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/platform_device.h>
  16#include <linux/regulator/driver.h>
  17#include <linux/regulator/machine.h>
  18#include <linux/mfd/88pm860x.h>
  19#include <linux/module.h>
  20
  21struct pm8607_regulator_info {
  22        struct regulator_desc   desc;
  23        struct pm860x_chip      *chip;
  24        struct regulator_dev    *regulator;
  25        struct i2c_client       *i2c;
  26
  27        unsigned int    *vol_table;
  28        unsigned int    *vol_suspend;
  29
  30        int     update_reg;
  31        int     update_bit;
  32        int     slope_double;
  33};
  34
  35static const unsigned int BUCK1_table[] = {
  36         725000,  750000,  775000,  800000,  825000,  850000,  875000,  900000,
  37         925000,  950000,  975000, 1000000, 1025000, 1050000, 1075000, 1100000,
  38        1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
  39        1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
  40              0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
  41         200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
  42         400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
  43         600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
  44};
  45
  46static const unsigned int BUCK1_suspend_table[] = {
  47              0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
  48         200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
  49         400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
  50         600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
  51         800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
  52        1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
  53        1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
  54        1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
  55};
  56
  57static const unsigned int BUCK2_table[] = {
  58              0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
  59         400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
  60         800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
  61        1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
  62        1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
  63        2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
  64        2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
  65        2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
  66};
  67
  68static const unsigned int BUCK2_suspend_table[] = {
  69              0,   50000,  100000,  150000,  200000,  250000,  300000,  350000,
  70         400000,  450000,  500000,  550000,  600000,  650000,  700000,  750000,
  71         800000,  850000,  900000,  950000, 1000000, 1050000, 1100000, 1150000,
  72        1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
  73        1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
  74        2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
  75        2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
  76        2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
  77};
  78
  79static const unsigned int BUCK3_table[] = {
  80              0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
  81         200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
  82         400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
  83         600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
  84         800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
  85        1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
  86        1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
  87        1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
  88};
  89
  90static const unsigned int BUCK3_suspend_table[] = {
  91              0,   25000,   50000,   75000,  100000,  125000,  150000,  175000,
  92         200000,  225000,  250000,  275000,  300000,  325000,  350000,  375000,
  93         400000,  425000,  450000,  475000,  500000,  525000,  550000,  575000,
  94         600000,  625000,  650000,  675000,  700000,  725000,  750000,  775000,
  95         800000,  825000,  850000,  875000,  900000,  925000,  950000,  975000,
  96        1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
  97        1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
  98        1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
  99};
 100
 101static const unsigned int LDO1_table[] = {
 102        1800000, 1200000, 2800000, 0,
 103};
 104
 105static const unsigned int LDO1_suspend_table[] = {
 106        1800000, 1200000, 0, 0,
 107};
 108
 109static const unsigned int LDO2_table[] = {
 110        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 111};
 112
 113static const unsigned int LDO2_suspend_table[] = {
 114        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 115};
 116
 117static const unsigned int LDO3_table[] = {
 118        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 119};
 120
 121static const unsigned int LDO3_suspend_table[] = {
 122        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 123};
 124
 125static const unsigned int LDO4_table[] = {
 126        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
 127};
 128
 129static const unsigned int LDO4_suspend_table[] = {
 130        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
 131};
 132
 133static const unsigned int LDO5_table[] = {
 134        2900000, 3000000, 3100000, 3300000,
 135};
 136
 137static const unsigned int LDO5_suspend_table[] = {
 138        2900000, 0, 0, 0,
 139};
 140
 141static const unsigned int LDO6_table[] = {
 142        1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
 143};
 144
 145static const unsigned int LDO6_suspend_table[] = {
 146        1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
 147};
 148
 149static const unsigned int LDO7_table[] = {
 150        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 151};
 152
 153static const unsigned int LDO7_suspend_table[] = {
 154        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 155};
 156
 157static const unsigned int LDO8_table[] = {
 158        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 159};
 160
 161static const unsigned int LDO8_suspend_table[] = {
 162        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 163};
 164
 165static const unsigned int LDO9_table[] = {
 166        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 167};
 168
 169static const unsigned int LDO9_suspend_table[] = {
 170        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 171};
 172
 173static const unsigned int LDO10_table[] = {
 174        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 175        1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
 176};
 177
 178static const unsigned int LDO10_suspend_table[] = {
 179        1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 180        1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
 181};
 182
 183static const unsigned int LDO12_table[] = {
 184        1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
 185        1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
 186};
 187
 188static const unsigned int LDO12_suspend_table[] = {
 189        1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
 190        1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
 191};
 192
 193static const unsigned int LDO13_table[] = {
 194        1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
 195};
 196
 197static const unsigned int LDO13_suspend_table[] = {
 198        0,
 199};
 200
 201static const unsigned int LDO14_table[] = {
 202        1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
 203};
 204
 205static const unsigned int LDO14_suspend_table[] = {
 206        1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
 207};
 208
 209static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
 210{
 211        struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
 212        int ret = -EINVAL;
 213
 214        if (info->vol_table && (index < rdev->desc->n_voltages)) {
 215                ret = info->vol_table[index];
 216                if (info->slope_double)
 217                        ret <<= 1;
 218        }
 219        return ret;
 220}
 221
 222static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
 223{
 224        struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
 225        uint8_t val;
 226        int ret;
 227
 228        val = (uint8_t)(selector << (ffs(rdev->desc->vsel_mask) - 1));
 229
 230        ret = pm860x_set_bits(info->i2c, rdev->desc->vsel_reg,
 231                              rdev->desc->vsel_mask, val);
 232        if (ret)
 233                return ret;
 234        switch (info->desc.id) {
 235        case PM8607_ID_BUCK1:
 236        case PM8607_ID_BUCK3:
 237                ret = pm860x_set_bits(info->i2c, info->update_reg,
 238                                      1 << info->update_bit,
 239                                      1 << info->update_bit);
 240                break;
 241        }
 242        return ret;
 243}
 244
 245static struct regulator_ops pm8607_regulator_ops = {
 246        .list_voltage   = pm8607_list_voltage,
 247        .set_voltage_sel = pm8607_set_voltage_sel,
 248        .get_voltage_sel = regulator_get_voltage_sel_regmap,
 249        .enable = regulator_enable_regmap,
 250        .disable = regulator_disable_regmap,
 251        .is_enabled = regulator_is_enabled_regmap,
 252};
 253
 254#define PM8607_DVC(vreg, ureg, ubit, ereg, ebit)                        \
 255{                                                                       \
 256        .desc   = {                                                     \
 257                .name   = #vreg,                                        \
 258                .ops    = &pm8607_regulator_ops,                        \
 259                .type   = REGULATOR_VOLTAGE,                            \
 260                .id     = PM8607_ID_##vreg,                             \
 261                .owner  = THIS_MODULE,                                  \
 262                .n_voltages = ARRAY_SIZE(vreg##_table),                 \
 263                .vsel_reg = PM8607_##vreg,                              \
 264                .vsel_mask = ARRAY_SIZE(vreg##_table) - 1,              \
 265                .enable_reg = PM8607_##ereg,                            \
 266                .enable_mask = 1 << (ebit),                             \
 267        },                                                              \
 268        .update_reg     = PM8607_##ureg,                                \
 269        .update_bit     = (ubit),                                       \
 270        .slope_double   = (0),                                          \
 271        .vol_table      = (unsigned int *)&vreg##_table,                \
 272        .vol_suspend    = (unsigned int *)&vreg##_suspend_table,        \
 273}
 274
 275#define PM8607_LDO(_id, vreg, shift, ereg, ebit)                        \
 276{                                                                       \
 277        .desc   = {                                                     \
 278                .name   = "LDO" #_id,                                   \
 279                .ops    = &pm8607_regulator_ops,                        \
 280                .type   = REGULATOR_VOLTAGE,                            \
 281                .id     = PM8607_ID_LDO##_id,                           \
 282                .owner  = THIS_MODULE,                                  \
 283                .n_voltages = ARRAY_SIZE(LDO##_id##_table),             \
 284                .vsel_reg = PM8607_##vreg,                              \
 285                .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
 286                .enable_reg = PM8607_##ereg,                            \
 287                .enable_mask = 1 << (ebit),                             \
 288        },                                                              \
 289        .slope_double   = (0),                                          \
 290        .vol_table      = (unsigned int *)&LDO##_id##_table,            \
 291        .vol_suspend    = (unsigned int *)&LDO##_id##_suspend_table,    \
 292}
 293
 294static struct pm8607_regulator_info pm8607_regulator_info[] = {
 295        PM8607_DVC(BUCK1, GO, 0, SUPPLIES_EN11, 0),
 296        PM8607_DVC(BUCK2, GO, 1, SUPPLIES_EN11, 1),
 297        PM8607_DVC(BUCK3, GO, 2, SUPPLIES_EN11, 2),
 298
 299        PM8607_LDO(1,         LDO1, 0, SUPPLIES_EN11, 3),
 300        PM8607_LDO(2,         LDO2, 0, SUPPLIES_EN11, 4),
 301        PM8607_LDO(3,         LDO3, 0, SUPPLIES_EN11, 5),
 302        PM8607_LDO(4,         LDO4, 0, SUPPLIES_EN11, 6),
 303        PM8607_LDO(5,         LDO5, 0, SUPPLIES_EN11, 7),
 304        PM8607_LDO(6,         LDO6, 0, SUPPLIES_EN12, 0),
 305        PM8607_LDO(7,         LDO7, 0, SUPPLIES_EN12, 1),
 306        PM8607_LDO(8,         LDO8, 0, SUPPLIES_EN12, 2),
 307        PM8607_LDO(9,         LDO9, 0, SUPPLIES_EN12, 3),
 308        PM8607_LDO(10,        LDO10, 0, SUPPLIES_EN12, 4),
 309        PM8607_LDO(12,        LDO12, 0, SUPPLIES_EN12, 5),
 310        PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
 311        PM8607_LDO(14,        LDO14, 0, SUPPLIES_EN12, 6),
 312};
 313
 314static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
 315{
 316        struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
 317        struct pm8607_regulator_info *info = NULL;
 318        struct regulator_init_data *pdata = pdev->dev.platform_data;
 319        struct regulator_config config = { };
 320        struct resource *res;
 321        int i;
 322
 323        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
 324        if (res == NULL) {
 325                dev_err(&pdev->dev, "No I/O resource!\n");
 326                return -EINVAL;
 327        }
 328        for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
 329                info = &pm8607_regulator_info[i];
 330                if (info->desc.id == res->start)
 331                        break;
 332        }
 333        if (i == ARRAY_SIZE(pm8607_regulator_info)) {
 334                dev_err(&pdev->dev, "Failed to find regulator %llu\n",
 335                        (unsigned long long)res->start);
 336                return -EINVAL;
 337        }
 338        info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
 339        info->chip = chip;
 340
 341        /* check DVC ramp slope double */
 342        if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double)
 343                info->slope_double = 1;
 344
 345        config.dev = &pdev->dev;
 346        config.init_data = pdata;
 347        config.driver_data = info;
 348
 349        if (chip->id == CHIP_PM8607)
 350                config.regmap = chip->regmap;
 351        else
 352                config.regmap = chip->regmap_companion;
 353
 354        /* replace driver_data with info */
 355        info->regulator = regulator_register(&info->desc, &config);
 356        if (IS_ERR(info->regulator)) {
 357                dev_err(&pdev->dev, "failed to register regulator %s\n",
 358                        info->desc.name);
 359                return PTR_ERR(info->regulator);
 360        }
 361
 362        platform_set_drvdata(pdev, info);
 363        return 0;
 364}
 365
 366static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
 367{
 368        struct pm8607_regulator_info *info = platform_get_drvdata(pdev);
 369
 370        platform_set_drvdata(pdev, NULL);
 371        regulator_unregister(info->regulator);
 372        return 0;
 373}
 374
 375static struct platform_driver pm8607_regulator_driver = {
 376        .driver         = {
 377                .name   = "88pm860x-regulator",
 378                .owner  = THIS_MODULE,
 379        },
 380        .probe          = pm8607_regulator_probe,
 381        .remove         = __devexit_p(pm8607_regulator_remove),
 382};
 383
 384static int __init pm8607_regulator_init(void)
 385{
 386        return platform_driver_register(&pm8607_regulator_driver);
 387}
 388subsys_initcall(pm8607_regulator_init);
 389
 390static void __exit pm8607_regulator_exit(void)
 391{
 392        platform_driver_unregister(&pm8607_regulator_driver);
 393}
 394module_exit(pm8607_regulator_exit);
 395
 396MODULE_LICENSE("GPL");
 397MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
 398MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
 399MODULE_ALIAS("platform:88pm8607-regulator");
 400
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