| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| ChiYuan Huang | 1685 | 100.00% | 3 | 100.00% |
| Total | 1685 | 3 |
// SPDX-License-Identifier: GPL-2.0+ #include <linux/bits.h> #include <linux/gpio/consumer.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/mod_devicetable.h> #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> enum { MT6370_IDX_DSVBOOST = 0, MT6370_IDX_DSVPOS, MT6370_IDX_DSVNEG, MT6370_IDX_VIBLDO, MT6370_MAX_IDX }; #define MT6370_REG_LDO_CFG 0x180 #define MT6370_REG_LDO_VOUT 0x181 #define MT6370_REG_DB_CTRL1 0x1B0 #define MT6370_REG_DB_CTRL2 0x1B1 #define MT6370_REG_DB_VBST 0x1B2 #define MT6370_REG_DB_VPOS 0x1B3 #define MT6370_REG_DB_VNEG 0x1B4 #define MT6370_REG_LDO_STAT 0x1DC #define MT6370_REG_DB_STAT 0x1DF #define MT6370_LDOOMS_MASK BIT(7) #define MT6370_LDOEN_MASK BIT(7) #define MT6370_LDOVOUT_MASK GENMASK(3, 0) #define MT6370_DBPERD_MASK (BIT(7) | BIT(4)) #define MT6370_DBEXTEN_MASK BIT(0) #define MT6370_DBVPOSEN_MASK BIT(6) #define MT6370_DBVPOSDISG_MASK BIT(5) #define MT6370_DBVNEGEN_MASK BIT(3) #define MT6370_DBVNEGDISG_MASK BIT(2) #define MT6370_DBALLON_MASK (MT6370_DBVPOSEN_MASK | MT6370_DBVNEGEN_MASK) #define MT6370_DBSLEW_MASK GENMASK(7, 6) #define MT6370_DBVOUT_MASK GENMASK(5, 0) #define MT6370_LDOOC_EVT_MASK BIT(7) #define MT6370_POSSCP_EVT_MASK BIT(7) #define MT6370_NEGSCP_EVT_MASK BIT(6) #define MT6370_BSTOCP_EVT_MASK BIT(5) #define MT6370_POSOCP_EVT_MASK BIT(4) #define MT6370_NEGOCP_EVT_MASK BIT(3) #define MT6370_LDO_MINUV 1600000 #define MT6370_LDO_STPUV 200000 #define MT6370_LDO_N_VOLT 13 #define MT6370_DBVBOOST_MINUV 4000000 #define MT6370_DBVBOOST_STPUV 50000 #define MT6370_DBVBOOST_N_VOLT 45 #define MT6370_DBVOUT_MINUV 4000000 #define MT6370_DBVOUT_STPUV 50000 #define MT6370_DBVOUT_N_VOLT 41 struct mt6370_priv { struct device *dev; struct regmap *regmap; struct regulator_dev *rdev[MT6370_MAX_IDX]; bool use_external_ctrl; }; static const unsigned int mt6370_vpos_ramp_tbl[] = { 8540, 5840, 4830, 3000 }; static const unsigned int mt6370_vneg_ramp_tbl[] = { 10090, 6310, 5050, 3150 }; static int mt6370_get_error_flags(struct regulator_dev *rdev, unsigned int *flags) { struct regmap *regmap = rdev_get_regmap(rdev); unsigned int stat_reg, stat, rpt_flags = 0; int rid = rdev_get_id(rdev), ret; if (rid == MT6370_IDX_VIBLDO) stat_reg = MT6370_REG_LDO_STAT; else stat_reg = MT6370_REG_DB_STAT; ret = regmap_read(regmap, stat_reg, &stat); if (ret) return ret; switch (rid) { case MT6370_IDX_DSVBOOST: if (stat & MT6370_BSTOCP_EVT_MASK) rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; break; case MT6370_IDX_DSVPOS: if (stat & MT6370_POSSCP_EVT_MASK) rpt_flags |= REGULATOR_ERROR_UNDER_VOLTAGE; if (stat & MT6370_POSOCP_EVT_MASK) rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; break; case MT6370_IDX_DSVNEG: if (stat & MT6370_NEGSCP_EVT_MASK) rpt_flags |= REGULATOR_ERROR_UNDER_VOLTAGE; if (stat & MT6370_NEGOCP_EVT_MASK) rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; break; default: if (stat & MT6370_LDOOC_EVT_MASK) rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; break; } *flags = rpt_flags; return 0; } static const struct regulator_ops mt6370_dbvboost_ops = { .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear, .get_bypass = regulator_get_bypass_regmap, .set_bypass = regulator_set_bypass_regmap, .get_error_flags = mt6370_get_error_flags, }; static const struct regulator_ops mt6370_dbvout_ops = { .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .set_active_discharge = regulator_set_active_discharge_regmap, .set_ramp_delay = regulator_set_ramp_delay_regmap, .get_error_flags = mt6370_get_error_flags, }; static const struct regulator_ops mt6370_ldo_ops = { .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear, .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .set_active_discharge = regulator_set_active_discharge_regmap, .get_error_flags = mt6370_get_error_flags, }; static int mt6370_of_parse_cb(struct device_node *np, const struct regulator_desc *desc, struct regulator_config *config) { struct mt6370_priv *priv = config->driver_data; struct gpio_desc *enable_gpio; int ret; enable_gpio = fwnode_gpiod_get_index(of_fwnode_handle(np), "enable", 0, GPIOD_OUT_HIGH | GPIOD_FLAGS_BIT_NONEXCLUSIVE, desc->name); if (IS_ERR(enable_gpio)) { config->ena_gpiod = NULL; return 0; } /* * RG control by default * Only if all are using external pin, change all by external control */ if (priv->use_external_ctrl) { ret = regmap_update_bits(priv->regmap, MT6370_REG_DB_CTRL1, MT6370_DBEXTEN_MASK, MT6370_DBEXTEN_MASK); if (ret) return ret; } config->ena_gpiod = enable_gpio; priv->use_external_ctrl = true; return 0; } static const struct regulator_desc mt6370_regulator_descs[] = { { .name = "mt6370-dsv-vbst", .of_match = of_match_ptr("dsvbst"), .regulators_node = of_match_ptr("regulators"), .id = MT6370_IDX_DSVBOOST, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .ops = &mt6370_dbvboost_ops, .min_uV = MT6370_DBVBOOST_MINUV, .uV_step = MT6370_DBVBOOST_STPUV, .n_voltages = MT6370_DBVBOOST_N_VOLT, .vsel_reg = MT6370_REG_DB_VBST, .vsel_mask = MT6370_DBVOUT_MASK, .bypass_reg = MT6370_REG_DB_CTRL1, .bypass_mask = MT6370_DBPERD_MASK, .bypass_val_on = MT6370_DBPERD_MASK, }, { .name = "mt6370-dsv-vpos", .of_match = of_match_ptr("dsvpos"), .regulators_node = of_match_ptr("regulators"), .id = MT6370_IDX_DSVPOS, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .of_parse_cb = mt6370_of_parse_cb, .ops = &mt6370_dbvout_ops, .min_uV = MT6370_DBVOUT_MINUV, .uV_step = MT6370_DBVOUT_STPUV, .n_voltages = MT6370_DBVOUT_N_VOLT, .vsel_reg = MT6370_REG_DB_VPOS, .vsel_mask = MT6370_DBVOUT_MASK, .enable_reg = MT6370_REG_DB_CTRL2, .enable_mask = MT6370_DBVPOSEN_MASK, .ramp_reg = MT6370_REG_DB_VPOS, .ramp_mask = MT6370_DBSLEW_MASK, .ramp_delay_table = mt6370_vpos_ramp_tbl, .n_ramp_values = ARRAY_SIZE(mt6370_vpos_ramp_tbl), .active_discharge_reg = MT6370_REG_DB_CTRL2, .active_discharge_mask = MT6370_DBVPOSDISG_MASK, .active_discharge_on = MT6370_DBVPOSDISG_MASK, }, { .name = "mt6370-dsv-vneg", .of_match = of_match_ptr("dsvneg"), .regulators_node = of_match_ptr("regulators"), .id = MT6370_IDX_DSVNEG, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .of_parse_cb = mt6370_of_parse_cb, .ops = &mt6370_dbvout_ops, .min_uV = MT6370_DBVOUT_MINUV, .uV_step = MT6370_DBVOUT_STPUV, .n_voltages = MT6370_DBVOUT_N_VOLT, .vsel_reg = MT6370_REG_DB_VNEG, .vsel_mask = MT6370_DBVOUT_MASK, .enable_reg = MT6370_REG_DB_CTRL2, .enable_mask = MT6370_DBVNEGEN_MASK, .ramp_reg = MT6370_REG_DB_VNEG, .ramp_mask = MT6370_DBSLEW_MASK, .ramp_delay_table = mt6370_vneg_ramp_tbl, .n_ramp_values = ARRAY_SIZE(mt6370_vneg_ramp_tbl), .active_discharge_reg = MT6370_REG_DB_CTRL2, .active_discharge_mask = MT6370_DBVNEGDISG_MASK, .active_discharge_on = MT6370_DBVNEGDISG_MASK, }, { .name = "mt6370-vib-ldo", .of_match = of_match_ptr("vibldo"), .regulators_node = of_match_ptr("regulators"), .id = MT6370_IDX_VIBLDO, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .ops = &mt6370_ldo_ops, .min_uV = MT6370_LDO_MINUV, .uV_step = MT6370_LDO_STPUV, .n_voltages = MT6370_LDO_N_VOLT, .vsel_reg = MT6370_REG_LDO_VOUT, .vsel_mask = MT6370_LDOVOUT_MASK, .enable_reg = MT6370_REG_LDO_VOUT, .enable_mask = MT6370_LDOEN_MASK, .active_discharge_reg = MT6370_REG_LDO_CFG, .active_discharge_mask = MT6370_LDOOMS_MASK, .active_discharge_on = MT6370_LDOOMS_MASK, } }; static irqreturn_t mt6370_scp_handler(int irq, void *data) { struct regulator_dev *rdev = data; regulator_notifier_call_chain(rdev, REGULATOR_EVENT_UNDER_VOLTAGE, NULL); return IRQ_HANDLED; } static irqreturn_t mt6370_ocp_handler(int irq, void *data) { struct regulator_dev *rdev = data; regulator_notifier_call_chain(rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); return IRQ_HANDLED; } static int mt6370_regulator_irq_register(struct mt6370_priv *priv) { struct platform_device *pdev = to_platform_device(priv->dev); static const struct { const char *name; int rid; irq_handler_t handler; } mt6370_irqs[] = { { "db_vpos_scp", MT6370_IDX_DSVPOS, mt6370_scp_handler }, { "db_vneg_scp", MT6370_IDX_DSVNEG, mt6370_scp_handler }, { "db_vbst_ocp", MT6370_IDX_DSVBOOST, mt6370_ocp_handler }, { "db_vpos_ocp", MT6370_IDX_DSVPOS, mt6370_ocp_handler }, { "db_vneg_ocp", MT6370_IDX_DSVNEG, mt6370_ocp_handler }, { "ldo_oc", MT6370_IDX_VIBLDO, mt6370_ocp_handler } }; struct regulator_dev *rdev; int i, irq, ret; for (i = 0; i < ARRAY_SIZE(mt6370_irqs); i++) { irq = platform_get_irq_byname(pdev, mt6370_irqs[i].name); rdev = priv->rdev[mt6370_irqs[i].rid]; ret = devm_request_threaded_irq(priv->dev, irq, NULL, mt6370_irqs[i].handler, 0, mt6370_irqs[i].name, rdev); if (ret) { dev_err(priv->dev, "Failed to register (%d) interrupt\n", i); return ret; } } return 0; } static int mt6370_regualtor_register(struct mt6370_priv *priv) { struct regulator_dev *rdev; struct regulator_config cfg = {}; struct device *parent = priv->dev->parent; int i; cfg.dev = parent; cfg.driver_data = priv; for (i = 0; i < MT6370_MAX_IDX; i++) { rdev = devm_regulator_register(priv->dev, mt6370_regulator_descs + i, &cfg); if (IS_ERR(rdev)) { dev_err(priv->dev, "Failed to register (%d) regulator\n", i); return PTR_ERR(rdev); } priv->rdev[i] = rdev; } return 0; } static int mt6370_regulator_probe(struct platform_device *pdev) { struct mt6370_priv *priv; int ret; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->dev = &pdev->dev; priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); if (!priv->regmap) { dev_err(&pdev->dev, "Failed to init regmap\n"); return -ENODEV; } ret = mt6370_regualtor_register(priv); if (ret) return ret; return mt6370_regulator_irq_register(priv); } static const struct platform_device_id mt6370_devid_table[] = { { "mt6370-regulator", 0}, {} }; MODULE_DEVICE_TABLE(platform, mt6370_devid_table); static struct platform_driver mt6370_regulator_driver = { .driver = { .name = "mt6370-regulator", }, .id_table = mt6370_devid_table, .probe = mt6370_regulator_probe, }; module_platform_driver(mt6370_regulator_driver); MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); MODULE_DESCRIPTION("Mediatek MT6370 Regulator Driver"); MODULE_LICENSE("GPL v2");
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