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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 | // SPDX-License-Identifier: GPL-2.0 // // Copyright (c) 2022 MediaTek Inc. // Copyright (c) 2022 BayLibre, SAS. // Author: Chen Zhong <chen.zhong@mediatek.com> // Author: Fabien Parent <fparent@baylibre.com> // Author: Alexandre Mergnat <amergnat@baylibre.com> // // Based on mt6397-regulator.c // #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/mfd/mt6397/core.h> #include <linux/mfd/mt6357/registers.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/mt6357-regulator.h> #include <linux/regulator/of_regulator.h> /* * MT6357 regulators' information * * @desc: standard fields of regulator description. * @da_vsel_reg: Monitor register for query buck's voltage. * @da_vsel_mask: Mask for query buck's voltage. */ struct mt6357_regulator_info { struct regulator_desc desc; u32 da_vsel_reg; u32 da_vsel_mask; }; #define MT6357_BUCK(match, vreg, min, max, step, \ volt_ranges, vosel_reg, vosel_mask, _da_vsel_mask) \ [MT6357_ID_##vreg] = { \ .desc = { \ .name = #vreg, \ .of_match = of_match_ptr(match), \ .regulators_node = "regulators", \ .ops = &mt6357_volt_range_ops, \ .type = REGULATOR_VOLTAGE, \ .id = MT6357_ID_##vreg, \ .owner = THIS_MODULE, \ .n_voltages = ((max) - (min)) / (step) + 1, \ .linear_ranges = volt_ranges, \ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ .vsel_reg = vosel_reg, \ .vsel_mask = vosel_mask, \ .enable_reg = MT6357_BUCK_##vreg##_CON0, \ .enable_mask = BIT(0), \ }, \ .da_vsel_reg = MT6357_BUCK_##vreg##_DBG0, \ .da_vsel_mask = vosel_mask, \ } #define MT6357_LDO(match, vreg, ldo_volt_table, \ enreg, vosel, vosel_mask) \ [MT6357_ID_##vreg] = { \ .desc = { \ .name = #vreg, \ .of_match = of_match_ptr(match), \ .regulators_node = "regulators", \ .ops = &mt6357_volt_table_ops, \ .type = REGULATOR_VOLTAGE, \ .id = MT6357_ID_##vreg, \ .owner = THIS_MODULE, \ .n_voltages = ARRAY_SIZE(ldo_volt_table), \ .volt_table = ldo_volt_table, \ .vsel_reg = vosel, \ .vsel_mask = vosel_mask, \ .enable_reg = enreg, \ .enable_mask = BIT(0), \ }, \ } #define MT6357_LDO1(match, vreg, min, max, step, volt_ranges, \ enreg, vosel, vosel_mask) \ [MT6357_ID_##vreg] = { \ .desc = { \ .name = #vreg, \ .of_match = of_match_ptr(match), \ .regulators_node = "regulators", \ .ops = &mt6357_volt_range_ops, \ .type = REGULATOR_VOLTAGE, \ .id = MT6357_ID_##vreg, \ .owner = THIS_MODULE, \ .n_voltages = ((max) - (min)) / (step) + 1, \ .linear_ranges = volt_ranges, \ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ .vsel_reg = vosel, \ .vsel_mask = vosel_mask, \ .enable_reg = enreg, \ .enable_mask = BIT(0), \ }, \ .da_vsel_reg = MT6357_LDO_##vreg##_DBG0, \ .da_vsel_mask = 0x7f00, \ } #define MT6357_REG_FIXED(match, vreg, volt) \ [MT6357_ID_##vreg] = { \ .desc = { \ .name = #vreg, \ .of_match = of_match_ptr(match), \ .regulators_node = "regulators", \ .ops = &mt6357_volt_fixed_ops, \ .type = REGULATOR_VOLTAGE, \ .id = MT6357_ID_##vreg, \ .owner = THIS_MODULE, \ .n_voltages = 1, \ .enable_reg = MT6357_LDO_##vreg##_CON0, \ .enable_mask = BIT(0), \ .min_uV = volt, \ }, \ } /** * mt6357_get_buck_voltage_sel - get_voltage_sel for regmap users * * @rdev: regulator to operate on * * Regulators that use regmap for their register I/O can set the * da_vsel_reg and da_vsel_mask fields in the info structure and * then use this as their get_voltage_vsel operation. */ static int mt6357_get_buck_voltage_sel(struct regulator_dev *rdev) { int ret, regval; struct mt6357_regulator_info *info = rdev_get_drvdata(rdev); ret = regmap_read(rdev->regmap, info->da_vsel_reg, ®val); if (ret != 0) { dev_err(&rdev->dev, "Failed to get mt6357 Buck %s vsel reg: %d\n", info->desc.name, ret); return ret; } regval &= info->da_vsel_mask; regval >>= ffs(info->da_vsel_mask) - 1; return regval; } static const struct regulator_ops mt6357_volt_range_ops = { .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = mt6357_get_buck_voltage_sel, .set_voltage_time_sel = regulator_set_voltage_time_sel, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, }; static const struct regulator_ops mt6357_volt_table_ops = { .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_iterate, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, }; static const struct regulator_ops mt6357_volt_fixed_ops = { .list_voltage = regulator_list_voltage_linear, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, }; static const int vxo22_voltages[] = { 2200000, 0, 2400000, }; static const int vefuse_voltages[] = { 1200000, 1300000, 1500000, 0, 1800000, 0, 0, 0, 0, 2800000, 2900000, 3000000, 0, 3300000, }; static const int vcn33_voltages[] = { 0, 3300000, 3400000, 3500000, }; static const int vcama_voltages[] = { 0, 0, 0, 0, 0, 0, 0, 2500000, 0, 0, 2800000, }; static const int vcamd_voltages[] = { 0, 0, 0, 0, 1000000, 1100000, 1200000, 1300000, 0, 1500000, 0, 0, 1800000, }; static const int vldo28_voltages[] = { 0, 2800000, 0, 3000000, }; static const int vdram_voltages[] = { 0, 1100000, 1200000, }; static const int vsim_voltages[] = { 0, 0, 0, 1700000, 1800000, 0, 0, 0, 2700000, 0, 0, 3000000, 3100000, }; static const int vibr_voltages[] = { 1200000, 1300000, 1500000, 0, 1800000, 2000000, 0, 0, 0, 2800000, 0, 3000000, 0, 3300000, }; static const int vmc_voltages[] = { 0, 0, 0, 0, 1800000, 0, 0, 0, 0, 0, 2900000, 3000000, 0, 3300000, }; static const int vmch_voltages[] = { 0, 0, 2900000, 3000000, 0, 3300000, }; static const int vemc_voltages[] = { 0, 0, 2900000, 3000000, 0, 3300000, }; static const int vusb_voltages[] = { 0, 0, 0, 3000000, 3100000, }; static const struct linear_range buck_volt_range1[] = { REGULATOR_LINEAR_RANGE(518750, 0, 0x7f, 6250), }; static const struct linear_range buck_volt_range2[] = { REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 6250), }; static const struct linear_range buck_volt_range3[] = { REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000), }; static const struct linear_range buck_volt_range4[] = { REGULATOR_LINEAR_RANGE(1200000, 0, 0x7f, 12500), }; /* The array is indexed by id(MT6357_ID_XXX) */ static struct mt6357_regulator_info mt6357_regulators[] = { /* Bucks */ MT6357_BUCK("buck-vcore", VCORE, 518750, 1312500, 6250, buck_volt_range1, MT6357_BUCK_VCORE_ELR0, 0x7f, 0x7f), MT6357_BUCK("buck-vproc", VPROC, 518750, 1312500, 6250, buck_volt_range1, MT6357_BUCK_VPROC_ELR0, 0x7f, 0x7f), MT6357_BUCK("buck-vmodem", VMODEM, 500000, 1293750, 6250, buck_volt_range2, MT6357_BUCK_VMODEM_ELR0, 0x7f, 0x7f), MT6357_BUCK("buck-vpa", VPA, 500000, 3650000, 50000, buck_volt_range3, MT6357_BUCK_VPA_CON1, 0x3f, 0x3f), MT6357_BUCK("buck-vs1", VS1, 1200000, 2787500, 12500, buck_volt_range4, MT6357_BUCK_VS1_ELR0, 0x7f, 0x7f), /* LDOs */ MT6357_LDO("ldo-vcama", VCAMA, vcama_voltages, MT6357_LDO_VCAMA_CON0, MT6357_VCAMA_ANA_CON0, 0xf00), MT6357_LDO("ldo-vcamd", VCAMD, vcamd_voltages, MT6357_LDO_VCAMD_CON0, MT6357_VCAMD_ANA_CON0, 0xf00), MT6357_LDO("ldo-vcn33-bt", VCN33_BT, vcn33_voltages, MT6357_LDO_VCN33_CON0_0, MT6357_VCN33_ANA_CON0, 0x300), MT6357_LDO("ldo-vcn33-wifi", VCN33_WIFI, vcn33_voltages, MT6357_LDO_VCN33_CON0_1, MT6357_VCN33_ANA_CON0, 0x300), MT6357_LDO("ldo-vdram", VDRAM, vdram_voltages, MT6357_LDO_VDRAM_CON0, MT6357_VDRAM_ELR_2, 0x300), MT6357_LDO("ldo-vefuse", VEFUSE, vefuse_voltages, MT6357_LDO_VEFUSE_CON0, MT6357_VEFUSE_ANA_CON0, 0xf00), MT6357_LDO("ldo-vemc", VEMC, vemc_voltages, MT6357_LDO_VEMC_CON0, MT6357_VEMC_ANA_CON0, 0x700), MT6357_LDO("ldo-vibr", VIBR, vibr_voltages, MT6357_LDO_VIBR_CON0, MT6357_VIBR_ANA_CON0, 0xf00), MT6357_LDO("ldo-vldo28", VLDO28, vldo28_voltages, MT6357_LDO_VLDO28_CON0_0, MT6357_VLDO28_ANA_CON0, 0x300), MT6357_LDO("ldo-vmc", VMC, vmc_voltages, MT6357_LDO_VMC_CON0, MT6357_VMC_ANA_CON0, 0xf00), MT6357_LDO("ldo-vmch", VMCH, vmch_voltages, MT6357_LDO_VMCH_CON0, MT6357_VMCH_ANA_CON0, 0x700), MT6357_LDO("ldo-vsim1", VSIM1, vsim_voltages, MT6357_LDO_VSIM1_CON0, MT6357_VSIM1_ANA_CON0, 0xf00), MT6357_LDO("ldo-vsim2", VSIM2, vsim_voltages, MT6357_LDO_VSIM2_CON0, MT6357_VSIM2_ANA_CON0, 0xf00), MT6357_LDO("ldo-vusb33", VUSB33, vusb_voltages, MT6357_LDO_VUSB33_CON0_0, MT6357_VUSB33_ANA_CON0, 0x700), MT6357_LDO("ldo-vxo22", VXO22, vxo22_voltages, MT6357_LDO_VXO22_CON0, MT6357_VXO22_ANA_CON0, 0x300), MT6357_LDO1("ldo-vsram-proc", VSRAM_PROC, 518750, 1312500, 6250, buck_volt_range1, MT6357_LDO_VSRAM_PROC_CON0, MT6357_LDO_VSRAM_CON0, 0x7f00), MT6357_LDO1("ldo-vsram-others", VSRAM_OTHERS, 518750, 1312500, 6250, buck_volt_range1, MT6357_LDO_VSRAM_OTHERS_CON0, MT6357_LDO_VSRAM_CON1, 0x7f00), MT6357_REG_FIXED("ldo-vaud28", VAUD28, 2800000), MT6357_REG_FIXED("ldo-vaux18", VAUX18, 1800000), MT6357_REG_FIXED("ldo-vcamio18", VCAMIO, 1800000), MT6357_REG_FIXED("ldo-vcn18", VCN18, 1800000), MT6357_REG_FIXED("ldo-vcn28", VCN28, 2800000), MT6357_REG_FIXED("ldo-vfe28", VFE28, 2800000), MT6357_REG_FIXED("ldo-vio18", VIO18, 1800000), MT6357_REG_FIXED("ldo-vio28", VIO28, 2800000), MT6357_REG_FIXED("ldo-vrf12", VRF12, 1200000), MT6357_REG_FIXED("ldo-vrf18", VRF18, 1800000), }; static int mt6357_regulator_probe(struct platform_device *pdev) { struct mt6397_chip *mt6357 = dev_get_drvdata(pdev->dev.parent); struct regulator_config config = {}; struct regulator_dev *rdev; int i; pdev->dev.of_node = pdev->dev.parent->of_node; for (i = 0; i < MT6357_MAX_REGULATOR; i++) { config.dev = &pdev->dev; config.driver_data = &mt6357_regulators[i]; config.regmap = mt6357->regmap; rdev = devm_regulator_register(&pdev->dev, &mt6357_regulators[i].desc, &config); if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register %s\n", mt6357_regulators[i].desc.name); return PTR_ERR(rdev); } } return 0; } static const struct platform_device_id mt6357_platform_ids[] = { { "mt6357-regulator" }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(platform, mt6357_platform_ids); static struct platform_driver mt6357_regulator_driver = { .driver = { .name = "mt6357-regulator", .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, .probe = mt6357_regulator_probe, .id_table = mt6357_platform_ids, }; module_platform_driver(mt6357_regulator_driver); MODULE_AUTHOR("Chen Zhong <chen.zhong@mediatek.com>"); MODULE_AUTHOR("Fabien Parent <fabien.parent@linaro.org>"); MODULE_AUTHOR("Alexandre Mergnat <amergnat@baylibre.com>"); MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6357 PMIC"); MODULE_LICENSE("GPL"); |