Version:  2.0.40 2.2.26 2.4.37 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1

Linux/drivers/regulator/tps65910-regulator.c

  1 /*
  2  * tps65910.c  --  TI tps65910
  3  *
  4  * Copyright 2010 Texas Instruments Inc.
  5  *
  6  * Author: Graeme Gregory <gg@slimlogic.co.uk>
  7  * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
  8  *
  9  *  This program is free software; you can redistribute it and/or modify it
 10  *  under  the terms of the GNU General  Public License as published by the
 11  *  Free Software Foundation;  either version 2 of the License, or (at your
 12  *  option) any later version.
 13  *
 14  */
 15 
 16 #include <linux/kernel.h>
 17 #include <linux/module.h>
 18 #include <linux/init.h>
 19 #include <linux/err.h>
 20 #include <linux/of.h>
 21 #include <linux/platform_device.h>
 22 #include <linux/regulator/driver.h>
 23 #include <linux/regulator/machine.h>
 24 #include <linux/slab.h>
 25 #include <linux/gpio.h>
 26 #include <linux/mfd/tps65910.h>
 27 #include <linux/regulator/of_regulator.h>
 28 
 29 #define TPS65910_SUPPLY_STATE_ENABLED   0x1
 30 #define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 |       \
 31                         TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 |          \
 32                         TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 |          \
 33                         TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
 34 
 35 /* supported VIO voltages in microvolts */
 36 static const unsigned int VIO_VSEL_table[] = {
 37         1500000, 1800000, 2500000, 3300000,
 38 };
 39 
 40 /* VSEL tables for TPS65910 specific LDOs and dcdc's */
 41 
 42 /* supported VRTC voltages in microvolts */
 43 static const unsigned int VRTC_VSEL_table[] = {
 44         1800000,
 45 };
 46 
 47 /* supported VDD3 voltages in microvolts */
 48 static const unsigned int VDD3_VSEL_table[] = {
 49         5000000,
 50 };
 51 
 52 /* supported VDIG1 voltages in microvolts */
 53 static const unsigned int VDIG1_VSEL_table[] = {
 54         1200000, 1500000, 1800000, 2700000,
 55 };
 56 
 57 /* supported VDIG2 voltages in microvolts */
 58 static const unsigned int VDIG2_VSEL_table[] = {
 59         1000000, 1100000, 1200000, 1800000,
 60 };
 61 
 62 /* supported VPLL voltages in microvolts */
 63 static const unsigned int VPLL_VSEL_table[] = {
 64         1000000, 1100000, 1800000, 2500000,
 65 };
 66 
 67 /* supported VDAC voltages in microvolts */
 68 static const unsigned int VDAC_VSEL_table[] = {
 69         1800000, 2600000, 2800000, 2850000,
 70 };
 71 
 72 /* supported VAUX1 voltages in microvolts */
 73 static const unsigned int VAUX1_VSEL_table[] = {
 74         1800000, 2500000, 2800000, 2850000,
 75 };
 76 
 77 /* supported VAUX2 voltages in microvolts */
 78 static const unsigned int VAUX2_VSEL_table[] = {
 79         1800000, 2800000, 2900000, 3300000,
 80 };
 81 
 82 /* supported VAUX33 voltages in microvolts */
 83 static const unsigned int VAUX33_VSEL_table[] = {
 84         1800000, 2000000, 2800000, 3300000,
 85 };
 86 
 87 /* supported VMMC voltages in microvolts */
 88 static const unsigned int VMMC_VSEL_table[] = {
 89         1800000, 2800000, 3000000, 3300000,
 90 };
 91 
 92 /* supported BBCH voltages in microvolts */
 93 static const unsigned int VBB_VSEL_table[] = {
 94         3000000, 2520000, 3150000, 5000000,
 95 };
 96 
 97 struct tps_info {
 98         const char *name;
 99         const char *vin_name;
100         u8 n_voltages;
101         const unsigned int *voltage_table;
102         int enable_time_us;
103 };
104 
105 static struct tps_info tps65910_regs[] = {
106         {
107                 .name = "vrtc",
108                 .vin_name = "vcc7",
109                 .n_voltages = ARRAY_SIZE(VRTC_VSEL_table),
110                 .voltage_table = VRTC_VSEL_table,
111                 .enable_time_us = 2200,
112         },
113         {
114                 .name = "vio",
115                 .vin_name = "vccio",
116                 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
117                 .voltage_table = VIO_VSEL_table,
118                 .enable_time_us = 350,
119         },
120         {
121                 .name = "vdd1",
122                 .vin_name = "vcc1",
123                 .enable_time_us = 350,
124         },
125         {
126                 .name = "vdd2",
127                 .vin_name = "vcc2",
128                 .enable_time_us = 350,
129         },
130         {
131                 .name = "vdd3",
132                 .n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
133                 .voltage_table = VDD3_VSEL_table,
134                 .enable_time_us = 200,
135         },
136         {
137                 .name = "vdig1",
138                 .vin_name = "vcc6",
139                 .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
140                 .voltage_table = VDIG1_VSEL_table,
141                 .enable_time_us = 100,
142         },
143         {
144                 .name = "vdig2",
145                 .vin_name = "vcc6",
146                 .n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
147                 .voltage_table = VDIG2_VSEL_table,
148                 .enable_time_us = 100,
149         },
150         {
151                 .name = "vpll",
152                 .vin_name = "vcc5",
153                 .n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
154                 .voltage_table = VPLL_VSEL_table,
155                 .enable_time_us = 100,
156         },
157         {
158                 .name = "vdac",
159                 .vin_name = "vcc5",
160                 .n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
161                 .voltage_table = VDAC_VSEL_table,
162                 .enable_time_us = 100,
163         },
164         {
165                 .name = "vaux1",
166                 .vin_name = "vcc4",
167                 .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
168                 .voltage_table = VAUX1_VSEL_table,
169                 .enable_time_us = 100,
170         },
171         {
172                 .name = "vaux2",
173                 .vin_name = "vcc4",
174                 .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
175                 .voltage_table = VAUX2_VSEL_table,
176                 .enable_time_us = 100,
177         },
178         {
179                 .name = "vaux33",
180                 .vin_name = "vcc3",
181                 .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
182                 .voltage_table = VAUX33_VSEL_table,
183                 .enable_time_us = 100,
184         },
185         {
186                 .name = "vmmc",
187                 .vin_name = "vcc3",
188                 .n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
189                 .voltage_table = VMMC_VSEL_table,
190                 .enable_time_us = 100,
191         },
192         {
193                 .name = "vbb",
194                 .vin_name = "vcc7",
195                 .n_voltages = ARRAY_SIZE(VBB_VSEL_table),
196                 .voltage_table = VBB_VSEL_table,
197         },
198 };
199 
200 static struct tps_info tps65911_regs[] = {
201         {
202                 .name = "vrtc",
203                 .vin_name = "vcc7",
204                 .enable_time_us = 2200,
205         },
206         {
207                 .name = "vio",
208                 .vin_name = "vccio",
209                 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
210                 .voltage_table = VIO_VSEL_table,
211                 .enable_time_us = 350,
212         },
213         {
214                 .name = "vdd1",
215                 .vin_name = "vcc1",
216                 .n_voltages = 0x4C,
217                 .enable_time_us = 350,
218         },
219         {
220                 .name = "vdd2",
221                 .vin_name = "vcc2",
222                 .n_voltages = 0x4C,
223                 .enable_time_us = 350,
224         },
225         {
226                 .name = "vddctrl",
227                 .n_voltages = 0x44,
228                 .enable_time_us = 900,
229         },
230         {
231                 .name = "ldo1",
232                 .vin_name = "vcc6",
233                 .n_voltages = 0x33,
234                 .enable_time_us = 420,
235         },
236         {
237                 .name = "ldo2",
238                 .vin_name = "vcc6",
239                 .n_voltages = 0x33,
240                 .enable_time_us = 420,
241         },
242         {
243                 .name = "ldo3",
244                 .vin_name = "vcc5",
245                 .n_voltages = 0x1A,
246                 .enable_time_us = 230,
247         },
248         {
249                 .name = "ldo4",
250                 .vin_name = "vcc5",
251                 .n_voltages = 0x33,
252                 .enable_time_us = 230,
253         },
254         {
255                 .name = "ldo5",
256                 .vin_name = "vcc4",
257                 .n_voltages = 0x1A,
258                 .enable_time_us = 230,
259         },
260         {
261                 .name = "ldo6",
262                 .vin_name = "vcc3",
263                 .n_voltages = 0x1A,
264                 .enable_time_us = 230,
265         },
266         {
267                 .name = "ldo7",
268                 .vin_name = "vcc3",
269                 .n_voltages = 0x1A,
270                 .enable_time_us = 230,
271         },
272         {
273                 .name = "ldo8",
274                 .vin_name = "vcc3",
275                 .n_voltages = 0x1A,
276                 .enable_time_us = 230,
277         },
278 };
279 
280 #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
281 static unsigned int tps65910_ext_sleep_control[] = {
282         0,
283         EXT_CONTROL_REG_BITS(VIO,    1, 0),
284         EXT_CONTROL_REG_BITS(VDD1,   1, 1),
285         EXT_CONTROL_REG_BITS(VDD2,   1, 2),
286         EXT_CONTROL_REG_BITS(VDD3,   1, 3),
287         EXT_CONTROL_REG_BITS(VDIG1,  0, 1),
288         EXT_CONTROL_REG_BITS(VDIG2,  0, 2),
289         EXT_CONTROL_REG_BITS(VPLL,   0, 6),
290         EXT_CONTROL_REG_BITS(VDAC,   0, 7),
291         EXT_CONTROL_REG_BITS(VAUX1,  0, 3),
292         EXT_CONTROL_REG_BITS(VAUX2,  0, 4),
293         EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
294         EXT_CONTROL_REG_BITS(VMMC,   0, 0),
295 };
296 
297 static unsigned int tps65911_ext_sleep_control[] = {
298         0,
299         EXT_CONTROL_REG_BITS(VIO,     1, 0),
300         EXT_CONTROL_REG_BITS(VDD1,    1, 1),
301         EXT_CONTROL_REG_BITS(VDD2,    1, 2),
302         EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
303         EXT_CONTROL_REG_BITS(LDO1,    0, 1),
304         EXT_CONTROL_REG_BITS(LDO2,    0, 2),
305         EXT_CONTROL_REG_BITS(LDO3,    0, 7),
306         EXT_CONTROL_REG_BITS(LDO4,    0, 6),
307         EXT_CONTROL_REG_BITS(LDO5,    0, 3),
308         EXT_CONTROL_REG_BITS(LDO6,    0, 0),
309         EXT_CONTROL_REG_BITS(LDO7,    0, 5),
310         EXT_CONTROL_REG_BITS(LDO8,    0, 4),
311 };
312 
313 struct tps65910_reg {
314         struct regulator_desc *desc;
315         struct tps65910 *mfd;
316         struct regulator_dev **rdev;
317         struct tps_info **info;
318         int num_regulators;
319         int mode;
320         int  (*get_ctrl_reg)(int);
321         unsigned int *ext_sleep_control;
322         unsigned int board_ext_control[TPS65910_NUM_REGS];
323 };
324 
325 static int tps65910_get_ctrl_register(int id)
326 {
327         switch (id) {
328         case TPS65910_REG_VRTC:
329                 return TPS65910_VRTC;
330         case TPS65910_REG_VIO:
331                 return TPS65910_VIO;
332         case TPS65910_REG_VDD1:
333                 return TPS65910_VDD1;
334         case TPS65910_REG_VDD2:
335                 return TPS65910_VDD2;
336         case TPS65910_REG_VDD3:
337                 return TPS65910_VDD3;
338         case TPS65910_REG_VDIG1:
339                 return TPS65910_VDIG1;
340         case TPS65910_REG_VDIG2:
341                 return TPS65910_VDIG2;
342         case TPS65910_REG_VPLL:
343                 return TPS65910_VPLL;
344         case TPS65910_REG_VDAC:
345                 return TPS65910_VDAC;
346         case TPS65910_REG_VAUX1:
347                 return TPS65910_VAUX1;
348         case TPS65910_REG_VAUX2:
349                 return TPS65910_VAUX2;
350         case TPS65910_REG_VAUX33:
351                 return TPS65910_VAUX33;
352         case TPS65910_REG_VMMC:
353                 return TPS65910_VMMC;
354         case TPS65910_REG_VBB:
355                 return TPS65910_BBCH;
356         default:
357                 return -EINVAL;
358         }
359 }
360 
361 static int tps65911_get_ctrl_register(int id)
362 {
363         switch (id) {
364         case TPS65910_REG_VRTC:
365                 return TPS65910_VRTC;
366         case TPS65910_REG_VIO:
367                 return TPS65910_VIO;
368         case TPS65910_REG_VDD1:
369                 return TPS65910_VDD1;
370         case TPS65910_REG_VDD2:
371                 return TPS65910_VDD2;
372         case TPS65911_REG_VDDCTRL:
373                 return TPS65911_VDDCTRL;
374         case TPS65911_REG_LDO1:
375                 return TPS65911_LDO1;
376         case TPS65911_REG_LDO2:
377                 return TPS65911_LDO2;
378         case TPS65911_REG_LDO3:
379                 return TPS65911_LDO3;
380         case TPS65911_REG_LDO4:
381                 return TPS65911_LDO4;
382         case TPS65911_REG_LDO5:
383                 return TPS65911_LDO5;
384         case TPS65911_REG_LDO6:
385                 return TPS65911_LDO6;
386         case TPS65911_REG_LDO7:
387                 return TPS65911_LDO7;
388         case TPS65911_REG_LDO8:
389                 return TPS65911_LDO8;
390         default:
391                 return -EINVAL;
392         }
393 }
394 
395 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
396 {
397         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
398         struct tps65910 *mfd = pmic->mfd;
399         int reg, value, id = rdev_get_id(dev);
400 
401         reg = pmic->get_ctrl_reg(id);
402         if (reg < 0)
403                 return reg;
404 
405         switch (mode) {
406         case REGULATOR_MODE_NORMAL:
407                 return tps65910_reg_update_bits(pmic->mfd, reg,
408                                                 LDO_ST_MODE_BIT | LDO_ST_ON_BIT,
409                                                 LDO_ST_ON_BIT);
410         case REGULATOR_MODE_IDLE:
411                 value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
412                 return tps65910_reg_set_bits(mfd, reg, value);
413         case REGULATOR_MODE_STANDBY:
414                 return tps65910_reg_clear_bits(mfd, reg, LDO_ST_ON_BIT);
415         }
416 
417         return -EINVAL;
418 }
419 
420 static unsigned int tps65910_get_mode(struct regulator_dev *dev)
421 {
422         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
423         int ret, reg, value, id = rdev_get_id(dev);
424 
425         reg = pmic->get_ctrl_reg(id);
426         if (reg < 0)
427                 return reg;
428 
429         ret = tps65910_reg_read(pmic->mfd, reg, &value);
430         if (ret < 0)
431                 return ret;
432 
433         if (!(value & LDO_ST_ON_BIT))
434                 return REGULATOR_MODE_STANDBY;
435         else if (value & LDO_ST_MODE_BIT)
436                 return REGULATOR_MODE_IDLE;
437         else
438                 return REGULATOR_MODE_NORMAL;
439 }
440 
441 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
442 {
443         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
444         int ret, id = rdev_get_id(dev);
445         int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
446 
447         switch (id) {
448         case TPS65910_REG_VDD1:
449                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_OP, &opvsel);
450                 if (ret < 0)
451                         return ret;
452                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1, &mult);
453                 if (ret < 0)
454                         return ret;
455                 mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
456                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_SR, &srvsel);
457                 if (ret < 0)
458                         return ret;
459                 sr = opvsel & VDD1_OP_CMD_MASK;
460                 opvsel &= VDD1_OP_SEL_MASK;
461                 srvsel &= VDD1_SR_SEL_MASK;
462                 vselmax = 75;
463                 break;
464         case TPS65910_REG_VDD2:
465                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_OP, &opvsel);
466                 if (ret < 0)
467                         return ret;
468                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2, &mult);
469                 if (ret < 0)
470                         return ret;
471                 mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
472                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_SR, &srvsel);
473                 if (ret < 0)
474                         return ret;
475                 sr = opvsel & VDD2_OP_CMD_MASK;
476                 opvsel &= VDD2_OP_SEL_MASK;
477                 srvsel &= VDD2_SR_SEL_MASK;
478                 vselmax = 75;
479                 break;
480         case TPS65911_REG_VDDCTRL:
481                 ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_OP,
482                                         &opvsel);
483                 if (ret < 0)
484                         return ret;
485                 ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_SR,
486                                         &srvsel);
487                 if (ret < 0)
488                         return ret;
489                 sr = opvsel & VDDCTRL_OP_CMD_MASK;
490                 opvsel &= VDDCTRL_OP_SEL_MASK;
491                 srvsel &= VDDCTRL_SR_SEL_MASK;
492                 vselmax = 64;
493                 break;
494         }
495 
496         /* multiplier 0 == 1 but 2,3 normal */
497         if (!mult)
498                 mult = 1;
499 
500         if (sr) {
501                 /* normalise to valid range */
502                 if (srvsel < 3)
503                         srvsel = 3;
504                 if (srvsel > vselmax)
505                         srvsel = vselmax;
506                 return srvsel - 3;
507         } else {
508 
509                 /* normalise to valid range*/
510                 if (opvsel < 3)
511                         opvsel = 3;
512                 if (opvsel > vselmax)
513                         opvsel = vselmax;
514                 return opvsel - 3;
515         }
516         return -EINVAL;
517 }
518 
519 static int tps65910_get_voltage_sel(struct regulator_dev *dev)
520 {
521         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
522         int ret, reg, value, id = rdev_get_id(dev);
523 
524         reg = pmic->get_ctrl_reg(id);
525         if (reg < 0)
526                 return reg;
527 
528         ret = tps65910_reg_read(pmic->mfd, reg, &value);
529         if (ret < 0)
530                 return ret;
531 
532         switch (id) {
533         case TPS65910_REG_VIO:
534         case TPS65910_REG_VDIG1:
535         case TPS65910_REG_VDIG2:
536         case TPS65910_REG_VPLL:
537         case TPS65910_REG_VDAC:
538         case TPS65910_REG_VAUX1:
539         case TPS65910_REG_VAUX2:
540         case TPS65910_REG_VAUX33:
541         case TPS65910_REG_VMMC:
542                 value &= LDO_SEL_MASK;
543                 value >>= LDO_SEL_SHIFT;
544                 break;
545         case TPS65910_REG_VBB:
546                 value &= BBCH_BBSEL_MASK;
547                 value >>= BBCH_BBSEL_SHIFT;
548                 break;
549         default:
550                 return -EINVAL;
551         }
552 
553         return value;
554 }
555 
556 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
557 {
558         return dev->desc->volt_table[0];
559 }
560 
561 static int tps65911_get_voltage_sel(struct regulator_dev *dev)
562 {
563         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
564         int ret, id = rdev_get_id(dev);
565         unsigned int value, reg;
566 
567         reg = pmic->get_ctrl_reg(id);
568 
569         ret = tps65910_reg_read(pmic->mfd, reg, &value);
570         if (ret < 0)
571                 return ret;
572 
573         switch (id) {
574         case TPS65911_REG_LDO1:
575         case TPS65911_REG_LDO2:
576         case TPS65911_REG_LDO4:
577                 value &= LDO1_SEL_MASK;
578                 value >>= LDO_SEL_SHIFT;
579                 break;
580         case TPS65911_REG_LDO3:
581         case TPS65911_REG_LDO5:
582         case TPS65911_REG_LDO6:
583         case TPS65911_REG_LDO7:
584         case TPS65911_REG_LDO8:
585                 value &= LDO3_SEL_MASK;
586                 value >>= LDO_SEL_SHIFT;
587                 break;
588         case TPS65910_REG_VIO:
589                 value &= LDO_SEL_MASK;
590                 value >>= LDO_SEL_SHIFT;
591                 break;
592         default:
593                 return -EINVAL;
594         }
595 
596         return value;
597 }
598 
599 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
600                                          unsigned selector)
601 {
602         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
603         int id = rdev_get_id(dev), vsel;
604         int dcdc_mult = 0;
605 
606         switch (id) {
607         case TPS65910_REG_VDD1:
608                 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
609                 if (dcdc_mult == 1)
610                         dcdc_mult--;
611                 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
612 
613                 tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD1,
614                                          VDD1_VGAIN_SEL_MASK,
615                                          dcdc_mult << VDD1_VGAIN_SEL_SHIFT);
616                 tps65910_reg_write(pmic->mfd, TPS65910_VDD1_OP, vsel);
617                 break;
618         case TPS65910_REG_VDD2:
619                 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
620                 if (dcdc_mult == 1)
621                         dcdc_mult--;
622                 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
623 
624                 tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD2,
625                                          VDD1_VGAIN_SEL_MASK,
626                                          dcdc_mult << VDD2_VGAIN_SEL_SHIFT);
627                 tps65910_reg_write(pmic->mfd, TPS65910_VDD2_OP, vsel);
628                 break;
629         case TPS65911_REG_VDDCTRL:
630                 vsel = selector + 3;
631                 tps65910_reg_write(pmic->mfd, TPS65911_VDDCTRL_OP, vsel);
632         }
633 
634         return 0;
635 }
636 
637 static int tps65910_set_voltage_sel(struct regulator_dev *dev,
638                                     unsigned selector)
639 {
640         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
641         int reg, id = rdev_get_id(dev);
642 
643         reg = pmic->get_ctrl_reg(id);
644         if (reg < 0)
645                 return reg;
646 
647         switch (id) {
648         case TPS65910_REG_VIO:
649         case TPS65910_REG_VDIG1:
650         case TPS65910_REG_VDIG2:
651         case TPS65910_REG_VPLL:
652         case TPS65910_REG_VDAC:
653         case TPS65910_REG_VAUX1:
654         case TPS65910_REG_VAUX2:
655         case TPS65910_REG_VAUX33:
656         case TPS65910_REG_VMMC:
657                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
658                                                 selector << LDO_SEL_SHIFT);
659         case TPS65910_REG_VBB:
660                 return tps65910_reg_update_bits(pmic->mfd, reg, BBCH_BBSEL_MASK,
661                                                 selector << BBCH_BBSEL_SHIFT);
662         }
663 
664         return -EINVAL;
665 }
666 
667 static int tps65911_set_voltage_sel(struct regulator_dev *dev,
668                                     unsigned selector)
669 {
670         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
671         int reg, id = rdev_get_id(dev);
672 
673         reg = pmic->get_ctrl_reg(id);
674         if (reg < 0)
675                 return reg;
676 
677         switch (id) {
678         case TPS65911_REG_LDO1:
679         case TPS65911_REG_LDO2:
680         case TPS65911_REG_LDO4:
681                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO1_SEL_MASK,
682                                                 selector << LDO_SEL_SHIFT);
683         case TPS65911_REG_LDO3:
684         case TPS65911_REG_LDO5:
685         case TPS65911_REG_LDO6:
686         case TPS65911_REG_LDO7:
687         case TPS65911_REG_LDO8:
688                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO3_SEL_MASK,
689                                                 selector << LDO_SEL_SHIFT);
690         case TPS65910_REG_VIO:
691                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
692                                                 selector << LDO_SEL_SHIFT);
693         case TPS65910_REG_VBB:
694                 return tps65910_reg_update_bits(pmic->mfd, reg, BBCH_BBSEL_MASK,
695                                                 selector << BBCH_BBSEL_SHIFT);
696         }
697 
698         return -EINVAL;
699 }
700 
701 
702 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
703                                         unsigned selector)
704 {
705         int volt, mult = 1, id = rdev_get_id(dev);
706 
707         switch (id) {
708         case TPS65910_REG_VDD1:
709         case TPS65910_REG_VDD2:
710                 mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
711                 volt = VDD1_2_MIN_VOLT +
712                         (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
713                 break;
714         case TPS65911_REG_VDDCTRL:
715                 volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
716                 break;
717         default:
718                 BUG();
719                 return -EINVAL;
720         }
721 
722         return  volt * 100 * mult;
723 }
724 
725 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
726 {
727         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
728         int step_mv = 0, id = rdev_get_id(dev);
729 
730         switch (id) {
731         case TPS65911_REG_LDO1:
732         case TPS65911_REG_LDO2:
733         case TPS65911_REG_LDO4:
734                 /* The first 5 values of the selector correspond to 1V */
735                 if (selector < 5)
736                         selector = 0;
737                 else
738                         selector -= 4;
739 
740                 step_mv = 50;
741                 break;
742         case TPS65911_REG_LDO3:
743         case TPS65911_REG_LDO5:
744         case TPS65911_REG_LDO6:
745         case TPS65911_REG_LDO7:
746         case TPS65911_REG_LDO8:
747                 /* The first 3 values of the selector correspond to 1V */
748                 if (selector < 3)
749                         selector = 0;
750                 else
751                         selector -= 2;
752 
753                 step_mv = 100;
754                 break;
755         case TPS65910_REG_VIO:
756                 return pmic->info[id]->voltage_table[selector];
757         default:
758                 return -EINVAL;
759         }
760 
761         return (LDO_MIN_VOLT + selector * step_mv) * 1000;
762 }
763 
764 /* Regulator ops (except VRTC) */
765 static struct regulator_ops tps65910_ops_dcdc = {
766         .is_enabled             = regulator_is_enabled_regmap,
767         .enable                 = regulator_enable_regmap,
768         .disable                = regulator_disable_regmap,
769         .set_mode               = tps65910_set_mode,
770         .get_mode               = tps65910_get_mode,
771         .get_voltage_sel        = tps65910_get_voltage_dcdc_sel,
772         .set_voltage_sel        = tps65910_set_voltage_dcdc_sel,
773         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
774         .list_voltage           = tps65910_list_voltage_dcdc,
775         .map_voltage            = regulator_map_voltage_ascend,
776 };
777 
778 static struct regulator_ops tps65910_ops_vdd3 = {
779         .is_enabled             = regulator_is_enabled_regmap,
780         .enable                 = regulator_enable_regmap,
781         .disable                = regulator_disable_regmap,
782         .set_mode               = tps65910_set_mode,
783         .get_mode               = tps65910_get_mode,
784         .get_voltage            = tps65910_get_voltage_vdd3,
785         .list_voltage           = regulator_list_voltage_table,
786         .map_voltage            = regulator_map_voltage_ascend,
787 };
788 
789 static struct regulator_ops tps65910_ops_vbb = {
790         .is_enabled             = regulator_is_enabled_regmap,
791         .enable                 = regulator_enable_regmap,
792         .disable                = regulator_disable_regmap,
793         .set_mode               = tps65910_set_mode,
794         .get_mode               = tps65910_get_mode,
795         .get_voltage_sel        = tps65910_get_voltage_sel,
796         .set_voltage_sel        = tps65910_set_voltage_sel,
797         .list_voltage           = regulator_list_voltage_table,
798         .map_voltage            = regulator_map_voltage_iterate,
799 };
800 
801 static struct regulator_ops tps65910_ops = {
802         .is_enabled             = regulator_is_enabled_regmap,
803         .enable                 = regulator_enable_regmap,
804         .disable                = regulator_disable_regmap,
805         .set_mode               = tps65910_set_mode,
806         .get_mode               = tps65910_get_mode,
807         .get_voltage_sel        = tps65910_get_voltage_sel,
808         .set_voltage_sel        = tps65910_set_voltage_sel,
809         .list_voltage           = regulator_list_voltage_table,
810         .map_voltage            = regulator_map_voltage_ascend,
811 };
812 
813 static struct regulator_ops tps65911_ops = {
814         .is_enabled             = regulator_is_enabled_regmap,
815         .enable                 = regulator_enable_regmap,
816         .disable                = regulator_disable_regmap,
817         .set_mode               = tps65910_set_mode,
818         .get_mode               = tps65910_get_mode,
819         .get_voltage_sel        = tps65911_get_voltage_sel,
820         .set_voltage_sel        = tps65911_set_voltage_sel,
821         .list_voltage           = tps65911_list_voltage,
822         .map_voltage            = regulator_map_voltage_ascend,
823 };
824 
825 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
826                 int id, int ext_sleep_config)
827 {
828         struct tps65910 *mfd = pmic->mfd;
829         u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
830         u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
831         int ret;
832 
833         /*
834          * Regulator can not be control from multiple external input EN1, EN2
835          * and EN3 together.
836          */
837         if (ext_sleep_config & EXT_SLEEP_CONTROL) {
838                 int en_count;
839                 en_count = ((ext_sleep_config &
840                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
841                 en_count += ((ext_sleep_config &
842                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
843                 en_count += ((ext_sleep_config &
844                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
845                 en_count += ((ext_sleep_config &
846                                 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
847                 if (en_count > 1) {
848                         dev_err(mfd->dev,
849                                 "External sleep control flag is not proper\n");
850                         return -EINVAL;
851                 }
852         }
853 
854         pmic->board_ext_control[id] = ext_sleep_config;
855 
856         /* External EN1 control */
857         if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
858                 ret = tps65910_reg_set_bits(mfd,
859                                 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
860         else
861                 ret = tps65910_reg_clear_bits(mfd,
862                                 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
863         if (ret < 0) {
864                 dev_err(mfd->dev,
865                         "Error in configuring external control EN1\n");
866                 return ret;
867         }
868 
869         /* External EN2 control */
870         if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
871                 ret = tps65910_reg_set_bits(mfd,
872                                 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
873         else
874                 ret = tps65910_reg_clear_bits(mfd,
875                                 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
876         if (ret < 0) {
877                 dev_err(mfd->dev,
878                         "Error in configuring external control EN2\n");
879                 return ret;
880         }
881 
882         /* External EN3 control for TPS65910 LDO only */
883         if ((tps65910_chip_id(mfd) == TPS65910) &&
884                         (id >= TPS65910_REG_VDIG1)) {
885                 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
886                         ret = tps65910_reg_set_bits(mfd,
887                                 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
888                 else
889                         ret = tps65910_reg_clear_bits(mfd,
890                                 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
891                 if (ret < 0) {
892                         dev_err(mfd->dev,
893                                 "Error in configuring external control EN3\n");
894                         return ret;
895                 }
896         }
897 
898         /* Return if no external control is selected */
899         if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
900                 /* Clear all sleep controls */
901                 ret = tps65910_reg_clear_bits(mfd,
902                         TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
903                 if (!ret)
904                         ret = tps65910_reg_clear_bits(mfd,
905                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
906                 if (ret < 0)
907                         dev_err(mfd->dev,
908                                 "Error in configuring SLEEP register\n");
909                 return ret;
910         }
911 
912         /*
913          * For regulator that has separate operational and sleep register make
914          * sure that operational is used and clear sleep register to turn
915          * regulator off when external control is inactive
916          */
917         if ((id == TPS65910_REG_VDD1) ||
918                 (id == TPS65910_REG_VDD2) ||
919                         ((id == TPS65911_REG_VDDCTRL) &&
920                                 (tps65910_chip_id(mfd) == TPS65911))) {
921                 int op_reg_add = pmic->get_ctrl_reg(id) + 1;
922                 int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
923                 int opvsel, srvsel;
924 
925                 ret = tps65910_reg_read(pmic->mfd, op_reg_add, &opvsel);
926                 if (ret < 0)
927                         return ret;
928                 ret = tps65910_reg_read(pmic->mfd, sr_reg_add, &srvsel);
929                 if (ret < 0)
930                         return ret;
931 
932                 if (opvsel & VDD1_OP_CMD_MASK) {
933                         u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
934 
935                         ret = tps65910_reg_write(pmic->mfd, op_reg_add,
936                                                  reg_val);
937                         if (ret < 0) {
938                                 dev_err(mfd->dev,
939                                         "Error in configuring op register\n");
940                                 return ret;
941                         }
942                 }
943                 ret = tps65910_reg_write(pmic->mfd, sr_reg_add, 0);
944                 if (ret < 0) {
945                         dev_err(mfd->dev, "Error in setting sr register\n");
946                         return ret;
947                 }
948         }
949 
950         ret = tps65910_reg_clear_bits(mfd,
951                         TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
952         if (!ret) {
953                 if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
954                         ret = tps65910_reg_set_bits(mfd,
955                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
956                 else
957                         ret = tps65910_reg_clear_bits(mfd,
958                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
959         }
960         if (ret < 0)
961                 dev_err(mfd->dev,
962                         "Error in configuring SLEEP register\n");
963 
964         return ret;
965 }
966 
967 #ifdef CONFIG_OF
968 
969 static struct of_regulator_match tps65910_matches[] = {
970         { .name = "vrtc",       .driver_data = (void *) &tps65910_regs[0] },
971         { .name = "vio",        .driver_data = (void *) &tps65910_regs[1] },
972         { .name = "vdd1",       .driver_data = (void *) &tps65910_regs[2] },
973         { .name = "vdd2",       .driver_data = (void *) &tps65910_regs[3] },
974         { .name = "vdd3",       .driver_data = (void *) &tps65910_regs[4] },
975         { .name = "vdig1",      .driver_data = (void *) &tps65910_regs[5] },
976         { .name = "vdig2",      .driver_data = (void *) &tps65910_regs[6] },
977         { .name = "vpll",       .driver_data = (void *) &tps65910_regs[7] },
978         { .name = "vdac",       .driver_data = (void *) &tps65910_regs[8] },
979         { .name = "vaux1",      .driver_data = (void *) &tps65910_regs[9] },
980         { .name = "vaux2",      .driver_data = (void *) &tps65910_regs[10] },
981         { .name = "vaux33",     .driver_data = (void *) &tps65910_regs[11] },
982         { .name = "vmmc",       .driver_data = (void *) &tps65910_regs[12] },
983         { .name = "vbb",        .driver_data = (void *) &tps65910_regs[13] },
984 };
985 
986 static struct of_regulator_match tps65911_matches[] = {
987         { .name = "vrtc",       .driver_data = (void *) &tps65911_regs[0] },
988         { .name = "vio",        .driver_data = (void *) &tps65911_regs[1] },
989         { .name = "vdd1",       .driver_data = (void *) &tps65911_regs[2] },
990         { .name = "vdd2",       .driver_data = (void *) &tps65911_regs[3] },
991         { .name = "vddctrl",    .driver_data = (void *) &tps65911_regs[4] },
992         { .name = "ldo1",       .driver_data = (void *) &tps65911_regs[5] },
993         { .name = "ldo2",       .driver_data = (void *) &tps65911_regs[6] },
994         { .name = "ldo3",       .driver_data = (void *) &tps65911_regs[7] },
995         { .name = "ldo4",       .driver_data = (void *) &tps65911_regs[8] },
996         { .name = "ldo5",       .driver_data = (void *) &tps65911_regs[9] },
997         { .name = "ldo6",       .driver_data = (void *) &tps65911_regs[10] },
998         { .name = "ldo7",       .driver_data = (void *) &tps65911_regs[11] },
999         { .name = "ldo8",       .driver_data = (void *) &tps65911_regs[12] },
1000 };
1001 
1002 static struct tps65910_board *tps65910_parse_dt_reg_data(
1003                 struct platform_device *pdev,
1004                 struct of_regulator_match **tps65910_reg_matches)
1005 {
1006         struct tps65910_board *pmic_plat_data;
1007         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1008         struct device_node *np, *regulators;
1009         struct of_regulator_match *matches;
1010         unsigned int prop;
1011         int idx = 0, ret, count;
1012 
1013         pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
1014                                         GFP_KERNEL);
1015         if (!pmic_plat_data)
1016                 return NULL;
1017 
1018         np = pdev->dev.parent->of_node;
1019         regulators = of_get_child_by_name(np, "regulators");
1020         if (!regulators) {
1021                 dev_err(&pdev->dev, "regulator node not found\n");
1022                 return NULL;
1023         }
1024 
1025         switch (tps65910_chip_id(tps65910)) {
1026         case TPS65910:
1027                 count = ARRAY_SIZE(tps65910_matches);
1028                 matches = tps65910_matches;
1029                 break;
1030         case TPS65911:
1031                 count = ARRAY_SIZE(tps65911_matches);
1032                 matches = tps65911_matches;
1033                 break;
1034         default:
1035                 of_node_put(regulators);
1036                 dev_err(&pdev->dev, "Invalid tps chip version\n");
1037                 return NULL;
1038         }
1039 
1040         ret = of_regulator_match(&pdev->dev, regulators, matches, count);
1041         of_node_put(regulators);
1042         if (ret < 0) {
1043                 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
1044                         ret);
1045                 return NULL;
1046         }
1047 
1048         *tps65910_reg_matches = matches;
1049 
1050         for (idx = 0; idx < count; idx++) {
1051                 if (!matches[idx].of_node)
1052                         continue;
1053 
1054                 pmic_plat_data->tps65910_pmic_init_data[idx] =
1055                                                         matches[idx].init_data;
1056 
1057                 ret = of_property_read_u32(matches[idx].of_node,
1058                                 "ti,regulator-ext-sleep-control", &prop);
1059                 if (!ret)
1060                         pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
1061 
1062         }
1063 
1064         return pmic_plat_data;
1065 }
1066 #else
1067 static inline struct tps65910_board *tps65910_parse_dt_reg_data(
1068                         struct platform_device *pdev,
1069                         struct of_regulator_match **tps65910_reg_matches)
1070 {
1071         *tps65910_reg_matches = NULL;
1072         return NULL;
1073 }
1074 #endif
1075 
1076 static int tps65910_probe(struct platform_device *pdev)
1077 {
1078         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1079         struct regulator_config config = { };
1080         struct tps_info *info;
1081         struct regulator_dev *rdev;
1082         struct tps65910_reg *pmic;
1083         struct tps65910_board *pmic_plat_data;
1084         struct of_regulator_match *tps65910_reg_matches = NULL;
1085         int i, err;
1086 
1087         pmic_plat_data = dev_get_platdata(tps65910->dev);
1088         if (!pmic_plat_data && tps65910->dev->of_node)
1089                 pmic_plat_data = tps65910_parse_dt_reg_data(pdev,
1090                                                 &tps65910_reg_matches);
1091 
1092         if (!pmic_plat_data) {
1093                 dev_err(&pdev->dev, "Platform data not found\n");
1094                 return -EINVAL;
1095         }
1096 
1097         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1098         if (!pmic)
1099                 return -ENOMEM;
1100 
1101         pmic->mfd = tps65910;
1102         platform_set_drvdata(pdev, pmic);
1103 
1104         /* Give control of all register to control port */
1105         tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
1106                                 DEVCTRL_SR_CTL_I2C_SEL_MASK);
1107 
1108         switch (tps65910_chip_id(tps65910)) {
1109         case TPS65910:
1110                 pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
1111                 pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
1112                 pmic->ext_sleep_control = tps65910_ext_sleep_control;
1113                 info = tps65910_regs;
1114                 break;
1115         case TPS65911:
1116                 pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
1117                 pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
1118                 pmic->ext_sleep_control = tps65911_ext_sleep_control;
1119                 info = tps65911_regs;
1120                 break;
1121         default:
1122                 dev_err(&pdev->dev, "Invalid tps chip version\n");
1123                 return -ENODEV;
1124         }
1125 
1126         pmic->desc = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1127                         sizeof(struct regulator_desc), GFP_KERNEL);
1128         if (!pmic->desc)
1129                 return -ENOMEM;
1130 
1131         pmic->info = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1132                         sizeof(struct tps_info *), GFP_KERNEL);
1133         if (!pmic->info)
1134                 return -ENOMEM;
1135 
1136         pmic->rdev = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1137                         sizeof(struct regulator_dev *), GFP_KERNEL);
1138         if (!pmic->rdev)
1139                 return -ENOMEM;
1140 
1141         for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS;
1142                         i++, info++) {
1143                 /* Register the regulators */
1144                 pmic->info[i] = info;
1145 
1146                 pmic->desc[i].name = info->name;
1147                 pmic->desc[i].supply_name = info->vin_name;
1148                 pmic->desc[i].id = i;
1149                 pmic->desc[i].n_voltages = info->n_voltages;
1150                 pmic->desc[i].enable_time = info->enable_time_us;
1151 
1152                 if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
1153                         pmic->desc[i].ops = &tps65910_ops_dcdc;
1154                         pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
1155                                                         VDD1_2_NUM_VOLT_COARSE;
1156                         pmic->desc[i].ramp_delay = 12500;
1157                 } else if (i == TPS65910_REG_VDD3) {
1158                         if (tps65910_chip_id(tps65910) == TPS65910) {
1159                                 pmic->desc[i].ops = &tps65910_ops_vdd3;
1160                                 pmic->desc[i].volt_table = info->voltage_table;
1161                         } else {
1162                                 pmic->desc[i].ops = &tps65910_ops_dcdc;
1163                                 pmic->desc[i].ramp_delay = 5000;
1164                         }
1165                 } else if (i == TPS65910_REG_VBB &&
1166                                 tps65910_chip_id(tps65910) == TPS65910) {
1167                         pmic->desc[i].ops = &tps65910_ops_vbb;
1168                         pmic->desc[i].volt_table = info->voltage_table;
1169                 } else {
1170                         if (tps65910_chip_id(tps65910) == TPS65910) {
1171                                 pmic->desc[i].ops = &tps65910_ops;
1172                                 pmic->desc[i].volt_table = info->voltage_table;
1173                         } else {
1174                                 pmic->desc[i].ops = &tps65911_ops;
1175                         }
1176                 }
1177 
1178                 err = tps65910_set_ext_sleep_config(pmic, i,
1179                                 pmic_plat_data->regulator_ext_sleep_control[i]);
1180                 /*
1181                  * Failing on regulator for configuring externally control
1182                  * is not a serious issue, just throw warning.
1183                  */
1184                 if (err < 0)
1185                         dev_warn(tps65910->dev,
1186                                 "Failed to initialise ext control config\n");
1187 
1188                 pmic->desc[i].type = REGULATOR_VOLTAGE;
1189                 pmic->desc[i].owner = THIS_MODULE;
1190                 pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
1191                 pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
1192 
1193                 config.dev = tps65910->dev;
1194                 config.init_data = pmic_plat_data->tps65910_pmic_init_data[i];
1195                 config.driver_data = pmic;
1196                 config.regmap = tps65910->regmap;
1197 
1198                 if (tps65910_reg_matches)
1199                         config.of_node = tps65910_reg_matches[i].of_node;
1200 
1201                 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[i],
1202                                                &config);
1203                 if (IS_ERR(rdev)) {
1204                         dev_err(tps65910->dev,
1205                                 "failed to register %s regulator\n",
1206                                 pdev->name);
1207                         return PTR_ERR(rdev);
1208                 }
1209 
1210                 /* Save regulator for cleanup */
1211                 pmic->rdev[i] = rdev;
1212         }
1213         return 0;
1214 }
1215 
1216 static void tps65910_shutdown(struct platform_device *pdev)
1217 {
1218         struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1219         int i;
1220 
1221         /*
1222          * Before bootloader jumps to kernel, it makes sure that required
1223          * external control signals are in desired state so that given rails
1224          * can be configure accordingly.
1225          * If rails are configured to be controlled from external control
1226          * then before shutting down/rebooting the system, the external
1227          * control configuration need to be remove from the rails so that
1228          * its output will be available as per register programming even
1229          * if external controls are removed. This is require when the POR
1230          * value of the control signals are not in active state and before
1231          * bootloader initializes it, the system requires the rail output
1232          * to be active for booting.
1233          */
1234         for (i = 0; i < pmic->num_regulators; i++) {
1235                 int err;
1236                 if (!pmic->rdev[i])
1237                         continue;
1238 
1239                 err = tps65910_set_ext_sleep_config(pmic, i, 0);
1240                 if (err < 0)
1241                         dev_err(&pdev->dev,
1242                                 "Error in clearing external control\n");
1243         }
1244 }
1245 
1246 static struct platform_driver tps65910_driver = {
1247         .driver = {
1248                 .name = "tps65910-pmic",
1249         },
1250         .probe = tps65910_probe,
1251         .shutdown = tps65910_shutdown,
1252 };
1253 
1254 static int __init tps65910_init(void)
1255 {
1256         return platform_driver_register(&tps65910_driver);
1257 }
1258 subsys_initcall(tps65910_init);
1259 
1260 static void __exit tps65910_cleanup(void)
1261 {
1262         platform_driver_unregister(&tps65910_driver);
1263 }
1264 module_exit(tps65910_cleanup);
1265 
1266 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1267 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
1268 MODULE_LICENSE("GPL v2");
1269 MODULE_ALIAS("platform:tps65910-pmic");
1270 

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