1 // SPDX-License-Identifier: GPL-2.0-only 2 #include <linux/i2c.h> 3 #include <linux/module.h> 4 #include <linux/platform_device.h> 5 #include <linux/regmap.h> 6 #include <linux/regulator/driver.h> 7 8 #include <linux/mfd/88pm886.h> 9 10 static const struct regmap_config pm886_regulator_regmap_config = { 11 .reg_bits = 8, 12 .val_bits = 8, 13 .max_register = PM886_REG_BUCK5_VOUT, 14 }; 15 16 static const struct regulator_ops pm886_ldo_ops = { 17 .list_voltage = regulator_list_voltage_table, 18 .map_voltage = regulator_map_voltage_iterate, 19 .set_voltage_sel = regulator_set_voltage_sel_regmap, 20 .get_voltage_sel = regulator_get_voltage_sel_regmap, 21 .enable = regulator_enable_regmap, 22 .disable = regulator_disable_regmap, 23 .is_enabled = regulator_is_enabled_regmap, 24 }; 25 26 static const struct regulator_ops pm886_buck_ops = { 27 .list_voltage = regulator_list_voltage_linear_range, 28 .map_voltage = regulator_map_voltage_linear_range, 29 .set_voltage_sel = regulator_set_voltage_sel_regmap, 30 .get_voltage_sel = regulator_get_voltage_sel_regmap, 31 .enable = regulator_enable_regmap, 32 .disable = regulator_disable_regmap, 33 .is_enabled = regulator_is_enabled_regmap, 34 }; 35 36 static const unsigned int pm886_ldo_volt_table1[] = { 37 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000, 38 }; 39 40 static const unsigned int pm886_ldo_volt_table2[] = { 41 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000, 42 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, 43 }; 44 45 static const unsigned int pm886_ldo_volt_table3[] = { 46 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000, 47 }; 48 49 static const struct linear_range pm886_buck_volt_ranges1[] = { 50 REGULATOR_LINEAR_RANGE(600000, 0, 79, 12500), 51 REGULATOR_LINEAR_RANGE(1600000, 80, 84, 50000), 52 }; 53 54 static const struct linear_range pm886_buck_volt_ranges2[] = { 55 REGULATOR_LINEAR_RANGE(600000, 0, 79, 12500), 56 REGULATOR_LINEAR_RANGE(1600000, 80, 114, 50000), 57 }; 58 59 static struct regulator_desc pm886_regulators[] = { 60 { 61 .name = "LDO1", 62 .regulators_node = "regulators", 63 .of_match = "ldo1", 64 .ops = &pm886_ldo_ops, 65 .type = REGULATOR_VOLTAGE, 66 .enable_reg = PM886_REG_LDO_EN1, 67 .enable_mask = BIT(0), 68 .volt_table = pm886_ldo_volt_table1, 69 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table1), 70 .vsel_reg = PM886_REG_LDO1_VOUT, 71 .vsel_mask = PM886_LDO_VSEL_MASK, 72 }, 73 { 74 .name = "LDO2", 75 .regulators_node = "regulators", 76 .of_match = "ldo2", 77 .ops = &pm886_ldo_ops, 78 .type = REGULATOR_VOLTAGE, 79 .enable_reg = PM886_REG_LDO_EN1, 80 .enable_mask = BIT(1), 81 .volt_table = pm886_ldo_volt_table1, 82 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table1), 83 .vsel_reg = PM886_REG_LDO2_VOUT, 84 .vsel_mask = PM886_LDO_VSEL_MASK, 85 }, 86 { 87 .name = "LDO3", 88 .regulators_node = "regulators", 89 .of_match = "ldo3", 90 .ops = &pm886_ldo_ops, 91 .type = REGULATOR_VOLTAGE, 92 .enable_reg = PM886_REG_LDO_EN1, 93 .enable_mask = BIT(2), 94 .volt_table = pm886_ldo_volt_table1, 95 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table1), 96 .vsel_reg = PM886_REG_LDO3_VOUT, 97 .vsel_mask = PM886_LDO_VSEL_MASK, 98 }, 99 { 100 .name = "LDO4", 101 .regulators_node = "regulators", 102 .of_match = "ldo4", 103 .ops = &pm886_ldo_ops, 104 .type = REGULATOR_VOLTAGE, 105 .enable_reg = PM886_REG_LDO_EN1, 106 .enable_mask = BIT(3), 107 .volt_table = pm886_ldo_volt_table2, 108 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 109 .vsel_reg = PM886_REG_LDO4_VOUT, 110 .vsel_mask = PM886_LDO_VSEL_MASK, 111 }, 112 { 113 .name = "LDO5", 114 .regulators_node = "regulators", 115 .of_match = "ldo5", 116 .ops = &pm886_ldo_ops, 117 .type = REGULATOR_VOLTAGE, 118 .enable_reg = PM886_REG_LDO_EN1, 119 .enable_mask = BIT(4), 120 .volt_table = pm886_ldo_volt_table2, 121 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 122 .vsel_reg = PM886_REG_LDO5_VOUT, 123 .vsel_mask = PM886_LDO_VSEL_MASK, 124 }, 125 { 126 .name = "LDO6", 127 .regulators_node = "regulators", 128 .of_match = "ldo6", 129 .ops = &pm886_ldo_ops, 130 .type = REGULATOR_VOLTAGE, 131 .enable_reg = PM886_REG_LDO_EN1, 132 .enable_mask = BIT(5), 133 .volt_table = pm886_ldo_volt_table2, 134 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 135 .vsel_reg = PM886_REG_LDO6_VOUT, 136 .vsel_mask = PM886_LDO_VSEL_MASK, 137 }, 138 { 139 .name = "LDO7", 140 .regulators_node = "regulators", 141 .of_match = "ldo7", 142 .ops = &pm886_ldo_ops, 143 .type = REGULATOR_VOLTAGE, 144 .enable_reg = PM886_REG_LDO_EN1, 145 .enable_mask = BIT(6), 146 .volt_table = pm886_ldo_volt_table2, 147 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 148 .vsel_reg = PM886_REG_LDO7_VOUT, 149 .vsel_mask = PM886_LDO_VSEL_MASK, 150 }, 151 { 152 .name = "LDO8", 153 .regulators_node = "regulators", 154 .of_match = "ldo8", 155 .ops = &pm886_ldo_ops, 156 .type = REGULATOR_VOLTAGE, 157 .enable_reg = PM886_REG_LDO_EN1, 158 .enable_mask = BIT(7), 159 .volt_table = pm886_ldo_volt_table2, 160 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 161 .vsel_reg = PM886_REG_LDO8_VOUT, 162 .vsel_mask = PM886_LDO_VSEL_MASK, 163 }, 164 { 165 .name = "LDO9", 166 .regulators_node = "regulators", 167 .of_match = "ldo9", 168 .ops = &pm886_ldo_ops, 169 .type = REGULATOR_VOLTAGE, 170 .enable_reg = PM886_REG_LDO_EN2, 171 .enable_mask = BIT(0), 172 .volt_table = pm886_ldo_volt_table2, 173 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 174 .vsel_reg = PM886_REG_LDO9_VOUT, 175 .vsel_mask = PM886_LDO_VSEL_MASK, 176 }, 177 { 178 .name = "LDO10", 179 .regulators_node = "regulators", 180 .of_match = "ldo10", 181 .ops = &pm886_ldo_ops, 182 .type = REGULATOR_VOLTAGE, 183 .enable_reg = PM886_REG_LDO_EN2, 184 .enable_mask = BIT(1), 185 .volt_table = pm886_ldo_volt_table2, 186 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 187 .vsel_reg = PM886_REG_LDO10_VOUT, 188 .vsel_mask = PM886_LDO_VSEL_MASK, 189 }, 190 { 191 .name = "LDO11", 192 .regulators_node = "regulators", 193 .of_match = "ldo11", 194 .ops = &pm886_ldo_ops, 195 .type = REGULATOR_VOLTAGE, 196 .enable_reg = PM886_REG_LDO_EN2, 197 .enable_mask = BIT(2), 198 .volt_table = pm886_ldo_volt_table2, 199 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 200 .vsel_reg = PM886_REG_LDO11_VOUT, 201 .vsel_mask = PM886_LDO_VSEL_MASK, 202 }, 203 { 204 .name = "LDO12", 205 .regulators_node = "regulators", 206 .of_match = "ldo12", 207 .ops = &pm886_ldo_ops, 208 .type = REGULATOR_VOLTAGE, 209 .enable_reg = PM886_REG_LDO_EN2, 210 .enable_mask = BIT(3), 211 .volt_table = pm886_ldo_volt_table2, 212 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 213 .vsel_reg = PM886_REG_LDO12_VOUT, 214 .vsel_mask = PM886_LDO_VSEL_MASK, 215 }, 216 { 217 .name = "LDO13", 218 .regulators_node = "regulators", 219 .of_match = "ldo13", 220 .ops = &pm886_ldo_ops, 221 .type = REGULATOR_VOLTAGE, 222 .enable_reg = PM886_REG_LDO_EN2, 223 .enable_mask = BIT(4), 224 .volt_table = pm886_ldo_volt_table2, 225 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 226 .vsel_reg = PM886_REG_LDO13_VOUT, 227 .vsel_mask = PM886_LDO_VSEL_MASK, 228 }, 229 { 230 .name = "LDO14", 231 .regulators_node = "regulators", 232 .of_match = "ldo14", 233 .ops = &pm886_ldo_ops, 234 .type = REGULATOR_VOLTAGE, 235 .enable_reg = PM886_REG_LDO_EN2, 236 .enable_mask = BIT(5), 237 .volt_table = pm886_ldo_volt_table2, 238 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 239 .vsel_reg = PM886_REG_LDO14_VOUT, 240 .vsel_mask = PM886_LDO_VSEL_MASK, 241 }, 242 { 243 .name = "LDO15", 244 .regulators_node = "regulators", 245 .of_match = "ldo15", 246 .ops = &pm886_ldo_ops, 247 .type = REGULATOR_VOLTAGE, 248 .enable_reg = PM886_REG_LDO_EN2, 249 .enable_mask = BIT(6), 250 .volt_table = pm886_ldo_volt_table2, 251 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2), 252 .vsel_reg = PM886_REG_LDO15_VOUT, 253 .vsel_mask = PM886_LDO_VSEL_MASK, 254 }, 255 { 256 .name = "LDO16", 257 .regulators_node = "regulators", 258 .of_match = "ldo16", 259 .ops = &pm886_ldo_ops, 260 .type = REGULATOR_VOLTAGE, 261 .enable_reg = PM886_REG_LDO_EN2, 262 .enable_mask = BIT(7), 263 .volt_table = pm886_ldo_volt_table3, 264 .n_voltages = ARRAY_SIZE(pm886_ldo_volt_table3), 265 .vsel_reg = PM886_REG_LDO16_VOUT, 266 .vsel_mask = PM886_LDO_VSEL_MASK, 267 }, 268 { 269 .name = "buck1", 270 .regulators_node = "regulators", 271 .of_match = "buck1", 272 .ops = &pm886_buck_ops, 273 .type = REGULATOR_VOLTAGE, 274 .n_voltages = 85, 275 .linear_ranges = pm886_buck_volt_ranges1, 276 .n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges1), 277 .vsel_reg = PM886_REG_BUCK1_VOUT, 278 .vsel_mask = PM886_BUCK_VSEL_MASK, 279 .enable_reg = PM886_REG_BUCK_EN, 280 .enable_mask = BIT(0), 281 }, 282 { 283 .name = "buck2", 284 .regulators_node = "regulators", 285 .of_match = "buck2", 286 .ops = &pm886_buck_ops, 287 .type = REGULATOR_VOLTAGE, 288 .n_voltages = 115, 289 .linear_ranges = pm886_buck_volt_ranges2, 290 .n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges2), 291 .vsel_reg = PM886_REG_BUCK2_VOUT, 292 .vsel_mask = PM886_BUCK_VSEL_MASK, 293 .enable_reg = PM886_REG_BUCK_EN, 294 .enable_mask = BIT(1), 295 }, 296 { 297 .name = "buck3", 298 .regulators_node = "regulators", 299 .of_match = "buck3", 300 .ops = &pm886_buck_ops, 301 .type = REGULATOR_VOLTAGE, 302 .n_voltages = 115, 303 .linear_ranges = pm886_buck_volt_ranges2, 304 .n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges2), 305 .vsel_reg = PM886_REG_BUCK3_VOUT, 306 .vsel_mask = PM886_BUCK_VSEL_MASK, 307 .enable_reg = PM886_REG_BUCK_EN, 308 .enable_mask = BIT(2), 309 }, 310 { 311 .name = "buck4", 312 .regulators_node = "regulators", 313 .of_match = "buck4", 314 .ops = &pm886_buck_ops, 315 .type = REGULATOR_VOLTAGE, 316 .n_voltages = 115, 317 .linear_ranges = pm886_buck_volt_ranges2, 318 .n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges2), 319 .vsel_reg = PM886_REG_BUCK4_VOUT, 320 .vsel_mask = PM886_BUCK_VSEL_MASK, 321 .enable_reg = PM886_REG_BUCK_EN, 322 .enable_mask = BIT(3), 323 }, 324 { 325 .name = "buck5", 326 .regulators_node = "regulators", 327 .of_match = "buck5", 328 .ops = &pm886_buck_ops, 329 .type = REGULATOR_VOLTAGE, 330 .n_voltages = 115, 331 .linear_ranges = pm886_buck_volt_ranges2, 332 .n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges2), 333 .vsel_reg = PM886_REG_BUCK5_VOUT, 334 .vsel_mask = PM886_BUCK_VSEL_MASK, 335 .enable_reg = PM886_REG_BUCK_EN, 336 .enable_mask = BIT(4), 337 }, 338 }; 339 340 static int pm886_regulator_probe(struct platform_device *pdev) 341 { 342 struct pm886_chip *chip = dev_get_drvdata(pdev->dev.parent); 343 struct regulator_config rcfg = { }; 344 struct device *dev = &pdev->dev; 345 struct regulator_desc *rdesc; 346 struct regulator_dev *rdev; 347 struct i2c_client *page; 348 struct regmap *regmap; 349 350 page = devm_i2c_new_dummy_device(dev, chip->client->adapter, 351 chip->client->addr + PM886_PAGE_OFFSET_REGULATORS); 352 if (IS_ERR(page)) 353 return dev_err_probe(dev, PTR_ERR(page), 354 "Failed to initialize regulators client\n"); 355 356 regmap = devm_regmap_init_i2c(page, &pm886_regulator_regmap_config); 357 if (IS_ERR(regmap)) 358 return dev_err_probe(dev, PTR_ERR(regmap), 359 "Failed to initialize regulators regmap\n"); 360 rcfg.regmap = regmap; 361 362 rcfg.dev = dev->parent; 363 364 for (int i = 0; i < ARRAY_SIZE(pm886_regulators); i++) { 365 rdesc = &pm886_regulators[i]; 366 rdev = devm_regulator_register(dev, rdesc, &rcfg); 367 if (IS_ERR(rdev)) 368 return dev_err_probe(dev, PTR_ERR(rdev), 369 "Failed to register %s\n", rdesc->name); 370 } 371 372 return 0; 373 } 374 375 static const struct platform_device_id pm886_regulator_id_table[] = { 376 { "88pm886-regulator", }, 377 { } 378 }; 379 MODULE_DEVICE_TABLE(platform, pm886_regulator_id_table); 380 381 static struct platform_driver pm886_regulator_driver = { 382 .driver = { 383 .name = "88pm886-regulator", 384 }, 385 .probe = pm886_regulator_probe, 386 .id_table = pm886_regulator_id_table, 387 }; 388 module_platform_driver(pm886_regulator_driver); 389 390 MODULE_DESCRIPTION("Marvell 88PM886 PMIC regulator driver"); 391 MODULE_AUTHOR("Karel Balej <balejk@matfyz.cz>"); 392 MODULE_LICENSE("GPL"); 393