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tps68470-regulator.c
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tps68470-regulator.c
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// SPDX-License_Identifier: GPL-2.0
/* Copyright (C) 2018 Intel Corporation
*
* Regulator driver for TPS68470 PMIC
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps68470.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 18, 0)
#define TPS68470_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, \
_vm, _er, _em, _t, _lr, _nlr) \
{ \
.name = _name, \
.id = _id, \
.of_match = of_match_ptr(_of_match), \
.regulators_node = of_match_ptr("regulators"), \
.ops = &_ops, \
.n_voltages = _n, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.vsel_reg = _vr, \
.vsel_mask = _vm, \
.enable_reg = _er, \
.enable_mask = _em, \
.volt_table = _t, \
.linear_ranges = _lr, \
.n_linear_ranges = _nlr, \
}
#else
#define TPS68470_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, \
_vm, _er, _em, _t, _lr, _nlr) \
{ \
.name = _name, \
.id = _id, \
.ops = &_ops, \
.n_voltages = _n, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.vsel_reg = _vr, \
.vsel_mask = _vm, \
.enable_reg = _er, \
.enable_mask = _em, \
.volt_table = _t, \
.linear_ranges = _lr, \
.n_linear_ranges = _nlr, \
}
#endif
static const struct regulator_linear_range tps68470_ldo_ranges[] = {
REGULATOR_LINEAR_RANGE(875000, 0, 125, 17800),
};
static const struct regulator_linear_range tps68470_core_ranges[] = {
REGULATOR_LINEAR_RANGE(900000, 0, 42, 25000),
};
static int tps68470_regulator_enable(struct regulator_dev *dev)
{
struct tps68470 *tps = rdev_get_drvdata(dev);
return tps68470_set_bits(tps, dev->desc->enable_reg,
dev->desc->enable_mask,
dev->desc->enable_mask);
}
static int tps68470_regulator_disable(struct regulator_dev *dev)
{
struct tps68470 *tps = rdev_get_drvdata(dev);
return tps68470_clear_bits(tps, dev->desc->enable_reg,
dev->desc->enable_mask);
}
/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
static struct regulator_ops tps68470_regulator_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = tps68470_regulator_enable,
.disable = tps68470_regulator_disable,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
};
static const struct regulator_desc regulators[] = {
TPS68470_REGULATOR("CORE", TPS68470_CORE, "core",
tps68470_regulator_ops, 43, TPS68470_REG_VDVAL,
TPS68470_VDVAL_DVOLT_MASK, TPS68470_REG_VDCTL,
TPS68470_VDCTL_EN_MASK,
NULL, tps68470_core_ranges,
ARRAY_SIZE(tps68470_core_ranges)),
TPS68470_REGULATOR("ANA", TPS68470_ANA, "ana",
tps68470_regulator_ops, 126, TPS68470_REG_VAVAL,
TPS68470_VAVAL_AVOLT_MASK, TPS68470_REG_VACTL,
TPS68470_VACTL_EN_MASK,
NULL, tps68470_ldo_ranges,
ARRAY_SIZE(tps68470_ldo_ranges)),
TPS68470_REGULATOR("VCM", TPS68470_VCM, "vcm",
tps68470_regulator_ops, 126, TPS68470_REG_VCMVAL,
TPS68470_VCMVAL_VCVOLT_MASK, TPS68470_REG_VCMCTL,
TPS68470_VCMCTL_EN_MASK,
NULL, tps68470_ldo_ranges,
ARRAY_SIZE(tps68470_ldo_ranges)),
TPS68470_REGULATOR("VIO", TPS68470_VIO, "vio",
tps68470_regulator_ops, 126, TPS68470_REG_VIOVAL,
TPS68470_VIOVAL_IOVOLT_MASK, TPS68470_REG_S_I2C_CTL,
TPS68470_S_I2C_CTL_EN_MASK,
NULL, tps68470_ldo_ranges,
ARRAY_SIZE(tps68470_ldo_ranges)),
/*
* (1) This register must have same setting as VIOVAL if S_IO LDO is used to
* power daisy chained IOs in the receive side.
* (2) If there is no I2C daisy chain it can be set freely.
*
*/
TPS68470_REGULATOR("VSIO", TPS68470_VSIO, "vsio",
tps68470_regulator_ops, 126, TPS68470_REG_VSIOVAL,
TPS68470_VSIOVAL_IOVOLT_MASK, TPS68470_REG_S_I2C_CTL,
TPS68470_S_I2C_CTL_EN_MASK,
NULL, tps68470_ldo_ranges,
ARRAY_SIZE(tps68470_ldo_ranges)),
TPS68470_REGULATOR("AUX1", TPS68470_AUX1, "aux1",
tps68470_regulator_ops, 126, TPS68470_REG_VAUX1VAL,
TPS68470_VAUX1VAL_AUX1VOLT_MASK,
TPS68470_REG_VAUX1CTL,
TPS68470_VAUX1CTL_EN_MASK,
NULL, tps68470_ldo_ranges,
ARRAY_SIZE(tps68470_ldo_ranges)),
TPS68470_REGULATOR("AUX2", TPS68470_AUX2, "aux2",
tps68470_regulator_ops, 126, TPS68470_REG_VAUX2VAL,
TPS68470_VAUX2VAL_AUX2VOLT_MASK,
TPS68470_REG_VAUX2CTL,
TPS68470_VAUX2CTL_EN_MASK,
NULL, tps68470_ldo_ranges,
ARRAY_SIZE(tps68470_ldo_ranges)),
};
#define tps68470_reg_init_data(_name, _min_uV, _max_uV)\
{\
.constraints = {\
.name = (const char *)_name,\
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \
| REGULATOR_CHANGE_STATUS,\
.min_uV = _min_uV,\
.max_uV = _max_uV,\
},\
}
struct regulator_init_data tps68470_init[] = {
tps68470_reg_init_data("CORE", 900000, 1950000),
tps68470_reg_init_data("ANA", 875000, 3100000),
tps68470_reg_init_data("VCM", 875000, 3100000),
tps68470_reg_init_data("VIO", 875000, 3100000),
tps68470_reg_init_data("VSIO", 875000, 3100000),
tps68470_reg_init_data("AUX1", 875000, 3100000),
tps68470_reg_init_data("AUX2", 875000, 3100000),
};
static int tps68470_regulator_probe(struct platform_device *pdev)
{
struct tps68470 *tps = dev_get_drvdata(pdev->dev.parent);
struct tps68470_board *pdata = dev_get_platdata(tps->dev);
struct regulator_dev *rdev;
struct regulator_config config = { };
int i;
platform_set_drvdata(pdev, tps);
for (i = 0; i < TPS68470_NUM_REGULATOR; i++) {
/* Register the regulators */
config.dev = tps->dev;
if (pdata)
config.init_data = pdata->tps68470_init_data[i];
else
config.init_data = &tps68470_init[i];
config.driver_data = tps;
config.regmap = tps->regmap;
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);
}
dev_info(tps->dev, "Registered %s regulator\n",
pdev->name);
}
return 0;
}
static struct platform_driver tps68470_regulator_driver = {
.driver = {
.name = "tps68470-regulator",
},
.probe = tps68470_regulator_probe,
};
static int __init tps68470_regulator_init(void)
{
return platform_driver_register(&tps68470_regulator_driver);
}
subsys_initcall(tps68470_regulator_init);
static void __exit tps68470_regulator_exit(void)
{
platform_driver_unregister(&tps68470_regulator_driver);
}
module_exit(tps68470_regulator_exit);
MODULE_AUTHOR("Zaikuo Wang <zaikuo.wang@intel.com>");
MODULE_AUTHOR("Tianshu Qiu <tian.shu.qiu@intel.com>");
MODULE_AUTHOR("Jian Xu Zheng <jian.xu.zheng@intel.com>");
MODULE_AUTHOR("Yuning Pu <yuning.pu@intel.com>");
MODULE_AUTHOR("Rajmohan Mani <rajmohan.mani@intel.com>");
MODULE_DESCRIPTION("TPS68470 voltage regulator driver");
MODULE_ALIAS("platform:tps68470-regulator");
MODULE_LICENSE("GPL v2");