// SPDX-License-Identifier: GPL-2.0 // // Copyright (c) 2021 MediaTek Inc. #include #include #include #include #include #include #include #include #include #define SET_OFFSET 0x1 #define CLR_OFFSET 0x2 #define MT6369_REGULATOR_MODE_NORMAL 0 #define MT6369_REGULATOR_MODE_FCCM 1 #define MT6369_REGULATOR_MODE_LP 2 #define MT6369_REGULATOR_MODE_ULP 3 #define DEFAULT_DELAY_MS 10 /* * MT6369 regulator lock register value */ #define MT6369_BUCK_TOP_UNLOCK_VALUE 0x5543 /* * MT6369 regulators' information * * @desc: standard fields of regulator description. * @lp_mode_reg: for operating NORMAL/IDLE mode register. * @lp_mode_mask: MASK for operating lp_mode register. * @modeset_reg: for operating AUTO/PWM mode register. * @modeset_mask: MASK for operating modeset register. * @modeset_reg: Calibrates output voltage register. * @modeset_mask: MASK of Calibrates output voltage register. */ struct mt6369_regulator_info { int irq; int oc_irq_enable_delay_ms; struct delayed_work oc_work; struct regulator_desc desc; u32 lp_mode_reg; u32 lp_mode_mask; u32 modeset_reg; u32 modeset_mask; u32 vocal_reg; u32 vocal_mask; }; #define MT6369_BUCK(_name, min, max, step, volt_ranges, \ _enable_reg, en_bit, _vsel_reg, _vsel_mask, \ _lp_mode_reg, lp_bit, \ _modeset_reg, modeset_bit) \ [MT6369_ID_##_name] = { \ .desc = { \ .name = #_name, \ .of_match = of_match_ptr(#_name), \ .of_parse_cb = mt6369_of_parse_cb, \ .regulators_node = "regulators", \ .ops = &mt6369_buck_ops, \ .type = REGULATOR_VOLTAGE, \ .id = MT6369_ID_##_name, \ .owner = THIS_MODULE, \ .n_voltages = ((max) - (min)) / (step) + 1, \ .linear_ranges = volt_ranges, \ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ .enable_reg = _enable_reg, \ .enable_mask = BIT(en_bit), \ .vsel_reg = _vsel_reg, \ .vsel_mask = _vsel_mask, \ .of_map_mode = mt6369_map_mode, \ }, \ .lp_mode_reg = _lp_mode_reg, \ .lp_mode_mask = BIT(lp_bit), \ .modeset_reg = _modeset_reg, \ .modeset_mask = BIT(modeset_bit), \ } #define MT6369_LDO_LINEAR(_name, min, max, step, volt_ranges, \ _enable_reg, en_bit, _vsel_reg, \ _vsel_mask, _lp_mode_reg, lp_bit) \ [MT6369_ID_##_name] = { \ .desc = { \ .name = #_name, \ .of_match = of_match_ptr(#_name), \ .of_parse_cb = mt6369_of_parse_cb, \ .regulators_node = "regulators", \ .ops = &mt6369_volt_range_ops, \ .type = REGULATOR_VOLTAGE, \ .id = MT6369_ID_##_name, \ .owner = THIS_MODULE, \ .n_voltages = ((max) - (min)) / (step) + 1, \ .linear_ranges = volt_ranges, \ .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ .enable_reg = _enable_reg, \ .enable_mask = BIT(en_bit), \ .vsel_reg = _vsel_reg, \ .vsel_mask = _vsel_mask, \ .of_map_mode = mt6369_map_mode, \ }, \ .lp_mode_reg = _lp_mode_reg, \ .lp_mode_mask = BIT(lp_bit), \ } #define MT6369_LDO(_name, _volt_table, _enable_reg, en_bit, \ _vsel_reg, _vsel_mask, _vocal_reg, \ _vocal_mask, _lp_mode_reg, lp_bit) \ [MT6369_ID_##_name] = { \ .desc = { \ .name = #_name, \ .of_match = of_match_ptr(#_name), \ .of_parse_cb = mt6369_of_parse_cb, \ .regulators_node = "regulators", \ .ops = &mt6369_volt_table_ops, \ .type = REGULATOR_VOLTAGE, \ .id = MT6369_ID_##_name, \ .owner = THIS_MODULE, \ .n_voltages = ARRAY_SIZE(_volt_table), \ .volt_table = _volt_table, \ .enable_reg = _enable_reg, \ .enable_mask = BIT(en_bit), \ .vsel_reg = _vsel_reg, \ .vsel_mask = _vsel_mask, \ .of_map_mode = mt6369_map_mode, \ }, \ .vocal_reg = _vocal_reg, \ .vocal_mask = _vocal_mask, \ .lp_mode_reg = _lp_mode_reg, \ .lp_mode_mask = BIT(lp_bit), \ } #define MT6369_VMCH_EINT(_eint_pol, _volt_table) \ [MT6369_ID_VMCH_##_eint_pol] = { \ .desc = { \ .name = "VMCH_"#_eint_pol, \ .of_match = of_match_ptr("VMCH_"#_eint_pol), \ .of_parse_cb = mt6369_of_parse_cb, \ .regulators_node = "regulators", \ .ops = &mt6369_vmch_eint_ops, \ .type = REGULATOR_VOLTAGE, \ .id = MT6369_ID_VMCH_##_eint_pol, \ .owner = THIS_MODULE, \ .n_voltages = ARRAY_SIZE(_volt_table), \ .volt_table = _volt_table, \ .enable_reg = MT6369_LDO_VMCH_EINT, \ .enable_mask = MT6369_RG_LDO_VMCH_EINT_EN_MASK, \ .vsel_reg = MT6369_RG_VMCH_VOSEL_ADDR, \ .vsel_mask = MT6369_RG_VMCH_VOSEL_MASK, \ .of_map_mode = mt6369_map_mode, \ }, \ .vocal_reg = MT6369_RG_VMCH_VOCAL_ADDR, \ .vocal_mask = MT6369_RG_VMCH_VOCAL_MASK, \ .lp_mode_reg = MT6369_RG_LDO_VMCH_LP_ADDR, \ .lp_mode_mask = BIT(MT6369_RG_LDO_VMCH_LP_SHIFT), \ } static const struct linear_range mt_volt_range0[] = { REGULATOR_LINEAR_RANGE(0, 0, 191, 6250), }; static const struct linear_range mt_volt_range1[] = { REGULATOR_LINEAR_RANGE(500000, 0, 62, 50000), }; static const struct linear_range mt_volt_range2[] = { REGULATOR_LINEAR_RANGE(400000, 0, 127, 6250), }; static const unsigned int ldo_volt_table1[] = { 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000, 3100000, 3200000, 3300000, }; static const unsigned int ldo_volt_table2[] = { 1200000, 1300000, 1500000, 1700000, 1800000, 2000000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000, 3400000, 3500000, }; static const unsigned int ldo_volt_table3[] = { 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, }; static int mt6369_buck_enable(struct regulator_dev *rdev) { return regmap_write(rdev->regmap, rdev->desc->enable_reg + SET_OFFSET, rdev->desc->enable_mask); } static int mt6369_buck_disable(struct regulator_dev *rdev) { return regmap_write(rdev->regmap, rdev->desc->enable_reg + CLR_OFFSET, rdev->desc->enable_mask); } static inline unsigned int mt6369_map_mode(unsigned int mode) { switch (mode) { case MT6369_REGULATOR_MODE_NORMAL: return REGULATOR_MODE_NORMAL; case MT6369_REGULATOR_MODE_FCCM: return REGULATOR_MODE_FAST; case MT6369_REGULATOR_MODE_LP: return REGULATOR_MODE_IDLE; case MT6369_REGULATOR_MODE_ULP: return REGULATOR_MODE_STANDBY; default: return REGULATOR_MODE_INVALID; } } static unsigned int mt6369_regulator_get_mode(struct regulator_dev *rdev) { struct mt6369_regulator_info *info = rdev_get_drvdata(rdev); unsigned int val = 0; int ret; ret = regmap_read(rdev->regmap, info->modeset_reg, &val); if (ret) { dev_err(&rdev->dev, "Failed to get mt6369 mode: %d\n", ret); return ret; } if (val & info->modeset_mask) return REGULATOR_MODE_FAST; ret = regmap_read(rdev->regmap, info->lp_mode_reg, &val); if (ret) { dev_err(&rdev->dev, "Failed to get mt6369 lp mode: %d\n", ret); return ret; } if (val & info->lp_mode_mask) return REGULATOR_MODE_IDLE; else return REGULATOR_MODE_NORMAL; } static int mt6369_buck_unlock(struct regmap *map, bool unlock) { u16 buf = unlock ? MT6369_BUCK_TOP_UNLOCK_VALUE : 0; return regmap_bulk_write(map, MT6369_BUCK_TOP_KEY_PROT_LO, &buf, 2); } static int mt6369_regulator_set_mode(struct regulator_dev *rdev, unsigned int mode) { struct mt6369_regulator_info *info = rdev_get_drvdata(rdev); int ret = 0; int curr_mode; curr_mode = mt6369_regulator_get_mode(rdev); switch (mode) { case REGULATOR_MODE_FAST: ret = mt6369_buck_unlock(rdev->regmap, true); if (ret) return ret; ret = regmap_update_bits(rdev->regmap, info->modeset_reg, info->modeset_mask, info->modeset_mask); ret |= mt6369_buck_unlock(rdev->regmap, false); break; case REGULATOR_MODE_NORMAL: if (curr_mode == REGULATOR_MODE_FAST) { ret = mt6369_buck_unlock(rdev->regmap, true); if (ret) return ret; ret = regmap_update_bits(rdev->regmap, info->modeset_reg, info->modeset_mask, 0); ret |= mt6369_buck_unlock(rdev->regmap, false); } else if (curr_mode == REGULATOR_MODE_IDLE) { ret = regmap_update_bits(rdev->regmap, info->lp_mode_reg, info->lp_mode_mask, 0); udelay(100); } break; case REGULATOR_MODE_IDLE: ret = regmap_update_bits(rdev->regmap, info->lp_mode_reg, info->lp_mode_mask, info->lp_mode_mask); break; default: return -EINVAL; } if (ret) { dev_err(&rdev->dev, "Failed to set mt6369 mode(%d): %d\n", mode, ret); } return ret; } static int mt6369_vmch_eint_enable(struct regulator_dev *rdev) { unsigned int val; int ret; if (rdev->desc->id == MT6369_ID_VMCH_EINT_HIGH) val = MT6369_RG_LDO_VMCH_EINT_POL_MASK; else val = 0; ret = regmap_update_bits(rdev->regmap, MT6369_LDO_VMCH_EINT, MT6369_RG_LDO_VMCH_EINT_POL_MASK, val); if (ret) return ret; ret = regmap_update_bits(rdev->regmap, MT6369_RG_LDO_VMCH_EN_ADDR, BIT(MT6369_RG_LDO_VMCH_EN_SHIFT), BIT(MT6369_RG_LDO_VMCH_EN_SHIFT)); if (ret) return ret; ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, rdev->desc->enable_mask, rdev->desc->enable_mask); return ret; } static int mt6369_vmch_eint_disable(struct regulator_dev *rdev) { int ret; ret = regmap_update_bits(rdev->regmap, MT6369_RG_LDO_VMCH_EN_ADDR, BIT(MT6369_RG_LDO_VMCH_EN_SHIFT), 0); if (ret) return ret; udelay(1500); /* Must delay for VMCH discharging */ ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg, rdev->desc->enable_mask, 0); return ret; } static const struct regulator_ops mt6369_buck_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 = mt6369_buck_enable, .disable = mt6369_buck_disable, .is_enabled = regulator_is_enabled_regmap, .set_mode = mt6369_regulator_set_mode, .get_mode = mt6369_regulator_get_mode, }; static const struct regulator_ops mt6369_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 = mt6369_regulator_set_mode, .get_mode = mt6369_regulator_get_mode, }; static const struct regulator_ops mt6369_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 = mt6369_regulator_set_mode, .get_mode = mt6369_regulator_get_mode, }; static const struct regulator_ops mt6369_vmch_eint_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 = mt6369_vmch_eint_enable, .disable = mt6369_vmch_eint_disable, .is_enabled = regulator_is_enabled_regmap, .set_mode = mt6369_regulator_set_mode, .get_mode = mt6369_regulator_get_mode, }; static int mt6369_of_parse_cb(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *config); /* The array is indexed by id(MT6369_ID_XXX) */ static struct mt6369_regulator_info mt6369_regulators[] = { MT6369_BUCK(VBUCK1, 0, 1193750, 6250, mt_volt_range0, MT6369_RG_BUCK_VBUCK1_EN_ADDR, MT6369_RG_BUCK_VBUCK1_EN_SHIFT, MT6369_RG_BUCK_VBUCK1_VOSEL_ADDR, MT6369_RG_BUCK_VBUCK1_VOSEL_MASK, MT6369_RG_BUCK_VBUCK1_LP_ADDR, MT6369_RG_BUCK_VBUCK1_LP_SHIFT, MT6369_RG_VBUCK1_FCCM_ADDR, MT6369_RG_VBUCK1_FCCM_SHIFT), MT6369_BUCK(VPA, 500000, 3600000, 50000, mt_volt_range1, MT6369_RG_BUCK_VPA_EN_ADDR, MT6369_RG_BUCK_VPA_EN_SHIFT, MT6369_RG_BUCK_VPA_VOSEL_ADDR, MT6369_RG_BUCK_VPA_VOSEL_MASK, MT6369_RG_BUCK_VPA_LP_ADDR, MT6369_RG_BUCK_VPA_LP_SHIFT, MT6369_RG_VPA_MODESET_ADDR, MT6369_RG_VPA_MODESET_SHIFT), MT6369_LDO_LINEAR(VSRAM_CORE, 400000, 1193750, 6250, mt_volt_range2, MT6369_RG_LDO_VSRAM_CORE_EN_ADDR, MT6369_RG_LDO_VSRAM_CORE_EN_SHIFT, MT6369_RG_LDO_VSRAM_CORE_VOSEL_ADDR, MT6369_RG_LDO_VSRAM_CORE_VOSEL_MASK, MT6369_RG_LDO_VSRAM_CORE_LP_ADDR, MT6369_RG_LDO_VSRAM_CORE_LP_SHIFT), MT6369_LDO_LINEAR(VDIGRF, 400000, 1193750, 6250, mt_volt_range2, MT6369_RG_LDO_VDIGRF_EN_ADDR, MT6369_RG_LDO_VDIGRF_EN_SHIFT, MT6369_RG_LDO_VDIGRF_VOSEL_ADDR, MT6369_RG_LDO_VDIGRF_VOSEL_MASK, MT6369_RG_LDO_VDIGRF_LP_ADDR, MT6369_RG_LDO_VDIGRF_LP_SHIFT), MT6369_LDO(VAUX18, ldo_volt_table1, MT6369_RG_LDO_VAUX18_EN_ADDR, MT6369_RG_LDO_VAUX18_EN_SHIFT, MT6369_RG_VAUX18_VOSEL_ADDR, MT6369_RG_VAUX18_VOSEL_MASK, MT6369_RG_VAUX18_VOCAL_ADDR, MT6369_RG_VAUX18_VOCAL_MASK, MT6369_RG_LDO_VAUX18_LP_ADDR, MT6369_RG_LDO_VAUX18_LP_SHIFT), MT6369_LDO(VUSB, ldo_volt_table2, MT6369_RG_LDO_VUSB_EN_ADDR, MT6369_RG_LDO_VUSB_EN_SHIFT, MT6369_RG_VUSB_VOSEL_ADDR, MT6369_RG_VUSB_VOSEL_MASK, MT6369_RG_VUSB_VOCAL_ADDR, MT6369_RG_VUSB_VOCAL_MASK, MT6369_RG_LDO_VUSB_LP_ADDR, MT6369_RG_LDO_VUSB_LP_SHIFT), MT6369_LDO(VIBR, ldo_volt_table2, MT6369_RG_LDO_VIBR_EN_ADDR, MT6369_RG_LDO_VIBR_EN_SHIFT, MT6369_RG_VIBR_VOSEL_ADDR, MT6369_RG_VIBR_VOSEL_MASK, MT6369_RG_VIBR_VOCAL_ADDR, MT6369_RG_VIBR_VOCAL_MASK, MT6369_RG_LDO_VIBR_LP_ADDR, MT6369_RG_LDO_VIBR_LP_SHIFT), MT6369_LDO(VIO28, ldo_volt_table2, MT6369_RG_LDO_VIO28_EN_ADDR, MT6369_RG_LDO_VIO28_EN_SHIFT, MT6369_RG_VIO28_VOSEL_ADDR, MT6369_RG_VIO28_VOSEL_MASK, MT6369_RG_VIO28_VOCAL_ADDR, MT6369_RG_VIO28_VOCAL_MASK, MT6369_RG_LDO_VIO28_LP_ADDR, MT6369_RG_LDO_VIO28_LP_SHIFT), MT6369_LDO(VFP, ldo_volt_table2, MT6369_RG_LDO_VFP_EN_ADDR, MT6369_RG_LDO_VFP_EN_SHIFT, MT6369_RG_VFP_VOSEL_ADDR, MT6369_RG_VFP_VOSEL_MASK, MT6369_RG_VFP_VOCAL_ADDR, MT6369_RG_VFP_VOCAL_MASK, MT6369_RG_LDO_VFP_LP_ADDR, MT6369_RG_LDO_VFP_LP_SHIFT), MT6369_LDO(VTP, ldo_volt_table2, MT6369_RG_LDO_VTP_EN_ADDR, MT6369_RG_LDO_VTP_EN_SHIFT, MT6369_RG_VTP_VOSEL_ADDR, MT6369_RG_VTP_VOSEL_MASK, MT6369_RG_VTP_VOCAL_ADDR, MT6369_RG_VTP_VOCAL_MASK, MT6369_RG_LDO_VTP_LP_ADDR, MT6369_RG_LDO_VTP_LP_SHIFT), MT6369_LDO(VMCH, ldo_volt_table2, MT6369_RG_LDO_VMCH_EN_ADDR, MT6369_RG_LDO_VMCH_EN_SHIFT, MT6369_RG_VMCH_VOSEL_ADDR, MT6369_RG_VMCH_VOSEL_MASK, MT6369_RG_VMCH_VOCAL_ADDR, MT6369_RG_VMCH_VOCAL_MASK, MT6369_RG_LDO_VMCH_LP_ADDR, MT6369_RG_LDO_VMCH_LP_SHIFT), MT6369_LDO(VMC, ldo_volt_table2, MT6369_RG_LDO_VMC_EN_ADDR, MT6369_RG_LDO_VMC_EN_SHIFT, MT6369_RG_VMC_VOSEL_ADDR, MT6369_RG_VMC_VOSEL_MASK, MT6369_RG_VMC_VOCAL_ADDR, MT6369_RG_VMC_VOCAL_MASK, MT6369_RG_LDO_VMC_LP_ADDR, MT6369_RG_LDO_VMC_LP_SHIFT), MT6369_LDO(VCN33_1, ldo_volt_table2, MT6369_RG_LDO_VCN33_1_EN_ADDR, MT6369_RG_LDO_VCN33_1_EN_SHIFT, MT6369_RG_VCN33_1_VOSEL_ADDR, MT6369_RG_VCN33_1_VOSEL_MASK, MT6369_RG_VCN33_1_VOCAL_ADDR, MT6369_RG_VCN33_1_VOCAL_MASK, MT6369_RG_LDO_VCN33_1_LP_ADDR, MT6369_RG_LDO_VCN33_1_LP_SHIFT), MT6369_LDO(VCN33_2, ldo_volt_table2, MT6369_RG_LDO_VCN33_2_EN_ADDR, MT6369_RG_LDO_VCN33_2_EN_SHIFT, MT6369_RG_VCN33_2_VOSEL_ADDR, MT6369_RG_VCN33_2_VOSEL_MASK, MT6369_RG_VCN33_2_VOCAL_ADDR, MT6369_RG_VCN33_2_VOCAL_MASK, MT6369_RG_LDO_VCN33_2_LP_ADDR, MT6369_RG_LDO_VCN33_2_LP_SHIFT), MT6369_LDO(VAUD28, ldo_volt_table1, MT6369_RG_LDO_VAUD28_EN_ADDR, MT6369_RG_LDO_VAUD28_EN_SHIFT, MT6369_RG_VAUD28_VOSEL_ADDR, MT6369_RG_VAUD28_VOSEL_MASK, MT6369_RG_VAUD28_VOCAL_ADDR, MT6369_RG_VAUD28_VOCAL_MASK, MT6369_RG_LDO_VAUD28_LP_ADDR, MT6369_RG_LDO_VAUD28_LP_SHIFT), MT6369_LDO(VANT18, ldo_volt_table3, MT6369_RG_LDO_VANT18_EN_ADDR, MT6369_RG_LDO_VANT18_EN_SHIFT, MT6369_RG_VANT18_VOSEL_ADDR, MT6369_RG_VANT18_VOSEL_MASK, MT6369_RG_VANT18_VOCAL_ADDR, MT6369_RG_VANT18_VOCAL_MASK, MT6369_RG_LDO_VANT18_LP_ADDR, MT6369_RG_LDO_VANT18_LP_SHIFT), MT6369_LDO(VEFUSE, ldo_volt_table2, MT6369_RG_LDO_VEFUSE_EN_ADDR, MT6369_RG_LDO_VEFUSE_EN_SHIFT, MT6369_RG_VEFUSE_VOSEL_ADDR, MT6369_RG_VEFUSE_VOSEL_MASK, MT6369_RG_VEFUSE_VOCAL_ADDR, MT6369_RG_VEFUSE_VOCAL_MASK, MT6369_RG_LDO_VEFUSE_LP_ADDR, MT6369_RG_LDO_VEFUSE_LP_SHIFT), MT6369_VMCH_EINT(EINT_HIGH, ldo_volt_table2), MT6369_VMCH_EINT(EINT_LOW, ldo_volt_table2), }; static void mt6369_oc_irq_enable_work(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); struct mt6369_regulator_info *info = container_of(dwork, struct mt6369_regulator_info, oc_work); enable_irq(info->irq); } static irqreturn_t mt6369_oc_irq(int irq, void *data) { struct regulator_dev *rdev = (struct regulator_dev *)data; struct mt6369_regulator_info *info = rdev_get_drvdata(rdev); disable_irq_nosync(info->irq); if (!regulator_is_enabled_regmap(rdev)) goto delayed_enable; regulator_notifier_call_chain(rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); delayed_enable: schedule_delayed_work(&info->oc_work, msecs_to_jiffies(info->oc_irq_enable_delay_ms)); return IRQ_HANDLED; } static int mt6369_of_parse_cb(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *config) { int ret; struct mt6369_regulator_info *info = config->driver_data; if (info->irq > 0) { ret = of_property_read_u32(np, "mediatek,oc-irq-enable-delay-ms", &info->oc_irq_enable_delay_ms); if (ret || !info->oc_irq_enable_delay_ms) info->oc_irq_enable_delay_ms = DEFAULT_DELAY_MS; } return 0; } static int mt6369_regulator_probe(struct platform_device *pdev) { struct regulator_config config = {}; struct regulator_dev *rdev; struct mt6369_regulator_info *info; int i, ret; config.dev = pdev->dev.parent; config.regmap = dev_get_regmap(pdev->dev.parent, NULL); for (i = 0; i < MT6369_MAX_REGULATOR; i++) { info = &mt6369_regulators[i]; info->irq = platform_get_irq_byname_optional(pdev, info->desc.name); info->oc_irq_enable_delay_ms = DEFAULT_DELAY_MS; config.driver_data = info; rdev = devm_regulator_register(&pdev->dev, &info->desc, &config); if (IS_ERR(rdev)) { ret = PTR_ERR(rdev); dev_err(&pdev->dev, "failed to register %s, ret=%d\n", info->desc.name, ret); continue; } if (info->irq <= 0) continue; INIT_DELAYED_WORK(&info->oc_work, mt6369_oc_irq_enable_work); ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, mt6369_oc_irq, IRQF_TRIGGER_HIGH, info->desc.name, rdev); if (ret) { dev_err(&pdev->dev, "Failed to request IRQ:%s, ret=%d", info->desc.name, ret); continue; } } return 0; } static void mt6369_regulator_shutdown(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct regmap *regmap; int ret = 0; regmap = dev_get_regmap(dev->parent, NULL); if (!regmap) { dev_notice(&pdev->dev, "invalid regmap.\n"); return; } ret = regmap_write(regmap, MT6369_TOP_CFG_ELR5, 0x1); if (ret < 0) { dev_notice(&pdev->dev, "enable sequence off failed.\n"); return; } } static const struct platform_device_id mt6369_regulator_ids[] = { { "mt6369-regulator", 0}, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(platform, mt6369_regulator_ids); static struct platform_driver mt6369_regulator_driver = { .driver = { .name = "mt6369-regulator", }, .probe = mt6369_regulator_probe, .shutdown = mt6369_regulator_shutdown, .id_table = mt6369_regulator_ids, }; module_platform_driver(mt6369_regulator_driver); MODULE_AUTHOR("Jeter Chen "); MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6369 PMIC"); MODULE_LICENSE("GPL v2");