]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - drivers/regulator/palmas-regulator.c
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
regulator: palmas: Return raw register values as the selectors in [get|set]_voltage_sel
[mirror_ubuntu-bionic-kernel.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_get_voltage_smps_sel(struct regulator_dev *dev)
331{
332 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
333 int id = rdev_get_id(dev);
334 int selector;
335 unsigned int reg;
336 unsigned int addr;
337
338 addr = palmas_regs_info[id].vsel_addr;
339
340 palmas_smps_read(pmic->palmas, addr, &reg);
341
342 selector = reg & PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
343
e5ce4208
GG		 344 return selector;
345}
346
347static int palmas_set_voltage_smps_sel(struct regulator_dev *dev,
348 unsigned selector)
349{
350 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
351 int id = rdev_get_id(dev);
ad02e846 352 unsigned int reg, addr;
e5ce4208
GG		 353
354 addr = palmas_regs_info[id].vsel_addr;
ad02e846 355 reg = selector;
e5ce4208
GG		 356
357 /* Make sure we don't change the value of RANGE */
358 if (pmic->range[id])
359 reg |= PALMAS_SMPS12_VOLTAGE_RANGE;
360
e5ce4208
GG		 361 palmas_smps_write(pmic->palmas, addr, reg);
362
363 return 0;
364}
365
366static int palmas_map_voltage_smps(struct regulator_dev *rdev,
367 int min_uV, int max_uV)
368{
8a165df7
AL		 369 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
370 int id = rdev_get_id(rdev);
e5ce4208
GG		 371 int ret, voltage;
372
8a165df7
AL		 373 if (min_uV == 0)
374 return 0;
375
376 if (pmic->range[id]) { /* RANGE is x2 */
377 if (min_uV < 1000000)
378 min_uV = 1000000;
ad02e846 379 ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 6;
8a165df7
AL		 380 } else { /* RANGE is x1 */
381 if (min_uV < 500000)
382 min_uV = 500000;
ad02e846 383 ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 6;
8a165df7 384 }
e5ce4208
GG		 385
386 /* Map back into a voltage to verify we're still in bounds */
387 voltage = palmas_list_voltage_smps(rdev, ret);
388 if (voltage < min_uV || voltage > max_uV)
389 return -EINVAL;
390
391 return ret;
392}
393
394static struct regulator_ops palmas_ops_smps = {
395 .is_enabled = palmas_is_enabled_smps,
396 .enable = palmas_enable_smps,
397 .disable = palmas_disable_smps,
398 .set_mode = palmas_set_mode_smps,
399 .get_mode = palmas_get_mode_smps,
400 .get_voltage_sel = palmas_get_voltage_smps_sel,
401 .set_voltage_sel = palmas_set_voltage_smps_sel,
402 .list_voltage = palmas_list_voltage_smps,
403 .map_voltage = palmas_map_voltage_smps,
404};
405
e5ce4208
GG		 406static struct regulator_ops palmas_ops_smps10 = {
407 .is_enabled = regulator_is_enabled_regmap,
408 .enable = regulator_enable_regmap,
409 .disable = regulator_disable_regmap,
410 .get_voltage_sel = regulator_get_voltage_sel_regmap,
411 .set_voltage_sel = regulator_set_voltage_sel_regmap,
8029a006
AL		 412 .list_voltage = regulator_list_voltage_linear,
413 .map_voltage = regulator_map_voltage_linear,
e5ce4208
GG		 414};
415
416static int palmas_is_enabled_ldo(struct regulator_dev *dev)
417{
418 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
419 int id = rdev_get_id(dev);
420 unsigned int reg;
421
422 palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
423
424 reg &= PALMAS_LDO1_CTRL_STATUS;
425
426 return !!(reg);
427}
428
429static int palmas_list_voltage_ldo(struct regulator_dev *dev,
430 unsigned selector)
431{
432 if (!selector)
433 return 0;
434
435 /* voltage is 0.85V + (selector * 0.05v) */
436 return 850000 + (selector * 50000);
437}
438
e5ce4208
GG		 439static int palmas_map_voltage_ldo(struct regulator_dev *rdev,
440 int min_uV, int max_uV)
441{
442 int ret, voltage;
443
a5f8ae21
AL		 444 if (min_uV == 0)
445 return 0;
446
447 if (min_uV < 900000)
448 min_uV = 900000;
449 ret = DIV_ROUND_UP(min_uV - 900000, 50000) + 1;
e5ce4208
GG		 450
451 /* Map back into a voltage to verify we're still in bounds */
452 voltage = palmas_list_voltage_ldo(rdev, ret);
453 if (voltage < min_uV || voltage > max_uV)
454 return -EINVAL;
455
456 return ret;
457}
458
459static struct regulator_ops palmas_ops_ldo = {
460 .is_enabled = palmas_is_enabled_ldo,
461 .enable = regulator_enable_regmap,
462 .disable = regulator_disable_regmap,
4a247a96
AL		 463 .get_voltage_sel = regulator_get_voltage_sel_regmap,
464 .set_voltage_sel = regulator_set_voltage_sel_regmap,
e5ce4208
GG		 465 .list_voltage = palmas_list_voltage_ldo,
466 .map_voltage = palmas_map_voltage_ldo,
467};
468
469/*
470 * setup the hardware based sleep configuration of the SMPS/LDO regulators
471 * from the platform data. This is different to the software based control
472 * supported by the regulator framework as it is controlled by toggling
473 * pins on the PMIC such as PREQ, SYSEN, ...
474 */
475static int palmas_smps_init(struct palmas *palmas, int id,
476 struct palmas_reg_init *reg_init)
477{
478 unsigned int reg;
479 unsigned int addr;
480 int ret;
481
482 addr = palmas_regs_info[id].ctrl_addr;
483
484 ret = palmas_smps_read(palmas, addr, &reg);
485 if (ret)
486 return ret;
487
fedd89b1
AL		 488 switch (id) {
489 case PALMAS_REG_SMPS10:
490 if (reg_init->mode_sleep) {
491 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
492 reg |= reg_init->mode_sleep <<
493 PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
494 }
495 break;
496 default:
e5ce4208
GG		 497 if (reg_init->warm_reset)
498 reg |= PALMAS_SMPS12_CTRL_WR_S;
499
500 if (reg_init->roof_floor)
501 reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
502
503 if (reg_init->mode_sleep) {
504 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
505 reg |= reg_init->mode_sleep <<
506 PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
507 }
e5ce4208 508 }
fedd89b1 509
e5ce4208
GG		 510 ret = palmas_smps_write(palmas, addr, reg);
511 if (ret)
512 return ret;
513
514 if (palmas_regs_info[id].tstep_addr && reg_init->tstep) {
515 addr = palmas_regs_info[id].tstep_addr;
516
517 reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK;
518
519 ret = palmas_smps_write(palmas, addr, reg);
520 if (ret)
521 return ret;
522 }
523
524 if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
525 addr = palmas_regs_info[id].vsel_addr;
526
527 reg = reg_init->vsel;
528
529 ret = palmas_smps_write(palmas, addr, reg);
530 if (ret)
531 return ret;
532 }
533
534
535 return 0;
536}
537
538static int palmas_ldo_init(struct palmas *palmas, int id,
539 struct palmas_reg_init *reg_init)
540{
541 unsigned int reg;
542 unsigned int addr;
543 int ret;
544
545 addr = palmas_regs_info[id].ctrl_addr;
546
2735daeb 547 ret = palmas_ldo_read(palmas, addr, &reg);
e5ce4208
GG		 548 if (ret)
549 return ret;
550
551 if (reg_init->warm_reset)
552 reg |= PALMAS_LDO1_CTRL_WR_S;
553
554 if (reg_init->mode_sleep)
555 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
556
2735daeb 557 ret = palmas_ldo_write(palmas, addr, reg);
e5ce4208
GG		 558 if (ret)
559 return ret;
560
561 return 0;
562}
563
a361cd9f
GG		 564static struct of_regulator_match palmas_matches[] = {
565 { .name = "smps12", },
566 { .name = "smps123", },
567 { .name = "smps3", },
568 { .name = "smps45", },
569 { .name = "smps457", },
570 { .name = "smps6", },
571 { .name = "smps7", },
572 { .name = "smps8", },
573 { .name = "smps9", },
574 { .name = "smps10", },
575 { .name = "ldo1", },
576 { .name = "ldo2", },
577 { .name = "ldo3", },
578 { .name = "ldo4", },
579 { .name = "ldo5", },
580 { .name = "ldo6", },
581 { .name = "ldo7", },
582 { .name = "ldo8", },
583 { .name = "ldo9", },
584 { .name = "ldoln", },
585 { .name = "ldousb", },
586};
587
588static void __devinit palmas_dt_to_pdata(struct device *dev,
589 struct device_node *node,
590 struct palmas_pmic_platform_data *pdata)
591{
592 struct device_node *regulators;
593 u32 prop;
594 int idx, ret;
595
596 regulators = of_find_node_by_name(node, "regulators");
597 if (!regulators) {
598 dev_info(dev, "regulator node not found\n");
599 return;
600 }
601
602 ret = of_regulator_match(dev, regulators, palmas_matches,
603 PALMAS_NUM_REGS);
604 if (ret < 0) {
605 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
606 return;
607 }
608
609 for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
610 if (!palmas_matches[idx].init_data ||
611 !palmas_matches[idx].of_node)
612 continue;
613
614 pdata->reg_data[idx] = palmas_matches[idx].init_data;
615
616 pdata->reg_init[idx] = devm_kzalloc(dev,
617 sizeof(struct palmas_reg_init), GFP_KERNEL);
618
619 ret = of_property_read_u32(palmas_matches[idx].of_node,
620 "ti,warm_reset", &prop);
621 if (!ret)
622 pdata->reg_init[idx]->warm_reset = prop;
623
624 ret = of_property_read_u32(palmas_matches[idx].of_node,
625 "ti,roof_floor", &prop);
626 if (!ret)
627 pdata->reg_init[idx]->roof_floor = prop;
628
629 ret = of_property_read_u32(palmas_matches[idx].of_node,
630 "ti,mode_sleep", &prop);
631 if (!ret)
632 pdata->reg_init[idx]->mode_sleep = prop;
633
634 ret = of_property_read_u32(palmas_matches[idx].of_node,
635 "ti,warm_reset", &prop);
636 if (!ret)
637 pdata->reg_init[idx]->warm_reset = prop;
638
639 ret = of_property_read_u32(palmas_matches[idx].of_node,
640 "ti,tstep", &prop);
641 if (!ret)
642 pdata->reg_init[idx]->tstep = prop;
643
644 ret = of_property_read_u32(palmas_matches[idx].of_node,
645 "ti,vsel", &prop);
646 if (!ret)
647 pdata->reg_init[idx]->vsel = prop;
648 }
649
650 ret = of_property_read_u32(node, "ti,ldo6_vibrator", &prop);
651 if (!ret)
652 pdata->ldo6_vibrator = prop;
653}
654
655
e5ce4208
GG		 656static __devinit int palmas_probe(struct platform_device *pdev)
657{
658 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
659 struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data;
a361cd9f 660 struct device_node *node = pdev->dev.of_node;
e5ce4208
GG		 661 struct regulator_dev *rdev;
662 struct regulator_config config = { };
663 struct palmas_pmic *pmic;
664 struct palmas_reg_init *reg_init;
665 int id = 0, ret;
666 unsigned int addr, reg;
667
a361cd9f
GG		 668 if (node && !pdata) {
669 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
670
671 if (!pdata)
672 return -ENOMEM;
673
674 palmas_dt_to_pdata(&pdev->dev, node, pdata);
675 }
e5ce4208
GG		 676
677 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
678 if (!pmic)
679 return -ENOMEM;
680
681 pmic->dev = &pdev->dev;
682 pmic->palmas = palmas;
683 palmas->pmic = pmic;
684 platform_set_drvdata(pdev, pmic);
685
686 ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
687 if (ret)
1c9d2d71 688 return ret;
e5ce4208
GG		 689
690 if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
691 pmic->smps123 = 1;
692
693 if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
694 pmic->smps457 = 1;
695
696 config.regmap = palmas->regmap[REGULATOR_SLAVE];
697 config.dev = &pdev->dev;
698 config.driver_data = pmic;
699
700 for (id = 0; id < PALMAS_REG_LDO1; id++) {
701
702 /*
703 * Miss out regulators which are not available due
704 * to slaving configurations.
705 */
706 switch (id) {
707 case PALMAS_REG_SMPS12:
708 case PALMAS_REG_SMPS3:
709 if (pmic->smps123)
710 continue;
711 break;
712 case PALMAS_REG_SMPS123:
713 if (!pmic->smps123)
714 continue;
715 break;
716 case PALMAS_REG_SMPS45:
717 case PALMAS_REG_SMPS7:
718 if (pmic->smps457)
719 continue;
720 break;
721 case PALMAS_REG_SMPS457:
722 if (!pmic->smps457)
723 continue;
724 }
725
726 /* Register the regulators */
727 pmic->desc[id].name = palmas_regs_info[id].name;
728 pmic->desc[id].id = id;
729
fedd89b1
AL		 730 switch (id) {
731 case PALMAS_REG_SMPS10:
e5ce4208
GG		 732 pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
733 pmic->desc[id].ops = &palmas_ops_smps10;
12565b16
AL		 734 pmic->desc[id].vsel_reg =
735 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
736 PALMAS_SMPS10_CTRL);
e5ce4208 737 pmic->desc[id].vsel_mask = SMPS10_VSEL;
a68de074
GG		 738 pmic->desc[id].enable_reg =
739 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
740 PALMAS_SMPS10_STATUS);
e5ce4208 741 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
8029a006
AL		 742 pmic->desc[id].min_uV = 3750000;
743 pmic->desc[id].uV_step = 1250000;
fedd89b1
AL		 744 break;
745 default:
746 pmic->desc[id].ops = &palmas_ops_smps;
747 pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
e5ce4208
GG		 748 }
749
750 pmic->desc[id].type = REGULATOR_VOLTAGE;
751 pmic->desc[id].owner = THIS_MODULE;
752
753 /* Initialise sleep/init values from platform data */
a361cd9f 754 if (pdata) {
e5ce4208
GG		 755 reg_init = pdata->reg_init[id];
756 if (reg_init) {
757 ret = palmas_smps_init(palmas, id, reg_init);
758 if (ret)
759 goto err_unregister_regulator;
760 }
761 }
762
763 /*
764 * read and store the RANGE bit for later use
765 * This must be done before regulator is probed otherwise
766 * we error in probe with unsuportable ranges.
767 */
768 if (id != PALMAS_REG_SMPS10) {
769 addr = palmas_regs_info[id].vsel_addr;
770
771 ret = palmas_smps_read(pmic->palmas, addr, &reg);
772 if (ret)
773 goto err_unregister_regulator;
774 if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
775 pmic->range[id] = 1;
776 }
777
a361cd9f 778 if (pdata)
e5ce4208
GG		 779 config.init_data = pdata->reg_data[id];
780 else
781 config.init_data = NULL;
782
a361cd9f
GG		 783 config.of_node = palmas_matches[id].of_node;
784
e5ce4208
GG		 785 rdev = regulator_register(&pmic->desc[id], &config);
786 if (IS_ERR(rdev)) {
787 dev_err(&pdev->dev,
788 "failed to register %s regulator\n",
789 pdev->name);
790 ret = PTR_ERR(rdev);
791 goto err_unregister_regulator;
792 }
793
794 /* Save regulator for cleanup */
795 pmic->rdev[id] = rdev;
796 }
797
798 /* Start this loop from the id left from previous loop */
799 for (; id < PALMAS_NUM_REGS; id++) {
800
801 /* Miss out regulators which are not available due
802 * to alternate functions.
803 */
804
805 /* Register the regulators */
806 pmic->desc[id].name = palmas_regs_info[id].name;
807 pmic->desc[id].id = id;
808 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
809
810 pmic->desc[id].ops = &palmas_ops_ldo;
811
812 pmic->desc[id].type = REGULATOR_VOLTAGE;
813 pmic->desc[id].owner = THIS_MODULE;
4a247a96
AL		 814 pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
815 palmas_regs_info[id].vsel_addr);
816 pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
a68de074
GG		 817 pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
818 palmas_regs_info[id].ctrl_addr);
e5ce4208
GG		 819 pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
820
a361cd9f 821 if (pdata)
e5ce4208
GG		 822 config.init_data = pdata->reg_data[id];
823 else
824 config.init_data = NULL;
825
a361cd9f
GG		 826 config.of_node = palmas_matches[id].of_node;
827
e5ce4208
GG		 828 rdev = regulator_register(&pmic->desc[id], &config);
829 if (IS_ERR(rdev)) {
830 dev_err(&pdev->dev,
831 "failed to register %s regulator\n",
832 pdev->name);
833 ret = PTR_ERR(rdev);
834 goto err_unregister_regulator;
835 }
836
837 /* Save regulator for cleanup */
838 pmic->rdev[id] = rdev;
839
840 /* Initialise sleep/init values from platform data */
a361cd9f 841 if (pdata) {
e5ce4208
GG		 842 reg_init = pdata->reg_init[id];
843 if (reg_init) {
844 ret = palmas_ldo_init(palmas, id, reg_init);
1c9d2d71
AL		 845 if (ret) {
846 regulator_unregister(pmic->rdev[id]);
e5ce4208 847 goto err_unregister_regulator;
1c9d2d71 848 }
e5ce4208
GG		 849 }
850 }
851 }
852
853 return 0;
854
855err_unregister_regulator:
856 while (--id >= 0)
857 regulator_unregister(pmic->rdev[id]);
e5ce4208
GG		 858 return ret;
859}
860
861static int __devexit palmas_remove(struct platform_device *pdev)
862{
863 struct palmas_pmic *pmic = platform_get_drvdata(pdev);
864 int id;
865
866 for (id = 0; id < PALMAS_NUM_REGS; id++)
867 regulator_unregister(pmic->rdev[id]);
e5ce4208
GG		 868 return 0;
869}
870
a361cd9f
GG		 871static struct of_device_id __devinitdata of_palmas_match_tbl[] = {
872 { .compatible = "ti,palmas-pmic", },
873 { /* end */ }
874};
875
e5ce4208
GG		 876static struct platform_driver palmas_driver = {
877 .driver = {
878 .name = "palmas-pmic",
a361cd9f 879 .of_match_table = of_palmas_match_tbl,
e5ce4208
GG		 880 .owner = THIS_MODULE,
881 },
882 .probe = palmas_probe,
883 .remove = __devexit_p(palmas_remove),
884};
885
886static int __init palmas_init(void)
887{
888 return platform_driver_register(&palmas_driver);
889}
890subsys_initcall(palmas_init);
891
892static void __exit palmas_exit(void)
893{
894 platform_driver_unregister(&palmas_driver);
895}
896module_exit(palmas_exit);
897
898MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
899MODULE_DESCRIPTION("Palmas voltage regulator driver");
900MODULE_LICENSE("GPL");
901MODULE_ALIAS("platform:palmas-pmic");
a361cd9f 902MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
ubuntu-bionic-kernel mirror