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Merge tag 'wireless-2023-08-09' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-block.git] / drivers / regulator / wm831x-ldo.c
CommitLineData
3cad5fc8
AL		 1// SPDX-License-Identifier: GPL-2.0+
2//
3// wm831x-ldo.c -- LDO driver for the WM831x series
4//
5// Copyright 2009 Wolfson Microelectronics PLC.
6//
7// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
d1c6b4fe
MB		 8
9#include <linux/module.h>
10#include <linux/moduleparam.h>
11#include <linux/init.h>
12#include <linux/bitops.h>
13#include <linux/err.h>
14#include <linux/i2c.h>
15#include <linux/platform_device.h>
16#include <linux/regulator/driver.h>
5a0e3ad6 17#include <linux/slab.h>
d1c6b4fe
MB		 18
19#include <linux/mfd/wm831x/core.h>
20#include <linux/mfd/wm831x/regulator.h>
21#include <linux/mfd/wm831x/pdata.h>
22
f1aba13f 23#define WM831X_LDO_MAX_NAME 9
d1c6b4fe
MB		 24
25#define WM831X_LDO_CONTROL 0
26#define WM831X_LDO_ON_CONTROL 1
27#define WM831X_LDO_SLEEP_CONTROL 2
28
29#define WM831X_ALIVE_LDO_ON_CONTROL 0
30#define WM831X_ALIVE_LDO_SLEEP_CONTROL 1
31
32struct wm831x_ldo {
33 char name[WM831X_LDO_MAX_NAME];
f1aba13f 34 char supply_name[WM831X_LDO_MAX_NAME];
d1c6b4fe
MB		 35 struct regulator_desc desc;
36 int base;
37 struct wm831x *wm831x;
38 struct regulator_dev *regulator;
39};
40
41/*
42 * Shared
43 */
44
d1c6b4fe
MB		 45static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data)
46{
47 struct wm831x_ldo *ldo = data;
48
49 regulator_notifier_call_chain(ldo->regulator,
50 REGULATOR_EVENT_UNDER_VOLTAGE,
51 NULL);
52
53 return IRQ_HANDLED;
54}
55
56/*
57 * General purpose LDOs
58 */
59
60ab7f41 60static const struct linear_range wm831x_gp_ldo_ranges[] = {
8828bae4
AL		 61 REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000),
62 REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000),
5ff26a14 63};
d1c6b4fe
MB		 64
65static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
66 int uV)
67{
68 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
0a479689
AL		 69 struct wm831x *wm831x = ldo->wm831x;
70 int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
d1c6b4fe 71
5ff26a14 72 sel = regulator_map_voltage_linear_range(rdev, uV, uV);
0a479689
AL		 73 if (sel < 0)
74 return sel;
75
76 return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, sel);
d1c6b4fe
MB		 77}
78
d1c6b4fe
MB		 79static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev)
80{
81 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
82 struct wm831x *wm831x = ldo->wm831x;
83 int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
84 int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
9a767d43 85 int ret;
d1c6b4fe
MB		 86
87 ret = wm831x_reg_read(wm831x, on_reg);
88 if (ret < 0)
9a767d43 89 return ret;
d1c6b4fe
MB		 90
91 if (!(ret & WM831X_LDO1_ON_MODE))
92 return REGULATOR_MODE_NORMAL;
93
94 ret = wm831x_reg_read(wm831x, ctrl_reg);
95 if (ret < 0)
9a767d43 96 return ret;
d1c6b4fe
MB		 97
98 if (ret & WM831X_LDO1_LP_MODE)
99 return REGULATOR_MODE_STANDBY;
100 else
101 return REGULATOR_MODE_IDLE;
102}
103
104static int wm831x_gp_ldo_set_mode(struct regulator_dev *rdev,
105 unsigned int mode)
106{
107 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
108 struct wm831x *wm831x = ldo->wm831x;
109 int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
110 int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
111 int ret;
112
113
114 switch (mode) {
115 case REGULATOR_MODE_NORMAL:
116 ret = wm831x_set_bits(wm831x, on_reg,
117 WM831X_LDO1_ON_MODE, 0);
118 if (ret < 0)
119 return ret;
120 break;
121
122 case REGULATOR_MODE_IDLE:
123 ret = wm831x_set_bits(wm831x, ctrl_reg,
e260999c 124 WM831X_LDO1_LP_MODE, 0);
d1c6b4fe
MB		 125 if (ret < 0)
126 return ret;
127
128 ret = wm831x_set_bits(wm831x, on_reg,
129 WM831X_LDO1_ON_MODE,
130 WM831X_LDO1_ON_MODE);
131 if (ret < 0)
132 return ret;
e260999c 133 break;
d1c6b4fe
MB		 134
135 case REGULATOR_MODE_STANDBY:
136 ret = wm831x_set_bits(wm831x, ctrl_reg,
e260999c
AL		 137 WM831X_LDO1_LP_MODE,
138 WM831X_LDO1_LP_MODE);
d1c6b4fe
MB		 139 if (ret < 0)
140 return ret;
141
142 ret = wm831x_set_bits(wm831x, on_reg,
143 WM831X_LDO1_ON_MODE,
144 WM831X_LDO1_ON_MODE);
145 if (ret < 0)
146 return ret;
147 break;
148
149 default:
150 return -EINVAL;
151 }
152
153 return 0;
154}
155
156static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev)
157{
158 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
159 struct wm831x *wm831x = ldo->wm831x;
160 int mask = 1 << rdev_get_id(rdev);
161 int ret;
162
163 /* Is the regulator on? */
164 ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
165 if (ret < 0)
166 return ret;
167 if (!(ret & mask))
168 return REGULATOR_STATUS_OFF;
169
170 /* Is it reporting under voltage? */
171 ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
363506cd
AL		 172 if (ret < 0)
173 return ret;
d1c6b4fe
MB		 174 if (ret & mask)
175 return REGULATOR_STATUS_ERROR;
176
177 ret = wm831x_gp_ldo_get_mode(rdev);
178 if (ret < 0)
179 return ret;
180 else
181 return regulator_mode_to_status(ret);
182}
183
184static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev,
185 int input_uV,
186 int output_uV, int load_uA)
187{
188 if (load_uA < 20000)
189 return REGULATOR_MODE_STANDBY;
190 if (load_uA < 50000)
191 return REGULATOR_MODE_IDLE;
192 return REGULATOR_MODE_NORMAL;
193}
194
195
b0d6dd3b 196static const struct regulator_ops wm831x_gp_ldo_ops = {
5ff26a14
MB		 197 .list_voltage = regulator_list_voltage_linear_range,
198 .map_voltage = regulator_map_voltage_linear_range,
ac663b47 199 .get_voltage_sel = regulator_get_voltage_sel_regmap,
0a479689 200 .set_voltage_sel = regulator_set_voltage_sel_regmap,
d1c6b4fe
MB		 201 .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage,
202 .get_mode = wm831x_gp_ldo_get_mode,
203 .set_mode = wm831x_gp_ldo_set_mode,
204 .get_status = wm831x_gp_ldo_get_status,
205 .get_optimum_mode = wm831x_gp_ldo_get_optimum_mode,
22c5fb6a
MB		 206 .get_bypass = regulator_get_bypass_regmap,
207 .set_bypass = regulator_set_bypass_regmap,
d1c6b4fe 208
ca8c361b
MB		 209 .is_enabled = regulator_is_enabled_regmap,
210 .enable = regulator_enable_regmap,
211 .disable = regulator_disable_regmap,
d1c6b4fe
MB		 212};
213
a5023574 214static int wm831x_gp_ldo_probe(struct platform_device *pdev)
d1c6b4fe
MB		 215{
216 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
dff91d0b 217 struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
c172708d 218 struct regulator_config config = { };
137a6354 219 int id;
d1c6b4fe
MB		 220 struct wm831x_ldo *ldo;
221 struct resource *res;
222 int ret, irq;
223
137a6354
MB		 224 if (pdata && pdata->wm831x_num)
225 id = (pdata->wm831x_num * 10) + 1;
226 else
227 id = 0;
228 id = pdev->id - id;
229
d1c6b4fe
MB		 230 dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
231
fded2f4f 232 ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
fae3b836 233 if (!ldo)
d1c6b4fe 234 return -ENOMEM;
d1c6b4fe
MB		 235
236 ldo->wm831x = wm831x;
237
5656098e 238 res = platform_get_resource(pdev, IORESOURCE_REG, 0);
d1c6b4fe 239 if (res == NULL) {
5656098e 240 dev_err(&pdev->dev, "No REG resource\n");
d1c6b4fe
MB		 241 ret = -EINVAL;
242 goto err;
243 }
244 ldo->base = res->start;
245
246 snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
247 ldo->desc.name = ldo->name;
f1aba13f
MB		 248
249 snprintf(ldo->supply_name, sizeof(ldo->supply_name),
250 "LDO%dVDD", id + 1);
251 ldo->desc.supply_name = ldo->supply_name;
252
d1c6b4fe
MB		 253 ldo->desc.id = id;
254 ldo->desc.type = REGULATOR_VOLTAGE;
5ff26a14 255 ldo->desc.n_voltages = 32;
d1c6b4fe
MB		 256 ldo->desc.ops = &wm831x_gp_ldo_ops;
257 ldo->desc.owner = THIS_MODULE;
ac663b47
MB		 258 ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
259 ldo->desc.vsel_mask = WM831X_LDO1_ON_VSEL_MASK;
ca8c361b
MB		 260 ldo->desc.enable_reg = WM831X_LDO_ENABLE;
261 ldo->desc.enable_mask = 1 << id;
22c5fb6a
MB		 262 ldo->desc.bypass_reg = ldo->base;
263 ldo->desc.bypass_mask = WM831X_LDO1_SWI;
5ff26a14
MB		 264 ldo->desc.linear_ranges = wm831x_gp_ldo_ranges;
265 ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges);
d1c6b4fe 266
c172708d 267 config.dev = pdev->dev.parent;
b7ca8788
MB		 268 if (pdata)
269 config.init_data = pdata->ldo[id];
c172708d 270 config.driver_data = ldo;
ac663b47 271 config.regmap = wm831x->regmap;
c172708d 272
fc7c60e3
MB		 273 ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
274 &config);
d1c6b4fe
MB		 275 if (IS_ERR(ldo->regulator)) {
276 ret = PTR_ERR(ldo->regulator);
277 dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
278 id + 1, ret);
279 goto err;
280 }
281
cd99758b 282 irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
41c7a879
MB		 283 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
284 wm831x_ldo_uv_irq,
29454738
FE		 285 IRQF_TRIGGER_RISING | IRQF_ONESHOT,
286 ldo->name,
41c7a879 287 ldo);
d1c6b4fe
MB		 288 if (ret != 0) {
289 dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
290 irq, ret);
fc7c60e3 291 goto err;
d1c6b4fe
MB		 292 }
293
294 platform_set_drvdata(pdev, ldo);
295
296 return 0;
297
d1c6b4fe 298err:
d1c6b4fe
MB		 299 return ret;
300}
301
d1c6b4fe
MB		 302static struct platform_driver wm831x_gp_ldo_driver = {
303 .probe = wm831x_gp_ldo_probe,
d1c6b4fe
MB		 304 .driver = {
305 .name = "wm831x-ldo",
259b93b2 306 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
d1c6b4fe
MB		 307 },
308};
309
310/*
311 * Analogue LDOs
312 */
313
60ab7f41 314static const struct linear_range wm831x_aldo_ranges[] = {
8828bae4
AL		 315 REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000),
316 REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000),
5ff26a14 317};
d1c6b4fe
MB		 318
319static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
320 int uV)
321{
322 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
0a479689
AL		 323 struct wm831x *wm831x = ldo->wm831x;
324 int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
325
5ff26a14 326 sel = regulator_map_voltage_linear_range(rdev, uV, uV);
0a479689
AL		 327 if (sel < 0)
328 return sel;
d1c6b4fe 329
0a479689 330 return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, sel);
d1c6b4fe
MB		 331}
332
d1c6b4fe
MB		 333static unsigned int wm831x_aldo_get_mode(struct regulator_dev *rdev)
334{
335 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
336 struct wm831x *wm831x = ldo->wm831x;
337 int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
6f17c652 338 int ret;
d1c6b4fe
MB		 339
340 ret = wm831x_reg_read(wm831x, on_reg);
341 if (ret < 0)
342 return 0;
343
344 if (ret & WM831X_LDO7_ON_MODE)
345 return REGULATOR_MODE_IDLE;
346 else
347 return REGULATOR_MODE_NORMAL;
348}
349
350static int wm831x_aldo_set_mode(struct regulator_dev *rdev,
351 unsigned int mode)
352{
353 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
354 struct wm831x *wm831x = ldo->wm831x;
d1c6b4fe
MB		 355 int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
356 int ret;
357
358
359 switch (mode) {
360 case REGULATOR_MODE_NORMAL:
e841a36a 361 ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, 0);
d1c6b4fe
MB		 362 if (ret < 0)
363 return ret;
364 break;
365
366 case REGULATOR_MODE_IDLE:
e841a36a 367 ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE,
d1c6b4fe
MB		 368 WM831X_LDO7_ON_MODE);
369 if (ret < 0)
370 return ret;
371 break;
372
373 default:
374 return -EINVAL;
375 }
376
377 return 0;
378}
379
380static int wm831x_aldo_get_status(struct regulator_dev *rdev)
381{
382 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
383 struct wm831x *wm831x = ldo->wm831x;
384 int mask = 1 << rdev_get_id(rdev);
385 int ret;
386
387 /* Is the regulator on? */
388 ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
389 if (ret < 0)
390 return ret;
391 if (!(ret & mask))
392 return REGULATOR_STATUS_OFF;
393
394 /* Is it reporting under voltage? */
395 ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
363506cd
AL		 396 if (ret < 0)
397 return ret;
d1c6b4fe
MB		 398 if (ret & mask)
399 return REGULATOR_STATUS_ERROR;
400
401 ret = wm831x_aldo_get_mode(rdev);
402 if (ret < 0)
403 return ret;
404 else
405 return regulator_mode_to_status(ret);
406}
407
b0d6dd3b 408static const struct regulator_ops wm831x_aldo_ops = {
5ff26a14
MB		 409 .list_voltage = regulator_list_voltage_linear_range,
410 .map_voltage = regulator_map_voltage_linear_range,
ac663b47 411 .get_voltage_sel = regulator_get_voltage_sel_regmap,
0a479689 412 .set_voltage_sel = regulator_set_voltage_sel_regmap,
d1c6b4fe
MB		 413 .set_suspend_voltage = wm831x_aldo_set_suspend_voltage,
414 .get_mode = wm831x_aldo_get_mode,
415 .set_mode = wm831x_aldo_set_mode,
416 .get_status = wm831x_aldo_get_status,
22c5fb6a
MB		 417 .set_bypass = regulator_set_bypass_regmap,
418 .get_bypass = regulator_get_bypass_regmap,
d1c6b4fe 419
ca8c361b
MB		 420 .is_enabled = regulator_is_enabled_regmap,
421 .enable = regulator_enable_regmap,
422 .disable = regulator_disable_regmap,
d1c6b4fe
MB		 423};
424
a5023574 425static int wm831x_aldo_probe(struct platform_device *pdev)
d1c6b4fe
MB		 426{
427 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
dff91d0b 428 struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
c172708d 429 struct regulator_config config = { };
137a6354 430 int id;
d1c6b4fe
MB		 431 struct wm831x_ldo *ldo;
432 struct resource *res;
433 int ret, irq;
434
137a6354
MB		 435 if (pdata && pdata->wm831x_num)
436 id = (pdata->wm831x_num * 10) + 1;
437 else
438 id = 0;
439 id = pdev->id - id;
440
d1c6b4fe
MB		 441 dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
442
fded2f4f 443 ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
fae3b836 444 if (!ldo)
d1c6b4fe 445 return -ENOMEM;
d1c6b4fe
MB		 446
447 ldo->wm831x = wm831x;
448
5656098e 449 res = platform_get_resource(pdev, IORESOURCE_REG, 0);
d1c6b4fe 450 if (res == NULL) {
5656098e 451 dev_err(&pdev->dev, "No REG resource\n");
d1c6b4fe
MB		 452 ret = -EINVAL;
453 goto err;
454 }
455 ldo->base = res->start;
456
457 snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
458 ldo->desc.name = ldo->name;
f1aba13f
MB		 459
460 snprintf(ldo->supply_name, sizeof(ldo->supply_name),
461 "LDO%dVDD", id + 1);
462 ldo->desc.supply_name = ldo->supply_name;
463
d1c6b4fe
MB		 464 ldo->desc.id = id;
465 ldo->desc.type = REGULATOR_VOLTAGE;
5ff26a14
MB		 466 ldo->desc.n_voltages = 32;
467 ldo->desc.linear_ranges = wm831x_aldo_ranges;
468 ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges);
d1c6b4fe
MB		 469 ldo->desc.ops = &wm831x_aldo_ops;
470 ldo->desc.owner = THIS_MODULE;
ac663b47
MB		 471 ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
472 ldo->desc.vsel_mask = WM831X_LDO7_ON_VSEL_MASK;
ca8c361b
MB		 473 ldo->desc.enable_reg = WM831X_LDO_ENABLE;
474 ldo->desc.enable_mask = 1 << id;
22c5fb6a
MB		 475 ldo->desc.bypass_reg = ldo->base;
476 ldo->desc.bypass_mask = WM831X_LDO7_SWI;
d1c6b4fe 477
c172708d 478 config.dev = pdev->dev.parent;
b7ca8788
MB		 479 if (pdata)
480 config.init_data = pdata->ldo[id];
c172708d 481 config.driver_data = ldo;
ac663b47 482 config.regmap = wm831x->regmap;
c172708d 483
fc7c60e3
MB		 484 ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
485 &config);
d1c6b4fe
MB		 486 if (IS_ERR(ldo->regulator)) {
487 ret = PTR_ERR(ldo->regulator);
488 dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
489 id + 1, ret);
490 goto err;
491 }
492
cd99758b 493 irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
41c7a879
MB		 494 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
495 wm831x_ldo_uv_irq,
29454738
FE		 496 IRQF_TRIGGER_RISING | IRQF_ONESHOT,
497 ldo->name, ldo);
d1c6b4fe
MB		 498 if (ret != 0) {
499 dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
500 irq, ret);
fc7c60e3 501 goto err;
d1c6b4fe
MB		 502 }
503
504 platform_set_drvdata(pdev, ldo);
505
506 return 0;
507
d1c6b4fe 508err:
d1c6b4fe
MB		 509 return ret;
510}
511
d1c6b4fe
MB		 512static struct platform_driver wm831x_aldo_driver = {
513 .probe = wm831x_aldo_probe,
d1c6b4fe
MB		 514 .driver = {
515 .name = "wm831x-aldo",
259b93b2 516 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
d1c6b4fe
MB		 517 },
518};
519
520/*
521 * Alive LDO
522 */
523
524#define WM831X_ALIVE_LDO_MAX_SELECTOR 0xf
525
d1c6b4fe
MB		 526static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev,
527 int uV)
528{
529 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
0a479689
AL		 530 struct wm831x *wm831x = ldo->wm831x;
531 int sel, reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL;
532
533 sel = regulator_map_voltage_linear(rdev, uV, uV);
534 if (sel < 0)
535 return sel;
d1c6b4fe 536
0a479689 537 return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, sel);
d1c6b4fe
MB		 538}
539
d1c6b4fe
MB		 540static int wm831x_alive_ldo_get_status(struct regulator_dev *rdev)
541{
542 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
543 struct wm831x *wm831x = ldo->wm831x;
544 int mask = 1 << rdev_get_id(rdev);
545 int ret;
546
547 /* Is the regulator on? */
548 ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
549 if (ret < 0)
550 return ret;
551 if (ret & mask)
552 return REGULATOR_STATUS_ON;
553 else
554 return REGULATOR_STATUS_OFF;
555}
556
b0d6dd3b 557static const struct regulator_ops wm831x_alive_ldo_ops = {
d31e954e 558 .list_voltage = regulator_list_voltage_linear,
c2543b5f 559 .map_voltage = regulator_map_voltage_linear,
ac663b47 560 .get_voltage_sel = regulator_get_voltage_sel_regmap,
0a479689 561 .set_voltage_sel = regulator_set_voltage_sel_regmap,
d1c6b4fe
MB		 562 .set_suspend_voltage = wm831x_alive_ldo_set_suspend_voltage,
563 .get_status = wm831x_alive_ldo_get_status,
564
ca8c361b
MB		 565 .is_enabled = regulator_is_enabled_regmap,
566 .enable = regulator_enable_regmap,
567 .disable = regulator_disable_regmap,
d1c6b4fe
MB		 568};
569
a5023574 570static int wm831x_alive_ldo_probe(struct platform_device *pdev)
d1c6b4fe
MB		 571{
572 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
dff91d0b 573 struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
c172708d 574 struct regulator_config config = { };
137a6354 575 int id;
d1c6b4fe
MB		 576 struct wm831x_ldo *ldo;
577 struct resource *res;
578 int ret;
579
137a6354
MB		 580 if (pdata && pdata->wm831x_num)
581 id = (pdata->wm831x_num * 10) + 1;
582 else
583 id = 0;
584 id = pdev->id - id;
585
586
d1c6b4fe
MB		 587 dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
588
fded2f4f 589 ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
fae3b836 590 if (!ldo)
d1c6b4fe 591 return -ENOMEM;
d1c6b4fe
MB		 592
593 ldo->wm831x = wm831x;
594
5656098e 595 res = platform_get_resource(pdev, IORESOURCE_REG, 0);
d1c6b4fe 596 if (res == NULL) {
5656098e 597 dev_err(&pdev->dev, "No REG resource\n");
d1c6b4fe
MB		 598 ret = -EINVAL;
599 goto err;
600 }
601 ldo->base = res->start;
602
603 snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
604 ldo->desc.name = ldo->name;
f1aba13f
MB		 605
606 snprintf(ldo->supply_name, sizeof(ldo->supply_name),
607 "LDO%dVDD", id + 1);
608 ldo->desc.supply_name = ldo->supply_name;
609
d1c6b4fe
MB		 610 ldo->desc.id = id;
611 ldo->desc.type = REGULATOR_VOLTAGE;
612 ldo->desc.n_voltages = WM831X_ALIVE_LDO_MAX_SELECTOR + 1;
613 ldo->desc.ops = &wm831x_alive_ldo_ops;
614 ldo->desc.owner = THIS_MODULE;
ac663b47
MB		 615 ldo->desc.vsel_reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL;
616 ldo->desc.vsel_mask = WM831X_LDO11_ON_VSEL_MASK;
ca8c361b
MB		 617 ldo->desc.enable_reg = WM831X_LDO_ENABLE;
618 ldo->desc.enable_mask = 1 << id;
d31e954e
MB		 619 ldo->desc.min_uV = 800000;
620 ldo->desc.uV_step = 50000;
eefaa3c6 621 ldo->desc.enable_time = 1000;
d1c6b4fe 622
c172708d 623 config.dev = pdev->dev.parent;
b7ca8788
MB		 624 if (pdata)
625 config.init_data = pdata->ldo[id];
c172708d 626 config.driver_data = ldo;
ac663b47 627 config.regmap = wm831x->regmap;
c172708d 628
fc7c60e3
MB		 629 ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
630 &config);
d1c6b4fe
MB		 631 if (IS_ERR(ldo->regulator)) {
632 ret = PTR_ERR(ldo->regulator);
633 dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
634 id + 1, ret);
635 goto err;
636 }
637
638 platform_set_drvdata(pdev, ldo);
639
640 return 0;
641
642err:
d1c6b4fe
MB		 643 return ret;
644}
645
d1c6b4fe
MB		 646static struct platform_driver wm831x_alive_ldo_driver = {
647 .probe = wm831x_alive_ldo_probe,
d1c6b4fe
MB		 648 .driver = {
649 .name = "wm831x-alive-ldo",
259b93b2 650 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
d1c6b4fe
MB		 651 },
652};
653
92a513b7
TR		 654static struct platform_driver * const drivers[] = {
655 &wm831x_gp_ldo_driver,
656 &wm831x_aldo_driver,
657 &wm831x_alive_ldo_driver,
658};
659
d1c6b4fe
MB		 660static int __init wm831x_ldo_init(void)
661{
92a513b7 662 return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
d1c6b4fe
MB		 663}
664subsys_initcall(wm831x_ldo_init);
665
666static void __exit wm831x_ldo_exit(void)
667{
92a513b7 668 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
d1c6b4fe
MB		 669}
670module_exit(wm831x_ldo_exit);
671
672/* Module information */
673MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
674MODULE_DESCRIPTION("WM831x LDO driver");
675MODULE_LICENSE("GPL");
676MODULE_ALIAS("platform:wm831x-ldo");
677MODULE_ALIAS("platform:wm831x-aldo");
678MODULE_ALIAS("platform:wm831x-aliveldo");
Linux 6.x block layer and io_uring tree(s)