Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/drivers/regulator/twl-regulator.c

  1 /*
  2  * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
  3  *
  4  * Copyright (C) 2008 David Brownell
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License as published by
  8  * the Free Software Foundation; either version 2 of the License, or
  9  * (at your option) any later version.
 10  */
 11 
 12 #include <linux/module.h>
 13 #include <linux/string.h>
 14 #include <linux/slab.h>
 15 #include <linux/init.h>
 16 #include <linux/err.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/of.h>
 19 #include <linux/of_device.h>
 20 #include <linux/regulator/driver.h>
 21 #include <linux/regulator/machine.h>
 22 #include <linux/regulator/of_regulator.h>
 23 #include <linux/i2c/twl.h>
 24 
 25 
 26 /*
 27  * The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
 28  * USB OTG transceiver, an RTC, ADC, PWM, and lots more.  Some versions
 29  * include an audio codec, battery charger, and more voltage regulators.
 30  * These chips are often used in OMAP-based systems.
 31  *
 32  * This driver implements software-based resource control for various
 33  * voltage regulators.  This is usually augmented with state machine
 34  * based control.
 35  */
 36 
 37 struct twlreg_info {
 38         /* start of regulator's PM_RECEIVER control register bank */
 39         u8                      base;
 40 
 41         /* twl resource ID, for resource control state machine */
 42         u8                      id;
 43 
 44         /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
 45         u8                      table_len;
 46         const u16               *table;
 47 
 48         /* State REMAP default configuration */
 49         u8                      remap;
 50 
 51         /* chip constraints on regulator behavior */
 52         u16                     min_mV;
 53         u16                     max_mV;
 54 
 55         u8                      flags;
 56 
 57         /* used by regulator core */
 58         struct regulator_desc   desc;
 59 
 60         /* chip specific features */
 61         unsigned long           features;
 62 
 63         /*
 64          * optional override functions for voltage set/get
 65          * these are currently only used for SMPS regulators
 66          */
 67         int                     (*get_voltage)(void *data);
 68         int                     (*set_voltage)(void *data, int target_uV);
 69 
 70         /* data passed from board for external get/set voltage */
 71         void                    *data;
 72 };
 73 
 74 
 75 /* LDO control registers ... offset is from the base of its register bank.
 76  * The first three registers of all power resource banks help hardware to
 77  * manage the various resource groups.
 78  */
 79 /* Common offset in TWL4030/6030 */
 80 #define VREG_GRP                0
 81 /* TWL4030 register offsets */
 82 #define VREG_TYPE               1
 83 #define VREG_REMAP              2
 84 #define VREG_DEDICATED          3       /* LDO control */
 85 #define VREG_VOLTAGE_SMPS_4030  9
 86 /* TWL6030 register offsets */
 87 #define VREG_TRANS              1
 88 #define VREG_STATE              2
 89 #define VREG_VOLTAGE            3
 90 #define VREG_VOLTAGE_SMPS       4
 91 /* TWL6030 Misc register offsets */
 92 #define VREG_BC_ALL             1
 93 #define VREG_BC_REF             2
 94 #define VREG_BC_PROC            3
 95 #define VREG_BC_CLK_RST         4
 96 
 97 /* TWL6030 LDO register values for CFG_STATE */
 98 #define TWL6030_CFG_STATE_OFF   0x00
 99 #define TWL6030_CFG_STATE_ON    0x01
100 #define TWL6030_CFG_STATE_OFF2  0x02
101 #define TWL6030_CFG_STATE_SLEEP 0x03
102 #define TWL6030_CFG_STATE_GRP_SHIFT     5
103 #define TWL6030_CFG_STATE_APP_SHIFT     2
104 #define TWL6030_CFG_STATE_APP_MASK      (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
105 #define TWL6030_CFG_STATE_APP(v)        (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
106                                                 TWL6030_CFG_STATE_APP_SHIFT)
107 
108 /* Flags for SMPS Voltage reading */
109 #define SMPS_OFFSET_EN          BIT(0)
110 #define SMPS_EXTENDED_EN        BIT(1)
111 
112 /* twl6032 SMPS EPROM values */
113 #define TWL6030_SMPS_OFFSET             0xB0
114 #define TWL6030_SMPS_MULT               0xB3
115 #define SMPS_MULTOFFSET_SMPS4   BIT(0)
116 #define SMPS_MULTOFFSET_VIO     BIT(1)
117 #define SMPS_MULTOFFSET_SMPS3   BIT(6)
118 
119 static inline int
120 twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
121 {
122         u8 value;
123         int status;
124 
125         status = twl_i2c_read_u8(slave_subgp,
126                         &value, info->base + offset);
127         return (status < 0) ? status : value;
128 }
129 
130 static inline int
131 twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
132                                                  u8 value)
133 {
134         return twl_i2c_write_u8(slave_subgp,
135                         value, info->base + offset);
136 }
137 
138 /*----------------------------------------------------------------------*/
139 
140 /* generic power resource operations, which work on all regulators */
141 
142 static int twlreg_grp(struct regulator_dev *rdev)
143 {
144         return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
145                                                                  VREG_GRP);
146 }
147 
148 /*
149  * Enable/disable regulators by joining/leaving the P1 (processor) group.
150  * We assume nobody else is updating the DEV_GRP registers.
151  */
152 /* definition for 4030 family */
153 #define P3_GRP_4030     BIT(7)          /* "peripherals" */
154 #define P2_GRP_4030     BIT(6)          /* secondary processor, modem, etc */
155 #define P1_GRP_4030     BIT(5)          /* CPU/Linux */
156 /* definition for 6030 family */
157 #define P3_GRP_6030     BIT(2)          /* secondary processor, modem, etc */
158 #define P2_GRP_6030     BIT(1)          /* "peripherals" */
159 #define P1_GRP_6030     BIT(0)          /* CPU/Linux */
160 
161 static int twl4030reg_is_enabled(struct regulator_dev *rdev)
162 {
163         int     state = twlreg_grp(rdev);
164 
165         if (state < 0)
166                 return state;
167 
168         return state & P1_GRP_4030;
169 }
170 
171 static int twl6030reg_is_enabled(struct regulator_dev *rdev)
172 {
173         struct twlreg_info      *info = rdev_get_drvdata(rdev);
174         int                     grp = 0, val;
175 
176         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
177                 grp = twlreg_grp(rdev);
178                 if (grp < 0)
179                         return grp;
180                 grp &= P1_GRP_6030;
181         } else {
182                 grp = 1;
183         }
184 
185         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
186         val = TWL6030_CFG_STATE_APP(val);
187 
188         return grp && (val == TWL6030_CFG_STATE_ON);
189 }
190 
191 static int twl4030reg_enable(struct regulator_dev *rdev)
192 {
193         struct twlreg_info      *info = rdev_get_drvdata(rdev);
194         int                     grp;
195         int                     ret;
196 
197         grp = twlreg_grp(rdev);
198         if (grp < 0)
199                 return grp;
200 
201         grp |= P1_GRP_4030;
202 
203         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
204 
205         return ret;
206 }
207 
208 static int twl6030reg_enable(struct regulator_dev *rdev)
209 {
210         struct twlreg_info      *info = rdev_get_drvdata(rdev);
211         int                     grp = 0;
212         int                     ret;
213 
214         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
215                 grp = twlreg_grp(rdev);
216         if (grp < 0)
217                 return grp;
218 
219         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
220                         grp << TWL6030_CFG_STATE_GRP_SHIFT |
221                         TWL6030_CFG_STATE_ON);
222         return ret;
223 }
224 
225 static int twl4030reg_disable(struct regulator_dev *rdev)
226 {
227         struct twlreg_info      *info = rdev_get_drvdata(rdev);
228         int                     grp;
229         int                     ret;
230 
231         grp = twlreg_grp(rdev);
232         if (grp < 0)
233                 return grp;
234 
235         grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
236 
237         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
238 
239         return ret;
240 }
241 
242 static int twl6030reg_disable(struct regulator_dev *rdev)
243 {
244         struct twlreg_info      *info = rdev_get_drvdata(rdev);
245         int                     grp = 0;
246         int                     ret;
247 
248         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
249                 grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
250 
251         /* For 6030, set the off state for all grps enabled */
252         ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
253                         (grp) << TWL6030_CFG_STATE_GRP_SHIFT |
254                         TWL6030_CFG_STATE_OFF);
255 
256         return ret;
257 }
258 
259 static int twl4030reg_get_status(struct regulator_dev *rdev)
260 {
261         int     state = twlreg_grp(rdev);
262 
263         if (state < 0)
264                 return state;
265         state &= 0x0f;
266 
267         /* assume state != WARM_RESET; we'd not be running...  */
268         if (!state)
269                 return REGULATOR_STATUS_OFF;
270         return (state & BIT(3))
271                 ? REGULATOR_STATUS_NORMAL
272                 : REGULATOR_STATUS_STANDBY;
273 }
274 
275 static int twl6030reg_get_status(struct regulator_dev *rdev)
276 {
277         struct twlreg_info      *info = rdev_get_drvdata(rdev);
278         int                     val;
279 
280         val = twlreg_grp(rdev);
281         if (val < 0)
282                 return val;
283 
284         val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
285 
286         switch (TWL6030_CFG_STATE_APP(val)) {
287         case TWL6030_CFG_STATE_ON:
288                 return REGULATOR_STATUS_NORMAL;
289 
290         case TWL6030_CFG_STATE_SLEEP:
291                 return REGULATOR_STATUS_STANDBY;
292 
293         case TWL6030_CFG_STATE_OFF:
294         case TWL6030_CFG_STATE_OFF2:
295         default:
296                 break;
297         }
298 
299         return REGULATOR_STATUS_OFF;
300 }
301 
302 static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
303 {
304         struct twlreg_info      *info = rdev_get_drvdata(rdev);
305         unsigned                message;
306         int                     status;
307 
308         /* We can only set the mode through state machine commands... */
309         switch (mode) {
310         case REGULATOR_MODE_NORMAL:
311                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
312                 break;
313         case REGULATOR_MODE_STANDBY:
314                 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
315                 break;
316         default:
317                 return -EINVAL;
318         }
319 
320         /* Ensure the resource is associated with some group */
321         status = twlreg_grp(rdev);
322         if (status < 0)
323                 return status;
324         if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
325                 return -EACCES;
326 
327         status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
328                         message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
329         if (status < 0)
330                 return status;
331 
332         return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
333                         message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
334 }
335 
336 static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
337 {
338         struct twlreg_info      *info = rdev_get_drvdata(rdev);
339         int grp = 0;
340         int val;
341 
342         if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
343                 grp = twlreg_grp(rdev);
344 
345         if (grp < 0)
346                 return grp;
347 
348         /* Compose the state register settings */
349         val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
350         /* We can only set the mode through state machine commands... */
351         switch (mode) {
352         case REGULATOR_MODE_NORMAL:
353                 val |= TWL6030_CFG_STATE_ON;
354                 break;
355         case REGULATOR_MODE_STANDBY:
356                 val |= TWL6030_CFG_STATE_SLEEP;
357                 break;
358 
359         default:
360                 return -EINVAL;
361         }
362 
363         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
364 }
365 
366 /*----------------------------------------------------------------------*/
367 
368 /*
369  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
370  * select field in its control register.   We use tables indexed by VSEL
371  * to record voltages in milliVolts.  (Accuracy is about three percent.)
372  *
373  * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
374  * currently handled by listing two slightly different VAUX2 regulators,
375  * only one of which will be configured.
376  *
377  * VSEL values documented as "TI cannot support these values" are flagged
378  * in these tables as UNSUP() values; we normally won't assign them.
379  *
380  * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
381  * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
382  */
383 #define UNSUP_MASK      0x8000
384 
385 #define UNSUP(x)        (UNSUP_MASK | (x))
386 #define IS_UNSUP(info, x)                       \
387         ((UNSUP_MASK & (x)) &&                  \
388          !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
389 #define LDO_MV(x)       (~UNSUP_MASK & (x))
390 
391 
392 static const u16 VAUX1_VSEL_table[] = {
393         UNSUP(1500), UNSUP(1800), 2500, 2800,
394         3000, 3000, 3000, 3000,
395 };
396 static const u16 VAUX2_4030_VSEL_table[] = {
397         UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
398         1500, 1800, UNSUP(1850), 2500,
399         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
400         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
401 };
402 static const u16 VAUX2_VSEL_table[] = {
403         1700, 1700, 1900, 1300,
404         1500, 1800, 2000, 2500,
405         2100, 2800, 2200, 2300,
406         2400, 2400, 2400, 2400,
407 };
408 static const u16 VAUX3_VSEL_table[] = {
409         1500, 1800, 2500, 2800,
410         3000, 3000, 3000, 3000,
411 };
412 static const u16 VAUX4_VSEL_table[] = {
413         700, 1000, 1200, UNSUP(1300),
414         1500, 1800, UNSUP(1850), 2500,
415         UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
416         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
417 };
418 static const u16 VMMC1_VSEL_table[] = {
419         1850, 2850, 3000, 3150,
420 };
421 static const u16 VMMC2_VSEL_table[] = {
422         UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
423         UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
424         2600, 2800, 2850, 3000,
425         3150, 3150, 3150, 3150,
426 };
427 static const u16 VPLL1_VSEL_table[] = {
428         1000, 1200, 1300, 1800,
429         UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
430 };
431 static const u16 VPLL2_VSEL_table[] = {
432         700, 1000, 1200, 1300,
433         UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
434         UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
435         UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
436 };
437 static const u16 VSIM_VSEL_table[] = {
438         UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
439         2800, 3000, 3000, 3000,
440 };
441 static const u16 VDAC_VSEL_table[] = {
442         1200, 1300, 1800, 1800,
443 };
444 static const u16 VIO_VSEL_table[] = {
445         1800, 1850,
446 };
447 static const u16 VINTANA2_VSEL_table[] = {
448         2500, 2750,
449 };
450 
451 static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
452 {
453         struct twlreg_info      *info = rdev_get_drvdata(rdev);
454         int                     mV = info->table[index];
455 
456         return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
457 }
458 
459 static int
460 twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
461 {
462         struct twlreg_info      *info = rdev_get_drvdata(rdev);
463 
464         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
465                             selector);
466 }
467 
468 static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev)
469 {
470         struct twlreg_info      *info = rdev_get_drvdata(rdev);
471         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
472 
473         if (vsel < 0)
474                 return vsel;
475 
476         vsel &= info->table_len - 1;
477         return vsel;
478 }
479 
480 static struct regulator_ops twl4030ldo_ops = {
481         .list_voltage   = twl4030ldo_list_voltage,
482 
483         .set_voltage_sel = twl4030ldo_set_voltage_sel,
484         .get_voltage_sel = twl4030ldo_get_voltage_sel,
485 
486         .enable         = twl4030reg_enable,
487         .disable        = twl4030reg_disable,
488         .is_enabled     = twl4030reg_is_enabled,
489 
490         .set_mode       = twl4030reg_set_mode,
491 
492         .get_status     = twl4030reg_get_status,
493 };
494 
495 static int
496 twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
497                         unsigned *selector)
498 {
499         struct twlreg_info *info = rdev_get_drvdata(rdev);
500         int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
501 
502         if (info->set_voltage) {
503                 return info->set_voltage(info->data, min_uV);
504         } else {
505                 twlreg_write(info, TWL_MODULE_PM_RECEIVER,
506                         VREG_VOLTAGE_SMPS_4030, vsel);
507         }
508 
509         return 0;
510 }
511 
512 static int twl4030smps_get_voltage(struct regulator_dev *rdev)
513 {
514         struct twlreg_info *info = rdev_get_drvdata(rdev);
515         int vsel;
516 
517         if (info->get_voltage)
518                 return info->get_voltage(info->data);
519 
520         vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
521                 VREG_VOLTAGE_SMPS_4030);
522 
523         return vsel * 12500 + 600000;
524 }
525 
526 static struct regulator_ops twl4030smps_ops = {
527         .set_voltage    = twl4030smps_set_voltage,
528         .get_voltage    = twl4030smps_get_voltage,
529 };
530 
531 static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
532         int max_uV, unsigned *selector)
533 {
534         struct twlreg_info *info = rdev_get_drvdata(rdev);
535 
536         if (info->set_voltage)
537                 return info->set_voltage(info->data, min_uV);
538 
539         return -ENODEV;
540 }
541 
542 static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
543 {
544         struct twlreg_info *info = rdev_get_drvdata(rdev);
545 
546         if (info->get_voltage)
547                 return info->get_voltage(info->data);
548 
549         return -ENODEV;
550 }
551 
552 static struct regulator_ops twl6030coresmps_ops = {
553         .set_voltage    = twl6030coresmps_set_voltage,
554         .get_voltage    = twl6030coresmps_get_voltage,
555 };
556 
557 static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
558 {
559         struct twlreg_info *info = rdev_get_drvdata(rdev);
560 
561         switch (sel) {
562         case 0:
563                 return 0;
564         case 1 ... 24:
565                 /* Linear mapping from 00000001 to 00011000:
566                  * Absolute voltage value = 1.0 V + 0.1 V × (sel – 00000001)
567                  */
568                 return (info->min_mV + 100 * (sel - 1)) * 1000;
569         case 25 ... 30:
570                 return -EINVAL;
571         case 31:
572                 return 2750000;
573         default:
574                 return -EINVAL;
575         }
576 }
577 
578 static int
579 twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
580 {
581         struct twlreg_info      *info = rdev_get_drvdata(rdev);
582 
583         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
584                             selector);
585 }
586 
587 static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
588 {
589         struct twlreg_info      *info = rdev_get_drvdata(rdev);
590         int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
591 
592         return vsel;
593 }
594 
595 static struct regulator_ops twl6030ldo_ops = {
596         .list_voltage   = twl6030ldo_list_voltage,
597 
598         .set_voltage_sel = twl6030ldo_set_voltage_sel,
599         .get_voltage_sel = twl6030ldo_get_voltage_sel,
600 
601         .enable         = twl6030reg_enable,
602         .disable        = twl6030reg_disable,
603         .is_enabled     = twl6030reg_is_enabled,
604 
605         .set_mode       = twl6030reg_set_mode,
606 
607         .get_status     = twl6030reg_get_status,
608 };
609 
610 /*----------------------------------------------------------------------*/
611 
612 static struct regulator_ops twl4030fixed_ops = {
613         .list_voltage   = regulator_list_voltage_linear,
614 
615         .enable         = twl4030reg_enable,
616         .disable        = twl4030reg_disable,
617         .is_enabled     = twl4030reg_is_enabled,
618 
619         .set_mode       = twl4030reg_set_mode,
620 
621         .get_status     = twl4030reg_get_status,
622 };
623 
624 static struct regulator_ops twl6030fixed_ops = {
625         .list_voltage   = regulator_list_voltage_linear,
626 
627         .enable         = twl6030reg_enable,
628         .disable        = twl6030reg_disable,
629         .is_enabled     = twl6030reg_is_enabled,
630 
631         .set_mode       = twl6030reg_set_mode,
632 
633         .get_status     = twl6030reg_get_status,
634 };
635 
636 /*
637  * SMPS status and control
638  */
639 
640 static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
641 {
642         struct twlreg_info      *info = rdev_get_drvdata(rdev);
643 
644         int voltage = 0;
645 
646         switch (info->flags) {
647         case SMPS_OFFSET_EN:
648                 voltage = 100000;
649                 /* fall through */
650         case 0:
651                 switch (index) {
652                 case 0:
653                         voltage = 0;
654                         break;
655                 case 58:
656                         voltage = 1350 * 1000;
657                         break;
658                 case 59:
659                         voltage = 1500 * 1000;
660                         break;
661                 case 60:
662                         voltage = 1800 * 1000;
663                         break;
664                 case 61:
665                         voltage = 1900 * 1000;
666                         break;
667                 case 62:
668                         voltage = 2100 * 1000;
669                         break;
670                 default:
671                         voltage += (600000 + (12500 * (index - 1)));
672                 }
673                 break;
674         case SMPS_EXTENDED_EN:
675                 switch (index) {
676                 case 0:
677                         voltage = 0;
678                         break;
679                 case 58:
680                         voltage = 2084 * 1000;
681                         break;
682                 case 59:
683                         voltage = 2315 * 1000;
684                         break;
685                 case 60:
686                         voltage = 2778 * 1000;
687                         break;
688                 case 61:
689                         voltage = 2932 * 1000;
690                         break;
691                 case 62:
692                         voltage = 3241 * 1000;
693                         break;
694                 default:
695                         voltage = (1852000 + (38600 * (index - 1)));
696                 }
697                 break;
698         case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
699                 switch (index) {
700                 case 0:
701                         voltage = 0;
702                         break;
703                 case 58:
704                         voltage = 4167 * 1000;
705                         break;
706                 case 59:
707                         voltage = 2315 * 1000;
708                         break;
709                 case 60:
710                         voltage = 2778 * 1000;
711                         break;
712                 case 61:
713                         voltage = 2932 * 1000;
714                         break;
715                 case 62:
716                         voltage = 3241 * 1000;
717                         break;
718                 default:
719                         voltage = (2161000 + (38600 * (index - 1)));
720                 }
721                 break;
722         }
723 
724         return voltage;
725 }
726 
727 static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
728                                    int max_uV)
729 {
730         struct twlreg_info *info = rdev_get_drvdata(rdev);
731         int vsel = 0;
732 
733         switch (info->flags) {
734         case 0:
735                 if (min_uV == 0)
736                         vsel = 0;
737                 else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
738                         vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
739                         vsel++;
740                 }
741                 /* Values 1..57 for vsel are linear and can be calculated
742                  * values 58..62 are non linear.
743                  */
744                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
745                         vsel = 62;
746                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
747                         vsel = 61;
748                 else if ((min_uV > 1500000) && (min_uV <= 1800000))
749                         vsel = 60;
750                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
751                         vsel = 59;
752                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
753                         vsel = 58;
754                 else
755                         return -EINVAL;
756                 break;
757         case SMPS_OFFSET_EN:
758                 if (min_uV == 0)
759                         vsel = 0;
760                 else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
761                         vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
762                         vsel++;
763                 }
764                 /* Values 1..57 for vsel are linear and can be calculated
765                  * values 58..62 are non linear.
766                  */
767                 else if ((min_uV > 1900000) && (min_uV <= 2100000))
768                         vsel = 62;
769                 else if ((min_uV > 1800000) && (min_uV <= 1900000))
770                         vsel = 61;
771                 else if ((min_uV > 1350000) && (min_uV <= 1800000))
772                         vsel = 60;
773                 else if ((min_uV > 1350000) && (min_uV <= 1500000))
774                         vsel = 59;
775                 else if ((min_uV > 1300000) && (min_uV <= 1350000))
776                         vsel = 58;
777                 else
778                         return -EINVAL;
779                 break;
780         case SMPS_EXTENDED_EN:
781                 if (min_uV == 0) {
782                         vsel = 0;
783                 } else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
784                         vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
785                         vsel++;
786                 }
787                 break;
788         case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
789                 if (min_uV == 0) {
790                         vsel = 0;
791                 } else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
792                         vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
793                         vsel++;
794                 }
795                 break;
796         }
797 
798         return vsel;
799 }
800 
801 static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
802                                        unsigned int selector)
803 {
804         struct twlreg_info *info = rdev_get_drvdata(rdev);
805 
806         return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
807                             selector);
808 }
809 
810 static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
811 {
812         struct twlreg_info      *info = rdev_get_drvdata(rdev);
813 
814         return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
815 }
816 
817 static struct regulator_ops twlsmps_ops = {
818         .list_voltage           = twl6030smps_list_voltage,
819         .map_voltage            = twl6030smps_map_voltage,
820 
821         .set_voltage_sel        = twl6030smps_set_voltage_sel,
822         .get_voltage_sel        = twl6030smps_get_voltage_sel,
823 
824         .enable                 = twl6030reg_enable,
825         .disable                = twl6030reg_disable,
826         .is_enabled             = twl6030reg_is_enabled,
827 
828         .set_mode               = twl6030reg_set_mode,
829 
830         .get_status             = twl6030reg_get_status,
831 };
832 
833 /*----------------------------------------------------------------------*/
834 
835 #define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
836                         remap_conf) \
837                 TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
838                         remap_conf, TWL4030, twl4030fixed_ops)
839 #define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
840                 TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
841                         0x0, TWL6030, twl6030fixed_ops)
842 
843 #define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
844 static const struct twlreg_info TWL4030_INFO_##label = { \
845         .base = offset, \
846         .id = num, \
847         .table_len = ARRAY_SIZE(label##_VSEL_table), \
848         .table = label##_VSEL_table, \
849         .remap = remap_conf, \
850         .desc = { \
851                 .name = #label, \
852                 .id = TWL4030_REG_##label, \
853                 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
854                 .ops = &twl4030ldo_ops, \
855                 .type = REGULATOR_VOLTAGE, \
856                 .owner = THIS_MODULE, \
857                 .enable_time = turnon_delay, \
858                 }, \
859         }
860 
861 #define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
862 static const struct twlreg_info TWL4030_INFO_##label = { \
863         .base = offset, \
864         .id = num, \
865         .remap = remap_conf, \
866         .desc = { \
867                 .name = #label, \
868                 .id = TWL4030_REG_##label, \
869                 .ops = &twl4030smps_ops, \
870                 .type = REGULATOR_VOLTAGE, \
871                 .owner = THIS_MODULE, \
872                 .enable_time = turnon_delay, \
873                 }, \
874         }
875 
876 #define TWL6030_ADJUSTABLE_SMPS(label) \
877 static const struct twlreg_info TWL6030_INFO_##label = { \
878         .desc = { \
879                 .name = #label, \
880                 .id = TWL6030_REG_##label, \
881                 .ops = &twl6030coresmps_ops, \
882                 .type = REGULATOR_VOLTAGE, \
883                 .owner = THIS_MODULE, \
884                 }, \
885         }
886 
887 #define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
888 static const struct twlreg_info TWL6030_INFO_##label = { \
889         .base = offset, \
890         .min_mV = min_mVolts, \
891         .max_mV = max_mVolts, \
892         .desc = { \
893                 .name = #label, \
894                 .id = TWL6030_REG_##label, \
895                 .n_voltages = 32, \
896                 .ops = &twl6030ldo_ops, \
897                 .type = REGULATOR_VOLTAGE, \
898                 .owner = THIS_MODULE, \
899                 }, \
900         }
901 
902 #define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
903 static const struct twlreg_info TWL6032_INFO_##label = { \
904         .base = offset, \
905         .min_mV = min_mVolts, \
906         .max_mV = max_mVolts, \
907         .desc = { \
908                 .name = #label, \
909                 .id = TWL6032_REG_##label, \
910                 .n_voltages = 32, \
911                 .ops = &twl6030ldo_ops, \
912                 .type = REGULATOR_VOLTAGE, \
913                 .owner = THIS_MODULE, \
914                 }, \
915         }
916 
917 #define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
918                 family, operations) \
919 static const struct twlreg_info TWLFIXED_INFO_##label = { \
920         .base = offset, \
921         .id = num, \
922         .min_mV = mVolts, \
923         .remap = remap_conf, \
924         .desc = { \
925                 .name = #label, \
926                 .id = family##_REG_##label, \
927                 .n_voltages = 1, \
928                 .ops = &operations, \
929                 .type = REGULATOR_VOLTAGE, \
930                 .owner = THIS_MODULE, \
931                 .min_uV = mVolts * 1000, \
932                 .enable_time = turnon_delay, \
933                 }, \
934         }
935 
936 #define TWL6032_ADJUSTABLE_SMPS(label, offset) \
937 static const struct twlreg_info TWLSMPS_INFO_##label = { \
938         .base = offset, \
939         .min_mV = 600, \
940         .max_mV = 2100, \
941         .desc = { \
942                 .name = #label, \
943                 .id = TWL6032_REG_##label, \
944                 .n_voltages = 63, \
945                 .ops = &twlsmps_ops, \
946                 .type = REGULATOR_VOLTAGE, \
947                 .owner = THIS_MODULE, \
948                 }, \
949         }
950 
951 /*
952  * We list regulators here if systems need some level of
953  * software control over them after boot.
954  */
955 TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
956 TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
957 TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
958 TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
959 TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
960 TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
961 TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
962 TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
963 TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
964 TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
965 TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
966 TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
967 TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
968 TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
969 TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
970 /* VUSBCP is managed *only* by the USB subchip */
971 /* 6030 REG with base as PMC Slave Misc : 0x0030 */
972 /* Turnon-delay and remap configuration values for 6030 are not
973    verified since the specification is not public */
974 TWL6030_ADJUSTABLE_SMPS(VDD1);
975 TWL6030_ADJUSTABLE_SMPS(VDD2);
976 TWL6030_ADJUSTABLE_SMPS(VDD3);
977 TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
978 TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
979 TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
980 TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
981 TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
982 TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
983 /* 6025 are renamed compared to 6030 versions */
984 TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
985 TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
986 TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
987 TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
988 TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
989 TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
990 TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
991 TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
992 TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
993 TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
994 TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
995 TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
996 TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
997 TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
998 TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
999 TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
1000 TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
1001 TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
1002 TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
1003 TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
1004 TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
1005 TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
1006 TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
1007 
1008 static u8 twl_get_smps_offset(void)
1009 {
1010         u8 value;
1011 
1012         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1013                         TWL6030_SMPS_OFFSET);
1014         return value;
1015 }
1016 
1017 static u8 twl_get_smps_mult(void)
1018 {
1019         u8 value;
1020 
1021         twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
1022                         TWL6030_SMPS_MULT);
1023         return value;
1024 }
1025 
1026 #define TWL_OF_MATCH(comp, family, label) \
1027         { \
1028                 .compatible = comp, \
1029                 .data = &family##_INFO_##label, \
1030         }
1031 
1032 #define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
1033 #define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
1034 #define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
1035 #define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
1036 #define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
1037 
1038 static const struct of_device_id twl_of_match[] = {
1039         TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
1040         TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
1041         TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
1042         TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
1043         TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
1044         TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
1045         TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
1046         TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
1047         TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
1048         TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
1049         TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
1050         TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
1051         TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
1052         TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
1053         TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
1054         TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
1055         TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
1056         TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
1057         TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
1058         TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
1059         TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
1060         TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
1061         TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
1062         TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
1063         TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
1064         TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
1065         TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
1066         TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
1067         TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
1068         TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
1069         TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
1070         TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
1071         TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
1072         TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
1073         TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
1074         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
1075         TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
1076         TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
1077         TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
1078         TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
1079         TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
1080         TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
1081         TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
1082         TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
1083         TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
1084         TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
1085         TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
1086         {},
1087 };
1088 MODULE_DEVICE_TABLE(of, twl_of_match);
1089 
1090 static int twlreg_probe(struct platform_device *pdev)
1091 {
1092         int                             i, id;
1093         struct twlreg_info              *info;
1094         const struct twlreg_info        *template;
1095         struct regulator_init_data      *initdata;
1096         struct regulation_constraints   *c;
1097         struct regulator_dev            *rdev;
1098         struct twl_regulator_driver_data        *drvdata;
1099         const struct of_device_id       *match;
1100         struct regulator_config         config = { };
1101 
1102         match = of_match_device(twl_of_match, &pdev->dev);
1103         if (match) {
1104                 template = match->data;
1105                 id = template->desc.id;
1106                 initdata = of_get_regulator_init_data(&pdev->dev,
1107                                                       pdev->dev.of_node);
1108                 drvdata = NULL;
1109         } else {
1110                 id = pdev->id;
1111                 initdata = dev_get_platdata(&pdev->dev);
1112                 for (i = 0, template = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
1113                         template = twl_of_match[i].data;
1114                         if (template && template->desc.id == id)
1115                                 break;
1116                 }
1117                 if (i == ARRAY_SIZE(twl_of_match))
1118                         return -ENODEV;
1119 
1120                 drvdata = initdata->driver_data;
1121                 if (!drvdata)
1122                         return -EINVAL;
1123         }
1124 
1125         if (!template)
1126                 return -ENODEV;
1127 
1128         if (!initdata)
1129                 return -EINVAL;
1130 
1131         info = kmemdup(template, sizeof(*info), GFP_KERNEL);
1132         if (!info)
1133                 return -ENOMEM;
1134 
1135         if (drvdata) {
1136                 /* copy the driver data into regulator data */
1137                 info->features = drvdata->features;
1138                 info->data = drvdata->data;
1139                 info->set_voltage = drvdata->set_voltage;
1140                 info->get_voltage = drvdata->get_voltage;
1141         }
1142 
1143         /* Constrain board-specific capabilities according to what
1144          * this driver and the chip itself can actually do.
1145          */
1146         c = &initdata->constraints;
1147         c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
1148         c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
1149                                 | REGULATOR_CHANGE_MODE
1150                                 | REGULATOR_CHANGE_STATUS;
1151         switch (id) {
1152         case TWL4030_REG_VIO:
1153         case TWL4030_REG_VDD1:
1154         case TWL4030_REG_VDD2:
1155         case TWL4030_REG_VPLL1:
1156         case TWL4030_REG_VINTANA1:
1157         case TWL4030_REG_VINTANA2:
1158         case TWL4030_REG_VINTDIG:
1159                 c->always_on = true;
1160                 break;
1161         default:
1162                 break;
1163         }
1164 
1165         switch (id) {
1166         case TWL6032_REG_SMPS3:
1167                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
1168                         info->flags |= SMPS_EXTENDED_EN;
1169                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
1170                         info->flags |= SMPS_OFFSET_EN;
1171                 break;
1172         case TWL6032_REG_SMPS4:
1173                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
1174                         info->flags |= SMPS_EXTENDED_EN;
1175                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
1176                         info->flags |= SMPS_OFFSET_EN;
1177                 break;
1178         case TWL6032_REG_VIO:
1179                 if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
1180                         info->flags |= SMPS_EXTENDED_EN;
1181                 if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
1182                         info->flags |= SMPS_OFFSET_EN;
1183                 break;
1184         }
1185 
1186         config.dev = &pdev->dev;
1187         config.init_data = initdata;
1188         config.driver_data = info;
1189         config.of_node = pdev->dev.of_node;
1190 
1191         rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
1192         if (IS_ERR(rdev)) {
1193                 dev_err(&pdev->dev, "can't register %s, %ld\n",
1194                                 info->desc.name, PTR_ERR(rdev));
1195                 kfree(info);
1196                 return PTR_ERR(rdev);
1197         }
1198         platform_set_drvdata(pdev, rdev);
1199 
1200         if (twl_class_is_4030())
1201                 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
1202                                                 info->remap);
1203 
1204         /* NOTE:  many regulators support short-circuit IRQs (presentable
1205          * as REGULATOR_OVER_CURRENT notifications?) configured via:
1206          *  - SC_CONFIG
1207          *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
1208          *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
1209          *  - IT_CONFIG
1210          */
1211 
1212         return 0;
1213 }
1214 
1215 static int twlreg_remove(struct platform_device *pdev)
1216 {
1217         struct regulator_dev *rdev = platform_get_drvdata(pdev);
1218         struct twlreg_info *info = rdev->reg_data;
1219 
1220         kfree(info);
1221         return 0;
1222 }
1223 
1224 MODULE_ALIAS("platform:twl_reg");
1225 
1226 static struct platform_driver twlreg_driver = {
1227         .probe          = twlreg_probe,
1228         .remove         = twlreg_remove,
1229         /* NOTE: short name, to work around driver model truncation of
1230          * "twl_regulator.12" (and friends) to "twl_regulator.1".
1231          */
1232         .driver  = {
1233                 .name  = "twl_reg",
1234                 .owner = THIS_MODULE,
1235                 .of_match_table = of_match_ptr(twl_of_match),
1236         },
1237 };
1238 
1239 static int __init twlreg_init(void)
1240 {
1241         return platform_driver_register(&twlreg_driver);
1242 }
1243 subsys_initcall(twlreg_init);
1244 
1245 static void __exit twlreg_exit(void)
1246 {
1247         platform_driver_unregister(&twlreg_driver);
1248 }
1249 module_exit(twlreg_exit)
1250 
1251 MODULE_DESCRIPTION("TWL regulator driver");
1252 MODULE_LICENSE("GPL");
1253 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us