Loading...
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 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
524 },
525 .probe = tps6586x_regulator_probe,
526};
527
528static int __init tps6586x_regulator_init(void)
529{
530 return platform_driver_register(&tps6586x_regulator_driver);
531}
532subsys_initcall(tps6586x_regulator_init);
533
534static void __exit tps6586x_regulator_exit(void)
535{
536 platform_driver_unregister(&tps6586x_regulator_driver);
537}
538module_exit(tps6586x_regulator_exit);
539
540MODULE_LICENSE("GPL");
541MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
542MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
543MODULE_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 struct regulator_ops tps6586x_rw_regulator_ops = {
67 .list_voltage = regulator_list_voltage_table,
68 .map_voltage = regulator_map_voltage_ascend,
69 .get_voltage_sel = regulator_get_voltage_sel_regmap,
70 .set_voltage_sel = regulator_set_voltage_sel_regmap,
71
72 .is_enabled = regulator_is_enabled_regmap,
73 .enable = regulator_enable_regmap,
74 .disable = regulator_disable_regmap,
75};
76
77static struct regulator_ops tps6586x_rw_linear_regulator_ops = {
78 .list_voltage = regulator_list_voltage_linear,
79 .get_voltage_sel = regulator_get_voltage_sel_regmap,
80 .set_voltage_sel = regulator_set_voltage_sel_regmap,
81
82 .is_enabled = regulator_is_enabled_regmap,
83 .enable = regulator_enable_regmap,
84 .disable = regulator_disable_regmap,
85};
86
87static struct regulator_ops tps6586x_ro_regulator_ops = {
88 .list_voltage = regulator_list_voltage_table,
89 .map_voltage = regulator_map_voltage_ascend,
90 .get_voltage_sel = regulator_get_voltage_sel_regmap,
91
92 .is_enabled = regulator_is_enabled_regmap,
93 .enable = regulator_enable_regmap,
94 .disable = regulator_disable_regmap,
95};
96
97static struct regulator_ops tps6586x_sys_regulator_ops = {
98};
99
100static const unsigned int tps6586x_ldo0_voltages[] = {
101 1200000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
102};
103
104static const unsigned int tps6586x_ldo_voltages[] = {
105 1250000, 1500000, 1800000, 2500000, 2700000, 2850000, 3100000, 3300000,
106};
107
108static const unsigned int tps658640_rtc_voltages[] = {
109 2500000, 2850000, 3100000, 3300000,
110};
111
112#define TPS6586X_REGULATOR(_id, _ops, _pin_name, vdata, vreg, shift, nbits, \
113 ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
114 .desc = { \
115 .supply_name = _pin_name, \
116 .name = "REG-" #_id, \
117 .ops = &tps6586x_## _ops ## _regulator_ops, \
118 .type = REGULATOR_VOLTAGE, \
119 .id = TPS6586X_ID_##_id, \
120 .n_voltages = ARRAY_SIZE(vdata##_voltages), \
121 .volt_table = vdata##_voltages, \
122 .owner = THIS_MODULE, \
123 .enable_reg = TPS6586X_SUPPLY##ereg0, \
124 .enable_mask = 1 << (ebit0), \
125 .vsel_reg = TPS6586X_##vreg, \
126 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
127 .apply_reg = (goreg), \
128 .apply_bit = (gobit), \
129 }, \
130 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
131 .enable_bit[0] = (ebit0), \
132 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
133 .enable_bit[1] = (ebit1),
134
135#define TPS6586X_REGULATOR_LINEAR(_id, _ops, _pin_name, n_volt, min_uv, \
136 uv_step, vreg, shift, nbits, ereg0, \
137 ebit0, ereg1, ebit1, goreg, gobit) \
138 .desc = { \
139 .supply_name = _pin_name, \
140 .name = "REG-" #_id, \
141 .ops = &tps6586x_## _ops ## _regulator_ops, \
142 .type = REGULATOR_VOLTAGE, \
143 .id = TPS6586X_ID_##_id, \
144 .n_voltages = n_volt, \
145 .min_uV = min_uv, \
146 .uV_step = uv_step, \
147 .owner = THIS_MODULE, \
148 .enable_reg = TPS6586X_SUPPLY##ereg0, \
149 .enable_mask = 1 << (ebit0), \
150 .vsel_reg = TPS6586X_##vreg, \
151 .vsel_mask = ((1 << (nbits)) - 1) << (shift), \
152 .apply_reg = (goreg), \
153 .apply_bit = (gobit), \
154 }, \
155 .enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
156 .enable_bit[0] = (ebit0), \
157 .enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
158 .enable_bit[1] = (ebit1),
159
160#define TPS6586X_LDO(_id, _pname, vdata, vreg, shift, nbits, \
161 ereg0, ebit0, ereg1, ebit1) \
162{ \
163 TPS6586X_REGULATOR(_id, rw, _pname, vdata, vreg, shift, nbits, \
164 ereg0, ebit0, ereg1, ebit1, 0, 0) \
165}
166
167#define TPS6586X_LDO_LINEAR(_id, _pname, n_volt, min_uv, uv_step, vreg, \
168 shift, nbits, ereg0, ebit0, ereg1, ebit1) \
169{ \
170 TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
171 min_uv, uv_step, vreg, shift, nbits, \
172 ereg0, ebit0, ereg1, ebit1, 0, 0) \
173}
174
175#define TPS6586X_FIXED_LDO(_id, _pname, vdata, vreg, shift, nbits, \
176 ereg0, ebit0, ereg1, ebit1) \
177{ \
178 TPS6586X_REGULATOR(_id, ro, _pname, vdata, vreg, shift, nbits, \
179 ereg0, ebit0, ereg1, ebit1, 0, 0) \
180}
181
182#define TPS6586X_DVM(_id, _pname, n_volt, min_uv, uv_step, vreg, shift, \
183 nbits, ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
184{ \
185 TPS6586X_REGULATOR_LINEAR(_id, rw_linear, _pname, n_volt, \
186 min_uv, uv_step, vreg, shift, nbits, \
187 ereg0, ebit0, ereg1, ebit1, goreg, \
188 gobit) \
189}
190
191#define TPS6586X_SYS_REGULATOR() \
192{ \
193 .desc = { \
194 .supply_name = "sys", \
195 .name = "REG-SYS", \
196 .ops = &tps6586x_sys_regulator_ops, \
197 .type = REGULATOR_VOLTAGE, \
198 .id = TPS6586X_ID_SYS, \
199 .owner = THIS_MODULE, \
200 }, \
201}
202
203static struct tps6586x_regulator tps6586x_regulator[] = {
204 TPS6586X_SYS_REGULATOR(),
205 TPS6586X_LDO(LDO_0, "vinldo01", tps6586x_ldo0, SUPPLYV1, 5, 3, ENC, 0,
206 END, 0),
207 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo, SUPPLYV4, 0, 3, ENC, 2,
208 END, 2),
209 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo, SUPPLYV6, 0, 3, ENE, 6,
210 ENE, 6),
211 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo, SUPPLYV3, 0, 3, ENC, 4,
212 END, 4),
213 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo, SUPPLYV3, 3, 3, ENC, 5,
214 END, 5),
215 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo, SUPPLYV2, 5, 3, ENC, 6,
216 END, 6),
217 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo, SUPPLYV6, 3, 3, ENE, 7,
218 ENE, 7),
219 TPS6586X_LDO(LDO_RTC, "REG-SYS", tps6586x_ldo, SUPPLYV4, 3, 3, V4, 7,
220 V4, 7),
221 TPS6586X_LDO_LINEAR(LDO_1, "vinldo01", 32, 725000, 25000, SUPPLYV1,
222 0, 5, ENC, 1, END, 1),
223 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 3000000, 50000, SUPPLYV2,
224 0, 5, ENC, 7, END, 7),
225 TPS6586X_DVM(LDO_2, "vinldo23", 32, 725000, 25000, LDO2BV1, 0, 5,
226 ENA, 3, ENB, 3, TPS6586X_VCC2, BIT(6)),
227 TPS6586X_DVM(LDO_4, "vinldo4", 32, 1700000, 25000, LDO4V1, 0, 5,
228 ENC, 3, END, 3, TPS6586X_VCC1, BIT(6)),
229 TPS6586X_DVM(SM_0, "vin-sm0", 32, 725000, 25000, SM0V1, 0, 5,
230 ENA, 1, ENB, 1, TPS6586X_VCC1, BIT(2)),
231 TPS6586X_DVM(SM_1, "vin-sm1", 32, 725000, 25000, SM1V1, 0, 5,
232 ENA, 0, ENB, 0, TPS6586X_VCC1, BIT(0)),
233};
234
235static struct tps6586x_regulator tps658623_regulator[] = {
236 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1700000, 25000, SUPPLYV2,
237 0, 5, ENC, 7, END, 7),
238};
239
240static struct tps6586x_regulator tps658640_regulator[] = {
241 TPS6586X_LDO(LDO_3, "vinldo23", tps6586x_ldo0, SUPPLYV4, 0, 3,
242 ENC, 2, END, 2),
243 TPS6586X_LDO(LDO_5, "REG-SYS", tps6586x_ldo0, SUPPLYV6, 0, 3,
244 ENE, 6, ENE, 6),
245 TPS6586X_LDO(LDO_6, "vinldo678", tps6586x_ldo0, SUPPLYV3, 0, 3,
246 ENC, 4, END, 4),
247 TPS6586X_LDO(LDO_7, "vinldo678", tps6586x_ldo0, SUPPLYV3, 3, 3,
248 ENC, 5, END, 5),
249 TPS6586X_LDO(LDO_8, "vinldo678", tps6586x_ldo0, SUPPLYV2, 5, 3,
250 ENC, 6, END, 6),
251 TPS6586X_LDO(LDO_9, "vinldo9", tps6586x_ldo0, SUPPLYV6, 3, 3,
252 ENE, 7, ENE, 7),
253 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 2150000, 50000, SUPPLYV2,
254 0, 5, ENC, 7, END, 7),
255
256 TPS6586X_FIXED_LDO(LDO_RTC, "REG-SYS", tps658640_rtc, SUPPLYV4, 3, 2,
257 V4, 7, V4, 7),
258};
259
260static struct tps6586x_regulator tps658643_regulator[] = {
261 TPS6586X_LDO_LINEAR(SM_2, "vin-sm2", 32, 1025000, 25000, SUPPLYV2,
262 0, 5, ENC, 7, END, 7),
263};
264
265/*
266 * TPS6586X has 2 enable bits that are OR'ed to determine the actual
267 * regulator state. Clearing one of this bits allows switching
268 * regulator on and of with single register write.
269 */
270static inline int tps6586x_regulator_preinit(struct device *parent,
271 struct tps6586x_regulator *ri)
272{
273 uint8_t val1, val2;
274 int ret;
275
276 if (ri->enable_reg[0] == ri->enable_reg[1] &&
277 ri->enable_bit[0] == ri->enable_bit[1])
278 return 0;
279
280 ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
281 if (ret)
282 return ret;
283
284 ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
285 if (ret)
286 return ret;
287
288 if (!(val2 & (1 << ri->enable_bit[1])))
289 return 0;
290
291 /*
292 * The regulator is on, but it's enabled with the bit we don't
293 * want to use, so we switch the enable bits
294 */
295 if (!(val1 & (1 << ri->enable_bit[0]))) {
296 ret = tps6586x_set_bits(parent, ri->enable_reg[0],
297 1 << ri->enable_bit[0]);
298 if (ret)
299 return ret;
300 }
301
302 return tps6586x_clr_bits(parent, ri->enable_reg[1],
303 1 << ri->enable_bit[1]);
304}
305
306static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev,
307 int id, struct regulator_init_data *p)
308{
309 struct device *parent = pdev->dev.parent;
310 struct tps6586x_settings *setting = p->driver_data;
311 uint8_t reg;
312
313 if (setting == NULL)
314 return 0;
315
316 if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
317 return 0;
318
319 /* only SM0 and SM1 can have the slew rate settings */
320 switch (id) {
321 case TPS6586X_ID_SM_0:
322 reg = TPS6586X_SM0SL;
323 break;
324 case TPS6586X_ID_SM_1:
325 reg = TPS6586X_SM1SL;
326 break;
327 default:
328 dev_err(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
329 return -EINVAL;
330 }
331
332 return tps6586x_write(parent, reg,
333 setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
334}
335
336static struct tps6586x_regulator *find_regulator_info(int id, int version)
337{
338 struct tps6586x_regulator *ri;
339 struct tps6586x_regulator *table = NULL;
340 int num;
341 int i;
342
343 switch (version) {
344 case TPS658623:
345 table = tps658623_regulator;
346 num = ARRAY_SIZE(tps658623_regulator);
347 break;
348 case TPS658640:
349 case TPS658640v2:
350 table = tps658640_regulator;
351 num = ARRAY_SIZE(tps658640_regulator);
352 break;
353 case TPS658643:
354 table = tps658643_regulator;
355 num = ARRAY_SIZE(tps658643_regulator);
356 break;
357 }
358
359 /* Search version specific table first */
360 if (table) {
361 for (i = 0; i < num; i++) {
362 ri = &table[i];
363 if (ri->desc.id == id)
364 return ri;
365 }
366 }
367
368 for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
369 ri = &tps6586x_regulator[i];
370 if (ri->desc.id == id)
371 return ri;
372 }
373 return NULL;
374}
375
376#ifdef CONFIG_OF
377static struct of_regulator_match tps6586x_matches[] = {
378 { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
379 { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
380 { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
381 { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
382 { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
383 { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
384 { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
385 { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
386 { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
387 { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
388 { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
389 { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
390 { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
391 { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
392 { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
393};
394
395static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
396 struct platform_device *pdev,
397 struct of_regulator_match **tps6586x_reg_matches)
398{
399 const unsigned int num = ARRAY_SIZE(tps6586x_matches);
400 struct device_node *np = pdev->dev.parent->of_node;
401 struct device_node *regs;
402 const char *sys_rail = NULL;
403 unsigned int i;
404 struct tps6586x_platform_data *pdata;
405 int err;
406
407 regs = of_get_child_by_name(np, "regulators");
408 if (!regs) {
409 dev_err(&pdev->dev, "regulator node not found\n");
410 return NULL;
411 }
412
413 err = of_regulator_match(&pdev->dev, regs, tps6586x_matches, num);
414 of_node_put(regs);
415 if (err < 0) {
416 dev_err(&pdev->dev, "Regulator match failed, e %d\n", err);
417 return NULL;
418 }
419
420 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
421 if (!pdata)
422 return NULL;
423
424 for (i = 0; i < num; i++) {
425 uintptr_t id;
426 if (!tps6586x_matches[i].init_data)
427 continue;
428
429 pdata->reg_init_data[i] = tps6586x_matches[i].init_data;
430 id = (uintptr_t)tps6586x_matches[i].driver_data;
431 if (id == TPS6586X_ID_SYS)
432 sys_rail = pdata->reg_init_data[i]->constraints.name;
433
434 if ((id == TPS6586X_ID_LDO_5) || (id == TPS6586X_ID_LDO_RTC))
435 pdata->reg_init_data[i]->supply_regulator = sys_rail;
436 }
437 *tps6586x_reg_matches = tps6586x_matches;
438 return pdata;
439}
440#else
441static struct tps6586x_platform_data *tps6586x_parse_regulator_dt(
442 struct platform_device *pdev,
443 struct of_regulator_match **tps6586x_reg_matches)
444{
445 *tps6586x_reg_matches = NULL;
446 return NULL;
447}
448#endif
449
450static int tps6586x_regulator_probe(struct platform_device *pdev)
451{
452 struct tps6586x_regulator *ri = NULL;
453 struct regulator_config config = { };
454 struct regulator_dev *rdev;
455 struct regulator_init_data *reg_data;
456 struct tps6586x_platform_data *pdata;
457 struct of_regulator_match *tps6586x_reg_matches = NULL;
458 int version;
459 int id;
460 int err;
461
462 dev_dbg(&pdev->dev, "Probing regulator\n");
463
464 pdata = dev_get_platdata(pdev->dev.parent);
465 if ((!pdata) && (pdev->dev.parent->of_node))
466 pdata = tps6586x_parse_regulator_dt(pdev,
467 &tps6586x_reg_matches);
468
469 if (!pdata) {
470 dev_err(&pdev->dev, "Platform data not available, exiting\n");
471 return -ENODEV;
472 }
473
474 version = tps6586x_get_version(pdev->dev.parent);
475
476 for (id = 0; id < TPS6586X_ID_MAX_REGULATOR; ++id) {
477 reg_data = pdata->reg_init_data[id];
478
479 ri = find_regulator_info(id, version);
480
481 if (!ri) {
482 dev_err(&pdev->dev, "invalid regulator ID specified\n");
483 return -EINVAL;
484 }
485
486 err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
487 if (err) {
488 dev_err(&pdev->dev,
489 "regulator %d preinit failed, e %d\n", id, err);
490 return err;
491 }
492
493 config.dev = pdev->dev.parent;
494 config.init_data = reg_data;
495 config.driver_data = ri;
496
497 if (tps6586x_reg_matches)
498 config.of_node = tps6586x_reg_matches[id].of_node;
499
500 rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config);
501 if (IS_ERR(rdev)) {
502 dev_err(&pdev->dev, "failed to register regulator %s\n",
503 ri->desc.name);
504 return PTR_ERR(rdev);
505 }
506
507 if (reg_data) {
508 err = tps6586x_regulator_set_slew_rate(pdev, id,
509 reg_data);
510 if (err < 0) {
511 dev_err(&pdev->dev,
512 "Slew rate config failed, e %d\n", err);
513 return err;
514 }
515 }
516 }
517
518 platform_set_drvdata(pdev, rdev);
519 return 0;
520}
521
522static struct platform_driver tps6586x_regulator_driver = {
523 .driver = {
524 .name = "tps6586x-regulator",
525 },
526 .probe = tps6586x_regulator_probe,
527};
528
529static int __init tps6586x_regulator_init(void)
530{
531 return platform_driver_register(&tps6586x_regulator_driver);
532}
533subsys_initcall(tps6586x_regulator_init);
534
535static void __exit tps6586x_regulator_exit(void)
536{
537 platform_driver_unregister(&tps6586x_regulator_driver);
538}
539module_exit(tps6586x_regulator_exit);
540
541MODULE_LICENSE("GPL");
542MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
543MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
544MODULE_ALIAS("platform:tps6586x-regulator");