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regulator: tps65910: use small letter for regulator names
[deliverable/linux.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 milivolts */
35 static const u16 VIO_VSEL_table[] = {
36 1500, 1800, 2500, 3300,
37 };
38
39 /* VSEL tables for TPS65910 specific LDOs and dcdc's */
40
41 /* supported VDD3 voltages in milivolts */
42 static const u16 VDD3_VSEL_table[] = {
43 5000,
44 };
45
46 /* supported VDIG1 voltages in milivolts */
47 static const u16 VDIG1_VSEL_table[] = {
48 1200, 1500, 1800, 2700,
49 };
50
51 /* supported VDIG2 voltages in milivolts */
52 static const u16 VDIG2_VSEL_table[] = {
53 1000, 1100, 1200, 1800,
54 };
55
56 /* supported VPLL voltages in milivolts */
57 static const u16 VPLL_VSEL_table[] = {
58 1000, 1100, 1800, 2500,
59 };
60
61 /* supported VDAC voltages in milivolts */
62 static const u16 VDAC_VSEL_table[] = {
63 1800, 2600, 2800, 2850,
64 };
65
66 /* supported VAUX1 voltages in milivolts */
67 static const u16 VAUX1_VSEL_table[] = {
68 1800, 2500, 2800, 2850,
69 };
70
71 /* supported VAUX2 voltages in milivolts */
72 static const u16 VAUX2_VSEL_table[] = {
73 1800, 2800, 2900, 3300,
74 };
75
76 /* supported VAUX33 voltages in milivolts */
77 static const u16 VAUX33_VSEL_table[] = {
78 1800, 2000, 2800, 3300,
79 };
80
81 /* supported VMMC voltages in milivolts */
82 static const u16 VMMC_VSEL_table[] = {
83 1800, 2800, 3000, 3300,
84 };
85
86 struct tps_info {
87 const char *name;
88 unsigned min_uV;
89 unsigned max_uV;
90 u8 n_voltages;
91 const u16 *voltage_table;
92 int enable_time_us;
93 };
94
95 static struct tps_info tps65910_regs[] = {
96 {
97 .name = "vrtc",
98 .enable_time_us = 2200,
99 },
100 {
101 .name = "vio",
102 .min_uV = 1500000,
103 .max_uV = 3300000,
104 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
105 .voltage_table = VIO_VSEL_table,
106 .enable_time_us = 350,
107 },
108 {
109 .name = "vdd1",
110 .min_uV = 600000,
111 .max_uV = 4500000,
112 .enable_time_us = 350,
113 },
114 {
115 .name = "vdd2",
116 .min_uV = 600000,
117 .max_uV = 4500000,
118 .enable_time_us = 350,
119 },
120 {
121 .name = "vdd3",
122 .min_uV = 5000000,
123 .max_uV = 5000000,
124 .n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
125 .voltage_table = VDD3_VSEL_table,
126 .enable_time_us = 200,
127 },
128 {
129 .name = "vdig1",
130 .min_uV = 1200000,
131 .max_uV = 2700000,
132 .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
133 .voltage_table = VDIG1_VSEL_table,
134 .enable_time_us = 100,
135 },
136 {
137 .name = "vdig2",
138 .min_uV = 1000000,
139 .max_uV = 1800000,
140 .n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
141 .voltage_table = VDIG2_VSEL_table,
142 .enable_time_us = 100,
143 },
144 {
145 .name = "vpll",
146 .min_uV = 1000000,
147 .max_uV = 2500000,
148 .n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
149 .voltage_table = VPLL_VSEL_table,
150 .enable_time_us = 100,
151 },
152 {
153 .name = "vdac",
154 .min_uV = 1800000,
155 .max_uV = 2850000,
156 .n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
157 .voltage_table = VDAC_VSEL_table,
158 .enable_time_us = 100,
159 },
160 {
161 .name = "vaux1",
162 .min_uV = 1800000,
163 .max_uV = 2850000,
164 .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
165 .voltage_table = VAUX1_VSEL_table,
166 .enable_time_us = 100,
167 },
168 {
169 .name = "vaux2",
170 .min_uV = 1800000,
171 .max_uV = 3300000,
172 .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
173 .voltage_table = VAUX2_VSEL_table,
174 .enable_time_us = 100,
175 },
176 {
177 .name = "vaux33",
178 .min_uV = 1800000,
179 .max_uV = 3300000,
180 .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
181 .voltage_table = VAUX33_VSEL_table,
182 .enable_time_us = 100,
183 },
184 {
185 .name = "vmmc",
186 .min_uV = 1800000,
187 .max_uV = 3300000,
188 .n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
189 .voltage_table = VMMC_VSEL_table,
190 .enable_time_us = 100,
191 },
192 };
193
194 static struct tps_info tps65911_regs[] = {
195 {
196 .name = "vrtc",
197 .enable_time_us = 2200,
198 },
199 {
200 .name = "vio",
201 .min_uV = 1500000,
202 .max_uV = 3300000,
203 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
204 .voltage_table = VIO_VSEL_table,
205 .enable_time_us = 350,
206 },
207 {
208 .name = "vdd1",
209 .min_uV = 600000,
210 .max_uV = 4500000,
211 .n_voltages = 73,
212 .enable_time_us = 350,
213 },
214 {
215 .name = "vdd2",
216 .min_uV = 600000,
217 .max_uV = 4500000,
218 .n_voltages = 73,
219 .enable_time_us = 350,
220 },
221 {
222 .name = "vddctrl",
223 .min_uV = 600000,
224 .max_uV = 1400000,
225 .n_voltages = 65,
226 .enable_time_us = 900,
227 },
228 {
229 .name = "ldo1",
230 .min_uV = 1000000,
231 .max_uV = 3300000,
232 .n_voltages = 47,
233 .enable_time_us = 420,
234 },
235 {
236 .name = "ldo2",
237 .min_uV = 1000000,
238 .max_uV = 3300000,
239 .n_voltages = 47,
240 .enable_time_us = 420,
241 },
242 {
243 .name = "ldo3",
244 .min_uV = 1000000,
245 .max_uV = 3300000,
246 .n_voltages = 24,
247 .enable_time_us = 230,
248 },
249 {
250 .name = "ldo4",
251 .min_uV = 1000000,
252 .max_uV = 3300000,
253 .n_voltages = 47,
254 .enable_time_us = 230,
255 },
256 {
257 .name = "ldo5",
258 .min_uV = 1000000,
259 .max_uV = 3300000,
260 .n_voltages = 24,
261 .enable_time_us = 230,
262 },
263 {
264 .name = "ldo6",
265 .min_uV = 1000000,
266 .max_uV = 3300000,
267 .n_voltages = 24,
268 .enable_time_us = 230,
269 },
270 {
271 .name = "ldo7",
272 .min_uV = 1000000,
273 .max_uV = 3300000,
274 .n_voltages = 24,
275 .enable_time_us = 230,
276 },
277 {
278 .name = "ldo8",
279 .min_uV = 1000000,
280 .max_uV = 3300000,
281 .n_voltages = 24,
282 .enable_time_us = 230,
283 },
284 };
285
286 #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
287 static unsigned int tps65910_ext_sleep_control[] = {
288 0,
289 EXT_CONTROL_REG_BITS(VIO, 1, 0),
290 EXT_CONTROL_REG_BITS(VDD1, 1, 1),
291 EXT_CONTROL_REG_BITS(VDD2, 1, 2),
292 EXT_CONTROL_REG_BITS(VDD3, 1, 3),
293 EXT_CONTROL_REG_BITS(VDIG1, 0, 1),
294 EXT_CONTROL_REG_BITS(VDIG2, 0, 2),
295 EXT_CONTROL_REG_BITS(VPLL, 0, 6),
296 EXT_CONTROL_REG_BITS(VDAC, 0, 7),
297 EXT_CONTROL_REG_BITS(VAUX1, 0, 3),
298 EXT_CONTROL_REG_BITS(VAUX2, 0, 4),
299 EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
300 EXT_CONTROL_REG_BITS(VMMC, 0, 0),
301 };
302
303 static unsigned int tps65911_ext_sleep_control[] = {
304 0,
305 EXT_CONTROL_REG_BITS(VIO, 1, 0),
306 EXT_CONTROL_REG_BITS(VDD1, 1, 1),
307 EXT_CONTROL_REG_BITS(VDD2, 1, 2),
308 EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
309 EXT_CONTROL_REG_BITS(LDO1, 0, 1),
310 EXT_CONTROL_REG_BITS(LDO2, 0, 2),
311 EXT_CONTROL_REG_BITS(LDO3, 0, 7),
312 EXT_CONTROL_REG_BITS(LDO4, 0, 6),
313 EXT_CONTROL_REG_BITS(LDO5, 0, 3),
314 EXT_CONTROL_REG_BITS(LDO6, 0, 0),
315 EXT_CONTROL_REG_BITS(LDO7, 0, 5),
316 EXT_CONTROL_REG_BITS(LDO8, 0, 4),
317 };
318
319 struct tps65910_reg {
320 struct regulator_desc *desc;
321 struct tps65910 *mfd;
322 struct regulator_dev **rdev;
323 struct tps_info **info;
324 struct mutex mutex;
325 int num_regulators;
326 int mode;
327 int (*get_ctrl_reg)(int);
328 unsigned int *ext_sleep_control;
329 unsigned int board_ext_control[TPS65910_NUM_REGS];
330 };
331
332 static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg)
333 {
334 u8 val;
335 int err;
336
337 err = pmic->mfd->read(pmic->mfd, reg, 1, &val);
338 if (err)
339 return err;
340
341 return val;
342 }
343
344 static inline int tps65910_write(struct tps65910_reg *pmic, u8 reg, u8 val)
345 {
346 return pmic->mfd->write(pmic->mfd, reg, 1, &val);
347 }
348
349 static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg,
350 u8 set_mask, u8 clear_mask)
351 {
352 int err, data;
353
354 mutex_lock(&pmic->mutex);
355
356 data = tps65910_read(pmic, reg);
357 if (data < 0) {
358 dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
359 err = data;
360 goto out;
361 }
362
363 data &= ~clear_mask;
364 data |= set_mask;
365 err = tps65910_write(pmic, reg, data);
366 if (err)
367 dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
368
369 out:
370 mutex_unlock(&pmic->mutex);
371 return err;
372 }
373
374 static int tps65910_reg_read(struct tps65910_reg *pmic, u8 reg)
375 {
376 int data;
377
378 mutex_lock(&pmic->mutex);
379
380 data = tps65910_read(pmic, reg);
381 if (data < 0)
382 dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
383
384 mutex_unlock(&pmic->mutex);
385 return data;
386 }
387
388 static int tps65910_reg_write(struct tps65910_reg *pmic, u8 reg, u8 val)
389 {
390 int err;
391
392 mutex_lock(&pmic->mutex);
393
394 err = tps65910_write(pmic, reg, val);
395 if (err < 0)
396 dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
397
398 mutex_unlock(&pmic->mutex);
399 return err;
400 }
401
402 static int tps65910_get_ctrl_register(int id)
403 {
404 switch (id) {
405 case TPS65910_REG_VRTC:
406 return TPS65910_VRTC;
407 case TPS65910_REG_VIO:
408 return TPS65910_VIO;
409 case TPS65910_REG_VDD1:
410 return TPS65910_VDD1;
411 case TPS65910_REG_VDD2:
412 return TPS65910_VDD2;
413 case TPS65910_REG_VDD3:
414 return TPS65910_VDD3;
415 case TPS65910_REG_VDIG1:
416 return TPS65910_VDIG1;
417 case TPS65910_REG_VDIG2:
418 return TPS65910_VDIG2;
419 case TPS65910_REG_VPLL:
420 return TPS65910_VPLL;
421 case TPS65910_REG_VDAC:
422 return TPS65910_VDAC;
423 case TPS65910_REG_VAUX1:
424 return TPS65910_VAUX1;
425 case TPS65910_REG_VAUX2:
426 return TPS65910_VAUX2;
427 case TPS65910_REG_VAUX33:
428 return TPS65910_VAUX33;
429 case TPS65910_REG_VMMC:
430 return TPS65910_VMMC;
431 default:
432 return -EINVAL;
433 }
434 }
435
436 static int tps65911_get_ctrl_register(int id)
437 {
438 switch (id) {
439 case TPS65910_REG_VRTC:
440 return TPS65910_VRTC;
441 case TPS65910_REG_VIO:
442 return TPS65910_VIO;
443 case TPS65910_REG_VDD1:
444 return TPS65910_VDD1;
445 case TPS65910_REG_VDD2:
446 return TPS65910_VDD2;
447 case TPS65911_REG_VDDCTRL:
448 return TPS65911_VDDCTRL;
449 case TPS65911_REG_LDO1:
450 return TPS65911_LDO1;
451 case TPS65911_REG_LDO2:
452 return TPS65911_LDO2;
453 case TPS65911_REG_LDO3:
454 return TPS65911_LDO3;
455 case TPS65911_REG_LDO4:
456 return TPS65911_LDO4;
457 case TPS65911_REG_LDO5:
458 return TPS65911_LDO5;
459 case TPS65911_REG_LDO6:
460 return TPS65911_LDO6;
461 case TPS65911_REG_LDO7:
462 return TPS65911_LDO7;
463 case TPS65911_REG_LDO8:
464 return TPS65911_LDO8;
465 default:
466 return -EINVAL;
467 }
468 }
469
470 static int tps65910_enable_time(struct regulator_dev *dev)
471 {
472 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
473 int id = rdev_get_id(dev);
474 return pmic->info[id]->enable_time_us;
475 }
476
477 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
478 {
479 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
480 struct tps65910 *mfd = pmic->mfd;
481 int reg, value, id = rdev_get_id(dev);
482
483 reg = pmic->get_ctrl_reg(id);
484 if (reg < 0)
485 return reg;
486
487 switch (mode) {
488 case REGULATOR_MODE_NORMAL:
489 return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT,
490 LDO_ST_MODE_BIT);
491 case REGULATOR_MODE_IDLE:
492 value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
493 return tps65910_set_bits(mfd, reg, value);
494 case REGULATOR_MODE_STANDBY:
495 return tps65910_clear_bits(mfd, reg, LDO_ST_ON_BIT);
496 }
497
498 return -EINVAL;
499 }
500
501 static unsigned int tps65910_get_mode(struct regulator_dev *dev)
502 {
503 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
504 int reg, value, id = rdev_get_id(dev);
505
506 reg = pmic->get_ctrl_reg(id);
507 if (reg < 0)
508 return reg;
509
510 value = tps65910_reg_read(pmic, reg);
511 if (value < 0)
512 return value;
513
514 if (!(value & LDO_ST_ON_BIT))
515 return REGULATOR_MODE_STANDBY;
516 else if (value & LDO_ST_MODE_BIT)
517 return REGULATOR_MODE_IDLE;
518 else
519 return REGULATOR_MODE_NORMAL;
520 }
521
522 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
523 {
524 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
525 int id = rdev_get_id(dev);
526 int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
527
528 switch (id) {
529 case TPS65910_REG_VDD1:
530 opvsel = tps65910_reg_read(pmic, TPS65910_VDD1_OP);
531 mult = tps65910_reg_read(pmic, TPS65910_VDD1);
532 mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
533 srvsel = tps65910_reg_read(pmic, TPS65910_VDD1_SR);
534 sr = opvsel & VDD1_OP_CMD_MASK;
535 opvsel &= VDD1_OP_SEL_MASK;
536 srvsel &= VDD1_SR_SEL_MASK;
537 vselmax = 75;
538 break;
539 case TPS65910_REG_VDD2:
540 opvsel = tps65910_reg_read(pmic, TPS65910_VDD2_OP);
541 mult = tps65910_reg_read(pmic, TPS65910_VDD2);
542 mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
543 srvsel = tps65910_reg_read(pmic, TPS65910_VDD2_SR);
544 sr = opvsel & VDD2_OP_CMD_MASK;
545 opvsel &= VDD2_OP_SEL_MASK;
546 srvsel &= VDD2_SR_SEL_MASK;
547 vselmax = 75;
548 break;
549 case TPS65911_REG_VDDCTRL:
550 opvsel = tps65910_reg_read(pmic, TPS65911_VDDCTRL_OP);
551 srvsel = tps65910_reg_read(pmic, TPS65911_VDDCTRL_SR);
552 sr = opvsel & VDDCTRL_OP_CMD_MASK;
553 opvsel &= VDDCTRL_OP_SEL_MASK;
554 srvsel &= VDDCTRL_SR_SEL_MASK;
555 vselmax = 64;
556 break;
557 }
558
559 /* multiplier 0 == 1 but 2,3 normal */
560 if (!mult)
561 mult=1;
562
563 if (sr) {
564 /* normalise to valid range */
565 if (srvsel < 3)
566 srvsel = 3;
567 if (srvsel > vselmax)
568 srvsel = vselmax;
569 return srvsel - 3;
570 } else {
571
572 /* normalise to valid range*/
573 if (opvsel < 3)
574 opvsel = 3;
575 if (opvsel > vselmax)
576 opvsel = vselmax;
577 return opvsel - 3;
578 }
579 return -EINVAL;
580 }
581
582 static int tps65910_get_voltage_sel(struct regulator_dev *dev)
583 {
584 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
585 int reg, value, id = rdev_get_id(dev);
586
587 reg = pmic->get_ctrl_reg(id);
588 if (reg < 0)
589 return reg;
590
591 value = tps65910_reg_read(pmic, reg);
592 if (value < 0)
593 return value;
594
595 switch (id) {
596 case TPS65910_REG_VIO:
597 case TPS65910_REG_VDIG1:
598 case TPS65910_REG_VDIG2:
599 case TPS65910_REG_VPLL:
600 case TPS65910_REG_VDAC:
601 case TPS65910_REG_VAUX1:
602 case TPS65910_REG_VAUX2:
603 case TPS65910_REG_VAUX33:
604 case TPS65910_REG_VMMC:
605 value &= LDO_SEL_MASK;
606 value >>= LDO_SEL_SHIFT;
607 break;
608 default:
609 return -EINVAL;
610 }
611
612 return value;
613 }
614
615 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
616 {
617 return 5 * 1000 * 1000;
618 }
619
620 static int tps65911_get_voltage_sel(struct regulator_dev *dev)
621 {
622 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
623 int id = rdev_get_id(dev);
624 u8 value, reg;
625
626 reg = pmic->get_ctrl_reg(id);
627
628 value = tps65910_reg_read(pmic, reg);
629
630 switch (id) {
631 case TPS65911_REG_LDO1:
632 case TPS65911_REG_LDO2:
633 case TPS65911_REG_LDO4:
634 value &= LDO1_SEL_MASK;
635 value >>= LDO_SEL_SHIFT;
636 break;
637 case TPS65911_REG_LDO3:
638 case TPS65911_REG_LDO5:
639 case TPS65911_REG_LDO6:
640 case TPS65911_REG_LDO7:
641 case TPS65911_REG_LDO8:
642 value &= LDO3_SEL_MASK;
643 value >>= LDO_SEL_SHIFT;
644 break;
645 case TPS65910_REG_VIO:
646 value &= LDO_SEL_MASK;
647 value >>= LDO_SEL_SHIFT;
648 break;
649 default:
650 return -EINVAL;
651 }
652
653 return value;
654 }
655
656 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
657 unsigned selector)
658 {
659 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
660 int id = rdev_get_id(dev), vsel;
661 int dcdc_mult = 0;
662
663 switch (id) {
664 case TPS65910_REG_VDD1:
665 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
666 if (dcdc_mult == 1)
667 dcdc_mult--;
668 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
669
670 tps65910_modify_bits(pmic, TPS65910_VDD1,
671 (dcdc_mult << VDD1_VGAIN_SEL_SHIFT),
672 VDD1_VGAIN_SEL_MASK);
673 tps65910_reg_write(pmic, TPS65910_VDD1_OP, vsel);
674 break;
675 case TPS65910_REG_VDD2:
676 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
677 if (dcdc_mult == 1)
678 dcdc_mult--;
679 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
680
681 tps65910_modify_bits(pmic, TPS65910_VDD2,
682 (dcdc_mult << VDD2_VGAIN_SEL_SHIFT),
683 VDD1_VGAIN_SEL_MASK);
684 tps65910_reg_write(pmic, TPS65910_VDD2_OP, vsel);
685 break;
686 case TPS65911_REG_VDDCTRL:
687 vsel = selector + 3;
688 tps65910_reg_write(pmic, TPS65911_VDDCTRL_OP, vsel);
689 }
690
691 return 0;
692 }
693
694 static int tps65910_set_voltage_sel(struct regulator_dev *dev,
695 unsigned selector)
696 {
697 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
698 int reg, id = rdev_get_id(dev);
699
700 reg = pmic->get_ctrl_reg(id);
701 if (reg < 0)
702 return reg;
703
704 switch (id) {
705 case TPS65910_REG_VIO:
706 case TPS65910_REG_VDIG1:
707 case TPS65910_REG_VDIG2:
708 case TPS65910_REG_VPLL:
709 case TPS65910_REG_VDAC:
710 case TPS65910_REG_VAUX1:
711 case TPS65910_REG_VAUX2:
712 case TPS65910_REG_VAUX33:
713 case TPS65910_REG_VMMC:
714 return tps65910_modify_bits(pmic, reg,
715 (selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
716 }
717
718 return -EINVAL;
719 }
720
721 static int tps65911_set_voltage_sel(struct regulator_dev *dev,
722 unsigned selector)
723 {
724 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
725 int reg, id = rdev_get_id(dev);
726
727 reg = pmic->get_ctrl_reg(id);
728 if (reg < 0)
729 return reg;
730
731 switch (id) {
732 case TPS65911_REG_LDO1:
733 case TPS65911_REG_LDO2:
734 case TPS65911_REG_LDO4:
735 return tps65910_modify_bits(pmic, reg,
736 (selector << LDO_SEL_SHIFT), LDO1_SEL_MASK);
737 case TPS65911_REG_LDO3:
738 case TPS65911_REG_LDO5:
739 case TPS65911_REG_LDO6:
740 case TPS65911_REG_LDO7:
741 case TPS65911_REG_LDO8:
742 return tps65910_modify_bits(pmic, reg,
743 (selector << LDO_SEL_SHIFT), LDO3_SEL_MASK);
744 case TPS65910_REG_VIO:
745 return tps65910_modify_bits(pmic, reg,
746 (selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
747 }
748
749 return -EINVAL;
750 }
751
752
753 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
754 unsigned selector)
755 {
756 int volt, mult = 1, id = rdev_get_id(dev);
757
758 switch (id) {
759 case TPS65910_REG_VDD1:
760 case TPS65910_REG_VDD2:
761 mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
762 volt = VDD1_2_MIN_VOLT +
763 (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
764 break;
765 case TPS65911_REG_VDDCTRL:
766 volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
767 break;
768 default:
769 BUG();
770 return -EINVAL;
771 }
772
773 return volt * 100 * mult;
774 }
775
776 static int tps65910_list_voltage(struct regulator_dev *dev,
777 unsigned selector)
778 {
779 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
780 int id = rdev_get_id(dev), voltage;
781
782 if (id < TPS65910_REG_VIO || id > TPS65910_REG_VMMC)
783 return -EINVAL;
784
785 if (selector >= pmic->info[id]->n_voltages)
786 return -EINVAL;
787 else
788 voltage = pmic->info[id]->voltage_table[selector] * 1000;
789
790 return voltage;
791 }
792
793 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
794 {
795 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
796 int step_mv = 0, id = rdev_get_id(dev);
797
798 switch(id) {
799 case TPS65911_REG_LDO1:
800 case TPS65911_REG_LDO2:
801 case TPS65911_REG_LDO4:
802 /* The first 5 values of the selector correspond to 1V */
803 if (selector < 5)
804 selector = 0;
805 else
806 selector -= 4;
807
808 step_mv = 50;
809 break;
810 case TPS65911_REG_LDO3:
811 case TPS65911_REG_LDO5:
812 case TPS65911_REG_LDO6:
813 case TPS65911_REG_LDO7:
814 case TPS65911_REG_LDO8:
815 /* The first 3 values of the selector correspond to 1V */
816 if (selector < 3)
817 selector = 0;
818 else
819 selector -= 2;
820
821 step_mv = 100;
822 break;
823 case TPS65910_REG_VIO:
824 return pmic->info[id]->voltage_table[selector] * 1000;
825 default:
826 return -EINVAL;
827 }
828
829 return (LDO_MIN_VOLT + selector * step_mv) * 1000;
830 }
831
832 static int tps65910_set_voltage_dcdc_time_sel(struct regulator_dev *dev,
833 unsigned int old_selector, unsigned int new_selector)
834 {
835 int id = rdev_get_id(dev);
836 int old_volt, new_volt;
837
838 old_volt = tps65910_list_voltage_dcdc(dev, old_selector);
839 if (old_volt < 0)
840 return old_volt;
841
842 new_volt = tps65910_list_voltage_dcdc(dev, new_selector);
843 if (new_volt < 0)
844 return new_volt;
845
846 /* VDD1 and VDD2 are 12.5mV/us, VDDCTRL is 100mV/20us */
847 switch (id) {
848 case TPS65910_REG_VDD1:
849 case TPS65910_REG_VDD2:
850 return DIV_ROUND_UP(abs(old_volt - new_volt), 12500);
851 case TPS65911_REG_VDDCTRL:
852 return DIV_ROUND_UP(abs(old_volt - new_volt), 5000);
853 }
854 return -EINVAL;
855 }
856
857 /* Regulator ops (except VRTC) */
858 static struct regulator_ops tps65910_ops_dcdc = {
859 .is_enabled = regulator_is_enabled_regmap,
860 .enable = regulator_enable_regmap,
861 .disable = regulator_disable_regmap,
862 .enable_time = tps65910_enable_time,
863 .set_mode = tps65910_set_mode,
864 .get_mode = tps65910_get_mode,
865 .get_voltage_sel = tps65910_get_voltage_dcdc_sel,
866 .set_voltage_sel = tps65910_set_voltage_dcdc_sel,
867 .set_voltage_time_sel = tps65910_set_voltage_dcdc_time_sel,
868 .list_voltage = tps65910_list_voltage_dcdc,
869 };
870
871 static struct regulator_ops tps65910_ops_vdd3 = {
872 .is_enabled = regulator_is_enabled_regmap,
873 .enable = regulator_enable_regmap,
874 .disable = regulator_disable_regmap,
875 .enable_time = tps65910_enable_time,
876 .set_mode = tps65910_set_mode,
877 .get_mode = tps65910_get_mode,
878 .get_voltage = tps65910_get_voltage_vdd3,
879 .list_voltage = tps65910_list_voltage,
880 };
881
882 static struct regulator_ops tps65910_ops = {
883 .is_enabled = regulator_is_enabled_regmap,
884 .enable = regulator_enable_regmap,
885 .disable = regulator_disable_regmap,
886 .enable_time = tps65910_enable_time,
887 .set_mode = tps65910_set_mode,
888 .get_mode = tps65910_get_mode,
889 .get_voltage_sel = tps65910_get_voltage_sel,
890 .set_voltage_sel = tps65910_set_voltage_sel,
891 .list_voltage = tps65910_list_voltage,
892 };
893
894 static struct regulator_ops tps65911_ops = {
895 .is_enabled = regulator_is_enabled_regmap,
896 .enable = regulator_enable_regmap,
897 .disable = regulator_disable_regmap,
898 .enable_time = tps65910_enable_time,
899 .set_mode = tps65910_set_mode,
900 .get_mode = tps65910_get_mode,
901 .get_voltage_sel = tps65911_get_voltage_sel,
902 .set_voltage_sel = tps65911_set_voltage_sel,
903 .list_voltage = tps65911_list_voltage,
904 };
905
906 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
907 int id, int ext_sleep_config)
908 {
909 struct tps65910 *mfd = pmic->mfd;
910 u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
911 u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
912 int ret;
913
914 /*
915 * Regulator can not be control from multiple external input EN1, EN2
916 * and EN3 together.
917 */
918 if (ext_sleep_config & EXT_SLEEP_CONTROL) {
919 int en_count;
920 en_count = ((ext_sleep_config &
921 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
922 en_count += ((ext_sleep_config &
923 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
924 en_count += ((ext_sleep_config &
925 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
926 en_count += ((ext_sleep_config &
927 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
928 if (en_count > 1) {
929 dev_err(mfd->dev,
930 "External sleep control flag is not proper\n");
931 return -EINVAL;
932 }
933 }
934
935 pmic->board_ext_control[id] = ext_sleep_config;
936
937 /* External EN1 control */
938 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
939 ret = tps65910_set_bits(mfd,
940 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
941 else
942 ret = tps65910_clear_bits(mfd,
943 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
944 if (ret < 0) {
945 dev_err(mfd->dev,
946 "Error in configuring external control EN1\n");
947 return ret;
948 }
949
950 /* External EN2 control */
951 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
952 ret = tps65910_set_bits(mfd,
953 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
954 else
955 ret = tps65910_clear_bits(mfd,
956 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
957 if (ret < 0) {
958 dev_err(mfd->dev,
959 "Error in configuring external control EN2\n");
960 return ret;
961 }
962
963 /* External EN3 control for TPS65910 LDO only */
964 if ((tps65910_chip_id(mfd) == TPS65910) &&
965 (id >= TPS65910_REG_VDIG1)) {
966 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
967 ret = tps65910_set_bits(mfd,
968 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
969 else
970 ret = tps65910_clear_bits(mfd,
971 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
972 if (ret < 0) {
973 dev_err(mfd->dev,
974 "Error in configuring external control EN3\n");
975 return ret;
976 }
977 }
978
979 /* Return if no external control is selected */
980 if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
981 /* Clear all sleep controls */
982 ret = tps65910_clear_bits(mfd,
983 TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
984 if (!ret)
985 ret = tps65910_clear_bits(mfd,
986 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
987 if (ret < 0)
988 dev_err(mfd->dev,
989 "Error in configuring SLEEP register\n");
990 return ret;
991 }
992
993 /*
994 * For regulator that has separate operational and sleep register make
995 * sure that operational is used and clear sleep register to turn
996 * regulator off when external control is inactive
997 */
998 if ((id == TPS65910_REG_VDD1) ||
999 (id == TPS65910_REG_VDD2) ||
1000 ((id == TPS65911_REG_VDDCTRL) &&
1001 (tps65910_chip_id(mfd) == TPS65911))) {
1002 int op_reg_add = pmic->get_ctrl_reg(id) + 1;
1003 int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
1004 int opvsel = tps65910_reg_read(pmic, op_reg_add);
1005 int srvsel = tps65910_reg_read(pmic, sr_reg_add);
1006 if (opvsel & VDD1_OP_CMD_MASK) {
1007 u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
1008 ret = tps65910_reg_write(pmic, op_reg_add, reg_val);
1009 if (ret < 0) {
1010 dev_err(mfd->dev,
1011 "Error in configuring op register\n");
1012 return ret;
1013 }
1014 }
1015 ret = tps65910_reg_write(pmic, sr_reg_add, 0);
1016 if (ret < 0) {
1017 dev_err(mfd->dev, "Error in settting sr register\n");
1018 return ret;
1019 }
1020 }
1021
1022 ret = tps65910_clear_bits(mfd,
1023 TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
1024 if (!ret) {
1025 if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
1026 ret = tps65910_set_bits(mfd,
1027 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
1028 else
1029 ret = tps65910_clear_bits(mfd,
1030 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
1031 }
1032 if (ret < 0)
1033 dev_err(mfd->dev,
1034 "Error in configuring SLEEP register\n");
1035
1036 return ret;
1037 }
1038
1039 #ifdef CONFIG_OF
1040
1041 static struct of_regulator_match tps65910_matches[] = {
1042 { .name = "vrtc", .driver_data = (void *) &tps65910_regs[0] },
1043 { .name = "vio", .driver_data = (void *) &tps65910_regs[1] },
1044 { .name = "vdd1", .driver_data = (void *) &tps65910_regs[2] },
1045 { .name = "vdd2", .driver_data = (void *) &tps65910_regs[3] },
1046 { .name = "vdd3", .driver_data = (void *) &tps65910_regs[4] },
1047 { .name = "vdig1", .driver_data = (void *) &tps65910_regs[5] },
1048 { .name = "vdig2", .driver_data = (void *) &tps65910_regs[6] },
1049 { .name = "vpll", .driver_data = (void *) &tps65910_regs[7] },
1050 { .name = "vdac", .driver_data = (void *) &tps65910_regs[8] },
1051 { .name = "vaux1", .driver_data = (void *) &tps65910_regs[9] },
1052 { .name = "vaux2", .driver_data = (void *) &tps65910_regs[10] },
1053 { .name = "vaux33", .driver_data = (void *) &tps65910_regs[11] },
1054 { .name = "vmmc", .driver_data = (void *) &tps65910_regs[12] },
1055 };
1056
1057 static struct of_regulator_match tps65911_matches[] = {
1058 { .name = "vrtc", .driver_data = (void *) &tps65911_regs[0] },
1059 { .name = "vio", .driver_data = (void *) &tps65911_regs[1] },
1060 { .name = "vdd1", .driver_data = (void *) &tps65911_regs[2] },
1061 { .name = "vdd2", .driver_data = (void *) &tps65911_regs[3] },
1062 { .name = "vddctrl", .driver_data = (void *) &tps65911_regs[4] },
1063 { .name = "ldo1", .driver_data = (void *) &tps65911_regs[5] },
1064 { .name = "ldo2", .driver_data = (void *) &tps65911_regs[6] },
1065 { .name = "ldo3", .driver_data = (void *) &tps65911_regs[7] },
1066 { .name = "ldo4", .driver_data = (void *) &tps65911_regs[8] },
1067 { .name = "ldo5", .driver_data = (void *) &tps65911_regs[9] },
1068 { .name = "ldo6", .driver_data = (void *) &tps65911_regs[10] },
1069 { .name = "ldo7", .driver_data = (void *) &tps65911_regs[11] },
1070 { .name = "ldo8", .driver_data = (void *) &tps65911_regs[12] },
1071 };
1072
1073 static struct tps65910_board *tps65910_parse_dt_reg_data(
1074 struct platform_device *pdev)
1075 {
1076 struct tps65910_board *pmic_plat_data;
1077 struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1078 struct device_node *np = pdev->dev.parent->of_node;
1079 struct device_node *regulators;
1080 struct of_regulator_match *matches;
1081 unsigned int prop;
1082 int idx = 0, ret, count;
1083
1084 pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
1085 GFP_KERNEL);
1086
1087 if (!pmic_plat_data) {
1088 dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
1089 return NULL;
1090 }
1091
1092 regulators = of_find_node_by_name(np, "regulators");
1093
1094 switch (tps65910_chip_id(tps65910)) {
1095 case TPS65910:
1096 count = ARRAY_SIZE(tps65910_matches);
1097 matches = tps65910_matches;
1098 break;
1099 case TPS65911:
1100 count = ARRAY_SIZE(tps65911_matches);
1101 matches = tps65911_matches;
1102 break;
1103 default:
1104 pr_err("Invalid tps chip version\n");
1105 return NULL;
1106 }
1107
1108 ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
1109 if (ret < 0) {
1110 dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
1111 ret);
1112 return NULL;
1113 }
1114
1115 for (idx = 0; idx < count; idx++) {
1116 if (!matches[idx].init_data || !matches[idx].of_node)
1117 continue;
1118
1119 pmic_plat_data->tps65910_pmic_init_data[idx] =
1120 matches[idx].init_data;
1121
1122 ret = of_property_read_u32(matches[idx].of_node,
1123 "ti,regulator-ext-sleep-control", &prop);
1124 if (!ret)
1125 pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
1126 }
1127
1128 return pmic_plat_data;
1129 }
1130 #else
1131 static inline struct tps65910_board *tps65910_parse_dt_reg_data(
1132 struct platform_device *pdev)
1133 {
1134 return 0;
1135 }
1136 #endif
1137
1138 static __devinit int tps65910_probe(struct platform_device *pdev)
1139 {
1140 struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1141 struct regulator_config config = { };
1142 struct tps_info *info;
1143 struct regulator_init_data *reg_data;
1144 struct regulator_dev *rdev;
1145 struct tps65910_reg *pmic;
1146 struct tps65910_board *pmic_plat_data;
1147 int i, err;
1148
1149 pmic_plat_data = dev_get_platdata(tps65910->dev);
1150 if (!pmic_plat_data && tps65910->dev->of_node)
1151 pmic_plat_data = tps65910_parse_dt_reg_data(pdev);
1152
1153 if (!pmic_plat_data)
1154 return -EINVAL;
1155
1156 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1157 if (!pmic)
1158 return -ENOMEM;
1159
1160 mutex_init(&pmic->mutex);
1161 pmic->mfd = tps65910;
1162 platform_set_drvdata(pdev, pmic);
1163
1164 /* Give control of all register to control port */
1165 tps65910_set_bits(pmic->mfd, TPS65910_DEVCTRL,
1166 DEVCTRL_SR_CTL_I2C_SEL_MASK);
1167
1168 switch(tps65910_chip_id(tps65910)) {
1169 case TPS65910:
1170 pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
1171 pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
1172 pmic->ext_sleep_control = tps65910_ext_sleep_control;
1173 info = tps65910_regs;
1174 break;
1175 case TPS65911:
1176 pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
1177 pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
1178 pmic->ext_sleep_control = tps65911_ext_sleep_control;
1179 info = tps65911_regs;
1180 break;
1181 default:
1182 pr_err("Invalid tps chip version\n");
1183 return -ENODEV;
1184 }
1185
1186 pmic->desc = kcalloc(pmic->num_regulators,
1187 sizeof(struct regulator_desc), GFP_KERNEL);
1188 if (!pmic->desc) {
1189 err = -ENOMEM;
1190 goto err_out;
1191 }
1192
1193 pmic->info = kcalloc(pmic->num_regulators,
1194 sizeof(struct tps_info *), GFP_KERNEL);
1195 if (!pmic->info) {
1196 err = -ENOMEM;
1197 goto err_free_desc;
1198 }
1199
1200 pmic->rdev = kcalloc(pmic->num_regulators,
1201 sizeof(struct regulator_dev *), GFP_KERNEL);
1202 if (!pmic->rdev) {
1203 err = -ENOMEM;
1204 goto err_free_info;
1205 }
1206
1207 for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS;
1208 i++, info++) {
1209
1210 reg_data = pmic_plat_data->tps65910_pmic_init_data[i];
1211
1212 /* Regulator API handles empty constraints but not NULL
1213 * constraints */
1214 if (!reg_data)
1215 continue;
1216
1217 /* Register the regulators */
1218 pmic->info[i] = info;
1219
1220 pmic->desc[i].name = info->name;
1221 pmic->desc[i].id = i;
1222 pmic->desc[i].n_voltages = info->n_voltages;
1223
1224 if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
1225 pmic->desc[i].ops = &tps65910_ops_dcdc;
1226 pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
1227 VDD1_2_NUM_VOLT_COARSE;
1228 } else if (i == TPS65910_REG_VDD3) {
1229 if (tps65910_chip_id(tps65910) == TPS65910)
1230 pmic->desc[i].ops = &tps65910_ops_vdd3;
1231 else
1232 pmic->desc[i].ops = &tps65910_ops_dcdc;
1233 } else {
1234 if (tps65910_chip_id(tps65910) == TPS65910)
1235 pmic->desc[i].ops = &tps65910_ops;
1236 else
1237 pmic->desc[i].ops = &tps65911_ops;
1238 }
1239
1240 err = tps65910_set_ext_sleep_config(pmic, i,
1241 pmic_plat_data->regulator_ext_sleep_control[i]);
1242 /*
1243 * Failing on regulator for configuring externally control
1244 * is not a serious issue, just throw warning.
1245 */
1246 if (err < 0)
1247 dev_warn(tps65910->dev,
1248 "Failed to initialise ext control config\n");
1249
1250 pmic->desc[i].type = REGULATOR_VOLTAGE;
1251 pmic->desc[i].owner = THIS_MODULE;
1252 pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
1253 pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
1254
1255 config.dev = tps65910->dev;
1256 config.init_data = reg_data;
1257 config.driver_data = pmic;
1258 config.regmap = tps65910->regmap;
1259
1260 #ifdef CONFIG_OF
1261 config.of_node = of_find_node_by_name(tps65910->dev->of_node,
1262 info->name);
1263 #endif
1264
1265 rdev = regulator_register(&pmic->desc[i], &config);
1266 if (IS_ERR(rdev)) {
1267 dev_err(tps65910->dev,
1268 "failed to register %s regulator\n",
1269 pdev->name);
1270 err = PTR_ERR(rdev);
1271 goto err_unregister_regulator;
1272 }
1273
1274 /* Save regulator for cleanup */
1275 pmic->rdev[i] = rdev;
1276 }
1277 return 0;
1278
1279 err_unregister_regulator:
1280 while (--i >= 0)
1281 regulator_unregister(pmic->rdev[i]);
1282 kfree(pmic->rdev);
1283 err_free_info:
1284 kfree(pmic->info);
1285 err_free_desc:
1286 kfree(pmic->desc);
1287 err_out:
1288 return err;
1289 }
1290
1291 static int __devexit tps65910_remove(struct platform_device *pdev)
1292 {
1293 struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1294 int i;
1295
1296 for (i = 0; i < pmic->num_regulators; i++)
1297 regulator_unregister(pmic->rdev[i]);
1298
1299 kfree(pmic->rdev);
1300 kfree(pmic->info);
1301 kfree(pmic->desc);
1302 return 0;
1303 }
1304
1305 static void tps65910_shutdown(struct platform_device *pdev)
1306 {
1307 struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1308 int i;
1309
1310 /*
1311 * Before bootloader jumps to kernel, it makes sure that required
1312 * external control signals are in desired state so that given rails
1313 * can be configure accordingly.
1314 * If rails are configured to be controlled from external control
1315 * then before shutting down/rebooting the system, the external
1316 * control configuration need to be remove from the rails so that
1317 * its output will be available as per register programming even
1318 * if external controls are removed. This is require when the POR
1319 * value of the control signals are not in active state and before
1320 * bootloader initializes it, the system requires the rail output
1321 * to be active for booting.
1322 */
1323 for (i = 0; i < pmic->num_regulators; i++) {
1324 int err;
1325 if (!pmic->rdev[i])
1326 continue;
1327
1328 err = tps65910_set_ext_sleep_config(pmic, i, 0);
1329 if (err < 0)
1330 dev_err(&pdev->dev,
1331 "Error in clearing external control\n");
1332 }
1333 }
1334
1335 static struct platform_driver tps65910_driver = {
1336 .driver = {
1337 .name = "tps65910-pmic",
1338 .owner = THIS_MODULE,
1339 },
1340 .probe = tps65910_probe,
1341 .remove = __devexit_p(tps65910_remove),
1342 .shutdown = tps65910_shutdown,
1343 };
1344
1345 static int __init tps65910_init(void)
1346 {
1347 return platform_driver_register(&tps65910_driver);
1348 }
1349 subsys_initcall(tps65910_init);
1350
1351 static void __exit tps65910_cleanup(void)
1352 {
1353 platform_driver_unregister(&tps65910_driver);
1354 }
1355 module_exit(tps65910_cleanup);
1356
1357 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1358 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
1359 MODULE_LICENSE("GPL v2");
1360 MODULE_ALIAS("platform:tps65910-pmic");
Linux kernel - Deliverables
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