bcm590xx-regulator.c (10351B)
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Broadcom BCM590xx regulator driver 4 * 5 * Copyright 2014 Linaro Limited 6 * Author: Matt Porter <mporter@linaro.org> 7 */ 8 9#include <linux/err.h> 10#include <linux/init.h> 11#include <linux/kernel.h> 12#include <linux/mfd/bcm590xx.h> 13#include <linux/module.h> 14#include <linux/of.h> 15#include <linux/platform_device.h> 16#include <linux/regulator/driver.h> 17#include <linux/regulator/machine.h> 18#include <linux/regulator/of_regulator.h> 19#include <linux/slab.h> 20 21/* I2C slave 0 registers */ 22#define BCM590XX_RFLDOPMCTRL1 0x60 23#define BCM590XX_IOSR1PMCTRL1 0x7a 24#define BCM590XX_IOSR2PMCTRL1 0x7c 25#define BCM590XX_CSRPMCTRL1 0x7e 26#define BCM590XX_SDSR1PMCTRL1 0x82 27#define BCM590XX_SDSR2PMCTRL1 0x86 28#define BCM590XX_MSRPMCTRL1 0x8a 29#define BCM590XX_VSRPMCTRL1 0x8e 30#define BCM590XX_RFLDOCTRL 0x96 31#define BCM590XX_CSRVOUT1 0xc0 32 33/* I2C slave 1 registers */ 34#define BCM590XX_GPLDO5PMCTRL1 0x16 35#define BCM590XX_GPLDO6PMCTRL1 0x18 36#define BCM590XX_GPLDO1CTRL 0x1a 37#define BCM590XX_GPLDO2CTRL 0x1b 38#define BCM590XX_GPLDO3CTRL 0x1c 39#define BCM590XX_GPLDO4CTRL 0x1d 40#define BCM590XX_GPLDO5CTRL 0x1e 41#define BCM590XX_GPLDO6CTRL 0x1f 42#define BCM590XX_OTG_CTRL 0x40 43#define BCM590XX_GPLDO1PMCTRL1 0x57 44#define BCM590XX_GPLDO2PMCTRL1 0x59 45#define BCM590XX_GPLDO3PMCTRL1 0x5b 46#define BCM590XX_GPLDO4PMCTRL1 0x5d 47 48#define BCM590XX_REG_ENABLE BIT(7) 49#define BCM590XX_VBUS_ENABLE BIT(2) 50#define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3) 51#define BCM590XX_SR_VSEL_MASK GENMASK(5, 0) 52 53/* 54 * RFLDO to VSR regulators are 55 * accessed via I2C slave 0 56 */ 57 58/* LDO regulator IDs */ 59#define BCM590XX_REG_RFLDO 0 60#define BCM590XX_REG_CAMLDO1 1 61#define BCM590XX_REG_CAMLDO2 2 62#define BCM590XX_REG_SIMLDO1 3 63#define BCM590XX_REG_SIMLDO2 4 64#define BCM590XX_REG_SDLDO 5 65#define BCM590XX_REG_SDXLDO 6 66#define BCM590XX_REG_MMCLDO1 7 67#define BCM590XX_REG_MMCLDO2 8 68#define BCM590XX_REG_AUDLDO 9 69#define BCM590XX_REG_MICLDO 10 70#define BCM590XX_REG_USBLDO 11 71#define BCM590XX_REG_VIBLDO 12 72 73/* DCDC regulator IDs */ 74#define BCM590XX_REG_CSR 13 75#define BCM590XX_REG_IOSR1 14 76#define BCM590XX_REG_IOSR2 15 77#define BCM590XX_REG_MSR 16 78#define BCM590XX_REG_SDSR1 17 79#define BCM590XX_REG_SDSR2 18 80#define BCM590XX_REG_VSR 19 81 82/* 83 * GPLDO1 to VBUS regulators are 84 * accessed via I2C slave 1 85 */ 86 87#define BCM590XX_REG_GPLDO1 20 88#define BCM590XX_REG_GPLDO2 21 89#define BCM590XX_REG_GPLDO3 22 90#define BCM590XX_REG_GPLDO4 23 91#define BCM590XX_REG_GPLDO5 24 92#define BCM590XX_REG_GPLDO6 25 93#define BCM590XX_REG_VBUS 26 94 95#define BCM590XX_NUM_REGS 27 96 97#define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR) 98#define BCM590XX_REG_IS_GPLDO(n) \ 99 ((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS)) 100#define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS) 101 102/* LDO group A: supported voltages in microvolts */ 103static const unsigned int ldo_a_table[] = { 104 1200000, 1800000, 2500000, 2700000, 2800000, 105 2900000, 3000000, 3300000, 106}; 107 108/* LDO group C: supported voltages in microvolts */ 109static const unsigned int ldo_c_table[] = { 110 3100000, 1800000, 2500000, 2700000, 2800000, 111 2900000, 3000000, 3300000, 112}; 113 114static const unsigned int ldo_vbus[] = { 115 5000000, 116}; 117 118/* DCDC group CSR: supported voltages in microvolts */ 119static const struct linear_range dcdc_csr_ranges[] = { 120 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000), 121 REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000), 122 REGULATOR_LINEAR_RANGE(900000, 56, 63, 0), 123}; 124 125/* DCDC group IOSR1: supported voltages in microvolts */ 126static const struct linear_range dcdc_iosr1_ranges[] = { 127 REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000), 128 REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0), 129 REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0), 130 REGULATOR_LINEAR_RANGE(900000, 54, 63, 0), 131}; 132 133/* DCDC group SDSR1: supported voltages in microvolts */ 134static const struct linear_range dcdc_sdsr1_ranges[] = { 135 REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000), 136 REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0), 137 REGULATOR_LINEAR_RANGE(900000, 52, 63, 0), 138}; 139 140struct bcm590xx_info { 141 const char *name; 142 const char *vin_name; 143 u8 n_voltages; 144 const unsigned int *volt_table; 145 u8 n_linear_ranges; 146 const struct linear_range *linear_ranges; 147}; 148 149#define BCM590XX_REG_TABLE(_name, _table) \ 150 { \ 151 .name = #_name, \ 152 .n_voltages = ARRAY_SIZE(_table), \ 153 .volt_table = _table, \ 154 } 155 156#define BCM590XX_REG_RANGES(_name, _ranges) \ 157 { \ 158 .name = #_name, \ 159 .n_voltages = 64, \ 160 .n_linear_ranges = ARRAY_SIZE(_ranges), \ 161 .linear_ranges = _ranges, \ 162 } 163 164static struct bcm590xx_info bcm590xx_regs[] = { 165 BCM590XX_REG_TABLE(rfldo, ldo_a_table), 166 BCM590XX_REG_TABLE(camldo1, ldo_c_table), 167 BCM590XX_REG_TABLE(camldo2, ldo_c_table), 168 BCM590XX_REG_TABLE(simldo1, ldo_a_table), 169 BCM590XX_REG_TABLE(simldo2, ldo_a_table), 170 BCM590XX_REG_TABLE(sdldo, ldo_c_table), 171 BCM590XX_REG_TABLE(sdxldo, ldo_a_table), 172 BCM590XX_REG_TABLE(mmcldo1, ldo_a_table), 173 BCM590XX_REG_TABLE(mmcldo2, ldo_a_table), 174 BCM590XX_REG_TABLE(audldo, ldo_a_table), 175 BCM590XX_REG_TABLE(micldo, ldo_a_table), 176 BCM590XX_REG_TABLE(usbldo, ldo_a_table), 177 BCM590XX_REG_TABLE(vibldo, ldo_c_table), 178 BCM590XX_REG_RANGES(csr, dcdc_csr_ranges), 179 BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges), 180 BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges), 181 BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges), 182 BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges), 183 BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges), 184 BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges), 185 BCM590XX_REG_TABLE(gpldo1, ldo_a_table), 186 BCM590XX_REG_TABLE(gpldo2, ldo_a_table), 187 BCM590XX_REG_TABLE(gpldo3, ldo_a_table), 188 BCM590XX_REG_TABLE(gpldo4, ldo_a_table), 189 BCM590XX_REG_TABLE(gpldo5, ldo_a_table), 190 BCM590XX_REG_TABLE(gpldo6, ldo_a_table), 191 BCM590XX_REG_TABLE(vbus, ldo_vbus), 192}; 193 194struct bcm590xx_reg { 195 struct regulator_desc *desc; 196 struct bcm590xx *mfd; 197}; 198 199static int bcm590xx_get_vsel_register(int id) 200{ 201 if (BCM590XX_REG_IS_LDO(id)) 202 return BCM590XX_RFLDOCTRL + id; 203 else if (BCM590XX_REG_IS_GPLDO(id)) 204 return BCM590XX_GPLDO1CTRL + id; 205 else 206 return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3; 207} 208 209static int bcm590xx_get_enable_register(int id) 210{ 211 int reg = 0; 212 213 if (BCM590XX_REG_IS_LDO(id)) 214 reg = BCM590XX_RFLDOPMCTRL1 + id * 2; 215 else if (BCM590XX_REG_IS_GPLDO(id)) 216 reg = BCM590XX_GPLDO1PMCTRL1 + id * 2; 217 else 218 switch (id) { 219 case BCM590XX_REG_CSR: 220 reg = BCM590XX_CSRPMCTRL1; 221 break; 222 case BCM590XX_REG_IOSR1: 223 reg = BCM590XX_IOSR1PMCTRL1; 224 break; 225 case BCM590XX_REG_IOSR2: 226 reg = BCM590XX_IOSR2PMCTRL1; 227 break; 228 case BCM590XX_REG_MSR: 229 reg = BCM590XX_MSRPMCTRL1; 230 break; 231 case BCM590XX_REG_SDSR1: 232 reg = BCM590XX_SDSR1PMCTRL1; 233 break; 234 case BCM590XX_REG_SDSR2: 235 reg = BCM590XX_SDSR2PMCTRL1; 236 break; 237 case BCM590XX_REG_VSR: 238 reg = BCM590XX_VSRPMCTRL1; 239 break; 240 case BCM590XX_REG_VBUS: 241 reg = BCM590XX_OTG_CTRL; 242 break; 243 } 244 245 246 return reg; 247} 248 249static const struct regulator_ops bcm590xx_ops_ldo = { 250 .is_enabled = regulator_is_enabled_regmap, 251 .enable = regulator_enable_regmap, 252 .disable = regulator_disable_regmap, 253 .get_voltage_sel = regulator_get_voltage_sel_regmap, 254 .set_voltage_sel = regulator_set_voltage_sel_regmap, 255 .list_voltage = regulator_list_voltage_table, 256 .map_voltage = regulator_map_voltage_iterate, 257}; 258 259static const struct regulator_ops bcm590xx_ops_dcdc = { 260 .is_enabled = regulator_is_enabled_regmap, 261 .enable = regulator_enable_regmap, 262 .disable = regulator_disable_regmap, 263 .get_voltage_sel = regulator_get_voltage_sel_regmap, 264 .set_voltage_sel = regulator_set_voltage_sel_regmap, 265 .list_voltage = regulator_list_voltage_linear_range, 266 .map_voltage = regulator_map_voltage_linear_range, 267}; 268 269static const struct regulator_ops bcm590xx_ops_vbus = { 270 .is_enabled = regulator_is_enabled_regmap, 271 .enable = regulator_enable_regmap, 272 .disable = regulator_disable_regmap, 273}; 274 275static int bcm590xx_probe(struct platform_device *pdev) 276{ 277 struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent); 278 struct bcm590xx_reg *pmu; 279 struct regulator_config config = { }; 280 struct bcm590xx_info *info; 281 struct regulator_dev *rdev; 282 int i; 283 284 pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL); 285 if (!pmu) 286 return -ENOMEM; 287 288 pmu->mfd = bcm590xx; 289 290 platform_set_drvdata(pdev, pmu); 291 292 pmu->desc = devm_kcalloc(&pdev->dev, 293 BCM590XX_NUM_REGS, 294 sizeof(struct regulator_desc), 295 GFP_KERNEL); 296 if (!pmu->desc) 297 return -ENOMEM; 298 299 info = bcm590xx_regs; 300 301 for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) { 302 /* Register the regulators */ 303 pmu->desc[i].name = info->name; 304 pmu->desc[i].of_match = of_match_ptr(info->name); 305 pmu->desc[i].regulators_node = of_match_ptr("regulators"); 306 pmu->desc[i].supply_name = info->vin_name; 307 pmu->desc[i].id = i; 308 pmu->desc[i].volt_table = info->volt_table; 309 pmu->desc[i].n_voltages = info->n_voltages; 310 pmu->desc[i].linear_ranges = info->linear_ranges; 311 pmu->desc[i].n_linear_ranges = info->n_linear_ranges; 312 313 if ((BCM590XX_REG_IS_LDO(i)) || (BCM590XX_REG_IS_GPLDO(i))) { 314 pmu->desc[i].ops = &bcm590xx_ops_ldo; 315 pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK; 316 } else if (BCM590XX_REG_IS_VBUS(i)) 317 pmu->desc[i].ops = &bcm590xx_ops_vbus; 318 else { 319 pmu->desc[i].ops = &bcm590xx_ops_dcdc; 320 pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK; 321 } 322 323 if (BCM590XX_REG_IS_VBUS(i)) 324 pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE; 325 else { 326 pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i); 327 pmu->desc[i].enable_is_inverted = true; 328 pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE; 329 } 330 pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i); 331 pmu->desc[i].type = REGULATOR_VOLTAGE; 332 pmu->desc[i].owner = THIS_MODULE; 333 334 config.dev = bcm590xx->dev; 335 config.driver_data = pmu; 336 if (BCM590XX_REG_IS_GPLDO(i) || BCM590XX_REG_IS_VBUS(i)) 337 config.regmap = bcm590xx->regmap_sec; 338 else 339 config.regmap = bcm590xx->regmap_pri; 340 341 rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i], 342 &config); 343 if (IS_ERR(rdev)) { 344 dev_err(bcm590xx->dev, 345 "failed to register %s regulator\n", 346 pdev->name); 347 return PTR_ERR(rdev); 348 } 349 } 350 351 return 0; 352} 353 354static struct platform_driver bcm590xx_regulator_driver = { 355 .driver = { 356 .name = "bcm590xx-vregs", 357 }, 358 .probe = bcm590xx_probe, 359}; 360module_platform_driver(bcm590xx_regulator_driver); 361 362MODULE_AUTHOR("Matt Porter <mporter@linaro.org>"); 363MODULE_DESCRIPTION("BCM590xx voltage regulator driver"); 364MODULE_LICENSE("GPL v2"); 365MODULE_ALIAS("platform:bcm590xx-vregs");