linux/drivers/regulator/88pm8607.c
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   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
  23struct 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
  36static 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
  47static 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
  58static 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
  69static 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
  80static 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
  91static 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
 102static const unsigned int LDO1_table[] = {
 103        1800000, 1200000, 2800000, 0,
 104};
 105
 106static const unsigned int LDO1_suspend_table[] = {
 107        1800000, 1200000, 0, 0,
 108};
 109
 110static const unsigned int LDO2_table[] = {
 111        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 112};
 113
 114static const unsigned int LDO2_suspend_table[] = {
 115        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 116};
 117
 118static const unsigned int LDO3_table[] = {
 119        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 120};
 121
 122static const unsigned int LDO3_suspend_table[] = {
 123        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 124};
 125
 126static const unsigned int LDO4_table[] = {
 127        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
 128};
 129
 130static const unsigned int LDO4_suspend_table[] = {
 131        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
 132};
 133
 134static const unsigned int LDO5_table[] = {
 135        2900000, 3000000, 3100000, 3300000,
 136};
 137
 138static const unsigned int LDO5_suspend_table[] = {
 139        2900000, 0, 0, 0,
 140};
 141
 142static const unsigned int LDO6_table[] = {
 143        1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
 144};
 145
 146static const unsigned int LDO6_suspend_table[] = {
 147        1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
 148};
 149
 150static const unsigned int LDO7_table[] = {
 151        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 152};
 153
 154static const unsigned int LDO7_suspend_table[] = {
 155        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 156};
 157
 158static const unsigned int LDO8_table[] = {
 159        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 160};
 161
 162static const unsigned int LDO8_suspend_table[] = {
 163        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 164};
 165
 166static const unsigned int LDO9_table[] = {
 167        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 168};
 169
 170static const unsigned int LDO9_suspend_table[] = {
 171        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 172};
 173
 174static 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
 179static 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
 184static 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
 189static 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
 194static const unsigned int LDO13_table[] = {
 195        1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
 196};
 197
 198static const unsigned int LDO13_suspend_table[] = {
 199        0,
 200};
 201
 202static const unsigned int LDO14_table[] = {
 203        1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
 204};
 205
 206static const unsigned int LDO14_suspend_table[] = {
 207        1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
 208};
 209
 210static 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
 223static struct regulator_ops pm8607_regulator_ops = {
 224        .list_voltage   = pm8607_list_voltage,
 225        .set_voltage_sel = regulator_set_voltage_sel_regmap,
 226        .get_voltage_sel = regulator_get_voltage_sel_regmap,
 227        .enable = regulator_enable_regmap,
 228        .disable = regulator_disable_regmap,
 229        .is_enabled = regulator_is_enabled_regmap,
 230};
 231
 232static struct regulator_ops pm8606_preg_ops = {
 233        .enable         = regulator_enable_regmap,
 234        .disable        = regulator_disable_regmap,
 235        .is_enabled     = regulator_is_enabled_regmap,
 236};
 237
 238#define PM8606_PREG(ereg, ebit)                                         \
 239{                                                                       \
 240        .desc   = {                                                     \
 241                .name   = "PREG",                                       \
 242                .ops    = &pm8606_preg_ops,                             \
 243                .type   = REGULATOR_CURRENT,                            \
 244                .id     = PM8606_ID_PREG,                               \
 245                .owner  = THIS_MODULE,                                  \
 246                .enable_reg = PM8606_##ereg,                            \
 247                .enable_mask = (ebit),                                  \
 248                .enable_is_inverted = true,                             \
 249        },                                                              \
 250}
 251
 252#define PM8607_DVC(vreg, ureg, ubit, ereg, ebit)                        \
 253{                                                                       \
 254        .desc   = {                                                     \
 255                .name   = #vreg,                                        \
 256                .ops    = &pm8607_regulator_ops,                        \
 257                .type   = REGULATOR_VOLTAGE,                            \
 258                .id     = PM8607_ID_##vreg,                             \
 259                .owner  = THIS_MODULE,                                  \
 260                .n_voltages = ARRAY_SIZE(vreg##_table),                 \
 261                .vsel_reg = PM8607_##vreg,                              \
 262                .vsel_mask = ARRAY_SIZE(vreg##_table) - 1,              \
 263                .apply_reg = PM8607_##ureg,                             \
 264                .apply_bit = (ubit),                                    \
 265                .enable_reg = PM8607_##ereg,                            \
 266                .enable_mask = 1 << (ebit),                             \
 267        },                                                              \
 268        .slope_double   = (0),                                          \
 269        .vol_table      = (unsigned int *)&vreg##_table,                \
 270        .vol_suspend    = (unsigned int *)&vreg##_suspend_table,        \
 271}
 272
 273#define PM8607_LDO(_id, vreg, shift, ereg, ebit)                        \
 274{                                                                       \
 275        .desc   = {                                                     \
 276                .name   = "LDO" #_id,                                   \
 277                .ops    = &pm8607_regulator_ops,                        \
 278                .type   = REGULATOR_VOLTAGE,                            \
 279                .id     = PM8607_ID_LDO##_id,                           \
 280                .owner  = THIS_MODULE,                                  \
 281                .n_voltages = ARRAY_SIZE(LDO##_id##_table),             \
 282                .vsel_reg = PM8607_##vreg,                              \
 283                .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
 284                .enable_reg = PM8607_##ereg,                            \
 285                .enable_mask = 1 << (ebit),                             \
 286        },                                                              \
 287        .slope_double   = (0),                                          \
 288        .vol_table      = (unsigned int *)&LDO##_id##_table,            \
 289        .vol_suspend    = (unsigned int *)&LDO##_id##_suspend_table,    \
 290}
 291
 292static struct pm8607_regulator_info pm8607_regulator_info[] = {
 293        PM8607_DVC(BUCK1, GO, BIT(0), SUPPLIES_EN11, 0),
 294        PM8607_DVC(BUCK2, GO, BIT(1), SUPPLIES_EN11, 1),
 295        PM8607_DVC(BUCK3, GO, BIT(2), SUPPLIES_EN11, 2),
 296
 297        PM8607_LDO(1,         LDO1, 0, SUPPLIES_EN11, 3),
 298        PM8607_LDO(2,         LDO2, 0, SUPPLIES_EN11, 4),
 299        PM8607_LDO(3,         LDO3, 0, SUPPLIES_EN11, 5),
 300        PM8607_LDO(4,         LDO4, 0, SUPPLIES_EN11, 6),
 301        PM8607_LDO(5,         LDO5, 0, SUPPLIES_EN11, 7),
 302        PM8607_LDO(6,         LDO6, 0, SUPPLIES_EN12, 0),
 303        PM8607_LDO(7,         LDO7, 0, SUPPLIES_EN12, 1),
 304        PM8607_LDO(8,         LDO8, 0, SUPPLIES_EN12, 2),
 305        PM8607_LDO(9,         LDO9, 0, SUPPLIES_EN12, 3),
 306        PM8607_LDO(10,        LDO10, 0, SUPPLIES_EN12, 4),
 307        PM8607_LDO(12,        LDO12, 0, SUPPLIES_EN12, 5),
 308        PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
 309        PM8607_LDO(14,        LDO14, 0, SUPPLIES_EN12, 6),
 310};
 311
 312static struct pm8607_regulator_info pm8606_regulator_info[] = {
 313        PM8606_PREG(PREREGULATORB, 5),
 314};
 315
 316#ifdef CONFIG_OF
 317static int pm8607_regulator_dt_init(struct platform_device *pdev,
 318                                    struct pm8607_regulator_info *info,
 319                                    struct regulator_config *config)
 320{
 321        struct device_node *nproot, *np;
 322        nproot = of_node_get(pdev->dev.parent->of_node);
 323        if (!nproot)
 324                return -ENODEV;
 325        nproot = of_find_node_by_name(nproot, "regulators");
 326        if (!nproot) {
 327                dev_err(&pdev->dev, "failed to find regulators node\n");
 328                return -ENODEV;
 329        }
 330        for_each_child_of_node(nproot, np) {
 331                if (!of_node_cmp(np->name, info->desc.name)) {
 332                        config->init_data =
 333                                of_get_regulator_init_data(&pdev->dev, np);
 334                        config->of_node = np;
 335                        break;
 336                }
 337        }
 338        of_node_put(nproot);
 339        return 0;
 340}
 341#else
 342#define pm8607_regulator_dt_init(x, y, z)       (-1)
 343#endif
 344
 345static int pm8607_regulator_probe(struct platform_device *pdev)
 346{
 347        struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
 348        struct pm8607_regulator_info *info = NULL;
 349        struct regulator_init_data *pdata = pdev->dev.platform_data;
 350        struct regulator_config config = { };
 351        struct resource *res;
 352        int i;
 353
 354        res = platform_get_resource(pdev, IORESOURCE_REG, 0);
 355        if (res) {
 356                /* There're resources in 88PM8607 regulator driver */
 357                for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
 358                        info = &pm8607_regulator_info[i];
 359                        if (info->desc.vsel_reg == res->start)
 360                                break;
 361                }
 362                if (i == ARRAY_SIZE(pm8607_regulator_info)) {
 363                        dev_err(&pdev->dev, "Failed to find regulator %llu\n",
 364                                (unsigned long long)res->start);
 365                        return -EINVAL;
 366                }
 367        } else {
 368                /* There's no resource in 88PM8606 PREG regulator driver */
 369                info = &pm8606_regulator_info[0];
 370                /* i is used to check regulator ID */
 371                i = -1;
 372        }
 373        info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
 374        info->i2c_8606 = (chip->id == CHIP_PM8607) ? chip->companion :
 375                        chip->client;
 376        info->chip = chip;
 377
 378        /* check DVC ramp slope double */
 379        if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double)
 380                info->slope_double = 1;
 381
 382        config.dev = &pdev->dev;
 383        config.driver_data = info;
 384
 385        if (pm8607_regulator_dt_init(pdev, info, &config))
 386                if (pdata)
 387                        config.init_data = pdata;
 388
 389        if (chip->id == CHIP_PM8607)
 390                config.regmap = chip->regmap;
 391        else
 392                config.regmap = chip->regmap_companion;
 393
 394        info->regulator = regulator_register(&info->desc, &config);
 395        if (IS_ERR(info->regulator)) {
 396                dev_err(&pdev->dev, "failed to register regulator %s\n",
 397                        info->desc.name);
 398                return PTR_ERR(info->regulator);
 399        }
 400
 401        platform_set_drvdata(pdev, info);
 402        return 0;
 403}
 404
 405static int pm8607_regulator_remove(struct platform_device *pdev)
 406{
 407        struct pm8607_regulator_info *info = platform_get_drvdata(pdev);
 408
 409        regulator_unregister(info->regulator);
 410        return 0;
 411}
 412
 413static struct platform_device_id pm8607_regulator_driver_ids[] = {
 414        {
 415                .name   = "88pm860x-regulator",
 416                .driver_data    = 0,
 417        }, {
 418                .name   = "88pm860x-preg",
 419                .driver_data    = 0,
 420        },
 421        { },
 422};
 423MODULE_DEVICE_TABLE(platform, pm8607_regulator_driver_ids);
 424
 425static struct platform_driver pm8607_regulator_driver = {
 426        .driver         = {
 427                .name   = "88pm860x-regulator",
 428                .owner  = THIS_MODULE,
 429        },
 430        .probe          = pm8607_regulator_probe,
 431        .remove         = pm8607_regulator_remove,
 432        .id_table       = pm8607_regulator_driver_ids,
 433};
 434
 435static int __init pm8607_regulator_init(void)
 436{
 437        return platform_driver_register(&pm8607_regulator_driver);
 438}
 439subsys_initcall(pm8607_regulator_init);
 440
 441static void __exit pm8607_regulator_exit(void)
 442{
 443        platform_driver_unregister(&pm8607_regulator_driver);
 444}
 445module_exit(pm8607_regulator_exit);
 446
 447MODULE_LICENSE("GPL");
 448MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
 449MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
 450MODULE_ALIAS("platform:88pm8607-regulator");
 451
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