| // SPDX-License-Identifier: GPL-2.0 |
| // |
| // Copyright (c) 2017 MediaTek Inc. |
| // Author: Chenglin Xu <chenglin.xu@mediatek.com> |
| |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/platform_device.h> |
| #include <linux/regmap.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/mt6380-regulator.h> |
| #include <linux/regulator/of_regulator.h> |
| |
| /* PMIC Registers */ |
| #define MT6380_ALDO_CON_0 0x0000 |
| #define MT6380_BTLDO_CON_0 0x0004 |
| #define MT6380_COMP_CON_0 0x0008 |
| #define MT6380_CPUBUCK_CON_0 0x000C |
| #define MT6380_CPUBUCK_CON_1 0x0010 |
| #define MT6380_CPUBUCK_CON_2 0x0014 |
| #define MT6380_DDRLDO_CON_0 0x0018 |
| #define MT6380_MLDO_CON_0 0x001C |
| #define MT6380_PALDO_CON_0 0x0020 |
| #define MT6380_PHYLDO_CON_0 0x0024 |
| #define MT6380_SIDO_CON_0 0x0028 |
| #define MT6380_SIDO_CON_1 0x002C |
| #define MT6380_SIDO_CON_2 0x0030 |
| #define MT6380_SLDO_CON_0 0x0034 |
| #define MT6380_TLDO_CON_0 0x0038 |
| #define MT6380_STARTUP_CON_0 0x003C |
| #define MT6380_STARTUP_CON_1 0x0040 |
| #define MT6380_SMPS_TOP_CON_0 0x0044 |
| #define MT6380_SMPS_TOP_CON_1 0x0048 |
| #define MT6380_ANA_CTRL_0 0x0050 |
| #define MT6380_ANA_CTRL_1 0x0054 |
| #define MT6380_ANA_CTRL_2 0x0058 |
| #define MT6380_ANA_CTRL_3 0x005C |
| #define MT6380_ANA_CTRL_4 0x0060 |
| #define MT6380_SPK_CON9 0x0064 |
| #define MT6380_SPK_CON11 0x0068 |
| #define MT6380_SPK_CON12 0x006A |
| #define MT6380_CLK_CTRL 0x0070 |
| #define MT6380_PINMUX_CTRL 0x0074 |
| #define MT6380_IO_CTRL 0x0078 |
| #define MT6380_SLP_MODE_CTRL_0 0x007C |
| #define MT6380_SLP_MODE_CTRL_1 0x0080 |
| #define MT6380_SLP_MODE_CTRL_2 0x0084 |
| #define MT6380_SLP_MODE_CTRL_3 0x0088 |
| #define MT6380_SLP_MODE_CTRL_4 0x008C |
| #define MT6380_SLP_MODE_CTRL_5 0x0090 |
| #define MT6380_SLP_MODE_CTRL_6 0x0094 |
| #define MT6380_SLP_MODE_CTRL_7 0x0098 |
| #define MT6380_SLP_MODE_CTRL_8 0x009C |
| #define MT6380_FCAL_CTRL_0 0x00A0 |
| #define MT6380_FCAL_CTRL_1 0x00A4 |
| #define MT6380_LDO_CTRL_0 0x00A8 |
| #define MT6380_LDO_CTRL_1 0x00AC |
| #define MT6380_LDO_CTRL_2 0x00B0 |
| #define MT6380_LDO_CTRL_3 0x00B4 |
| #define MT6380_LDO_CTRL_4 0x00B8 |
| #define MT6380_DEBUG_CTRL_0 0x00BC |
| #define MT6380_EFU_CTRL_0 0x0200 |
| #define MT6380_EFU_CTRL_1 0x0201 |
| #define MT6380_EFU_CTRL_2 0x0202 |
| #define MT6380_EFU_CTRL_3 0x0203 |
| #define MT6380_EFU_CTRL_4 0x0204 |
| #define MT6380_EFU_CTRL_5 0x0205 |
| #define MT6380_EFU_CTRL_6 0x0206 |
| #define MT6380_EFU_CTRL_7 0x0207 |
| #define MT6380_EFU_CTRL_8 0x0208 |
| |
| #define MT6380_REGULATOR_MODE_AUTO 0 |
| #define MT6380_REGULATOR_MODE_FORCE_PWM 1 |
| |
| /* |
| * mt6380 regulators' information |
| * |
| * @desc: standard fields of regulator description |
| * @vselon_reg: Register sections for hardware control mode of bucks |
| * @modeset_reg: Register for controlling the buck/LDO control mode |
| * @modeset_mask: Mask for controlling the buck/LDO control mode |
| */ |
| struct mt6380_regulator_info { |
| struct regulator_desc desc; |
| u32 vselon_reg; |
| u32 modeset_reg; |
| u32 modeset_mask; |
| }; |
| |
| #define MT6380_BUCK(match, vreg, min, max, step, volt_ranges, enreg, \ |
| vosel, vosel_mask, enbit, voselon, _modeset_reg, \ |
| _modeset_mask) \ |
| [MT6380_ID_##vreg] = { \ |
| .desc = { \ |
| .name = #vreg, \ |
| .of_match = of_match_ptr(match), \ |
| .ops = &mt6380_volt_range_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = MT6380_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(enbit), \ |
| }, \ |
| .vselon_reg = voselon, \ |
| .modeset_reg = _modeset_reg, \ |
| .modeset_mask = _modeset_mask, \ |
| } |
| |
| #define MT6380_LDO(match, vreg, ldo_volt_table, enreg, enbit, vosel, \ |
| vosel_mask, _modeset_reg, _modeset_mask) \ |
| [MT6380_ID_##vreg] = { \ |
| .desc = { \ |
| .name = #vreg, \ |
| .of_match = of_match_ptr(match), \ |
| .ops = &mt6380_volt_table_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = MT6380_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(enbit), \ |
| }, \ |
| .modeset_reg = _modeset_reg, \ |
| .modeset_mask = _modeset_mask, \ |
| } |
| |
| #define MT6380_REG_FIXED(match, vreg, enreg, enbit, volt, \ |
| _modeset_reg, _modeset_mask) \ |
| [MT6380_ID_##vreg] = { \ |
| .desc = { \ |
| .name = #vreg, \ |
| .of_match = of_match_ptr(match), \ |
| .ops = &mt6380_volt_fixed_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = MT6380_ID_##vreg, \ |
| .owner = THIS_MODULE, \ |
| .n_voltages = 1, \ |
| .enable_reg = enreg, \ |
| .enable_mask = BIT(enbit), \ |
| .min_uV = volt, \ |
| }, \ |
| .modeset_reg = _modeset_reg, \ |
| .modeset_mask = _modeset_mask, \ |
| } |
| |
| static const struct linear_range buck_volt_range1[] = { |
| REGULATOR_LINEAR_RANGE(600000, 0, 0xfe, 6250), |
| }; |
| |
| static const struct linear_range buck_volt_range2[] = { |
| REGULATOR_LINEAR_RANGE(600000, 0, 0xfe, 6250), |
| }; |
| |
| static const struct linear_range buck_volt_range3[] = { |
| REGULATOR_LINEAR_RANGE(1200000, 0, 0x3c, 25000), |
| }; |
| |
| static const unsigned int ldo_volt_table1[] = { |
| 1400000, 1350000, 1300000, 1250000, 1200000, 1150000, 1100000, 1050000, |
| }; |
| |
| static const unsigned int ldo_volt_table2[] = { |
| 2200000, 3300000, |
| }; |
| |
| static const unsigned int ldo_volt_table3[] = { |
| 1240000, 1390000, 1540000, 1840000, |
| }; |
| |
| static const unsigned int ldo_volt_table4[] = { |
| 2200000, 3300000, |
| }; |
| |
| static int mt6380_regulator_set_mode(struct regulator_dev *rdev, |
| unsigned int mode) |
| { |
| int val = 0; |
| struct mt6380_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| switch (mode) { |
| case REGULATOR_MODE_NORMAL: |
| val = MT6380_REGULATOR_MODE_AUTO; |
| break; |
| case REGULATOR_MODE_FAST: |
| val = MT6380_REGULATOR_MODE_FORCE_PWM; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| val <<= ffs(info->modeset_mask) - 1; |
| |
| return regmap_update_bits(rdev->regmap, info->modeset_reg, |
| info->modeset_mask, val); |
| } |
| |
| static unsigned int mt6380_regulator_get_mode(struct regulator_dev *rdev) |
| { |
| unsigned int val; |
| unsigned int mode; |
| int ret; |
| struct mt6380_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| ret = regmap_read(rdev->regmap, info->modeset_reg, &val); |
| if (ret < 0) |
| return ret; |
| |
| val &= info->modeset_mask; |
| val >>= ffs(info->modeset_mask) - 1; |
| |
| switch (val) { |
| case MT6380_REGULATOR_MODE_AUTO: |
| mode = REGULATOR_MODE_NORMAL; |
| break; |
| case MT6380_REGULATOR_MODE_FORCE_PWM: |
| mode = REGULATOR_MODE_FAST; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return mode; |
| } |
| |
| static const struct regulator_ops mt6380_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 = 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, |
| .set_mode = mt6380_regulator_set_mode, |
| .get_mode = mt6380_regulator_get_mode, |
| }; |
| |
| static const struct regulator_ops mt6380_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, |
| .set_mode = mt6380_regulator_set_mode, |
| .get_mode = mt6380_regulator_get_mode, |
| }; |
| |
| static const struct regulator_ops mt6380_volt_fixed_ops = { |
| .list_voltage = regulator_list_voltage_linear, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .is_enabled = regulator_is_enabled_regmap, |
| .set_mode = mt6380_regulator_set_mode, |
| .get_mode = mt6380_regulator_get_mode, |
| }; |
| |
| /* The array is indexed by id(MT6380_ID_XXX) */ |
| static struct mt6380_regulator_info mt6380_regulators[] = { |
| MT6380_BUCK("buck-vcore1", VCPU, 600000, 1393750, 6250, |
| buck_volt_range1, MT6380_ANA_CTRL_3, MT6380_ANA_CTRL_1, |
| 0xfe, 3, MT6380_ANA_CTRL_1, |
| MT6380_CPUBUCK_CON_0, 0x8000000), |
| MT6380_BUCK("buck-vcore", VCORE, 600000, 1393750, 6250, |
| buck_volt_range2, MT6380_ANA_CTRL_3, MT6380_ANA_CTRL_2, |
| 0xfe, 2, MT6380_ANA_CTRL_2, MT6380_SIDO_CON_0, 0x1000000), |
| MT6380_BUCK("buck-vrf", VRF, 1200000, 1575000, 25000, |
| buck_volt_range3, MT6380_ANA_CTRL_3, MT6380_SIDO_CON_0, |
| 0x78, 1, MT6380_SIDO_CON_0, MT6380_SIDO_CON_0, 0x8000), |
| MT6380_LDO("ldo-vm", VMLDO, ldo_volt_table1, MT6380_LDO_CTRL_0, |
| 1, MT6380_MLDO_CON_0, 0xE000, MT6380_ANA_CTRL_1, 0x4000000), |
| MT6380_LDO("ldo-va", VALDO, ldo_volt_table2, MT6380_LDO_CTRL_0, |
| 2, MT6380_ALDO_CON_0, 0x400, MT6380_ALDO_CON_0, 0x20), |
| MT6380_REG_FIXED("ldo-vphy", VPHYLDO, MT6380_LDO_CTRL_0, 7, 1800000, |
| MT6380_PHYLDO_CON_0, 0x80), |
| MT6380_LDO("ldo-vddr", VDDRLDO, ldo_volt_table3, MT6380_LDO_CTRL_0, |
| 8, MT6380_DDRLDO_CON_0, 0x3000, MT6380_DDRLDO_CON_0, 0x80), |
| MT6380_LDO("ldo-vt", VTLDO, ldo_volt_table4, MT6380_LDO_CTRL_0, 3, |
| MT6380_TLDO_CON_0, 0x400, MT6380_TLDO_CON_0, 0x20), |
| }; |
| |
| static int mt6380_regulator_probe(struct platform_device *pdev) |
| { |
| struct regmap *regmap = dev_get_regmap(pdev->dev.parent, NULL); |
| struct regulator_config config = {}; |
| struct regulator_dev *rdev; |
| int i; |
| |
| for (i = 0; i < MT6380_MAX_REGULATOR; i++) { |
| config.dev = &pdev->dev; |
| config.driver_data = &mt6380_regulators[i]; |
| config.regmap = regmap; |
| rdev = devm_regulator_register(&pdev->dev, |
| &mt6380_regulators[i].desc, |
| &config); |
| if (IS_ERR(rdev)) { |
| dev_err(&pdev->dev, "failed to register %s\n", |
| mt6380_regulators[i].desc.name); |
| return PTR_ERR(rdev); |
| } |
| } |
| return 0; |
| } |
| |
| static const struct platform_device_id mt6380_platform_ids[] = { |
| {"mt6380-regulator", 0}, |
| { /* sentinel */ }, |
| }; |
| MODULE_DEVICE_TABLE(platform, mt6380_platform_ids); |
| |
| static const struct of_device_id __maybe_unused mt6380_of_match[] = { |
| { .compatible = "mediatek,mt6380-regulator", }, |
| { /* sentinel */ }, |
| }; |
| MODULE_DEVICE_TABLE(of, mt6380_of_match); |
| |
| static struct platform_driver mt6380_regulator_driver = { |
| .driver = { |
| .name = "mt6380-regulator", |
| .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
| .of_match_table = of_match_ptr(mt6380_of_match), |
| }, |
| .probe = mt6380_regulator_probe, |
| .id_table = mt6380_platform_ids, |
| }; |
| |
| module_platform_driver(mt6380_regulator_driver); |
| |
| MODULE_AUTHOR("Chenglin Xu <chenglin.xu@mediatek.com>"); |
| MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6380 PMIC"); |
| MODULE_LICENSE("GPL v2"); |
