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Merge remote-tracking branch 'regulator/topic/tps516312' into regulator-next
[deliverable/linux.git] / drivers / regulator / palmas-regulator.c
CommitLineData
e5ce4208
GG		 1/*
2 * Driver for Regulator part of Palmas PMIC Chips
3 *
4 * Copyright 2011-2012 Texas Instruments Inc.
5 *
6 * Author: Graeme Gregory <gg@slimlogic.co.uk>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 */
14
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/init.h>
18#include <linux/err.h>
19#include <linux/platform_device.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/machine.h>
22#include <linux/slab.h>
23#include <linux/regmap.h>
24#include <linux/mfd/palmas.h>
a361cd9f
GG		 25#include <linux/of.h>
26#include <linux/of_platform.h>
27#include <linux/regulator/of_regulator.h>
e5ce4208
GG		 28
29struct regs_info {
30 char *name;
31 u8 vsel_addr;
32 u8 ctrl_addr;
33 u8 tstep_addr;
34};
35
36static const struct regs_info palmas_regs_info[] = {
37 {
38 .name = "SMPS12",
39 .vsel_addr = PALMAS_SMPS12_VOLTAGE,
40 .ctrl_addr = PALMAS_SMPS12_CTRL,
41 .tstep_addr = PALMAS_SMPS12_TSTEP,
42 },
43 {
44 .name = "SMPS123",
45 .vsel_addr = PALMAS_SMPS12_VOLTAGE,
46 .ctrl_addr = PALMAS_SMPS12_CTRL,
47 .tstep_addr = PALMAS_SMPS12_TSTEP,
48 },
49 {
50 .name = "SMPS3",
51 .vsel_addr = PALMAS_SMPS3_VOLTAGE,
52 .ctrl_addr = PALMAS_SMPS3_CTRL,
53 },
54 {
55 .name = "SMPS45",
56 .vsel_addr = PALMAS_SMPS45_VOLTAGE,
57 .ctrl_addr = PALMAS_SMPS45_CTRL,
58 .tstep_addr = PALMAS_SMPS45_TSTEP,
59 },
60 {
61 .name = "SMPS457",
62 .vsel_addr = PALMAS_SMPS45_VOLTAGE,
63 .ctrl_addr = PALMAS_SMPS45_CTRL,
64 .tstep_addr = PALMAS_SMPS45_TSTEP,
65 },
66 {
67 .name = "SMPS6",
68 .vsel_addr = PALMAS_SMPS6_VOLTAGE,
69 .ctrl_addr = PALMAS_SMPS6_CTRL,
70 .tstep_addr = PALMAS_SMPS6_TSTEP,
71 },
72 {
73 .name = "SMPS7",
74 .vsel_addr = PALMAS_SMPS7_VOLTAGE,
75 .ctrl_addr = PALMAS_SMPS7_CTRL,
76 },
77 {
78 .name = "SMPS8",
79 .vsel_addr = PALMAS_SMPS8_VOLTAGE,
80 .ctrl_addr = PALMAS_SMPS8_CTRL,
81 .tstep_addr = PALMAS_SMPS8_TSTEP,
82 },
83 {
84 .name = "SMPS9",
85 .vsel_addr = PALMAS_SMPS9_VOLTAGE,
86 .ctrl_addr = PALMAS_SMPS9_CTRL,
87 },
88 {
89 .name = "SMPS10",
90 },
91 {
92 .name = "LDO1",
93 .vsel_addr = PALMAS_LDO1_VOLTAGE,
94 .ctrl_addr = PALMAS_LDO1_CTRL,
95 },
96 {
97 .name = "LDO2",
98 .vsel_addr = PALMAS_LDO2_VOLTAGE,
99 .ctrl_addr = PALMAS_LDO2_CTRL,
100 },
101 {
102 .name = "LDO3",
103 .vsel_addr = PALMAS_LDO3_VOLTAGE,
104 .ctrl_addr = PALMAS_LDO3_CTRL,
105 },
106 {
107 .name = "LDO4",
108 .vsel_addr = PALMAS_LDO4_VOLTAGE,
109 .ctrl_addr = PALMAS_LDO4_CTRL,
110 },
111 {
112 .name = "LDO5",
113 .vsel_addr = PALMAS_LDO5_VOLTAGE,
114 .ctrl_addr = PALMAS_LDO5_CTRL,
115 },
116 {
117 .name = "LDO6",
118 .vsel_addr = PALMAS_LDO6_VOLTAGE,
119 .ctrl_addr = PALMAS_LDO6_CTRL,
120 },
121 {
122 .name = "LDO7",
123 .vsel_addr = PALMAS_LDO7_VOLTAGE,
124 .ctrl_addr = PALMAS_LDO7_CTRL,
125 },
126 {
127 .name = "LDO8",
128 .vsel_addr = PALMAS_LDO8_VOLTAGE,
129 .ctrl_addr = PALMAS_LDO8_CTRL,
130 },
131 {
132 .name = "LDO9",
133 .vsel_addr = PALMAS_LDO9_VOLTAGE,
134 .ctrl_addr = PALMAS_LDO9_CTRL,
135 },
136 {
137 .name = "LDOLN",
138 .vsel_addr = PALMAS_LDOLN_VOLTAGE,
139 .ctrl_addr = PALMAS_LDOLN_CTRL,
140 },
141 {
142 .name = "LDOUSB",
143 .vsel_addr = PALMAS_LDOUSB_VOLTAGE,
144 .ctrl_addr = PALMAS_LDOUSB_CTRL,
145 },
146};
147
148#define SMPS_CTRL_MODE_OFF 0x00
149#define SMPS_CTRL_MODE_ON 0x01
150#define SMPS_CTRL_MODE_ECO 0x02
151#define SMPS_CTRL_MODE_PWM 0x03
152
153/* These values are derived from the data sheet. And are the number of steps
154 * where there is a voltage change, the ranges at beginning and end of register
155 * max/min values where there are no change are ommitted.
156 *
157 * So they are basically (maxV-minV)/stepV
158 */
159#define PALMAS_SMPS_NUM_VOLTAGES 116
160#define PALMAS_SMPS10_NUM_VOLTAGES 2
161#define PALMAS_LDO_NUM_VOLTAGES 50
162
163#define SMPS10_VSEL (1<<3)
164#define SMPS10_BOOST_EN (1<<2)
165#define SMPS10_BYPASS_EN (1<<1)
166#define SMPS10_SWITCH_EN (1<<0)
167
168#define REGULATOR_SLAVE 0
169
170static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
171 unsigned int *dest)
172{
173 unsigned int addr;
174
175 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
176
177 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
178}
179
180static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
181 unsigned int value)
182{
183 unsigned int addr;
184
185 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
186
187 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
188}
189
190static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
191 unsigned int *dest)
192{
193 unsigned int addr;
194
195 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
196
197 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
198}
199
200static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
201 unsigned int value)
202{
203 unsigned int addr;
204
205 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
206
207 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
208}
209
210static int palmas_is_enabled_smps(struct regulator_dev *dev)
211{
212 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
213 int id = rdev_get_id(dev);
214 unsigned int reg;
215
216 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
217
218 reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
219 reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
220
221 return !!(reg);
222}
223
224static int palmas_enable_smps(struct regulator_dev *dev)
225{
226 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
227 int id = rdev_get_id(dev);
228 unsigned int reg;
229
230 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
231
232 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
233 reg |= SMPS_CTRL_MODE_ON;
234
235 palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
236
237 return 0;
238}
239
240static int palmas_disable_smps(struct regulator_dev *dev)
241{
242 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
243 int id = rdev_get_id(dev);
244 unsigned int reg;
245
246 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
247
248 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
249
250 palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
251
252 return 0;
253}
254
255
256static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
257{
258 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
259 int id = rdev_get_id(dev);
260 unsigned int reg;
261
262 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
999f0c7c 263 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
e5ce4208
GG		 264
265 switch (mode) {
266 case REGULATOR_MODE_NORMAL:
267 reg |= SMPS_CTRL_MODE_ON;
268 break;
269 case REGULATOR_MODE_IDLE:
270 reg |= SMPS_CTRL_MODE_ECO;
271 break;
272 case REGULATOR_MODE_FAST:
273 reg |= SMPS_CTRL_MODE_PWM;
274 break;
275 default:
276 return -EINVAL;
277 }
278 palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
279
280 return 0;
281}
282
283static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
284{
285 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
286 int id = rdev_get_id(dev);
287 unsigned int reg;
288
289 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
290 reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
291 reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
292
293 switch (reg) {
294 case SMPS_CTRL_MODE_ON:
295 return REGULATOR_MODE_NORMAL;
296 case SMPS_CTRL_MODE_ECO:
297 return REGULATOR_MODE_IDLE;
298 case SMPS_CTRL_MODE_PWM:
299 return REGULATOR_MODE_FAST;
300 }
301
302 return 0;
303}
304
305static int palmas_list_voltage_smps(struct regulator_dev *dev,
306 unsigned selector)
307{
308 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
309 int id = rdev_get_id(dev);
310 int mult = 1;
311
e5ce4208
GG		 312 /* Read the multiplier set in VSEL register to return
313 * the correct voltage.
314 */
315 if (pmic->range[id])
316 mult = 2;
317
ad02e846
AL		 318 if (selector == 0)
319 return 0;
320 else if (selector < 6)
321 return 500000 * mult;
322 else
323 /* Voltage is linear mapping starting from selector 6,
324 * volt = (0.49V + ((selector - 5) * 0.01V)) * RANGE
325 * RANGE is either x1 or x2
326 */
327 return (490000 + ((selector - 5) * 10000)) * mult;
e5ce4208
GG		 328}
329
330static int palmas_map_voltage_smps(struct regulator_dev *rdev,
331 int min_uV, int max_uV)
332{
8a165df7
AL		 333 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
334 int id = rdev_get_id(rdev);
e5ce4208
GG		 335 int ret, voltage;
336
8a165df7
AL		 337 if (min_uV == 0)
338 return 0;
339
340 if (pmic->range[id]) { /* RANGE is x2 */
341 if (min_uV < 1000000)
342 min_uV = 1000000;
ad02e846 343 ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 6;
8a165df7
AL		 344 } else { /* RANGE is x1 */
345 if (min_uV < 500000)
346 min_uV = 500000;
ad02e846 347 ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 6;
8a165df7 348 }
e5ce4208
GG		 349
350 /* Map back into a voltage to verify we're still in bounds */
351 voltage = palmas_list_voltage_smps(rdev, ret);
352 if (voltage < min_uV || voltage > max_uV)
353 return -EINVAL;
354
355 return ret;
356}
357
358static struct regulator_ops palmas_ops_smps = {
359 .is_enabled = palmas_is_enabled_smps,
360 .enable = palmas_enable_smps,
361 .disable = palmas_disable_smps,
362 .set_mode = palmas_set_mode_smps,
363 .get_mode = palmas_get_mode_smps,
bdc4baac
AL		 364 .get_voltage_sel = regulator_get_voltage_sel_regmap,
365 .set_voltage_sel = regulator_set_voltage_sel_regmap,
e5ce4208
GG		 366 .list_voltage = palmas_list_voltage_smps,
367 .map_voltage = palmas_map_voltage_smps,
368};
369
e5ce4208
GG		 370static struct regulator_ops palmas_ops_smps10 = {
371 .is_enabled = regulator_is_enabled_regmap,
372 .enable = regulator_enable_regmap,
373 .disable = regulator_disable_regmap,
374 .get_voltage_sel = regulator_get_voltage_sel_regmap,
375 .set_voltage_sel = regulator_set_voltage_sel_regmap,
8029a006
AL		 376 .list_voltage = regulator_list_voltage_linear,
377 .map_voltage = regulator_map_voltage_linear,
e5ce4208
GG		 378};
379
380static int palmas_is_enabled_ldo(struct regulator_dev *dev)
381{
382 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
383 int id = rdev_get_id(dev);
384 unsigned int reg;
385
386 palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
387
388 reg &= PALMAS_LDO1_CTRL_STATUS;
389
390 return !!(reg);
391}
392
e5ce4208
GG		 393static struct regulator_ops palmas_ops_ldo = {
394 .is_enabled = palmas_is_enabled_ldo,
395 .enable = regulator_enable_regmap,
396 .disable = regulator_disable_regmap,
4a247a96
AL		 397 .get_voltage_sel = regulator_get_voltage_sel_regmap,
398 .set_voltage_sel = regulator_set_voltage_sel_regmap,
9119ff6a
AL		 399 .list_voltage = regulator_list_voltage_linear,
400 .map_voltage = regulator_map_voltage_linear,
e5ce4208
GG		 401};
402
403/*
404 * setup the hardware based sleep configuration of the SMPS/LDO regulators
405 * from the platform data. This is different to the software based control
406 * supported by the regulator framework as it is controlled by toggling
407 * pins on the PMIC such as PREQ, SYSEN, ...
408 */
409static int palmas_smps_init(struct palmas *palmas, int id,
410 struct palmas_reg_init *reg_init)
411{
412 unsigned int reg;
413 unsigned int addr;
414 int ret;
415
416 addr = palmas_regs_info[id].ctrl_addr;
417
418 ret = palmas_smps_read(palmas, addr, &reg);
419 if (ret)
420 return ret;
421
fedd89b1
AL		 422 switch (id) {
423 case PALMAS_REG_SMPS10:
424 if (reg_init->mode_sleep) {
425 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
426 reg |= reg_init->mode_sleep <<
427 PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
428 }
429 break;
430 default:
e5ce4208
GG		 431 if (reg_init->warm_reset)
432 reg |= PALMAS_SMPS12_CTRL_WR_S;
433
434 if (reg_init->roof_floor)
435 reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
436
437 if (reg_init->mode_sleep) {
438 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
439 reg |= reg_init->mode_sleep <<
440 PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
441 }
e5ce4208 442 }
fedd89b1 443
e5ce4208
GG		 444 ret = palmas_smps_write(palmas, addr, reg);
445 if (ret)
446 return ret;
447
448 if (palmas_regs_info[id].tstep_addr && reg_init->tstep) {
449 addr = palmas_regs_info[id].tstep_addr;
450
451 reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK;
452
453 ret = palmas_smps_write(palmas, addr, reg);
454 if (ret)
455 return ret;
456 }
457
458 if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
459 addr = palmas_regs_info[id].vsel_addr;
460
461 reg = reg_init->vsel;
462
463 ret = palmas_smps_write(palmas, addr, reg);
464 if (ret)
465 return ret;
466 }
467
468
469 return 0;
470}
471
472static int palmas_ldo_init(struct palmas *palmas, int id,
473 struct palmas_reg_init *reg_init)
474{
475 unsigned int reg;
476 unsigned int addr;
477 int ret;
478
479 addr = palmas_regs_info[id].ctrl_addr;
480
2735daeb 481 ret = palmas_ldo_read(palmas, addr, &reg);
e5ce4208
GG		 482 if (ret)
483 return ret;
484
485 if (reg_init->warm_reset)
486 reg |= PALMAS_LDO1_CTRL_WR_S;
487
488 if (reg_init->mode_sleep)
489 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
490
2735daeb 491 ret = palmas_ldo_write(palmas, addr, reg);
e5ce4208
GG		 492 if (ret)
493 return ret;
494
495 return 0;
496}
497
a361cd9f
GG		 498static struct of_regulator_match palmas_matches[] = {
499 { .name = "smps12", },
500 { .name = "smps123", },
501 { .name = "smps3", },
502 { .name = "smps45", },
503 { .name = "smps457", },
504 { .name = "smps6", },
505 { .name = "smps7", },
506 { .name = "smps8", },
507 { .name = "smps9", },
508 { .name = "smps10", },
509 { .name = "ldo1", },
510 { .name = "ldo2", },
511 { .name = "ldo3", },
512 { .name = "ldo4", },
513 { .name = "ldo5", },
514 { .name = "ldo6", },
515 { .name = "ldo7", },
516 { .name = "ldo8", },
517 { .name = "ldo9", },
518 { .name = "ldoln", },
519 { .name = "ldousb", },
520};
521
a5023574 522static void palmas_dt_to_pdata(struct device *dev,
a361cd9f
GG		 523 struct device_node *node,
524 struct palmas_pmic_platform_data *pdata)
525{
526 struct device_node *regulators;
527 u32 prop;
528 int idx, ret;
529
530 regulators = of_find_node_by_name(node, "regulators");
531 if (!regulators) {
532 dev_info(dev, "regulator node not found\n");
533 return;
534 }
535
536 ret = of_regulator_match(dev, regulators, palmas_matches,
537 PALMAS_NUM_REGS);
538 if (ret < 0) {
539 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
540 return;
541 }
542
543 for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
544 if (!palmas_matches[idx].init_data ||
545 !palmas_matches[idx].of_node)
546 continue;
547
548 pdata->reg_data[idx] = palmas_matches[idx].init_data;
549
550 pdata->reg_init[idx] = devm_kzalloc(dev,
551 sizeof(struct palmas_reg_init), GFP_KERNEL);
552
553 ret = of_property_read_u32(palmas_matches[idx].of_node,
554 "ti,warm_reset", &prop);
555 if (!ret)
556 pdata->reg_init[idx]->warm_reset = prop;
557
558 ret = of_property_read_u32(palmas_matches[idx].of_node,
559 "ti,roof_floor", &prop);
560 if (!ret)
561 pdata->reg_init[idx]->roof_floor = prop;
562
563 ret = of_property_read_u32(palmas_matches[idx].of_node,
564 "ti,mode_sleep", &prop);
565 if (!ret)
566 pdata->reg_init[idx]->mode_sleep = prop;
567
568 ret = of_property_read_u32(palmas_matches[idx].of_node,
569 "ti,warm_reset", &prop);
570 if (!ret)
571 pdata->reg_init[idx]->warm_reset = prop;
572
573 ret = of_property_read_u32(palmas_matches[idx].of_node,
574 "ti,tstep", &prop);
575 if (!ret)
576 pdata->reg_init[idx]->tstep = prop;
577
578 ret = of_property_read_u32(palmas_matches[idx].of_node,
579 "ti,vsel", &prop);
580 if (!ret)
581 pdata->reg_init[idx]->vsel = prop;
582 }
583
584 ret = of_property_read_u32(node, "ti,ldo6_vibrator", &prop);
585 if (!ret)
586 pdata->ldo6_vibrator = prop;
587}
588
589
a5023574 590static int palmas_probe(struct platform_device *pdev)
e5ce4208
GG		 591{
592 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
593 struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data;
a361cd9f 594 struct device_node *node = pdev->dev.of_node;
e5ce4208
GG		 595 struct regulator_dev *rdev;
596 struct regulator_config config = { };
597 struct palmas_pmic *pmic;
598 struct palmas_reg_init *reg_init;
599 int id = 0, ret;
600 unsigned int addr, reg;
601
a361cd9f
GG		 602 if (node && !pdata) {
603 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
604
605 if (!pdata)
606 return -ENOMEM;
607
608 palmas_dt_to_pdata(&pdev->dev, node, pdata);
609 }
e5ce4208
GG		 610
611 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
612 if (!pmic)
613 return -ENOMEM;
614
615 pmic->dev = &pdev->dev;
616 pmic->palmas = palmas;
617 palmas->pmic = pmic;
618 platform_set_drvdata(pdev, pmic);
619
620 ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
621 if (ret)
1c9d2d71 622 return ret;
e5ce4208
GG		 623
624 if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
625 pmic->smps123 = 1;
626
627 if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
628 pmic->smps457 = 1;
629
630 config.regmap = palmas->regmap[REGULATOR_SLAVE];
631 config.dev = &pdev->dev;
632 config.driver_data = pmic;
633
634 for (id = 0; id < PALMAS_REG_LDO1; id++) {
635
636 /*
637 * Miss out regulators which are not available due
638 * to slaving configurations.
639 */
640 switch (id) {
641 case PALMAS_REG_SMPS12:
642 case PALMAS_REG_SMPS3:
643 if (pmic->smps123)
644 continue;
645 break;
646 case PALMAS_REG_SMPS123:
647 if (!pmic->smps123)
648 continue;
649 break;
650 case PALMAS_REG_SMPS45:
651 case PALMAS_REG_SMPS7:
652 if (pmic->smps457)
653 continue;
654 break;
655 case PALMAS_REG_SMPS457:
656 if (!pmic->smps457)
657 continue;
658 }
659
bdc4baac
AL		 660 /* Initialise sleep/init values from platform data */
661 if (pdata && pdata->reg_init[id]) {
662 reg_init = pdata->reg_init[id];
663 ret = palmas_smps_init(palmas, id, reg_init);
664 if (ret)
665 goto err_unregister_regulator;
666 }
667
e5ce4208
GG		 668 /* Register the regulators */
669 pmic->desc[id].name = palmas_regs_info[id].name;
670 pmic->desc[id].id = id;
671
fedd89b1
AL		 672 switch (id) {
673 case PALMAS_REG_SMPS10:
e5ce4208
GG		 674 pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
675 pmic->desc[id].ops = &palmas_ops_smps10;
12565b16
AL		 676 pmic->desc[id].vsel_reg =
677 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
678 PALMAS_SMPS10_CTRL);
e5ce4208 679 pmic->desc[id].vsel_mask = SMPS10_VSEL;
a68de074
GG		 680 pmic->desc[id].enable_reg =
681 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
682 PALMAS_SMPS10_STATUS);
e5ce4208 683 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
8029a006
AL		 684 pmic->desc[id].min_uV = 3750000;
685 pmic->desc[id].uV_step = 1250000;
fedd89b1
AL		 686 break;
687 default:
bdc4baac
AL		 688 /*
689 * Read and store the RANGE bit for later use
690 * This must be done before regulator is probed,
691 * otherwise we error in probe with unsupportable ranges.
692 */
e5ce4208
GG		 693 addr = palmas_regs_info[id].vsel_addr;
694
695 ret = palmas_smps_read(pmic->palmas, addr, &reg);
696 if (ret)
697 goto err_unregister_regulator;
698 if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
699 pmic->range[id] = 1;
bdc4baac
AL		 700
701 pmic->desc[id].ops = &palmas_ops_smps;
702 pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
703 pmic->desc[id].vsel_reg =
704 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
705 palmas_regs_info[id].vsel_addr);
706 pmic->desc[id].vsel_mask =
707 PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
e5ce4208
GG		 708 }
709
bdc4baac
AL		 710 pmic->desc[id].type = REGULATOR_VOLTAGE;
711 pmic->desc[id].owner = THIS_MODULE;
712
a361cd9f 713 if (pdata)
e5ce4208
GG		 714 config.init_data = pdata->reg_data[id];
715 else
716 config.init_data = NULL;
717
a361cd9f
GG		 718 config.of_node = palmas_matches[id].of_node;
719
e5ce4208
GG		 720 rdev = regulator_register(&pmic->desc[id], &config);
721 if (IS_ERR(rdev)) {
722 dev_err(&pdev->dev,
723 "failed to register %s regulator\n",
724 pdev->name);
725 ret = PTR_ERR(rdev);
726 goto err_unregister_regulator;
727 }
728
729 /* Save regulator for cleanup */
730 pmic->rdev[id] = rdev;
731 }
732
733 /* Start this loop from the id left from previous loop */
734 for (; id < PALMAS_NUM_REGS; id++) {
735
736 /* Miss out regulators which are not available due
737 * to alternate functions.
738 */
739
740 /* Register the regulators */
741 pmic->desc[id].name = palmas_regs_info[id].name;
742 pmic->desc[id].id = id;
743 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
744
745 pmic->desc[id].ops = &palmas_ops_ldo;
746
747 pmic->desc[id].type = REGULATOR_VOLTAGE;
748 pmic->desc[id].owner = THIS_MODULE;
9119ff6a
AL		 749 pmic->desc[id].min_uV = 900000;
750 pmic->desc[id].uV_step = 50000;
751 pmic->desc[id].linear_min_sel = 1;
4a247a96
AL		 752 pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
753 palmas_regs_info[id].vsel_addr);
754 pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
a68de074
GG		 755 pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
756 palmas_regs_info[id].ctrl_addr);
e5ce4208
GG		 757 pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
758
a361cd9f 759 if (pdata)
e5ce4208
GG		 760 config.init_data = pdata->reg_data[id];
761 else
762 config.init_data = NULL;
763
a361cd9f
GG		 764 config.of_node = palmas_matches[id].of_node;
765
e5ce4208
GG		 766 rdev = regulator_register(&pmic->desc[id], &config);
767 if (IS_ERR(rdev)) {
768 dev_err(&pdev->dev,
769 "failed to register %s regulator\n",
770 pdev->name);
771 ret = PTR_ERR(rdev);
772 goto err_unregister_regulator;
773 }
774
775 /* Save regulator for cleanup */
776 pmic->rdev[id] = rdev;
777
778 /* Initialise sleep/init values from platform data */
a361cd9f 779 if (pdata) {
e5ce4208
GG		 780 reg_init = pdata->reg_init[id];
781 if (reg_init) {
782 ret = palmas_ldo_init(palmas, id, reg_init);
1c9d2d71
AL		 783 if (ret) {
784 regulator_unregister(pmic->rdev[id]);
e5ce4208 785 goto err_unregister_regulator;
1c9d2d71 786 }
e5ce4208
GG		 787 }
788 }
789 }
790
791 return 0;
792
793err_unregister_regulator:
794 while (--id >= 0)
795 regulator_unregister(pmic->rdev[id]);
e5ce4208
GG		 796 return ret;
797}
798
8dc995f5 799static int palmas_remove(struct platform_device *pdev)
e5ce4208
GG		 800{
801 struct palmas_pmic *pmic = platform_get_drvdata(pdev);
802 int id;
803
804 for (id = 0; id < PALMAS_NUM_REGS; id++)
805 regulator_unregister(pmic->rdev[id]);
e5ce4208
GG		 806 return 0;
807}
808
a361cd9f
GG		 809static struct of_device_id __devinitdata of_palmas_match_tbl[] = {
810 { .compatible = "ti,palmas-pmic", },
811 { /* end */ }
812};
813
e5ce4208
GG		 814static struct platform_driver palmas_driver = {
815 .driver = {
816 .name = "palmas-pmic",
a361cd9f 817 .of_match_table = of_palmas_match_tbl,
e5ce4208
GG		 818 .owner = THIS_MODULE,
819 },
820 .probe = palmas_probe,
5eb9f2b9 821 .remove = palmas_remove,
e5ce4208
GG		 822};
823
824static int __init palmas_init(void)
825{
826 return platform_driver_register(&palmas_driver);
827}
828subsys_initcall(palmas_init);
829
830static void __exit palmas_exit(void)
831{
832 platform_driver_unregister(&palmas_driver);
833}
834module_exit(palmas_exit);
835
836MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
837MODULE_DESCRIPTION("Palmas voltage regulator driver");
838MODULE_LICENSE("GPL");
839MODULE_ALIAS("platform:palmas-pmic");
a361cd9f 840MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
Linux kernel - Deliverables
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