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.h> 17#include <linux/gpio/consumer.h> 18#include <linux/regulator/of_regulator.h> 19#include <linux/regulator/machine.h> 20#include <linux/regulator/driver.h> 21#include <linux/module.h> 22#include <linux/regmap.h> 23#include <linux/err.h> 24#include <linux/i2c.h> 25#include <linux/regulator/da9121.h> 26#include <linux/interrupt.h> 27#include <linux/workqueue.h> 28 29#include "da9121-regulator.h" 30 31/* Chip data */ 32struct da9121 { 33 struct device *dev; 34 struct delayed_work work; 35 struct da9121_pdata *pdata; 36 struct regmap *regmap; 37 struct regulator_dev *rdev[DA9121_IDX_MAX]; 38 unsigned int persistent[2]; 39 unsigned int passive_delay; 40 int chip_irq; 41 int variant_id; 42 int subvariant_id; 43}; 44 45/* Define ranges for different variants, enabling translation to/from 46 * registers. Maximums give scope to allow for transients. 47 */ 48struct da9121_range { 49 int val_min; 50 int val_max; 51 int val_stp; 52 int reg_min; 53 int reg_max; 54}; 55 56static struct da9121_range da9121_10A_2phase_current = { 57 .val_min = 7000000, 58 .val_max = 20000000, 59 .val_stp = 1000000, 60 .reg_min = 1, 61 .reg_max = 14, 62}; 63 64static struct da9121_range da9121_6A_2phase_current = { 65 .val_min = 7000000, 66 .val_max = 12000000, 67 .val_stp = 1000000, 68 .reg_min = 1, 69 .reg_max = 6, 70}; 71 72static struct da9121_range da9121_5A_1phase_current = { 73 .val_min = 3500000, 74 .val_max = 10000000, 75 .val_stp = 500000, 76 .reg_min = 1, 77 .reg_max = 14, 78}; 79 80static struct da9121_range da9121_3A_1phase_current = { 81 .val_min = 3500000, 82 .val_max = 6000000, 83 .val_stp = 500000, 84 .reg_min = 1, 85 .reg_max = 6, 86}; 87 88static struct da9121_range da914x_40A_4phase_current = { 89 .val_min = 26000000, 90 .val_max = 78000000, 91 .val_stp = 4000000, 92 .reg_min = 1, 93 .reg_max = 14, 94}; 95 96static struct da9121_range da914x_20A_2phase_current = { 97 .val_min = 13000000, 98 .val_max = 39000000, 99 .val_stp = 2000000, 100 .reg_min = 1, 101 .reg_max = 14, 102}; 103 104struct da9121_variant_info { 105 int num_bucks; 106 int num_phases; 107 struct da9121_range *current_range; 108}; 109 110static const struct da9121_variant_info variant_parameters[] = { 111 { 1, 2, &da9121_10A_2phase_current }, //DA9121_TYPE_DA9121_DA9130 112 { 2, 1, &da9121_3A_1phase_current }, //DA9121_TYPE_DA9220_DA9132 113 { 2, 1, &da9121_5A_1phase_current }, //DA9121_TYPE_DA9122_DA9131 114 { 1, 2, &da9121_6A_2phase_current }, //DA9121_TYPE_DA9217 115 { 1, 4, &da914x_40A_4phase_current }, //DA9121_TYPE_DA9141 116 { 1, 2, &da914x_20A_2phase_current }, //DA9121_TYPE_DA9142 117}; 118 119struct da9121_field { 120 unsigned int reg; 121 unsigned int msk; 122}; 123 124static const struct da9121_field da9121_current_field[2] = { 125 { DA9121_REG_BUCK_BUCK1_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM }, 126 { DA9xxx_REG_BUCK_BUCK2_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM }, 127}; 128 129static const struct da9121_field da9121_mode_field[2] = { 130 { DA9121_REG_BUCK_BUCK1_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE }, 131 { DA9xxx_REG_BUCK_BUCK2_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE }, 132}; 133 134struct status_event_data { 135 int buck_id; /* 0=core, 1/2-buck */ 136 int reg_index; /* index for status/event/mask register selection */ 137 int status_bit; /* bit masks... */ 138 int event_bit; 139 int mask_bit; 140 unsigned long notification; /* Notification for status inception */ 141 char *warn; /* if NULL, notify - otherwise dev_warn this string */ 142}; 143 144#define DA9121_STATUS(id, bank, name, notification, warning) \ 145 { id, bank, \ 146 DA9121_MASK_SYS_STATUS_##bank##_##name, \ 147 DA9121_MASK_SYS_EVENT_##bank##_E_##name, \ 148 DA9121_MASK_SYS_MASK_##bank##_M_##name, \ 149 notification, warning } 150 151/* For second buck related event bits that are specific to DA9122, DA9220 variants */ 152#define DA9xxx_STATUS(id, bank, name, notification, warning) \ 153 { id, bank, \ 154 DA9xxx_MASK_SYS_STATUS_##bank##_##name, \ 155 DA9xxx_MASK_SYS_EVENT_##bank##_E_##name, \ 156 DA9xxx_MASK_SYS_MASK_##bank##_M_##name, \ 157 notification, warning } 158 159/* The status signals that may need servicing, depending on device variant. 160 * After assertion, they persist; so event is notified, the IRQ disabled, 161 * and status polled until clear again and IRQ is reenabled. 162 * 163 * SG/PG1/PG2 should be set when device first powers up and should never 164 * re-occur. When this driver starts, it is expected that these will have 165 * self-cleared for when the IRQs are enabled, so these should never be seen. 166 * If seen, the implication is that the device has reset. 167 * 168 * GPIO0/1/2 are not configured for use by default, so should not be seen. 169 */ 170static const struct status_event_data status_event_handling[] = { 171 DA9xxx_STATUS(0, 0, SG, 0, "Handled E_SG\n"), 172 DA9121_STATUS(0, 0, TEMP_CRIT, (REGULATOR_EVENT_OVER_TEMP|REGULATOR_EVENT_DISABLE), NULL), 173 DA9121_STATUS(0, 0, TEMP_WARN, REGULATOR_EVENT_OVER_TEMP, NULL), 174 DA9121_STATUS(1, 1, PG1, 0, "Handled E_PG1\n"), 175 DA9121_STATUS(1, 1, OV1, REGULATOR_EVENT_REGULATION_OUT, NULL), 176 DA9121_STATUS(1, 1, UV1, REGULATOR_EVENT_UNDER_VOLTAGE, NULL), 177 DA9121_STATUS(1, 1, OC1, REGULATOR_EVENT_OVER_CURRENT, NULL), 178 DA9xxx_STATUS(2, 1, PG2, 0, "Handled E_PG2\n"), 179 DA9xxx_STATUS(2, 1, OV2, REGULATOR_EVENT_REGULATION_OUT, NULL), 180 DA9xxx_STATUS(2, 1, UV2, REGULATOR_EVENT_UNDER_VOLTAGE, NULL), 181 DA9xxx_STATUS(2, 1, OC2, REGULATOR_EVENT_OVER_CURRENT, NULL), 182 DA9121_STATUS(0, 2, GPIO0, 0, "Handled E_GPIO0\n"), 183 DA9121_STATUS(0, 2, GPIO1, 0, "Handled E_GPIO1\n"), 184 DA9121_STATUS(0, 2, GPIO2, 0, "Handled E_GPIO2\n"), 185}; 186 187static int da9121_get_current_limit(struct regulator_dev *rdev) 188{ 189 struct da9121 *chip = rdev_get_drvdata(rdev); 190 int id = rdev_get_id(rdev); 191 struct da9121_range *range = 192 variant_parameters[chip->variant_id].current_range; 193 unsigned int val = 0; 194 int ret = 0; 195 196 ret = regmap_read(chip->regmap, da9121_current_field[id].reg, &val); 197 if (ret < 0) { 198 dev_err(chip->dev, "Cannot read BUCK register: %d\n", ret); 199 goto error; 200 } 201 202 if (val < range->reg_min) { 203 ret = -EACCES; 204 goto error; 205 } 206 207 if (val > range->reg_max) { 208 ret = -EINVAL; 209 goto error; 210 } 211 212 return range->val_min + (range->val_stp * (val - range->reg_min)); 213error: 214 return ret; 215} 216 217static int da9121_ceiling_selector(struct regulator_dev *rdev, 218 int min, int max, 219 unsigned int *selector) 220{ 221 struct da9121 *chip = rdev_get_drvdata(rdev); 222 struct da9121_range *range = 223 variant_parameters[chip->variant_id].current_range; 224 unsigned int level; 225 unsigned int i = 0; 226 unsigned int sel = 0; 227 int ret = 0; 228 229 if (range->val_min > max || range->val_max < min) { 230 dev_err(chip->dev, 231 "Requested current out of regulator capability\n"); 232 ret = -EINVAL; 233 goto error; 234 } 235 236 level = range->val_max; 237 for (i = range->reg_max; i >= range->reg_min; i--) { 238 if (level <= max) { 239 sel = i; 240 break; 241 } 242 level -= range->val_stp; 243 } 244 245 if (level < min) { 246 dev_err(chip->dev, 247 "Best match falls below minimum requested current\n"); 248 ret = -EINVAL; 249 goto error; 250 } 251 252 *selector = sel; 253error: 254 return ret; 255} 256 257static int da9121_set_current_limit(struct regulator_dev *rdev, 258 int min_ua, int max_ua) 259{ 260 struct da9121 *chip = rdev_get_drvdata(rdev); 261 int id = rdev_get_id(rdev); 262 struct da9121_range *range = 263 variant_parameters[chip->variant_id].current_range; 264 unsigned int sel = 0; 265 int ret = 0; 266 267 if (min_ua < range->val_min || 268 max_ua > range->val_max) { 269 ret = -EINVAL; 270 goto error; 271 } 272 273 if (rdev->desc->ops->is_enabled(rdev)) { 274 ret = -EBUSY; 275 goto error; 276 } 277 278 ret = da9121_ceiling_selector(rdev, min_ua, max_ua, &sel); 279 if (ret < 0) 280 goto error; 281 282 ret = regmap_update_bits(chip->regmap, 283 da9121_current_field[id].reg, 284 da9121_current_field[id].msk, 285 (unsigned int)sel); 286 if (ret < 0) 287 dev_err(chip->dev, "Cannot update BUCK current limit, err: %d\n", ret); 288 289error: 290 return ret; 291} 292 293static unsigned int da9121_map_mode(unsigned int mode) 294{ 295 switch (mode) { 296 case DA9121_BUCK_MODE_FORCE_PWM: 297 return REGULATOR_MODE_FAST; 298 case DA9121_BUCK_MODE_FORCE_PWM_SHEDDING: 299 return REGULATOR_MODE_NORMAL; 300 case DA9121_BUCK_MODE_AUTO: 301 return REGULATOR_MODE_IDLE; 302 case DA9121_BUCK_MODE_FORCE_PFM: 303 return REGULATOR_MODE_STANDBY; 304 default: 305 return REGULATOR_MODE_INVALID; 306 } 307} 308 309static int da9121_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) 310{ 311 struct da9121 *chip = rdev_get_drvdata(rdev); 312 int id = rdev_get_id(rdev); 313 unsigned int val; 314 315 switch (mode) { 316 case REGULATOR_MODE_FAST: 317 val = DA9121_BUCK_MODE_FORCE_PWM; 318 break; 319 case REGULATOR_MODE_NORMAL: 320 val = DA9121_BUCK_MODE_FORCE_PWM_SHEDDING; 321 break; 322 case REGULATOR_MODE_IDLE: 323 val = DA9121_BUCK_MODE_AUTO; 324 break; 325 case REGULATOR_MODE_STANDBY: 326 val = DA9121_BUCK_MODE_FORCE_PFM; 327 break; 328 default: 329 return -EINVAL; 330 } 331 332 return regmap_update_bits(chip->regmap, 333 da9121_mode_field[id].reg, 334 da9121_mode_field[id].msk, 335 val); 336} 337 338static unsigned int da9121_buck_get_mode(struct regulator_dev *rdev) 339{ 340 struct da9121 *chip = rdev_get_drvdata(rdev); 341 int id = rdev_get_id(rdev); 342 unsigned int val, mode; 343 int ret = 0; 344 345 ret = regmap_read(chip->regmap, da9121_mode_field[id].reg, &val); 346 if (ret < 0) { 347 dev_err(chip->dev, "Cannot read BUCK register: %d\n", ret); 348 return -EINVAL; 349 } 350 351 mode = da9121_map_mode(val & da9121_mode_field[id].msk); 352 if (mode == REGULATOR_MODE_INVALID) 353 return -EINVAL; 354 355 return mode; 356} 357 358static const struct regulator_ops da9121_buck_ops = { 359 .enable = regulator_enable_regmap, 360 .disable = regulator_disable_regmap, 361 .is_enabled = regulator_is_enabled_regmap, 362 .set_voltage_sel = regulator_set_voltage_sel_regmap, 363 .get_voltage_sel = regulator_get_voltage_sel_regmap, 364 .list_voltage = regulator_list_voltage_linear, 365 .get_current_limit = da9121_get_current_limit, 366 .set_current_limit = da9121_set_current_limit, 367 .set_mode = da9121_buck_set_mode, 368 .get_mode = da9121_buck_get_mode, 369}; 370 371static struct of_regulator_match da9121_matches[] = { 372 [DA9121_IDX_BUCK1] = { .name = "buck1" }, 373 [DA9121_IDX_BUCK2] = { .name = "buck2" }, 374}; 375 376static int da9121_of_parse_cb(struct device_node *np, 377 const struct regulator_desc *desc, 378 struct regulator_config *config) 379{ 380 struct da9121 *chip = config->driver_data; 381 struct da9121_pdata *pdata; 382 struct gpio_desc *ena_gpiod; 383 384 if (chip->pdata == NULL) { 385 pdata = devm_kzalloc(chip->dev, sizeof(*pdata), GFP_KERNEL); 386 if (!pdata) 387 return -ENOMEM; 388 } else { 389 pdata = chip->pdata; 390 } 391 392 pdata->num_buck++; 393 394 if (pdata->num_buck > variant_parameters[chip->variant_id].num_bucks) { 395 dev_err(chip->dev, "Error: excessive regulators for device\n"); 396 return -ENODEV; 397 } 398 399 ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(np), "enable", 0, 400 GPIOD_OUT_HIGH | 401 GPIOD_FLAGS_BIT_NONEXCLUSIVE, 402 "da9121-enable"); 403 if (!IS_ERR(ena_gpiod)) 404 config->ena_gpiod = ena_gpiod; 405 406 if (variant_parameters[chip->variant_id].num_bucks == 2) { 407 uint32_t ripple_cancel; 408 uint32_t ripple_reg; 409 int ret; 410 411 if (of_property_read_u32(da9121_matches[pdata->num_buck-1].of_node, 412 "dlg,ripple-cancel", &ripple_cancel)) { 413 if (pdata->num_buck > 1) 414 ripple_reg = DA9xxx_REG_BUCK_BUCK2_7; 415 else 416 ripple_reg = DA9121_REG_BUCK_BUCK1_7; 417 418 ret = regmap_update_bits(chip->regmap, ripple_reg, 419 DA9xxx_MASK_BUCK_BUCKx_7_CHx_RIPPLE_CANCEL, 420 ripple_cancel); 421 if (ret < 0) 422 dev_err(chip->dev, "Cannot set ripple mode, err: %d\n", ret); 423 } 424 } 425 426 return 0; 427} 428 429#define DA9121_MIN_MV 300 430#define DA9121_MAX_MV 1900 431#define DA9121_STEP_MV 10 432#define DA9121_MIN_SEL (DA9121_MIN_MV / DA9121_STEP_MV) 433#define DA9121_N_VOLTAGES (((DA9121_MAX_MV - DA9121_MIN_MV) / DA9121_STEP_MV) \ 434 + 1 + DA9121_MIN_SEL) 435 436static const struct regulator_desc da9121_reg = { 437 .id = DA9121_IDX_BUCK1, 438 .name = "da9121", 439 .of_match = "buck1", 440 .of_parse_cb = da9121_of_parse_cb, 441 .owner = THIS_MODULE, 442 .regulators_node = "regulators", 443 .of_map_mode = da9121_map_mode, 444 .ops = &da9121_buck_ops, 445 .type = REGULATOR_VOLTAGE, 446 .n_voltages = DA9121_N_VOLTAGES, 447 .min_uV = DA9121_MIN_MV * 1000, 448 .uV_step = DA9121_STEP_MV * 1000, 449 .linear_min_sel = DA9121_MIN_SEL, 450 .vsel_reg = DA9121_REG_BUCK_BUCK1_5, 451 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT, 452 .enable_reg = DA9121_REG_BUCK_BUCK1_0, 453 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN, 454 /* Default value of BUCK_BUCK1_0.CH1_SRC_DVC_UP */ 455 .ramp_delay = 20000, 456 /* tBUCK_EN */ 457 .enable_time = 20, 458}; 459 460static const struct regulator_desc da9220_reg[2] = { 461 { 462 .id = DA9121_IDX_BUCK1, 463 .name = "DA9220/DA9132 BUCK1", 464 .of_match = "buck1", 465 .of_parse_cb = da9121_of_parse_cb, 466 .owner = THIS_MODULE, 467 .regulators_node = "regulators", 468 .of_map_mode = da9121_map_mode, 469 .ops = &da9121_buck_ops, 470 .type = REGULATOR_VOLTAGE, 471 .n_voltages = DA9121_N_VOLTAGES, 472 .min_uV = DA9121_MIN_MV * 1000, 473 .uV_step = DA9121_STEP_MV * 1000, 474 .linear_min_sel = DA9121_MIN_SEL, 475 .enable_reg = DA9121_REG_BUCK_BUCK1_0, 476 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN, 477 .vsel_reg = DA9121_REG_BUCK_BUCK1_5, 478 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT, 479 }, 480 { 481 .id = DA9121_IDX_BUCK2, 482 .name = "DA9220/DA9132 BUCK2", 483 .of_match = "buck2", 484 .of_parse_cb = da9121_of_parse_cb, 485 .owner = THIS_MODULE, 486 .regulators_node = "regulators", 487 .of_map_mode = da9121_map_mode, 488 .ops = &da9121_buck_ops, 489 .type = REGULATOR_VOLTAGE, 490 .n_voltages = DA9121_N_VOLTAGES, 491 .min_uV = DA9121_MIN_MV * 1000, 492 .uV_step = DA9121_STEP_MV * 1000, 493 .linear_min_sel = DA9121_MIN_SEL, 494 .enable_reg = DA9xxx_REG_BUCK_BUCK2_0, 495 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN, 496 .vsel_reg = DA9xxx_REG_BUCK_BUCK2_5, 497 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT, 498 } 499}; 500 501static const struct regulator_desc da9122_reg[2] = { 502 { 503 .id = DA9121_IDX_BUCK1, 504 .name = "DA9122/DA9131 BUCK1", 505 .of_match = "buck1", 506 .of_parse_cb = da9121_of_parse_cb, 507 .owner = THIS_MODULE, 508 .regulators_node = "regulators", 509 .of_map_mode = da9121_map_mode, 510 .ops = &da9121_buck_ops, 511 .type = REGULATOR_VOLTAGE, 512 .n_voltages = DA9121_N_VOLTAGES, 513 .min_uV = DA9121_MIN_MV * 1000, 514 .uV_step = DA9121_STEP_MV * 1000, 515 .linear_min_sel = DA9121_MIN_SEL, 516 .enable_reg = DA9121_REG_BUCK_BUCK1_0, 517 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN, 518 .vsel_reg = DA9121_REG_BUCK_BUCK1_5, 519 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT, 520 }, 521 { 522 .id = DA9121_IDX_BUCK2, 523 .name = "DA9122/DA9131 BUCK2", 524 .of_match = "buck2", 525 .of_parse_cb = da9121_of_parse_cb, 526 .owner = THIS_MODULE, 527 .regulators_node = "regulators", 528 .of_map_mode = da9121_map_mode, 529 .ops = &da9121_buck_ops, 530 .type = REGULATOR_VOLTAGE, 531 .n_voltages = DA9121_N_VOLTAGES, 532 .min_uV = DA9121_MIN_MV * 1000, 533 .uV_step = DA9121_STEP_MV * 1000, 534 .linear_min_sel = DA9121_MIN_SEL, 535 .enable_reg = DA9xxx_REG_BUCK_BUCK2_0, 536 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN, 537 .vsel_reg = DA9xxx_REG_BUCK_BUCK2_5, 538 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT, 539 } 540}; 541 542static const struct regulator_desc da9217_reg = { 543 .id = DA9121_IDX_BUCK1, 544 .name = "DA9217 BUCK1", 545 .of_match = "buck1", 546 .of_parse_cb = da9121_of_parse_cb, 547 .owner = THIS_MODULE, 548 .regulators_node = "regulators", 549 .of_map_mode = da9121_map_mode, 550 .ops = &da9121_buck_ops, 551 .type = REGULATOR_VOLTAGE, 552 .n_voltages = DA9121_N_VOLTAGES, 553 .min_uV = DA9121_MIN_MV * 1000, 554 .uV_step = DA9121_STEP_MV * 1000, 555 .linear_min_sel = DA9121_MIN_SEL, 556 .enable_reg = DA9121_REG_BUCK_BUCK1_0, 557 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN, 558 .vsel_reg = DA9121_REG_BUCK_BUCK1_5, 559 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT, 560}; 561 562#define DA914X_MIN_MV 500 563#define DA914X_MAX_MV 1300 564#define DA914X_STEP_MV 10 565#define DA914X_MIN_SEL (DA914X_MIN_MV / DA914X_STEP_MV) 566#define DA914X_N_VOLTAGES (((DA914X_MAX_MV - DA914X_MIN_MV) / DA914X_STEP_MV) \ 567 + 1 + DA914X_MIN_SEL) 568 569static const struct regulator_desc da9141_reg = { 570 .id = DA9121_IDX_BUCK1, 571 .name = "DA9141", 572 .of_match = "buck1", 573 .of_parse_cb = da9121_of_parse_cb, 574 .owner = THIS_MODULE, 575 .regulators_node = "regulators", 576 .of_map_mode = da9121_map_mode, 577 .ops = &da9121_buck_ops, 578 .type = REGULATOR_VOLTAGE, 579 .n_voltages = DA914X_N_VOLTAGES, 580 .min_uV = DA914X_MIN_MV * 1000, 581 .uV_step = DA914X_STEP_MV * 1000, 582 .linear_min_sel = DA914X_MIN_SEL, 583 .vsel_reg = DA9121_REG_BUCK_BUCK1_5, 584 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT, 585 .enable_reg = DA9121_REG_BUCK_BUCK1_0, 586 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN, 587}; 588 589static const struct regulator_desc da9142_reg = { 590 .id = DA9121_IDX_BUCK1, 591 .name = "DA9142 BUCK1", 592 .of_match = "buck1", 593 .of_parse_cb = da9121_of_parse_cb, 594 .owner = THIS_MODULE, 595 .regulators_node = "regulators", 596 .of_map_mode = da9121_map_mode, 597 .ops = &da9121_buck_ops, 598 .type = REGULATOR_VOLTAGE, 599 .n_voltages = DA914X_N_VOLTAGES, 600 .min_uV = DA914X_MIN_MV * 1000, 601 .uV_step = DA914X_STEP_MV * 1000, 602 .linear_min_sel = DA914X_MIN_SEL, 603 .enable_reg = DA9121_REG_BUCK_BUCK1_0, 604 .enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN, 605 .vsel_reg = DA9121_REG_BUCK_BUCK1_5, 606 .vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT, 607}; 608 609 610static const struct regulator_desc *local_da9121_regulators[][DA9121_IDX_MAX] = { 611 [DA9121_TYPE_DA9121_DA9130] = { &da9121_reg, NULL }, 612 [DA9121_TYPE_DA9220_DA9132] = { &da9220_reg[0], &da9220_reg[1] }, 613 [DA9121_TYPE_DA9122_DA9131] = { &da9122_reg[0], &da9122_reg[1] }, 614 [DA9121_TYPE_DA9217] = { &da9217_reg, NULL }, 615 [DA9121_TYPE_DA9141] = { &da9141_reg, NULL }, 616 [DA9121_TYPE_DA9142] = { &da9142_reg, NULL }, 617}; 618 619static void da9121_status_poll_on(struct work_struct *work) 620{ 621 struct da9121 *chip = container_of(work, struct da9121, work.work); 622 int status[3] = {0}; 623 int clear[3] = {0}; 624 unsigned long delay; 625 int i; 626 int ret; 627 628 ret = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_STATUS_0, status, 2); 629 if (ret < 0) { 630 dev_err(chip->dev, 631 "Failed to read STATUS registers: %d\n", ret); 632 goto error; 633 } 634 635 /* Possible events are tested to be within range for the variant, potentially 636 * masked by the IRQ handler (not just warned about), as having been masked, 637 * and the respective state cleared - then flagged to unmask for next IRQ. 638 */ 639 for (i = 0; i < ARRAY_SIZE(status_event_handling); i++) { 640 const struct status_event_data *item = &status_event_handling[i]; 641 int reg_idx = item->reg_index; 642 bool relevant = (item->buck_id <= variant_parameters[chip->variant_id].num_bucks); 643 bool supported = (item->warn == NULL); 644 bool persisting = (chip->persistent[reg_idx] & item->event_bit); 645 bool now_cleared = !(status[reg_idx] & item->status_bit); 646 647 if (relevant && supported && persisting && now_cleared) { 648 clear[reg_idx] |= item->mask_bit; 649 chip->persistent[reg_idx] &= ~item->event_bit; 650 } 651 } 652 653 for (i = 0; i < 2; i++) { 654 if (clear[i]) { 655 unsigned int reg = DA9121_REG_SYS_MASK_0 + i; 656 unsigned int mbit = clear[i]; 657 658 ret = regmap_update_bits(chip->regmap, reg, mbit, 0); 659 if (ret < 0) { 660 dev_err(chip->dev, 661 "Failed to unmask 0x%02x %d\n", 662 reg, ret); 663 goto error; 664 } 665 } 666 } 667 668 if (chip->persistent[0] | chip->persistent[1]) { 669 delay = msecs_to_jiffies(chip->passive_delay); 670 queue_delayed_work(system_freezable_wq, &chip->work, delay); 671 } 672 673error: 674 return; 675} 676 677static irqreturn_t da9121_irq_handler(int irq, void *data) 678{ 679 struct da9121 *chip = data; 680 struct regulator_dev *rdev; 681 int event[3] = {0}; 682 int handled[3] = {0}; 683 int mask[3] = {0}; 684 int ret = IRQ_NONE; 685 int i; 686 int err; 687 688 err = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_EVENT_0, event, 3); 689 if (err < 0) { 690 dev_err(chip->dev, "Failed to read EVENT registers %d\n", err); 691 ret = IRQ_NONE; 692 goto error; 693 } 694 695 err = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_MASK_0, mask, 3); 696 if (err < 0) { 697 dev_err(chip->dev, 698 "Failed to read MASK registers: %d\n", ret); 699 ret = IRQ_NONE; 700 goto error; 701 } 702 703 rdev = chip->rdev[DA9121_IDX_BUCK1]; 704 705 /* Possible events are tested to be within range for the variant, currently 706 * enabled, and having triggered this IRQ. The event may then be notified, 707 * or a warning given for unexpected events - those from device POR, and 708 * currently unsupported GPIO configurations. 709 */ 710 for (i = 0; i < ARRAY_SIZE(status_event_handling); i++) { 711 const struct status_event_data *item = &status_event_handling[i]; 712 int reg_idx = item->reg_index; 713 bool relevant = (item->buck_id <= variant_parameters[chip->variant_id].num_bucks); 714 bool enabled = !(mask[reg_idx] & item->mask_bit); 715 bool active = (event[reg_idx] & item->event_bit); 716 bool notify = (item->warn == NULL); 717 718 if (relevant && enabled && active) { 719 if (notify) { 720 chip->persistent[reg_idx] |= item->event_bit; 721 regulator_notifier_call_chain(rdev, item->notification, NULL); 722 } else { 723 dev_warn(chip->dev, item->warn); 724 handled[reg_idx] |= item->event_bit; 725 ret = IRQ_HANDLED; 726 } 727 } 728 } 729 730 for (i = 0; i < 3; i++) { 731 if (event[i] != handled[i]) { 732 dev_warn(chip->dev, 733 "Unhandled event(s) in bank%d 0x%02x\n", i, 734 event[i] ^ handled[i]); 735 } 736 } 737 738 /* Mask the interrupts for persistent events OV, OC, UV, WARN, CRIT */ 739 for (i = 0; i < 2; i++) { 740 if (handled[i]) { 741 unsigned int reg = DA9121_REG_SYS_MASK_0 + i; 742 unsigned int mbit = handled[i]; 743 744 err = regmap_update_bits(chip->regmap, reg, mbit, mbit); 745 if (err < 0) { 746 dev_err(chip->dev, 747 "Failed to mask 0x%02x interrupt %d\n", 748 reg, err); 749 ret = IRQ_NONE; 750 goto error; 751 } 752 } 753 } 754 755 /* clear the events */ 756 if (handled[0] | handled[1] | handled[2]) { 757 err = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_EVENT_0, handled, 3); 758 if (err < 0) { 759 dev_err(chip->dev, "Fail to write EVENTs %d\n", err); 760 ret = IRQ_NONE; 761 goto error; 762 } 763 } 764 765 queue_delayed_work(system_freezable_wq, &chip->work, 0); 766error: 767 return ret; 768} 769 770static int da9121_set_regulator_config(struct da9121 *chip) 771{ 772 struct regulator_config config = { }; 773 unsigned int max_matches = variant_parameters[chip->variant_id].num_bucks; 774 int ret = 0; 775 int i; 776 777 for (i = 0; i < max_matches; i++) { 778 const struct regulator_desc *regl_desc = 779 local_da9121_regulators[chip->variant_id][i]; 780 781 config.dev = chip->dev; 782 config.driver_data = chip; 783 config.regmap = chip->regmap; 784 785 chip->rdev[i] = devm_regulator_register(chip->dev, 786 regl_desc, &config); 787 if (IS_ERR(chip->rdev[i])) { 788 dev_err(chip->dev, "Failed to register regulator %s, %d/%d\n", 789 regl_desc->name, (i+1), max_matches); 790 ret = PTR_ERR(chip->rdev[i]); 791 goto error; 792 } 793 } 794 795error: 796 return ret; 797} 798 799/* DA9121 chip register model */ 800static const struct regmap_range da9121_1ch_readable_ranges[] = { 801 regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3), 802 regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3), 803 regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1), 804 regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_6), 805 regmap_reg_range(DA9121_REG_OTP_DEVICE_ID, DA9121_REG_OTP_CONFIG_ID), 806}; 807 808static const struct regmap_access_table da9121_1ch_readable_table = { 809 .yes_ranges = da9121_1ch_readable_ranges, 810 .n_yes_ranges = ARRAY_SIZE(da9121_1ch_readable_ranges), 811}; 812 813static const struct regmap_range da9121_2ch_readable_ranges[] = { 814 regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3), 815 regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3), 816 regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1), 817 regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_7), 818 regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_0, DA9xxx_REG_BUCK_BUCK2_7), 819 regmap_reg_range(DA9121_REG_OTP_DEVICE_ID, DA9121_REG_OTP_CONFIG_ID), 820}; 821 822static const struct regmap_access_table da9121_2ch_readable_table = { 823 .yes_ranges = da9121_2ch_readable_ranges, 824 .n_yes_ranges = ARRAY_SIZE(da9121_2ch_readable_ranges), 825}; 826 827static const struct regmap_range da9121_1ch_writeable_ranges[] = { 828 regmap_reg_range(DA9121_REG_SYS_EVENT_0, DA9121_REG_SYS_MASK_3), 829 regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3), 830 regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1), 831 regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_2), 832 regmap_reg_range(DA9121_REG_BUCK_BUCK1_4, DA9121_REG_BUCK_BUCK1_6), 833}; 834 835static const struct regmap_access_table da9121_1ch_writeable_table = { 836 .yes_ranges = da9121_1ch_writeable_ranges, 837 .n_yes_ranges = ARRAY_SIZE(da9121_1ch_writeable_ranges), 838}; 839 840static const struct regmap_range da9121_2ch_writeable_ranges[] = { 841 regmap_reg_range(DA9121_REG_SYS_EVENT_0, DA9121_REG_SYS_MASK_3), 842 regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3), 843 regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1), 844 regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_2), 845 regmap_reg_range(DA9121_REG_BUCK_BUCK1_4, DA9121_REG_BUCK_BUCK1_7), 846 regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_0, DA9xxx_REG_BUCK_BUCK2_2), 847 regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_4, DA9xxx_REG_BUCK_BUCK2_7), 848}; 849 850static const struct regmap_access_table da9121_2ch_writeable_table = { 851 .yes_ranges = da9121_2ch_writeable_ranges, 852 .n_yes_ranges = ARRAY_SIZE(da9121_2ch_writeable_ranges), 853}; 854 855 856static const struct regmap_range da9121_volatile_ranges[] = { 857 regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_EVENT_2), 858 regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1), 859 regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_6), 860}; 861 862static const struct regmap_access_table da9121_volatile_table = { 863 .yes_ranges = da9121_volatile_ranges, 864 .n_yes_ranges = ARRAY_SIZE(da9121_volatile_ranges), 865}; 866 867/* DA9121 regmap config for 1 channel variants */ 868static struct regmap_config da9121_1ch_regmap_config = { 869 .reg_bits = 8, 870 .val_bits = 8, 871 .max_register = DA9121_REG_OTP_CONFIG_ID, 872 .rd_table = &da9121_1ch_readable_table, 873 .wr_table = &da9121_1ch_writeable_table, 874 .volatile_table = &da9121_volatile_table, 875 .cache_type = REGCACHE_RBTREE, 876}; 877 878/* DA9121 regmap config for 2 channel variants */ 879static struct regmap_config da9121_2ch_regmap_config = { 880 .reg_bits = 8, 881 .val_bits = 8, 882 .max_register = DA9121_REG_OTP_CONFIG_ID, 883 .rd_table = &da9121_2ch_readable_table, 884 .wr_table = &da9121_2ch_writeable_table, 885 .volatile_table = &da9121_volatile_table, 886 .cache_type = REGCACHE_RBTREE, 887}; 888 889static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip) 890{ 891 u32 device_id; 892 u32 variant_id; 893 u8 variant_mrc, variant_vrc; 894 char *type; 895 bool config_match = false; 896 int ret = 0; 897 898 ret = regmap_read(chip->regmap, DA9121_REG_OTP_DEVICE_ID, &device_id); 899 if (ret < 0) { 900 dev_err(chip->dev, "Cannot read device ID: %d\n", ret); 901 goto error; 902 } 903 904 ret = regmap_read(chip->regmap, DA9121_REG_OTP_VARIANT_ID, &variant_id); 905 if (ret < 0) { 906 dev_err(chip->dev, "Cannot read variant ID: %d\n", ret); 907 goto error; 908 } 909 910 if ((device_id != DA9121_DEVICE_ID) && (device_id != DA914x_DEVICE_ID)) { 911 dev_err(chip->dev, "Invalid device ID: 0x%02x\n", device_id); 912 ret = -ENODEV; 913 goto error; 914 } 915 916 variant_vrc = variant_id & DA9121_MASK_OTP_VARIANT_ID_VRC; 917 918 switch (chip->subvariant_id) { 919 case DA9121_SUBTYPE_DA9121: 920 type = "DA9121"; 921 config_match = (variant_vrc == DA9121_VARIANT_VRC); 922 break; 923 case DA9121_SUBTYPE_DA9130: 924 type = "DA9130"; 925 config_match = (variant_vrc == DA9130_VARIANT_VRC); 926 break; 927 case DA9121_SUBTYPE_DA9220: 928 type = "DA9220"; 929 config_match = (variant_vrc == DA9220_VARIANT_VRC); 930 break; 931 case DA9121_SUBTYPE_DA9132: 932 type = "DA9132"; 933 config_match = (variant_vrc == DA9132_VARIANT_VRC); 934 break; 935 case DA9121_SUBTYPE_DA9122: 936 type = "DA9122"; 937 config_match = (variant_vrc == DA9122_VARIANT_VRC); 938 break; 939 case DA9121_SUBTYPE_DA9131: 940 type = "DA9131"; 941 config_match = (variant_vrc == DA9131_VARIANT_VRC); 942 break; 943 case DA9121_SUBTYPE_DA9217: 944 type = "DA9217"; 945 config_match = (variant_vrc == DA9217_VARIANT_VRC); 946 break; 947 default: 948 type = "Unknown"; 949 break; 950 } 951 952 if (device_id == DA914x_DEVICE_ID) { 953 switch (chip->subvariant_id) { 954 case DA9121_SUBTYPE_DA9141: 955 type = "DA9141"; 956 config_match = (variant_vrc == DA9141_VARIANT_VRC); 957 break; 958 case DA9121_SUBTYPE_DA9142: 959 type = "DA9142"; 960 config_match = (variant_vrc == DA9142_VARIANT_VRC); 961 break; 962 default: 963 type = "Unknown"; 964 break; 965 } 966 } 967 968 dev_info(chip->dev, 969 "Device detected (device-ID: 0x%02X, var-ID: 0x%02X, %s)\n", 970 device_id, variant_id, type); 971 972 if (!config_match) { 973 dev_err(chip->dev, "Device tree configuration does not match detected device.\n"); 974 ret = -EINVAL; 975 goto error; 976 } 977 978 variant_mrc = (variant_id & DA9121_MASK_OTP_VARIANT_ID_MRC) 979 >> DA9121_SHIFT_OTP_VARIANT_ID_MRC; 980 981 if (((device_id == DA9121_DEVICE_ID) && 982 (variant_mrc < DA9121_VARIANT_MRC_BASE)) || 983 ((device_id == DA914x_DEVICE_ID) && 984 (variant_mrc != DA914x_VARIANT_MRC_BASE))) { 985 dev_err(chip->dev, 986 "Cannot support variant MRC: 0x%02X\n", variant_mrc); 987 ret = -EINVAL; 988 } 989error: 990 return ret; 991} 992 993static int da9121_assign_chip_model(struct i2c_client *i2c, 994 struct da9121 *chip) 995{ 996 struct regmap_config *regmap; 997 int ret = 0; 998 999 chip->dev = &i2c->dev; 1000 1001 /* Use configured subtype to select the regulator descriptor index and 1002 * register map, common to both consumer and automotive grade variants 1003 */ 1004 switch (chip->subvariant_id) { 1005 case DA9121_SUBTYPE_DA9121: 1006 case DA9121_SUBTYPE_DA9130: 1007 chip->variant_id = DA9121_TYPE_DA9121_DA9130; 1008 regmap = &da9121_1ch_regmap_config; 1009 break; 1010 case DA9121_SUBTYPE_DA9217: 1011 chip->variant_id = DA9121_TYPE_DA9217; 1012 regmap = &da9121_1ch_regmap_config; 1013 break; 1014 case DA9121_SUBTYPE_DA9122: 1015 case DA9121_SUBTYPE_DA9131: 1016 chip->variant_id = DA9121_TYPE_DA9122_DA9131; 1017 regmap = &da9121_2ch_regmap_config; 1018 break; 1019 case DA9121_SUBTYPE_DA9220: 1020 case DA9121_SUBTYPE_DA9132: 1021 chip->variant_id = DA9121_TYPE_DA9220_DA9132; 1022 regmap = &da9121_2ch_regmap_config; 1023 break; 1024 case DA9121_SUBTYPE_DA9141: 1025 chip->variant_id = DA9121_TYPE_DA9141; 1026 regmap = &da9121_1ch_regmap_config; 1027 break; 1028 case DA9121_SUBTYPE_DA9142: 1029 chip->variant_id = DA9121_TYPE_DA9142; 1030 regmap = &da9121_2ch_regmap_config; 1031 break; 1032 default: 1033 return -EINVAL; 1034 } 1035 1036 /* Set these up for of_regulator_match call which may want .of_map_modes */ 1037 da9121_matches[0].desc = local_da9121_regulators[chip->variant_id][0]; 1038 da9121_matches[1].desc = local_da9121_regulators[chip->variant_id][1]; 1039 1040 chip->regmap = devm_regmap_init_i2c(i2c, regmap); 1041 if (IS_ERR(chip->regmap)) { 1042 ret = PTR_ERR(chip->regmap); 1043 dev_err(chip->dev, "Failed to configure a register map: %d\n", 1044 ret); 1045 return ret; 1046 } 1047 1048 ret = da9121_check_device_type(i2c, chip); 1049 1050 return ret; 1051} 1052 1053static int da9121_config_irq(struct i2c_client *i2c, 1054 struct da9121 *chip) 1055{ 1056 unsigned int p_delay = DA9121_DEFAULT_POLLING_PERIOD_MS; 1057 const int mask_all[4] = { 0, 0, 0xFF, 0xFF }; 1058 int ret = 0; 1059 1060 chip->chip_irq = i2c->irq; 1061 1062 if (chip->chip_irq != 0) { 1063 if (!of_property_read_u32(chip->dev->of_node, 1064 "dlg,irq-polling-delay-passive-ms", 1065 &p_delay)) { 1066 if (p_delay < DA9121_MIN_POLLING_PERIOD_MS || 1067 p_delay > DA9121_MAX_POLLING_PERIOD_MS) { 1068 dev_warn(chip->dev, 1069 "Out-of-range polling period %d ms\n", 1070 p_delay); 1071 p_delay = DA9121_DEFAULT_POLLING_PERIOD_MS; 1072 } 1073 } 1074 1075 chip->passive_delay = p_delay; 1076 1077 ret = request_threaded_irq(chip->chip_irq, NULL, 1078 da9121_irq_handler, 1079 IRQF_TRIGGER_LOW|IRQF_ONESHOT, 1080 "da9121", chip); 1081 if (ret != 0) { 1082 dev_err(chip->dev, "Failed IRQ request: %d\n", 1083 chip->chip_irq); 1084 goto error; 1085 } 1086 1087 ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4); 1088 if (ret != 0) { 1089 dev_err(chip->dev, "Failed to set IRQ masks: %d\n", 1090 ret); 1091 goto regmap_error; 1092 } 1093 1094 INIT_DELAYED_WORK(&chip->work, da9121_status_poll_on); 1095 dev_info(chip->dev, "Interrupt polling period set at %d ms\n", 1096 chip->passive_delay); 1097 } 1098error: 1099 return ret; 1100regmap_error: 1101 free_irq(chip->chip_irq, chip); 1102 return ret; 1103} 1104 1105static const struct of_device_id da9121_dt_ids[] = { 1106 { .compatible = "dlg,da9121", .data = (void *) DA9121_SUBTYPE_DA9121 }, 1107 { .compatible = "dlg,da9130", .data = (void *) DA9121_SUBTYPE_DA9130 }, 1108 { .compatible = "dlg,da9217", .data = (void *) DA9121_SUBTYPE_DA9217 }, 1109 { .compatible = "dlg,da9122", .data = (void *) DA9121_SUBTYPE_DA9122 }, 1110 { .compatible = "dlg,da9131", .data = (void *) DA9121_SUBTYPE_DA9131 }, 1111 { .compatible = "dlg,da9220", .data = (void *) DA9121_SUBTYPE_DA9220 }, 1112 { .compatible = "dlg,da9132", .data = (void *) DA9121_SUBTYPE_DA9132 }, 1113 { .compatible = "dlg,da9141", .data = (void *) DA9121_SUBTYPE_DA9141 }, 1114 { .compatible = "dlg,da9142", .data = (void *) DA9121_SUBTYPE_DA9142 }, 1115 { } 1116}; 1117MODULE_DEVICE_TABLE(of, da9121_dt_ids); 1118 1119static int da9121_i2c_probe(struct i2c_client *i2c) 1120{ 1121 struct da9121 *chip; 1122 const int mask_all[4] = { 0xFF, 0xFF, 0xFF, 0xFF }; 1123 int ret = 0; 1124 1125 chip = devm_kzalloc(&i2c->dev, sizeof(struct da9121), GFP_KERNEL); 1126 if (!chip) { 1127 ret = -ENOMEM; 1128 goto error; 1129 } 1130 1131 chip->pdata = i2c->dev.platform_data; 1132 chip->subvariant_id = (enum da9121_subvariant)i2c_get_match_data(i2c); 1133 1134 ret = da9121_assign_chip_model(i2c, chip); 1135 if (ret < 0) 1136 goto error; 1137 1138 ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4); 1139 if (ret != 0) { 1140 dev_err(chip->dev, "Failed to set IRQ masks: %d\n", ret); 1141 goto error; 1142 } 1143 1144 ret = da9121_set_regulator_config(chip); 1145 if (ret < 0) 1146 goto error; 1147 1148 ret = da9121_config_irq(i2c, chip); 1149 1150error: 1151 return ret; 1152} 1153 1154static void da9121_i2c_remove(struct i2c_client *i2c) 1155{ 1156 struct da9121 *chip = i2c_get_clientdata(i2c); 1157 const int mask_all[4] = { 0xFF, 0xFF, 0xFF, 0xFF }; 1158 int ret; 1159 1160 free_irq(chip->chip_irq, chip); 1161 cancel_delayed_work_sync(&chip->work); 1162 1163 ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4); 1164 if (ret != 0) 1165 dev_err(chip->dev, "Failed to set IRQ masks: %d\n", ret); 1166} 1167 1168static const struct i2c_device_id da9121_i2c_id[] = { 1169 {"da9121", DA9121_TYPE_DA9121_DA9130}, 1170 {"da9130", DA9121_TYPE_DA9121_DA9130}, 1171 {"da9217", DA9121_TYPE_DA9217}, 1172 {"da9122", DA9121_TYPE_DA9122_DA9131}, 1173 {"da9131", DA9121_TYPE_DA9122_DA9131}, 1174 {"da9220", DA9121_TYPE_DA9220_DA9132}, 1175 {"da9132", DA9121_TYPE_DA9220_DA9132}, 1176 {"da9141", DA9121_TYPE_DA9141}, 1177 {"da9142", DA9121_TYPE_DA9142}, 1178 {}, 1179}; 1180MODULE_DEVICE_TABLE(i2c, da9121_i2c_id); 1181 1182static struct i2c_driver da9121_regulator_driver = { 1183 .driver = { 1184 .name = "da9121", 1185 .probe_type = PROBE_PREFER_ASYNCHRONOUS, 1186 .of_match_table = da9121_dt_ids, 1187 }, 1188 .probe = da9121_i2c_probe, 1189 .remove = da9121_i2c_remove, 1190 .id_table = da9121_i2c_id, 1191}; 1192 1193module_i2c_driver(da9121_regulator_driver); 1194 1195MODULE_LICENSE("GPL v2"); 1196