parport_pc: show the detection of a 2 serial port ITE8874 chip
[linux-2.6.git] / drivers / regulator / tps6507x-regulator.c
1 /*
2  * tps6507x-regulator.c
3  *
4  * Regulator driver for TPS65073 PMIC
5  *
6  * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation version 2.
11  *
12  * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
13  * whether express or implied; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  */
17
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/err.h>
22 #include <linux/platform_device.h>
23 #include <linux/regulator/driver.h>
24 #include <linux/regulator/machine.h>
25 #include <linux/regulator/tps6507x.h>
26 #include <linux/delay.h>
27 #include <linux/slab.h>
28 #include <linux/mfd/tps6507x.h>
29
30 /* DCDC's */
31 #define TPS6507X_DCDC_1                         0
32 #define TPS6507X_DCDC_2                         1
33 #define TPS6507X_DCDC_3                         2
34 /* LDOs */
35 #define TPS6507X_LDO_1                          3
36 #define TPS6507X_LDO_2                          4
37
38 #define TPS6507X_MAX_REG_ID                     TPS6507X_LDO_2
39
40 /* Number of step-down converters available */
41 #define TPS6507X_NUM_DCDC                       3
42 /* Number of LDO voltage regulators  available */
43 #define TPS6507X_NUM_LDO                        2
44 /* Number of total regulators available */
45 #define TPS6507X_NUM_REGULATOR          (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
46
47 /* Supported voltage values for regulators (in milliVolts) */
48 static const u16 VDCDCx_VSEL_table[] = {
49         725, 750, 775, 800,
50         825, 850, 875, 900,
51         925, 950, 975, 1000,
52         1025, 1050, 1075, 1100,
53         1125, 1150, 1175, 1200,
54         1225, 1250, 1275, 1300,
55         1325, 1350, 1375, 1400,
56         1425, 1450, 1475, 1500,
57         1550, 1600, 1650, 1700,
58         1750, 1800, 1850, 1900,
59         1950, 2000, 2050, 2100,
60         2150, 2200, 2250, 2300,
61         2350, 2400, 2450, 2500,
62         2550, 2600, 2650, 2700,
63         2750, 2800, 2850, 2900,
64         3000, 3100, 3200, 3300,
65 };
66
67 static const u16 LDO1_VSEL_table[] = {
68         1000, 1100, 1200, 1250,
69         1300, 1350, 1400, 1500,
70         1600, 1800, 2500, 2750,
71         2800, 3000, 3100, 3300,
72 };
73
74 static const u16 LDO2_VSEL_table[] = {
75         725, 750, 775, 800,
76         825, 850, 875, 900,
77         925, 950, 975, 1000,
78         1025, 1050, 1075, 1100,
79         1125, 1150, 1175, 1200,
80         1225, 1250, 1275, 1300,
81         1325, 1350, 1375, 1400,
82         1425, 1450, 1475, 1500,
83         1550, 1600, 1650, 1700,
84         1750, 1800, 1850, 1900,
85         1950, 2000, 2050, 2100,
86         2150, 2200, 2250, 2300,
87         2350, 2400, 2450, 2500,
88         2550, 2600, 2650, 2700,
89         2750, 2800, 2850, 2900,
90         3000, 3100, 3200, 3300,
91 };
92
93 static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table),
94                                 ARRAY_SIZE(VDCDCx_VSEL_table),
95                                 ARRAY_SIZE(VDCDCx_VSEL_table),
96                                 ARRAY_SIZE(LDO1_VSEL_table),
97                                 ARRAY_SIZE(LDO2_VSEL_table)};
98
99 struct tps_info {
100         const char *name;
101         unsigned min_uV;
102         unsigned max_uV;
103         u8 table_len;
104         const u16 *table;
105
106         /* Does DCDC high or the low register defines output voltage? */
107         bool defdcdc_default;
108 };
109
110 static struct tps_info tps6507x_pmic_regs[] = {
111         {
112                 .name = "VDCDC1",
113                 .min_uV = 725000,
114                 .max_uV = 3300000,
115                 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
116                 .table = VDCDCx_VSEL_table,
117         },
118         {
119                 .name = "VDCDC2",
120                 .min_uV = 725000,
121                 .max_uV = 3300000,
122                 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
123                 .table = VDCDCx_VSEL_table,
124         },
125         {
126                 .name = "VDCDC3",
127                 .min_uV = 725000,
128                 .max_uV = 3300000,
129                 .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
130                 .table = VDCDCx_VSEL_table,
131         },
132         {
133                 .name = "LDO1",
134                 .min_uV = 1000000,
135                 .max_uV = 3300000,
136                 .table_len = ARRAY_SIZE(LDO1_VSEL_table),
137                 .table = LDO1_VSEL_table,
138         },
139         {
140                 .name = "LDO2",
141                 .min_uV = 725000,
142                 .max_uV = 3300000,
143                 .table_len = ARRAY_SIZE(LDO2_VSEL_table),
144                 .table = LDO2_VSEL_table,
145         },
146 };
147
148 struct tps6507x_pmic {
149         struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
150         struct tps6507x_dev *mfd;
151         struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
152         struct tps_info *info[TPS6507X_NUM_REGULATOR];
153         struct mutex io_lock;
154 };
155 static inline int tps6507x_pmic_read(struct tps6507x_pmic *tps, u8 reg)
156 {
157         u8 val;
158         int err;
159
160         err = tps->mfd->read_dev(tps->mfd, reg, 1, &val);
161
162         if (err)
163                 return err;
164
165         return val;
166 }
167
168 static inline int tps6507x_pmic_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
169 {
170         return tps->mfd->write_dev(tps->mfd, reg, 1, &val);
171 }
172
173 static int tps6507x_pmic_set_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
174 {
175         int err, data;
176
177         mutex_lock(&tps->io_lock);
178
179         data = tps6507x_pmic_read(tps, reg);
180         if (data < 0) {
181                 dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
182                 err = data;
183                 goto out;
184         }
185
186         data |= mask;
187         err = tps6507x_pmic_write(tps, reg, data);
188         if (err)
189                 dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
190
191 out:
192         mutex_unlock(&tps->io_lock);
193         return err;
194 }
195
196 static int tps6507x_pmic_clear_bits(struct tps6507x_pmic *tps, u8 reg, u8 mask)
197 {
198         int err, data;
199
200         mutex_lock(&tps->io_lock);
201
202         data = tps6507x_pmic_read(tps, reg);
203         if (data < 0) {
204                 dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
205                 err = data;
206                 goto out;
207         }
208
209         data &= ~mask;
210         err = tps6507x_pmic_write(tps, reg, data);
211         if (err)
212                 dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
213
214 out:
215         mutex_unlock(&tps->io_lock);
216         return err;
217 }
218
219 static int tps6507x_pmic_reg_read(struct tps6507x_pmic *tps, u8 reg)
220 {
221         int data;
222
223         mutex_lock(&tps->io_lock);
224
225         data = tps6507x_pmic_read(tps, reg);
226         if (data < 0)
227                 dev_err(tps->mfd->dev, "Read from reg 0x%x failed\n", reg);
228
229         mutex_unlock(&tps->io_lock);
230         return data;
231 }
232
233 static int tps6507x_pmic_reg_write(struct tps6507x_pmic *tps, u8 reg, u8 val)
234 {
235         int err;
236
237         mutex_lock(&tps->io_lock);
238
239         err = tps6507x_pmic_write(tps, reg, val);
240         if (err < 0)
241                 dev_err(tps->mfd->dev, "Write for reg 0x%x failed\n", reg);
242
243         mutex_unlock(&tps->io_lock);
244         return err;
245 }
246
247 static int tps6507x_pmic_dcdc_is_enabled(struct regulator_dev *dev)
248 {
249         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
250         int data, dcdc = rdev_get_id(dev);
251         u8 shift;
252
253         if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
254                 return -EINVAL;
255
256         shift = TPS6507X_MAX_REG_ID - dcdc;
257         data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
258
259         if (data < 0)
260                 return data;
261         else
262                 return (data & 1<<shift) ? 1 : 0;
263 }
264
265 static int tps6507x_pmic_ldo_is_enabled(struct regulator_dev *dev)
266 {
267         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
268         int data, ldo = rdev_get_id(dev);
269         u8 shift;
270
271         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
272                 return -EINVAL;
273
274         shift = TPS6507X_MAX_REG_ID - ldo;
275         data = tps6507x_pmic_reg_read(tps, TPS6507X_REG_CON_CTRL1);
276
277         if (data < 0)
278                 return data;
279         else
280                 return (data & 1<<shift) ? 1 : 0;
281 }
282
283 static int tps6507x_pmic_dcdc_enable(struct regulator_dev *dev)
284 {
285         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
286         int dcdc = rdev_get_id(dev);
287         u8 shift;
288
289         if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
290                 return -EINVAL;
291
292         shift = TPS6507X_MAX_REG_ID - dcdc;
293         return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
294 }
295
296 static int tps6507x_pmic_dcdc_disable(struct regulator_dev *dev)
297 {
298         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
299         int dcdc = rdev_get_id(dev);
300         u8 shift;
301
302         if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
303                 return -EINVAL;
304
305         shift = TPS6507X_MAX_REG_ID - dcdc;
306         return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
307                                         1 << shift);
308 }
309
310 static int tps6507x_pmic_ldo_enable(struct regulator_dev *dev)
311 {
312         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
313         int ldo = rdev_get_id(dev);
314         u8 shift;
315
316         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
317                 return -EINVAL;
318
319         shift = TPS6507X_MAX_REG_ID - ldo;
320         return tps6507x_pmic_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
321 }
322
323 static int tps6507x_pmic_ldo_disable(struct regulator_dev *dev)
324 {
325         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
326         int ldo = rdev_get_id(dev);
327         u8 shift;
328
329         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
330                 return -EINVAL;
331
332         shift = TPS6507X_MAX_REG_ID - ldo;
333         return tps6507x_pmic_clear_bits(tps, TPS6507X_REG_CON_CTRL1,
334                                         1 << shift);
335 }
336
337 static int tps6507x_pmic_dcdc_get_voltage(struct regulator_dev *dev)
338 {
339         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
340         int data, dcdc = rdev_get_id(dev);
341         u8 reg;
342
343         switch (dcdc) {
344         case TPS6507X_DCDC_1:
345                 reg = TPS6507X_REG_DEFDCDC1;
346                 break;
347         case TPS6507X_DCDC_2:
348                 if (tps->info[dcdc]->defdcdc_default)
349                         reg = TPS6507X_REG_DEFDCDC2_HIGH;
350                 else
351                         reg = TPS6507X_REG_DEFDCDC2_LOW;
352                 break;
353         case TPS6507X_DCDC_3:
354                 if (tps->info[dcdc]->defdcdc_default)
355                         reg = TPS6507X_REG_DEFDCDC3_HIGH;
356                 else
357                         reg = TPS6507X_REG_DEFDCDC3_LOW;
358                 break;
359         default:
360                 return -EINVAL;
361         }
362
363         data = tps6507x_pmic_reg_read(tps, reg);
364         if (data < 0)
365                 return data;
366
367         data &= TPS6507X_DEFDCDCX_DCDC_MASK;
368         return tps->info[dcdc]->table[data] * 1000;
369 }
370
371 static int tps6507x_pmic_dcdc_set_voltage(struct regulator_dev *dev,
372                                 int min_uV, int max_uV)
373 {
374         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
375         int data, vsel, dcdc = rdev_get_id(dev);
376         u8 reg;
377
378         switch (dcdc) {
379         case TPS6507X_DCDC_1:
380                 reg = TPS6507X_REG_DEFDCDC1;
381                 break;
382         case TPS6507X_DCDC_2:
383                 if (tps->info[dcdc]->defdcdc_default)
384                         reg = TPS6507X_REG_DEFDCDC2_HIGH;
385                 else
386                         reg = TPS6507X_REG_DEFDCDC2_LOW;
387                 break;
388         case TPS6507X_DCDC_3:
389                 if (tps->info[dcdc]->defdcdc_default)
390                         reg = TPS6507X_REG_DEFDCDC3_HIGH;
391                 else
392                         reg = TPS6507X_REG_DEFDCDC3_LOW;
393                 break;
394         default:
395                 return -EINVAL;
396         }
397
398         if (min_uV < tps->info[dcdc]->min_uV
399                 || min_uV > tps->info[dcdc]->max_uV)
400                 return -EINVAL;
401         if (max_uV < tps->info[dcdc]->min_uV
402                 || max_uV > tps->info[dcdc]->max_uV)
403                 return -EINVAL;
404
405         for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
406                 int mV = tps->info[dcdc]->table[vsel];
407                 int uV = mV * 1000;
408
409                 /* Break at the first in-range value */
410                 if (min_uV <= uV && uV <= max_uV)
411                         break;
412         }
413
414         /* write to the register in case we found a match */
415         if (vsel == tps->info[dcdc]->table_len)
416                 return -EINVAL;
417
418         data = tps6507x_pmic_reg_read(tps, reg);
419         if (data < 0)
420                 return data;
421
422         data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
423         data |= vsel;
424
425         return tps6507x_pmic_reg_write(tps, reg, data);
426 }
427
428 static int tps6507x_pmic_ldo_get_voltage(struct regulator_dev *dev)
429 {
430         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
431         int data, ldo = rdev_get_id(dev);
432         u8 reg, mask;
433
434         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
435                 return -EINVAL;
436         else {
437                 reg = (ldo == TPS6507X_LDO_1 ?
438                         TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
439                 mask = (ldo == TPS6507X_LDO_1 ?
440                         TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
441                                 TPS6507X_REG_DEFLDO2_LDO2_MASK);
442         }
443
444         data = tps6507x_pmic_reg_read(tps, reg);
445         if (data < 0)
446                 return data;
447
448         data &= mask;
449         return tps->info[ldo]->table[data] * 1000;
450 }
451
452 static int tps6507x_pmic_ldo_set_voltage(struct regulator_dev *dev,
453                                 int min_uV, int max_uV)
454 {
455         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
456         int data, vsel, ldo = rdev_get_id(dev);
457         u8 reg, mask;
458
459         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
460                 return -EINVAL;
461         else {
462                 reg = (ldo == TPS6507X_LDO_1 ?
463                         TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
464                 mask = (ldo == TPS6507X_LDO_1 ?
465                         TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
466                                 TPS6507X_REG_DEFLDO2_LDO2_MASK);
467         }
468
469         if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
470                 return -EINVAL;
471         if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
472                 return -EINVAL;
473
474         for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
475                 int mV = tps->info[ldo]->table[vsel];
476                 int uV = mV * 1000;
477
478                 /* Break at the first in-range value */
479                 if (min_uV <= uV && uV <= max_uV)
480                         break;
481         }
482
483         if (vsel == tps->info[ldo]->table_len)
484                 return -EINVAL;
485
486         data = tps6507x_pmic_reg_read(tps, reg);
487         if (data < 0)
488                 return data;
489
490         data &= ~mask;
491         data |= vsel;
492
493         return tps6507x_pmic_reg_write(tps, reg, data);
494 }
495
496 static int tps6507x_pmic_dcdc_list_voltage(struct regulator_dev *dev,
497                                         unsigned selector)
498 {
499         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
500         int dcdc = rdev_get_id(dev);
501
502         if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
503                 return -EINVAL;
504
505         if (selector >= tps->info[dcdc]->table_len)
506                 return -EINVAL;
507         else
508                 return tps->info[dcdc]->table[selector] * 1000;
509 }
510
511 static int tps6507x_pmic_ldo_list_voltage(struct regulator_dev *dev,
512                                         unsigned selector)
513 {
514         struct tps6507x_pmic *tps = rdev_get_drvdata(dev);
515         int ldo = rdev_get_id(dev);
516
517         if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
518                 return -EINVAL;
519
520         if (selector >= tps->info[ldo]->table_len)
521                 return -EINVAL;
522         else
523                 return tps->info[ldo]->table[selector] * 1000;
524 }
525
526 /* Operations permitted on VDCDCx */
527 static struct regulator_ops tps6507x_pmic_dcdc_ops = {
528         .is_enabled = tps6507x_pmic_dcdc_is_enabled,
529         .enable = tps6507x_pmic_dcdc_enable,
530         .disable = tps6507x_pmic_dcdc_disable,
531         .get_voltage = tps6507x_pmic_dcdc_get_voltage,
532         .set_voltage = tps6507x_pmic_dcdc_set_voltage,
533         .list_voltage = tps6507x_pmic_dcdc_list_voltage,
534 };
535
536 /* Operations permitted on LDOx */
537 static struct regulator_ops tps6507x_pmic_ldo_ops = {
538         .is_enabled = tps6507x_pmic_ldo_is_enabled,
539         .enable = tps6507x_pmic_ldo_enable,
540         .disable = tps6507x_pmic_ldo_disable,
541         .get_voltage = tps6507x_pmic_ldo_get_voltage,
542         .set_voltage = tps6507x_pmic_ldo_set_voltage,
543         .list_voltage = tps6507x_pmic_ldo_list_voltage,
544 };
545
546 static __devinit
547 int tps6507x_pmic_probe(struct platform_device *pdev)
548 {
549         struct tps6507x_dev *tps6507x_dev = dev_get_drvdata(pdev->dev.parent);
550         static int desc_id;
551         struct tps_info *info = &tps6507x_pmic_regs[0];
552         struct regulator_init_data *init_data;
553         struct regulator_dev *rdev;
554         struct tps6507x_pmic *tps;
555         struct tps6507x_board *tps_board;
556         int i;
557         int error;
558
559         /**
560          * tps_board points to pmic related constants
561          * coming from the board-evm file.
562          */
563
564         tps_board = dev_get_platdata(tps6507x_dev->dev);
565         if (!tps_board)
566                 return -EINVAL;
567
568         /**
569          * init_data points to array of regulator_init structures
570          * coming from the board-evm file.
571          */
572         init_data = tps_board->tps6507x_pmic_init_data;
573         if (!init_data)
574                 return -EINVAL;
575
576         tps = kzalloc(sizeof(*tps), GFP_KERNEL);
577         if (!tps)
578                 return -ENOMEM;
579
580         mutex_init(&tps->io_lock);
581
582         /* common for all regulators */
583         tps->mfd = tps6507x_dev;
584
585         for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
586                 /* Register the regulators */
587                 tps->info[i] = info;
588                 if (init_data->driver_data) {
589                         struct tps6507x_reg_platform_data *data =
590                                                         init_data->driver_data;
591                         tps->info[i]->defdcdc_default = data->defdcdc_default;
592                 }
593
594                 tps->desc[i].name = info->name;
595                 tps->desc[i].id = desc_id++;
596                 tps->desc[i].n_voltages = num_voltages[i];
597                 tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
598                 &tps6507x_pmic_ldo_ops : &tps6507x_pmic_dcdc_ops);
599                 tps->desc[i].type = REGULATOR_VOLTAGE;
600                 tps->desc[i].owner = THIS_MODULE;
601
602                 rdev = regulator_register(&tps->desc[i],
603                                         tps6507x_dev->dev, init_data, tps);
604                 if (IS_ERR(rdev)) {
605                         dev_err(tps6507x_dev->dev,
606                                 "failed to register %s regulator\n",
607                                 pdev->name);
608                         error = PTR_ERR(rdev);
609                         goto fail;
610                 }
611
612                 /* Save regulator for cleanup */
613                 tps->rdev[i] = rdev;
614         }
615
616         tps6507x_dev->pmic = tps;
617
618         return 0;
619
620 fail:
621         while (--i >= 0)
622                 regulator_unregister(tps->rdev[i]);
623
624         kfree(tps);
625         return error;
626 }
627
628 /**
629  * tps6507x_remove - TPS6507x driver i2c remove handler
630  * @client: i2c driver client device structure
631  *
632  * Unregister TPS driver as an i2c client device driver
633  */
634 static int __devexit tps6507x_pmic_remove(struct platform_device *pdev)
635 {
636         struct tps6507x_dev *tps6507x_dev = platform_get_drvdata(pdev);
637         struct tps6507x_pmic *tps = tps6507x_dev->pmic;
638         int i;
639
640         for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
641                 regulator_unregister(tps->rdev[i]);
642
643         kfree(tps);
644
645         return 0;
646 }
647
648 static struct platform_driver tps6507x_pmic_driver = {
649         .driver = {
650                 .name = "tps6507x-pmic",
651                 .owner = THIS_MODULE,
652         },
653         .probe = tps6507x_pmic_probe,
654         .remove = __devexit_p(tps6507x_pmic_remove),
655 };
656
657 /**
658  * tps6507x_pmic_init
659  *
660  * Module init function
661  */
662 static int __init tps6507x_pmic_init(void)
663 {
664         return platform_driver_register(&tps6507x_pmic_driver);
665 }
666 subsys_initcall(tps6507x_pmic_init);
667
668 /**
669  * tps6507x_pmic_cleanup
670  *
671  * Module exit function
672  */
673 static void __exit tps6507x_pmic_cleanup(void)
674 {
675         platform_driver_unregister(&tps6507x_pmic_driver);
676 }
677 module_exit(tps6507x_pmic_cleanup);
678
679 MODULE_AUTHOR("Texas Instruments");
680 MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
681 MODULE_LICENSE("GPL v2");
682 MODULE_ALIAS("platform:tps6507x-pmic");