// 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 = 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");