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1// SPDX-License-Identifier: GPL-2.02//3// Regulators driver for Dialog Semiconductor DA903x4//5// Copyright (C) 2006-2008 Marvell International Ltd.6// Copyright (C) 2008 Compulab Ltd.7 8#include <linux/kernel.h>9#include <linux/init.h>10#include <linux/err.h>11#include <linux/module.h>12#include <linux/platform_device.h>13#include <linux/regulator/driver.h>14#include <linux/regulator/machine.h>15#include <linux/mfd/da903x.h>16 17/* DA9030 Registers */18#define DA9030_INVAL (-1)19#define DA9030_LDO1011 (0x10)20#define DA9030_LDO15 (0x11)21#define DA9030_LDO1416 (0x12)22#define DA9030_LDO1819 (0x13)23#define DA9030_LDO17 (0x14)24#define DA9030_BUCK2DVM1 (0x15)25#define DA9030_BUCK2DVM2 (0x16)26#define DA9030_RCTL11 (0x17)27#define DA9030_RCTL21 (0x18)28#define DA9030_LDO1 (0x90)29#define DA9030_LDO23 (0x91)30#define DA9030_LDO45 (0x92)31#define DA9030_LDO6 (0x93)32#define DA9030_LDO78 (0x94)33#define DA9030_LDO912 (0x95)34#define DA9030_BUCK (0x96)35#define DA9030_RCTL12 (0x97)36#define DA9030_RCTL22 (0x98)37#define DA9030_LDO_UNLOCK (0xa0)38#define DA9030_LDO_UNLOCK_MASK (0xe0)39#define DA9034_OVER1 (0x10)40 41/* DA9034 Registers */42#define DA9034_INVAL (-1)43#define DA9034_OVER2 (0x11)44#define DA9034_OVER3 (0x12)45#define DA9034_LDO643 (0x13)46#define DA9034_LDO987 (0x14)47#define DA9034_LDO1110 (0x15)48#define DA9034_LDO1312 (0x16)49#define DA9034_LDO1514 (0x17)50#define DA9034_VCC1 (0x20)51#define DA9034_ADTV1 (0x23)52#define DA9034_ADTV2 (0x24)53#define DA9034_AVRC (0x25)54#define DA9034_CDTV1 (0x26)55#define DA9034_CDTV2 (0x27)56#define DA9034_CVRC (0x28)57#define DA9034_SDTV1 (0x29)58#define DA9034_SDTV2 (0x2a)59#define DA9034_SVRC (0x2b)60#define DA9034_MDTV1 (0x32)61#define DA9034_MDTV2 (0x33)62#define DA9034_MVRC (0x34)63 64/* DA9035 Registers. DA9034 Registers are compatible to DA9035. */65#define DA9035_OVER3 (0x12)66#define DA9035_VCC2 (0x1f)67#define DA9035_3DTV1 (0x2c)68#define DA9035_3DTV2 (0x2d)69#define DA9035_3VRC (0x2e)70#define DA9035_AUTOSKIP (0x2f)71 72struct da903x_regulator_info {73 struct regulator_desc desc;74 75 int max_uV;76 int vol_reg;77 int vol_shift;78 int vol_nbits;79 int update_reg;80 int update_bit;81 int enable_reg;82 int enable_bit;83};84 85static inline struct device *to_da903x_dev(struct regulator_dev *rdev)86{87 return rdev_get_dev(rdev)->parent->parent;88}89 90static inline int check_range(struct da903x_regulator_info *info,91 int min_uV, int max_uV)92{93 if (min_uV < info->desc.min_uV || min_uV > info->max_uV)94 return -EINVAL;95 96 return 0;97}98 99/* DA9030/DA9034 common operations */100static int da903x_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)101{102 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);103 struct device *da9034_dev = to_da903x_dev(rdev);104 uint8_t val, mask;105 106 if (rdev->desc->n_voltages == 1)107 return -EINVAL;108 109 val = selector << info->vol_shift;110 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;111 112 return da903x_update(da9034_dev, info->vol_reg, val, mask);113}114 115static int da903x_get_voltage_sel(struct regulator_dev *rdev)116{117 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);118 struct device *da9034_dev = to_da903x_dev(rdev);119 uint8_t val, mask;120 int ret;121 122 if (rdev->desc->n_voltages == 1)123 return 0;124 125 ret = da903x_read(da9034_dev, info->vol_reg, &val);126 if (ret)127 return ret;128 129 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;130 val = (val & mask) >> info->vol_shift;131 132 return val;133}134 135static int da903x_enable(struct regulator_dev *rdev)136{137 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);138 struct device *da9034_dev = to_da903x_dev(rdev);139 140 return da903x_set_bits(da9034_dev, info->enable_reg,141 1 << info->enable_bit);142}143 144static int da903x_disable(struct regulator_dev *rdev)145{146 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);147 struct device *da9034_dev = to_da903x_dev(rdev);148 149 return da903x_clr_bits(da9034_dev, info->enable_reg,150 1 << info->enable_bit);151}152 153static int da903x_is_enabled(struct regulator_dev *rdev)154{155 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);156 struct device *da9034_dev = to_da903x_dev(rdev);157 uint8_t reg_val;158 int ret;159 160 ret = da903x_read(da9034_dev, info->enable_reg, ®_val);161 if (ret)162 return ret;163 164 return !!(reg_val & (1 << info->enable_bit));165}166 167/* DA9030 specific operations */168static int da9030_set_ldo1_15_voltage_sel(struct regulator_dev *rdev,169 unsigned selector)170{171 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);172 struct device *da903x_dev = to_da903x_dev(rdev);173 uint8_t val, mask;174 int ret;175 176 val = selector << info->vol_shift;177 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;178 val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */179 mask |= DA9030_LDO_UNLOCK_MASK;180 181 /* write twice */182 ret = da903x_update(da903x_dev, info->vol_reg, val, mask);183 if (ret)184 return ret;185 186 return da903x_update(da903x_dev, info->vol_reg, val, mask);187}188 189static int da9030_map_ldo14_voltage(struct regulator_dev *rdev,190 int min_uV, int max_uV)191{192 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);193 int thresh, sel;194 195 if (check_range(info, min_uV, max_uV)) {196 pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV);197 return -EINVAL;198 }199 200 thresh = (info->max_uV + info->desc.min_uV) / 2;201 if (min_uV < thresh) {202 sel = DIV_ROUND_UP(thresh - min_uV, info->desc.uV_step);203 sel |= 0x4;204 } else {205 sel = DIV_ROUND_UP(min_uV - thresh, info->desc.uV_step);206 }207 208 return sel;209}210 211static int da9030_list_ldo14_voltage(struct regulator_dev *rdev,212 unsigned selector)213{214 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);215 int volt;216 217 if (selector & 0x4)218 volt = rdev->desc->min_uV +219 rdev->desc->uV_step * (3 - (selector & ~0x4));220 else221 volt = (info->max_uV + rdev->desc->min_uV) / 2 +222 rdev->desc->uV_step * (selector & ~0x4);223 224 if (volt > info->max_uV)225 return -EINVAL;226 227 return volt;228}229 230/* DA9034 specific operations */231static int da9034_set_dvc_voltage_sel(struct regulator_dev *rdev,232 unsigned selector)233{234 struct da903x_regulator_info *info = rdev_get_drvdata(rdev);235 struct device *da9034_dev = to_da903x_dev(rdev);236 uint8_t val, mask;237 int ret;238 239 val = selector << info->vol_shift;240 mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;241 242 ret = da903x_update(da9034_dev, info->vol_reg, val, mask);243 if (ret)244 return ret;245 246 ret = da903x_set_bits(da9034_dev, info->update_reg,247 1 << info->update_bit);248 return ret;249}250 251static const struct linear_range da9034_ldo12_ranges[] = {252 REGULATOR_LINEAR_RANGE(1700000, 0, 7, 50000),253 REGULATOR_LINEAR_RANGE(2700000, 8, 15, 50000),254};255 256static const struct regulator_ops da903x_regulator_ldo_ops = {257 .set_voltage_sel = da903x_set_voltage_sel,258 .get_voltage_sel = da903x_get_voltage_sel,259 .list_voltage = regulator_list_voltage_linear,260 .map_voltage = regulator_map_voltage_linear,261 .enable = da903x_enable,262 .disable = da903x_disable,263 .is_enabled = da903x_is_enabled,264};265 266/* NOTE: this is dedicated for the insane DA9030 LDO14 */267static const struct regulator_ops da9030_regulator_ldo14_ops = {268 .set_voltage_sel = da903x_set_voltage_sel,269 .get_voltage_sel = da903x_get_voltage_sel,270 .list_voltage = da9030_list_ldo14_voltage,271 .map_voltage = da9030_map_ldo14_voltage,272 .enable = da903x_enable,273 .disable = da903x_disable,274 .is_enabled = da903x_is_enabled,275};276 277/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */278static const struct regulator_ops da9030_regulator_ldo1_15_ops = {279 .set_voltage_sel = da9030_set_ldo1_15_voltage_sel,280 .get_voltage_sel = da903x_get_voltage_sel,281 .list_voltage = regulator_list_voltage_linear,282 .map_voltage = regulator_map_voltage_linear,283 .enable = da903x_enable,284 .disable = da903x_disable,285 .is_enabled = da903x_is_enabled,286};287 288static const struct regulator_ops da9034_regulator_dvc_ops = {289 .set_voltage_sel = da9034_set_dvc_voltage_sel,290 .get_voltage_sel = da903x_get_voltage_sel,291 .list_voltage = regulator_list_voltage_linear,292 .map_voltage = regulator_map_voltage_linear,293 .enable = da903x_enable,294 .disable = da903x_disable,295 .is_enabled = da903x_is_enabled,296};297 298/* NOTE: this is dedicated for the insane LDO12 */299static const struct regulator_ops da9034_regulator_ldo12_ops = {300 .set_voltage_sel = da903x_set_voltage_sel,301 .get_voltage_sel = da903x_get_voltage_sel,302 .list_voltage = regulator_list_voltage_linear_range,303 .map_voltage = regulator_map_voltage_linear_range,304 .enable = da903x_enable,305 .disable = da903x_disable,306 .is_enabled = da903x_is_enabled,307};308 309#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \310{ \311 .desc = { \312 .name = "LDO" #_id, \313 .ops = &da903x_regulator_ldo_ops, \314 .type = REGULATOR_VOLTAGE, \315 .id = _pmic##_ID_LDO##_id, \316 .n_voltages = (step) ? ((max - min) / step + 1) : 1, \317 .owner = THIS_MODULE, \318 .min_uV = (min) * 1000, \319 .uV_step = (step) * 1000, \320 }, \321 .max_uV = (max) * 1000, \322 .vol_reg = _pmic##_##vreg, \323 .vol_shift = (shift), \324 .vol_nbits = (nbits), \325 .enable_reg = _pmic##_##ereg, \326 .enable_bit = (ebit), \327}328 329#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \330{ \331 .desc = { \332 .name = #_id, \333 .ops = &da9034_regulator_dvc_ops, \334 .type = REGULATOR_VOLTAGE, \335 .id = _pmic##_ID_##_id, \336 .n_voltages = (step) ? ((max - min) / step + 1) : 1, \337 .owner = THIS_MODULE, \338 .min_uV = (min) * 1000, \339 .uV_step = (step) * 1000, \340 }, \341 .max_uV = (max) * 1000, \342 .vol_reg = _pmic##_##vreg, \343 .vol_shift = (0), \344 .vol_nbits = (nbits), \345 .update_reg = _pmic##_##ureg, \346 .update_bit = (ubit), \347 .enable_reg = _pmic##_##ereg, \348 .enable_bit = (ebit), \349}350 351#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \352 DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit)353 354#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \355 DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)356 357#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \358 DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \359 ereg, ebit)360 361#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \362 DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \363 ereg, ebit)364 365#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \366 DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \367 ereg, ebit)368 369static struct da903x_regulator_info da903x_regulator_info[] = {370 /* DA9030 */371 DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),372 373 DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),374 DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),375 DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),376 DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4),377 DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5),378 DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6),379 DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7),380 DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0),381 DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1),382 DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2),383 DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3),384 DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4),385 DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4),386 DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5),387 DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6),388 DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7),389 DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2),390 DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1),391 DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */392 393 /* DA9034 */394 DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0),395 DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1),396 DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2),397 DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),398 399 DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),400 DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6),401 DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0),402 DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1),403 DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2),404 DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3),405 DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4),406 DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5),407 DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6),408 DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7),409 DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),410 DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),411 DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */412 413 /* DA9035 */414 DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),415};416 417static inline struct da903x_regulator_info *find_regulator_info(int id)418{419 struct da903x_regulator_info *ri;420 int i;421 422 for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) {423 ri = &da903x_regulator_info[i];424 if (ri->desc.id == id)425 return ri;426 }427 return NULL;428}429 430static int da903x_regulator_probe(struct platform_device *pdev)431{432 struct da903x_regulator_info *ri = NULL;433 struct regulator_dev *rdev;434 struct regulator_config config = { };435 436 ri = find_regulator_info(pdev->id);437 if (ri == NULL) {438 dev_err(&pdev->dev, "invalid regulator ID specified\n");439 return -EINVAL;440 }441 442 /* Workaround for the weird LDO12 voltage setting */443 if (ri->desc.id == DA9034_ID_LDO12) {444 ri->desc.ops = &da9034_regulator_ldo12_ops;445 ri->desc.n_voltages = 16;446 ri->desc.linear_ranges = da9034_ldo12_ranges;447 ri->desc.n_linear_ranges = ARRAY_SIZE(da9034_ldo12_ranges);448 }449 450 if (ri->desc.id == DA9030_ID_LDO14)451 ri->desc.ops = &da9030_regulator_ldo14_ops;452 453 if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15)454 ri->desc.ops = &da9030_regulator_ldo1_15_ops;455 456 config.dev = &pdev->dev;457 config.init_data = dev_get_platdata(&pdev->dev);458 config.driver_data = ri;459 460 rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);461 if (IS_ERR(rdev)) {462 dev_err(&pdev->dev, "failed to register regulator %s\n",463 ri->desc.name);464 return PTR_ERR(rdev);465 }466 467 platform_set_drvdata(pdev, rdev);468 return 0;469}470 471static struct platform_driver da903x_regulator_driver = {472 .driver = {473 .name = "da903x-regulator",474 .probe_type = PROBE_PREFER_ASYNCHRONOUS,475 },476 .probe = da903x_regulator_probe,477};478 479static int __init da903x_regulator_init(void)480{481 return platform_driver_register(&da903x_regulator_driver);482}483subsys_initcall(da903x_regulator_init);484 485static void __exit da903x_regulator_exit(void)486{487 platform_driver_unregister(&da903x_regulator_driver);488}489module_exit(da903x_regulator_exit);490 491MODULE_LICENSE("GPL");492MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"493 "Mike Rapoport <mike@compulab.co.il>");494MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC");495MODULE_ALIAS("platform:da903x-regulator");496