1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Regulators driver for Dialog Semiconductor DA903x 4 // 5 // Copyright (C) 2006-2008 Marvell International Ltd. 6 // Copyright (C) 2008 Compulab Ltd. 7 8 #include <linux/kernel.h> 9 #include <linux/init.h> 10 #include <linux/err.h> 11 #include <linux/module.h> 12 #include <linux/platform_device.h> 13 #include <linux/regulator/driver.h> 14 #include <linux/regulator/machine.h> 15 #include <linux/mfd/da903x.h> 16 17 /* DA9030 Registers */ 18 #define DA9030_INVAL (-1) 19 #define DA9030_LDO1011 (0x10) 20 #define DA9030_LDO15 (0x11) 21 #define DA9030_LDO1416 (0x12) 22 #define DA9030_LDO1819 (0x13) 23 #define DA9030_LDO17 (0x14) 24 #define DA9030_BUCK2DVM1 (0x15) 25 #define DA9030_BUCK2DVM2 (0x16) 26 #define DA9030_RCTL11 (0x17) 27 #define DA9030_RCTL21 (0x18) 28 #define DA9030_LDO1 (0x90) 29 #define DA9030_LDO23 (0x91) 30 #define DA9030_LDO45 (0x92) 31 #define DA9030_LDO6 (0x93) 32 #define DA9030_LDO78 (0x94) 33 #define DA9030_LDO912 (0x95) 34 #define DA9030_BUCK (0x96) 35 #define DA9030_RCTL12 (0x97) 36 #define DA9030_RCTL22 (0x98) 37 #define DA9030_LDO_UNLOCK (0xa0) 38 #define DA9030_LDO_UNLOCK_MASK (0xe0) 39 #define DA9034_OVER1 (0x10) 40 41 /* DA9034 Registers */ 42 #define DA9034_INVAL (-1) 43 #define DA9034_OVER2 (0x11) 44 #define DA9034_OVER3 (0x12) 45 #define DA9034_LDO643 (0x13) 46 #define DA9034_LDO987 (0x14) 47 #define DA9034_LDO1110 (0x15) 48 #define DA9034_LDO1312 (0x16) 49 #define DA9034_LDO1514 (0x17) 50 #define DA9034_VCC1 (0x20) 51 #define DA9034_ADTV1 (0x23) 52 #define DA9034_ADTV2 (0x24) 53 #define DA9034_AVRC (0x25) 54 #define DA9034_CDTV1 (0x26) 55 #define DA9034_CDTV2 (0x27) 56 #define DA9034_CVRC (0x28) 57 #define DA9034_SDTV1 (0x29) 58 #define DA9034_SDTV2 (0x2a) 59 #define DA9034_SVRC (0x2b) 60 #define DA9034_MDTV1 (0x32) 61 #define DA9034_MDTV2 (0x33) 62 #define DA9034_MVRC (0x34) 63 64 /* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */ 65 #define DA9035_OVER3 (0x12) 66 #define DA9035_VCC2 (0x1f) 67 #define DA9035_3DTV1 (0x2c) 68 #define DA9035_3DTV2 (0x2d) 69 #define DA9035_3VRC (0x2e) 70 #define DA9035_AUTOSKIP (0x2f) 71 72 struct da903x_regulator_info { 73 struct regulator_desc desc; 74 75 int max_uV; 76 int vol_reg; 77 int vol_shift; 78 int vol_nbits; 79 int update_reg; 80 int update_bit; 81 int enable_reg; 82 int enable_bit; 83 }; 84 85 static inline struct device *to_da903x_dev(struct regulator_dev *rdev) 86 { 87 return rdev_get_dev(rdev)->parent->parent; 88 } 89 90 static inline int check_range(struct da903x_regulator_info *info, 91 int min_uV, int max_uV) 92 { 93 if (min_uV < info->desc.min_uV || min_uV > info->max_uV) 94 return -EINVAL; 95 96 return 0; 97 } 98 99 /* DA9030/DA9034 common operations */ 100 static int da903x_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) 101 { 102 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 103 struct device *da9034_dev = to_da903x_dev(rdev); 104 uint8_t val, mask; 105 106 if (rdev->desc->n_voltages == 1) 107 return -EINVAL; 108 109 val = selector << info->vol_shift; 110 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 111 112 return da903x_update(da9034_dev, info->vol_reg, val, mask); 113 } 114 115 static int da903x_get_voltage_sel(struct regulator_dev *rdev) 116 { 117 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 118 struct device *da9034_dev = to_da903x_dev(rdev); 119 uint8_t val, mask; 120 int ret; 121 122 if (rdev->desc->n_voltages == 1) 123 return 0; 124 125 ret = da903x_read(da9034_dev, info->vol_reg, &val); 126 if (ret) 127 return ret; 128 129 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 130 val = (val & mask) >> info->vol_shift; 131 132 return val; 133 } 134 135 static int da903x_enable(struct regulator_dev *rdev) 136 { 137 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 138 struct device *da9034_dev = to_da903x_dev(rdev); 139 140 return da903x_set_bits(da9034_dev, info->enable_reg, 141 1 << info->enable_bit); 142 } 143 144 static int da903x_disable(struct regulator_dev *rdev) 145 { 146 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 147 struct device *da9034_dev = to_da903x_dev(rdev); 148 149 return da903x_clr_bits(da9034_dev, info->enable_reg, 150 1 << info->enable_bit); 151 } 152 153 static int da903x_is_enabled(struct regulator_dev *rdev) 154 { 155 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 156 struct device *da9034_dev = to_da903x_dev(rdev); 157 uint8_t reg_val; 158 int ret; 159 160 ret = da903x_read(da9034_dev, info->enable_reg, ®_val); 161 if (ret) 162 return ret; 163 164 return !!(reg_val & (1 << info->enable_bit)); 165 } 166 167 /* DA9030 specific operations */ 168 static int da9030_set_ldo1_15_voltage_sel(struct regulator_dev *rdev, 169 unsigned selector) 170 { 171 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 172 struct device *da903x_dev = to_da903x_dev(rdev); 173 uint8_t val, mask; 174 int ret; 175 176 val = selector << info->vol_shift; 177 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 178 val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */ 179 mask |= DA9030_LDO_UNLOCK_MASK; 180 181 /* write twice */ 182 ret = da903x_update(da903x_dev, info->vol_reg, val, mask); 183 if (ret) 184 return ret; 185 186 return da903x_update(da903x_dev, info->vol_reg, val, mask); 187 } 188 189 static int da9030_map_ldo14_voltage(struct regulator_dev *rdev, 190 int min_uV, int max_uV) 191 { 192 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 193 int thresh, sel; 194 195 if (check_range(info, min_uV, max_uV)) { 196 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); 197 return -EINVAL; 198 } 199 200 thresh = (info->max_uV + info->desc.min_uV) / 2; 201 if (min_uV < thresh) { 202 sel = DIV_ROUND_UP(thresh - min_uV, info->desc.uV_step); 203 sel |= 0x4; 204 } else { 205 sel = DIV_ROUND_UP(min_uV - thresh, info->desc.uV_step); 206 } 207 208 return sel; 209 } 210 211 static int da9030_list_ldo14_voltage(struct regulator_dev *rdev, 212 unsigned selector) 213 { 214 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 215 int volt; 216 217 if (selector & 0x4) 218 volt = rdev->desc->min_uV + 219 rdev->desc->uV_step * (3 - (selector & ~0x4)); 220 else 221 volt = (info->max_uV + rdev->desc->min_uV) / 2 + 222 rdev->desc->uV_step * (selector & ~0x4); 223 224 if (volt > info->max_uV) 225 return -EINVAL; 226 227 return volt; 228 } 229 230 /* DA9034 specific operations */ 231 static int da9034_set_dvc_voltage_sel(struct regulator_dev *rdev, 232 unsigned selector) 233 { 234 struct da903x_regulator_info *info = rdev_get_drvdata(rdev); 235 struct device *da9034_dev = to_da903x_dev(rdev); 236 uint8_t val, mask; 237 int ret; 238 239 val = selector << info->vol_shift; 240 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; 241 242 ret = da903x_update(da9034_dev, info->vol_reg, val, mask); 243 if (ret) 244 return ret; 245 246 ret = da903x_set_bits(da9034_dev, info->update_reg, 247 1 << info->update_bit); 248 return ret; 249 } 250 251 static const struct linear_range da9034_ldo12_ranges[] = { 252 REGULATOR_LINEAR_RANGE(1700000, 0, 7, 50000), 253 REGULATOR_LINEAR_RANGE(2700000, 8, 15, 50000), 254 }; 255 256 static const struct regulator_ops da903x_regulator_ldo_ops = { 257 .set_voltage_sel = da903x_set_voltage_sel, 258 .get_voltage_sel = da903x_get_voltage_sel, 259 .list_voltage = regulator_list_voltage_linear, 260 .map_voltage = regulator_map_voltage_linear, 261 .enable = da903x_enable, 262 .disable = da903x_disable, 263 .is_enabled = da903x_is_enabled, 264 }; 265 266 /* NOTE: this is dedicated for the insane DA9030 LDO14 */ 267 static const struct regulator_ops da9030_regulator_ldo14_ops = { 268 .set_voltage_sel = da903x_set_voltage_sel, 269 .get_voltage_sel = da903x_get_voltage_sel, 270 .list_voltage = da9030_list_ldo14_voltage, 271 .map_voltage = da9030_map_ldo14_voltage, 272 .enable = da903x_enable, 273 .disable = da903x_disable, 274 .is_enabled = da903x_is_enabled, 275 }; 276 277 /* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */ 278 static const struct regulator_ops da9030_regulator_ldo1_15_ops = { 279 .set_voltage_sel = da9030_set_ldo1_15_voltage_sel, 280 .get_voltage_sel = da903x_get_voltage_sel, 281 .list_voltage = regulator_list_voltage_linear, 282 .map_voltage = regulator_map_voltage_linear, 283 .enable = da903x_enable, 284 .disable = da903x_disable, 285 .is_enabled = da903x_is_enabled, 286 }; 287 288 static const struct regulator_ops da9034_regulator_dvc_ops = { 289 .set_voltage_sel = da9034_set_dvc_voltage_sel, 290 .get_voltage_sel = da903x_get_voltage_sel, 291 .list_voltage = regulator_list_voltage_linear, 292 .map_voltage = regulator_map_voltage_linear, 293 .enable = da903x_enable, 294 .disable = da903x_disable, 295 .is_enabled = da903x_is_enabled, 296 }; 297 298 /* NOTE: this is dedicated for the insane LDO12 */ 299 static const struct regulator_ops da9034_regulator_ldo12_ops = { 300 .set_voltage_sel = da903x_set_voltage_sel, 301 .get_voltage_sel = da903x_get_voltage_sel, 302 .list_voltage = regulator_list_voltage_linear_range, 303 .map_voltage = regulator_map_voltage_linear_range, 304 .enable = da903x_enable, 305 .disable = da903x_disable, 306 .is_enabled = da903x_is_enabled, 307 }; 308 309 #define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \ 310 { \ 311 .desc = { \ 312 .name = "LDO" #_id, \ 313 .ops = &da903x_regulator_ldo_ops, \ 314 .type = REGULATOR_VOLTAGE, \ 315 .id = _pmic##_ID_LDO##_id, \ 316 .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ 317 .owner = THIS_MODULE, \ 318 .min_uV = (min) * 1000, \ 319 .uV_step = (step) * 1000, \ 320 }, \ 321 .max_uV = (max) * 1000, \ 322 .vol_reg = _pmic##_##vreg, \ 323 .vol_shift = (shift), \ 324 .vol_nbits = (nbits), \ 325 .enable_reg = _pmic##_##ereg, \ 326 .enable_bit = (ebit), \ 327 } 328 329 #define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ 330 { \ 331 .desc = { \ 332 .name = #_id, \ 333 .ops = &da9034_regulator_dvc_ops, \ 334 .type = REGULATOR_VOLTAGE, \ 335 .id = _pmic##_ID_##_id, \ 336 .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ 337 .owner = THIS_MODULE, \ 338 .min_uV = (min) * 1000, \ 339 .uV_step = (step) * 1000, \ 340 }, \ 341 .max_uV = (max) * 1000, \ 342 .vol_reg = _pmic##_##vreg, \ 343 .vol_shift = (0), \ 344 .vol_nbits = (nbits), \ 345 .update_reg = _pmic##_##ureg, \ 346 .update_bit = (ubit), \ 347 .enable_reg = _pmic##_##ereg, \ 348 .enable_bit = (ebit), \ 349 } 350 351 #define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ 352 DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit) 353 354 #define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ 355 DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit) 356 357 #define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ 358 DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \ 359 ereg, ebit) 360 361 #define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ 362 DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \ 363 ereg, ebit) 364 365 #define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ 366 DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \ 367 ereg, ebit) 368 369 static struct da903x_regulator_info da903x_regulator_info[] = { 370 /* DA9030 */ 371 DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0), 372 373 DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1), 374 DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2), 375 DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3), 376 DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4), 377 DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5), 378 DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6), 379 DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7), 380 DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0), 381 DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1), 382 DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2), 383 DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3), 384 DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4), 385 DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4), 386 DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5), 387 DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6), 388 DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7), 389 DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2), 390 DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1), 391 DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */ 392 393 /* DA9034 */ 394 DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0), 395 DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1), 396 DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2), 397 DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4), 398 399 DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5), 400 DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6), 401 DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0), 402 DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1), 403 DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2), 404 DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3), 405 DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4), 406 DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5), 407 DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6), 408 DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7), 409 DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0), 410 DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1), 411 DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */ 412 413 /* DA9035 */ 414 DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3), 415 }; 416 417 static inline struct da903x_regulator_info *find_regulator_info(int id) 418 { 419 struct da903x_regulator_info *ri; 420 int i; 421 422 for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) { 423 ri = &da903x_regulator_info[i]; 424 if (ri->desc.id == id) 425 return ri; 426 } 427 return NULL; 428 } 429 430 static int da903x_regulator_probe(struct platform_device *pdev) 431 { 432 struct da903x_regulator_info *ri = NULL; 433 struct regulator_dev *rdev; 434 struct regulator_config config = { }; 435 436 ri = find_regulator_info(pdev->id); 437 if (ri == NULL) { 438 dev_err(&pdev->dev, "invalid regulator ID specified\n"); 439 return -EINVAL; 440 } 441 442 /* Workaround for the weird LDO12 voltage setting */ 443 if (ri->desc.id == DA9034_ID_LDO12) { 444 ri->desc.ops = &da9034_regulator_ldo12_ops; 445 ri->desc.n_voltages = 16; 446 ri->desc.linear_ranges = da9034_ldo12_ranges; 447 ri->desc.n_linear_ranges = ARRAY_SIZE(da9034_ldo12_ranges); 448 } 449 450 if (ri->desc.id == DA9030_ID_LDO14) 451 ri->desc.ops = &da9030_regulator_ldo14_ops; 452 453 if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15) 454 ri->desc.ops = &da9030_regulator_ldo1_15_ops; 455 456 config.dev = &pdev->dev; 457 config.init_data = dev_get_platdata(&pdev->dev); 458 config.driver_data = ri; 459 460 rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config); 461 if (IS_ERR(rdev)) { 462 dev_err(&pdev->dev, "failed to register regulator %s\n", 463 ri->desc.name); 464 return PTR_ERR(rdev); 465 } 466 467 platform_set_drvdata(pdev, rdev); 468 return 0; 469 } 470 471 static struct platform_driver da903x_regulator_driver = { 472 .driver = { 473 .name = "da903x-regulator", 474 }, 475 .probe = da903x_regulator_probe, 476 }; 477 478 static int __init da903x_regulator_init(void) 479 { 480 return platform_driver_register(&da903x_regulator_driver); 481 } 482 subsys_initcall(da903x_regulator_init); 483 484 static void __exit da903x_regulator_exit(void) 485 { 486 platform_driver_unregister(&da903x_regulator_driver); 487 } 488 module_exit(da903x_regulator_exit); 489 490 MODULE_LICENSE("GPL"); 491 MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>" 492 "Mike Rapoport <mike@compulab.co.il>"); 493 MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC"); 494 MODULE_ALIAS("platform:da903x-regulator"); 495