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1// SPDX-License-Identifier: GPL-2.02//3// Copyright (c) 2022 MediaTek Inc.4// Copyright (c) 2022 BayLibre, SAS.5// Author: Chen Zhong <chen.zhong@mediatek.com>6// Author: Fabien Parent <fparent@baylibre.com>7// Author: Alexandre Mergnat <amergnat@baylibre.com>8//9// Based on mt6397-regulator.c10//11 12#include <linux/module.h>13#include <linux/of.h>14#include <linux/platform_device.h>15#include <linux/regmap.h>16#include <linux/mfd/mt6397/core.h>17#include <linux/mfd/mt6357/registers.h>18#include <linux/regulator/driver.h>19#include <linux/regulator/machine.h>20#include <linux/regulator/mt6357-regulator.h>21#include <linux/regulator/of_regulator.h>22 23/*24 * MT6357 regulators' information25 *26 * @desc: standard fields of regulator description.27 * @da_vsel_reg: Monitor register for query buck's voltage.28 * @da_vsel_mask: Mask for query buck's voltage.29 */30struct mt6357_regulator_info {31 struct regulator_desc desc;32 u32 da_vsel_reg;33 u32 da_vsel_mask;34};35 36#define MT6357_BUCK(match, vreg, min, max, step, \37 volt_ranges, vosel_reg, vosel_mask, _da_vsel_mask) \38[MT6357_ID_##vreg] = { \39 .desc = { \40 .name = #vreg, \41 .of_match = of_match_ptr(match), \42 .regulators_node = "regulators", \43 .ops = &mt6357_volt_range_ops, \44 .type = REGULATOR_VOLTAGE, \45 .id = MT6357_ID_##vreg, \46 .owner = THIS_MODULE, \47 .n_voltages = ((max) - (min)) / (step) + 1, \48 .linear_ranges = volt_ranges, \49 .n_linear_ranges = ARRAY_SIZE(volt_ranges), \50 .vsel_reg = vosel_reg, \51 .vsel_mask = vosel_mask, \52 .enable_reg = MT6357_BUCK_##vreg##_CON0, \53 .enable_mask = BIT(0), \54 }, \55 .da_vsel_reg = MT6357_BUCK_##vreg##_DBG0, \56 .da_vsel_mask = vosel_mask, \57}58 59#define MT6357_LDO(match, vreg, ldo_volt_table, \60 enreg, vosel, vosel_mask) \61[MT6357_ID_##vreg] = { \62 .desc = { \63 .name = #vreg, \64 .of_match = of_match_ptr(match), \65 .regulators_node = "regulators", \66 .ops = &mt6357_volt_table_ops, \67 .type = REGULATOR_VOLTAGE, \68 .id = MT6357_ID_##vreg, \69 .owner = THIS_MODULE, \70 .n_voltages = ARRAY_SIZE(ldo_volt_table), \71 .volt_table = ldo_volt_table, \72 .vsel_reg = vosel, \73 .vsel_mask = vosel_mask, \74 .enable_reg = enreg, \75 .enable_mask = BIT(0), \76 }, \77}78 79#define MT6357_LDO1(match, vreg, min, max, step, volt_ranges, \80 enreg, vosel, vosel_mask) \81[MT6357_ID_##vreg] = { \82 .desc = { \83 .name = #vreg, \84 .of_match = of_match_ptr(match), \85 .regulators_node = "regulators", \86 .ops = &mt6357_volt_range_ops, \87 .type = REGULATOR_VOLTAGE, \88 .id = MT6357_ID_##vreg, \89 .owner = THIS_MODULE, \90 .n_voltages = ((max) - (min)) / (step) + 1, \91 .linear_ranges = volt_ranges, \92 .n_linear_ranges = ARRAY_SIZE(volt_ranges), \93 .vsel_reg = vosel, \94 .vsel_mask = vosel_mask, \95 .enable_reg = enreg, \96 .enable_mask = BIT(0), \97 }, \98 .da_vsel_reg = MT6357_LDO_##vreg##_DBG0, \99 .da_vsel_mask = 0x7f00, \100}101 102#define MT6357_REG_FIXED(match, vreg, volt) \103[MT6357_ID_##vreg] = { \104 .desc = { \105 .name = #vreg, \106 .of_match = of_match_ptr(match), \107 .regulators_node = "regulators", \108 .ops = &mt6357_volt_fixed_ops, \109 .type = REGULATOR_VOLTAGE, \110 .id = MT6357_ID_##vreg, \111 .owner = THIS_MODULE, \112 .n_voltages = 1, \113 .enable_reg = MT6357_LDO_##vreg##_CON0, \114 .enable_mask = BIT(0), \115 .min_uV = volt, \116 }, \117}118 119/**120 * mt6357_get_buck_voltage_sel - get_voltage_sel for regmap users121 *122 * @rdev: regulator to operate on123 *124 * Regulators that use regmap for their register I/O can set the125 * da_vsel_reg and da_vsel_mask fields in the info structure and126 * then use this as their get_voltage_sel operation.127 */128static int mt6357_get_buck_voltage_sel(struct regulator_dev *rdev)129{130 int ret, regval;131 struct mt6357_regulator_info *info = rdev_get_drvdata(rdev);132 133 ret = regmap_read(rdev->regmap, info->da_vsel_reg, ®val);134 if (ret != 0) {135 dev_err(&rdev->dev,136 "Failed to get mt6357 Buck %s vsel reg: %d\n",137 info->desc.name, ret);138 return ret;139 }140 141 regval &= info->da_vsel_mask;142 regval >>= ffs(info->da_vsel_mask) - 1;143 144 return regval;145}146 147static const struct regulator_ops mt6357_volt_range_ops = {148 .list_voltage = regulator_list_voltage_linear_range,149 .map_voltage = regulator_map_voltage_linear_range,150 .set_voltage_sel = regulator_set_voltage_sel_regmap,151 .get_voltage_sel = mt6357_get_buck_voltage_sel,152 .set_voltage_time_sel = regulator_set_voltage_time_sel,153 .enable = regulator_enable_regmap,154 .disable = regulator_disable_regmap,155 .is_enabled = regulator_is_enabled_regmap,156};157 158static const struct regulator_ops mt6357_volt_table_ops = {159 .list_voltage = regulator_list_voltage_table,160 .map_voltage = regulator_map_voltage_iterate,161 .set_voltage_sel = regulator_set_voltage_sel_regmap,162 .get_voltage_sel = regulator_get_voltage_sel_regmap,163 .set_voltage_time_sel = regulator_set_voltage_time_sel,164 .enable = regulator_enable_regmap,165 .disable = regulator_disable_regmap,166 .is_enabled = regulator_is_enabled_regmap,167};168 169static const struct regulator_ops mt6357_volt_fixed_ops = {170 .list_voltage = regulator_list_voltage_linear,171 .enable = regulator_enable_regmap,172 .disable = regulator_disable_regmap,173 .is_enabled = regulator_is_enabled_regmap,174};175 176static const int vxo22_voltages[] = {177 2200000,178 0,179 2400000,180};181 182static const int vefuse_voltages[] = {183 1200000,184 1300000,185 1500000,186 0,187 1800000,188 0,189 0,190 0,191 0,192 2800000,193 2900000,194 3000000,195 0,196 3300000,197};198 199static const int vcn33_voltages[] = {200 0,201 3300000,202 3400000,203 3500000,204};205 206static const int vcama_voltages[] = {207 0,208 0,209 0,210 0,211 0,212 0,213 0,214 2500000,215 0,216 0,217 2800000,218};219 220static const int vcamd_voltages[] = {221 0,222 0,223 0,224 0,225 1000000,226 1100000,227 1200000,228 1300000,229 0,230 1500000,231 0,232 0,233 1800000,234};235 236static const int vldo28_voltages[] = {237 0,238 2800000,239 0,240 3000000,241};242 243static const int vdram_voltages[] = {244 0,245 1100000,246 1200000,247};248 249static const int vsim_voltages[] = {250 0,251 0,252 0,253 1700000,254 1800000,255 0,256 0,257 0,258 2700000,259 0,260 0,261 3000000,262 3100000,263};264 265static const int vibr_voltages[] = {266 1200000,267 1300000,268 1500000,269 0,270 1800000,271 2000000,272 0,273 0,274 0,275 2800000,276 0,277 3000000,278 0,279 3300000,280};281 282static const int vmc_voltages[] = {283 0,284 0,285 0,286 0,287 1800000,288 0,289 0,290 0,291 0,292 0,293 2900000,294 3000000,295 0,296 3300000,297};298 299static const int vmch_voltages[] = {300 0,301 0,302 2900000,303 3000000,304 0,305 3300000,306};307 308static const int vemc_voltages[] = {309 0,310 0,311 2900000,312 3000000,313 0,314 3300000,315};316 317static const int vusb_voltages[] = {318 0,319 0,320 0,321 3000000,322 3100000,323};324 325static const struct linear_range buck_volt_range1[] = {326 REGULATOR_LINEAR_RANGE(518750, 0, 0x7f, 6250),327};328 329static const struct linear_range buck_volt_range2[] = {330 REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 6250),331};332 333static const struct linear_range buck_volt_range3[] = {334 REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000),335};336 337static const struct linear_range buck_volt_range4[] = {338 REGULATOR_LINEAR_RANGE(1200000, 0, 0x7f, 12500),339};340 341/* The array is indexed by id(MT6357_ID_XXX) */342static struct mt6357_regulator_info mt6357_regulators[] = {343 /* Bucks */344 MT6357_BUCK("buck-vcore", VCORE, 518750, 1312500, 6250,345 buck_volt_range1, MT6357_BUCK_VCORE_ELR0, 0x7f, 0x7f),346 MT6357_BUCK("buck-vproc", VPROC, 518750, 1312500, 6250,347 buck_volt_range1, MT6357_BUCK_VPROC_ELR0, 0x7f, 0x7f),348 MT6357_BUCK("buck-vmodem", VMODEM, 500000, 1293750, 6250,349 buck_volt_range2, MT6357_BUCK_VMODEM_ELR0, 0x7f, 0x7f),350 MT6357_BUCK("buck-vpa", VPA, 500000, 3650000, 50000,351 buck_volt_range3, MT6357_BUCK_VPA_CON1, 0x3f, 0x3f),352 MT6357_BUCK("buck-vs1", VS1, 1200000, 2787500, 12500,353 buck_volt_range4, MT6357_BUCK_VS1_ELR0, 0x7f, 0x7f),354 355 /* LDOs */356 MT6357_LDO("ldo-vcama", VCAMA, vcama_voltages,357 MT6357_LDO_VCAMA_CON0, MT6357_VCAMA_ANA_CON0, 0xf00),358 MT6357_LDO("ldo-vcamd", VCAMD, vcamd_voltages,359 MT6357_LDO_VCAMD_CON0, MT6357_VCAMD_ANA_CON0, 0xf00),360 MT6357_LDO("ldo-vcn33-bt", VCN33_BT, vcn33_voltages,361 MT6357_LDO_VCN33_CON0_0, MT6357_VCN33_ANA_CON0, 0x300),362 MT6357_LDO("ldo-vcn33-wifi", VCN33_WIFI, vcn33_voltages,363 MT6357_LDO_VCN33_CON0_1, MT6357_VCN33_ANA_CON0, 0x300),364 MT6357_LDO("ldo-vdram", VDRAM, vdram_voltages,365 MT6357_LDO_VDRAM_CON0, MT6357_VDRAM_ELR_2, 0x300),366 MT6357_LDO("ldo-vefuse", VEFUSE, vefuse_voltages,367 MT6357_LDO_VEFUSE_CON0, MT6357_VEFUSE_ANA_CON0, 0xf00),368 MT6357_LDO("ldo-vemc", VEMC, vemc_voltages,369 MT6357_LDO_VEMC_CON0, MT6357_VEMC_ANA_CON0, 0x700),370 MT6357_LDO("ldo-vibr", VIBR, vibr_voltages,371 MT6357_LDO_VIBR_CON0, MT6357_VIBR_ANA_CON0, 0xf00),372 MT6357_LDO("ldo-vldo28", VLDO28, vldo28_voltages,373 MT6357_LDO_VLDO28_CON0_0, MT6357_VLDO28_ANA_CON0, 0x300),374 MT6357_LDO("ldo-vmc", VMC, vmc_voltages,375 MT6357_LDO_VMC_CON0, MT6357_VMC_ANA_CON0, 0xf00),376 MT6357_LDO("ldo-vmch", VMCH, vmch_voltages,377 MT6357_LDO_VMCH_CON0, MT6357_VMCH_ANA_CON0, 0x700),378 MT6357_LDO("ldo-vsim1", VSIM1, vsim_voltages,379 MT6357_LDO_VSIM1_CON0, MT6357_VSIM1_ANA_CON0, 0xf00),380 MT6357_LDO("ldo-vsim2", VSIM2, vsim_voltages,381 MT6357_LDO_VSIM2_CON0, MT6357_VSIM2_ANA_CON0, 0xf00),382 MT6357_LDO("ldo-vusb33", VUSB33, vusb_voltages,383 MT6357_LDO_VUSB33_CON0_0, MT6357_VUSB33_ANA_CON0, 0x700),384 MT6357_LDO("ldo-vxo22", VXO22, vxo22_voltages,385 MT6357_LDO_VXO22_CON0, MT6357_VXO22_ANA_CON0, 0x300),386 387 MT6357_LDO1("ldo-vsram-proc", VSRAM_PROC, 518750, 1312500, 6250,388 buck_volt_range1, MT6357_LDO_VSRAM_PROC_CON0,389 MT6357_LDO_VSRAM_CON0, 0x7f00),390 MT6357_LDO1("ldo-vsram-others", VSRAM_OTHERS, 518750, 1312500, 6250,391 buck_volt_range1, MT6357_LDO_VSRAM_OTHERS_CON0,392 MT6357_LDO_VSRAM_CON1, 0x7f00),393 394 MT6357_REG_FIXED("ldo-vaud28", VAUD28, 2800000),395 MT6357_REG_FIXED("ldo-vaux18", VAUX18, 1800000),396 MT6357_REG_FIXED("ldo-vcamio18", VCAMIO, 1800000),397 MT6357_REG_FIXED("ldo-vcn18", VCN18, 1800000),398 MT6357_REG_FIXED("ldo-vcn28", VCN28, 2800000),399 MT6357_REG_FIXED("ldo-vfe28", VFE28, 2800000),400 MT6357_REG_FIXED("ldo-vio18", VIO18, 1800000),401 MT6357_REG_FIXED("ldo-vio28", VIO28, 2800000),402 MT6357_REG_FIXED("ldo-vrf12", VRF12, 1200000),403 MT6357_REG_FIXED("ldo-vrf18", VRF18, 1800000),404};405 406static int mt6357_regulator_probe(struct platform_device *pdev)407{408 struct mt6397_chip *mt6357 = dev_get_drvdata(pdev->dev.parent);409 struct regulator_config config = {};410 struct regulator_dev *rdev;411 int i;412 413 pdev->dev.of_node = pdev->dev.parent->of_node;414 415 for (i = 0; i < MT6357_MAX_REGULATOR; i++) {416 config.dev = &pdev->dev;417 config.driver_data = &mt6357_regulators[i];418 config.regmap = mt6357->regmap;419 420 rdev = devm_regulator_register(&pdev->dev,421 &mt6357_regulators[i].desc,422 &config);423 if (IS_ERR(rdev)) {424 dev_err(&pdev->dev, "failed to register %s\n",425 mt6357_regulators[i].desc.name);426 return PTR_ERR(rdev);427 }428 }429 430 return 0;431}432 433static const struct platform_device_id mt6357_platform_ids[] = {434 { "mt6357-regulator" },435 { /* sentinel */ },436};437MODULE_DEVICE_TABLE(platform, mt6357_platform_ids);438 439static struct platform_driver mt6357_regulator_driver = {440 .driver = {441 .name = "mt6357-regulator",442 .probe_type = PROBE_PREFER_ASYNCHRONOUS,443 },444 .probe = mt6357_regulator_probe,445 .id_table = mt6357_platform_ids,446};447 448module_platform_driver(mt6357_regulator_driver);449 450MODULE_AUTHOR("Chen Zhong <chen.zhong@mediatek.com>");451MODULE_AUTHOR("Fabien Parent <fabien.parent@linaro.org>");452MODULE_AUTHOR("Alexandre Mergnat <amergnat@baylibre.com>");453MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6357 PMIC");454MODULE_LICENSE("GPL");455