Blame view
drivers/regulator/ab3100.c
16.6 KB
d619bc143 regulator: AB3100... |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 |
/* * drivers/regulator/ab3100.c * * Copyright (C) 2008-2009 ST-Ericsson AB * License terms: GNU General Public License (GPL) version 2 * Low-level control of the AB3100 IC Low Dropout (LDO) * regulators, external regulator and buck converter * Author: Mattias Wallin <mattias.wallin@stericsson.com> * Author: Linus Walleij <linus.walleij@stericsson.com> */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/err.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> |
812f9e9d4 mfd: Renamed ab31... |
19 |
#include <linux/mfd/abx500.h> |
d619bc143 regulator: AB3100... |
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 |
/* LDO registers and some handy masking definitions for AB3100 */ #define AB3100_LDO_A 0x40 #define AB3100_LDO_C 0x41 #define AB3100_LDO_D 0x42 #define AB3100_LDO_E 0x43 #define AB3100_LDO_E_SLEEP 0x44 #define AB3100_LDO_F 0x45 #define AB3100_LDO_G 0x46 #define AB3100_LDO_H 0x47 #define AB3100_LDO_H_SLEEP_MODE 0 #define AB3100_LDO_H_SLEEP_EN 2 #define AB3100_LDO_ON 4 #define AB3100_LDO_H_VSEL_AC 5 #define AB3100_LDO_K 0x48 #define AB3100_LDO_EXT 0x49 #define AB3100_BUCK 0x4A #define AB3100_BUCK_SLEEP 0x4B #define AB3100_REG_ON_MASK 0x10 /** * struct ab3100_regulator * A struct passed around the individual regulator functions * @platform_device: platform device holding this regulator |
fa661258a mfd: AB3100 regis... |
44 |
* @dev: handle to the device |
d619bc143 regulator: AB3100... |
45 46 47 48 49 50 51 52 53 54 |
* @plfdata: AB3100 platform data passed in at probe time * @regreg: regulator register number in the AB3100 * @fixed_voltage: a fixed voltage for this regulator, if this * 0 the voltages array is used instead. * @typ_voltages: an array of available typical voltages for * this regulator * @voltages_len: length of the array of available voltages */ struct ab3100_regulator { struct regulator_dev *rdev; |
fa661258a mfd: AB3100 regis... |
55 |
struct device *dev; |
d619bc143 regulator: AB3100... |
56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 |
struct ab3100_platform_data *plfdata; u8 regreg; int fixed_voltage; int const *typ_voltages; u8 voltages_len; }; /* The order in which registers are initialized */ static const u8 ab3100_reg_init_order[AB3100_NUM_REGULATORS+2] = { AB3100_LDO_A, AB3100_LDO_C, AB3100_LDO_E, AB3100_LDO_E_SLEEP, AB3100_LDO_F, AB3100_LDO_G, AB3100_LDO_H, AB3100_LDO_K, AB3100_LDO_EXT, AB3100_BUCK, AB3100_BUCK_SLEEP, AB3100_LDO_D, }; /* Preset (hardware defined) voltages for these regulators */ #define LDO_A_VOLTAGE 2750000 #define LDO_C_VOLTAGE 2650000 #define LDO_D_VOLTAGE 2650000 |
9992ef40f regulator: Remove... |
83 |
static const int ldo_e_buck_typ_voltages[] = { |
d619bc143 regulator: AB3100... |
84 85 86 87 88 89 90 91 |
1800000, 1400000, 1300000, 1200000, 1100000, 1050000, 900000, }; |
9992ef40f regulator: Remove... |
92 |
static const int ldo_f_typ_voltages[] = { |
d619bc143 regulator: AB3100... |
93 94 95 96 97 98 99 100 101 |
1800000, 1400000, 1300000, 1200000, 1100000, 1050000, 2500000, 2650000, }; |
9992ef40f regulator: Remove... |
102 |
static const int ldo_g_typ_voltages[] = { |
d619bc143 regulator: AB3100... |
103 104 105 106 107 |
2850000, 2750000, 1800000, 1500000, }; |
9992ef40f regulator: Remove... |
108 |
static const int ldo_h_typ_voltages[] = { |
d619bc143 regulator: AB3100... |
109 110 111 112 113 |
2750000, 1800000, 1500000, 1200000, }; |
9992ef40f regulator: Remove... |
114 |
static const int ldo_k_typ_voltages[] = { |
d619bc143 regulator: AB3100... |
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 |
2750000, 1800000, }; /* The regulator devices */ static struct ab3100_regulator ab3100_regulators[AB3100_NUM_REGULATORS] = { { .regreg = AB3100_LDO_A, .fixed_voltage = LDO_A_VOLTAGE, }, { .regreg = AB3100_LDO_C, .fixed_voltage = LDO_C_VOLTAGE, }, { .regreg = AB3100_LDO_D, .fixed_voltage = LDO_D_VOLTAGE, }, { .regreg = AB3100_LDO_E, .typ_voltages = ldo_e_buck_typ_voltages, .voltages_len = ARRAY_SIZE(ldo_e_buck_typ_voltages), }, { .regreg = AB3100_LDO_F, .typ_voltages = ldo_f_typ_voltages, .voltages_len = ARRAY_SIZE(ldo_f_typ_voltages), }, { .regreg = AB3100_LDO_G, .typ_voltages = ldo_g_typ_voltages, .voltages_len = ARRAY_SIZE(ldo_g_typ_voltages), }, { .regreg = AB3100_LDO_H, .typ_voltages = ldo_h_typ_voltages, .voltages_len = ARRAY_SIZE(ldo_h_typ_voltages), }, { .regreg = AB3100_LDO_K, .typ_voltages = ldo_k_typ_voltages, .voltages_len = ARRAY_SIZE(ldo_k_typ_voltages), }, { .regreg = AB3100_LDO_EXT, /* No voltages for the external regulator */ }, { .regreg = AB3100_BUCK, .typ_voltages = ldo_e_buck_typ_voltages, .voltages_len = ARRAY_SIZE(ldo_e_buck_typ_voltages), }, }; /* * General functions for enable, disable and is_enabled used for * LDO: A,C,E,F,G,H,K,EXT and BUCK */ static int ab3100_enable_regulator(struct regulator_dev *reg) { struct ab3100_regulator *abreg = reg->reg_data; int err; u8 regval; |
fa661258a mfd: AB3100 regis... |
180 |
err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg, |
d619bc143 regulator: AB3100... |
181 182 183 184 185 186 187 188 189 190 191 192 193 |
®val); if (err) { dev_warn(®->dev, "failed to get regid %d value ", abreg->regreg); return err; } /* The regulator is already on, no reason to go further */ if (regval & AB3100_REG_ON_MASK) return 0; regval |= AB3100_REG_ON_MASK; |
fa661258a mfd: AB3100 regis... |
194 |
err = abx500_set_register_interruptible(abreg->dev, 0, abreg->regreg, |
d619bc143 regulator: AB3100... |
195 196 197 198 199 200 201 |
regval); if (err) { dev_warn(®->dev, "failed to set regid %d value ", abreg->regreg); return err; } |
d619bc143 regulator: AB3100... |
202 203 204 205 206 207 208 209 210 211 212 213 214 |
return 0; } static int ab3100_disable_regulator(struct regulator_dev *reg) { struct ab3100_regulator *abreg = reg->reg_data; int err; u8 regval; /* * LDO D is a special regulator. When it is disabled, the entire * system is shut down. So this is handled specially. */ |
176f45b9c Fix some AB3100 r... |
215 216 |
pr_info("Called ab3100_disable_regulator "); |
d619bc143 regulator: AB3100... |
217 |
if (abreg->regreg == AB3100_LDO_D) { |
d619bc143 regulator: AB3100... |
218 219 |
dev_info(®->dev, "disabling LDO D - shut down system "); |
d619bc143 regulator: AB3100... |
220 |
/* Setting LDO D to 0x00 cuts the power to the SoC */ |
fa661258a mfd: AB3100 regis... |
221 |
return abx500_set_register_interruptible(abreg->dev, 0, |
d619bc143 regulator: AB3100... |
222 |
AB3100_LDO_D, 0x00U); |
d619bc143 regulator: AB3100... |
223 224 225 226 227 |
} /* * All other regulators are handled here */ |
fa661258a mfd: AB3100 regis... |
228 |
err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg, |
d619bc143 regulator: AB3100... |
229 230 231 232 233 234 235 236 |
®val); if (err) { dev_err(®->dev, "unable to get register 0x%x ", abreg->regreg); return err; } regval &= ~AB3100_REG_ON_MASK; |
fa661258a mfd: AB3100 regis... |
237 |
return abx500_set_register_interruptible(abreg->dev, 0, abreg->regreg, |
d619bc143 regulator: AB3100... |
238 239 240 241 242 243 244 245 |
regval); } static int ab3100_is_enabled_regulator(struct regulator_dev *reg) { struct ab3100_regulator *abreg = reg->reg_data; u8 regval; int err; |
fa661258a mfd: AB3100 regis... |
246 |
err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg, |
d619bc143 regulator: AB3100... |
247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 |
®val); if (err) { dev_err(®->dev, "unable to get register 0x%x ", abreg->regreg); return err; } return regval & AB3100_REG_ON_MASK; } static int ab3100_list_voltage_regulator(struct regulator_dev *reg, unsigned selector) { struct ab3100_regulator *abreg = reg->reg_data; |
979da89a9 ab3100: fix off-b... |
262 |
if (selector >= abreg->voltages_len) |
d619bc143 regulator: AB3100... |
263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 |
return -EINVAL; return abreg->typ_voltages[selector]; } static int ab3100_get_voltage_regulator(struct regulator_dev *reg) { struct ab3100_regulator *abreg = reg->reg_data; u8 regval; int err; /* Return the voltage for fixed regulators immediately */ if (abreg->fixed_voltage) return abreg->fixed_voltage; /* * For variable types, read out setting and index into * supplied voltage list. */ |
fa661258a mfd: AB3100 regis... |
281 |
err = abx500_get_register_interruptible(abreg->dev, 0, |
d619bc143 regulator: AB3100... |
282 283 284 285 286 287 288 289 290 291 292 293 |
abreg->regreg, ®val); if (err) { dev_warn(®->dev, "failed to get regulator value in register %02x ", abreg->regreg); return err; } /* The 3 highest bits index voltages */ regval &= 0xE0; regval >>= 5; |
979da89a9 ab3100: fix off-b... |
294 |
if (regval >= abreg->voltages_len) { |
d619bc143 regulator: AB3100... |
295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 |
dev_err(®->dev, "regulator register %02x contains an illegal voltage setting ", abreg->regreg); return -EINVAL; } return abreg->typ_voltages[regval]; } static int ab3100_get_best_voltage_index(struct regulator_dev *reg, int min_uV, int max_uV) { struct ab3100_regulator *abreg = reg->reg_data; int i; int bestmatch; int bestindex; /* * Locate the minimum voltage fitting the criteria on * this regulator. The switchable voltages are not * in strict falling order so we need to check them * all for the best match. */ bestmatch = INT_MAX; bestindex = -1; for (i = 0; i < abreg->voltages_len; i++) { if (abreg->typ_voltages[i] <= max_uV && abreg->typ_voltages[i] >= min_uV && abreg->typ_voltages[i] < bestmatch) { bestmatch = abreg->typ_voltages[i]; bestindex = i; } } if (bestindex < 0) { dev_warn(®->dev, "requested %d<=x<=%d uV, out of range! ", min_uV, max_uV); return -EINVAL; } return bestindex; } static int ab3100_set_voltage_regulator(struct regulator_dev *reg, |
3a93f2a9f regulator: Report... |
340 341 |
int min_uV, int max_uV, unsigned *selector) |
d619bc143 regulator: AB3100... |
342 343 344 345 346 347 348 349 350 |
{ struct ab3100_regulator *abreg = reg->reg_data; u8 regval; int err; int bestindex; bestindex = ab3100_get_best_voltage_index(reg, min_uV, max_uV); if (bestindex < 0) return bestindex; |
3a93f2a9f regulator: Report... |
351 |
*selector = bestindex; |
fa661258a mfd: AB3100 regis... |
352 |
err = abx500_get_register_interruptible(abreg->dev, 0, |
d619bc143 regulator: AB3100... |
353 354 355 356 357 358 359 360 361 362 363 364 |
abreg->regreg, ®val); if (err) { dev_warn(®->dev, "failed to get regulator register %02x ", abreg->regreg); return err; } /* The highest three bits control the variable regulators */ regval &= ~0xE0; regval |= (bestindex << 5); |
fa661258a mfd: AB3100 regis... |
365 |
err = abx500_set_register_interruptible(abreg->dev, 0, |
d619bc143 regulator: AB3100... |
366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 |
abreg->regreg, regval); if (err) dev_warn(®->dev, "failed to set regulator register %02x ", abreg->regreg); return err; } static int ab3100_set_suspend_voltage_regulator(struct regulator_dev *reg, int uV) { struct ab3100_regulator *abreg = reg->reg_data; u8 regval; int err; int bestindex; u8 targetreg; if (abreg->regreg == AB3100_LDO_E) targetreg = AB3100_LDO_E_SLEEP; else if (abreg->regreg == AB3100_BUCK) targetreg = AB3100_BUCK_SLEEP; else return -EINVAL; /* LDO E and BUCK have special suspend voltages you can set */ bestindex = ab3100_get_best_voltage_index(reg, uV, uV); |
fa661258a mfd: AB3100 regis... |
393 |
err = abx500_get_register_interruptible(abreg->dev, 0, |
d619bc143 regulator: AB3100... |
394 395 396 397 398 399 400 401 402 403 404 405 |
targetreg, ®val); if (err) { dev_warn(®->dev, "failed to get regulator register %02x ", targetreg); return err; } /* The highest three bits control the variable regulators */ regval &= ~0xE0; regval |= (bestindex << 5); |
fa661258a mfd: AB3100 regis... |
406 |
err = abx500_set_register_interruptible(abreg->dev, 0, |
d619bc143 regulator: AB3100... |
407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 |
targetreg, regval); if (err) dev_warn(®->dev, "failed to set regulator register %02x ", abreg->regreg); return err; } /* * The external regulator can just define a fixed voltage. */ static int ab3100_get_voltage_regulator_external(struct regulator_dev *reg) { struct ab3100_regulator *abreg = reg->reg_data; return abreg->plfdata->external_voltage; } |
19c988259 regulator: switch... |
425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 |
static int ab3100_enable_time_regulator(struct regulator_dev *reg) { struct ab3100_regulator *abreg = reg->reg_data; /* Per-regulator power on delay from spec */ switch (abreg->regreg) { case AB3100_LDO_A: /* Fallthrough */ case AB3100_LDO_C: /* Fallthrough */ case AB3100_LDO_D: /* Fallthrough */ case AB3100_LDO_E: /* Fallthrough */ case AB3100_LDO_H: /* Fallthrough */ case AB3100_LDO_K: return 200; case AB3100_LDO_F: return 600; case AB3100_LDO_G: return 400; case AB3100_BUCK: return 1000; default: break; } return 0; } |
d619bc143 regulator: AB3100... |
449 450 451 452 453 |
static struct regulator_ops regulator_ops_fixed = { .enable = ab3100_enable_regulator, .disable = ab3100_disable_regulator, .is_enabled = ab3100_is_enabled_regulator, .get_voltage = ab3100_get_voltage_regulator, |
19c988259 regulator: switch... |
454 |
.enable_time = ab3100_enable_time_regulator, |
d619bc143 regulator: AB3100... |
455 456 457 458 459 460 461 462 463 |
}; static struct regulator_ops regulator_ops_variable = { .enable = ab3100_enable_regulator, .disable = ab3100_disable_regulator, .is_enabled = ab3100_is_enabled_regulator, .get_voltage = ab3100_get_voltage_regulator, .set_voltage = ab3100_set_voltage_regulator, .list_voltage = ab3100_list_voltage_regulator, |
19c988259 regulator: switch... |
464 |
.enable_time = ab3100_enable_time_regulator, |
d619bc143 regulator: AB3100... |
465 466 467 468 469 470 471 472 473 474 |
}; static struct regulator_ops regulator_ops_variable_sleepable = { .enable = ab3100_enable_regulator, .disable = ab3100_disable_regulator, .is_enabled = ab3100_is_enabled_regulator, .get_voltage = ab3100_get_voltage_regulator, .set_voltage = ab3100_set_voltage_regulator, .set_suspend_voltage = ab3100_set_suspend_voltage_regulator, .list_voltage = ab3100_list_voltage_regulator, |
19c988259 regulator: switch... |
475 |
.enable_time = ab3100_enable_time_regulator, |
d619bc143 regulator: AB3100... |
476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 |
}; /* * LDO EXT is an external regulator so it is really * not possible to set any voltage locally here, AB3100 * is an on/off switch plain an simple. The external * voltage is defined in the board set-up if any. */ static struct regulator_ops regulator_ops_external = { .enable = ab3100_enable_regulator, .disable = ab3100_disable_regulator, .is_enabled = ab3100_is_enabled_regulator, .get_voltage = ab3100_get_voltage_regulator_external, }; static struct regulator_desc ab3100_regulator_desc[AB3100_NUM_REGULATORS] = { { .name = "LDO_A", .id = AB3100_LDO_A, .ops = ®ulator_ops_fixed, .type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
498 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
499 500 501 502 503 504 |
}, { .name = "LDO_C", .id = AB3100_LDO_C, .ops = ®ulator_ops_fixed, .type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
505 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
506 507 508 509 510 511 |
}, { .name = "LDO_D", .id = AB3100_LDO_D, .ops = ®ulator_ops_fixed, .type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
512 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
513 514 515 516 517 |
}, { .name = "LDO_E", .id = AB3100_LDO_E, .ops = ®ulator_ops_variable_sleepable, |
75f2ba8f0 regulator: Voltag... |
518 |
.n_voltages = ARRAY_SIZE(ldo_e_buck_typ_voltages), |
d619bc143 regulator: AB3100... |
519 |
.type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
520 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
521 522 523 524 525 |
}, { .name = "LDO_F", .id = AB3100_LDO_F, .ops = ®ulator_ops_variable, |
75f2ba8f0 regulator: Voltag... |
526 |
.n_voltages = ARRAY_SIZE(ldo_f_typ_voltages), |
d619bc143 regulator: AB3100... |
527 |
.type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
528 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
529 530 531 532 533 |
}, { .name = "LDO_G", .id = AB3100_LDO_G, .ops = ®ulator_ops_variable, |
75f2ba8f0 regulator: Voltag... |
534 |
.n_voltages = ARRAY_SIZE(ldo_g_typ_voltages), |
d619bc143 regulator: AB3100... |
535 |
.type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
536 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
537 538 539 540 541 |
}, { .name = "LDO_H", .id = AB3100_LDO_H, .ops = ®ulator_ops_variable, |
75f2ba8f0 regulator: Voltag... |
542 |
.n_voltages = ARRAY_SIZE(ldo_h_typ_voltages), |
d619bc143 regulator: AB3100... |
543 |
.type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
544 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
545 546 547 548 549 |
}, { .name = "LDO_K", .id = AB3100_LDO_K, .ops = ®ulator_ops_variable, |
75f2ba8f0 regulator: Voltag... |
550 |
.n_voltages = ARRAY_SIZE(ldo_k_typ_voltages), |
d619bc143 regulator: AB3100... |
551 |
.type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
552 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
553 554 555 556 557 558 |
}, { .name = "LDO_EXT", .id = AB3100_LDO_EXT, .ops = ®ulator_ops_external, .type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
559 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
560 561 562 563 564 |
}, { .name = "BUCK", .id = AB3100_BUCK, .ops = ®ulator_ops_variable_sleepable, |
75f2ba8f0 regulator: Voltag... |
565 |
.n_voltages = ARRAY_SIZE(ldo_e_buck_typ_voltages), |
d619bc143 regulator: AB3100... |
566 |
.type = REGULATOR_VOLTAGE, |
64714354a Regulators: ab310... |
567 |
.owner = THIS_MODULE, |
d619bc143 regulator: AB3100... |
568 569 570 571 572 573 574 575 |
}, }; /* * NOTE: the following functions are regulators pluralis - it is the * binding to the AB3100 core driver and the parent platform device * for all the different regulators. */ |
98bf7c057 Regulators: ab310... |
576 |
static int __devinit ab3100_regulators_probe(struct platform_device *pdev) |
d619bc143 regulator: AB3100... |
577 |
{ |
a771e36e1 mfd: Use mfd cell... |
578 |
struct ab3100_platform_data *plfdata = pdev->dev.platform_data; |
d619bc143 regulator: AB3100... |
579 580 581 582 583 |
int err = 0; u8 data; int i; /* Check chip state */ |
fa661258a mfd: AB3100 regis... |
584 |
err = abx500_get_register_interruptible(&pdev->dev, 0, |
d619bc143 regulator: AB3100... |
585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 |
AB3100_LDO_D, &data); if (err) { dev_err(&pdev->dev, "could not read initial status of LDO_D "); return err; } if (data & 0x10) dev_notice(&pdev->dev, "chip is already in active mode (Warm start) "); else dev_notice(&pdev->dev, "chip is in inactive mode (Cold start) "); /* Set up regulators */ for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) { |
fa661258a mfd: AB3100 regis... |
602 |
err = abx500_set_register_interruptible(&pdev->dev, 0, |
d619bc143 regulator: AB3100... |
603 604 605 606 607 608 609 610 611 |
ab3100_reg_init_order[i], plfdata->reg_initvals[i]); if (err) { dev_err(&pdev->dev, "regulator initialization failed with error %d ", err); return err; } } |
d619bc143 regulator: AB3100... |
612 613 614 615 616 617 618 619 620 621 622 623 |
/* Register the regulators */ for (i = 0; i < AB3100_NUM_REGULATORS; i++) { struct ab3100_regulator *reg = &ab3100_regulators[i]; struct regulator_dev *rdev; /* * Initialize per-regulator struct. * Inherit platform data, this comes down from the * i2c boarddata, from the machine. So if you want to * see what it looks like for a certain machine, go * into the machine I2C setup. */ |
fa661258a mfd: AB3100 regis... |
624 |
reg->dev = &pdev->dev; |
d619bc143 regulator: AB3100... |
625 626 627 628 629 630 631 632 633 |
reg->plfdata = plfdata; /* * Register the regulator, pass around * the ab3100_regulator struct */ rdev = regulator_register(&ab3100_regulator_desc[i], &pdev->dev, &plfdata->reg_constraints[i], |
2c043bcbf regulator: pass a... |
634 |
reg, NULL); |
d619bc143 regulator: AB3100... |
635 636 637 638 639 640 641 642 |
if (IS_ERR(rdev)) { err = PTR_ERR(rdev); dev_err(&pdev->dev, "%s: failed to register regulator %s err %d ", __func__, ab3100_regulator_desc[i].name, err); |
d619bc143 regulator: AB3100... |
643 |
/* remove the already registered regulators */ |
b3fcf3e57 regulator: ab3100... |
644 |
while (--i >= 0) |
d619bc143 regulator: AB3100... |
645 |
regulator_unregister(ab3100_regulators[i].rdev); |
d619bc143 regulator: AB3100... |
646 647 648 649 650 651 652 653 654 |
return err; } /* Then set a pointer back to the registered regulator */ reg->rdev = rdev; } return 0; } |
98bf7c057 Regulators: ab310... |
655 |
static int __devexit ab3100_regulators_remove(struct platform_device *pdev) |
d619bc143 regulator: AB3100... |
656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 |
{ int i; for (i = 0; i < AB3100_NUM_REGULATORS; i++) { struct ab3100_regulator *reg = &ab3100_regulators[i]; regulator_unregister(reg->rdev); } return 0; } static struct platform_driver ab3100_regulators_driver = { .driver = { .name = "ab3100-regulators", .owner = THIS_MODULE, }, .probe = ab3100_regulators_probe, |
98bf7c057 Regulators: ab310... |
673 |
.remove = __devexit_p(ab3100_regulators_remove), |
d619bc143 regulator: AB3100... |
674 675 676 677 678 679 680 681 682 |
}; static __init int ab3100_regulators_init(void) { return platform_driver_register(&ab3100_regulators_driver); } static __exit void ab3100_regulators_exit(void) { |
176f45b9c Fix some AB3100 r... |
683 |
platform_driver_unregister(&ab3100_regulators_driver); |
d619bc143 regulator: AB3100... |
684 685 686 687 688 689 690 691 692 |
} subsys_initcall(ab3100_regulators_init); module_exit(ab3100_regulators_exit); MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>"); MODULE_DESCRIPTION("AB3100 Regulator driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:ab3100-regulators"); |