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Dzmitry Sankouskibroonie
Dzmitry Sankouski
authored and
broonie
committed
regulator: add s2dos05 regulator support
S2DOS05 has 1 buck and 4 LDO regulators, used for powering panel/touchscreen. Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com> Link: https://patch.msgid.link/20250805-starqltechn_integration_upstream-v8-1-09d8a321fafe@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
1 parent f6cc414 commit bb24414

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Lines changed: 248 additions & 1 deletion

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‎MAINTAINERS‎

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@@ -22387,7 +22387,7 @@ F: Documentation/devicetree/bindings/regulator/samsung,s2m*.yaml
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F: Documentation/devicetree/bindings/regulator/samsung,s5m*.yaml
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F: drivers/clk/clk-s2mps11.c
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F: drivers/mfd/sec*.[ch]
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F: drivers/regulator/s2m*.c
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F: drivers/regulator/s2*.c
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F: drivers/regulator/s5m*.c
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F: drivers/rtc/rtc-s5m.c
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F: include/linux/mfd/samsung/

‎drivers/regulator/Kconfig‎

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@@ -1344,6 +1344,14 @@ config REGULATOR_RTQ2208
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and two ldos. It features wide output voltage range from 0.4V to 2.05V
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and the capability to configure the corresponding power stages.
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config REGULATOR_S2DOS05
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tristate "Samsung S2DOS05 voltage regulator"
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depends on MFD_SEC_CORE || COMPILE_TEST
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help
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This driver provides support for the voltage regulators of the S2DOS05.
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The S2DOS05 is a companion power management IC for the smart phones.
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The S2DOS05 has 4 LDOs and 1 BUCK outputs.
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config REGULATOR_S2MPA01
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tristate "Samsung S2MPA01 voltage regulator"
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depends on MFD_SEC_CORE || COMPILE_TEST

‎drivers/regulator/Makefile‎

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@@ -156,6 +156,7 @@ obj-$(CONFIG_REGULATOR_RTMV20) += rtmv20-regulator.o
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obj-$(CONFIG_REGULATOR_RTQ2134) += rtq2134-regulator.o
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obj-$(CONFIG_REGULATOR_RTQ6752) += rtq6752-regulator.o
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obj-$(CONFIG_REGULATOR_RTQ2208) += rtq2208-regulator.o
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obj-$(CONFIG_REGULATOR_S2DOS05) += s2dos05-regulator.o
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obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o
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obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o
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obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o

‎drivers/regulator/s2dos05-regulator.c‎

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

‎include/linux/regulator/s2dos05.h‎

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/* SPDX-License-Identifier: GPL-2.0+ */
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// s2dos05.h
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//
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// Copyright (c) 2016 Samsung Electronics Co., Ltd
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// http://www.samsung.com
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// Copyright (C) 2024 Dzmitry Sankouski <dsankouski@gmail.com>
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#ifndef __LINUX_S2DOS05_H
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#define __LINUX_S2DOS05_H
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// S2DOS05 registers
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// Slave Addr : 0xC0
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enum S2DOS05_reg {
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S2DOS05_REG_DEV_ID,
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S2DOS05_REG_TOPSYS_STAT,
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S2DOS05_REG_STAT,
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S2DOS05_REG_EN,
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S2DOS05_REG_LDO1_CFG,
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S2DOS05_REG_LDO2_CFG,
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S2DOS05_REG_LDO3_CFG,
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S2DOS05_REG_LDO4_CFG,
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S2DOS05_REG_BUCK_CFG,
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S2DOS05_REG_BUCK_VOUT,
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S2DOS05_REG_IRQ_MASK = 0x0D,
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S2DOS05_REG_SSD_TSD = 0x0E,
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S2DOS05_REG_OCL = 0x10,
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S2DOS05_REG_IRQ = 0x11
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};
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// S2DOS05 regulator ids
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enum S2DOS05_regulators {
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S2DOS05_LDO1,
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S2DOS05_LDO2,
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S2DOS05_LDO3,
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S2DOS05_LDO4,
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S2DOS05_BUCK1,
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S2DOS05_REG_MAX,
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};
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#define S2DOS05_IRQ_PWRMT_MASK BIT(5)
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#define S2DOS05_IRQ_TSD_MASK BIT(4)
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#define S2DOS05_IRQ_SSD_MASK BIT(3)
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#define S2DOS05_IRQ_SCP_MASK BIT(2)
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#define S2DOS05_IRQ_UVLO_MASK BIT(1)
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#define S2DOS05_IRQ_OCD_MASK BIT(0)
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#define S2DOS05_BUCK_MIN1 506250
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#define S2DOS05_LDO_MIN1 1500000
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#define S2DOS05_LDO_MIN2 2700000
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#define S2DOS05_BUCK_STEP1 6250
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#define S2DOS05_LDO_STEP1 25000
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#define S2DOS05_LDO_VSEL_MASK 0x7F
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#define S2DOS05_LDO_FD_MASK 0x80
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#define S2DOS05_BUCK_VSEL_MASK 0xFF
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#define S2DOS05_BUCK_FD_MASK 0x08
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#define S2DOS05_ENABLE_MASK_L1 BIT(0)
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#define S2DOS05_ENABLE_MASK_L2 BIT(1)
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#define S2DOS05_ENABLE_MASK_L3 BIT(2)
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#define S2DOS05_ENABLE_MASK_L4 BIT(3)
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#define S2DOS05_ENABLE_MASK_B1 BIT(4)
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#define S2DOS05_RAMP_DELAY 12000
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#define S2DOS05_ENABLE_TIME_LDO 50
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#define S2DOS05_ENABLE_TIME_BUCK 350
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#define S2DOS05_LDO_N_VOLTAGES (S2DOS05_LDO_VSEL_MASK + 1)
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#define S2DOS05_BUCK_N_VOLTAGES (S2DOS05_BUCK_VSEL_MASK + 1)
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#define S2DOS05_REGULATOR_MAX (S2DOS05_REG_MAX)
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#endif // __LINUX_S2DOS05_H

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