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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 | // SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2016 * Texas Instruments Incorporated, <www.ti.com> * * Keerthy <j-keerthy@ti.com> */ #include <fdtdec.h> #include <errno.h> #include <dm.h> #include <power/pmic.h> #include <power/regulator.h> #include <power/palmas.h> #define REGULATOR_ON 0x1 #define REGULATOR_OFF 0x0 #define SMPS_MODE_MASK 0x3 #define SMPS_MODE_SHIFT 0x0 #define LDO_MODE_MASK 0x1 #define LDO_MODE_SHIFT 0x0 static const char palmas_smps_ctrl[][PALMAS_SMPS_NUM] = { {0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38, 0x3c}, {0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38}, {0x20, 0x24, 0x2c, 0x30, 0x38}, }; static const char palmas_smps_volt[][PALMAS_SMPS_NUM] = { {0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b, 0x3c}, {0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b}, {0x23, 0x27, 0x2f, 0x33, 0x3B} }; static const char palmas_ldo_ctrl[][PALMAS_LDO_NUM] = { {0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64}, {0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64}, {0x50, 0x52, 0x54, 0x5e, 0x62} }; static const char palmas_ldo_volt[][PALMAS_LDO_NUM] = { {0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65}, {0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65}, {0x51, 0x53, 0x55, 0x5f, 0x63} }; static int palmas_smps_enable(struct udevice *dev, int op, bool *enable) { int ret; unsigned int adr; struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); adr = uc_pdata->ctrl_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= PALMAS_SMPS_STATUS_MASK; if (ret) *enable = true; else *enable = false; return 0; } else if (op == PMIC_OP_SET) { if (*enable) ret |= PALMAS_SMPS_MODE_MASK; else ret &= ~(PALMAS_SMPS_MODE_MASK); ret = pmic_reg_write(dev->parent, adr, ret); if (ret) return ret; } return 0; } static int palmas_smps_volt2hex(int uV) { if (uV > PALMAS_LDO_VOLT_MAX) return -EINVAL; if (uV > 1650000) return (uV - 1000000) / 20000 + 0x6; if (uV == 500000) return 0x6; else return 0x6 + ((uV - 500000) / 10000); } static int palmas_smps_hex2volt(int hex, bool range) { unsigned int uV = 0; if (hex > PALMAS_SMPS_VOLT_MAX_HEX) return -EINVAL; if (hex < 0x7) uV = 500000; else uV = 500000 + (hex - 0x6) * 10000; if (range) uV *= 2; return uV; } static int palmas_smps_val(struct udevice *dev, int op, int *uV) { unsigned int adr; int hex, ret; bool range; struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); if (op == PMIC_OP_GET) *uV = 0; adr = uc_pdata->volt_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { if (ret & PALMAS_SMPS_RANGE_MASK) range = true; else range = false; ret &= PALMAS_SMPS_VOLT_MASK; ret = palmas_smps_hex2volt(ret, range); if (ret < 0) return ret; *uV = ret; return 0; } hex = palmas_smps_volt2hex(*uV); if (hex < 0) return hex; ret &= ~PALMAS_SMPS_VOLT_MASK; ret |= hex; if (*uV > 1650000) ret |= PALMAS_SMPS_RANGE_MASK; return pmic_reg_write(dev->parent, adr, ret); } static int palmas_ldo_bypass_enable(struct udevice *dev, bool enabled) { int type = dev_get_driver_data(dev_get_parent(dev)); struct dm_regulator_uclass_plat *p; unsigned int adr; int reg; if (type == TPS65917) { /* bypass available only on LDO1 and LDO2 */ if (dev->driver_data > 2) return -ENOTSUPP; } else if (type == TPS659038) { /* bypass available only on LDO9 */ if (dev->driver_data != 9) return -ENOTSUPP; } p = dev_get_uclass_plat(dev); adr = p->ctrl_reg; reg = pmic_reg_read(dev->parent, adr); if (reg < 0) return reg; if (enabled) reg |= PALMAS_LDO_BYPASS_EN; else reg &= ~PALMAS_LDO_BYPASS_EN; return pmic_reg_write(dev->parent, adr, reg); } static int palmas_ldo_enable(struct udevice *dev, int op, bool *enable) { int ret; unsigned int adr; struct dm_regulator_uclass_plat *uc_pdata; uc_pdata = dev_get_uclass_plat(dev); adr = uc_pdata->ctrl_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= PALMAS_LDO_STATUS_MASK; if (ret) *enable = true; else *enable = false; return 0; } else if (op == PMIC_OP_SET) { if (*enable) ret |= PALMAS_LDO_MODE_MASK; else ret &= ~(PALMAS_LDO_MODE_MASK); ret = pmic_reg_write(dev->parent, adr, ret); if (ret) return ret; ret = palmas_ldo_bypass_enable(dev, false); if (ret && (ret != -ENOTSUPP)) return ret; } return 0; } static int palmas_ldo_volt2hex(int uV) { if (uV > PALMAS_LDO_VOLT_MAX) return -EINVAL; return (uV - 850000) / 50000; } static int palmas_ldo_hex2volt(int hex) { if (hex > PALMAS_LDO_VOLT_MAX_HEX) return -EINVAL; if (!hex) return 0; return (hex * 50000) + 850000; } static int palmas_ldo_val(struct udevice *dev, int op, int *uV) { unsigned int adr; int hex, ret; struct dm_regulator_uclass_plat *uc_pdata; if (op == PMIC_OP_GET) *uV = 0; uc_pdata = dev_get_uclass_plat(dev); adr = uc_pdata->volt_reg; ret = pmic_reg_read(dev->parent, adr); if (ret < 0) return ret; if (op == PMIC_OP_GET) { ret &= PALMAS_LDO_VOLT_MASK; ret = palmas_ldo_hex2volt(ret); if (ret < 0) return ret; *uV = ret; return 0; } hex = palmas_ldo_volt2hex(*uV); if (hex < 0) return hex; ret &= ~PALMAS_LDO_VOLT_MASK; ret |= hex; if (*uV > 1650000) ret |= 0x80; return pmic_reg_write(dev->parent, adr, ret); } static int palmas_ldo_probe(struct udevice *dev) { struct dm_regulator_uclass_plat *uc_pdata; struct udevice *parent; uc_pdata = dev_get_uclass_plat(dev); parent = dev_get_parent(dev); int type = dev_get_driver_data(parent); uc_pdata->type = REGULATOR_TYPE_LDO; /* check for ldoln and ldousb cases */ if (!strcmp("ldoln", dev->name)) { uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][9]; uc_pdata->volt_reg = palmas_ldo_volt[type][9]; return 0; } if (!strcmp("ldousb", dev->name)) { uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][10]; uc_pdata->volt_reg = palmas_ldo_volt[type][10]; return 0; } if (dev->driver_data > 0) { u8 idx = dev->driver_data - 1; uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][idx]; uc_pdata->volt_reg = palmas_ldo_volt[type][idx]; } return 0; } static int ldo_get_value(struct udevice *dev) { int uV; int ret; ret = palmas_ldo_val(dev, PMIC_OP_GET, &uV); if (ret) return ret; return uV; } static int ldo_set_value(struct udevice *dev, int uV) { return palmas_ldo_val(dev, PMIC_OP_SET, &uV); } static int ldo_get_enable(struct udevice *dev) { bool enable = false; int ret; ret = palmas_ldo_enable(dev, PMIC_OP_GET, &enable); if (ret) return ret; return enable; } static int ldo_set_enable(struct udevice *dev, bool enable) { return palmas_ldo_enable(dev, PMIC_OP_SET, &enable); } static int palmas_smps_probe(struct udevice *dev) { struct dm_regulator_uclass_plat *uc_pdata; struct udevice *parent; int idx; uc_pdata = dev_get_uclass_plat(dev); parent = dev_get_parent(dev); int type = dev_get_driver_data(parent); uc_pdata->type = REGULATOR_TYPE_BUCK; switch (type) { case PALMAS: case TPS659038: switch (dev->driver_data) { case 123: case 12: uc_pdata->ctrl_reg = palmas_smps_ctrl[type][0]; uc_pdata->volt_reg = palmas_smps_volt[type][0]; break; case 3: uc_pdata->ctrl_reg = palmas_smps_ctrl[type][1]; uc_pdata->volt_reg = palmas_smps_volt[type][1]; break; case 45: uc_pdata->ctrl_reg = palmas_smps_ctrl[type][2]; uc_pdata->volt_reg = palmas_smps_volt[type][2]; break; case 6: case 7: case 8: case 9: case 10: idx = dev->driver_data - 3; uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx]; uc_pdata->volt_reg = palmas_smps_volt[type][idx]; break; default: printf("Wrong ID for regulator\n"); } break; case TPS65917: switch (dev->driver_data) { case 1: case 2: case 3: case 4: case 5: idx = dev->driver_data - 1; uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx]; uc_pdata->volt_reg = palmas_smps_volt[type][idx]; break; case 12: idx = 0; uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx]; uc_pdata->volt_reg = palmas_smps_volt[type][idx]; break; default: printf("Wrong ID for regulator\n"); } break; default: printf("Invalid PMIC ID\n"); } return 0; } static int smps_get_value(struct udevice *dev) { int uV; int ret; ret = palmas_smps_val(dev, PMIC_OP_GET, &uV); if (ret) return ret; return uV; } static int smps_set_value(struct udevice *dev, int uV) { return palmas_smps_val(dev, PMIC_OP_SET, &uV); } static int smps_get_enable(struct udevice *dev) { bool enable = false; int ret; ret = palmas_smps_enable(dev, PMIC_OP_GET, &enable); if (ret) return ret; return enable; } static int smps_set_enable(struct udevice *dev, bool enable) { return palmas_smps_enable(dev, PMIC_OP_SET, &enable); } static const struct dm_regulator_ops palmas_ldo_ops = { .get_value = ldo_get_value, .set_value = ldo_set_value, .get_enable = ldo_get_enable, .set_enable = ldo_set_enable, }; U_BOOT_DRIVER(palmas_ldo) = { .name = PALMAS_LDO_DRIVER, .id = UCLASS_REGULATOR, .ops = &palmas_ldo_ops, .probe = palmas_ldo_probe, }; static const struct dm_regulator_ops palmas_smps_ops = { .get_value = smps_get_value, .set_value = smps_set_value, .get_enable = smps_get_enable, .set_enable = smps_set_enable, }; U_BOOT_DRIVER(palmas_smps) = { .name = PALMAS_SMPS_DRIVER, .id = UCLASS_REGULATOR, .ops = &palmas_smps_ops, .probe = palmas_smps_probe, }; 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