786 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Split TWL6030 logic from twl-regulator.c:4 * Copyright (C) 2008 David Brownell5 *6 * Copyright (C) 2016 Nicolae Rosia <nicolae.rosia@gmail.com>7 */8 9#include <linux/module.h>10#include <linux/string.h>11#include <linux/slab.h>12#include <linux/init.h>13#include <linux/err.h>14#include <linux/platform_device.h>15#include <linux/of.h>16#include <linux/regulator/driver.h>17#include <linux/regulator/machine.h>18#include <linux/regulator/of_regulator.h>19#include <linux/mfd/twl.h>20#include <linux/delay.h>21 22struct twlreg_info {23 /* start of regulator's PM_RECEIVER control register bank */24 u8 base;25 26 /* twl resource ID, for resource control state machine */27 u8 id;28 29 u8 flags;30 31 /* used by regulator core */32 struct regulator_desc desc;33 34 /* chip specific features */35 unsigned long features;36 37 /* data passed from board for external get/set voltage */38 void *data;39};40 41 42/* LDO control registers ... offset is from the base of its register bank.43 * The first three registers of all power resource banks help hardware to44 * manage the various resource groups.45 */46/* Common offset in TWL4030/6030 */47#define VREG_GRP 048/* TWL6030 register offsets */49#define VREG_TRANS 150#define VREG_STATE 251#define VREG_VOLTAGE 352#define VREG_VOLTAGE_SMPS 453/* TWL6030 Misc register offsets */54#define VREG_BC_ALL 155#define VREG_BC_REF 256#define VREG_BC_PROC 357#define VREG_BC_CLK_RST 458 59/* TWL6030 LDO register values for VREG_VOLTAGE */60#define TWL6030_VREG_VOLTAGE_WR_S BIT(7)61 62/* TWL6030 LDO register values for CFG_STATE */63#define TWL6030_CFG_STATE_OFF 0x0064#define TWL6030_CFG_STATE_ON 0x0165#define TWL6030_CFG_STATE_OFF2 0x0266#define TWL6030_CFG_STATE_SLEEP 0x0367#define TWL6030_CFG_STATE_GRP_SHIFT 568#define TWL6030_CFG_STATE_APP_SHIFT 269#define TWL6030_CFG_STATE_MASK 0x0370#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)71#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\72 TWL6030_CFG_STATE_APP_SHIFT)73 74/* Flags for SMPS Voltage reading and LDO reading*/75#define SMPS_OFFSET_EN BIT(0)76#define SMPS_EXTENDED_EN BIT(1)77#define TWL_6030_WARM_RESET BIT(3)78 79/* twl6032 SMPS EPROM values */80#define TWL6030_SMPS_OFFSET 0xB081#define TWL6030_SMPS_MULT 0xB382#define SMPS_MULTOFFSET_SMPS4 BIT(0)83#define SMPS_MULTOFFSET_VIO BIT(1)84#define SMPS_MULTOFFSET_SMPS3 BIT(6)85 86static inline int87twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)88{89 u8 value;90 int status;91 92 status = twl_i2c_read_u8(slave_subgp,93 &value, info->base + offset);94 return (status < 0) ? status : value;95}96 97static inline int98twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,99 u8 value)100{101 return twl_i2c_write_u8(slave_subgp,102 value, info->base + offset);103}104 105/* generic power resource operations, which work on all regulators */106static int twlreg_grp(struct regulator_dev *rdev)107{108 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,109 VREG_GRP);110}111 112/*113 * Enable/disable regulators by joining/leaving the P1 (processor) group.114 * We assume nobody else is updating the DEV_GRP registers.115 */116/* definition for 6030 family */117#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */118#define P2_GRP_6030 BIT(1) /* "peripherals" */119#define P1_GRP_6030 BIT(0) /* CPU/Linux */120 121static int twl6030reg_is_enabled(struct regulator_dev *rdev)122{123 struct twlreg_info *info = rdev_get_drvdata(rdev);124 int grp = 0, val;125 126 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {127 grp = twlreg_grp(rdev);128 if (grp < 0)129 return grp;130 grp &= P1_GRP_6030;131 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);132 val = TWL6030_CFG_STATE_APP(val);133 } else {134 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);135 val &= TWL6030_CFG_STATE_MASK;136 grp = 1;137 }138 139 return grp && (val == TWL6030_CFG_STATE_ON);140}141 142#define PB_I2C_BUSY BIT(0)143#define PB_I2C_BWEN BIT(1)144 145 146static int twl6030reg_enable(struct regulator_dev *rdev)147{148 struct twlreg_info *info = rdev_get_drvdata(rdev);149 int grp = 0;150 int ret;151 152 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))153 grp = twlreg_grp(rdev);154 if (grp < 0)155 return grp;156 157 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,158 grp << TWL6030_CFG_STATE_GRP_SHIFT |159 TWL6030_CFG_STATE_ON);160 return ret;161}162 163static int twl6030reg_disable(struct regulator_dev *rdev)164{165 struct twlreg_info *info = rdev_get_drvdata(rdev);166 int grp = 0;167 int ret;168 169 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))170 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;171 172 /* For 6030, set the off state for all grps enabled */173 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,174 (grp) << TWL6030_CFG_STATE_GRP_SHIFT |175 TWL6030_CFG_STATE_OFF);176 177 return ret;178}179 180static int twl6030reg_get_status(struct regulator_dev *rdev)181{182 struct twlreg_info *info = rdev_get_drvdata(rdev);183 int val;184 185 val = twlreg_grp(rdev);186 if (val < 0)187 return val;188 189 val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);190 191 if (info->features & TWL6032_SUBCLASS)192 val &= TWL6030_CFG_STATE_MASK;193 else194 val = TWL6030_CFG_STATE_APP(val);195 196 switch (val) {197 case TWL6030_CFG_STATE_ON:198 return REGULATOR_STATUS_NORMAL;199 200 case TWL6030_CFG_STATE_SLEEP:201 return REGULATOR_STATUS_STANDBY;202 203 case TWL6030_CFG_STATE_OFF:204 case TWL6030_CFG_STATE_OFF2:205 default:206 break;207 }208 209 return REGULATOR_STATUS_OFF;210}211 212static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)213{214 struct twlreg_info *info = rdev_get_drvdata(rdev);215 int grp = 0;216 int val;217 218 if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))219 grp = twlreg_grp(rdev);220 221 if (grp < 0)222 return grp;223 224 /* Compose the state register settings */225 val = grp << TWL6030_CFG_STATE_GRP_SHIFT;226 /* We can only set the mode through state machine commands... */227 switch (mode) {228 case REGULATOR_MODE_NORMAL:229 val |= TWL6030_CFG_STATE_ON;230 break;231 case REGULATOR_MODE_STANDBY:232 val |= TWL6030_CFG_STATE_SLEEP;233 break;234 235 default:236 return -EINVAL;237 }238 239 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);240}241 242static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,243 int max_uV, unsigned *selector)244{245 return -ENODEV;246}247 248static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)249{250 return -ENODEV;251}252 253static const struct regulator_ops twl6030coresmps_ops = {254 .set_voltage = twl6030coresmps_set_voltage,255 .get_voltage = twl6030coresmps_get_voltage,256};257 258static int259twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)260{261 struct twlreg_info *info = rdev_get_drvdata(rdev);262 263 if (info->flags & TWL_6030_WARM_RESET)264 selector |= TWL6030_VREG_VOLTAGE_WR_S;265 266 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,267 selector);268}269 270static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)271{272 struct twlreg_info *info = rdev_get_drvdata(rdev);273 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);274 275 if (info->flags & TWL_6030_WARM_RESET)276 vsel &= ~TWL6030_VREG_VOLTAGE_WR_S;277 278 return vsel;279}280 281static const struct regulator_ops twl6030ldo_ops = {282 .list_voltage = regulator_list_voltage_linear_range,283 284 .set_voltage_sel = twl6030ldo_set_voltage_sel,285 .get_voltage_sel = twl6030ldo_get_voltage_sel,286 287 .enable = twl6030reg_enable,288 .disable = twl6030reg_disable,289 .is_enabled = twl6030reg_is_enabled,290 291 .set_mode = twl6030reg_set_mode,292 293 .get_status = twl6030reg_get_status,294};295 296static const struct regulator_ops twl6030fixed_ops = {297 .list_voltage = regulator_list_voltage_linear,298 299 .enable = twl6030reg_enable,300 .disable = twl6030reg_disable,301 .is_enabled = twl6030reg_is_enabled,302 303 .set_mode = twl6030reg_set_mode,304 305 .get_status = twl6030reg_get_status,306};307 308/*309 * SMPS status and control310 */311 312static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)313{314 struct twlreg_info *info = rdev_get_drvdata(rdev);315 316 int voltage = 0;317 318 switch (info->flags) {319 case SMPS_OFFSET_EN:320 voltage = 100000;321 fallthrough;322 case 0:323 switch (index) {324 case 0:325 voltage = 0;326 break;327 case 58:328 voltage = 1350 * 1000;329 break;330 case 59:331 voltage = 1500 * 1000;332 break;333 case 60:334 voltage = 1800 * 1000;335 break;336 case 61:337 voltage = 1900 * 1000;338 break;339 case 62:340 voltage = 2100 * 1000;341 break;342 default:343 voltage += (600000 + (12500 * (index - 1)));344 }345 break;346 case SMPS_EXTENDED_EN:347 switch (index) {348 case 0:349 voltage = 0;350 break;351 case 58:352 voltage = 2084 * 1000;353 break;354 case 59:355 voltage = 2315 * 1000;356 break;357 case 60:358 voltage = 2778 * 1000;359 break;360 case 61:361 voltage = 2932 * 1000;362 break;363 case 62:364 voltage = 3241 * 1000;365 break;366 default:367 voltage = (1852000 + (38600 * (index - 1)));368 }369 break;370 case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:371 switch (index) {372 case 0:373 voltage = 0;374 break;375 case 58:376 voltage = 4167 * 1000;377 break;378 case 59:379 voltage = 2315 * 1000;380 break;381 case 60:382 voltage = 2778 * 1000;383 break;384 case 61:385 voltage = 2932 * 1000;386 break;387 case 62:388 voltage = 3241 * 1000;389 break;390 default:391 voltage = (2161000 + (38600 * (index - 1)));392 }393 break;394 }395 396 return voltage;397}398 399static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,400 int max_uV)401{402 struct twlreg_info *info = rdev_get_drvdata(rdev);403 int vsel = 0;404 405 switch (info->flags) {406 case 0:407 if (min_uV == 0)408 vsel = 0;409 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {410 vsel = DIV_ROUND_UP(min_uV - 600000, 12500);411 vsel++;412 }413 /* Values 1..57 for vsel are linear and can be calculated414 * values 58..62 are non linear.415 */416 else if ((min_uV > 1900000) && (min_uV <= 2100000))417 vsel = 62;418 else if ((min_uV > 1800000) && (min_uV <= 1900000))419 vsel = 61;420 else if ((min_uV > 1500000) && (min_uV <= 1800000))421 vsel = 60;422 else if ((min_uV > 1350000) && (min_uV <= 1500000))423 vsel = 59;424 else if ((min_uV > 1300000) && (min_uV <= 1350000))425 vsel = 58;426 else427 return -EINVAL;428 break;429 case SMPS_OFFSET_EN:430 if (min_uV == 0)431 vsel = 0;432 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {433 vsel = DIV_ROUND_UP(min_uV - 700000, 12500);434 vsel++;435 }436 /* Values 1..57 for vsel are linear and can be calculated437 * values 58..62 are non linear.438 */439 else if ((min_uV > 1900000) && (min_uV <= 2100000))440 vsel = 62;441 else if ((min_uV > 1800000) && (min_uV <= 1900000))442 vsel = 61;443 else if ((min_uV > 1500000) && (min_uV <= 1800000))444 vsel = 60;445 else if ((min_uV > 1350000) && (min_uV <= 1500000))446 vsel = 59;447 else448 return -EINVAL;449 break;450 case SMPS_EXTENDED_EN:451 if (min_uV == 0) {452 vsel = 0;453 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {454 vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);455 vsel++;456 }457 break;458 case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:459 if (min_uV == 0) {460 vsel = 0;461 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {462 vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);463 vsel++;464 }465 break;466 }467 468 return vsel;469}470 471static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,472 unsigned int selector)473{474 struct twlreg_info *info = rdev_get_drvdata(rdev);475 476 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,477 selector);478}479 480static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)481{482 struct twlreg_info *info = rdev_get_drvdata(rdev);483 484 return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);485}486 487static const struct regulator_ops twlsmps_ops = {488 .list_voltage = twl6030smps_list_voltage,489 .map_voltage = twl6030smps_map_voltage,490 491 .set_voltage_sel = twl6030smps_set_voltage_sel,492 .get_voltage_sel = twl6030smps_get_voltage_sel,493 494 .enable = twl6030reg_enable,495 .disable = twl6030reg_disable,496 .is_enabled = twl6030reg_is_enabled,497 498 .set_mode = twl6030reg_set_mode,499 500 .get_status = twl6030reg_get_status,501};502 503/*----------------------------------------------------------------------*/504static const struct linear_range twl6030ldo_linear_range[] = {505 REGULATOR_LINEAR_RANGE(0, 0, 0, 0),506 REGULATOR_LINEAR_RANGE(1000000, 1, 24, 100000),507 REGULATOR_LINEAR_RANGE(2750000, 31, 31, 0),508};509 510#define TWL6030_ADJUSTABLE_SMPS(label) \511static const struct twlreg_info TWL6030_INFO_##label = { \512 .desc = { \513 .name = #label, \514 .id = TWL6030_REG_##label, \515 .ops = &twl6030coresmps_ops, \516 .type = REGULATOR_VOLTAGE, \517 .owner = THIS_MODULE, \518 }, \519 }520 521#define TWL6030_ADJUSTABLE_LDO(label, offset) \522static const struct twlreg_info TWL6030_INFO_##label = { \523 .base = offset, \524 .desc = { \525 .name = #label, \526 .id = TWL6030_REG_##label, \527 .n_voltages = 32, \528 .linear_ranges = twl6030ldo_linear_range, \529 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \530 .ops = &twl6030ldo_ops, \531 .type = REGULATOR_VOLTAGE, \532 .owner = THIS_MODULE, \533 }, \534 }535 536#define TWL6032_ADJUSTABLE_LDO(label, offset) \537static const struct twlreg_info TWL6032_INFO_##label = { \538 .base = offset, \539 .features = TWL6032_SUBCLASS, \540 .desc = { \541 .name = #label, \542 .id = TWL6032_REG_##label, \543 .n_voltages = 32, \544 .linear_ranges = twl6030ldo_linear_range, \545 .n_linear_ranges = ARRAY_SIZE(twl6030ldo_linear_range), \546 .ops = &twl6030ldo_ops, \547 .type = REGULATOR_VOLTAGE, \548 .owner = THIS_MODULE, \549 }, \550 }551 552#define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \553static const struct twlreg_info TWLFIXED_INFO_##label = { \554 .base = offset, \555 .id = 0, \556 .desc = { \557 .name = #label, \558 .id = TWL6030##_REG_##label, \559 .n_voltages = 1, \560 .ops = &twl6030fixed_ops, \561 .type = REGULATOR_VOLTAGE, \562 .owner = THIS_MODULE, \563 .min_uV = mVolts * 1000, \564 .enable_time = turnon_delay, \565 .of_map_mode = NULL, \566 }, \567 }568 569#define TWL6032_ADJUSTABLE_SMPS(label, offset) \570static const struct twlreg_info TWLSMPS_INFO_##label = { \571 .base = offset, \572 .features = TWL6032_SUBCLASS, \573 .desc = { \574 .name = #label, \575 .id = TWL6032_REG_##label, \576 .n_voltages = 63, \577 .ops = &twlsmps_ops, \578 .type = REGULATOR_VOLTAGE, \579 .owner = THIS_MODULE, \580 }, \581 }582 583/* VUSBCP is managed *only* by the USB subchip */584/* 6030 REG with base as PMC Slave Misc : 0x0030 */585/* Turnon-delay and remap configuration values for 6030 are not586 verified since the specification is not public */587TWL6030_ADJUSTABLE_SMPS(VDD1);588TWL6030_ADJUSTABLE_SMPS(VDD2);589TWL6030_ADJUSTABLE_SMPS(VDD3);590TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54);591TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58);592TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c);593TWL6030_ADJUSTABLE_LDO(VMMC, 0x68);594TWL6030_ADJUSTABLE_LDO(VPP, 0x6c);595TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74);596/* 6025 are renamed compared to 6030 versions */597TWL6032_ADJUSTABLE_LDO(LDO2, 0x54);598TWL6032_ADJUSTABLE_LDO(LDO4, 0x58);599TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c);600TWL6032_ADJUSTABLE_LDO(LDO5, 0x68);601TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c);602TWL6032_ADJUSTABLE_LDO(LDO7, 0x74);603TWL6032_ADJUSTABLE_LDO(LDO6, 0x60);604TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64);605TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70);606TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);607TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);608TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);609TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);610TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);611TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);612TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);613TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);614TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);615 616static u8 twl_get_smps_offset(void)617{618 u8 value;619 620 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,621 TWL6030_SMPS_OFFSET);622 return value;623}624 625static u8 twl_get_smps_mult(void)626{627 u8 value;628 629 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,630 TWL6030_SMPS_MULT);631 return value;632}633 634#define TWL_OF_MATCH(comp, family, label) \635 { \636 .compatible = comp, \637 .data = &family##_INFO_##label, \638 }639 640#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)641#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)642#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)643#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)644 645static const struct of_device_id twl_of_match[] = {646 TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),647 TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),648 TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),649 TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),650 TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),651 TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),652 TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),653 TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),654 TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),655 TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),656 TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),657 TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),658 TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),659 TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),660 TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),661 TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),662 TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),663 TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),664 TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),665 TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),666 TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),667 TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),668 TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),669 TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),670 TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),671 TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),672 TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),673 {},674};675MODULE_DEVICE_TABLE(of, twl_of_match);676 677static int twlreg_probe(struct platform_device *pdev)678{679 int id;680 struct twlreg_info *info;681 const struct twlreg_info *template;682 struct regulator_init_data *initdata;683 struct regulation_constraints *c;684 struct regulator_dev *rdev;685 struct regulator_config config = { };686 struct device_node *np = pdev->dev.of_node;687 688 template = of_device_get_match_data(&pdev->dev);689 if (!template)690 return -ENODEV;691 692 id = template->desc.id;693 initdata = of_get_regulator_init_data(&pdev->dev, np, &template->desc);694 if (!initdata)695 return -EINVAL;696 697 info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);698 if (!info)699 return -ENOMEM;700 701 /* Constrain board-specific capabilities according to what702 * this driver and the chip itself can actually do.703 */704 c = &initdata->constraints;705 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;706 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE707 | REGULATOR_CHANGE_MODE708 | REGULATOR_CHANGE_STATUS;709 710 switch (id) {711 case TWL6032_REG_SMPS3:712 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)713 info->flags |= SMPS_EXTENDED_EN;714 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)715 info->flags |= SMPS_OFFSET_EN;716 break;717 case TWL6032_REG_SMPS4:718 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)719 info->flags |= SMPS_EXTENDED_EN;720 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)721 info->flags |= SMPS_OFFSET_EN;722 break;723 case TWL6032_REG_VIO:724 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)725 info->flags |= SMPS_EXTENDED_EN;726 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)727 info->flags |= SMPS_OFFSET_EN;728 break;729 }730 731 if (of_property_read_bool(np, "ti,retain-on-reset"))732 info->flags |= TWL_6030_WARM_RESET;733 734 config.dev = &pdev->dev;735 config.init_data = initdata;736 config.driver_data = info;737 config.of_node = np;738 739 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);740 if (IS_ERR(rdev)) {741 dev_err(&pdev->dev, "can't register %s, %ld\n",742 info->desc.name, PTR_ERR(rdev));743 return PTR_ERR(rdev);744 }745 platform_set_drvdata(pdev, rdev);746 747 /* NOTE: many regulators support short-circuit IRQs (presentable748 * as REGULATOR_OVER_CURRENT notifications?) configured via:749 * - SC_CONFIG750 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)751 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)752 * - IT_CONFIG753 */754 755 return 0;756}757 758MODULE_ALIAS("platform:twl6030_reg");759 760static struct platform_driver twlreg_driver = {761 .probe = twlreg_probe,762 /* NOTE: short name, to work around driver model truncation of763 * "twl_regulator.12" (and friends) to "twl_regulator.1".764 */765 .driver = {766 .name = "twl6030_reg",767 .probe_type = PROBE_PREFER_ASYNCHRONOUS,768 .of_match_table = of_match_ptr(twl_of_match),769 },770};771 772static int __init twlreg_init(void)773{774 return platform_driver_register(&twlreg_driver);775}776subsys_initcall(twlreg_init);777 778static void __exit twlreg_exit(void)779{780 platform_driver_unregister(&twlreg_driver);781}782module_exit(twlreg_exit)783 784MODULE_DESCRIPTION("TWL6030 regulator driver");785MODULE_LICENSE("GPL");786