 788         .n_yes_ranges = ARRAY_SIZE(da9121_volatile_ranges),
 789 };
 790
 791 /* DA9121 regmap config for 1 channel variants */
 792 static struct regmap_config da9121_1ch_regmap_config = {
 793         .reg_bits = 8,
 794         .val_bits = 8,
 795         .max_register = DA9121_REG_OTP_CONFIG_ID,
 796         .rd_table = &da9121_1ch_readable_table,
 797         .wr_table = &da9121_1ch_writeable_table,
 798         .volatile_table = &da9121_volatile_table,
 799         .cache_type = REGCACHE_RBTREE,
 800 };
 801
 802 /* DA9121 regmap config for 2 channel variants */
 803 static struct regmap_config da9121_2ch_regmap_config = {
 804         .reg_bits = 8,
 805         .val_bits = 8,
 806         .max_register = DA9121_REG_OTP_CONFIG_ID,
 807         .rd_table = &da9121_2ch_readable_table,
 808         .wr_table = &da9121_2ch_writeable_table,
 809         .volatile_table = &da9121_volatile_table,
 810         .cache_type = REGCACHE_RBTREE,
 811 };
 812
 813 static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip)
 814 {
 815         u32 device_id;
 816         u32 variant_id;
 817         u8 variant_mrc, variant_vrc;
 818         char *type;
 819         bool config_match = false;
 820         int ret = 0;
 821
 822         ret = regmap_read(chip->regmap, DA9121_REG_OTP_DEVICE_ID, &device_id);
 823         if (ret < 0) {
 824                 dev_err(chip->dev, "Cannot read device ID: %d\n", ret);
 825                 goto error;
 826         }
 827
 828         ret = regmap_read(chip->regmap, DA9121_REG_OTP_VARIANT_ID, &variant_id);
 829         if (ret < 0) {
 830                 dev_err(chip->dev, "Cannot read variant ID: %d\n", ret);
 831                 goto error;
 832         }
 833
 834         if (device_id != DA9121_DEVICE_ID) {
 835                 dev_err(chip->dev, "Invalid device ID: 0x%02x\n", device_id);
 836                 ret = -ENODEV;
 837                 goto error;
 838         }
 839
 840         variant_vrc = variant_id & DA9121_MASK_OTP_VARIANT_ID_VRC;
 841
 842         switch (chip->subvariant_id) {
 843         case DA9121_SUBTYPE_DA9121:
 844                 type = "DA9121";
 845                 config_match = (variant_vrc == DA9121_VARIANT_VRC);
 846                 break;
 847         case DA9121_SUBTYPE_DA9130:
 848                 type = "DA9130";
 849                 config_match = (variant_vrc == DA9130_VARIANT_VRC);
 850                 break;
 851         case DA9121_SUBTYPE_DA9220:
 852                 type = "DA9220";
 853                 config_match = (variant_vrc == DA9220_VARIANT_VRC);
 854                 break;
 855         case DA9121_SUBTYPE_DA9132:
 856                 type = "DA9132";
 857                 config_match = (variant_vrc == DA9132_VARIANT_VRC);
 858                 break;
 859         case DA9121_SUBTYPE_DA9122:
 860                 type = "DA9122";
 861                 config_match = (variant_vrc == DA9122_VARIANT_VRC);
 862                 break;
 863         case DA9121_SUBTYPE_DA9131:
 864                 type = "DA9131";
 865                 config_match = (variant_vrc == DA9131_VARIANT_VRC);
 866                 break;
 867         case DA9121_SUBTYPE_DA9217:
 868                 type = "DA9217";
 869                 config_match = (variant_vrc == DA9217_VARIANT_VRC);
 870                 break;
 871         default:
 872                 type = "Unknown";
 873                 break;
 874         }
 875
 876         dev_info(chip->dev,
 877                  "Device detected (device-ID: 0x%02X, var-ID: 0x%02X, %s)\n",
 878                  device_id, variant_id, type);
 879
 880         if (!config_match) {
 881                 dev_err(chip->dev, "Device tree configuration does not match detected device.\n");
 882                 ret = -EINVAL;
 883                 goto error;
 884         }
 885
 886         variant_mrc = (variant_id & DA9121_MASK_OTP_VARIANT_ID_MRC)
 887                         >> DA9121_SHIFT_OTP_VARIANT_ID_MRC;
 888
 889         if ((device_id == DA9121_DEVICE_ID) &&
 890             (variant_mrc < DA9121_VARIANT_MRC_BASE)) {
 891                 dev_err(chip->dev,
 892                         "Cannot support variant MRC: 0x%02X\n", variant_mrc);
 893                 ret = -EINVAL;
 894         }
 895 error:
 896         return ret;
 897 }
 898
 899 static int da9121_assign_chip_model(struct i2c_client *i2c,
 900                         struct da9121 *chip)
 901 {
 902         struct regmap_config *regmap;
 903         int ret = 0;
 904
 905         chip->dev = &i2c->dev;
 906
 907         /* Use configured subtype to select the regulator descriptor index and
 908          * register map, common to both consumer and automotive grade variants
 909          */
 910         switch (chip->subvariant_id) {
 911         case DA9121_SUBTYPE_DA9121:
 912         case DA9121_SUBTYPE_DA9130:
 913                 chip->variant_id = DA9121_TYPE_DA9121_DA9130;
 914                 regmap = &da9121_1ch_regmap_config;
 915                 break;
 916         case DA9121_SUBTYPE_DA9217:
 917                 chip->variant_id = DA9121_TYPE_DA9217;
 918                 regmap = &da9121_1ch_regmap_config;
 919                 break;
 920         case DA9121_SUBTYPE_DA9122:
 921         case DA9121_SUBTYPE_DA9131:
 922                 chip->variant_id = DA9121_TYPE_DA9122_DA9131;
 923                 regmap = &da9121_2ch_regmap_config;
 924                 break;
 925         case DA9121_SUBTYPE_DA9220:
 926         case DA9121_SUBTYPE_DA9132:
 927                 chip->variant_id = DA9121_TYPE_DA9220_DA9132;
 928                 regmap = &da9121_2ch_regmap_config;
 929                 break;
 930         }
 931
 932         /* Set these up for of_regulator_match call which may want .of_map_modes */
 933         da9121_matches[0].desc = local_da9121_regulators[chip->variant_id][0];
 934         da9121_matches[1].desc = local_da9121_regulators[chip->variant_id][1];
 935
 936         chip->regmap = devm_regmap_init_i2c(i2c, regmap);
 937         if (IS_ERR(chip->regmap)) {
 938                 ret = PTR_ERR(chip->regmap);
 939                 dev_err(chip->dev, "Failed to configure a register map: %d\n",
 940                         ret);
 941                 return ret;
 942         }
 943
 944         ret = da9121_check_device_type(i2c, chip);
 945
 946         return ret;
 947 }
 948
 949 static int da9121_config_irq(struct i2c_client *i2c,
 950                         struct da9121 *chip)
 951 {
 952         unsigned int p_delay = DA9121_DEFAULT_POLLING_PERIOD_MS;
 953         const int mask_all[4] = { 0, 0, 0xFF, 0xFF };
 954         int ret = 0;
 955
 956         chip->chip_irq = i2c->irq;
 957
 958         if (chip->chip_irq != 0) {
 959                 if (!of_property_read_u32(chip->dev->of_node,
 960                                           "dlg,irq-polling-delay-passive-ms",
 961                                           &p_delay)) {
 962                         if (p_delay < DA9121_MIN_POLLING_PERIOD_MS ||
 963                             p_delay > DA9121_MAX_POLLING_PERIOD_MS) {
 964                                 dev_warn(chip->dev,
 965                                          "Out-of-range polling period %d ms\n",
 966                                          p_delay);
 967                                 p_delay = DA9121_DEFAULT_POLLING_PERIOD_MS;
 968                         }
 969                 }
 970
 971                 chip->passive_delay = p_delay;
 972
 973                 ret = request_threaded_irq(chip->chip_irq, NULL,
 974                                         da9121_irq_handler,
 975                                         IRQF_TRIGGER_LOW|IRQF_ONESHOT,
 976                                         "da9121", chip);
 977                 if (ret != 0) {
 978                         dev_err(chip->dev, "Failed IRQ request: %d\n",
 979                                 chip->chip_irq);
 980                         goto error;
 981                 }
 982
 983                 ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
 984                 if (ret != 0) {
 985                         dev_err(chip->dev, "Failed to set IRQ masks: %d\n",
 986                                 ret);
 987                         goto regmap_error;
 988                 }
 989
 990                 INIT_DELAYED_WORK(&chip->work, da9121_status_poll_on);
 991                 dev_info(chip->dev, "Interrupt polling period set at %d ms\n",
 992                          chip->passive_delay);
 993         }
 994 error:
 995         return ret;
 996 regmap_error:
 997         free_irq(chip->chip_irq, chip);
 998         return ret;
 999 }
1000
1001 static const struct of_device_id da9121_dt_ids[] = {
1002         { .compatible = "dlg,da9121", .data = (void *) DA9121_SUBTYPE_DA9121 },
1003         { .compatible = "dlg,da9130", .data = (void *) DA9121_SUBTYPE_DA9130 },
1004         { .compatible = "dlg,da9217", .data = (void *) DA9121_SUBTYPE_DA9217 },
1005         { .compatible = "dlg,da9122", .data = (void *) DA9121_SUBTYPE_DA9122 },
1006         { .compatible = "dlg,da9131", .data = (void *) DA9121_SUBTYPE_DA9131 },
1007         { .compatible = "dlg,da9220", .data = (void *) DA9121_SUBTYPE_DA9220 },
1008         { .compatible = "dlg,da9132", .data = (void *) DA9121_SUBTYPE_DA9132 },
1009         { }
1010 };
1011 MODULE_DEVICE_TABLE(of, da9121_dt_ids);
1012
1013 static inline int da9121_of_get_id(struct device *dev)
1014 {
1015         const struct of_device_id *id = of_match_device(da9121_dt_ids, dev);
1016
1017         if (!id) {
1018                 dev_err(dev, "%s: Failed\n", __func__);
1019                 return -EINVAL;
1020         }
1021         return (uintptr_t)id->data;
1022 }
1023
1024 static int da9121_i2c_probe(struct i2c_client *i2c,
1025                             const struct i2c_device_id *id)
1026 {
1027         struct da9121 *chip;
1028         const int mask_all[4] = { 0xFF, 0xFF, 0xFF, 0xFF };
1029         int ret = 0;
1030
1031         chip = devm_kzalloc(&i2c->dev, sizeof(struct da9121), GFP_KERNEL);
1032         if (!chip) {
1033                 ret = -ENOMEM;
1034                 goto error;
1035         }
1036
1037         chip->pdata = i2c->dev.platform_data;
1038         chip->subvariant_id = da9121_of_get_id(&i2c->dev);
1039
1040         ret = da9121_assign_chip_model(i2c, chip);
1041         if (ret < 0)
1042                 goto error;
1043
1044         ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
1045         if (ret != 0) {
1046                 dev_err(chip->dev, "Failed to set IRQ masks: %d\n", ret);
1047                 goto error;
1048         }
1049
1050         ret = da9121_set_regulator_config(chip);
1051         if (ret < 0)
1052                 goto error;
1053
1054         ret = da9121_config_irq(i2c, chip);
1055
1056 error:
1057         return ret;
1058 }
1059
1060 static int da9121_i2c_remove(struct i2c_client *i2c)
1061 {
1062         struct da9121 *chip = i2c_get_clientdata(i2c);
1063         const int mask_all[4] = { 0xFF, 0xFF, 0xFF, 0xFF };
1064         int ret = 0;
1065
1066         free_irq(chip->chip_irq, chip);
1067         cancel_delayed_work_sync(&chip->work);
1068
1069         ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
1070         if (ret != 0)
1071                 dev_err(chip->dev, "Failed to set IRQ masks: %d\n", ret);
1072         return ret;
1073 }
1074
1075 static const struct i2c_device_id da9121_i2c_id[] = {
1076         {"da9121", DA9121_TYPE_DA9121_DA9130},
1077         {"da9130", DA9121_TYPE_DA9121_DA9130},
1078         {"da9217", DA9121_TYPE_DA9217},
1079         {"da9122", DA9121_TYPE_DA9122_DA9131},
1080         {"da9131", DA9121_TYPE_DA9122_DA9131},
1081         {"da9220", DA9121_TYPE_DA9220_DA9132},
1082         {"da9132", DA9121_TYPE_DA9220_DA9132},
1083         {},
1084 };
1085 MODULE_DEVICE_TABLE(i2c, da9121_i2c_id);
1086
1087 static struct i2c_driver da9121_regulator_driver = {
1088         .driver = {
1089                 .name = "da9121",
1090                 .of_match_table = of_match_ptr(da9121_dt_ids),
1091         },
1092         .probe = da9121_i2c_probe,
1093         .remove = da9121_i2c_remove,
1094         .id_table = da9121_i2c_id,
1095 };
1096
1097 module_i2c_driver(da9121_regulator_driver);
1098
1099 MODULE_LICENSE("GPL v2");