drivers/regulator/tps6594-regulator.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Regulator driver for tps6594 PMIC
   4 //
   5 // Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
   6
   7 #include <linux/device.h>
   8 #include <linux/err.h>
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/module.h>
  12 #include <linux/of.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/regmap.h>
  15 #include <linux/regulator/driver.h>
  16 #include <linux/regulator/machine.h>
  17 #include <linux/regulator/of_regulator.h>
  18
  19 #include <linux/mfd/tps6594.h>
  20
  21 #define BUCK_NB                 5
  22 #define LDO_NB                  4
  23 #define MULTI_PHASE_NB          4
  24 /* TPS6593 and LP8764 supports OV, UV, SC, ILIM */
  25 #define REGS_INT_NB             4
  26 /* TPS65224 supports OV or UV */
  27 #define TPS65224_REGS_INT_NB    1
  28
  29 enum tps6594_regulator_id {
  30         /* DCDC's */
  31         TPS6594_BUCK_1,
  32         TPS6594_BUCK_2,
  33         TPS6594_BUCK_3,
  34         TPS6594_BUCK_4,
  35         TPS6594_BUCK_5,
  36
  37         /* LDOs */
  38         TPS6594_LDO_1,
  39         TPS6594_LDO_2,
  40         TPS6594_LDO_3,
  41         TPS6594_LDO_4,
  42 };
  43
  44 enum tps6594_multi_regulator_id {
  45         /* Multi-phase DCDC's */
  46         TPS6594_BUCK_12,
  47         TPS6594_BUCK_34,
  48         TPS6594_BUCK_123,
  49         TPS6594_BUCK_1234,
  50 };
  51
  52 struct tps6594_regulator_irq_type {
  53         const char *irq_name;
  54         const char *regulator_name;
  55         const char *event_name;
  56         unsigned long event;
  57 };
  58
  59 static struct tps6594_regulator_irq_type tps6594_ext_regulator_irq_types[] = {
  60         { TPS6594_IRQ_NAME_VCCA_OV, "VCCA", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
  61         { TPS6594_IRQ_NAME_VCCA_UV, "VCCA", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
  62         { TPS6594_IRQ_NAME_VMON1_OV, "VMON1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
  63         { TPS6594_IRQ_NAME_VMON1_UV, "VMON1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
  64         { TPS6594_IRQ_NAME_VMON1_RV, "VMON1", "residual voltage",
  65           REGULATOR_EVENT_OVER_VOLTAGE_WARN },
  66         { TPS6594_IRQ_NAME_VMON2_OV, "VMON2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
  67         { TPS6594_IRQ_NAME_VMON2_UV, "VMON2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
  68         { TPS6594_IRQ_NAME_VMON2_RV, "VMON2", "residual voltage",
  69           REGULATOR_EVENT_OVER_VOLTAGE_WARN },
  70 };
  71
  72 static struct tps6594_regulator_irq_type tps65224_ext_regulator_irq_types[] = {
  73         { TPS65224_IRQ_NAME_VCCA_UVOV, "VCCA", "voltage out of range",
  74           REGULATOR_EVENT_REGULATION_OUT },
  75         { TPS65224_IRQ_NAME_VMON1_UVOV, "VMON1", "voltage out of range",
  76           REGULATOR_EVENT_REGULATION_OUT },
  77         { TPS65224_IRQ_NAME_VMON2_UVOV, "VMON2", "voltage out of range",
  78           REGULATOR_EVENT_REGULATION_OUT },
  79 };
  80
  81 struct tps6594_regulator_irq_data {
  82         struct device *dev;
  83         struct tps6594_regulator_irq_type *type;
  84         struct regulator_dev *rdev;
  85 };
  86
  87 struct tps6594_ext_regulator_irq_data {
  88         struct device *dev;
  89         struct tps6594_regulator_irq_type *type;
  90 };
  91
  92 #define TPS6594_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
  93                            _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
  94                            _ct, _ncl, _bpm) \
  95         {                                                               \
  96                 .name                   = _name,                        \
  97                 .of_match               = _of,                          \
  98                 .regulators_node        = of_match_ptr("regulators"),   \
  99                 .supply_name            = _of,                          \
 100                 .id                     = _id,                          \
 101                 .ops                    = &(_ops),                      \
 102                 .n_voltages             = _n,                           \
 103                 .type                   = _type,                        \
 104                 .owner                  = THIS_MODULE,                  \
 105                 .vsel_reg               = _vr,                          \
 106                 .vsel_mask              = _vm,                          \
 107                 .csel_reg               = _cr,                          \
 108                 .csel_mask              = _cm,                          \
 109                 .curr_table             = _ct,                          \
 110                 .n_current_limits       = _ncl,                         \
 111                 .enable_reg             = _er,                          \
 112                 .enable_mask            = _em,                          \
 113                 .volt_table             = NULL,                         \
 114                 .linear_ranges          = _lr,                          \
 115                 .n_linear_ranges        = _nlr,                         \
 116                 .ramp_delay             = _delay,                       \
 117                 .fixed_uV               = _fuv,                         \
 118                 .bypass_reg             = _vr,                          \
 119                 .bypass_mask            = _bpm,                         \
 120         }                                                               \
 121
 122 static const struct linear_range bucks_ranges[] = {
 123         REGULATOR_LINEAR_RANGE(300000, 0x0, 0xe, 20000),
 124         REGULATOR_LINEAR_RANGE(600000, 0xf, 0x72, 5000),
 125         REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
 126         REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xff, 20000),
 127 };
 128
 129 static const struct linear_range ldos_1_2_3_ranges[] = {
 130         REGULATOR_LINEAR_RANGE(600000, 0x4, 0x3a, 50000),
 131 };
 132
 133 static const struct linear_range ldos_4_ranges[] = {
 134         REGULATOR_LINEAR_RANGE(1200000, 0x20, 0x74, 25000),
 135 };
 136
 137 /* Voltage range for TPS65224 Bucks and LDOs */
 138 static const struct linear_range tps65224_bucks_1_ranges[] = {
 139         REGULATOR_LINEAR_RANGE(500000, 0x0a, 0x0e, 20000),
 140         REGULATOR_LINEAR_RANGE(600000, 0x0f, 0x72, 5000),
 141         REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
 142         REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xfd, 20000),
 143 };
 144
 145 static const struct linear_range tps65224_bucks_2_3_4_ranges[] = {
 146         REGULATOR_LINEAR_RANGE(500000, 0x0, 0x1a, 25000),
 147         REGULATOR_LINEAR_RANGE(1200000, 0x1b, 0x45, 50000),
 148 };
 149
 150 static const struct linear_range tps65224_ldos_1_ranges[] = {
 151         REGULATOR_LINEAR_RANGE(1200000, 0xC, 0x36, 50000),
 152 };
 153
 154 static const struct linear_range tps65224_ldos_2_3_ranges[] = {
 155         REGULATOR_LINEAR_RANGE(600000, 0x0, 0x38, 50000),
 156 };
 157
 158 /* Operations permitted on BUCK1/2/3/4/5 */
 159 static const struct regulator_ops tps6594_bucks_ops = {
 160         .is_enabled             = regulator_is_enabled_regmap,
 161         .enable                 = regulator_enable_regmap,
 162         .disable                = regulator_disable_regmap,
 163         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 164         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 165         .list_voltage           = regulator_list_voltage_linear_range,
 166         .map_voltage            = regulator_map_voltage_linear_range,
 167         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
 168
 169 };
 170
 171 /* Operations permitted on LDO1/2/3 */
 172 static const struct regulator_ops tps6594_ldos_1_2_3_ops = {
 173         .is_enabled             = regulator_is_enabled_regmap,
 174         .enable                 = regulator_enable_regmap,
 175         .disable                = regulator_disable_regmap,
 176         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 177         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 178         .list_voltage           = regulator_list_voltage_linear_range,
 179         .map_voltage            = regulator_map_voltage_linear_range,
 180         .set_bypass             = regulator_set_bypass_regmap,
 181         .get_bypass             = regulator_get_bypass_regmap,
 182 };
 183
 184 /* Operations permitted on LDO4 */
 185 static const struct regulator_ops tps6594_ldos_4_ops = {
 186         .is_enabled             = regulator_is_enabled_regmap,
 187         .enable                 = regulator_enable_regmap,
 188         .disable                = regulator_disable_regmap,
 189         .get_voltage_sel        = regulator_get_voltage_sel_regmap,
 190         .set_voltage_sel        = regulator_set_voltage_sel_regmap,
 191         .list_voltage           = regulator_list_voltage_linear_range,
 192         .map_voltage            = regulator_map_voltage_linear_range,
 193 };
 194
 195 static const struct regulator_desc buck_regs[] = {
 196         TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
 197                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 198                           TPS6594_REG_BUCKX_VOUT_1(0),
 199                           TPS6594_MASK_BUCKS_VSET,
 200                           TPS6594_REG_BUCKX_CTRL(0),
 201                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 202                           4, 0, 0, NULL, 0, 0),
 203         TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
 204                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 205                           TPS6594_REG_BUCKX_VOUT_1(1),
 206                           TPS6594_MASK_BUCKS_VSET,
 207                           TPS6594_REG_BUCKX_CTRL(1),
 208                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 209                           4, 0, 0, NULL, 0, 0),
 210         TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
 211                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 212                           TPS6594_REG_BUCKX_VOUT_1(2),
 213                           TPS6594_MASK_BUCKS_VSET,
 214                           TPS6594_REG_BUCKX_CTRL(2),
 215                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 216                           4, 0, 0, NULL, 0, 0),
 217         TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
 218                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 219                           TPS6594_REG_BUCKX_VOUT_1(3),
 220                           TPS6594_MASK_BUCKS_VSET,
 221                           TPS6594_REG_BUCKX_CTRL(3),
 222                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 223                           4, 0, 0, NULL, 0, 0),
 224         TPS6594_REGULATOR("BUCK5", "buck5", TPS6594_BUCK_5,
 225                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 226                           TPS6594_REG_BUCKX_VOUT_1(4),
 227                           TPS6594_MASK_BUCKS_VSET,
 228                           TPS6594_REG_BUCKX_CTRL(4),
 229                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 230                           4, 0, 0, NULL, 0, 0),
 231 };
 232
 233 /* Buck configuration for TPS65224 */
 234 static const struct regulator_desc tps65224_buck_regs[] = {
 235         TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
 236                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCK1_VSET,
 237                           TPS6594_REG_BUCKX_VOUT_1(0),
 238                           TPS65224_MASK_BUCK1_VSET,
 239                           TPS6594_REG_BUCKX_CTRL(0),
 240                           TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_1_ranges,
 241                           4, 0, 0, NULL, 0, 0),
 242         TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
 243                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
 244                           TPS6594_REG_BUCKX_VOUT_1(1),
 245                           TPS65224_MASK_BUCKS_VSET,
 246                           TPS6594_REG_BUCKX_CTRL(1),
 247                           TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
 248                           4, 0, 0, NULL, 0, 0),
 249         TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
 250                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
 251                           TPS6594_REG_BUCKX_VOUT_1(2),
 252                           TPS65224_MASK_BUCKS_VSET,
 253                           TPS6594_REG_BUCKX_CTRL(2),
 254                           TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
 255                           4, 0, 0, NULL, 0, 0),
 256         TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
 257                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
 258                           TPS6594_REG_BUCKX_VOUT_1(3),
 259                           TPS65224_MASK_BUCKS_VSET,
 260                           TPS6594_REG_BUCKX_CTRL(3),
 261                           TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
 262                           4, 0, 0, NULL, 0, 0),
 263 };
 264
 265 static struct tps6594_regulator_irq_type tps6594_buck1_irq_types[] = {
 266         { TPS6594_IRQ_NAME_BUCK1_OV, "BUCK1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 267         { TPS6594_IRQ_NAME_BUCK1_UV, "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 268         { TPS6594_IRQ_NAME_BUCK1_SC, "BUCK1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 269         { TPS6594_IRQ_NAME_BUCK1_ILIM, "BUCK1", "reach ilim, overcurrent",
 270           REGULATOR_EVENT_OVER_CURRENT },
 271 };
 272
 273 static struct tps6594_regulator_irq_type tps6594_buck2_irq_types[] = {
 274         { TPS6594_IRQ_NAME_BUCK2_OV, "BUCK2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 275         { TPS6594_IRQ_NAME_BUCK2_UV, "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 276         { TPS6594_IRQ_NAME_BUCK2_SC, "BUCK2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 277         { TPS6594_IRQ_NAME_BUCK2_ILIM, "BUCK2", "reach ilim, overcurrent",
 278           REGULATOR_EVENT_OVER_CURRENT },
 279 };
 280
 281 static struct tps6594_regulator_irq_type tps6594_buck3_irq_types[] = {
 282         { TPS6594_IRQ_NAME_BUCK3_OV, "BUCK3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 283         { TPS6594_IRQ_NAME_BUCK3_UV, "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 284         { TPS6594_IRQ_NAME_BUCK3_SC, "BUCK3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 285         { TPS6594_IRQ_NAME_BUCK3_ILIM, "BUCK3", "reach ilim, overcurrent",
 286           REGULATOR_EVENT_OVER_CURRENT },
 287 };
 288
 289 static struct tps6594_regulator_irq_type tps6594_buck4_irq_types[] = {
 290         { TPS6594_IRQ_NAME_BUCK4_OV, "BUCK4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 291         { TPS6594_IRQ_NAME_BUCK4_UV, "BUCK4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 292         { TPS6594_IRQ_NAME_BUCK4_SC, "BUCK4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 293         { TPS6594_IRQ_NAME_BUCK4_ILIM, "BUCK4", "reach ilim, overcurrent",
 294           REGULATOR_EVENT_OVER_CURRENT },
 295 };
 296
 297 static struct tps6594_regulator_irq_type tps6594_buck5_irq_types[] = {
 298         { TPS6594_IRQ_NAME_BUCK5_OV, "BUCK5", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 299         { TPS6594_IRQ_NAME_BUCK5_UV, "BUCK5", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 300         { TPS6594_IRQ_NAME_BUCK5_SC, "BUCK5", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 301         { TPS6594_IRQ_NAME_BUCK5_ILIM, "BUCK5", "reach ilim, overcurrent",
 302           REGULATOR_EVENT_OVER_CURRENT },
 303 };
 304
 305 static struct tps6594_regulator_irq_type tps6594_ldo1_irq_types[] = {
 306         { TPS6594_IRQ_NAME_LDO1_OV, "LDO1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 307         { TPS6594_IRQ_NAME_LDO1_UV, "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 308         { TPS6594_IRQ_NAME_LDO1_SC, "LDO1", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 309         { TPS6594_IRQ_NAME_LDO1_ILIM, "LDO1", "reach ilim, overcurrent",
 310           REGULATOR_EVENT_OVER_CURRENT },
 311 };
 312
 313 static struct tps6594_regulator_irq_type tps6594_ldo2_irq_types[] = {
 314         { TPS6594_IRQ_NAME_LDO2_OV, "LDO2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 315         { TPS6594_IRQ_NAME_LDO2_UV, "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 316         { TPS6594_IRQ_NAME_LDO2_SC, "LDO2", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 317         { TPS6594_IRQ_NAME_LDO2_ILIM, "LDO2", "reach ilim, overcurrent",
 318           REGULATOR_EVENT_OVER_CURRENT },
 319 };
 320
 321 static struct tps6594_regulator_irq_type tps6594_ldo3_irq_types[] = {
 322         { TPS6594_IRQ_NAME_LDO3_OV, "LDO3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 323         { TPS6594_IRQ_NAME_LDO3_UV, "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 324         { TPS6594_IRQ_NAME_LDO3_SC, "LDO3", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 325         { TPS6594_IRQ_NAME_LDO3_ILIM, "LDO3", "reach ilim, overcurrent",
 326           REGULATOR_EVENT_OVER_CURRENT },
 327 };
 328
 329 static struct tps6594_regulator_irq_type tps6594_ldo4_irq_types[] = {
 330         { TPS6594_IRQ_NAME_LDO4_OV, "LDO4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
 331         { TPS6594_IRQ_NAME_LDO4_UV, "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
 332         { TPS6594_IRQ_NAME_LDO4_SC, "LDO4", "short circuit", REGULATOR_EVENT_REGULATION_OUT },
 333         { TPS6594_IRQ_NAME_LDO4_ILIM, "LDO4", "reach ilim, overcurrent",
 334           REGULATOR_EVENT_OVER_CURRENT },
 335 };
 336
 337 static struct tps6594_regulator_irq_type tps65224_buck1_irq_types[] = {
 338         { TPS65224_IRQ_NAME_BUCK1_UVOV, "BUCK1", "voltage out of range",
 339           REGULATOR_EVENT_REGULATION_OUT },
 340 };
 341
 342 static struct tps6594_regulator_irq_type tps65224_buck2_irq_types[] = {
 343         { TPS65224_IRQ_NAME_BUCK2_UVOV, "BUCK2", "voltage out of range",
 344           REGULATOR_EVENT_REGULATION_OUT },
 345 };
 346
 347 static struct tps6594_regulator_irq_type tps65224_buck3_irq_types[] = {
 348         { TPS65224_IRQ_NAME_BUCK3_UVOV, "BUCK3", "voltage out of range",
 349           REGULATOR_EVENT_REGULATION_OUT },
 350 };
 351
 352 static struct tps6594_regulator_irq_type tps65224_buck4_irq_types[] = {
 353         { TPS65224_IRQ_NAME_BUCK4_UVOV, "BUCK4", "voltage out of range",
 354           REGULATOR_EVENT_REGULATION_OUT },
 355 };
 356
 357 static struct tps6594_regulator_irq_type tps65224_ldo1_irq_types[] = {
 358         { TPS65224_IRQ_NAME_LDO1_UVOV, "LDO1", "voltage out of range",
 359           REGULATOR_EVENT_REGULATION_OUT },
 360 };
 361
 362 static struct tps6594_regulator_irq_type tps65224_ldo2_irq_types[] = {
 363         { TPS65224_IRQ_NAME_LDO2_UVOV, "LDO2", "voltage out of range",
 364           REGULATOR_EVENT_REGULATION_OUT },
 365 };
 366
 367 static struct tps6594_regulator_irq_type tps65224_ldo3_irq_types[] = {
 368         { TPS65224_IRQ_NAME_LDO3_UVOV, "LDO3", "voltage out of range",
 369           REGULATOR_EVENT_REGULATION_OUT },
 370 };
 371
 372 static struct tps6594_regulator_irq_type *tps6594_bucks_irq_types[] = {
 373         tps6594_buck1_irq_types,
 374         tps6594_buck2_irq_types,
 375         tps6594_buck3_irq_types,
 376         tps6594_buck4_irq_types,
 377         tps6594_buck5_irq_types,
 378 };
 379
 380 static struct tps6594_regulator_irq_type *tps6594_ldos_irq_types[] = {
 381         tps6594_ldo1_irq_types,
 382         tps6594_ldo2_irq_types,
 383         tps6594_ldo3_irq_types,
 384         tps6594_ldo4_irq_types,
 385 };
 386
 387 static struct tps6594_regulator_irq_type *tps65224_bucks_irq_types[] = {
 388         tps65224_buck1_irq_types,
 389         tps65224_buck2_irq_types,
 390         tps65224_buck3_irq_types,
 391         tps65224_buck4_irq_types,
 392 };
 393
 394 static struct tps6594_regulator_irq_type *tps65224_ldos_irq_types[] = {
 395         tps65224_ldo1_irq_types,
 396         tps65224_ldo2_irq_types,
 397         tps65224_ldo3_irq_types,
 398 };
 399
 400 static const struct regulator_desc tps6594_multi_regs[] = {
 401         TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
 402                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 403                           TPS6594_REG_BUCKX_VOUT_1(0),
 404                           TPS6594_MASK_BUCKS_VSET,
 405                           TPS6594_REG_BUCKX_CTRL(0),
 406                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 407                           4, 4000, 0, NULL, 0, 0),
 408         TPS6594_REGULATOR("BUCK34", "buck34", TPS6594_BUCK_3,
 409                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 410                           TPS6594_REG_BUCKX_VOUT_1(2),
 411                           TPS6594_MASK_BUCKS_VSET,
 412                           TPS6594_REG_BUCKX_CTRL(2),
 413                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 414                           4, 0, 0, NULL, 0, 0),
 415         TPS6594_REGULATOR("BUCK123", "buck123", TPS6594_BUCK_1,
 416                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 417                           TPS6594_REG_BUCKX_VOUT_1(0),
 418                           TPS6594_MASK_BUCKS_VSET,
 419                           TPS6594_REG_BUCKX_CTRL(0),
 420                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 421                           4, 4000, 0, NULL, 0, 0),
 422         TPS6594_REGULATOR("BUCK1234", "buck1234", TPS6594_BUCK_1,
 423                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
 424                           TPS6594_REG_BUCKX_VOUT_1(0),
 425                           TPS6594_MASK_BUCKS_VSET,
 426                           TPS6594_REG_BUCKX_CTRL(0),
 427                           TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges,
 428                           4, 4000, 0, NULL, 0, 0),
 429 };
 430
 431 static const struct regulator_desc tps65224_multi_regs[] = {
 432         TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
 433                           REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCK1_VSET,
 434                           TPS6594_REG_BUCKX_VOUT_1(0),
 435                           TPS65224_MASK_BUCK1_VSET,
 436                           TPS6594_REG_BUCKX_CTRL(0),
 437                           TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_1_ranges,
 438                           4, 4000, 0, NULL, 0, 0),
 439 };
 440
 441 static const struct regulator_desc tps6594_ldo_regs[] = {
 442         TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
 443                           REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
 444                           TPS6594_REG_LDOX_VOUT(0),
 445                           TPS6594_MASK_LDO123_VSET,
 446                           TPS6594_REG_LDOX_CTRL(0),
 447                           TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
 448                           1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
 449         TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
 450                           REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
 451                           TPS6594_REG_LDOX_VOUT(1),
 452                           TPS6594_MASK_LDO123_VSET,
 453                           TPS6594_REG_LDOX_CTRL(1),
 454                           TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
 455                           1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
 456         TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
 457                           REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
 458                           TPS6594_REG_LDOX_VOUT(2),
 459                           TPS6594_MASK_LDO123_VSET,
 460                           TPS6594_REG_LDOX_CTRL(2),
 461                           TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges,
 462                           1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
 463         TPS6594_REGULATOR("LDO4", "ldo4", TPS6594_LDO_4,
 464                           REGULATOR_VOLTAGE, tps6594_ldos_4_ops, TPS6594_MASK_LDO4_VSET >> 1,
 465                           TPS6594_REG_LDOX_VOUT(3),
 466                           TPS6594_MASK_LDO4_VSET,
 467                           TPS6594_REG_LDOX_CTRL(3),
 468                           TPS6594_BIT_LDO_EN, 0, 0, ldos_4_ranges,
 469                           1, 0, 0, NULL, 0, 0),
 470 };
 471
 472 static const struct regulator_desc tps65224_ldo_regs[] = {
 473         TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
 474                           REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
 475                           TPS6594_REG_LDOX_VOUT(0),
 476                           TPS6594_MASK_LDO123_VSET,
 477                           TPS6594_REG_LDOX_CTRL(0),
 478                           TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_1_ranges,
 479                           1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
 480         TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
 481                           REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
 482                           TPS6594_REG_LDOX_VOUT(1),
 483                           TPS6594_MASK_LDO123_VSET,
 484                           TPS6594_REG_LDOX_CTRL(1),
 485                           TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_2_3_ranges,
 486                           1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
 487         TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
 488                           REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
 489                           TPS6594_REG_LDOX_VOUT(2),
 490                           TPS6594_MASK_LDO123_VSET,
 491                           TPS6594_REG_LDOX_CTRL(2),
 492                           TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_2_3_ranges,
 493                           1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
 494 };
 495
 496 static irqreturn_t tps6594_regulator_irq_handler(int irq, void *data)
 497 {
 498         struct tps6594_regulator_irq_data *irq_data = data;
 499
 500         if (irq_data->type->event_name[0] == '\0') {
 501                 /* This is the timeout interrupt no specific regulator */
 502                 dev_err(irq_data->dev,
 503                         "System was put in shutdown due to timeout during an active or standby transition.\n");
 504                 return IRQ_HANDLED;
 505         }
 506
 507         dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",
 508                 irq_data->type->event_name, irq_data->type->regulator_name);
 509
 510         regulator_notifier_call_chain(irq_data->rdev,
 511                                       irq_data->type->event, NULL);
 512
 513         return IRQ_HANDLED;
 514 }
 515
 516 static int tps6594_request_reg_irqs(struct platform_device *pdev,
 517                                     struct regulator_dev *rdev,
 518                                     struct tps6594_regulator_irq_data *irq_data,
 519                                     struct tps6594_regulator_irq_type *regs_irq_types,
 520                                     size_t interrupt_cnt,
 521                                     int *irq_idx)
 522 {
 523         struct tps6594_regulator_irq_type *irq_type;
 524         struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
 525         size_t j;
 526         int irq;
 527         int error;
 528
 529         for (j = 0; j < interrupt_cnt; j++) {
 530                 irq_type = &regs_irq_types[j];
 531                 irq = platform_get_irq_byname(pdev, irq_type->irq_name);
 532                 if (irq < 0)
 533                         return -EINVAL;
 534
 535                 irq_data[*irq_idx].dev = tps->dev;
 536                 irq_data[*irq_idx].type = irq_type;
 537                 irq_data[*irq_idx].rdev = rdev;
 538
 539                 error = devm_request_threaded_irq(tps->dev, irq, NULL,
 540                                                   tps6594_regulator_irq_handler, IRQF_ONESHOT,
 541                                                   irq_type->irq_name, &irq_data[*irq_idx]);
 542                 if (error) {
 543                         dev_err(tps->dev, "tps6594 failed to request %s IRQ %d: %d\n",
 544                                 irq_type->irq_name, irq, error);
 545                         return error;
 546                 }
 547                 (*irq_idx)++;
 548         }
 549         return 0;
 550 }
 551
 552 static int tps6594_regulator_probe(struct platform_device *pdev)
 553 {
 554         struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
 555         struct regulator_dev *rdev;
 556         struct device_node *np = NULL;
 557         struct device_node *np_pmic_parent = NULL;
 558         struct regulator_config config = {};
 559         struct tps6594_regulator_irq_data *irq_data;
 560         struct tps6594_ext_regulator_irq_data *irq_ext_reg_data;
 561         struct tps6594_regulator_irq_type *irq_type;
 562         struct tps6594_regulator_irq_type *irq_types;
 563         bool buck_configured[BUCK_NB] = { false };
 564         bool buck_multi[MULTI_PHASE_NB] = { false };
 565
 566         static const char *npname;
 567         int error, i, irq, multi;
 568         int irq_idx = 0;
 569         int buck_idx = 0;
 570         int nr_ldo;
 571         int nr_buck;
 572         int nr_types;
 573         unsigned int irq_count;
 574         unsigned int multi_phase_cnt;
 575         size_t reg_irq_nb;
 576         struct tps6594_regulator_irq_type **bucks_irq_types;
 577         const struct regulator_desc *multi_regs;
 578         struct tps6594_regulator_irq_type **ldos_irq_types;
 579         const struct regulator_desc *ldo_regs;
 580         size_t interrupt_count;
 581
 582         if (tps->chip_id == TPS65224) {
 583                 bucks_irq_types = tps65224_bucks_irq_types;
 584                 interrupt_count = ARRAY_SIZE(tps65224_buck1_irq_types);
 585                 multi_regs = tps65224_multi_regs;
 586                 ldos_irq_types = tps65224_ldos_irq_types;
 587                 ldo_regs = tps65224_ldo_regs;
 588                 multi_phase_cnt = ARRAY_SIZE(tps65224_multi_regs);
 589         } else {
 590                 bucks_irq_types = tps6594_bucks_irq_types;
 591                 interrupt_count = ARRAY_SIZE(tps6594_buck1_irq_types);
 592                 multi_regs = tps6594_multi_regs;
 593                 ldos_irq_types = tps6594_ldos_irq_types;
 594                 ldo_regs = tps6594_ldo_regs;
 595                 multi_phase_cnt = ARRAY_SIZE(tps6594_multi_regs);
 596         }
 597
 598         enum {
 599                 MULTI_BUCK12,
 600                 MULTI_BUCK12_34,
 601                 MULTI_BUCK123,
 602                 MULTI_BUCK1234,
 603         };
 604
 605         config.dev = tps->dev;
 606         config.driver_data = tps;
 607         config.regmap = tps->regmap;
 608
 609         /*
 610          * Switch case defines different possible multi phase config
 611          * This is based on dts buck node name.
 612          * Buck node name must be chosen accordingly.
 613          * Default case is no Multiphase buck.
 614          * In case of Multiphase configuration, value should be defined for
 615          * buck_configured to avoid creating bucks for every buck in multiphase
 616          */
 617         for (multi = 0; multi < multi_phase_cnt; multi++) {
 618                 np = of_find_node_by_name(tps->dev->of_node, multi_regs[multi].supply_name);
 619                 npname = of_node_full_name(np);
 620                 np_pmic_parent = of_get_parent(of_get_parent(np));
 621                 if (of_node_cmp(of_node_full_name(np_pmic_parent), tps->dev->of_node->full_name))
 622                         continue;
 623                 if (strcmp(npname, multi_regs[multi].supply_name) == 0) {
 624                         switch (multi) {
 625                         case MULTI_BUCK12:
 626                                 buck_multi[0] = true;
 627                                 buck_configured[0] = true;
 628                                 buck_configured[1] = true;
 629                                 break;
 630                         /* multiphase buck34 is supported only with buck12 */
 631                         case MULTI_BUCK12_34:
 632                                 buck_multi[0] = true;
 633                                 buck_multi[1] = true;
 634                                 buck_configured[0] = true;
 635                                 buck_configured[1] = true;
 636                                 buck_configured[2] = true;
 637                                 buck_configured[3] = true;
 638                                 break;
 639                         case MULTI_BUCK123:
 640                                 buck_multi[2] = true;
 641                                 buck_configured[0] = true;
 642                                 buck_configured[1] = true;
 643                                 buck_configured[2] = true;
 644                                 break;
 645                         case MULTI_BUCK1234:
 646                                 buck_multi[3] = true;
 647                                 buck_configured[0] = true;
 648                                 buck_configured[1] = true;
 649                                 buck_configured[2] = true;
 650                                 buck_configured[3] = true;
 651                                 break;
 652                         }
 653                 }
 654         }
 655
 656         if (tps->chip_id == TPS65224) {
 657                 nr_buck = ARRAY_SIZE(tps65224_buck_regs);
 658                 nr_ldo = ARRAY_SIZE(tps65224_ldo_regs);
 659                 nr_types = TPS65224_REGS_INT_NB;
 660         } else {
 661                 nr_buck = ARRAY_SIZE(buck_regs);
 662                 nr_ldo = (tps->chip_id == LP8764) ? 0 : ARRAY_SIZE(tps6594_ldo_regs);
 663                 nr_types = REGS_INT_NB;
 664         }
 665
 666         reg_irq_nb = nr_types * (nr_buck + nr_ldo);
 667
 668         irq_data = devm_kmalloc_array(tps->dev, reg_irq_nb,
 669                                       sizeof(struct tps6594_regulator_irq_data), GFP_KERNEL);
 670         if (!irq_data)
 671                 return -ENOMEM;
 672
 673         for (i = 0; i < multi_phase_cnt; i++) {
 674                 if (!buck_multi[i])
 675                         continue;
 676
 677                 rdev = devm_regulator_register(&pdev->dev, &multi_regs[i], &config);
 678                 if (IS_ERR(rdev))
 679                         return dev_err_probe(tps->dev, PTR_ERR(rdev),
 680                                              "failed to register %s regulator\n",
 681                                              pdev->name);
 682
 683                 /* config multiphase buck12+buck34 */
 684                 if (i == MULTI_BUCK12_34)
 685                         buck_idx = 2;
 686
 687                 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
 688                                                  bucks_irq_types[buck_idx],
 689                                                  interrupt_count, &irq_idx);
 690                 if (error)
 691                         return error;
 692
 693                 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
 694                                                  bucks_irq_types[buck_idx + 1],
 695                                                  interrupt_count, &irq_idx);
 696                 if (error)
 697                         return error;
 698
 699                 if (i == MULTI_BUCK123 || i == MULTI_BUCK1234) {
 700                         error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
 701                                                          tps6594_bucks_irq_types[buck_idx + 2],
 702                                                          interrupt_count,
 703                                                          &irq_idx);
 704                         if (error)
 705                                 return error;
 706                 }
 707                 if (i == MULTI_BUCK1234) {
 708                         error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
 709                                                          tps6594_bucks_irq_types[buck_idx + 3],
 710                                                          interrupt_count,
 711                                                          &irq_idx);
 712                         if (error)
 713                                 return error;
 714                 }
 715         }
 716
 717         for (i = 0; i < nr_buck; i++) {
 718                 if (buck_configured[i])
 719                         continue;
 720
 721                 const struct regulator_desc *buck_cfg = (tps->chip_id == TPS65224) ?
 722                                                          tps65224_buck_regs : buck_regs;
 723
 724                 rdev = devm_regulator_register(&pdev->dev, &buck_cfg[i], &config);
 725                 if (IS_ERR(rdev))
 726                         return dev_err_probe(tps->dev, PTR_ERR(rdev),
 727                                              "failed to register %s regulator\n", pdev->name);
 728
 729                 error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
 730                                                  bucks_irq_types[i], interrupt_count, &irq_idx);
 731                 if (error)
 732                         return error;
 733         }
 734
 735         /* LP8764 doesn't have LDO */
 736         if (tps->chip_id != LP8764) {
 737                 for (i = 0; i < nr_ldo; i++) {
 738                         rdev = devm_regulator_register(&pdev->dev, &ldo_regs[i], &config);
 739                         if (IS_ERR(rdev))
 740                                 return dev_err_probe(tps->dev, PTR_ERR(rdev),
 741                                                      "failed to register %s regulator\n",
 742                                                      pdev->name);
 743
 744                         error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
 745                                                          ldos_irq_types[i], interrupt_count,
 746                                                          &irq_idx);
 747                         if (error)
 748                                 return error;
 749                 }
 750         }
 751
 752         if (tps->chip_id == TPS65224) {
 753                 irq_types = tps65224_ext_regulator_irq_types;
 754                 irq_count = ARRAY_SIZE(tps65224_ext_regulator_irq_types);
 755         } else {
 756                 irq_types = tps6594_ext_regulator_irq_types;
 757                 if (tps->chip_id == LP8764)
 758                         irq_count = ARRAY_SIZE(tps6594_ext_regulator_irq_types);
 759                 else
 760                         /* TPS6593 supports only VCCA OV and UV */
 761                         irq_count = 2;
 762         }
 763
 764         irq_ext_reg_data = devm_kmalloc_array(tps->dev,
 765                                               irq_count,
 766                                               sizeof(struct tps6594_ext_regulator_irq_data),
 767                                               GFP_KERNEL);
 768         if (!irq_ext_reg_data)
 769                 return -ENOMEM;
 770
 771         for (i = 0; i < irq_count; ++i) {
 772                 irq_type = &irq_types[i];
 773                 irq = platform_get_irq_byname(pdev, irq_type->irq_name);
 774                 if (irq < 0)
 775                         return -EINVAL;
 776
 777                 irq_ext_reg_data[i].dev = tps->dev;
 778                 irq_ext_reg_data[i].type = irq_type;
 779
 780                 error = devm_request_threaded_irq(tps->dev, irq, NULL,
 781                                                   tps6594_regulator_irq_handler,
 782                                                   IRQF_ONESHOT,
 783                                                   irq_type->irq_name,
 784                                                   &irq_ext_reg_data[i]);
 785                 if (error)
 786                         return dev_err_probe(tps->dev, error,
 787                                              "failed to request %s IRQ %d\n",
 788                                              irq_type->irq_name, irq);
 789         }
 790         return 0;
 791 }
 792
 793 static struct platform_driver tps6594_regulator_driver = {
 794         .driver = {
 795                 .name = "tps6594-regulator",
 796         },
 797         .probe = tps6594_regulator_probe,
 798 };
 799
 800 module_platform_driver(tps6594_regulator_driver);
 801
 802 MODULE_ALIAS("platform:tps6594-regulator");
 803 MODULE_AUTHOR("Jerome Neanne <[email protected]>");
 804 MODULE_AUTHOR("Nirmala Devi Mal Nadar <[email protected]>");
 805 MODULE_DESCRIPTION("TPS6594 voltage regulator driver");
 806 MODULE_LICENSE("GPL");