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regulator: palmas: Use linear_min_sel and regulator_[map|list]_voltage_linear
[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
312 if (!selector)
313 return 0;
314
315 /* Read the multiplier set in VSEL register to return
316 * the correct voltage.
317 */
318 if (pmic->range[id])
319 mult = 2;
320
321 /* Voltage is (0.49V + (selector * 0.01V)) * RANGE
322 * as defined in data sheet. RANGE is either x1 or x2
323 */
324 return (490000 + (selector * 10000)) * mult;
325}
326
327static int palmas_get_voltage_smps_sel(struct regulator_dev *dev)
328{
329 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
330 int id = rdev_get_id(dev);
331 int selector;
332 unsigned int reg;
333 unsigned int addr;
334
335 addr = palmas_regs_info[id].vsel_addr;
336
337 palmas_smps_read(pmic->palmas, addr, &reg);
338
339 selector = reg & PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
340
341 /* Adjust selector to match list_voltage ranges */
342 if ((selector > 0) && (selector < 6))
343 selector = 6;
344 if (!selector)
345 selector = 5;
346 if (selector > 121)
347 selector = 121;
348 selector -= 5;
349
350 return selector;
351}
352
353static int palmas_set_voltage_smps_sel(struct regulator_dev *dev,
354 unsigned selector)
355{
356 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
357 int id = rdev_get_id(dev);
358 unsigned int reg = 0;
359 unsigned int addr;
360
361 addr = palmas_regs_info[id].vsel_addr;
362
363 /* Make sure we don't change the value of RANGE */
364 if (pmic->range[id])
365 reg |= PALMAS_SMPS12_VOLTAGE_RANGE;
366
367 /* Adjust the linux selector into range used in VSEL register */
368 if (selector)
369 reg |= selector + 5;
370
371 palmas_smps_write(pmic->palmas, addr, reg);
372
373 return 0;
374}
375
376static int palmas_map_voltage_smps(struct regulator_dev *rdev,
377 int min_uV, int max_uV)
378{
8a165df7
AL		 379 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
380 int id = rdev_get_id(rdev);
e5ce4208
GG		 381 int ret, voltage;
382
8a165df7
AL		 383 if (min_uV == 0)
384 return 0;
385
386 if (pmic->range[id]) { /* RANGE is x2 */
387 if (min_uV < 1000000)
388 min_uV = 1000000;
389 ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 1;
390 } else { /* RANGE is x1 */
391 if (min_uV < 500000)
392 min_uV = 500000;
393 ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 1;
394 }
e5ce4208
GG		 395
396 /* Map back into a voltage to verify we're still in bounds */
397 voltage = palmas_list_voltage_smps(rdev, ret);
398 if (voltage < min_uV || voltage > max_uV)
399 return -EINVAL;
400
401 return ret;
402}
403
404static struct regulator_ops palmas_ops_smps = {
405 .is_enabled = palmas_is_enabled_smps,
406 .enable = palmas_enable_smps,
407 .disable = palmas_disable_smps,
408 .set_mode = palmas_set_mode_smps,
409 .get_mode = palmas_get_mode_smps,
410 .get_voltage_sel = palmas_get_voltage_smps_sel,
411 .set_voltage_sel = palmas_set_voltage_smps_sel,
412 .list_voltage = palmas_list_voltage_smps,
413 .map_voltage = palmas_map_voltage_smps,
414};
415
e5ce4208
GG		 416static struct regulator_ops palmas_ops_smps10 = {
417 .is_enabled = regulator_is_enabled_regmap,
418 .enable = regulator_enable_regmap,
419 .disable = regulator_disable_regmap,
420 .get_voltage_sel = regulator_get_voltage_sel_regmap,
421 .set_voltage_sel = regulator_set_voltage_sel_regmap,
8029a006
AL		 422 .list_voltage = regulator_list_voltage_linear,
423 .map_voltage = regulator_map_voltage_linear,
e5ce4208
GG		 424};
425
426static int palmas_is_enabled_ldo(struct regulator_dev *dev)
427{
428 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
429 int id = rdev_get_id(dev);
430 unsigned int reg;
431
432 palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, &reg);
433
434 reg &= PALMAS_LDO1_CTRL_STATUS;
435
436 return !!(reg);
437}
438
e5ce4208
GG		 439static struct regulator_ops palmas_ops_ldo = {
440 .is_enabled = palmas_is_enabled_ldo,
441 .enable = regulator_enable_regmap,
442 .disable = regulator_disable_regmap,
4a247a96
AL		 443 .get_voltage_sel = regulator_get_voltage_sel_regmap,
444 .set_voltage_sel = regulator_set_voltage_sel_regmap,
9119ff6a
AL		 445 .list_voltage = regulator_list_voltage_linear,
446 .map_voltage = regulator_map_voltage_linear,
e5ce4208
GG		 447};
448
449/*
450 * setup the hardware based sleep configuration of the SMPS/LDO regulators
451 * from the platform data. This is different to the software based control
452 * supported by the regulator framework as it is controlled by toggling
453 * pins on the PMIC such as PREQ, SYSEN, ...
454 */
455static int palmas_smps_init(struct palmas *palmas, int id,
456 struct palmas_reg_init *reg_init)
457{
458 unsigned int reg;
459 unsigned int addr;
460 int ret;
461
462 addr = palmas_regs_info[id].ctrl_addr;
463
464 ret = palmas_smps_read(palmas, addr, &reg);
465 if (ret)
466 return ret;
467
fedd89b1
AL		 468 switch (id) {
469 case PALMAS_REG_SMPS10:
470 if (reg_init->mode_sleep) {
471 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
472 reg |= reg_init->mode_sleep <<
473 PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
474 }
475 break;
476 default:
e5ce4208
GG		 477 if (reg_init->warm_reset)
478 reg |= PALMAS_SMPS12_CTRL_WR_S;
479
480 if (reg_init->roof_floor)
481 reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
482
483 if (reg_init->mode_sleep) {
484 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
485 reg |= reg_init->mode_sleep <<
486 PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
487 }
e5ce4208 488 }
fedd89b1 489
e5ce4208
GG		 490 ret = palmas_smps_write(palmas, addr, reg);
491 if (ret)
492 return ret;
493
494 if (palmas_regs_info[id].tstep_addr && reg_init->tstep) {
495 addr = palmas_regs_info[id].tstep_addr;
496
497 reg = reg_init->tstep & PALMAS_SMPS12_TSTEP_TSTEP_MASK;
498
499 ret = palmas_smps_write(palmas, addr, reg);
500 if (ret)
501 return ret;
502 }
503
504 if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
505 addr = palmas_regs_info[id].vsel_addr;
506
507 reg = reg_init->vsel;
508
509 ret = palmas_smps_write(palmas, addr, reg);
510 if (ret)
511 return ret;
512 }
513
514
515 return 0;
516}
517
518static int palmas_ldo_init(struct palmas *palmas, int id,
519 struct palmas_reg_init *reg_init)
520{
521 unsigned int reg;
522 unsigned int addr;
523 int ret;
524
525 addr = palmas_regs_info[id].ctrl_addr;
526
2735daeb 527 ret = palmas_ldo_read(palmas, addr, &reg);
e5ce4208
GG		 528 if (ret)
529 return ret;
530
531 if (reg_init->warm_reset)
532 reg |= PALMAS_LDO1_CTRL_WR_S;
533
534 if (reg_init->mode_sleep)
535 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
536
2735daeb 537 ret = palmas_ldo_write(palmas, addr, reg);
e5ce4208
GG		 538 if (ret)
539 return ret;
540
541 return 0;
542}
543
a361cd9f
GG		 544static struct of_regulator_match palmas_matches[] = {
545 { .name = "smps12", },
546 { .name = "smps123", },
547 { .name = "smps3", },
548 { .name = "smps45", },
549 { .name = "smps457", },
550 { .name = "smps6", },
551 { .name = "smps7", },
552 { .name = "smps8", },
553 { .name = "smps9", },
554 { .name = "smps10", },
555 { .name = "ldo1", },
556 { .name = "ldo2", },
557 { .name = "ldo3", },
558 { .name = "ldo4", },
559 { .name = "ldo5", },
560 { .name = "ldo6", },
561 { .name = "ldo7", },
562 { .name = "ldo8", },
563 { .name = "ldo9", },
564 { .name = "ldoln", },
565 { .name = "ldousb", },
566};
567
568static void __devinit palmas_dt_to_pdata(struct device *dev,
569 struct device_node *node,
570 struct palmas_pmic_platform_data *pdata)
571{
572 struct device_node *regulators;
573 u32 prop;
574 int idx, ret;
575
576 regulators = of_find_node_by_name(node, "regulators");
577 if (!regulators) {
578 dev_info(dev, "regulator node not found\n");
579 return;
580 }
581
582 ret = of_regulator_match(dev, regulators, palmas_matches,
583 PALMAS_NUM_REGS);
584 if (ret < 0) {
585 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
586 return;
587 }
588
589 for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
590 if (!palmas_matches[idx].init_data ||
591 !palmas_matches[idx].of_node)
592 continue;
593
594 pdata->reg_data[idx] = palmas_matches[idx].init_data;
595
596 pdata->reg_init[idx] = devm_kzalloc(dev,
597 sizeof(struct palmas_reg_init), GFP_KERNEL);
598
599 ret = of_property_read_u32(palmas_matches[idx].of_node,
600 "ti,warm_reset", &prop);
601 if (!ret)
602 pdata->reg_init[idx]->warm_reset = prop;
603
604 ret = of_property_read_u32(palmas_matches[idx].of_node,
605 "ti,roof_floor", &prop);
606 if (!ret)
607 pdata->reg_init[idx]->roof_floor = prop;
608
609 ret = of_property_read_u32(palmas_matches[idx].of_node,
610 "ti,mode_sleep", &prop);
611 if (!ret)
612 pdata->reg_init[idx]->mode_sleep = prop;
613
614 ret = of_property_read_u32(palmas_matches[idx].of_node,
615 "ti,warm_reset", &prop);
616 if (!ret)
617 pdata->reg_init[idx]->warm_reset = prop;
618
619 ret = of_property_read_u32(palmas_matches[idx].of_node,
620 "ti,tstep", &prop);
621 if (!ret)
622 pdata->reg_init[idx]->tstep = prop;
623
624 ret = of_property_read_u32(palmas_matches[idx].of_node,
625 "ti,vsel", &prop);
626 if (!ret)
627 pdata->reg_init[idx]->vsel = prop;
628 }
629
630 ret = of_property_read_u32(node, "ti,ldo6_vibrator", &prop);
631 if (!ret)
632 pdata->ldo6_vibrator = prop;
633}
634
635
e5ce4208
GG		 636static __devinit int palmas_probe(struct platform_device *pdev)
637{
638 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
639 struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data;
a361cd9f 640 struct device_node *node = pdev->dev.of_node;
e5ce4208
GG		 641 struct regulator_dev *rdev;
642 struct regulator_config config = { };
643 struct palmas_pmic *pmic;
644 struct palmas_reg_init *reg_init;
645 int id = 0, ret;
646 unsigned int addr, reg;
647
a361cd9f
GG		 648 if (node && !pdata) {
649 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
650
651 if (!pdata)
652 return -ENOMEM;
653
654 palmas_dt_to_pdata(&pdev->dev, node, pdata);
655 }
e5ce4208
GG		 656
657 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
658 if (!pmic)
659 return -ENOMEM;
660
661 pmic->dev = &pdev->dev;
662 pmic->palmas = palmas;
663 palmas->pmic = pmic;
664 platform_set_drvdata(pdev, pmic);
665
666 ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
667 if (ret)
1c9d2d71 668 return ret;
e5ce4208
GG		 669
670 if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
671 pmic->smps123 = 1;
672
673 if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
674 pmic->smps457 = 1;
675
676 config.regmap = palmas->regmap[REGULATOR_SLAVE];
677 config.dev = &pdev->dev;
678 config.driver_data = pmic;
679
680 for (id = 0; id < PALMAS_REG_LDO1; id++) {
681
682 /*
683 * Miss out regulators which are not available due
684 * to slaving configurations.
685 */
686 switch (id) {
687 case PALMAS_REG_SMPS12:
688 case PALMAS_REG_SMPS3:
689 if (pmic->smps123)
690 continue;
691 break;
692 case PALMAS_REG_SMPS123:
693 if (!pmic->smps123)
694 continue;
695 break;
696 case PALMAS_REG_SMPS45:
697 case PALMAS_REG_SMPS7:
698 if (pmic->smps457)
699 continue;
700 break;
701 case PALMAS_REG_SMPS457:
702 if (!pmic->smps457)
703 continue;
704 }
705
706 /* Register the regulators */
707 pmic->desc[id].name = palmas_regs_info[id].name;
708 pmic->desc[id].id = id;
709
fedd89b1
AL		 710 switch (id) {
711 case PALMAS_REG_SMPS10:
e5ce4208
GG		 712 pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
713 pmic->desc[id].ops = &palmas_ops_smps10;
12565b16
AL		 714 pmic->desc[id].vsel_reg =
715 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
716 PALMAS_SMPS10_CTRL);
e5ce4208 717 pmic->desc[id].vsel_mask = SMPS10_VSEL;
a68de074
GG		 718 pmic->desc[id].enable_reg =
719 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
720 PALMAS_SMPS10_STATUS);
e5ce4208 721 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
8029a006
AL		 722 pmic->desc[id].min_uV = 3750000;
723 pmic->desc[id].uV_step = 1250000;
fedd89b1
AL		 724 break;
725 default:
726 pmic->desc[id].ops = &palmas_ops_smps;
727 pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
e5ce4208
GG		 728 }
729
730 pmic->desc[id].type = REGULATOR_VOLTAGE;
731 pmic->desc[id].owner = THIS_MODULE;
732
733 /* Initialise sleep/init values from platform data */
a361cd9f 734 if (pdata) {
e5ce4208
GG		 735 reg_init = pdata->reg_init[id];
736 if (reg_init) {
737 ret = palmas_smps_init(palmas, id, reg_init);
738 if (ret)
739 goto err_unregister_regulator;
740 }
741 }
742
743 /*
744 * read and store the RANGE bit for later use
745 * This must be done before regulator is probed otherwise
746 * we error in probe with unsuportable ranges.
747 */
748 if (id != PALMAS_REG_SMPS10) {
749 addr = palmas_regs_info[id].vsel_addr;
750
751 ret = palmas_smps_read(pmic->palmas, addr, &reg);
752 if (ret)
753 goto err_unregister_regulator;
754 if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
755 pmic->range[id] = 1;
756 }
757
a361cd9f 758 if (pdata)
e5ce4208
GG		 759 config.init_data = pdata->reg_data[id];
760 else
761 config.init_data = NULL;
762
a361cd9f
GG		 763 config.of_node = palmas_matches[id].of_node;
764
e5ce4208
GG		 765 rdev = regulator_register(&pmic->desc[id], &config);
766 if (IS_ERR(rdev)) {
767 dev_err(&pdev->dev,
768 "failed to register %s regulator\n",
769 pdev->name);
770 ret = PTR_ERR(rdev);
771 goto err_unregister_regulator;
772 }
773
774 /* Save regulator for cleanup */
775 pmic->rdev[id] = rdev;
776 }
777
778 /* Start this loop from the id left from previous loop */
779 for (; id < PALMAS_NUM_REGS; id++) {
780
781 /* Miss out regulators which are not available due
782 * to alternate functions.
783 */
784
785 /* Register the regulators */
786 pmic->desc[id].name = palmas_regs_info[id].name;
787 pmic->desc[id].id = id;
788 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
789
790 pmic->desc[id].ops = &palmas_ops_ldo;
791
792 pmic->desc[id].type = REGULATOR_VOLTAGE;
793 pmic->desc[id].owner = THIS_MODULE;
9119ff6a
AL		 794 pmic->desc[id].min_uV = 900000;
795 pmic->desc[id].uV_step = 50000;
796 pmic->desc[id].linear_min_sel = 1;
4a247a96
AL		 797 pmic->desc[id].vsel_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
798 palmas_regs_info[id].vsel_addr);
799 pmic->desc[id].vsel_mask = PALMAS_LDO1_VOLTAGE_VSEL_MASK;
a68de074
GG		 800 pmic->desc[id].enable_reg = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
801 palmas_regs_info[id].ctrl_addr);
e5ce4208
GG		 802 pmic->desc[id].enable_mask = PALMAS_LDO1_CTRL_MODE_ACTIVE;
803
a361cd9f 804 if (pdata)
e5ce4208
GG		 805 config.init_data = pdata->reg_data[id];
806 else
807 config.init_data = NULL;
808
a361cd9f
GG		 809 config.of_node = palmas_matches[id].of_node;
810
e5ce4208
GG		 811 rdev = regulator_register(&pmic->desc[id], &config);
812 if (IS_ERR(rdev)) {
813 dev_err(&pdev->dev,
814 "failed to register %s regulator\n",
815 pdev->name);
816 ret = PTR_ERR(rdev);
817 goto err_unregister_regulator;
818 }
819
820 /* Save regulator for cleanup */
821 pmic->rdev[id] = rdev;
822
823 /* Initialise sleep/init values from platform data */
a361cd9f 824 if (pdata) {
e5ce4208
GG		 825 reg_init = pdata->reg_init[id];
826 if (reg_init) {
827 ret = palmas_ldo_init(palmas, id, reg_init);
1c9d2d71
AL		 828 if (ret) {
829 regulator_unregister(pmic->rdev[id]);
e5ce4208 830 goto err_unregister_regulator;
1c9d2d71 831 }
e5ce4208
GG		 832 }
833 }
834 }
835
836 return 0;
837
838err_unregister_regulator:
839 while (--id >= 0)
840 regulator_unregister(pmic->rdev[id]);
e5ce4208
GG		 841 return ret;
842}
843
844static int __devexit palmas_remove(struct platform_device *pdev)
845{
846 struct palmas_pmic *pmic = platform_get_drvdata(pdev);
847 int id;
848
849 for (id = 0; id < PALMAS_NUM_REGS; id++)
850 regulator_unregister(pmic->rdev[id]);
e5ce4208
GG		 851 return 0;
852}
853
a361cd9f
GG		 854static struct of_device_id __devinitdata of_palmas_match_tbl[] = {
855 { .compatible = "ti,palmas-pmic", },
856 { /* end */ }
857};
858
e5ce4208
GG		 859static struct platform_driver palmas_driver = {
860 .driver = {
861 .name = "palmas-pmic",
a361cd9f 862 .of_match_table = of_palmas_match_tbl,
e5ce4208
GG		 863 .owner = THIS_MODULE,
864 },
865 .probe = palmas_probe,
866 .remove = __devexit_p(palmas_remove),
867};
868
869static int __init palmas_init(void)
870{
871 return platform_driver_register(&palmas_driver);
872}
873subsys_initcall(palmas_init);
874
875static void __exit palmas_exit(void)
876{
877 platform_driver_unregister(&palmas_driver);
878}
879module_exit(palmas_exit);
880
881MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
882MODULE_DESCRIPTION("Palmas voltage regulator driver");
883MODULE_LICENSE("GPL");
884MODULE_ALIAS("platform:palmas-pmic");
a361cd9f 885MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
Linux kernel - Deliverables
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