Merge tag 'devicetree-fixes-for-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6-block.git] / drivers / regulator / twl-regulator.c
... / ...
CommitLineData
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
4 *
5 * Copyright (C) 2008 David Brownell
6 */
7
8#include <linux/module.h>
9#include <linux/string.h>
10#include <linux/slab.h>
11#include <linux/init.h>
12#include <linux/err.h>
13#include <linux/platform_device.h>
14#include <linux/of.h>
15#include <linux/of_device.h>
16#include <linux/regulator/driver.h>
17#include <linux/regulator/machine.h>
18#include <linux/regulator/of_regulator.h>
19#include <linux/mfd/twl.h>
20#include <linux/delay.h>
21
22/*
23 * The TWL4030/TW5030/TPS659x0 family chips include power management, a
24 * USB OTG transceiver, an RTC, ADC, PWM, and lots more. Some versions
25 * include an audio codec, battery charger, and more voltage regulators.
26 * These chips are often used in OMAP-based systems.
27 *
28 * This driver implements software-based resource control for various
29 * voltage regulators. This is usually augmented with state machine
30 * based control.
31 */
32
33struct twlreg_info {
34 /* start of regulator's PM_RECEIVER control register bank */
35 u8 base;
36
37 /* twl resource ID, for resource control state machine */
38 u8 id;
39
40 /* voltage in mV = table[VSEL]; table_len must be a power-of-two */
41 u8 table_len;
42 const u16 *table;
43
44 /* State REMAP default configuration */
45 u8 remap;
46
47 /* used by regulator core */
48 struct regulator_desc desc;
49
50 /* chip specific features */
51 unsigned long features;
52
53 /* data passed from board for external get/set voltage */
54 void *data;
55};
56
57
58/* LDO control registers ... offset is from the base of its register bank.
59 * The first three registers of all power resource banks help hardware to
60 * manage the various resource groups.
61 */
62/* Common offset in TWL4030/6030 */
63#define VREG_GRP 0
64/* TWL4030 register offsets */
65#define VREG_TYPE 1
66#define VREG_REMAP 2
67#define VREG_DEDICATED 3 /* LDO control */
68#define VREG_VOLTAGE_SMPS_4030 9
69/* TWL6030 register offsets */
70#define VREG_TRANS 1
71#define VREG_STATE 2
72#define VREG_VOLTAGE 3
73#define VREG_VOLTAGE_SMPS 4
74
75static inline int
76twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
77{
78 u8 value;
79 int status;
80
81 status = twl_i2c_read_u8(slave_subgp,
82 &value, info->base + offset);
83 return (status < 0) ? status : value;
84}
85
86static inline int
87twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
88 u8 value)
89{
90 return twl_i2c_write_u8(slave_subgp,
91 value, info->base + offset);
92}
93
94/*----------------------------------------------------------------------*/
95
96/* generic power resource operations, which work on all regulators */
97
98static int twlreg_grp(struct regulator_dev *rdev)
99{
100 return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
101 VREG_GRP);
102}
103
104/*
105 * Enable/disable regulators by joining/leaving the P1 (processor) group.
106 * We assume nobody else is updating the DEV_GRP registers.
107 */
108/* definition for 4030 family */
109#define P3_GRP_4030 BIT(7) /* "peripherals" */
110#define P2_GRP_4030 BIT(6) /* secondary processor, modem, etc */
111#define P1_GRP_4030 BIT(5) /* CPU/Linux */
112/* definition for 6030 family */
113#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
114#define P2_GRP_6030 BIT(1) /* "peripherals" */
115#define P1_GRP_6030 BIT(0) /* CPU/Linux */
116
117static int twl4030reg_is_enabled(struct regulator_dev *rdev)
118{
119 int state = twlreg_grp(rdev);
120
121 if (state < 0)
122 return state;
123
124 return state & P1_GRP_4030;
125}
126
127#define PB_I2C_BUSY BIT(0)
128#define PB_I2C_BWEN BIT(1)
129
130/* Wait until buffer empty/ready to send a word on power bus. */
131static int twl4030_wait_pb_ready(void)
132{
133
134 int ret;
135 int timeout = 10;
136 u8 val;
137
138 do {
139 ret = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
140 TWL4030_PM_MASTER_PB_CFG);
141 if (ret < 0)
142 return ret;
143
144 if (!(val & PB_I2C_BUSY))
145 return 0;
146
147 mdelay(1);
148 timeout--;
149 } while (timeout);
150
151 return -ETIMEDOUT;
152}
153
154/* Send a word over the powerbus */
155static int twl4030_send_pb_msg(unsigned msg)
156{
157 u8 val;
158 int ret;
159
160 /* save powerbus configuration */
161 ret = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
162 TWL4030_PM_MASTER_PB_CFG);
163 if (ret < 0)
164 return ret;
165
166 /* Enable i2c access to powerbus */
167 ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val | PB_I2C_BWEN,
168 TWL4030_PM_MASTER_PB_CFG);
169 if (ret < 0)
170 return ret;
171
172 ret = twl4030_wait_pb_ready();
173 if (ret < 0)
174 return ret;
175
176 ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, msg >> 8,
177 TWL4030_PM_MASTER_PB_WORD_MSB);
178 if (ret < 0)
179 return ret;
180
181 ret = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, msg & 0xff,
182 TWL4030_PM_MASTER_PB_WORD_LSB);
183 if (ret < 0)
184 return ret;
185
186 ret = twl4030_wait_pb_ready();
187 if (ret < 0)
188 return ret;
189
190 /* Restore powerbus configuration */
191 return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val,
192 TWL4030_PM_MASTER_PB_CFG);
193}
194
195static int twl4030reg_enable(struct regulator_dev *rdev)
196{
197 struct twlreg_info *info = rdev_get_drvdata(rdev);
198 int grp;
199 int ret;
200
201 grp = twlreg_grp(rdev);
202 if (grp < 0)
203 return grp;
204
205 grp |= P1_GRP_4030;
206
207 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
208
209 return ret;
210}
211
212static int twl4030reg_disable(struct regulator_dev *rdev)
213{
214 struct twlreg_info *info = rdev_get_drvdata(rdev);
215 int grp;
216 int ret;
217
218 grp = twlreg_grp(rdev);
219 if (grp < 0)
220 return grp;
221
222 grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
223
224 ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
225
226 return ret;
227}
228
229static int twl4030reg_get_status(struct regulator_dev *rdev)
230{
231 int state = twlreg_grp(rdev);
232
233 if (state < 0)
234 return state;
235 state &= 0x0f;
236
237 /* assume state != WARM_RESET; we'd not be running... */
238 if (!state)
239 return REGULATOR_STATUS_OFF;
240 return (state & BIT(3))
241 ? REGULATOR_STATUS_NORMAL
242 : REGULATOR_STATUS_STANDBY;
243}
244
245static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
246{
247 struct twlreg_info *info = rdev_get_drvdata(rdev);
248 unsigned message;
249
250 /* We can only set the mode through state machine commands... */
251 switch (mode) {
252 case REGULATOR_MODE_NORMAL:
253 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
254 break;
255 case REGULATOR_MODE_STANDBY:
256 message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
257 break;
258 default:
259 return -EINVAL;
260 }
261
262 return twl4030_send_pb_msg(message);
263}
264
265static inline unsigned int twl4030reg_map_mode(unsigned int mode)
266{
267 switch (mode) {
268 case RES_STATE_ACTIVE:
269 return REGULATOR_MODE_NORMAL;
270 case RES_STATE_SLEEP:
271 return REGULATOR_MODE_STANDBY;
272 default:
273 return REGULATOR_MODE_INVALID;
274 }
275}
276
277/*----------------------------------------------------------------------*/
278
279/*
280 * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
281 * select field in its control register. We use tables indexed by VSEL
282 * to record voltages in milliVolts. (Accuracy is about three percent.)
283 *
284 * Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
285 * currently handled by listing two slightly different VAUX2 regulators,
286 * only one of which will be configured.
287 *
288 * VSEL values documented as "TI cannot support these values" are flagged
289 * in these tables as UNSUP() values; we normally won't assign them.
290 *
291 * VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
292 * TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
293 */
294#define UNSUP_MASK 0x8000
295
296#define UNSUP(x) (UNSUP_MASK | (x))
297#define IS_UNSUP(info, x) \
298 ((UNSUP_MASK & (x)) && \
299 !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
300#define LDO_MV(x) (~UNSUP_MASK & (x))
301
302
303static const u16 VAUX1_VSEL_table[] = {
304 UNSUP(1500), UNSUP(1800), 2500, 2800,
305 3000, 3000, 3000, 3000,
306};
307static const u16 VAUX2_4030_VSEL_table[] = {
308 UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
309 1500, 1800, UNSUP(1850), 2500,
310 UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
311 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
312};
313static const u16 VAUX2_VSEL_table[] = {
314 1700, 1700, 1900, 1300,
315 1500, 1800, 2000, 2500,
316 2100, 2800, 2200, 2300,
317 2400, 2400, 2400, 2400,
318};
319static const u16 VAUX3_VSEL_table[] = {
320 1500, 1800, 2500, 2800,
321 3000, 3000, 3000, 3000,
322};
323static const u16 VAUX4_VSEL_table[] = {
324 700, 1000, 1200, UNSUP(1300),
325 1500, 1800, UNSUP(1850), 2500,
326 UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
327 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
328};
329static const u16 VMMC1_VSEL_table[] = {
330 1850, 2850, 3000, 3150,
331};
332static const u16 VMMC2_VSEL_table[] = {
333 UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
334 UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
335 2600, 2800, 2850, 3000,
336 3150, 3150, 3150, 3150,
337};
338static const u16 VPLL1_VSEL_table[] = {
339 1000, 1200, 1300, 1800,
340 UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
341};
342static const u16 VPLL2_VSEL_table[] = {
343 700, 1000, 1200, 1300,
344 UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
345 UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
346 UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
347};
348static const u16 VSIM_VSEL_table[] = {
349 UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
350 2800, 3000, 3000, 3000,
351};
352static const u16 VDAC_VSEL_table[] = {
353 1200, 1300, 1800, 1800,
354};
355static const u16 VIO_VSEL_table[] = {
356 1800, 1850,
357};
358static const u16 VINTANA2_VSEL_table[] = {
359 2500, 2750,
360};
361
362static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
363{
364 struct twlreg_info *info = rdev_get_drvdata(rdev);
365 int mV = info->table[index];
366
367 return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
368}
369
370static int
371twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
372{
373 struct twlreg_info *info = rdev_get_drvdata(rdev);
374
375 return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
376 selector);
377}
378
379static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev)
380{
381 struct twlreg_info *info = rdev_get_drvdata(rdev);
382 int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
383
384 if (vsel < 0)
385 return vsel;
386
387 vsel &= info->table_len - 1;
388 return vsel;
389}
390
391static const struct regulator_ops twl4030ldo_ops = {
392 .list_voltage = twl4030ldo_list_voltage,
393
394 .set_voltage_sel = twl4030ldo_set_voltage_sel,
395 .get_voltage_sel = twl4030ldo_get_voltage_sel,
396
397 .enable = twl4030reg_enable,
398 .disable = twl4030reg_disable,
399 .is_enabled = twl4030reg_is_enabled,
400
401 .set_mode = twl4030reg_set_mode,
402
403 .get_status = twl4030reg_get_status,
404};
405
406static int
407twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
408 unsigned *selector)
409{
410 struct twlreg_info *info = rdev_get_drvdata(rdev);
411 int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
412
413 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS_4030, vsel);
414
415 return 0;
416}
417
418static int twl4030smps_get_voltage(struct regulator_dev *rdev)
419{
420 struct twlreg_info *info = rdev_get_drvdata(rdev);
421 int vsel;
422
423 vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
424 VREG_VOLTAGE_SMPS_4030);
425
426 return vsel * 12500 + 600000;
427}
428
429static const struct regulator_ops twl4030smps_ops = {
430 .set_voltage = twl4030smps_set_voltage,
431 .get_voltage = twl4030smps_get_voltage,
432};
433
434/*----------------------------------------------------------------------*/
435
436static const struct regulator_ops twl4030fixed_ops = {
437 .list_voltage = regulator_list_voltage_linear,
438
439 .enable = twl4030reg_enable,
440 .disable = twl4030reg_disable,
441 .is_enabled = twl4030reg_is_enabled,
442
443 .set_mode = twl4030reg_set_mode,
444
445 .get_status = twl4030reg_get_status,
446};
447
448/*----------------------------------------------------------------------*/
449
450#define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
451static const struct twlreg_info TWL4030_INFO_##label = { \
452 .base = offset, \
453 .id = num, \
454 .table_len = ARRAY_SIZE(label##_VSEL_table), \
455 .table = label##_VSEL_table, \
456 .remap = remap_conf, \
457 .desc = { \
458 .name = #label, \
459 .id = TWL4030_REG_##label, \
460 .n_voltages = ARRAY_SIZE(label##_VSEL_table), \
461 .ops = &twl4030ldo_ops, \
462 .type = REGULATOR_VOLTAGE, \
463 .owner = THIS_MODULE, \
464 .enable_time = turnon_delay, \
465 .of_map_mode = twl4030reg_map_mode, \
466 }, \
467 }
468
469#define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
470static const struct twlreg_info TWL4030_INFO_##label = { \
471 .base = offset, \
472 .id = num, \
473 .remap = remap_conf, \
474 .desc = { \
475 .name = #label, \
476 .id = TWL4030_REG_##label, \
477 .ops = &twl4030smps_ops, \
478 .type = REGULATOR_VOLTAGE, \
479 .owner = THIS_MODULE, \
480 .enable_time = turnon_delay, \
481 .of_map_mode = twl4030reg_map_mode, \
482 }, \
483 }
484
485#define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
486 remap_conf) \
487static const struct twlreg_info TWLFIXED_INFO_##label = { \
488 .base = offset, \
489 .id = num, \
490 .remap = remap_conf, \
491 .desc = { \
492 .name = #label, \
493 .id = TWL4030##_REG_##label, \
494 .n_voltages = 1, \
495 .ops = &twl4030fixed_ops, \
496 .type = REGULATOR_VOLTAGE, \
497 .owner = THIS_MODULE, \
498 .min_uV = mVolts * 1000, \
499 .enable_time = turnon_delay, \
500 .of_map_mode = twl4030reg_map_mode, \
501 }, \
502 }
503
504/*
505 * We list regulators here if systems need some level of
506 * software control over them after boot.
507 */
508TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
509TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
510TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
511TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
512TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
513TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
514TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
515TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
516TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
517TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
518TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
519TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
520TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
521TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
522TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
523/* VUSBCP is managed *only* by the USB subchip */
524TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
525TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
526TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
527TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
528TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
529
530#define TWL_OF_MATCH(comp, family, label) \
531 { \
532 .compatible = comp, \
533 .data = &family##_INFO_##label, \
534 }
535
536#define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
537#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
538#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
539#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
540#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
541
542static const struct of_device_id twl_of_match[] = {
543 TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
544 TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
545 TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
546 TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
547 TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
548 TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
549 TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
550 TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
551 TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
552 TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
553 TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
554 TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
555 TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
556 TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
557 TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
558 TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
559 TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
560 TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
561 TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
562 TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
563 {},
564};
565MODULE_DEVICE_TABLE(of, twl_of_match);
566
567static int twlreg_probe(struct platform_device *pdev)
568{
569 int id;
570 struct twlreg_info *info;
571 const struct twlreg_info *template;
572 struct regulator_init_data *initdata;
573 struct regulation_constraints *c;
574 struct regulator_dev *rdev;
575 struct regulator_config config = { };
576
577 template = of_device_get_match_data(&pdev->dev);
578 if (!template)
579 return -ENODEV;
580
581 id = template->desc.id;
582 initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
583 &template->desc);
584 if (!initdata)
585 return -EINVAL;
586
587 info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
588 if (!info)
589 return -ENOMEM;
590
591 /* Constrain board-specific capabilities according to what
592 * this driver and the chip itself can actually do.
593 */
594 c = &initdata->constraints;
595 c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
596 c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
597 | REGULATOR_CHANGE_MODE
598 | REGULATOR_CHANGE_STATUS;
599 switch (id) {
600 case TWL4030_REG_VIO:
601 case TWL4030_REG_VDD1:
602 case TWL4030_REG_VDD2:
603 case TWL4030_REG_VPLL1:
604 case TWL4030_REG_VINTANA1:
605 case TWL4030_REG_VINTANA2:
606 case TWL4030_REG_VINTDIG:
607 c->always_on = true;
608 break;
609 default:
610 break;
611 }
612
613 config.dev = &pdev->dev;
614 config.init_data = initdata;
615 config.driver_data = info;
616 config.of_node = pdev->dev.of_node;
617
618 rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
619 if (IS_ERR(rdev)) {
620 dev_err(&pdev->dev, "can't register %s, %ld\n",
621 info->desc.name, PTR_ERR(rdev));
622 return PTR_ERR(rdev);
623 }
624 platform_set_drvdata(pdev, rdev);
625
626 twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP, info->remap);
627
628 /* NOTE: many regulators support short-circuit IRQs (presentable
629 * as REGULATOR_OVER_CURRENT notifications?) configured via:
630 * - SC_CONFIG
631 * - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
632 * - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
633 * - IT_CONFIG
634 */
635
636 return 0;
637}
638
639MODULE_ALIAS("platform:twl4030_reg");
640
641static struct platform_driver twlreg_driver = {
642 .probe = twlreg_probe,
643 /* NOTE: short name, to work around driver model truncation of
644 * "twl_regulator.12" (and friends) to "twl_regulator.1".
645 */
646 .driver = {
647 .name = "twl4030_reg",
648 .of_match_table = of_match_ptr(twl_of_match),
649 },
650};
651
652static int __init twlreg_init(void)
653{
654 return platform_driver_register(&twlreg_driver);
655}
656subsys_initcall(twlreg_init);
657
658static void __exit twlreg_exit(void)
659{
660 platform_driver_unregister(&twlreg_driver);
661}
662module_exit(twlreg_exit)
663
664MODULE_DESCRIPTION("TWL4030 regulator driver");
665MODULE_LICENSE("GPL");