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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Regulators driver for Marvell 88PM8004 *5 * Copyright (C) 2012 Marvell International Ltd.6 * Joseph(Yossi) Hanin <yhanin@marvell.com>7 * Yi Zhang <yizhang@marvell.com>8 */9#include <linux/module.h>10#include <linux/moduleparam.h>11#include <linux/init.h>12#include <linux/err.h>13#include <linux/regmap.h>14#include <linux/regulator/driver.h>15#include <linux/regulator/machine.h>16#include <linux/mfd/88pm80x.h>17#include <linux/delay.h>18#include <linux/io.h>19#include <linux/of.h>20#include <linux/regulator/of_regulator.h>21 22/* LDO1 with DVC[0..3] */23#define PM800_LDO1_VOUT (0x08) /* VOUT1 */24#define PM800_LDO1_VOUT_2 (0x09)25#define PM800_LDO1_VOUT_3 (0x0A)26#define PM800_LDO2_VOUT (0x0B)27#define PM800_LDO3_VOUT (0x0C)28#define PM800_LDO4_VOUT (0x0D)29#define PM800_LDO5_VOUT (0x0E)30#define PM800_LDO6_VOUT (0x0F)31#define PM800_LDO7_VOUT (0x10)32#define PM800_LDO8_VOUT (0x11)33#define PM800_LDO9_VOUT (0x12)34#define PM800_LDO10_VOUT (0x13)35#define PM800_LDO11_VOUT (0x14)36#define PM800_LDO12_VOUT (0x15)37#define PM800_LDO13_VOUT (0x16)38#define PM800_LDO14_VOUT (0x17)39#define PM800_LDO15_VOUT (0x18)40#define PM800_LDO16_VOUT (0x19)41#define PM800_LDO17_VOUT (0x1A)42#define PM800_LDO18_VOUT (0x1B)43#define PM800_LDO19_VOUT (0x1C)44 45/* BUCK1 with DVC[0..3] */46#define PM800_BUCK1 (0x3C)47#define PM800_BUCK1_1 (0x3D)48#define PM800_BUCK1_2 (0x3E)49#define PM800_BUCK1_3 (0x3F)50#define PM800_BUCK2 (0x40)51#define PM800_BUCK3 (0x41)52#define PM800_BUCK4 (0x42)53#define PM800_BUCK4_1 (0x43)54#define PM800_BUCK4_2 (0x44)55#define PM800_BUCK4_3 (0x45)56#define PM800_BUCK5 (0x46)57 58#define PM800_BUCK_ENA (0x50)59#define PM800_LDO_ENA1_1 (0x51)60#define PM800_LDO_ENA1_2 (0x52)61#define PM800_LDO_ENA1_3 (0x53)62 63#define PM800_LDO_ENA2_1 (0x56)64#define PM800_LDO_ENA2_2 (0x57)65#define PM800_LDO_ENA2_3 (0x58)66 67#define PM800_BUCK1_MISC1 (0x78)68#define PM800_BUCK3_MISC1 (0x7E)69#define PM800_BUCK4_MISC1 (0x81)70#define PM800_BUCK5_MISC1 (0x84)71 72struct pm800_regulator_info {73 struct regulator_desc desc;74 int max_ua;75};76 77/*78 * vreg - the buck regs string.79 * ereg - the string for the enable register.80 * ebit - the bit number in the enable register.81 * amax - the current82 * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges,83 * not the constant voltage table.84 * n_volt - Number of available selectors85 */86#define PM800_BUCK(match, vreg, ereg, ebit, amax, volt_ranges, n_volt) \87{ \88 .desc = { \89 .name = #vreg, \90 .of_match = of_match_ptr(#match), \91 .regulators_node = of_match_ptr("regulators"), \92 .ops = &pm800_volt_range_ops, \93 .type = REGULATOR_VOLTAGE, \94 .id = PM800_ID_##vreg, \95 .owner = THIS_MODULE, \96 .n_voltages = n_volt, \97 .linear_ranges = volt_ranges, \98 .n_linear_ranges = ARRAY_SIZE(volt_ranges), \99 .vsel_reg = PM800_##vreg, \100 .vsel_mask = 0x7f, \101 .enable_reg = PM800_##ereg, \102 .enable_mask = 1 << (ebit), \103 }, \104 .max_ua = (amax), \105}106 107/*108 * vreg - the LDO regs string109 * ereg - the string for the enable register.110 * ebit - the bit number in the enable register.111 * amax - the current112 * volt_table - the LDO voltage table113 * For all the LDOes, there are too many ranges. Using volt_table will be114 * simpler and faster.115 */116#define PM800_LDO(match, vreg, ereg, ebit, amax, ldo_volt_table) \117{ \118 .desc = { \119 .name = #vreg, \120 .of_match = of_match_ptr(#match), \121 .regulators_node = of_match_ptr("regulators"), \122 .ops = &pm800_volt_table_ops, \123 .type = REGULATOR_VOLTAGE, \124 .id = PM800_ID_##vreg, \125 .owner = THIS_MODULE, \126 .n_voltages = ARRAY_SIZE(ldo_volt_table), \127 .vsel_reg = PM800_##vreg##_VOUT, \128 .vsel_mask = 0xf, \129 .enable_reg = PM800_##ereg, \130 .enable_mask = 1 << (ebit), \131 .volt_table = ldo_volt_table, \132 }, \133 .max_ua = (amax), \134}135 136/* Ranges are sorted in ascending order. */137static const struct linear_range buck1_volt_range[] = {138 REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500),139 REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x54, 50000),140};141 142/* BUCK 2~5 have same ranges. */143static const struct linear_range buck2_5_volt_range[] = {144 REGULATOR_LINEAR_RANGE(600000, 0, 0x4f, 12500),145 REGULATOR_LINEAR_RANGE(1600000, 0x50, 0x72, 50000),146};147 148static const unsigned int ldo1_volt_table[] = {149 600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000,150 1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000,151};152 153static const unsigned int ldo2_volt_table[] = {154 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000,155};156 157/* LDO 3~17 have same voltage table. */158static const unsigned int ldo3_17_volt_table[] = {159 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000,160 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000,161};162 163/* LDO 18~19 have same voltage table. */164static const unsigned int ldo18_19_volt_table[] = {165 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000,166};167 168static int pm800_get_current_limit(struct regulator_dev *rdev)169{170 struct pm800_regulator_info *info = rdev_get_drvdata(rdev);171 172 return info->max_ua;173}174 175static const struct regulator_ops pm800_volt_range_ops = {176 .list_voltage = regulator_list_voltage_linear_range,177 .map_voltage = regulator_map_voltage_linear_range,178 .set_voltage_sel = regulator_set_voltage_sel_regmap,179 .get_voltage_sel = regulator_get_voltage_sel_regmap,180 .enable = regulator_enable_regmap,181 .disable = regulator_disable_regmap,182 .is_enabled = regulator_is_enabled_regmap,183 .get_current_limit = pm800_get_current_limit,184};185 186static const struct regulator_ops pm800_volt_table_ops = {187 .list_voltage = regulator_list_voltage_table,188 .map_voltage = regulator_map_voltage_iterate,189 .set_voltage_sel = regulator_set_voltage_sel_regmap,190 .get_voltage_sel = regulator_get_voltage_sel_regmap,191 .enable = regulator_enable_regmap,192 .disable = regulator_disable_regmap,193 .is_enabled = regulator_is_enabled_regmap,194 .get_current_limit = pm800_get_current_limit,195};196 197/* The array is indexed by id(PM800_ID_XXX) */198static struct pm800_regulator_info pm800_regulator_info[] = {199 PM800_BUCK(buck1, BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55),200 PM800_BUCK(buck2, BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73),201 PM800_BUCK(buck3, BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73),202 PM800_BUCK(buck4, BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73),203 PM800_BUCK(buck5, BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73),204 205 PM800_LDO(ldo1, LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table),206 PM800_LDO(ldo2, LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table),207 PM800_LDO(ldo3, LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table),208 PM800_LDO(ldo4, LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table),209 PM800_LDO(ldo5, LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table),210 PM800_LDO(ldo6, LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table),211 PM800_LDO(ldo7, LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table),212 PM800_LDO(ldo8, LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table),213 PM800_LDO(ldo9, LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table),214 PM800_LDO(ldo10, LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table),215 PM800_LDO(ldo11, LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table),216 PM800_LDO(ldo12, LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table),217 PM800_LDO(ldo13, LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table),218 PM800_LDO(ldo14, LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table),219 PM800_LDO(ldo15, LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table),220 PM800_LDO(ldo16, LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table),221 PM800_LDO(ldo17, LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table),222 PM800_LDO(ldo18, LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table),223 PM800_LDO(ldo19, LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table),224};225 226static int pm800_regulator_probe(struct platform_device *pdev)227{228 struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);229 struct pm80x_platform_data *pdata = dev_get_platdata(pdev->dev.parent);230 struct regulator_config config = { };231 struct regulator_init_data *init_data;232 int i, ret;233 234 if (pdata && pdata->num_regulators) {235 unsigned int count = 0;236 237 /* Check whether num_regulator is valid. */238 for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) {239 if (pdata->regulators[i])240 count++;241 }242 if (count != pdata->num_regulators)243 return -EINVAL;244 }245 246 config.dev = chip->dev;247 config.regmap = chip->subchip->regmap_power;248 for (i = 0; i < PM800_ID_RG_MAX; i++) {249 struct regulator_dev *regulator;250 251 if (pdata && pdata->num_regulators) {252 init_data = pdata->regulators[i];253 if (!init_data)254 continue;255 256 config.init_data = init_data;257 }258 259 config.driver_data = &pm800_regulator_info[i];260 261 regulator = devm_regulator_register(&pdev->dev,262 &pm800_regulator_info[i].desc, &config);263 if (IS_ERR(regulator)) {264 ret = PTR_ERR(regulator);265 dev_err(&pdev->dev, "Failed to register %s\n",266 pm800_regulator_info[i].desc.name);267 return ret;268 }269 }270 271 return 0;272}273 274static struct platform_driver pm800_regulator_driver = {275 .driver = {276 .name = "88pm80x-regulator",277 .probe_type = PROBE_PREFER_ASYNCHRONOUS,278 },279 .probe = pm800_regulator_probe,280};281 282module_platform_driver(pm800_regulator_driver);283 284MODULE_LICENSE("GPL");285MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>");286MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC");287MODULE_ALIAS("platform:88pm800-regulator");288