regulator: tps65910: set input_supply on desc unconditionally
[linux-3.10.git] / 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/platform_device.h>
21 #include <linux/regulator/driver.h>
22 #include <linux/regulator/machine.h>
23 #include <linux/slab.h>
24 #include <linux/gpio.h>
25 #include <linux/mfd/tps65910.h>
26 #include <linux/regulator/of_regulator.h>
27
28 #define TPS65910_SUPPLY_STATE_ENABLED   0x1
29 #define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 |       \
30                         TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 |          \
31                         TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 |          \
32                         TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
33
34 /* supported VIO voltages in microvolts */
35 static const unsigned int VIO_VSEL_table[] = {
36         1500000, 1800000, 2500000, 3300000,
37 };
38
39 /* VSEL tables for TPS65910 specific LDOs and dcdc's */
40
41 /* supported VDD3 voltages in microvolts */
42 static const unsigned int VDD3_VSEL_table[] = {
43         5000000,
44 };
45
46 /* supported VDIG1 voltages in microvolts */
47 static const unsigned int VDIG1_VSEL_table[] = {
48         1200000, 1500000, 1800000, 2700000,
49 };
50
51 /* supported VDIG2 voltages in microvolts */
52 static const unsigned int VDIG2_VSEL_table[] = {
53         1000000, 1100000, 1200000, 1800000,
54 };
55
56 /* supported VPLL voltages in microvolts */
57 static const unsigned int VPLL_VSEL_table[] = {
58         1000000, 1100000, 1800000, 2500000,
59 };
60
61 /* supported VDAC voltages in microvolts */
62 static const unsigned int VDAC_VSEL_table[] = {
63         1800000, 2600000, 2800000, 2850000,
64 };
65
66 /* supported VAUX1 voltages in microvolts */
67 static const unsigned int VAUX1_VSEL_table[] = {
68         1800000, 2500000, 2800000, 2850000,
69 };
70
71 /* supported VAUX2 voltages in microvolts */
72 static const unsigned int VAUX2_VSEL_table[] = {
73         1800000, 2800000, 2900000, 3300000,
74 };
75
76 /* supported VAUX33 voltages in microvolts */
77 static const unsigned int VAUX33_VSEL_table[] = {
78         1800000, 2000000, 2800000, 3300000,
79 };
80
81 /* supported VMMC voltages in microvolts */
82 static const unsigned int VMMC_VSEL_table[] = {
83         1800000, 2800000, 3000000, 3300000,
84 };
85
86 struct tps_info {
87         const char *name;
88         const char *vin_name;
89         u8 n_voltages;
90         const unsigned int *voltage_table;
91         int enable_time_us;
92 };
93
94 static struct tps_info tps65910_regs[] = {
95         {
96                 .name = "vrtc",
97                 .vin_name = "vcc7",
98                 .enable_time_us = 2200,
99         },
100         {
101                 .name = "vio",
102                 .vin_name = "vccio",
103                 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
104                 .voltage_table = VIO_VSEL_table,
105                 .enable_time_us = 350,
106         },
107         {
108                 .name = "vdd1",
109                 .vin_name = "vcc1",
110                 .enable_time_us = 350,
111         },
112         {
113                 .name = "vdd2",
114                 .vin_name = "vcc2",
115                 .enable_time_us = 350,
116         },
117         {
118                 .name = "vdd3",
119                 .n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
120                 .voltage_table = VDD3_VSEL_table,
121                 .enable_time_us = 200,
122         },
123         {
124                 .name = "vdig1",
125                 .vin_name = "vcc6",
126                 .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
127                 .voltage_table = VDIG1_VSEL_table,
128                 .enable_time_us = 100,
129         },
130         {
131                 .name = "vdig2",
132                 .vin_name = "vcc6",
133                 .n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
134                 .voltage_table = VDIG2_VSEL_table,
135                 .enable_time_us = 100,
136         },
137         {
138                 .name = "vpll",
139                 .vin_name = "vcc5",
140                 .n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
141                 .voltage_table = VPLL_VSEL_table,
142                 .enable_time_us = 100,
143         },
144         {
145                 .name = "vdac",
146                 .vin_name = "vcc5",
147                 .n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
148                 .voltage_table = VDAC_VSEL_table,
149                 .enable_time_us = 100,
150         },
151         {
152                 .name = "vaux1",
153                 .vin_name = "vcc4",
154                 .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
155                 .voltage_table = VAUX1_VSEL_table,
156                 .enable_time_us = 100,
157         },
158         {
159                 .name = "vaux2",
160                 .vin_name = "vcc4",
161                 .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
162                 .voltage_table = VAUX2_VSEL_table,
163                 .enable_time_us = 100,
164         },
165         {
166                 .name = "vaux33",
167                 .vin_name = "vcc3",
168                 .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
169                 .voltage_table = VAUX33_VSEL_table,
170                 .enable_time_us = 100,
171         },
172         {
173                 .name = "vmmc",
174                 .vin_name = "vcc3",
175                 .n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
176                 .voltage_table = VMMC_VSEL_table,
177                 .enable_time_us = 100,
178         },
179 };
180
181 static struct tps_info tps65911_regs[] = {
182         {
183                 .name = "vrtc",
184                 .vin_name = "vcc7",
185                 .enable_time_us = 2200,
186         },
187         {
188                 .name = "vio",
189                 .vin_name = "vccio",
190                 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
191                 .voltage_table = VIO_VSEL_table,
192                 .enable_time_us = 350,
193         },
194         {
195                 .name = "vdd1",
196                 .vin_name = "vcc1",
197                 .n_voltages = 0x4C,
198                 .enable_time_us = 350,
199         },
200         {
201                 .name = "vdd2",
202                 .vin_name = "vcc2",
203                 .n_voltages = 0x4C,
204                 .enable_time_us = 350,
205         },
206         {
207                 .name = "vddctrl",
208                 .n_voltages = 0x44,
209                 .enable_time_us = 900,
210         },
211         {
212                 .name = "ldo1",
213                 .vin_name = "vcc6",
214                 .n_voltages = 0x33,
215                 .enable_time_us = 420,
216         },
217         {
218                 .name = "ldo2",
219                 .vin_name = "vcc6",
220                 .n_voltages = 0x33,
221                 .enable_time_us = 420,
222         },
223         {
224                 .name = "ldo3",
225                 .vin_name = "vcc5",
226                 .n_voltages = 0x1A,
227                 .enable_time_us = 230,
228         },
229         {
230                 .name = "ldo4",
231                 .vin_name = "vcc5",
232                 .n_voltages = 0x33,
233                 .enable_time_us = 230,
234         },
235         {
236                 .name = "ldo5",
237                 .vin_name = "vcc4",
238                 .n_voltages = 0x1A,
239                 .enable_time_us = 230,
240         },
241         {
242                 .name = "ldo6",
243                 .vin_name = "vcc3",
244                 .n_voltages = 0x1A,
245                 .enable_time_us = 230,
246         },
247         {
248                 .name = "ldo7",
249                 .vin_name = "vcc3",
250                 .n_voltages = 0x1A,
251                 .enable_time_us = 230,
252         },
253         {
254                 .name = "ldo8",
255                 .vin_name = "vcc3",
256                 .n_voltages = 0x1A,
257                 .enable_time_us = 230,
258         },
259 };
260
261 #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
262 static unsigned int tps65910_ext_sleep_control[] = {
263         0,
264         EXT_CONTROL_REG_BITS(VIO,    1, 0),
265         EXT_CONTROL_REG_BITS(VDD1,   1, 1),
266         EXT_CONTROL_REG_BITS(VDD2,   1, 2),
267         EXT_CONTROL_REG_BITS(VDD3,   1, 3),
268         EXT_CONTROL_REG_BITS(VDIG1,  0, 1),
269         EXT_CONTROL_REG_BITS(VDIG2,  0, 2),
270         EXT_CONTROL_REG_BITS(VPLL,   0, 6),
271         EXT_CONTROL_REG_BITS(VDAC,   0, 7),
272         EXT_CONTROL_REG_BITS(VAUX1,  0, 3),
273         EXT_CONTROL_REG_BITS(VAUX2,  0, 4),
274         EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
275         EXT_CONTROL_REG_BITS(VMMC,   0, 0),
276 };
277
278 static unsigned int tps65911_ext_sleep_control[] = {
279         0,
280         EXT_CONTROL_REG_BITS(VIO,     1, 0),
281         EXT_CONTROL_REG_BITS(VDD1,    1, 1),
282         EXT_CONTROL_REG_BITS(VDD2,    1, 2),
283         EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
284         EXT_CONTROL_REG_BITS(LDO1,    0, 1),
285         EXT_CONTROL_REG_BITS(LDO2,    0, 2),
286         EXT_CONTROL_REG_BITS(LDO3,    0, 7),
287         EXT_CONTROL_REG_BITS(LDO4,    0, 6),
288         EXT_CONTROL_REG_BITS(LDO5,    0, 3),
289         EXT_CONTROL_REG_BITS(LDO6,    0, 0),
290         EXT_CONTROL_REG_BITS(LDO7,    0, 5),
291         EXT_CONTROL_REG_BITS(LDO8,    0, 4),
292 };
293
294 struct tps65910_reg {
295         struct regulator_desc *desc;
296         struct tps65910 *mfd;
297         struct regulator_dev **rdev;
298         struct tps_info **info;
299         int num_regulators;
300         int mode;
301         int  (*get_ctrl_reg)(int);
302         unsigned int *ext_sleep_control;
303         unsigned int board_ext_control[TPS65910_NUM_REGS];
304 };
305
306 static int tps65910_get_ctrl_register(int id)
307 {
308         switch (id) {
309         case TPS65910_REG_VRTC:
310                 return TPS65910_VRTC;
311         case TPS65910_REG_VIO:
312                 return TPS65910_VIO;
313         case TPS65910_REG_VDD1:
314                 return TPS65910_VDD1;
315         case TPS65910_REG_VDD2:
316                 return TPS65910_VDD2;
317         case TPS65910_REG_VDD3:
318                 return TPS65910_VDD3;
319         case TPS65910_REG_VDIG1:
320                 return TPS65910_VDIG1;
321         case TPS65910_REG_VDIG2:
322                 return TPS65910_VDIG2;
323         case TPS65910_REG_VPLL:
324                 return TPS65910_VPLL;
325         case TPS65910_REG_VDAC:
326                 return TPS65910_VDAC;
327         case TPS65910_REG_VAUX1:
328                 return TPS65910_VAUX1;
329         case TPS65910_REG_VAUX2:
330                 return TPS65910_VAUX2;
331         case TPS65910_REG_VAUX33:
332                 return TPS65910_VAUX33;
333         case TPS65910_REG_VMMC:
334                 return TPS65910_VMMC;
335         default:
336                 return -EINVAL;
337         }
338 }
339
340 static int tps65911_get_ctrl_register(int id)
341 {
342         switch (id) {
343         case TPS65910_REG_VRTC:
344                 return TPS65910_VRTC;
345         case TPS65910_REG_VIO:
346                 return TPS65910_VIO;
347         case TPS65910_REG_VDD1:
348                 return TPS65910_VDD1;
349         case TPS65910_REG_VDD2:
350                 return TPS65910_VDD2;
351         case TPS65911_REG_VDDCTRL:
352                 return TPS65911_VDDCTRL;
353         case TPS65911_REG_LDO1:
354                 return TPS65911_LDO1;
355         case TPS65911_REG_LDO2:
356                 return TPS65911_LDO2;
357         case TPS65911_REG_LDO3:
358                 return TPS65911_LDO3;
359         case TPS65911_REG_LDO4:
360                 return TPS65911_LDO4;
361         case TPS65911_REG_LDO5:
362                 return TPS65911_LDO5;
363         case TPS65911_REG_LDO6:
364                 return TPS65911_LDO6;
365         case TPS65911_REG_LDO7:
366                 return TPS65911_LDO7;
367         case TPS65911_REG_LDO8:
368                 return TPS65911_LDO8;
369         default:
370                 return -EINVAL;
371         }
372 }
373
374 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
375 {
376         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
377         struct tps65910 *mfd = pmic->mfd;
378         int reg, value, id = rdev_get_id(dev);
379
380         reg = pmic->get_ctrl_reg(id);
381         if (reg < 0)
382                 return reg;
383
384         switch (mode) {
385         case REGULATOR_MODE_NORMAL:
386                 return tps65910_reg_update_bits(pmic->mfd, reg,
387                                                 LDO_ST_MODE_BIT | LDO_ST_ON_BIT,
388                                                 LDO_ST_ON_BIT);
389         case REGULATOR_MODE_IDLE:
390                 value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
391                 return tps65910_reg_set_bits(mfd, reg, value);
392         case REGULATOR_MODE_STANDBY:
393                 return tps65910_reg_clear_bits(mfd, reg, LDO_ST_ON_BIT);
394         }
395
396         return -EINVAL;
397 }
398
399 static unsigned int tps65910_get_mode(struct regulator_dev *dev)
400 {
401         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
402         int ret, reg, value, id = rdev_get_id(dev);
403
404         reg = pmic->get_ctrl_reg(id);
405         if (reg < 0)
406                 return reg;
407
408         ret = tps65910_reg_read(pmic->mfd, reg, &value);
409         if (ret < 0)
410                 return ret;
411
412         if (!(value & LDO_ST_ON_BIT))
413                 return REGULATOR_MODE_STANDBY;
414         else if (value & LDO_ST_MODE_BIT)
415                 return REGULATOR_MODE_IDLE;
416         else
417                 return REGULATOR_MODE_NORMAL;
418 }
419
420 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
421 {
422         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
423         int ret, id = rdev_get_id(dev);
424         int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
425
426         switch (id) {
427         case TPS65910_REG_VDD1:
428                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_OP, &opvsel);
429                 if (ret < 0)
430                         return ret;
431                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1, &mult);
432                 if (ret < 0)
433                         return ret;
434                 mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
435                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_SR, &srvsel);
436                 if (ret < 0)
437                         return ret;
438                 sr = opvsel & VDD1_OP_CMD_MASK;
439                 opvsel &= VDD1_OP_SEL_MASK;
440                 srvsel &= VDD1_SR_SEL_MASK;
441                 vselmax = 75;
442                 break;
443         case TPS65910_REG_VDD2:
444                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_OP, &opvsel);
445                 if (ret < 0)
446                         return ret;
447                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2, &mult);
448                 if (ret < 0)
449                         return ret;
450                 mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
451                 ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_SR, &srvsel);
452                 if (ret < 0)
453                         return ret;
454                 sr = opvsel & VDD2_OP_CMD_MASK;
455                 opvsel &= VDD2_OP_SEL_MASK;
456                 srvsel &= VDD2_SR_SEL_MASK;
457                 vselmax = 75;
458                 break;
459         case TPS65911_REG_VDDCTRL:
460                 ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_OP,
461                                         &opvsel);
462                 if (ret < 0)
463                         return ret;
464                 ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_SR,
465                                         &srvsel);
466                 if (ret < 0)
467                         return ret;
468                 sr = opvsel & VDDCTRL_OP_CMD_MASK;
469                 opvsel &= VDDCTRL_OP_SEL_MASK;
470                 srvsel &= VDDCTRL_SR_SEL_MASK;
471                 vselmax = 64;
472                 break;
473         }
474
475         /* multiplier 0 == 1 but 2,3 normal */
476         if (!mult)
477                 mult=1;
478
479         if (sr) {
480                 /* normalise to valid range */
481                 if (srvsel < 3)
482                         srvsel = 3;
483                 if (srvsel > vselmax)
484                         srvsel = vselmax;
485                 return srvsel - 3;
486         } else {
487
488                 /* normalise to valid range*/
489                 if (opvsel < 3)
490                         opvsel = 3;
491                 if (opvsel > vselmax)
492                         opvsel = vselmax;
493                 return opvsel - 3;
494         }
495         return -EINVAL;
496 }
497
498 static int tps65910_get_voltage_sel(struct regulator_dev *dev)
499 {
500         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
501         int ret, reg, value, id = rdev_get_id(dev);
502
503         reg = pmic->get_ctrl_reg(id);
504         if (reg < 0)
505                 return reg;
506
507         ret = tps65910_reg_read(pmic->mfd, reg, &value);
508         if (ret < 0)
509                 return ret;
510
511         switch (id) {
512         case TPS65910_REG_VIO:
513         case TPS65910_REG_VDIG1:
514         case TPS65910_REG_VDIG2:
515         case TPS65910_REG_VPLL:
516         case TPS65910_REG_VDAC:
517         case TPS65910_REG_VAUX1:
518         case TPS65910_REG_VAUX2:
519         case TPS65910_REG_VAUX33:
520         case TPS65910_REG_VMMC:
521                 value &= LDO_SEL_MASK;
522                 value >>= LDO_SEL_SHIFT;
523                 break;
524         default:
525                 return -EINVAL;
526         }
527
528         return value;
529 }
530
531 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
532 {
533         return dev->desc->volt_table[0];
534 }
535
536 static int tps65911_get_voltage_sel(struct regulator_dev *dev)
537 {
538         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
539         int ret, id = rdev_get_id(dev);
540         unsigned int value, reg;
541
542         reg = pmic->get_ctrl_reg(id);
543
544         ret = tps65910_reg_read(pmic->mfd, reg, &value);
545         if (ret < 0)
546                 return ret;
547
548         switch (id) {
549         case TPS65911_REG_LDO1:
550         case TPS65911_REG_LDO2:
551         case TPS65911_REG_LDO4:
552                 value &= LDO1_SEL_MASK;
553                 value >>= LDO_SEL_SHIFT;
554                 break;
555         case TPS65911_REG_LDO3:
556         case TPS65911_REG_LDO5:
557         case TPS65911_REG_LDO6:
558         case TPS65911_REG_LDO7:
559         case TPS65911_REG_LDO8:
560                 value &= LDO3_SEL_MASK;
561                 value >>= LDO_SEL_SHIFT;
562                 break;
563         case TPS65910_REG_VIO:
564                 value &= LDO_SEL_MASK;
565                 value >>= LDO_SEL_SHIFT;
566                 break;
567         default:
568                 return -EINVAL;
569         }
570
571         return value;
572 }
573
574 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
575                                          unsigned selector)
576 {
577         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
578         int id = rdev_get_id(dev), vsel;
579         int dcdc_mult = 0;
580
581         switch (id) {
582         case TPS65910_REG_VDD1:
583                 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
584                 if (dcdc_mult == 1)
585                         dcdc_mult--;
586                 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
587
588                 tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD1,
589                                          VDD1_VGAIN_SEL_MASK,
590                                          dcdc_mult << VDD1_VGAIN_SEL_SHIFT);
591                 tps65910_reg_write(pmic->mfd, TPS65910_VDD1_OP, vsel);
592                 break;
593         case TPS65910_REG_VDD2:
594                 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
595                 if (dcdc_mult == 1)
596                         dcdc_mult--;
597                 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
598
599                 tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD2,
600                                          VDD1_VGAIN_SEL_MASK,
601                                          dcdc_mult << VDD2_VGAIN_SEL_SHIFT);
602                 tps65910_reg_write(pmic->mfd, TPS65910_VDD2_OP, vsel);
603                 break;
604         case TPS65911_REG_VDDCTRL:
605                 vsel = selector + 3;
606                 tps65910_reg_write(pmic->mfd, TPS65911_VDDCTRL_OP, vsel);
607         }
608
609         return 0;
610 }
611
612 static int tps65910_set_voltage_sel(struct regulator_dev *dev,
613                                     unsigned selector)
614 {
615         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
616         int reg, id = rdev_get_id(dev);
617
618         reg = pmic->get_ctrl_reg(id);
619         if (reg < 0)
620                 return reg;
621
622         switch (id) {
623         case TPS65910_REG_VIO:
624         case TPS65910_REG_VDIG1:
625         case TPS65910_REG_VDIG2:
626         case TPS65910_REG_VPLL:
627         case TPS65910_REG_VDAC:
628         case TPS65910_REG_VAUX1:
629         case TPS65910_REG_VAUX2:
630         case TPS65910_REG_VAUX33:
631         case TPS65910_REG_VMMC:
632                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
633                                                 selector << LDO_SEL_SHIFT);
634         }
635
636         return -EINVAL;
637 }
638
639 static int tps65911_set_voltage_sel(struct regulator_dev *dev,
640                                     unsigned selector)
641 {
642         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
643         int reg, id = rdev_get_id(dev);
644
645         reg = pmic->get_ctrl_reg(id);
646         if (reg < 0)
647                 return reg;
648
649         switch (id) {
650         case TPS65911_REG_LDO1:
651         case TPS65911_REG_LDO2:
652         case TPS65911_REG_LDO4:
653                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO1_SEL_MASK,
654                                                 selector << LDO_SEL_SHIFT);
655         case TPS65911_REG_LDO3:
656         case TPS65911_REG_LDO5:
657         case TPS65911_REG_LDO6:
658         case TPS65911_REG_LDO7:
659         case TPS65911_REG_LDO8:
660                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO3_SEL_MASK,
661                                                 selector << LDO_SEL_SHIFT);
662         case TPS65910_REG_VIO:
663                 return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
664                                                 selector << LDO_SEL_SHIFT);
665         }
666
667         return -EINVAL;
668 }
669
670
671 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
672                                         unsigned selector)
673 {
674         int volt, mult = 1, id = rdev_get_id(dev);
675
676         switch (id) {
677         case TPS65910_REG_VDD1:
678         case TPS65910_REG_VDD2:
679                 mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
680                 volt = VDD1_2_MIN_VOLT +
681                                 (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
682                 break;
683         case TPS65911_REG_VDDCTRL:
684                 volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
685                 break;
686         default:
687                 BUG();
688                 return -EINVAL;
689         }
690
691         return  volt * 100 * mult;
692 }
693
694 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
695 {
696         struct tps65910_reg *pmic = rdev_get_drvdata(dev);
697         int step_mv = 0, id = rdev_get_id(dev);
698
699         switch(id) {
700         case TPS65911_REG_LDO1:
701         case TPS65911_REG_LDO2:
702         case TPS65911_REG_LDO4:
703                 /* The first 5 values of the selector correspond to 1V */
704                 if (selector < 5)
705                         selector = 0;
706                 else
707                         selector -= 4;
708
709                 step_mv = 50;
710                 break;
711         case TPS65911_REG_LDO3:
712         case TPS65911_REG_LDO5:
713         case TPS65911_REG_LDO6:
714         case TPS65911_REG_LDO7:
715         case TPS65911_REG_LDO8:
716                 /* The first 3 values of the selector correspond to 1V */
717                 if (selector < 3)
718                         selector = 0;
719                 else
720                         selector -= 2;
721
722                 step_mv = 100;
723                 break;
724         case TPS65910_REG_VIO:
725                 return pmic->info[id]->voltage_table[selector];
726         default:
727                 return -EINVAL;
728         }
729
730         return (LDO_MIN_VOLT + selector * step_mv) * 1000;
731 }
732
733 /* Regulator ops (except VRTC) */
734 static struct regulator_ops tps65910_ops_dcdc = {
735         .is_enabled             = regulator_is_enabled_regmap,
736         .enable                 = regulator_enable_regmap,
737         .disable                = regulator_disable_regmap,
738         .set_mode               = tps65910_set_mode,
739         .get_mode               = tps65910_get_mode,
740         .get_voltage_sel        = tps65910_get_voltage_dcdc_sel,
741         .set_voltage_sel        = tps65910_set_voltage_dcdc_sel,
742         .set_voltage_time_sel   = regulator_set_voltage_time_sel,
743         .list_voltage           = tps65910_list_voltage_dcdc,
744 };
745
746 static struct regulator_ops tps65910_ops_vdd3 = {
747         .is_enabled             = regulator_is_enabled_regmap,
748         .enable                 = regulator_enable_regmap,
749         .disable                = regulator_disable_regmap,
750         .set_mode               = tps65910_set_mode,
751         .get_mode               = tps65910_get_mode,
752         .get_voltage            = tps65910_get_voltage_vdd3,
753         .list_voltage           = regulator_list_voltage_table,
754 };
755
756 static struct regulator_ops tps65910_ops = {
757         .is_enabled             = regulator_is_enabled_regmap,
758         .enable                 = regulator_enable_regmap,
759         .disable                = regulator_disable_regmap,
760         .set_mode               = tps65910_set_mode,
761         .get_mode               = tps65910_get_mode,
762         .get_voltage_sel        = tps65910_get_voltage_sel,
763         .set_voltage_sel        = tps65910_set_voltage_sel,
764         .list_voltage           = regulator_list_voltage_table,
765 };
766
767 static struct regulator_ops tps65911_ops = {
768         .is_enabled             = regulator_is_enabled_regmap,
769         .enable                 = regulator_enable_regmap,
770         .disable                = regulator_disable_regmap,
771         .set_mode               = tps65910_set_mode,
772         .get_mode               = tps65910_get_mode,
773         .get_voltage_sel        = tps65911_get_voltage_sel,
774         .set_voltage_sel        = tps65911_set_voltage_sel,
775         .list_voltage           = tps65911_list_voltage,
776 };
777
778 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
779                 int id, int ext_sleep_config)
780 {
781         struct tps65910 *mfd = pmic->mfd;
782         u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
783         u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
784         int ret;
785
786         /*
787          * Regulator can not be control from multiple external input EN1, EN2
788          * and EN3 together.
789          */
790         if (ext_sleep_config & EXT_SLEEP_CONTROL) {
791                 int en_count;
792                 en_count = ((ext_sleep_config &
793                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
794                 en_count += ((ext_sleep_config &
795                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
796                 en_count += ((ext_sleep_config &
797                                 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
798                 en_count += ((ext_sleep_config &
799                                 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
800                 if (en_count > 1) {
801                         dev_err(mfd->dev,
802                                 "External sleep control flag is not proper\n");
803                         return -EINVAL;
804                 }
805         }
806
807         pmic->board_ext_control[id] = ext_sleep_config;
808
809         /* External EN1 control */
810         if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
811                 ret = tps65910_reg_set_bits(mfd,
812                                 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
813         else
814                 ret = tps65910_reg_clear_bits(mfd,
815                                 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
816         if (ret < 0) {
817                 dev_err(mfd->dev,
818                         "Error in configuring external control EN1\n");
819                 return ret;
820         }
821
822         /* External EN2 control */
823         if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
824                 ret = tps65910_reg_set_bits(mfd,
825                                 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
826         else
827                 ret = tps65910_reg_clear_bits(mfd,
828                                 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
829         if (ret < 0) {
830                 dev_err(mfd->dev,
831                         "Error in configuring external control EN2\n");
832                 return ret;
833         }
834
835         /* External EN3 control for TPS65910 LDO only */
836         if ((tps65910_chip_id(mfd) == TPS65910) &&
837                         (id >= TPS65910_REG_VDIG1)) {
838                 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
839                         ret = tps65910_reg_set_bits(mfd,
840                                 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
841                 else
842                         ret = tps65910_reg_clear_bits(mfd,
843                                 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
844                 if (ret < 0) {
845                         dev_err(mfd->dev,
846                                 "Error in configuring external control EN3\n");
847                         return ret;
848                 }
849         }
850
851         /* Return if no external control is selected */
852         if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
853                 /* Clear all sleep controls */
854                 ret = tps65910_reg_clear_bits(mfd,
855                         TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
856                 if (!ret)
857                         ret = tps65910_reg_clear_bits(mfd,
858                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
859                 if (ret < 0)
860                         dev_err(mfd->dev,
861                                 "Error in configuring SLEEP register\n");
862                 return ret;
863         }
864
865         /*
866          * For regulator that has separate operational and sleep register make
867          * sure that operational is used and clear sleep register to turn
868          * regulator off when external control is inactive
869          */
870         if ((id == TPS65910_REG_VDD1) ||
871                 (id == TPS65910_REG_VDD2) ||
872                         ((id == TPS65911_REG_VDDCTRL) &&
873                                 (tps65910_chip_id(mfd) == TPS65911))) {
874                 int op_reg_add = pmic->get_ctrl_reg(id) + 1;
875                 int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
876                 int opvsel, srvsel;
877
878                 ret = tps65910_reg_read(pmic->mfd, op_reg_add, &opvsel);
879                 if (ret < 0)
880                         return ret;
881                 ret = tps65910_reg_read(pmic->mfd, sr_reg_add, &srvsel);
882                 if (ret < 0)
883                         return ret;
884
885                 if (opvsel & VDD1_OP_CMD_MASK) {
886                         u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
887
888                         ret = tps65910_reg_write(pmic->mfd, op_reg_add,
889                                                  reg_val);
890                         if (ret < 0) {
891                                 dev_err(mfd->dev,
892                                         "Error in configuring op register\n");
893                                 return ret;
894                         }
895                 }
896                 ret = tps65910_reg_write(pmic->mfd, sr_reg_add, 0);
897                 if (ret < 0) {
898                         dev_err(mfd->dev, "Error in settting sr register\n");
899                         return ret;
900                 }
901         }
902
903         ret = tps65910_reg_clear_bits(mfd,
904                         TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
905         if (!ret) {
906                 if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
907                         ret = tps65910_reg_set_bits(mfd,
908                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
909                 else
910                         ret = tps65910_reg_clear_bits(mfd,
911                                 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
912         }
913         if (ret < 0)
914                 dev_err(mfd->dev,
915                         "Error in configuring SLEEP register\n");
916
917         return ret;
918 }
919
920 #ifdef CONFIG_OF
921
922 static struct of_regulator_match tps65910_matches[] = {
923         { .name = "vrtc",       .driver_data = (void *) &tps65910_regs[0] },
924         { .name = "vio",        .driver_data = (void *) &tps65910_regs[1] },
925         { .name = "vdd1",       .driver_data = (void *) &tps65910_regs[2] },
926         { .name = "vdd2",       .driver_data = (void *) &tps65910_regs[3] },
927         { .name = "vdd3",       .driver_data = (void *) &tps65910_regs[4] },
928         { .name = "vdig1",      .driver_data = (void *) &tps65910_regs[5] },
929         { .name = "vdig2",      .driver_data = (void *) &tps65910_regs[6] },
930         { .name = "vpll",       .driver_data = (void *) &tps65910_regs[7] },
931         { .name = "vdac",       .driver_data = (void *) &tps65910_regs[8] },
932         { .name = "vaux1",      .driver_data = (void *) &tps65910_regs[9] },
933         { .name = "vaux2",      .driver_data = (void *) &tps65910_regs[10] },
934         { .name = "vaux33",     .driver_data = (void *) &tps65910_regs[11] },
935         { .name = "vmmc",       .driver_data = (void *) &tps65910_regs[12] },
936 };
937
938 static struct of_regulator_match tps65911_matches[] = {
939         { .name = "vrtc",       .driver_data = (void *) &tps65911_regs[0] },
940         { .name = "vio",        .driver_data = (void *) &tps65911_regs[1] },
941         { .name = "vdd1",       .driver_data = (void *) &tps65911_regs[2] },
942         { .name = "vdd2",       .driver_data = (void *) &tps65911_regs[3] },
943         { .name = "vddctrl",    .driver_data = (void *) &tps65911_regs[4] },
944         { .name = "ldo1",       .driver_data = (void *) &tps65911_regs[5] },
945         { .name = "ldo2",       .driver_data = (void *) &tps65911_regs[6] },
946         { .name = "ldo3",       .driver_data = (void *) &tps65911_regs[7] },
947         { .name = "ldo4",       .driver_data = (void *) &tps65911_regs[8] },
948         { .name = "ldo5",       .driver_data = (void *) &tps65911_regs[9] },
949         { .name = "ldo6",       .driver_data = (void *) &tps65911_regs[10] },
950         { .name = "ldo7",       .driver_data = (void *) &tps65911_regs[11] },
951         { .name = "ldo8",       .driver_data = (void *) &tps65911_regs[12] },
952 };
953
954 static struct tps65910_board *tps65910_parse_dt_reg_data(
955                 struct platform_device *pdev,
956                 struct of_regulator_match **tps65910_reg_matches)
957 {
958         struct tps65910_board *pmic_plat_data;
959         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
960         struct device_node *np = pdev->dev.parent->of_node;
961         struct device_node *regulators;
962         struct of_regulator_match *matches;
963         unsigned int prop;
964         int idx = 0, ret, count;
965
966         pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
967                                         GFP_KERNEL);
968
969         if (!pmic_plat_data) {
970                 dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
971                 return NULL;
972         }
973
974         regulators = of_find_node_by_name(np, "regulators");
975         if (!regulators) {
976                 dev_err(&pdev->dev, "regulator node not found\n");
977                 return NULL;
978         }
979
980         switch (tps65910_chip_id(tps65910)) {
981         case TPS65910:
982                 count = ARRAY_SIZE(tps65910_matches);
983                 matches = tps65910_matches;
984                 break;
985         case TPS65911:
986                 count = ARRAY_SIZE(tps65911_matches);
987                 matches = tps65911_matches;
988                 break;
989         default:
990                 dev_err(&pdev->dev, "Invalid tps chip version\n");
991                 return NULL;
992         }
993
994         ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
995         if (ret < 0) {
996                 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
997                         ret);
998                 return NULL;
999         }
1000
1001         *tps65910_reg_matches = matches;
1002
1003         for (idx = 0; idx < count; idx++) {
1004                 if (!matches[idx].init_data || !matches[idx].of_node)
1005                         continue;
1006
1007                 pmic_plat_data->tps65910_pmic_init_data[idx] =
1008                                                         matches[idx].init_data;
1009
1010                 ret = of_property_read_u32(matches[idx].of_node,
1011                                 "ti,regulator-ext-sleep-control", &prop);
1012                 if (!ret)
1013                         pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
1014
1015         }
1016
1017         return pmic_plat_data;
1018 }
1019 #else
1020 static inline struct tps65910_board *tps65910_parse_dt_reg_data(
1021                         struct platform_device *pdev,
1022                         struct of_regulator_match **tps65910_reg_matches)
1023 {
1024         *tps65910_reg_matches = NULL;
1025         return NULL;
1026 }
1027 #endif
1028
1029 static __devinit int tps65910_probe(struct platform_device *pdev)
1030 {
1031         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1032         struct regulator_config config = { };
1033         struct tps_info *info;
1034         struct regulator_init_data *reg_data;
1035         struct regulator_dev *rdev;
1036         struct tps65910_reg *pmic;
1037         struct tps65910_board *pmic_plat_data;
1038         struct of_regulator_match *tps65910_reg_matches = NULL;
1039         int i, err;
1040
1041         pmic_plat_data = dev_get_platdata(tps65910->dev);
1042         if (!pmic_plat_data && tps65910->dev->of_node)
1043                 pmic_plat_data = tps65910_parse_dt_reg_data(pdev,
1044                                                 &tps65910_reg_matches);
1045
1046         if (!pmic_plat_data) {
1047                 dev_err(&pdev->dev, "Platform data not found\n");
1048                 return -EINVAL;
1049         }
1050
1051         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1052         if (!pmic) {
1053                 dev_err(&pdev->dev, "Memory allocation failed for pmic\n");
1054                 return -ENOMEM;
1055         }
1056
1057         pmic->mfd = tps65910;
1058         platform_set_drvdata(pdev, pmic);
1059
1060         /* Give control of all register to control port */
1061         tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
1062                                 DEVCTRL_SR_CTL_I2C_SEL_MASK);
1063
1064         switch(tps65910_chip_id(tps65910)) {
1065         case TPS65910:
1066                 pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
1067                 pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
1068                 pmic->ext_sleep_control = tps65910_ext_sleep_control;
1069                 info = tps65910_regs;
1070                 break;
1071         case TPS65911:
1072                 pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
1073                 pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
1074                 pmic->ext_sleep_control = tps65911_ext_sleep_control;
1075                 info = tps65911_regs;
1076                 break;
1077         default:
1078                 dev_err(&pdev->dev, "Invalid tps chip version\n");
1079                 return -ENODEV;
1080         }
1081
1082         pmic->desc = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1083                         sizeof(struct regulator_desc), GFP_KERNEL);
1084         if (!pmic->desc) {
1085                 dev_err(&pdev->dev, "Memory alloc fails for desc\n");
1086                 return -ENOMEM;
1087         }
1088
1089         pmic->info = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1090                         sizeof(struct tps_info *), GFP_KERNEL);
1091         if (!pmic->info) {
1092                 dev_err(&pdev->dev, "Memory alloc fails for info\n");
1093                 return -ENOMEM;
1094         }
1095
1096         pmic->rdev = devm_kzalloc(&pdev->dev, pmic->num_regulators *
1097                         sizeof(struct regulator_dev *), GFP_KERNEL);
1098         if (!pmic->rdev) {
1099                 dev_err(&pdev->dev, "Memory alloc fails for rdev\n");
1100                 return -ENOMEM;
1101         }
1102
1103         for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS;
1104                         i++, info++) {
1105
1106                 reg_data = pmic_plat_data->tps65910_pmic_init_data[i];
1107
1108                 /* Regulator API handles empty constraints but not NULL
1109                  * constraints */
1110                 if (!reg_data)
1111                         continue;
1112
1113                 /* Register the regulators */
1114                 pmic->info[i] = info;
1115
1116                 pmic->desc[i].name = info->name;
1117                 pmic->desc[i].supply_name = info->vin_name;
1118                 pmic->desc[i].id = i;
1119                 pmic->desc[i].n_voltages = info->n_voltages;
1120                 pmic->desc[i].enable_time = info->enable_time_us;
1121
1122                 if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
1123                         pmic->desc[i].ops = &tps65910_ops_dcdc;
1124                         pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
1125                                                         VDD1_2_NUM_VOLT_COARSE;
1126                         pmic->desc[i].ramp_delay = 12500;
1127                 } else if (i == TPS65910_REG_VDD3) {
1128                         if (tps65910_chip_id(tps65910) == TPS65910) {
1129                                 pmic->desc[i].ops = &tps65910_ops_vdd3;
1130                                 pmic->desc[i].volt_table = info->voltage_table;
1131                         } else {
1132                                 pmic->desc[i].ops = &tps65910_ops_dcdc;
1133                                 pmic->desc[i].ramp_delay = 5000;
1134                         }
1135                 } else {
1136                         if (tps65910_chip_id(tps65910) == TPS65910) {
1137                                 pmic->desc[i].ops = &tps65910_ops;
1138                                 pmic->desc[i].volt_table = info->voltage_table;
1139                         } else {
1140                                 pmic->desc[i].ops = &tps65911_ops;
1141                         }
1142                 }
1143
1144                 err = tps65910_set_ext_sleep_config(pmic, i,
1145                                 pmic_plat_data->regulator_ext_sleep_control[i]);
1146                 /*
1147                  * Failing on regulator for configuring externally control
1148                  * is not a serious issue, just throw warning.
1149                  */
1150                 if (err < 0)
1151                         dev_warn(tps65910->dev,
1152                                 "Failed to initialise ext control config\n");
1153
1154                 pmic->desc[i].type = REGULATOR_VOLTAGE;
1155                 pmic->desc[i].owner = THIS_MODULE;
1156                 pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
1157                 pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
1158
1159                 config.dev = tps65910->dev;
1160                 config.init_data = reg_data;
1161                 config.driver_data = pmic;
1162                 config.regmap = tps65910->regmap;
1163
1164                 if (tps65910_reg_matches)
1165                         config.of_node = tps65910_reg_matches[i].of_node;
1166
1167                 rdev = regulator_register(&pmic->desc[i], &config);
1168                 if (IS_ERR(rdev)) {
1169                         dev_err(tps65910->dev,
1170                                 "failed to register %s regulator\n",
1171                                 pdev->name);
1172                         err = PTR_ERR(rdev);
1173                         goto err_unregister_regulator;
1174                 }
1175
1176                 /* Save regulator for cleanup */
1177                 pmic->rdev[i] = rdev;
1178         }
1179         return 0;
1180
1181 err_unregister_regulator:
1182         while (--i >= 0)
1183                 regulator_unregister(pmic->rdev[i]);
1184         return err;
1185 }
1186
1187 static int __devexit tps65910_remove(struct platform_device *pdev)
1188 {
1189         struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1190         int i;
1191
1192         for (i = 0; i < pmic->num_regulators; i++)
1193                 regulator_unregister(pmic->rdev[i]);
1194
1195         return 0;
1196 }
1197
1198 static void tps65910_shutdown(struct platform_device *pdev)
1199 {
1200         struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1201         int i;
1202
1203         /*
1204          * Before bootloader jumps to kernel, it makes sure that required
1205          * external control signals are in desired state so that given rails
1206          * can be configure accordingly.
1207          * If rails are configured to be controlled from external control
1208          * then before shutting down/rebooting the system, the external
1209          * control configuration need to be remove from the rails so that
1210          * its output will be available as per register programming even
1211          * if external controls are removed. This is require when the POR
1212          * value of the control signals are not in active state and before
1213          * bootloader initializes it, the system requires the rail output
1214          * to be active for booting.
1215          */
1216         for (i = 0; i < pmic->num_regulators; i++) {
1217                 int err;
1218                 if (!pmic->rdev[i])
1219                         continue;
1220
1221                 err = tps65910_set_ext_sleep_config(pmic, i, 0);
1222                 if (err < 0)
1223                         dev_err(&pdev->dev,
1224                                 "Error in clearing external control\n");
1225         }
1226 }
1227
1228 static struct platform_driver tps65910_driver = {
1229         .driver = {
1230                 .name = "tps65910-pmic",
1231                 .owner = THIS_MODULE,
1232         },
1233         .probe = tps65910_probe,
1234         .remove = __devexit_p(tps65910_remove),
1235         .shutdown = tps65910_shutdown,
1236 };
1237
1238 static int __init tps65910_init(void)
1239 {
1240         return platform_driver_register(&tps65910_driver);
1241 }
1242 subsys_initcall(tps65910_init);
1243
1244 static void __exit tps65910_cleanup(void)
1245 {
1246         platform_driver_unregister(&tps65910_driver);
1247 }
1248 module_exit(tps65910_cleanup);
1249
1250 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1251 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
1252 MODULE_LICENSE("GPL v2");
1253 MODULE_ALIAS("platform:tps65910-pmic");