1 /* 2 * Regulators driver for Marvell 88PM8607 3 * 4 * Copyright (C) 2009 Marvell International Ltd. 5 * Haojian Zhuang <haojian.zhuang@marvell.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #include <linux/kernel.h> 12 #include <linux/init.h> 13 #include <linux/err.h> 14 #include <linux/i2c.h> 15 #include <linux/of.h> 16 #include <linux/regulator/of_regulator.h> 17 #include <linux/platform_device.h> 18 #include <linux/regulator/driver.h> 19 #include <linux/regulator/machine.h> 20 #include <linux/mfd/88pm860x.h> 21 #include <linux/module.h> 22 23 struct pm8607_regulator_info { 24 struct regulator_desc desc; 25 struct pm860x_chip *chip; 26 struct regulator_dev *regulator; 27 struct i2c_client *i2c; 28 struct i2c_client *i2c_8606; 29 30 unsigned int *vol_table; 31 unsigned int *vol_suspend; 32 33 int update_reg; 34 int update_bit; 35 int slope_double; 36 }; 37 38 static const unsigned int BUCK1_table[] = { 39 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000, 40 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000, 41 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000, 42 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000, 43 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 44 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 45 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 46 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 47 }; 48 49 static const unsigned int BUCK1_suspend_table[] = { 50 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 51 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 52 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 53 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 54 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 55 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 56 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 57 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 58 }; 59 60 static const unsigned int BUCK2_table[] = { 61 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, 62 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, 63 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, 64 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, 65 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, 66 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, 67 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, 68 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, 69 }; 70 71 static const unsigned int BUCK2_suspend_table[] = { 72 0, 50000, 100000, 150000, 200000, 250000, 300000, 350000, 73 400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000, 74 800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000, 75 1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000, 76 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000, 77 2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000, 78 2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000, 79 2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000, 80 }; 81 82 static const unsigned int BUCK3_table[] = { 83 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 84 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 85 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 86 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 87 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 88 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 89 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 90 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 91 }; 92 93 static const unsigned int BUCK3_suspend_table[] = { 94 0, 25000, 50000, 75000, 100000, 125000, 150000, 175000, 95 200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000, 96 400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000, 97 600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000, 98 800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000, 99 1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 100 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 101 1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000, 102 }; 103 104 static const unsigned int LDO1_table[] = { 105 1800000, 1200000, 2800000, 0, 106 }; 107 108 static const unsigned int LDO1_suspend_table[] = { 109 1800000, 1200000, 0, 0, 110 }; 111 112 static const unsigned int LDO2_table[] = { 113 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 114 }; 115 116 static const unsigned int LDO2_suspend_table[] = { 117 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 118 }; 119 120 static const unsigned int LDO3_table[] = { 121 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 122 }; 123 124 static const unsigned int LDO3_suspend_table[] = { 125 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 126 }; 127 128 static const unsigned int LDO4_table[] = { 129 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000, 130 }; 131 132 static const unsigned int LDO4_suspend_table[] = { 133 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000, 134 }; 135 136 static const unsigned int LDO5_table[] = { 137 2900000, 3000000, 3100000, 3300000, 138 }; 139 140 static const unsigned int LDO5_suspend_table[] = { 141 2900000, 0, 0, 0, 142 }; 143 144 static const unsigned int LDO6_table[] = { 145 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000, 146 }; 147 148 static const unsigned int LDO6_suspend_table[] = { 149 1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000, 150 }; 151 152 static const unsigned int LDO7_table[] = { 153 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 154 }; 155 156 static const unsigned int LDO7_suspend_table[] = { 157 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 158 }; 159 160 static const unsigned int LDO8_table[] = { 161 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 162 }; 163 164 static const unsigned int LDO8_suspend_table[] = { 165 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 166 }; 167 168 static const unsigned int LDO9_table[] = { 169 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 170 }; 171 172 static const unsigned int LDO9_suspend_table[] = { 173 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 174 }; 175 176 static const unsigned int LDO10_table[] = { 177 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000, 178 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 179 }; 180 181 static const unsigned int LDO10_suspend_table[] = { 182 1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000, 183 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 184 }; 185 186 static const unsigned int LDO12_table[] = { 187 1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000, 188 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 189 }; 190 191 static const unsigned int LDO12_suspend_table[] = { 192 1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000, 193 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 194 }; 195 196 static const unsigned int LDO13_table[] = { 197 1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0, 198 }; 199 200 static const unsigned int LDO13_suspend_table[] = { 201 0, 202 }; 203 204 static const unsigned int LDO14_table[] = { 205 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000, 206 }; 207 208 static const unsigned int LDO14_suspend_table[] = { 209 1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000, 210 }; 211 212 static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index) 213 { 214 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 215 int ret = -EINVAL; 216 217 if (info->vol_table && (index < rdev->desc->n_voltages)) { 218 ret = info->vol_table[index]; 219 if (info->slope_double) 220 ret <<= 1; 221 } 222 return ret; 223 } 224 225 static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) 226 { 227 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 228 uint8_t val; 229 int ret; 230 231 val = (uint8_t)(selector << (ffs(rdev->desc->vsel_mask) - 1)); 232 233 ret = pm860x_set_bits(info->i2c, rdev->desc->vsel_reg, 234 rdev->desc->vsel_mask, val); 235 if (ret) 236 return ret; 237 switch (info->desc.id) { 238 case PM8607_ID_BUCK1: 239 case PM8607_ID_BUCK3: 240 ret = pm860x_set_bits(info->i2c, info->update_reg, 241 1 << info->update_bit, 242 1 << info->update_bit); 243 break; 244 } 245 return ret; 246 } 247 248 static int pm8606_preg_enable(struct regulator_dev *rdev) 249 { 250 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 251 252 return pm860x_set_bits(info->i2c, rdev->desc->enable_reg, 253 1 << rdev->desc->enable_mask, 0); 254 } 255 256 static int pm8606_preg_disable(struct regulator_dev *rdev) 257 { 258 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 259 260 return pm860x_set_bits(info->i2c, rdev->desc->enable_reg, 261 1 << rdev->desc->enable_mask, 262 1 << rdev->desc->enable_mask); 263 } 264 265 static int pm8606_preg_is_enabled(struct regulator_dev *rdev) 266 { 267 struct pm8607_regulator_info *info = rdev_get_drvdata(rdev); 268 int ret; 269 270 ret = pm860x_reg_read(info->i2c, rdev->desc->enable_reg); 271 if (ret < 0) 272 return ret; 273 274 return !((unsigned char)ret & (1 << rdev->desc->enable_mask)); 275 } 276 277 static struct regulator_ops pm8607_regulator_ops = { 278 .list_voltage = pm8607_list_voltage, 279 .set_voltage_sel = pm8607_set_voltage_sel, 280 .get_voltage_sel = regulator_get_voltage_sel_regmap, 281 .enable = regulator_enable_regmap, 282 .disable = regulator_disable_regmap, 283 .is_enabled = regulator_is_enabled_regmap, 284 }; 285 286 static struct regulator_ops pm8606_preg_ops = { 287 .enable = pm8606_preg_enable, 288 .disable = pm8606_preg_disable, 289 .is_enabled = pm8606_preg_is_enabled, 290 }; 291 292 #define PM8606_PREG(ereg, ebit) \ 293 { \ 294 .desc = { \ 295 .name = "PREG", \ 296 .ops = &pm8606_preg_ops, \ 297 .type = REGULATOR_CURRENT, \ 298 .id = PM8606_ID_PREG, \ 299 .owner = THIS_MODULE, \ 300 .enable_reg = PM8606_##ereg, \ 301 .enable_mask = (ebit), \ 302 }, \ 303 } 304 305 #define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \ 306 { \ 307 .desc = { \ 308 .name = #vreg, \ 309 .ops = &pm8607_regulator_ops, \ 310 .type = REGULATOR_VOLTAGE, \ 311 .id = PM8607_ID_##vreg, \ 312 .owner = THIS_MODULE, \ 313 .n_voltages = ARRAY_SIZE(vreg##_table), \ 314 .vsel_reg = PM8607_##vreg, \ 315 .vsel_mask = ARRAY_SIZE(vreg##_table) - 1, \ 316 .enable_reg = PM8607_##ereg, \ 317 .enable_mask = 1 << (ebit), \ 318 }, \ 319 .update_reg = PM8607_##ureg, \ 320 .update_bit = (ubit), \ 321 .slope_double = (0), \ 322 .vol_table = (unsigned int *)&vreg##_table, \ 323 .vol_suspend = (unsigned int *)&vreg##_suspend_table, \ 324 } 325 326 #define PM8607_LDO(_id, vreg, shift, ereg, ebit) \ 327 { \ 328 .desc = { \ 329 .name = "LDO" #_id, \ 330 .ops = &pm8607_regulator_ops, \ 331 .type = REGULATOR_VOLTAGE, \ 332 .id = PM8607_ID_LDO##_id, \ 333 .owner = THIS_MODULE, \ 334 .n_voltages = ARRAY_SIZE(LDO##_id##_table), \ 335 .vsel_reg = PM8607_##vreg, \ 336 .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \ 337 .enable_reg = PM8607_##ereg, \ 338 .enable_mask = 1 << (ebit), \ 339 }, \ 340 .slope_double = (0), \ 341 .vol_table = (unsigned int *)&LDO##_id##_table, \ 342 .vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \ 343 } 344 345 static struct pm8607_regulator_info pm8607_regulator_info[] = { 346 PM8607_DVC(BUCK1, GO, 0, SUPPLIES_EN11, 0), 347 PM8607_DVC(BUCK2, GO, 1, SUPPLIES_EN11, 1), 348 PM8607_DVC(BUCK3, GO, 2, SUPPLIES_EN11, 2), 349 350 PM8607_LDO(1, LDO1, 0, SUPPLIES_EN11, 3), 351 PM8607_LDO(2, LDO2, 0, SUPPLIES_EN11, 4), 352 PM8607_LDO(3, LDO3, 0, SUPPLIES_EN11, 5), 353 PM8607_LDO(4, LDO4, 0, SUPPLIES_EN11, 6), 354 PM8607_LDO(5, LDO5, 0, SUPPLIES_EN11, 7), 355 PM8607_LDO(6, LDO6, 0, SUPPLIES_EN12, 0), 356 PM8607_LDO(7, LDO7, 0, SUPPLIES_EN12, 1), 357 PM8607_LDO(8, LDO8, 0, SUPPLIES_EN12, 2), 358 PM8607_LDO(9, LDO9, 0, SUPPLIES_EN12, 3), 359 PM8607_LDO(10, LDO10, 0, SUPPLIES_EN12, 4), 360 PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5), 361 PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0), 362 PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6), 363 }; 364 365 static struct pm8607_regulator_info pm8606_regulator_info[] = { 366 PM8606_PREG(PREREGULATORB, 5), 367 }; 368 369 #ifdef CONFIG_OF 370 static int pm8607_regulator_dt_init(struct platform_device *pdev, 371 struct pm8607_regulator_info *info, 372 struct regulator_config *config) 373 { 374 struct device_node *nproot, *np; 375 nproot = pdev->dev.parent->of_node; 376 if (!nproot) 377 return -ENODEV; 378 nproot = of_find_node_by_name(nproot, "regulators"); 379 if (!nproot) { 380 dev_err(&pdev->dev, "failed to find regulators node\n"); 381 return -ENODEV; 382 } 383 for_each_child_of_node(nproot, np) { 384 if (!of_node_cmp(np->name, info->desc.name)) { 385 config->init_data = 386 of_get_regulator_init_data(&pdev->dev, np); 387 config->of_node = np; 388 break; 389 } 390 } 391 return 0; 392 } 393 #else 394 #define pm8607_regulator_dt_init(x, y, z) (-1) 395 #endif 396 397 static int pm8607_regulator_probe(struct platform_device *pdev) 398 { 399 struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent); 400 struct pm8607_regulator_info *info = NULL; 401 struct regulator_init_data *pdata = pdev->dev.platform_data; 402 struct regulator_config config = { }; 403 struct resource *res; 404 int i; 405 406 res = platform_get_resource(pdev, IORESOURCE_REG, 0); 407 if (res) { 408 /* There're resources in 88PM8607 regulator driver */ 409 for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) { 410 info = &pm8607_regulator_info[i]; 411 if (info->desc.vsel_reg == res->start) 412 break; 413 } 414 if (i == ARRAY_SIZE(pm8607_regulator_info)) { 415 dev_err(&pdev->dev, "Failed to find regulator %llu\n", 416 (unsigned long long)res->start); 417 return -EINVAL; 418 } 419 } else { 420 /* There's no resource in 88PM8606 PREG regulator driver */ 421 info = &pm8606_regulator_info[0]; 422 /* i is used to check regulator ID */ 423 i = -1; 424 } 425 info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; 426 info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion : 427 chip->client; 428 info->chip = chip; 429 430 /* check DVC ramp slope double */ 431 if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double) 432 info->slope_double = 1; 433 434 config.dev = &pdev->dev; 435 config.driver_data = info; 436 437 if (pm8607_regulator_dt_init(pdev, info, &config)) 438 if (pdata) 439 config.init_data = pdata; 440 441 if (chip->id == CHIP_PM8607) 442 config.regmap = chip->regmap; 443 else 444 config.regmap = chip->regmap_companion; 445 446 info->regulator = regulator_register(&info->desc, &config); 447 if (IS_ERR(info->regulator)) { 448 dev_err(&pdev->dev, "failed to register regulator %s\n", 449 info->desc.name); 450 return PTR_ERR(info->regulator); 451 } 452 453 platform_set_drvdata(pdev, info); 454 return 0; 455 } 456 457 static int pm8607_regulator_remove(struct platform_device *pdev) 458 { 459 struct pm8607_regulator_info *info = platform_get_drvdata(pdev); 460 461 platform_set_drvdata(pdev, NULL); 462 regulator_unregister(info->regulator); 463 return 0; 464 } 465 466 static struct platform_device_id pm8607_regulator_driver_ids[] = { 467 { 468 .name = "88pm860x-regulator", 469 .driver_data = 0, 470 }, { 471 .name = "88pm860x-preg", 472 .driver_data = 0, 473 }, 474 { }, 475 }; 476 MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids); 477 478 static struct platform_driver pm8607_regulator_driver = { 479 .driver = { 480 .name = "88pm860x-regulator", 481 .owner = THIS_MODULE, 482 }, 483 .probe = pm8607_regulator_probe, 484 .remove = pm8607_regulator_remove, 485 .id_table = pm8607_regulator_driver_ids, 486 }; 487 488 static int __init pm8607_regulator_init(void) 489 { 490 return platform_driver_register(&pm8607_regulator_driver); 491 } 492 subsys_initcall(pm8607_regulator_init); 493 494 static void __exit pm8607_regulator_exit(void) 495 { 496 platform_driver_unregister(&pm8607_regulator_driver); 497 } 498 module_exit(pm8607_regulator_exit); 499 500 MODULE_LICENSE("GPL"); 501 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>"); 502 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC"); 503 MODULE_ALIAS("platform:88pm8607-regulator"); 504