The regulators set consists of 3 bucks DCDCs and 4 LDOs. The output voltages are configurable and are meant to supply power to the main processor and other components. Validation: Visual check: cat /sys/kernel/debug/regulator/regulator_summary Validation: userspace-consumer and virtual-regulator required to test further Enable/Disable: cat /sys/devices/platform/userspace-consumer-VDDSHV_SD_IO_PMIC/state echo disabled > /sys/devices/platform/ userspace-consumer-VDDSHV_SD_IO_PMIC/state echo enabled > /sys/devices/platform/ userspace-consumer-VDDSHV_SD_IO_PMIC/state Change voltage: cat /sys/devices/platform/regulator-virtual-ldo1/min_microvolts echo 1000000 > /sys/devices/platform/regulator-virtual-ldo1/ min_microvolts echo 3000000 > /sys/devices/platform/regulator-virtual-ldo1/ max_microvolts Signed-off-by: Jerome NEANNE <jneanne@xxxxxxxxxxxx> --- drivers/regulator/Kconfig | 9 + drivers/regulator/Makefile | 1 + drivers/regulator/tps65219-regulator.c | 334 +++++++++++++++++++++++++ 3 files changed, 344 insertions(+) create mode 100644 drivers/regulator/tps65219-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 24ce9a17ab4f..1a17b925264c 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -1291,6 +1291,15 @@ config REGULATOR_TPS65218 voltage regulators. It supports software based voltage control for different voltage domains +config REGULATOR_TPS65219 + tristate "TI TPS65219 Power regulators" + depends on MFD_TPS65219 && OF + help + This driver supports TPS65219 voltage regulator chips. + TPS65219 series of PMICs have 3 single phase BUCKs & 4 LDOs + voltage regulators. It supports software based voltage control + for different voltage domains + config REGULATOR_TPS6524X tristate "TI TPS6524X Power regulators" depends on SPI diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 8c2f82206b94..790839810e8e 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -152,6 +152,7 @@ obj-$(CONFIG_REGULATOR_TPS65086) += tps65086-regulator.o obj-$(CONFIG_REGULATOR_TPS65090) += tps65090-regulator.o obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o obj-$(CONFIG_REGULATOR_TPS65218) += tps65218-regulator.o +obj-$(CONFIG_REGULATOR_TPS65219) += tps65219-regulator.o obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o diff --git a/drivers/regulator/tps65219-regulator.c b/drivers/regulator/tps65219-regulator.c new file mode 100644 index 000000000000..0e176e15daa6 --- /dev/null +++ b/drivers/regulator/tps65219-regulator.c @@ -0,0 +1,334 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * tps65219-regulator.c + * + * Regulator driver for TPS65219 PMIC + * + * Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/ + */ + +/* This implementation derived from tps65218 authored by "J Keerthy <j-keerthy@xxxxxx>" */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/of_device.h> +#include <linux/regmap.h> +#include <linux/regulator/of_regulator.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/mfd/tps65219.h> + +#define TPS65219_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \ + _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \ + _ct, _ncl, _bpm) \ + { \ + .name = _name, \ + .of_match = _of, \ + .regulators_node = of_match_ptr("regulators"), \ + .supply_name = _of, \ + .id = _id, \ + .ops = &_ops, \ + .n_voltages = _n, \ + .type = _type, \ + .owner = THIS_MODULE, \ + .vsel_reg = _vr, \ + .vsel_mask = _vm, \ + .csel_reg = _cr, \ + .csel_mask = _cm, \ + .curr_table = _ct, \ + .n_current_limits = _ncl, \ + .enable_reg = _er, \ + .enable_mask = _em, \ + .volt_table = NULL, \ + .linear_ranges = _lr, \ + .n_linear_ranges = _nlr, \ + .ramp_delay = _delay, \ + .fixed_uV = _fuv, \ + .bypass_reg = _vr, \ + .bypass_mask = _bpm, \ + .bypass_val_on = 1, \ + } \ + +static const struct linear_range bucks_ranges[] = { + REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000), + REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000), + REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0), +}; + +static const struct linear_range ldos_1_2_ranges[] = { + REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000), + REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0), +}; + +static const struct linear_range ldos_3_4_ranges[] = { + REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0), + REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000), + REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0), +}; + +static int tps65219_pmic_set_voltage_sel(struct regulator_dev *dev, + unsigned int selector) +{ + int ret; + struct tps65219 *tps = rdev_get_drvdata(dev); + + /* Set the voltage based on vsel value */ + ret = tps65219_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask, + selector); + dev_dbg(tps->dev, "%s failed for regulator %s: %d ", __func__, dev->desc->name, ret); + return ret; +} + +static int tps65219_pmic_enable(struct regulator_dev *dev) +{ + struct tps65219 *tps = rdev_get_drvdata(dev); + int rid = rdev_get_id(dev); + int ret; + + + + if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4) + return -EINVAL; + + ret = tps65219_set_bits(tps, dev->desc->enable_reg, + dev->desc->enable_mask, dev->desc->enable_mask); + return ret; +} + +static int tps65219_pmic_disable(struct regulator_dev *dev) +{ + struct tps65219 *tps = rdev_get_drvdata(dev); + int rid = rdev_get_id(dev); + + + if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4) + return -EINVAL; + + + return tps65219_clear_bits(tps, dev->desc->enable_reg, + dev->desc->enable_mask); +} + +static int tps65219_set_mode(struct regulator_dev *dev, unsigned int mode) +{ + struct tps65219 *tps = rdev_get_drvdata(dev); + unsigned int rid = rdev_get_id(dev); + + if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4) + return -EINVAL; + + switch (mode) { + case REGULATOR_MODE_NORMAL: + return tps65219_set_bits(tps, TPS65219_REG_STBY_1_CONFIG, dev->desc->enable_mask, + dev->desc->enable_mask); + + case REGULATOR_MODE_STANDBY: + return tps65219_clear_bits(tps, TPS65219_REG_STBY_1_CONFIG, dev->desc->enable_mask); + } + + return -EINVAL; +} +static unsigned int tps65219_get_mode(struct regulator_dev *dev) +{ + struct tps65219 *tps = rdev_get_drvdata(dev); + unsigned int rid = rdev_get_id(dev); + int ret, value = 0; + + if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4) + return -EINVAL; + + ret = tps65219_reg_read(tps, TPS65219_REG_STBY_1_CONFIG, &value); + value = (value & BIT(rid)) >> rid; + if (!(value & BUCKS_LDOS_STBY_ON_BIT)) + ret = REGULATOR_MODE_STANDBY; + else + ret = REGULATOR_MODE_NORMAL; + return ret; +} + +/* generic regulator_set_bypass_regmap does not match requirements use custom instead */ +static int tps65219_set_bypass(struct regulator_dev *dev, bool enable) +{ + struct tps65219 *tps = rdev_get_drvdata(dev); + unsigned int rid = rdev_get_id(dev); + int ret = 0; + + if (rid < TPS65219_BUCK_1 || rid > TPS65219_LDO_4) + return -EINVAL; + + if (rid < TPS65219_LDO_1 || rid > TPS65219_LDO_2) { + dev_err(tps->dev, "%s bypass allowed for LDO1/2 only ", __func__); + return -EPERM; + } + + if (dev->desc->ops->is_enabled) { + dev_err(tps->dev, "%s LDO%d is enabled, should be shut down to set bypass ", + __func__, rid); + return -EBUSY; + } + + if (enable) { + dev_dbg(tps->dev, "%s, LDO%d already in bypass mode", __func__, rid); + return ret; + } + + ret = tps65219_set_bits(tps, dev->desc->vsel_reg, TPS65219_LDOS_BYP_CONFIG_MASK, + TPS65219_LDOS_BYP_CONFIG_MASK); + dev_dbg(tps->dev, "%s LDO%d switched to bypass mode", __func__, rid); + return ret; +} + +/* Operations permitted on BUCK1/2/3 */ +static const struct regulator_ops tps65219_bucks_ops = { + .is_enabled = regulator_is_enabled_regmap, + .enable = tps65219_pmic_enable, + .disable = tps65219_pmic_disable, + .set_mode = tps65219_set_mode, + .get_mode = tps65219_get_mode, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = tps65219_pmic_set_voltage_sel, + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + +}; + +/* Operations permitted on LDO1/2 */ +static const struct regulator_ops tps65219_ldos_1_2_ops = { + .is_enabled = regulator_is_enabled_regmap, + .enable = tps65219_pmic_enable, + .disable = tps65219_pmic_disable, + .set_mode = tps65219_set_mode, + .get_mode = tps65219_get_mode, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = tps65219_pmic_set_voltage_sel, + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, + .set_bypass = tps65219_set_bypass, + .get_bypass = regulator_get_bypass_regmap, +}; + +/* Operations permitted on LDO3/4 */ +static const struct regulator_ops tps65219_ldos_3_4_ops = { + .is_enabled = regulator_is_enabled_regmap, + .enable = tps65219_pmic_enable, + .disable = tps65219_pmic_disable, + .set_mode = tps65219_set_mode, + .get_mode = tps65219_get_mode, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = tps65219_pmic_set_voltage_sel, + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, +}; + +static const struct regulator_desc regulators[] = { + TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1, + REGULATOR_VOLTAGE, tps65219_bucks_ops, 64, + TPS65219_REG_BUCK1_VOUT, + TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, + TPS65219_ENABLE_BUCK1_EN, 0, 0, bucks_ranges, + 3, 4000, 0, NULL, 0, 0), + TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2, + REGULATOR_VOLTAGE, tps65219_bucks_ops, 64, + TPS65219_REG_BUCK2_VOUT, + TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, + TPS65219_ENABLE_BUCK2_EN, 0, 0, bucks_ranges, + 3, 4000, 0, NULL, 0, 0), + TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3, + REGULATOR_VOLTAGE, tps65219_bucks_ops, 64, + TPS65219_REG_BUCK3_VOUT, + TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, + TPS65219_ENABLE_BUCK3_EN, 0, 0, bucks_ranges, 3, + 0, 0, NULL, 0, 0), + TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1, + REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64, + TPS65219_REG_LDO1_VOUT, + TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, + TPS65219_ENABLE_LDO1_EN, 0, 0, ldos_1_2_ranges, + 2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK), + TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2, + REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64, + TPS65219_REG_LDO2_VOUT, + TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, + TPS65219_ENABLE_LDO2_EN, 0, 0, ldos_1_2_ranges, + 2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK), + TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3, + REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64, + TPS65219_REG_LDO3_VOUT, + TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, + TPS65219_ENABLE_LDO3_EN, 0, 0, ldos_3_4_ranges, + 3, 0, 0, NULL, 0, 0), + TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4, + REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64, + TPS65219_REG_LDO4_VOUT, + TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, + TPS65219_ENABLE_LDO4_EN, 0, 0, ldos_3_4_ranges, + 3, 0, 0, NULL, 0, 0), +}; + +static int tps65219_regulator_probe(struct platform_device *pdev) +{ + struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent); + struct regulator_dev *rdev; + struct regulator_config config = { }; + int i, ret; + unsigned int val; + + + config.dev = tps->dev; + config.driver_data = tps; + config.regmap = tps->regmap; + + /* Allocate memory for strobes */ + tps->strobes = devm_kcalloc(&pdev->dev, + TPS65219_NUM_REGULATOR, sizeof(u8), + GFP_KERNEL); + if (!tps->strobes) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(regulators); i++) { + pr_debug("tps65219 regul i= %d START", i); + rdev = devm_regulator_register(&pdev->dev, ®ulators[i], + &config); + if (IS_ERR(rdev)) { + dev_err(tps->dev, "failed to register %s regulator\n", + pdev->name); + return PTR_ERR(rdev); + } + + ret = regmap_read(tps->regmap, regulators[i].bypass_reg, &val); + if (ret) { + dev_err(tps->dev, "dev_err failed to map register for %s regulator\n", + pdev->name); + return ret; + } + pr_debug("tps65219 regul i= %d COMPLETED", i); + } + + return 0; +} + +static const struct platform_device_id tps65219_regulator_id_table[] = { + { "tps65219-regulator", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, tps65219_regulator_id_table); + +static struct platform_driver tps65219_regulator_driver = { + .driver = { + .name = "tps65219-pmic", + }, + .probe = tps65219_regulator_probe, + .id_table = tps65219_regulator_id_table, +}; + +module_platform_driver(tps65219_regulator_driver); + +MODULE_AUTHOR("J Neanne <j-neanne@xxxxxxxxxxxx>"); +MODULE_DESCRIPTION("TPS65219 voltage regulator driver"); +MODULE_ALIAS("platform:tps65219-pmic"); +MODULE_LICENSE("GPL v2"); -- 2.17.1
