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rtlwifi: No need to export rtl_evm_dbm_jaguar anymore
[deliverable/linux.git] / drivers / regulator / wm831x-ldo.c
CommitLineData
d1c6b4fe
MB		 1/*
2 * wm831x-ldo.c -- LDO driver for the WM831x series
3 *
4 * Copyright 2009 Wolfson Microelectronics PLC.
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/init.h>
17#include <linux/bitops.h>
18#include <linux/err.h>
19#include <linux/i2c.h>
20#include <linux/platform_device.h>
21#include <linux/regulator/driver.h>
5a0e3ad6 22#include <linux/slab.h>
d1c6b4fe
MB		 23
24#include <linux/mfd/wm831x/core.h>
25#include <linux/mfd/wm831x/regulator.h>
26#include <linux/mfd/wm831x/pdata.h>
27
f1aba13f 28#define WM831X_LDO_MAX_NAME 9
d1c6b4fe
MB		 29
30#define WM831X_LDO_CONTROL 0
31#define WM831X_LDO_ON_CONTROL 1
32#define WM831X_LDO_SLEEP_CONTROL 2
33
34#define WM831X_ALIVE_LDO_ON_CONTROL 0
35#define WM831X_ALIVE_LDO_SLEEP_CONTROL 1
36
37struct wm831x_ldo {
38 char name[WM831X_LDO_MAX_NAME];
f1aba13f 39 char supply_name[WM831X_LDO_MAX_NAME];
d1c6b4fe
MB		 40 struct regulator_desc desc;
41 int base;
42 struct wm831x *wm831x;
43 struct regulator_dev *regulator;
44};
45
46/*
47 * Shared
48 */
49
d1c6b4fe
MB		 50static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data)
51{
52 struct wm831x_ldo *ldo = data;
53
54 regulator_notifier_call_chain(ldo->regulator,
55 REGULATOR_EVENT_UNDER_VOLTAGE,
56 NULL);
57
58 return IRQ_HANDLED;
59}
60
61/*
62 * General purpose LDOs
63 */
64
5ff26a14 65static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = {
8828bae4
AL		 66 REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000),
67 REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000),
5ff26a14 68};
d1c6b4fe
MB		 69
70static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
71 int uV)
72{
73 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
0a479689
AL		 74 struct wm831x *wm831x = ldo->wm831x;
75 int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
d1c6b4fe 76
5ff26a14 77 sel = regulator_map_voltage_linear_range(rdev, uV, uV);
0a479689
AL		 78 if (sel < 0)
79 return sel;
80
81 return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, sel);
d1c6b4fe
MB		 82}
83
d1c6b4fe
MB		 84static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev)
85{
86 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
87 struct wm831x *wm831x = ldo->wm831x;
88 int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
89 int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
9a767d43 90 int ret;
d1c6b4fe
MB		 91
92 ret = wm831x_reg_read(wm831x, on_reg);
93 if (ret < 0)
9a767d43 94 return ret;
d1c6b4fe
MB		 95
96 if (!(ret & WM831X_LDO1_ON_MODE))
97 return REGULATOR_MODE_NORMAL;
98
99 ret = wm831x_reg_read(wm831x, ctrl_reg);
100 if (ret < 0)
9a767d43 101 return ret;
d1c6b4fe
MB		 102
103 if (ret & WM831X_LDO1_LP_MODE)
104 return REGULATOR_MODE_STANDBY;
105 else
106 return REGULATOR_MODE_IDLE;
107}
108
109static int wm831x_gp_ldo_set_mode(struct regulator_dev *rdev,
110 unsigned int mode)
111{
112 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
113 struct wm831x *wm831x = ldo->wm831x;
114 int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
115 int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
116 int ret;
117
118
119 switch (mode) {
120 case REGULATOR_MODE_NORMAL:
121 ret = wm831x_set_bits(wm831x, on_reg,
122 WM831X_LDO1_ON_MODE, 0);
123 if (ret < 0)
124 return ret;
125 break;
126
127 case REGULATOR_MODE_IDLE:
128 ret = wm831x_set_bits(wm831x, ctrl_reg,
e260999c 129 WM831X_LDO1_LP_MODE, 0);
d1c6b4fe
MB		 130 if (ret < 0)
131 return ret;
132
133 ret = wm831x_set_bits(wm831x, on_reg,
134 WM831X_LDO1_ON_MODE,
135 WM831X_LDO1_ON_MODE);
136 if (ret < 0)
137 return ret;
e260999c 138 break;
d1c6b4fe
MB		 139
140 case REGULATOR_MODE_STANDBY:
141 ret = wm831x_set_bits(wm831x, ctrl_reg,
e260999c
AL		 142 WM831X_LDO1_LP_MODE,
143 WM831X_LDO1_LP_MODE);
d1c6b4fe
MB		 144 if (ret < 0)
145 return ret;
146
147 ret = wm831x_set_bits(wm831x, on_reg,
148 WM831X_LDO1_ON_MODE,
149 WM831X_LDO1_ON_MODE);
150 if (ret < 0)
151 return ret;
152 break;
153
154 default:
155 return -EINVAL;
156 }
157
158 return 0;
159}
160
161static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev)
162{
163 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
164 struct wm831x *wm831x = ldo->wm831x;
165 int mask = 1 << rdev_get_id(rdev);
166 int ret;
167
168 /* Is the regulator on? */
169 ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
170 if (ret < 0)
171 return ret;
172 if (!(ret & mask))
173 return REGULATOR_STATUS_OFF;
174
175 /* Is it reporting under voltage? */
176 ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
363506cd
AL		 177 if (ret < 0)
178 return ret;
d1c6b4fe
MB		 179 if (ret & mask)
180 return REGULATOR_STATUS_ERROR;
181
182 ret = wm831x_gp_ldo_get_mode(rdev);
183 if (ret < 0)
184 return ret;
185 else
186 return regulator_mode_to_status(ret);
187}
188
189static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev,
190 int input_uV,
191 int output_uV, int load_uA)
192{
193 if (load_uA < 20000)
194 return REGULATOR_MODE_STANDBY;
195 if (load_uA < 50000)
196 return REGULATOR_MODE_IDLE;
197 return REGULATOR_MODE_NORMAL;
198}
199
200
201static struct regulator_ops wm831x_gp_ldo_ops = {
5ff26a14
MB		 202 .list_voltage = regulator_list_voltage_linear_range,
203 .map_voltage = regulator_map_voltage_linear_range,
ac663b47 204 .get_voltage_sel = regulator_get_voltage_sel_regmap,
0a479689 205 .set_voltage_sel = regulator_set_voltage_sel_regmap,
d1c6b4fe
MB		 206 .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage,
207 .get_mode = wm831x_gp_ldo_get_mode,
208 .set_mode = wm831x_gp_ldo_set_mode,
209 .get_status = wm831x_gp_ldo_get_status,
210 .get_optimum_mode = wm831x_gp_ldo_get_optimum_mode,
22c5fb6a
MB		 211 .get_bypass = regulator_get_bypass_regmap,
212 .set_bypass = regulator_set_bypass_regmap,
d1c6b4fe 213
ca8c361b
MB		 214 .is_enabled = regulator_is_enabled_regmap,
215 .enable = regulator_enable_regmap,
216 .disable = regulator_disable_regmap,
d1c6b4fe
MB		 217};
218
a5023574 219static int wm831x_gp_ldo_probe(struct platform_device *pdev)
d1c6b4fe
MB		 220{
221 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
dff91d0b 222 struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
c172708d 223 struct regulator_config config = { };
137a6354 224 int id;
d1c6b4fe
MB		 225 struct wm831x_ldo *ldo;
226 struct resource *res;
227 int ret, irq;
228
137a6354
MB		 229 if (pdata && pdata->wm831x_num)
230 id = (pdata->wm831x_num * 10) + 1;
231 else
232 id = 0;
233 id = pdev->id - id;
234
d1c6b4fe
MB		 235 dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
236
fded2f4f 237 ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
fae3b836 238 if (!ldo)
d1c6b4fe 239 return -ENOMEM;
d1c6b4fe
MB		 240
241 ldo->wm831x = wm831x;
242
5656098e 243 res = platform_get_resource(pdev, IORESOURCE_REG, 0);
d1c6b4fe 244 if (res == NULL) {
5656098e 245 dev_err(&pdev->dev, "No REG resource\n");
d1c6b4fe
MB		 246 ret = -EINVAL;
247 goto err;
248 }
249 ldo->base = res->start;
250
251 snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
252 ldo->desc.name = ldo->name;
f1aba13f
MB		 253
254 snprintf(ldo->supply_name, sizeof(ldo->supply_name),
255 "LDO%dVDD", id + 1);
256 ldo->desc.supply_name = ldo->supply_name;
257
d1c6b4fe
MB		 258 ldo->desc.id = id;
259 ldo->desc.type = REGULATOR_VOLTAGE;
5ff26a14 260 ldo->desc.n_voltages = 32;
d1c6b4fe
MB		 261 ldo->desc.ops = &wm831x_gp_ldo_ops;
262 ldo->desc.owner = THIS_MODULE;
ac663b47
MB		 263 ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
264 ldo->desc.vsel_mask = WM831X_LDO1_ON_VSEL_MASK;
ca8c361b
MB		 265 ldo->desc.enable_reg = WM831X_LDO_ENABLE;
266 ldo->desc.enable_mask = 1 << id;
22c5fb6a
MB		 267 ldo->desc.bypass_reg = ldo->base;
268 ldo->desc.bypass_mask = WM831X_LDO1_SWI;
5ff26a14
MB		 269 ldo->desc.linear_ranges = wm831x_gp_ldo_ranges;
270 ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges);
d1c6b4fe 271
c172708d 272 config.dev = pdev->dev.parent;
b7ca8788
MB		 273 if (pdata)
274 config.init_data = pdata->ldo[id];
c172708d 275 config.driver_data = ldo;
ac663b47 276 config.regmap = wm831x->regmap;
c172708d 277
fc7c60e3
MB		 278 ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
279 &config);
d1c6b4fe
MB		 280 if (IS_ERR(ldo->regulator)) {
281 ret = PTR_ERR(ldo->regulator);
282 dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
283 id + 1, ret);
284 goto err;
285 }
286
cd99758b 287 irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
41c7a879
MB		 288 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
289 wm831x_ldo_uv_irq,
290 IRQF_TRIGGER_RISING, ldo->name,
291 ldo);
d1c6b4fe
MB		 292 if (ret != 0) {
293 dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
294 irq, ret);
fc7c60e3 295 goto err;
d1c6b4fe
MB		 296 }
297
298 platform_set_drvdata(pdev, ldo);
299
300 return 0;
301
d1c6b4fe 302err:
d1c6b4fe
MB		 303 return ret;
304}
305
d1c6b4fe
MB		 306static struct platform_driver wm831x_gp_ldo_driver = {
307 .probe = wm831x_gp_ldo_probe,
d1c6b4fe
MB		 308 .driver = {
309 .name = "wm831x-ldo",
310 },
311};
312
313/*
314 * Analogue LDOs
315 */
316
5ff26a14 317static const struct regulator_linear_range wm831x_aldo_ranges[] = {
8828bae4
AL		 318 REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000),
319 REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000),
5ff26a14 320};
d1c6b4fe
MB		 321
322static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
323 int uV)
324{
325 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
0a479689
AL		 326 struct wm831x *wm831x = ldo->wm831x;
327 int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
328
5ff26a14 329 sel = regulator_map_voltage_linear_range(rdev, uV, uV);
0a479689
AL		 330 if (sel < 0)
331 return sel;
d1c6b4fe 332
0a479689 333 return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, sel);
d1c6b4fe
MB		 334}
335
d1c6b4fe
MB		 336static unsigned int wm831x_aldo_get_mode(struct regulator_dev *rdev)
337{
338 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
339 struct wm831x *wm831x = ldo->wm831x;
340 int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
6f17c652 341 int ret;
d1c6b4fe
MB		 342
343 ret = wm831x_reg_read(wm831x, on_reg);
344 if (ret < 0)
345 return 0;
346
347 if (ret & WM831X_LDO7_ON_MODE)
348 return REGULATOR_MODE_IDLE;
349 else
350 return REGULATOR_MODE_NORMAL;
351}
352
353static int wm831x_aldo_set_mode(struct regulator_dev *rdev,
354 unsigned int mode)
355{
356 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
357 struct wm831x *wm831x = ldo->wm831x;
d1c6b4fe
MB		 358 int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
359 int ret;
360
361
362 switch (mode) {
363 case REGULATOR_MODE_NORMAL:
e841a36a 364 ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, 0);
d1c6b4fe
MB		 365 if (ret < 0)
366 return ret;
367 break;
368
369 case REGULATOR_MODE_IDLE:
e841a36a 370 ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE,
d1c6b4fe
MB		 371 WM831X_LDO7_ON_MODE);
372 if (ret < 0)
373 return ret;
374 break;
375
376 default:
377 return -EINVAL;
378 }
379
380 return 0;
381}
382
383static int wm831x_aldo_get_status(struct regulator_dev *rdev)
384{
385 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
386 struct wm831x *wm831x = ldo->wm831x;
387 int mask = 1 << rdev_get_id(rdev);
388 int ret;
389
390 /* Is the regulator on? */
391 ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
392 if (ret < 0)
393 return ret;
394 if (!(ret & mask))
395 return REGULATOR_STATUS_OFF;
396
397 /* Is it reporting under voltage? */
398 ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
363506cd
AL		 399 if (ret < 0)
400 return ret;
d1c6b4fe
MB		 401 if (ret & mask)
402 return REGULATOR_STATUS_ERROR;
403
404 ret = wm831x_aldo_get_mode(rdev);
405 if (ret < 0)
406 return ret;
407 else
408 return regulator_mode_to_status(ret);
409}
410
411static struct regulator_ops wm831x_aldo_ops = {
5ff26a14
MB		 412 .list_voltage = regulator_list_voltage_linear_range,
413 .map_voltage = regulator_map_voltage_linear_range,
ac663b47 414 .get_voltage_sel = regulator_get_voltage_sel_regmap,
0a479689 415 .set_voltage_sel = regulator_set_voltage_sel_regmap,
d1c6b4fe
MB		 416 .set_suspend_voltage = wm831x_aldo_set_suspend_voltage,
417 .get_mode = wm831x_aldo_get_mode,
418 .set_mode = wm831x_aldo_set_mode,
419 .get_status = wm831x_aldo_get_status,
22c5fb6a
MB		 420 .set_bypass = regulator_set_bypass_regmap,
421 .get_bypass = regulator_get_bypass_regmap,
d1c6b4fe 422
ca8c361b
MB		 423 .is_enabled = regulator_is_enabled_regmap,
424 .enable = regulator_enable_regmap,
425 .disable = regulator_disable_regmap,
d1c6b4fe
MB		 426};
427
a5023574 428static int wm831x_aldo_probe(struct platform_device *pdev)
d1c6b4fe
MB		 429{
430 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
dff91d0b 431 struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
c172708d 432 struct regulator_config config = { };
137a6354 433 int id;
d1c6b4fe
MB		 434 struct wm831x_ldo *ldo;
435 struct resource *res;
436 int ret, irq;
437
137a6354
MB		 438 if (pdata && pdata->wm831x_num)
439 id = (pdata->wm831x_num * 10) + 1;
440 else
441 id = 0;
442 id = pdev->id - id;
443
d1c6b4fe
MB		 444 dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
445
fded2f4f 446 ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
fae3b836 447 if (!ldo)
d1c6b4fe 448 return -ENOMEM;
d1c6b4fe
MB		 449
450 ldo->wm831x = wm831x;
451
5656098e 452 res = platform_get_resource(pdev, IORESOURCE_REG, 0);
d1c6b4fe 453 if (res == NULL) {
5656098e 454 dev_err(&pdev->dev, "No REG resource\n");
d1c6b4fe
MB		 455 ret = -EINVAL;
456 goto err;
457 }
458 ldo->base = res->start;
459
460 snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
461 ldo->desc.name = ldo->name;
f1aba13f
MB		 462
463 snprintf(ldo->supply_name, sizeof(ldo->supply_name),
464 "LDO%dVDD", id + 1);
465 ldo->desc.supply_name = ldo->supply_name;
466
d1c6b4fe
MB		 467 ldo->desc.id = id;
468 ldo->desc.type = REGULATOR_VOLTAGE;
5ff26a14
MB		 469 ldo->desc.n_voltages = 32;
470 ldo->desc.linear_ranges = wm831x_aldo_ranges;
471 ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges);
d1c6b4fe
MB		 472 ldo->desc.ops = &wm831x_aldo_ops;
473 ldo->desc.owner = THIS_MODULE;
ac663b47
MB		 474 ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
475 ldo->desc.vsel_mask = WM831X_LDO7_ON_VSEL_MASK;
ca8c361b
MB		 476 ldo->desc.enable_reg = WM831X_LDO_ENABLE;
477 ldo->desc.enable_mask = 1 << id;
22c5fb6a
MB		 478 ldo->desc.bypass_reg = ldo->base;
479 ldo->desc.bypass_mask = WM831X_LDO7_SWI;
d1c6b4fe 480
c172708d 481 config.dev = pdev->dev.parent;
b7ca8788
MB		 482 if (pdata)
483 config.init_data = pdata->ldo[id];
c172708d 484 config.driver_data = ldo;
ac663b47 485 config.regmap = wm831x->regmap;
c172708d 486
fc7c60e3
MB		 487 ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
488 &config);
d1c6b4fe
MB		 489 if (IS_ERR(ldo->regulator)) {
490 ret = PTR_ERR(ldo->regulator);
491 dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
492 id + 1, ret);
493 goto err;
494 }
495
cd99758b 496 irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
41c7a879
MB		 497 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
498 wm831x_ldo_uv_irq,
499 IRQF_TRIGGER_RISING, ldo->name, ldo);
d1c6b4fe
MB		 500 if (ret != 0) {
501 dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
502 irq, ret);
fc7c60e3 503 goto err;
d1c6b4fe
MB		 504 }
505
506 platform_set_drvdata(pdev, ldo);
507
508 return 0;
509
d1c6b4fe 510err:
d1c6b4fe
MB		 511 return ret;
512}
513
d1c6b4fe
MB		 514static struct platform_driver wm831x_aldo_driver = {
515 .probe = wm831x_aldo_probe,
d1c6b4fe
MB		 516 .driver = {
517 .name = "wm831x-aldo",
518 },
519};
520
521/*
522 * Alive LDO
523 */
524
525#define WM831X_ALIVE_LDO_MAX_SELECTOR 0xf
526
d1c6b4fe
MB		 527static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev,
528 int uV)
529{
530 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
0a479689
AL		 531 struct wm831x *wm831x = ldo->wm831x;
532 int sel, reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL;
533
534 sel = regulator_map_voltage_linear(rdev, uV, uV);
535 if (sel < 0)
536 return sel;
d1c6b4fe 537
0a479689 538 return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, sel);
d1c6b4fe
MB		 539}
540
d1c6b4fe
MB		 541static int wm831x_alive_ldo_get_status(struct regulator_dev *rdev)
542{
543 struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
544 struct wm831x *wm831x = ldo->wm831x;
545 int mask = 1 << rdev_get_id(rdev);
546 int ret;
547
548 /* Is the regulator on? */
549 ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
550 if (ret < 0)
551 return ret;
552 if (ret & mask)
553 return REGULATOR_STATUS_ON;
554 else
555 return REGULATOR_STATUS_OFF;
556}
557
558static struct regulator_ops wm831x_alive_ldo_ops = {
d31e954e 559 .list_voltage = regulator_list_voltage_linear,
c2543b5f 560 .map_voltage = regulator_map_voltage_linear,
ac663b47 561 .get_voltage_sel = regulator_get_voltage_sel_regmap,
0a479689 562 .set_voltage_sel = regulator_set_voltage_sel_regmap,
d1c6b4fe
MB		 563 .set_suspend_voltage = wm831x_alive_ldo_set_suspend_voltage,
564 .get_status = wm831x_alive_ldo_get_status,
565
ca8c361b
MB		 566 .is_enabled = regulator_is_enabled_regmap,
567 .enable = regulator_enable_regmap,
568 .disable = regulator_disable_regmap,
d1c6b4fe
MB		 569};
570
a5023574 571static int wm831x_alive_ldo_probe(struct platform_device *pdev)
d1c6b4fe
MB		 572{
573 struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
dff91d0b 574 struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
c172708d 575 struct regulator_config config = { };
137a6354 576 int id;
d1c6b4fe
MB		 577 struct wm831x_ldo *ldo;
578 struct resource *res;
579 int ret;
580
137a6354
MB		 581 if (pdata && pdata->wm831x_num)
582 id = (pdata->wm831x_num * 10) + 1;
583 else
584 id = 0;
585 id = pdev->id - id;
586
587
d1c6b4fe
MB		 588 dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
589
fded2f4f 590 ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
fae3b836 591 if (!ldo)
d1c6b4fe 592 return -ENOMEM;
d1c6b4fe
MB		 593
594 ldo->wm831x = wm831x;
595
5656098e 596 res = platform_get_resource(pdev, IORESOURCE_REG, 0);
d1c6b4fe 597 if (res == NULL) {
5656098e 598 dev_err(&pdev->dev, "No REG resource\n");
d1c6b4fe
MB		 599 ret = -EINVAL;
600 goto err;
601 }
602 ldo->base = res->start;
603
604 snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
605 ldo->desc.name = ldo->name;
f1aba13f
MB		 606
607 snprintf(ldo->supply_name, sizeof(ldo->supply_name),
608 "LDO%dVDD", id + 1);
609 ldo->desc.supply_name = ldo->supply_name;
610
d1c6b4fe
MB		 611 ldo->desc.id = id;
612 ldo->desc.type = REGULATOR_VOLTAGE;
613 ldo->desc.n_voltages = WM831X_ALIVE_LDO_MAX_SELECTOR + 1;
614 ldo->desc.ops = &wm831x_alive_ldo_ops;
615 ldo->desc.owner = THIS_MODULE;
ac663b47
MB		 616 ldo->desc.vsel_reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL;
617 ldo->desc.vsel_mask = WM831X_LDO11_ON_VSEL_MASK;
ca8c361b
MB		 618 ldo->desc.enable_reg = WM831X_LDO_ENABLE;
619 ldo->desc.enable_mask = 1 << id;
d31e954e
MB		 620 ldo->desc.min_uV = 800000;
621 ldo->desc.uV_step = 50000;
eefaa3c6 622 ldo->desc.enable_time = 1000;
d1c6b4fe 623
c172708d 624 config.dev = pdev->dev.parent;
b7ca8788
MB		 625 if (pdata)
626 config.init_data = pdata->ldo[id];
c172708d 627 config.driver_data = ldo;
ac663b47 628 config.regmap = wm831x->regmap;
c172708d 629
fc7c60e3
MB		 630 ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
631 &config);
d1c6b4fe
MB		 632 if (IS_ERR(ldo->regulator)) {
633 ret = PTR_ERR(ldo->regulator);
634 dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
635 id + 1, ret);
636 goto err;
637 }
638
639 platform_set_drvdata(pdev, ldo);
640
641 return 0;
642
643err:
d1c6b4fe
MB		 644 return ret;
645}
646
d1c6b4fe
MB		 647static struct platform_driver wm831x_alive_ldo_driver = {
648 .probe = wm831x_alive_ldo_probe,
d1c6b4fe
MB		 649 .driver = {
650 .name = "wm831x-alive-ldo",
651 },
652};
653
654static int __init wm831x_ldo_init(void)
655{
656 int ret;
657
658 ret = platform_driver_register(&wm831x_gp_ldo_driver);
659 if (ret != 0)
660 pr_err("Failed to register WM831x GP LDO driver: %d\n", ret);
661
662 ret = platform_driver_register(&wm831x_aldo_driver);
663 if (ret != 0)
664 pr_err("Failed to register WM831x ALDO driver: %d\n", ret);
665
666 ret = platform_driver_register(&wm831x_alive_ldo_driver);
667 if (ret != 0)
668 pr_err("Failed to register WM831x alive LDO driver: %d\n",
669 ret);
670
671 return 0;
672}
673subsys_initcall(wm831x_ldo_init);
674
675static void __exit wm831x_ldo_exit(void)
676{
677 platform_driver_unregister(&wm831x_alive_ldo_driver);
678 platform_driver_unregister(&wm831x_aldo_driver);
679 platform_driver_unregister(&wm831x_gp_ldo_driver);
680}
681module_exit(wm831x_ldo_exit);
682
683/* Module information */
684MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
685MODULE_DESCRIPTION("WM831x LDO driver");
686MODULE_LICENSE("GPL");
687MODULE_ALIAS("platform:wm831x-ldo");
688MODULE_ALIAS("platform:wm831x-aldo");
689MODULE_ALIAS("platform:wm831x-aliveldo");
Linux kernel - Deliverables
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