@@ -1027,6 +1027,13 @@ config REGULATOR_PWM
This driver supports PWM controlled voltage regulators. PWM
duty cycle can increase or decrease the voltage.
+config REGULATOR_QCOM_PM8008
+ tristate "Qualcomm PM8008 PMIC regulators"
+ depends on MFD_QCOM_PM8008
+ help
+ Select this option to enable support for the voltage regulators in
+ Qualcomm PM8008 PMICs.
+
config REGULATOR_QCOM_REFGEN
tristate "Qualcomm REFGEN regulator driver"
depends on ARCH_QCOM || COMPILE_TEST
@@ -112,6 +112,7 @@ obj-$(CONFIG_REGULATOR_MT6380) += mt6380-regulator.o
obj-$(CONFIG_REGULATOR_MT6397) += mt6397-regulator.o
obj-$(CONFIG_REGULATOR_MTK_DVFSRC) += mtk-dvfsrc-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_LABIBB) += qcom-labibb-regulator.o
+obj-$(CONFIG_REGULATOR_QCOM_PM8008) += qcom-pm8008-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_REFGEN) += qcom-refgen-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_RPM) += qcom_rpm-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_RPMH) += qcom-rpmh-regulator.o
new file mode 100644
@@ -0,0 +1,198 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2024 Linaro Limited
+ */
+
+#include <linux/array_size.h>
+#include <linux/bits.h>
+#include <linux/device.h>
+#include <linux/math.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+#include <asm/byteorder.h>
+
+#define DEFAULT_VOLTAGE_STEPPER_RATE 38400
+
+#define LDO_STEPPER_CTL_REG 0x3b
+#define STEP_RATE_MASK GENMASK(1, 0)
+
+#define LDO_VSET_LB_REG 0x40
+
+#define LDO_ENABLE_REG 0x46
+#define ENABLE_BIT BIT(7)
+
+struct pm8008_regulator {
+ struct regmap *regmap;
+ struct regulator_desc desc;
+ unsigned int base;
+};
+
+struct pm8008_regulator_data {
+ const char *name;
+ const char *supply_name;
+ unsigned int base;
+ int min_dropout_uV;
+ const struct linear_range *voltage_range;
+};
+
+static const struct linear_range nldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE(528000, 0, 122, 8000),
+};
+
+static const struct linear_range pldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1504000, 0, 237, 8000),
+};
+
+static const struct pm8008_regulator_data pm8008_reg_data[] = {
+ { "ldo1", "vdd-l1-l2", 0x4000, 225000, nldo_ranges, },
+ { "ldo2", "vdd-l1-l2", 0x4100, 225000, nldo_ranges, },
+ { "ldo3", "vdd-l3-l4", 0x4200, 300000, pldo_ranges, },
+ { "ldo4", "vdd-l3-l4", 0x4300, 300000, pldo_ranges, },
+ { "ldo5", "vdd-l5", 0x4400, 200000, pldo_ranges, },
+ { "ldo6", "vdd-l6", 0x4500, 200000, pldo_ranges, },
+ { "ldo7", "vdd-l7", 0x4600, 200000, pldo_ranges, },
+};
+
+static int pm8008_regulator_set_voltage_sel(struct regulator_dev *rdev, unsigned int sel)
+{
+ struct pm8008_regulator *preg = rdev_get_drvdata(rdev);
+ unsigned int mV;
+ __le16 val;
+ int ret;
+
+ ret = regulator_list_voltage_linear_range(rdev, sel);
+ if (ret < 0)
+ return ret;
+
+ mV = DIV_ROUND_UP(ret, 1000);
+
+ val = cpu_to_le16(mV);
+
+ ret = regmap_bulk_write(preg->regmap, preg->base + LDO_VSET_LB_REG,
+ &val, sizeof(val));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int pm8008_regulator_get_voltage_sel(struct regulator_dev *rdev)
+{
+ struct pm8008_regulator *preg = rdev_get_drvdata(rdev);
+ unsigned int uV;
+ __le16 val;
+ int ret;
+
+ ret = regmap_bulk_read(preg->regmap, preg->base + LDO_VSET_LB_REG,
+ &val, sizeof(val));
+ if (ret < 0)
+ return ret;
+
+ uV = le16_to_cpu(val) * 1000;
+
+ return (uV - preg->desc.min_uV) / preg->desc.uV_step;
+}
+
+static const struct regulator_ops pm8008_regulator_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .set_voltage_sel = pm8008_regulator_set_voltage_sel,
+ .get_voltage_sel = pm8008_regulator_get_voltage_sel,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+};
+
+static int pm8008_regulator_probe(struct platform_device *pdev)
+{
+ const struct pm8008_regulator_data *data;
+ struct regulator_config config = {};
+ struct device *dev = &pdev->dev;
+ struct pm8008_regulator *preg;
+ struct regulator_desc *desc;
+ struct regulator_dev *rdev;
+ struct regmap *regmap;
+ unsigned int val;
+ int ret, i;
+
+ regmap = dev_get_regmap(dev->parent, "secondary");
+ if (!regmap)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(pm8008_reg_data); i++) {
+ data = &pm8008_reg_data[i];
+
+ preg = devm_kzalloc(dev, sizeof(*preg), GFP_KERNEL);
+ if (!preg)
+ return -ENOMEM;
+
+ preg->regmap = regmap;
+ preg->base = data->base;
+
+ desc = &preg->desc;
+
+ desc->name = data->name;
+ desc->supply_name = data->supply_name;
+ desc->of_match = data->name;
+ desc->regulators_node = of_match_ptr("regulators");
+ desc->ops = &pm8008_regulator_ops;
+ desc->type = REGULATOR_VOLTAGE;
+ desc->owner = THIS_MODULE;
+
+ desc->linear_ranges = data->voltage_range;
+ desc->n_linear_ranges = 1;
+ desc->uV_step = desc->linear_ranges[0].step;
+ desc->min_uV = desc->linear_ranges[0].min;
+ desc->n_voltages = linear_range_values_in_range(&desc->linear_ranges[0]);
+
+ ret = regmap_read(regmap, preg->base + LDO_STEPPER_CTL_REG, &val);
+ if (ret < 0) {
+ dev_err(dev, "failed to read step rate: %d\n", ret);
+ return ret;
+ }
+ val &= STEP_RATE_MASK;
+ desc->ramp_delay = DEFAULT_VOLTAGE_STEPPER_RATE >> val;
+
+ desc->min_dropout_uV = data->min_dropout_uV;
+
+ desc->enable_reg = preg->base + LDO_ENABLE_REG;
+ desc->enable_mask = ENABLE_BIT;
+
+ config.dev = dev->parent;
+ config.driver_data = preg;
+ config.regmap = regmap;
+
+ rdev = devm_regulator_register(dev, desc, &config);
+ if (IS_ERR(rdev)) {
+ ret = PTR_ERR(rdev);
+ dev_err(dev, "failed to register regulator %s: %d\n",
+ desc->name, ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id pm8008_regulator_id_table[] = {
+ { "pm8008-regulator" },
+ { }
+};
+MODULE_DEVICE_TABLE(platform, pm8008_regulator_id_table);
+
+static struct platform_driver pm8008_regulator_driver = {
+ .driver = {
+ .name = "qcom-pm8008-regulator",
+ },
+ .probe = pm8008_regulator_probe,
+ .id_table = pm8008_regulator_id_table,
+};
+module_platform_driver(pm8008_regulator_driver);
+
+MODULE_DESCRIPTION("Qualcomm PM8008 PMIC regulator driver");
+MODULE_LICENSE("GPL");