diff options
Diffstat (limited to 'drivers/regulator/s2dos05-regulator.c')
| -rw-r--r-- | drivers/regulator/s2dos05-regulator.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/drivers/regulator/s2dos05-regulator.c b/drivers/regulator/s2dos05-regulator.c new file mode 100644 index 000000000000..1463585c4565 --- /dev/null +++ b/drivers/regulator/s2dos05-regulator.c @@ -0,0 +1,165 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// s2dos05.c - Regulator driver for the Samsung s2dos05 +// +// Copyright (C) 2025 Dzmitry Sankouski <dsankouski@gmail.com> + +#include <linux/bug.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> +#include <linux/mfd/samsung/core.h> +#include <linux/regulator/s2dos05.h> +#include <linux/i2c.h> + +struct s2dos05_data { + struct regmap *regmap; + struct device *dev; +}; + +#define _BUCK(macro) S2DOS05_BUCK##macro +#define _buck_ops(num) s2dos05_ops##num +#define _LDO(macro) S2DOS05_LDO##macro +#define _REG(ctrl) S2DOS05_REG##ctrl +#define _ldo_ops(num) s2dos05_ops##num +#define _MASK(macro) S2DOS05_ENABLE_MASK##macro +#define _TIME(macro) S2DOS05_ENABLE_TIME##macro + +#define BUCK_DESC(_name, _id, _ops, m, s, v, e, em, t, a) { \ + .name = _name, \ + .id = _id, \ + .ops = _ops, \ + .of_match = of_match_ptr(_name), \ + .of_match_full_name = true, \ + .regulators_node = of_match_ptr("regulators"), \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = m, \ + .uV_step = s, \ + .n_voltages = S2DOS05_BUCK_N_VOLTAGES, \ + .vsel_reg = v, \ + .vsel_mask = S2DOS05_BUCK_VSEL_MASK, \ + .enable_reg = e, \ + .enable_mask = em, \ + .enable_time = t, \ + .active_discharge_off = 0, \ + .active_discharge_on = S2DOS05_BUCK_FD_MASK, \ + .active_discharge_reg = a, \ + .active_discharge_mask = S2DOS05_BUCK_FD_MASK \ +} + +#define LDO_DESC(_name, _id, _ops, m, s, v, e, em, t, a) { \ + .name = _name, \ + .id = _id, \ + .ops = _ops, \ + .of_match = of_match_ptr(_name), \ + .of_match_full_name = true, \ + .regulators_node = of_match_ptr("regulators"), \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = m, \ + .uV_step = s, \ + .n_voltages = S2DOS05_LDO_N_VOLTAGES, \ + .vsel_reg = v, \ + .vsel_mask = S2DOS05_LDO_VSEL_MASK, \ + .enable_reg = e, \ + .enable_mask = em, \ + .enable_time = t, \ + .active_discharge_off = 0, \ + .active_discharge_on = S2DOS05_LDO_FD_MASK, \ + .active_discharge_reg = a, \ + .active_discharge_mask = S2DOS05_LDO_FD_MASK \ +} + +static const struct regulator_ops s2dos05_ops = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .set_active_discharge = regulator_set_active_discharge_regmap, +}; + +static const struct regulator_desc regulators[S2DOS05_REGULATOR_MAX] = { + // name, id, ops, min_uv, uV_step, vsel_reg, enable_reg + LDO_DESC("ldo1", _LDO(1), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP1), _REG(_LDO1_CFG), + _REG(_EN), _MASK(_L1), _TIME(_LDO), _REG(_LDO1_CFG)), + LDO_DESC("ldo2", _LDO(2), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP1), _REG(_LDO2_CFG), + _REG(_EN), _MASK(_L2), _TIME(_LDO), _REG(_LDO2_CFG)), + LDO_DESC("ldo3", _LDO(3), &_ldo_ops(), _LDO(_MIN2), + _LDO(_STEP1), _REG(_LDO3_CFG), + _REG(_EN), _MASK(_L3), _TIME(_LDO), _REG(_LDO3_CFG)), + LDO_DESC("ldo4", _LDO(4), &_ldo_ops(), _LDO(_MIN2), + _LDO(_STEP1), _REG(_LDO4_CFG), + _REG(_EN), _MASK(_L4), _TIME(_LDO), _REG(_LDO4_CFG)), + BUCK_DESC("buck", _BUCK(1), &_buck_ops(), _BUCK(_MIN1), + _BUCK(_STEP1), _REG(_BUCK_VOUT), + _REG(_EN), _MASK(_B1), _TIME(_BUCK), _REG(_BUCK_CFG)), +}; + +static int s2dos05_pmic_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct s2dos05_data *s2dos05; + struct regulator_config config = { }; + unsigned int rdev_num = ARRAY_SIZE(regulators); + + s2dos05 = devm_kzalloc(dev, sizeof(*s2dos05), GFP_KERNEL); + if (!s2dos05) + return -ENOMEM; + + platform_set_drvdata(pdev, s2dos05); + + s2dos05->regmap = iodev->regmap_pmic; + s2dos05->dev = dev; + if (!dev->of_node) + dev->of_node = dev->parent->of_node; + + config.dev = dev; + config.driver_data = s2dos05; + + for (int i = 0; i < rdev_num; i++) { + struct regulator_dev *regulator; + + regulator = devm_regulator_register(&pdev->dev, + ®ulators[i], &config); + if (IS_ERR(regulator)) { + return dev_err_probe(&pdev->dev, PTR_ERR(regulator), + "regulator init failed for %d\n", i); + } + } + + return 0; +} + +static const struct platform_device_id s2dos05_pmic_id[] = { + { "s2dos05-regulator" }, + { }, +}; +MODULE_DEVICE_TABLE(platform, s2dos05_pmic_id); + +static struct platform_driver s2dos05_platform_driver = { + .driver = { + .name = "s2dos05", + }, + .probe = s2dos05_pmic_probe, + .id_table = s2dos05_pmic_id, +}; +module_platform_driver(s2dos05_platform_driver); + +MODULE_AUTHOR("Dzmitry Sankouski <dsankouski@gmail.com>"); +MODULE_DESCRIPTION("Samsung S2DOS05 Regulator Driver"); +MODULE_LICENSE("GPL"); |