1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Voltage regulator support for AMS AS3722 PMIC 4 * 5 * Copyright (C) 2013 ams 6 * 7 * Author: Florian Lobmaier <florian.lobmaier@ams.com> 8 * Author: Laxman Dewangan <ldewangan@nvidia.com> 9 */ 10 11 #include <linux/err.h> 12 #include <linux/kernel.h> 13 #include <linux/module.h> 14 #include <linux/mfd/as3722.h> 15 #include <linux/of.h> 16 #include <linux/of_platform.h> 17 #include <linux/platform_device.h> 18 #include <linux/regulator/driver.h> 19 #include <linux/regulator/machine.h> 20 #include <linux/regulator/of_regulator.h> 21 #include <linux/slab.h> 22 23 /* Regulator IDs */ 24 enum as3722_regulators_id { 25 AS3722_REGULATOR_ID_SD0, 26 AS3722_REGULATOR_ID_SD1, 27 AS3722_REGULATOR_ID_SD2, 28 AS3722_REGULATOR_ID_SD3, 29 AS3722_REGULATOR_ID_SD4, 30 AS3722_REGULATOR_ID_SD5, 31 AS3722_REGULATOR_ID_SD6, 32 AS3722_REGULATOR_ID_LDO0, 33 AS3722_REGULATOR_ID_LDO1, 34 AS3722_REGULATOR_ID_LDO2, 35 AS3722_REGULATOR_ID_LDO3, 36 AS3722_REGULATOR_ID_LDO4, 37 AS3722_REGULATOR_ID_LDO5, 38 AS3722_REGULATOR_ID_LDO6, 39 AS3722_REGULATOR_ID_LDO7, 40 AS3722_REGULATOR_ID_LDO9, 41 AS3722_REGULATOR_ID_LDO10, 42 AS3722_REGULATOR_ID_LDO11, 43 AS3722_REGULATOR_ID_MAX, 44 }; 45 46 struct as3722_register_mapping { 47 u8 regulator_id; 48 const char *name; 49 const char *sname; 50 u8 vsel_reg; 51 u8 vsel_mask; 52 int n_voltages; 53 u32 enable_reg; 54 u8 enable_mask; 55 u32 control_reg; 56 u8 mode_mask; 57 u32 sleep_ctrl_reg; 58 u8 sleep_ctrl_mask; 59 }; 60 61 struct as3722_regulator_config_data { 62 struct regulator_init_data *reg_init; 63 bool enable_tracking; 64 int ext_control; 65 }; 66 67 struct as3722_regulators { 68 struct device *dev; 69 struct as3722 *as3722; 70 struct regulator_desc desc[AS3722_REGULATOR_ID_MAX]; 71 struct as3722_regulator_config_data 72 reg_config_data[AS3722_REGULATOR_ID_MAX]; 73 }; 74 75 static const struct as3722_register_mapping as3722_reg_lookup[] = { 76 { 77 .regulator_id = AS3722_REGULATOR_ID_SD0, 78 .name = "as3722-sd0", 79 .vsel_reg = AS3722_SD0_VOLTAGE_REG, 80 .vsel_mask = AS3722_SD_VSEL_MASK, 81 .enable_reg = AS3722_SD_CONTROL_REG, 82 .enable_mask = AS3722_SDn_CTRL(0), 83 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, 84 .sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK, 85 .control_reg = AS3722_SD0_CONTROL_REG, 86 .mode_mask = AS3722_SD0_MODE_FAST, 87 }, 88 { 89 .regulator_id = AS3722_REGULATOR_ID_SD1, 90 .name = "as3722-sd1", 91 .vsel_reg = AS3722_SD1_VOLTAGE_REG, 92 .vsel_mask = AS3722_SD_VSEL_MASK, 93 .enable_reg = AS3722_SD_CONTROL_REG, 94 .enable_mask = AS3722_SDn_CTRL(1), 95 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, 96 .sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK, 97 .control_reg = AS3722_SD1_CONTROL_REG, 98 .mode_mask = AS3722_SD1_MODE_FAST, 99 }, 100 { 101 .regulator_id = AS3722_REGULATOR_ID_SD2, 102 .name = "as3722-sd2", 103 .sname = "vsup-sd2", 104 .vsel_reg = AS3722_SD2_VOLTAGE_REG, 105 .vsel_mask = AS3722_SD_VSEL_MASK, 106 .enable_reg = AS3722_SD_CONTROL_REG, 107 .enable_mask = AS3722_SDn_CTRL(2), 108 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, 109 .sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK, 110 .control_reg = AS3722_SD23_CONTROL_REG, 111 .mode_mask = AS3722_SD2_MODE_FAST, 112 .n_voltages = AS3722_SD2_VSEL_MAX + 1, 113 }, 114 { 115 .regulator_id = AS3722_REGULATOR_ID_SD3, 116 .name = "as3722-sd3", 117 .sname = "vsup-sd3", 118 .vsel_reg = AS3722_SD3_VOLTAGE_REG, 119 .vsel_mask = AS3722_SD_VSEL_MASK, 120 .enable_reg = AS3722_SD_CONTROL_REG, 121 .enable_mask = AS3722_SDn_CTRL(3), 122 .sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG, 123 .sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK, 124 .control_reg = AS3722_SD23_CONTROL_REG, 125 .mode_mask = AS3722_SD3_MODE_FAST, 126 .n_voltages = AS3722_SD2_VSEL_MAX + 1, 127 }, 128 { 129 .regulator_id = AS3722_REGULATOR_ID_SD4, 130 .name = "as3722-sd4", 131 .sname = "vsup-sd4", 132 .vsel_reg = AS3722_SD4_VOLTAGE_REG, 133 .vsel_mask = AS3722_SD_VSEL_MASK, 134 .enable_reg = AS3722_SD_CONTROL_REG, 135 .enable_mask = AS3722_SDn_CTRL(4), 136 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, 137 .sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK, 138 .control_reg = AS3722_SD4_CONTROL_REG, 139 .mode_mask = AS3722_SD4_MODE_FAST, 140 .n_voltages = AS3722_SD2_VSEL_MAX + 1, 141 }, 142 { 143 .regulator_id = AS3722_REGULATOR_ID_SD5, 144 .name = "as3722-sd5", 145 .sname = "vsup-sd5", 146 .vsel_reg = AS3722_SD5_VOLTAGE_REG, 147 .vsel_mask = AS3722_SD_VSEL_MASK, 148 .enable_reg = AS3722_SD_CONTROL_REG, 149 .enable_mask = AS3722_SDn_CTRL(5), 150 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, 151 .sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK, 152 .control_reg = AS3722_SD5_CONTROL_REG, 153 .mode_mask = AS3722_SD5_MODE_FAST, 154 .n_voltages = AS3722_SD2_VSEL_MAX + 1, 155 }, 156 { 157 .regulator_id = AS3722_REGULATOR_ID_SD6, 158 .name = "as3722-sd6", 159 .vsel_reg = AS3722_SD6_VOLTAGE_REG, 160 .vsel_mask = AS3722_SD_VSEL_MASK, 161 .enable_reg = AS3722_SD_CONTROL_REG, 162 .enable_mask = AS3722_SDn_CTRL(6), 163 .sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG, 164 .sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK, 165 .control_reg = AS3722_SD6_CONTROL_REG, 166 .mode_mask = AS3722_SD6_MODE_FAST, 167 }, 168 { 169 .regulator_id = AS3722_REGULATOR_ID_LDO0, 170 .name = "as3722-ldo0", 171 .sname = "vin-ldo0", 172 .vsel_reg = AS3722_LDO0_VOLTAGE_REG, 173 .vsel_mask = AS3722_LDO0_VSEL_MASK, 174 .enable_reg = AS3722_LDOCONTROL0_REG, 175 .enable_mask = AS3722_LDO0_CTRL, 176 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, 177 .sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK, 178 .n_voltages = AS3722_LDO0_NUM_VOLT, 179 }, 180 { 181 .regulator_id = AS3722_REGULATOR_ID_LDO1, 182 .name = "as3722-ldo1", 183 .sname = "vin-ldo1-6", 184 .vsel_reg = AS3722_LDO1_VOLTAGE_REG, 185 .vsel_mask = AS3722_LDO_VSEL_MASK, 186 .enable_reg = AS3722_LDOCONTROL0_REG, 187 .enable_mask = AS3722_LDO1_CTRL, 188 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, 189 .sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK, 190 .n_voltages = AS3722_LDO_NUM_VOLT, 191 }, 192 { 193 .regulator_id = AS3722_REGULATOR_ID_LDO2, 194 .name = "as3722-ldo2", 195 .sname = "vin-ldo2-5-7", 196 .vsel_reg = AS3722_LDO2_VOLTAGE_REG, 197 .vsel_mask = AS3722_LDO_VSEL_MASK, 198 .enable_reg = AS3722_LDOCONTROL0_REG, 199 .enable_mask = AS3722_LDO2_CTRL, 200 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, 201 .sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK, 202 .n_voltages = AS3722_LDO_NUM_VOLT, 203 }, 204 { 205 .regulator_id = AS3722_REGULATOR_ID_LDO3, 206 .name = "as3722-ldo3", 207 .sname = "vin-ldo3-4", 208 .vsel_reg = AS3722_LDO3_VOLTAGE_REG, 209 .vsel_mask = AS3722_LDO3_VSEL_MASK, 210 .enable_reg = AS3722_LDOCONTROL0_REG, 211 .enable_mask = AS3722_LDO3_CTRL, 212 .sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG, 213 .sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK, 214 .n_voltages = AS3722_LDO3_NUM_VOLT, 215 }, 216 { 217 .regulator_id = AS3722_REGULATOR_ID_LDO4, 218 .name = "as3722-ldo4", 219 .sname = "vin-ldo3-4", 220 .vsel_reg = AS3722_LDO4_VOLTAGE_REG, 221 .vsel_mask = AS3722_LDO_VSEL_MASK, 222 .enable_reg = AS3722_LDOCONTROL0_REG, 223 .enable_mask = AS3722_LDO4_CTRL, 224 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, 225 .sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK, 226 .n_voltages = AS3722_LDO_NUM_VOLT, 227 }, 228 { 229 .regulator_id = AS3722_REGULATOR_ID_LDO5, 230 .name = "as3722-ldo5", 231 .sname = "vin-ldo2-5-7", 232 .vsel_reg = AS3722_LDO5_VOLTAGE_REG, 233 .vsel_mask = AS3722_LDO_VSEL_MASK, 234 .enable_reg = AS3722_LDOCONTROL0_REG, 235 .enable_mask = AS3722_LDO5_CTRL, 236 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, 237 .sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK, 238 .n_voltages = AS3722_LDO_NUM_VOLT, 239 }, 240 { 241 .regulator_id = AS3722_REGULATOR_ID_LDO6, 242 .name = "as3722-ldo6", 243 .sname = "vin-ldo1-6", 244 .vsel_reg = AS3722_LDO6_VOLTAGE_REG, 245 .vsel_mask = AS3722_LDO_VSEL_MASK, 246 .enable_reg = AS3722_LDOCONTROL0_REG, 247 .enable_mask = AS3722_LDO6_CTRL, 248 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, 249 .sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK, 250 .n_voltages = AS3722_LDO_NUM_VOLT, 251 }, 252 { 253 .regulator_id = AS3722_REGULATOR_ID_LDO7, 254 .name = "as3722-ldo7", 255 .sname = "vin-ldo2-5-7", 256 .vsel_reg = AS3722_LDO7_VOLTAGE_REG, 257 .vsel_mask = AS3722_LDO_VSEL_MASK, 258 .enable_reg = AS3722_LDOCONTROL0_REG, 259 .enable_mask = AS3722_LDO7_CTRL, 260 .sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG, 261 .sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK, 262 .n_voltages = AS3722_LDO_NUM_VOLT, 263 }, 264 { 265 .regulator_id = AS3722_REGULATOR_ID_LDO9, 266 .name = "as3722-ldo9", 267 .sname = "vin-ldo9-10", 268 .vsel_reg = AS3722_LDO9_VOLTAGE_REG, 269 .vsel_mask = AS3722_LDO_VSEL_MASK, 270 .enable_reg = AS3722_LDOCONTROL1_REG, 271 .enable_mask = AS3722_LDO9_CTRL, 272 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, 273 .sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK, 274 .n_voltages = AS3722_LDO_NUM_VOLT, 275 }, 276 { 277 .regulator_id = AS3722_REGULATOR_ID_LDO10, 278 .name = "as3722-ldo10", 279 .sname = "vin-ldo9-10", 280 .vsel_reg = AS3722_LDO10_VOLTAGE_REG, 281 .vsel_mask = AS3722_LDO_VSEL_MASK, 282 .enable_reg = AS3722_LDOCONTROL1_REG, 283 .enable_mask = AS3722_LDO10_CTRL, 284 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, 285 .sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK, 286 .n_voltages = AS3722_LDO_NUM_VOLT, 287 }, 288 { 289 .regulator_id = AS3722_REGULATOR_ID_LDO11, 290 .name = "as3722-ldo11", 291 .sname = "vin-ldo11", 292 .vsel_reg = AS3722_LDO11_VOLTAGE_REG, 293 .vsel_mask = AS3722_LDO_VSEL_MASK, 294 .enable_reg = AS3722_LDOCONTROL1_REG, 295 .enable_mask = AS3722_LDO11_CTRL, 296 .sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG, 297 .sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK, 298 .n_voltages = AS3722_LDO_NUM_VOLT, 299 }, 300 }; 301 302 static const unsigned int as3722_ldo_current[] = { 150000, 300000 }; 303 static const unsigned int as3722_sd016_current[] = { 304 2500000, 3000000, 3500000 305 }; 306 307 static const struct regulator_ops as3722_ldo0_ops = { 308 .is_enabled = regulator_is_enabled_regmap, 309 .enable = regulator_enable_regmap, 310 .disable = regulator_disable_regmap, 311 .list_voltage = regulator_list_voltage_linear, 312 .get_voltage_sel = regulator_get_voltage_sel_regmap, 313 .set_voltage_sel = regulator_set_voltage_sel_regmap, 314 .get_current_limit = regulator_get_current_limit_regmap, 315 .set_current_limit = regulator_set_current_limit_regmap, 316 }; 317 318 static const struct regulator_ops as3722_ldo0_extcntrl_ops = { 319 .list_voltage = regulator_list_voltage_linear, 320 .get_voltage_sel = regulator_get_voltage_sel_regmap, 321 .set_voltage_sel = regulator_set_voltage_sel_regmap, 322 .get_current_limit = regulator_get_current_limit_regmap, 323 .set_current_limit = regulator_set_current_limit_regmap, 324 }; 325 326 static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg, 327 int id, u8 mode) 328 { 329 struct as3722 *as3722 = as3722_reg->as3722; 330 331 switch (mode) { 332 case AS3722_LDO3_MODE_PMOS: 333 case AS3722_LDO3_MODE_PMOS_TRACKING: 334 case AS3722_LDO3_MODE_NMOS: 335 case AS3722_LDO3_MODE_SWITCH: 336 return as3722_update_bits(as3722, 337 as3722_reg_lookup[id].vsel_reg, 338 AS3722_LDO3_MODE_MASK, mode); 339 340 default: 341 return -EINVAL; 342 } 343 } 344 345 static int as3722_ldo3_get_current_limit(struct regulator_dev *rdev) 346 { 347 return 150000; 348 } 349 350 static const struct regulator_ops as3722_ldo3_ops = { 351 .is_enabled = regulator_is_enabled_regmap, 352 .enable = regulator_enable_regmap, 353 .disable = regulator_disable_regmap, 354 .list_voltage = regulator_list_voltage_linear, 355 .get_voltage_sel = regulator_get_voltage_sel_regmap, 356 .set_voltage_sel = regulator_set_voltage_sel_regmap, 357 .get_current_limit = as3722_ldo3_get_current_limit, 358 }; 359 360 static const struct regulator_ops as3722_ldo3_extcntrl_ops = { 361 .list_voltage = regulator_list_voltage_linear, 362 .get_voltage_sel = regulator_get_voltage_sel_regmap, 363 .set_voltage_sel = regulator_set_voltage_sel_regmap, 364 .get_current_limit = as3722_ldo3_get_current_limit, 365 }; 366 367 static const struct regulator_ops as3722_ldo6_ops = { 368 .is_enabled = regulator_is_enabled_regmap, 369 .enable = regulator_enable_regmap, 370 .disable = regulator_disable_regmap, 371 .map_voltage = regulator_map_voltage_linear_range, 372 .set_voltage_sel = regulator_set_voltage_sel_regmap, 373 .get_voltage_sel = regulator_get_voltage_sel_regmap, 374 .list_voltage = regulator_list_voltage_linear_range, 375 .get_current_limit = regulator_get_current_limit_regmap, 376 .set_current_limit = regulator_set_current_limit_regmap, 377 .get_bypass = regulator_get_bypass_regmap, 378 .set_bypass = regulator_set_bypass_regmap, 379 }; 380 381 static const struct regulator_ops as3722_ldo6_extcntrl_ops = { 382 .map_voltage = regulator_map_voltage_linear_range, 383 .set_voltage_sel = regulator_set_voltage_sel_regmap, 384 .get_voltage_sel = regulator_get_voltage_sel_regmap, 385 .list_voltage = regulator_list_voltage_linear_range, 386 .get_current_limit = regulator_get_current_limit_regmap, 387 .set_current_limit = regulator_set_current_limit_regmap, 388 .get_bypass = regulator_get_bypass_regmap, 389 .set_bypass = regulator_set_bypass_regmap, 390 }; 391 392 static const struct linear_range as3722_ldo_ranges[] = { 393 REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0), 394 REGULATOR_LINEAR_RANGE(825000, 0x01, 0x24, 25000), 395 REGULATOR_LINEAR_RANGE(1725000, 0x40, 0x7F, 25000), 396 }; 397 398 static const struct regulator_ops as3722_ldo_ops = { 399 .is_enabled = regulator_is_enabled_regmap, 400 .enable = regulator_enable_regmap, 401 .disable = regulator_disable_regmap, 402 .map_voltage = regulator_map_voltage_linear_range, 403 .set_voltage_sel = regulator_set_voltage_sel_regmap, 404 .get_voltage_sel = regulator_get_voltage_sel_regmap, 405 .list_voltage = regulator_list_voltage_linear_range, 406 .get_current_limit = regulator_get_current_limit_regmap, 407 .set_current_limit = regulator_set_current_limit_regmap, 408 }; 409 410 static const struct regulator_ops as3722_ldo_extcntrl_ops = { 411 .map_voltage = regulator_map_voltage_linear_range, 412 .set_voltage_sel = regulator_set_voltage_sel_regmap, 413 .get_voltage_sel = regulator_get_voltage_sel_regmap, 414 .list_voltage = regulator_list_voltage_linear_range, 415 .get_current_limit = regulator_get_current_limit_regmap, 416 .set_current_limit = regulator_set_current_limit_regmap, 417 }; 418 419 static unsigned int as3722_sd_get_mode(struct regulator_dev *rdev) 420 { 421 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); 422 struct as3722 *as3722 = as3722_regs->as3722; 423 int id = rdev_get_id(rdev); 424 u32 val; 425 int ret; 426 427 if (!as3722_reg_lookup[id].control_reg) 428 return -ENOTSUPP; 429 430 ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val); 431 if (ret < 0) { 432 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n", 433 as3722_reg_lookup[id].control_reg, ret); 434 return ret; 435 } 436 437 if (val & as3722_reg_lookup[id].mode_mask) 438 return REGULATOR_MODE_FAST; 439 else 440 return REGULATOR_MODE_NORMAL; 441 } 442 443 static int as3722_sd_set_mode(struct regulator_dev *rdev, 444 unsigned int mode) 445 { 446 struct as3722_regulators *as3722_regs = rdev_get_drvdata(rdev); 447 struct as3722 *as3722 = as3722_regs->as3722; 448 u8 id = rdev_get_id(rdev); 449 u8 val = 0; 450 int ret; 451 452 if (!as3722_reg_lookup[id].control_reg) 453 return -ERANGE; 454 455 switch (mode) { 456 case REGULATOR_MODE_FAST: 457 val = as3722_reg_lookup[id].mode_mask; 458 fallthrough; 459 case REGULATOR_MODE_NORMAL: 460 break; 461 default: 462 return -EINVAL; 463 } 464 465 ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg, 466 as3722_reg_lookup[id].mode_mask, val); 467 if (ret < 0) { 468 dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n", 469 as3722_reg_lookup[id].control_reg, ret); 470 return ret; 471 } 472 return ret; 473 } 474 475 static bool as3722_sd0_is_low_voltage(struct as3722_regulators *as3722_regs) 476 { 477 int err; 478 unsigned val; 479 480 err = as3722_read(as3722_regs->as3722, AS3722_FUSE7_REG, &val); 481 if (err < 0) { 482 dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n", 483 AS3722_FUSE7_REG, err); 484 return false; 485 } 486 if (val & AS3722_FUSE7_SD0_LOW_VOLTAGE) 487 return true; 488 return false; 489 } 490 491 static const struct linear_range as3722_sd2345_ranges[] = { 492 REGULATOR_LINEAR_RANGE(0, 0x00, 0x00, 0), 493 REGULATOR_LINEAR_RANGE(612500, 0x01, 0x40, 12500), 494 REGULATOR_LINEAR_RANGE(1425000, 0x41, 0x70, 25000), 495 REGULATOR_LINEAR_RANGE(2650000, 0x71, 0x7F, 50000), 496 }; 497 498 static const struct regulator_ops as3722_sd016_ops = { 499 .is_enabled = regulator_is_enabled_regmap, 500 .enable = regulator_enable_regmap, 501 .disable = regulator_disable_regmap, 502 .list_voltage = regulator_list_voltage_linear, 503 .map_voltage = regulator_map_voltage_linear, 504 .get_voltage_sel = regulator_get_voltage_sel_regmap, 505 .set_voltage_sel = regulator_set_voltage_sel_regmap, 506 .get_current_limit = regulator_get_current_limit_regmap, 507 .set_current_limit = regulator_set_current_limit_regmap, 508 .get_mode = as3722_sd_get_mode, 509 .set_mode = as3722_sd_set_mode, 510 }; 511 512 static const struct regulator_ops as3722_sd016_extcntrl_ops = { 513 .list_voltage = regulator_list_voltage_linear, 514 .map_voltage = regulator_map_voltage_linear, 515 .get_voltage_sel = regulator_get_voltage_sel_regmap, 516 .set_voltage_sel = regulator_set_voltage_sel_regmap, 517 .get_current_limit = regulator_get_current_limit_regmap, 518 .set_current_limit = regulator_set_current_limit_regmap, 519 .get_mode = as3722_sd_get_mode, 520 .set_mode = as3722_sd_set_mode, 521 }; 522 523 static const struct regulator_ops as3722_sd2345_ops = { 524 .is_enabled = regulator_is_enabled_regmap, 525 .enable = regulator_enable_regmap, 526 .disable = regulator_disable_regmap, 527 .list_voltage = regulator_list_voltage_linear_range, 528 .map_voltage = regulator_map_voltage_linear_range, 529 .set_voltage_sel = regulator_set_voltage_sel_regmap, 530 .get_voltage_sel = regulator_get_voltage_sel_regmap, 531 .get_mode = as3722_sd_get_mode, 532 .set_mode = as3722_sd_set_mode, 533 }; 534 535 static const struct regulator_ops as3722_sd2345_extcntrl_ops = { 536 .list_voltage = regulator_list_voltage_linear_range, 537 .map_voltage = regulator_map_voltage_linear_range, 538 .set_voltage_sel = regulator_set_voltage_sel_regmap, 539 .get_voltage_sel = regulator_get_voltage_sel_regmap, 540 .get_mode = as3722_sd_get_mode, 541 .set_mode = as3722_sd_set_mode, 542 }; 543 544 static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id, 545 int ext_pwr_ctrl) 546 { 547 int ret; 548 unsigned int val; 549 550 if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) || 551 (ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3)) 552 return -EINVAL; 553 554 val = ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1); 555 ret = as3722_update_bits(as3722_regs->as3722, 556 as3722_reg_lookup[id].sleep_ctrl_reg, 557 as3722_reg_lookup[id].sleep_ctrl_mask, val); 558 if (ret < 0) 559 dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n", 560 as3722_reg_lookup[id].sleep_ctrl_reg, ret); 561 return ret; 562 } 563 564 static struct of_regulator_match as3722_regulator_matches[] = { 565 { .name = "sd0", }, 566 { .name = "sd1", }, 567 { .name = "sd2", }, 568 { .name = "sd3", }, 569 { .name = "sd4", }, 570 { .name = "sd5", }, 571 { .name = "sd6", }, 572 { .name = "ldo0", }, 573 { .name = "ldo1", }, 574 { .name = "ldo2", }, 575 { .name = "ldo3", }, 576 { .name = "ldo4", }, 577 { .name = "ldo5", }, 578 { .name = "ldo6", }, 579 { .name = "ldo7", }, 580 { .name = "ldo9", }, 581 { .name = "ldo10", }, 582 { .name = "ldo11", }, 583 }; 584 585 static int as3722_get_regulator_dt_data(struct platform_device *pdev, 586 struct as3722_regulators *as3722_regs) 587 { 588 struct device_node *np; 589 struct as3722_regulator_config_data *reg_config; 590 u32 prop; 591 int id; 592 int ret; 593 594 np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); 595 if (!np) { 596 dev_err(&pdev->dev, "Device is not having regulators node\n"); 597 return -ENODEV; 598 } 599 pdev->dev.of_node = np; 600 601 ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches, 602 ARRAY_SIZE(as3722_regulator_matches)); 603 of_node_put(np); 604 if (ret < 0) { 605 dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n", 606 ret); 607 return ret; 608 } 609 610 for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) { 611 struct device_node *reg_node; 612 613 reg_config = &as3722_regs->reg_config_data[id]; 614 reg_config->reg_init = as3722_regulator_matches[id].init_data; 615 reg_node = as3722_regulator_matches[id].of_node; 616 617 if (!reg_config->reg_init || !reg_node) 618 continue; 619 620 ret = of_property_read_u32(reg_node, "ams,ext-control", &prop); 621 if (!ret) { 622 if (prop < 3) 623 reg_config->ext_control = prop; 624 else 625 dev_warn(&pdev->dev, 626 "ext-control have invalid option: %u\n", 627 prop); 628 } 629 reg_config->enable_tracking = 630 of_property_read_bool(reg_node, "ams,enable-tracking"); 631 } 632 return 0; 633 } 634 635 static int as3722_regulator_probe(struct platform_device *pdev) 636 { 637 struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent); 638 struct as3722_regulators *as3722_regs; 639 struct as3722_regulator_config_data *reg_config; 640 struct regulator_dev *rdev; 641 struct regulator_config config = { }; 642 const struct regulator_ops *ops; 643 int id; 644 int ret; 645 646 as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs), 647 GFP_KERNEL); 648 if (!as3722_regs) 649 return -ENOMEM; 650 651 as3722_regs->dev = &pdev->dev; 652 as3722_regs->as3722 = as3722; 653 platform_set_drvdata(pdev, as3722_regs); 654 655 ret = as3722_get_regulator_dt_data(pdev, as3722_regs); 656 if (ret < 0) 657 return ret; 658 659 config.dev = &pdev->dev; 660 config.driver_data = as3722_regs; 661 config.regmap = as3722->regmap; 662 663 for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) { 664 struct regulator_desc *desc; 665 666 desc = &as3722_regs->desc[id]; 667 reg_config = &as3722_regs->reg_config_data[id]; 668 669 desc->name = as3722_reg_lookup[id].name; 670 desc->supply_name = as3722_reg_lookup[id].sname; 671 desc->id = as3722_reg_lookup[id].regulator_id; 672 desc->n_voltages = as3722_reg_lookup[id].n_voltages; 673 desc->type = REGULATOR_VOLTAGE; 674 desc->owner = THIS_MODULE; 675 desc->enable_reg = as3722_reg_lookup[id].enable_reg; 676 desc->enable_mask = as3722_reg_lookup[id].enable_mask; 677 desc->vsel_reg = as3722_reg_lookup[id].vsel_reg; 678 desc->vsel_mask = as3722_reg_lookup[id].vsel_mask; 679 switch (id) { 680 case AS3722_REGULATOR_ID_LDO0: 681 if (reg_config->ext_control) 682 ops = &as3722_ldo0_extcntrl_ops; 683 else 684 ops = &as3722_ldo0_ops; 685 desc->min_uV = 825000; 686 desc->uV_step = 25000; 687 desc->linear_min_sel = 1; 688 desc->enable_time = 500; 689 desc->curr_table = as3722_ldo_current; 690 desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current); 691 desc->csel_reg = as3722_reg_lookup[id].vsel_reg; 692 desc->csel_mask = AS3722_LDO_ILIMIT_MASK; 693 break; 694 case AS3722_REGULATOR_ID_LDO3: 695 if (reg_config->ext_control) 696 ops = &as3722_ldo3_extcntrl_ops; 697 else 698 ops = &as3722_ldo3_ops; 699 desc->min_uV = 620000; 700 desc->uV_step = 20000; 701 desc->linear_min_sel = 1; 702 desc->enable_time = 500; 703 if (reg_config->enable_tracking) { 704 ret = as3722_ldo3_set_tracking_mode(as3722_regs, 705 id, AS3722_LDO3_MODE_PMOS_TRACKING); 706 if (ret < 0) { 707 dev_err(&pdev->dev, 708 "LDO3 tracking failed: %d\n", 709 ret); 710 return ret; 711 } 712 } 713 break; 714 case AS3722_REGULATOR_ID_LDO6: 715 if (reg_config->ext_control) 716 ops = &as3722_ldo6_extcntrl_ops; 717 else 718 ops = &as3722_ldo6_ops; 719 desc->enable_time = 500; 720 desc->bypass_reg = AS3722_LDO6_VOLTAGE_REG; 721 desc->bypass_mask = AS3722_LDO_VSEL_MASK; 722 desc->bypass_val_on = AS3722_LDO6_VSEL_BYPASS; 723 desc->bypass_val_off = AS3722_LDO6_VSEL_BYPASS; 724 desc->linear_ranges = as3722_ldo_ranges; 725 desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges); 726 desc->curr_table = as3722_ldo_current; 727 desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current); 728 desc->csel_reg = as3722_reg_lookup[id].vsel_reg; 729 desc->csel_mask = AS3722_LDO_ILIMIT_MASK; 730 break; 731 case AS3722_REGULATOR_ID_SD0: 732 case AS3722_REGULATOR_ID_SD1: 733 case AS3722_REGULATOR_ID_SD6: 734 if (reg_config->ext_control) 735 ops = &as3722_sd016_extcntrl_ops; 736 else 737 ops = &as3722_sd016_ops; 738 if (id == AS3722_REGULATOR_ID_SD0 && 739 as3722_sd0_is_low_voltage(as3722_regs)) { 740 as3722_regs->desc[id].n_voltages = 741 AS3722_SD0_VSEL_LOW_VOL_MAX + 1; 742 as3722_regs->desc[id].min_uV = 410000; 743 } else { 744 as3722_regs->desc[id].n_voltages = 745 AS3722_SD0_VSEL_MAX + 1; 746 as3722_regs->desc[id].min_uV = 610000; 747 } 748 desc->uV_step = 10000; 749 desc->linear_min_sel = 1; 750 desc->enable_time = 600; 751 desc->curr_table = as3722_sd016_current; 752 desc->n_current_limits = 753 ARRAY_SIZE(as3722_sd016_current); 754 if (id == AS3722_REGULATOR_ID_SD0) { 755 desc->csel_reg = AS3722_OVCURRENT_REG; 756 desc->csel_mask = 757 AS3722_OVCURRENT_SD0_TRIP_MASK; 758 } else if (id == AS3722_REGULATOR_ID_SD1) { 759 desc->csel_reg = AS3722_OVCURRENT_REG; 760 desc->csel_mask = 761 AS3722_OVCURRENT_SD1_TRIP_MASK; 762 } else if (id == AS3722_REGULATOR_ID_SD6) { 763 desc->csel_reg = AS3722_OVCURRENT_DEB_REG; 764 desc->csel_mask = 765 AS3722_OVCURRENT_SD6_TRIP_MASK; 766 } 767 break; 768 case AS3722_REGULATOR_ID_SD2: 769 case AS3722_REGULATOR_ID_SD3: 770 case AS3722_REGULATOR_ID_SD4: 771 case AS3722_REGULATOR_ID_SD5: 772 if (reg_config->ext_control) 773 ops = &as3722_sd2345_extcntrl_ops; 774 else 775 ops = &as3722_sd2345_ops; 776 desc->linear_ranges = as3722_sd2345_ranges; 777 desc->n_linear_ranges = 778 ARRAY_SIZE(as3722_sd2345_ranges); 779 break; 780 default: 781 if (reg_config->ext_control) 782 ops = &as3722_ldo_extcntrl_ops; 783 else 784 ops = &as3722_ldo_ops; 785 desc->enable_time = 500; 786 desc->linear_ranges = as3722_ldo_ranges; 787 desc->n_linear_ranges = ARRAY_SIZE(as3722_ldo_ranges); 788 desc->curr_table = as3722_ldo_current; 789 desc->n_current_limits = ARRAY_SIZE(as3722_ldo_current); 790 desc->csel_reg = as3722_reg_lookup[id].vsel_reg; 791 desc->csel_mask = AS3722_LDO_ILIMIT_MASK; 792 break; 793 } 794 desc->ops = ops; 795 config.init_data = reg_config->reg_init; 796 config.of_node = as3722_regulator_matches[id].of_node; 797 rdev = devm_regulator_register(&pdev->dev, desc, &config); 798 if (IS_ERR(rdev)) { 799 ret = PTR_ERR(rdev); 800 dev_err(&pdev->dev, "regulator %d register failed %d\n", 801 id, ret); 802 return ret; 803 } 804 805 if (reg_config->ext_control) { 806 ret = regulator_enable_regmap(rdev); 807 if (ret < 0) { 808 dev_err(&pdev->dev, 809 "Regulator %d enable failed: %d\n", 810 id, ret); 811 return ret; 812 } 813 ret = as3722_extreg_init(as3722_regs, id, 814 reg_config->ext_control); 815 if (ret < 0) { 816 dev_err(&pdev->dev, 817 "AS3722 ext control failed: %d", ret); 818 return ret; 819 } 820 } 821 } 822 return 0; 823 } 824 825 static const struct of_device_id of_as3722_regulator_match[] = { 826 { .compatible = "ams,as3722-regulator", }, 827 {}, 828 }; 829 MODULE_DEVICE_TABLE(of, of_as3722_regulator_match); 830 831 static struct platform_driver as3722_regulator_driver = { 832 .driver = { 833 .name = "as3722-regulator", 834 .probe_type = PROBE_PREFER_ASYNCHRONOUS, 835 .of_match_table = of_as3722_regulator_match, 836 }, 837 .probe = as3722_regulator_probe, 838 }; 839 840 module_platform_driver(as3722_regulator_driver); 841 842 MODULE_ALIAS("platform:as3722-regulator"); 843 MODULE_DESCRIPTION("AS3722 regulator driver"); 844 MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>"); 845 MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>"); 846 MODULE_LICENSE("GPL"); 847