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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Regulator driver for TI TPS6586x
4 *
5 * Copyright (C) 2010 Compulab Ltd.
6 * Author: Mike Rapoport <mike@compulab.co.il>
7 *
8 * Based on da903x
9 * Copyright (C) 2006-2008 Marvell International Ltd.
10 * Copyright (C) 2008 Compulab Ltd.
11 */
12
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/err.h>
17#include <linux/of.h>
18#include <linux/slab.h>
19#include <linux/platform_device.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/machine.h>
22#include <linux/regulator/of_regulator.h>
23#include <linux/mfd/tps6586x.h>
24
25/* supply control and voltage setting */
26#define TPS6586X_SUPPLYENA 0x10
27#define TPS6586X_SUPPLYENB 0x11
28#define TPS6586X_SUPPLYENC 0x12
29#define TPS6586X_SUPPLYEND 0x13
30#define TPS6586X_SUPPLYENE 0x14
31#define TPS6586X_VCC1 0x20
32#define TPS6586X_VCC2 0x21
33#define TPS6586X_SM1V1 0x23
34#define TPS6586X_SM1V2 0x24
35#define TPS6586X_SM1SL 0x25
36#define TPS6586X_SM0V1 0x26
37#define TPS6586X_SM0V2 0x27
38#define TPS6586X_SM0SL 0x28
39#define TPS6586X_LDO2AV1 0x29
40#define TPS6586X_LDO2AV2 0x2A
41#define TPS6586X_LDO2BV1 0x2F
42#define TPS6586X_LDO2BV2 0x30
43#define TPS6586X_LDO4V1 0x32
44#define TPS6586X_LDO4V2 0x33
45
46/* converter settings */
47#define TPS6586X_SUPPLYV1 0x41
48#define TPS6586X_SUPPLYV2 0x42
49#define TPS6586X_SUPPLYV3 0x43
50#define TPS6586X_SUPPLYV4 0x44
51#define TPS6586X_SUPPLYV5 0x45
52#define TPS6586X_SUPPLYV6 0x46
53#define TPS6586X_SMODE1 0x47
54#define TPS6586X_SMODE2 0x48
55
56struct tps6586x_regulator {
57 struct regulator_desc desc;
58
59 int enable_bit[2];
60 int enable_reg[2];
61};
62
63static const struct regulator_ops tps6586x_rw_regulator_ops = {
64 .list_voltage = regulator_list_voltage_table,
65 .map_voltage = regulator_map_voltage_ascend,
66 .get_voltage_sel = regulator_get_voltage_sel_regmap,
67 .set_voltage_sel = regulator_set_voltage_sel_regmap,
68
69 .is_enabled = regulator_is_enabled_regmap,
70 .enable = regulator_enable_regmap,
71 .disable = regulator_disable_regmap,
72};
73
74static const struct regulator_ops tps6586x_rw_linear_regulator_ops = {
75 .list_voltage = regulator_list_voltage_linear,
76 .get_voltage_sel = regulator_get_voltage_sel_regmap,
77 .set_voltage_sel = regulator_set_voltage_sel_regmap,
78
79 .is_enabled = regulator_is_enabled_regmap,
80 .enable = regulator_enable_regmap,
81 .disable = regulator_disable_regmap,
82};
83
84static const struct regulator_ops tps6586x_ro_regulator_ops = {
85 .list_voltage = regulator_list_voltage_table,
86 .map_voltage = regulator_map_voltage_ascend,
87 .get_voltage_sel = regulator_get_voltage_sel_regmap,
88
89 .is_enabled = regulator_is_enabled_regmap,
90 .enable = regulator_enable_regmap,
91 .disable = regulator_disable_regmap,
92};
93
94static const struct regulator_ops tps6586x_sys_regulator_ops = {
95};
96
97static const unsigned int tps6586x_ldo0_voltages[] = {
98 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
99};
100
101static const unsigned int tps6586x_ldo_voltages[] = {
102 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
103};
104
105static const unsigned int tps658640_rtc_voltages[] = {
106 2500000, 2850000, 3100000, 3300000,
107};
108
109#define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \
110 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
111 .desc = { \
112 .supply_name = _pin_name, \
113 .name = "REG-" #_id, \
114 .ops = &tps6586x_## _ops ## _regulator_ops, \
115 .type = REGULATOR_VOLTAGE, \
116 .id = TPS6586X_ID_##_id, \
117 .n_voltages = ARRAY_SIZE(vdata##_voltages), \
118 .volt_table = vdata##_voltages, \
119 .owner = THIS_MODULE, \
120 .enable_reg = TPS6586X_SUPPLY##ereg0, \
121 .enable_mask = 1 << (ebit0), \
122 .vsel_reg = TPS6586X_##vreg, \
123 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
124 .apply_reg = (goreg), \
125 .apply_bit = (gobit), \
126 }, \
127 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
128 .enable_bit[0] = (ebit0), \
129 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
130 .enable_bit[1] = (ebit1),
131
132#define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv, \
133 uv_step, vreg, shift, nbits, ereg0, \
134 ebit0, ereg1, ebit1, goreg, gobit) \
135 .desc = { \
136 .supply_name = _pin_name, \
137 .name = "REG-" #_id, \
138 .ops = &tps6586x_## _ops ## _regulator_ops, \
139 .type = REGULATOR_VOLTAGE, \
140 .id = TPS6586X_ID_##_id, \
141 .n_voltages = n_volt, \
142 .min_uV = min_uv, \
143 .uV_step = uv_step, \
144 .owner = THIS_MODULE, \
145 .enable_reg = TPS6586X_SUPPLY##ereg0, \
146 .enable_mask = 1 << (ebit0), \
147 .vsel_reg = TPS6586X_##vreg, \
148 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
149 .apply_reg = (goreg), \
150 .apply_bit = (gobit), \
151 }, \
152 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
153 .enable_bit[0] = (ebit0), \
154 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
155 .enable_bit[1] = (ebit1),
156
157#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \
158 ereg0, ebit0, ereg1, ebit1) \
159{ \
160 TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits, \
161 ereg0, ebit0, ereg1, ebit1, 0, 0) \
162}
163
164#define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg, \
165 shift, nbits, ereg0, ebit0, ereg1, ebit1) \
166{ \
167 TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
168 min_uv, uv_step, vreg, shift, nbits, \
169 ereg0, ebit0, ereg1, ebit1, 0, 0) \
170}
171
172#define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits, \
173 ereg0, ebit0, ereg1, ebit1) \
174{ \
175 TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits, \
176 ereg0, ebit0, ereg1, ebit1, 0, 0) \
177}
178
179#define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift, \
180 nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
181{ \
182 TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
183 min_uv, uv_step, vreg, shift, nbits, \
184 ereg0, ebit0, ereg1, ebit1, goreg, \
185 gobit) \
186}
187
188#define TPS6586X_SYS_REGULATOR() \
189{ \
190 .desc = { \
191 .supply_name = "sys", \
192 .name = "REG-SYS", \
193 .ops = &tps6586x_sys_regulator_ops, \
194 .type = REGULATOR_VOLTAGE, \
195 .id = TPS6586X_ID_SYS, \
196 .owner = THIS_MODULE, \
197 }, \
198}
199
200static struct tps6586x_regulator tps6586x_regulator[] = {
201 TPS6586X_SYS_REGULATOR(),
202 TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
203 END, 0),
204 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2,
205 END, 2),
206 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6,
207 ENE, 6),
208 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4,
209 END, 4),
210 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5,
211 END, 5),
212 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6,
213 END, 6),
214 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7,
215 ENE, 7),
216 TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7,
217 V4, 7),
218 TPS6586X_LDO_LINEAR(LDO_1, "vinldo01", 32, 725000, 25000, SUPPLYV1,
219 0, 5, ENC, 1, END, 1),
220 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 3000000, 50000, SUPPLYV2,
221 0, 5, ENC, 7, END, 7),
222 TPS6586X_DVM(LDO_2, "vinldo23", 32, 725000, 25000, LDO2BV1, 0, 5,
223 ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)),
224 TPS6586X_DVM(LDO_4, "vinldo4", 32, 1700000, 25000, LDO4V1, 0, 5,
225 ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)),
226 TPS6586X_DVM(SM_0, "vin-sm0", 32, 725000, 25000, SM0V1, 0, 5,
227 ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)),
228 TPS6586X_DVM(SM_1, "vin-sm1", 32, 725000, 25000, SM1V1, 0, 5,
229 ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)),
230};
231
232static struct tps6586x_regulator tps658623_regulator[] = {
233 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1700000, 25000, SUPPLYV2,
234 0, 5, ENC, 7, END, 7),
235};
236
237static struct tps6586x_regulator tps658640_regulator[] = {
238 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo0, SUPPLYV4, 0, 3,
239 ENC, 2, END, 2),
240 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo0, SUPPLYV6, 0, 3,
241 ENE, 6, ENE, 6),
242 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo0, SUPPLYV3, 0, 3,
243 ENC, 4, END, 4),
244 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo0, SUPPLYV3, 3, 3,
245 ENC, 5, END, 5),
246 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo0, SUPPLYV2, 5, 3,
247 ENC, 6, END, 6),
248 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo0, SUPPLYV6, 3, 3,
249 ENE, 7, ENE, 7),
250 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 2150000, 50000, SUPPLYV2,
251 0, 5, ENC, 7, END, 7),
252
253 TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS", tps658640_rtc, SUPPLYV4, 3, 2,
254 V4, 7, V4, 7),
255};
256
257static struct tps6586x_regulator tps658643_regulator[] = {
258 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1025000, 25000, SUPPLYV2,
259 0, 5, ENC, 7, END, 7),
260};
261
262/*
263 * TPS6586X has 2 enable bits that are OR'ed to determine the actual
264 * regulator state. Clearing one of this bits allows switching
265 * regulator on and of with single register write.
266 */
267static inline int tps6586x_regulator_preinit(struct device *parent,
268 struct tps6586x_regulator *ri)
269{
270 uint8_t val1, val2;
271 int ret;
272
273 if (ri->enable_reg[0] == ri->enable_reg[1] &&
274 ri->enable_bit[0] == ri->enable_bit[1])
275 return 0;
276
277 ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
278 if (ret)
279 return ret;
280
281 ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
282 if (ret)
283 return ret;
284
285 if (!(val2 & (1 << ri->enable_bit[1])))
286 return 0;
287
288 /*
289 * The regulator is on, but it's enabled with the bit we don't
290 * want to use, so we switch the enable bits
291 */
292 if (!(val1 & (1 << ri->enable_bit[0]))) {
293 ret = tps6586x_set_bits(parent, ri->enable_reg[0],
294 1 << ri->enable_bit[0]);
295 if (ret)
296 return ret;
297 }
298
299 return tps6586x_clr_bits(parent, ri->enable_reg[1],
300 1 << ri->enable_bit[1]);
301}
302
303static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
304 int id, struct regulator_init_data *p)
305{
306 struct device *parent = pdev->dev.parent;
307 struct tps6586x_settings *setting = p->driver_data;
308 uint8_t reg;
309
310 if (setting == NULL)
311 return 0;
312
313 if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
314 return 0;
315
316 /* only SM0 and SM1 can have the slew rate settings */
317 switch (id) {
318 case TPS6586X_ID_SM_0:
319 reg = TPS6586X_SM0SL;
320 break;
321 case TPS6586X_ID_SM_1:
322 reg = TPS6586X_SM1SL;
323 break;
324 default:
325 dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
326 return -EINVAL;
327 }
328
329 return tps6586x_write(parent, reg,
330 setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
331}
332
333static struct tps6586x_regulator *find_regulator_info(int id, int version)
334{
335 struct tps6586x_regulator *ri;
336 struct tps6586x_regulator *table = NULL;
337 int num;
338 int i;
339
340 switch (version) {
341 case TPS658623:
342 case TPS658624:
343 table = tps658623_regulator;
344 num = ARRAY_SIZE(tps658623_regulator);
345 break;
346 case TPS658640:
347 case TPS658640v2:
348 table = tps658640_regulator;
349 num = ARRAY_SIZE(tps658640_regulator);
350 break;
351 case TPS658643:
352 table = tps658643_regulator;
353 num = ARRAY_SIZE(tps658643_regulator);
354 break;
355 }
356
357 /* Search version specific table first */
358 if (table) {
359 for (i = 0; i < num; i++) {
360 ri = &table[i];
361 if (ri->desc.id == id)
362 return ri;
363 }
364 }
365
366 for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
367 ri = &tps6586x_regulator[i];
368 if (ri->desc.id == id)
369 return ri;
370 }
371 return NULL;
372}
373
374#ifdef CONFIG_OF
375static struct of_regulator_match tps6586x_matches[] = {
376 { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
377 { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
378 { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
379 { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
380 { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
381 { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
382 { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
383 { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
384 { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
385 { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
386 { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
387 { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
388 { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
389 { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
390 { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
391};
392
393static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
394 struct platform_device *pdev,
395 struct of_regulator_match **tps6586x_reg_matches)
396{
397 const unsigned int num = ARRAY_SIZE(tps6586x_matches);
398 struct device_node *np = pdev->dev.parent->of_node;
399 struct device_node *regs;
400 const char *sys_rail = NULL;
401 unsigned int i;
402 struct tps6586x_platform_data *pdata;
403 int err;
404
405 regs = of_get_child_by_name(np, "regulators");
406 if (!regs) {
407 dev_err(&pdev->dev, "regulator node not found\n");
408 return NULL;
409 }
410
411 err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num);
412 of_node_put(regs);
413 if (err < 0) {
414 dev_err(&pdev->dev, "Regulator match failed, e %d\n", err);
415 return NULL;
416 }
417
418 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
419 if (!pdata)
420 return NULL;
421
422 for (i = 0; i < num; i++) {
423 uintptr_t id;
424 if (!tps6586x_matches[i].init_data)
425 continue;
426
427 pdata->reg_init_data[i] = tps6586x_matches[i].init_data;
428 id = (uintptr_t)tps6586x_matches[i].driver_data;
429 if (id == TPS6586X_ID_SYS)
430 sys_rail = pdata->reg_init_data[i]->constraints.name;
431
432 if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC))
433 pdata->reg_init_data[i]->supply_regulator = sys_rail;
434 }
435 *tps6586x_reg_matches = tps6586x_matches;
436 return pdata;
437}
438#else
439static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
440 struct platform_device *pdev,
441 struct of_regulator_match **tps6586x_reg_matches)
442{
443 *tps6586x_reg_matches = NULL;
444 return NULL;
445}
446#endif
447
448static int tps6586x_regulator_probe(struct platform_device *pdev)
449{
450 struct tps6586x_regulator *ri = NULL;
451 struct regulator_config config = { };
452 struct regulator_dev *rdev;
453 struct regulator_init_data *reg_data;
454 struct tps6586x_platform_data *pdata;
455 struct of_regulator_match *tps6586x_reg_matches = NULL;
456 int version;
457 int id;
458 int err;
459
460 dev_dbg(&pdev->dev, "Probing regulator\n");
461
462 pdata = dev_get_platdata(pdev->dev.parent);
463 if ((!pdata) && (pdev->dev.parent->of_node))
464 pdata = tps6586x_parse_regulator_dt(pdev,
465 &tps6586x_reg_matches);
466
467 if (!pdata) {
468 dev_err(&pdev->dev, "Platform data not available, exiting\n");
469 return -ENODEV;
470 }
471
472 version = tps6586x_get_version(pdev->dev.parent);
473
474 for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
475 reg_data = pdata->reg_init_data[id];
476
477 ri = find_regulator_info(id, version);
478
479 if (!ri) {
480 dev_err(&pdev->dev, "invalid regulator ID specified\n");
481 return -EINVAL;
482 }
483
484 err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
485 if (err) {
486 dev_err(&pdev->dev,
487 "regulator %d preinit failed, e %d\n", id, err);
488 return err;
489 }
490
491 config.dev = pdev->dev.parent;
492 config.init_data = reg_data;
493 config.driver_data = ri;
494
495 if (tps6586x_reg_matches)
496 config.of_node = tps6586x_reg_matches[id].of_node;
497
498 rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
499 if (IS_ERR(rdev)) {
500 dev_err(&pdev->dev, "failed to register regulator %s\n",
501 ri->desc.name);
502 return PTR_ERR(rdev);
503 }
504
505 if (reg_data) {
506 err = tps6586x_regulator_set_slew_rate(pdev, id,
507 reg_data);
508 if (err < 0) {
509 dev_err(&pdev->dev,
510 "Slew rate config failed, e %d\n", err);
511 return err;
512 }
513 }
514 }
515
516 platform_set_drvdata(pdev, rdev);
517 return 0;
518}
519
520static struct platform_driver tps6586x_regulator_driver = {
521 .driver = {
522 .name = "tps6586x-regulator",
523 },
524 .probe = tps6586x_regulator_probe,
525};
526
527static int __init tps6586x_regulator_init(void)
528{
529 return platform_driver_register(&tps6586x_regulator_driver);
530}
531subsys_initcall(tps6586x_regulator_init);
532
533static void __exit tps6586x_regulator_exit(void)
534{
535 platform_driver_unregister(&tps6586x_regulator_driver);
536}
537module_exit(tps6586x_regulator_exit);
538
539MODULE_LICENSE("GPL");
540MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
541MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
542MODULE_ALIAS("platform:tps6586x-regulator");
1/*
2 * Regulator driver for TI TPS6586x
3 *
4 * Copyright (C) 2010 Compulab Ltd.
5 * Author: Mike Rapoport <mike@compulab.co.il>
6 *
7 * Based on da903x
8 * Copyright (C) 2006-2008 Marvell International Ltd.
9 * Copyright (C) 2008 Compulab Ltd.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
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/slab.h>
21#include <linux/platform_device.h>
22#include <linux/regulator/driver.h>
23#include <linux/regulator/machine.h>
24#include <linux/mfd/tps6586x.h>
25
26/* supply control and voltage setting */
27#define TPS6586X_SUPPLYENA 0x10
28#define TPS6586X_SUPPLYENB 0x11
29#define TPS6586X_SUPPLYENC 0x12
30#define TPS6586X_SUPPLYEND 0x13
31#define TPS6586X_SUPPLYENE 0x14
32#define TPS6586X_VCC1 0x20
33#define TPS6586X_VCC2 0x21
34#define TPS6586X_SM1V1 0x23
35#define TPS6586X_SM1V2 0x24
36#define TPS6586X_SM1SL 0x25
37#define TPS6586X_SM0V1 0x26
38#define TPS6586X_SM0V2 0x27
39#define TPS6586X_SM0SL 0x28
40#define TPS6586X_LDO2AV1 0x29
41#define TPS6586X_LDO2AV2 0x2A
42#define TPS6586X_LDO2BV1 0x2F
43#define TPS6586X_LDO2BV2 0x30
44#define TPS6586X_LDO4V1 0x32
45#define TPS6586X_LDO4V2 0x33
46
47/* converter settings */
48#define TPS6586X_SUPPLYV1 0x41
49#define TPS6586X_SUPPLYV2 0x42
50#define TPS6586X_SUPPLYV3 0x43
51#define TPS6586X_SUPPLYV4 0x44
52#define TPS6586X_SUPPLYV5 0x45
53#define TPS6586X_SUPPLYV6 0x46
54#define TPS6586X_SMODE1 0x47
55#define TPS6586X_SMODE2 0x48
56
57struct tps6586x_regulator {
58 struct regulator_desc desc;
59
60 int volt_reg;
61 int volt_shift;
62 int volt_nbits;
63 int enable_bit[2];
64 int enable_reg[2];
65
66 int *voltages;
67
68 /* for DVM regulators */
69 int go_reg;
70 int go_bit;
71};
72
73static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev)
74{
75 return rdev_get_dev(rdev)->parent->parent;
76}
77
78static int tps6586x_list_voltage(struct regulator_dev *rdev, unsigned selector)
79{
80 struct tps6586x_regulator *info = rdev_get_drvdata(rdev);
81 int rid = rdev_get_id(rdev);
82
83 /* LDO0 has minimal voltage 1.2V rather than 1.25V */
84 if ((rid == TPS6586X_ID_LDO_0) && (selector == 0))
85 return (info->voltages[0] - 50) * 1000;
86
87 return info->voltages[selector] * 1000;
88}
89
90
91static int tps6586x_set_voltage_sel(struct regulator_dev *rdev,
92 unsigned selector)
93{
94 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
95 struct device *parent = to_tps6586x_dev(rdev);
96 int ret, val, rid = rdev_get_id(rdev);
97 uint8_t mask;
98
99 val = selector << ri->volt_shift;
100 mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
101
102 ret = tps6586x_update(parent, ri->volt_reg, val, mask);
103 if (ret)
104 return ret;
105
106 /* Update go bit for DVM regulators */
107 switch (rid) {
108 case TPS6586X_ID_LDO_2:
109 case TPS6586X_ID_LDO_4:
110 case TPS6586X_ID_SM_0:
111 case TPS6586X_ID_SM_1:
112 ret = tps6586x_set_bits(parent, ri->go_reg, 1 << ri->go_bit);
113 break;
114 }
115 return ret;
116}
117
118static int tps6586x_get_voltage_sel(struct regulator_dev *rdev)
119{
120 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
121 struct device *parent = to_tps6586x_dev(rdev);
122 uint8_t val, mask;
123 int ret;
124
125 ret = tps6586x_read(parent, ri->volt_reg, &val);
126 if (ret)
127 return ret;
128
129 mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
130 val = (val & mask) >> ri->volt_shift;
131
132 if (val >= ri->desc.n_voltages)
133 BUG();
134
135 return val;
136}
137
138static int tps6586x_regulator_enable(struct regulator_dev *rdev)
139{
140 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
141 struct device *parent = to_tps6586x_dev(rdev);
142
143 return tps6586x_set_bits(parent, ri->enable_reg[0],
144 1 << ri->enable_bit[0]);
145}
146
147static int tps6586x_regulator_disable(struct regulator_dev *rdev)
148{
149 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
150 struct device *parent = to_tps6586x_dev(rdev);
151
152 return tps6586x_clr_bits(parent, ri->enable_reg[0],
153 1 << ri->enable_bit[0]);
154}
155
156static int tps6586x_regulator_is_enabled(struct regulator_dev *rdev)
157{
158 struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
159 struct device *parent = to_tps6586x_dev(rdev);
160 uint8_t reg_val;
161 int ret;
162
163 ret = tps6586x_read(parent, ri->enable_reg[0], ®_val);
164 if (ret)
165 return ret;
166
167 return !!(reg_val & (1 << ri->enable_bit[0]));
168}
169
170static struct regulator_ops tps6586x_regulator_ops = {
171 .list_voltage = tps6586x_list_voltage,
172 .get_voltage_sel = tps6586x_get_voltage_sel,
173 .set_voltage_sel = tps6586x_set_voltage_sel,
174
175 .is_enabled = tps6586x_regulator_is_enabled,
176 .enable = tps6586x_regulator_enable,
177 .disable = tps6586x_regulator_disable,
178};
179
180static int tps6586x_ldo_voltages[] = {
181 1250, 1500, 1800, 2500, 2700, 2850, 3100, 3300,
182};
183
184static int tps6586x_ldo4_voltages[] = {
185 1700, 1725, 1750, 1775, 1800, 1825, 1850, 1875,
186 1900, 1925, 1950, 1975, 2000, 2025, 2050, 2075,
187 2100, 2125, 2150, 2175, 2200, 2225, 2250, 2275,
188 2300, 2325, 2350, 2375, 2400, 2425, 2450, 2475,
189};
190
191static int tps6586x_sm2_voltages[] = {
192 3000, 3050, 3100, 3150, 3200, 3250, 3300, 3350,
193 3400, 3450, 3500, 3550, 3600, 3650, 3700, 3750,
194 3800, 3850, 3900, 3950, 4000, 4050, 4100, 4150,
195 4200, 4250, 4300, 4350, 4400, 4450, 4500, 4550,
196};
197
198static int tps6586x_dvm_voltages[] = {
199 725, 750, 775, 800, 825, 850, 875, 900,
200 925, 950, 975, 1000, 1025, 1050, 1075, 1100,
201 1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300,
202 1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500,
203};
204
205#define TPS6586X_REGULATOR(_id, vdata, vreg, shift, nbits, \
206 ereg0, ebit0, ereg1, ebit1) \
207 .desc = { \
208 .name = "REG-" #_id, \
209 .ops = &tps6586x_regulator_ops, \
210 .type = REGULATOR_VOLTAGE, \
211 .id = TPS6586X_ID_##_id, \
212 .n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \
213 .owner = THIS_MODULE, \
214 }, \
215 .volt_reg = TPS6586X_##vreg, \
216 .volt_shift = (shift), \
217 .volt_nbits = (nbits), \
218 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
219 .enable_bit[0] = (ebit0), \
220 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
221 .enable_bit[1] = (ebit1), \
222 .voltages = tps6586x_##vdata##_voltages,
223
224#define TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
225 .go_reg = TPS6586X_##goreg, \
226 .go_bit = (gobit),
227
228#define TPS6586X_LDO(_id, vdata, vreg, shift, nbits, \
229 ereg0, ebit0, ereg1, ebit1) \
230{ \
231 TPS6586X_REGULATOR(_id, vdata, vreg, shift, nbits, \
232 ereg0, ebit0, ereg1, ebit1) \
233}
234
235#define TPS6586X_DVM(_id, vdata, vreg, shift, nbits, \
236 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
237{ \
238 TPS6586X_REGULATOR(_id, vdata, vreg, shift, nbits, \
239 ereg0, ebit0, ereg1, ebit1) \
240 TPS6586X_REGULATOR_DVM_GOREG(goreg, gobit) \
241}
242
243static struct tps6586x_regulator tps6586x_regulator[] = {
244 TPS6586X_LDO(LDO_0, ldo, SUPPLYV1, 5, 3, ENC, 0, END, 0),
245 TPS6586X_LDO(LDO_3, ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
246 TPS6586X_LDO(LDO_5, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
247 TPS6586X_LDO(LDO_6, ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
248 TPS6586X_LDO(LDO_7, ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
249 TPS6586X_LDO(LDO_8, ldo, SUPPLYV2, 5, 3, ENC, 6, END, 6),
250 TPS6586X_LDO(LDO_9, ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
251 TPS6586X_LDO(LDO_RTC, ldo, SUPPLYV4, 3, 3, V4, 7, V4, 7),
252 TPS6586X_LDO(LDO_1, dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
253 TPS6586X_LDO(SM_2, sm2, SUPPLYV2, 0, 5, ENC, 7, END, 7),
254
255 TPS6586X_DVM(LDO_2, dvm, LDO2BV1, 0, 5, ENA, 3, ENB, 3, VCC2, 6),
256 TPS6586X_DVM(LDO_4, ldo4, LDO4V1, 0, 5, ENC, 3, END, 3, VCC1, 6),
257 TPS6586X_DVM(SM_0, dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
258 TPS6586X_DVM(SM_1, dvm, SM1V1, 0, 5, ENA, 0, ENB, 0, VCC1, 0),
259};
260
261/*
262 * TPS6586X has 2 enable bits that are OR'ed to determine the actual
263 * regulator state. Clearing one of this bits allows switching
264 * regulator on and of with single register write.
265 */
266static inline int tps6586x_regulator_preinit(struct device *parent,
267 struct tps6586x_regulator *ri)
268{
269 uint8_t val1, val2;
270 int ret;
271
272 if (ri->enable_reg[0] == ri->enable_reg[1] &&
273 ri->enable_bit[0] == ri->enable_bit[1])
274 return 0;
275
276 ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
277 if (ret)
278 return ret;
279
280 ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
281 if (ret)
282 return ret;
283
284 if (!(val2 & (1 << ri->enable_bit[1])))
285 return 0;
286
287 /*
288 * The regulator is on, but it's enabled with the bit we don't
289 * want to use, so we switch the enable bits
290 */
291 if (!(val1 & (1 << ri->enable_bit[0]))) {
292 ret = tps6586x_set_bits(parent, ri->enable_reg[0],
293 1 << ri->enable_bit[0]);
294 if (ret)
295 return ret;
296 }
297
298 return tps6586x_clr_bits(parent, ri->enable_reg[1],
299 1 << ri->enable_bit[1]);
300}
301
302static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
303{
304 struct device *parent = pdev->dev.parent;
305 struct regulator_init_data *p = pdev->dev.platform_data;
306 struct tps6586x_settings *setting = p->driver_data;
307 uint8_t reg;
308
309 if (setting == NULL)
310 return 0;
311
312 if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
313 return 0;
314
315 /* only SM0 and SM1 can have the slew rate settings */
316 switch (pdev->id) {
317 case TPS6586X_ID_SM_0:
318 reg = TPS6586X_SM0SL;
319 break;
320 case TPS6586X_ID_SM_1:
321 reg = TPS6586X_SM1SL;
322 break;
323 default:
324 dev_warn(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
325 return -EINVAL;
326 }
327
328 return tps6586x_write(parent, reg,
329 setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
330}
331
332static inline struct tps6586x_regulator *find_regulator_info(int id)
333{
334 struct tps6586x_regulator *ri;
335 int i;
336
337 for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
338 ri = &tps6586x_regulator[i];
339 if (ri->desc.id == id)
340 return ri;
341 }
342 return NULL;
343}
344
345static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
346{
347 struct tps6586x_regulator *ri = NULL;
348 struct regulator_config config = { };
349 struct regulator_dev *rdev;
350 int id = pdev->id;
351 int err;
352
353 dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
354
355 ri = find_regulator_info(id);
356 if (ri == NULL) {
357 dev_err(&pdev->dev, "invalid regulator ID specified\n");
358 return -EINVAL;
359 }
360
361 err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
362 if (err)
363 return err;
364
365 config.dev = &pdev->dev;
366 config.of_node = pdev->dev.of_node;
367 config.init_data = pdev->dev.platform_data;
368 config.driver_data = ri;
369
370 rdev = regulator_register(&ri->desc, &config);
371 if (IS_ERR(rdev)) {
372 dev_err(&pdev->dev, "failed to register regulator %s\n",
373 ri->desc.name);
374 return PTR_ERR(rdev);
375 }
376
377 platform_set_drvdata(pdev, rdev);
378
379 return tps6586x_regulator_set_slew_rate(pdev);
380}
381
382static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
383{
384 struct regulator_dev *rdev = platform_get_drvdata(pdev);
385
386 regulator_unregister(rdev);
387 return 0;
388}
389
390static struct platform_driver tps6586x_regulator_driver = {
391 .driver = {
392 .name = "tps6586x-regulator",
393 .owner = THIS_MODULE,
394 },
395 .probe = tps6586x_regulator_probe,
396 .remove = __devexit_p(tps6586x_regulator_remove),
397};
398
399static int __init tps6586x_regulator_init(void)
400{
401 return platform_driver_register(&tps6586x_regulator_driver);
402}
403subsys_initcall(tps6586x_regulator_init);
404
405static void __exit tps6586x_regulator_exit(void)
406{
407 platform_driver_unregister(&tps6586x_regulator_driver);
408}
409module_exit(tps6586x_regulator_exit);
410
411MODULE_LICENSE("GPL");
412MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
413MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
414MODULE_ALIAS("platform:tps6586x-regulator");