Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 1 | /* |
| 2 | * da9052-regulator.c: Regulator driver for DA9052 |
| 3 | * |
| 4 | * Copyright(c) 2011 Dialog Semiconductor Ltd. |
| 5 | * |
| 6 | * Author: David Dajun Chen <dchen@diasemi.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/moduleparam.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/err.h> |
| 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/regulator/driver.h> |
| 21 | #include <linux/regulator/machine.h> |
| 22 | |
| 23 | #include <linux/mfd/da9052/da9052.h> |
| 24 | #include <linux/mfd/da9052/reg.h> |
| 25 | #include <linux/mfd/da9052/pdata.h> |
| 26 | |
| 27 | /* Buck step size */ |
| 28 | #define DA9052_BUCK_PERI_3uV_STEP 100000 |
| 29 | #define DA9052_BUCK_PERI_REG_MAP_UPTO_3uV 24 |
| 30 | #define DA9052_CONST_3uV 3000000 |
| 31 | |
| 32 | #define DA9052_MIN_UA 0 |
| 33 | #define DA9052_MAX_UA 3 |
| 34 | #define DA9052_CURRENT_RANGE 4 |
| 35 | |
| 36 | /* Bit masks */ |
| 37 | #define DA9052_BUCK_ILIM_MASK_EVEN 0x0c |
| 38 | #define DA9052_BUCK_ILIM_MASK_ODD 0xc0 |
| 39 | |
| 40 | static const u32 da9052_current_limits[3][4] = { |
| 41 | {700000, 800000, 1000000, 1200000}, /* DA9052-BC BUCKs */ |
| 42 | {1600000, 2000000, 2400000, 3000000}, /* DA9053-AA/Bx BUCK-CORE */ |
| 43 | {800000, 1000000, 1200000, 1500000}, /* DA9053-AA/Bx BUCK-PRO, |
| 44 | * BUCK-MEM and BUCK-PERI |
| 45 | */ |
| 46 | }; |
| 47 | |
| 48 | struct da9052_regulator_info { |
| 49 | struct regulator_desc reg_desc; |
| 50 | int step_uV; |
| 51 | int min_uV; |
| 52 | int max_uV; |
| 53 | unsigned char volt_shift; |
| 54 | unsigned char en_bit; |
| 55 | unsigned char activate_bit; |
| 56 | }; |
| 57 | |
| 58 | struct da9052_regulator { |
| 59 | struct da9052 *da9052; |
| 60 | struct da9052_regulator_info *info; |
| 61 | struct regulator_dev *rdev; |
| 62 | }; |
| 63 | |
| 64 | static int verify_range(struct da9052_regulator_info *info, |
| 65 | int min_uV, int max_uV) |
| 66 | { |
| 67 | if (min_uV > info->max_uV || max_uV < info->min_uV) |
| 68 | return -EINVAL; |
| 69 | |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static int da9052_regulator_enable(struct regulator_dev *rdev) |
| 74 | { |
| 75 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 76 | struct da9052_regulator_info *info = regulator->info; |
| 77 | int offset = rdev_get_id(rdev); |
| 78 | |
| 79 | return da9052_reg_update(regulator->da9052, |
| 80 | DA9052_BUCKCORE_REG + offset, |
| 81 | 1 << info->en_bit, 1 << info->en_bit); |
| 82 | } |
| 83 | |
| 84 | static int da9052_regulator_disable(struct regulator_dev *rdev) |
| 85 | { |
| 86 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 87 | struct da9052_regulator_info *info = regulator->info; |
| 88 | int offset = rdev_get_id(rdev); |
| 89 | |
| 90 | return da9052_reg_update(regulator->da9052, |
| 91 | DA9052_BUCKCORE_REG + offset, |
| 92 | 1 << info->en_bit, 0); |
| 93 | } |
| 94 | |
| 95 | static int da9052_regulator_is_enabled(struct regulator_dev *rdev) |
| 96 | { |
| 97 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 98 | struct da9052_regulator_info *info = regulator->info; |
| 99 | int offset = rdev_get_id(rdev); |
| 100 | int ret; |
| 101 | |
| 102 | ret = da9052_reg_read(regulator->da9052, DA9052_BUCKCORE_REG + offset); |
| 103 | if (ret < 0) |
| 104 | return ret; |
| 105 | |
| 106 | return ret & (1 << info->en_bit); |
| 107 | } |
| 108 | |
| 109 | static int da9052_dcdc_get_current_limit(struct regulator_dev *rdev) |
| 110 | { |
| 111 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 112 | int offset = rdev_get_id(rdev); |
| 113 | int ret, row = 2; |
| 114 | |
| 115 | ret = da9052_reg_read(regulator->da9052, DA9052_BUCKA_REG + offset/2); |
| 116 | if (ret < 0) |
| 117 | return ret; |
| 118 | |
| 119 | /* Determine the even or odd position of the buck current limit |
| 120 | * register field |
| 121 | */ |
| 122 | if (offset % 2 == 0) |
| 123 | ret = (ret & DA9052_BUCK_ILIM_MASK_EVEN) >> 2; |
| 124 | else |
| 125 | ret = (ret & DA9052_BUCK_ILIM_MASK_ODD) >> 6; |
| 126 | |
| 127 | /* Select the appropriate current limit range */ |
| 128 | if (regulator->da9052->chip_id == DA9052) |
| 129 | row = 0; |
| 130 | else if (offset == 0) |
| 131 | row = 1; |
| 132 | |
| 133 | return da9052_current_limits[row][ret]; |
| 134 | } |
| 135 | |
| 136 | static int da9052_dcdc_set_current_limit(struct regulator_dev *rdev, int min_uA, |
| 137 | int max_uA) |
| 138 | { |
| 139 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 140 | int offset = rdev_get_id(rdev); |
| 141 | int reg_val = 0; |
| 142 | int i, row = 2; |
| 143 | |
| 144 | /* Select the appropriate current limit range */ |
| 145 | if (regulator->da9052->chip_id == DA9052) |
| 146 | row = 0; |
| 147 | else if (offset == 0) |
| 148 | row = 1; |
| 149 | |
| 150 | if (min_uA > da9052_current_limits[row][DA9052_MAX_UA] || |
| 151 | max_uA < da9052_current_limits[row][DA9052_MIN_UA]) |
| 152 | return -EINVAL; |
| 153 | |
| 154 | for (i = 0; i < DA9052_CURRENT_RANGE; i++) { |
| 155 | if (min_uA <= da9052_current_limits[row][i]) { |
| 156 | reg_val = i; |
| 157 | break; |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | /* Determine the even or odd position of the buck current limit |
| 162 | * register field |
| 163 | */ |
| 164 | if (offset % 2 == 0) |
| 165 | return da9052_reg_update(regulator->da9052, |
| 166 | DA9052_BUCKA_REG + offset/2, |
| 167 | DA9052_BUCK_ILIM_MASK_EVEN, |
| 168 | reg_val << 2); |
| 169 | else |
| 170 | return da9052_reg_update(regulator->da9052, |
| 171 | DA9052_BUCKA_REG + offset/2, |
| 172 | DA9052_BUCK_ILIM_MASK_ODD, |
| 173 | reg_val << 6); |
| 174 | } |
| 175 | |
| 176 | static int da9052_list_buckperi_voltage(struct regulator_dev *rdev, |
| 177 | unsigned int selector) |
| 178 | { |
| 179 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 180 | struct da9052_regulator_info *info = regulator->info; |
| 181 | int volt_uV; |
| 182 | |
| 183 | if ((regulator->da9052->chip_id == DA9052) && |
| 184 | (selector >= DA9052_BUCK_PERI_REG_MAP_UPTO_3uV)) { |
| 185 | volt_uV = ((DA9052_BUCK_PERI_REG_MAP_UPTO_3uV * info->step_uV) |
| 186 | + info->min_uV); |
| 187 | volt_uV += (selector - DA9052_BUCK_PERI_REG_MAP_UPTO_3uV) |
| 188 | * (DA9052_BUCK_PERI_3uV_STEP); |
| 189 | } else |
| 190 | volt_uV = (selector * info->step_uV) + info->min_uV; |
| 191 | |
| 192 | if (volt_uV > info->max_uV) |
| 193 | return -EINVAL; |
| 194 | |
| 195 | return volt_uV; |
| 196 | } |
| 197 | |
| 198 | static int da9052_list_voltage(struct regulator_dev *rdev, |
| 199 | unsigned int selector) |
| 200 | { |
| 201 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 202 | struct da9052_regulator_info *info = regulator->info; |
| 203 | int volt_uV; |
| 204 | |
| 205 | volt_uV = info->min_uV + info->step_uV * selector; |
| 206 | |
| 207 | if (volt_uV > info->max_uV) |
| 208 | return -EINVAL; |
| 209 | |
| 210 | return volt_uV; |
| 211 | } |
| 212 | |
| 213 | static int da9052_regulator_set_voltage_int(struct regulator_dev *rdev, |
| 214 | int min_uV, int max_uV, |
| 215 | unsigned int *selector) |
| 216 | { |
| 217 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 218 | struct da9052_regulator_info *info = regulator->info; |
| 219 | int offset = rdev_get_id(rdev); |
| 220 | int ret; |
| 221 | |
| 222 | ret = verify_range(info, min_uV, max_uV); |
| 223 | if (ret < 0) |
| 224 | return ret; |
| 225 | |
| 226 | if (min_uV < info->min_uV) |
| 227 | min_uV = info->min_uV; |
| 228 | |
Axel Lin | 9365121 | 2012-03-05 20:27:56 +0800 | [diff] [blame] | 229 | *selector = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 230 | |
| 231 | ret = da9052_list_voltage(rdev, *selector); |
| 232 | if (ret < 0) |
| 233 | return ret; |
| 234 | |
| 235 | return da9052_reg_update(regulator->da9052, |
| 236 | DA9052_BUCKCORE_REG + offset, |
| 237 | (1 << info->volt_shift) - 1, *selector); |
| 238 | } |
| 239 | |
| 240 | static int da9052_set_ldo_voltage(struct regulator_dev *rdev, |
| 241 | int min_uV, int max_uV, |
| 242 | unsigned int *selector) |
| 243 | { |
| 244 | return da9052_regulator_set_voltage_int(rdev, min_uV, max_uV, selector); |
| 245 | } |
| 246 | |
| 247 | static int da9052_set_ldo5_6_voltage(struct regulator_dev *rdev, |
| 248 | int min_uV, int max_uV, |
| 249 | unsigned int *selector) |
| 250 | { |
| 251 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 252 | struct da9052_regulator_info *info = regulator->info; |
| 253 | int ret; |
| 254 | |
| 255 | ret = da9052_regulator_set_voltage_int(rdev, min_uV, max_uV, selector); |
| 256 | if (ret < 0) |
| 257 | return ret; |
| 258 | |
| 259 | /* Some LDOs are DVC controlled which requires enabling of |
| 260 | * the LDO activate bit to implment the changes on the |
| 261 | * LDO output. |
| 262 | */ |
Axel Lin | 4adf9be | 2012-03-02 18:07:21 +0800 | [diff] [blame] | 263 | return da9052_reg_update(regulator->da9052, DA9052_SUPPLY_REG, |
| 264 | info->activate_bit, info->activate_bit); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | static int da9052_set_dcdc_voltage(struct regulator_dev *rdev, |
| 268 | int min_uV, int max_uV, |
| 269 | unsigned int *selector) |
| 270 | { |
| 271 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 272 | struct da9052_regulator_info *info = regulator->info; |
| 273 | int ret; |
| 274 | |
| 275 | ret = da9052_regulator_set_voltage_int(rdev, min_uV, max_uV, selector); |
| 276 | if (ret < 0) |
| 277 | return ret; |
| 278 | |
| 279 | /* Some DCDCs are DVC controlled which requires enabling of |
| 280 | * the DCDC activate bit to implment the changes on the |
| 281 | * DCDC output. |
| 282 | */ |
Axel Lin | 4adf9be | 2012-03-02 18:07:21 +0800 | [diff] [blame] | 283 | return da9052_reg_update(regulator->da9052, DA9052_SUPPLY_REG, |
| 284 | info->activate_bit, info->activate_bit); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | static int da9052_get_regulator_voltage_sel(struct regulator_dev *rdev) |
| 288 | { |
| 289 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 290 | struct da9052_regulator_info *info = regulator->info; |
| 291 | int offset = rdev_get_id(rdev); |
| 292 | int ret; |
| 293 | |
| 294 | ret = da9052_reg_read(regulator->da9052, DA9052_BUCKCORE_REG + offset); |
| 295 | if (ret < 0) |
| 296 | return ret; |
| 297 | |
| 298 | ret &= ((1 << info->volt_shift) - 1); |
| 299 | |
| 300 | return ret; |
| 301 | } |
| 302 | |
| 303 | static int da9052_set_buckperi_voltage(struct regulator_dev *rdev, int min_uV, |
| 304 | int max_uV, unsigned int *selector) |
| 305 | { |
| 306 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 307 | struct da9052_regulator_info *info = regulator->info; |
| 308 | int offset = rdev_get_id(rdev); |
| 309 | int ret; |
| 310 | |
| 311 | ret = verify_range(info, min_uV, max_uV); |
| 312 | if (ret < 0) |
| 313 | return ret; |
| 314 | |
| 315 | if (min_uV < info->min_uV) |
| 316 | min_uV = info->min_uV; |
| 317 | |
| 318 | if ((regulator->da9052->chip_id == DA9052) && |
| 319 | (min_uV >= DA9052_CONST_3uV)) |
| 320 | *selector = DA9052_BUCK_PERI_REG_MAP_UPTO_3uV + |
Axel Lin | 9365121 | 2012-03-05 20:27:56 +0800 | [diff] [blame] | 321 | DIV_ROUND_UP(min_uV - DA9052_CONST_3uV, |
| 322 | DA9052_BUCK_PERI_3uV_STEP); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 323 | else |
Axel Lin | 9365121 | 2012-03-05 20:27:56 +0800 | [diff] [blame] | 324 | *selector = DIV_ROUND_UP(min_uV - info->min_uV, info->step_uV); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 325 | |
| 326 | ret = da9052_list_buckperi_voltage(rdev, *selector); |
| 327 | if (ret < 0) |
| 328 | return ret; |
| 329 | |
| 330 | return da9052_reg_update(regulator->da9052, |
| 331 | DA9052_BUCKCORE_REG + offset, |
| 332 | (1 << info->volt_shift) - 1, *selector); |
| 333 | } |
| 334 | |
| 335 | static int da9052_get_buckperi_voltage_sel(struct regulator_dev *rdev) |
| 336 | { |
| 337 | struct da9052_regulator *regulator = rdev_get_drvdata(rdev); |
| 338 | struct da9052_regulator_info *info = regulator->info; |
| 339 | int offset = rdev_get_id(rdev); |
| 340 | int ret; |
| 341 | |
| 342 | ret = da9052_reg_read(regulator->da9052, DA9052_BUCKCORE_REG + offset); |
| 343 | if (ret < 0) |
| 344 | return ret; |
| 345 | |
| 346 | ret &= ((1 << info->volt_shift) - 1); |
| 347 | |
| 348 | return ret; |
| 349 | } |
| 350 | |
| 351 | static struct regulator_ops da9052_buckperi_ops = { |
| 352 | .list_voltage = da9052_list_buckperi_voltage, |
| 353 | .get_voltage_sel = da9052_get_buckperi_voltage_sel, |
| 354 | .set_voltage = da9052_set_buckperi_voltage, |
| 355 | |
| 356 | .get_current_limit = da9052_dcdc_get_current_limit, |
| 357 | .set_current_limit = da9052_dcdc_set_current_limit, |
| 358 | |
| 359 | .is_enabled = da9052_regulator_is_enabled, |
| 360 | .enable = da9052_regulator_enable, |
| 361 | .disable = da9052_regulator_disable, |
| 362 | }; |
| 363 | |
| 364 | static struct regulator_ops da9052_dcdc_ops = { |
| 365 | .set_voltage = da9052_set_dcdc_voltage, |
| 366 | .get_current_limit = da9052_dcdc_get_current_limit, |
| 367 | .set_current_limit = da9052_dcdc_set_current_limit, |
| 368 | |
| 369 | .list_voltage = da9052_list_voltage, |
| 370 | .get_voltage_sel = da9052_get_regulator_voltage_sel, |
| 371 | .is_enabled = da9052_regulator_is_enabled, |
| 372 | .enable = da9052_regulator_enable, |
| 373 | .disable = da9052_regulator_disable, |
| 374 | }; |
| 375 | |
| 376 | static struct regulator_ops da9052_ldo5_6_ops = { |
| 377 | .set_voltage = da9052_set_ldo5_6_voltage, |
| 378 | |
| 379 | .list_voltage = da9052_list_voltage, |
| 380 | .get_voltage_sel = da9052_get_regulator_voltage_sel, |
| 381 | .is_enabled = da9052_regulator_is_enabled, |
| 382 | .enable = da9052_regulator_enable, |
| 383 | .disable = da9052_regulator_disable, |
| 384 | }; |
| 385 | |
| 386 | static struct regulator_ops da9052_ldo_ops = { |
| 387 | .set_voltage = da9052_set_ldo_voltage, |
| 388 | |
| 389 | .list_voltage = da9052_list_voltage, |
| 390 | .get_voltage_sel = da9052_get_regulator_voltage_sel, |
| 391 | .is_enabled = da9052_regulator_is_enabled, |
| 392 | .enable = da9052_regulator_enable, |
| 393 | .disable = da9052_regulator_disable, |
| 394 | }; |
| 395 | |
| 396 | #define DA9052_LDO5_6(_id, step, min, max, sbits, ebits, abits) \ |
| 397 | {\ |
| 398 | .reg_desc = {\ |
| 399 | .name = "LDO" #_id,\ |
| 400 | .ops = &da9052_ldo5_6_ops,\ |
| 401 | .type = REGULATOR_VOLTAGE,\ |
| 402 | .id = _id,\ |
Axel Lin | 7b95765 | 2012-03-05 20:04:32 +0800 | [diff] [blame] | 403 | .n_voltages = (max - min) / step + 1, \ |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 404 | .owner = THIS_MODULE,\ |
| 405 | },\ |
| 406 | .min_uV = (min) * 1000,\ |
| 407 | .max_uV = (max) * 1000,\ |
| 408 | .step_uV = (step) * 1000,\ |
| 409 | .volt_shift = (sbits),\ |
| 410 | .en_bit = (ebits),\ |
| 411 | .activate_bit = (abits),\ |
| 412 | } |
| 413 | |
| 414 | #define DA9052_LDO(_id, step, min, max, sbits, ebits, abits) \ |
| 415 | {\ |
| 416 | .reg_desc = {\ |
| 417 | .name = "LDO" #_id,\ |
| 418 | .ops = &da9052_ldo_ops,\ |
| 419 | .type = REGULATOR_VOLTAGE,\ |
| 420 | .id = _id,\ |
Axel Lin | 7b95765 | 2012-03-05 20:04:32 +0800 | [diff] [blame] | 421 | .n_voltages = (max - min) / step + 1, \ |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 422 | .owner = THIS_MODULE,\ |
| 423 | },\ |
| 424 | .min_uV = (min) * 1000,\ |
| 425 | .max_uV = (max) * 1000,\ |
| 426 | .step_uV = (step) * 1000,\ |
| 427 | .volt_shift = (sbits),\ |
| 428 | .en_bit = (ebits),\ |
| 429 | .activate_bit = (abits),\ |
| 430 | } |
| 431 | |
| 432 | #define DA9052_DCDC(_id, step, min, max, sbits, ebits, abits) \ |
| 433 | {\ |
| 434 | .reg_desc = {\ |
| 435 | .name = "BUCK" #_id,\ |
| 436 | .ops = &da9052_dcdc_ops,\ |
| 437 | .type = REGULATOR_VOLTAGE,\ |
| 438 | .id = _id,\ |
Axel Lin | 7b95765 | 2012-03-05 20:04:32 +0800 | [diff] [blame] | 439 | .n_voltages = (max - min) / step + 1, \ |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 440 | .owner = THIS_MODULE,\ |
| 441 | },\ |
| 442 | .min_uV = (min) * 1000,\ |
| 443 | .max_uV = (max) * 1000,\ |
| 444 | .step_uV = (step) * 1000,\ |
| 445 | .volt_shift = (sbits),\ |
| 446 | .en_bit = (ebits),\ |
| 447 | .activate_bit = (abits),\ |
| 448 | } |
| 449 | |
| 450 | #define DA9052_BUCKPERI(_id, step, min, max, sbits, ebits, abits) \ |
| 451 | {\ |
| 452 | .reg_desc = {\ |
| 453 | .name = "BUCK" #_id,\ |
| 454 | .ops = &da9052_buckperi_ops,\ |
| 455 | .type = REGULATOR_VOLTAGE,\ |
| 456 | .id = _id,\ |
Axel Lin | 7b95765 | 2012-03-05 20:04:32 +0800 | [diff] [blame] | 457 | .n_voltages = (max - min) / step + 1, \ |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 458 | .owner = THIS_MODULE,\ |
| 459 | },\ |
| 460 | .min_uV = (min) * 1000,\ |
| 461 | .max_uV = (max) * 1000,\ |
| 462 | .step_uV = (step) * 1000,\ |
| 463 | .volt_shift = (sbits),\ |
| 464 | .en_bit = (ebits),\ |
| 465 | .activate_bit = (abits),\ |
| 466 | } |
| 467 | |
Axel Lin | 6242eae | 2011-12-20 17:12:00 +0800 | [diff] [blame] | 468 | static struct da9052_regulator_info da9052_regulator_info[] = { |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 469 | /* Buck1 - 4 */ |
| 470 | DA9052_DCDC(0, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO), |
| 471 | DA9052_DCDC(1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO), |
| 472 | DA9052_DCDC(2, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO), |
| 473 | DA9052_BUCKPERI(3, 50, 1800, 3600, 5, 6, 0), |
| 474 | /* LD01 - LDO10 */ |
| 475 | DA9052_LDO(4, 50, 600, 1800, 5, 6, 0), |
| 476 | DA9052_LDO5_6(5, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO), |
| 477 | DA9052_LDO5_6(6, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO), |
| 478 | DA9052_LDO(7, 25, 1725, 3300, 6, 6, 0), |
| 479 | DA9052_LDO(8, 50, 1200, 3600, 6, 6, 0), |
| 480 | DA9052_LDO(9, 50, 1200, 3600, 6, 6, 0), |
| 481 | DA9052_LDO(10, 50, 1200, 3600, 6, 6, 0), |
| 482 | DA9052_LDO(11, 50, 1200, 3600, 6, 6, 0), |
| 483 | DA9052_LDO(12, 50, 1250, 3650, 6, 6, 0), |
| 484 | DA9052_LDO(13, 50, 1200, 3600, 6, 6, 0), |
| 485 | }; |
| 486 | |
Axel Lin | 6242eae | 2011-12-20 17:12:00 +0800 | [diff] [blame] | 487 | static struct da9052_regulator_info da9053_regulator_info[] = { |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 488 | /* Buck1 - 4 */ |
| 489 | DA9052_DCDC(0, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBCOREGO), |
| 490 | DA9052_DCDC(1, 25, 500, 2075, 6, 6, DA9052_SUPPLY_VBPROGO), |
| 491 | DA9052_DCDC(2, 25, 925, 2500, 6, 6, DA9052_SUPPLY_VBMEMGO), |
| 492 | DA9052_BUCKPERI(3, 25, 925, 2500, 6, 6, 0), |
| 493 | /* LD01 - LDO10 */ |
| 494 | DA9052_LDO(4, 50, 600, 1800, 5, 6, 0), |
| 495 | DA9052_LDO5_6(5, 25, 600, 1800, 6, 6, DA9052_SUPPLY_VLDO2GO), |
| 496 | DA9052_LDO5_6(6, 25, 1725, 3300, 6, 6, DA9052_SUPPLY_VLDO3GO), |
| 497 | DA9052_LDO(7, 25, 1725, 3300, 6, 6, 0), |
| 498 | DA9052_LDO(8, 50, 1200, 3600, 6, 6, 0), |
| 499 | DA9052_LDO(9, 50, 1200, 3600, 6, 6, 0), |
| 500 | DA9052_LDO(10, 50, 1200, 3600, 6, 6, 0), |
| 501 | DA9052_LDO(11, 50, 1200, 3600, 6, 6, 0), |
| 502 | DA9052_LDO(12, 50, 1250, 3650, 6, 6, 0), |
| 503 | DA9052_LDO(13, 50, 1200, 3600, 6, 6, 0), |
| 504 | }; |
| 505 | |
| 506 | static inline struct da9052_regulator_info *find_regulator_info(u8 chip_id, |
| 507 | int id) |
| 508 | { |
| 509 | struct da9052_regulator_info *info; |
| 510 | int i; |
| 511 | |
Ashish Jangam | 984b5a6 | 2011-12-15 18:59:53 +0530 | [diff] [blame] | 512 | switch (chip_id) { |
| 513 | case DA9052: |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 514 | for (i = 0; i < ARRAY_SIZE(da9052_regulator_info); i++) { |
| 515 | info = &da9052_regulator_info[i]; |
| 516 | if (info->reg_desc.id == id) |
| 517 | return info; |
| 518 | } |
Ashish Jangam | 984b5a6 | 2011-12-15 18:59:53 +0530 | [diff] [blame] | 519 | break; |
| 520 | case DA9053_AA: |
| 521 | case DA9053_BA: |
| 522 | case DA9053_BB: |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 523 | for (i = 0; i < ARRAY_SIZE(da9053_regulator_info); i++) { |
| 524 | info = &da9053_regulator_info[i]; |
| 525 | if (info->reg_desc.id == id) |
| 526 | return info; |
| 527 | } |
Ashish Jangam | 984b5a6 | 2011-12-15 18:59:53 +0530 | [diff] [blame] | 528 | break; |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 529 | } |
| 530 | |
| 531 | return NULL; |
| 532 | } |
| 533 | |
| 534 | static int __devinit da9052_regulator_probe(struct platform_device *pdev) |
| 535 | { |
| 536 | struct da9052_regulator *regulator; |
| 537 | struct da9052 *da9052; |
| 538 | struct da9052_pdata *pdata; |
| 539 | int ret; |
| 540 | |
Ashish Jangam | 984b5a6 | 2011-12-15 18:59:53 +0530 | [diff] [blame] | 541 | regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9052_regulator), |
| 542 | GFP_KERNEL); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 543 | if (!regulator) |
| 544 | return -ENOMEM; |
| 545 | |
| 546 | da9052 = dev_get_drvdata(pdev->dev.parent); |
| 547 | pdata = da9052->dev->platform_data; |
| 548 | regulator->da9052 = da9052; |
| 549 | |
| 550 | regulator->info = find_regulator_info(regulator->da9052->chip_id, |
| 551 | pdev->id); |
| 552 | if (regulator->info == NULL) { |
| 553 | dev_err(&pdev->dev, "invalid regulator ID specified\n"); |
| 554 | ret = -EINVAL; |
| 555 | goto err; |
| 556 | } |
| 557 | regulator->rdev = regulator_register(®ulator->info->reg_desc, |
| 558 | &pdev->dev, |
| 559 | pdata->regulators[pdev->id], |
Mark Brown | 47aed92 | 2011-12-15 15:03:38 +0800 | [diff] [blame] | 560 | regulator, NULL); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 561 | if (IS_ERR(regulator->rdev)) { |
| 562 | dev_err(&pdev->dev, "failed to register regulator %s\n", |
| 563 | regulator->info->reg_desc.name); |
| 564 | ret = PTR_ERR(regulator->rdev); |
| 565 | goto err; |
| 566 | } |
| 567 | |
| 568 | platform_set_drvdata(pdev, regulator); |
| 569 | |
| 570 | return 0; |
| 571 | err: |
Ashish Jangam | 984b5a6 | 2011-12-15 18:59:53 +0530 | [diff] [blame] | 572 | devm_kfree(&pdev->dev, regulator); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 573 | return ret; |
| 574 | } |
| 575 | |
| 576 | static int __devexit da9052_regulator_remove(struct platform_device *pdev) |
| 577 | { |
| 578 | struct da9052_regulator *regulator = platform_get_drvdata(pdev); |
| 579 | |
| 580 | regulator_unregister(regulator->rdev); |
Ashish Jangam | 984b5a6 | 2011-12-15 18:59:53 +0530 | [diff] [blame] | 581 | devm_kfree(&pdev->dev, regulator); |
Ashish Jangam | 08bf1c0 | 2011-12-09 19:48:20 +0530 | [diff] [blame] | 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | static struct platform_driver da9052_regulator_driver = { |
| 587 | .probe = da9052_regulator_probe, |
| 588 | .remove = __devexit_p(da9052_regulator_remove), |
| 589 | .driver = { |
| 590 | .name = "da9052-regulator", |
| 591 | .owner = THIS_MODULE, |
| 592 | }, |
| 593 | }; |
| 594 | |
| 595 | static int __init da9052_regulator_init(void) |
| 596 | { |
| 597 | return platform_driver_register(&da9052_regulator_driver); |
| 598 | } |
| 599 | subsys_initcall(da9052_regulator_init); |
| 600 | |
| 601 | static void __exit da9052_regulator_exit(void) |
| 602 | { |
| 603 | platform_driver_unregister(&da9052_regulator_driver); |
| 604 | } |
| 605 | module_exit(da9052_regulator_exit); |
| 606 | |
| 607 | MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); |
| 608 | MODULE_DESCRIPTION("Power Regulator driver for Dialog DA9052 PMIC"); |
| 609 | MODULE_LICENSE("GPL"); |
| 610 | MODULE_ALIAS("platform:da9052-regulator"); |