| 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | // |
| 3 | // Regulator driver for DA9063 PMIC series |
| 4 | // |
| 5 | // Copyright 2012 Dialog Semiconductors Ltd. |
| 6 | // Copyright 2013 Philipp Zabel, Pengutronix |
| 7 | // |
| 8 | // Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com> |
| 9 | |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/err.h> |
| 14 | #include <linux/slab.h> |
| 15 | #include <linux/of.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/regmap.h> |
| 18 | #include <linux/regulator/driver.h> |
| 19 | #include <linux/regulator/machine.h> |
| 20 | #include <linux/regulator/of_regulator.h> |
| 21 | #include <linux/mfd/da9063/core.h> |
| 22 | #include <linux/mfd/da9063/registers.h> |
| 23 | |
| 24 | |
| 25 | /* Definition for registering regmap bit fields using a mask */ |
| 26 | #define BFIELD(_reg, _mask) \ |
| 27 | REG_FIELD(_reg, __builtin_ffs((int)_mask) - 1, \ |
| 28 | sizeof(unsigned int) * 8 - __builtin_clz((_mask)) - 1) |
| 29 | |
| 30 | /* DA9063 and DA9063L regulator IDs */ |
| 31 | enum { |
| 32 | /* BUCKs */ |
| 33 | DA9063_ID_BCORE1, |
| 34 | DA9063_ID_BCORE2, |
| 35 | DA9063_ID_BPRO, |
| 36 | DA9063_ID_BMEM, |
| 37 | DA9063_ID_BIO, |
| 38 | DA9063_ID_BPERI, |
| 39 | |
| 40 | /* BCORE1 and BCORE2 in merged mode */ |
| 41 | DA9063_ID_BCORES_MERGED, |
| 42 | /* BMEM and BIO in merged mode */ |
| 43 | DA9063_ID_BMEM_BIO_MERGED, |
| 44 | /* When two BUCKs are merged, they cannot be reused separately */ |
| 45 | |
| 46 | /* LDOs on both DA9063 and DA9063L */ |
| 47 | DA9063_ID_LDO3, |
| 48 | DA9063_ID_LDO7, |
| 49 | DA9063_ID_LDO8, |
| 50 | DA9063_ID_LDO9, |
| 51 | DA9063_ID_LDO11, |
| 52 | |
| 53 | /* DA9063-only LDOs */ |
| 54 | DA9063_ID_LDO1, |
| 55 | DA9063_ID_LDO2, |
| 56 | DA9063_ID_LDO4, |
| 57 | DA9063_ID_LDO5, |
| 58 | DA9063_ID_LDO6, |
| 59 | DA9063_ID_LDO10, |
| 60 | }; |
| 61 | |
| 62 | /* Old regulator platform data */ |
| 63 | struct da9063_regulator_data { |
| 64 | int id; |
| 65 | struct regulator_init_data *initdata; |
| 66 | }; |
| 67 | |
| 68 | struct da9063_regulators_pdata { |
| 69 | unsigned int n_regulators; |
| 70 | struct da9063_regulator_data *regulator_data; |
| 71 | }; |
| 72 | |
| 73 | /* Regulator capabilities and registers description */ |
| 74 | struct da9063_regulator_info { |
| 75 | struct regulator_desc desc; |
| 76 | |
| 77 | /* DA9063 main register fields */ |
| 78 | struct reg_field mode; /* buck mode of operation */ |
| 79 | struct reg_field suspend; |
| 80 | struct reg_field sleep; |
| 81 | struct reg_field suspend_sleep; |
| 82 | unsigned int suspend_vsel_reg; |
| 83 | |
| 84 | /* DA9063 event detection bit */ |
| 85 | struct reg_field oc_event; |
| 86 | |
| 87 | /* DA9063 voltage monitor bit */ |
| 88 | struct reg_field vmon; |
| 89 | }; |
| 90 | |
| 91 | /* Macros for LDO */ |
| 92 | #define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ |
| 93 | .desc.id = chip##_ID_##regl_name, \ |
| 94 | .desc.name = __stringify(chip##_##regl_name), \ |
| 95 | .desc.ops = &da9063_ldo_ops, \ |
| 96 | .desc.min_uV = (min_mV) * 1000, \ |
| 97 | .desc.uV_step = (step_mV) * 1000, \ |
| 98 | .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1 \ |
| 99 | + (DA9063_V##regl_name##_BIAS)), \ |
| 100 | .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ |
| 101 | .desc.enable_mask = DA9063_LDO_EN, \ |
| 102 | .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ |
| 103 | .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ |
| 104 | .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ |
| 105 | .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ |
| 106 | .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_LDO_CONF), \ |
| 107 | .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ |
| 108 | .suspend_vsel_reg = DA9063_REG_V##regl_name##_B |
| 109 | |
| 110 | /* Macros for voltage DC/DC converters (BUCKs) */ |
| 111 | #define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \ |
| 112 | creg, cmask) \ |
| 113 | .desc.id = chip##_ID_##regl_name, \ |
| 114 | .desc.name = __stringify(chip##_##regl_name), \ |
| 115 | .desc.ops = &da9063_buck_ops, \ |
| 116 | .desc.min_uV = (min_mV) * 1000, \ |
| 117 | .desc.uV_step = (step_mV) * 1000, \ |
| 118 | .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ |
| 119 | .desc.csel_reg = (creg), \ |
| 120 | .desc.csel_mask = (cmask), \ |
| 121 | .desc.curr_table = limits_array, \ |
| 122 | .desc.n_current_limits = ARRAY_SIZE(limits_array) |
| 123 | |
| 124 | #define DA9063_BUCK_COMMON_FIELDS(regl_name) \ |
| 125 | .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ |
| 126 | .desc.enable_mask = DA9063_BUCK_EN, \ |
| 127 | .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ |
| 128 | .desc.vsel_mask = DA9063_VBUCK_MASK, \ |
| 129 | .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ |
| 130 | .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ |
| 131 | .suspend = BFIELD(DA9063_REG_##regl_name##_CONT, DA9063_BUCK_CONF), \ |
| 132 | .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ |
| 133 | .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ |
| 134 | .mode = BFIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK) |
| 135 | |
| 136 | /* Defines asignment of regulators info table to chip model */ |
| 137 | struct da9063_dev_model { |
| 138 | const struct da9063_regulator_info *regulator_info; |
| 139 | unsigned int n_regulators; |
| 140 | enum da9063_type type; |
| 141 | }; |
| 142 | |
| 143 | /* Single regulator settings */ |
| 144 | struct da9063_regulator { |
| 145 | struct regulator_desc desc; |
| 146 | struct regulator_dev *rdev; |
| 147 | struct da9063 *hw; |
| 148 | const struct da9063_regulator_info *info; |
| 149 | |
| 150 | struct regmap_field *mode; |
| 151 | struct regmap_field *suspend; |
| 152 | struct regmap_field *sleep; |
| 153 | struct regmap_field *suspend_sleep; |
| 154 | struct regmap_field *vmon; |
| 155 | }; |
| 156 | |
| 157 | /* Encapsulates all information for the regulators driver */ |
| 158 | struct da9063_regulators { |
| 159 | unsigned int n_regulators; |
| 160 | /* Array size to be defined during init. Keep at end. */ |
| 161 | struct da9063_regulator regulator[]; |
| 162 | }; |
| 163 | |
| 164 | /* BUCK modes for DA9063 */ |
| 165 | enum { |
| 166 | BUCK_MODE_MANUAL, /* 0 */ |
| 167 | BUCK_MODE_SLEEP, /* 1 */ |
| 168 | BUCK_MODE_SYNC, /* 2 */ |
| 169 | BUCK_MODE_AUTO /* 3 */ |
| 170 | }; |
| 171 | |
| 172 | /* Regulator operations */ |
| 173 | |
| 174 | /* |
| 175 | * Current limits array (in uA) for BCORE1, BCORE2, BPRO. |
| 176 | * Entry indexes corresponds to register values. |
| 177 | */ |
| 178 | static const unsigned int da9063_buck_a_limits[] = { |
| 179 | 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, |
| 180 | 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 |
| 181 | }; |
| 182 | |
| 183 | /* |
| 184 | * Current limits array (in uA) for BMEM, BIO, BPERI. |
| 185 | * Entry indexes corresponds to register values. |
| 186 | */ |
| 187 | static const unsigned int da9063_buck_b_limits[] = { |
| 188 | 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, |
| 189 | 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 |
| 190 | }; |
| 191 | |
| 192 | /* |
| 193 | * Current limits array (in uA) for merged BCORE1 and BCORE2. |
| 194 | * Entry indexes corresponds to register values. |
| 195 | */ |
| 196 | static const unsigned int da9063_bcores_merged_limits[] = { |
| 197 | 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, |
| 198 | 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 |
| 199 | }; |
| 200 | |
| 201 | /* |
| 202 | * Current limits array (in uA) for merged BMEM and BIO. |
| 203 | * Entry indexes corresponds to register values. |
| 204 | */ |
| 205 | static const unsigned int da9063_bmem_bio_merged_limits[] = { |
| 206 | 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, |
| 207 | 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 |
| 208 | }; |
| 209 | |
| 210 | static int da9063_set_xvp(struct regulator_dev *rdev, int lim_uV, int severity, bool enable) |
| 211 | { |
| 212 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 213 | struct device *dev = regl->hw->dev; |
| 214 | |
| 215 | dev_dbg(dev, "%s: lim: %d, sev: %d, en: %d\n", regl->desc.name, lim_uV, severity, enable); |
| 216 | |
| 217 | /* |
| 218 | * only support enable and disable. |
| 219 | * the da9063 offers a GPIO (GP_FB2) which is unasserted if an XV happens. |
| 220 | * therefore ignore severity here, as there might be handlers in hardware. |
| 221 | */ |
| 222 | if (lim_uV) |
| 223 | return -EINVAL; |
| 224 | |
| 225 | return regmap_field_write(regl->vmon, enable ? 1 : 0); |
| 226 | } |
| 227 | |
| 228 | static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) |
| 229 | { |
| 230 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 231 | unsigned int val; |
| 232 | |
| 233 | switch (mode) { |
| 234 | case REGULATOR_MODE_FAST: |
| 235 | val = BUCK_MODE_SYNC; |
| 236 | break; |
| 237 | case REGULATOR_MODE_NORMAL: |
| 238 | val = BUCK_MODE_AUTO; |
| 239 | break; |
| 240 | case REGULATOR_MODE_STANDBY: |
| 241 | val = BUCK_MODE_SLEEP; |
| 242 | break; |
| 243 | default: |
| 244 | return -EINVAL; |
| 245 | } |
| 246 | |
| 247 | return regmap_field_write(regl->mode, val); |
| 248 | } |
| 249 | |
| 250 | /* |
| 251 | * Bucks use single mode register field for normal operation |
| 252 | * and suspend state. |
| 253 | * There are 3 modes to map to: FAST, NORMAL, and STANDBY. |
| 254 | */ |
| 255 | |
| 256 | static unsigned int da9063_buck_get_mode(struct regulator_dev *rdev) |
| 257 | { |
| 258 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 259 | unsigned int val; |
| 260 | int ret; |
| 261 | |
| 262 | ret = regmap_field_read(regl->mode, &val); |
| 263 | if (ret < 0) |
| 264 | return ret; |
| 265 | |
| 266 | switch (val) { |
| 267 | default: |
| 268 | case BUCK_MODE_MANUAL: |
| 269 | /* Sleep flag bit decides the mode */ |
| 270 | break; |
| 271 | case BUCK_MODE_SLEEP: |
| 272 | return REGULATOR_MODE_STANDBY; |
| 273 | case BUCK_MODE_SYNC: |
| 274 | return REGULATOR_MODE_FAST; |
| 275 | case BUCK_MODE_AUTO: |
| 276 | return REGULATOR_MODE_NORMAL; |
| 277 | } |
| 278 | |
| 279 | ret = regmap_field_read(regl->sleep, &val); |
| 280 | if (ret < 0) |
| 281 | return 0; |
| 282 | |
| 283 | if (val) |
| 284 | return REGULATOR_MODE_STANDBY; |
| 285 | else |
| 286 | return REGULATOR_MODE_FAST; |
| 287 | } |
| 288 | |
| 289 | /* |
| 290 | * LDOs use sleep flags - one for normal and one for suspend state. |
| 291 | * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. |
| 292 | */ |
| 293 | |
| 294 | static int da9063_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode) |
| 295 | { |
| 296 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 297 | unsigned int val; |
| 298 | |
| 299 | switch (mode) { |
| 300 | case REGULATOR_MODE_NORMAL: |
| 301 | val = 0; |
| 302 | break; |
| 303 | case REGULATOR_MODE_STANDBY: |
| 304 | val = 1; |
| 305 | break; |
| 306 | default: |
| 307 | return -EINVAL; |
| 308 | } |
| 309 | |
| 310 | return regmap_field_write(regl->sleep, val); |
| 311 | } |
| 312 | |
| 313 | static unsigned int da9063_ldo_get_mode(struct regulator_dev *rdev) |
| 314 | { |
| 315 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 316 | int ret, val; |
| 317 | |
| 318 | ret = regmap_field_read(regl->sleep, &val); |
| 319 | if (ret < 0) |
| 320 | return 0; |
| 321 | |
| 322 | if (val) |
| 323 | return REGULATOR_MODE_STANDBY; |
| 324 | else |
| 325 | return REGULATOR_MODE_NORMAL; |
| 326 | } |
| 327 | |
| 328 | static int da9063_buck_get_status(struct regulator_dev *rdev) |
| 329 | { |
| 330 | int ret = regulator_is_enabled_regmap(rdev); |
| 331 | |
| 332 | if (ret == 0) { |
| 333 | ret = REGULATOR_STATUS_OFF; |
| 334 | } else if (ret > 0) { |
| 335 | ret = da9063_buck_get_mode(rdev); |
| 336 | if (ret > 0) |
| 337 | ret = regulator_mode_to_status(ret); |
| 338 | else if (ret == 0) |
| 339 | ret = -EIO; |
| 340 | } |
| 341 | |
| 342 | return ret; |
| 343 | } |
| 344 | |
| 345 | static int da9063_ldo_get_status(struct regulator_dev *rdev) |
| 346 | { |
| 347 | int ret = regulator_is_enabled_regmap(rdev); |
| 348 | |
| 349 | if (ret == 0) { |
| 350 | ret = REGULATOR_STATUS_OFF; |
| 351 | } else if (ret > 0) { |
| 352 | ret = da9063_ldo_get_mode(rdev); |
| 353 | if (ret > 0) |
| 354 | ret = regulator_mode_to_status(ret); |
| 355 | else if (ret == 0) |
| 356 | ret = -EIO; |
| 357 | } |
| 358 | |
| 359 | return ret; |
| 360 | } |
| 361 | |
| 362 | static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) |
| 363 | { |
| 364 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 365 | const struct da9063_regulator_info *rinfo = regl->info; |
| 366 | int ret, sel; |
| 367 | |
| 368 | sel = regulator_map_voltage_linear(rdev, uV, uV); |
| 369 | if (sel < 0) |
| 370 | return sel; |
| 371 | |
| 372 | sel <<= ffs(rdev->desc->vsel_mask) - 1; |
| 373 | |
| 374 | ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, |
| 375 | rdev->desc->vsel_mask, sel); |
| 376 | |
| 377 | return ret; |
| 378 | } |
| 379 | |
| 380 | static int da9063_suspend_enable(struct regulator_dev *rdev) |
| 381 | { |
| 382 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 383 | |
| 384 | return regmap_field_write(regl->suspend, 1); |
| 385 | } |
| 386 | |
| 387 | static int da9063_suspend_disable(struct regulator_dev *rdev) |
| 388 | { |
| 389 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 390 | |
| 391 | return regmap_field_write(regl->suspend, 0); |
| 392 | } |
| 393 | |
| 394 | static int da9063_buck_set_suspend_mode(struct regulator_dev *rdev, |
| 395 | unsigned int mode) |
| 396 | { |
| 397 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 398 | int val; |
| 399 | |
| 400 | switch (mode) { |
| 401 | case REGULATOR_MODE_FAST: |
| 402 | val = BUCK_MODE_SYNC; |
| 403 | break; |
| 404 | case REGULATOR_MODE_NORMAL: |
| 405 | val = BUCK_MODE_AUTO; |
| 406 | break; |
| 407 | case REGULATOR_MODE_STANDBY: |
| 408 | val = BUCK_MODE_SLEEP; |
| 409 | break; |
| 410 | default: |
| 411 | return -EINVAL; |
| 412 | } |
| 413 | |
| 414 | return regmap_field_write(regl->mode, val); |
| 415 | } |
| 416 | |
| 417 | static int da9063_ldo_set_suspend_mode(struct regulator_dev *rdev, |
| 418 | unsigned int mode) |
| 419 | { |
| 420 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 421 | unsigned int val; |
| 422 | |
| 423 | switch (mode) { |
| 424 | case REGULATOR_MODE_NORMAL: |
| 425 | val = 0; |
| 426 | break; |
| 427 | case REGULATOR_MODE_STANDBY: |
| 428 | val = 1; |
| 429 | break; |
| 430 | default: |
| 431 | return -EINVAL; |
| 432 | } |
| 433 | |
| 434 | return regmap_field_write(regl->suspend_sleep, val); |
| 435 | } |
| 436 | |
| 437 | static unsigned int da9063_get_overdrive_mask(const struct regulator_desc *desc) |
| 438 | { |
| 439 | switch (desc->id) { |
| 440 | case DA9063_ID_BCORES_MERGED: |
| 441 | case DA9063_ID_BCORE1: |
| 442 | return DA9063_BCORE1_OD; |
| 443 | case DA9063_ID_BCORE2: |
| 444 | return DA9063_BCORE2_OD; |
| 445 | case DA9063_ID_BPRO: |
| 446 | return DA9063_BPRO_OD; |
| 447 | default: |
| 448 | return 0; |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | static int da9063_buck_set_limit_set_overdrive(struct regulator_dev *rdev, |
| 453 | int min_uA, int max_uA, |
| 454 | unsigned int overdrive_mask) |
| 455 | { |
| 456 | /* |
| 457 | * When enabling overdrive, do it before changing the current limit to |
| 458 | * ensure sufficient supply throughout the switch. |
| 459 | */ |
| 460 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 461 | int ret; |
| 462 | unsigned int orig_overdrive; |
| 463 | |
| 464 | ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H, |
| 465 | &orig_overdrive); |
| 466 | if (ret < 0) |
| 467 | return ret; |
| 468 | orig_overdrive &= overdrive_mask; |
| 469 | |
| 470 | if (orig_overdrive == 0) { |
| 471 | ret = regmap_set_bits(regl->hw->regmap, DA9063_REG_CONFIG_H, |
| 472 | overdrive_mask); |
| 473 | if (ret < 0) |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | ret = regulator_set_current_limit_regmap(rdev, min_uA / 2, max_uA / 2); |
| 478 | if (ret < 0 && orig_overdrive == 0) |
| 479 | /* |
| 480 | * regulator_set_current_limit_regmap may have rejected the |
| 481 | * change because of unusable min_uA and/or max_uA inputs. |
| 482 | * Attempt to restore original overdrive state, ignore failure- |
| 483 | * on-failure. |
| 484 | */ |
| 485 | regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H, |
| 486 | overdrive_mask); |
| 487 | |
| 488 | return ret; |
| 489 | } |
| 490 | |
| 491 | static int da9063_buck_set_limit_clear_overdrive(struct regulator_dev *rdev, |
| 492 | int min_uA, int max_uA, |
| 493 | unsigned int overdrive_mask) |
| 494 | { |
| 495 | /* |
| 496 | * When disabling overdrive, do it after changing the current limit to |
| 497 | * ensure sufficient supply throughout the switch. |
| 498 | */ |
| 499 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 500 | int ret, orig_limit; |
| 501 | |
| 502 | ret = regmap_read(rdev->regmap, rdev->desc->csel_reg, &orig_limit); |
| 503 | if (ret < 0) |
| 504 | return ret; |
| 505 | |
| 506 | ret = regulator_set_current_limit_regmap(rdev, min_uA, max_uA); |
| 507 | if (ret < 0) |
| 508 | return ret; |
| 509 | |
| 510 | ret = regmap_clear_bits(regl->hw->regmap, DA9063_REG_CONFIG_H, |
| 511 | overdrive_mask); |
| 512 | if (ret < 0) |
| 513 | /* |
| 514 | * Attempt to restore original current limit, ignore failure- |
| 515 | * on-failure. |
| 516 | */ |
| 517 | regmap_write(rdev->regmap, rdev->desc->csel_reg, orig_limit); |
| 518 | |
| 519 | return ret; |
| 520 | } |
| 521 | |
| 522 | static int da9063_buck_set_current_limit(struct regulator_dev *rdev, |
| 523 | int min_uA, int max_uA) |
| 524 | { |
| 525 | unsigned int overdrive_mask, n_currents; |
| 526 | |
| 527 | overdrive_mask = da9063_get_overdrive_mask(rdev->desc); |
| 528 | if (overdrive_mask) { |
| 529 | n_currents = rdev->desc->n_current_limits; |
| 530 | if (n_currents == 0) |
| 531 | return -EINVAL; |
| 532 | |
| 533 | if (max_uA > rdev->desc->curr_table[n_currents - 1]) |
| 534 | return da9063_buck_set_limit_set_overdrive(rdev, min_uA, |
| 535 | max_uA, |
| 536 | overdrive_mask); |
| 537 | |
| 538 | return da9063_buck_set_limit_clear_overdrive(rdev, min_uA, |
| 539 | max_uA, |
| 540 | overdrive_mask); |
| 541 | } |
| 542 | return regulator_set_current_limit_regmap(rdev, min_uA, max_uA); |
| 543 | } |
| 544 | |
| 545 | static int da9063_buck_get_current_limit(struct regulator_dev *rdev) |
| 546 | { |
| 547 | struct da9063_regulator *regl = rdev_get_drvdata(rdev); |
| 548 | int val, ret, limit; |
| 549 | unsigned int mask; |
| 550 | |
| 551 | limit = regulator_get_current_limit_regmap(rdev); |
| 552 | if (limit < 0) |
| 553 | return limit; |
| 554 | mask = da9063_get_overdrive_mask(rdev->desc); |
| 555 | if (mask) { |
| 556 | ret = regmap_read(regl->hw->regmap, DA9063_REG_CONFIG_H, &val); |
| 557 | if (ret < 0) |
| 558 | return ret; |
| 559 | if (val & mask) |
| 560 | limit *= 2; |
| 561 | } |
| 562 | return limit; |
| 563 | } |
| 564 | |
| 565 | static const struct regulator_ops da9063_buck_ops = { |
| 566 | .enable = regulator_enable_regmap, |
| 567 | .disable = regulator_disable_regmap, |
| 568 | .is_enabled = regulator_is_enabled_regmap, |
| 569 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 570 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 571 | .list_voltage = regulator_list_voltage_linear, |
| 572 | .set_current_limit = da9063_buck_set_current_limit, |
| 573 | .get_current_limit = da9063_buck_get_current_limit, |
| 574 | .set_mode = da9063_buck_set_mode, |
| 575 | .get_mode = da9063_buck_get_mode, |
| 576 | .get_status = da9063_buck_get_status, |
| 577 | .set_suspend_voltage = da9063_set_suspend_voltage, |
| 578 | .set_suspend_enable = da9063_suspend_enable, |
| 579 | .set_suspend_disable = da9063_suspend_disable, |
| 580 | .set_suspend_mode = da9063_buck_set_suspend_mode, |
| 581 | .set_over_voltage_protection = da9063_set_xvp, |
| 582 | .set_under_voltage_protection = da9063_set_xvp, |
| 583 | }; |
| 584 | |
| 585 | static const struct regulator_ops da9063_ldo_ops = { |
| 586 | .enable = regulator_enable_regmap, |
| 587 | .disable = regulator_disable_regmap, |
| 588 | .is_enabled = regulator_is_enabled_regmap, |
| 589 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 590 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 591 | .list_voltage = regulator_list_voltage_linear, |
| 592 | .set_mode = da9063_ldo_set_mode, |
| 593 | .get_mode = da9063_ldo_get_mode, |
| 594 | .get_status = da9063_ldo_get_status, |
| 595 | .set_suspend_voltage = da9063_set_suspend_voltage, |
| 596 | .set_suspend_enable = da9063_suspend_enable, |
| 597 | .set_suspend_disable = da9063_suspend_disable, |
| 598 | .set_suspend_mode = da9063_ldo_set_suspend_mode, |
| 599 | .set_over_voltage_protection = da9063_set_xvp, |
| 600 | .set_under_voltage_protection = da9063_set_xvp, |
| 601 | }; |
| 602 | |
| 603 | /* Info of regulators for DA9063 */ |
| 604 | static const struct da9063_regulator_info da9063_regulator_info[] = { |
| 605 | { |
| 606 | DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, |
| 607 | da9063_buck_a_limits, |
| 608 | DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), |
| 609 | DA9063_BUCK_COMMON_FIELDS(BCORE1), |
| 610 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE1_MON_EN), |
| 611 | }, |
| 612 | { |
| 613 | DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, |
| 614 | da9063_buck_a_limits, |
| 615 | DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK), |
| 616 | DA9063_BUCK_COMMON_FIELDS(BCORE2), |
| 617 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE2_MON_EN), |
| 618 | }, |
| 619 | { |
| 620 | DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, |
| 621 | da9063_buck_a_limits, |
| 622 | DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK), |
| 623 | DA9063_BUCK_COMMON_FIELDS(BPRO), |
| 624 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BPRO_MON_EN), |
| 625 | }, |
| 626 | { |
| 627 | DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, |
| 628 | da9063_buck_b_limits, |
| 629 | DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), |
| 630 | DA9063_BUCK_COMMON_FIELDS(BMEM), |
| 631 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BMEM_MON_EN), |
| 632 | }, |
| 633 | { |
| 634 | DA9063_BUCK(DA9063, BIO, 800, 20, 3340, |
| 635 | da9063_buck_b_limits, |
| 636 | DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK), |
| 637 | DA9063_BUCK_COMMON_FIELDS(BIO), |
| 638 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BIO_MON_EN), |
| 639 | }, |
| 640 | { |
| 641 | DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, |
| 642 | da9063_buck_b_limits, |
| 643 | DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK), |
| 644 | DA9063_BUCK_COMMON_FIELDS(BPERI), |
| 645 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BPERI_MON_EN), |
| 646 | }, |
| 647 | { |
| 648 | DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, |
| 649 | da9063_bcores_merged_limits, |
| 650 | DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), |
| 651 | /* BCORES_MERGED uses the same register fields as BCORE1 */ |
| 652 | DA9063_BUCK_COMMON_FIELDS(BCORE1), |
| 653 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BCORE1_MON_EN), |
| 654 | }, |
| 655 | { |
| 656 | DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, |
| 657 | da9063_bmem_bio_merged_limits, |
| 658 | DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), |
| 659 | /* BMEM_BIO_MERGED uses the same register fields as BMEM */ |
| 660 | DA9063_BUCK_COMMON_FIELDS(BMEM), |
| 661 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_4, DA9063_BMEM_MON_EN), |
| 662 | }, |
| 663 | { |
| 664 | DA9063_LDO(DA9063, LDO3, 900, 20, 3440), |
| 665 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), |
| 666 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO3_MON_EN), |
| 667 | }, |
| 668 | { |
| 669 | DA9063_LDO(DA9063, LDO7, 900, 50, 3600), |
| 670 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), |
| 671 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO7_MON_EN), |
| 672 | }, |
| 673 | { |
| 674 | DA9063_LDO(DA9063, LDO8, 900, 50, 3600), |
| 675 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), |
| 676 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO8_MON_EN), |
| 677 | }, |
| 678 | { |
| 679 | DA9063_LDO(DA9063, LDO9, 950, 50, 3600), |
| 680 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO9_MON_EN), |
| 681 | }, |
| 682 | { |
| 683 | DA9063_LDO(DA9063, LDO11, 900, 50, 3600), |
| 684 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), |
| 685 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO11_MON_EN), |
| 686 | }, |
| 687 | |
| 688 | /* The following LDOs are present only on DA9063, not on DA9063L */ |
| 689 | { |
| 690 | DA9063_LDO(DA9063, LDO1, 600, 20, 1860), |
| 691 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO1_MON_EN), |
| 692 | }, |
| 693 | { |
| 694 | DA9063_LDO(DA9063, LDO2, 600, 20, 1860), |
| 695 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO2_MON_EN), |
| 696 | }, |
| 697 | { |
| 698 | DA9063_LDO(DA9063, LDO4, 900, 20, 3440), |
| 699 | .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), |
| 700 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO4_MON_EN), |
| 701 | }, |
| 702 | { |
| 703 | DA9063_LDO(DA9063, LDO5, 900, 50, 3600), |
| 704 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO5_MON_EN), |
| 705 | }, |
| 706 | { |
| 707 | DA9063_LDO(DA9063, LDO6, 900, 50, 3600), |
| 708 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_2, DA9063_LDO6_MON_EN), |
| 709 | }, |
| 710 | |
| 711 | { |
| 712 | DA9063_LDO(DA9063, LDO10, 900, 50, 3600), |
| 713 | .vmon = BFIELD(DA9063_BB_REG_MON_REG_3, DA9063_LDO10_MON_EN), |
| 714 | }, |
| 715 | }; |
| 716 | |
| 717 | /* Link chip model with regulators info table */ |
| 718 | static struct da9063_dev_model regulators_models[] = { |
| 719 | { |
| 720 | .regulator_info = da9063_regulator_info, |
| 721 | .n_regulators = ARRAY_SIZE(da9063_regulator_info), |
| 722 | .type = PMIC_TYPE_DA9063, |
| 723 | }, |
| 724 | { |
| 725 | .regulator_info = da9063_regulator_info, |
| 726 | .n_regulators = ARRAY_SIZE(da9063_regulator_info) - 6, |
| 727 | .type = PMIC_TYPE_DA9063L, |
| 728 | }, |
| 729 | { } |
| 730 | }; |
| 731 | |
| 732 | /* Regulator interrupt handlers */ |
| 733 | static irqreturn_t da9063_ldo_lim_event(int irq, void *data) |
| 734 | { |
| 735 | struct da9063_regulators *regulators = data; |
| 736 | struct da9063 *hw = regulators->regulator[0].hw; |
| 737 | struct da9063_regulator *regl; |
| 738 | int bits, i, ret; |
| 739 | |
| 740 | ret = regmap_read(hw->regmap, DA9063_REG_STATUS_D, &bits); |
| 741 | if (ret < 0) |
| 742 | return IRQ_NONE; |
| 743 | |
| 744 | for (i = regulators->n_regulators - 1; i >= 0; i--) { |
| 745 | regl = ®ulators->regulator[i]; |
| 746 | if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) |
| 747 | continue; |
| 748 | |
| 749 | if (BIT(regl->info->oc_event.lsb) & bits) { |
| 750 | regulator_notifier_call_chain(regl->rdev, |
| 751 | REGULATOR_EVENT_OVER_CURRENT, NULL); |
| 752 | } |
| 753 | } |
| 754 | |
| 755 | return IRQ_HANDLED; |
| 756 | } |
| 757 | |
| 758 | /* |
| 759 | * Probing and Initialisation functions |
| 760 | */ |
| 761 | static const struct regulator_init_data *da9063_get_regulator_initdata( |
| 762 | const struct da9063_regulators_pdata *regl_pdata, int id) |
| 763 | { |
| 764 | int i; |
| 765 | |
| 766 | for (i = 0; i < regl_pdata->n_regulators; i++) { |
| 767 | if (id == regl_pdata->regulator_data[i].id) |
| 768 | return regl_pdata->regulator_data[i].initdata; |
| 769 | } |
| 770 | |
| 771 | return NULL; |
| 772 | } |
| 773 | |
| 774 | static int da9063_check_xvp_constraints(struct regulator_config *config) |
| 775 | { |
| 776 | struct da9063_regulator *regl = config->driver_data; |
| 777 | const struct regulation_constraints *constr = &config->init_data->constraints; |
| 778 | const struct notification_limit *uv_l = &constr->under_voltage_limits; |
| 779 | const struct notification_limit *ov_l = &constr->over_voltage_limits; |
| 780 | |
| 781 | /* make sure that only one severity is used to clarify if unchanged, enabled or disabled */ |
| 782 | if ((!!uv_l->prot + !!uv_l->err + !!uv_l->warn) > 1) { |
| 783 | dev_err(config->dev, "%s: at most one voltage monitoring severity allowed!\n", |
| 784 | regl->desc.name); |
| 785 | return -EINVAL; |
| 786 | } |
| 787 | |
| 788 | /* make sure that UV and OV monitoring is set to the same severity and value */ |
| 789 | if (uv_l->prot != ov_l->prot) { |
| 790 | dev_err(config->dev, |
| 791 | "%s: protection-microvolt: value must be equal for uv and ov!\n", |
| 792 | regl->desc.name); |
| 793 | return -EINVAL; |
| 794 | } |
| 795 | if (uv_l->err != ov_l->err) { |
| 796 | dev_err(config->dev, "%s: error-microvolt: value must be equal for uv and ov!\n", |
| 797 | regl->desc.name); |
| 798 | return -EINVAL; |
| 799 | } |
| 800 | if (uv_l->warn != ov_l->warn) { |
| 801 | dev_err(config->dev, "%s: warn-microvolt: value must be equal for uv and ov!\n", |
| 802 | regl->desc.name); |
| 803 | return -EINVAL; |
| 804 | } |
| 805 | |
| 806 | return 0; |
| 807 | } |
| 808 | |
| 809 | static struct of_regulator_match da9063_matches[] = { |
| 810 | [DA9063_ID_BCORE1] = { .name = "bcore1" }, |
| 811 | [DA9063_ID_BCORE2] = { .name = "bcore2" }, |
| 812 | [DA9063_ID_BPRO] = { .name = "bpro", }, |
| 813 | [DA9063_ID_BMEM] = { .name = "bmem", }, |
| 814 | [DA9063_ID_BIO] = { .name = "bio", }, |
| 815 | [DA9063_ID_BPERI] = { .name = "bperi", }, |
| 816 | [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, |
| 817 | [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, |
| 818 | [DA9063_ID_LDO3] = { .name = "ldo3", }, |
| 819 | [DA9063_ID_LDO7] = { .name = "ldo7", }, |
| 820 | [DA9063_ID_LDO8] = { .name = "ldo8", }, |
| 821 | [DA9063_ID_LDO9] = { .name = "ldo9", }, |
| 822 | [DA9063_ID_LDO11] = { .name = "ldo11", }, |
| 823 | /* The following LDOs are present only on DA9063, not on DA9063L */ |
| 824 | [DA9063_ID_LDO1] = { .name = "ldo1", }, |
| 825 | [DA9063_ID_LDO2] = { .name = "ldo2", }, |
| 826 | [DA9063_ID_LDO4] = { .name = "ldo4", }, |
| 827 | [DA9063_ID_LDO5] = { .name = "ldo5", }, |
| 828 | [DA9063_ID_LDO6] = { .name = "ldo6", }, |
| 829 | [DA9063_ID_LDO10] = { .name = "ldo10", }, |
| 830 | }; |
| 831 | |
| 832 | static struct da9063_regulators_pdata *da9063_parse_regulators_dt( |
| 833 | struct platform_device *pdev, |
| 834 | struct of_regulator_match **da9063_reg_matches) |
| 835 | { |
| 836 | struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); |
| 837 | struct da9063_regulators_pdata *pdata; |
| 838 | struct da9063_regulator_data *rdata; |
| 839 | struct device_node *node; |
| 840 | int da9063_matches_len = ARRAY_SIZE(da9063_matches); |
| 841 | int i, n, num; |
| 842 | |
| 843 | if (da9063->type == PMIC_TYPE_DA9063L) |
| 844 | da9063_matches_len -= 6; |
| 845 | |
| 846 | node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); |
| 847 | if (!node) { |
| 848 | dev_err(&pdev->dev, "Regulators device node not found\n"); |
| 849 | return ERR_PTR(-ENODEV); |
| 850 | } |
| 851 | |
| 852 | num = of_regulator_match(&pdev->dev, node, da9063_matches, |
| 853 | da9063_matches_len); |
| 854 | of_node_put(node); |
| 855 | if (num < 0) { |
| 856 | dev_err(&pdev->dev, "Failed to match regulators\n"); |
| 857 | return ERR_PTR(-EINVAL); |
| 858 | } |
| 859 | |
| 860 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| 861 | if (!pdata) |
| 862 | return ERR_PTR(-ENOMEM); |
| 863 | |
| 864 | pdata->regulator_data = devm_kcalloc(&pdev->dev, |
| 865 | num, sizeof(*pdata->regulator_data), |
| 866 | GFP_KERNEL); |
| 867 | if (!pdata->regulator_data) |
| 868 | return ERR_PTR(-ENOMEM); |
| 869 | pdata->n_regulators = num; |
| 870 | |
| 871 | n = 0; |
| 872 | for (i = 0; i < da9063_matches_len; i++) { |
| 873 | if (!da9063_matches[i].init_data) |
| 874 | continue; |
| 875 | |
| 876 | rdata = &pdata->regulator_data[n]; |
| 877 | rdata->id = i; |
| 878 | rdata->initdata = da9063_matches[i].init_data; |
| 879 | |
| 880 | n++; |
| 881 | } |
| 882 | |
| 883 | *da9063_reg_matches = da9063_matches; |
| 884 | return pdata; |
| 885 | } |
| 886 | |
| 887 | static int da9063_regulator_probe(struct platform_device *pdev) |
| 888 | { |
| 889 | struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); |
| 890 | struct of_regulator_match *da9063_reg_matches = NULL; |
| 891 | struct da9063_regulators_pdata *regl_pdata; |
| 892 | const struct da9063_dev_model *model; |
| 893 | struct da9063_regulators *regulators; |
| 894 | struct da9063_regulator *regl; |
| 895 | struct regulator_config config; |
| 896 | bool bcores_merged, bmem_bio_merged; |
| 897 | int id, irq, n, n_regulators, ret, val; |
| 898 | |
| 899 | regl_pdata = da9063_parse_regulators_dt(pdev, &da9063_reg_matches); |
| 900 | |
| 901 | if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { |
| 902 | dev_err(&pdev->dev, |
| 903 | "No regulators defined for the platform\n"); |
| 904 | return -ENODEV; |
| 905 | } |
| 906 | |
| 907 | /* Find regulators set for particular device model */ |
| 908 | for (model = regulators_models; model->regulator_info; model++) { |
| 909 | if (model->type == da9063->type) |
| 910 | break; |
| 911 | } |
| 912 | if (!model->regulator_info) { |
| 913 | dev_err(&pdev->dev, "Chip model not recognised (%u)\n", |
| 914 | da9063->type); |
| 915 | return -ENODEV; |
| 916 | } |
| 917 | |
| 918 | ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); |
| 919 | if (ret < 0) { |
| 920 | dev_err(&pdev->dev, |
| 921 | "Error while reading BUCKs configuration\n"); |
| 922 | return ret; |
| 923 | } |
| 924 | bcores_merged = val & DA9063_BCORE_MERGE; |
| 925 | bmem_bio_merged = val & DA9063_BUCK_MERGE; |
| 926 | |
| 927 | n_regulators = model->n_regulators; |
| 928 | if (bcores_merged) |
| 929 | n_regulators -= 2; /* remove BCORE1, BCORE2 */ |
| 930 | else |
| 931 | n_regulators--; /* remove BCORES_MERGED */ |
| 932 | if (bmem_bio_merged) |
| 933 | n_regulators -= 2; /* remove BMEM, BIO */ |
| 934 | else |
| 935 | n_regulators--; /* remove BMEM_BIO_MERGED */ |
| 936 | |
| 937 | /* Allocate memory required by usable regulators */ |
| 938 | regulators = devm_kzalloc(&pdev->dev, struct_size(regulators, |
| 939 | regulator, n_regulators), GFP_KERNEL); |
| 940 | if (!regulators) |
| 941 | return -ENOMEM; |
| 942 | |
| 943 | regulators->n_regulators = n_regulators; |
| 944 | platform_set_drvdata(pdev, regulators); |
| 945 | |
| 946 | /* Register all regulators declared in platform information */ |
| 947 | n = 0; |
| 948 | id = 0; |
| 949 | while (n < regulators->n_regulators) { |
| 950 | /* Skip regulator IDs depending on merge mode configuration */ |
| 951 | switch (id) { |
| 952 | case DA9063_ID_BCORE1: |
| 953 | case DA9063_ID_BCORE2: |
| 954 | if (bcores_merged) { |
| 955 | id++; |
| 956 | continue; |
| 957 | } |
| 958 | break; |
| 959 | case DA9063_ID_BMEM: |
| 960 | case DA9063_ID_BIO: |
| 961 | if (bmem_bio_merged) { |
| 962 | id++; |
| 963 | continue; |
| 964 | } |
| 965 | break; |
| 966 | case DA9063_ID_BCORES_MERGED: |
| 967 | if (!bcores_merged) { |
| 968 | id++; |
| 969 | continue; |
| 970 | } |
| 971 | break; |
| 972 | case DA9063_ID_BMEM_BIO_MERGED: |
| 973 | if (!bmem_bio_merged) { |
| 974 | id++; |
| 975 | continue; |
| 976 | } |
| 977 | break; |
| 978 | } |
| 979 | |
| 980 | /* Initialise regulator structure */ |
| 981 | regl = ®ulators->regulator[n]; |
| 982 | regl->hw = da9063; |
| 983 | regl->info = &model->regulator_info[id]; |
| 984 | regl->desc = regl->info->desc; |
| 985 | regl->desc.type = REGULATOR_VOLTAGE; |
| 986 | regl->desc.owner = THIS_MODULE; |
| 987 | |
| 988 | if (regl->info->mode.reg) { |
| 989 | regl->mode = devm_regmap_field_alloc(&pdev->dev, |
| 990 | da9063->regmap, regl->info->mode); |
| 991 | if (IS_ERR(regl->mode)) |
| 992 | return PTR_ERR(regl->mode); |
| 993 | } |
| 994 | |
| 995 | if (regl->info->suspend.reg) { |
| 996 | regl->suspend = devm_regmap_field_alloc(&pdev->dev, |
| 997 | da9063->regmap, regl->info->suspend); |
| 998 | if (IS_ERR(regl->suspend)) |
| 999 | return PTR_ERR(regl->suspend); |
| 1000 | } |
| 1001 | |
| 1002 | if (regl->info->sleep.reg) { |
| 1003 | regl->sleep = devm_regmap_field_alloc(&pdev->dev, |
| 1004 | da9063->regmap, regl->info->sleep); |
| 1005 | if (IS_ERR(regl->sleep)) |
| 1006 | return PTR_ERR(regl->sleep); |
| 1007 | } |
| 1008 | |
| 1009 | if (regl->info->suspend_sleep.reg) { |
| 1010 | regl->suspend_sleep = devm_regmap_field_alloc(&pdev->dev, |
| 1011 | da9063->regmap, regl->info->suspend_sleep); |
| 1012 | if (IS_ERR(regl->suspend_sleep)) |
| 1013 | return PTR_ERR(regl->suspend_sleep); |
| 1014 | } |
| 1015 | if (regl->info->vmon.reg) { |
| 1016 | regl->vmon = devm_regmap_field_alloc(&pdev->dev, |
| 1017 | da9063->regmap, regl->info->vmon); |
| 1018 | if (IS_ERR(regl->vmon)) |
| 1019 | return PTR_ERR(regl->vmon); |
| 1020 | } |
| 1021 | |
| 1022 | /* Register regulator */ |
| 1023 | memset(&config, 0, sizeof(config)); |
| 1024 | config.dev = &pdev->dev; |
| 1025 | config.init_data = da9063_get_regulator_initdata(regl_pdata, id); |
| 1026 | config.driver_data = regl; |
| 1027 | if (da9063_reg_matches) |
| 1028 | config.of_node = da9063_reg_matches[id].of_node; |
| 1029 | config.regmap = da9063->regmap; |
| 1030 | |
| 1031 | /* Checking constraints requires init_data from DT. */ |
| 1032 | if (config.init_data) { |
| 1033 | ret = da9063_check_xvp_constraints(&config); |
| 1034 | if (ret) |
| 1035 | return ret; |
| 1036 | } |
| 1037 | |
| 1038 | regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, |
| 1039 | &config); |
| 1040 | if (IS_ERR(regl->rdev)) { |
| 1041 | dev_err(&pdev->dev, |
| 1042 | "Failed to register %s regulator\n", |
| 1043 | regl->desc.name); |
| 1044 | return PTR_ERR(regl->rdev); |
| 1045 | } |
| 1046 | id++; |
| 1047 | n++; |
| 1048 | } |
| 1049 | |
| 1050 | /* LDOs overcurrent event support */ |
| 1051 | irq = platform_get_irq_byname(pdev, "LDO_LIM"); |
| 1052 | if (irq < 0) |
| 1053 | return irq; |
| 1054 | |
| 1055 | ret = devm_request_threaded_irq(&pdev->dev, irq, |
| 1056 | NULL, da9063_ldo_lim_event, |
| 1057 | IRQF_TRIGGER_LOW | IRQF_ONESHOT, |
| 1058 | "LDO_LIM", regulators); |
| 1059 | if (ret) |
| 1060 | dev_err(&pdev->dev, "Failed to request LDO_LIM IRQ.\n"); |
| 1061 | |
| 1062 | return ret; |
| 1063 | } |
| 1064 | |
| 1065 | static struct platform_driver da9063_regulator_driver = { |
| 1066 | .driver = { |
| 1067 | .name = DA9063_DRVNAME_REGULATORS, |
| 1068 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
| 1069 | }, |
| 1070 | .probe = da9063_regulator_probe, |
| 1071 | }; |
| 1072 | |
| 1073 | static int __init da9063_regulator_init(void) |
| 1074 | { |
| 1075 | return platform_driver_register(&da9063_regulator_driver); |
| 1076 | } |
| 1077 | subsys_initcall(da9063_regulator_init); |
| 1078 | |
| 1079 | static void __exit da9063_regulator_cleanup(void) |
| 1080 | { |
| 1081 | platform_driver_unregister(&da9063_regulator_driver); |
| 1082 | } |
| 1083 | module_exit(da9063_regulator_cleanup); |
| 1084 | |
| 1085 | |
| 1086 | /* Module information */ |
| 1087 | MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>"); |
| 1088 | MODULE_DESCRIPTION("DA9063 regulators driver"); |
| 1089 | MODULE_LICENSE("GPL"); |
| 1090 | MODULE_ALIAS("platform:" DA9063_DRVNAME_REGULATORS); |