1/* 2 * Regulators driver for Dialog Semiconductor DA903x 3 * 4 * Copyright (C) 2006-2008 Marvell International Ltd. 5 * Copyright (C) 2008 Compulab Ltd. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12#include <linux/kernel.h> 13#include <linux/init.h> 14#include <linux/err.h> 15#include <linux/platform_device.h> 16#include <linux/regulator/driver.h> 17#include <linux/regulator/machine.h> 18#include <linux/mfd/da903x.h> 19 20/* DA9030 Registers */ 21#define DA9030_INVAL (-1) 22#define DA9030_LDO1011 (0x10) 23#define DA9030_LDO15 (0x11) 24#define DA9030_LDO1416 (0x12) 25#define DA9030_LDO1819 (0x13) 26#define DA9030_LDO17 (0x14) 27#define DA9030_BUCK2DVM1 (0x15) 28#define DA9030_BUCK2DVM2 (0x16) 29#define DA9030_RCTL11 (0x17) 30#define DA9030_RCTL21 (0x18) 31#define DA9030_LDO1 (0x90) 32#define DA9030_LDO23 (0x91) 33#define DA9030_LDO45 (0x92) 34#define DA9030_LDO6 (0x93) 35#define DA9030_LDO78 (0x94) 36#define DA9030_LDO912 (0x95) 37#define DA9030_BUCK (0x96) 38#define DA9030_RCTL12 (0x97) 39#define DA9030_RCTL22 (0x98) 40#define DA9030_LDO_UNLOCK (0xa0) 41#define DA9030_LDO_UNLOCK_MASK (0xe0) 42#define DA9034_OVER1 (0x10) 43 44/* DA9034 Registers */ 45#define DA9034_INVAL (-1) 46#define DA9034_OVER2 (0x11) 47#define DA9034_OVER3 (0x12) 48#define DA9034_LDO643 (0x13) 49#define DA9034_LDO987 (0x14) 50#define DA9034_LDO1110 (0x15) 51#define DA9034_LDO1312 (0x16) 52#define DA9034_LDO1514 (0x17) 53#define DA9034_VCC1 (0x20) 54#define DA9034_ADTV1 (0x23) 55#define DA9034_ADTV2 (0x24) 56#define DA9034_AVRC (0x25) 57#define DA9034_CDTV1 (0x26) 58#define DA9034_CDTV2 (0x27) 59#define DA9034_CVRC (0x28) 60#define DA9034_SDTV1 (0x29) 61#define DA9034_SDTV2 (0x2a) 62#define DA9034_SVRC (0x2b) 63#define DA9034_MDTV1 (0x32) 64#define DA9034_MDTV2 (0x33) 65#define DA9034_MVRC (0x34) 66 67/* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */ 68#define DA9035_OVER3 (0x12) 69#define DA9035_VCC2 (0x1f) 70#define DA9035_3DTV1 (0x2c) 71#define DA9035_3DTV2 (0x2d) 72#define DA9035_3VRC (0x2e) 73#define DA9035_AUTOSKIP (0x2f) 74 75struct da903x_regulator_info { 76 struct regulator_desc desc; 77 78 int min_uV; 79 int max_uV; 80 int step_uV; 81 int vol_reg; 82 int vol_shift; 83 int vol_nbits; 84 int update_reg; 85 int update_bit; 86 int enable_reg; 87 int enable_bit; 88}; 89 90static int da9034_ldo12_data[] = { 1700, 1750, 1800, 1850, 1900, 1950, 91 2000, 2050, 2700, 2750, 2800, 2850, 92 2900, 2950, 3000, 3050 }; 93 94static inline struct device *to_da903x_dev(struct regulator_dev *rdev) 95{ 96 return rdev_get_dev(rdev)->parent->parent; 97} 98 99static inline int check_range(struct da903x_regulator_info *info, 100 int min_uV, int max_uV) 101{ 102 if (min_uV < info->min_uV || min_uV > info->max_uV) 103 return -EINVAL; 104 105 return 0; 106} 107 108/* DA9030/DA9034 common operations */ 109static int da903x_set_ldo_voltage(struct regulator_dev *rdev, 110 int min_uV, int max_uV) 111{ 112 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 113 struct device *da9034_dev = to_da903x_dev(rdev); 114 uint8_t val, mask; 115 116 if (check_range(info, min_uV, max_uV)) { 117 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); 118 return -EINVAL; 119 } 120 121 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; 122 val <<= info->vol_shift; 123 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 124 125 return da903x_update(da9034_dev, info->vol_reg, val, mask); 126} 127 128static int da903x_get_voltage(struct regulator_dev *rdev) 129{ 130 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 131 struct device *da9034_dev = to_da903x_dev(rdev); 132 uint8_t val, mask; 133 int ret; 134 135 ret = da903x_read(da9034_dev, info->vol_reg, &val); 136 if (ret) 137 return ret; 138 139 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 140 val = (val & mask) >> info->vol_shift; 141 142 return info->min_uV + info->step_uV * val; 143} 144 145static int da903x_enable(struct regulator_dev *rdev) 146{ 147 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 148 struct device *da9034_dev = to_da903x_dev(rdev); 149 150 return da903x_set_bits(da9034_dev, info->enable_reg, 151 1 << info->enable_bit); 152} 153 154static int da903x_disable(struct regulator_dev *rdev) 155{ 156 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 157 struct device *da9034_dev = to_da903x_dev(rdev); 158 159 return da903x_clr_bits(da9034_dev, info->enable_reg, 160 1 << info->enable_bit); 161} 162 163static int da903x_is_enabled(struct regulator_dev *rdev) 164{ 165 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 166 struct device *da9034_dev = to_da903x_dev(rdev); 167 uint8_t reg_val; 168 int ret; 169 170 ret = da903x_read(da9034_dev, info->enable_reg, ®_val); 171 if (ret) 172 return ret; 173 174 return !!(reg_val & (1 << info->enable_bit)); 175} 176 177static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector) 178{ 179 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 180 int ret; 181 182 ret = info->min_uV + info->step_uV * selector; 183 if (ret > info->max_uV) 184 return -EINVAL; 185 return ret; 186} 187 188/* DA9030 specific operations */ 189static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev, 190 int min_uV, int max_uV) 191{ 192 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 193 struct device *da903x_dev = to_da903x_dev(rdev); 194 uint8_t val, mask; 195 int ret; 196 197 if (check_range(info, min_uV, max_uV)) { 198 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); 199 return -EINVAL; 200 } 201 202 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; 203 val <<= info->vol_shift; 204 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 205 val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */ 206 mask |= DA9030_LDO_UNLOCK_MASK; 207 208 /* write twice */ 209 ret = da903x_update(da903x_dev, info->vol_reg, val, mask); 210 if (ret) 211 return ret; 212 213 return da903x_update(da903x_dev, info->vol_reg, val, mask); 214} 215 216static int da9030_set_ldo14_voltage(struct regulator_dev *rdev, 217 int min_uV, int max_uV) 218{ 219 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 220 struct device *da903x_dev = to_da903x_dev(rdev); 221 uint8_t val, mask; 222 int thresh; 223 224 if (check_range(info, min_uV, max_uV)) { 225 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); 226 return -EINVAL; 227 } 228 229 thresh = (info->max_uV + info->min_uV) / 2; 230 if (min_uV < thresh) { 231 val = (thresh - min_uV + info->step_uV - 1) / info->step_uV; 232 val |= 0x4; 233 } else { 234 val = (min_uV - thresh + info->step_uV - 1) / info->step_uV; 235 } 236 237 val <<= info->vol_shift; 238 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 239 240 return da903x_update(da903x_dev, info->vol_reg, val, mask); 241} 242 243static int da9030_get_ldo14_voltage(struct regulator_dev *rdev) 244{ 245 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 246 struct device *da903x_dev = to_da903x_dev(rdev); 247 uint8_t val, mask; 248 int ret; 249 250 ret = da903x_read(da903x_dev, info->vol_reg, &val); 251 if (ret) 252 return ret; 253 254 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 255 val = (val & mask) >> info->vol_shift; 256 257 if (val & 0x4) 258 return info->min_uV + info->step_uV * (3 - (val & ~0x4)); 259 else 260 return (info->max_uV + info->min_uV) / 2 + 261 info->step_uV * (val & ~0x4); 262} 263 264/* DA9034 specific operations */ 265static int da9034_set_dvc_voltage(struct regulator_dev *rdev, 266 int min_uV, int max_uV) 267{ 268 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 269 struct device *da9034_dev = to_da903x_dev(rdev); 270 uint8_t val, mask; 271 int ret; 272 273 if (check_range(info, min_uV, max_uV)) { 274 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); 275 return -EINVAL; 276 } 277 278 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; 279 val <<= info->vol_shift; 280 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 281 282 ret = da903x_update(da9034_dev, info->vol_reg, val, mask); 283 if (ret) 284 return ret; 285 286 ret = da903x_set_bits(da9034_dev, info->update_reg, 287 1 << info->update_bit); 288 return ret; 289} 290 291static int da9034_set_ldo12_voltage(struct regulator_dev *rdev, 292 int min_uV, int max_uV) 293{ 294 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 295 struct device *da9034_dev = to_da903x_dev(rdev); 296 uint8_t val, mask; 297 298 if (check_range(info, min_uV, max_uV)) { 299 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); 300 return -EINVAL; 301 } 302 303 val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; 304 val = (val >= 20) ? val - 12 : ((val > 7) ? 8 : val); 305 val <<= info->vol_shift; 306 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 307 308 return da903x_update(da9034_dev, info->vol_reg, val, mask); 309} 310 311static int da9034_get_ldo12_voltage(struct regulator_dev *rdev) 312{ 313 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 314 struct device *da9034_dev = to_da903x_dev(rdev); 315 uint8_t val, mask; 316 int ret; 317 318 ret = da903x_read(da9034_dev, info->vol_reg, &val); 319 if (ret) 320 return ret; 321 322 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 323 val = (val & mask) >> info->vol_shift; 324 325 if (val >= 8) 326 return 2700000 + info->step_uV * (val - 8); 327 328 return info->min_uV + info->step_uV * val; 329} 330 331static int da9034_list_ldo12_voltage(struct regulator_dev *rdev, 332 unsigned selector) 333{ 334 if (selector >= ARRAY_SIZE(da9034_ldo12_data)) 335 return -EINVAL; 336 return da9034_ldo12_data[selector] * 1000; 337} 338 339static struct regulator_ops da903x_regulator_ldo_ops = { 340 .set_voltage = da903x_set_ldo_voltage, 341 .get_voltage = da903x_get_voltage, 342 .list_voltage = da903x_list_voltage, 343 .enable = da903x_enable, 344 .disable = da903x_disable, 345 .is_enabled = da903x_is_enabled, 346}; 347 348/* NOTE: this is dedicated for the insane DA9030 LDO14 */ 349static struct regulator_ops da9030_regulator_ldo14_ops = { 350 .set_voltage = da9030_set_ldo14_voltage, 351 .get_voltage = da9030_get_ldo14_voltage, 352 .list_voltage = da903x_list_voltage, 353 .enable = da903x_enable, 354 .disable = da903x_disable, 355 .is_enabled = da903x_is_enabled, 356}; 357 358/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */ 359static struct regulator_ops da9030_regulator_ldo1_15_ops = { 360 .set_voltage = da9030_set_ldo1_15_voltage, 361 .get_voltage = da903x_get_voltage, 362 .list_voltage = da903x_list_voltage, 363 .enable = da903x_enable, 364 .disable = da903x_disable, 365 .is_enabled = da903x_is_enabled, 366}; 367 368static struct regulator_ops da9034_regulator_dvc_ops = { 369 .set_voltage = da9034_set_dvc_voltage, 370 .get_voltage = da903x_get_voltage, 371 .list_voltage = da903x_list_voltage, 372 .enable = da903x_enable, 373 .disable = da903x_disable, 374 .is_enabled = da903x_is_enabled, 375}; 376 377/* NOTE: this is dedicated for the insane LDO12 */ 378static struct regulator_ops da9034_regulator_ldo12_ops = { 379 .set_voltage = da9034_set_ldo12_voltage, 380 .get_voltage = da9034_get_ldo12_voltage, 381 .list_voltage = da9034_list_ldo12_voltage, 382 .enable = da903x_enable, 383 .disable = da903x_disable, 384 .is_enabled = da903x_is_enabled, 385}; 386 387#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \ 388{ \ 389 .desc = { \ 390 .name = "LDO" #_id, \ 391 .ops = &da903x_regulator_ldo_ops, \ 392 .type = REGULATOR_VOLTAGE, \ 393 .id = _pmic##_ID_LDO##_id, \ 394 .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ 395 .owner = THIS_MODULE, \ 396 }, \ 397 .min_uV = (min) * 1000, \ 398 .max_uV = (max) * 1000, \ 399 .step_uV = (step) * 1000, \ 400 .vol_reg = _pmic##_##vreg, \ 401 .vol_shift = (shift), \ 402 .vol_nbits = (nbits), \ 403 .enable_reg = _pmic##_##ereg, \ 404 .enable_bit = (ebit), \ 405} 406 407#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ 408{ \ 409 .desc = { \ 410 .name = #_id, \ 411 .ops = &da9034_regulator_dvc_ops, \ 412 .type = REGULATOR_VOLTAGE, \ 413 .id = _pmic##_ID_##_id, \ 414 .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ 415 .owner = THIS_MODULE, \ 416 }, \ 417 .min_uV = (min) * 1000, \ 418 .max_uV = (max) * 1000, \ 419 .step_uV = (step) * 1000, \ 420 .vol_reg = _pmic##_##vreg, \ 421 .vol_shift = (0), \ 422 .vol_nbits = (nbits), \ 423 .update_reg = _pmic##_##ureg, \ 424 .update_bit = (ubit), \ 425 .enable_reg = _pmic##_##ereg, \ 426 .enable_bit = (ebit), \ 427} 428 429#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ 430 DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit) 431 432#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ 433 DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit) 434 435#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ 436 DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \ 437 ereg, ebit) 438 439#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ 440 DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \ 441 ereg, ebit) 442 443#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ 444 DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \ 445 ereg, ebit) 446 447static struct da903x_regulator_info da903x_regulator_info[] = { 448 /* DA9030 */ 449 DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0), 450 451 DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1), 452 DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2), 453 DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3), 454 DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4), 455 DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5), 456 DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6), 457 DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7), 458 DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0), 459 DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1), 460 DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2), 461 DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3), 462 DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4), 463 DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4), 464 DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5), 465 DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6), 466 DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7), 467 DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2), 468 DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1), 469 DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */ 470 471 /* DA9034 */ 472 DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0), 473 DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1), 474 DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2), 475 DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4), 476 477 DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5), 478 DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6), 479 DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0), 480 DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1), 481 DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2), 482 DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3), 483 DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4), 484 DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5), 485 DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6), 486 DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7), 487 DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0), 488 DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1), 489 DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */ 490 491 /* DA9035 */ 492 DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3), 493}; 494 495static inline struct da903x_regulator_info *find_regulator_info(int id) 496{ 497 struct da903x_regulator_info *ri; 498 int i; 499 500 for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) { 501 ri = &da903x_regulator_info[i]; 502 if (ri->desc.id == id) 503 return ri; 504 } 505 return NULL; 506} 507 508static int __devinit da903x_regulator_probe(struct platform_device *pdev) 509{ 510 struct da903x_regulator_info *ri = NULL; 511 struct regulator_dev *rdev; 512 513 ri = find_regulator_info(pdev->id); 514 if (ri == NULL) { 515 dev_err(&pdev->dev, "invalid regulator ID specified\n"); 516 return -EINVAL; 517 } 518 519 if (ri->desc.id == DA9034_ID_LDO12) { 520 ri->desc.ops = &da9034_regulator_ldo12_ops; 521 ri->desc.n_voltages = ARRAY_SIZE(da9034_ldo12_data); 522 } 523 524 if (ri->desc.id == DA9030_ID_LDO14) 525 ri->desc.ops = &da9030_regulator_ldo14_ops; 526 527 if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15) 528 ri->desc.ops = &da9030_regulator_ldo1_15_ops; 529 530 rdev = regulator_register(&ri->desc, &pdev->dev, 531 pdev->dev.platform_data, ri); 532 if (IS_ERR(rdev)) { 533 dev_err(&pdev->dev, "failed to register regulator %s\n", 534 ri->desc.name); 535 return PTR_ERR(rdev); 536 } 537 538 platform_set_drvdata(pdev, rdev); 539 return 0; 540} 541 542static int __devexit da903x_regulator_remove(struct platform_device *pdev) 543{ 544 struct regulator_dev *rdev = platform_get_drvdata(pdev); 545 546 regulator_unregister(rdev); 547 return 0; 548} 549 550static struct platform_driver da903x_regulator_driver = { 551 .driver = { 552 .name = "da903x-regulator", 553 .owner = THIS_MODULE, 554 }, 555 .probe = da903x_regulator_probe, 556 .remove = __devexit_p(da903x_regulator_remove), 557}; 558 559static int __init da903x_regulator_init(void) 560{ 561 return platform_driver_register(&da903x_regulator_driver); 562} 563subsys_initcall(da903x_regulator_init); 564 565static void __exit da903x_regulator_exit(void) 566{ 567 platform_driver_unregister(&da903x_regulator_driver); 568} 569module_exit(da903x_regulator_exit); 570 571MODULE_LICENSE("GPL"); 572MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>" 573 "Mike Rapoport <mike@compulab.co.il>"); 574MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC"); 575MODULE_ALIAS("platform:da903x-regulator"); 576