mirror of https://gitee.com/openkylin/linux.git
372 lines
12 KiB
C
372 lines
12 KiB
C
/*
|
|
* tps65218-regulator.c
|
|
*
|
|
* Regulator driver for TPS65218 PMIC
|
|
*
|
|
* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
|
* kind, whether expressed or implied; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License version 2 for more details.
|
|
*/
|
|
|
|
#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/tps65218.h>
|
|
|
|
#define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
|
|
_em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm) \
|
|
{ \
|
|
.name = _name, \
|
|
.of_match = _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, \
|
|
.enable_reg = _er, \
|
|
.enable_mask = _em, \
|
|
.volt_table = NULL, \
|
|
.linear_ranges = _lr, \
|
|
.n_linear_ranges = _nlr, \
|
|
.ramp_delay = _delay, \
|
|
.fixed_uV = _fuv, \
|
|
.bypass_reg = _sr, \
|
|
.bypass_mask = _sm, \
|
|
} \
|
|
|
|
static const struct regulator_linear_range dcdc1_dcdc2_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
|
|
REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
|
|
};
|
|
|
|
static const struct regulator_linear_range ldo1_dcdc3_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
|
|
REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
|
|
};
|
|
|
|
static const struct regulator_linear_range dcdc4_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
|
|
REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000),
|
|
};
|
|
|
|
static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
|
|
unsigned selector)
|
|
{
|
|
int ret;
|
|
struct tps65218 *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 = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
|
|
selector, TPS65218_PROTECT_L1);
|
|
|
|
/* Set GO bit for DCDC1/2 to initiate voltage transistion */
|
|
switch (rid) {
|
|
case TPS65218_DCDC_1:
|
|
case TPS65218_DCDC_2:
|
|
ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
|
|
TPS65218_SLEW_RATE_GO,
|
|
TPS65218_SLEW_RATE_GO,
|
|
TPS65218_PROTECT_L1);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tps65218_pmic_enable(struct regulator_dev *dev)
|
|
{
|
|
struct tps65218 *tps = rdev_get_drvdata(dev);
|
|
int rid = rdev_get_id(dev);
|
|
|
|
if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
|
|
return -EINVAL;
|
|
|
|
/* Enable the regulator and password protection is level 1 */
|
|
return tps65218_set_bits(tps, dev->desc->enable_reg,
|
|
dev->desc->enable_mask, dev->desc->enable_mask,
|
|
TPS65218_PROTECT_L1);
|
|
}
|
|
|
|
static int tps65218_pmic_disable(struct regulator_dev *dev)
|
|
{
|
|
struct tps65218 *tps = rdev_get_drvdata(dev);
|
|
int rid = rdev_get_id(dev);
|
|
|
|
if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
|
|
return -EINVAL;
|
|
|
|
/* Disable the regulator and password protection is level 1 */
|
|
return tps65218_clear_bits(tps, dev->desc->enable_reg,
|
|
dev->desc->enable_mask, TPS65218_PROTECT_L1);
|
|
}
|
|
|
|
static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev)
|
|
{
|
|
struct tps65218 *tps = rdev_get_drvdata(dev);
|
|
unsigned int rid = rdev_get_id(dev);
|
|
|
|
if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
|
|
return -EINVAL;
|
|
|
|
return tps65218_clear_bits(tps, dev->desc->bypass_reg,
|
|
dev->desc->bypass_mask,
|
|
TPS65218_PROTECT_L1);
|
|
}
|
|
|
|
static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
|
|
{
|
|
struct tps65218 *tps = rdev_get_drvdata(dev);
|
|
unsigned int rid = rdev_get_id(dev);
|
|
|
|
if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Certain revisions of TPS65218 will need to have DCDC3 regulator
|
|
* enabled always, otherwise an immediate system reboot will occur
|
|
* during poweroff.
|
|
*/
|
|
if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
|
|
return 0;
|
|
|
|
if (!tps->strobes[rid]) {
|
|
if (rid == TPS65218_DCDC_3)
|
|
tps->strobes[rid] = 3;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
return tps65218_set_bits(tps, dev->desc->bypass_reg,
|
|
dev->desc->bypass_mask,
|
|
tps->strobes[rid], TPS65218_PROTECT_L1);
|
|
}
|
|
|
|
/* Operations permitted on DCDC1, DCDC2 */
|
|
static struct regulator_ops tps65218_dcdc12_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = tps65218_pmic_enable,
|
|
.disable = tps65218_pmic_disable,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = tps65218_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,
|
|
.set_suspend_enable = tps65218_pmic_set_suspend_enable,
|
|
.set_suspend_disable = tps65218_pmic_set_suspend_disable,
|
|
};
|
|
|
|
/* Operations permitted on DCDC3, DCDC4 and LDO1 */
|
|
static struct regulator_ops tps65218_ldo1_dcdc34_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = tps65218_pmic_enable,
|
|
.disable = tps65218_pmic_disable,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = tps65218_pmic_set_voltage_sel,
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
.map_voltage = regulator_map_voltage_linear_range,
|
|
.set_suspend_enable = tps65218_pmic_set_suspend_enable,
|
|
.set_suspend_disable = tps65218_pmic_set_suspend_disable,
|
|
};
|
|
|
|
static const int ls3_currents[] = { 100, 200, 500, 1000 };
|
|
|
|
static int tps65218_pmic_set_input_current_lim(struct regulator_dev *dev,
|
|
int lim_uA)
|
|
{
|
|
unsigned int index = 0;
|
|
unsigned int num_currents = ARRAY_SIZE(ls3_currents);
|
|
struct tps65218 *tps = rdev_get_drvdata(dev);
|
|
|
|
while (index < num_currents && ls3_currents[index] != lim_uA)
|
|
index++;
|
|
|
|
if (index == num_currents)
|
|
return -EINVAL;
|
|
|
|
return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
|
|
index << 2, TPS65218_PROTECT_L1);
|
|
}
|
|
|
|
static int tps65218_pmic_set_current_limit(struct regulator_dev *dev,
|
|
int min_uA, int max_uA)
|
|
{
|
|
int index = 0;
|
|
unsigned int num_currents = ARRAY_SIZE(ls3_currents);
|
|
struct tps65218 *tps = rdev_get_drvdata(dev);
|
|
|
|
while (index < num_currents && ls3_currents[index] < max_uA)
|
|
index++;
|
|
|
|
index--;
|
|
|
|
if (index < 0 || ls3_currents[index] < min_uA)
|
|
return -EINVAL;
|
|
|
|
return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
|
|
index << 2, TPS65218_PROTECT_L1);
|
|
}
|
|
|
|
static int tps65218_pmic_get_current_limit(struct regulator_dev *dev)
|
|
{
|
|
int retval;
|
|
unsigned int index;
|
|
struct tps65218 *tps = rdev_get_drvdata(dev);
|
|
|
|
retval = regmap_read(tps->regmap, dev->desc->csel_reg, &index);
|
|
if (retval < 0)
|
|
return retval;
|
|
|
|
index = (index & dev->desc->csel_mask) >> 2;
|
|
|
|
return ls3_currents[index];
|
|
}
|
|
|
|
static struct regulator_ops tps65218_ls3_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = tps65218_pmic_enable,
|
|
.disable = tps65218_pmic_disable,
|
|
.set_input_current_limit = tps65218_pmic_set_input_current_lim,
|
|
.set_current_limit = tps65218_pmic_set_current_limit,
|
|
.get_current_limit = tps65218_pmic_get_current_limit,
|
|
};
|
|
|
|
/* Operations permitted on DCDC5, DCDC6 */
|
|
static struct regulator_ops tps65218_dcdc56_pmic_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = tps65218_pmic_enable,
|
|
.disable = tps65218_pmic_disable,
|
|
.set_suspend_enable = tps65218_pmic_set_suspend_enable,
|
|
.set_suspend_disable = tps65218_pmic_set_suspend_disable,
|
|
};
|
|
|
|
static const struct regulator_desc regulators[] = {
|
|
TPS65218_REGULATOR("DCDC1", "regulator-dcdc1", TPS65218_DCDC_1,
|
|
REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
|
|
TPS65218_REG_CONTROL_DCDC1,
|
|
TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1,
|
|
TPS65218_ENABLE1_DC1_EN, 0, 0, dcdc1_dcdc2_ranges,
|
|
2, 4000, 0, TPS65218_REG_SEQ3,
|
|
TPS65218_SEQ3_DC1_SEQ_MASK),
|
|
TPS65218_REGULATOR("DCDC2", "regulator-dcdc2", TPS65218_DCDC_2,
|
|
REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
|
|
TPS65218_REG_CONTROL_DCDC2,
|
|
TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1,
|
|
TPS65218_ENABLE1_DC2_EN, 0, 0, dcdc1_dcdc2_ranges,
|
|
2, 4000, 0, TPS65218_REG_SEQ3,
|
|
TPS65218_SEQ3_DC2_SEQ_MASK),
|
|
TPS65218_REGULATOR("DCDC3", "regulator-dcdc3", TPS65218_DCDC_3,
|
|
REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
|
|
TPS65218_REG_CONTROL_DCDC3,
|
|
TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
|
|
TPS65218_ENABLE1_DC3_EN, 0, 0, ldo1_dcdc3_ranges, 2,
|
|
0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC3_SEQ_MASK),
|
|
TPS65218_REGULATOR("DCDC4", "regulator-dcdc4", TPS65218_DCDC_4,
|
|
REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 53,
|
|
TPS65218_REG_CONTROL_DCDC4,
|
|
TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1,
|
|
TPS65218_ENABLE1_DC4_EN, 0, 0, dcdc4_ranges, 2,
|
|
0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC4_SEQ_MASK),
|
|
TPS65218_REGULATOR("DCDC5", "regulator-dcdc5", TPS65218_DCDC_5,
|
|
REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
|
|
-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, 0,
|
|
0, NULL, 0, 0, 1000000, TPS65218_REG_SEQ5,
|
|
TPS65218_SEQ5_DC5_SEQ_MASK),
|
|
TPS65218_REGULATOR("DCDC6", "regulator-dcdc6", TPS65218_DCDC_6,
|
|
REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
|
|
-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, 0,
|
|
0, NULL, 0, 0, 1800000, TPS65218_REG_SEQ5,
|
|
TPS65218_SEQ5_DC6_SEQ_MASK),
|
|
TPS65218_REGULATOR("LDO1", "regulator-ldo1", TPS65218_LDO_1,
|
|
REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
|
|
TPS65218_REG_CONTROL_LDO1,
|
|
TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
|
|
TPS65218_ENABLE2_LDO1_EN, 0, 0, ldo1_dcdc3_ranges,
|
|
2, 0, 0, TPS65218_REG_SEQ6,
|
|
TPS65218_SEQ6_LDO1_SEQ_MASK),
|
|
TPS65218_REGULATOR("LS3", "regulator-ls3", TPS65218_LS_3,
|
|
REGULATOR_CURRENT, tps65218_ls3_ops, 0, 0, 0,
|
|
TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS3_EN,
|
|
TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS3ILIM_MASK,
|
|
NULL, 0, 0, 0, 0, 0),
|
|
};
|
|
|
|
static int tps65218_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
|
|
struct regulator_dev *rdev;
|
|
struct regulator_config config = { };
|
|
int i, ret;
|
|
unsigned int val;
|
|
|
|
config.dev = &pdev->dev;
|
|
config.dev->of_node = tps->dev->of_node;
|
|
config.driver_data = tps;
|
|
config.regmap = tps->regmap;
|
|
|
|
/* Allocate memory for strobes */
|
|
tps->strobes = devm_kcalloc(&pdev->dev,
|
|
TPS65218_NUM_REGULATOR, sizeof(u8),
|
|
GFP_KERNEL);
|
|
if (!tps->strobes)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(regulators); 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)
|
|
return ret;
|
|
|
|
tps->strobes[i] = val & regulators[i].bypass_mask;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct platform_device_id tps65218_regulator_id_table[] = {
|
|
{ "tps65218-regulator", },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(platform, tps65218_regulator_id_table);
|
|
|
|
static struct platform_driver tps65218_regulator_driver = {
|
|
.driver = {
|
|
.name = "tps65218-pmic",
|
|
},
|
|
.probe = tps65218_regulator_probe,
|
|
.id_table = tps65218_regulator_id_table,
|
|
};
|
|
|
|
module_platform_driver(tps65218_regulator_driver);
|
|
|
|
MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
|
|
MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
|
|
MODULE_ALIAS("platform:tps65218-pmic");
|
|
MODULE_LICENSE("GPL v2");
|