drivers/regulator/88pm8607.c

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