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