// SPDX-License-Identifier: GPL-2.0-only
/*
* Regulators driver for Marvell 88PM800
*
* Copyright (C) 2012 Marvell International Ltd.
* Joseph(Yossi) Hanin <yhanin@marvell.com>
* Yi Zhang <yizhang@marvell.com>
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/88 pm80x.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/regulator/of_regulator.h>
/* LDO1 with DVC[0..3] */
#define PM800_LDO1_VOUT (0 x08) /* VOUT1 */
#define PM800_LDO1_VOUT_2 (0 x09)
#define PM800_LDO1_VOUT_3 (0 x0A)
#define PM800_LDO2_VOUT (0 x0B)
#define PM800_LDO3_VOUT (0 x0C)
#define PM800_LDO4_VOUT (0 x0D)
#define PM800_LDO5_VOUT (0 x0E)
#define PM800_LDO6_VOUT (0 x0F)
#define PM800_LDO7_VOUT (0 x10)
#define PM800_LDO8_VOUT (0 x11)
#define PM800_LDO9_VOUT (0 x12)
#define PM800_LDO10_VOUT (0 x13)
#define PM800_LDO11_VOUT (0 x14)
#define PM800_LDO12_VOUT (0 x15)
#define PM800_LDO13_VOUT (0 x16)
#define PM800_LDO14_VOUT (0 x17)
#define PM800_LDO15_VOUT (0 x18)
#define PM800_LDO16_VOUT (0 x19)
#define PM800_LDO17_VOUT (0 x1A)
#define PM800_LDO18_VOUT (0 x1B)
#define PM800_LDO19_VOUT (0 x1C)
/* BUCK1 with DVC[0..3] */
#define PM800_BUCK1 (0 x3C)
#define PM800_BUCK1_1 (0 x3D)
#define PM800_BUCK1_2 (0 x3E)
#define PM800_BUCK1_3 (0 x3F)
#define PM800_BUCK2 (0 x40)
#define PM800_BUCK3 (0 x41)
#define PM800_BUCK4 (0 x42)
#define PM800_BUCK4_1 (0 x43)
#define PM800_BUCK4_2 (0 x44)
#define PM800_BUCK4_3 (0 x45)
#define PM800_BUCK5 (0 x46)
#define PM800_BUCK_ENA (0 x50)
#define PM800_LDO_ENA1_1 (0 x51)
#define PM800_LDO_ENA1_2 (0 x52)
#define PM800_LDO_ENA1_3 (0 x53)
#define PM800_LDO_ENA2_1 (0 x56)
#define PM800_LDO_ENA2_2 (0 x57)
#define PM800_LDO_ENA2_3 (0 x58)
#define PM800_BUCK1_MISC1 (0 x78)
#define PM800_BUCK3_MISC1 (0 x7E)
#define PM800_BUCK4_MISC1 (0 x81)
#define PM800_BUCK5_MISC1 (0 x84)
struct pm800_regulator_info {
struct regulator_desc desc;
int max_ua;
};
/*
* vreg - the buck regs string.
* ereg - the string for the enable register.
* ebit - the bit number in the enable register.
* amax - the current
* Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges,
* not the constant voltage table.
* n_volt - Number of available selectors
*/
#define PM800_BUCK(match, vreg, ereg, ebit, amax, volt_ranges, n_volt) \
{ \
.desc = { \
.name = #vreg , \
.of_match = of_match_ptr(#match ), \
.regulators_node = of_match_ptr("regulators" ), \
.ops = &pm800_volt_range_ops, \
.type = REGULATOR_VOLTAGE, \
.id = PM800_ID_## vreg, \
.owner = THIS_MODULE, \
.n_voltages = n_volt, \
.linear_ranges = volt_ranges, \
.n_linear_ranges = ARRAY_SIZE(volt_ranges), \
.vsel_reg = PM800_## vreg, \
.vsel_mask = 0 x7f, \
.enable_reg = PM800_## ereg, \
.enable_mask = 1 << (ebit), \
}, \
.max_ua = (amax), \
}
/*
* vreg - the LDO regs string
* ereg - the string for the enable register.
* ebit - the bit number in the enable register.
* amax - the current
* volt_table - the LDO voltage table
* For all the LDOes, there are too many ranges. Using volt_table will be
* simpler and faster.
*/
#define PM800_LDO(match, vreg, ereg, ebit, amax, ldo_volt_table) \
{ \
.desc = { \
.name = #vreg , \
.of_match = of_match_ptr(#match ), \
.regulators_node = of_match_ptr("regulators" ), \
.ops = &pm800_volt_table_ops, \
.type = REGULATOR_VOLTAGE, \
.id = PM800_ID_## vreg, \
.owner = THIS_MODULE, \
.n_voltages = ARRAY_SIZE(ldo_volt_table), \
.vsel_reg = PM800_## vreg## _VOUT, \
.vsel_mask = 0 xf, \
.enable_reg = PM800_## ereg, \
.enable_mask = 1 << (ebit), \
.volt_table = ldo_volt_table, \
}, \
.max_ua = (amax), \
}
/* Ranges are sorted in ascending order. */
static const struct linear_range buck1_volt_range[] = {
REGULATOR_LINEAR_RANGE(600000 , 0 , 0 x4f, 12500 ),
REGULATOR_LINEAR_RANGE(1600000 , 0 x50, 0 x54, 50000 ),
};
/* BUCK 2~5 have same ranges. */
static const struct linear_range buck2_5_volt_range[] = {
REGULATOR_LINEAR_RANGE(600000 , 0 , 0 x4f, 12500 ),
REGULATOR_LINEAR_RANGE(1600000 , 0 x50, 0 x72, 50000 ),
};
static const unsigned int ldo1_volt_table[] = {
600000 , 650000 , 700000 , 750000 , 800000 , 850000 , 900000 , 950000 ,
1000000 , 1050000 , 1100000 , 1150000 , 1200000 , 1300000 , 1400000 , 1500000 ,
};
static const unsigned int ldo2_volt_table[] = {
1700000 , 1800000 , 1900000 , 2000000 , 2100000 , 2500000 , 2700000 , 2800000 ,
};
/* LDO 3~17 have same voltage table. */
static const unsigned int ldo3_17_volt_table[] = {
1200000 , 1250000 , 1700000 , 1800000 , 1850000 , 1900000 , 2500000 , 2600000 ,
2700000 , 2750000 , 2800000 , 2850000 , 2900000 , 3000000 , 3100000 , 3300000 ,
};
/* LDO 18~19 have same voltage table. */
static const unsigned int ldo18_19_volt_table[] = {
1700000 , 1800000 , 1900000 , 2500000 , 2800000 , 2900000 , 3100000 , 3300000 ,
};
static int pm800_get_current_limit(struct regulator_dev *rdev)
{
struct pm800_regulator_info *info = rdev_get_drvdata(rdev);
return info->max_ua;
}
static const struct regulator_ops pm800_volt_range_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.get_current_limit = pm800_get_current_limit,
};
static const struct regulator_ops pm800_volt_table_ops = {
.list_voltage = regulator_list_voltage_table,
.map_voltage = regulator_map_voltage_iterate,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.get_current_limit = pm800_get_current_limit,
};
/* The array is indexed by id(PM800_ID_XXX) */
static struct pm800_regulator_info pm800_regulator_info[] = {
PM800_BUCK(buck1, BUCK1, BUCK_ENA, 0 , 3000000 , buck1_volt_range, 0 x55),
PM800_BUCK(buck2, BUCK2, BUCK_ENA, 1 , 1200000 , buck2_5_volt_range, 0 x73),
PM800_BUCK(buck3, BUCK3, BUCK_ENA, 2 , 1200000 , buck2_5_volt_range, 0 x73),
PM800_BUCK(buck4, BUCK4, BUCK_ENA, 3 , 1200000 , buck2_5_volt_range, 0 x73),
PM800_BUCK(buck5, BUCK5, BUCK_ENA, 4 , 1200000 , buck2_5_volt_range, 0 x73),
PM800_LDO(ldo1, LDO1, LDO_ENA1_1, 0 , 200000 , ldo1_volt_table),
PM800_LDO(ldo2, LDO2, LDO_ENA1_1, 1 , 10000 , ldo2_volt_table),
PM800_LDO(ldo3, LDO3, LDO_ENA1_1, 2 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo4, LDO4, LDO_ENA1_1, 3 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo5, LDO5, LDO_ENA1_1, 4 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo6, LDO6, LDO_ENA1_1, 5 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo7, LDO7, LDO_ENA1_1, 6 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo8, LDO8, LDO_ENA1_1, 7 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo9, LDO9, LDO_ENA1_2, 0 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo10, LDO10, LDO_ENA1_2, 1 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo11, LDO11, LDO_ENA1_2, 2 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo12, LDO12, LDO_ENA1_2, 3 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo13, LDO13, LDO_ENA1_2, 4 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo14, LDO14, LDO_ENA1_2, 5 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo15, LDO15, LDO_ENA1_2, 6 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo16, LDO16, LDO_ENA1_2, 7 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo17, LDO17, LDO_ENA1_3, 0 , 300000 , ldo3_17_volt_table),
PM800_LDO(ldo18, LDO18, LDO_ENA1_3, 1 , 200000 , ldo18_19_volt_table),
PM800_LDO(ldo19, LDO19, LDO_ENA1_3, 2 , 200000 , ldo18_19_volt_table),
};
static int pm800_regulator_probe(struct platform_device *pdev)
{
struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent);
struct regulator_config config = { };
struct regulator_init_data *init_data;
int i, ret;
if (pdata && pdata->num_regulators) {
unsigned int count = 0 ;
/* Check whether num_regulator is valid. */
for (i = 0 ; i < ARRAY_SIZE(pdata->regulators); i++) {
if (pdata->regulators[i])
count++;
}
if (count != pdata->num_regulators)
return -EINVAL;
}
config.dev = chip->dev;
config.regmap = chip->subchip->regmap_power;
for (i = 0 ; i < PM800_ID_RG_MAX; i++) {
struct regulator_dev *regulator;
if (pdata && pdata->num_regulators) {
init_data = pdata->regulators[i];
if (!init_data)
continue ;
config.init_data = init_data;
}
config.driver_data = &pm800_regulator_info[i];
regulator = devm_regulator_register(&pdev->dev,
&pm800_regulator_info[i].desc, &config);
if (IS_ERR(regulator)) {
ret = PTR_ERR(regulator);
dev_err(&pdev->dev, "Failed to register %s\n" ,
pm800_regulator_info[i].desc.name);
return ret;
}
}
return 0 ;
}
static struct platform_driver pm800_regulator_driver = {
.driver = {
.name = "88pm80x-regulator" ,
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.probe = pm800_regulator_probe,
};
module_platform_driver(pm800_regulator_driver);
MODULE_LICENSE("GPL" );
MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>" );
MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC" );
MODULE_ALIAS("platform:88pm800-regulator" );
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