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/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
  21 struct 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
  35 static 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
  46 static 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
  57 static 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
  68 static 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
  79 static 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
  90 static 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
 101 static const unsigned int LDO1_table[] = {
 102         1800000, 1200000, 2800000, 0,
 103 };
 104
 105 static const unsigned int LDO1_suspend_table[] = {
 106         1800000, 1200000, 0, 0,
 107 };
 108
 109 static const unsigned int LDO2_table[] = {
 110         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 111 };
 112
 113 static const unsigned int LDO2_suspend_table[] = {
 114         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 115 };
 116
 117 static const unsigned int LDO3_table[] = {
 118         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 119 };
 120
 121 static const unsigned int LDO3_suspend_table[] = {
 122         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 123 };
 124
 125 static const unsigned int LDO4_table[] = {
 126         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
 127 };
 128
 129 static const unsigned int LDO4_suspend_table[] = {
 130         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
 131 };
 132
 133 static const unsigned int LDO5_table[] = {
 134         2900000, 3000000, 3100000, 3300000,
 135 };
 136
 137 static const unsigned int LDO5_suspend_table[] = {
 138         2900000, 0, 0, 0,
 139 };
 140
 141 static const unsigned int LDO6_table[] = {
 142         1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
 143 };
 144
 145 static const unsigned int LDO6_suspend_table[] = {
 146         1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
 147 };
 148
 149 static const unsigned int LDO7_table[] = {
 150         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 151 };
 152
 153 static const unsigned int LDO7_suspend_table[] = {
 154         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 155 };
 156
 157 static const unsigned int LDO8_table[] = {
 158         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 159 };
 160
 161 static const unsigned int LDO8_suspend_table[] = {
 162         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 163 };
 164
 165 static const unsigned int LDO9_table[] = {
 166         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
 167 };
 168
 169 static const unsigned int LDO9_suspend_table[] = {
 170         1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
 171 };
 172
 173 static 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
 178 static 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
 183 static 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
 188 static 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
 193 static const unsigned int LDO13_table[] = {
 194         1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
 195 };
 196
 197 static const unsigned int LDO13_suspend_table[] = {
 198         0,
 199 };
 200
 201 static const unsigned int LDO14_table[] = {
 202         1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
 203 };
 204
 205 static const unsigned int LDO14_suspend_table[] = {
 206         1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
 207 };
 208
 209 static 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
 222 static 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
 245 static 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
 294 static 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
 314 static 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
 366 static 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
 375 static 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
 384 static int __init pm8607_regulator_init(void)
 385 {
 386         return platform_driver_register(&pm8607_regulator_driver);
 387 }
 388 subsys_initcall(pm8607_regulator_init);
 389
 390 static void __exit pm8607_regulator_exit(void)
 391 {
 392         platform_driver_unregister(&pm8607_regulator_driver);
 393 }
 394 module_exit(pm8607_regulator_exit);
 395
 396 MODULE_LICENSE("GPL");
 397 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
 398 MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
 399 MODULE_ALIAS("platform:88pm8607-regulator");