1 /* 2 * Copyright (C) ST-Ericsson SA 2010 3 * 4 * License Terms: GNU General Public License v2 5 * 6 * Authors: Bengt Jonsson <bengt.g.jonsson@stericsson.com> 7 * 8 * This file is based on drivers/regulator/ab8500.c 9 * 10 * AB8500 external regulators 11 * 12 * ab8500-ext supports the following regulators: 13 * - VextSupply3 14 */ 15 #include <linux/init.h> 16 #include <linux/kernel.h> 17 #include <linux/err.h> 18 #include <linux/module.h> 19 #include <linux/of.h> 20 #include <linux/platform_device.h> 21 #include <linux/regulator/driver.h> 22 #include <linux/regulator/machine.h> 23 #include <linux/regulator/of_regulator.h> 24 #include <linux/mfd/abx500.h> 25 #include <linux/mfd/abx500/ab8500.h> 26 #include <linux/regulator/ab8500.h> 27 28 static struct regulator_consumer_supply ab8500_vaux1_consumers[] = { 29 /* Main display, u8500 R3 uib */ 30 REGULATOR_SUPPLY("vddi", "mcde_disp_sony_acx424akp.0"), 31 /* Main display, u8500 uib and ST uib */ 32 REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.0"), 33 /* Secondary display, ST uib */ 34 REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.1"), 35 /* SFH7741 proximity sensor */ 36 REGULATOR_SUPPLY("vcc", "gpio-keys.0"), 37 /* BH1780GLS ambient light sensor */ 38 REGULATOR_SUPPLY("vcc", "2-0029"), 39 /* lsm303dlh accelerometer */ 40 REGULATOR_SUPPLY("vdd", "2-0018"), 41 /* lsm303dlhc accelerometer */ 42 REGULATOR_SUPPLY("vdd", "2-0019"), 43 /* lsm303dlh magnetometer */ 44 REGULATOR_SUPPLY("vdd", "2-001e"), 45 /* Rohm BU21013 Touchscreen devices */ 46 REGULATOR_SUPPLY("avdd", "3-005c"), 47 REGULATOR_SUPPLY("avdd", "3-005d"), 48 /* Synaptics RMI4 Touchscreen device */ 49 REGULATOR_SUPPLY("vdd", "3-004b"), 50 /* L3G4200D Gyroscope device */ 51 REGULATOR_SUPPLY("vdd", "2-0068"), 52 /* Ambient light sensor device */ 53 REGULATOR_SUPPLY("vdd", "3-0029"), 54 /* Pressure sensor device */ 55 REGULATOR_SUPPLY("vdd", "2-005c"), 56 /* Cypress TrueTouch Touchscreen device */ 57 REGULATOR_SUPPLY("vcpin", "spi8.0"), 58 /* Camera device */ 59 REGULATOR_SUPPLY("vaux12v5", "mmio_camera"), 60 }; 61 62 static struct regulator_consumer_supply ab8500_vaux2_consumers[] = { 63 /* On-board eMMC power */ 64 REGULATOR_SUPPLY("vmmc", "sdi4"), 65 /* AB8500 audio codec */ 66 REGULATOR_SUPPLY("vcc-N2158", "ab8500-codec.0"), 67 /* AB8500 accessory detect 1 */ 68 REGULATOR_SUPPLY("vcc-N2158", "ab8500-acc-det.0"), 69 /* AB8500 Tv-out device */ 70 REGULATOR_SUPPLY("vcc-N2158", "mcde_tv_ab8500.4"), 71 /* AV8100 HDMI device */ 72 REGULATOR_SUPPLY("vcc-N2158", "av8100_hdmi.3"), 73 }; 74 75 static struct regulator_consumer_supply ab8500_vaux3_consumers[] = { 76 REGULATOR_SUPPLY("v-SD-STM", "stm"), 77 /* External MMC slot power */ 78 REGULATOR_SUPPLY("vmmc", "sdi0"), 79 }; 80 81 static struct regulator_consumer_supply ab8500_vtvout_consumers[] = { 82 /* TV-out DENC supply */ 83 REGULATOR_SUPPLY("vtvout", "ab8500-denc.0"), 84 /* Internal general-purpose ADC */ 85 REGULATOR_SUPPLY("vddadc", "ab8500-gpadc.0"), 86 /* ADC for charger */ 87 REGULATOR_SUPPLY("vddadc", "ab8500-charger.0"), 88 /* AB8500 Tv-out device */ 89 REGULATOR_SUPPLY("vtvout", "mcde_tv_ab8500.4"), 90 }; 91 92 static struct regulator_consumer_supply ab8500_vaud_consumers[] = { 93 /* AB8500 audio-codec main supply */ 94 REGULATOR_SUPPLY("vaud", "ab8500-codec.0"), 95 }; 96 97 static struct regulator_consumer_supply ab8500_vamic1_consumers[] = { 98 /* AB8500 audio-codec Mic1 supply */ 99 REGULATOR_SUPPLY("vamic1", "ab8500-codec.0"), 100 }; 101 102 static struct regulator_consumer_supply ab8500_vamic2_consumers[] = { 103 /* AB8500 audio-codec Mic2 supply */ 104 REGULATOR_SUPPLY("vamic2", "ab8500-codec.0"), 105 }; 106 107 static struct regulator_consumer_supply ab8500_vdmic_consumers[] = { 108 /* AB8500 audio-codec DMic supply */ 109 REGULATOR_SUPPLY("vdmic", "ab8500-codec.0"), 110 }; 111 112 static struct regulator_consumer_supply ab8500_vintcore_consumers[] = { 113 /* SoC core supply, no device */ 114 REGULATOR_SUPPLY("v-intcore", NULL), 115 /* USB Transceiver */ 116 REGULATOR_SUPPLY("vddulpivio18", "ab8500-usb.0"), 117 /* Handled by abx500 clk driver */ 118 REGULATOR_SUPPLY("v-intcore", "abx500-clk.0"), 119 }; 120 121 static struct regulator_consumer_supply ab8500_vana_consumers[] = { 122 /* DB8500 DSI */ 123 REGULATOR_SUPPLY("vdddsi1v2", "mcde"), 124 REGULATOR_SUPPLY("vdddsi1v2", "b2r2_core"), 125 REGULATOR_SUPPLY("vdddsi1v2", "b2r2_1_core"), 126 REGULATOR_SUPPLY("vdddsi1v2", "dsilink.0"), 127 REGULATOR_SUPPLY("vdddsi1v2", "dsilink.1"), 128 REGULATOR_SUPPLY("vdddsi1v2", "dsilink.2"), 129 /* DB8500 CSI */ 130 REGULATOR_SUPPLY("vddcsi1v2", "mmio_camera"), 131 }; 132 133 /* ab8500 regulator register initialization */ 134 static struct ab8500_regulator_reg_init ab8500_reg_init[] = { 135 /* 136 * VanaRequestCtrl = HP/LP depending on VxRequest 137 * VextSupply1RequestCtrl = HP/LP depending on VxRequest 138 */ 139 INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL2, 0xf0, 0x00), 140 /* 141 * VextSupply2RequestCtrl = HP/LP depending on VxRequest 142 * VextSupply3RequestCtrl = HP/LP depending on VxRequest 143 * Vaux1RequestCtrl = HP/LP depending on VxRequest 144 * Vaux2RequestCtrl = HP/LP depending on VxRequest 145 */ 146 INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL3, 0xff, 0x00), 147 /* 148 * Vaux3RequestCtrl = HP/LP depending on VxRequest 149 * SwHPReq = Control through SWValid disabled 150 */ 151 INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL4, 0x07, 0x00), 152 /* 153 * VanaSysClkReq1HPValid = disabled 154 * Vaux1SysClkReq1HPValid = disabled 155 * Vaux2SysClkReq1HPValid = disabled 156 * Vaux3SysClkReq1HPValid = disabled 157 */ 158 INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID1, 0xe8, 0x00), 159 /* 160 * VextSupply1SysClkReq1HPValid = disabled 161 * VextSupply2SysClkReq1HPValid = disabled 162 * VextSupply3SysClkReq1HPValid = SysClkReq1 controlled 163 */ 164 INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID2, 0x70, 0x40), 165 /* 166 * VanaHwHPReq1Valid = disabled 167 * Vaux1HwHPreq1Valid = disabled 168 * Vaux2HwHPReq1Valid = disabled 169 * Vaux3HwHPReqValid = disabled 170 */ 171 INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID1, 0xe8, 0x00), 172 /* 173 * VextSupply1HwHPReq1Valid = disabled 174 * VextSupply2HwHPReq1Valid = disabled 175 * VextSupply3HwHPReq1Valid = disabled 176 */ 177 INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID2, 0x07, 0x00), 178 /* 179 * VanaHwHPReq2Valid = disabled 180 * Vaux1HwHPReq2Valid = disabled 181 * Vaux2HwHPReq2Valid = disabled 182 * Vaux3HwHPReq2Valid = disabled 183 */ 184 INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID1, 0xe8, 0x00), 185 /* 186 * VextSupply1HwHPReq2Valid = disabled 187 * VextSupply2HwHPReq2Valid = disabled 188 * VextSupply3HwHPReq2Valid = HWReq2 controlled 189 */ 190 INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID2, 0x07, 0x04), 191 /* 192 * VanaSwHPReqValid = disabled 193 * Vaux1SwHPReqValid = disabled 194 */ 195 INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID1, 0xa0, 0x00), 196 /* 197 * Vaux2SwHPReqValid = disabled 198 * Vaux3SwHPReqValid = disabled 199 * VextSupply1SwHPReqValid = disabled 200 * VextSupply2SwHPReqValid = disabled 201 * VextSupply3SwHPReqValid = disabled 202 */ 203 INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID2, 0x1f, 0x00), 204 /* 205 * SysClkReq2Valid1 = SysClkReq2 controlled 206 * SysClkReq3Valid1 = disabled 207 * SysClkReq4Valid1 = SysClkReq4 controlled 208 * SysClkReq5Valid1 = disabled 209 * SysClkReq6Valid1 = SysClkReq6 controlled 210 * SysClkReq7Valid1 = disabled 211 * SysClkReq8Valid1 = disabled 212 */ 213 INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID1, 0xfe, 0x2a), 214 /* 215 * SysClkReq2Valid2 = disabled 216 * SysClkReq3Valid2 = disabled 217 * SysClkReq4Valid2 = disabled 218 * SysClkReq5Valid2 = disabled 219 * SysClkReq6Valid2 = SysClkReq6 controlled 220 * SysClkReq7Valid2 = disabled 221 * SysClkReq8Valid2 = disabled 222 */ 223 INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID2, 0xfe, 0x20), 224 /* 225 * VTVoutEna = disabled 226 * Vintcore12Ena = disabled 227 * Vintcore12Sel = 1.25 V 228 * Vintcore12LP = inactive (HP) 229 * VTVoutLP = inactive (HP) 230 */ 231 INIT_REGULATOR_REGISTER(AB8500_REGUMISC1, 0xfe, 0x10), 232 /* 233 * VaudioEna = disabled 234 * VdmicEna = disabled 235 * Vamic1Ena = disabled 236 * Vamic2Ena = disabled 237 */ 238 INIT_REGULATOR_REGISTER(AB8500_VAUDIOSUPPLY, 0x1e, 0x00), 239 /* 240 * Vamic1_dzout = high-Z when Vamic1 is disabled 241 * Vamic2_dzout = high-Z when Vamic2 is disabled 242 */ 243 INIT_REGULATOR_REGISTER(AB8500_REGUCTRL1VAMIC, 0x03, 0x00), 244 /* 245 * VPll = Hw controlled (NOTE! PRCMU bits) 246 * VanaRegu = force off 247 */ 248 INIT_REGULATOR_REGISTER(AB8500_VPLLVANAREGU, 0x0f, 0x02), 249 /* 250 * VrefDDREna = disabled 251 * VrefDDRSleepMode = inactive (no pulldown) 252 */ 253 INIT_REGULATOR_REGISTER(AB8500_VREFDDR, 0x03, 0x00), 254 /* 255 * VextSupply1Regu = force LP 256 * VextSupply2Regu = force OFF 257 * VextSupply3Regu = force HP (-> STBB2=LP and TPS=LP) 258 * ExtSupply2Bypass = ExtSupply12LPn ball is 0 when Ena is 0 259 * ExtSupply3Bypass = ExtSupply3LPn ball is 0 when Ena is 0 260 */ 261 INIT_REGULATOR_REGISTER(AB8500_EXTSUPPLYREGU, 0xff, 0x13), 262 /* 263 * Vaux1Regu = force HP 264 * Vaux2Regu = force off 265 */ 266 INIT_REGULATOR_REGISTER(AB8500_VAUX12REGU, 0x0f, 0x01), 267 /* 268 * Vaux3Regu = force off 269 */ 270 INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3REGU, 0x03, 0x00), 271 /* 272 * Vaux1Sel = 2.8 V 273 */ 274 INIT_REGULATOR_REGISTER(AB8500_VAUX1SEL, 0x0f, 0x0C), 275 /* 276 * Vaux2Sel = 2.9 V 277 */ 278 INIT_REGULATOR_REGISTER(AB8500_VAUX2SEL, 0x0f, 0x0d), 279 /* 280 * Vaux3Sel = 2.91 V 281 */ 282 INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3SEL, 0x07, 0x07), 283 /* 284 * VextSupply12LP = disabled (no LP) 285 */ 286 INIT_REGULATOR_REGISTER(AB8500_REGUCTRL2SPARE, 0x01, 0x00), 287 /* 288 * Vaux1Disch = short discharge time 289 * Vaux2Disch = short discharge time 290 * Vaux3Disch = short discharge time 291 * Vintcore12Disch = short discharge time 292 * VTVoutDisch = short discharge time 293 * VaudioDisch = short discharge time 294 */ 295 INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH, 0xfc, 0x00), 296 /* 297 * VanaDisch = short discharge time 298 * VdmicPullDownEna = pulldown disabled when Vdmic is disabled 299 * VdmicDisch = short discharge time 300 */ 301 INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH2, 0x16, 0x00), 302 }; 303 304 /* AB8500 regulators */ 305 static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = { 306 /* supplies to the display/camera */ 307 [AB8500_LDO_AUX1] = { 308 .supply_regulator = "ab8500-ext-supply3", 309 .constraints = { 310 .name = "V-DISPLAY", 311 .min_uV = 2800000, 312 .max_uV = 3300000, 313 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | 314 REGULATOR_CHANGE_STATUS, 315 .boot_on = 1, /* display is on at boot */ 316 }, 317 .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux1_consumers), 318 .consumer_supplies = ab8500_vaux1_consumers, 319 }, 320 /* supplies to the on-board eMMC */ 321 [AB8500_LDO_AUX2] = { 322 .supply_regulator = "ab8500-ext-supply3", 323 .constraints = { 324 .name = "V-eMMC1", 325 .min_uV = 1100000, 326 .max_uV = 3300000, 327 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | 328 REGULATOR_CHANGE_STATUS | 329 REGULATOR_CHANGE_MODE, 330 .valid_modes_mask = REGULATOR_MODE_NORMAL | 331 REGULATOR_MODE_IDLE, 332 }, 333 .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux2_consumers), 334 .consumer_supplies = ab8500_vaux2_consumers, 335 }, 336 /* supply for VAUX3, supplies to SDcard slots */ 337 [AB8500_LDO_AUX3] = { 338 .supply_regulator = "ab8500-ext-supply3", 339 .constraints = { 340 .name = "V-MMC-SD", 341 .min_uV = 1100000, 342 .max_uV = 3300000, 343 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | 344 REGULATOR_CHANGE_STATUS | 345 REGULATOR_CHANGE_MODE, 346 .valid_modes_mask = REGULATOR_MODE_NORMAL | 347 REGULATOR_MODE_IDLE, 348 }, 349 .num_consumer_supplies = ARRAY_SIZE(ab8500_vaux3_consumers), 350 .consumer_supplies = ab8500_vaux3_consumers, 351 }, 352 /* supply for tvout, gpadc, TVOUT LDO */ 353 [AB8500_LDO_TVOUT] = { 354 .constraints = { 355 .name = "V-TVOUT", 356 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 357 }, 358 .num_consumer_supplies = ARRAY_SIZE(ab8500_vtvout_consumers), 359 .consumer_supplies = ab8500_vtvout_consumers, 360 }, 361 /* supply for ab8500-vaudio, VAUDIO LDO */ 362 [AB8500_LDO_AUDIO] = { 363 .constraints = { 364 .name = "V-AUD", 365 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 366 }, 367 .num_consumer_supplies = ARRAY_SIZE(ab8500_vaud_consumers), 368 .consumer_supplies = ab8500_vaud_consumers, 369 }, 370 /* supply for v-anamic1 VAMic1-LDO */ 371 [AB8500_LDO_ANAMIC1] = { 372 .constraints = { 373 .name = "V-AMIC1", 374 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 375 }, 376 .num_consumer_supplies = ARRAY_SIZE(ab8500_vamic1_consumers), 377 .consumer_supplies = ab8500_vamic1_consumers, 378 }, 379 /* supply for v-amic2, VAMIC2 LDO, reuse constants for AMIC1 */ 380 [AB8500_LDO_ANAMIC2] = { 381 .constraints = { 382 .name = "V-AMIC2", 383 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 384 }, 385 .num_consumer_supplies = ARRAY_SIZE(ab8500_vamic2_consumers), 386 .consumer_supplies = ab8500_vamic2_consumers, 387 }, 388 /* supply for v-dmic, VDMIC LDO */ 389 [AB8500_LDO_DMIC] = { 390 .constraints = { 391 .name = "V-DMIC", 392 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 393 }, 394 .num_consumer_supplies = ARRAY_SIZE(ab8500_vdmic_consumers), 395 .consumer_supplies = ab8500_vdmic_consumers, 396 }, 397 /* supply for v-intcore12, VINTCORE12 LDO */ 398 [AB8500_LDO_INTCORE] = { 399 .constraints = { 400 .name = "V-INTCORE", 401 .min_uV = 1250000, 402 .max_uV = 1350000, 403 .input_uV = 1800000, 404 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | 405 REGULATOR_CHANGE_STATUS | 406 REGULATOR_CHANGE_MODE | 407 REGULATOR_CHANGE_DRMS, 408 .valid_modes_mask = REGULATOR_MODE_NORMAL | 409 REGULATOR_MODE_IDLE, 410 }, 411 .num_consumer_supplies = ARRAY_SIZE(ab8500_vintcore_consumers), 412 .consumer_supplies = ab8500_vintcore_consumers, 413 }, 414 /* supply for U8500 CSI-DSI, VANA LDO */ 415 [AB8500_LDO_ANA] = { 416 .constraints = { 417 .name = "V-CSI-DSI", 418 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 419 }, 420 .num_consumer_supplies = ARRAY_SIZE(ab8500_vana_consumers), 421 .consumer_supplies = ab8500_vana_consumers, 422 }, 423 }; 424 425 /* supply for VextSupply3 */ 426 static struct regulator_consumer_supply ab8500_ext_supply3_consumers[] = { 427 /* SIM supply for 3 V SIM cards */ 428 REGULATOR_SUPPLY("vinvsim", "sim-detect.0"), 429 }; 430 431 /* 432 * AB8500 external regulators 433 */ 434 static struct regulator_init_data ab8500_ext_regulators[] = { 435 /* fixed Vbat supplies VSMPS1_EXT_1V8 */ 436 [AB8500_EXT_SUPPLY1] = { 437 .constraints = { 438 .name = "ab8500-ext-supply1", 439 .min_uV = 1800000, 440 .max_uV = 1800000, 441 .initial_mode = REGULATOR_MODE_IDLE, 442 .boot_on = 1, 443 .always_on = 1, 444 }, 445 }, 446 /* fixed Vbat supplies VSMPS2_EXT_1V36 and VSMPS5_EXT_1V15 */ 447 [AB8500_EXT_SUPPLY2] = { 448 .constraints = { 449 .name = "ab8500-ext-supply2", 450 .min_uV = 1360000, 451 .max_uV = 1360000, 452 }, 453 }, 454 /* fixed Vbat supplies VSMPS3_EXT_3V4 and VSMPS4_EXT_3V4 */ 455 [AB8500_EXT_SUPPLY3] = { 456 .constraints = { 457 .name = "ab8500-ext-supply3", 458 .min_uV = 3400000, 459 .max_uV = 3400000, 460 .valid_ops_mask = REGULATOR_CHANGE_STATUS, 461 .boot_on = 1, 462 }, 463 .num_consumer_supplies = 464 ARRAY_SIZE(ab8500_ext_supply3_consumers), 465 .consumer_supplies = ab8500_ext_supply3_consumers, 466 }, 467 }; 468 469 static struct ab8500_regulator_platform_data ab8500_regulator_plat_data = { 470 .reg_init = ab8500_reg_init, 471 .num_reg_init = ARRAY_SIZE(ab8500_reg_init), 472 .regulator = ab8500_regulators, 473 .num_regulator = ARRAY_SIZE(ab8500_regulators), 474 .ext_regulator = ab8500_ext_regulators, 475 .num_ext_regulator = ARRAY_SIZE(ab8500_ext_regulators), 476 }; 477 478 /** 479 * struct ab8500_ext_regulator_info - ab8500 regulator information 480 * @dev: device pointer 481 * @desc: regulator description 482 * @cfg: regulator configuration (extension of regulator FW configuration) 483 * @update_bank: bank to control on/off 484 * @update_reg: register to control on/off 485 * @update_mask: mask to enable/disable and set mode of regulator 486 * @update_val: bits holding the regulator current mode 487 * @update_val_hp: bits to set EN pin active (LPn pin deactive) 488 * normally this means high power mode 489 * @update_val_lp: bits to set EN pin active and LPn pin active 490 * normally this means low power mode 491 * @update_val_hw: bits to set regulator pins in HW control 492 * SysClkReq pins and logic will choose mode 493 */ 494 struct ab8500_ext_regulator_info { 495 struct device *dev; 496 struct regulator_desc desc; 497 struct ab8500_ext_regulator_cfg *cfg; 498 u8 update_bank; 499 u8 update_reg; 500 u8 update_mask; 501 u8 update_val; 502 u8 update_val_hp; 503 u8 update_val_lp; 504 u8 update_val_hw; 505 }; 506 507 static int ab8500_ext_regulator_enable(struct regulator_dev *rdev) 508 { 509 int ret; 510 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); 511 u8 regval; 512 513 if (info == NULL) { 514 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); 515 return -EINVAL; 516 } 517 518 /* 519 * To satisfy both HW high power request and SW request, the regulator 520 * must be on in high power. 521 */ 522 if (info->cfg && info->cfg->hwreq) 523 regval = info->update_val_hp; 524 else 525 regval = info->update_val; 526 527 ret = abx500_mask_and_set_register_interruptible(info->dev, 528 info->update_bank, info->update_reg, 529 info->update_mask, regval); 530 if (ret < 0) { 531 dev_err(rdev_get_dev(rdev), 532 "couldn't set enable bits for regulator\n"); 533 return ret; 534 } 535 536 dev_dbg(rdev_get_dev(rdev), 537 "%s-enable (bank, reg, mask, value): 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", 538 info->desc.name, info->update_bank, info->update_reg, 539 info->update_mask, regval); 540 541 return 0; 542 } 543 544 static int ab8500_ext_regulator_disable(struct regulator_dev *rdev) 545 { 546 int ret; 547 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); 548 u8 regval; 549 550 if (info == NULL) { 551 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); 552 return -EINVAL; 553 } 554 555 /* 556 * Set the regulator in HW request mode if configured 557 */ 558 if (info->cfg && info->cfg->hwreq) 559 regval = info->update_val_hw; 560 else 561 regval = 0; 562 563 ret = abx500_mask_and_set_register_interruptible(info->dev, 564 info->update_bank, info->update_reg, 565 info->update_mask, regval); 566 if (ret < 0) { 567 dev_err(rdev_get_dev(rdev), 568 "couldn't set disable bits for regulator\n"); 569 return ret; 570 } 571 572 dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):" 573 " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", 574 info->desc.name, info->update_bank, info->update_reg, 575 info->update_mask, regval); 576 577 return 0; 578 } 579 580 static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev) 581 { 582 int ret; 583 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); 584 u8 regval; 585 586 if (info == NULL) { 587 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); 588 return -EINVAL; 589 } 590 591 ret = abx500_get_register_interruptible(info->dev, 592 info->update_bank, info->update_reg, ®val); 593 if (ret < 0) { 594 dev_err(rdev_get_dev(rdev), 595 "couldn't read 0x%x register\n", info->update_reg); 596 return ret; 597 } 598 599 dev_dbg(rdev_get_dev(rdev), "%s-is_enabled (bank, reg, mask, value):" 600 " 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", 601 info->desc.name, info->update_bank, info->update_reg, 602 info->update_mask, regval); 603 604 if (((regval & info->update_mask) == info->update_val_lp) || 605 ((regval & info->update_mask) == info->update_val_hp)) 606 return 1; 607 else 608 return 0; 609 } 610 611 static int ab8500_ext_regulator_set_mode(struct regulator_dev *rdev, 612 unsigned int mode) 613 { 614 int ret = 0; 615 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); 616 u8 regval; 617 618 if (info == NULL) { 619 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); 620 return -EINVAL; 621 } 622 623 switch (mode) { 624 case REGULATOR_MODE_NORMAL: 625 regval = info->update_val_hp; 626 break; 627 case REGULATOR_MODE_IDLE: 628 regval = info->update_val_lp; 629 break; 630 631 default: 632 return -EINVAL; 633 } 634 635 /* If regulator is enabled and info->cfg->hwreq is set, the regulator 636 must be on in high power, so we don't need to write the register with 637 the same value. 638 */ 639 if (ab8500_ext_regulator_is_enabled(rdev) && 640 !(info->cfg && info->cfg->hwreq)) { 641 ret = abx500_mask_and_set_register_interruptible(info->dev, 642 info->update_bank, info->update_reg, 643 info->update_mask, regval); 644 if (ret < 0) { 645 dev_err(rdev_get_dev(rdev), 646 "Could not set regulator mode.\n"); 647 return ret; 648 } 649 650 dev_dbg(rdev_get_dev(rdev), 651 "%s-set_mode (bank, reg, mask, value): " 652 "0x%x, 0x%x, 0x%x, 0x%x\n", 653 info->desc.name, info->update_bank, info->update_reg, 654 info->update_mask, regval); 655 } 656 657 info->update_val = regval; 658 659 return 0; 660 } 661 662 static unsigned int ab8500_ext_regulator_get_mode(struct regulator_dev *rdev) 663 { 664 struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev); 665 int ret; 666 667 if (info == NULL) { 668 dev_err(rdev_get_dev(rdev), "regulator info null pointer\n"); 669 return -EINVAL; 670 } 671 672 if (info->update_val == info->update_val_hp) 673 ret = REGULATOR_MODE_NORMAL; 674 else if (info->update_val == info->update_val_lp) 675 ret = REGULATOR_MODE_IDLE; 676 else 677 ret = -EINVAL; 678 679 return ret; 680 } 681 682 static int ab8500_ext_set_voltage(struct regulator_dev *rdev, int min_uV, 683 int max_uV, unsigned *selector) 684 { 685 struct regulation_constraints *regu_constraints = rdev->constraints; 686 687 if (!regu_constraints) { 688 dev_err(rdev_get_dev(rdev), "No regulator constraints\n"); 689 return -EINVAL; 690 } 691 692 if (regu_constraints->min_uV == min_uV && 693 regu_constraints->max_uV == max_uV) 694 return 0; 695 696 dev_err(rdev_get_dev(rdev), 697 "Requested min %duV max %duV != constrained min %duV max %duV\n", 698 min_uV, max_uV, 699 regu_constraints->min_uV, regu_constraints->max_uV); 700 701 return -EINVAL; 702 } 703 704 static int ab8500_ext_list_voltage(struct regulator_dev *rdev, 705 unsigned selector) 706 { 707 struct regulation_constraints *regu_constraints = rdev->constraints; 708 709 if (regu_constraints == NULL) { 710 dev_err(rdev_get_dev(rdev), "regulator constraints null pointer\n"); 711 return -EINVAL; 712 } 713 /* return the uV for the fixed regulators */ 714 if (regu_constraints->min_uV && regu_constraints->max_uV) { 715 if (regu_constraints->min_uV == regu_constraints->max_uV) 716 return regu_constraints->min_uV; 717 } 718 return -EINVAL; 719 } 720 721 static struct regulator_ops ab8500_ext_regulator_ops = { 722 .enable = ab8500_ext_regulator_enable, 723 .disable = ab8500_ext_regulator_disable, 724 .is_enabled = ab8500_ext_regulator_is_enabled, 725 .set_mode = ab8500_ext_regulator_set_mode, 726 .get_mode = ab8500_ext_regulator_get_mode, 727 .set_voltage = ab8500_ext_set_voltage, 728 .list_voltage = ab8500_ext_list_voltage, 729 }; 730 731 static struct ab8500_ext_regulator_info 732 ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = { 733 [AB8500_EXT_SUPPLY1] = { 734 .desc = { 735 .name = "VEXTSUPPLY1", 736 .ops = &ab8500_ext_regulator_ops, 737 .type = REGULATOR_VOLTAGE, 738 .id = AB8500_EXT_SUPPLY1, 739 .owner = THIS_MODULE, 740 .n_voltages = 1, 741 }, 742 .update_bank = 0x04, 743 .update_reg = 0x08, 744 .update_mask = 0x03, 745 .update_val = 0x01, 746 .update_val_hp = 0x01, 747 .update_val_lp = 0x03, 748 .update_val_hw = 0x02, 749 }, 750 [AB8500_EXT_SUPPLY2] = { 751 .desc = { 752 .name = "VEXTSUPPLY2", 753 .ops = &ab8500_ext_regulator_ops, 754 .type = REGULATOR_VOLTAGE, 755 .id = AB8500_EXT_SUPPLY2, 756 .owner = THIS_MODULE, 757 .n_voltages = 1, 758 }, 759 .update_bank = 0x04, 760 .update_reg = 0x08, 761 .update_mask = 0x0c, 762 .update_val = 0x04, 763 .update_val_hp = 0x04, 764 .update_val_lp = 0x0c, 765 .update_val_hw = 0x08, 766 }, 767 [AB8500_EXT_SUPPLY3] = { 768 .desc = { 769 .name = "VEXTSUPPLY3", 770 .ops = &ab8500_ext_regulator_ops, 771 .type = REGULATOR_VOLTAGE, 772 .id = AB8500_EXT_SUPPLY3, 773 .owner = THIS_MODULE, 774 .n_voltages = 1, 775 }, 776 .update_bank = 0x04, 777 .update_reg = 0x08, 778 .update_mask = 0x30, 779 .update_val = 0x10, 780 .update_val_hp = 0x10, 781 .update_val_lp = 0x30, 782 .update_val_hw = 0x20, 783 }, 784 }; 785 786 static struct of_regulator_match ab8500_ext_regulator_match[] = { 787 { .name = "ab8500_ext1", .driver_data = (void *) AB8500_EXT_SUPPLY1, }, 788 { .name = "ab8500_ext2", .driver_data = (void *) AB8500_EXT_SUPPLY2, }, 789 { .name = "ab8500_ext3", .driver_data = (void *) AB8500_EXT_SUPPLY3, }, 790 }; 791 792 static int ab8500_ext_regulator_probe(struct platform_device *pdev) 793 { 794 struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent); 795 struct ab8500_regulator_platform_data *pdata = &ab8500_regulator_plat_data; 796 struct device_node *np = pdev->dev.of_node; 797 struct regulator_config config = { }; 798 struct regulator_dev *rdev; 799 int i, err; 800 801 if (np) { 802 err = of_regulator_match(&pdev->dev, np, 803 ab8500_ext_regulator_match, 804 ARRAY_SIZE(ab8500_ext_regulator_match)); 805 if (err < 0) { 806 dev_err(&pdev->dev, 807 "Error parsing regulator init data: %d\n", err); 808 return err; 809 } 810 } 811 812 if (!ab8500) { 813 dev_err(&pdev->dev, "null mfd parent\n"); 814 return -EINVAL; 815 } 816 817 /* make sure the platform data has the correct size */ 818 if (pdata->num_ext_regulator != ARRAY_SIZE(ab8500_ext_regulator_info)) { 819 dev_err(&pdev->dev, "Configuration error: size mismatch.\n"); 820 return -EINVAL; 821 } 822 823 /* check for AB8500 2.x */ 824 if (is_ab8500_2p0_or_earlier(ab8500)) { 825 struct ab8500_ext_regulator_info *info; 826 827 /* VextSupply3LPn is inverted on AB8500 2.x */ 828 info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3]; 829 info->update_val = 0x30; 830 info->update_val_hp = 0x30; 831 info->update_val_lp = 0x10; 832 } 833 834 /* register all regulators */ 835 for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) { 836 struct ab8500_ext_regulator_info *info = NULL; 837 838 /* assign per-regulator data */ 839 info = &ab8500_ext_regulator_info[i]; 840 info->dev = &pdev->dev; 841 info->cfg = (struct ab8500_ext_regulator_cfg *) 842 pdata->ext_regulator[i].driver_data; 843 844 config.dev = &pdev->dev; 845 config.driver_data = info; 846 config.of_node = ab8500_ext_regulator_match[i].of_node; 847 config.init_data = (np) ? 848 ab8500_ext_regulator_match[i].init_data : 849 &pdata->ext_regulator[i]; 850 851 /* register regulator with framework */ 852 rdev = devm_regulator_register(&pdev->dev, &info->desc, 853 &config); 854 if (IS_ERR(rdev)) { 855 dev_err(&pdev->dev, "failed to register regulator %s\n", 856 info->desc.name); 857 return PTR_ERR(rdev); 858 } 859 860 dev_dbg(&pdev->dev, "%s-probed\n", info->desc.name); 861 } 862 863 return 0; 864 } 865 866 static struct platform_driver ab8500_ext_regulator_driver = { 867 .probe = ab8500_ext_regulator_probe, 868 .driver = { 869 .name = "ab8500-ext-regulator", 870 }, 871 }; 872 873 static int __init ab8500_ext_regulator_init(void) 874 { 875 int ret; 876 877 ret = platform_driver_register(&ab8500_ext_regulator_driver); 878 if (ret) 879 pr_err("Failed to register ab8500 ext regulator: %d\n", ret); 880 881 return ret; 882 } 883 subsys_initcall(ab8500_ext_regulator_init); 884 885 static void __exit ab8500_ext_regulator_exit(void) 886 { 887 platform_driver_unregister(&ab8500_ext_regulator_driver); 888 } 889 module_exit(ab8500_ext_regulator_exit); 890 891 MODULE_LICENSE("GPL v2"); 892 MODULE_AUTHOR("Bengt Jonsson <bengt.g.jonsson@stericsson.com>"); 893 MODULE_DESCRIPTION("AB8500 external regulator driver"); 894 MODULE_ALIAS("platform:ab8500-ext-regulator"); 895