mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
synced 2024-12-28 16:52:18 +00:00
41cff178e3
This follows on the change ("regulator: Set PROBE_PREFER_ASYNCHRONOUS
for drivers that existed in 4.14") but changes regulators didn't exist
in Linux 5.15 but did exist in Linux 6.1.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20230316125351.6.Ibc8a86ddd5055ebbbe487a529199db7b36ccad1a@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
203 lines
6.5 KiB
C
203 lines
6.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
//
|
|
// Regulator driver for TPS68470 PMIC
|
|
//
|
|
// Copyright (c) 2021 Red Hat Inc.
|
|
// Copyright (C) 2018 Intel Corporation
|
|
//
|
|
// Authors:
|
|
// Hans de Goede <hdegoede@redhat.com>
|
|
// Zaikuo Wang <zaikuo.wang@intel.com>
|
|
// Tianshu Qiu <tian.shu.qiu@intel.com>
|
|
// Jian Xu Zheng <jian.xu.zheng@intel.com>
|
|
// Yuning Pu <yuning.pu@intel.com>
|
|
// Rajmohan Mani <rajmohan.mani@intel.com>
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/device.h>
|
|
#include <linux/err.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mfd/tps68470.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_data/tps68470.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
|
|
struct tps68470_regulator_data {
|
|
struct clk *clk;
|
|
};
|
|
|
|
#define TPS68470_REGULATOR(_name, _id, _ops, _n, \
|
|
_vr, _vm, _er, _em, _lr, _nlr) \
|
|
[TPS68470_ ## _name] = { \
|
|
.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, \
|
|
.linear_ranges = _lr, \
|
|
.n_linear_ranges = _nlr, \
|
|
}
|
|
|
|
static const struct linear_range tps68470_ldo_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(875000, 0, 125, 17800),
|
|
};
|
|
|
|
static const struct linear_range tps68470_core_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(900000, 0, 42, 25000),
|
|
};
|
|
|
|
static int tps68470_regulator_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct tps68470_regulator_data *data = rdev->reg_data;
|
|
int ret;
|
|
|
|
/* The Core buck regulator needs the PMIC's PLL to be enabled */
|
|
if (rdev->desc->id == TPS68470_CORE) {
|
|
ret = clk_prepare_enable(data->clk);
|
|
if (ret) {
|
|
dev_err(&rdev->dev, "Error enabling TPS68470 clock\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return regulator_enable_regmap(rdev);
|
|
}
|
|
|
|
static int tps68470_regulator_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct tps68470_regulator_data *data = rdev->reg_data;
|
|
|
|
if (rdev->desc->id == TPS68470_CORE)
|
|
clk_disable_unprepare(data->clk);
|
|
|
|
return regulator_disable_regmap(rdev);
|
|
}
|
|
|
|
/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
|
|
static const 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_ops tps68470_always_on_reg_ops = {
|
|
.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, tps68470_regulator_ops, 43,
|
|
TPS68470_REG_VDVAL, TPS68470_VDVAL_DVOLT_MASK,
|
|
TPS68470_REG_VDCTL, TPS68470_VDCTL_EN_MASK,
|
|
tps68470_core_ranges, ARRAY_SIZE(tps68470_core_ranges)),
|
|
TPS68470_REGULATOR(ANA, TPS68470_ANA, tps68470_regulator_ops, 126,
|
|
TPS68470_REG_VAVAL, TPS68470_VAVAL_AVOLT_MASK,
|
|
TPS68470_REG_VACTL, TPS68470_VACTL_EN_MASK,
|
|
tps68470_ldo_ranges, ARRAY_SIZE(tps68470_ldo_ranges)),
|
|
TPS68470_REGULATOR(VCM, TPS68470_VCM, tps68470_regulator_ops, 126,
|
|
TPS68470_REG_VCMVAL, TPS68470_VCMVAL_VCVOLT_MASK,
|
|
TPS68470_REG_VCMCTL, TPS68470_VCMCTL_EN_MASK,
|
|
tps68470_ldo_ranges, ARRAY_SIZE(tps68470_ldo_ranges)),
|
|
TPS68470_REGULATOR(VIO, TPS68470_VIO, tps68470_always_on_reg_ops, 126,
|
|
TPS68470_REG_VIOVAL, TPS68470_VIOVAL_IOVOLT_MASK,
|
|
0, 0,
|
|
tps68470_ldo_ranges, ARRAY_SIZE(tps68470_ldo_ranges)),
|
|
/*
|
|
* (1) This regulator must have the same voltage as VIO if S_IO LDO is used to
|
|
* power a sensor/VCM which I2C is daisy chained behind the PMIC.
|
|
* (2) If there is no I2C daisy chain it can be set freely.
|
|
*/
|
|
TPS68470_REGULATOR(VSIO, TPS68470_VSIO, tps68470_regulator_ops, 126,
|
|
TPS68470_REG_VSIOVAL, TPS68470_VSIOVAL_IOVOLT_MASK,
|
|
TPS68470_REG_S_I2C_CTL, TPS68470_S_I2C_CTL_EN_MASK,
|
|
tps68470_ldo_ranges, ARRAY_SIZE(tps68470_ldo_ranges)),
|
|
TPS68470_REGULATOR(AUX1, TPS68470_AUX1, tps68470_regulator_ops, 126,
|
|
TPS68470_REG_VAUX1VAL, TPS68470_VAUX1VAL_AUX1VOLT_MASK,
|
|
TPS68470_REG_VAUX1CTL, TPS68470_VAUX1CTL_EN_MASK,
|
|
tps68470_ldo_ranges, ARRAY_SIZE(tps68470_ldo_ranges)),
|
|
TPS68470_REGULATOR(AUX2, TPS68470_AUX2, tps68470_regulator_ops, 126,
|
|
TPS68470_REG_VAUX2VAL, TPS68470_VAUX2VAL_AUX2VOLT_MASK,
|
|
TPS68470_REG_VAUX2CTL, TPS68470_VAUX2CTL_EN_MASK,
|
|
tps68470_ldo_ranges, ARRAY_SIZE(tps68470_ldo_ranges)),
|
|
};
|
|
|
|
static int tps68470_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct tps68470_regulator_platform_data *pdata = dev_get_platdata(dev);
|
|
struct tps68470_regulator_data *data;
|
|
struct regulator_config config = { };
|
|
struct regulator_dev *rdev;
|
|
int i;
|
|
|
|
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->clk = devm_clk_get(dev, "tps68470-clk");
|
|
if (IS_ERR(data->clk))
|
|
return dev_err_probe(dev, PTR_ERR(data->clk), "getting tps68470-clk\n");
|
|
|
|
config.dev = dev->parent;
|
|
config.regmap = dev_get_drvdata(dev->parent);
|
|
config.driver_data = data;
|
|
|
|
for (i = 0; i < TPS68470_NUM_REGULATORS; i++) {
|
|
if (pdata)
|
|
config.init_data = pdata->reg_init_data[i];
|
|
else
|
|
config.init_data = NULL;
|
|
|
|
rdev = devm_regulator_register(dev, ®ulators[i], &config);
|
|
if (IS_ERR(rdev))
|
|
return dev_err_probe(dev, PTR_ERR(rdev),
|
|
"registering %s regulator\n",
|
|
regulators[i].name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver tps68470_regulator_driver = {
|
|
.driver = {
|
|
.name = "tps68470-regulator",
|
|
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
|
|
},
|
|
.probe = tps68470_regulator_probe,
|
|
};
|
|
|
|
/*
|
|
* The ACPI tps68470 probe-ordering depends on the clk/gpio/regulator drivers
|
|
* registering before the drivers for the camera-sensors which use them bind.
|
|
* subsys_initcall() ensures this when the drivers are builtin.
|
|
*/
|
|
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_ALIAS("platform:tps68470-regulator");
|
|
MODULE_DESCRIPTION("TPS68470 voltage regulator driver");
|
|
MODULE_LICENSE("GPL v2");
|