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[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
27 #define TPS65910_SUPPLY_STATE_ENABLED 0x1
28 #define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 | \
29 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 | \
30 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 | \
31 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
32
33 /* supported VIO voltages in milivolts */
34 static const u16 VIO_VSEL_table[] = {
35 1500, 1800, 2500, 3300,
36 };
37
38 /* VSEL tables for TPS65910 specific LDOs and dcdc's */
39
40 /* supported VDD3 voltages in milivolts */
41 static const u16 VDD3_VSEL_table[] = {
42 5000,
43 };
44
45 /* supported VDIG1 voltages in milivolts */
46 static const u16 VDIG1_VSEL_table[] = {
47 1200, 1500, 1800, 2700,
48 };
49
50 /* supported VDIG2 voltages in milivolts */
51 static const u16 VDIG2_VSEL_table[] = {
52 1000, 1100, 1200, 1800,
53 };
54
55 /* supported VPLL voltages in milivolts */
56 static const u16 VPLL_VSEL_table[] = {
57 1000, 1100, 1800, 2500,
58 };
59
60 /* supported VDAC voltages in milivolts */
61 static const u16 VDAC_VSEL_table[] = {
62 1800, 2600, 2800, 2850,
63 };
64
65 /* supported VAUX1 voltages in milivolts */
66 static const u16 VAUX1_VSEL_table[] = {
67 1800, 2500, 2800, 2850,
68 };
69
70 /* supported VAUX2 voltages in milivolts */
71 static const u16 VAUX2_VSEL_table[] = {
72 1800, 2800, 2900, 3300,
73 };
74
75 /* supported VAUX33 voltages in milivolts */
76 static const u16 VAUX33_VSEL_table[] = {
77 1800, 2000, 2800, 3300,
78 };
79
80 /* supported VMMC voltages in milivolts */
81 static const u16 VMMC_VSEL_table[] = {
82 1800, 2800, 3000, 3300,
83 };
84
85 struct tps_info {
86 const char *name;
87 unsigned min_uV;
88 unsigned max_uV;
89 u8 n_voltages;
90 const u16 *voltage_table;
91 int enable_time_us;
92 };
93
94 static struct tps_info tps65910_regs[] = {
95 {
96 .name = "VRTC",
97 .enable_time_us = 2200,
98 },
99 {
100 .name = "VIO",
101 .min_uV = 1500000,
102 .max_uV = 3300000,
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 .min_uV = 600000,
110 .max_uV = 4500000,
111 .enable_time_us = 350,
112 },
113 {
114 .name = "VDD2",
115 .min_uV = 600000,
116 .max_uV = 4500000,
117 .enable_time_us = 350,
118 },
119 {
120 .name = "VDD3",
121 .min_uV = 5000000,
122 .max_uV = 5000000,
123 .n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
124 .voltage_table = VDD3_VSEL_table,
125 .enable_time_us = 200,
126 },
127 {
128 .name = "VDIG1",
129 .min_uV = 1200000,
130 .max_uV = 2700000,
131 .n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
132 .voltage_table = VDIG1_VSEL_table,
133 .enable_time_us = 100,
134 },
135 {
136 .name = "VDIG2",
137 .min_uV = 1000000,
138 .max_uV = 1800000,
139 .n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
140 .voltage_table = VDIG2_VSEL_table,
141 .enable_time_us = 100,
142 },
143 {
144 .name = "VPLL",
145 .min_uV = 1000000,
146 .max_uV = 2500000,
147 .n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
148 .voltage_table = VPLL_VSEL_table,
149 .enable_time_us = 100,
150 },
151 {
152 .name = "VDAC",
153 .min_uV = 1800000,
154 .max_uV = 2850000,
155 .n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
156 .voltage_table = VDAC_VSEL_table,
157 .enable_time_us = 100,
158 },
159 {
160 .name = "VAUX1",
161 .min_uV = 1800000,
162 .max_uV = 2850000,
163 .n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
164 .voltage_table = VAUX1_VSEL_table,
165 .enable_time_us = 100,
166 },
167 {
168 .name = "VAUX2",
169 .min_uV = 1800000,
170 .max_uV = 3300000,
171 .n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
172 .voltage_table = VAUX2_VSEL_table,
173 .enable_time_us = 100,
174 },
175 {
176 .name = "VAUX33",
177 .min_uV = 1800000,
178 .max_uV = 3300000,
179 .n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
180 .voltage_table = VAUX33_VSEL_table,
181 .enable_time_us = 100,
182 },
183 {
184 .name = "VMMC",
185 .min_uV = 1800000,
186 .max_uV = 3300000,
187 .n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
188 .voltage_table = VMMC_VSEL_table,
189 .enable_time_us = 100,
190 },
191 };
192
193 static struct tps_info tps65911_regs[] = {
194 {
195 .name = "VRTC",
196 .enable_time_us = 2200,
197 },
198 {
199 .name = "VIO",
200 .min_uV = 1500000,
201 .max_uV = 3300000,
202 .n_voltages = ARRAY_SIZE(VIO_VSEL_table),
203 .voltage_table = VIO_VSEL_table,
204 .enable_time_us = 350,
205 },
206 {
207 .name = "VDD1",
208 .min_uV = 600000,
209 .max_uV = 4500000,
210 .n_voltages = 73,
211 .enable_time_us = 350,
212 },
213 {
214 .name = "VDD2",
215 .min_uV = 600000,
216 .max_uV = 4500000,
217 .n_voltages = 73,
218 .enable_time_us = 350,
219 },
220 {
221 .name = "VDDCTRL",
222 .min_uV = 600000,
223 .max_uV = 1400000,
224 .n_voltages = 65,
225 .enable_time_us = 900,
226 },
227 {
228 .name = "LDO1",
229 .min_uV = 1000000,
230 .max_uV = 3300000,
231 .n_voltages = 47,
232 .enable_time_us = 420,
233 },
234 {
235 .name = "LDO2",
236 .min_uV = 1000000,
237 .max_uV = 3300000,
238 .n_voltages = 47,
239 .enable_time_us = 420,
240 },
241 {
242 .name = "LDO3",
243 .min_uV = 1000000,
244 .max_uV = 3300000,
245 .n_voltages = 24,
246 .enable_time_us = 230,
247 },
248 {
249 .name = "LDO4",
250 .min_uV = 1000000,
251 .max_uV = 3300000,
252 .n_voltages = 47,
253 .enable_time_us = 230,
254 },
255 {
256 .name = "LDO5",
257 .min_uV = 1000000,
258 .max_uV = 3300000,
259 .n_voltages = 24,
260 .enable_time_us = 230,
261 },
262 {
263 .name = "LDO6",
264 .min_uV = 1000000,
265 .max_uV = 3300000,
266 .n_voltages = 24,
267 .enable_time_us = 230,
268 },
269 {
270 .name = "LDO7",
271 .min_uV = 1000000,
272 .max_uV = 3300000,
273 .n_voltages = 24,
274 .enable_time_us = 230,
275 },
276 {
277 .name = "LDO8",
278 .min_uV = 1000000,
279 .max_uV = 3300000,
280 .n_voltages = 24,
281 .enable_time_us = 230,
282 },
283 };
284
285 #define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
286 static unsigned int tps65910_ext_sleep_control[] = {
287 0,
288 EXT_CONTROL_REG_BITS(VIO, 1, 0),
289 EXT_CONTROL_REG_BITS(VDD1, 1, 1),
290 EXT_CONTROL_REG_BITS(VDD2, 1, 2),
291 EXT_CONTROL_REG_BITS(VDD3, 1, 3),
292 EXT_CONTROL_REG_BITS(VDIG1, 0, 1),
293 EXT_CONTROL_REG_BITS(VDIG2, 0, 2),
294 EXT_CONTROL_REG_BITS(VPLL, 0, 6),
295 EXT_CONTROL_REG_BITS(VDAC, 0, 7),
296 EXT_CONTROL_REG_BITS(VAUX1, 0, 3),
297 EXT_CONTROL_REG_BITS(VAUX2, 0, 4),
298 EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
299 EXT_CONTROL_REG_BITS(VMMC, 0, 0),
300 };
301
302 static unsigned int tps65911_ext_sleep_control[] = {
303 0,
304 EXT_CONTROL_REG_BITS(VIO, 1, 0),
305 EXT_CONTROL_REG_BITS(VDD1, 1, 1),
306 EXT_CONTROL_REG_BITS(VDD2, 1, 2),
307 EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
308 EXT_CONTROL_REG_BITS(LDO1, 0, 1),
309 EXT_CONTROL_REG_BITS(LDO2, 0, 2),
310 EXT_CONTROL_REG_BITS(LDO3, 0, 7),
311 EXT_CONTROL_REG_BITS(LDO4, 0, 6),
312 EXT_CONTROL_REG_BITS(LDO5, 0, 3),
313 EXT_CONTROL_REG_BITS(LDO6, 0, 0),
314 EXT_CONTROL_REG_BITS(LDO7, 0, 5),
315 EXT_CONTROL_REG_BITS(LDO8, 0, 4),
316 };
317
318 struct tps65910_reg {
319 struct regulator_desc *desc;
320 struct tps65910 *mfd;
321 struct regulator_dev **rdev;
322 struct tps_info **info;
323 struct mutex mutex;
324 int num_regulators;
325 int mode;
326 int (*get_ctrl_reg)(int);
327 unsigned int *ext_sleep_control;
328 unsigned int board_ext_control[TPS65910_NUM_REGS];
329 };
330
331 static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg)
332 {
333 u8 val;
334 int err;
335
336 err = pmic->mfd->read(pmic->mfd, reg, 1, &val);
337 if (err)
338 return err;
339
340 return val;
341 }
342
343 static inline int tps65910_write(struct tps65910_reg *pmic, u8 reg, u8 val)
344 {
345 return pmic->mfd->write(pmic->mfd, reg, 1, &val);
346 }
347
348 static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg,
349 u8 set_mask, u8 clear_mask)
350 {
351 int err, data;
352
353 mutex_lock(&pmic->mutex);
354
355 data = tps65910_read(pmic, reg);
356 if (data < 0) {
357 dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
358 err = data;
359 goto out;
360 }
361
362 data &= ~clear_mask;
363 data |= set_mask;
364 err = tps65910_write(pmic, reg, data);
365 if (err)
366 dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
367
368 out:
369 mutex_unlock(&pmic->mutex);
370 return err;
371 }
372
373 static int tps65910_reg_read(struct tps65910_reg *pmic, u8 reg)
374 {
375 int data;
376
377 mutex_lock(&pmic->mutex);
378
379 data = tps65910_read(pmic, reg);
380 if (data < 0)
381 dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
382
383 mutex_unlock(&pmic->mutex);
384 return data;
385 }
386
387 static int tps65910_reg_write(struct tps65910_reg *pmic, u8 reg, u8 val)
388 {
389 int err;
390
391 mutex_lock(&pmic->mutex);
392
393 err = tps65910_write(pmic, reg, val);
394 if (err < 0)
395 dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
396
397 mutex_unlock(&pmic->mutex);
398 return err;
399 }
400
401 static int tps65910_get_ctrl_register(int id)
402 {
403 switch (id) {
404 case TPS65910_REG_VRTC:
405 return TPS65910_VRTC;
406 case TPS65910_REG_VIO:
407 return TPS65910_VIO;
408 case TPS65910_REG_VDD1:
409 return TPS65910_VDD1;
410 case TPS65910_REG_VDD2:
411 return TPS65910_VDD2;
412 case TPS65910_REG_VDD3:
413 return TPS65910_VDD3;
414 case TPS65910_REG_VDIG1:
415 return TPS65910_VDIG1;
416 case TPS65910_REG_VDIG2:
417 return TPS65910_VDIG2;
418 case TPS65910_REG_VPLL:
419 return TPS65910_VPLL;
420 case TPS65910_REG_VDAC:
421 return TPS65910_VDAC;
422 case TPS65910_REG_VAUX1:
423 return TPS65910_VAUX1;
424 case TPS65910_REG_VAUX2:
425 return TPS65910_VAUX2;
426 case TPS65910_REG_VAUX33:
427 return TPS65910_VAUX33;
428 case TPS65910_REG_VMMC:
429 return TPS65910_VMMC;
430 default:
431 return -EINVAL;
432 }
433 }
434
435 static int tps65911_get_ctrl_register(int id)
436 {
437 switch (id) {
438 case TPS65910_REG_VRTC:
439 return TPS65910_VRTC;
440 case TPS65910_REG_VIO:
441 return TPS65910_VIO;
442 case TPS65910_REG_VDD1:
443 return TPS65910_VDD1;
444 case TPS65910_REG_VDD2:
445 return TPS65910_VDD2;
446 case TPS65911_REG_VDDCTRL:
447 return TPS65911_VDDCTRL;
448 case TPS65911_REG_LDO1:
449 return TPS65911_LDO1;
450 case TPS65911_REG_LDO2:
451 return TPS65911_LDO2;
452 case TPS65911_REG_LDO3:
453 return TPS65911_LDO3;
454 case TPS65911_REG_LDO4:
455 return TPS65911_LDO4;
456 case TPS65911_REG_LDO5:
457 return TPS65911_LDO5;
458 case TPS65911_REG_LDO6:
459 return TPS65911_LDO6;
460 case TPS65911_REG_LDO7:
461 return TPS65911_LDO7;
462 case TPS65911_REG_LDO8:
463 return TPS65911_LDO8;
464 default:
465 return -EINVAL;
466 }
467 }
468
469 static int tps65910_is_enabled(struct regulator_dev *dev)
470 {
471 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
472 int reg, value, id = rdev_get_id(dev);
473
474 reg = pmic->get_ctrl_reg(id);
475 if (reg < 0)
476 return reg;
477
478 value = tps65910_reg_read(pmic, reg);
479 if (value < 0)
480 return value;
481
482 return value & TPS65910_SUPPLY_STATE_ENABLED;
483 }
484
485 static int tps65910_enable(struct regulator_dev *dev)
486 {
487 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
488 struct tps65910 *mfd = pmic->mfd;
489 int reg, id = rdev_get_id(dev);
490
491 reg = pmic->get_ctrl_reg(id);
492 if (reg < 0)
493 return reg;
494
495 return tps65910_set_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
496 }
497
498 static int tps65910_disable(struct regulator_dev *dev)
499 {
500 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
501 struct tps65910 *mfd = pmic->mfd;
502 int reg, id = rdev_get_id(dev);
503
504 reg = pmic->get_ctrl_reg(id);
505 if (reg < 0)
506 return reg;
507
508 return tps65910_clear_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
509 }
510
511 static int tps65910_enable_time(struct regulator_dev *dev)
512 {
513 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
514 int id = rdev_get_id(dev);
515 return pmic->info[id]->enable_time_us;
516 }
517
518 static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
519 {
520 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
521 struct tps65910 *mfd = pmic->mfd;
522 int reg, value, id = rdev_get_id(dev);
523
524 reg = pmic->get_ctrl_reg(id);
525 if (reg < 0)
526 return reg;
527
528 switch (mode) {
529 case REGULATOR_MODE_NORMAL:
530 return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT,
531 LDO_ST_MODE_BIT);
532 case REGULATOR_MODE_IDLE:
533 value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
534 return tps65910_set_bits(mfd, reg, value);
535 case REGULATOR_MODE_STANDBY:
536 return tps65910_clear_bits(mfd, reg, LDO_ST_ON_BIT);
537 }
538
539 return -EINVAL;
540 }
541
542 static unsigned int tps65910_get_mode(struct regulator_dev *dev)
543 {
544 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
545 int reg, value, id = rdev_get_id(dev);
546
547 reg = pmic->get_ctrl_reg(id);
548 if (reg < 0)
549 return reg;
550
551 value = tps65910_reg_read(pmic, reg);
552 if (value < 0)
553 return value;
554
555 if (!(value & LDO_ST_ON_BIT))
556 return REGULATOR_MODE_STANDBY;
557 else if (value & LDO_ST_MODE_BIT)
558 return REGULATOR_MODE_IDLE;
559 else
560 return REGULATOR_MODE_NORMAL;
561 }
562
563 static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
564 {
565 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
566 int id = rdev_get_id(dev);
567 int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
568
569 switch (id) {
570 case TPS65910_REG_VDD1:
571 opvsel = tps65910_reg_read(pmic, TPS65910_VDD1_OP);
572 mult = tps65910_reg_read(pmic, TPS65910_VDD1);
573 mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
574 srvsel = tps65910_reg_read(pmic, TPS65910_VDD1_SR);
575 sr = opvsel & VDD1_OP_CMD_MASK;
576 opvsel &= VDD1_OP_SEL_MASK;
577 srvsel &= VDD1_SR_SEL_MASK;
578 vselmax = 75;
579 break;
580 case TPS65910_REG_VDD2:
581 opvsel = tps65910_reg_read(pmic, TPS65910_VDD2_OP);
582 mult = tps65910_reg_read(pmic, TPS65910_VDD2);
583 mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
584 srvsel = tps65910_reg_read(pmic, TPS65910_VDD2_SR);
585 sr = opvsel & VDD2_OP_CMD_MASK;
586 opvsel &= VDD2_OP_SEL_MASK;
587 srvsel &= VDD2_SR_SEL_MASK;
588 vselmax = 75;
589 break;
590 case TPS65911_REG_VDDCTRL:
591 opvsel = tps65910_reg_read(pmic, TPS65911_VDDCTRL_OP);
592 srvsel = tps65910_reg_read(pmic, TPS65911_VDDCTRL_SR);
593 sr = opvsel & VDDCTRL_OP_CMD_MASK;
594 opvsel &= VDDCTRL_OP_SEL_MASK;
595 srvsel &= VDDCTRL_SR_SEL_MASK;
596 vselmax = 64;
597 break;
598 }
599
600 /* multiplier 0 == 1 but 2,3 normal */
601 if (!mult)
602 mult=1;
603
604 if (sr) {
605 /* normalise to valid range */
606 if (srvsel < 3)
607 srvsel = 3;
608 if (srvsel > vselmax)
609 srvsel = vselmax;
610 return srvsel - 3;
611 } else {
612
613 /* normalise to valid range*/
614 if (opvsel < 3)
615 opvsel = 3;
616 if (opvsel > vselmax)
617 opvsel = vselmax;
618 return opvsel - 3;
619 }
620 return -EINVAL;
621 }
622
623 static int tps65910_get_voltage(struct regulator_dev *dev)
624 {
625 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
626 int reg, value, id = rdev_get_id(dev), voltage = 0;
627
628 reg = pmic->get_ctrl_reg(id);
629 if (reg < 0)
630 return reg;
631
632 value = tps65910_reg_read(pmic, reg);
633 if (value < 0)
634 return value;
635
636 switch (id) {
637 case TPS65910_REG_VIO:
638 case TPS65910_REG_VDIG1:
639 case TPS65910_REG_VDIG2:
640 case TPS65910_REG_VPLL:
641 case TPS65910_REG_VDAC:
642 case TPS65910_REG_VAUX1:
643 case TPS65910_REG_VAUX2:
644 case TPS65910_REG_VAUX33:
645 case TPS65910_REG_VMMC:
646 value &= LDO_SEL_MASK;
647 value >>= LDO_SEL_SHIFT;
648 break;
649 default:
650 return -EINVAL;
651 }
652
653 voltage = pmic->info[id]->voltage_table[value] * 1000;
654
655 return voltage;
656 }
657
658 static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
659 {
660 return 5 * 1000 * 1000;
661 }
662
663 static int tps65911_get_voltage(struct regulator_dev *dev)
664 {
665 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
666 int step_mv, id = rdev_get_id(dev);
667 u8 value, reg;
668
669 reg = pmic->get_ctrl_reg(id);
670
671 value = tps65910_reg_read(pmic, reg);
672
673 switch (id) {
674 case TPS65911_REG_LDO1:
675 case TPS65911_REG_LDO2:
676 case TPS65911_REG_LDO4:
677 value &= LDO1_SEL_MASK;
678 value >>= LDO_SEL_SHIFT;
679 /* The first 5 values of the selector correspond to 1V */
680 if (value < 5)
681 value = 0;
682 else
683 value -= 4;
684
685 step_mv = 50;
686 break;
687 case TPS65911_REG_LDO3:
688 case TPS65911_REG_LDO5:
689 case TPS65911_REG_LDO6:
690 case TPS65911_REG_LDO7:
691 case TPS65911_REG_LDO8:
692 value &= LDO3_SEL_MASK;
693 value >>= LDO_SEL_SHIFT;
694 /* The first 3 values of the selector correspond to 1V */
695 if (value < 3)
696 value = 0;
697 else
698 value -= 2;
699
700 step_mv = 100;
701 break;
702 case TPS65910_REG_VIO:
703 value &= LDO_SEL_MASK;
704 value >>= LDO_SEL_SHIFT;
705 return pmic->info[id]->voltage_table[value] * 1000;
706 default:
707 return -EINVAL;
708 }
709
710 return (LDO_MIN_VOLT + value * step_mv) * 1000;
711 }
712
713 static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
714 unsigned selector)
715 {
716 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
717 int id = rdev_get_id(dev), vsel;
718 int dcdc_mult = 0;
719
720 switch (id) {
721 case TPS65910_REG_VDD1:
722 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
723 if (dcdc_mult == 1)
724 dcdc_mult--;
725 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
726
727 tps65910_modify_bits(pmic, TPS65910_VDD1,
728 (dcdc_mult << VDD1_VGAIN_SEL_SHIFT),
729 VDD1_VGAIN_SEL_MASK);
730 tps65910_reg_write(pmic, TPS65910_VDD1_OP, vsel);
731 break;
732 case TPS65910_REG_VDD2:
733 dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
734 if (dcdc_mult == 1)
735 dcdc_mult--;
736 vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
737
738 tps65910_modify_bits(pmic, TPS65910_VDD2,
739 (dcdc_mult << VDD2_VGAIN_SEL_SHIFT),
740 VDD1_VGAIN_SEL_MASK);
741 tps65910_reg_write(pmic, TPS65910_VDD2_OP, vsel);
742 break;
743 case TPS65911_REG_VDDCTRL:
744 vsel = selector + 3;
745 tps65910_reg_write(pmic, TPS65911_VDDCTRL_OP, vsel);
746 }
747
748 return 0;
749 }
750
751 static int tps65910_set_voltage_sel(struct regulator_dev *dev,
752 unsigned selector)
753 {
754 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
755 int reg, id = rdev_get_id(dev);
756
757 reg = pmic->get_ctrl_reg(id);
758 if (reg < 0)
759 return reg;
760
761 switch (id) {
762 case TPS65910_REG_VIO:
763 case TPS65910_REG_VDIG1:
764 case TPS65910_REG_VDIG2:
765 case TPS65910_REG_VPLL:
766 case TPS65910_REG_VDAC:
767 case TPS65910_REG_VAUX1:
768 case TPS65910_REG_VAUX2:
769 case TPS65910_REG_VAUX33:
770 case TPS65910_REG_VMMC:
771 return tps65910_modify_bits(pmic, reg,
772 (selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
773 }
774
775 return -EINVAL;
776 }
777
778 static int tps65911_set_voltage_sel(struct regulator_dev *dev,
779 unsigned selector)
780 {
781 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
782 int reg, id = rdev_get_id(dev);
783
784 reg = pmic->get_ctrl_reg(id);
785 if (reg < 0)
786 return reg;
787
788 switch (id) {
789 case TPS65911_REG_LDO1:
790 case TPS65911_REG_LDO2:
791 case TPS65911_REG_LDO4:
792 return tps65910_modify_bits(pmic, reg,
793 (selector << LDO_SEL_SHIFT), LDO1_SEL_MASK);
794 case TPS65911_REG_LDO3:
795 case TPS65911_REG_LDO5:
796 case TPS65911_REG_LDO6:
797 case TPS65911_REG_LDO7:
798 case TPS65911_REG_LDO8:
799 return tps65910_modify_bits(pmic, reg,
800 (selector << LDO_SEL_SHIFT), LDO3_SEL_MASK);
801 case TPS65910_REG_VIO:
802 return tps65910_modify_bits(pmic, reg,
803 (selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
804 }
805
806 return -EINVAL;
807 }
808
809
810 static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
811 unsigned selector)
812 {
813 int volt, mult = 1, id = rdev_get_id(dev);
814
815 switch (id) {
816 case TPS65910_REG_VDD1:
817 case TPS65910_REG_VDD2:
818 mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
819 volt = VDD1_2_MIN_VOLT +
820 (selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
821 break;
822 case TPS65911_REG_VDDCTRL:
823 volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
824 break;
825 default:
826 BUG();
827 return -EINVAL;
828 }
829
830 return volt * 100 * mult;
831 }
832
833 static int tps65910_list_voltage(struct regulator_dev *dev,
834 unsigned selector)
835 {
836 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
837 int id = rdev_get_id(dev), voltage;
838
839 if (id < TPS65910_REG_VIO || id > TPS65910_REG_VMMC)
840 return -EINVAL;
841
842 if (selector >= pmic->info[id]->n_voltages)
843 return -EINVAL;
844 else
845 voltage = pmic->info[id]->voltage_table[selector] * 1000;
846
847 return voltage;
848 }
849
850 static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
851 {
852 struct tps65910_reg *pmic = rdev_get_drvdata(dev);
853 int step_mv = 0, id = rdev_get_id(dev);
854
855 switch(id) {
856 case TPS65911_REG_LDO1:
857 case TPS65911_REG_LDO2:
858 case TPS65911_REG_LDO4:
859 /* The first 5 values of the selector correspond to 1V */
860 if (selector < 5)
861 selector = 0;
862 else
863 selector -= 4;
864
865 step_mv = 50;
866 break;
867 case TPS65911_REG_LDO3:
868 case TPS65911_REG_LDO5:
869 case TPS65911_REG_LDO6:
870 case TPS65911_REG_LDO7:
871 case TPS65911_REG_LDO8:
872 /* The first 3 values of the selector correspond to 1V */
873 if (selector < 3)
874 selector = 0;
875 else
876 selector -= 2;
877
878 step_mv = 100;
879 break;
880 case TPS65910_REG_VIO:
881 return pmic->info[id]->voltage_table[selector] * 1000;
882 default:
883 return -EINVAL;
884 }
885
886 return (LDO_MIN_VOLT + selector * step_mv) * 1000;
887 }
888
889 static int tps65910_set_voltage_dcdc_time_sel(struct regulator_dev *dev,
890 unsigned int old_selector, unsigned int new_selector)
891 {
892 int id = rdev_get_id(dev);
893 int old_volt, new_volt;
894
895 old_volt = tps65910_list_voltage_dcdc(dev, old_selector);
896 if (old_volt < 0)
897 return old_volt;
898
899 new_volt = tps65910_list_voltage_dcdc(dev, new_selector);
900 if (new_volt < 0)
901 return new_volt;
902
903 /* VDD1 and VDD2 are 12.5mV/us, VDDCTRL is 100mV/20us */
904 switch (id) {
905 case TPS65910_REG_VDD1:
906 case TPS65910_REG_VDD2:
907 return DIV_ROUND_UP(abs(old_volt - new_volt), 12500);
908 case TPS65911_REG_VDDCTRL:
909 return DIV_ROUND_UP(abs(old_volt - new_volt), 5000);
910 }
911 return -EINVAL;
912 }
913
914 /* Regulator ops (except VRTC) */
915 static struct regulator_ops tps65910_ops_dcdc = {
916 .is_enabled = tps65910_is_enabled,
917 .enable = tps65910_enable,
918 .disable = tps65910_disable,
919 .enable_time = tps65910_enable_time,
920 .set_mode = tps65910_set_mode,
921 .get_mode = tps65910_get_mode,
922 .get_voltage_sel = tps65910_get_voltage_dcdc_sel,
923 .set_voltage_sel = tps65910_set_voltage_dcdc_sel,
924 .set_voltage_time_sel = tps65910_set_voltage_dcdc_time_sel,
925 .list_voltage = tps65910_list_voltage_dcdc,
926 };
927
928 static struct regulator_ops tps65910_ops_vdd3 = {
929 .is_enabled = tps65910_is_enabled,
930 .enable = tps65910_enable,
931 .disable = tps65910_disable,
932 .enable_time = tps65910_enable_time,
933 .set_mode = tps65910_set_mode,
934 .get_mode = tps65910_get_mode,
935 .get_voltage = tps65910_get_voltage_vdd3,
936 .list_voltage = tps65910_list_voltage,
937 };
938
939 static struct regulator_ops tps65910_ops = {
940 .is_enabled = tps65910_is_enabled,
941 .enable = tps65910_enable,
942 .disable = tps65910_disable,
943 .enable_time = tps65910_enable_time,
944 .set_mode = tps65910_set_mode,
945 .get_mode = tps65910_get_mode,
946 .get_voltage = tps65910_get_voltage,
947 .set_voltage_sel = tps65910_set_voltage_sel,
948 .list_voltage = tps65910_list_voltage,
949 };
950
951 static struct regulator_ops tps65911_ops = {
952 .is_enabled = tps65910_is_enabled,
953 .enable = tps65910_enable,
954 .disable = tps65910_disable,
955 .enable_time = tps65910_enable_time,
956 .set_mode = tps65910_set_mode,
957 .get_mode = tps65910_get_mode,
958 .get_voltage = tps65911_get_voltage,
959 .set_voltage_sel = tps65911_set_voltage_sel,
960 .list_voltage = tps65911_list_voltage,
961 };
962
963 static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
964 int id, int ext_sleep_config)
965 {
966 struct tps65910 *mfd = pmic->mfd;
967 u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
968 u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
969 int ret;
970
971 /*
972 * Regulator can not be control from multiple external input EN1, EN2
973 * and EN3 together.
974 */
975 if (ext_sleep_config & EXT_SLEEP_CONTROL) {
976 int en_count;
977 en_count = ((ext_sleep_config &
978 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
979 en_count += ((ext_sleep_config &
980 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
981 en_count += ((ext_sleep_config &
982 TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
983 en_count += ((ext_sleep_config &
984 TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
985 if (en_count > 1) {
986 dev_err(mfd->dev,
987 "External sleep control flag is not proper\n");
988 return -EINVAL;
989 }
990 }
991
992 pmic->board_ext_control[id] = ext_sleep_config;
993
994 /* External EN1 control */
995 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
996 ret = tps65910_set_bits(mfd,
997 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
998 else
999 ret = tps65910_clear_bits(mfd,
1000 TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
1001 if (ret < 0) {
1002 dev_err(mfd->dev,
1003 "Error in configuring external control EN1\n");
1004 return ret;
1005 }
1006
1007 /* External EN2 control */
1008 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
1009 ret = tps65910_set_bits(mfd,
1010 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
1011 else
1012 ret = tps65910_clear_bits(mfd,
1013 TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
1014 if (ret < 0) {
1015 dev_err(mfd->dev,
1016 "Error in configuring external control EN2\n");
1017 return ret;
1018 }
1019
1020 /* External EN3 control for TPS65910 LDO only */
1021 if ((tps65910_chip_id(mfd) == TPS65910) &&
1022 (id >= TPS65910_REG_VDIG1)) {
1023 if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
1024 ret = tps65910_set_bits(mfd,
1025 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
1026 else
1027 ret = tps65910_clear_bits(mfd,
1028 TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
1029 if (ret < 0) {
1030 dev_err(mfd->dev,
1031 "Error in configuring external control EN3\n");
1032 return ret;
1033 }
1034 }
1035
1036 /* Return if no external control is selected */
1037 if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
1038 /* Clear all sleep controls */
1039 ret = tps65910_clear_bits(mfd,
1040 TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
1041 if (!ret)
1042 ret = tps65910_clear_bits(mfd,
1043 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
1044 if (ret < 0)
1045 dev_err(mfd->dev,
1046 "Error in configuring SLEEP register\n");
1047 return ret;
1048 }
1049
1050 /*
1051 * For regulator that has separate operational and sleep register make
1052 * sure that operational is used and clear sleep register to turn
1053 * regulator off when external control is inactive
1054 */
1055 if ((id == TPS65910_REG_VDD1) ||
1056 (id == TPS65910_REG_VDD2) ||
1057 ((id == TPS65911_REG_VDDCTRL) &&
1058 (tps65910_chip_id(mfd) == TPS65911))) {
1059 int op_reg_add = pmic->get_ctrl_reg(id) + 1;
1060 int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
1061 int opvsel = tps65910_reg_read(pmic, op_reg_add);
1062 int srvsel = tps65910_reg_read(pmic, sr_reg_add);
1063 if (opvsel & VDD1_OP_CMD_MASK) {
1064 u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
1065 ret = tps65910_reg_write(pmic, op_reg_add, reg_val);
1066 if (ret < 0) {
1067 dev_err(mfd->dev,
1068 "Error in configuring op register\n");
1069 return ret;
1070 }
1071 }
1072 ret = tps65910_reg_write(pmic, sr_reg_add, 0);
1073 if (ret < 0) {
1074 dev_err(mfd->dev, "Error in settting sr register\n");
1075 return ret;
1076 }
1077 }
1078
1079 ret = tps65910_clear_bits(mfd,
1080 TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
1081 if (!ret) {
1082 if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
1083 ret = tps65910_set_bits(mfd,
1084 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
1085 else
1086 ret = tps65910_clear_bits(mfd,
1087 TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
1088 }
1089 if (ret < 0)
1090 dev_err(mfd->dev,
1091 "Error in configuring SLEEP register\n");
1092
1093 return ret;
1094 }
1095
1096 static __devinit int tps65910_probe(struct platform_device *pdev)
1097 {
1098 struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
1099 struct regulator_config config = { };
1100 struct tps_info *info;
1101 struct regulator_init_data *reg_data;
1102 struct regulator_dev *rdev;
1103 struct tps65910_reg *pmic;
1104 struct tps65910_board *pmic_plat_data;
1105 int i, err;
1106
1107 pmic_plat_data = dev_get_platdata(tps65910->dev);
1108 if (!pmic_plat_data)
1109 return -EINVAL;
1110
1111 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
1112 if (!pmic)
1113 return -ENOMEM;
1114
1115 mutex_init(&pmic->mutex);
1116 pmic->mfd = tps65910;
1117 platform_set_drvdata(pdev, pmic);
1118
1119 /* Give control of all register to control port */
1120 tps65910_set_bits(pmic->mfd, TPS65910_DEVCTRL,
1121 DEVCTRL_SR_CTL_I2C_SEL_MASK);
1122
1123 switch(tps65910_chip_id(tps65910)) {
1124 case TPS65910:
1125 pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
1126 pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
1127 pmic->ext_sleep_control = tps65910_ext_sleep_control;
1128 info = tps65910_regs;
1129 break;
1130 case TPS65911:
1131 pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
1132 pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
1133 pmic->ext_sleep_control = tps65911_ext_sleep_control;
1134 info = tps65911_regs;
1135 break;
1136 default:
1137 pr_err("Invalid tps chip version\n");
1138 return -ENODEV;
1139 }
1140
1141 pmic->desc = kcalloc(pmic->num_regulators,
1142 sizeof(struct regulator_desc), GFP_KERNEL);
1143 if (!pmic->desc) {
1144 err = -ENOMEM;
1145 goto err_out;
1146 }
1147
1148 pmic->info = kcalloc(pmic->num_regulators,
1149 sizeof(struct tps_info *), GFP_KERNEL);
1150 if (!pmic->info) {
1151 err = -ENOMEM;
1152 goto err_free_desc;
1153 }
1154
1155 pmic->rdev = kcalloc(pmic->num_regulators,
1156 sizeof(struct regulator_dev *), GFP_KERNEL);
1157 if (!pmic->rdev) {
1158 err = -ENOMEM;
1159 goto err_free_info;
1160 }
1161
1162 for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS;
1163 i++, info++) {
1164
1165 reg_data = pmic_plat_data->tps65910_pmic_init_data[i];
1166
1167 /* Regulator API handles empty constraints but not NULL
1168 * constraints */
1169 if (!reg_data)
1170 continue;
1171
1172 /* Register the regulators */
1173 pmic->info[i] = info;
1174
1175 pmic->desc[i].name = info->name;
1176 pmic->desc[i].id = i;
1177 pmic->desc[i].n_voltages = info->n_voltages;
1178
1179 if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
1180 pmic->desc[i].ops = &tps65910_ops_dcdc;
1181 pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
1182 VDD1_2_NUM_VOLT_COARSE;
1183 } else if (i == TPS65910_REG_VDD3) {
1184 if (tps65910_chip_id(tps65910) == TPS65910)
1185 pmic->desc[i].ops = &tps65910_ops_vdd3;
1186 else
1187 pmic->desc[i].ops = &tps65910_ops_dcdc;
1188 } else {
1189 if (tps65910_chip_id(tps65910) == TPS65910)
1190 pmic->desc[i].ops = &tps65910_ops;
1191 else
1192 pmic->desc[i].ops = &tps65911_ops;
1193 }
1194
1195 err = tps65910_set_ext_sleep_config(pmic, i,
1196 pmic_plat_data->regulator_ext_sleep_control[i]);
1197 /*
1198 * Failing on regulator for configuring externally control
1199 * is not a serious issue, just throw warning.
1200 */
1201 if (err < 0)
1202 dev_warn(tps65910->dev,
1203 "Failed to initialise ext control config\n");
1204
1205 pmic->desc[i].type = REGULATOR_VOLTAGE;
1206 pmic->desc[i].owner = THIS_MODULE;
1207
1208 config.dev = tps65910->dev;
1209 config.init_data = reg_data;
1210 config.driver_data = pmic;
1211
1212 rdev = regulator_register(&pmic->desc[i], &config);
1213 if (IS_ERR(rdev)) {
1214 dev_err(tps65910->dev,
1215 "failed to register %s regulator\n",
1216 pdev->name);
1217 err = PTR_ERR(rdev);
1218 goto err_unregister_regulator;
1219 }
1220
1221 /* Save regulator for cleanup */
1222 pmic->rdev[i] = rdev;
1223 }
1224 return 0;
1225
1226 err_unregister_regulator:
1227 while (--i >= 0)
1228 regulator_unregister(pmic->rdev[i]);
1229 kfree(pmic->rdev);
1230 err_free_info:
1231 kfree(pmic->info);
1232 err_free_desc:
1233 kfree(pmic->desc);
1234 err_out:
1235 return err;
1236 }
1237
1238 static int __devexit tps65910_remove(struct platform_device *pdev)
1239 {
1240 struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1241 int i;
1242
1243 for (i = 0; i < pmic->num_regulators; i++)
1244 regulator_unregister(pmic->rdev[i]);
1245
1246 kfree(pmic->rdev);
1247 kfree(pmic->info);
1248 kfree(pmic->desc);
1249 return 0;
1250 }
1251
1252 static void tps65910_shutdown(struct platform_device *pdev)
1253 {
1254 struct tps65910_reg *pmic = platform_get_drvdata(pdev);
1255 int i;
1256
1257 /*
1258 * Before bootloader jumps to kernel, it makes sure that required
1259 * external control signals are in desired state so that given rails
1260 * can be configure accordingly.
1261 * If rails are configured to be controlled from external control
1262 * then before shutting down/rebooting the system, the external
1263 * control configuration need to be remove from the rails so that
1264 * its output will be available as per register programming even
1265 * if external controls are removed. This is require when the POR
1266 * value of the control signals are not in active state and before
1267 * bootloader initializes it, the system requires the rail output
1268 * to be active for booting.
1269 */
1270 for (i = 0; i < pmic->num_regulators; i++) {
1271 int err;
1272 if (!pmic->rdev[i])
1273 continue;
1274
1275 err = tps65910_set_ext_sleep_config(pmic, i, 0);
1276 if (err < 0)
1277 dev_err(&pdev->dev,
1278 "Error in clearing external control\n");
1279 }
1280 }
1281
1282 static struct platform_driver tps65910_driver = {
1283 .driver = {
1284 .name = "tps65910-pmic",
1285 .owner = THIS_MODULE,
1286 },
1287 .probe = tps65910_probe,
1288 .remove = __devexit_p(tps65910_remove),
1289 .shutdown = tps65910_shutdown,
1290 };
1291
1292 static int __init tps65910_init(void)
1293 {
1294 return platform_driver_register(&tps65910_driver);
1295 }
1296 subsys_initcall(tps65910_init);
1297
1298 static void __exit tps65910_cleanup(void)
1299 {
1300 platform_driver_unregister(&tps65910_driver);
1301 }
1302 module_exit(tps65910_cleanup);
1303
1304 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1305 MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
1306 MODULE_LICENSE("GPL v2");
1307 MODULE_ALIAS("platform:tps65910-pmic");
Linux kernel - Deliverables
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