mirror of
https://github.com/torvalds/linux.git
synced 2024-12-13 06:32:50 +00:00
2aec85b26f
Based on the normalized pattern:
this program is free software you can redistribute it and/or modify it
under the terms of the gnu general public license as published by the
free software foundation version 2 this program is distributed as is
without any warranty of any kind whether express or implied without
even the implied warranty of merchantability or fitness for a
particular purpose see the gnu general public license for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
281 lines
8.7 KiB
C
281 lines
8.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* tps65217-regulator.c
|
|
*
|
|
* Regulator driver for TPS65217 PMIC
|
|
*
|
|
* Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
|
|
*/
|
|
|
|
#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/regulator/of_regulator.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/mfd/tps65217.h>
|
|
|
|
#define TPS65217_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, _vm, _em, \
|
|
_t, _lr, _nlr, _sr, _sm) \
|
|
{ \
|
|
.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 = TPS65217_REG_ENABLE, \
|
|
.enable_mask = _em, \
|
|
.volt_table = _t, \
|
|
.linear_ranges = _lr, \
|
|
.n_linear_ranges = _nlr, \
|
|
.bypass_reg = _sr, \
|
|
.bypass_mask = _sm, \
|
|
} \
|
|
|
|
static const unsigned int LDO1_VSEL_table[] = {
|
|
1000000, 1100000, 1200000, 1250000,
|
|
1300000, 1350000, 1400000, 1500000,
|
|
1600000, 1800000, 2500000, 2750000,
|
|
2800000, 3000000, 3100000, 3300000,
|
|
};
|
|
|
|
static const struct linear_range tps65217_uv1_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(900000, 0, 24, 25000),
|
|
REGULATOR_LINEAR_RANGE(1550000, 25, 52, 50000),
|
|
REGULATOR_LINEAR_RANGE(3000000, 53, 55, 100000),
|
|
REGULATOR_LINEAR_RANGE(3300000, 56, 63, 0),
|
|
};
|
|
|
|
static const struct linear_range tps65217_uv2_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(1500000, 0, 8, 50000),
|
|
REGULATOR_LINEAR_RANGE(2000000, 9, 13, 100000),
|
|
REGULATOR_LINEAR_RANGE(2450000, 14, 31, 50000),
|
|
};
|
|
|
|
static int tps65217_pmic_enable(struct regulator_dev *dev)
|
|
{
|
|
struct tps65217 *tps = rdev_get_drvdata(dev);
|
|
int rid = rdev_get_id(dev);
|
|
|
|
if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
|
|
return -EINVAL;
|
|
|
|
/* Enable the regulator and password protection is level 1 */
|
|
return tps65217_set_bits(tps, TPS65217_REG_ENABLE,
|
|
dev->desc->enable_mask, dev->desc->enable_mask,
|
|
TPS65217_PROTECT_L1);
|
|
}
|
|
|
|
static int tps65217_pmic_disable(struct regulator_dev *dev)
|
|
{
|
|
struct tps65217 *tps = rdev_get_drvdata(dev);
|
|
int rid = rdev_get_id(dev);
|
|
|
|
if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
|
|
return -EINVAL;
|
|
|
|
/* Disable the regulator and password protection is level 1 */
|
|
return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,
|
|
dev->desc->enable_mask, TPS65217_PROTECT_L1);
|
|
}
|
|
|
|
static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev,
|
|
unsigned selector)
|
|
{
|
|
int ret;
|
|
struct tps65217 *tps = rdev_get_drvdata(dev);
|
|
unsigned int rid = rdev_get_id(dev);
|
|
|
|
/* Set the voltage based on vsel value and write protect level is 2 */
|
|
ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
|
|
selector, TPS65217_PROTECT_L2);
|
|
|
|
/* Set GO bit for DCDCx to initiate voltage transistion */
|
|
switch (rid) {
|
|
case TPS65217_DCDC_1 ... TPS65217_DCDC_3:
|
|
ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,
|
|
TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,
|
|
TPS65217_PROTECT_L2);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tps65217_pmic_set_suspend_enable(struct regulator_dev *dev)
|
|
{
|
|
struct tps65217 *tps = rdev_get_drvdata(dev);
|
|
unsigned int rid = rdev_get_id(dev);
|
|
|
|
if (rid > TPS65217_LDO_4)
|
|
return -EINVAL;
|
|
|
|
return tps65217_clear_bits(tps, dev->desc->bypass_reg,
|
|
dev->desc->bypass_mask,
|
|
TPS65217_PROTECT_L1);
|
|
}
|
|
|
|
static int tps65217_pmic_set_suspend_disable(struct regulator_dev *dev)
|
|
{
|
|
struct tps65217 *tps = rdev_get_drvdata(dev);
|
|
unsigned int rid = rdev_get_id(dev);
|
|
|
|
if (rid > TPS65217_LDO_4)
|
|
return -EINVAL;
|
|
|
|
if (!tps->strobes[rid])
|
|
return -EINVAL;
|
|
|
|
return tps65217_set_bits(tps, dev->desc->bypass_reg,
|
|
dev->desc->bypass_mask,
|
|
tps->strobes[rid], TPS65217_PROTECT_L1);
|
|
}
|
|
|
|
/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
|
|
static const struct regulator_ops tps65217_pmic_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = tps65217_pmic_enable,
|
|
.disable = tps65217_pmic_disable,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = tps65217_pmic_set_voltage_sel,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.map_voltage = regulator_map_voltage_linear_range,
|
|
.set_suspend_enable = tps65217_pmic_set_suspend_enable,
|
|
.set_suspend_disable = tps65217_pmic_set_suspend_disable,
|
|
};
|
|
|
|
/* Operations permitted on LDO1 */
|
|
static const struct regulator_ops tps65217_pmic_ldo1_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = tps65217_pmic_enable,
|
|
.disable = tps65217_pmic_disable,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = tps65217_pmic_set_voltage_sel,
|
|
.list_voltage = regulator_list_voltage_table,
|
|
.map_voltage = regulator_map_voltage_ascend,
|
|
.set_suspend_enable = tps65217_pmic_set_suspend_enable,
|
|
.set_suspend_disable = tps65217_pmic_set_suspend_disable,
|
|
};
|
|
|
|
static const struct regulator_desc regulators[] = {
|
|
TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, "dcdc1",
|
|
tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC1,
|
|
TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC1_EN,
|
|
NULL, tps65217_uv1_ranges,
|
|
ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1,
|
|
TPS65217_SEQ1_DC1_SEQ_MASK),
|
|
TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, "dcdc2",
|
|
tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC2,
|
|
TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC2_EN,
|
|
NULL, tps65217_uv1_ranges,
|
|
ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1,
|
|
TPS65217_SEQ1_DC2_SEQ_MASK),
|
|
TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, "dcdc3",
|
|
tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC3,
|
|
TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC3_EN,
|
|
NULL, tps65217_uv1_ranges,
|
|
ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ2,
|
|
TPS65217_SEQ2_DC3_SEQ_MASK),
|
|
TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, "ldo1",
|
|
tps65217_pmic_ldo1_ops, 16, TPS65217_REG_DEFLDO1,
|
|
TPS65217_DEFLDO1_LDO1_MASK, TPS65217_ENABLE_LDO1_EN,
|
|
LDO1_VSEL_table, NULL, 0, TPS65217_REG_SEQ2,
|
|
TPS65217_SEQ2_LDO1_SEQ_MASK),
|
|
TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, "ldo2", tps65217_pmic_ops,
|
|
64, TPS65217_REG_DEFLDO2,
|
|
TPS65217_DEFLDO2_LDO2_MASK, TPS65217_ENABLE_LDO2_EN,
|
|
NULL, tps65217_uv1_ranges,
|
|
ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ3,
|
|
TPS65217_SEQ3_LDO2_SEQ_MASK),
|
|
TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, "ldo3", tps65217_pmic_ops,
|
|
32, TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK,
|
|
TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,
|
|
NULL, tps65217_uv2_ranges,
|
|
ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ3,
|
|
TPS65217_SEQ3_LDO3_SEQ_MASK),
|
|
TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, "ldo4", tps65217_pmic_ops,
|
|
32, TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK,
|
|
TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,
|
|
NULL, tps65217_uv2_ranges,
|
|
ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ4,
|
|
TPS65217_SEQ4_LDO4_SEQ_MASK),
|
|
};
|
|
|
|
static int tps65217_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);
|
|
struct tps65217_board *pdata = dev_get_platdata(tps->dev);
|
|
struct regulator_dev *rdev;
|
|
struct regulator_config config = { };
|
|
int i, ret;
|
|
unsigned int val;
|
|
|
|
/* Allocate memory for strobes */
|
|
tps->strobes = devm_kcalloc(&pdev->dev,
|
|
TPS65217_NUM_REGULATOR, sizeof(u8),
|
|
GFP_KERNEL);
|
|
if (!tps->strobes)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(pdev, tps);
|
|
|
|
for (i = 0; i < TPS65217_NUM_REGULATOR; i++) {
|
|
/* Register the regulators */
|
|
config.dev = tps->dev;
|
|
if (pdata)
|
|
config.init_data = pdata->tps65217_init_data[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);
|
|
}
|
|
|
|
/* Store default strobe info */
|
|
ret = tps65217_reg_read(tps, regulators[i].bypass_reg, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
tps->strobes[i] = val & regulators[i].bypass_mask;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver tps65217_regulator_driver = {
|
|
.driver = {
|
|
.name = "tps65217-pmic",
|
|
},
|
|
.probe = tps65217_regulator_probe,
|
|
};
|
|
|
|
static int __init tps65217_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&tps65217_regulator_driver);
|
|
}
|
|
subsys_initcall(tps65217_regulator_init);
|
|
|
|
static void __exit tps65217_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&tps65217_regulator_driver);
|
|
}
|
|
module_exit(tps65217_regulator_exit);
|
|
|
|
MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
|
|
MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
|
|
MODULE_ALIAS("platform:tps65217-pmic");
|
|
MODULE_LICENSE("GPL v2");
|