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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 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 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 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 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/of.h>
21#include <linux/slab.h>
22#include <linux/platform_device.h>
23#include <linux/regulator/driver.h>
24#include <linux/regulator/machine.h>
25#include <linux/regulator/of_regulator.h>
26#include <linux/mfd/tps6586x.h>
27
28/* supply control and voltage setting */
29#define TPS6586X_SUPPLYENA 0x10
30#define TPS6586X_SUPPLYENB 0x11
31#define TPS6586X_SUPPLYENC 0x12
32#define TPS6586X_SUPPLYEND 0x13
33#define TPS6586X_SUPPLYENE 0x14
34#define TPS6586X_VCC1 0x20
35#define TPS6586X_VCC2 0x21
36#define TPS6586X_SM1V1 0x23
37#define TPS6586X_SM1V2 0x24
38#define TPS6586X_SM1SL 0x25
39#define TPS6586X_SM0V1 0x26
40#define TPS6586X_SM0V2 0x27
41#define TPS6586X_SM0SL 0x28
42#define TPS6586X_LDO2AV1 0x29
43#define TPS6586X_LDO2AV2 0x2A
44#define TPS6586X_LDO2BV1 0x2F
45#define TPS6586X_LDO2BV2 0x30
46#define TPS6586X_LDO4V1 0x32
47#define TPS6586X_LDO4V2 0x33
48
49/* converter settings */
50#define TPS6586X_SUPPLYV1 0x41
51#define TPS6586X_SUPPLYV2 0x42
52#define TPS6586X_SUPPLYV3 0x43
53#define TPS6586X_SUPPLYV4 0x44
54#define TPS6586X_SUPPLYV5 0x45
55#define TPS6586X_SUPPLYV6 0x46
56#define TPS6586X_SMODE1 0x47
57#define TPS6586X_SMODE2 0x48
58
59struct tps6586x_regulator {
60 struct regulator_desc desc;
61
62 int enable_bit[2];
63 int enable_reg[2];
64};
65
66static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev)
67{
68 return rdev_get_dev(rdev)->parent;
69}
70
71static struct regulator_ops tps6586x_regulator_ops = {
72 .list_voltage = regulator_list_voltage_table,
73 .map_voltage = regulator_map_voltage_ascend,
74 .get_voltage_sel = regulator_get_voltage_sel_regmap,
75 .set_voltage_sel = regulator_set_voltage_sel_regmap,
76
77 .is_enabled = regulator_is_enabled_regmap,
78 .enable = regulator_enable_regmap,
79 .disable = regulator_disable_regmap,
80};
81
82static struct regulator_ops tps6586x_sys_regulator_ops = {
83};
84
85static const unsigned int tps6586x_ldo0_voltages[] = {
86 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
87};
88
89static const unsigned int tps6586x_ldo4_voltages[] = {
90 1700000, 1725000, 1750000, 1775000, 1800000, 1825000, 1850000, 1875000,
91 1900000, 1925000, 1950000, 1975000, 2000000, 2025000, 2050000, 2075000,
92 2100000, 2125000, 2150000, 2175000, 2200000, 2225000, 2250000, 2275000,
93 2300000, 2325000, 2350000, 2375000, 2400000, 2425000, 2450000, 2475000,
94};
95
96#define tps658623_sm2_voltages tps6586x_ldo4_voltages
97
98static const unsigned int tps6586x_ldo_voltages[] = {
99 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
100};
101
102static const unsigned int tps6586x_sm2_voltages[] = {
103 3000000, 3050000, 3100000, 3150000, 3200000, 3250000, 3300000, 3350000,
104 3400000, 3450000, 3500000, 3550000, 3600000, 3650000, 3700000, 3750000,
105 3800000, 3850000, 3900000, 3950000, 4000000, 4050000, 4100000, 4150000,
106 4200000, 4250000, 4300000, 4350000, 4400000, 4450000, 4500000, 4550000,
107};
108
109static const unsigned int tps658643_sm2_voltages[] = {
110 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, 1200000,
111 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000, 1400000,
112 1425000, 1450000, 1475000, 1500000, 1525000, 1550000, 1575000, 1600000,
113 1625000, 1650000, 1675000, 1700000, 1725000, 1750000, 1775000, 1800000,
114};
115
116static const unsigned int tps6586x_dvm_voltages[] = {
117 725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
118 925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
119 1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
120 1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
121};
122
123#define TPS6586X_REGULATOR(_id, _pin_name, vdata, vreg, shift, nbits, \
124 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
125 .desc = { \
126 .supply_name = _pin_name, \
127 .name = "REG-" #_id, \
128 .ops = &tps6586x_regulator_ops, \
129 .type = REGULATOR_VOLTAGE, \
130 .id = TPS6586X_ID_##_id, \
131 .n_voltages = ARRAY_SIZE(vdata##_voltages), \
132 .volt_table = vdata##_voltages, \
133 .owner = THIS_MODULE, \
134 .enable_reg = TPS6586X_SUPPLY##ereg0, \
135 .enable_mask = 1 << (ebit0), \
136 .vsel_reg = TPS6586X_##vreg, \
137 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
138 .apply_reg = (goreg), \
139 .apply_bit = (gobit), \
140 }, \
141 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
142 .enable_bit[0] = (ebit0), \
143 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
144 .enable_bit[1] = (ebit1),
145
146#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \
147 ereg0, ebit0, ereg1, ebit1) \
148{ \
149 TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \
150 ereg0, ebit0, ereg1, ebit1, 0, 0) \
151}
152
153#define TPS6586X_DVM(_id, _pname, vdata, vreg, shift, nbits, \
154 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
155{ \
156 TPS6586X_REGULATOR(_id, _pname, vdata, vreg, shift, nbits, \
157 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
158}
159
160#define TPS6586X_SYS_REGULATOR() \
161{ \
162 .desc = { \
163 .supply_name = "sys", \
164 .name = "REG-SYS", \
165 .ops = &tps6586x_sys_regulator_ops, \
166 .type = REGULATOR_VOLTAGE, \
167 .id = TPS6586X_ID_SYS, \
168 .owner = THIS_MODULE, \
169 }, \
170}
171
172static struct tps6586x_regulator tps6586x_regulator[] = {
173 TPS6586X_SYS_REGULATOR(),
174 TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
175 END, 0),
176 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2,
177 END, 2),
178 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6,
179 ENE, 6),
180 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4,
181 END, 4),
182 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5,
183 END, 5),
184 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6,
185 END, 6),
186 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7,
187 ENE, 7),
188 TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7,
189 V4, 7),
190 TPS6586X_LDO(LDO_1, "vinldo01", tps6586x_dvm, SUPPLYV1, 0, 5, ENC, 1,
191 END, 1),
192 TPS6586X_LDO(SM_2, "vin-sm2", tps6586x_sm2, SUPPLYV2, 0, 5, ENC, 7,
193 END, 7),
194
195 TPS6586X_DVM(LDO_2, "vinldo23", tps6586x_dvm, LDO2BV1, 0, 5, ENA, 3,
196 ENB, 3, TPS6586X_VCC2, BIT(6)),
197 TPS6586X_DVM(LDO_4, "vinldo4", tps6586x_ldo4, LDO4V1, 0, 5, ENC, 3,
198 END, 3, TPS6586X_VCC1, BIT(6)),
199 TPS6586X_DVM(SM_0, "vin-sm0", tps6586x_dvm, SM0V1, 0, 5, ENA, 1,
200 ENB, 1, TPS6586X_VCC1, BIT(2)),
201 TPS6586X_DVM(SM_1, "vin-sm1", tps6586x_dvm, SM1V1, 0, 5, ENA, 0,
202 ENB, 0, TPS6586X_VCC1, BIT(0)),
203};
204
205static struct tps6586x_regulator tps658623_regulator[] = {
206 TPS6586X_LDO(SM_2, "vin-sm2", tps658623_sm2, SUPPLYV2, 0, 5, ENC, 7,
207 END, 7),
208};
209
210static struct tps6586x_regulator tps658643_regulator[] = {
211 TPS6586X_LDO(SM_2, "vin-sm2", tps658643_sm2, SUPPLYV2, 0, 5, ENC, 7,
212 END, 7),
213};
214
215/*
216 * TPS6586X has 2 enable bits that are OR'ed to determine the actual
217 * regulator state. Clearing one of this bits allows switching
218 * regulator on and of with single register write.
219 */
220static inline int tps6586x_regulator_preinit(struct device *parent,
221 struct tps6586x_regulator *ri)
222{
223 uint8_t val1, val2;
224 int ret;
225
226 if (ri->enable_reg[0] == ri->enable_reg[1] &&
227 ri->enable_bit[0] == ri->enable_bit[1])
228 return 0;
229
230 ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
231 if (ret)
232 return ret;
233
234 ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
235 if (ret)
236 return ret;
237
238 if (!(val2 & (1 << ri->enable_bit[1])))
239 return 0;
240
241 /*
242 * The regulator is on, but it's enabled with the bit we don't
243 * want to use, so we switch the enable bits
244 */
245 if (!(val1 & (1 << ri->enable_bit[0]))) {
246 ret = tps6586x_set_bits(parent, ri->enable_reg[0],
247 1 << ri->enable_bit[0]);
248 if (ret)
249 return ret;
250 }
251
252 return tps6586x_clr_bits(parent, ri->enable_reg[1],
253 1 << ri->enable_bit[1]);
254}
255
256static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
257 int id, struct regulator_init_data *p)
258{
259 struct device *parent = pdev->dev.parent;
260 struct tps6586x_settings *setting = p->driver_data;
261 uint8_t reg;
262
263 if (setting == NULL)
264 return 0;
265
266 if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
267 return 0;
268
269 /* only SM0 and SM1 can have the slew rate settings */
270 switch (id) {
271 case TPS6586X_ID_SM_0:
272 reg = TPS6586X_SM0SL;
273 break;
274 case TPS6586X_ID_SM_1:
275 reg = TPS6586X_SM1SL;
276 break;
277 default:
278 dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
279 return -EINVAL;
280 }
281
282 return tps6586x_write(parent, reg,
283 setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
284}
285
286static struct tps6586x_regulator *find_regulator_info(int id, int version)
287{
288 struct tps6586x_regulator *ri;
289 struct tps6586x_regulator *table = NULL;
290 int num;
291 int i;
292
293 switch (version) {
294 case TPS658623:
295 table = tps658623_regulator;
296 num = ARRAY_SIZE(tps658623_regulator);
297 break;
298 case TPS658643:
299 table = tps658643_regulator;
300 num = ARRAY_SIZE(tps658643_regulator);
301 break;
302 }
303
304 /* Search version specific table first */
305 if (table) {
306 for (i = 0; i < num; i++) {
307 ri = &table[i];
308 if (ri->desc.id == id)
309 return ri;
310 }
311 }
312
313 for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
314 ri = &tps6586x_regulator[i];
315 if (ri->desc.id == id)
316 return ri;
317 }
318 return NULL;
319}
320
321#ifdef CONFIG_OF
322static struct of_regulator_match tps6586x_matches[] = {
323 { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
324 { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
325 { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
326 { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
327 { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
328 { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
329 { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
330 { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
331 { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
332 { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
333 { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
334 { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
335 { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
336 { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
337 { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
338};
339
340static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
341 struct platform_device *pdev,
342 struct of_regulator_match **tps6586x_reg_matches)
343{
344 const unsigned int num = ARRAY_SIZE(tps6586x_matches);
345 struct device_node *np = pdev->dev.parent->of_node;
346 struct device_node *regs;
347 const char *sys_rail = NULL;
348 unsigned int i;
349 struct tps6586x_platform_data *pdata;
350 int err;
351
352 regs = of_get_child_by_name(np, "regulators");
353 if (!regs) {
354 dev_err(&pdev->dev, "regulator node not found\n");
355 return NULL;
356 }
357
358 err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num);
359 of_node_put(regs);
360 if (err < 0) {
361 dev_err(&pdev->dev, "Regulator match failed, e %d\n", err);
362 return NULL;
363 }
364
365 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
366 if (!pdata)
367 return NULL;
368
369 for (i = 0; i < num; i++) {
370 int id;
371 if (!tps6586x_matches[i].init_data)
372 continue;
373
374 pdata->reg_init_data[i] = tps6586x_matches[i].init_data;
375 id = (int)tps6586x_matches[i].driver_data;
376 if (id == TPS6586X_ID_SYS)
377 sys_rail = pdata->reg_init_data[i]->constraints.name;
378
379 if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC))
380 pdata->reg_init_data[i]->supply_regulator = sys_rail;
381 }
382 *tps6586x_reg_matches = tps6586x_matches;
383 return pdata;
384}
385#else
386static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
387 struct platform_device *pdev,
388 struct of_regulator_match **tps6586x_reg_matches)
389{
390 *tps6586x_reg_matches = NULL;
391 return NULL;
392}
393#endif
394
395static int tps6586x_regulator_probe(struct platform_device *pdev)
396{
397 struct tps6586x_regulator *ri = NULL;
398 struct regulator_config config = { };
399 struct regulator_dev *rdev;
400 struct regulator_init_data *reg_data;
401 struct tps6586x_platform_data *pdata;
402 struct of_regulator_match *tps6586x_reg_matches = NULL;
403 int version;
404 int id;
405 int err;
406
407 dev_dbg(&pdev->dev, "Probing regulator\n");
408
409 pdata = dev_get_platdata(pdev->dev.parent);
410 if ((!pdata) && (pdev->dev.parent->of_node))
411 pdata = tps6586x_parse_regulator_dt(pdev,
412 &tps6586x_reg_matches);
413
414 if (!pdata) {
415 dev_err(&pdev->dev, "Platform data not available, exiting\n");
416 return -ENODEV;
417 }
418
419 version = tps6586x_get_version(pdev->dev.parent);
420
421 for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
422 reg_data = pdata->reg_init_data[id];
423
424 ri = find_regulator_info(id, version);
425
426 if (!ri) {
427 dev_err(&pdev->dev, "invalid regulator ID specified\n");
428 return -EINVAL;
429 }
430
431 err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
432 if (err) {
433 dev_err(&pdev->dev,
434 "regulator %d preinit failed, e %d\n", id, err);
435 return err;
436 }
437
438 config.dev = pdev->dev.parent;
439 config.init_data = reg_data;
440 config.driver_data = ri;
441
442 if (tps6586x_reg_matches)
443 config.of_node = tps6586x_reg_matches[id].of_node;
444
445 rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
446 if (IS_ERR(rdev)) {
447 dev_err(&pdev->dev, "failed to register regulator %s\n",
448 ri->desc.name);
449 return PTR_ERR(rdev);
450 }
451
452 if (reg_data) {
453 err = tps6586x_regulator_set_slew_rate(pdev, id,
454 reg_data);
455 if (err < 0) {
456 dev_err(&pdev->dev,
457 "Slew rate config failed, e %d\n", err);
458 return err;
459 }
460 }
461 }
462
463 platform_set_drvdata(pdev, rdev);
464 return 0;
465}
466
467static struct platform_driver tps6586x_regulator_driver = {
468 .driver = {
469 .name = "tps6586x-regulator",
470 .owner = THIS_MODULE,
471 },
472 .probe = tps6586x_regulator_probe,
473};
474
475static int __init tps6586x_regulator_init(void)
476{
477 return platform_driver_register(&tps6586x_regulator_driver);
478}
479subsys_initcall(tps6586x_regulator_init);
480
481static void __exit tps6586x_regulator_exit(void)
482{
483 platform_driver_unregister(&tps6586x_regulator_driver);
484}
485module_exit(tps6586x_regulator_exit);
486
487MODULE_LICENSE("GPL");
488MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
489MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
490MODULE_ALIAS("platform:tps6586x-regulator");