drivers/regulator/pfuze100-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 //
   3 // Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
   4
   5 #include <linux/kernel.h>
   6 #include <linux/module.h>
   7 #include <linux/init.h>
   8 #include <linux/err.h>
   9 #include <linux/of.h>
  10 #include <linux/of_device.h>
  11 #include <linux/regulator/of_regulator.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/regulator/driver.h>
  14 #include <linux/regulator/machine.h>
  15 #include <linux/regulator/pfuze100.h>
  16 #include <linux/i2c.h>
  17 #include <linux/slab.h>
  18 #include <linux/regmap.h>
  19
  20 #define PFUZE_FLAG_DISABLE_SW   BIT(1)
  21
  22 #define PFUZE_NUMREGS           128
  23 #define PFUZE100_VOL_OFFSET     0
  24 #define PFUZE100_STANDBY_OFFSET 1
  25 #define PFUZE100_MODE_OFFSET    3
  26 #define PFUZE100_CONF_OFFSET    4
  27
  28 #define PFUZE100_DEVICEID       0x0
  29 #define PFUZE100_REVID          0x3
  30 #define PFUZE100_FABID          0x4
  31
  32 #define PFUZE100_COINVOL        0x1a
  33 #define PFUZE100_SW1ABVOL       0x20
  34 #define PFUZE100_SW1ABMODE      0x23
  35 #define PFUZE100_SW1CVOL        0x2e
  36 #define PFUZE100_SW1CMODE       0x31
  37 #define PFUZE100_SW2VOL         0x35
  38 #define PFUZE100_SW2MODE        0x38
  39 #define PFUZE100_SW3AVOL        0x3c
  40 #define PFUZE100_SW3AMODE       0x3f
  41 #define PFUZE100_SW3BVOL        0x43
  42 #define PFUZE100_SW3BMODE       0x46
  43 #define PFUZE100_SW4VOL         0x4a
  44 #define PFUZE100_SW4MODE        0x4d
  45 #define PFUZE100_SWBSTCON1      0x66
  46 #define PFUZE100_VREFDDRCON     0x6a
  47 #define PFUZE100_VSNVSVOL       0x6b
  48 #define PFUZE100_VGEN1VOL       0x6c
  49 #define PFUZE100_VGEN2VOL       0x6d
  50 #define PFUZE100_VGEN3VOL       0x6e
  51 #define PFUZE100_VGEN4VOL       0x6f
  52 #define PFUZE100_VGEN5VOL       0x70
  53 #define PFUZE100_VGEN6VOL       0x71
  54
  55 #define PFUZE100_SWxMODE_MASK   0xf
  56 #define PFUZE100_SWxMODE_APS_APS        0x8
  57 #define PFUZE100_SWxMODE_APS_OFF        0x4
  58
  59 #define PFUZE100_VGENxLPWR      BIT(6)
  60 #define PFUZE100_VGENxSTBY      BIT(5)
  61
  62 enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3, PFUZE3001 = 0x31, };
  63
  64 struct pfuze_regulator {
  65         struct regulator_desc desc;
  66         unsigned char stby_reg;
  67         unsigned char stby_mask;
  68         bool sw_reg;
  69 };
  70
  71 struct pfuze_chip {
  72         int     chip_id;
  73         int     flags;
  74         struct regmap *regmap;
  75         struct device *dev;
  76         struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR];
  77         struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR];
  78         struct pfuze_regulator *pfuze_regulators;
  79 };
  80
  81 static const int pfuze100_swbst[] = {
  82         5000000, 5050000, 5100000, 5150000,
  83 };
  84
  85 static const int pfuze100_vsnvs[] = {
  86         1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000,
  87 };
  88
  89 static const int pfuze100_coin[] = {
  90         2500000, 2700000, 2800000, 2900000, 3000000, 3100000, 3200000, 3300000,
  91 };
  92
  93 static const int pfuze3000_sw1a[] = {
  94         700000, 725000, 750000, 775000, 800000, 825000, 850000, 875000,
  95         900000, 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000,
  96         1100000, 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000,
  97         1300000, 1325000, 1350000, 1375000, 1400000, 1425000, 1800000, 3300000,
  98 };
  99
 100 static const int pfuze3000_sw2lo[] = {
 101         1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000,
 102 };
 103
 104 static const int pfuze3000_sw2hi[] = {
 105         2500000, 2800000, 2850000, 3000000, 3100000, 3150000, 3200000, 3300000,
 106 };
 107
 108 static const struct of_device_id pfuze_dt_ids[] = {
 109         { .compatible = "fsl,pfuze100", .data = (void *)PFUZE100},
 110         { .compatible = "fsl,pfuze200", .data = (void *)PFUZE200},
 111         { .compatible = "fsl,pfuze3000", .data = (void *)PFUZE3000},
 112         { .compatible = "fsl,pfuze3001", .data = (void *)PFUZE3001},
 113         { }
 114 };
 115 MODULE_DEVICE_TABLE(of, pfuze_dt_ids);
 116
 117 static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
 118 {
 119         struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev);
 120         int id = rdev_get_id(rdev);
 121         bool reg_has_ramp_delay;
 122         unsigned int ramp_bits = 0;
 123         int ret;
 124
 125         switch (pfuze100->chip_id) {
 126         case PFUZE3001:
 127                 /* no dynamic voltage scaling for PF3001 */
 128                 reg_has_ramp_delay = false;
 129                 break;
 130         case PFUZE3000:
 131                 reg_has_ramp_delay = (id < PFUZE3000_SWBST);
 132                 break;
 133         case PFUZE200:
 134                 reg_has_ramp_delay = (id < PFUZE200_SWBST);
 135                 break;
 136         case PFUZE100:
 137         default:
 138                 reg_has_ramp_delay = (id < PFUZE100_SWBST);
 139                 break;
 140         }
 141
 142         if (reg_has_ramp_delay) {
 143                 if (ramp_delay > 0) {
 144                         ramp_delay = 12500 / ramp_delay;
 145                         ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3);
 146                 }
 147
 148                 ret = regmap_update_bits(pfuze100->regmap,
 149                                          rdev->desc->vsel_reg + 4,
 150                                          0xc0, ramp_bits << 6);
 151                 if (ret < 0)
 152                         dev_err(pfuze100->dev, "ramp failed, err %d\n", ret);
 153         } else {
 154                 ret = -EACCES;
 155         }
 156
 157         return ret;
 158 }
 159
 160 static const struct regulator_ops pfuze100_ldo_regulator_ops = {
 161         .enable = regulator_enable_regmap,
 162         .disable = regulator_disable_regmap,
 163         .is_enabled = regulator_is_enabled_regmap,
 164         .list_voltage = regulator_list_voltage_linear,
 165         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 166         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 167 };
 168
 169 static const struct regulator_ops pfuze100_fixed_regulator_ops = {
 170         .enable = regulator_enable_regmap,
 171         .disable = regulator_disable_regmap,
 172         .is_enabled = regulator_is_enabled_regmap,
 173         .list_voltage = regulator_list_voltage_linear,
 174 };
 175
 176 static const struct regulator_ops pfuze100_sw_regulator_ops = {
 177         .list_voltage = regulator_list_voltage_linear,
 178         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 179         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 180         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 181         .set_ramp_delay = pfuze100_set_ramp_delay,
 182 };
 183
 184 static const struct regulator_ops pfuze100_sw_disable_regulator_ops = {
 185         .enable = regulator_enable_regmap,
 186         .disable = regulator_disable_regmap,
 187         .is_enabled = regulator_is_enabled_regmap,
 188         .list_voltage = regulator_list_voltage_linear,
 189         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 190         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 191         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 192         .set_ramp_delay = pfuze100_set_ramp_delay,
 193 };
 194
 195 static const struct regulator_ops pfuze100_swb_regulator_ops = {
 196         .enable = regulator_enable_regmap,
 197         .disable = regulator_disable_regmap,
 198         .is_enabled = regulator_is_enabled_regmap,
 199         .list_voltage = regulator_list_voltage_table,
 200         .map_voltage = regulator_map_voltage_ascend,
 201         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 202         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 203
 204 };
 205
 206 static const struct regulator_ops pfuze3000_sw_regulator_ops = {
 207         .enable = regulator_enable_regmap,
 208         .disable = regulator_disable_regmap,
 209         .is_enabled = regulator_is_enabled_regmap,
 210         .list_voltage = regulator_list_voltage_table,
 211         .map_voltage = regulator_map_voltage_ascend,
 212         .set_voltage_sel = regulator_set_voltage_sel_regmap,
 213         .get_voltage_sel = regulator_get_voltage_sel_regmap,
 214         .set_voltage_time_sel = regulator_set_voltage_time_sel,
 215         .set_ramp_delay = pfuze100_set_ramp_delay,
 216
 217 };
 218
 219 #define PFUZE100_FIXED_REG(_chip, _name, base, voltage) \
 220         [_chip ## _ ## _name] = {       \
 221                 .desc = {       \
 222                         .name = #_name, \
 223                         .n_voltages = 1,        \
 224                         .ops = &pfuze100_fixed_regulator_ops,   \
 225                         .type = REGULATOR_VOLTAGE,      \
 226                         .id = _chip ## _ ## _name,      \
 227                         .owner = THIS_MODULE,   \
 228                         .min_uV = (voltage),    \
 229                         .enable_reg = (base),   \
 230                         .enable_mask = 0x10,    \
 231                 },      \
 232         }
 233
 234 #define PFUZE100_SW_REG(_chip, _name, base, min, max, step)     \
 235         [_chip ## _ ## _name] = {       \
 236                 .desc = {       \
 237                         .name = #_name,\
 238                         .n_voltages = ((max) - (min)) / (step) + 1,     \
 239                         .ops = &pfuze100_sw_regulator_ops,      \
 240                         .type = REGULATOR_VOLTAGE,      \
 241                         .id = _chip ## _ ## _name,      \
 242                         .owner = THIS_MODULE,   \
 243                         .min_uV = (min),        \
 244                         .uV_step = (step),      \
 245                         .vsel_reg = (base) + PFUZE100_VOL_OFFSET,       \
 246                         .vsel_mask = 0x3f,      \
 247                         .enable_reg = (base) + PFUZE100_MODE_OFFSET,    \
 248                         .enable_mask = 0xf,     \
 249                 },      \
 250                 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET,   \
 251                 .stby_mask = 0x3f,      \
 252                 .sw_reg = true,         \
 253         }
 254
 255 #define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages)    \
 256         [_chip ## _ ##  _name] = {      \
 257                 .desc = {       \
 258                         .name = #_name, \
 259                         .n_voltages = ARRAY_SIZE(voltages),     \
 260                         .ops = &pfuze100_swb_regulator_ops,     \
 261                         .type = REGULATOR_VOLTAGE,      \
 262                         .id = _chip ## _ ## _name,      \
 263                         .owner = THIS_MODULE,   \
 264                         .volt_table = voltages, \
 265                         .vsel_reg = (base),     \
 266                         .vsel_mask = (mask),    \
 267                         .enable_reg = (base),   \
 268                         .enable_mask = 0x48,    \
 269                 },      \
 270         }
 271
 272 #define PFUZE100_VGEN_REG(_chip, _name, base, min, max, step)   \
 273         [_chip ## _ ## _name] = {       \
 274                 .desc = {       \
 275                         .name = #_name, \
 276                         .n_voltages = ((max) - (min)) / (step) + 1,     \
 277                         .ops = &pfuze100_ldo_regulator_ops,     \
 278                         .type = REGULATOR_VOLTAGE,      \
 279                         .id = _chip ## _ ## _name,      \
 280                         .owner = THIS_MODULE,   \
 281                         .min_uV = (min),        \
 282                         .uV_step = (step),      \
 283                         .vsel_reg = (base),     \
 284                         .vsel_mask = 0xf,       \
 285                         .enable_reg = (base),   \
 286                         .enable_mask = 0x10,    \
 287                 },      \
 288                 .stby_reg = (base),     \
 289                 .stby_mask = 0x20,      \
 290         }
 291
 292 #define PFUZE100_COIN_REG(_chip, _name, base, mask, voltages)   \
 293         [_chip ## _ ##  _name] = {      \
 294                 .desc = {       \
 295                         .name = #_name, \
 296                         .n_voltages = ARRAY_SIZE(voltages),     \
 297                         .ops = &pfuze100_swb_regulator_ops,     \
 298                         .type = REGULATOR_VOLTAGE,      \
 299                         .id = _chip ## _ ## _name,      \
 300                         .owner = THIS_MODULE,   \
 301                         .volt_table = voltages, \
 302                         .vsel_reg = (base),     \
 303                         .vsel_mask = (mask),    \
 304                         .enable_reg = (base),   \
 305                         .enable_mask = 0x8,     \
 306                 },      \
 307         }
 308
 309 #define PFUZE3000_VCC_REG(_chip, _name, base, min, max, step)   {       \
 310         .desc = {       \
 311                 .name = #_name, \
 312                 .n_voltages = ((max) - (min)) / (step) + 1,     \
 313                 .ops = &pfuze100_ldo_regulator_ops,     \
 314                 .type = REGULATOR_VOLTAGE,      \
 315                 .id = _chip ## _ ## _name,      \
 316                 .owner = THIS_MODULE,   \
 317                 .min_uV = (min),        \
 318                 .uV_step = (step),      \
 319                 .vsel_reg = (base),     \
 320                 .vsel_mask = 0x3,       \
 321                 .enable_reg = (base),   \
 322                 .enable_mask = 0x10,    \
 323         },      \
 324         .stby_reg = (base),     \
 325         .stby_mask = 0x20,      \
 326 }
 327
 328 /* No linar case for the some switches of PFUZE3000 */
 329 #define PFUZE3000_SW_REG(_chip, _name, base, mask, voltages)    \
 330         [_chip ## _ ##  _name] = {      \
 331                 .desc = {       \
 332                         .name = #_name, \
 333                         .n_voltages = ARRAY_SIZE(voltages),     \
 334                         .ops = &pfuze3000_sw_regulator_ops,     \
 335                         .type = REGULATOR_VOLTAGE,      \
 336                         .id = _chip ## _ ## _name,      \
 337                         .owner = THIS_MODULE,   \
 338                         .volt_table = voltages, \
 339                         .vsel_reg = (base) + PFUZE100_VOL_OFFSET,       \
 340                         .vsel_mask = (mask),    \
 341                         .enable_reg = (base) + PFUZE100_MODE_OFFSET,    \
 342                         .enable_mask = 0xf,     \
 343                         .enable_val = 0x8,      \
 344                         .enable_time = 500,     \
 345                 },      \
 346                 .stby_reg = (base) + PFUZE100_STANDBY_OFFSET,   \
 347                 .stby_mask = (mask),    \
 348                 .sw_reg = true,         \
 349         }
 350
 351 #define PFUZE3000_SW3_REG(_chip, _name, base, min, max, step)   {       \
 352         .desc = {       \
 353                 .name = #_name,\
 354                 .n_voltages = ((max) - (min)) / (step) + 1,     \
 355                 .ops = &pfuze100_sw_regulator_ops,      \
 356                 .type = REGULATOR_VOLTAGE,      \
 357                 .id = _chip ## _ ## _name,      \
 358                 .owner = THIS_MODULE,   \
 359                 .min_uV = (min),        \
 360                 .uV_step = (step),      \
 361                 .vsel_reg = (base) + PFUZE100_VOL_OFFSET,       \
 362                 .vsel_mask = 0xf,       \
 363         },      \
 364         .stby_reg = (base) + PFUZE100_STANDBY_OFFSET,   \
 365         .stby_mask = 0xf,       \
 366 }
 367
 368 /* PFUZE100 */
 369 static struct pfuze_regulator pfuze100_regulators[] = {
 370         PFUZE100_SW_REG(PFUZE100, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
 371         PFUZE100_SW_REG(PFUZE100, SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000),
 372         PFUZE100_SW_REG(PFUZE100, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
 373         PFUZE100_SW_REG(PFUZE100, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
 374         PFUZE100_SW_REG(PFUZE100, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
 375         PFUZE100_SW_REG(PFUZE100, SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000),
 376         PFUZE100_SWB_REG(PFUZE100, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
 377         PFUZE100_SWB_REG(PFUZE100, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
 378         PFUZE100_FIXED_REG(PFUZE100, VREFDDR, PFUZE100_VREFDDRCON, 750000),
 379         PFUZE100_VGEN_REG(PFUZE100, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
 380         PFUZE100_VGEN_REG(PFUZE100, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
 381         PFUZE100_VGEN_REG(PFUZE100, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
 382         PFUZE100_VGEN_REG(PFUZE100, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
 383         PFUZE100_VGEN_REG(PFUZE100, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
 384         PFUZE100_VGEN_REG(PFUZE100, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
 385         PFUZE100_COIN_REG(PFUZE100, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin),
 386 };
 387
 388 static struct pfuze_regulator pfuze200_regulators[] = {
 389         PFUZE100_SW_REG(PFUZE200, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
 390         PFUZE100_SW_REG(PFUZE200, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
 391         PFUZE100_SW_REG(PFUZE200, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
 392         PFUZE100_SW_REG(PFUZE200, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
 393         PFUZE100_SWB_REG(PFUZE200, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
 394         PFUZE100_SWB_REG(PFUZE200, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
 395         PFUZE100_FIXED_REG(PFUZE200, VREFDDR, PFUZE100_VREFDDRCON, 750000),
 396         PFUZE100_VGEN_REG(PFUZE200, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
 397         PFUZE100_VGEN_REG(PFUZE200, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
 398         PFUZE100_VGEN_REG(PFUZE200, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
 399         PFUZE100_VGEN_REG(PFUZE200, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
 400         PFUZE100_VGEN_REG(PFUZE200, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
 401         PFUZE100_VGEN_REG(PFUZE200, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
 402         PFUZE100_COIN_REG(PFUZE200, COIN, PFUZE100_COINVOL, 0x7, pfuze100_coin),
 403 };
 404
 405 static struct pfuze_regulator pfuze3000_regulators[] = {
 406         PFUZE3000_SW_REG(PFUZE3000, SW1A, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a),
 407         PFUZE100_SW_REG(PFUZE3000, SW1B, PFUZE100_SW1CVOL, 700000, 1475000, 25000),
 408         PFUZE3000_SW_REG(PFUZE3000, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo),
 409         PFUZE3000_SW3_REG(PFUZE3000, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000),
 410         PFUZE100_SWB_REG(PFUZE3000, SWBST, PFUZE100_SWBSTCON1, 0x3, pfuze100_swbst),
 411         PFUZE100_SWB_REG(PFUZE3000, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
 412         PFUZE100_FIXED_REG(PFUZE3000, VREFDDR, PFUZE100_VREFDDRCON, 750000),
 413         PFUZE100_VGEN_REG(PFUZE3000, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000),
 414         PFUZE100_VGEN_REG(PFUZE3000, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
 415         PFUZE3000_VCC_REG(PFUZE3000, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000),
 416         PFUZE3000_VCC_REG(PFUZE3000, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000),
 417         PFUZE100_VGEN_REG(PFUZE3000, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
 418         PFUZE100_VGEN_REG(PFUZE3000, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
 419 };
 420
 421 static struct pfuze_regulator pfuze3001_regulators[] = {
 422         PFUZE3000_SW_REG(PFUZE3001, SW1, PFUZE100_SW1ABVOL, 0x1f, pfuze3000_sw1a),
 423         PFUZE3000_SW_REG(PFUZE3001, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo),
 424         PFUZE3000_SW3_REG(PFUZE3001, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000),
 425         PFUZE100_SWB_REG(PFUZE3001, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
 426         PFUZE100_VGEN_REG(PFUZE3001, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000),
 427         PFUZE100_VGEN_REG(PFUZE3001, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
 428         PFUZE3000_VCC_REG(PFUZE3001, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000),
 429         PFUZE3000_VCC_REG(PFUZE3001, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000),
 430         PFUZE100_VGEN_REG(PFUZE3001, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
 431         PFUZE100_VGEN_REG(PFUZE3001, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
 432 };
 433
 434 /* PFUZE100 */
 435 static struct of_regulator_match pfuze100_matches[] = {
 436         { .name = "sw1ab",      },
 437         { .name = "sw1c",       },
 438         { .name = "sw2",        },
 439         { .name = "sw3a",       },
 440         { .name = "sw3b",       },
 441         { .name = "sw4",        },
 442         { .name = "swbst",      },
 443         { .name = "vsnvs",      },
 444         { .name = "vrefddr",    },
 445         { .name = "vgen1",      },
 446         { .name = "vgen2",      },
 447         { .name = "vgen3",      },
 448         { .name = "vgen4",      },
 449         { .name = "vgen5",      },
 450         { .name = "vgen6",      },
 451         { .name = "coin",       },
 452 };
 453
 454 /* PFUZE200 */
 455 static struct of_regulator_match pfuze200_matches[] = {
 456
 457         { .name = "sw1ab",      },
 458         { .name = "sw2",        },
 459         { .name = "sw3a",       },
 460         { .name = "sw3b",       },
 461         { .name = "swbst",      },
 462         { .name = "vsnvs",      },
 463         { .name = "vrefddr",    },
 464         { .name = "vgen1",      },
 465         { .name = "vgen2",      },
 466         { .name = "vgen3",      },
 467         { .name = "vgen4",      },
 468         { .name = "vgen5",      },
 469         { .name = "vgen6",      },
 470         { .name = "coin",       },
 471 };
 472
 473 /* PFUZE3000 */
 474 static struct of_regulator_match pfuze3000_matches[] = {
 475
 476         { .name = "sw1a",       },
 477         { .name = "sw1b",       },
 478         { .name = "sw2",        },
 479         { .name = "sw3",        },
 480         { .name = "swbst",      },
 481         { .name = "vsnvs",      },
 482         { .name = "vrefddr",    },
 483         { .name = "vldo1",      },
 484         { .name = "vldo2",      },
 485         { .name = "vccsd",      },
 486         { .name = "v33",        },
 487         { .name = "vldo3",      },
 488         { .name = "vldo4",      },
 489 };
 490
 491 /* PFUZE3001 */
 492 static struct of_regulator_match pfuze3001_matches[] = {
 493
 494         { .name = "sw1",        },
 495         { .name = "sw2",        },
 496         { .name = "sw3",        },
 497         { .name = "vsnvs",      },
 498         { .name = "vldo1",      },
 499         { .name = "vldo2",      },
 500         { .name = "vccsd",      },
 501         { .name = "v33",        },
 502         { .name = "vldo3",      },
 503         { .name = "vldo4",      },
 504 };
 505
 506 static struct of_regulator_match *pfuze_matches;
 507
 508 static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
 509 {
 510         struct device *dev = chip->dev;
 511         struct device_node *np, *parent;
 512         int ret;
 513
 514         np = of_node_get(dev->of_node);
 515         if (!np)
 516                 return -EINVAL;
 517
 518         if (of_property_read_bool(np, "fsl,pfuze-support-disable-sw"))
 519                 chip->flags |= PFUZE_FLAG_DISABLE_SW;
 520
 521         parent = of_get_child_by_name(np, "regulators");
 522         if (!parent) {
 523                 dev_err(dev, "regulators node not found\n");
 524                 return -EINVAL;
 525         }
 526
 527         switch (chip->chip_id) {
 528         case PFUZE3001:
 529                 pfuze_matches = pfuze3001_matches;
 530                 ret = of_regulator_match(dev, parent, pfuze3001_matches,
 531                                          ARRAY_SIZE(pfuze3001_matches));
 532                 break;
 533         case PFUZE3000:
 534                 pfuze_matches = pfuze3000_matches;
 535                 ret = of_regulator_match(dev, parent, pfuze3000_matches,
 536                                          ARRAY_SIZE(pfuze3000_matches));
 537                 break;
 538         case PFUZE200:
 539                 pfuze_matches = pfuze200_matches;
 540                 ret = of_regulator_match(dev, parent, pfuze200_matches,
 541                                          ARRAY_SIZE(pfuze200_matches));
 542                 break;
 543
 544         case PFUZE100:
 545         default:
 546                 pfuze_matches = pfuze100_matches;
 547                 ret = of_regulator_match(dev, parent, pfuze100_matches,
 548                                          ARRAY_SIZE(pfuze100_matches));
 549                 break;
 550         }
 551
 552         of_node_put(parent);
 553         if (ret < 0) {
 554                 dev_err(dev, "Error parsing regulator init data: %d\n",
 555                         ret);
 556                 return ret;
 557         }
 558
 559         return 0;
 560 }
 561
 562 static inline struct regulator_init_data *match_init_data(int index)
 563 {
 564         return pfuze_matches[index].init_data;
 565 }
 566
 567 static inline struct device_node *match_of_node(int index)
 568 {
 569         return pfuze_matches[index].of_node;
 570 }
 571
 572 static struct pfuze_chip *syspm_pfuze_chip;
 573
 574 static void pfuze_power_off_prepare(void)
 575 {
 576         dev_info(syspm_pfuze_chip->dev, "Configure standby mode for power off");
 577
 578         /* Switch from default mode: APS/APS to APS/Off */
 579         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW1ABMODE,
 580                            PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
 581         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW1CMODE,
 582                            PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
 583         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW2MODE,
 584                            PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
 585         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW3AMODE,
 586                            PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
 587         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW3BMODE,
 588                            PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
 589         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_SW4MODE,
 590                            PFUZE100_SWxMODE_MASK, PFUZE100_SWxMODE_APS_OFF);
 591
 592         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN1VOL,
 593                            PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
 594                            PFUZE100_VGENxSTBY);
 595         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN2VOL,
 596                            PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
 597                            PFUZE100_VGENxSTBY);
 598         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN3VOL,
 599                            PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
 600                            PFUZE100_VGENxSTBY);
 601         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN4VOL,
 602                            PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
 603                            PFUZE100_VGENxSTBY);
 604         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN5VOL,
 605                            PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
 606                            PFUZE100_VGENxSTBY);
 607         regmap_update_bits(syspm_pfuze_chip->regmap, PFUZE100_VGEN6VOL,
 608                            PFUZE100_VGENxLPWR | PFUZE100_VGENxSTBY,
 609                            PFUZE100_VGENxSTBY);
 610 }
 611
 612 static int pfuze_power_off_prepare_init(struct pfuze_chip *pfuze_chip)
 613 {
 614         if (pfuze_chip->chip_id != PFUZE100) {
 615                 dev_warn(pfuze_chip->dev, "Requested pm_power_off_prepare handler for not supported chip\n");
 616                 return -ENODEV;
 617         }
 618
 619         if (pm_power_off_prepare) {
 620                 dev_warn(pfuze_chip->dev, "pm_power_off_prepare is already registered.\n");
 621                 return -EBUSY;
 622         }
 623
 624         if (syspm_pfuze_chip) {
 625                 dev_warn(pfuze_chip->dev, "syspm_pfuze_chip is already set.\n");
 626                 return -EBUSY;
 627         }
 628
 629         syspm_pfuze_chip = pfuze_chip;
 630         pm_power_off_prepare = pfuze_power_off_prepare;
 631
 632         return 0;
 633 }
 634
 635 static int pfuze_identify(struct pfuze_chip *pfuze_chip)
 636 {
 637         unsigned int value;
 638         int ret;
 639
 640         ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value);
 641         if (ret)
 642                 return ret;
 643
 644         if (((value & 0x0f) == 0x8) && (pfuze_chip->chip_id == PFUZE100)) {
 645                 /*
 646                  * Freescale misprogrammed 1-3% of parts prior to week 8 of 2013
 647                  * as ID=8 in PFUZE100
 648                  */
 649                 dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8");
 650         } else if ((value & 0x0f) != pfuze_chip->chip_id &&
 651                    (value & 0xf0) >> 4 != pfuze_chip->chip_id &&
 652                    (value != pfuze_chip->chip_id)) {
 653                 /* device id NOT match with your setting */
 654                 dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
 655                 return -ENODEV;
 656         }
 657
 658         ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);
 659         if (ret)
 660                 return ret;
 661         dev_info(pfuze_chip->dev,
 662                  "Full layer: %x, Metal layer: %x\n",
 663                  (value & 0xf0) >> 4, value & 0x0f);
 664
 665         ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value);
 666         if (ret)
 667                 return ret;
 668         dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n",
 669                  (value & 0xc) >> 2, value & 0x3);
 670
 671         return 0;
 672 }
 673
 674 static const struct regmap_config pfuze_regmap_config = {
 675         .reg_bits = 8,
 676         .val_bits = 8,
 677         .max_register = PFUZE_NUMREGS - 1,
 678         .cache_type = REGCACHE_RBTREE,
 679 };
 680
 681 static int pfuze100_regulator_probe(struct i2c_client *client,
 682                                     const struct i2c_device_id *id)
 683 {
 684         struct pfuze_chip *pfuze_chip;
 685         struct regulator_config config = { };
 686         int i, ret;
 687         const struct of_device_id *match;
 688         u32 regulator_num;
 689         u32 sw_check_start, sw_check_end, sw_hi = 0x40;
 690
 691         pfuze_chip = devm_kzalloc(&client->dev, sizeof(*pfuze_chip),
 692                         GFP_KERNEL);
 693         if (!pfuze_chip)
 694                 return -ENOMEM;
 695
 696         if (client->dev.of_node) {
 697                 match = of_match_device(of_match_ptr(pfuze_dt_ids),
 698                                 &client->dev);
 699                 if (!match) {
 700                         dev_err(&client->dev, "Error: No device match found\n");
 701                         return -ENODEV;
 702                 }
 703                 pfuze_chip->chip_id = (int)(long)match->data;
 704         } else if (id) {
 705                 pfuze_chip->chip_id = id->driver_data;
 706         } else {
 707                 dev_err(&client->dev, "No dts match or id table match found\n");
 708                 return -ENODEV;
 709         }
 710
 711         i2c_set_clientdata(client, pfuze_chip);
 712         pfuze_chip->dev = &client->dev;
 713
 714         pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config);
 715         if (IS_ERR(pfuze_chip->regmap)) {
 716                 ret = PTR_ERR(pfuze_chip->regmap);
 717                 dev_err(&client->dev,
 718                         "regmap allocation failed with err %d\n", ret);
 719                 return ret;
 720         }
 721
 722         ret = pfuze_identify(pfuze_chip);
 723         if (ret) {
 724                 dev_err(&client->dev, "unrecognized pfuze chip ID!\n");
 725                 return ret;
 726         }
 727
 728         /* use the right regulators after identify the right device */
 729         switch (pfuze_chip->chip_id) {
 730         case PFUZE3001:
 731                 pfuze_chip->pfuze_regulators = pfuze3001_regulators;
 732                 regulator_num = ARRAY_SIZE(pfuze3001_regulators);
 733                 sw_check_start = PFUZE3001_SW2;
 734                 sw_check_end = PFUZE3001_SW2;
 735                 sw_hi = 1 << 3;
 736                 break;
 737         case PFUZE3000:
 738                 pfuze_chip->pfuze_regulators = pfuze3000_regulators;
 739                 regulator_num = ARRAY_SIZE(pfuze3000_regulators);
 740                 sw_check_start = PFUZE3000_SW2;
 741                 sw_check_end = PFUZE3000_SW2;
 742                 sw_hi = 1 << 3;
 743                 break;
 744         case PFUZE200:
 745                 pfuze_chip->pfuze_regulators = pfuze200_regulators;
 746                 regulator_num = ARRAY_SIZE(pfuze200_regulators);
 747                 sw_check_start = PFUZE200_SW2;
 748                 sw_check_end = PFUZE200_SW3B;
 749                 break;
 750         case PFUZE100:
 751         default:
 752                 pfuze_chip->pfuze_regulators = pfuze100_regulators;
 753                 regulator_num = ARRAY_SIZE(pfuze100_regulators);
 754                 sw_check_start = PFUZE100_SW2;
 755                 sw_check_end = PFUZE100_SW4;
 756                 break;
 757         }
 758         dev_info(&client->dev, "pfuze%s found.\n",
 759                 (pfuze_chip->chip_id == PFUZE100) ? "100" :
 760                 (((pfuze_chip->chip_id == PFUZE200) ? "200" :
 761                 ((pfuze_chip->chip_id == PFUZE3000) ? "3000" : "3001"))));
 762
 763         memcpy(pfuze_chip->regulator_descs, pfuze_chip->pfuze_regulators,
 764                 sizeof(pfuze_chip->regulator_descs));
 765
 766         ret = pfuze_parse_regulators_dt(pfuze_chip);
 767         if (ret)
 768                 return ret;
 769
 770         for (i = 0; i < regulator_num; i++) {
 771                 struct regulator_init_data *init_data;
 772                 struct regulator_desc *desc;
 773                 int val;
 774
 775                 desc = &pfuze_chip->regulator_descs[i].desc;
 776
 777                 init_data = match_init_data(i);
 778
 779                 /* SW2~SW4 high bit check and modify the voltage value table */
 780                 if (i >= sw_check_start && i <= sw_check_end) {
 781                         ret = regmap_read(pfuze_chip->regmap,
 782                                                 desc->vsel_reg, &val);
 783                         if (ret) {
 784                                 dev_err(&client->dev, "Fails to read from the register.\n");
 785                                 return ret;
 786                         }
 787
 788                         if (val & sw_hi) {
 789                                 if (pfuze_chip->chip_id == PFUZE3000 ||
 790                                         pfuze_chip->chip_id == PFUZE3001) {
 791                                         desc->volt_table = pfuze3000_sw2hi;
 792                                         desc->n_voltages = ARRAY_SIZE(pfuze3000_sw2hi);
 793                                 } else {
 794                                         desc->min_uV = 800000;
 795                                         desc->uV_step = 50000;
 796                                         desc->n_voltages = 51;
 797                                 }
 798                         }
 799                 }
 800
 801                 /*
 802                  * Allow SW regulators to turn off. Checking it trough a flag is
 803                  * a workaround to keep the backward compatibility with existing
 804                  * old dtb's which may relay on the fact that we didn't disable
 805                  * the switched regulator till yet.
 806                  */
 807                 if (pfuze_chip->flags & PFUZE_FLAG_DISABLE_SW) {
 808                         if (pfuze_chip->chip_id == PFUZE100 ||
 809                                 pfuze_chip->chip_id == PFUZE200) {
 810                                 if (pfuze_chip->regulator_descs[i].sw_reg) {
 811                                         desc->ops = &pfuze100_sw_disable_regulator_ops;
 812                                         desc->enable_val = 0x8;
 813                                         desc->disable_val = 0x0;
 814                                         desc->enable_time = 500;
 815                                 }
 816                         }
 817                 }
 818
 819                 config.dev = &client->dev;
 820                 config.init_data = init_data;
 821                 config.driver_data = pfuze_chip;
 822                 config.of_node = match_of_node(i);
 823
 824                 pfuze_chip->regulators[i] =
 825                         devm_regulator_register(&client->dev, desc, &config);
 826                 if (IS_ERR(pfuze_chip->regulators[i])) {
 827                         dev_err(&client->dev, "register regulator%s failed\n",
 828                                 pfuze_chip->pfuze_regulators[i].desc.name);
 829                         return PTR_ERR(pfuze_chip->regulators[i]);
 830                 }
 831         }
 832
 833         if (of_property_read_bool(client->dev.of_node,
 834                                   "fsl,pmic-stby-poweroff"))
 835                 return pfuze_power_off_prepare_init(pfuze_chip);
 836
 837         return 0;
 838 }
 839
 840 static int pfuze100_regulator_remove(struct i2c_client *client)
 841 {
 842         if (syspm_pfuze_chip) {
 843                 syspm_pfuze_chip = NULL;
 844                 pm_power_off_prepare = NULL;
 845         }
 846
 847         return 0;
 848 }
 849
 850 static struct i2c_driver pfuze_driver = {
 851         .driver = {
 852                 .name = "pfuze100-regulator",
 853                 .of_match_table = pfuze_dt_ids,
 854         },
 855         .probe = pfuze100_regulator_probe,
 856         .remove = pfuze100_regulator_remove,
 857 };
 858 module_i2c_driver(pfuze_driver);
 859
 860 MODULE_AUTHOR("Robin Gong <b38343@freescale.com>");
 861 MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/200/3000/3001 PMIC");
 862 MODULE_LICENSE("GPL v2");